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Note: This page contains sample records for the topic "tox parameter tox" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

The Tox21 robotic platform for the assessment of environmental chemicals – from vision to reality  

Science Journals Connector (OSTI)

Since its establishment in 2008, the US Tox21 inter-agency collaboration has made great progress in developing and evaluating cellular models for the evaluation of environmental chemicals as a proof of principle. Currently, the program has entered its production phase (Tox21 Phase II) focusing initially on the areas of modulation of nuclear receptors and stress response pathways. During Tox21 Phase II, the set of chemicals to be tested has been expanded to nearly 10,000 (10K) compounds and a fully automated screening platform has been implemented. The Tox21 robotic system combined with informatics efforts is capable of screening and profiling the collection of 10K environmental chemicals in triplicate in a week. In this article, we describe the Tox21 screening process, compound library preparation, data processing, and robotic system validation.

Matias S. Attene-Ramos; Nicole Miller; Ruili Huang; Sam Michael; Misha Itkin; Robert J. Kavlock; Christopher P. Austin; Paul Shinn; Anton Simeonov; Raymond R. Tice; Menghang Xia

2013-01-01T23:59:59.000Z

2

Identifying developmental toxicity pathways for a subset of ToxCast chemicals using human embryonic stem cells and metabolomics  

SciTech Connect (OSTI)

Metabolomics analysis was performed on the supernatant of human embryonic stem (hES) cell cultures exposed to a blinded subset of 11 chemicals selected from the chemical library of EPA's ToxCast Trade-Mark-Sign chemical screening and prioritization research project. Metabolites from hES cultures were evaluated for known and novel signatures that may be indicative of developmental toxicity. Significant fold changes in endogenous metabolites were detected for 83 putatively annotated mass features in response to the subset of ToxCast chemicals. The annotations were mapped to specific human metabolic pathways. This revealed strong effects on pathways for nicotinate and nicotinamide metabolism, pantothenate and CoA biosynthesis, glutathione metabolism, and arginine and proline metabolism pathways. Predictivity for adverse outcomes in mammalian prenatal developmental toxicity studies used ToxRefDB and other sources of information, including Stemina Biomarker Discovery's predictive DevTox Registered-Sign model trained on 23 pharmaceutical agents of known developmental toxicity and differing potency. The model initially predicted developmental toxicity from the blinded ToxCast compounds in concordance with animal data with 73% accuracy. Retraining the model with data from the unblinded test compounds at one concentration level increased the predictive accuracy for the remaining concentrations to 83%. These preliminary results on a 11-chemical subset of the ToxCast chemical library indicate that metabolomics analysis of the hES secretome provides information valuable for predictive modeling and mechanistic understanding of mammalian developmental toxicity. -- Highlights: Black-Right-Pointing-Pointer We tested 11 environmental compounds in a hESC metabolomics platform. Black-Right-Pointing-Pointer Significant changes in secreted small molecule metabolites were observed. Black-Right-Pointing-Pointer Perturbed mass features map to pathways critical for normal development and pregnancy. Black-Right-Pointing-Pointer Arginine, proline, nicotinate, nicotinamide and glutathione pathways were affected.

Kleinstreuer, N.C., E-mail: kleinstreuer.nicole@epa.gov [NCCT, US EPA, RTP, NC 27711 (United States); Smith, A.M.; West, P.R.; Conard, K.R.; Fontaine, B.R. [Stemina Biomarker Discovery, Inc., Madison, WI 53719 (United States)] [Stemina Biomarker Discovery, Inc., Madison, WI 53719 (United States); Weir-Hauptman, A.M. [Covance, Inc., Madison, WI 53704 (United States)] [Covance, Inc., Madison, WI 53704 (United States); Palmer, J.A. [Stemina Biomarker Discovery, Inc., Madison, WI 53719 (United States)] [Stemina Biomarker Discovery, Inc., Madison, WI 53719 (United States); Knudsen, T.B.; Dix, D.J. [NCCT, US EPA, RTP, NC 27711 (United States)] [NCCT, US EPA, RTP, NC 27711 (United States); Donley, E.L.R. [Stemina Biomarker Discovery, Inc., Madison, WI 53719 (United States)] [Stemina Biomarker Discovery, Inc., Madison, WI 53719 (United States); Cezar, G.G. [Stemina Biomarker Discovery, Inc., Madison, WI 53719 (United States) [Stemina Biomarker Discovery, Inc., Madison, WI 53719 (United States); University of Wisconsin-Madison, Madison, WI 53706 (United States)

2011-11-15T23:59:59.000Z

3

Terra -Ciencias http://web.mit.edu/tox/sasisekharan/uruguay-cancer.html 1 of 2 7/28/2005 9:51 PM  

E-Print Network [OSTI]

Terra - Ciencias http://web.mit.edu/tox/sasisekharan/uruguay-cancer.html 1 of 2 7/28/2005 9:51 PM ! ' !#* ! ,$3% +# ! , % ! $!$# ! !$- ! 4 " 7- +# #++ 4 #%"$ #1 22 3 ' ' /// #12;Terra - Ciencias http

Sasisekharan, Ram

4

Heterogeneity of diphtheria toxin gene, tox, and its regulatory element, dtxR, in Corynebacterium diphtheriae strains causing epidemic diphtheria in Russia and Ukraine.  

Science Journals Connector (OSTI)

...causing epidemic diphtheria in Russia and Ukraine H Nakao JM Pruckler IK Mazurova OV Narvskaia...diphtheriae strains isolated in Russia and Ukraine before and during the current diphtheria...epidemic strains from both Russia and Ukraine had tox types 3 and 4, and only in a...

H Nakao; J M Pruckler; I K Mazurova; O V Narvskaia; T Glushkevich; V F Marijevski; A N Kravetz; B S Fields; I K Wachsmuth; T Popovic

1996-07-01T23:59:59.000Z

5

LiverTox: Advanced QSAR and Toxicogeomic Software for Hepatotoxicity Prediction  

SciTech Connect (OSTI)

YAHSGS LLC and Oak Ridge National Laboratory (ORNL) established a CRADA in an attempt to develop a predictive system using a pre-existing ORNL computational neural network and wavelets format. This was in the interest of addressing national needs for toxicity prediction system to help overcome the significant drain of resources (money and time) being directed toward developing chemical agents for commerce. The research project has been supported through an STTR mechanism and funded by the National Institute of Environmental Health Sciences beginning Phase I in 2004 (CRADA No. ORNL-04-0688) and extending Phase II through 2007 (ORNL NFE-06-00020). To attempt the research objectives and aims outlined under this CRADA, state-of-the-art computational neural network and wavelet methods were used in an effort to design a predictive toxicity system that used two independent areas on which to base the system’s predictions. These two areas were quantitative structure-activity relationships and gene-expression data obtained from microarrays. A third area, using the new Massively Parallel Signature Sequencing (MPSS) technology to assess gene expression, also was attempted but had to be dropped because the company holding the rights to this promising MPSS technology went out of business. A research-scale predictive toxicity database system called Multi-Intelligent System for Toxicogenomic Applications (MISTA) was developed and its feasibility for use as a predictor of toxicological activity was tested. The fundamental focus of the CRADA was an attempt and effort to operate the MISTA database using the ORNL neural network. This effort indicated the potential that such a fully developed system might be used to assist in predicting such biological endpoints as hepatotoxcity and neurotoxicity. The MISTA/LiverTox approach if eventually fully developed might also be useful for automatic processing of microarray data to predict modes of action. A technical paper describing the methods and technology used in the CRADA has been published. This paper was entitled “A Toxicity Evaluation and Predictive System Based on Neural Networks and Wavelets” and appeared in an American Chemical Society peer-reviewed publication this year (J. Chem. Inf. Model. 47: 676685, 2007). A patent application was filed but later abandoned.

Lu, P-Y.; Yuracko, K. (YAHSGS, LLC)

2011-02-25T23:59:59.000Z

6

INVESTIGATION OF THE TOTAL ORGANIC HALOGEN ANALYTICAL METHOD AT THE WASTE SAMPLING AND CHARACTERIZATION FACILITY  

SciTech Connect (OSTI)

Total organic halogen (TOX) is used as a parameter to screen groundwater samples at the Hanford Site. Trending is done for each groundwater well, and changes in TOX and other screening parameters can lead to costly changes in the monitoring protocol. The Waste Sampling and Characterization Facility (WSCF) analyzes groundwater samples for TOX using the United States Environmental Protection Agency (EPA) SW-S46 method 9020B (EPA 1996a). Samples from the Soil and Groundwater Remediation Project (SGRP) are submitted to the WSCF for analysis without information regarding the source of the sample; each sample is in essence a ''blind'' sample to the laboratory. Feedback from the SGRP indicated that some of the WSCF-generated TOX data from groundwater wells had a number of outlier values based on the historical trends (Anastos 200Sa). Additionally, analysts at WSCF observed inconsistent TOX results among field sample replicates. Therefore, the WSCF lab performed an investigation of the TOX analysis to determine the cause of the outlier data points. Two causes were found that contributed to generating out-of-trend TOX data: (1) The presence of inorganic chloride in the groundwater samples: at inorganic chloride concentrations greater than about 10 parts per million (ppm), apparent TOX values increase with increasing chloride concentration. A parallel observation is the increase in apparent breakthrough of TOX from the first to the second activated-carbon adsorption tubes with increasing inorganic chloride concentration. (2) During the sample preparation step, excessive purging of the adsorption tubes with oxygen pressurization gas after sample loading may cause channeling in the activated carbon bed. This channeling leads to poor removal of inorganic chloride during the subsequent wash step with aqueous potassium nitrate. The presence of this residual inorganic chloride then produces erroneously high TOX values. Changes in sample preparation were studied to more effectively remove inorganic chloride from the activated-carbon adsorption tubes. With the TOX sample preparation equipment and TOX analyzers at WSCF, the nitrate wash recommended by EPA SW-846 method 9020B was found to be inadequate to remove inorganic chloride interference. Increasing the nitrate wash concentration from 10 grams per liter (g/L) to 100 giL potassium nitrate and increasing the nitrate wash volume from 3 milliliters (mL) to 10 mL effectively removed the inorganic chloride up to at least 100 ppm chloride in the sample matrix. Excessive purging of the adsorption tubes during sample preparation was eliminated. These changes in sample preparation have been incorporated in the analytical procedure. The results using the revised sample preparation procedure show better agreement of TOX values both for replicate analyses of single samples and for the analysis of replicate samples acquired from the same groundwater well. Furthermore, less apparent adsorption tube breakthrough now occurs with the revised procedure. One additional modification made to sample preparation was to discontinue the treatment of groundwater samples with sodium bisulfite. Sodium bisulfite is used to remove inorganic chlorine from the sample; inorganic chlorine is not expected to be a constituent in these groundwater samples. Several other factors were also investigated as possible sources of anomalous TOX results: (1) Instrument instability: examination of the history of results for TOX laboratory control samples and initial calibration verification standards indicate good long-term precision for the method and instrument. Determination of a method detection limit of 2.3 ppb in a deionized water matrix indicates the method and instrumentation have good stability and repeatability. (2) Non-linear instrument response: the instrument is shown to have good linear response from zero to 200 parts per billion (ppb) TOX. This concentration range encompasses the majority of samples received at WSCF for TOX analysis. Linear response was checked using both non-volatile TOX species (trichlorophenol) an

JG DOUGLAS; HK MEZNARICH, PHD; JR OLSEN; GA ROSS PHD; M STAUFFER

2009-02-13T23:59:59.000Z

7

INVESTIGATION OF THE TOTAL ORGANIC HALOGEN ANALYTICAL METHOD AT THE WASTE SAMPLING CHARACTERIZATION FACILITY (WSCF)  

SciTech Connect (OSTI)

Total organic halogen (TOX) is used as a parameter to screen groundwater samples at the Hanford Site. Trending is done for each groundwater well, and changes in TOX and other screening parameters can lead to costly changes in the monitoring protocol. The Waste Sampling and Characterization Facility (WSCF) analyzes groundwater samples for TOX using the United States Environmental Protection Agency (EPA) SW-846 method 9020B (EPA 1996a). Samples from the Soil and Groundwater Remediation Project (S&GRP) are submitted to the WSCF for analysis without information regarding the source of the sample; each sample is in essence a 'blind' sample to the laboratory. Feedback from the S&GRP indicated that some of the WSCF-generated TOX data from groundwater wells had a number of outlier values based on the historical trends (Anastos 2008a). Additionally, analysts at WSCF observed inconsistent TOX results among field sample replicates. Therefore, the WSCF lab performed an investigation of the TOX analysis to determine the cause of the outlier data points. Two causes were found that contributed to generating out-of-trend TOX data: (1) The presence of inorganic chloride in the groundwater samples: at inorganic chloride concentrations greater than about 10 parts per million (ppm), apparent TOX values increase with increasing chloride concentration. A parallel observation is the increase in apparent breakthrough of TOX from the first to the second activated-carbon adsorption tubes with increasing inorganic chloride concentration. (2) During the sample preparation step, excessive purging of the adsorption tubes with oxygen pressurization gas after sample loading may cause channeling in the activated-carbon bed. This channeling leads to poor removal of inorganic chloride during the subsequent wash step with aqueous potassium nitrate. The presence of this residual inorganic chloride then produces erroneously high TOX values. Changes in sample preparation were studied to more effectively remove inorganic chloride from the activated carbon adsorption tubes. With the TOX sample preparation equipment and TOX analyzers at WSCF, the nitrate wash recommended by EPA SW-846 method 9020B was found to be inadequate to remove inorganic chloride interference. Increasing the nitrate wash concentration from 10 grams per liter (g/L) to 100 g/L potassium nitrate and increasing the nitrate wash volume from 3 milliliters (mL) to 10 mL effectively removed the inorganic chloride up to at least 100 ppm chloride in the sample matrix. Excessive purging of the adsorption tubes during sample preparation was eliminated. These changes in sample preparation have been incorporated in the analytical procedure. The results using the revised sample preparation procedure show better agreement of TOX values both for replicate analyses of single samples and for the analysis of replicate samples acquired from the same groundwater well. Furthermore, less apparent column breakthrough now occurs with the revised procedure. One additional modification made to sample preparation was to discontinue the treatment of groundwater samples with sodium bisulfite. Sodium bisulfite is used to remove inorganic chlorine from the sample; inorganic chlorine is not expected to be a constituent in these groundwater samples. Several other factors were also investigated as possible sources of anomalous TOX results: (1) Instrument instability: examination of the history of results for TOX laboratory control samples and initial calibration verification standards indicate good long-term precision for the method and instrument. Determination of a method detection limit of 2.3 ppb in a deionized water matrix indicates the method and instrumentation have good stability and repeatability. (2) Non-linear instrument response: the instrument is shown to have good linear response from zero to 200 parts per billion (ppb) TOX. This concentration range encompasses the majority of samples received at WSCF for TOX analysis. (3) Improper sample preservation: ion-chromatographic analysis of several samples wit

DOUGLAS JG; MEZNARICH HD, PHD; OLSEN JR; ROSS GA; STAUFFER M

2008-09-30T23:59:59.000Z

8

SUNDA, WILLIAM G., AND JO ANN M. LEWIS. Effect of ...  

Science Journals Connector (OSTI)

Oct 3, 1977 ... Effect of complexation by natural organic ligands on the toxicity of copper to ..... 1976. The relation- ship between cupric ion activity and the tox-.

2000-01-08T23:59:59.000Z

9

Characteristics of the NiO/hexaaluminate for chemical looping combustion  

Science Journals Connector (OSTI)

Chemical looping combustion technology has drawn much attention due to...x formation and simple CO2...separation. The thermally stable oxygen carrier in the redox cycle at 1,000–1,400 K is necessary for the chemical

Kwang Sup Song; Yong Seog Seo; Hyung Kee Yoon…

2003-05-01T23:59:59.000Z

10

Trend analysis from 1970 to 2008 and model evaluation of EDGARv4 global gridded anthropogenic mercury emissions  

E-Print Network [OSTI]

The Emission Database for Global Atmospheric Research (EDGAR) provides a time-series of man-made emissions of greenhouse gases and short-lived atmospheric pollutants from 1970 to 2008. Mercury is included in EDGARv4.tox1, ...

Muntean, Marilena

11

E-Print Network 3.0 - adult wistar rats Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

(C3H RIII)F1... 344Tox fdr FDRL fds Food and Drug Research Laboratories stock rats fis Fischer fmf Fischer 344Mai f... :(LE) lee Leeds albino lev Long-Evans lew Lewis lwj...

12

E-Print Network 3.0 - albinus rat wistar Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

(C3H RIII)F1... 344Tox fdr FDRL fds Food and Drug Research Laboratories stock rats fis Fischer fmf Fischer 344Mai f... :(LE) lee Leeds albino lev Long-Evans lew Lewis lwj...

13

Susceptibility of Enterobacter to Cefamandole: Evidence for a High Mutation Rate to Resistance  

Science Journals Connector (OSTI)

...ipppped-tubphenomenon was studied with E. numbers of colonies growing are shown in cla lsrains and6, E. aerogenes strains Table 2.. u of Eere 4 and 8, and E. liquefaciens strain 11. The appxiatelv 10- toX-7 whisomnatible broth cultures that grew in the next highest...

C. M. Findell; J. C. Sherris

1976-06-01T23:59:59.000Z

14

Infection Structureâ??Specific Expression of β-1,3-Glucan Synthase Is Essential for Pathogenicity of Colletotrichum graminicola and Evasion of β-Glucanâ??Triggered Immunity in Maize  

Science Journals Connector (OSTI)

...that forced expression of GLS1 led to reduction of hyphal diameters...grown at 23C under continuous fluorescent light (Climas Control CIR...onion (Allium cepa cv Grano) bulbs were used to assess virulence...and ToxB promoter-driven fluorescent protein expression vectors...

Ely Oliveira-Garcia; Holger B. Deising

2013-06-28T23:59:59.000Z

15

Environ. Sci. Technol. 1988, 22, 651-658 Physical-Chemical Properties of Chlorinated Dibenzo-p-dioxins  

E-Print Network [OSTI]

Environ. Sci. Technol. 1988, 22, 651-658 Physical-Chemical Properties of Chlorinated Dibenzo-p-dioxins assessment purposes. ~~~ ~ Introduction The polychlorinated dibenzo-p-dioxins (PCDDs) are a group of 75 about PCDD tox- icity and exposure are required. Several dioxin congeners have been shown

Gobas, Frank

16

LITHIUM--2002 46.1 By Joyce A. Ober  

E-Print Network [OSTI]

recycling operation in Trail, British Columbia, Canada. Another ToxCo subsidiary, Ozark Fluorine Specialties, the concentration of the brine increases through solar evaporation to 6,000 ppm lithium. When the lithium chloride carbonate production. Australia, Canada, and Zimbabwe were important sources of lithium concentrates

17

Poroelasticity: parameters reviewed  

Science Journals Connector (OSTI)

......pressure parameter), storage parameters, the Darcy...the variability of the storage coefficient as function...effects associated with the long-term compaction of sedimentary...underground nuclear waste storage, exploitation of geothermal......

H.-J. Kümpel

1991-06-01T23:59:59.000Z

18

Cosmological parameters are dressed  

E-Print Network [OSTI]

In the context of the averaging problem in relativistic cosmology, we provide a key to the interpretation of cosmological parameters by taking into account the actual inhomogeneous geometry of the Universe. We discuss the relation between `bare' cosmological parameters determining the cosmological model, and the parameters interpreted by observers with a ``Friedmannian bias'', which are `dressed' by the smoothed-out geometrical inhomogeneities of the surveyed spatial region.

Thomas Buchert; Mauro Carfora

2002-10-15T23:59:59.000Z

19

Photon Source Parameters  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Photon Source Parameters Photon Source Parameters Photon Source Parameters Print Summary Graph of Brightness Curves for All Insertion Devices Insertion Device and Bend Magnet Parameters Bend Magnet Superbend Magnet U30 Undulator U50 Undulator U80 Undulator U100 Undulator W114 Wiggler The ALS has six elliptically polarizing undulators, two in straight 4, two in straight 11, and one each in straights 6 and 7. All are arranged with chicanes so that two such devices can be installed to feed two independent beamlines. They can be used in a variety of polarization modes, including circular, elliptical, horizontal, and vertical. These modes can be chosen by appropriate phasing of the magnet rows. The brightness and flux curves below are shown for horizontal and circular polarization. Curves for elliptical and vertical polarization are similar to the horizontal polarization curve, but the minimum photon energy is higher.

20

Parameter Estimation Through Ignorance  

E-Print Network [OSTI]

Dynamical modelling lies at the heart of our understanding of physical systems. Its role in science is deeper than mere operational forecasting, in that it allows us to evaluate the adequacy of the mathematical structure of our models. Despite the importance of model parameters, there is no general method of parameter estimation outside linear systems. A new relatively simple method of parameter estimation for nonlinear systems is presented, based on variations in the accuracy of probability forecasts. It is illustrated on the Logistic Map, the Henon Map and the 12-D Lorenz96 flow, and its ability to outperform linear least squares in these systems is explored at various noise levels and sampling rates. As expected, it is more effective when the forecast error distributions are non-Gaussian. The new method selects parameter values by minimizing a proper, local skill score for continuous probability forecasts as a function of the parameter values. This new approach is easier to implement in practice than alternative nonlinear methods based on the geometry of attractors or the ability of the model to shadow the observations. New direct measures of inadequacy in the model, the "Implied Ignorance" and the information deficit are introduced.

Hailiang Du; Leonard A. Smith

2012-06-06T23:59:59.000Z

Note: This page contains sample records for the topic "tox parameter tox" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Photon Source Parameters  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Photon Source Parameters Print Photon Source Parameters Print Summary Graph of Brightness Curves for All Insertion Devices Insertion Device and Bend Magnet Parameters Bend Magnet Superbend Magnet U30 Undulator U50 Undulator U80 Undulator U100 Undulator W114 Wiggler The ALS has six elliptically polarizing undulators, two in straight 4, two in straight 11, and one each in straights 6 and 7. All are arranged with chicanes so that two such devices can be installed to feed two independent beamlines. They can be used in a variety of polarization modes, including circular, elliptical, horizontal, and vertical. These modes can be chosen by appropriate phasing of the magnet rows. The brightness and flux curves below are shown for horizontal and circular polarization. Curves for elliptical and vertical polarization are similar to the horizontal polarization curve, but the minimum photon energy is higher.

22

Photon Source Parameters  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Photon Source Parameters Print Photon Source Parameters Print Summary Graph of Brightness Curves for All Insertion Devices Insertion Device and Bend Magnet Parameters Bend Magnet Superbend Magnet U30 Undulator U50 Undulator U80 Undulator U100 Undulator W114 Wiggler The ALS has six elliptically polarizing undulators, two in straight 4, two in straight 11, and one each in straights 6 and 7. All are arranged with chicanes so that two such devices can be installed to feed two independent beamlines. They can be used in a variety of polarization modes, including circular, elliptical, horizontal, and vertical. These modes can be chosen by appropriate phasing of the magnet rows. The brightness and flux curves below are shown for horizontal and circular polarization. Curves for elliptical and vertical polarization are similar to the horizontal polarization curve, but the minimum photon energy is higher.

23

Photon Source Parameters  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Photon Source Parameters Print Photon Source Parameters Print Summary Graph of Brightness Curves for All Insertion Devices Insertion Device and Bend Magnet Parameters Bend Magnet Superbend Magnet U30 Undulator U50 Undulator U80 Undulator U100 Undulator W114 Wiggler The ALS has six elliptically polarizing undulators, two in straight 4, two in straight 11, and one each in straights 6 and 7. All are arranged with chicanes so that two such devices can be installed to feed two independent beamlines. They can be used in a variety of polarization modes, including circular, elliptical, horizontal, and vertical. These modes can be chosen by appropriate phasing of the magnet rows. The brightness and flux curves below are shown for horizontal and circular polarization. Curves for elliptical and vertical polarization are similar to the horizontal polarization curve, but the minimum photon energy is higher.

24

Photon Source Parameters  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Photon Source Parameters Print Photon Source Parameters Print Summary Graph of Brightness Curves for All Insertion Devices Insertion Device and Bend Magnet Parameters Bend Magnet Superbend Magnet U30 Undulator U50 Undulator U80 Undulator U100 Undulator W114 Wiggler The ALS has six elliptically polarizing undulators, two in straight 4, two in straight 11, and one each in straights 6 and 7. All are arranged with chicanes so that two such devices can be installed to feed two independent beamlines. They can be used in a variety of polarization modes, including circular, elliptical, horizontal, and vertical. These modes can be chosen by appropriate phasing of the magnet rows. The brightness and flux curves below are shown for horizontal and circular polarization. Curves for elliptical and vertical polarization are similar to the horizontal polarization curve, but the minimum photon energy is higher.

25

BNL | ATF Beamline Parameters  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Beamline Parameters Beamline Parameters Electron beam energy: 25 to 76 MeV Temporal structure: Macropulse length: 3 microseconds Macropulse repetition rate from under 1 PPS to 3 PPS. Micropulse repetition period 12.25 ns or 24.5 ns. Micropulse length variable from about 1 ps FWHM to 10 ps FWHM. Electron beam charge: continuously variable. Single micropulse charge from zero to a few nanoculombs. Bunch train charge up to about 10 nanoculombs. Emittance: depends on various conditions, e.g. peak current, gun field, microbunch length etc. At 1 nC we have measured the emittance at 2.6 mm mrad (rms normalized) at a bunch length of 10 ps FWHM. The local emittance (Slice Emittance) is smaller, measured 1.4 mm mrad for a slice out of the 1 nC bunch. Stability: (approx.) 1 ps in short term phase, 1% of beam diameter

26

THE SOCIAL STRUCTURING OF POSTINDUSTRIAL CONFLICT: CITIZEN POSITIONS ON ENVIRONMENTAL DIMENSIONS  

E-Print Network [OSTI]

old and new societies whieh only new conceptual formulations and methodological techniques can ferret out. The approach draws its inspiration from recent research on dynamical systems (Briggs and Peat, 1989;Dendrinos and Sonis, 1990; Peitgen and Sanpe...Vid Peat. 1989. Turbulent Mirror N Brown, Phil and Ed 0 • ew York: Harper and , WIn Mikk JLeukenlia, and C . e ~en. 1990. No Saf; p .. . Press. ommuntty Action. Berkeley CA- ~ .lac~. ToxIc Waste, .: Clement, Wallace d ' . nlverslty of California G . ,an...

Kowalewski, David

1996-04-01T23:59:59.000Z

27

Electrochromic Glazings: Animation Parameters  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Glazings Glazings Animation Simulation Parameters The Electrochromic Glazing Office Animation is created using an image compositing method whereby separate images of the office generated with only one source of illumination are added together in variable percentages to come up with the final image. This method assumes that the sources of illumination do not change position through the animation sequence. Although the sun does move approximately 5 degrees during the span of this 20 minute animation sequence, because this movement is not the focus of the simulation and does not significantly change the intensity of the solar exposure, it is ignored. This method takes advantage of the principal of the scalability of light to avoid the significant time involved in calculating separate Radiance renderings for each combination of sky condition (direct sun versus no direct sun) and electrochromic glazing transmission.

28

Nevada Test Site 2001 Data Report: Groundwater Monitoring Program Area 5 Radioactive Waste Management Site  

SciTech Connect (OSTI)

This report is a compilation of the calendar year 2001 groundwater sampling results from the Area 5 Radioactive Waste Management Site (RWMS). Contamination indicator data are presented in control chart and tabular form with investigation levels (ILs) indicated. Gross water chemistry data are presented in graphical and tabular form. Other information in the report includes, the Cumulative Chronology for Area 5 RWMS Groundwater Monitoring Program, a brief description of the site hydrogeology, and the groundwater sampling procedure. Wells Ue5PW-1, Ue5PW-2, and Ue5PW-3 were sampled semiannually for the required analytes: pH, specific conductance, major cations/anions, metals, tritium, total organic carbon (TOC), and total organic halogen (TOX). Due to detections of TOC and TOX in some samples collected in 2000, a plan, as approved by the Nevada Division of Environmental Protection (NDEP), was executed to collect an increased number and type of samples in 2001. Results from all samples collected in 2001 were below ILs. These data indicate that there has been no measurable impact to the uppermost aquifer from the Resource Conservation and Recovery Act (RCRA) regulated unit within the Area 5 RWMS and confirm that the detections of TOC and TOX in 2000 were false positives. There were no major changes noted in the monitored groundwater elevation. There continues to be an extremely small gradient to the northeast with an average flow velocity of less than one foot per year.

Y. E. Townsend

2002-02-01T23:59:59.000Z

29

Nucleic Acid Standards - Refinement Parameters  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Refinement Parameters Refinement Parameters The DNA/RNA topology and parameter files for X-PLOR are shown below. These were tested with DNA structures and with protein-DNA complexes. X-PLOR topology file X-PLOR parameter files: X-PLOR parameter file For the refinement of high resolution structures (< 1.7 Angstroms) the parameter file with distinct bond distances and bond angles for both C2'-endo and C3'-endo conformations should be considered: X-PLOR parameter file for high resolution structures "New Parameters for the Refinement of Nucleic Acid Containing Structures." Gary Parkinson, Jaroslav Vojtechovsky, Lester Clowney, Axel Brunger*, and Helen M. Berman. (1996) Acta Cryst. D 52, 57-64 Rutgers University, Department of Chemistry, Piscataway, NJ 08855-0939; *The Howard Hughes Medical Institute and Departments of Molecular and

30

Subsurface Geotechnical Parameters Report  

SciTech Connect (OSTI)

The Yucca Mountain Project is entering a the license application (LA) stage in its mission to develop the nation's first underground nuclear waste repository. After a number of years of gathering data related to site characterization, including activities ranging from laboratory and site investigations, to numerical modeling of processes associated with conditions to be encountered in the future repository, the Project is realigning its activities towards the License Application preparation. At the current stage, the major efforts are directed at translating the results of scientific investigations into sets of data needed to support the design, and to fulfill the licensing requirements and the repository design activities. This document addresses the program need to address specific technical questions so that an assessment can be made about the suitability and adequacy of data to license and construct a repository at the Yucca Mountain Site. In July 2002, the U.S. Nuclear Regulatory Commission (NRC) published an Integrated Issue Resolution Status Report (NRC 2002). Included in this report were the Repository Design and Thermal-Mechanical Effects (RDTME) Key Technical Issues (KTI). Geotechnical agreements were formulated to resolve a number of KTI subissues, in particular, RDTME KTIs 3.04, 3.05, 3.07, and 3.19 relate to the physical, thermal and mechanical properties of the host rock (NRC 2002, pp. 2.1.1-28, 2.1.7-10 to 2.1.7-21, A-17, A-18, and A-20). The purpose of the Subsurface Geotechnical Parameters Report is to present an accounting of current geotechnical information that will help resolve KTI subissues and some other project needs. The report analyzes and summarizes available qualified geotechnical data. It evaluates the sufficiency and quality of existing data to support engineering design and performance assessment. In addition, the corroborative data obtained from tests performed by a number of research organizations is presented to reinforce conclusions derived from the pool of data gathered within a full QA-controlled domain. An evaluation of the completeness of the current data is provided with respect to the requirements for geotechnical data to support design and performance assessment.

D. Rigby; M. Mrugala; G. Shideler; T. Davidsavor; J. Leem; D. Buesch; Y. Sun; D. Potyondy; M. Christianson

2003-12-17T23:59:59.000Z

31

WIPP Compliance Certification Application calculations parameters. Part 1: Parameter development  

SciTech Connect (OSTI)

The Waste Isolation Pilot Plant (WIPP) in southeast New Mexico has been studied as a transuranic waste repository for the past 23 years. During this time, an extensive site characterization, design, construction, and experimental program was completed, which provided in-depth understanding of the dominant processes that are most likely to influence the containment of radionuclides for 10,000 years. Nearly 1,500 parameters were developed using information gathered from this program; the parameters were input to numerical models for WIPP Compliance Certification Application (CCA) Performance Assessment (PA) calculations. The CCA probabilistic codes frequently require input values that define a statistical distribution for each parameter. Developing parameter distributions begins with the assignment of an appropriate distribution type, which is dependent on the type, magnitude, and volume of data or information available. The development of the parameter distribution values may require interpretation or statistical analysis of raw data, combining raw data with literature values, scaling of lab or field data to fit code grid mesh sizes, or other transformation. Parameter development and documentation of the development process were very complicated, especially for those parameters based on empirical data; they required the integration of information from Sandia National Laboratories (SNL) code sponsors, parameter task leaders (PTLs), performance assessment analysts (PAAs), and experimental principal investigators (PIs). This paper, Part 1 of two parts, contains a discussion of the parameter development process, roles and responsibilities, and lessons learned. Part 2 will discuss parameter documentation, traceability and retrievability, and lessons learned from related audits and reviews.

Howarth, S.M.

1997-11-14T23:59:59.000Z

32

Efficient navigation of parameter landscapes  

Science Journals Connector (OSTI)

The covariance matrix of the gradient of the cost function contains a great deal of information about a parameter space. The eigenvectors of the covariance matrix form an optimal basis (in the sense of data compression) for the gradient. Since search algorithms base their decisions on the gradient (often in an indirect fashion) the eigenvectors in some sense form an optimal set of generators for navigating parameter landscapes. For problems involving a long valley there is usually an eigenvector oriented parallel to the valley. Search algorithms based on the optimal generators may find the deepest point in the valley several times faster than algorithms based on other generators. The covariance matrix also contains information about the key underlying parameters. The most important parameters correspond to the eigenvectors associated with the largest eigenvalues. This information can be exploited to reparametrize with a smaller number of parameters. The covariance matrix is the integral of the outer product of the gradient over the parameter space. Obtaining a good estimate of this integral with the Monte Carlo method usually requires relatively little effort even for high?dimensional parameter spaces. Examples are presented for geoacoustic inverse problems involving acoustic sources and receivers located in the ocean.

Michael D. Collins

1994-01-01T23:59:59.000Z

33

Fixed Parameter Algorithms Daniel Marx  

E-Print Network [OSTI]

, for example k-CLIQUE and k-INDEPENDENT SET, no FPT algorithm is known. Can we show that these problems if and only if it has a vertex cover of size n - k. Transforming an INDEPENDENT SET instance (G, k, but INDEPENDENT SET is not known to be FPT. Fixed Parameter Algorithms ­ p.5/41 #12;Parameterized reduction

Fondements et Applications, Université Paris 7

34

Fixed Parameter Algorithms Dniel Marx  

E-Print Network [OSTI]

complexity Problem: VERTEX COVER INDEPENDENT SET Input: Graph G, integer k Graph G, integer k Question-complete NP-complete Fixed Parameter Algorithms ­ p.3/40 #12;Parameterized complexity Problem: VERTEX COVER INDEPENDENT SET Input: Graph G, integer k Graph G, integer k Question: Is it possible to cover the edges

Narasayya, Vivek

35

Measuring neutrino oscillation parameters using $\  

SciTech Connect (OSTI)

MINOS is a long-baseline neutrino oscillation experiment. It consists of two large steel-scintillator tracking calorimeters. The near detector is situated at Fermilab, close to the production point of the NuMI muon-neutrino beam. The far detector is 735 km away, 716m underground in the Soudan mine, Northern Minnesota. The primary purpose of the MINOS experiment is to make precise measurements of the 'atmospheric' neutrino oscillation parameters ({Delta}m{sub atm}{sup 2} and sin{sup 2} 2{theta}{sub atm}). The oscillation signal consists of an energy-dependent deficit of {nu}{sub {mu}} interactions in the far detector. The near detector is used to characterize the properties of the beam before oscillations develop. The two-detector design allows many potential sources of systematic error in the far detector to be mitigated by the near detector observations. This thesis describes the details of the {nu}{sub {mu}}-disappearance analysis, and presents a new technique to estimate the hadronic energy of neutrino interactions. This estimator achieves a significant improvement in the energy resolution of the neutrino spectrum, and in the sensitivity of the neutrino oscillation fit. The systematic uncertainty on the hadronic energy scale was re-evaluated and found to be comparable to that of the energy estimator previously in use. The best-fit oscillation parameters of the {nu}{sub {mu}}-disappearance analysis, incorporating this new estimator were: {Delta}m{sup 2} = 2.32{sub -0.08}{sup +0.12} x 10{sup -3} eV{sup 2}, sin {sup 2} 2{theta} > 0.90 (90% C.L.). A similar analysis, using data from a period of running where the NuMI beam was operated in a configuration producing a predominantly {bar {nu}}{sub {mu}} beam, yielded somewhat different best-fit parameters {Delta}{bar m}{sup 2} = (3.36{sub -0.40}{sup +0.46}(stat.) {+-} 0.06(syst.)) x 10{sup -3}eV{sup 2}, sin{sup 2} 2{bar {theta}} = 0.86{sub -0.12}{sup _0.11}(stat.) {+-} 0.01(syst.). The tension between these results is intriguing, and additional antineutrino data is currently being taken in order to further investigate this apparent discrepancy.

Backhouse, Christopher James; /Oxford U.

2011-02-01T23:59:59.000Z

36

System and method for motor parameter estimation  

DOE Patents [OSTI]

A system and method for determining unknown values of certain motor parameters includes a motor input device connectable to an electric motor having associated therewith values for known motor parameters and an unknown value of at least one motor parameter. The motor input device includes a processing unit that receives a first input from the electric motor comprising values for the known motor parameters for the electric motor and receive a second input comprising motor data on a plurality of reference motors, including values for motor parameters corresponding to the known motor parameters of the electric motor and values for motor parameters corresponding to the at least one unknown motor parameter value of the electric motor. The processor determines the unknown value of the at least one motor parameter from the first input and the second input and determines a motor management strategy for the electric motor based thereon.

Luhrs, Bin; Yan, Ting

2014-03-18T23:59:59.000Z

37

Proposed ILC Parameters T.O. Raubenheimer  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

-05-98 -05-98 Proposed ILC Parameters T.O. Raubenheimer and K. Yokoya Introduction In this note, we describe the proposed working parameter set for the KEK-SLAC ILC linear collider and discuss the reasons leading to the values listed; more ex- tensive discussion of the optimization process will be found in subsequent notes. The parameter set is listed in Table 1 and is compared with the JLC 3-97 parameters and the NLC ZDR parameters in Table 2. The new parameter set has an operating plane which ranges from low IP emittances and high luminosity (cases A) to large IP emittances and smaller luminosity (cases C). Over this range, the bunch charge, bunch length, and IP beta functions are varied, however, the parameters have been chosen so that the tolerances on the accelerating structures are roughly constant. The collider must be designed to operate over the entire parameter range. In all cases,

38

Parameters Identification for Motorcycle Simulator's Platform Characterization  

E-Print Network [OSTI]

Parameters Identification for Motorcycle Simulator's Platform Characterization L. Nehaoua H modeling and parameters identification of a motorcycle simulator's platform. This model begins with some (cars and motorcycles) is possible by taking in care some characteristics of land vehicles. Indeed

Paris-Sud XI, Université de

39

Planet Parameters in Microlensing Events  

E-Print Network [OSTI]

A planetary microlensing event occurs when a planet perturbs one of the two images created in a point-mass microlensing event, causing a deviation from the standard Paczy\\'nski curve. Determination of the two physical parameters that can be extracted from a planetary microlensing event, the planet/star mass ratio q, and the planet/star separation in units of the stellar Einstein ring, $y_p$, is hampered by several types of degeneracies. There are two distinct and qualitatively different classes of planetary events: major and minor image perturbations. For major image perturbations, there is a potentially crippling continuous degeneracy in q which is of order $\\delta_d^{-1}$, where $\\delta_d$ is the maximum fractional deviation of the planetary perturbation. Since the threshold of detection is expected to be $\\delta_d \\sim 5%$, this degeneracy in q can be a factor of $\\sim 20$. For minor image perturbations, the continuous degeneracy in q is considerably less severe, and is typically less than a factor 4. We show that these degeneracies can be resolved by observations from dedicated telescopes on several continents together with optical/infrared photometry from one of these sites. There also exists a class of discrete degeneracies. These are typically easy to resolve given good temporal coverage of the planetary event. Unambiguous interpretation of planetary microlensing events requires the resolution of both types of degeneracy. We describe the degeneracies in detail and specify the situations in which they are problematic. We also describe how individual planet masses and physical projected separations can be measured.

B. Scott Gaudi; Andrew Gould

1996-10-16T23:59:59.000Z

40

A study to determine possible methods for increasing the germination of Texas wintergrass (Stipa leucotricha Trin. & Rupr.  

E-Print Network [OSTI]

plants of the United States de- pend on seed dormancy for surv1val. Dormancy 1s detrimental in some field crops and pasture plants where the seeds are harvested and sown in the fall, Very often the period between harvest and sowing does not pro- vide... for oxygen and high 1n carbon d. iox1de or other inert gases or when the seed coats are imperm- eable to gas. The oxidizing system becomes greatly inh1bited and intermediate products of partial anaerobic respiration such as acetaldehyde and other tox1c...

Herrero, Fay Alberto

1955-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tox parameter tox" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

An electron microscopy study of ground-nut poisoning in turkey poults  

E-Print Network [OSTI]

condition. Similar toxic effects in ducklings, chickens, rats, guinea pigs, cows and pigs have also been reported. In general, there is little available information about how and where tbe toxic principles of any kind act in the cells structures. Also... an interpretation of the most significant ultrastructure changes, which sre found in liver cells 1n experimental poults on tox1c Brasilian ground-nut meal, and to correlate the observed change in ultrastructura with the ultrastructure of normal poults anc ~1th...

Martin, Alcides Amilcar

2012-06-07T23:59:59.000Z

42

Free Parameters and Frameworks in Minimal Supersymmetry  

E-Print Network [OSTI]

405 Appendix A Free Parameters and Frameworks in Minimal Supersymmetry It is useful to discuss what the various schemes that exist for reducing the set of free parameters to a manageable number. The information, and so is fixed by experiment. The free parameters consist mainly of the coe#cients of the ``soft

California at Berkeley, University of

43

Free Parameters and Frameworks in Minimal Supersymmetry  

E-Print Network [OSTI]

405 Appendix A Free Parameters and Frameworks in Minimal Supersymmetry It is useful to discuss what the various schemes that exist for reducing the set of free parameters to a manageable number. The information, and so is fixed by experiment. The free parameters consist mainly of the coefficients of the "soft

California at Berkeley, University of

44

Sensitivity analysis of Stirling engine design parameters  

SciTech Connect (OSTI)

In the preliminary Stirling engine design process, the values of some design parameters (temperature ratio, swept volume ratio, phase angle and dead volume ratio) have to be assumed; as a matter of fact it can be difficult to determine the best values of these parameters for a particular engine design. In this paper, a mathematical model is developed to analyze the sensitivity of engine's performance variations corresponding to variations of these parameters.

Naso, V.; Dong, W.; Lucentini, M.; Capata, R.

1998-07-01T23:59:59.000Z

45

Adjustable Robust Parameter Design with Unknown Distributions  

E-Print Network [OSTI]

Mar 27, 2013 ... Adjustable Robust Parameter Design with Unknown Distributions. ihsan Yanikoglu(i.yanikoglu ***at*** uvt.nl) Dick den Hertog(d.denhertog ...

ihsan Yanikoglu

2013-03-27T23:59:59.000Z

46

Thermal Hydraulic Simulations, Error Estimation and Parameter  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Error Estimation and Parameter Sensitivity Studies in Drekar::CFD Thomas M. Smith, John N. Shadid, Roger P. Pawlowski, Eric C. Cyr and Timothy M. Wildey Sandia National...

47

Adjoint Lattice Boltzmann Equation for Parameter Identification  

E-Print Network [OSTI]

Adjoint Lattice Boltzmann Equation for Parameter Identification M.M. Tekitek a,b , M. Bouzidi c , F@asci.fr, francois.dubois@math.u-psud.fr, pierre.lal@free.fr 26 January 2005 Abstract. The Lattice Boltzmann to the Lattice Boltzmann Equation to get expressions for the derivatives of the cost function vs. parameters

Boyer, Edmond

48

PARAMETER ESTIMATION IN PETROLEUM AND GROUNDWATER MODELING  

E-Print Network [OSTI]

on grand challenge problems. In today's petroleum industry, reservoir simulators are routinely usedPARAMETER ESTIMATION IN PETROLEUM AND GROUNDWATER MODELING R.E. Ewing, M.S. Pilant, J.G. Wade in the model, the numerical discretization used, and the solution algorithms employed. Parameter identification

Ewing, Richard E.

49

MFV Reductions of MSSM Parameter Space  

E-Print Network [OSTI]

The 100+ free parameters of the minimal supersymmetric standard model (MSSM) make it computationally difficult to compare systematically with data, motivating the study of specific parameter reductions such as the cMSSM and pMSSM. Here we instead study the reductions of parameter space implied by using minimal flavour violation (MFV) to organise the R-parity conserving MSSM, with a view towards systematically building in constraints on flavour-violating physics. Within this framework the space of parameters is reduced by expanding soft supersymmetry-breaking terms in powers of the Cabibbo angle, leading to a 24-, 30- or 42-parameter framework (which we call MSSM-24, MSSM-30, and MSSM-42 respectively), depending on the order kept in the expansion. We provide a Bayesian global fit to data of the MSSM-30 parameter set to show that this is manageable with current tools. We compare the MFV reductions to the 19-parameter pMSSM choice and show that the pMSSM is not contained as a subset. The MSSM-30 analysis favours a relatively lighter TeV-scale pseudoscalar Higgs boson and $\\tan \\beta \\sim 10$ with multi-TeV sparticles.

S. S. AbdusSalam; C. P. Burgess; F. Quevedo

2015-02-09T23:59:59.000Z

50

NREL: PVWatts - How to Change Parameters  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Change Parameters Change Parameters The PVWattsTM calculator allows users to substitute its default input parameters with custom values. Learn how to change the PVWatts parameters for: DC rating DC-to-AC derate factor Array type Tilt angle Azimuth angle Electricity cost DC Rating The size of a photovoltaic (PV) system is its nameplate DC power rating. This is determined by adding the PV module power listed on the nameplates of the PV modules in watts and then dividing the sum by 1,000 to convert it to kilowatts (kW). PV module power ratings are for standard test conditions (STC) of 1,000 W/m2 solar irradiance and 25°C PV module temperature. The default PV system size is 4 kW. This corresponds to a PV array area of approximately 35 m2 (377 ft2). Caution: For correct results, the DC rating input must be the nameplate DC

51

Quantifying the parameters of successful agricultural producers  

E-Print Network [OSTI]

The primary purpose of the study was to quantify the parameters of successful agricultural producers. Through the use of the Financial and Risk Management (FARM) Assistance database, this study evaluated economic measures for row-crop producers...

Kaase, Gregory Herman

2006-08-16T23:59:59.000Z

52

Uncertainty evaluation of delayed neutron decay parameters  

E-Print Network [OSTI]

parameters fit their individual measurement data well in spite of these differences. This dissertation focuses on evaluation of the errors and methods of delayed neutron relative yields and decay constants for thermal fission of U-235. Various numerical...

Wang, Jinkai

2009-05-15T23:59:59.000Z

53

Nonlinear Ensemble Parameter Perturbation for Climate Models  

Science Journals Connector (OSTI)

Model parameters can introduce significant uncertainties in climate simulations. Sensitivity analysis provides a way to quantify such uncertainties. Existing sensitivity analysis methods, however, cannot estimate the maximum sensitivity of the ...

Xudong Yin; Juanjuan Liu; Bin Wang

54

Orthogonality of Macdonald polynomials with unitary parameters  

E-Print Network [OSTI]

For any admissible pair of irreducible reduced crystallographic root systems, we present discrete orthogonality relations for a finite-dimensional system of Macdonald polynomials with parameters on the unit circle subject to a truncation relation.

J. F. van Diejen; E. Emsiz

2013-08-12T23:59:59.000Z

55

Measurement on physical parameters of raindrop energy  

Science Journals Connector (OSTI)

As a result, how to determine the rainfall energy (e) and intensity (I) of one unit period is the key to measure and calculate the energy. Between these two parameters, I is ... rainfall precipitation and rainfal...

Minghang Guo; Jinshi Jian; Zhun Zhao; Juying Jiao

2013-12-01T23:59:59.000Z

56

Vertical Axis Wind Turbine Foundation parameter study  

SciTech Connect (OSTI)

The dynamic failure criterion governing the dimensions of prototype Vertical Axis Wind Turbine Foundations is treated as a variable parameter. The resulting change in foundation dimensions and costs is examined.

Lodde, P.F.

1980-07-01T23:59:59.000Z

57

Nonlinear parameter estimation in parallel computing environments  

E-Print Network [OSTI]

This thesis examines issues related to the paralielization of PESTI a parameter estimation code which was originally developed by Dr. A. T. Watson. PEST is based on the trust region implementation of Levenberg-Marquardt nonlinear least square...

Li, Jie

2012-06-07T23:59:59.000Z

58

Nevada Test Site 2002 Data Report: Groundwater Monitoring Program Area 5 Radioactive Waste Management Site  

SciTech Connect (OSTI)

This report is a compilation of the calendar year 2002 groundwater sampling results from the Area 5 Radioactive Waste Management Site (RWMS). Wells Ue5PW-1, Ue5PW-2, and Ue5PW-3 were sampled semiannually for the required analytes: pH, specific conductance, major cations/anions, metals, tritium, total organic carbon (TOC), and total organic halogen (TOX). Results from all samples collected in 2002 were within established criteria. These data indicate that there has been no measurable impact to the uppermost aquifer from the Resource Conservation and Recovery Act(RCRA) regulated unit within the RWMS-5 and confirm that the detections of TOC and TOX in 2000 were false positives. Contamination indicator data are presented in control chart and tabular form with investigation levels (ILs) indicated. Gross water chemistry data are presented in graphical and tabular form. There were no major changes noted in the monitored groundwater elevation. There continues to be an extremely small gradient to the northeast with an average flow velocity of less than one foot per year. Other information in the report includes, the Cumulative Chronology for Area 5 RWMS Groundwater Monitoring Program, a brief description of the site hydrogeology, and the groundwater sampling procedure.

Y. E. Townsend

2003-02-01T23:59:59.000Z

59

2003 Data Report: Groundwater Monitoring Program, Area 5 Radioactive Waste Management Site, Nevada Test Site  

SciTech Connect (OSTI)

This report is a compilation of the calendar year 2003 groundwater sampling results from the Area 5 Radioactive Waste Management Site, Nevada Test Site. Wells Ue5PW-1, Ue5PW-2, and Ue5PW-3 were sampled semi-annually for the required analytes: pH, specific conductance, total organic carbon (TOC), total organic halides (TOX), tritium, and major cations/anions. Results from all samples collected in 2003 were within established criteria. These data indicate that there has been no measurable impact to the uppermost aquifer from the Resource Conservation and Recovery Act (RCRA) regulated unit within the Area 5 Radioactive Waste Management Site and confirm that any previous detections of TOC and TOX were false positives. Contamination indicator data are presented in control chart and tabular form with investigation levels indicated. Gross water chemistry data are presented in graphical and tabular form. There were no major changes noted in the monitored groundwater elevations. There continues to be an extremely small gradient to the northeast with an average flow velocity of less than one foot per year. Other information in the report includes a Cumulative Chronology for the Area 5 Radioactive Waste Management Site Groundwater Monitoring Program, a brief description of the site hydrogeology, and the current groundwater sampling procedure.

Bechtel Nevada

2004-02-01T23:59:59.000Z

60

Cosmological parameter estimation: impact of CMB aberration  

SciTech Connect (OSTI)

The peculiar motion of an observer with respect to the CMB rest frame induces an apparent deflection of the observed CMB photons, i.e. aberration, and a shift in their frequency, i.e. Doppler effect. Both effects distort the temperature multipoles a{sub lm}'s via a mixing matrix at any l. The common lore when performing a CMB based cosmological parameter estimation is to consider that Doppler affects only the l = 1 multipole, and neglect any other corrections. In this paper we reconsider the validity of this assumption, showing that it is actually not robust when sky cuts are included to model CMB foreground contaminations. Assuming a simple fiducial cosmological model with five parameters, we simulated CMB temperature maps of the sky in a WMAP-like and in a Planck-like experiment and added aberration and Doppler effects to the maps. We then analyzed with a MCMC in a Bayesian framework the maps with and without aberration and Doppler effects in order to assess the ability of reconstructing the parameters of the fiducial model. We find that, depending on the specific realization of the simulated data, the parameters can be biased up to one standard deviation for WMAP and almost two standard deviations for Planck. Therefore we conclude that in general it is not a solid assumption to neglect aberration in a CMB based cosmological parameter estimation.

Catena, Riccardo [Institut für Theoretische Physik, Friedrich-Hund-Platz 1, 37077 Göttingen (Germany); Notari, Alessio, E-mail: riccardo.catena@theorie.physik.uni-goettingen.de, E-mail: notari@ffn.ub.es [Departament de Física Fondamental i Institut de Ciéncies del Cosmos, Universitat de Barcelona, Martí i Franqués 1, 08028 Barcelona (Spain)

2013-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "tox parameter tox" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Chemical kinetics parameters of nuclear graphite gasification  

Science Journals Connector (OSTI)

This paper provides chemical kinetics parameters for the gasification of nuclear graphite grades of IG-110, IG-430, NBG-18 and NBG-25 and presents empirical correlations for their surface areas of free active sites as a function of mass. The kinetics parameters for the four elementary chemical reactions of gasification of these grades of nuclear graphite include the values and Gaussian distributions of the specific activation energies and the values of the pre-exponential rate coefficients for the adsorption of oxygen and desorption of CO and CO2 gases. The values of these parameters and the surface area of free active sites for IG-110 and NB-25, with fine and medium petroleum coke filler particles, are nearly the same, but slightly different from those of NBG-18 and IG-430, with medium and fine coal tar pitch coke filler particles. Recommended parameters are applicable to future safety analysis of high and very high temperature gas cooled reactors in the unlikely event of a massive air ingress accident.

Mohamed S. El-Genk; Jean-Michel P. Tournier

2013-01-01T23:59:59.000Z

62

Planck 2015 results. XIII. Cosmological parameters  

E-Print Network [OSTI]

We present results based on full-mission Planck observations of temperature and polarization anisotropies of the CMB. These data are consistent with the six-parameter inflationary LCDM cosmology. From the Planck temperature and lensing data, for this cosmology we find a Hubble constant, H0= (67.8 +/- 0.9) km/s/Mpc, a matter density parameter Omega_m = 0.308 +/- 0.012 and a scalar spectral index with n_s = 0.968 +/- 0.006. (We quote 68% errors on measured parameters and 95% limits on other parameters.) Combined with Planck temperature and lensing data, Planck LFI polarization measurements lead to a reionization optical depth of tau = 0.066 +/- 0.016. Combining Planck with other astrophysical data we find N_ eff = 3.15 +/- 0.23 for the effective number of relativistic degrees of freedom and the sum of neutrino masses is constrained to Spatial curvature is found to be |Omega_K| < 0.005. For LCDM we find a limit on the tensor-to-scalar ratio of r <0.11 consistent with the B-mode constraints fr...

,

2015-01-01T23:59:59.000Z

63

Lumped-parameter models Lars Bo Ibsen  

E-Print Network [OSTI]

of Civil Engineering Division of Water and Soil Lumped-parameter models by Lars Bo Ibsen Morten Liingaard explanations and results than typically allowed in scientific journals. Technical Memoranda are produced of this kind. Contract Reports are produced to report scientific work carried out under contract. Publications

64

Models and parameters for environmental radiological assessments  

SciTech Connect (OSTI)

This book presents a unified compilation of models and parameters appropriate for assessing the impact of radioactive discharges to the environment. Models examined include those developed for the prediction of atmospheric and hydrologic transport and deposition, for terrestrial and aquatic food-chain bioaccumulation, and for internal and external dosimetry. Chapters have been entered separately into the data base. (ACR)

Miller, C W [ed.] [ed.

1984-01-01T23:59:59.000Z

65

SEGMENTATION INDEPENDENT ESTIMATES OF TURBULENCE PARAMETERS  

E-Print Network [OSTI]

SEGMENTATION INDEPENDENT ESTIMATES OF TURBULENCE PARAMETERS G. C. Papanicolaoua, K. Solnab and D, University of Utah, Salt Lake City, UT 84112 cPhillips Laboratory, Kirtland AFB, NM 87117 ABSTRACT We present of the detail coe cients at scale j. The spectrum can therefore be interpreted as representing the energy

Papanicolaou, George C.

66

HFIR Technical Parameters | ORNL Neutron Sciences  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Reactor Technical Parameters Reactor Technical Parameters Overview HFIR Pool Layout HFIR pool layout. HFIR is a beryllium-reflected, light-water-cooled and -moderated, flux-trap type reactor that uses highly enriched uranium-235 as the fuel. The image on the right is a cutaway of the reactor which shows the pressure vessel, its location in the reactor pool, and some of the experiment facilities. The preliminary conceptual design of the reactor was based on the "flux trap" principle, in which the reactor core consists of four annular regions of fuel surrounding an unfueled moderating region or "island" (see cross section view). Such a configuration permits fast neutrons leaking from the fuel to be moderated in the island and thus produces a region of very high thermal-neutron flux at the center of the island. This reservoir of

67

Calibrated Hydrothermal Parameters, Barrow, Alaska, 2013  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

A model-observation-experiment process (ModEx) is used to generate three 1D models of characteristic micro-topographical land-formations, which are capable of simulating present active thaw layer (ALT) from current climate conditions. Each column was used in a coupled calibration to identify moss, peat and mineral soil hydrothermal properties to be used in up-scaled simulations. Observational soil temperature data from a tundra site located near Barrow, AK (Area C) is used to calibrate thermal properties of moss, peat, and sandy loam soil to be used in the multiphysics Advanced Terrestrial Simulator (ATS) models. Simulation results are a list of calibrated hydrothermal parameters for moss, peat, and mineral soil hydrothermal parameters.

Adam Atchley; Scott Painter; Dylan Harp; Ethan Coon; Cathy Wilson; Anna Liljedahl; Vladimir Romanovsky

68

Sedimentary parameters of upper Barataria Bay, Louisiana  

E-Print Network [OSTI]

upon oonditions of sedimentation is exerted by currents set in motion 'by oceanic tides. Tidal activity causes sediment to be introduced into the upper bay and controls its distribution. A modifying influence i. s exerted by the influx of fresh... Classification and Distribution of Sediment Types Anomalous Areas CONDITIONS OF SEDIMENTATION Bathymetry Signifioance of Parameter Distribution Patterns Marginal areas Central bay Marginal embayments . ~ Environments of Deposition . CONCLUSIONS...

Siegert, Rudolf B

2012-06-07T23:59:59.000Z

69

Two pairing parameters in superconducting grains  

Science Journals Connector (OSTI)

Unlike bulk superconductivity, where one energy scale, the energy gap, characterizes pairing correlations, we show that in small superconducting grains there exist two different such quantities. The first characterizes collective properties of the grain, such as the condensation energy, and the second single-particle properties. To describe these two energy scales, we define two corresponding pairing parameters, and show that although both reduce to the bulk gap for large grains, this occurs at different size scales.

M. Schechter; J. von Delft; Y. Imry; Y. Levinson

2003-02-27T23:59:59.000Z

70

Online parameter estimation applied to mixed conduction/radiation  

E-Print Network [OSTI]

) is the most widely used parameter estimation algorithm for nonlinear models. The unscented Kalman filter (UKF) is a new and more accurate technique for parameter estimation. These parameter estimation techniques have been evaluated with respect to data from...

Shah, Tejas Jagdish

2005-08-29T23:59:59.000Z

71

Edmund G. Brown Jr. LIFE HISTORY PARAMETERS OF  

E-Print Network [OSTI]

History Parameters of Common Marine Fish Subject to Entrainment. California Energy Commission, PIER · Renewable Energy Technologies · Transportation Life History Parameters of Common Southern California MEdmund G. Brown Jr. Governor LIFE HISTORY PARAMETERS OF COMMON SOUTHERN CALIFORNIA MARINE FISHES

72

Critical Performance and Durability Parameters of an Integrated...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

and Durability Parameters of an Integrated Aftertreatment System used to Meet Tier II Emission Standards Critical Performance and Durability Parameters of an Integrated...

73

Single-parameter pumping in graphene  

Science Journals Connector (OSTI)

We propose a quantum pump mechanism based on the particular properties of graphene, namely chirality and bipolarity. The underlying physics is the excitation of evanescent modes entering a potential barrier from one lead, while those from the other lead do not reach the driving region. This induces a large nonequilibrium current with electrons stemming from a broad range of energies, in contrast to the narrow resonances that govern the corresponding effect in semiconductor heterostructures. Moreover, the pump mechanism in graphene turns out to be robust, with a simple parameter dependence, which is beneficial for applications. Numerical results from a Floquet scattering formalism are complemented with analytical solutions for small to moderate driving.

Pablo San-Jose; Elsa Prada; Sigmund Kohler; Henning Schomerus

2011-10-11T23:59:59.000Z

74

A variable parameter thermionic energy converter  

E-Print Network [OSTI]

A VARIABLE PARAMETER THERMIONIC ENERGY CONVERTER A Thesis By Bobby Joe Bragg Submitted to the Graduate School of the Texas A 8c M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE August, 1967 Major... LIST OF FIGURES FIGURE 1. SIMPLE SCHEMATIC OF A THERMIONIC CONVERTER PAGE 2. POWER VS SPACING WITH A MINIMUM POWER POINT 3. POWER VS SPACING WITH NO MINIMUM POWER POINT 4. CONVERTER MOTIVE DIAGRAM~ O'E = 5. CONVERTER MOTIVE DIAGRAM~ 6. CONVERTER...

Bragg, Bobby Joe

1967-01-01T23:59:59.000Z

75

Photon Source Parameters | Stanford Synchrotron Radiation Lightsource  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Photon Source Parameters Photon Source Parameters SSRL Beam Line Map | Beam Lines by Techniques | Beam Lines by Number Beam Energy 3 GeV Injection Energy 3 GeV Current 300-500 mA Fill Pattern 270 bunches distributed in six groups of 45 with 17 bunch gaps in between Circumferenc 234.137 Radio Frequency 476.315 MHz Bunch Spacing 2.1 n Horizontal Emittance 10 nm*rad Vertical Emittance 14 pm*rad Critical Energy 7.6 keV Energy Spread 0.097 Lifetime 12 hours @ 350 mA e- size (x,y) Dipole: 140, 14 µm rms Standard ID: 310, 8 µm rms Chicane ID: 300, 5 µm rms e- divergence (x,y) Dipole: 180, 2.9 µrad rms Standard ID: 33, 1.7 µrad rms Chicane ID: 34, 2.9 µrad rms Bunch Length 20 psec rms (6.0 mm rms) Straight sections for IDs (available ID length) 9 x 2.3 m 4 x 3.7 m 2 x 1.5 m (Chicane)

76

Faster parameter estimation using risk-sensitive lters Sanjeewa Athuraliyay  

E-Print Network [OSTI]

Faster parameter estimation using risk-sensitive lters Sanjeewa Athuraliyay , Jason Fordz and John propose a risk-sensitive approach to parameter estimation for hidden Markov models HMMs. The parameter the improvement in estimation simu- lation studies are presented that compare parameter estimation based on risk-sensitive

Moore, John Barratt

77

Average deployments versus missile and defender parameters  

SciTech Connect (OSTI)

This report evaluates the average number of reentry vehicles (RVs) that could be deployed successfully as a function of missile burn time, RV deployment times, and the number of space-based interceptors (SBIs) in defensive constellations. Leakage estimates of boost-phase kinetic-energy defenses as functions of launch parameters and defensive constellation size agree with integral predictions of near-exact calculations for constellation sizing. The calculations discussed here test more detailed aspects of the interaction. They indicate that SBIs can efficiently remove about 50% of the RVs from a heavy missile attack. The next 30% can removed with two-fold less effectiveness. The next 10% could double constellation sizes. 5 refs., 7 figs.

Canavan, G.H.

1991-03-01T23:59:59.000Z

78

Parameter monitoring compensation system and method  

DOE Patents [OSTI]

A compensation system is described for a computer-controlled machining apparatus having a controller and including a cutting tool and a workpiece holder which are movable relative to one another along a preprogrammed path during a machining operation. It utilizes sensors for gathering information at a preselected stage of a machining operation relating to an actual condition. The controller compares the actual condition to a condition which the program presumes to exist at the preselected stage and alters the program in accordance with detected variations between the actual condition and the assumed condition. Such conditions may be related to process parameters, such as a position, dimension or shape of the cutting tool or workpiece or an environmental temperature associated with the machining operation, and such sensors may be a contact or a non-contact type of sensor or a temperature transducer. 7 figs.

Barkman, W.E.; Babelay, E.F.; DeMint, P.D.; Hebble, T.L.; Igou, R.E.; Williams, R.R.; Klages, E.J.; Rasnick, W.H.

1995-02-07T23:59:59.000Z

79

New approaches to estimation of magnetotelluric parameters  

SciTech Connect (OSTI)

Fully efficient robust data processing procedures were developed and tested for single station and remote reference magnetotelluric (Mr) data. Substantial progress was made on development, testing and comparison of optimal procedures for single station data. A principal finding of this phase of the research was that the simplest robust procedures can be more heavily biased by noise in the (input) magnetic fields, than standard least squares estimates. To deal with this difficulty we developed a robust processing scheme which combined the regression M-estimate with coherence presorting. This hybrid approach greatly improves impedance estimates, particularly in the low signal-to-noise conditions often encountered in the dead band'' (0.1--0.0 hz). The methods, and the results of comparisons of various single station estimators are described in detail. Progress was made on developing methods for estimating static distortion parameters, and for testing hypotheses about the underlying dimensionality of the geological section.

Egbert, G.D.

1991-01-01T23:59:59.000Z

80

Method to Filter ECGs and Evaluate Clinical Parameter Distortion using Realistic ECG Model Parameter Fitting  

E-Print Network [OSTI]

Method to Filter ECGs and Evaluate Clinical Parameter Distortion using Realistic ECG Model Abstract By fitting a previously published nonlinear model for generating realistic ECG to waveforms, the authors demonstrate that significant points (P, Q, R, S, and T) on the ECG can be determined

McSharry, Patrick E.

Note: This page contains sample records for the topic "tox parameter tox" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Subsidiary minimum principles for scattering parameters  

Science Journals Connector (OSTI)

We denote as a "primary minimum principle" one in which a quantity B of physical interest is represented as the minimum value with respect to variations in a trial function ?t of a functional F(?t); F then provides a variational upper bound on B. (The Rayleigh-Ritz principle for the ground-state energy of a system is a familiar example.) If F is quadratic in ?t, the variational property of F enables one to determine the linear parameters relatively easily, but the minimum property is required if the nonlinear parameters are to be determined in a way which allows for systematic improvement of ?t. We show here that for a wide class of problems for which primary minimum principles do not exist, useful and rigorous secondary or "subsidiary minimum principles" are available. That is, we construct a functional F?(?t) whose minimum value is reached for ?t equal to some function ? of dynamical interest. (The Rayleigh-Ritz method provides a subsidiary minimum principle for the approximate determination of the ground-state wave function of a system.) If B=B(?), then a study of F?(?t) provides a powerful tool for the estimation of ? and therefore B, though B(?t) is not normally a variational bound on B(?). Subsidiary minimum principles have recently been obtained for the approximation of the auxiliary functions that appear in the variational principle for the matrix element (?n, W?m), where ?n and ?m are bound-state wave functions and W is an arbitrary operator. Here we extend the method to the estimation of matrix elements of the Green's function g(?) of a bound system with ? below the continuum threshold energy. The response of the system to an external perturbation can be represented by matrix elements of this type. While no new results on the bound-state problem are obtained, our formulation is a convenient starting point for the further extension of the method to continuum problems. The new result obtained here is the derivation of a subsidiary minimum principle for the problem of scattering of a projectile by a target whose bound-state wave function is only imprecisely known. The subsidiary minimum principle allows for systematic improvement of the closed-channel component of the trial scattering wave function that appears in a Kohn-type variational calculation of the scattering amplitude.

Leonard Rosenberg and Larry Spruch

1974-12-01T23:59:59.000Z

82

QGESS: CO2 Impurity Design Parameters  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Q Q U U A A L L I I T T Y Y G G U U I I D D E E L L I I N N E E S S F F O O R R E E N N E E R R G G Y Y S S Y Y S S T T E E M M S S T T U U D D I I E E S S C C O O 2 2 I I m m p p u u r r i i t t y y D D e e s s i i g g n n P P a a r r a a m m e e t t e e r r s s DOE/NETL-2010/???? DOE/NETL-341/011212 August 2013 CO 2 Impurity Design Parameters Quality Guidelines for Energy System Studies Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights.

83

FUNDAMENTAL PARAMETERS AND CHEMICAL COMPOSITION OF ARCTURUS  

SciTech Connect (OSTI)

We derive a self-consistent set of atmospheric parameters and abundances of 17 elements for the red giant star Arcturus: T{sub eff} = 4286 {+-} 30 K, log g = 1.66 {+-} 0.05, and [Fe/H] = -0.52 {+-} 0.04. The effective temperature was determined using model atmosphere fits to the observed spectral energy distribution from the blue to the mid-infrared (0.44 to 10 {mu}m). The surface gravity was calculated using the trigonometric parallax of the star and stellar evolution models. A differential abundance analysis relative to the solar spectrum allowed us to derive iron abundances from equivalent width measurements of 37 Fe I and 9 Fe II lines, unblended in the spectra of both Arcturus and the Sun; the [Fe/H] value adopted is derived from Fe I lines. We also determine the mass, radius, and age of Arcturus: M = 1.08 {+-} 0.06 M{sub Sun }, R = 25.4 {+-} 0.2 R{sub Sun }, and {tau} = 7.1{sup +1.5}{sub -1.2} Gyr. Finally, abundances of the following elements are measured from an equivalent width analysis of atomic features: C, O, Na, Mg, Al, Si, K, Ca, Sc, Ti, V, Cr, Mn, Co, Ni, and Zn. We find the chemical composition of Arcturus typical of that of a local thick-disk star, consistent with its kinematics.

Ramirez, I. [Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101 (United States); Allende Prieto, C., E-mail: ivan@obs.carnegiescience.edu, E-mail: callende@iac.es [Instituto de Astrofisica de Canarias, 38205 La Laguna, Tenerife (Spain)

2011-12-20T23:59:59.000Z

84

Numerical investigations of plasma parameters in the COMPASS tokamak  

Science Journals Connector (OSTI)

A numerical investigation of plasma parameters in a diverter configuration of COMPASS tokamak is presented. The plasma parameters in the ... regimes in the boundary layer of the COMPASS tokamak is discussed.

E. Havlickova; R. Zagorski; R. Panek

2008-09-01T23:59:59.000Z

85

The admissible parameter space for exponential smoothing models  

Science Journals Connector (OSTI)

We discuss the admissible parameter space for some state space models, including the models that underly exponential smoothing methods. We find that the usual parameter restrictions (requiring all smoothing param...

Rob J. Hyndman; Muhammad Akram…

2008-06-01T23:59:59.000Z

86

A two-parameter lifetime distribution with decreasing failure rate  

Science Journals Connector (OSTI)

In this paper, a new two-parameter lifetime distribution with decreasing failure rate is introduced. Various properties of the proposed distribution are discussed. The estimation of the parameters attained by the EM algorithm and their asymptotic variances ...

Rasool Tahmasbi; Sadegh Rezaei

2008-04-01T23:59:59.000Z

87

SOW and Key Performance Parameters (KPP) Handbook Final Version...  

Broader source: Energy.gov (indexed) [DOE]

SOW and Key Performance Parameters (KPP) Handbook Final Version 9-30-2014 SOW and Key Performance Parameters (KPP) Handbook Final Version 9-30-2014 This handbook provides suggested...

88

General Concepts and Global Parameters (EOD, COD, Ox)  

Science Journals Connector (OSTI)

In this work, the parameters Electrochemical Oxidation Index (EOI) and Electrochemical Oxygen Demand (EOD), involved in the electrochemical treatment of...1–6]. From these parameters, both the degree of oxidation...

Christos Comninellis; Agnieszka Kapa?ka…

2014-09-01T23:59:59.000Z

89

Learning Optimal Parameters in Decision-Theoretic Rough Sets  

E-Print Network [OSTI]

Learning Optimal Parameters in Decision-Theoretic Rough Sets Joseph P. Herbert JingTao Yao]@cs.uregina.ca Abstract. A game-theoretic approach for learning optimal parameter values for probabilistic rough set. The decision-theoretic rough set model acquires initial values for these parameters through a combination

Yao, JingTao

90

Identification of kinematic parameters using several models with experimental verification  

E-Print Network [OSTI]

IVIachine 3. 1. 2 Reference Fixture 3. 1. 3 End-Effector 3. 1. 4 Interface Software 3. 2 Data. Collection Procedure 37 40 40 42 43 TABLE OF CONTENTS (Continued) CHAPTFR IV EXPERIMENTAL RESULTS FAG F. 4. 1 Computer Simulation 4. 2 Index... For The 30 Parameter lvtodel. . . . 36 4. 1 The Computer Simula, tion Result (Orientation Parameter) 4. 2 I'he Computer Simulation Result (Translation Parameter) 4. 3 The Set Of Calibrated Parameters For Model 1 4. 4 The Set Of Calibrated Parameters...

Rho, Jae Jeung

2012-06-07T23:59:59.000Z

91

Parameter extraction from I-V characteristics of PV devices  

SciTech Connect (OSTI)

Device parameters such as series and shunt resistances, saturation current and diode ideality factor influence the behaviour of the current-voltage (I-V) characteristics of solar cells and photovoltaic modules. It is necessary to determine these parameters since performance parameters are derived from the I-V curve and information provided by the device parameters are useful in analyzing performance losses. This contribution presents device parameters of CuIn(Se,S){sub 2}- and Cu(In,Ga)(Se,S){sub 2}-based solar cells, as well as, CuInSe{sub 2}, mono- and multicrystalline silicon modules determined using a parameter extraction routine that employs Particle Swarm Optimization. The device parameters of the CuIn(Se,S){sub 2}- and Cu(In,Ga)(Se,S){sub 2}-based solar cells show that the contribution of recombination mechanisms exhibited by high saturation current when coupled with the effects of parasitic resistances result in lower maximum power and conversion efficiency. Device parameters of photovoltaic modules extracted from I-V characteristics obtained at higher temperature show increased saturation current. The extracted values also reflect the adverse effect of temperature on parasitic resistances. The parameters extracted from I-V curves offer an understanding of the different mechanisms involved in the operation of the devices. The parameter extraction routine utilized in this study is a useful tool in determining the device parameters which reveal the mechanisms affecting device performance. (author)

Macabebe, Erees Queen B. [Department of Electronics, Computer and Communications Engineering, Ateneo de Manila University, Loyola Heights, Quezon City 1108 (Philippines); Department of Physics and Centre for Energy Research, Nelson Mandela Metropolitan University, PO Box 77000, Port Elizabeth 6031 (South Africa); Sheppard, Charles J. [Department of Physics, University of Johannesburg, PO Box 524, Auckland Park 2006 (South Africa); Dyk, E. Ernest van [Department of Physics and Centre for Energy Research, Nelson Mandela Metropolitan University, PO Box 77000, Port Elizabeth 6031 (South Africa)

2011-01-15T23:59:59.000Z

92

Reconstructing Dark Energy : A Comparison of Cosmological Parameters  

E-Print Network [OSTI]

A large number of cosmological parameters have been suggested for obtaining information on the nature of dark energy. In this work, we study the efficacy of these different parameters in discriminating theoretical models of dark energy, using both currently available supernova (SNe) data, and simulations of future observations. We find that the current data does not put strong constraints on the nature of dark energy, irrespective of the cosmological parameter used. For future data, we find that the although deceleration parameter can accurately reconstruct some dark energy models, it is unable to discriminate between different models of dark energy, therefore limiting its usefulness. Physical parameters such as the equation of state of dark energy, or the dark energy density do a good job of both reconstruction and discrimination if the matter density is known to high accuracy. However, uncertainty in matter density reduces the efficacy of these parameters. A recently proposed parameter, Om(z), constructed f...

Pan, Alexander V

2010-01-01T23:59:59.000Z

93

Identifying Suitable Degradation Parameters for Individual-Based Prognostics  

SciTech Connect (OSTI)

The ultimate goal of most prognostic systems is accurate prediction of the remaining useful life of individual systems or components based on their use and performance. Traditionally, individual-based prognostic methods use a measure of degradation to make lifetime estimates. Degradation measures may include sensed measurements, such as temperature or vibration level, or inferred measurements, such as model residuals or physics-based model predictions. Often, it is beneficial to combine several measures of degradation into a single parameter. Parameter features such as trendability, monotonicity, and prognosability can be used to compare candidate prognostic parameters to determine which is most useful for individual-based prognosis. By quantifying these features for a given parameter, the metrics can be used with any traditional optimization technique to identify an appropriate parameter. This parameter may be used with a parametric extrapolation model to make prognostic estimates for an individual unit. The proposed methods are illustrated with an application to simulated turbofan engine data.

Coble, Jamie B.; Hines, Wes

2012-09-30T23:59:59.000Z

94

Algorithmic Parameter Space Reduction of a Systems Biology Model: A Case Study  

E-Print Network [OSTI]

DSM) Sensitivity Matrix (DSM) Most parameter reduction approachesa discretized sensitivity matrix (DSM). The term “parameter

Sin, Celine

2012-01-01T23:59:59.000Z

95

PARAMETER OPTIMIZATIONS FOR VACUUM LASER ACCELERATION AT ATF...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

PARAMETER OPTIMIZATIONS FOR VACUUM LASER ACCELERATION AT ATFBNL * V. Yakimenko , M. Babzien, I. Ben-Zvi, K. Kusche, I. Pogorelsky, X. Wang Brookhaven National Laboratory ,...

96

Validation of CO2 line parameters used in temperature retrievals  

Science Journals Connector (OSTI)

A simultaneous retrieval procedure is utilized to investigate CO2 spectroscopic line parameters in order to reduce systematic errors in temperature retrievals. Provided are initial...

Shephard, Mark W; Clough, Shepard A; Delamere, Jennifer; Tobin, David C; Turner, David D; Revercomb, Hank E; Knuteson, Robert; Beer, Reinhard

97

The Landau-Migdal parameters from the Brueckner theory  

Science Journals Connector (OSTI)

The zero-order Landau-Migdal parameters are discussed in the framework of the Brueckner-Hartree-Fock approximation with realistic two- and...

D. Gambacurta; U. Lombardo; W. Zuo

2011-10-01T23:59:59.000Z

98

Parameter Identification with Adaptive Sparse Grid-based ...  

E-Print Network [OSTI]

Identifying parameter values in mathematical models of cellular processes is crucial to ascertain if ... participating chemical species, the uncertainty and complexity of the interconnected signaling ..... Software Simulation software (

Greg Buzzard

2009-08-12T23:59:59.000Z

99

Modeling and online parameter identification methods for Electrohydraulic Valvetrain Systems  

E-Print Network [OSTI]

bulk modulus which is dependent on pressure and temperature [29], which vary during operation we create an on-line parameter identification

Gray, James

2009-01-01T23:59:59.000Z

100

Evaluation of testing and reservoir parameters in geothermal...  

Open Energy Info (EERE)

testing and reservoir parameters in geothermal wells at Raft River and Boise, Idaho Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Proceedings:...

Note: This page contains sample records for the topic "tox parameter tox" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Plasma parameters in electrospark deposition of silver coatings  

Science Journals Connector (OSTI)

Spectroscopic measurements and mathematical simulations are conducted to study the composition and parameters of spark discharge in depositing coatings with silver electrodes using an Élitron-22 generator. The...

V. D. Kurochkin; L. P. Kravchenko; L. O. Kryachko…

2008-11-01T23:59:59.000Z

102

Remote monitoring and diagnosis for control of EDM parameters .  

E-Print Network [OSTI]

??This thesis presents the concept of remote (Internet) data acquisition and processing for control of EDM parameters. It incorporates aspects of data analysis while performing… (more)

Cilliers, Charl

2008-01-01T23:59:59.000Z

103

Constraining gravitational and cosmological parameters with astrophysical data  

E-Print Network [OSTI]

We use astrophysical data to shed light on fundamental physics by constraining parametrized theoretical cosmological and gravitational models. Gravitational parameters are those constants that parametrize possible departures ...

Mao, Yi, Ph. D. Massachusetts Institute of Technology

2008-01-01T23:59:59.000Z

104

Accelerated maximum likelihood parameter estimation for stochastic biochemical systems  

E-Print Network [OSTI]

as: Daigle et al. : Accelerated maximum likelihood parame-Gillespie DT: Approximate accelerated stochastic simulationARTICLE Open Access Accelerated maximum likelihood parameter

Daigle, Bernie J; Roh, Min K; Petzold, Linda R; Niemi, Jarad

2012-01-01T23:59:59.000Z

105

Extraction of Equilibrium Energy and Kinetic Parameters from...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Investigator for the Extraction of Equilibrium Energy and Kinetic Parameters from Single Molecule Force Spectroscopy Data. LLNL BES Programs Highlight Extraction of...

106

Verification Method for SSI Problems with Extended Parameter Ranges  

Broader source: Energy.gov [DOE]

Verification Method for SSI Problems with Extended Parameter Ranges 2014 U.S. DOE Natural Phenomena Hazards Meeting Carl J. Costantino and Associates www.cjcassoc.com

107

Impact of ozonation and biological treatment on disinfection by-products  

SciTech Connect (OSTI)

The paper summarizes several recent studies on the impact of ozonation and biological treatment on DBP formation. Ozonation was characterized by the formation of ozonation DBPs such as aldehydes, assimilable organic carbon (AOC), biodegradable dissolved organic carbon (BDOC) and the oxidation of bromide to bromate. The oxidation of the DBP precursor compounds and the effectiveness of biotreatent for the control of DBPs were monitored by the formation potential (FP) for total organic halogen (TOX), total THMs (TTHMs) and total measured haloacetic acid (THAAs). Special attention was also given to the impact of bromide concentration on the speciation of the DBPs. A specific objective of the paper was to compare DBP control by batch biological treatment at the bench-scale to that by a continuous flow sand filter at the pilot-scale.

Shukairy, H.M.; Summers, R.S.; Miltner, R.J.

1994-01-01T23:59:59.000Z

108

Comparative Evaluation of Chemical and Environmental Online and CD-ROM Databases  

Science Journals Connector (OSTI)

This paper presents a comparative evaluation of datasources of online databases and databases on CD-ROM (called CD-ROMs in this paper) in the field of environmental chemicals. ... Analyzing the five object sets for CD-ROMs (ICD?5CD), the situation is as follows:? The CD-ROM versions of large online databases, e.g., BIOSIS (BIOSIS Previews CD-ROM), RTECS (Registry of Toxic Effects of Chemical Substances), and TOX (Toxicology Literature Online CD-ROM), are maximum objects in our Hasse diagrams. ... Striking is the fact that the German CD-ROMs like GEF (Gefahrgut CD-ROM), GIF (Giftliste, krebserregende, gesundheitsschädliche und reizende Stoffe), and SIG (Siemens Gefahrstoff-Datenbank CD-ROM) are in low ranking positions. ...

Kristina Voigt; Johann Gasteiger; Rainer Brüggemann

1999-11-23T23:59:59.000Z

109

Quapaw Vocabulary  

E-Print Network [OSTI]

, dislzine (q.v • ) blanket~itt~,Il'Qitta blood wapW-t blue troho, tto board zQbdaska boat~tte bobcatit~deze bogeyman wappQka (q. v • ) bone wahl bow m%tte box (paper) oPPl hihikka (CS). boy sette bread waske bed aZQ breast , ~ze bee hezikka, hezika (?) beef... tteska (q.v.) beer tteska tezeIl.i breechclothittikn~ brotheris~ brown, dark sape, -sa belly , . OZlZl brown iZl (CS). cf. sape beltippidat~ bigt~,ttQka big was?ake bite daxt:.a, yaxte (?) bitter ppahi bucket initaki buffalo (bull) tOka, tOxe (q.v...

Rankin, Robert L.

1982-01-01T23:59:59.000Z

110

Estimation of Parameters in Carbon Sequestration Models from Net Ecosystem  

E-Print Network [OSTI]

Estimation of Parameters in Carbon Sequestration Models from Net Ecosystem Exchange Data Luther in the context of a deterministic com- partmental carbon sequestration system. Sensitivity and approximation usefulness in the estimation of parameters within a compartmental carbon sequestration model. Previously we

White, Luther

111

Evaluating Parameter Sweep Workflows in High Performance Computing*  

E-Print Network [OSTI]

Evaluating Parameter Sweep Workflows in High Performance Computing* Fernando Chirigati1,# , Vítor a large amount of tasks that are submitted to High Performance Computing (HPC) environments. Different, Parameter Sweep, High Performance Computing (HPC) 1. INTRODUCTION1 # Many scientific experiments are based

Paris-Sud XI, Université de

112

ATP AND DNA AS MICROBIAL PARAMETERS IN THE ALIMENTARY TRACT  

E-Print Network [OSTI]

ATP AND DNA AS MICROBIAL PARAMETERS IN THE ALIMENTARY TRACT J. WOLSTRUP K. JENSEN A. JUST I. The aim of the present work was to investi- gate the use of ATP and DNA as parameters for microbial activity and biomass in the ali- mentary tract of cows and pigs. ATP was selected because of the promising

Paris-Sud XI, Université de

113

LINEAR LATTICE BOLTZMANN SCHEMES FOR PARAMETERS CHOICES AND ISOTROPY PROPERTIES  

E-Print Network [OSTI]

LINEAR LATTICE BOLTZMANN SCHEMES FOR ACOUSTIC: PARAMETERS CHOICES AND ISOTROPY PROPERTIES ADELINE parameters choi- ces for linear lattice Boltzmann schemes according to the definition of the isotropic order2Q9 scheme. Introduction Lattice Boltzmann schemes [7, 11, 8] are numerically very interesting be

Paris-Sud XI, Université de

114

Standard errors of parameter estimates in the ETAS model  

E-Print Network [OSTI]

1 Standard errors of parameter estimates in the ETAS model Abstract Point process models of seismic catalogs and in short- term earthquake forecasting. The standard errors of parameter estimates of conventional standard error estimates based on the Hessian matrix of the log- likelihood function of the ETAS

Schoenberg, Frederic Paik (Rick)

115

Parameter Estimation for Automatic Dose Control in Radioscopy  

E-Print Network [OSTI]

Parameter Estimation for Automatic Dose Control in Radioscopy Daniel Keysers, Sami Celik, Henning of the X-ray dose on this parameter alone leads to incorrect exposure, if direct radiation enters-ray dose needs to be adjusted continuously to the body region examined. In cur- rent systems

Keysers, Daniel

116

Wave momentum flux parameter: a descriptor for nearshore waves  

E-Print Network [OSTI]

Wave momentum flux parameter: a descriptor for nearshore waves Steven A. Hughes* US Army Engineer Available online 7 October 2004 Abstract A new parameter representing the maximum depth-integrated wave momentum flux occurring over a wave length is proposed for characterizing the wave contribution

US Army Corps of Engineers

117

Using Graphical Representations to Support the Calculation of Infusion Parameters  

E-Print Network [OSTI]

Using Graphical Representations to Support the Calculation of Infusion Parameters Sandy J. J. Gould in which participants were asked to solve a num- ber of infusion parameter problems that were represented representations transfer to actual workplace settings. Keywords: Graphical reasoning, infusion pumps, re

Subramanian, Sriram

118

Parameter estimation for knowledge and diagnosis of electrical machines  

E-Print Network [OSTI]

Chapitre 1 Parameter estimation for knowledge and diagnosis of electrical machines Jean in "Control Methods for Electrical Machines, ISTE Ltd and John Wiley & Sons Inc (Ed.) (2009) 207-243" DOI : 10.1002/9780470611760 #12;Chapter 1 Parameter estimation for knowledge and diagnosis of electrical machines 1

Boyer, Edmond

119

Stark parameter measurement of Ar II UV spectral lines  

Science Journals Connector (OSTI)

......parameter measurement of Ar-ii UV spectral lines S. Djurovic 1 M. T. Belmonte 2 R. J...of Stark parameters of Ar-ii spectral lines. We report 126 half-width and 111 shift...16-000 to 26-000-K. atomic data|line: profiles|plasmas| 1 INTRODUCTION Stark......

S. Djurovic; M. T. Belmonte; R. J. Peláez; J. A. Aparicio; S. Mar

2013-01-01T23:59:59.000Z

120

ARM - Evaluation Product - Radiatively Important Parameters Best Estimate  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ProductsRadiatively Important Parameters Best ProductsRadiatively Important Parameters Best Estimate (RIPBE) Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Evaluation Product : Radiatively Important Parameters Best Estimate (RIPBE) 2002.03.01 - 2007.06.30 Site(s) SGP General Description The Radiatively Important Parameters Best Estimate (RIPBE) VAP combines multiple input datastreams, each with their own temporal and vertical resolution, to create a complete set of radiatively important parameters on a uniform vertical and temporal grid with quality control and source information for use as input to a radiative transfer model. One of the main drivers for RIPBE was to create input files for the BroadBand Heating Rate Profiles (BBHRP) VAP, but we also envision use of RIPBE files for user-run

Note: This page contains sample records for the topic "tox parameter tox" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Public Health Benefits of End-Use Electrical Energy Efficiency in California: An Exploratory Study  

SciTech Connect (OSTI)

This study assesses for California how increasing end-use electrical energy efficiency from installing residential insulation impacts exposures and disease burden from power-plant pollutant emissions. Installation of fiberglass attic insulation in the nearly 3 million electricity-heated homes throughout California is used as a case study. The pollutants nitrous oxides (NO{sub x}), sulfur dioxide (SO{sub 2}), fine particulate matter (PM2.5), benzo(a)pyrene, benzene, and naphthalene are selected for the assessment. Exposure is characterized separately for rural and urban environments using the CalTOX model, which is a key input to the US Environmental Protection Agency (EPA) Tool for the Reduction and Assessment of Chemicals and other environmental Impacts (TRACI). The output of CalTOX provides for urban and rural populations emissions-to-intake factors, which are expressed as an individual intake fraction (iFi). The typical iFi from power plant emissions are on the order of 10{sup -13} (g intake per g emitted) in urban and rural regions. The cumulative (rural and urban) product of emissions, population, and iFi is combined with toxic effects factors to determine human damage factors (HDFs). HDF are expressed as disability adjusted life years (DALYs) per kilogram pollutant emitted. The HDF approach is applied to the insulation case study. Upgrading existing residential insulation to US Department of Energy (DOE) recommended levels eliminates over the assmned 50-year lifetime of the insulation an estimated 1000 DALYs from power-plant emissions per million tonne (Mt) of insulation installed, mostly from the elimination of PM2.5 emissions. In comparison, the estimated burden from the manufacture of this insulation in DALYs per Mt is roughly four orders of magnitude lower than that avoided.

McKone, Thomas E.; Lobscheid, A.B.

2006-06-01T23:59:59.000Z

122

Evaluation of terrestrial microcosms for assessing the fate and effects of genetically engineered microorganisms on ecological processes  

SciTech Connect (OSTI)

This project evaluates and modifies the existing US Environmental Protection Agency's Office of Pesticides and Toxic Substances (EPA/OPTS) terrestrial microcosm test system and test protocols such that they can be used to determine the environmental fate and ecological hazards of genetically engineered microorganisms (GEMs). The intact soil-core microcosm represents terrestrial ecosystems, and when coupled with appropriate test protocols, such microcosms may be appropriate to define and limit risks associated with the intentional release of GEMs. The terrestrial microcosm test system was used to investigate the survival and transport of two model GEMs (Azospirillum lipoferum and Pseudomonas sp. Tn5 mutants) to various trophic levels and niches and through intact soil cores. Subsequent effects on nutrient cycling and displacement of indigenous microorganisms were evaluated. The model organisms were a diazotrophic root-colonizing bacterium (A. lipoferum) and a wheat root growth-inhibiting rhizobacterium (Pseudomonas sp.). The transposable element Tn5 was used as a genetic marker for both microorganisms in two separate experiments. The organisms were subjected to transposon mutagenesis using a broad host-range-mobilizable suicide plasmid. The transposon Tn5 conferred levels of kanamycin resistance up to 500 ..mu..g/ml (Pseudomonas sp.), which allowed for selection of the bacteria from environmental samples. The presence of Tn5 DNA in the genome of the model GEMs also allowed the use of Tn5 gene probes to confirm and enumerate the microorganisms in different samples from the microcosms. Two types of root growth-inhibiting Pseudomonas sp. Tn5 mutants were obtained and used in microcosm studies: those that lacked the ability to inhibit either wheat root growth or the growth of other microorganisms in vitro (tox/sup /minus//) and those which retained these properties (tox/sup +/). 53 refs., 7 figs., 6 tabs.

Fredrickson, J.K.; Bentjen, S.A.; Bolton, H. Jr.; Li, S.W.; Ligotke, M.W.; McFadden, K.M.; Van Voris, P.

1989-04-01T23:59:59.000Z

123

Parameter Scan of an Effective Group Difference Pseudopotential Using Grid Computing 1 Parameter Scan of an Effective Group Difference  

E-Print Network [OSTI]

Parameter Scan of an Effective Group Difference Pseudopotential Using Grid Computing 1 Parameter Scan of an Effective Group Difference Pseudopotential Using Grid Computing Wibke SUDHOLT and Kim K of the actual biology/biochemistry. The ability to invoke modern grid technologies offers the ability to create

Abramson, David

124

The Cosmic Quartet - Cosmological Parameters of a Smoothed Inhomogeneous Spacetime  

E-Print Network [OSTI]

We discuss the relation between `bare' cosmological parameters as the true spatial average characteristics that determine the cosmological model, and the parameters interpreted by observers with a `Friedmannian bias', i.e., within a homogeneous space geometry. We may say that the latter are `dressed' by the smoothed-out geometrical inhomogeneities of the surveyed spatial region. We identify two effects that quantify the difference between `bare' and `dressed' parameters: `curvature backreaction' and `volume effect'. An estimate of the latter is given in terms of a simple geometrical example.

Thomas Buchert; Mauro Carfora

2003-12-25T23:59:59.000Z

125

Parameters and variables appearing in repository-siting models  

SciTech Connect (OSTI)

Included in this report is a summary of data characterizing the parameters and variables appearing in repository siting models. These data cover the processes of saturates flow, unsaturated flow, surface water flow, geochemistry, heat transport, solute transport, and geomechanical response. Definitions and ranges of values are provided for equation parameters, source terms, dependent variables, boundary conditions, and initial conditions for the equations that are solved in the repository siting models. The data were compiled to help guide the selection of values of parameters and variables to be used in benchmark problems.

Mercer, J.W.; Thomas, S.D.; Ross, B.

1982-12-01T23:59:59.000Z

126

Parameter Study on Prediction Methods for TBM Penetration Rate  

Science Journals Connector (OSTI)

Penetration rate prediction of Tunnel Boring Machine (TBM) ... research, influence of effective parameters on TBM penetration rate is investigated by sensitivity analysis of three...TBM.... Based on these analyse...

Mahdi Zoorabadi; Serkan Saydam…

2013-04-01T23:59:59.000Z

127

A Parameter for Forecasting Tornadoes Associated with Landfalling Tropical Cyclones  

Science Journals Connector (OSTI)

The authors develop a statistical guidance product, the tropical cyclone tornado parameter (TCTP), for forecasting the probability of one or more tornadoes during a 6-h period that are associated with landfalling tropical cyclones affecting the ...

Matthew J. Onderlinde; Henry E. Fuelberg

2014-10-01T23:59:59.000Z

128

Effect of quenching on the kaon B parameter  

Science Journals Connector (OSTI)

We compute the kaon B parameter on an ensemble of lattices which include the effects of dynamical quark loops. Comparing with our previous quenched calculations, we find that dynamical fermions have negligible effect.

Gregory Kilcup

1993-09-13T23:59:59.000Z

129

Impacts of Some Building Design Parameters on Heat Pump Applications  

E-Print Network [OSTI]

. In this study; in order to provide energy conservation and climatic comfort in buildings, an approach which aims to control the energy consumption of heat pumps by controlling decisions related to building design parameters have been developed. For this purpose...

Erdim, B.; Manioglu, G.

2011-01-01T23:59:59.000Z

130

A nondiagrammatic calculation of the Rho parameter from heavy fermions  

E-Print Network [OSTI]

A simple nondiagrammatic evaluation of the nondecoupling effect of heavy fermions on the Veltman's Rho parameter is presented in detail. This calculation is based on the path integral approach, the electroweak chiral Lagrangian formalism, and the Schwinger proper time method.

Hong-Hao Zhang

2009-11-21T23:59:59.000Z

131

Electric Parameters of the D.C. Carbon Arc  

Science Journals Connector (OSTI)

The basic electric parameters of an arc discharge are the current strength (i) and the voltage drop across the gap (V). Both quantities can be measured without difficulty. In general, a relationship between V and...

P. W. J. M. Boumans

1966-01-01T23:59:59.000Z

132

ESTIMATING DETECTION PROBABILITY PARAMETERS FOR PLETHODON SALAMANDERS USING THE ROBUST  

E-Print Network [OSTI]

ESTIMATING DETECTION PROBABILITY PARAMETERS FOR PLETHODON SALAMANDERS USING THE ROBUST CAPTURE 7617, Raleigh, NC 27695-7617, USA KENNETH H. POLLOCK, Department of Statistics, Biomathematics monitoring programs. Two sources of variation, spatial variation and variation in detection probability, make

Simons, Theodore R.

133

Density of states and order parameter in dirty anisotropic superconductors  

E-Print Network [OSTI]

We analyze in detail how the scattering by nonmagnetic impurities affects the shape and amplitude of the order parameter (OF) and the density of states in anisotropic superconductors in the framework of BCS theory. Special attention is paid...

Pokrovsky, SV; Pokrovsky, Valery L.

1996-01-01T23:59:59.000Z

134

A Lumped Parameter Model for the Edwards Aquifer  

E-Print Network [OSTI]

A lumped parameter model has been developed to simulate monthly water levels and spring flows in the Edwards Aquifer. It is less complex and easier to use than the existing complex finite difference models for the Edwards Aquifer. The lumped...

Anaya, Roberto; Wanakule, Nisai

135

Testing Distributed Parameter Hypotheses for the Detection of Climate Change  

Science Journals Connector (OSTI)

A general statistical methodology, based on testing alternative distributed parameter hypotheses, is proposed as a method for deciding whether or not anthropogenic influences are causing climate change. This methodology provides a framework for ...

Haroon S. Kheshgi; Benjamin S. White

2001-08-01T23:59:59.000Z

136

Active Estimation of Object Dynamics Parameters with Tactile Sensors   

E-Print Network [OSTI]

The estimation of parameters that affect the dynamics of objects—such as viscosity or internal degrees of freedom—is an important step in autonomous and dexterous robotic manipulation of objects. However, accurate and ...

Saal, Hannes; Ting, Jo-Anne; Vijayakumar, Sethu

2010-01-01T23:59:59.000Z

137

Electromagnetic Inverse Problems Involving Distributions of Dielectric Mechanisms and Parameters  

E-Print Network [OSTI]

Electromagnetic Inverse Problems Involving Distributions of Dielectric Mechanisms and Parameters H University, Raleigh, NC 27695-8205 August 17, 2005 Abstract We consider electromagnetic interrogation, uniform, log-normal, and log-Bi-Gaussian distributions. Keywords: Electromagnetic interrogation

138

Principal physicochemical parameters of natural mineral-forming fluids  

Science Journals Connector (OSTI)

The authors’ database (which includes data from more than 17500 publications on fluid and melt inclusions in minerals) was used to generalize information on the principal physicochemical parameters of natural ...

V. B. Naumov; V. A. Dorofeeva; O. F. Mironova

2009-08-01T23:59:59.000Z

139

Constraining Climate Model Parameters from Observed 20th Century Changes  

E-Print Network [OSTI]

We present revised probability density functions for climate model parameters (effective climate sensitivity, the rate of deep-ocean heat uptake, and the strength of the net aerosol forcing) that are based on climate change ...

Forest, Chris Eliot

140

Universal software packages to model the distributed-parameter systems  

Science Journals Connector (OSTI)

Consideration was given to the universal software packages for modeling objects and distributed-parameter systems obeying the partial differential equations. The packages may serve as important tools for industrial automation because the majority of ... Keywords: 07.05.Tp

E. E. Dudnikov

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tox parameter tox" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Multi-parameter control for centrifugal compressor performance optimization  

E-Print Network [OSTI]

The potential performance benefit of actuating inlet guide vane (IGV) angle, variable diffuser vane (VDV) angle and impeller speed to implement a multi-parameter control on a centrifugal compressor system is assessed. The ...

Mannai, Sébastien (Sébastien Karim)

2014-01-01T23:59:59.000Z

142

Topics on Regularization of Parameters in Multivariate Linear Regression  

E-Print Network [OSTI]

are selected. Estimating the degrees of freedom when penalizing the entries of the matrices presents new computational challenges. A simulation study and real data analysis demonstrate that the MRCEII, which selects the tuning parameter of the precision matrix...

Chen, Lianfu

2012-02-14T23:59:59.000Z

143

Application of parameter analysis principles in design: an experimental study  

E-Print Network [OSTI]

APPLICATION OF PARAMETER ANALYSIS PRINCIPLES IN DESIGN: AN EXPERIMENTAL STUDY A Thesis by VINAI ROJANAVANICH Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE August 1991 Major Subject: Mechanical Engineering APPLICATION OF PARAMETER ANALYSIS PRINCIPLES IN DESIGN: AN EXPERIMENTAL STUDY A Thesis by VINAI ROJANAVANICH Approved as to style and content by: David G. sson (Chair...

Rojanavanich, Vinai

1991-01-01T23:59:59.000Z

144

Kinetic parameter estimation using nonisothermal trickle-bed reactor data  

E-Print Network [OSTI]

KINETIC PARAMETER ESTIMATION USING NONISOTHERMAL TRICKLE-BED REACTOR DATA A Thesis by MICHAEL ALLEN MENSIK Submitted to the Graduate College of Texas ALM University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE May 1985 Major Subject: Chemical Engineering KINETIC PARAMETER ESTIMATION USING NONISOTHERMAL TRICKLE-BED REACTOR DATA A Thesis by MICHAEL ALLEN MENSIK Approved as to style and content by: A. ger n (Chairman of Comm ee) R. G. Antho...

Mensik, Michael Allen

2012-06-07T23:59:59.000Z

145

Cosmological-Parameter Determination with Microwave Background Maps  

E-Print Network [OSTI]

The angular power spectrum of the cosmic microwave background (CMB) contains information on virtually all cosmological parameters of interest, including the geometry of the Universe ($\\Omega$), the baryon density, the Hubble constant ($h$), the cosmological constant ($\\Lambda$), the number of light neutrinos, the ionization history, and the amplitudes and spectral indices of the primordial scalar and tensor perturbation spectra. We review the imprint of each parameter on the CMB. Assuming only that the primordial perturbations were adiabatic, we use a covariance-matrix approach to estimate the precision with which these parameters can be determined by a CMB temperature map as a function of the fraction of sky mapped, the level of pixel noise, and the angular resolution. For example, with no prior information about any of the cosmological parameters, a full-sky CMB map with $0.5^\\circ$ angular resolution and a noise level of 15 $\\mu$K per pixel can determine $\\Omega$, $h$, and $\\Lambda$ with standard errors of $\\pm0.1$ or better, and provide determinations of other parameters which are inaccessible with traditional observations. Smaller beam sizes or prior information on some of the other parameters from other observations improves the sensitivity. The dependence on the the underlying cosmological model is discussed.

Gerard Jungman; Marc Kamionkowski; Arthur Kosowsky; David N. Spergel

1996-05-23T23:59:59.000Z

146

PC-SAFT parameters from ab initio calculations  

Science Journals Connector (OSTI)

Abstract We use highly accurate ab initio calculations of binding enthalpies and entropies of gas phase clusters of alcohols to demonstrate how they can be used to obtain association parameters for PC-SAFT. The thermochemical results demonstrate that cooperativity effects and state dependent cluster distributions cause a strongly varying average enthalpy and entropy per bond as function of temperature and density for alcohols. In contrast to this, the two association parameters of PC-SAFT lead to density independent bond enthalpy and entropy and are thus effective parameters. Therefore, we choose to compute the cluster distribution at a universal state point and show that the thus obtained association parameters can be used to reduce the number of adjustable parameters from 5 to 3 with only a marginal loss of accuracy for most of the studied systems, and even an estimation of thermodynamic properties without adjusted parameters is possible. The ab initio calculations suggest that the 2B association scheme is more appropriate for 1-alkanols than the 3B one.

Muhammad Umer; Katja Albers; Gabriele Sadowski; Kai Leonhard

2014-01-01T23:59:59.000Z

147

A Monte Carlo study of the distribution of parameter estimators in a dual exponential decay model  

E-Print Network [OSTI]

inspired me to overcome several problems in preparing this paper. TABLE OF CONTENTS Chapter I. INTRODUCTION II, PROCEDURE Selecting Representative Parameters Generating Sample Curves Obtaining the Parameter Estimates 3 3 4 III, ANALYSIS... Type I Parameter Estimates 3. Set-3 Type I Parameter Estimates 4. Set-3A Type I Parameter Estimates 5. Summary of Chi-square Goodness of Fit Test 6. Set-1 Type II Parameter Estimates 7. Set-2 Type II Parameter Estimates 8. Set-3 Type II Parameter...

Garcia, Raul

1969-01-01T23:59:59.000Z

148

Environmental Transport Input Parameters for the Biosphere Model  

SciTech Connect (OSTI)

This analysis report is one of the technical reports documenting the Environmental Radiation Model for Yucca Mountain Nevada (ERMYN), a biosphere model supporting the total system performance assessment (TSPA) for the geologic repository at Yucca Mountain. A graphical representation of the documentation hierarchy for the ERMYN is presented in Figure 1-1. This figure shows relationships among the reports developed for biosphere modeling and biosphere abstraction products for the TSPA, as identified in the ''Technical Work Plan: for Biosphere Modeling and Expert Support'' (TWP) (BSC 2003 [163602]). Some documents in Figure 1-1 may be under development and not available when this report is issued. This figure provides an understanding of how this report contributes to biosphere modeling in support of the license application (LA), but access to the listed documents is not required to understand the contents of this report. This report is one of the reports that develops input parameter values for the biosphere model. The ''Biosphere Model Report'' (BSC 2003 [160699]) describes the conceptual model, the mathematical model, and the input parameters. The purpose of this analysis is to develop biosphere model parameter values related to radionuclide transport and accumulation in the environment. These parameters support calculations of radionuclide concentrations in the environmental media (e.g., soil, crops, animal products, and air) resulting from a given radionuclide concentration at the source of contamination (i.e., either in groundwater or volcanic ash). The analysis was performed in accordance with the TWP (BSC 2003 [163602]). This analysis develops values of parameters associated with many features, events, and processes (FEPs) applicable to the reference biosphere (DTN: M00303SEPFEPS2.000 [162452]), which are addressed in the biosphere model (BSC 2003 [160699]). The treatment of these FEPs is described in BSC (2003 [160699], Section 6.2). Parameter values developed in this report, and the related FEPs, are listed in Table 1-1. The relationship between the parameters and FEPs was based on a comparison of the parameter definition and the FEP descriptions as presented in BSC (2003 [160699], Section 6.2). The parameter values developed in this report support the biosphere model and are reflected in the TSPA through the biosphere dose conversion factors (BDCFs). Biosphere modeling focuses on radionuclides screened for the TSPA-LA (BSC 2002 [160059]). The same list of radionuclides is used in this analysis (Section 6.1.4). The analysis considers two human exposure scenarios (groundwater and volcanic ash) and climate change (Section 6.1.5). This analysis combines and revises two previous reports, ''Transfer Coefficient Analysis'' (CRWMS M&O 2000 [152435]) and ''Environmental Transport Parameter Analysis'' (CRWMS M&O 2001 [152434]), because the new ERMYN biosphere model requires a redefined set of input parameters. The scope of this analysis includes providing a technical basis for the selection of radionuclide- and element-specific biosphere parameters (except for Kd) that are important for calculating BDCFs based on the available radionuclide inventory abstraction data. The environmental transport parameter values were developed specifically for use in the biosphere model and may not be appropriate for other applications.

M. A. Wasiolek

2003-06-27T23:59:59.000Z

149

The Impact of Uncertain Physical Parameters on HVAC Demand Response  

SciTech Connect (OSTI)

HVAC units are currently one of the major resources providing demand response (DR) in residential buildings. Models of HVAC with DR function can improve understanding of its impact on power system operations and facilitate the deployment of DR technologies. This paper investigates the importance of various physical parameters and their distributions to the HVAC response to DR signals, which is a key step to the construction of HVAC models for a population of units with insufficient data. These parameters include the size of floors, insulation efficiency, the amount of solid mass in the house, and efficiency of the HVAC units. These parameters are usually assumed to follow Gaussian or Uniform distributions. We study the effect of uncertainty in the chosen parameter distributions on the aggregate HVAC response to DR signals, during transient phase and in steady state. We use a quasi-Monte Carlo sampling method with linear regression and Prony analysis to evaluate sensitivity of DR output to the uncertainty in the distribution parameters. The significance ranking on the uncertainty sources is given for future guidance in the modeling of HVAC demand response.

Sun, Yannan; Elizondo, Marcelo A.; Lu, Shuai; Fuller, Jason C.

2014-03-01T23:59:59.000Z

150

Status of three-neutrino oscillation parameters, circa 2013  

E-Print Network [OSTI]

The standard three-neutrino (3nu) oscillation framework is being increasingly refined by results coming from different sets of experiments, using neutrinos from solar, atmospheric, accelerator and reactor sources. At present, each of the known oscillation parameters [the two squared mass gaps (delta m^2, Delta m^2) and the three mixing angles (theta_12}, theta_13, theta_23)] is dominantly determined by a single class of experiments. Conversely, the unknown parameters [the mass hierarchy, the theta_23 octant and the CP-violating phase delta] can be currently constrained only through a combined analysis of various (eventually all) classes of experiments. In the light of recent new results coming from reactor and accelerator experiments, and of their interplay with solar and atmospheric data, we update the estimated N-sigma ranges of the known 3nu parameters, and revisit the status of the unknown ones. Concerning the hierarchy, no significant difference emerges between normal and inverted mass ordering. A slight overall preference is found for theta_23 in the first octant and for nonzero CP violation with sin delta < 0; however, for both parameters, such preference exceeds 1 sigma only for normal hierarchy. We also discuss the correlations and stability of the oscillation parameters within different combinations of data sets.

F. Capozzi; G. L. Fogli; E. Lisi; A. Marrone; D. Montanino; A. Palazzo

2014-05-05T23:59:59.000Z

151

LCLS CDR Chapter 5 - FEL Parameters and Performance  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

5 5 FEL Parameters and Performance TECHNICAL SYNOPSIS The FEL parameter optimization and performance characterizations that are described in Chapter 5 are based on three-dimensional theory and computer models. The investigation led to a selection of the best parameters and to a study of the sensitivity to changes in values of accelerator components and beam characteristics and to unavoidable imperfections in the settings of the beam characteristics, magnetic and mechanical components and electron beam monitoring. The focusing of the electron beam plays an important role in the production of the FEL radiation. The LCLS undulator optics has been optimized in terms of its focusing lattice and strength. The electron optics consists of FODO cells; with cell lengths between 7.3 m and 7.5 m.

152

Hydrochemistry of selected parameters at the Raft River KGRA, Cassia  

Open Energy Info (EERE)

Hydrochemistry of selected parameters at the Raft River KGRA, Cassia Hydrochemistry of selected parameters at the Raft River KGRA, Cassia County, Idaho Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Hydrochemistry of selected parameters at the Raft River KGRA, Cassia County, Idaho Details Activities (1) Areas (1) Regions (0) Abstract: Low to moderate temperature (< 150 0C) geothermal fluids are being developed in the southern Raft River Valley of Idaho. Five deep geothermal wells ranging in depth from 4911 feet to 6543 feet (1490 to 1980 meters) and two intermediate depth (3858 feet or 1170 meters) injection wells have been drilled within the Raft River KGRA. Several shallower (1423-500 feet or 430-150 meters) wells have also been constructed to monitor the environmental effects of geothermal development of the

153

Impact parameter dependent colour glass condensate dipole model  

E-Print Network [OSTI]

We show that the colour glass condensate dipole model of Iancu, Itakura and Munier, improved to include the impact parameter dependence, gives a good fit to the total gamma* p cross section measured at HERA if the anomalous dimension at the saturation scale, gamma_s, is treated as a free parameter. We find that the optimum value of gamma_s is close to the value determined from numerical solution of the Balitsky-Kovchegov equation. We compare predictions of the model to data on exclusive diffractive vector meson production and deeply virtual Compton scattering at HERA. The model is found to be deficient for observables sensitive to very small dipole sizes, where an alternative model with explicit DGLAP evolution performs better. We determine the impact parameter dependent saturation scale and comment on the lack of conclusive evidence for perturbative saturation at HERA.

Watt, G

2007-01-01T23:59:59.000Z

154

Solar Model Parameters and Direct Measurements of Solar Neutrino Fluxes  

E-Print Network [OSTI]

We explore a novel possibility of determining the solar model parameters, which serve as input in the calculations of the solar neutrino fluxes, by exploiting the data from direct measurements of the fluxes. More specifically, we use the rather precise value of the $^8B$ neutrino flux, $\\phi_B$ obtained from the global analysis of the solar neutrino and KamLAND data, to derive constraints on each of the solar model parameters on which $\\phi_B$ depends. We also use more precise values of $^7Be$ and $pp$ fluxes as can be obtained from future prospective data and discuss whether such measurements can help in reducing the uncertainties of one or more input parameters of the Standard Solar Model.

Abhijit Bandyopadhyay; Sandhya Choubey; Srubabati Goswami; S. T. Petcov

2006-08-30T23:59:59.000Z

155

Cosmological Parameters From Supernovae Associated With Gamma-ray Bursts  

E-Print Network [OSTI]

We report estimates of the cosmological parameters $\\Omega_m$ and $\\Omega_{\\Lambda}$ obtained using supernovae (SNe) associated with gamma-ray bursts (GRBs) at redshifts up to 0.606. Eight high-fidelity GRB-SNe with well-sampled light curves across the peak are used. We correct their peak magnitudes for a luminosity-decline rate relation to turn them into accurate standard candles with dispersion $\\sigma = 0.18$ mag. We also estimate the peculiar velocity of the host galaxy of SN 1998bw, using constrained cosmological simulations. In a flat universe, the resulting Hubble diagram leads to best-fit cosmological parameters of $(\\Omega_m, \\Omega_{\\Lambda}) = (0.52^{+0.34}_{-0.31},0.48^{+0.31}_{-0.34})$. This exploratory study suggests that GRB-SNe can potentially be used as standardizable candles to high redshifts to measure distances in the universe and constrain cosmological parameters.

Li, Xue; Wojtak, Rados?aw

2014-01-01T23:59:59.000Z

156

Study of parameters affecting enhanced coal bed methane  

SciTech Connect (OSTI)

Laboratory and field scale trials conducted so far indicate that injection of CO{sub 2} and N{sub 2} into deep coalbeds has the potential to enhance coalbed methane (ECBM) recovery while simultaneously sequestering CO{sub 2}. The work has identified that the fundamental processes involved in CO{sub 2} sequestration/CBM recovery in deep coalbeds are not fully understood and further research is needed to advance this technology. ECBM is affected by several parameters; prominent among them are coal characteristics, in-situ conditions prevailing in deep coalbeds, and changes arising from the interaction of coal with various fluids. These parameters do not act independently, thereby making it difficult to isolate their impacts separately. An attempt has been made in this article to classify these parameters and understand their role in ECBM. Past work in this area is reviewed and the future work that is critical for an improved understanding of ECBM recovery is discussed.

Katyal, S.; Valix, M.; Thambimuthu, K. [University of Sydney, Sydney, NSW (Australia). Dept. of Chemical Engineering

2007-02-15T23:59:59.000Z

157

Elastic parameters of a water-based magnetic liquid  

SciTech Connect (OSTI)

The authors repeat studies on the acoustic parameters of water-based magnetic liquids to find a better method of measuring the speed and to cover a wider concentration range. The pulse method is used, as it works well in measuring the speed of sound in ordinary liquids. A figure shows the block diagram. Figures show the dependence of magnetization on field strength and temperature dependence of ultrasound. The speeds measured for the specimens show that the parameter obtained remains constant within the errors of measurement in longitudinal and transverse fields.

Berkovskii, B.M.

1986-07-01T23:59:59.000Z

158

Measurement of parameters in Indus-2 synchrotron radiation source  

SciTech Connect (OSTI)

The paper presents the measurement of optics parameters in Indus-2 synchrotron radiation source, which include betatron tune, beta function, dispersion function, natural chromaticity, corrected chromaticity, central RF frequency, momentum compaction factor, and linear betatron coupling. Two methods were used for beta function measurement; a conventional quadrupole scan method and a method using the fitting of the orbit response matrix. A robust Levenberg-Marquardt algorithm was used for nonlinear least square fitting of the orbit response matrix. In this paper, detailed methods for the parameter measurements are described. The measured results are discussed and compared with the theoretical values obtained using accelerator simulation code Accelerator Toolbox in MATLAB.

Ghodke, A. D.; Husain, Riyasat; Kumar, Pradeep; Yadav, Surendra; Puntambekar, T. A. [Raja Ramanna Centre for Advanced Technology, 452013, Indore (India)

2012-10-15T23:59:59.000Z

159

Optimisation of operating parameters during the accumulator charging process  

Science Journals Connector (OSTI)

The aim of this work involving the charging process of hydro-pneumatic accumulators in the hydrostatic power transmission system is to propose ''optimal'' operating parameters of the control system, which will allow low petrol consumption, low emission of toxic fumes and verification of the proposed model. As a tool for the simulation work, a simulation application from the Simulink library for a Matlab environment was used. As a result of the research, characteristics of the process quantities, which confirm correctness of the proposed operating parameters of the control system were obtained. In addition, the quantitative and qualitative identification of the presented model was conducted.

Zbigniew Pawelski; Sebastian Wittich

2005-01-01T23:59:59.000Z

160

New energy and exergy parameters for geothermal district heating systems  

Science Journals Connector (OSTI)

This paper introduces four new parameters, namely energetic renewability ratio, exergetic renewability ratio, energetic reinjection ratio, and exergetic reinjection ratio for geothermal district energy systems. These parameters are applied to Edremit Geothermal District Heating System (GDHS) in Balikesir, Turkey for daily, monthly and yearly assessments and their variations are studied. In addition, the actual data are regressed to obtain some applied correlations for practical use. Some results follow: (i) Both energetic and exergetic renewability ratios decrease with decreasing temperature in heating season and increasing temperature in the summer. (ii) Both energetic and exergetic reinjection ratios increase with decreasing temperature for heating season and increase with increasing temperature for summer season.

C. Coskun; Zuhal Oktay; I. Dincer

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tox parameter tox" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Parameter network as a means for driving problem solving process  

Science Journals Connector (OSTI)

Driving problem solving process in R&D departments rely on a long historical set of experiences gained through practices, methods acquisition and continuous improvement. This improvement always needs to be enhanced by integrating new paradigms in accordance with global industrial situation. This situation is currently turned towards innovation concerns and among other imposes R&D departments to improve the robustness of their decisions. We propose to demonstrate how R&D choices can be driven by representing problems through a parameter network and extract from this parameter network a set of key contradictions to be solved to drive R&D decisions inventively.

Denis Cavallucci; Thomas Eltzer

2007-01-01T23:59:59.000Z

162

Parameters for landfill-liner leak-rate model  

E-Print Network [OSTI]

PARAMETERS FOR LANDFILL-LINER LEAK-RATE MODEL A Thesis by STEVEN CARLTON BAHRT Submitted to the Graduate College of Texas ASM University i n partial fulfillment of the requirements for the degree of MASTER OF SCIENCE December 1985 Major... Subject: Civil Engineering PARAMETERS FOR LANDFILL-LINER LEAK-RATE MODEL A Thesis by STEVEN CARLTON BAHRT Approved as to style and content by: Rob nt Lytto (Co-Cha' man of C mmittee) ayne Dunl p (Member) Kink W. Brown (Co-Chairman of Committee...

Bahrt, Steven Carlton

2012-06-07T23:59:59.000Z

163

System parameters and measurement instrument parameters are not separately observable: Relational mass is observable while absolute mass is not  

E-Print Network [OSTI]

A brief summary of the objections to the relational nature of inertial mass, gravitational mass and electric charge is presented. The objections are refuted by showing that the measurement process of comparing an instrument reference clock and a reference rod both obeying the laws of physics to a system obeying the same laws of physics results in relational quantities: inertial mass, gravitational mass and electric charge appear only as ratios. This means that scaling of the absolute inertial mass of every object in the universe by the same factor is unobservable (likewise for gravitational mass and electric charge). It is shown that the measurement process does not separate the instrument parameters from the system parameters. Instead a measurement produces functions of fundamental, dimensionless parameters such as the fine structure constant, electron-proton mass ratio and the proton gyro-magnetic factor. It is shown that the measurement of Planck's constant also results in such a function of these dimensio...

Holt, Craig R

2014-01-01T23:59:59.000Z

164

Thermophoresis and its thermal parameters for aerosol collection  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Thermophoresis and its thermal parameters for aerosol collection Thermophoresis and its thermal parameters for aerosol collection Title Thermophoresis and its thermal parameters for aerosol collection Publication Type Journal Article Year of Publication 2007 Authors Huang, Zhuo, Michael G. Apte, and Lara A. Gundel Journal U.S. Department of Energy Journal of Undergraduate Research Volume 7 Pagination 37-42 Abstract The particle collection effi ciency of a prototype environmental tobacco smoke (ETS) sampler based on the use of thermophoresis is determined by optimizing the operational voltage that determines its thermal gradient. This sampler's heating element was made of three sets of thermophoretic (TP) wires 25µm in diameter suspended across a channel cut in a printed circuit board and mounted with collection surfaces on both sides. The separation between the heating element and the room temperature collection surface was determined in a numerical simulation based on the Brock-Talbot model. Other thermal parameters of this TP ETS sampler were predicted by the Brock-Talbot model for TP deposition. From the normalized results the optimal collection ratio was expressed in terms of operational voltage and fi lter mass. Prior to the Brock-Talbot model simulation for this sampler, 1.0V was used arbitrarily. The operational voltage was raised

165

Active Exploration for Robot Parameter Selection in Episodic Reinforcement Learning  

E-Print Network [OSTI]

Active Exploration for Robot Parameter Selection in Episodic Reinforcement Learning Oliver Kroemer-dimensional. Given the inherent exploration-exploitation dilemma of the problem, we propose treating in continuous multi- dimensional spaces. The approach is based on Gaussian process regression, which can

166

Using HYTECH to Synthesize Control Parameters for a Steam Boiler ?;??  

E-Print Network [OSTI]

Using HYTECH to Synthesize Control Parameters for a Steam Boiler ?;?? Thomas A. Henzinger 1 Howard model a steam­boiler control system using hybrid au­ tomata. We provide two abstracted linear models of the nonlinear be­ havior of the boiler. For each model, we define and verify a controller that maintains

Henzinger, Thomas A.

167

Using HYTECH to Synthesize Control Parameters for a Steam Boiler? ??  

E-Print Network [OSTI]

Using HYTECH to Synthesize Control Parameters for a Steam Boiler? ?? Thomas A. Henzinger1 Howard model a steam-boiler control system using hybrid au- tomata. We provide two abstracted linear models of the nonlinear be- havior of the boiler. For each model, we de ne and verify a controller that maintains the safe

Henzinger, Thomas A.

168

Parameter Estimation of the Hybrid Censored Log-Normal Distribution  

E-Print Network [OSTI]

, Pin 560035, India. SQC & OR Unit, Indian Statistical Institute, 203 B.T. Road, Kolkata, Pin 700108, India. Corresponding author, e-mail: bis@isical.ac.in Department of Mathematics and Statistics, Indian of the exponential parameter. Drapper and Guttmann [7] also considered the same problem but from the Bayesian point

Kundu, Debasis

169

Multi-parameter estimating photometric redshifts with artificial neural networks  

E-Print Network [OSTI]

We calculate photometric redshifts from the Sloan Digital Sky Survey Data Release 2 Galaxy Sample using artificial neural networks (ANNs). Different input patterns based on various parameters (e.g. magnitude, color index, flux information) are explored and their performances for redshift prediction are compared. For ANN technique, any parameter may be easily incorporated as input, but our results indicate that using dereddening magnitude produces photometric redshift accuracies often better than the Petrosian magnitude or model magnitude. Similarly, the model magnitude is also superior to Petrosian magnitude. In addition, ANNs also show better performance when the more effective parameters increase in the training set. Finally, the method is tested on a sample of 79, 346 galaxies from the SDSS DR2. When using 19 parameters based on the dereddening magnitude, the rms error in redshift estimation is sigma(z)=0.020184. The ANN is highly competitive tool when compared with traditional template-fitting methods where a large and representative training set is available.

Lili Li; Yanxia Zhang; Yongheng Zhao; Dawei Yang

2006-12-28T23:59:59.000Z

170

Measurement of the Michel parameter rho in muon decay  

E-Print Network [OSTI]

The TWIST Collaboration has measured the Michel parameter rho in normal muon decay,u+ -> e+VeVu. In the standard model of particle physics,rho = 3/4. Deviations from this value require mixing of left- and right-handed muon and electron couplings...

Musser, James Raymond

2006-04-12T23:59:59.000Z

171

Wind parameters extraction from aircraft trajectories C. Hurtera,  

E-Print Network [OSTI]

Wind parameters extraction from aircraft trajectories C. Hurtera, , R. Alligiera,b , D. Gianazzaa traffic controllers need to know the current wind magnitude and direction since they impact every flying vessel. The wind may accel- erate or slow down an aircraft, depending on its relative direction

Paris-Sud XI, Université de

172

HANSEN SOLUBILITY PARAMETERS FOR A CARBON FIBER/EPOXY COMPOSITE  

E-Print Network [OSTI]

HANSEN SOLUBILITY PARAMETERS FOR A CARBON FIBER/EPOXY COMPOSITE Hélène Launay* , Charles Medom demonstrated as appropriate for the study of interactions between the materials in composite carbon fiber. INTRODUCTION Fiber-reinforced composites are used in a wide range of applications where high stiffness

173

Accelerated gravitational-wave parameter estimation with reduced order modeling  

E-Print Network [OSTI]

Inferring the astrophysical parameters of coalescing compact binaries is a key science goal of the upcoming advanced LIGO-Virgo gravitational-wave detector network and, more generally, gravitational-wave astronomy. However, current parameter estimation approaches for such scenarios can lead to computationally intractable problems in practice. Therefore there is a pressing need for new, fast and accurate Bayesian inference techniques. In this letter we demonstrate that a reduced order modeling approach enables rapid parameter estimation studies. By implementing a reduced order quadrature scheme within the LIGO Algorithm Library, we show that Bayesian inference on the 9-dimensional parameter space of non-spinning binary neutron star inspirals can be sped up by a factor of 30 for the early advanced detectors' configurations. This speed-up will increase to about $150$ as the detectors improve their low-frequency limit to 10Hz, reducing to hours analyses which would otherwise take months to complete. Although these results focus on gravitational detectors, the techniques are broadly applicable to any experiment where fast Bayesian analysis is desirable.

Priscilla Canizares; Scott E. Field; Jonathan Gair; Vivien Raymond; Rory Smith; Manuel Tiglio

2014-04-24T23:59:59.000Z

174

Identification of parameters in building concentration dispersion model  

E-Print Network [OSTI]

1 Identification of parameters in building concentration dispersion model D. Calogine*,1 , H. Boyer, 17, 11, 20] use macroscopic models, which represent room or entire building by a single node Abstract The aim of this work is to simulate the pollutants transport in buildings. Focusing mainly

Paris-Sud XI, Université de

175

Effective Parameters in Axial Injection Suspension Plasma Spray Process  

E-Print Network [OSTI]

Effective Parameters in Axial Injection Suspension Plasma Spray Process of Alumina-structured coatings with metastable phases using significantly smaller particles as compared to conventional thermal, an alumina/ 8 wt.% yttria-stabilized zirconia was deposited by axial injection SPS process. The effects

Medraj, Mamoun

176

Simulator Building and Parameter Optimization of an Autonomous Robotic Fish  

E-Print Network [OSTI]

Simulator Building and Parameter Optimization of an Autonomous Robotic Fish Jindong Liu, Huosheng@essex.ac.uk Abstract-- This paper presents a short review on the research of robotic fish. A simulation environment for robotic fish is built and the experiment shows that it is a convenient way to make research on the robotic

Hu, Huosheng

177

Accelerated gravitational-wave parameter estimation with reduced order modeling  

E-Print Network [OSTI]

Inferring the astrophysical parameters of coalescing compact binaries is a key science goal of the upcoming advanced LIGO-Virgo gravitational-wave detector network and, more generally, gravitational-wave astronomy. However, current parameter estimation approaches for such scenarios can lead to computationally intractable problems in practice. Therefore there is a pressing need for new, fast and accurate Bayesian inference techniques. In this letter we demonstrate that a reduced order modeling approach enables rapid parameter estimation studies. By implementing a reduced order quadrature scheme within the LIGO Algorithm Library, we show that Bayesian inference on the 9-dimensional parameter space of non-spinning binary neutron star inspirals can be sped up by a factor of 30 for the early advanced detectors' configurations. This speed-up will increase to about $150$ as the detectors improve their low-frequency limit to 10Hz, reducing to hours analyses which would otherwise take months to complete. Although these results focus on gravitational detectors, the techniques are broadly applicable to any experiment where fast Bayesian analysis is desirable.

Priscilla Canizares; Scott E. Field; Jonathan Gair; Vivien Raymond; Rory Smith; Manuel Tiglio

2015-01-27T23:59:59.000Z

178

Quartic Parameters for Acoustic Applications of Lattice Boltzmann Scheme  

E-Print Network [OSTI]

Quartic Parameters for Acoustic Applications of Lattice Boltzmann Scheme Fran¸cois Dubois ab Abstract. With the Taylor expansion method, we show that it is possible to improve the lattice Boltzmann lattice Boltzmann scheme. Various numerical tests support the coherence of this approach. Keywords: Taylor

179

Impact parameter dependent color glass condensate dipole model  

SciTech Connect (OSTI)

We show that the color glass condensate dipole model of Iancu, Itakura, and Munier, improved to include the impact parameter dependence, gives a good fit to the total {gamma}*p cross section measured at HERA if the anomalous dimension at the saturation scale, {gamma}{sub s}, is treated as a free parameter. We find that the optimum value of {gamma}{sub s}=0.46 is close to the value determined from numerical solution of the Balitsky-Kovchegov equation. The impact parameter dependent saturation scale is generally less than 0.5 GeV{sup 2} in the HERA kinematic regime for the most relevant impact parameters b{approx}2-3 GeV{sup -1}. We compare predictions of the model to data on the longitudinal and heavy flavour structure functions, exclusive diffractive vector meson production, and deeply virtual Compton scattering at HERA. The model is found to be deficient for observables sensitive to moderately small dipole sizes, where an alternative model with explicit Dokshitzer-Gribov-Lipatov-Altarelli-Parisi evolution performs better. The energy dependence of exclusive diffractive processes is shown to provide an important discriminator between different dipole model cross sections.

Watt, G. [Department of Physics and Astronomy, University College London, WC1E 6BT (United Kingdom); Kowalski, H. [Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg (Germany)

2008-07-01T23:59:59.000Z

180

Impact parameter dependent colour glass condensate dipole model  

E-Print Network [OSTI]

We show that the colour glass condensate dipole model of Iancu, Itakura and Munier, improved to include the impact parameter dependence, gives a good fit to the total gamma* p cross section measured at HERA if the anomalous dimension at the saturation scale, gamma_s, is treated as a free parameter. We find that the optimum value of gamma_s = 0.46 is close to the value determined from numerical solution of the Balitsky-Kovchegov equation. The impact parameter dependent saturation scale is generally less than 0.5 GeV^2 in the HERA kinematic regime for the most relevant impact parameters b ~ 2-3 GeV^{-1}. We compare predictions of the model to data on the longitudinal and heavy flavour structure functions, exclusive diffractive vector meson production and deeply virtual Compton scattering at HERA. The model is found to be deficient for observables sensitive to moderately small dipole sizes, where an alternative model with explicit DGLAP evolution performs better. The energy dependence of exclusive diffractive processes is shown to provide an important discriminator between different dipole model cross sections.

G. Watt; H. Kowalski

2007-12-17T23:59:59.000Z

Note: This page contains sample records for the topic "tox parameter tox" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Impact parameter dependent color glass condensate dipole model  

Science Journals Connector (OSTI)

We show that the color glass condensate dipole model of Iancu, Itakura, and Munier, improved to include the impact parameter dependence, gives a good fit to the total ?*p cross section measured at HERA if the anomalous dimension at the saturation scale, ?s, is treated as a free parameter. We find that the optimum value of ?s=0.46 is close to the value determined from numerical solution of the Balitsky-Kovchegov equation. The impact parameter dependent saturation scale is generally less than 0.5??GeV2 in the HERA kinematic regime for the most relevant impact parameters b?2–3??GeV-1. We compare predictions of the model to data on the longitudinal and heavy flavour structure functions, exclusive diffractive vector meson production, and deeply virtual Compton scattering at HERA. The model is found to be deficient for observables sensitive to moderately small dipole sizes, where an alternative model with explicit Dokshitzer-Gribov-Lipatov-Altarelli-Parisi evolution performs better. The energy dependence of exclusive diffractive processes is shown to provide an important discriminator between different dipole model cross sections.

G. Watt and H. Kowalski

2008-07-18T23:59:59.000Z

182

ANISOTROPY OF SOURCE PARAMETERS FROM INDUCED MICROSEISMICITY Peter Starzec1  

E-Print Network [OSTI]

distributions of shear displacement at the source of microearthquakes induced by hydraulic fracturing were relies on the use of hydraulic fracturing to enhance rock mass permeability through the creation). Methods for calculation of the source parameters of seismic events induced by hydraulic fracturing

183

HEART RATE VARIABILITY AS DETERMINISM WITH JUMP STOCHASTIC PARAMETERS  

E-Print Network [OSTI]

HEART RATE VARIABILITY AS DETERMINISM WITH JUMP STOCHASTIC PARAMETERS JIONGXUAN ZHENG, JOE SKUFCA, AND ERIK BOLLT§ Abstract. We use measured heart rate information (RR intervals) to develop a one with persistence which causes the heart rate and rhythm system to wander about a bifurcation point. We propose

Bollt, Erik

184

Automatic selection of tuning parameters in wind power prediction  

E-Print Network [OSTI]

Automatic selection of tuning parameters in wind power prediction Lasse Engbo Christiansen (lec Report number: IMM-Technical Report-2007-12 Project title: Intelligent wind power prediction systems PSO The wind power forecasting system developed at DTU - the Wind Power Prediction Tool (WPPT) - predicts

185

Architecture-driven reliability optimization with uncertain model parameters  

Science Journals Connector (OSTI)

It is currently considered good software engineering practice to decide between design alternatives based on quantitative architecture evaluations for different quality attributes, such as reliability and performance. However, the results of these quantitative ... Keywords: Architecture optimization, Monte-Carlo simulation, Parameter uncertainty, Probabilistic quality prediction, Reliability

Indika Meedeniya; Aldeida Aleti; Lars Grunske

2012-10-01T23:59:59.000Z

186

Large Scale Parameter Sweep Studies Using Distributed Matlab  

E-Print Network [OSTI]

1 Large Scale Parameter Sweep Studies Using Distributed Matlab Vikas Argod Graduate Assistant 225. The implementation is done in Matlab. The discussion extends to large scale problems of similar type using distributed matlab. Use of distributed matlab reduced computation time significantly

Bjørnstad, Ottar Nordal

187

COMPLETE PARAMETER IDENTIFICATION OF A ROBOT FROM PARTIAL POSE INFORMATION  

E-Print Network [OSTI]

for a variety of robot applications such as pick and place, spray painting, and welding. In these operationsCOMPLETE PARAMETER IDENTIFICATION OF A ROBOT FROM PARTIAL POSE INFORMATION Ambarish Goswami Arthur Quaid Michael Peshkin Abstract The absolute accuracy of a robot depends to a large extent

MacIver, Malcolm A.

188

Low-Energy Neutron-Neutron Scattering Parameters  

Science Journals Connector (OSTI)

A precise evaluation of the spectrum in the reaction ?-+D?2n+?, including final-state interactions is presented with a view of determining the neutron-neutron scattering length. Approximations of previous calculations are examined and avoided where their effect is found to be significant. Sufficiently accurate experiments should be capable of distinguishing this parameter to an error of 1 F.

Myron Bander

1964-06-08T23:59:59.000Z

189

The Distributed Stigmergic Algorithm for Multi-parameter Optimization  

E-Print Network [OSTI]

Stig- mergy Algorithm (MASA) for minimizing the power losses in an electric motor by optimizing to the electric motor design in Section 5. Finally, we conclude the paper in Section 6. 2 The Ant Stigmergy the independent geometrical parameters of the ro- tor and the stator. The efficiency of the algorithm

Silc, Jurij

190

Numerical Calculations of Steady State Microwave Plasma Parameters  

E-Print Network [OSTI]

eV of energy per ionization to the background neutrals. The neutral gas is assumed to be hydrogen was motivated by a desire to predict the plasma parameters in the ELMO Bumpy Torus presently under construction is approximated by a complicated analytic function of electron energy. The electrons and ions are assumed

Sprott, Julien Clinton

191

Application of lumped-parameter Lars Bo Ibsen  

E-Print Network [OSTI]

Department of Civil Engineering Division of Water and Soil Application of lumped-parameter models by Lars Bo journals. Technical Memoranda are produced to enable the preliminary dissemination of scientific work references are given to publications of this kind. Contract Reports are produced to report scientific work

192

Simple neutrino mass matrix with only two free parameters  

E-Print Network [OSTI]

A simple form of neutrino mass matrix which has only two free parameters is proposed from a phenomenological point of view. Using this mass matrix, we succeed to reproduce all the observed values for the MNS lepton mixing angles and the neutrino mass squared difference ratio. Our model also predicts $\\delta_{\

Hiroyuki Nishiura; Takeshi Fukuyama

2014-05-10T23:59:59.000Z

193

Direct estimation of Patlak parameters from list mode pet data  

Science Journals Connector (OSTI)

We describe a method to directly estimate Patlak parameters from list mode data. Based on the Patlak model, the uptake rate function of each voxel can be written as a linear combination of the blood input function and its integral, with the slope and ... Keywords: FDG PET, PET, incremental gradient, list mode, the Patlak Model

Quanzheng Li; Richard M. Leahy

2009-06-01T23:59:59.000Z

194

Canonical Ridge Analysis with Ridge Parameter Optimization Description of slides  

E-Print Network [OSTI]

Canonical Ridge Analysis with Ridge Parameter Optimization Description of slides Finn Å¡ Arup Nielsen May 25, 1998 1 First slide: The formula and an example The first slide shows a simplification is yellow/red for positive and blue for negative. Black is zero. 2 Second slide: Pros and cons The second

Nielsen, Finn Ã?rup

195

Probabilistic prediction of green roof energy performance under parameter uncertainty  

Science Journals Connector (OSTI)

Abstract Studies on the quantification of energy benefits of a green roof have so far treated its parameter values only deterministically. In reality, however, these values may scatter over different ranges due to the inherent variation of vegetation and soil properties and also because of the unavoidable deviation from designated values during construction and/or actual operation of a green roof. Under such parameter uncertainty, green roof performance can no longer be predicted deterministically but rather probabilistically. The present study attempts to integrate the whole building energy simulation with a parametric uncertainty analysis. An example office building is used to systematically examine how the cooling and heating energy demands can be reduced by a green roof that replaces a conventional roof, when values of the most significant green roof parameters determined by sensitivity analysis are treated as random variables with prescribed probability distributions. An ensemble of green roof configurations is generated using Monte Carlo simulation with a Latin hypercube sampling technique. The coefficient of variation of the calculated energy savings is found almost linearly related to (with a slope of about 0.4) that of green roof parameters. Finally, implications of probabilistic energy analysis for more reliable green roof design are emphasized.

Min (Max) Liu

2014-01-01T23:59:59.000Z

196

Optimization of Structural Dynamic Behaviour Based on Effective Modal Parameters  

E-Print Network [OSTI]

Optimization of Structural Dynamic Behaviour Based on Effective Modal Parameters S. Besset, L. J Optimization of complex structures often leads to high calculation costs. In- deed, the structure has to be frequently reanalysed in order to update the opti- mization criteriums. We propose an optimization method

Paris-Sud XI, Université de

197

23rd March 2012 Parameter Synthesis for Hierarchical  

E-Print Network [OSTI]

CS Seminar 23rd March 2012 Parameter Synthesis for Hierarchical Concurrent Real-Time Systems.-S. Dong, L. Fribourg, Y. Liu, R. Soulat, J. Sun Ã?tienne ANDRÃ? (LIPN) Parametric Stateful Timed CSP 23rd) Parametric Stateful Timed CSP 23rd March 2012 2 / 49 #12;Introduction Context: Model Checking Timed Systems

André, �tienne

198

Decoupling Interrelated Parameters for Designing High Performance Thermoelectric Materials  

Science Journals Connector (OSTI)

Decoupling Interrelated Parameters for Designing High Performance Thermoelectric Materials ... Solution Processed Cu2CoSnS4 Thin Films for Photovoltaic Applications ... Earth abundant alternative chalcopyrite Cu2CoSnS4 (CCTS) thin films were deposited by a facile sol–gel process onto larger substrates. ...

Chong Xiao; Zhou Li; Kun Li; Pengcheng Huang; Yi Xie

2014-02-11T23:59:59.000Z

199

PARAMETER ESTIMATION BASED MODELS OF WATER SOURCE HEAT PUMPS  

E-Print Network [OSTI]

PARAMETER ESTIMATION BASED MODELS OF WATER SOURCE HEAT PUMPS By HUI JIN Bachelor of Science validation of the water-to-air heat pump model. It's hard to find any words to express the thanks to my BASED MODELS OF WATER SLOURCE HEAT PUMPS Thesis Approved: Thesis Adviser Dean of the Graduate College ii

200

STATE-PARAMETER IDENTIFICATION PROBLEMS FOR ACCURATE BUILDING ENERGY AUDITS  

E-Print Network [OSTI]

STATE-PARAMETER IDENTIFICATION PROBLEMS FOR ACCURATE BUILDING ENERGY AUDITS Jordan Brouns1 calibration. The present paper investigates the use of such techniques to derive an energy audit procedure fails to predict accurately the real energy performance, mostly due to great uncertainties in the input

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "tox parameter tox" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Determination of Parameters of PV Concentrating System With Heliostat  

Science Journals Connector (OSTI)

The structure of PV concentrating system with heliostat is analyzed. The mathematical model of system consisting of PV concentrating module and heliostat is developed. With the use of developed mathematical model the optimal parameters of the system are determined. The results of this work can be used during the design of PV concentrating systems with heliostats.

R. Vardanyan; A. Norsoyan; V. Dallakyan

2010-01-01T23:59:59.000Z

202

Likelihood transform: making optimization and parameter estimation easier  

E-Print Network [OSTI]

Parameterized optimization and parameter estimation is of great importance in almost every branch of modern science, technology and engineering. A practical issue in the problem is that when the parameter space is large and the available data is noisy, the geometry of the likelihood surface in the parameter space will be complicated. This makes searching and optimization algorithms computationally expensive, sometimes even beyond reach. In this paper, we define a likelihood transform which can make the structure of the likelihood surface much simpler, hence reducing the intrinsic complexity and easing optimization significantly. We demonstrate the properties of likelihood transform by apply it to a simplified gravitational wave chirp signal search. For the signal with an signal-to-noise ratio 20, likelihood transform has made a deterministic template-based search possible for the first time, which turns out to be 1000 times more efficient than an exhaustive grid- based search. The method in principle can be applied to other problems in other fields as the spirit of parameterized optimization and parameter estimation problem is the same.

Yan Wang

2014-02-25T23:59:59.000Z

203

Six parameter water temperature model W. Nicholas Beer  

E-Print Network [OSTI]

and allow comparison of different temperature profiles. A six parameter model is developed as an extension. The example uses 10 years of flow and temperature data from the Snake River near Anatone, Washington with the dashed line in Figure 1. Day of year DegreesC 0 100 200 300 0510152025 Snake River Temperatures

Washington at Seattle, University of

204

A Prescription for Galaxy Biasing Evolution as a Nuisance Parameter  

E-Print Network [OSTI]

There is currently no consistent approach to modelling galaxy bias evolution in cosmological inference. This lack of a common standard makes the rigorous comparison or combination of probes difficult. We show that the choice of biasing model has a significant impact on cosmological parameter constraints for a survey such as the Dark Energy Survey (DES), considering the 2-point correlations of galaxies in five tomographic redshift bins. We find that modelling galaxy bias with a free biasing parameter per redshift bin gives a Figure of Merit (FoM) for Dark Energy equation of state parameters $w_0, w_a$ smaller by a factor of 10 than if a constant bias is assumed. An incorrect bias model will also cause a shift in measured values of cosmological parameters. Motivated by these points and focusing on the redshift evolution of linear bias, we propose the use of a generalised galaxy bias which encompasses a range of bias models from theory, observations and simulations, $b(z) = c + (b_0 - c)/D(z)^\\alpha$, where $c, ...

Clerkin, L; Lahav, O; Abdalla, F B; Gaztanaga, E

2014-01-01T23:59:59.000Z

205

Parameter Estimation Using Dual Fractional Power Filters Jason M. Kinser  

E-Print Network [OSTI]

by the user, they only have to be contained within the training set. A dual filter system will be created from an unknown input from the training set was operated on by the filter the constraint value associatedParameter Estimation Using Dual Fractional Power Filters Jason M. Kinser The Institute

Kinser, Jason M.

206

Optimizing Nested Queries with Parameter Sort Orders Ravindra Guravannavar  

E-Print Network [OSTI]

Optimizing Nested Queries with Parameter Sort Orders Ravindra Guravannavar Ramanujam H.s@sybase.com Indian Institute of Technology Bombay sudarsha@cse.iitb.ac.in Abstract Nested iteration is an important technique for query evaluation. It is the default way of execut- ing nested subqueries in SQL. Although

Sudarshan, S.

207

Simple neutrino mass matrix with only two free parameters  

E-Print Network [OSTI]

A simple form of neutrino mass matrix which has only two free parameters is proposed from a phenomenological point of view. Using this mass matrix, we succeed to reproduce all the observed values for the MNS lepton mixing angles and the neutrino mass squared difference ratio. Our model also predicts $\\delta_{\

Nishiura, Hiroyuki

2014-01-01T23:59:59.000Z

208

Camera Parameters Estimation from Hand-labelled Sun Sositions  

E-Print Network [OSTI]

Camera Parameters Estimation from Hand-labelled Sun Sositions in Image Sequences Jean the sun is visible in an image sequence. The technique requires a user to label the position of the sun Results on Real Data 7 6 Summary 8 #12;#12;1 1 Introduction In this document, we show that if the sun

Treuille, Adrien

209

High-Speed Parameter Estimation Algorithms For Nonlinear Smart Materials  

E-Print Network [OSTI]

High-Speed Parameter Estimation Algorithms For Nonlinear Smart Materials Jon M. Ernstberger with experimental data. 1. INTRODUCTION Smart materials exhibit unique actuator and sensor capabilities for a range of aerospace, aeronautic, indus- trial and DoD applications. Applications of smart materials include

210

An Object-Based Audio Rendering System using Spatial Parameters  

E-Print Network [OSTI]

An Object-Based Audio Rendering System using Spatial Parameters Kuo-Lun Huang, Tai-Ming Chang, and Pao-Chi Chang Department of Communication Engineering National Central University Jhongli, Taiwan {klhuang, tmchang, pcchang}@vaplab.ce.ncu.edu.tw Abstract--In this paper, we propose an object-based audio

Chang, Pao-Chi

211

Environmental Transport Input Parameters for the Biosphere Model  

SciTech Connect (OSTI)

This analysis report is one of the technical reports documenting the Environmental Radiation Model for Yucca Mountain, Nevada (ERMYN), a biosphere model supporting the total system performance assessment for the license application (TSPA-LA) for the geologic repository at Yucca Mountain. A graphical representation of the documentation hierarchy for the ERMYN is presented in Figure 1-1. This figure shows relationships among the reports developed for biosphere modeling and biosphere abstraction products for the TSPA-LA, as identified in the ''Technical Work Plan for Biosphere Modeling and Expert Support'' (BSC 2004 [DIRS 169573]) (TWP). This figure provides an understanding of how this report contributes to biosphere modeling in support of the license application (LA). This report is one of the five reports that develop input parameter values for the biosphere model. The ''Biosphere Model Report'' (BSC 2004 [DIRS 169460]) describes the conceptual model and the mathematical model. The input parameter reports, shown to the right of the Biosphere Model Report in Figure 1-1, contain detailed description of the model input parameters. The output of this report is used as direct input in the ''Nominal Performance Biosphere Dose Conversion Factor Analysis'' and in the ''Disruptive Event Biosphere Dose Conversion Factor Analysis'' that calculate the values of biosphere dose conversion factors (BDCFs) for the groundwater and volcanic ash exposure scenarios, respectively. The purpose of this analysis was to develop biosphere model parameter values related to radionuclide transport and accumulation in the environment. These parameters support calculations of radionuclide concentrations in the environmental media (e.g., soil, crops, animal products, and air) resulting from a given radionuclide concentration at the source of contamination (i.e., either in groundwater or in volcanic ash). The analysis was performed in accordance with the TWP (BSC 2004 [DIRS 169573]).

M. Wasiolek

2004-09-10T23:59:59.000Z

212

Soil-related Input Parameters for the Biosphere Model  

SciTech Connect (OSTI)

This analysis is one of the technical reports containing documentation of the Environmental Radiation Model for Yucca Mountain Nevada (ERMYN), a biosphere model supporting the Total System Performance Assessment (TSPA) for the geologic repository at Yucca Mountain. The biosphere model is one of a series of process models supporting the Total System Performance Assessment (TSPA) for the Yucca Mountain repository. A graphical representation of the documentation hierarchy for the ERMYN biosphere model is presented in Figure 1-1. This figure shows the interrelationships among the products (i.e., analysis and model reports) developed for biosphere modeling, and the plan for development of the biosphere abstraction products for TSPA, as identified in the ''Technical Work Plan: for Biosphere Modeling and Expert Support'' (BSC 2003 [163602]). It should be noted that some documents identified in Figure 1-1 may be under development at the time this report is issued and therefore not available. This figure is included to provide an understanding of how this analysis report contributes to biosphere modeling in support of the license application, and is not intended to imply that access to the listed documents is required to understand the contents of this report. This report, ''Soil Related Input Parameters for the Biosphere Model'', is one of the five analysis reports that develop input parameters for use in the ERMYN model. This report is the source documentation for the six biosphere parameters identified in Table 1-1. ''The Biosphere Model Report'' (BSC 2003 [160699]) describes in detail the conceptual model as well as the mathematical model and its input parameters. The purpose of this analysis was to develop the biosphere model parameters needed to evaluate doses from pathways associated with the accumulation and depletion of radionuclides in the soil. These parameters support the calculation of radionuclide concentrations in soil from on-going irrigation and ash deposition and, as a direct consequence, radionuclide concentration in resuspended particulate matter in the atmosphere. The analysis was performed in accordance with the technical work plan for the biosphere modeling and expert support (TWP) (BSC 2003 [163602]). This analysis revises the previous one titled ''Evaluate Soil/Radionuclide Removal by Erosion and Leaching'' (CRWMS M&O 2001 [152517]). In REV 00 of this report, the data generated were fixed (i.e., taking no account of uncertainty and variability) values. This revision incorporates uncertainty and variability into the values for the bulk density, elemental partition coefficients, average annual loss of soil from erosion, resuspension enhancement factor, and field capacity water content.

A. J. Smith

2003-07-02T23:59:59.000Z

213

Computational Procedures for Determining Parameters in Ramberg-Osgood  

Office of Scientific and Technical Information (OSTI)

Computational Procedures for Determining Parameters in Ramberg-Osgood Computational Procedures for Determining Parameters in Ramberg-Osgood Elastoplastic Model Based on Modulus and Damping Versus Strain Tzou-Shin Ueng Jian-Chu Chen July, 1992 DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency Thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or

214

ET Parameters for Mixed-Valence Ru Complexes  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Convergence of Spectroscopic and Kinetic Electron Transfer Parameters for Convergence of Spectroscopic and Kinetic Electron Transfer Parameters for Mixed-Valence Binuclear Dipyridylamide Ruthenium Ammine Complexes Alison J. Distefano, James F. Wishart, and Stephan S. Isied Coord. Chem. Rev. 249, 507-516 (2005). [Find paper at Elsevier Science Direct] Abstract: A series of binuclear ruthenium(II,III) pentaammine complexes bridged by 4-pyridyl isonicotinamide (iso-apy) and methyl, 4-pyridyl isonicotinamide (iso-mapy), and their mononuclear congeners, were studied by spectroscopic and kinetic techniques. The amide functionality provides asymmetry between the electronic environments of the metal ions bound to the aminopyridine (apy) and pyridine carbonyl (iso) ends. The resulting difference is observed in the charge transfer spectra and the

215

Performance and safety parameters for the high flux isotope reactor  

SciTech Connect (OSTI)

A Monte Carlo depletion model for the High Flux Isotope Reactor (HFIR) Cycle 400 and its use in calculating parameters of relevance to the reactor performance and safety during the reactor cycle are presented in this paper. This depletion model was developed to serve as a reference for the design of a low-enriched uranium (LEU) fuel for an ongoing study to convert HFIR from high-enriched uranium (HEU) to LEU fuel; both HEU and LEU depletion models use the same methodology and ENDF/B-VII nuclear data as discussed in this paper. The calculated HFIR Cycle 400 parameters, which are compared with measurement data from critical experiments performed at HFIR, data included in the HFIR Safety Analysis Report (SAR), or data reported by previous calculations, provide a basis for verification or updating of the corresponding SAR data. (authors)

Ilas, G. [Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, TN 37831-6172 (United States); Primm III, T. [Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, TN 37831-6172 (United States); Primm Consulting, LLC, 945 Laurel Hill Road, Knoxville, TN 37923 (United States)

2012-07-01T23:59:59.000Z

216

Parameter consistency in multienergetic k?p models  

Science Journals Connector (OSTI)

Standard derivations of multiband k?p models rely on Löwdin perturbation theory. Close examination of this method, however, reveals that it is unsuitable for treating systems with multiple zeroth-order energies. As a result, various perturbation sums in multienergetic k?p models are not well defined, and a consistent set of k?p parameters cannot be guaranteed. We inspect this difficulty and present an alternative derivation of the k?p theory based on the method of infinitesimal basis transformations. This approach clearly demonstrates that a consistent k?p matrix can be generated from an arbitrary number of zeroth-order wave functions regardless of their energies. In addition, we obtain a corrected expression for off-diagonal perturbation sums. The expression is applied to give the corrected form for the asymmetric B parameter in the s-p-coupled zinc-blende k?p Hamiltonian.

John P. Loehr

1995-07-15T23:59:59.000Z

217

Watt parameters for the Los Alamos Model : Subroutine getab  

E-Print Network [OSTI]

Many neutron transport Monte-Carlo codes can randomly sample fission neutron energies from a Watt spectrum. The quality of simulations depends on how well the Watt spectrum represents the true energy spectrum of the fission neutrons, and on one's choice of the Watt parameters a and b. The energy spectra of fission neutrons have been calculated and tabulated for the neutron induced fission of 235,238U and 239Pu as a function of incoming neutron energy by Madland using the Los Alamos Model. Each of these energy spectra are mapped into time-of-flight space and fitted with a Watt spectrum. A subroutine getab has been written to interpolate these results, so that Watt a and b parameters can be estimated for all incoming neutron energies up to ~16 MeV.

Lestone, J P

2014-01-01T23:59:59.000Z

218

Watt parameters for the Los Alamos Model : Subroutine getab  

E-Print Network [OSTI]

Many neutron transport Monte-Carlo codes can randomly sample fission neutron energies from a Watt spectrum. The quality of simulations depends on how well the Watt spectrum represents the true energy spectrum of the fission neutrons, and on one's choice of the Watt parameters a and b. The energy spectra of fission neutrons have been calculated and tabulated for the neutron induced fission of 235,238U and 239Pu as a function of incoming neutron energy by Madland using the Los Alamos Model. Each of these energy spectra are mapped into time-of-flight space and fitted with a Watt spectrum. A subroutine getab has been written to interpolate these results, so that Watt a and b parameters can be estimated for all incoming neutron energies up to ~16 MeV.

J. P. Lestone

2014-09-18T23:59:59.000Z

219

Determination of dynamic fracture parameters for HF?1 steel  

Science Journals Connector (OSTI)

Dynamic fracture parameters have been determined for two heat treatments of HF?1 steel. A gas gun was used for the experiments. Different amounts of fracture damage were produced in HF?1 steel specimens under known impact conditions. The specimens were soft recovered sectioned and polished to reveal any internal microscopic fracture. The fracturecracks were then digitized. The velocities of the 1.15? 1.59? and 2.37?mm?thick impactor disks range from 0.120 to 0.276 km/s. The specimen disks were 3.18? and 6.35?mm thick. An SRI stress wave propagationcomputer program with a brittlefracturemodel was used for calculating the dynamic fracture parameters. A series of Hugoniot experiments was performed for HF?1 steel to determine equation of state input data for the computer program. The Hugoniot elastic limits were 2.2 and 2.4 GPa for the two heat treatments.

Willis Mock Jr.; William H. Holt

1982-01-01T23:59:59.000Z

220

Weighted statistical parameters for irregularly sampled time series  

E-Print Network [OSTI]

Unevenly spaced time series are common in astronomy because of the day-night cycle, weather conditions, dependence on the source position in the sky, allocated telescope time, corrupt measurements, for example, or be inherent to the scanning law of satellites like Hipparcos and the forthcoming Gaia. This paper aims at improving the accuracy of common statistical parameters for the characterization of irregularly sampled signals. The uneven representation of time series, often including clumps of measurements and gaps with no data, can severely disrupt the values of estimators. A weighting scheme adapting to the sampling density and noise level of the signal is formulated. Its application to time series from the Hipparcos periodic catalogue led to significant improvements in the overall accuracy and precision of the estimators with respect to the unweighted counterparts and those weighted by inverse-squared uncertainties. Automated classification procedures employing statistical parameters weighted by the sugg...

Rimoldini, Lorenzo

2014-01-01T23:59:59.000Z

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221

A precision measurement of the muon decay parameter delta  

E-Print Network [OSTI]

The muon decay parameter delta characterizes momentum dependence of the parity-violating muon decay asymmetry. A new measurement of delta has been performed using the first physics data recorded by the TWIST experiment at TRIUMF. The obtained value, delta=0.74964+-0.00066(stat.)+-0.00112(syst.), is consistent with the Standard Model expectation delta=3/4. This is the first determination of delta performed using a blind analysis technique. Combined with other data, the measurement sets new model-independent limits on effective right-handed couplings of the muon. Improved limits on the product of another muon decay parameter, xi, and the muon polarization in pion decay, Pmu, are obtained in the form: 0.9960Pmu*xi<=xi<1.0040, at 90% confidence level. Implications for left-right symmetric models are discussed.

Gaponenko, Andrei

2011-01-01T23:59:59.000Z

222

A precision measurement of the muon decay parameter delta  

E-Print Network [OSTI]

The muon decay parameter delta characterizes momentum dependence of the parity-violating muon decay asymmetry. A new measurement of delta has been performed using the first physics data recorded by the TWIST experiment at TRIUMF. The obtained value, delta=0.74964+-0.00066(stat.)+-0.00112(syst.), is consistent with the Standard Model expectation delta=3/4. This is the first determination of delta performed using a blind analysis technique. Combined with other data, the measurement sets new model-independent limits on effective right-handed couplings of the muon. Improved limits on the product of another muon decay parameter, xi, and the muon polarization in pion decay, Pmu, are obtained in the form: 0.9960Pmu*xi<=xi<1.0040, at 90% confidence level. Implications for left-right symmetric models are discussed.

Andrei Gaponenko

2011-04-14T23:59:59.000Z

223

Study of some parameters interstellar transport using of magnetic umbrella  

E-Print Network [OSTI]

Interstellar transport is an object of interest in many sci-fi stories. In history a lot of sci-fi predictions have turned into reality, such as communications satellites, deep-sea submarines and journies to the moon. In this work we study some physical parameters of a space ship which uses a magnetic umbrella. Our spaceship generates a magnetic field in its neighborhood and captures charged protons into a magnetic trap. These particles are taken into a fusion reactor. The obtained energy and waste in form of helium are used as a fuel in an ion engine. With the help of elementary physics we can work out the basic physical parameters of the ship, e.g. maximal velocity, acceleration of the ship or acceleration time period.

Martin ?ermák

2013-01-28T23:59:59.000Z

224

Study of some parameters interstellar transport using of magnetic umbrella  

E-Print Network [OSTI]

Interstellar transport is an object of interest in many sci-fi stories. In history a lot of sci-fi predictions have turned into reality, such as communications satellites, deep-sea submarines and journies to the moon. In this work we study some physical parameters of a space ship which uses a magnetic umbrella. Our spaceship generates a magnetic field in its neighborhood and captures charged protons into a magnetic trap. These particles are taken into a fusion reactor. The obtained energy and waste in form of helium are used as a fuel in an ion engine. With the help of elementary physics we can work out the basic physical parameters of the ship, e.g. maximal velocity, acceleration of the ship or acceleration time period.

?ermák, Martin

2013-01-01T23:59:59.000Z

225

Model of the Stochastic Vacuum and QCD Parameters  

E-Print Network [OSTI]

Accounting for the two independent correlation functions of the QCD vacuum, we improve the simple and consistent description given by the model of the stochastic vacuum to the high-energy pp and pbar-p data, with a new determination of parameters of non-perturbative QCD. The increase of the hadronic radii with the energy accounts for the energy dependence of the observables.

Erasmo Ferreira; Flávio Pereira

1997-05-09T23:59:59.000Z

226

Quark Phase Transition Parameters and $?$-Meson Field in RMF Theory  

E-Print Network [OSTI]

The deconfinement phase transition from hadronic matter to quark matter in the interior of compact stars is investigated. The hadronic phase is described in the framework of relativistic mean-field (RMF) theory, when also the scalar- isovector $\\delta$-meson effective field is taken into account. To describe a quark phase the MIT bag model is used. The changes of the mixed phase threshold parameters caused by the presence of $\\delta$-meson field are investigated.

G. B. Alaverdyan

2009-07-23T23:59:59.000Z

227

Local Gersten's conjecture for regular system of parameters Satoshi Mochizuki  

E-Print Network [OSTI]

) and whose projective dimension is less than p by MI A(p). If ht I = p, we write WtI A := MI A. Gersten). The inclusion functor WtI A Mp-1 A in- duces zero maps Kn(WtI A) Kn(Mp-1 A ) for any non-negative integer n system of parameter f1, . . . , fp, then the canonical inclusion functor WtI A MJ A(p) induces the zero

228

Inhalation Exposure Input Parameters for the Biosphere Model  

SciTech Connect (OSTI)

This analysis is one of 10 reports that support the Environmental Radiation Model for Yucca Mountain, Nevada (ERMYN) biosphere model. The ''Biosphere Model Report'' (BSC 2004 [DIRS 169460]) describes in detail the conceptual model as well as the mathematical model and its input parameters. This report documents development of input parameters for the biosphere model that are related to atmospheric mass loading and supports the use of the model to develop biosphere dose conversion factors (BDCFs). The biosphere model is one of a series of process models supporting the total system performance assessment (TSPA) for a Yucca Mountain repository. Inhalation Exposure Input Parameters for the Biosphere Model is one of five reports that develop input parameters for the biosphere model. A graphical representation of the documentation hierarchy for the ERMYN is presented in Figure 1-1. This figure shows the interrelationships among the products (i.e., analysis and model reports) developed for biosphere modeling, and the plan for development of the biosphere abstraction products for TSPA, as identified in the Technical Work Plan for Biosphere Modeling and Expert Support (BSC 2004 [DIRS 169573]). This analysis report defines and justifies values of mass loading for the biosphere model. Mass loading is the total mass concentration of resuspended particles (e.g., dust, ash) in a volume of air. Mass loading values are used in the air submodel of ERMYN to calculate concentrations of radionuclides in air inhaled by a receptor and concentrations in air surrounding crops. Concentrations in air to which the receptor is exposed are then used in the inhalation submodel to calculate the dose contribution to the receptor from inhalation of contaminated airborne particles. Concentrations in air surrounding plants are used in the plant submodel to calculate the concentrations of radionuclides in foodstuffs contributed from uptake by foliar interception.

K. Rautenstrauch

2004-09-10T23:59:59.000Z

229

Distributed parameter hydrologic modeling usinsg object-oriented simulation  

E-Print Network [OSTI]

DISTRIBUTED PARAMETER HYDROLOGIC MODELING USING OBJECT-ORIENTED SIMULATION A Thesis by KENNETH RAY KLANIKA Submitted to Texas A&M University in partial fulfilhnent of the requirements for the degree of MASTER OF SCIENCE Approved as to style...). The Geographic Object-Oriented Simulation Environment [GOOSE] is linked with GRASS, and is used to create the basic patch network from GRASS ASCII vector and attribute files. The model, written in Common Lisp Object System [CLOS] language, was designed around...

Klanika, Kenneth Ray

2012-06-07T23:59:59.000Z

230

Parameter identification of a vibratory system with a clearance  

E-Print Network [OSTI]

Co-Chairmen of Advisory Committee: Dr. FL M. Alexander Dr. S. T. Noah An analytical and experimental investigation of a vibratory system with a clearance was conducted. A finite element model and an equivalent single degree of freedom dosed... Parameters Experimental Analytical Damping Equivalent Single Degree of Freedom Model IV FINITE ELEMENT MODEL . B 10 10 15 19 20 24 Finite Element Model Without Rigid Stop Finite Element Model With Rigid Stop V CLOSED-FORM SOLUTION...

Franck, Charles Graves

1987-01-01T23:59:59.000Z

231

Advanced research in instrumentation and control technology: Acoustic parameter studies  

SciTech Connect (OSTI)

In the process of developing acoustic/ultrasonic instruments for coal conversion and combustion processes, there is a need to understand various complex relations between acoustic parameters and physical properties of coal/gas and coal/liquid media so that the instrument readings and measurement accuracy can be evaluated and new sensing techniques can be developed. The primary objective of this project is to examine the theory and perform measurements of acoustic/ultrasonic parameters in such coal media. The acoustic parameters of interest are sound speed, attenuation, scattering pattern, and resonance scattering, which relate directly or indirectly to coal concentration, particle size and distribution, and rheological and thermal properties. In summary, we have developed a laboratory technique for accurate attenuation measurement in highly viscous liquids and coal slurries. For pure liquids, the attenuation in low frequency (0.8 to 2 MHz) provides a direct measurement of fluid shear viscosity. For coal slurries of low concentration (<10% by weight) attenuation in the same frequency range still follows the variation of fluid viscosity. But, for slurries of higher coal concentration, anomalous attenuation may be measured, depending on the fluid structure, which is believed to be a micor-inhomogeneous medium. 8 refs., 5 figs., 1 tab.

Sheen, S.H.; Bobis, J.P.; Raptis, A.C.

1986-01-01T23:59:59.000Z

232

Parameter Estimation Versus Homogenization Techniques in Time-Domain Characterization of Composite Dielectrics  

E-Print Network [OSTI]

Parameter Estimation Versus Homogenization Techniques in Time-Domain Characterization of Composite problem approach to parameter estimation with homogenization techniques for characterizing the electrical with heterogeneous micro-structures which are described by spatially periodic parameters. We also consider

233

Distinguishability analysis of controller parameters with applications to DFIG based wind turbine  

Science Journals Connector (OSTI)

The power system controllers normally have more than one parameter. The distinguishability analysis of the controller parameters is to identify whether the optimal set of the parameters of the controllers is uniq...

Chuan Qin; Ping Ju; Feng Wu; Lei Liu

2013-10-01T23:59:59.000Z

234

Soil-Related Input Parameters for the Biosphere Model  

SciTech Connect (OSTI)

This report presents one of the analyses that support the Environmental Radiation Model for Yucca Mountain Nevada (ERMYN). The ''Biosphere Model Report'' (BSC 2004 [DIRS 169460]) describes the details of the conceptual model as well as the mathematical model and the required input parameters. The biosphere model is one of a series of process models supporting the postclosure Total System Performance Assessment (TSPA) for the Yucca Mountain repository. A schematic representation of the documentation flow for the Biosphere input to TSPA is presented in Figure 1-1. This figure shows the evolutionary relationships among the products (i.e., analysis and model reports) developed for biosphere modeling, and the biosphere abstraction products for TSPA, as identified in the ''Technical Work Plan for Biosphere Modeling and Expert Support'' (TWP) (BSC 2004 [DIRS 169573]). This figure is included to provide an understanding of how this analysis report contributes to biosphere modeling in support of the license application, and is not intended to imply that access to the listed documents is required to understand the contents of this report. This report, ''Soil-Related Input Parameters for the Biosphere Model'', is one of the five analysis reports that develop input parameters for use in the ERMYN model. This report is the source documentation for the six biosphere parameters identified in Table 1-1. The purpose of this analysis was to develop the biosphere model parameters associated with the accumulation and depletion of radionuclides in the soil. These parameters support the calculation of radionuclide concentrations in soil from on-going irrigation or ash deposition and, as a direct consequence, radionuclide concentration in other environmental media that are affected by radionuclide concentrations in soil. The analysis was performed in accordance with the TWP (BSC 2004 [DIRS 169573]) where the governing procedure was defined as AP-SIII.9Q, ''Scientific Analyses''. This analysis revises the previous version with the same name (BSC 2003 [DIRS 161239]), which was itself a revision of one titled ''Evaluate Soil/Radionuclide Removal by Erosion and Leaching'' (CRWMS M&O 2001 [DIRS 152517]). In Revision 00 of this report, the data generated were fixed values (i.e., taking no account of uncertainty and variability). Revision 01 (BSC 2003 [DIRS 161239]) incorporated uncertainty and variability into the values for the bulk density, elemental partition coefficients, average annual loss of soil from erosion, resuspension enhancement factor, and field capacity water content. The current revision of this document improves the transparency and traceability of the products without changing the details of the analysis. This analysis report supports the treatment of six of the features, events, and processes (FEPs) applicable to the Yucca Mountain reference biosphere (DTN: MO0407SEPFEPLA.000 [DIRS 170760]). The use of the more recent FEP list in DTN: MO0407SEPFEPLA.000 [DIRS 170760] represents a deviation from the detail provided in the TWP (BSC 2004 [DIRS 169573]), which referenced a previous version of the FEP list. The parameters developed in this report support treatment of these six FEPs addressed in the biosphere model that are listed in Table 1-1. Inclusion and treatment of FEPs in the biosphere model is described in the ''Biosphere Model Report'' (BSC 2004 [DIRS 169460], Section 6.2).

A. J. Smith

2004-09-09T23:59:59.000Z

235

Geoelectrical Measurement of Multi-Scale Mass Transfer Parameters  

SciTech Connect (OSTI)

Mass transfer affects contaminant transport and is thought to control the efficiency of aquifer remediation at a number of sites within the Department of Energy (DOE) complex. An improved understanding of mass transfer is critical to meeting the enormous scientific and engineering challenges currently facing DOE. Informed design of site remedies and long-term stewardship of radionuclide-contaminated sites will require new cost-effective laboratory and field techniques to measure the parameters controlling mass transfer spatially and across a range of scales. In this project, we sought to capitalize on the geophysical signatures of mass transfer. Previous numerical modeling and pilot-scale field experiments suggested that mass transfer produces a geoelectrical signature—a hysteretic relation between sampled (mobile-domain) fluid conductivity and bulk (mobile + immobile) conductivity—over a range of scales relevant to aquifer remediation. In this work, we investigated the geoelectrical signature of mass transfer during tracer transport in a series of controlled experiments to determine the operation of controlling parameters, and also investigated the use of complex-resistivity (CR) as a means of quantifying mass transfer parameters in situ without tracer experiments. In an add-on component to our grant, we additionally considered nuclear magnetic resonance (NMR) to help parse mobile from immobile porosities. Including the NMR component, our revised study objectives were to: 1. Develop and demonstrate geophysical approaches to measure mass-transfer parameters spatially and over a range of scales, including the combination of electrical resistivity monitoring, tracer tests, complex resistivity, nuclear magnetic resonance, and materials characterization; and 2. Provide mass-transfer estimates for improved understanding of contaminant fate and transport at DOE sites, such as uranium transport at the Hanford 300 Area. To achieve our objectives, we implemented a 3-part research plan involving (1) development of computer codes and techniques to estimate mass-transfer parameters from time-lapse electrical data; (2) bench-scale experiments on synthetic materials and materials from cores from the Hanford 300 Area; and (3) field demonstration experiments at the DOE’s Hanford 300 Area. In a synergistic add-on to our workplan, we analyzed data from field experiments performed at the DOE Naturita Site under a separate DOE SBR grant, on which PI Day-Lewis served as co-PI. Techniques developed for application to Hanford datasets also were applied to data from Naturita. 1. Introduction The Department of Energy (DOE) faces enormous scientific and engineering challenges associated with the remediation of legacy contamination at former nuclear weapons production facilities. Selection, design and optimization of appropriate site remedies (e.g., pump-and-treat, biostimulation, or monitored natural attenuation) requires reliable predictive models of radionuclide fate and transport; however, our current modeling capabilities are limited by an incomplete understanding of multi-scale mass transfer—its rates, scales, and the heterogeneity of controlling parameters. At many DOE sites, long “tailing” behavior, concentration rebound, and slower-than-expected cleanup are observed; these observations are all consistent with multi-scale mass transfer [Haggerty and Gorelick, 1995; Haggerty et al., 2000; 2004], which renders pump-and-treat remediation and biotransformation inefficient and slow [Haggerty and Gorelick, 1994; Harvey et al., 1994; Wilson, 1997]. Despite the importance of mass transfer, there are significant uncertainties associated with controlling parameters, and the prevalence of mass transfer remains a point of debate [e.g., Hill et al., 2006; Molz et al., 2006] for lack of experimental methods to verify and measure it in situ or independently of tracer breakthrough. There is a critical need for new field-experimental techniques to measure mass transfer in-situ and estimate multi-scale and spatially variable mass-transfer parame

Day-Lewis, Frederick; Singha, Kamini; Haggerty, Roy; Johnson, Tim; Binley, Andrew; Lane, John

2014-01-16T23:59:59.000Z

236

Study of the decay asymmetry parameter and CP violation parameter in the Lambda(c)+ ---> Lambda pi+ decay  

SciTech Connect (OSTI)

Using data from the FOCUS (E831) experiment at Fermilab, we present a new measurement of the weak decay-asymmetry parameter a{sub {Lambda}{sub c}} in {Lambda}{sub c}{sup +} {yields} {Lambda}{pi}{sup +} decay. Comparing particle with antiparticle decays, we obtain the first measurement of the CP violation parameter {Alpha} {triple_bond} a{sub {Lambda}{sub c}} + a{sub {ovr {Lambda}{sub c}}}/a{sub {Lambda}{sub c}} - a{sub {ovr {Lambda}{sub c}}}. We obtain a{sub {Lambda}{sub c}} = -0.78 {+-} 0.16 {+-} 0.13 and {Alpha} = -0.07 {+-} 0.19 {+-} 0.12 where errors are statistical and systematic.

Link, J.M.; Yager, P.M.; /UC, Davis; Anjos, J.C.; Bediaga, I.; Castromonte, C.; Machado, A.A.; Magnin, J.; Massafferri, A.; de Miranda, J.M.; Pepe, I.M.; Polycarpo, E.; dos Reis, A.C.; /Rio de Janeiro, CBPF; Carrillo, S.; Casimiro, E.; Cuautle, E.; Sanchez-Hernandez, A.; Uribe, C.; Vazquez, F.; /CINVESTAV, IPN; Agostino, L.; Cinquini, L.; Cumalat,; /Colorado U. /Fermilab /Frascati /Guanajuato U. /Illinois U., Urbana /Indiana U. /Korea U. /Kyungpook Natl. U. /INFN, Milan /Milan U. /North Carolina U. /Pavia U. /INFN,

2005-09-01T23:59:59.000Z

237

E-Print Network 3.0 - aternate parameter values Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

aternate parameter values Search Powered by Explorit Topic List Advanced Search Sample search results for: aternate parameter values Page: << < 1 2 3 4 5 > >> 1 ONTOLOGICAL...

238

U-163: PHP Command Parameter Bug Lets Remote Users Obtain Potentially...  

Broader source: Energy.gov (indexed) [DOE]

63: PHP Command Parameter Bug Lets Remote Users Obtain Potentially Sensitive Information and Execute Arbitrary Code U-163: PHP Command Parameter Bug Lets Remote Users Obtain...

239

Sensitivity analysis of modeling parameters that affect the dual peaking behaviour in coalbed methane reservoirs.  

E-Print Network [OSTI]

??Coalbed methane reservoir (CBM) performance is controlled by a complex set of reservoir, geologic, completion and operational parameters and the inter-relationships between those parameters. Therefore… (more)

Okeke, Amarachukwu Ngozi

2006-01-01T23:59:59.000Z

240

Parameter estimation for models of ligninolytic and cellulolytic enzyme kinetics  

SciTech Connect (OSTI)

While soil enzymes have been explicitly included in the soil organic carbon (SOC) decomposition models, there is a serious lack of suitable data for model parameterization. This study provides well-documented enzymatic parameters for application in enzyme-driven SOC decomposition models from a compilation and analysis of published measurements. In particular, we developed appropriate kinetic parameters for five typical ligninolytic and cellulolytic enzymes ( -glucosidase, cellobiohydrolase, endo-glucanase, peroxidase, and phenol oxidase). The kinetic parameters included the maximum specific enzyme activity (Vmax) and half-saturation constant (Km) in the Michaelis-Menten equation. The activation energy (Ea) and the pH optimum and sensitivity (pHopt and pHsen) were also analyzed. pHsen was estimated by fitting an exponential-quadratic function. The Vmax values, often presented in different units under various measurement conditions, were converted into the same units at a reference temperature (20 C) and pHopt. Major conclusions are: (i) Both Vmax and Km were log-normal distributed, with no significant difference in Vmax exhibited between enzymes originating from bacteria or fungi. (ii) No significant difference in Vmax was found between cellulases and ligninases; however, there was significant difference in Km between them. (iii) Ligninases had higher Ea values and lower pHopt than cellulases; average ratio of pHsen to pHopt ranged 0.3 0.4 for the five enzymes, which means that an increase or decrease of 1.1 1.7 pH units from pHopt would reduce Vmax by 50%. (iv) Our analysis indicated that the Vmax values from lab measurements with purified enzymes were 1 2 orders of magnitude higher than those for use in SOC decomposition models under field conditions.

Wang, Gangsheng [ORNL; Post, Wilfred M [ORNL; Mayes, Melanie [ORNL; Frerichs, Joshua T [ORNL; Jagadamma, Sindhu [ORNL

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tox parameter tox" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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241

Multi-parameter Laser Modes in Paraxial Optics  

E-Print Network [OSTI]

We study multi-parameter solutions of the inhomogeneous paraxial wave equation in a linear and quadratic approximation which include oscillating laser beams in a parabolic waveguide, spiral light beams, and other important families of propagation-invariant laser modes in weakly varying media. A similar effect of superfocusing of particle beams in a thin monocrystal film is also discussed. In the supplementary electronic material, we provide a computer algebra verification of the results presented here, and of some related mathematical tools that were stated without proofs in the literature.

Christoph Koutschan; Erwin Suazo; Sergei K. Suslov

2014-07-09T23:59:59.000Z

242

Note: Characteristic beam parameter for the line electron gun  

SciTech Connect (OSTI)

We have optimized the beam parameters of line source electron gun using Stanford Linear Accelerator Centre electron beam trajectory program (EGUN), utilizing electrostatic focusing only. We measured minimum beam diameter as 0.5 mm that corresponds to power density of 68.9 kW/cm{sup 2} at 13.5 mm in the post-anode region which is more than two-fold (33 kW/cm{sup 2}), of the previously reported results. The gun was operated for the validation of the theoretical results and found in good agreement. The gun is now without any magnetic and electrostatic focusing thus much simpler and more powerful.

Iqbal, M. [Centre for High Energy Physics, University of the Punjab, Lahore 45590 (Pakistan) [Centre for High Energy Physics, University of the Punjab, Lahore 45590 (Pakistan); Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China); Islam, G. U. [Centre for High Energy Physics, University of the Punjab, Lahore 45590 (Pakistan)] [Centre for High Energy Physics, University of the Punjab, Lahore 45590 (Pakistan); Zhou, Z.; Chi, Y. [Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China)] [Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China)

2013-11-15T23:59:59.000Z

243

Signal processing for longitudinal parameters of the Tevatron beam  

SciTech Connect (OSTI)

We describe the system known as the Tevatron SBD [1] which is used to provide information on the longitudinal parameters of coalesced beam bunches in the Tevatron. The system has been upgraded over the past year with a new digitizer and improved software. The quantities provided for each proton and antiproton bunch include the intensity, the longitudinal bunch profile, the timing of the bunch with respect to the low-level RF, the momentum spread and the longitudinal emittance. The system is capable of 2 Hz operation and is run at 1 Hz.

Pordes, S.; Crisp, J.; Fellenz, B.; Flora, R.; Para, A.; Tollestrup, A.V.; /Fermilab

2005-05-01T23:59:59.000Z

244

The effect of soil parameters on earth penetration of projectiles  

E-Print Network [OSTI]

Constitutive Relationship for Earth Materials; 2& A Dynamic Elasto-Plastic Finite Element Analysis of Pro- jectile Penetration of a Half-Space; 3) The Dynamic Shearing Resistance of Clay as a Function of the Rate of Shear Deformation; 4) The Dynam...THE EFFECT OF SOIL PARAMETERS ON EARTH PENETRATION OF PROJECTILES A Thesis by George Harley Ferguson, I I I Submitted to the Graduate Col lege of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER...

Ferguson, George Harley

2012-06-07T23:59:59.000Z

245

Lindemann Parameters for solid Membranes focused on Carbon Nanotubes  

E-Print Network [OSTI]

Temperature fluctuations in the normal direction of planar crystals such as graphene are quite violent and may be expected to influence strongly their melting properties. In particular, they will modify the Lindemann melting criterium. We calculate this modification in a self-consistent Born approximation. The result is applied to graphene and its wrapped version represented by single-walled carbon nanotubes (SWNTs). It is found that the out-of-plane fluctuations dominate over the in-plane fluctuations. This makes strong restrictions to possible Lindemann parameters. Astonishing we find that these large out-of-plane fluctuations have only a small influence upon the melting temperature.

J. Dietel; H. Kleinert

2009-03-08T23:59:59.000Z

246

On the empirical statistics of parameter estimates in parametric modeling  

E-Print Network [OSTI]

FOR ESTIMATING HIGHLY DAMPED SINUSOIDAL SIGNALS IN ADDTIVE NOISE Page 4. 1 Introduction 4. 2 Eigenvector Method 4. 3 Weighted Least Squares Estimation of Damped Sinusoids Based on. Noise-Reduced Data 4. 3. 1 Noise Reduction with SVD 4. 3. 2 Weighted Least... Squares Method 4. 3. 3 Experimental Results 55 59 63 63 65 68 V CONCLUSIONS AND POSSIBLE EXTENSIONS REFERENCES 72 VITA 77 LIST OF TABLES Table 2. 1 The sample biases of the parameter estimates using Burg lattice method, in model one...

Zhu, Yao

1988-01-01T23:59:59.000Z

247

DEVELOPMENT OF VADOSE-ZONE HYDRAULIC PARAMETER VALUES  

SciTech Connect (OSTI)

Several approaches have been developed to establish a relation between the soil-moisture retention curve and readily available soil properties. Those relationships are referred to as pedotransfer functions. Described in this paper are the rationale, approach, and corroboration for use of a nonparametric pedotransfer function for the estimation of soil hydraulic-parameter values at the yucca Mountain area in Nevada for simulations of net infiltration. This approach, shown to be applicable for use at Yucca Mountain, is also applicable for use at the Hanford Site where the underlying data were collected.

ROGERS PM

2008-01-21T23:59:59.000Z

248

Outdoor PV Module Degradation of Current-Voltage Parameters: Preprint  

SciTech Connect (OSTI)

Photovoltaic (PV) module degradation rate analysis quantifies the loss of PV power output over time and is useful for estimating the impact of degradation on the cost of energy. An understanding of the degradation of all current-voltage (I-V) parameters helps to determine the cause of the degradation and also gives useful information for the design of the system. This study reports on data collected from 12 distinct mono- and poly-crystalline modules deployed at the National Renewable Energy Laboratory (NREL) in Golden, Colorado. Most modules investigated showed < 0.5%/year decrease in maximum power due to short-circuit current decline.

Smith, R. M.; Jordan, D. C.; Kurtz, S. R.

2012-04-01T23:59:59.000Z

249

Inhalation Exposure Input Parameters for the Biosphere Model  

SciTech Connect (OSTI)

This analysis is one of the technical reports that support the Environmental Radiation Model for Yucca Mountain, Nevada (ERMYN), referred to in this report as the biosphere model. ''Biosphere Model Report'' (BSC 2004 [DIRS 169460]) describes in detail the conceptual model as well as the mathematical model and its input parameters. This report documents development of input parameters for the biosphere model that are related to atmospheric mass loading and supports the use of the model to develop biosphere dose conversion factors (BDCFs). The biosphere model is one of a series of process models supporting the total system performance assessment (TSPA) for a Yucca Mountain repository. ''Inhalation Exposure Input Parameters for the Biosphere Model'' is one of five reports that develop input parameters for the biosphere model. A graphical representation of the documentation hierarchy for the biosphere model is presented in Figure 1-1 (based on BSC 2006 [DIRS 176938]). This figure shows the interrelationships among the products (i.e., analysis and model reports) developed for biosphere modeling and how this analysis report contributes to biosphere modeling. This analysis report defines and justifies values of atmospheric mass loading for the biosphere model. Mass loading is the total mass concentration of resuspended particles (e.g., dust, ash) in a volume of air. Mass loading values are used in the air submodel of the biosphere model to calculate concentrations of radionuclides in air inhaled by a receptor and concentrations in air surrounding crops. Concentrations in air to which the receptor is exposed are then used in the inhalation submodel to calculate the dose contribution to the receptor from inhalation of contaminated airborne particles. Concentrations in air surrounding plants are used in the plant submodel to calculate the concentrations of radionuclides in foodstuffs contributed from uptake by foliar interception. This report is concerned primarily with the physical attributes of airborne particulate matter, such as the airborne concentrations of particles and their sizes. The conditions of receptor exposure (duration of exposure in various microenvironments), breathing rates, and dosimetry of inhaled particulates are discussed in more detail in ''Characteristics of the Receptor for the Biosphere Model'' (BSC 2005 [DIRS 172827]).

M. Wasiolek

2006-06-05T23:59:59.000Z

250

Error estimates and specification parameters for functional renormalization  

SciTech Connect (OSTI)

We present a strategy for estimating the error of truncated functional flow equations. While the basic functional renormalization group equation is exact, approximated solutions by means of truncations do not only depend on the choice of the retained information, but also on the precise definition of the truncation. Therefore, results depend on specification parameters that can be used to quantify the error of a given truncation. We demonstrate this for the BCS–BEC crossover in ultracold atoms. Within a simple truncation the precise definition of the frequency dependence of the truncated propagator affects the results, indicating a shortcoming of the choice of a frequency independent cutoff function.

Schnoerr, David [Institute for Theoretical Physics, University of Heidelberg, D-69120 Heidelberg (Germany)] [Institute for Theoretical Physics, University of Heidelberg, D-69120 Heidelberg (Germany); Boettcher, Igor, E-mail: I.Boettcher@thphys.uni-heidelberg.de [Institute for Theoretical Physics, University of Heidelberg, D-69120 Heidelberg (Germany)] [Institute for Theoretical Physics, University of Heidelberg, D-69120 Heidelberg (Germany); Pawlowski, Jan M. [Institute for Theoretical Physics, University of Heidelberg, D-69120 Heidelberg (Germany) [Institute for Theoretical Physics, University of Heidelberg, D-69120 Heidelberg (Germany); ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung mbH, D-64291 Darmstadt (Germany); Wetterich, Christof [Institute for Theoretical Physics, University of Heidelberg, D-69120 Heidelberg (Germany)] [Institute for Theoretical Physics, University of Heidelberg, D-69120 Heidelberg (Germany)

2013-07-15T23:59:59.000Z

251

Effects of environmental parameters to total, quantum and classical correlations  

E-Print Network [OSTI]

We quantify the total, quantum, and classical correlations with entropic measures, and quantitatively compare these correlations in a quantum system, as exemplified by a Heisenberg dimer which is subjected to the change of environmental parameters: temperature and nonuniform external field. Our results show that the quantum correlation may exceed the classical correlation at some nonzero temperatures, though the former is rather fragile than the later under thermal fluctuation. The effect of the external field to the classical correlation is quite different from the quantum correlation.

Wen-Ling Chan; Jun-Peng Cao; Dong Yang; Shi-Jian Gu

2006-12-29T23:59:59.000Z

252

Effect of radio frequency discharge power on dusty plasma parameters  

SciTech Connect (OSTI)

The parameters of a two-dimensional dusty plasma consisting of six, 9 mum diameter particles trapped inside a radio frequency (rf) plasma sheath have been measured as a function of rf power in a 13.5 mtorr (1.8 Pa) argon discharge. The center-of-mass and breathing frequencies are found by projecting the cluster's Brownian motion onto the associated normal mode. The center-of-mass frequency (i.e., radial confinement) is insensitive to rf power. The Debye shielding parameter kappa, as found from the breathing frequency, increases from approx =0.5 to 2 as the square root of rf power. The Debye length decreases from approx =2.7 to 0.7 mm as the inverse of the square root of rf power. The average particle charge qapprox =-17 000e is effectively independent of rf power. These results are consistent with an electron temperature that is independent of rf power and an ion density that is directly proportional to rf power, where the Debye length is determined by the ion density in combination with the electron temperature.

Sheridan, T. E. [Department of Physics and Astronomy, Ohio Northern University, Ada, Ohio 45810 (United States)

2009-08-01T23:59:59.000Z

253

Optimization of Process Parameters for Si Lateral PIN Photodiode  

E-Print Network [OSTI]

Abstract: This paper is about four optimization factors of process parameters, namely the intrinsic region length, photoabsorption layer thickness, the incident optical power and the bias voltage in a Si lateral pin-photodiode so as to obtain high frequency response and responsivity. Optimization of these parameters is based on Taguchi optimization method. In terms of simulation for the fabrication and device electrical characterization, ATHENA and ATLAS software from Silvaco Int. were used respectively. The identified factors have three best levels which give different combination based on L9 orthogonal array by Taguchi optimization method. In order to find the optimum factors and levels, signal-to-noise ratios (SNR) of larger-the-better (LTB) was applied. The analysis showed that the entire identified factors gave significant effect on the optical properties of the Si lateral pin-photodiode. It is revealed that the best result for responsivity and frequency response after the optimization approaches were 0.62A/W and 13.1 GHz respectively which respond to the optimized value for intrinsic region length of 6 µm, photoabsorption layer thickness of 50 µm, incident optical 2 power of 1 mW/cm and bias voltage of 3 V. As a conclusion, the optimum solution in achieving the desired high speed photodiode was successfully predicted using Taguchi optimization method. Key words: Taguchi method Photodiode Lateral p-i-n Simulation Silvaco

P. S. Menon; S. Kalthom Tasirin; Ibrahim Ahmad; S. Fazlili Abdullah

254

Research on Characteristic Parameters of Coal-dust Explosion  

Science Journals Connector (OSTI)

The parameters of explosive characteristics of the coal-dust are assessed systematically with the test device of minimum ignition temperature of dust clouds and 20L sphere explosion test units. The minimum ignition temperature of dust is a main safety index when handling combustible dusts in industrial production, and while hazard evaluation, the maximum explosion pressure and the explosion index are key parameters. Five kinds of coal-dust with different particle diameters were tested in order to determine the temperature sensitivity and the ferocity under the given conditions, which can be used as the criteria to classify dust explosion hazards. The experiment results indicate that the minimum ignition temperature of coal-dust cloud reduces with the decrease of particle diameter under temperature of (293±5) K and powder spraying pressure of 0.08MPa, and when the particle size reduces to (25-48) ?m, the minimum ignition temperature is between (793-803)K; Besides that, the results can also show that minimum explosive concentration of coal-dust cloud is between 20 gám-3 and 30 gám-3under temperature of (293±5) K, powder spraying pressure of 2MPa and ignition energy of 10kJ, the maximum explosion pressure is 0.45MPa and the maximum explosion index is 11.14 MPaámás-1, which classifies coal-dust explosion hazards to Level I. The conclusions drawn from the experimental results are of great significance to the safe application of these combustible substances.

Weiguo Cao; Liyuan Huang; Jianxin Zhang; Sen Xu; Shanshan Qiu; Feng Pan

2012-01-01T23:59:59.000Z

255

Multi-parameter on-line coal bulk analysis  

SciTech Connect (OSTI)

This was a four-year grant that was given a no cost extension for one more year. The purpose of the grant was to develop a pulsed neutron-based technique that could measure on-line all the major and minor elements in coal. Such measurements would allow the continuous monitoring of bulk parameters such as coal heating value (BTU/lb), volatile matter, moisture etc., deemed important to the coal industry. Such parameters, along with the continuous measurement of elements such as sulfur and sodium, are of major economic and environmental concern, and their measurement would assist in a more efficient use of the coal-fired boilers, as well as limiting emissions controlled by the 1990 Clean Air Act Amendments. It was hoped that this study would lead to the development of a technique able to create a marketable product, an On-Line Elemental Coal Analyzer. The study was separated in the following major parts: (1) Devise an efficient system for the detection of gamma rays; (2) Prior to experimentation, perform modeling and simulations for items such as detector shielding, coal sample configuration, and neutron tube collimation; (3) Develop a computer code for data reduction and analysis; (4) Measure the elemental composition of various coal samples; and (5) Design a prototype, on-line elemental coal analyzer, based on the PFTNA principle.

NONE

1999-02-01T23:59:59.000Z

256

Supergravity, complex parameters and the Janis-Newman algorithm  

E-Print Network [OSTI]

The Demia\\'nski-Janis-Newman algorithm is an original solution generating technique. For a long time it has been limited to producing rotating solutions, restricting to the case of a metric and real scalar fields, despite the fact that Demia\\'nski extended it to include more parameters such as a NUT charge. Recently two independent prescriptions have been given for extending the algorithm to gauge fields and thus electrically charged configurations. In this paper we aim to end setting up the algorithm by providing a missing but important piece, which is how the transformation is applied to complex scalar fields. We illustrate our proposal through several examples taken from N=2 supergravity, including the stationary BPS solutions from Behrndt et al. and Sen's axion-dilaton rotating black hole. Moreover we discuss solutions that include pairs of complex parameters, such as the mass and the NUT charge, or the electric and magnetic charges, and we explain how to perform the algorithm in this context (with the ex...

Erbin, Harold

2015-01-01T23:59:59.000Z

257

Deconvolution of mixed gamma emitters using peak parameters  

SciTech Connect (OSTI)

When evaluating samples containing mixtures of nuclides using gamma spectroscopy the situation sometimes arises where the nuclides present have photon emissions that cannot be resolved by the detector. An example of this is mixtures of {sup 241}Am and plutonium that have L x-ray emissions with slightly different energies which cannot be resolved using a high-purity germanium detector. It is possible to deconvolute the americium L x-rays from those plutonium based on the {sup 241}Am 59.54 keV photon. However, this requires accurate knowledge of the relative emission yields. Also, it often results in high uncertainties in the plutonium activity estimate due to the americium yields being approximately an order of magnitude greater than those for plutonium. In this work, an alternative method of determining the relative fraction of plutonium in mixtures of {sup 241}Am and {sup 239}Pu based on L x-ray peak location and shape parameters is investigated. The sensitivity and accuracy of the peak parameter method is compared to that for conventional peak decovolution.

Gadd, Milan S [Los Alamos National Laboratory; Garcia, Francisco [Los Alamos National Laboratory; Magadalena, Vigil M [Los Alamos National Laboratory

2011-01-14T23:59:59.000Z

258

Biases on cosmological parameter estimators from galaxy cluster number counts  

E-Print Network [OSTI]

Sunyaev-Zel'dovich (SZ) surveys are promising probes of cosmology - in particular for Dark Energy (DE) -, given their ability to find distant clusters and provide estimates for their mass. However, current SZ catalogs contain tens to hundreds of objects and maximum likelihood estimators may present biases for such sample sizes. In this work we use the Monte Carlo approach to determine the presence of bias on cosmological parameter estimators from cluster abundance as a function of the area and depth of the survey, and the number of cosmological parameters fitted. Assuming perfect knowledge of mass and redshift some estimators have non-negligible biases. For example, the bias of $\\sigma_8$ corresponds to about $40%$ of its statistical error bar when fitted together with $\\Omega_c$ and $w_0$. Including a SZ mass-observable relation decreases the relevance of the bias, for the typical sizes of current surveys. The biases become negligible when combining the SZ data with other cosmological probes. However, we show that the biases from SZ estimators do not go away with increasing sample sizes and they may become the dominant source of error for an all sky survey at the South Pole Telescope (SPT) sensitivity. The results of this work validate the use of the current maximum likelihood methods for present SZ surveys, but highlight the need for further studies for upcoming experiments. [abridged

M. Penna-Lima; M. Makler; C. A. Wuensche

2013-12-16T23:59:59.000Z

259

Baseline 18F-FDG PET image derived parameters for therapy response prediction in oesophageal cancer  

E-Print Network [OSTI]

parameter and response was investigated using Kruskal-Wallis tests and receiver operating characteristic

Paris-Sud XI, Université de

260

Key parameters influencing the performance of photocatalytic oxidation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Key parameters influencing the performance of photocatalytic oxidation Key parameters influencing the performance of photocatalytic oxidation (PCO) air purification under realistic indoor conditions Title Key parameters influencing the performance of photocatalytic oxidation (PCO) air purification under realistic indoor conditions Publication Type Journal Article Year of Publication 2012 Authors Destaillats, Hugo, Mohamad Sleiman, Douglas P. Sullivan, Catherine Jacquiod, Jean Sablayrolles, and Laurent Molins Journal Applied Catalysis B: Environmental Volume 128 Pagination 159-170 Date Published 11/30/2012 Abstract Photocatalytic oxidation (PCO) air cleaning is a promising technology suitable for the elimination of a broad range of volatile organic compounds (VOCs). However, performance of poorly designed PCO systems may be affected by the formation of volatile aldehydes and other partially oxidized byproducts. This study explored the role of key design and dimensioning parameters that influence the effective removal of primary pollutants and can help reduce or eliminate the formation of secondary byproducts. A model pollutant mixture containing benzene, toluene, o-xylene, undecane, 1-butanol, formaldehyde and acetaldehyde was introduced at a constant rate in a 20-m3 environmental chamber operating at an air exchange rate of 1 h-1. Individual pollutant concentrations were kept at realistically low levels, between 2 and 40 μg m-3. A prototype air cleaner provided with flat or pleated PCO filtering media was operated in an external ductwork loop that recirculated chamber air at flow rates in the range 178-878 m3 h-1, corresponding to recycle ratios between 8.5 and 38. Air samples were collected upstream and downstream of the air cleaner and analyzed off-line to determine single-pass removal efficiency. The final-to-initial chamber concentration ratio was used to determine the global chamber removal efficiency for each pollutant. In the flat filter configuration, longer dwelling times of compounds on the TiO2 surface were attained by reducing the recirculation airflow by a factor of ∼5, leading to increasing total pollutant removal efficiency from 5% to 44%. Net acetaldehyde and formaldehyde removal was achieved, the later at airflow rates below 300 m3 h-1, illustrating the critical importance of controlling the contact time of primary and secondary pollutants with the TiO2 surface. The use of pleated media was shown to increase significantly the system performance by extending the dwelling time of pollutants on the irradiated surface of the PCO media, with a 70% degradation of target pollutants. With the pleated media, formaldehyde removal efficiency increased to 60%. Irradiation using either a UVC or a UVA lamp under identical flow conditions produced similar pollutant elimination. A simple correlation between the steady-state single pass removal efficiency and the global chamber removal efficiency was used to rationalize these experimental results and identify optimal operating conditions.

Note: This page contains sample records for the topic "tox parameter tox" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Performance Parameters for Grid-Connected PV Systems  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

National Renewable Energy Laboratory National Renewable Energy Laboratory 1617 Cole Boulevard, Golden, Colorado 80401-3393 303-275-3000 * www.nrel.gov Operated for the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy by Midwest Research Institute * Battelle Contract No. DE-AC36-99-GO10337 B. Marion, J. Adelstein, and K. Boyle National Renewable Energy Laboratory H. Hayden, B. Hammond, T. Fletcher, B. Canada, and D. Narang Arizona Public Service Co. D. Shugar, H. Wenger, A. Kimber, and L. Mitchell PowerLight Corporation G. Rich and T. Townsend First Solar Prepared for the 31 st IEEE Photovoltaics Specialists Conference and Exhibition Lake Buena Vista, Florida January 3-7, 2005 February 2005 * NREL/CP-520-37358 Performance Parameters for Grid-Connected PV Systems

262

SNS Parameters List - SNS 100000000-PL0001-R13  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

5 5 SNS 100000000-PL0001-R13 SNS Parameters List This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States government or any agency thereof. The views and

263

Study of Fuzzy based Classifier Parameter across Spatial Resolution  

E-Print Network [OSTI]

Classification and interpretation of satellite images are complex processes and that may be affected by various factors. Most fuzzy based soft classification techniques have been used to provide a more appropriate and accurate area estimation when fine, medium and coarse spatial resolution data are being used. Spatial resolution determines the spatial details on the Earth surface and greatly reduces the problem of mixed pixel. This paper examines the effect of weighting exponent „m ? parameter of fuzzy c-means (FCM) and possibilistic c-mean (PCM) classifiers with respect to entropy, an uncertainty indicator for different extracted classes. This paper measures uncertainty variations across spatial resolution for different class extraction. Uncertainty can be defined as skepticism wherein entropy is an absolute indicator of an

Rakesh Dwivedi; S. K. Ghosh

264

Thermo-Mechanical Processing Parameters for the INCONEL ALLOY 740  

SciTech Connect (OSTI)

In 2000, a Cooperative Research and Development Agreement (CRADA) was undertaken between the Oak Ridge National Laboratory (ORNL) and the Special Metals Corporation (SMC) to determine the mechanical property response of the IN740 alloy to help establish thermo-mechanical processing parameters for the use of this alloy in supercritical and ultra-critical boiler tubes with the potential for other end uses. SMC had developed an alloy, commercially known as INCONEL alloy 740, which exhibited various beneficial physical, mechanical, and chemical properties. As part of SMC's on-going efforts to optimize this alloy for targeted boiler applications there was a need to develop an understanding of the thermo-mechanical response of the material, characterize the resulting microstructure from this processing, and possibly, utilize models to develop the appropriate processing scheme for this product.

Ludtka, G.M.; Smith, G.

2007-11-19T23:59:59.000Z

265

A fixed-parameter algorithm for the vertex cover problem  

Science Journals Connector (OSTI)

Abstract A subset F of vertices of a graph G is called a vertex cover P t set if every path of order t in G contains at least one vertex from F. Denote by ? t ( G ) the minimum cardinality of a vertex cover P t set in G. The vertex cover P t ( VCP t ) problem is to find a minimum vertex cover P t set. The VCP t problem is NP-hard for any integer t ? 2 . In this paper, we restrict our attention to the VCP 3 problem and present a fixed-parameter algorithm with runtime O ( 2 k k 3.376 + n 4 m ) for the VCP 3 problem. Here, n denotes the number of vertices, m denotes the number of the edges, k denotes the size of the vertex cover P 3 set searched for.

Jianhua Tu

2014-01-01T23:59:59.000Z

266

Substitutional B in Si: Accurate lattice parameter determination  

SciTech Connect (OSTI)

In this work the lattice deformation induced by substitutional B in Si is carefully determined by using different experimental techniques. The investigated Si{sub 1-x}B{sub x}/Si layers x=(0.0012 divide 0.005) are grown by solid phase epitaxy of B-implanted preamorphized Si and by molecular beam epitaxy. Nuclear reaction analysis both in random and in channeling geometry, secondary ion mass spectrometry and high resolution x-ray diffraction allow to quantify the total amount of B and its lattice location, the B depth profile and the B-doped Si lattice parameter, respectively. The reasons for the large spread present in the data reported so far in literature are discussed. Our results, thanks to the synergy of the earlier techniques, lead to a significantly more accurate strain determination, that is in agreement with very recent ab initio theoretical calculations.

Bisognin, G.; De Salvador, D.; Napolitani, E.; Berti, M.; Carnera, A.; Mirabella, S.; Romano, L.; Grimaldi, M. G.; Priolo, F. [MATIS CNR-INFM and Dipartimento di Fisica, Universita di Padova, via Marzolo 8, 35131 Padova (Italy); MATIS CNR-INFM and Dipartimento di Fisica ed Astronomia, Universita di Catania, via S. Sofia 64, 95123 Catania (Italy)

2007-05-01T23:59:59.000Z

267

Estimation of the parameters in the generalized gamma distribution  

E-Print Network [OSTI]

are printed out. C PROGRAM } ~ ESTIMATION OF PARAMETERS OF GENERALIZED GAMMA DISTRIBUTION C DIMENSION XO(500 ) eEPT(500) eFREQ (500) ePT& 500) ekF(500) ~ XN(500 ') DI MENS ION X & 2e 500 ) ~ S ( 2e 3) e Y (3 ~ '500 ) e TFREQ (3e 500 ) ~ SUMX (2 ) READ (5 e...+I )/TFREQ(2? I I ) ) Y C 3 ? I - I ) ~ALOG ( TFREO I 3 ~ I+I ) /TFREQ (3 ~ 1-1 ) ) WRITE(6?652) 81 L~LI ~ I 0~EXP(ALPHA) OS~OCH)2 ~ WRITE(6 ~ 300) FORMATtlHI ~ 46X?27HGENERALIZED GAMMA VARIABLES)r WRITE(6?301 ) (XN( J) ?J?:I )N) FORMAT( I 0 (9X? IOFI...

Collins, Claude Ann

2012-06-07T23:59:59.000Z

268

Design parameters for acoustical treatments in a subway station renovation  

Science Journals Connector (OSTI)

Acoustical treatments have been incorporated into the design of renovations in the Essex Street MBTA Station in Boston. Criteria were developed relating to noise reduction from train noise on the platform and sound isolation between northbound and southbound sides of the station. This paper discusses the limitations on acoustical treatments imposed by the functional and structural restraints of the station including the availability of surfaces to be treated safety access requirements maintenance and durability restrictions and architectural goals relating to aesthetics lighting and textures. The presentation focuses on the manner in which the acoustical consultant and architect responded to each other's goals and the way that conflicts were resolved. Measurements were made of existing acoustical parameters. The renovations are presently under construction.

Carl J. Rosenberg; Neville A. Powers; Allen M. Lieb

1976-01-01T23:59:59.000Z

269

Simulation and analysis of VIM measurements: feedback on design parameters  

E-Print Network [OSTI]

The Visible-light Imager and Magnetograph (VIM) proposed for the ESA Solar Orbiter mission will observe a photospheric spectral line at high spatial resolution. Here we simulate and interpret VIM measurements. Realistic MHD models are used to synthesize "observed" Stokes profiles of the photospheric Fe I 617.3 nm line. The profiles are degraded by telescope diffraction and detector pixel size to a spatial resolution of 162 km on the solar surface. We study the influence of spectral resolving power, noise, and limited wavelength sampling on the vector magnetic fields and line-of-sight velocities derived from Milne-Eddington inversions of the simulated measurements. VIM will provide reasonably accurate values of the atmospheric parameters even with filter widths of 120 mA and 3 wavelength positions plus continuum, as long as the noise level is kept below 10^-3 I_c.

Suarez, D O; Vargas, S; Bonet, J A; Pillet, V M; Del Toro-Iniesta, Jose Carlos

2006-01-01T23:59:59.000Z

270

Simulation and analysis of VIM measurements: feedback on design parameters  

E-Print Network [OSTI]

The Visible-light Imager and Magnetograph (VIM) proposed for the ESA Solar Orbiter mission will observe a photospheric spectral line at high spatial resolution. Here we simulate and interpret VIM measurements. Realistic MHD models are used to synthesize "observed" Stokes profiles of the photospheric Fe I 617.3 nm line. The profiles are degraded by telescope diffraction and detector pixel size to a spatial resolution of 162 km on the solar surface. We study the influence of spectral resolving power, noise, and limited wavelength sampling on the vector magnetic fields and line-of-sight velocities derived from Milne-Eddington inversions of the simulated measurements. VIM will provide reasonably accurate values of the atmospheric parameters even with filter widths of 120 mA and 3 wavelength positions plus continuum, as long as the noise level is kept below 10^-3 I_c.

D. Orozco Suarez; L. R. Bellot Rubio; S. Vargas Dominguez; J. A. Bonet; V. Martinez Pillet; J. C. del Toro Iniesta

2006-11-14T23:59:59.000Z

271

Neutrino parameters and the $N_2$-dominated scenario of leptogenesis  

E-Print Network [OSTI]

We briefly review the main aspects of leptogenesis, describing both the unflavoured and the flavoured versions of the $N_2$-dominated scenario. A study of the success rates of both classes of models has been carried out. We comment on these results and discuss corrective effects to this simplest scenario. Focusing on the flavoured case, we consider the conditions required by strong thermal leptogenesis, where the final asymmetry is fully independent of the initial conditions. Barring strong cancellations in the seesaw formula and in the flavoured decay parameters, we show that strong thermal leptogenesis favours a lightest neutrino mass $m_1\\gtrsim10\\,\\mbox{meV}$ for normal ordering (NO) and $m_1\\gtrsim 3\\,\\mbox{meV}$ for inverted ordering (IO). Finally, we briefly comment on the power of absolute neutrino mass scale experiments to either support or severely corner strong thermal leptogenesis.

Michele Re Fiorentin; Sophie E. King

2014-05-09T23:59:59.000Z

272

The impact of cement parameters on Delayed Ettringite Formation  

Science Journals Connector (OSTI)

Delayed Ettringite Formation (DEF) in concrete is likely to lead to swelling and cracking in structures which have undergone early age heating to a temperature of over 65 °C. Application of a method that accelerates this process has made it possible to study the impact of cement properties on DEF. For two temperatures reached by the concrete (75 °C or 85 °C), the study considers a domain defined by the sulphate content [2.6–3.6%], the alkali content [0.5–1%] and the Blaine specific area [3330–4635 cm2/g] of the cement. The impact of these parameters and the interactions between them on swelling are discussed. Monitoring of the dynamic elastic modulus of the concretes shows that this property may be reduced by DEF, but that it may increase again once the swelling process has ceased, probably due to the gradual filling of voids by ettringite formed under conditions of limited supersaturation.

A. Pavoine; X. Brunetaud; L. Divet

2012-01-01T23:59:59.000Z

273

Consistent set of nuclear parameters values for absolute INAA  

SciTech Connect (OSTI)

Gamma spectral analysis of irradiated material can be used to determine absolute disintegration rates for specific radionuclides. These data, together with measured values for the thermal and epithermal neutron fluxes, and irradiation, cooling and counting time values, are all the experimental information required to do absolute Instrumental Neutron Activation Analysis. The calculations required to go from product photon emission rate to target nuclide amount depend upon values used for the thermal neutron capture cross-section, the resonance absorption integral, the half-life and photon branching ratios. Values for these parameters were determined by irradiating and analyzing a series of elemental standards. The results of these measurements were combined with values reported by other workers to arrive at a set of recommended values for the constants. Values for 114 nuclides are listed.

Heft, R.E.

1980-01-01T23:59:59.000Z

274

Focused Ion Beam Induced Effects on MOS Transistor Parameters  

SciTech Connect (OSTI)

We report on recent studies of the effects of 50 keV focused ion beam (FIB) exposure on MOS transistors. We demonstrate that the changes in value of transistor parameters (such as threshold voltage, V{sub t}) are essentially the same for exposure to a Ga+ ion beam at 30 and 50 keV under the same exposure conditions. We characterize the effects of FIB exposure on test transistors fabricated in both 0.5 {micro}m and 0.225 {micro}m technologies from two different vendors. We report on the effectiveness of overlying metal layers in screening MOS transistors from FIB-induced damage and examine the importance of ion dose rate and the physical dimensions of the exposed area.

Abramo, Marsha T.; Antoniou, Nicholas; Campbell, Ann N.; Fleetwood, Daniel M.; Hembree, Charles E.; Jessing, Jeffrey R.; Soden, Jerry M.; Swanson, Scot E.; Tangyunyong, Paiboon; Vanderlinde, William E.

1999-07-28T23:59:59.000Z

275

CONSTRAINING THE SYMMETRY PARAMETERS OF THE NUCLEAR INTERACTION  

SciTech Connect (OSTI)

One of the major uncertainties in the dense matter equation of state has been the nuclear symmetry energy. The density dependence of the symmetry energy is important in nuclear astrophysics, as it controls the neutronization of matter in core-collapse supernovae, the radii of neutron stars and the thicknesses of their crusts, the rate of cooling of neutron stars, and the properties of nuclei involved in r-process nucleosynthesis. We show that fits of nuclear masses to experimental masses, combined with other experimental information from neutron skins, heavy ion collisions, giant dipole resonances, and dipole polarizabilities, lead to stringent constraints on parameters that describe the symmetry energy near the nuclear saturation density. These constraints are remarkably consistent with inferences from theoretical calculations of pure neutron matter, and, furthermore, with astrophysical observations of neutron stars. The concordance of experimental, theoretical, and observational analyses suggests that the symmetry parameters S{sub v} and L are in the range 29.0-32.7 MeV and 40.5-61.9 MeV, respectively, and that the neutron star radius, for a 1.4 M{sub Sun} star, is in the narrow window 10.7 km

Lattimer, James M. [Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794-3800 (United States); Lim, Yeunhwan, E-mail: james.lattimer@stonybrook.edu, E-mail: yeunhwan.lim@gmail.com [Department of Physics Education, Daegu University, Gyeongsan 712-714 (Korea, Republic of)

2013-07-01T23:59:59.000Z

276

Standard model parameters and the search for new physics  

SciTech Connect (OSTI)

In these lectures, my aim is to present an up-to-date status report on the standard model and some key tests of electroweak unification. Within that context, I also discuss how and where hints of new physics may emerge. To accomplish those goals, I have organized my presentation as follows: I discuss the standard model parameters with particular emphasis on the gauge coupling constants and vector boson masses. Examples of new physics appendages are also briefly commented on. In addition, because these lectures are intended for students and thus somewhat pedagogical, I have included an appendix on dimensional regularization and a simple computational example that employs that technique. Next, I focus on weak charged current phenomenology. Precision tests of the standard model are described and up-to-date values for the Cabibbo-Kobayashi-Maskawa (CKM) mixing matrix parameters are presented. Constraints implied by those tests for a 4th generation, supersymmetry, extra Z/prime/ bosons, and compositeness are also discussed. I discuss weak neutral current phenomenology and the extraction of sin/sup 2/ /theta//sub W/ from experiment. The results presented there are based on a recently completed global analysis of all existing data. I have chosen to concentrate that discussion on radiative corrections, the effect of a heavy top quark mass, and implications for grand unified theories (GUTS). The potential for further experimental progress is also commented on. I depart from the narrowest version of the standard model and discuss effects of neutrino masses and mixings. I have chosen to concentrate on oscillations, the Mikheyev-Smirnov- Wolfenstein (MSW) effect, and electromagnetic properties of neutrinos. On the latter topic, I will describe some recent work on resonant spin-flavor precession. Finally, I conclude with a prospectus on hopes for the future. 76 refs.

Marciano, W.J.

1988-04-01T23:59:59.000Z

277

Unifying parameter estimation and the Deutsch-Jozsa algorithm for continuous variables  

E-Print Network [OSTI]

We reveal a close relationship between quantum metrology and the Deutsch-Jozsa algorithm on continuous variable quantum systems. We develop a general procedure, characterized by two parameters, that unifies parameter estimation and the Deutsch-Jozsa algorithm. Depending on which parameter we keep constant, the procedure implements either the parameter estimation protocol or the Deutsch-Jozsa algorithm. The parameter estimation part of the procedure attains the Heisenberg limit and is therefore optimal. Due to the use of approximate normalizable continuous variable eigenstates the Deutsch-Jozsa algorithm is probabilistic. The procedure estimates a value of an unknown parameter and solves the Deutsch-Jozsa problem without the use of any entanglement.

Marcin Zwierz; Carlos A. Pérez-Delgado; Pieter Kok

2010-08-19T23:59:59.000Z

278

Probing Neutrino Oscillation Parameters using High Power Superbeam from ESS  

E-Print Network [OSTI]

A high-power neutrino superbeam experiment at the ESS facility has been proposed such that the source-detector distance falls at the second oscillation maximum, giving very good sensitivity to the measurement of CP violation. In this work, we explore the comparative physics reach of the experiment in terms of leptonic CP-violation, precision on atmospheric parameters, non-maximal theta23, and its octant for a variety of choices for the baselines. We also vary the neutrino vs. the anti-neutrino running time for the beam, and study its impact on the physics goals of the experiment. We find that for the determination of CP violation, 540 km baseline with 7 years of neutrino and 3 years of anti-neutrino (7nu+3nubar) run-plan performs the best and one expects a 4sigma sensitivity to CP violation for 59% of true values of deltaCP. The projected reach for the 200 km baseline with 7nu+3nubar run-plan is somewhat worse with 4sigma sensitivity for 51% of true values of deltaCP. On the other hand, for the discovery of a...

Agarwalla, Sanjib Kumar; Prakash, Suprabh

2014-01-01T23:59:59.000Z

279

Advanced steam parameters for pulverized coal fired boilers  

SciTech Connect (OSTI)

After the enormous efforts made in the eighties towards minimization of pollutant concentration in flue gases from power stations, public attention today has turned increasingly toward CO{sub 2} emissions from fossil fuel fired plants. This interest has, in turn, renewed interest in increasing the efficiency of thermal power plants, as this approach is by far the most practical means of reducing the specific CO{sub 2} emission rate. The Rankine steam cycle is the workhorse of the power industry. However, the steam power cycle is often regarded as having reached a maximum practical efficiency, and development effort has shifted to indirect fired cycles. In reality, Rankine cycle efficiencies equivalent to the combined Brayton/Rankine cycles are possible, and may be economically practical. The development work which would allow such steam cycle efficiencies to be realized has been limited in recent years, due to low growth rates, falling energy prices, and tying up of investment funds in environmental control equipment. This paper presents a short survey of the application for advanced steam parameters in power generation and discusses critical areas in more detail. A program undertaken by a consortium of European manufacturers and EC governments for the advancement of steam cycle efficiency is described.

Heiermann, G.; Husemann, R.U.; Kather, A.; Knizia, M.; Hougaard, P.

1996-12-31T23:59:59.000Z

280

Derivation of Delaware Bay tidal parameters from space shuttle photography  

SciTech Connect (OSTI)

The tide-related parameters of the Delaware Bay are derived from space shuttle time-series photographs. The water areas in the bay are measured from interpretation maps of the photographs with a CALCOMP 9100 digitizer and ERDAS Image Processing System. The corresponding tidal levels are calculated using the exposure time annotated on the photographs. From these data, an approximate function relating the water area to the tidal level at a reference point is determined. Based on the function, the water areas of the Delaware Bay at mean high water (MHW) and mean low water (MLW), below 0 m, and for the tidal zone are inferred. With MHW and MLW areas and the mean tidal range, the authors calculate the tidal influx of the Delaware Bay, which is 2.76 x 1O[sup 9] m[sup 3]. Furthermore, the velocity of flood tide at the bay mouth is determined using the tidal flux and an integral of the velocity distribution function at the cross section between Cape Henlopen and Cape May. The result is 132 cm/s, which compares well with the data on tidal current charts.

Zheng, Quanan; Yan, Xiaohai; Klemas, V. (Univ. of Delaware, Newark (United States))

1993-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "tox parameter tox" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Photon interaction parameters of some spin ice compound materials  

Science Journals Connector (OSTI)

Spin ice compounds (SICs) are the frustrated magnetic materials which are used in nuclear reactor control system and semiconductor electronic circuits. Photon interaction parameters such as the effective atomic number, Zeff, and the effective electron density, Neff, for SICs such as Dy2Ti2O7, Dy2Sn2O7, Ho2Ti2O7 and Ho2Sn2O7 have been computed at photon energies from 10 keV to 100 GeV. The Zeff of the spin ice compounds is approximately constant in energy range 0.3–4 MeV where Compton scattering is the main photon interaction process. The Zeff increases sharply below 0.3 MeV due to photoelectric absorption process and above 3 MeV due to pair-production process. The well type structures of Zeff and Neff for HSO and DSO have been observed in the photon energy range 30-60 keV due to involvement of k-shell electron in the interaction. Dy2Sn2O7 and Ho2Sn2O7 are suitable materials for gamma shielding.

Vishwanath P. Singh; N.M. Badiger

2012-01-01T23:59:59.000Z

282

Plasma parameters of an active cathode during relativistic magnetron operation  

SciTech Connect (OSTI)

The results of time- and space-resolved spectroscopic studies of the plasma produced at the surface of the ferroelectric cathode during the operation of an S-band relativistic magnetron generating approx50 MW microwave power at f=3005 MHz and powered by a linear induction accelerator (LIA) (150 kV, 1.5 kA, 250 ns) are presented. The surface plasma was produced by a driving pulse (3 kV, 150 ns) prior to the application of the LIA accelerating high-voltage pulse. The cathode plasma electron density and temperature were obtained by analyzing hydrogen H{sub a}lpha and H{sub b}eta, and carbon ions CII and CIII spectral lines, and using the results of nonstationary collision radiative modeling. It was shown that the microwave generation causes an increase in plasma ion and electron temperature up to approx4 and approx7 eV, respectively, and the plasma density increases up to approx7x10{sup 14} cm{sup -3}. Estimates of the plasma transport parameters and its interaction with microwave radiation are also discussed.

Hadas, Y.; Kweller, T.; Sayapin, A.; Krasik, Ya. E. [Department of Physics, Technion, Haifa 32000 (Israel); Bernshtam, V. [Department of Physics, Weizmann Institute of Sciences, 61000 Rehovot (Israel)

2009-09-15T23:59:59.000Z

283

Mean- Field Approximation and a Small Parameter in Turbulence Theory  

E-Print Network [OSTI]

Numerical and physical experiments on two-dimensional (2d) turbulence show that the differences of transverse components of velocity field are well described by a gaussian statistics and Kolmogorov scaling exponents. In this case the dissipation fluctuations are irrelevant in the limit of small viscosity. In general, one can assume existence of critical space-dimensionality $d=d_{c}$, at which the energy flux and all odd-order moments of velocity difference change sign and the dissipation fluctuations become dynamically unimportant. At $d', leading to the observed gaussian statistics and Kolmogorov scaling of transverse velocity differences. It is shown that in the vicinity of $d=d_{c}$ the ratio of the relaxation and translation characteristic times decreases to zero, thus giving rise to a small parameter of the theory. The expressions for pressure and dissipation contributions to the exact equation for the generating function of transverse velocity differences are derived in the vicinity of $d=d_{c}$. The resulting equation describes experimental data on two-dimensional turbulence and demonstrate onset of intermittency as $d-d_{c}>0$ and $r/L\\to 0$ in three-dimensional flows in close agreement with experimental data. In addition, some new exact relations between correlation functions of velocity differences are derived. It is also predicted that the single-point pdf of transverse velocity difference in developing as well as in the large-scale stabilized two-dimensional turbulence is a gaussian.

Victor Yakhot

2000-01-13T23:59:59.000Z

284

Accurate parameters of 93 solar-type Kepler targets  

E-Print Network [OSTI]

We present a detailed spectroscopic study of 93 solar-type stars that are targets of the NASA/Kepler mission and provide detailed chemical composition of each target. We find that the overall metallicity is well-represented by Fe lines. Relative abundances of light elements (CNO) and alpha-elements are generally higher for low-metallicity stars. Our spectroscopic analysis benefits from the accurately measured surface gravity from the asteroseismic analysis of the Kepler light curves. The log g parameter is known to better than 0.03 dex and is held fixed in the analysis. We compare our Teff determination with a recent colour calibration of V-K (TYCHO V magnitude minus 2MASS Ks magnitude) and find very good agreement and a scatter of only 80 K, showing that for other nearby Kepler targets this index can be used. The asteroseismic log g values agree very well with the classical determination using Fe1-Fe2 balance, although we find a small systematic offset of 0.08 dex (asteroseismic log g values are lower). The ...

Bruntt, H; Smalley, B; Chaplin, W J; Verner, G A; Bedding, T R; Catala, C; Gazzano, J -C; Molenda-Zakowicz, J; Thygesen, A O; Uytterhoeven, K; Hekker, S; Huber, D; Karoff, C; Mathur, S; Mosser, B; Appourchaux, T; Campante, T L; Elsworth, Y; Garcia, R A; Handberg, R; Metcalfe, T S; Quirion, P -O; Regulo, C; Roxburgh, I W; Stello, D; Christensen-Dalsgaard, J; Kawaler, S D; Kjeldsen, H; Morris, R L; Quintana, E V; Sanderfer, D T

2012-01-01T23:59:59.000Z

285

Relativistic Nuclear Energy Density Functionals: adjusting parameters to binding energies  

E-Print Network [OSTI]

We study a particular class of relativistic nuclear energy density functionals in which only nucleon degrees of freedom are explicitly used in the construction of effective interaction terms. Short-distance (high-momentum) correlations, as well as intermediate and long-range dynamics, are encoded in the medium (nucleon density) dependence of the strength functionals of an effective interaction Lagrangian. Guided by the density dependence of microscopic nucleon self-energies in nuclear matter, a phenomenological ansatz for the density-dependent coupling functionals is accurately determined in self-consistent mean-field calculations of binding energies of a large set of axially deformed nuclei. The relationship between the nuclear matter volume, surface and symmetry energies, and the corresponding predictions for nuclear masses is analyzed in detail. The resulting best-fit parametrization of the nuclear energy density functional is further tested in calculations of properties of spherical and deformed medium-heavy and heavy nuclei, including binding energies, charge radii, deformation parameters, neutron skin thickness, and excitation energies of giant multipole resonances.

T. Niksic; D. Vretenar; P. Ring

2008-09-08T23:59:59.000Z

286

Design Parameters of a Miniaturized Piezoelectric Underwater Acoustic Transmitter  

SciTech Connect (OSTI)

The Juvenile Salmon Acoustic Telemetry System (JSATS) project supported by the U.S. Army Corps of Engineers, Portland District, has yielded the smallest acoustic fish tag transmitter commercially available to date. In order to study even smaller fish populations and make the transmitter injectable by needles, the JSATS acoustic micro transmitter needs to be further downsized. As part of the transmitter downsizing effort some of the design parameters of the lead zirconate titanate (PZT) ceramic tube transducer in the transmitter were studied, including the type of PZT, the backing material, the necessary drive voltage, the transmitting bandwidth and the length of the transducer. It was found that, to satisfy the 156-dB source level requirement of JSATS, a square wave with a 10-volt amplitude is required to drive 'soft' PZT transducers. PZT-5H demonstrated the best source level performance. For Navy types I and II, 16 volts or 18 volts were needed. Ethylene-propylene-diene monomer (EPDM) closed-cell foam was found to be the backing material providing the highest source level. The effect of tube length on the source level is also demonstrated in this paper, providing quantitative information for downsizing of small piezoelectric transmitters.

Li, Huidong; Deng, Zhiqun; Yuan, Yong; Carlson, Thomas J.

2012-07-02T23:59:59.000Z

287

WIPP shaft seal system parameters recommended to support compliance calculations  

SciTech Connect (OSTI)

The US Department of Energy plans to dispose of transuranic waste at the Waste Isolation Pilot Plant (WIPP), which is sited in southeastern New Mexico. The WIPP disposal facility is located approximately 2,150 feet (650 m) below surface in the bedded halite of the Salado Formation. Prior to initiation of disposal activities, the Department of Energy must demonstrate that the WIPP will comply with all regulatory requirements. Applicable regulations require that contaminant releases from the WIPP remain below specified levels for a period of 10,000 years. To demonstrate that the WIPP will comply with these regulations, the Department of Energy has requested that Sandia National Laboratories develop and implement a comprehensive performance assessment of the WIPP repository for the regulatory period. This document presents the conceptual model of the shaft sealing system to be implemented in performance assessment calculations conducted in support of the Compliance Certification Application for the WIPP. The model was developed for use in repository-scale calculations and includes the seal system geometry and materials to be used in grid development as well as all parameters needed to describe the seal materials. These calculations predict the hydrologic behavior of the system. Hence conceptual model development is limited to those processes that could impact the fluid flow through the seal system.

Hurtado, L.D.; Knowles, M.K. [Sandia National Labs., Albuquerque, NM (United States); Kelley, V.A.; Jones, T.L.; Ogintz, J.B. [INTERA Inc., Austin, TX (United States); Pfeifle, T.W. [RE/SPEC, Inc., Rapid City, SD (United States)

1997-12-01T23:59:59.000Z

288

Experimental critical parameters of plutonium metal cylinders flooded with water  

SciTech Connect (OSTI)

Forty-nine critical configurations are reported for experiments involving arrays of 3 kg plutonium metal cylinders moderated and reflected by water. Thirty-four of these describe systems assembled in the laboratory, while 15 others are derived critical parameters inferred from 46 subcritical cases. The arrays included 2x2xN, N = 2, 3, 4, and 5, in one program and 3x3x3 configurations in a later study. All were three-dimensional, nearly square arrays with equal horizontal lattice spacings but a different vertical lattice spacing. Horizontal spacings ranged from units in contact to 180 mm center-to-center; and vertical spacings ranged from about 80 mm to almost 400 mm center-to-center. Several nearly-equilateral 3x3x3 arrays exhibit an extremely sensitive dependence upon horizontal separation for identical vertical spacings. A line array of unreflected and essentially unmoderated canned plutonium metal units appeared to be well subcritical based on measurements made to assure safety during the manual assembly operations. All experiments were performed at two widely separated times in the mid-1970s and early 1980s under two programs at the Rocky Flats Plant`s Critical Mass Laboratory.

NONE

1996-07-01T23:59:59.000Z

289

An Advanced User Interface Approach for Complex Parameter Study Process Specification on the Information Power Grid  

Science Journals Connector (OSTI)

The creation of parameter study suites has recently become a more challenging problem as the parameter studies have become multi-tiered and the computational environment has become a supercomputer grid. The pa...

Maurice Yarrow; Karen M. McCann; Rupak Biswas…

2000-01-01T23:59:59.000Z

290

Control Of Electric Motor Parameters On The Basis Of Qr- Decomposition Technique  

Science Journals Connector (OSTI)

Control of DC motor on the basis of QR-decomposition technique is given in this paper. Authors propose to control DC motor parameter using step-by-step method of rotor’ s parameters definition. The first step ...

First A. Viktor Melnikov…

2008-01-01T23:59:59.000Z

291

Use Phase Parameter Variation and Uncertainty in LCA: Automobile Case Study  

Science Journals Connector (OSTI)

Product life cycle engineering studies typically rely on average use-phase parameter values to estimate impact, such as average usage intensity, and operational efficiency. In reality, these parameters can vary t...

Lynette Cheah

2013-01-01T23:59:59.000Z

292

Parameter estimation of coupled water and energy balance models based on stationary constraints of surface states  

E-Print Network [OSTI]

[1] We use a conditional averaging approach to estimate the parameters of a land surface water and energy balance model and then use the estimated parameters to partition net radiation into latent, sensible, and ground ...

Sun, Jian

293

Efficient Simulation, Accurate Sensitivity Analysis and Reliable Parameter Estimation for Delay Differential  

E-Print Network [OSTI]

Efficient Simulation, Accurate Sensitivity Analysis and Reliable Parameter Estimation for Delay 2009 by Hossein ZivariPiran #12;Abstract Efficient Simulation, Accurate Sensitivity Analysis for approximating the solution, performing a sensitivity analysis and estimating unknown parameters. In this thesis

Toronto, University of

294

Maximum-likelihood parameter estimation for unsupervised stochastic model-based image segmentation  

Science Journals Connector (OSTI)

An unsupervised stochastic model-based approach to image segmentation is described, and some of its properties investigated. In this approach, the problem of model parameter estimation is formulated as a problem of parameter estimation from incomplete ...

Jun Zhang; J. W. Modestino; D. A. Langan

1994-07-01T23:59:59.000Z

295

Lower limits of evaluation parameters for the lower Paleozoic Longmaxi shale gas in southern Sichuan Province  

Science Journals Connector (OSTI)

Here we present six key parameters that have been applied to evaluate the Silurian Longmaxi shale gas accumulations of southern Sichuan Province. These parameters ... include richness of organic matter, single la...

YanJun Li; Huan Liu; LieHui Zhang; ZongGang Lu; QiRong Li…

2013-05-01T23:59:59.000Z

296

WRAPHydro Data Model: Finding Input Parameters for the Water Rights Analysis Package  

E-Print Network [OSTI]

a new hydro data model, WRAP Hydro, developed specifically for the WRAP project. A new method of determining watershed parameters for the Guadalupe basin using the Arc Hydro and WRAP Hydro toolsets is discussed. The parameter processing is done...

Gopalan, Hema

297

Evaluation of kinetic parameters appropriate for modeling urethane foam insulation performance  

Science Journals Connector (OSTI)

Computer codes which model the pyrolysis of thermal insulators for in-depth temperature response are particularly sensitive to the kinetic parameters used in the code. The parameter values, which are evaluated...

I. Auerbach

298

Effects of Depleted Uranium on Oxidative Stress, Detoxification, and Defence Parameters of Zebrafish Danio rerio  

Science Journals Connector (OSTI)

In this study, we investigated the effects of depleted uranium (DU), the by-product of nuclear enrichment of uranium, on several parameters related to oxidative stress...Danio rerio. Several parameters were recor...

Beatrice Gagnaire; Isabelle Cavalie…

2013-01-01T23:59:59.000Z

299

Parameter Identification for a Dispersive Dielectric in 2D Electromagnetics: Forward and Inverse  

E-Print Network [OSTI]

Parameter Identification for a Dispersive Dielectric in 2D Electromagnetics: Forward and Inverse with a Debye dielectric slab and PML absorbing boundaries. This system assumes that the electric #12;Parameter

300

Efficient Characterization of Uncertain Model Parameters with a Reduced-Order Ensemble Kalman Filter  

E-Print Network [OSTI]

Spatially variable model parameters are often highly uncertain and difficult to observe. This has prompted the widespread use of Bayesian characterization methods that can infer parameter values from measurements of related ...

Lin, Binghuai

Note: This page contains sample records for the topic "tox parameter tox" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Relations Among Linear and Circulur Polarization Parameters Measured in Canted Hydrometeors  

Science Journals Connector (OSTI)

Parameters derived from measurements using circular and linear polarizations are mathematically interrelated. In this work this interdependence is investigated. It is shown that circular and linear polarization parameters share a common ...

A. R. Jameson

1987-12-01T23:59:59.000Z

302

U-243: libvirt virTypedParameterArrayClear() Memory Access Error...  

Broader source: Energy.gov (indexed) [DOE]

3: libvirt virTypedParameterArrayClear() Memory Access Error Lets Remote Users Deny Service U-243: libvirt virTypedParameterArrayClear() Memory Access Error Lets Remote Users Deny...

303

Modal parameter extraction from large operating structures using ambient excitation  

SciTech Connect (OSTI)

A technique called the Natural Excitation Technique or has been developed to response extract response parameters from large operational structure when subjected to random and unmeasured forces such as wind, road noise, aerodynamics, or waves. Six applications of NExT to ambient excitation testing and NExT analysis are surveyed in this paper with a minimum of technical detail. In the first application, NExT was applied to a controlled-yaw Horizontal-Axis Wind Turbine (HAWT). By controlling the yaw degree of freedom an important class of rotating coordinate system effects are reduced. A new shape extraction procedure was applied to this data set with good results. The second application was to a free-yaw HAWT. The complexity of the response has prompted further analytical studies and the development of a specialized visualization package. The third application of NExT was to a parked three-bladed Vertical-Axis Wind Turbine (VAWT) in which traditional modal testing could not excite all modes of interest. The shape extraction process used cross-correlation functions directly in a time-domain shape-fitting routine. The fourth application was to ground transportation systems. Ongoing work to improve driver and passenger comfort in tractor-trailer vehicles and to refine automobile body and tire models will use NExT. NExT has been used to process ambient vibration data for Finite Element Model correlation and is being used to study Structural Health Monitoring with ambient excitation. Shape fitting was performed using amplitude and phase information taken directly from the cross-spectra. The final application is to an offshore structure. This work is on-going, however initial studies have found a high-modal density, high noise content, and sparse data set.

James, G.H. III; Carne, T.G.; Mayes, R.L.

1995-12-31T23:59:59.000Z

304

Probing Neutrino Oscillation Parameters using High Power Superbeam from ESS  

E-Print Network [OSTI]

A high-power neutrino superbeam experiment at the ESS facility has been proposed such that the source-detector distance falls at the second oscillation maximum, giving very good sensitivity towards establishing CP violation. In this work, we explore the comparative physics reach of the experiment in terms of leptonic CP-violation, precision on atmospheric parameters, non-maximal theta23, and its octant for a variety of choices for the baselines. We also vary the neutrino vs. the anti-neutrino running time for the beam, and study its impact on the physics goals of the experiment. We find that for the determination of CP violation, 540 km baseline with 7 years of neutrino and 3 years of anti-neutrino (7nu+3nubar) run-plan performs the best and one expects a 5sigma sensitivity to CP violation for 48% of true values of deltaCP. The projected reach for the 200 km baseline with 7nu+3nubar run-plan is somewhat worse with 5sigma sensitivity for 34% of true values of deltaCP. On the other hand, for the discovery of a non-maximal theta23 and its octant, the 200 km baseline option with 7nu+3nubar run-plan performs significantly better than the other baselines. A 5sigma determination of a non-maximal theta23 can be made if the true value of sin^2theta23 lesssim 0.45 or sin^2theta23 gtrsim 0.57. The octant of theta23 could be resolved at 5sigma if the true value of sin^2theta23 lesssim 0.43 or gtrsim 0.59, irrespective of deltaCP.

Sanjib Kumar Agarwalla; Sandhya Choubey; Suprabh Prakash

2015-01-04T23:59:59.000Z

305

Surface Albedo/BRDF Parameters (Terra/Aqua MODIS)  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

Spatially and temporally complete surface spectral albedo/BRDF products over the ARM SGP area were generated using data from two Moderate Resolution Imaging Spectroradiometer (MODIS) sensors on Terra and Aqua satellites. A landcover-based fitting (LBF) algorithm is developed to derive the BRDF model parameters and albedo product (Luo et al., 2004a). The approach employs a landcover map and multi-day clearsky composites of directional surface reflectance. The landcover map is derived from the Landsat TM 30-meter data set (Trishchenko et al., 2004a), and the surface reflectances are from MODIS 500m-resolution 8-day composite products (MOD09/MYD09). The MOD09/MYD09 data are re-arranged into 10-day intervals for compatibility with other satellite products, such as those from the NOVA/AVHRR and SPOT/VGT sensors. The LBF method increases the success rate of the BRDF fitting process and enables more accurate monitoring of surface temporal changes during periods of rapid spring vegetation green-up and autumn leaf-fall, as well as changes due to agricultural practices and snowcover variations (Luo et al., 2004b, Trishchenko et al., 2004b). Albedo/BRDF products for MODIS on Terra and MODIS on Aqua, as well as for Terra/Aqua combined dataset, are generated at 500m spatial resolution and every 10-day since March 2000 (Terra) and July 2002 (Aqua and combined), respectively. The purpose for the latter product is to obtain a more comprehensive dataset that takes advantages of multi-sensor observations (Trishchenko et al., 2002). To fill data gaps due to cloud presence, various interpolation procedures are applied based on a multi-year observation database and referring to results from other locations with similar landcover property. Special seasonal smoothing procedure is also applied to further remove outliers and artifacts in data series.

Trishchenko, Alexander

306

ZERO IMPACT PARAMETER WHITE DWARF COLLISIONS IN FLASH  

SciTech Connect (OSTI)

We systematically explore zero impact parameter collisions of white dwarfs (WDs) with the Eulerian adaptive grid code FLASH for 0.64 + 0.64 M {sub Sun} and 0.81 + 0.81 M {sub Sun} mass pairings. Our models span a range of effective linear spatial resolutions from 5.2 Multiplication-Sign 10{sup 7} to 1.2 Multiplication-Sign 10{sup 7} cm. However, even the highest resolution models do not quite achieve strict numerical convergence, due to the challenge of properly resolving small-scale burning and energy transport. The lack of strict numerical convergence from these idealized configurations suggests that quantitative predictions of the ejected elemental abundances that are generated by binary WD collision and merger simulations should be viewed with caution. Nevertheless, the convergence trends do allow some patterns to be discerned. We find that the 0.64 + 0.64 M {sub Sun} head-on collision model produces 0.32 M {sub Sun} of {sup 56}Ni and 0.38 M {sub Sun} of {sup 28}Si, while the 0.81 + 0.81 M {sub Sun} head-on collision model produces 0.39 M {sub Sun} of {sup 56}Ni and 0.55 M {sub Sun} of {sup 28}Si at the highest spatial resolutions. Both mass pairings produce {approx}0.2 M {sub Sun} of unburned {sup 12}C+{sup 16}O. We also find the 0.64 + 0.64 M {sub Sun} head-on collision begins carbon burning in the central region of the stalled shock between the two WDs, while the more energetic 0.81 + 0.81 M {sub Sun} head-on collision raises the initial post-shock temperature enough to burn the entire stalled shock region to nuclear statistical equilibrium.

Hawley, W. P.; Athanassiadou, T.; Timmes, F. X., E-mail: Wendy.Hawley@asu.edu [School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287 (United States)

2012-11-01T23:59:59.000Z

307

Many-body and model-potential calculations of low-energy photoionization parameters for francium  

E-Print Network [OSTI]

parameter Q by Lubell and co-workers 11 , and with the measurement of the angular-distribution asymmetry

Johnson, Walter R.

308

Neutron field parameter measurements on the JET tokamak by means of super-heated fluid detectors  

E-Print Network [OSTI]

Neutron field parameter measurements on the JET tokamak by means of super-heated fluid detectors M OF SCIENTIFIC INSTRUMENTS 83, 10E124 (2012) Neutron field parameter measurements on the JET tokamak by means 2 August 2012) The neutron field parameters (fluence and energy distribution) at a specific location

309

The Impacts of Physical Layer Parameters on the Connectivity of Ad-Hoc Networks  

E-Print Network [OSTI]

The Impacts of Physical Layer Parameters on the Connectivity of Ad-Hoc Networks Javad Kazemitabar,hyousefi,hamidj]@uci.edu The Impacts of Physical Layer Parameters on the Connectivity of Ad-Hoc Networks ­ p.1/20 #12;Outline Layer Parameters on the Connectivity of Ad-Hoc Networks ­ p.2/20 #12;Outline · Background Ergodic SER

Yousefi'zadeh, Homayoun

310

Recovery of 3D Solar Magnetic Field Model Parameter Using Image Structure Matching  

Science Journals Connector (OSTI)

An approach to recover a 3D solar magnetic field model parameter using intensity images of the Sun's corona is introduced. The approach is a quantitative approach in which the 3D model parameter is determined via an image structure matching scheme. The ... Keywords: 3D Parameter Recovery, Image-based Modeling, Structure Matching

Jong Kwan Lee; G. Allen Gary

2009-05-01T23:59:59.000Z

311

Thermal and Magnetic Parameters in Solar Flares Derived from GOES X-Ray Light Curves  

Science Journals Connector (OSTI)

......6110 6190 6220 6310 Thermal and Magnetic Parameters in Solar Flares Derived from...impulsive phase of 20 solar flares and to estimate the thermal and magnetic parameters...parameters and the thermal ones, have been applied not only to solar flares, but also......

Tetsuya T. Yamamoto; Takashi Sakurai

2010-06-25T23:59:59.000Z

312

Prediction of the PC-SAFT Associating Parameters by Molecular Simulation  

Science Journals Connector (OSTI)

Prediction of the PC-SAFT Associating Parameters by Molecular Simulation ... In this work, we propose a new methodology to determine association scheme and association parameters (energy and volume) of a SAFT-type EoS for hydrogen-bonding molecules. ... A new set of parameters for 1-alkanol for the PPC-SAFT equation of state has been proposed following this methodology. ...

Nicolas Ferrando; Jean-Charles de Hemptinne; Pascal Mougin; Jean-Philippe Passarello

2011-11-29T23:59:59.000Z

313

Effect of a Quenched Disorder on the Order Parameter of Superfluid 3He  

SciTech Connect (OSTI)

As a consequence of continuous degeneracy of the order parameter of the superfluid 3He quenched disorder in a form of aerogel gives rise both to a disruption of the orientational long-range order of the condensate and to a significant change of the order parameter itself. There exist a class of quasi-isotropic order parameters which are not sensitive to the disorienting effect of aerogel. While the BW order parameter belongs to this class the ABM does not. A possible candidate for the order parameter of the observed A-like phase is discussed.

Fomin, I. A. [P. L. Kapitza Institute for Physical Problems, ul. Kosygina 2, 119334 Moscow (Russian Federation)

2006-09-07T23:59:59.000Z

314

Ultlra-intense laser-matter interactions at extreme parameters  

SciTech Connect (OSTI)

The field of shortpulse lasers has seen rapid growth in the recent years with the three major boundaries of energy, pulse duration and repetition rate being pushed in ever extremer regions. At peak powers, already exceeding 10{sup 22} W/cm{sup 2}, in virtually every experiment in relativistic laser physics, the laser pulse interacts with a more or less extended and heated plasma, due to prepulses and ASE-like pedestals on ps - ns time scales. By developing a new technique for ultrahigh contrast, we were able to initiate the next paradigm shift in relativistic laser-matter interactions, allowing us to interact ultrarelativistic pulses volumetrically with overdense targets. This becomes possible by using target and laser parameters that will turn the target relativistically transparent during the few 10s-100s femtoseconds fo the interaction. Specifically, we interact an ultraintese, ultrahigh contrast pulse with solid density, free standing, nanometer diamond target. This paradigm change towards a volumetric overdense interaction in turn enables new particle acceleration mechanisms for both electrons and ions, as well as forward directed relativistic surface harmonics. We report here on first experiments done on those topics at the 200 TW Trident laser at Los Alamos as well as at the Ti:Sapphire system at MBI. We will compare the experimental data to massive large scale 3D simulations done on the prototype of LANL's new Petafiop supercomputer Roadrunner, which is leading the current top 500 list. Specifically, we developed a shortpulse OPA based pulse cleaning technique. Fielding it at the Trident 200 TW laser at Los Alamos, we were able to improve the pulse contrast by 6 orders of magnitude to better than 2 x 10{sup -12} at less than a ps. This enabled for the first time the interaction of a 100J, 200TW laser pulse with a truly solid target with virtually no expansion before the main pulse - target interaction, making possible the use of very thin targets, The thinnest of these at less than 3nm, i.e. 1/300 of the laser wavelength, are even thinner than the plasma skin depth. This drastically changes the laser-matter interaction physics leading to the emergence of new particle acceleration mechanisms, like Break-Out Afterburner (BOA) Acceleration, driven by a relativistic, kinetic plasma instability or Radiation Pressure Acceleration (RPA), driven by stabilized charge separation. Furthermore, these interactions also produce relativistic high harmonics in forward direction as well as mono-en,ergetic electron pulses which might lend itself as a source for fully coherent Thomson scattering in the mulit-keV regime. In this talk I will present an overview over the laser developments leading to this paradigm change as well as over the theoretical and experimental results following from it. Specifically we were able for the first time to demonstrate BOA acceleration of Carbon ions to up to 0.5 GeV using a laser pulse with {approx}10{sup 20} W/cm{sup 2} intensity and showing the scalability of this mechanism into regimes relevant for Hadron Therapy. We were further able to demonstrate mono-energetic electron break-out from ultrathin targets, as a first step towards a flying mirror.

Hegellich, Bjorn M [Los Alamos National Laboratory

2010-11-24T23:59:59.000Z

315

Coordinated optimization of the parameters of the cooled gas-turbine flow path and the parameters of gas-turbine cycles and combined-cycle power plants  

Science Journals Connector (OSTI)

In the present paper, we evaluate the effectiveness of the coordinated solution to the optimization problem for the parameters of cycles in gas turbine and combined cycle power plants and to the optimization prob...

A. M. Kler; Yu. B. Zakharov; Yu. M. Potanina

2014-06-01T23:59:59.000Z

316

U-243: libvirt virTypedParameterArrayClear() Memory Access Error Lets  

Broader source: Energy.gov (indexed) [DOE]

3: libvirt virTypedParameterArrayClear() Memory Access Error 3: libvirt virTypedParameterArrayClear() Memory Access Error Lets Remote Users Deny Service U-243: libvirt virTypedParameterArrayClear() Memory Access Error Lets Remote Users Deny Service August 24, 2012 - 7:00am Addthis PROBLEM: libvirt virTypedParameterArrayClear() Memory Access Error Lets Remote Users Deny Service PLATFORM: Version(s): 0.9.13 and prior ABSTRACT: A vulnerability was reported in libvirt. reference LINKS: libvirt SecurityTracker Alert ID: 1027437 Secunia Advisory SA50118 Bugtraq ID: 54748 CVE-2012-3445 IMPACT ASSESSMENT: Medium Discussion A remote user can send a specially crafted RPC call with the number of parameters set to zero to libvirtd to trigger a memory access error in virTypedParameterArrayClear() and cause the target service to crash. Impact:

317

Unifying parameter estimation and the Deutsch-Jozsa algorithm for continuous variables  

SciTech Connect (OSTI)

We reveal a close relationship between quantum metrology and the Deutsch-Jozsa algorithm on continuous-variable quantum systems. We develop a general procedure, characterized by two parameters, that unifies parameter estimation and the Deutsch-Jozsa algorithm. Depending on which parameter we keep constant, the procedure implements either the parameter-estimation protocol or the Deutsch-Jozsa algorithm. The parameter-estimation part of the procedure attains the Heisenberg limit and is therefore optimal. Due to the use of approximate normalizable continuous-variable eigenstates, the Deutsch-Jozsa algorithm is probabilistic. The procedure estimates a value of an unknown parameter and solves the Deutsch-Jozsa problem without the use of any entanglement.

Zwierz, Marcin; Perez-Delgado, Carlos A.; Kok, Pieter [Department of Physics and Astronomy, University of Sheffield, Hounsfield Road, Sheffield S3 7RH (United Kingdom)

2010-10-15T23:59:59.000Z

318

Assessing Invariance of Factor Structures and Polytomous Item Response Model Parameter Estimates  

E-Print Network [OSTI]

.e., identical items, different people) for the homogenous graded response model (Samejima, 1969) and the partial credit model (Masters, 1982)? To evaluate measurement invariance using IRT methods, the item discrimination and item difficulty parameters... obtained from the GRM need to be equivalent across datasets. The YFCY02 and YFCY03 GRM item discrimination parameters (slope) correlation was 0.828. The YFCY02 and YFCY03 GRM item difficulty parameters (location) correlation was 0...

Reyes, Jennifer McGee

2012-02-14T23:59:59.000Z

319

Detecting Dependence in the Sensitive Parameter Space of a Model Using Statistical Inference and Large Forecast Ensembles  

Science Journals Connector (OSTI)

This study looks for evidence of correlation among model physical parameters in the sensitive parameter space defined by those randomly sampled physical parameter vectors that induce the most notable response in some forecast metric. These “...

J. G. McLay; M. Liu

2014-10-01T23:59:59.000Z

320

E-Print Network 3.0 - apparent lattice parameter Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and Information Sciences 34 condmat9801215 Crossovers in the Two Dimensional Ising Spin Glass Summary: parameter of the staggered overlap against the temperature. The...

Note: This page contains sample records for the topic "tox parameter tox" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Key Parameters Affecting DPF Performance Degradation and Impact on Lifetime Fuel Economy  

Broader source: Energy.gov [DOE]

Summarizes latest findings on impact of specific parameters affecting ash-related diesel particulate filter performance degradation and information useful to enhance performance and extend service life

322

Direct Reconstruction of dynamical dark energy from observational Hubble Parameter data  

E-Print Network [OSTI]

Reconstructing the evolution history of the equation of state parameter $w(z)$ directly from observational data is highly valuable in cosmology, since it holds substantial clues in understanding the origin of the accelerated expansion of the Universe. Contrast to a wealth of works on reconstructing $w(z)$ from supernova data, few work pay attention to Hubble parameter data. We analyze the merit of Hubble parameter data and make an attempt on reconstructing $w(z)$ from them, using the PCA approach introduced. We find that current Hubble parameter data does well in reconstructing w(z), though compared to supernova data, they are scant and their quality is much poor.

Liu, Zhi-E; Zhang, Tong-Jie; Wang, Bao-Quan; Bi, Shao-Lan

2015-01-01T23:59:59.000Z

323

A Constraint between Noncommutative Parameters of Quantum Theories in Noncommutative Space  

E-Print Network [OSTI]

In two-dimensional noncommutive space for the case of both position - position and momentum - momentum noncommuting, a constraint between noncommutative parameters is investigated. The related topic of guaranteeing Bose - Einstein statistics in noncommutive space in the general case are elucidated: Bose - Einstein statistics is guaranteed by the deformed Heisenberg - Weyl algebra itself, independent of dynamics. A special character of a dynamical system is represented by a constraint between noncommutative parameters. The general feature of the constraint for any system is a direct proportionality between noncommutative parameters with a proportional coefficient depending on characteristic parameters of the system under study. The constraint for a harmonic oscillator is illustrated.

Jian-Zu Zhang

2007-01-23T23:59:59.000Z

324

E-Print Network 3.0 - alter contractile parameters Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

signals, cellular contractility, and tumor progression, we recently investigated... models are indeed sensitive to ECM stiffness, and that this microenvironmental parameter can...

325

Identification of material parameters for continuum modeling of phase transformations in multicomponent systems  

E-Print Network [OSTI]

Identification of material parameters for continuum modeling of phase transformations called order pa- rameters, which take on specified values in the bulk phases. If the transformation

Umantsev, Alexander

326

A distributed parameter model for the torsional vibration analysis of turbine-generator shafts  

Science Journals Connector (OSTI)

A distributed parameter model is presented for the calculation of torsional vibrations of large turbine-generator shafts, on the basis of electrical analogy...

A. Deri; L. Kiss; G. Toth

1987-01-01T23:59:59.000Z

327

Parameter inference for discretely observed stochastic kinetic models using stochastic gradient descent  

E-Print Network [OSTI]

deterministic or stochas- tic. Deterministic strategies arenumber of simulations of the stochas- tic model. Similarly,parameters of a stochas- tic model based on the observations

Wang, Yuanfeng; Christley, Scott; Mjolsness, Eric; Xie, Xiaohui

2010-01-01T23:59:59.000Z

328

A Workflow for Parameter Calibration and and Model Validation in SST: Interim Report.  

SciTech Connect (OSTI)

This brief report explains the method used for parameter calibration and model validation in SST/Macro and the set of tools and workflow developed for this purpose.

Pebay, Philippe Pierre; Wilke, Jeremiah J; Sargsyan, Khachik

2014-12-01T23:59:59.000Z

329

Optimizing parameters for predicting the geochemical behavior and performance of discrete fracture networks in geothermal systems  

Broader source: Energy.gov [DOE]

Optimizing parameters for predicting the geochemical behavior and performance of discrete fracture networks in geothermal systems presentation at the April 2013 peer review meeting held in Denver, Colorado.

330

E-Print Network 3.0 - affects bone parameters Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of bone quality will ultimately affect physical and morpho- logic parameters... fracture rates are most closely associated with ... Source: Rubin, Clinton T.- Department of...

331

Identification of crystalline structures using Mössbauer parameters and artificial neural network  

Science Journals Connector (OSTI)

Mössbauer spectroscopy is a useful technique for characterizing the valencies, electronic and magnetic states, coordination symmetries and site occupancies of Fe cations. The Mössbauer parameters of Isomer Shi...

E. O. T. Salles; P. A. De Souza Júnior…

1995-03-01T23:59:59.000Z

332

Some rockmagnetic parameters for natural goethite, pyrrhotite and fine-grained hematite.  

E-Print Network [OSTI]

??The increasing importance of sediments for paleomagnetic research prompted a study of rockmagnetic parameters of natural goethite, pyrrhotite and hematite. Grain-size dependent behaviour of such… (more)

Dekkers, M.J.

1988-01-01T23:59:59.000Z

333

Variation in lattice parameters of 6H-SiC irradiated to extremely...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

observed. The decrease in the a parameter may originate from the irradiation-induced vacancies and the possible formation of antisite defects that cause the lattice structure on...

334

Direct attach cable assembly specification analysis from 8 port S-parameters.  

E-Print Network [OSTI]

??This thesis focuses on test and characterization of the Direct Attach passive cables by 8 port s-parameter analysis. The setup comprises of the Network Analyzer,… (more)

Paithankar, Shachi

2011-01-01T23:59:59.000Z

335

Fusion procedure for the two-parameter quantum algebra $U_{r,s}(sl_n)$  

E-Print Network [OSTI]

Irreducible modules of the two-parameter quantum enveloping algebra $U_{r,s}(\\mathfrak{sl}_n)$ are explicitly constructed using the fusion procedure, when $rs^{-1}$ is not a root of unity. This provides an alternative and combinatorial description of the Schur-Weyl duality for two-parameter quantum algebras of type $A$.

Naihuan Jing; Ming Liu

2014-02-15T23:59:59.000Z

336

Time-Varying FOPDT Modeling and On-line Parameter Identification  

E-Print Network [OSTI]

dynamic modeling in a supermarket refrigeration system. Keywords: System identification, FOPDT, time in a refrigeration system. The TV-FOPDT model is an extension of the standard FOPDT by allowing the system parameters. The proposed approaches can simultaneously estimate the time-dependent system parameters, as well

Yang, Zhenyu

337

Sensitivity analysis of sediment resuspension parameters in coastal area of southern Lake Michigan  

E-Print Network [OSTI]

Sensitivity analysis of sediment resuspension parameters in coastal area of southern Lake Michigan analysis was performed to identify and compare quantitatively the important resuspension parameters in the coastal area of southern Lake Michigan. A one-dimensional resuspension and bed model capable of dealing

338

Applying Grid Computing to the Parameter Sweep of a Group Difference Pseudopotential  

E-Print Network [OSTI]

Applying Grid Computing to the Parameter Sweep of a Group Difference Pseudopotential Wibke Sudholt1 computing grid can now provide the necessary resources. Here, we present a coupling of the GAMESS quantum chemical code to the Nimrod/G grid distribution tool, which is applied to the parameter scan of a group

Abramson, David

339

Parameter Estimation of Dynamic Air-conditioning Component Models Using Limited Sensor Data  

E-Print Network [OSTI]

???? Percentage opening of the EEV ?? Compressor volume ?? Error function ?1, ?2, ?3 Valve parameters ?0 Initial compression of the valve spring ?? Displacement of expansion valve head Greek symbols ?0 , ?1 Intermediate valve parameters....4 Simulink Response Optimization Toolbox ............................. 35 xi CHAPTER Page...

Hariharan, Natarajkumar

2011-08-08T23:59:59.000Z

340

Result-Driven Exploration of Simulation Parameter Spaces for Visual Effects Design  

E-Print Network [OSTI]

Result-Driven Exploration of Simulation Parameter Spaces for Visual Effects Design Stefan Bruckner visualization system then allows the user to explore the simulation space in a goal-oriented manner. Animation to modify the simulation parameters via standard con- trols such as sliders or numeric input fields

Note: This page contains sample records for the topic "tox parameter tox" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Modeling of a Biomass Gasification CHP Plant: Influence of Various Parameters on Energetic and Exergetic Efficiencies  

Science Journals Connector (OSTI)

Modeling of a Biomass Gasification CHP Plant: Influence of Various Parameters on Energetic and Exergetic Efficiencies ... This paper presents a theoretical assessment of energy, exergy, and syngas cleaning performances in a biomass gasification combined heat and power (CHP) plant with varying operating parameters. ... The analysis is carried out using a detailed model of a biomass gasification CHP plant developed with Aspen Plus. ...

Jessica François; Guillain Mauviel; Michel Feidt; Caroline Rogaume; Yann Rogaume; Olivier Mirgaux; Fabrice Patisson; Anthony Dufour

2013-10-21T23:59:59.000Z

342

ESTIMATING DAMPING PARAMETERS IN MULTI-DEGREE-OF-FREEDOM VIBRATION SYSTEMS BY BALANCING ENERGY0  

E-Print Network [OSTI]

of Vibration and Acoustics, 131 (4) 041005, 2009 Measurement of damping forces, such as dry frictionESTIMATING DAMPING PARAMETERS IN MULTI-DEGREE-OF-FREEDOM VIBRATION SYSTEMS BY BALANCING ENERGY0 B@egr.msu.edu ABSTRACT A method of estimating damping parameters for multi- degree-of-freedom vibration systems

Feeny, Brian

343

H-G Diagram Based Rotor Parameters Identification for Induction Motors Thermal Monitoring  

E-Print Network [OSTI]

H-G Diagram Based Rotor Parameters Identification for Induction Motors Thermal Monitoring Mohamed: In this paper, an effective on-line method for induction motor parameter identification, especially rotor for each operating point. Computer simulations and experimental tests, carried out for a 4-kW four

Brest, Université de

344

Identification of Critical Parameters for Distribution Networks with DFIG and Dynamic loads  

E-Print Network [OSTI]

Identification of Critical Parameters for Distribution Networks with DFIG and Dynamic loads M. S of distribution network with Doubly Fed Induction Generator (DFIG) is presented in a different way where an analysis to investigate the critical parameters for distribution systems with dynamic loads where DFIGs

Pota, Himanshu Roy

345

The E-utilities In-Depth: Parameters, Syntax and More Eric Sayers, PhD  

E-Print Network [OSTI]

The E-utilities In-Depth: Parameters, Syntax and More Eric Sayers, PhD NCBI sayers@ncbi.nlm.nih.gov Introduction This chapter serves as a reference for all supported parameters for the E-utilities, along with accepted values and usage guidelines. This information is provided for each E-utility in sections below

Levin, Judith G.

346

Total Dissolved Gas submodel parameter calibration for use with CRiSP  

E-Print Network [OSTI]

gas levels · included dissipation of gases in reservoirs · included entrainment of powerhouse waters which allows for powerhouse-passed water to become gassed by spill water. The entrainment parameter that powerhouse water is either always or never mixed. CRiSP parameters generally reflect changes in the dam

Washington at Seattle, University of

347

Brief paper: A parameter space approach to constrained variance PID controller design  

Science Journals Connector (OSTI)

This paper presents a parameter space approach to constrained variance and minimum variance PID controller design for LTI models. The technique is based on rational transfer functions of the plant and noise models. Loci corresponding to a fixed variance ... Keywords: Low-order controllers, Minimum variance, Multi-objective, PID, Parameter space

P. B. Dickinson; A. T. Shenton

2009-03-01T23:59:59.000Z

348

A Model-Based Approach to Synthesizing Insulin Infusion Pump Usage Parameters for Diabetic Patients  

E-Print Network [OSTI]

A Model-Based Approach to Synthesizing Insulin Infusion Pump Usage Parameters for Diabetic Patients Fainekos Abstract-- We present a model-based approach to synthesiz- ing insulin infusion pump usage parameters against varying meal scenarios and physiological conditions. Insulin infusion pumps are commonly

Sankaranarayanan, Sriram

349

Bayesian wavelet approaches for parameter estimation and change point detection in long memory processes  

E-Print Network [OSTI]

The main goal of this research is to estimate the model parameters and to detect multiple change points in the long memory parameter of Gaussian ARFIMA(p, d, q) processes. Our approach is Bayesian and inference is done on wavelet domain. Long memory...

Ko, Kyungduk

2005-11-01T23:59:59.000Z

350

Physical and chemical parameters in wastewater and at the water-sediment interface in sewer network  

E-Print Network [OSTI]

Physical and chemical parameters in wastewater and at the water- sediment interface in sewer parameters and concentrations of major ions, trace metals and sulphur species in wastewater but also, to the biogeochemical transformation of inorganic and organic compounds present in the wastewater (Ashley et al., 2004

Paris-Sud XI, Université de

351

A metamodeling approach for studying ignition target robustness in a highly dimensional parameter space  

E-Print Network [OSTI]

-up, kinetic energy ignition margin, laser-plasma instabilities, etc. As there are several design parametersA metamodeling approach for studying ignition target robustness in a highly dimensional parameter designed to ignite their central hot spots and burn. Changes in the optimal implosion could reduce

Garnier, Josselin

352

Local Sequential Ensemble Kalman Filter for Simultaneously Tracking States and Parameters  

E-Print Network [OSTI]

and parameters using phasor-measurement-unit (PMU) data. Based on simulation studies using multi-machine systems be of significant value if some parameters of dynamic models can be calibrated on line using event data. The real) over a wide area was not possible because data from the Supervisory Control and Data Acquisition (SCADA

Welch, Greg

353

Minimal Experimental Data Set Required for Estimating PCP-SAFT Parameters  

Science Journals Connector (OSTI)

Minimal Experimental Data Set Required for Estimating PCP-SAFT Parameters ... The pure-component parameters of the Perturbed Chain Polar-Statistical Associating Fluid Theory (PCP-SAFT) equation of state are usually fitted to experimental data over broad temperature ranges. ... PCP-SAFT Equation of State ...

Katja Albers; Gabriele Sadowski

2011-09-12T23:59:59.000Z

354

Parameter optimization for the Gaussian model of protein foldingq Albert Erkipa  

E-Print Network [OSTI]

of protein folding and ligand docking are large and complex. Few systematic methods have yet been developed apply this parameter optimization method to the recently developed Gaussian model of protein folding Science Ltd. All rights reserved. Keywords: Gaussian model; Protein folding; Parameter optimization 1

Seok, Chaok

355

U-089:Apache Struts ParameterInterceptor() Flaw Lets Remote Users Execute  

Broader source: Energy.gov (indexed) [DOE]

9:Apache Struts ParameterInterceptor() Flaw Lets Remote Users 9:Apache Struts ParameterInterceptor() Flaw Lets Remote Users Execute Arbitrary Commands U-089:Apache Struts ParameterInterceptor() Flaw Lets Remote Users Execute Arbitrary Commands January 26, 2012 - 6:45am Addthis PROBLEM: Apache Struts ParameterInterceptor() Flaw Lets Remote Users Execute Arbitrary Commands PLATFORM: Struts 2.0.0 - Struts 2.3.1.1 ABSTRACT: A remote user can execute arbitrary code on the target system. reference LINKS: CVE-2011-3923 SecurityTracker Alert ID: 1026575 Apache Struts 2 Documentation S2-009 blog.o0o.nu IMPACT ASSESSMENT: High Discussion: A vulnerability was reported in Apache Struts. The vulnerability allows a malicious user to bypass all the protections (regex pattern, deny method invocation) built into the ParametersInterceptor, thus being able to inject

356

The slope parameter approach to marine cathodic protection design and its application to impressed current systems  

SciTech Connect (OSTI)

The recently developed slope parameter approach to design of galvanic anode cathodic protection (cp) systems for marine structures constitutes an advancement in this technology compared to current practice, primarily because the former is first principles based and the latter is an empirical algorithm. In this paper, the slope parameter approach is reviewed; and related applications for which it can be utilized, including (1) design of new and retrofit cp systems, (2) evaluation of potential survey data, and (3) cp system design for complex geometries, are mentioned. The design current density is identified as the single remaining parameter for which values must be projected solely by experience or experimentation. In addition, the slope parameter approach is applied to the results of impressed current cp experiments, and it is shown how parameters for this can be interrelated with those of galvanic anode cp. Advantages of this capability are identified and discussed.

Hartt, W.H.

1999-07-01T23:59:59.000Z

357

Automatic determination about precision parameter value based on inclusion degree with variable precision rough set model  

Science Journals Connector (OSTI)

Abstract The rough set theory provides a powerful approach for attributes reduction and data analysis. The variable precision rough set (VPRS) model, an extension of the original rough set approach, tolerates misclassifications of the training data to some degree, which promotes the applications of rough set theory in inconsistent information systems. However, in most existing algorithms of feature reduction based on VPRS, the precision parameter (?) is introduced as prior knowledge, which restricts their applications because it is not clear how to set the ? value. By studying ?-consistency in the measurement of a decision table and the threshold value of the ?-consistent decision table, this paper presents an algorithm for automatic determination of the precision parameter value from a decision table based on VPRS. At the same time, the precision parameter value from our proposed method is compared with the thresholds from the decision-theoretic rough set (DTRS). The influences of the precision parameter are also discussed on attribute reduction, which shows the necessity of the estimated precision parameter from a decision table. The simulation results including VPRS and other classification methods in real data further indicate that different precision parameter values make a great difference on rules and setting a precise parameter near the threshold value of the ?-consistent decision table can precisely reflect the decision distribution of the decision table.

Yusheng Cheng; Wenfa Zhan; Xindong Wu; Yuzhou Zhang

2015-01-01T23:59:59.000Z

358

Parameter Analysis of the VPIN (Volume synchronized Probability of Informed Trading) Metric  

SciTech Connect (OSTI)

VPIN (Volume synchronized Probability of Informed trading) is a leading indicator of liquidity-induced volatility. It is best known for having produced a signal more than hours before the Flash Crash of 2010. On that day, the market saw the biggest one-day point decline in the Dow Jones Industrial Average, which culminated to the market value of $1 trillion disappearing, but only to recover those losses twenty minutes later (Lauricella 2010). The computation of VPIN requires the user to set up a handful of free parameters. The values of these parameters significantly affect the effectiveness of VPIN as measured by the false positive rate (FPR). An earlier publication reported that a brute-force search of simple parameter combinations yielded a number of parameter combinations with FPR of 7percent. This work is a systematic attempt to find an optimal parameter set using an optimization package, NOMAD (Nonlinear Optimization by Mesh Adaptive Direct Search) by Audet, le digabel, and tribes (2009) and le digabel (2011). We have implemented a number of techniques to reduce the computation time with NOMAD. Tests show that we can reduce the FPR to only 2percent. To better understand the parameter choices, we have conducted a series of sensitivity analysis via uncertainty quantification on the parameter spaces using UQTK (Uncertainty Quantification Toolkit). Results have shown dominance of 2 parameters in the computation of FPR. Using the outputs from NOMAD optimization and sensitivity analysis, We recommend A range of values for each of the free parameters that perform well on a large set of futures trading records.

Song, Jung Heon; Wu, Kesheng; Simon, Horst D.

2014-03-01T23:59:59.000Z

359

Using a scalar parameter to trace dislocation evolution in atomistic modeling  

SciTech Connect (OSTI)

A scalar gamma-parameter is proposed from the Nye tensor. Its maximum value occurs along a dislocation line, either straight or curved, when the coordinate system is purposely chosen. This parameter can be easily obtained from the Nye tensor calculated at each atom in atomistic modeling. Using the gamma-parameter, a fully automated approach is developed to determine core atoms and the Burgers vectors of dislocations simultaneously. The approach is validated by revealing the smallest dislocation loop and by tracing the whole formation process of complicated dislocation networks on the fly.

Yang, Jinbo [ORNL; Zhang, Z F [Shenyang National Laboratory for Materials Science; Osetskiy, Yury N [ORNL; Stoller, Roger E [ORNL

2015-01-01T23:59:59.000Z

360

Variations in environmental tritium doses due to meteorological data averaging and uncertainties in pathway model parameters  

SciTech Connect (OSTI)

The objectives of this research are: (1) to calculate and compare off site doses from atmospheric tritium releases at the Savannah River Site using monthly versus 5 year meteorological data and annual source terms, including additional seasonal and site specific parameters not included in present annual assessments; and (2) to calculate the range of the above dose estimates based on distributions in model parameters given by uncertainty estimates found in the literature. Consideration will be given to the sensitivity of parameters given in former studies.

Kock, A.

1996-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "tox parameter tox" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Post-Newtonian parameters and constraints on Einstein-aether theory  

Science Journals Connector (OSTI)

We analyze the observational and theoretical constraints on “Einstein-aether theory,” a generally covariant theory of gravity coupled to a dynamical, unit, timelike vector field that breaks local Lorentz symmetry. The results of a computation of the remaining post-Newtonian parameters are reported. These are combined with other results to determine the joint post-Newtonian, vacuum-?erenkov, nucleosynthesis, stability, and positive-energy constraints. All of these constraints are satisfied by parameters in a large two-dimensional region in the four-dimensional parameter space defining the theory.

Brendan Z. Foster and Ted Jacobson

2006-03-15T23:59:59.000Z

362

Reconstruction of a Deceleration Parameter from the Latest Type Ia Supernovae Gold Dataset  

E-Print Network [OSTI]

In this paper, a parameterized deceleration parameter $q(z)= 1/2 - a/(1 + z)^b$ is reconstructed from the latest type Ia supernovae gold dataset. It is found out that the transition redshift from decelerated expansion to accelerated expansion is at $z_T=0.35^{+0.14}_{-0.07}$ with $1\\sigma$ confidence level in this parameterized deceleration parameter. And, the best fit values of parameters in $1\\sigma$ errors are $a=1.56^{+0.99}_{-0.55}$ and $b=3.82^{+3.70}_{-2.27}$.

Lixin Xu; Chengwu Zhang; Baorong Chang; Hongya Liu

2007-01-17T23:59:59.000Z

363

Investigation of some renewable energy and exergy parameters for two Geothermal District Heating Systems  

Science Journals Connector (OSTI)

In this study, three new exergy parameters, namely total exergy destruction ratio, component exergy destruction ratio and dimensionless exergy destruction are introduced in addition to energetic renewability ratio, exergetic renewability ratio, energetic reinjection ratio and exergetic reinjection ratio, and compared for Edremit and Bigadic Geothermal District Heating Systems (GDHSs) based on their actual data. The respective daily graphs of these parameters are presented. Also, regression analyses using the actual data are performed to obtain some correlations for practical use. In brief, these parameters help us to identify the degree of renewability and other aspects and provide some insights.

C. Coskun; Z. Oktay; I. Dincer

2011-01-01T23:59:59.000Z

364

Method for estimation of gravitational-wave transient model parameters in frequency-time maps  

E-Print Network [OSTI]

A common technique for detection of gravitational-wave signals is searching for excess power in frequency-time maps of gravitational-wave detector data. In the event of a detection, model selection and parameter estimation will be performed in order to explore the properties of the source. In this paper, we develop a Bayesian statistical method for extracting model-dependent parameters from observed gravitational-wave signals in frequency-time maps. We demonstrate the method by recovering the parameters of model gravitational-wave signals added to simulated advanced LIGO noise. We also characterize the performance of the method and discuss prospects for future work.

Michael Coughlin; Nelson Christensen; Jonathan Gair; Shivaraj Kandhasamy; Eric Thrane

2014-04-17T23:59:59.000Z

365

A programme for electron-impact broadening parameter calculations of ionized rare-earth element lines  

E-Print Network [OSTI]

In order to provide atomic data needed for astrophysical investigations, a set of electron-impact broadening parameters for ionized rare-earth element lines should be calculated. We are going to calculate the electron-impact broadening parameters for more than 50 transitions of ionized rare-earth elements. Taking into account that the spectra of these elements are very complex, for calculation we can use the modified semiempirical approach - MSE or simplified MSE. Also, we can estimate these parameters on the basis of regularities and systematic trends.

L. C. Popovic; M. S. Dimitrijevic

1998-05-15T23:59:59.000Z

366

Optimization of parameters for the inline-injection system at Brookhaven Accelerator Test Facility  

SciTech Connect (OSTI)

We present some of our parameter optimization results utilizing code PARMLEA, for the ATF Inline-Injection System. The new solenoid-Gun-Solenoid -- Drift-Linac Scheme would improve the beam quality needed for FEL and other experiments at ATF as compared to the beam quality of the original design injection system. To optimize the gain in the beam quality we have considered various parameters including the accelerating field gradient on the photoathode, the Solenoid field strengths, separation between the gun and entrance to the linac as well as the (type size) initial charge distributions. The effect of the changes in the parameters on the beam emittance is also given.

Parsa, Z. [Brookhaven National Lab., Upton, NY (United States); Ko, S.K. [Ulsan Univ. (Korea, Republic of)

1995-10-01T23:59:59.000Z

367

U-163: PHP Command Parameter Bug Lets Remote Users Obtain Potentially  

Broader source: Energy.gov (indexed) [DOE]

3: PHP Command Parameter Bug Lets Remote Users Obtain 3: PHP Command Parameter Bug Lets Remote Users Obtain Potentially Sensitive Information and Execute Arbitrary Code U-163: PHP Command Parameter Bug Lets Remote Users Obtain Potentially Sensitive Information and Execute Arbitrary Code May 7, 2012 - 7:00am Addthis PROBLEM: PHP Command Parameter Bug Lets Remote Users Obtain Potentially Sensitive Information and Execute Arbitrary Code PLATFORM: Prior to 5.3.12 and 5.4.2 ABSTRACT: A vulnerability was reported in PHP. A remote user can obtain potentially sensitive information. A remote user can execute arbitrary code on the target system. reference LINKS: SecurityTracker Alert ID: 1027022 CVE-2012-1823 CVE-2012-2311 IMPACT ASSESSMENT: High Discussion: A remote user can submit a specially crafted request containing a command

368

V-162: Apache Struts "ParameterInterceptor" Security Bypass Vulnerability |  

Broader source: Energy.gov (indexed) [DOE]

2: Apache Struts "ParameterInterceptor" Security Bypass 2: Apache Struts "ParameterInterceptor" Security Bypass Vulnerability V-162: Apache Struts "ParameterInterceptor" Security Bypass Vulnerability May 23, 2013 - 6:00am Addthis PROBLEM: A vulnerability has been reported in Apache Struts PLATFORM: The vulnerability is reported in versions prior to 2.3.14.1 ABSTRACT: A vulnerability has been reported in Apache Struts, which can be exploited by malicious people to bypass certain security restrictions. REFERENCE LINKS: Secunia Advisory SA53495 Apache Struts Advisory S2-012 Apache Struts Advisory S2-013 CVE-2013-1965 CVE-2013-1966 IMPACT ASSESSMENT: High DISCUSSION: A request that included a specially crafted request parameter could be used to inject arbitrary OGNL code into the stack, afterward used as request

369

Ising spin system with a rectangular distribution of internal energy parameters  

Science Journals Connector (OSTI)

The model of a spin system with internal degrees of freedom is solved for a rectangular distribution of the internal energy parameters. For simplicity, the interaction between the spin clusters is taken as the...

A. Freudenhammer

1985-01-01T23:59:59.000Z

370

Performance bounds on matched-field methods for source localization and estimation of ocean environmental parameters  

E-Print Network [OSTI]

Matched-field methods concern estimation of source location and/or ocean environmental parameters by exploiting full wave modeling of acoustic waveguide propagation. Typical estimation performance demonstrates two fundamental ...

Xu, Wen, 1967-

2001-01-01T23:59:59.000Z

371

Selection of Coal Gasification Parameters for Injection of Gasification Products Into a Blast Furnace  

Science Journals Connector (OSTI)

An analytical study was performed on the influence of blast parameters on the course of the processes in the volume of a blast furnace and smelting rates by injection of low-grade coal gasification products. It w...

I. G. Tovarovsky; A. E. Merkulov

2014-01-01T23:59:59.000Z

372

One-parameter semigroups of analytic functions, fixed points and the Koenigs function  

SciTech Connect (OSTI)

Analogues of the Berkson-Porta formula for the infinitesimal generator of a one-parameter semigroup of holomorphic maps of the unit disc into itself are obtained in the case when, along with a Denjoy-Wolff point, there also exist other fixed points. With each one-parameter semigroup a so-called Koenigs function is associated, which is a solution, common for all elements of the one-parameter semigroup, of a certain functional equation (Schroeder's equation in the case of an interior Denjoy-Wolff point and Abel's equation in the case of a boundary Denjoy-Wolff point). A parametric representation for classes of Koenigs functions that takes account of the Denjoy-Wolff point and other fixed points of the maps in the one-parameter semigroup is presented. Bibliography: 19 titles.

Goryainov, Victor V; Kudryavtseva, Olga S [Volzhsky Institute of Humanities, Volgograd Region, Volzhsky (Russian Federation)

2011-07-31T23:59:59.000Z

373

The Efficacy of Galaxy Shape Parameters in Photometric Redshift Estimation: A Neural Network Approach  

SciTech Connect (OSTI)

We present a determination of the effects of including galaxy morphological parameters in photometric redshift estimation with an artificial neural network method. Neural networks, which recognize patterns in the information content of data in an unbiased way, can be a useful estimator of the additional information contained in extra parameters, such as those describing morphology, if the input data are treated on an equal footing. We show that certain principal components of the morphology information are correlated with galaxy type. However, we find that for the data used the inclusion of morphological information does not have a statistically significant benefit for photometric redshift estimation with the techniques employed here. The inclusion of these parameters may result in a trade-off between extra information and additional noise, with the additional noise becoming more dominant as more parameters are added.

Singal, J.; Shmakova, M.; Gerke, B.; /KIPAC, Menlo Park /SLAC /Stanford U.; Griffith, R.L.; /Caltech, JPL; Lotz, J.; /NOAO, Tucson

2011-05-20T23:59:59.000Z

374

Wind Direction Dependence of Atmospheric Boundary Layer Turbulence Parameters in the Urban Roughness Sublayer  

Science Journals Connector (OSTI)

A variety of atmospheric boundary layer parameters are examined as a function of wind direction in both urban and suburban settings in Oklahoma City, Oklahoma, derived from measurements during the Joint Urban 2003 field campaign. Heterogeneous ...

Cheryl Klipp

2007-12-01T23:59:59.000Z

375

Effective parameters in axial injection suspension plasma spray process of alumina-zirconia ceramics  

E-Print Network [OSTI]

Effective parameters in axial injection suspension plasma spray process of alumina- zirconia phases using extra small particles as compared to conventional thermal spraying. Suspension spraying% yittria stabilized zirconia was deposited by axial injection SPS process. The effects of principal

Medraj, Mamoun

376

Catching the fish - Constraining stellar parameters for TX Psc using spectro-interferometric observations  

E-Print Network [OSTI]

Stellar parameter determination is a challenging task when dealing with galactic giant stars. The combination of different investigation techniques has proven to be a promising approach. We analyse archive spectra obtained with the Short-Wavelength-Spectrometer (SWS) onboard of ISO, and new interferometric observations from the Very Large Telescope MID-infrared Interferometric instrument (VLTI/MIDI) of a very well studied carbon-rich giant: TX Psc. The aim of this work is to determine stellar parameters using spectroscopy and interferometry. The observations are used to constrain the model atmosphere, and eventually the stellar evolutionary model in the region where the tracks map the beginning of the carbon star sequence. Two different approaches are used to determine stellar parameters: (i) the 'classic' interferometric approach where the effective temperature is fixed by using the angular diameter in the N-band (from interferometry) and the apparent bolometric magnitude; (ii) parameters are obtained by fit...

Klotz, D; Hron, J; Aringer, B; Sacuto, S; Marigo, P; Verhoelst, T

2013-01-01T23:59:59.000Z

377

E-Print Network 3.0 - aerosol parameter inversion Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

parameter inversion Page: << < 1 2 3 4 5 > >> 1 The Way Forward2 Authors: David Rind, NASA GISS; Ralph A. Kahn, NASA GSFC; Mian Chin, NASA3 Summary: ) hygroscopic growth, (f)...

378

Multi-parameter monitoring of a solution mining cavern collapse: first insight of precursors  

E-Print Network [OSTI]

Multi-parameter monitoring of a solution mining cavern collapse: first insight of precursors leveling; early warning system; environmental safety; salt cavern; near-surface geophysics. Mots clés

Paris-Sud XI, Université de

379

Habitat related differences in age structure and reproductive parameters of red foxes  

Science Journals Connector (OSTI)

We studied the age-structure and the reproductive parameters in two samples of red foxesVulpes vulpes (Linnaeus, 1758) from two contiguous areas in the Ebro valley (NE Spain) differing in the level of deliberate ...

Christian Gortázar; Pablo Ferreras; Rafael Villafuerte; María Martín…

2003-03-01T23:59:59.000Z

380

Aggregation of U.S. Population Centers Using Climate Parameters Related to Building Energy Use  

Science Journals Connector (OSTI)

A technique for aggregating population centers into groups based on selected climate parameters is presented. Climate information on the 125 largest Standard Metropolitan Statistical Areas (SMSAs) in the United States is used to assign each SMSA ...

Brandt Andersson; William L. Carroll; Marlo R. Martin

1986-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "tox parameter tox" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Transient climate changes in a perturbed parameter ensemble of emissions-driven earth system model simulations  

Science Journals Connector (OSTI)

We describe results from a 57-member ensemble of transient climate change simulations, featuring simultaneous perturbations to 54 parameters in the atmosphere, ocean, sulphur cycle and terrestrial ecosystem compo...

James M. Murphy; Ben B. B. Booth; Chris A. Boulton; Robin T. Clark…

2014-11-01T23:59:59.000Z

382

A parameter design of CNC plasma-arc cutting of carbon steel plates using robust design  

Science Journals Connector (OSTI)

An optimisation of the cutting parameters during CNC plasma-arc cutting of St37 mild steel plates is attempted using robust design. The process parameters tested were plate thickness, cutting speed, arc ampere, arc voltage, air pressure, pierce height, and torch standoff distance. An orthogonal matrix experiment [L18 (21 × 37) ] was conducted and the right bevel angle was measured and optimised according to the process parameters using an analysis of means and an analysis of variances. The results show that the arc ampere has an effect mainly on the bevel angle (50.89%), while the plate thickness and torch standoff distance also have an influence of 6.22 and 15.9% respectively. The other parameters have an F factor smaller than one, and thus their variations do not significantly affect the bevel angle in the experimental region. Finally, an additive model was applied on the experimental results to predict the optimum combination and was compared with actual values.

John Kechagias; Michael Billis; Stergios Maropoulos

2010-01-01T23:59:59.000Z

383

Mathematical modelling approach for determining optimal machining parameters in turning with computer numerical control (CNC) machines  

Science Journals Connector (OSTI)

Due to advancement in the manufacturing technology the application of computer numerical control (CNC) machines have increased manifolds. The determination of machining parameters for optimal results in machining is a part of computer aided process planning. In computer numerical control (CNC) machining, determining optimum or appropriate cutting parameters can minimise machining errors such as tool breakage, tool deflection and tool wear, thus yielding a high productivity or minimum cost. Different mathematical models have been proposed by various researchers in the past for the determination of optimal machining parameters. The present paper attempt's to review the literature regarding 'machining parameter optimisation' for turning operation in CNC machines. Diverse contributing and important factors in mathematical modelling like, the economic criteria's, single and multi-pass turning, optimisation techniques and practical constraints deployed have been considered. A detailed discussion is presented regarding the topic and in the end conclusions are drawn.

Bhaskar Naithani; Santram Chauhan

2012-01-01T23:59:59.000Z

384

MODIS Consistent Vegetation Parameter Specifications and Their Impacts on Regional Climate Simulations  

Science Journals Connector (OSTI)

A consistent set of Moderate Resolution Imaging Spectroradiometer (MODIS) vegetation parameters, including leaf and stem area index (LAI and SAI, respectively), land-cover category (LCC), fractional vegetation cover (FVC), and albedo ...

Min Xu; Xin-Zhong Liang; Arthur Samel; Wei Gao

2014-11-01T23:59:59.000Z

385

Parameter Estimation Using Ensemble Based Data Assimilation in the Presence of Model Error  

Science Journals Connector (OSTI)

This work explores the potential of on-line parameter estimation as a technique for model error treatment under an imperfect model scenario, in an ensemble-based data assimilation system, using a simple atmospheric general circulation model and an ...

Juan Ruiz; Manuel Pulido

386

Parameters of free-burning arc discharge plasma in air with silver-based electrodes  

Science Journals Connector (OSTI)

We have used optical spectroscopy to study the radial temperature profiles for an electric arc plasma between silver electrodes and electrodes made ... . We established that the parameters of the arc discharge pl...

I. L. Babich; A. N. Veklich; L. A. Kryachko…

2006-05-01T23:59:59.000Z

387

Calculating the parameters of electric-arc heaters with gas-stabilized arcs  

Science Journals Connector (OSTI)

We used a turbulent model of a longitudinally streamlined electric arc to derive an analytical solution for the ... of the distribution of the primary flow and discharge parameters in a cylindrical discharge chan...

N. A. Zyrichev

1969-07-01T23:59:59.000Z

388

Design parameters for indoor swimming-pool heating using solar energy  

Science Journals Connector (OSTI)

We present an analysis of an indoor swimming-pool with solar collector panels. An analytical expression is derived for the system efficiency in terms of heat-exchanger and collector designs and climatic parameters.

G.N. Tiwari; S.B. Sharma

1991-01-01T23:59:59.000Z

389

Sensitivity analysis of dimensionless parameters for physical simulation of water-flooding reservoir  

Science Journals Connector (OSTI)

A numerical approach to optimize dimensionless parameters of water-flooding porous media flows is proposed based on the analysis of the sensitivity factor defined as the variation ration of a target function w...

Yuhu Bai; Jiachun Li; Jifu Zhou

2005-07-01T23:59:59.000Z

390

EXPERIMENTAL STUDY ON THE EFFECTS OF OPERATIONAL PARAMETERS OF A DOWNDRAFT GASIFIER.  

E-Print Network [OSTI]

??To examine the effects of operational parameters on syn-gas quality and bio-fuel conversion rate under various running conditions, an experimental study of hardwood chip?s gasification… (more)

Wei, Lin

2005-01-01T23:59:59.000Z

391

Calculation of the microscopic parameters of a self-induced transparency modelocked quantum cascade laser  

Science Journals Connector (OSTI)

A model to calculate the microscopic parameters of self-induced transparency (SIT) modelocked quantum cascade lasers (QCLs) is presented and the parameters are then calculated for a particular structure. These parameters are then used to calculate the gain to absorption ratio that is required to determine the required ratio of gain periods to absorbing periods that must be grown in order to obtain stable modelocked pulses. The modelocked pulse parameters, along with the stability limits are then calculated as the ratio of gain to absorption varies. For the SIT modelocked QCL design that we examined, we found that three to five gain periods must be grown for each absorbing period in order to ensure stable operation.

Muhammad Anisuzzaman Talukder; Curtis R. Menyuk

2013-01-01T23:59:59.000Z

392

Depleted Uranium Disturbs Immune Parameters in Zebrafish, Danio rerio: An Ex Vivo/In Vivo Experiment  

Science Journals Connector (OSTI)

In this study, we investigated the effects of depleted uranium (DU), the byproduct of nuclear enrichment of uranium, on several parameters related to defence system...Danio rerio, using flow cytometry. Several im...

Béatrice Gagnaire; Anne Bado-Nilles…

2014-10-01T23:59:59.000Z

393

Water metabolic parameter changes in rhesus monkeys during exposure to prolonged restriction of motor activity  

Science Journals Connector (OSTI)

The objective of this investigation was to determine the effect of prolonged restriction of motor activity (hypokinesia [HK]) on several parameters of water metabolism in primates. The studies were performed ... ...

Yan G. Zorbas; Nikolai A. Kuznetsov…

1997-05-01T23:59:59.000Z

394

The Study of Electromagnetic Parameters of Space Weather, Micro-Satellite “Chibis-M”  

Science Journals Connector (OSTI)

Plasma-wave experiment on the micro-satellite “Chibis-M” is aimed at the ... – atmosphere connections and the parameters of space weather. Specific fundamental problem is the search for...–1 to 10–3...s. (3) Stud...

Stanislav Klimov; Denis Novikov…

2010-01-01T23:59:59.000Z

395

Mineral Mössbauer spectroscopy: Correlations between chemical shift and quadrupole splitting parameters  

Science Journals Connector (OSTI)

The variety of coordination numbers, symmetries, distortions and ligand environments in thermally-stable iron-bearing minerals provide wide ranges of chemical shift (?) and quadrupole splitting (?) parameters, wh...

Roger G. Burns

1994-01-01T23:59:59.000Z

396

A Model Based on Lumped Parameters for Filippov-type Plasma Focus Devices  

Science Journals Connector (OSTI)

A model based on the Lumped Parameters has been presented for the description of behaviour of the Filippov-type Plasma Focus devices. Some results of this model for "Dena" Filippov-type Plasma Focus device (90 kJ...

S. Goudarzi; R. Amrollahi; R. Saberi Moghaddam

2008-09-01T23:59:59.000Z

397

Degeneration Effects in Distributed Systems and Their Behavior as Their Parameters Approach the Point of Degeneration  

Science Journals Connector (OSTI)

For the unidimensional distributed nondegenerate linear system, the conditions for degeneracy and convergence of behavior as its parameters approach the point of degeneracy were established and studied using by way of example the unidimensional system ...

E. M. Solnechnyi

2004-11-01T23:59:59.000Z

398

E-Print Network 3.0 - air quality parameters Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

parameters. You will be asked to search on-line for information... Chemistry 2 Sep. 22 Air Pollution Overview The Atmosphere Air Quality Monitoring Networks 1 3 Sep. 29......

399

Evaluating and developing parameter optimization and uncertainty analysis methods for a computationally intensive distributed hydrological model  

E-Print Network [OSTI]

This study focuses on developing and evaluating efficient and effective parameter calibration and uncertainty methods for hydrologic modeling. Five single objective optimization algorithms and six multi-objective optimization algorithms were tested...

Zhang, Xuesong

2009-05-15T23:59:59.000Z

400

Aperiodic signals processing via parameter-tuning stochastic resonance in a photorefractive ring cavity  

SciTech Connect (OSTI)

Based on solving numerically the generalized nonlinear Langevin equation describing the nonlinear dynamics of stochastic resonance by Fourth-order Runge-Kutta method, an aperiodic stochastic resonance based on an optical bistable system is numerically investigated. The numerical results show that a parameter-tuning stochastic resonance system can be realized by choosing the appropriate optical bistable parameters, which performs well in reconstructing aperiodic signals from a very high level of noise background. The influences of optical bistable parameters on the stochastic resonance effect are numerically analyzed via cross-correlation, and a maximum cross-correlation gain of 8 is obtained by optimizing optical bistable parameters. This provides a prospective method for reconstructing noise-hidden weak signals in all-optical signal processing systems.

Li, Xuefeng, E-mail: lixfpost@163.com [School of Science, Xi'an University of Post and Telecommunications, Xi'an, 710121 (China)] [School of Science, Xi'an University of Post and Telecommunications, Xi'an, 710121 (China); Cao, Guangzhan; Liu, Hongjun [Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, 710119 (China)] [Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, 710119 (China)

2014-04-15T23:59:59.000Z

Note: This page contains sample records for the topic "tox parameter tox" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Lattice discretization effects on the critical parameters of model nonpolar and polar fluids  

E-Print Network [OSTI]

Lattice discretization effects on the critical parameters of model nonpolar and polar fluids Sarvin Moghaddam Department of Chemical Engineering, University of Maryland, College Park, Maryland 20742 Athanassios Z. Panagiotopoulosa) Department of Chemical Engineering, Princeton University, Princeton, New

402

Investigation of lane occupancy as a freeway control parameter for use during incident conditions  

E-Print Network [OSTI]

parameters were used in the automatic control of' a freeway safety warning device. Two concepts, usir g measured lane occupancy foz the detection of' freeway incidents, were developed, . The f'irst concept was ter. . . cd critical occupancy... freeway safety warning device, using critical occupancy parameters, was developed and simulated in real-time. Evaluation of the simulated operation of the device revealed. that relia'cle detection of shock waves generated by freeway incidents...

Friebele, John Duncan

1972-01-01T23:59:59.000Z

403

Optimization of Operating Parameters for Minimum Mechanical Specific Energy in Drilling  

SciTech Connect (OSTI)

Efficiency in drilling is measured by Mechanical Specific Energy (MSE). MSE is the measure of the amount of energy input required to remove a unit volume of rock, expressed in units of energy input divided by volume removed. It can be expressed mathematically in terms of controllable parameters; Weight on Bit, Torque, Rate of Penetration, and RPM. It is well documented that minimizing MSE by optimizing controllable factors results in maximum Rate of Penetration. Current methods for computing MSE make it possible to minimize MSE in the field only through a trial-and-error process. This work makes it possible to compute the optimum drilling parameters that result in minimum MSE. The parameters that have been traditionally used to compute MSE are interdependent. Mathematical relationships between the parameters were established, and the conventional MSE equation was rewritten in terms of a single parameter, Weight on Bit, establishing a form that can be minimized mathematically. Once the optimum Weight on Bit was determined, the interdependent relationship that Weight on Bit has with Torque and Penetration per Revolution was used to determine optimum values for those parameters for a given drilling situation. The improved method was validated through laboratory experimentation and analysis of published data. Two rock types were subjected to four treatments each, and drilled in a controlled laboratory environment. The method was applied in each case, and the optimum parameters for minimum MSE were computed. The method demonstrated an accurate means to determine optimum drilling parameters of Weight on Bit, Torque, and Penetration per Revolution. A unique application of micro-cracking is also presented, which demonstrates that rock failure ahead of the bit is related to axial force more than to rotation speed.

Hamrick, Todd

2011-05-25T23:59:59.000Z

404

Assessment of intensive silvicultural practices and livestock grazing on watershed parameters, Kisatchie National Forest, Louisiana  

E-Print Network [OSTI]

ASSESSMENT OF INTENSIVE SILVICULTURAL PRACTICES AND LIVESTOCK GRAZING ON WATERSHED PARAMETERS, KISATCHIE NATIONAL FOREST, LOUISIANA A Thesis by THOMAS KENNETH HUNTER JR. Submitted to the Graduate College of Texas A&M University in partial... fulfillment of the requirements for the degree of MASTER OF SCIENCE May 1985 Major Subject: Range Science ASSESSMENT OF INTENSIVE SILVICULTURAL PRACTICES AND LIVESTOCK GRAZING ON WATERSHED PARAMETERS, KISATCHIE NATIONAL FOREST, LOUISIANA A Thesis...

Hunter, Thomas Kenneth

1985-01-01T23:59:59.000Z

405

Calculated fuel temperatures for a proposed space based reactor using the lumped parameter method  

E-Print Network [OSTI]

CALCULATED FUEL TEMPERATURES FOR A PROPOSED SPACE BASED REACTOR USING THE LUMPED PARAMETER METHOD A Thesis by CELESTE MARIE STEEN Submitted to the Office of Graduate Studies of Texas AgcM University in partial fulfillment of the requirements... f' or the degree of MASTER OF SCIENCE December 1990 Major Subject: Nuclear Engineering CALCULATED FUEL TEMPERATURES FOR A PROPOSED SPACE BASED REACTOR USING THE LUMPED PARAMETER METHOD A Thesis by CELESTE MARIE STEEiV Approved as to style...

Steen, Celeste Marie

2012-06-07T23:59:59.000Z

406

Construction of a driver-vehicle model and identification of the driver model parameters  

E-Print Network [OSTI]

CONSTRUCTION OF A DRIVER-VEHICLE MODEL AND IDENTIFICATION OF THE DRIVER MODEL PARAMETERS A Thesis by , JEMENG SU Submitted to the Graduate College of Texas A8M University in partial fulfillment of the requiremr nt for the degree of MASTER... OF SCIENCE December 1981 Major Subject: Mechanical Engineering CONSTRUCTION OF A DRIVER-VEHICLE MODEL AND IDENTIFICATION OF THE DRIVER MODEL PARAMETERS A Thesis by JEMENG SU Approved as to style and content by: (Chairman of Committe ) / I...

Su, Jemeng

2012-06-07T23:59:59.000Z

407

Nondestructive evaluation of distributed damage in graphite/epoxy beams using modal parameters  

E-Print Network [OSTI]

NONDESTRUCTIVE EVALUATIOV OF DISTRIBUTED DAMAGE IN GRAPHITE/EPOXY BEAMS USING MODAL PARAMETERS A Thesis YOUNG IK KIM Submitted to the Office of Graduate Studies of Texas AkM University in partial fulfillment of the requirement for the degree... of ItIASTER OF SCIEVCE August 1989 Major Subject: Aerospace Engineering NONDESTRI. 'CTIVE EVALUATION OF DISTRIBUTED DAMAGE IN GRAPHITE/EPOXY BEAMS USING MODAL PARAMETERS A Thesis by YOUNG IK KIM Approved as to style and content by: Duane R...

Kim, Young Ik

2012-06-07T23:59:59.000Z

408

Determination of useful performance parameters for the ALR8(SI) plutonium pit container system  

E-Print Network [OSTI]

DETERMINATION OF USEFUL PERFORMANCE PARAMETERS FOR THE ALRS(SI) PLUTONIUM PIT CONTAINER SYSTEM A Thesis by MARK ALAN PIERCE Submitted to the Office of Cnaduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE December 2000 Major Subject: Industrial Hygiene DETERMINATION OF USEFUL PERFORMANCE PARAMETERS FOR THE ALRS(SI) PLUTONIUM PIT CONTAINER SYSTEM A Thesis by MARK ALAN PIERCE Submitted to the Office of Graduate Studies...

Pierce, Mark Alan

2000-01-01T23:59:59.000Z

409

Image use in the characterization of field parameters: incorporation of remote sensing with hydrologic simulation modeling  

E-Print Network [OSTI]

for discrepancies in values of certain temporal and This thesis foflows the style and format of Transactions of tfre ASAE. site-specific model parameters. The hydrologic simulation model will no longer depend entirely on initial conditions specified by the user... for discrepancies in values of certain temporal and This thesis foflows the style and format of Transactions of tfre ASAE. site-specific model parameters. The hydrologic simulation model will no longer depend entirely on initial conditions specified by the user...

Fox, Garey Alton

2012-06-07T23:59:59.000Z

410

Generator Dynamic Model Validation and Parameter Calibration Using Phasor Measurements at the Point of Connection  

SciTech Connect (OSTI)

Disturbance data recorded by phasor measurement units (PMU) offers opportunities to improve the integrity of dynamic models. However, manually tuning parameters through play-back events demands significant efforts and engineering experiences. In this paper, a calibration method using the extended Kalman filter (EKF) technique is proposed. The formulation of EKF with parameter calibration is discussed. Case studies are presented to demonstrate its validity. The proposed calibration method is cost-effective, complementary to traditional equipment testing for improving dynamic model quality.

Huang, Zhenyu; Du, Pengwei; Kosterev, Dmitry; Yang, Steve

2013-05-01T23:59:59.000Z

411

Impurity Effect on the Order Parameter Collective Mode in Superfluid 3He in Aerogel  

SciTech Connect (OSTI)

In liquid 3He confined in aerogel, the 3He quasiparticles are scattered by random distribution of short-range potentials provided by the aerogel. We discuss the impurity effect on the dynamics of a p-wave order parameter on the basis of the linear response theory in the Keldysh formulation. Among the various types of order parameter fluctuations, we focus on the squashing mode which is known to couple to longitudinal sound.

Higashitani, S.; Nagai, K. [Faculty of Integrated Arts and Sciences, Hiroshima University, Kagamiyama 1-7-1, Higashi-hiroshima 739-8521 (Japan); Miura, M. [Graduate School of Advanced Sciences of Matter, Hiroshima University, Kagamiyama 1-3-1, Higashi-hiroshima 739-8530 (Japan)

2006-09-07T23:59:59.000Z

412

The importance of transport parameter cross correlations in natural systems radioactive transport models  

SciTech Connect (OSTI)

Transport parameter cross correlations are rarely considered in models used to predict radionuclide transport in natural systems. In this paper, it is shown that parameter cross correlations could have a significant impact on radionuclide transport predictions in saturated media. In fractured rock, the positive correlation between fracture apertures and groundwater residence times is shown to result in significantly less retardation due to matrix diffusion than is predicted without the correlation. The suppression of matrix diffusion is further amplified by a tendency toward larger apertures, smaller matrix diffusion coefficients, and less sorption capacity in rocks of lower matrix porosity. In a hypothetical example, strong cross correlations between these parameters result in a decrease in predicted radionuclide travel times of an order of magnitude or more relative to travel times calculated with uncorrelated parameters. In porous media, expected correlations between permeability, porosity, and sorption capacity also result in shorter predicted travel times than when the parameters are assumed to be uncorrelated. Individual parameter standard deviations can also have a significant influence on predicted radionuclide travel times, particularly when cross correlations are considered.

Reimus, Paul W [Los Alamos National Laboratory

2011-01-03T23:59:59.000Z

413

The estimated ocean detector: Detection of signals with different parameter distributions  

Science Journals Connector (OSTI)

Earlier we presented a maximum likelihood receiver for acoustic signals that have propagated through a random or uncertain ocean the estimated oceandetector (EOD) [Ballard et al. Oceans 2006 Boston MA]. In general the EOD incorporates statistical knowledge of signal uncertainty in the form of signal parameters probability density functions(pdfs). Note that Monte Carlo simulation and possibly other techniques can utilize deterministic and statistical knowledge of the environmental to predict signal parameter pdfs. The EOD utilizes the a priori signal parameter pdfs to estimate signal parameters from the data (or observations) then correlates the estimate with the data; hence the name estimator?correlator is also used. Previously we showed that for Gaussian signals embedded in Gaussian noise the EOD reduces to the weighted sum of an energy detector and a correlation detector. This talk presents an EOD formulated to distinguish between signals whose parameters possess different a priori distributions. Performance is seen to depend upon the difference between parameter distributions for the two different signals. [Work supported by ONR Undersea Signal Processing Code 321US.

2007-01-01T23:59:59.000Z

414

Field evaluation of natural gas and dry sorbent injection for MWC emissions control  

SciTech Connect (OSTI)

The Institute of Gas Technology (IGT), in cooperation with the Olmsted Waste-to-Energy Facility (OWEF) and with subcontracted engineering services from the Energy and Environmental Research Corporation (EER), has completed the detailed engineering and preparation of construction specifications for an Emissions Reduction Testing System (ERTS). The ERTS has been designed for retrofit to one of two 100-ton/day municipal waste combustors at the OWEF, located in Rochester, Minnesota. The purpose of the retrofit is to conduct a field evaluation of a combined natural gas and sorbent injection process (IGT`s METHANE de-TOX{sup SM}, IGT Patent No. 5,105,747) for reducing the emissions of oxides of nitrogen (NO{sub x}), hydrochloric acid (HCI), oxides of sulfur (SO{sub x}), carbon monoxide (CO), total hydrocarbons (THC), and chlorinated hydrocarbons (dioxin/furans). In addition, the design includes modifications for the control of heavy metals (HM). Development of the process should allow the waste-to-energy industry to meet the Federal New Source Performance Standards for these pollutants at significantly lower costs when compared to existing technology of Thermal deNO{sub x} combined with spray dryer scrubber/fabric filters. Additionally, the process should reduce boiler corrosion and increase both the thermal and power production efficiency of the facility.

Wohadlo, S.; Abbasi, H.; Cygan, D. [Institute of Gas Technology, Chicago, IL (United States)] Institute of Gas Technology, Chicago, IL (United States)

1993-10-01T23:59:59.000Z

415

Treatment of pulp mill sludges by supercritical water oxidation  

SciTech Connect (OSTI)

Supercritical water oxidation (SCWO) is new process that can oxidize organics very effectively at moderate temperatures (400 to 650{degree}C) and high pressure (3700 psi). It is an environmentally acceptable alternative for sludge treatment. In bench scale tests, total organic carbon (TOC) and total organic halide (TOX) reductions of 99 to 99.9% were obtained; dioxin reductions were 95 to 99.9%. A conceptual design for commercial systems has been completed and preliminary economics have been estimated. Comparisons confirm that SCWO is less costly than dewatering plus incineration for treating pulp mill sludges. SCWO can also compete effectively with dewatering plus landfilling where tipping fees exceed $35/yd{sup 3}. In some regions of the US, tipping fees are now $75/yd{sup 3} and rising steadily. In the 1995 to 2000 time frame, SCWO has a good chance of becoming the method of choice. MODEC's objective is to bring the technology to commercial availability by 1993. 10 refs., 6 figs., 19 tabs.

Modell, M.

1990-07-01T23:59:59.000Z

416

Constraining Red-shift Parametrization Parameters in Brans-Dicke Theory: Evolution of Open Confidence Contours  

E-Print Network [OSTI]

In Brans Dicke theory of gravity, from the nature of the scalar field-potential considered, the dark energy, dark matter, radiation densities predicted by different observations and the closedness of the universe considered, we can fix our $\\omega_{BD}$, the Brans Dicke parameter, keeping only the thing in mind that from different solar system constrains it must be greater than $5\\times 10^{5}$. Once we have a value, satisfying the required lower boundary, in our hand we proceed for setting unknown parameters of the different dark energy models' EoS parameter. In this paper we work with three well known red shift parametrizations of dark energy EoS. To constrain their free parameters for Brans Dicke theory of gravity we take twelve point red shift vs Hubble's parameter data and perform $\\chi^{2}$ test. We present the observational data analysis mechanism for Stern, Stern+BAO and Stern+BAO+CMB observations. Minimising $\\chi^2$, we obtain the best fit values and draw different confidence contours. We analyze the contours physically. Also we examine the best fit of distance modulus for our theoretical models and the Supernovae Type Ia Union2 sample. For Brans Dicke theory of gravity the difference from the mainstream confidence contouring method of data analysis id that the confidence contours evolved are not at all closed contours like a circle or a ellipse. Rather they are found to be open contours allowing the free parameters to float inside a infinite region of parameter space. However, negative EoSs are likely to evolve from the best fit values.

Ritabrata Biswas; Ujjal Debnath

2013-12-04T23:59:59.000Z

417

Comparison of gasification kinetics parameters of different types of nuclear graphite  

SciTech Connect (OSTI)

A chemical-reaction kinetics model of nuclear graphite gasification has recently been developed and successfully validated with gasification rate measurements for nuclear graphite grades of IG-110, IG-430, NBG-18 and NBG-25. The model employs 4 elementary chemical reactions with applicable parameters, including the values and Gaussian-like distributions of the specific activation energies, the pre-exponential coefficients for adsorption of oxygen and desorption of CO and CO{sub 2} gases, and the surface area of free active sites. These parameters are determined from the reported measurements of the total gasification and transient weight loss using a multi-parameter optimization algorithm. The determined chemical kinetics parameters for IG-100 and NB-25 are nearly the same, but slightly different from those for NBG-18 and IG-430. The initial specific area of free active sites is inversely proportional to the square root of the mass or volume of the graphite specimens used in experiments. The recommended chemical kinetics parameters in this paper for these grades of nuclear graphite should be applicable to future safety analysis of high-temperature gas cooled reactors in the unlikely event of a massive air ingress accident. (authors)

El-Genk, M. S. [Inst. for Space and Nuclear Power Studies, Univ. of New Mexico, Albuquerque, NM (United States); Chemical and Nuclear Engineering Dept., Univ. of New Mexico, Albuquerque, NM (United States); Mechanical Engineering Dept., Univ. of New Mexico, Albuquerque, NM (United States); Tournier, J. M. P. [Inst. for Space and Nuclear Power Studies, Univ. of New Mexico, Albuquerque, NM (United States); Chemical and Nuclear Engineering Dept., Univ. of New Mexico, Albuquerque, NM (United States)

2012-07-01T23:59:59.000Z

418

Anisotropy parameters estimate and rock physics analysis for the Barnett Shale  

Science Journals Connector (OSTI)

The rock physics model is an important tool for the characterization of shale reservoirs. We propose an improved anisotropic rock physics model of shale by introducing clay lamination (CL) index as a modeling parameter in effective medium theories. The parameter CL describes the degree of preferred orientation in distributions of clay particles, which depends on deposition and diagenesis history and determines intrinsic anisotropy of shales. Those complicated parameters of sophisticated methods that are difficult to quantify are substituted by CL. The applications of the proposed rock physics method include the inversion for anisotropy parameters using log data and the construction of a rock physics template for the evaluation of the Barnett Shale reservoir. Results show reasonable agreement between the P-wave anisotropy parameter ? inverted by the proposed method and those measured from core samples. The constructed rock physics templates are calibrated on well log data, and can be used for the evaluation of porosity, lithology, and brittleness index defined in terms of mineralogy and geomechanical properties of the Barnett Shale. The templates predict that the increase in clay content leads to the increase in Poisson's ratio and the decrease in Young's modulus on each line of constant porosity, which confirms the consistent and reveals quantitative relations of the two ways of defining the brittleness index. Different scenarios of mineralogy substitutions present the varied layout of constant lines on the templates.

Zhiqi Guo; Xiang-Yang Li; Cai Liu

2014-01-01T23:59:59.000Z

419

Adaptive Control Parameters for Dispersal of Multi-Agent Mobile Ad Hoc Network (MANET) Swarms  

SciTech Connect (OSTI)

A mobile ad hoc network is a collection of independent nodes that communicate wirelessly with one another. This paper investigates nodes that are swarm robots with communications and sensing capabilities. Each robot in the swarm may operate in a distributed and decentralized manner to achieve some goal. This paper presents a novel approach to dynamically adapting control parameters to achieve mesh configuration stability. The presented approach to robot interaction is based on spring force laws (attraction and repulsion laws) to create near-optimal mesh like configurations. In prior work, we presented the extended virtual spring mesh (EVSM) algorithm for the dispersion of robot swarms. This paper extends the EVSM framework by providing the first known study on the effects of adaptive versus static control parameters on robot swarm stability. The EVSM algorithm provides the following novelties: 1) improved performance with adaptive control parameters and 2) accelerated convergence with high formation effectiveness. Simulation results show that 120 robots reach convergence using adaptive control parameters more than twice as fast as with static control parameters in a multiple obstacle environment.

Kurt Derr; Milos Manic

2013-11-01T23:59:59.000Z

420

Parameter estimation from flowing fluid temperature logging data in unsaturated fractured rock using multiphase inverse modeling  

SciTech Connect (OSTI)

A simple conceptual model has been recently developed for analyzing pressure and temperature data from flowing fluid temperature logging (FFTL) in unsaturated fractured rock. Using this conceptual model, we developed an analytical solution for FFTL pressure response, and a semianalytical solution for FFTL temperature response. We also proposed a method for estimating fracture permeability from FFTL temperature data. The conceptual model was based on some simplifying assumptions, particularly that a single-phase airflow model was used. In this paper, we develop a more comprehensive numerical model of multiphase flow and heat transfer associated with FFTL. Using this numerical model, we perform a number of forward simulations to determine the parameters that have the strongest influence on the pressure and temperature response from FFTL. We then use the iTOUGH2 optimization code to estimate these most sensitive parameters through inverse modeling and to quantify the uncertainties associated with these estimated parameters. We conclude that FFTL can be utilized to determine permeability, porosity, and thermal conductivity of the fracture rock. Two other parameters, which are not properties of the fractured rock, have strong influence on FFTL response. These are pressure and temperature in the borehole that were at equilibrium with the fractured rock formation at the beginning of FFTL. We illustrate how these parameters can also be estimated from FFTL data.

Mukhopadhyay, S.; Tsang, Y.; Finsterle, S.

2009-01-15T23:59:59.000Z

Note: This page contains sample records for the topic "tox parameter tox" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Site-specific parameter values for the Nuclear Regulatory Commission's food pathway dose model  

SciTech Connect (OSTI)

Routine operations at the Savannah River Site (SRS) in Western South Carolina result in radionuclide releases to the atmosphere and to the Savannah River. The resulting radiation doses to the off-site maximum individual and the off-site population within 80 km of the SRS are estimated on a yearly basis. These estimates are currently generated using dose models prescribed for the commercial nuclear power industry by the Nuclear Regulatory Commission (NRC). The NRC provides default values for dose-model parameters for facilities without resources to develop site-specific values. A survey of land- and water-use characteristics for the Savannah River area has been conducted to determine site-specific values for water recreation, consumption, and agricultural parameters used in the NRC Regulatory Guide 1.109 (1977) dosimetric models. These site parameters include local characteristics of meat, milk, and vegetable production; recreational and commercial activities on the Savannah River; and meat, milk, vegetable, and seafood consumption rates. This paper describes how parameter data were obtained at the Savannah River Site and the impacts of such data on off-site dose. Dose estimates using site-specific parameter values are compared to estimates using the NRC default values.

Hamby, D.M. (Westinghouse Savannah River Company, Savannah River Laboratory, Aiken, SC (United States))

1992-02-01T23:59:59.000Z

422

Predicting anisotropic displacement parameters using molecular dynamics: density functional theory plus dispersion modelling of thermal motion in benzophenone  

Science Journals Connector (OSTI)

The potential for first-princples molecular dynamics simulations to predict thermal-motion parameters has been illustrated by good agreement between theoretical and neutron-diffraction-determined anisotropic displacement parameters of benzophenone.

Reilly, A.M.

2013-04-18T23:59:59.000Z

423

Effect of Temporal Acquisition Parameters on the Image Quality of Ultrasound Axial Strain Time-constant Elastograms  

E-Print Network [OSTI]

constant (TC) have been developed. The axial strain TC is a parameter that is related to the viscoelastic and poroelastic behavior of tissues. Estimation of this parameter can be done using curve fitting methods. However, the effect of temporal...

Varghese, Joshua

2011-08-02T23:59:59.000Z

424

Development and Application of a Procedure to Estimate Overall Building and Ventilation Parameters from Monitored Commercial Building Energy Use  

E-Print Network [OSTI]

This thesis proposes and validates a simplified model appropriate for parameter identification and evaluates several different inverse parameter identification schemes suitable for use when heating and cooling data from a commercial building...

Deng, Song

425

Development and application of a procedure to estimate overall building and ventilation parameters from monitored commercial building energy use  

E-Print Network [OSTI]

This thesis proposes and validates a simplified model appropriate for parameter identification and evaluates several different inverse parameter identification schemes suitable for use when heating and cooling data from a commercial building...

Deng, Song Jiu

2012-06-07T23:59:59.000Z

426

Measurement of cross sections and leptonic forward-backward asymmetries at the Z pole and determination of electroweak parameters  

E-Print Network [OSTI]

Measurement of cross sections and leptonic forward-backward asymmetries at the Z pole and determination of electroweak parameters

Acciarri, M; Adriani, O; Aguilar-Benítez, M; Ahlen, S P; Alcaraz, J; Aloisio, A; Alverson, G; Alviggi, M G; Ambrosi, G; An, Q; Anderhub, H; Anderson, A L; Andreev, V P; Angelescu, T; Antonov, L; Antreasyan, D; Alkhazov, G; Arce, P; Arefev, A; Azemoon, T; Aziz, T; Baba, P V K S; Bagnaia, P; Bakken, J A; Baksay, L; Ball, R C; Banerjee, S; Banicz, K; Bao, J; Barillère, R; Barone, L; Baschirotto, A; Battiston, R; Bay, A; Becattini, F; Becker, U; Behner, F; Bencze, G L; Berdugo, J; Berges, P; Bertucci, B; Betev, B L; Biasini, M; Biland, A; Bilei, G M; Bizzarri, R; Blaising, J J; Bobbink, Gerjan J; Böck, R K; Böhm, A; Borgia, B; Bourilkov, D; Bourquin, Maurice; Boutigny, D; Bouwens, B T; Brambilla, Elena; Branson, J G; Brigljevic, V; Brock, I C; Brooks, M; Bujak, A T; Burger, J D; Burger, W J; Burgos, C; Busenitz, J K; Buytenhuijs, A O; Bykov, A; Cai, X D; Capell, M; Caria, M; Carlino, G; Cartacci, A M; Casaus, J; Castello, R; Cavallo, N; Cerrada-Canales, M; Cesaroni, F; Chamizo-Llatas, M; Chang, Y H; Chaturvedi, U K; Chemarin, M; Chen, A; Chen, C; Chen, G; Chen, G M; Chen, H F; Chen, H S; Chen, M; Chiefari, G; Chien, C Y; Choi, M T; Chung, S; Civinini, C; Clare, I; Clare, R; Coan, T E; Cohn, H O; Coignet, G; Colino, N; Contin, A; Costantini, S; Cotorobai, F; de la Cruz, B; Cui, X T; Cui, X Y; Dai, T S; D'Alessandro, R; De Asmundis, R; Degré, A; Deiters, K; Dénes, E; Denes, P; De Notaristefani, F; DiBitonto, Daryl; Diemoz, M; Dimitrov, H R; Dionisi, C; Dittmar, Michael; Djambazov, L; Dova, M T; Drago, E; Duchesneau, D; Duinker, P; Durán, I; Easo, S; El-Mamouni, H; Engler, A; Eppling, F J; Erné, F C; Extermann, Pierre; Fabbretti, R; Fabre, M; Falciano, S; Fan, S J; Favara, A; Fay, J; Felcini, Marta; Ferguson, T; Fernández, D; Fernández, G; Ferroni, F; Fesefeldt, H S; Fiandrini, E; Field, J H; Filthaut, Frank; Fisher, P H; Forconi, G; Fredj, L; Freudenreich, Klaus; Friebel, W; Fukushima, M; Gailloud, M; Galaktionov, Yu; Gallo, E; Ganguli, S N; García-Abia, P; Gentile, S; Gheordanescu, N; Giagu, S; Goldfarb, S; Gong, Z F; González, E; Gougas, Andreas; Goujon, D; Gratta, Giorgio; Grünewald, M W; Gu, C; Guanziroli, M; Guo, J K; Gupta, V K; Gurtu, A; Gustafson, H R; Gutay, L J; Hangarter, K; Hasan, A; Hauschildt, D; He, C F; He, J T; Hebbeker, T; Hebert, M; Hervé, A; Hilgers, K; Hofer, H; Hoorani, H; Hou, S R; Hu, G; Hu, G Q; Ille, B; Ilyas, M M; Innocente, Vincenzo; Janssen, H; Jin, B N; Jones, L W; Josa-Mutuberria, I; Kasser, A; Khan, R A; Kamyshkov, Yu A; Kapinos, P; Kapustinsky, J S; Karyotakis, Yu; Kaur, M; Khokhar, S; Kienzle-Focacci, M N; Kim, J K; Kim, S C; Kim, Y G; Kinnison, W W; Kirkby, A; Kirkby, D; Kirsch, S; Kittel, E W; Klimentov, A; König, A C; Koffeman, E; Kornadt, O; Koutsenko, V F; Koulbardis, A; Krämer, R W; Kramer, T; Krastev, V R; Krenz, W; Kuijten, H; Kumar, K S; Kunin, A; Ladrón de Guevara, P; Landi, G; Lanske, D; Lanzano, S; Lebedev, A; Lebrun, P; Lecomte, P; Lecoq, P; Le Coultre, P; Lee, D M; Lee Jae Sik; Lee, K Y; Leedom, I D; Leggett, C; Le Goff, J M; Leiste, R; Lenti, M; Leonardi, E; Levchenko, P M; Li Chuan; Li, H T; Li, P J; Liao, J Y; Lin, W T; Lin, Z Y; Linde, Frank L; Lindemann, B; Lista, L; Liu, Y; Lohmann, W; Longo, E; Lu, W; Lü, Y S; Lubbers, J M; Lübelsmeyer, K; Luci, C; Luckey, D; Ludovici, L; Luminari, L; Lustermann, W; Ma, J M; Ma Wen Gan; MacDermott, M; Malgeri, L; Malik, R; Malinin, A; Maña, C; Maolinbay, M; Marchesini, P A; Marion, F; Marin, A; Martin, J P; Marzano, F; Massaro, G G G; Mazumdar, K; McBride, P; McMahon, T; McNally, D; Merk, M; Merola, L; Meschini, M; Metzger, W J; Mi, Y; Mihul, A; Mills, G B; Mir, Y; Mirabelli, G; Mnich, J; Möller, M; Monteleoni, B; Morand, R; Morganti, S; Moulai, N E; Mount, R; Müller, S; Nagy, E; Napolitano, M; Nessi-Tedaldi, F; Newman, H; Niaz, M A; Nippe, A; Nowak, H; Organtini, G; Pandoulas, D; Paoletti, S; Paolucci, P; Pascale, G; Passaleva, G; Patricelli, S; Paul, T; Pauluzzi, M; Paus, C; Pauss, Felicitas; Pei, Y J; Pensotti, S; Perret-Gallix, D; Perrier, J; Pevsner, A; Piccolo, D; Pieri, M; Pinto, J C; Piroué, P A; Plasil, F; Plyaskin, V; Pohl, M; Pozhidaev, V; Postema, H; Qi, Z D; Qian, J M; Qureshi, K N; Raghavan, R; Rahal-Callot, G; Rancoita, P G; Rattaggi, M; Raven, G; Razis, P A; Read, K; Redaelli, M; Ren, D; Ren, Z; Rescigno, M; Reucroft, S; Ricker, A; Riemann, S; Riemers, W; Riles, K; Rind, O; Rizvi, H A; Ro, S; Robohm, A; Rodríguez-Calonge, F J; Roe, B P; Röhner, M; Röhner, S; Romero, L; Rosier-Lees, S; Rosmalen, R; Rosselet, P; Van Rossum, W; Roth, S; Rubbia, André; Rubio, Juan Antonio; Rykaczewski, H; Sachwitz, M; Salicio, J; Salicio, J M; Sánchez, E; Sanders, G S; Santocchia, A; Sarakinos, M E; Sartorelli, G; Sassowsky, M; Sauvage, G; Schäfer, C; Shchegelskii, V; Schmitz, D; Schmitz, P; Schneegans, M; Scholz, N; Schopper, Herwig Franz; Schotanus, D J; Shotkin, S

1994-01-01T23:59:59.000Z

427

Effect of Key Parameters on the Photocatalytic Oxidation of Toluene at Low  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Effect of Key Parameters on the Photocatalytic Oxidation of Toluene at Low Effect of Key Parameters on the Photocatalytic Oxidation of Toluene at Low Concentrations in Air under 254 + 185 nm UV Irradiation Title Effect of Key Parameters on the Photocatalytic Oxidation of Toluene at Low Concentrations in Air under 254 + 185 nm UV Irradiation Publication Type Journal Article Year of Publication 2010 Authors Quici, Natalia, María L. Vera, Hyeok Choi, Gianluca Li Puma, Dionysios D. Dionysiou, Marta I. Litter, and Hugo Destaillats Journal Applied Catalysis B: Environmental Volume 95 Issue 3-4 Pagination 312-319 Date Published 04/2010 Keywords air treatment, environmental chemistry, exposure & risk group, heterogeneous photocatalysis, indoor environment department, indoors, oxidation, photocatalytic, tio2, titania, toluene, uvpco, volatile organic compounds

428

Evaluation of testing and reservoir parameters in geothermal wells at Raft  

Open Energy Info (EERE)

testing and reservoir parameters in geothermal wells at Raft testing and reservoir parameters in geothermal wells at Raft River and Boise, Idaho Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Evaluation of testing and reservoir parameters in geothermal wells at Raft River and Boise, Idaho Details Activities (1) Areas (1) Regions (0) Abstract: Evaluating the Raft River and Boise, Idaho, resources by pump and injection tests require information on the geology, geochemistry, surficial and borehole geophysics, and well construction and development methods. Nonideal test conditions and a complex hydrogeologic system prevent the use of idealized mathematical models for data evaluation in a one-phase fluid system. An empirical approach is successfully used since it was observed that all valid pump and injection well pressure data for constant discharge

429

Foot pressure distribution differences between young adult and older subject: a biomechanical parameters analysis  

Science Journals Connector (OSTI)

Foot problems are common in older people and altered biomechanical parameters under the foot sole may lead to ulceration. Therefore this study evaluates foot pressure distribution parameter Power Ratio (PR) in young adult and older subjects during standing. We acquired foot pressure distribution during standing using PedoPowerGraph(P) system for 20 subjects with age range from 30 to 65 years. Various pedopowergraphic parameters were evaluated and the results were analysed. We observe statistical significant differences in mean PR value (p foot and fore foot region. In addition, older subject had lower mean PR value in medial foot region and higher mean PR value in lateral fore foot region as compared to young adult. Our findings indicate that increase in lateral forefoot and hind foot PR value is prevalent in older subject and may be responsible for higher incidence of foot problems.

R. Periyasamy; Sonal Atreya; Sneh Anand

2013-01-01T23:59:59.000Z

430

Impact of Baryonic Processes on Weak Lensing Cosmology: Higher-Order Statistics and Parameter Bias  

E-Print Network [OSTI]

We study the impact of baryonic physics on cosmological parameter estimation with weak lensing surveys. We run a set of cosmological hydrodynamics simulations with different galaxy formation models. We then perform ray-tracing simulations through the total matter density field to generate 100 independent convergence maps of 25 deg$^2$ field-of-view, and use them to examine the ability of the following three lensing statistics as cosmological probes; power spectrum, peak counts, and Minkowski Functionals. For the upcoming wide-field observations such as Subaru Hyper Suprime-Cam (HSC) survey with a sky coverage of 1400 deg$^2$, the higher-order statistics provide tight constraints on the matter density, density fluctuation amplitude, and dark energy equation of state, but appreciable parameter bias is induced by the baryonic processes such as gas cooling and stellar feedback. When we use power spectrum, peak counts, and Minkowski Functionals, the relative bias in the dark energy equation of state parameter $w$ ...

Osato, Ken; Yoshida, Naoki

2015-01-01T23:59:59.000Z

431

Determining stellar atmospheric parameters and chemical abundances of FGK stars with iSpec  

E-Print Network [OSTI]

Context. An increasing number of high-resolution stellar spectra is available today thanks to many past and ongoing extensive spectroscopic surveys. Consequently, the scientific community needs automatic procedures to derive atmospheric parameters and individual element abundances. Aims. Based on the widely known SPECTRUM code by R. O. Gray, we developed an integrated spectroscopic software framework suitable for the determination of atmospheric parameters (i.e., effective temperature, surface gravity, metallicity) and individual chemical abundances. The code, named iSpec and freely distributed, is written mainly in Python and can be used on different platforms. Methods. iSpec can derive atmospheric parameters by using the synthetic spectral fitting technique and the equivalent width method. We validated the performance of both approaches by developing two different pipelines and analyzing the Gaia FGK benchmark stars spectral library. The analysis was complemented with several tests designed to assess other ...

Blanco-Cuaresma, S; Heiter, U; Jofré, P

2014-01-01T23:59:59.000Z

432

Modified Brans-Dicke theory with space-time anisotropic parameters  

E-Print Network [OSTI]

We consider the ADM formalism of the Brans-Dicke theory and propose an anisotropic extension of the theory by introducing five free parameters. We find that the resulting theory reveals many interesting aspects which are not present in the original BD theory. We first discuss the ghost instability and strong coupling problems which are present in the gravity theory without the full diffeomorphism symmetry and show that they can be avoided in a region of the parameter space. We also perform the post-Newtonian approximation and show that the constraint of the Brans-Dicke parameter $\\omega_{{\\rm BD}}$ being large to be consistent with the solar system observations could be evaded in the extended theory. We also discuss that accelerating Universe can be achieved without the need of the potential for the Brans-Dicke scalar.

Taeyoon Moon; Phillial Oh

2014-02-22T23:59:59.000Z

433

Robust parameter estimation for compact binaries with ground-based gravitational-wave observations using LALInference  

E-Print Network [OSTI]

The Advanced LIGO and Advanced Virgo gravitational wave (GW) detectors will begin operation in the coming years, with compact binary coalescence events a likely source for the first detections. The gravitational waveforms emitted directly encode information about the sources, including the masses and spins of the compact objects. Recovering the physical parameters of the sources from the GW observations is a key analysis task. This work describes the LALInference software library for Bayesian parameter estimation of compact binary coalescence (CBC) signals, which builds on several previous methods to provide a well-tested toolkit which has already been used for several studies. We are able to show using three independent sampling algorithms that our implementation consistently converges on the same results, giving confidence in the parameter estimates thus obtained. We demonstrate this with a detailed comparison on three compact binary systems: a binary neutron star, a neutron star-black hole binary and a bin...

Veitch, John; Farr, Benjamin; Farr, Will M; Graff, Philip; Vitale, Salvatore; Aylott, Ben; Blackburn, Kent; Christensen, Nelson; Coughlin, Michael; Del Pozzo, Walter; Feroz, Farhan; Gair, Jonathan; Haster, Carl-Johan; Kalogera, Vicky; Littenberg, Tyson; Mandel, Ilya; O'Shaughnessy, Richard; Pitkin, Matthew; Rodriguez, Carl; Röver, Christian; Sidery, Trevor; Smith, Rory; Van Der Sluys, Marc; Vecchio, Alberto; Vousden, Will; Wade, Leslie

2014-01-01T23:59:59.000Z

434

Basic Parameter Estimation of Binary Neutron Star Systems by the Advanced LIGO/Virgo Network  

E-Print Network [OSTI]

Within the next five years, it is expected that the Advanced LIGO/Virgo network will have reached a sensitivity sufficient to enable the routine detection of gravitational waves. Beyond the initial detection, the scientific promise of these instruments relies on the effectiveness of our physical parameter estimation capabilities. The majority of this effort has been towards the detection and characterization of gravitational waves from compact binary coalescence, e.g. the coalescence of binary neutron stars. While several previous studies have investigated the accuracy of parameter estimation with advanced detectors, the majority have relied on approximation techniques such as the Fisher Matrix. Here we report the statistical uncertainties that will be achievable for optimal detection candidates (SNR = 20) using the full parameter estimation machinery developed by the LIGO/Virgo Collaboration via Markov-Chain Monte Carlo methods. We find the recovery of the individual masses to be fractionally within 9% (15%)...

Rodriguez, Carl L; Raymond, Vivien; Farr, Will M; Littenberg, Tyson; Fazi, Diego; Kalogera, Vicky

2013-01-01T23:59:59.000Z

435

Testing scalar-tensor theories and PPN parameters in Earth orbit  

E-Print Network [OSTI]

We compute the PPN parameters $\\gamma$ and $\\beta$ for general scalar-tensor theories in the Einstein frame, which we compare to the existing PPN formulation in the Jordan frame for alternative theories of gravity. This computation is important for scalar-tensor theories that are expressed in the Einstein frame, such as chameleon and symmetron theories, which can incorporate hiding mechanisms that predict environment-dependent PPN parameters. We introduce a general formalism for scalar-tensor theories and constrain it using the limit on $\\gamma$ given by the Cassini experiment. In particular we discuss massive Brans-Dicke scalar fields for extended sources. Next, using a recently proposed Earth satellite experiment, in which atomic clocks are used for spacecraft tracking, we compute the observable perturbations in the redshift induced by PPN parameters deviating from their general relativistic values. Our estimates suggest that $|\\gamma - 1| \\sim |\\beta -1| \\sim 10^{-6}$ may be detectable by a satellite that ...

Schärer, Andreas; Bondarescu, Ruxandra; Jetzer, Philippe; Lundgren, Andrew

2014-01-01T23:59:59.000Z

436

Four free parameter empirical parametrization of glow discharge Langmuir probe data  

SciTech Connect (OSTI)

For the purpose of developing a simple empirical model capable of producing the electron energy distribution function (EEDF) from Langmuir probe I-V characteristics, a four parameter empirical equation that fits most Langmuir probe experimental data is suggested. The four free fitting parameters are related to the main plasma properties. These properties include the ion and electron saturation currents and the plasma electron temperature. This equation can be readily differentiated twice to give the EEDF according to the Druyvesteyn formula. Furthermore, a MATLAB platform based computer code based on this model yielding results for the plasma potential and all plasma parameters mentioned above is presented. The information given below can be used to write other computer codes for the same purpose in any other programming language.

Azooz, A. A. [Department of Physics, College of Science, Mosul University, Mosul-Iraq (Iraq)

2008-10-15T23:59:59.000Z

437

Characterization of elevated temperature crack growth in Hastelloy-X using integral parameters  

SciTech Connect (OSTI)

Linear elastic fracture mechanics approaches are not suitable for prediction of fatigue crack growth in the nonlinear regime at elevated temperatures. The objective of this paper is to investigate the ability of the integral parameters by Blackburn (J*), by Kishimoto et al. ({cflx J}), and by Atluri et al. ({Delta}Tp*, {Delta}Tp) to correlate crack growth data of Hastelloy-X at elevated temperatures under nominally elastic and nominally plastic loading. Crack growth is analyzed using a finite element method, and the integral parameters are computed from the results of analysis. The experimental crack growth rates are correlated with these parameters. It is found that J*, {cflx J}, and {Delta}Tp* can correlate crack growth data within an acceptable accuracy.

Kim, K.S. [Pohang Univ. of Science and Technology (Korea, Republic of). Dept. of Mechanical Engineering; Van Stone, R.H. [General Electric Aircraft Engines, Cincinnati, OH (United States)

1995-07-01T23:59:59.000Z

438

Energy dependence of slope parameter in elastic nucleon-nucleon scattering  

E-Print Network [OSTI]

The study of slope parameter is presented for elastic proton-proton and antiproton-proton scattering with taking into account the resent experimental data at high energies. The expanded logarithmic approximations allow the description of the experimental slopes in all available energy range reasonably. Accounting for the LHC results leads to the dramatic change of behavior of the quadratic in logarithm approximation at high energies and to the closer trends for all fitting functions under study in comparison with the analysis at collision energies up to the 200 GeV. The estimations of the asymptotic shrinkage parameter $\\alpha'_{\\cal{P}}$ are discussed. Predictions for diffraction slope parameter are obtained for some proton-proton and antiproton-proton facilities.

Okorokov, V A

2015-01-01T23:59:59.000Z

439

Review and analysis of parameters for assessing transport of environmentally released radionuclides through agriculture  

SciTech Connect (OSTI)

Most of the default parameters incorporated into the TERRA computer code are documented including a literature review and systematic analysis of element-specific transfer parameters B/sub v/, B/sub r/, F/sub m/, F/sub f/, and K/sub d/. This review and analysis suggests default values which are consistent with the modeling approaches taken in TERRA and may be acceptable for most assessment applications of the computer code. However, particular applications of the code and additional analysis of elemental transport may require alternative default values. Use of the values reported herein in other computer codes simulating terrestrial transport is not advised without careful interpretation of the limitations and scope these analyses. An approach to determination of vegetation-specific interception fractions is also discussed. The limitations of this approach are many, and its use indicates the need for analysis of deposition, interception, and weathering processes. Judgement must be exercised in interpretation of plant surface concentrations generated. Finally, the location-specific agricultural, climatological, and population parameters in the default SITE data base documented. These parameters are intended as alternatives to average values currently used. Indeed, areas in the United States where intensive crop, milk, or beef production occurs will be reflected in the parameter values as will areas where little agricultural activity occurs. However, the original information sources contained some small error and the interpolation and conversion methods used will add more. Parameters used in TERRA not discussed herein are discussed in the companion report to this one - ORNL-5785. In the companion report the models employed in and the coding of TERRA are discussed. These reports together provide documentation of the TERRA code and its use in assessments. 96 references, 78 figures, 21 tables.

Baes, C.F. III; Sharp, R.D.; Sjoreen, A.L.; Shor, R.W.

1984-09-01T23:59:59.000Z

440

Influence of composition on microstructural parameters of single crystal nickel-base superalloys  

SciTech Connect (OSTI)

Fourteen nickel-base superalloy single crystals containing a range of chromium (Cr), cobalt (Co), molybdenum (Mo), and rhenium (Re) levels, and fixed amounts of aluminum (Al) and tantalum (Ta), were examined to determine the effect of bulk composition on basic microstructural parameters, including {gamma} Prime solvus, {gamma} Prime volume fraction, topologically close-packed (TCP) phases, {gamma} and {gamma} Prime phase chemistries, and {gamma}-{gamma} Prime lattice mismatch. Regression models describing the influence of bulk alloy composition on each of the microstructural parameters were developed and compared to predictions by a commercially-available software tool that used computational thermodynamics. Co produced the largest change in {gamma} Prime solvus over the wide compositional range explored and Mo produced the biggest effect on the {gamma} lattice parameter over its range, although Re had a very potent influence on all microstructural parameters investigated. Changing the Cr, Co, Mo, and Re contents in the bulk alloy had an impact on their concentrations in the {gamma} matrix and to a smaller extent in the {gamma} Prime phase. The software tool under-predicted {gamma} Prime solvus temperatures and {gamma} Prime volume fractions, and over-predicted TCP phase volume fractions at 982 Degree-Sign C. However, the statistical regression models provided excellent estimations of the microstructural parameters and demonstrated the usefulness of such formulas. - Highlights: Black-Right-Pointing-Pointer Effects of Cr, Co, Mo, and Re on microstructure in new low density superalloys Black-Right-Pointing-Pointer Co produced a large change in {gamma} Prime solvus; Mo had a large effect on lattice mismatch. Black-Right-Pointing-Pointer Re exhibited very potent influence on all microstructural parameters was investigated. Black-Right-Pointing-Pointer {gamma} and {gamma} Prime phase chemistries both varied with temperature and alloy composition. Black-Right-Pointing-Pointer Computational thermodynamic modeling tool did not accurately predict microstructure.

MacKay, R.A., E-mail: Rebecca.A.MacKay@nasa.gov [NASA Glenn Research Center, 21000 Brookpark Rd., Cleveland, Ohio 44135 (United States); Gabb, T.P. [NASA Glenn Research Center, 21000 Brookpark Rd., Cleveland, Ohio 44135 (United States); Garg, A. [NASA Glenn Research Center, 21000 Brookpark Rd., Cleveland, Ohio 44135 (United States); University of Toledo, 2801 W. Bancroft, Toledo, Ohio 43606 (United States); Rogers, R.B.; Nathal, M.V. [NASA Glenn Research Center, 21000 Brookpark Rd., Cleveland, Ohio 44135 (United States)

2012-08-15T23:59:59.000Z

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441

CALIBRATIONS OF ATMOSPHERIC PARAMETERS OBTAINED FROM THE FIRST YEAR OF SDSS-III APOGEE OBSERVATIONS  

SciTech Connect (OSTI)

The Sloan Digital Sky Survey III (SDSS-III) Apache Point Observatory Galactic Evolution Experiment (APOGEE) is a three-year survey that is collecting 10{sup 5} high-resolution spectra in the near-IR across multiple Galactic populations. To derive stellar parameters and chemical compositions from this massive data set, the APOGEE Stellar Parameters and Chemical Abundances Pipeline (ASPCAP) has been developed. Here, we describe empirical calibrations of stellar parameters presented in the first SDSS-III APOGEE data release (DR10). These calibrations were enabled by observations of 559 stars in 20 globular and open clusters. The cluster observations were supplemented by observations of stars in NASA's Kepler field that have well determined surface gravities from asteroseismic analysis. We discuss the accuracy and precision of the derived stellar parameters, considering especially effective temperature, surface gravity, and metallicity; we also briefly discuss the derived results for the abundances of the ?-elements, carbon, and nitrogen. Overall, we find that ASPCAP achieves reasonably accurate results for temperature and metallicity, but suffers from systematic errors in surface gravity. We derive calibration relations that bring the raw ASPCAP results into better agreement with independently determined stellar parameters. The internal scatter of ASPCAP parameters within clusters suggests that metallicities are measured with a precision better than 0.1 dex, effective temperatures better than 150 K, and surface gravities better than 0.2 dex. The understanding provided by the clusters and Kepler giants on the current accuracy and precision will be invaluable for future improvements of the pipeline.

Mészáros, Sz.; Allende Prieto, C. [Instituto de Astrofísica de Canarias (IAC), E-38200 La Laguna, Tenerife (Spain); Holtzman, J. [New Mexico State University, Las Cruces, NM 88003 (United States); García Pérez, A. E.; Chojnowski, S. D.; Hearty, F. R.; Majewski, S. R. [Department of Astronomy, University of Virginia, Charlottesville, VA 22904-4325 (United States); Schiavon, R. P. [Astrophysics Research Institute, Liverpool John Moores University, Egerton Wharf, Birkenhead, Wirral CH41 1LD (United Kingdom); Basu, S. [Department of Astronomy, Yale University, P.O. Box 208101, New Haven, CT 06520-8101 (United States); Bizyaev, D. [Apache Point Observatory, P.O. Box 59, Sunspot, NM 88349-0059 (United States); Chaplin, W. J.; Elsworth, Y. [University of Birmingham, School of Physics and Astronomy, Edgbaston, Birmingham B15 2TT (United Kingdom); Cunha, K. [Steward Observatory, University of Arizona, Tucson, AZ 85721 (United States); Epstein, C.; Johnson, J. A. [Department of Astronomy, The Ohio State University, Columbus, OH 43210 (United States); Frinchaboy, P. M. [Texas Christian University, Fort Worth, TX 76129 (United States); García, R. A. [Laboratoire AIM, CEA/DSM-CNRS-Université Paris Diderot, IRFU/SAp, Centre de Saclay, F-91191 Gif-sur-Yvette Cedex (France); Hekker, S. [Astronomical Institute ''Anton Pannekoek'', University of Amsterdam, Science Park 904, 1098 XH Amsterdam (Netherlands); Kallinger, T. [Institute for Astronomy, University of Vienna, Türkenschanzstrasse 17, A-1180 Vienna (Austria); Koesterke, L. [Texas Advanced Computing Center, University of Texas, Austin, TX 78759 (United States); and others

2013-11-01T23:59:59.000Z

442

Constraining the dynamical dark energy parameters: Planck-2013 vs WMAP9  

E-Print Network [OSTI]

We determine the best-fit values and confidence limits for dynamical dark energy parameters together with other cosmological parameters on the basis of different datasets which include WMAP9 or Planck-2013 results on CMB anisotropy, BAO distance ratios from recent galaxy surveys, magnitude-redshift relations for distant SNe Ia from SNLS3 and Union2.1 samples and the HST determination of the Hubble constant. We use a Markov Chain Monte Carlo routine to map out the likelihood in the multi-dimensional parameter space. We show that the most precise determination of cosmological parameters with the narrowest confidence limits is obtained for the Planck{+}HST{+}BAO{+}SNLS3 dataset. The best-fit values and 2$\\sigma$ confidence limits for cosmological parameters in this case are $\\Omega_{de}=0.718\\pm0.022$, $w_0=-1.15^{+0.14}_{-0.16}$, $c_a^2=-1.15^{+0.02}_{-0.46}$, $\\Omega_bh^2=0.0220\\pm0.0005$, $\\Omega_{cdm}h^2=0.121\\pm0.004$, $h=0.713\\pm0.027$, $n_s=0.958^{+0.014}_{-0.010}$, $A_s=(2.215^{+0.093}_{-0.101})\\cdot10^{-9}$, $\\tau_{rei}=0.093^{+0.022}_{-0.028}$. For this dataset, the $\\Lambda$CDM model is just outside the 2$\\sigma$ confidence region, while for the dataset WMAP9{+}HST{+}BAO{+}SNLS3 the $\\Lambda$CDM model is only 1$\\sigma$ away from the best fit. The tension in the determination of some cosmological parameters on the basis of two CMB datasets WMAP9 and Planck-2013 is highlighted.

B. Novosyadlyj; O. Sergijenko; R. Durrer; V. Pelykh

2013-12-23T23:59:59.000Z

443

AM1/d Parameters for Magnesium in Metalloenzymes Petra Imhof, Frank Noe, Stefan Fischer, and Jeremy C. Smith*,  

E-Print Network [OSTI]

AM1/d Parameters for Magnesium in Metalloenzymes Petra Imhof, Frank Noe´, Stefan Fischer parameters are derived for magnesium, optimized for modeling reactions in metalloenzymes. The parameters calculated with density functional theory. The training set consists of compounds with magnesium coordinated

444

Broadband calibrated scattering parameters characterization of a superconducting quantum interference device amplifier  

SciTech Connect (OSTI)

In this work, we characterize the 2-port scattering parameters of a superconducting quantum interference device amplifier at {approx}20 mK over several gigahertz of bandwidth. The measurement reference plane is positioned on a 6.25 {Omega} microstrip line situated directly at the input and output of the device by means of a thru-reflect-line cryogenic calibration procedure. From the scattering parameters, we derive the device available power gain, isolation, and input impedance over the 2-8 GHz range. This measurement methodology provides a path towards designing wide-band matching circuits for low impedance superconducting amplifiers operating at dilution refrigerator temperatures.

Ranzani, Leonardo [National Institute of Standards and Technology, Boulder, Colorado 80305 (United States); University of Colorado at Boulder, Boulder, Colorado 80309 (United States); Spietz, Lafe; Aumentado, Jose [National Institute of Standards and Technology, Boulder, Colorado 80305 (United States)

2013-07-08T23:59:59.000Z

445

PRACTICAL APPLICATION OF THE SINGLE-PARAMETER SUBCRITICAL MASS LIMIT FOR PLUTONIUM METAL  

SciTech Connect (OSTI)

According to ANS-8.1, operations with fissile materials can be performed safely by complying with any of the listed single-parameter subcritical limits. For metallic units, when interspersed moderators are present, the mass limits apply to a single piece having no concave surfaces. On a practical level, when has any operation with fissile metal involved a single piece and absolutely no moderating material, e.g., water, oil, plastic, etc.? This would be rare. This paper explores the application of the single-parameter plutonium metal mass limit for realistic operational environments.

MITCHELL, MARK VON [Los Alamos National Laboratory

2007-01-10T23:59:59.000Z

446

Observations of Seyferts by OSSE and parameters of their X-ray/gamma-ray sources  

E-Print Network [OSTI]

We present a summary of spectra of Seyfert galaxies observed by the OSSE detector aboard Compton Gamma Ray Observatory. We obtain average spectra of Seyferts of type 1 and 2, and find they are well fitted by thermal Comptonization. We present detailed parameter ranges for the plasma temperature and the Compton parameter in the case of spherical and slab geometries. We find both the average and individual OSSE spectra of Seyfert 2s are significantly harder than those of Seyfert 1s, which difference can be due to anisotropy of Compton reflection and/or Thomson-thick absorption.

Andrzej A. Zdziarski; Juri Poutanen; W. Neil Johnson

2000-06-11T23:59:59.000Z

447

Slurry parameters effect on Chemicalâ??Mechanical Planarisation (CMP) of deposited silver (Ag) on chips  

Science Journals Connector (OSTI)

Ag-deposited chips composed of electrodes, which are spaced apart by photoresist, are polished by Chemical-Mechanical Planarisation (CMP). We optimise the polishing process parameters including processing pressure, rotating speed, slurry supplying rate, etc., and examine the effect of some slurry parameters such as abrasives, oxidisers, corrosives, complexing agents and surfactants and get optimum Ag CMP slurry with high Material Removal Rate (MRR) and low average roughness (Ra). Low vertical distance between Ag and photoresist is obtained by optimising metal Ag MRR and controlling polishing end-point exactly. CMP mechanism and relationship between surface defects and additives structures are elementary discussed too.

Y.J. Dai; G.S. Pan; H.F. Pei; J.Z. Sun; Y. Liu; H. Du

2010-01-01T23:59:59.000Z

448

Grand Unified Yukawa Matrix Ansatz: The Standard Model Fermion Mass, Quark Mixing and CP Violation Parameters  

E-Print Network [OSTI]

We propose a new mass matrix ansatz: At the grand unified (GU) scale, the standard model (SM) Yukawa coupling matrix elements are integer powers of the square root of the GU gauge coupling constant \\varepsilon \\equiv \\sqrt{\\alpha_{\\text{GU}}}, multiplied by order unity random complex numbers. It relates the hierarchy of the SM ermion masses and quark mixings to the gauge coupling constants, greatly reducing the SM parameters, and can give good fitting results of the SM fermion mass, quark mixing and CP violation parameters. This is a neat but very effective ansatz.

Yong-Chao Zhang; De-Hai Zhang

2009-10-20T23:59:59.000Z

449

Power density axial oscillations induced by Xenon dynamics: Parameter identification via genetic algorithms  

Science Journals Connector (OSTI)

In this paper we describe the axial flux oscillations in \\{PWRs\\} by means of the Onega and Kisner model (1978), a two-point xenon oscillation model based on the one-group, one-dimensional neutron diffusion equation with nonlinear power reactivity feedback and on the nonlinear xenon and iodine balance equations. We investigate the feasibility of using genetic algorithms for estimating the effective nuclear parameters involved. This approach has the advantage of allowing the periodic re-estimation of the effective parameter values pertaining to each reactor on the basis of its recent history. By so doing, other effects, such as the burn up, are automatically taken into account.

M. Marseguerra; E. Zio; G. Torri

2003-01-01T23:59:59.000Z

450

Power spectrum of large-scale magnetic fields from Gravitoelectromagnetic inflation with a decaying cosmological parameter  

E-Print Network [OSTI]

Introducing a variable cosmological parameter $\\Lambda (t)$ in a geometrical manner from a 5D Riemann-flat metric, we investigate the origin and evolution of primordial magnetic fields in the early universe, when the expansion is governed by a cosmological parameter $\\Lambda (t)$ that decreases with time. Using the gravitoelectromagnetic inflationary formalism, but without the Feynman gauge, we obtain the power of spectrums for large-scale magnetic fields and the inflaton field fluctuations during inflation. A very important fact is that our formalism is {\\em naturally non-conformally invariant}.

Federico Agustin Membiela; Mauricio Bellini

2007-12-18T23:59:59.000Z

451

Skyrme, Peierls-Yoccoz, and statistical approximations for the inertia parameter  

Science Journals Connector (OSTI)

Angular momentum operator identities are used to show that Skyrme's expression can be written using the y component of angular momentum only. It is shown that the Gaussian approximation for the matrix element of Jy4 leads to the Peierls-Yoccoz expression. A new approximation based on the theory of probability is introduced. The numerical calculations for the 2s-1d shell nuclei show that the inverse of the inertia parameter using the statistical approximation is much closer to Skyrme's value than the one given by the Peierls-Yoccoz approximation.[NUCLEAR STRUCTURE Approximations for nuclear inertia parameter.

Nazakat Ullah

1978-02-01T23:59:59.000Z

452

Parameter Estimation in Hybrid Active-Passive Laminated Sandwich Composite Structures  

SciTech Connect (OSTI)

In this article we present recent developments regarding parameter estimation in sandwich structures with viscoelastic frequency dependent core and elastic laminated skin layers, with piezoelectric patch sensors and actuators bonded to the exterior surfaces of the sandwich. The frequency dependent viscoelastic properties of the core material are modelled using fractional derivative models, with unknown parameters that are to be estimated by an inverse technique, using experimentally measured natural frequencies and associated modal loss factors. The inverse problem is formulated as a constrained minimization problem, and gradient based optimization techniques are employed. An application case is presented and discussed, focused on identification of viscoelastic frequency dependent core material properties.

Araujo, A. L. [ESTIG-Polytechnic Institute of Braganca, Campus de Sta. Apolonia, Apartado 1134, 5301-857 Braganca (Portugal); Mota Soares, C. M.; Mota Soares, C. A. [IDMEC/IST-Technical University of Lisbon, Av. Rovisco Pais, 1049-001 Lisbon (Portugal); Herskovits, J. [COPPE/UFRJ-Federal University of Rio de Janeiro, Caixa Postal 68503, 21945-970 Rio de Janeiro (Brazil)

2010-05-21T23:59:59.000Z

453

Existence of two sets of kinetic parameters in the correlation of the hydrogen electrode reaction  

SciTech Connect (OSTI)

It has been demonstrated that the dependence of the current density on overpotential for the hydrogen electrode reaction described through the Volmer-Heyrovsky-Tafel mechanism can be correlated by two different sets of the kinetic parameters. Such sets lead to two different dependencies of the surface coverage on overpotential, while a unique dependence of the corresponding pseudocapacitance of adsorption is obtained. The expressions that relate both sets of kinetic parameters have been established and analyzed for the simultaneous occurrence of the three steps and for the different kinetic routes.

Chialvo, M.R.G. de; Chialvo, A.C.

2000-05-01T23:59:59.000Z

454

Mixed (s+id)-wave order parameters in the Van Hove scenario  

Science Journals Connector (OSTI)

In the Van Hove scenario including orthorhombic distortion effect, we develop a pair of coupled gap equations for the mixed (s+id)-wave order parameter. It is found that a mixed s+id symmetry state is realized in a certain range of relative strength of the s and d interactions, and there are two second-order transitions between the mixed and the pure symmetry states. Particular attention is paid to the temperature dependence of two components in the mixed order parameter as well as their evolution from a pure s to a pure d symmetry state.

M. Liu; D. Y. Xing; Z. D. Wang

1997-02-01T23:59:59.000Z

455

Parameter-oriented Visualization of a Modelica Model with a Numerical Data Integration Feature  

Science Journals Connector (OSTI)

Abstract In model-based development, designers develop models of complex engineered systems from combinations of building blocks, and then simulate the system behavior. The design process is assisted by multi-domain system modeling and simulation tools. These tools should be able to allow users to understand and validate the simulated behavior in terms of parameters and their dependencies with effective use of quantitative information, such as simulation results, experiments, and catalog data, in the system model. This paper proposes a tool that displays the parameters and their dependencies in system models written in Modelica, and integrates these models with numerical data. The latter feature is useful for evaluating quantitative performance.

Hitoshi Komoto; Shinsuke Kondoh; Keijiro Masui; Akira Tezuka

2014-01-01T23:59:59.000Z

456

Effects of the interaction between dark energy and dark matter on cosmological parameters  

E-Print Network [OSTI]

We examine the effects of possible phenomenological interactions between dark energy and dark matter on cosmological parameters and their efficiency in solving the coincidence problem. We work with two simple parameterizations of the dynamical dark energy equation of state and the constant dark energy equation of state. Using observational data coming from the new 182 Gold type Ia supernova samples, the shift parameter of the Cosmic Microwave Background given by the three-year Wilkinson Microwave Anisotropy Probe observations, and the baryon acoustic oscillation measurement from the Sloan Digital Sky Survey, we perform a statistical joint analysis of different forms of phenomenological interactions between dark energy and dark matter.

Jian-Hua He; Bin Wang

2008-01-28T23:59:59.000Z

457

Effects of the interaction between dark energy and dark matter on cosmological parameters  

SciTech Connect (OSTI)

We examine the effects of possible phenomenological interactions between dark energy and dark matter on cosmological parameters and their efficiency in solving the coincidence problem. We work with two simple parameterizations of the dynamical dark energy equation of state and the constant dark energy equation of state. Using observational data coming from the new 182 Gold type Ia supernova samples, the shift parameter of the Cosmic Microwave Background given by the three-year Wilkinson Microwave Anisotropy Probe observations and the baryon acoustic oscillation measurement from the Sloan Digital Sky Survey, we perform a statistical joint analysis of different forms of phenomenological interaction between dark energy and dark matter.

He, Jian-Hua; Wang, Bin, E-mail: 062019010@fudan.edu.cn, E-mail: wangb@fudan.edu.cn [Department of Physics, Fudan University, Shanghai 200433 (China)] [Department of Physics, Fudan University, Shanghai 200433 (China)

2008-06-15T23:59:59.000Z

458

Pharmacokinetic calculator program for generation of initial parameter estimates from a three-compartment infusion model  

Science Journals Connector (OSTI)

A polyexponential curve-stripping program, kin, is described for use on the HP-41CV programmable calculator. The program may be used in the analysis of plasma-concentration-time curves for a three-compartment intravenous bolus or infusion model with linear elimination processes. The coefficients and hybrid rate constants of the exponential function are then used to compute pharmacokinetic parameters (volume of the central compartment, intercompartmental rate transfer constants), which may be used as initial estimates of model parameters in non-linear regression curve-fitting procedures.

James D. Henderson; Richard D. Olson; William R. Ravis

1985-01-01T23:59:59.000Z

459

Sensitivity of Surface Flux Simulations to Hydrologic Parameters Based on an Uncertainty Quantification Framework Applied to the Community Land Model  

SciTech Connect (OSTI)

Uncertainties in hydrologic parameters could have significant impacts on the simulated water and energy fluxes and land surface states, which will in turn affect atmospheric processes and the carbon cycle. Quantifying such uncertainties is an important step toward better understanding and quantification of uncertainty of integrated earth system models. In this paper, we introduce an uncertainty quantification (UQ) framework to analyze sensitivity of simulated surface fluxes to selected hydrologic parameters in the Community Land Model (CLM4) through forward modeling. Thirteen flux tower footprints spanning a wide range of climate and site conditions were selected to perform sensitivity analyses by perturbing the parameters identified. In the UQ framework, prior information about the parameters was used to quantify the input uncertainty using the Minimum-Relative-Entropy approach. The quasi-Monte Carlo approach was applied to generate samples of parameters on the basis of the prior pdfs. Simulations corresponding to sampled parameter sets were used to generate response curves and response surfaces and statistical tests were used to rank the significance of the parameters for output responses including latent (LH) and sensible heat (SH) fluxes. Overall, the CLM4 simulated LH and SH show the largest sensitivity to subsurface runoff generation parameters. However, study sites with deep root vegetation are also affected by surface runoff parameters, while sites with shallow root zones are also sensitive to the vadose zone soil water parameters. Generally, sites with finer soil texture and shallower rooting systems tend to have larger sensitivity of outputs to the parameters. Our results suggest the necessity of and possible ways for parameter inversion/calibration using available measurements of latent/sensible heat fluxes to obtain the optimal parameter set for CLM4. This study also provided guidance on reduction of parameter set dimensionality and parameter calibration framework design for CLM4 and other land surface models under different hydrologic and climatic regimes.

Hou, Zhangshuan; Huang, Maoyi; Leung, Lai-Yung R.; Lin, Guang; Ricciuto, Daniel M.

2012-08-10T23:59:59.000Z

460

AN EMG-DRIVEN MUSCULOSKELETAL MODEL FOR THE ESTIMATION OF BIOMECHANICAL PARAMETERS  

E-Print Network [OSTI]

AN EMG-DRIVEN MUSCULOSKELETAL MODEL FOR THE ESTIMATION OF BIOMECHANICAL PARAMETERS OF WRIST FLEXORS function fmincon was used for the minimization ABSTRACT A musculoskeletal model of wrist flexors are in agreement with previously published data. WRIST MODEL · Hill-type musculotendon model (Zajac ,1989) · Muscle

Sóbester, András

Note: This page contains sample records for the topic "tox parameter tox" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Distributed Porosity as a Control Parameter for Oxide Thermal Barriers Made by Physical Vapor Deposition  

E-Print Network [OSTI]

Anthony G. Evans* Materials Institute, Princeton University, Princeton, New Jersey 08544 Thermal barrier and generating new thermal resistance solutions, as appropri- ate. A continuum heat flow analysis is usedDistributed Porosity as a Control Parameter for Oxide Thermal Barriers Made by Physical Vapor

Wadley, Haydn

462

Influence of combustion parameters on NOx production in an industrial boiler  

E-Print Network [OSTI]

Influence of combustion parameters on NOx production in an industrial boiler M.A. Habib a,*, M pollution using a model furnace of an industrial boiler utilizing fuel gas. The importance of this problem is mainly due to its relation to the pollutants produced by large boiler furnaces used widely in thermal

Aldajani, Mansour A.

463

Bayesian Parameter Estimation in Ising and Potts Models: A Comparative Study with Applications to  

E-Print Network [OSTI]

Bayesian Parameter Estimation in Ising and Potts Models: A Comparative Study with Applications December 6, 2009 Abstract Ising and Potts models are discrete Gibbs random field models originating in sta-8064; Fax: (919) 684-8594; Email: schmidler@stat.duke.edu 1 #12;1 Introduction Ising and Potts models

Schmidler, Scott

464

Measured wind turbine loads and their dependence on inflow parameters L. Manuel & L. D. Nelson  

E-Print Network [OSTI]

of the hub-height horizontal wind speed as well as secondary pa- rameters such as Reynolds stresses, vertical to other previous studies, but we do not bin the data sets by wind speed since dependen- cies in one wind turbine loads. Inflow parameters might include, for example, mean wind speed, turbu- lence intensity

Manuel, Lance

465

Spatial and time-dependent distribution of plasma parameters in the metal-halide arc lamp.  

E-Print Network [OSTI]

Spatial and time-dependent distribution of plasma parameters in the metal-halide arc lamp. A. Khakhaev, L. Luizova, K. Ekimov and A. Soloviev Petrozavodsk State University, Russia The metal-halide arc lamp is an effective light source and its investigation has a long history, but even at present some

Paris-Sud XI, Université de

466

A robust statistical estimation of the basic parameters of single stellar populations – I. Method  

Science Journals Connector (OSTI)

......technique which lifts this degeneracy...can infer the four main parameters...turn-off (TO) point and the base...identify that point which maximizes , the four coordinates which...Left-hand part: the four panels show...maximum likelihood point found by the......

X. Hernandez; David Valls-Gabaud

2008-02-01T23:59:59.000Z

467

A direct search method for determination of DAEM kinetic parameters from nonisothermal TGA data (note)  

Science Journals Connector (OSTI)

In this study, a simple direct search method to be used for the determination of distributed activation energy model (DAEM) kinetic parameters from the nonisothermal thermogravimetric analysis (TGA) data of coals has been introduced. Process steps of ... Keywords: curve fitting, direct search technique, distributed activation energy model (DAEM), thermogravimetric analysis data (TGA)

Mustafa Güne?; Semin Güne?

2002-08-01T23:59:59.000Z

468

Kinetic Parameters Estimation in the Polymerase Chain Reaction Process Using the Genetic Algorithm  

Science Journals Connector (OSTI)

The population is generated randomly and covers the entire range of possible solutions. ... steps were applied to predict the catalyst surface coverage and the bulk concn. ... RESULTS: Using the Genetic Algorithm to find the sub-optimal solution to the optimization problem, we have estimated a set of unknown parameters describing a kinetic model of a signaling pathway in the neuronal cell. ...

Lanting Li; Chao Wang; Bo Song; Lijuan Mi; Jun Hu

2012-09-13T23:59:59.000Z

469

The numerical calculation of single-diode solar-cell modelling parameters  

Science Journals Connector (OSTI)

Abstract The accurate simulation of a photovoltaic solar cell requires the precise determination of modelling parameters specific to the device under study. For the case of the single diode model, five parameters must be determined; Iph, I0, Rs, Rsh, and n. Generally speaking these values may be calculated either by analytical or numerical methods. Although analytical approaches are simple and fast to carry out, the assumptions and simplifications they introduce in order to deal with the non-linear characteristics of a solar cell may result in modelling inaccuracies. In this study a new approach is presented to calculate all five parameter values numerically minimising assumptions and simplifications. The method proposed is based on solving the single diode current–voltage equation expressed using the Lambert W-function at five experimentally obtained points along the current–voltage curve. To solve the system of non-linear equations, the multi-dimensional variant of the Newton–Raphson method is applied. All necessary first order partial differential equations are provided in closed form. Experimental validation of the proposed method revealed an improvement in modelling accuracy over one commonly used analytical approach. Furthermore, using TRNSYS software to simulate the annual energy output we show that modelling photovoltaic systems with small variations in solar cell parameters can result in non-trivial variations in annual energy output highlighting the importance of their calculation.

F. Ghani; G. Rosengarten; M. Duke; J.K. Carson

2014-01-01T23:59:59.000Z

470

Statistical Simulation to Estimate Uncertain Behavioral Parameters of Hybrid Energy-Economy Models  

E-Print Network [OSTI]

for their effect on output, energy demand, and, as a result, emissions. The model responses to these price changes are assumed to indicate likely market reactions to the extent that key parameters (price elasticities between functions. Policies that change energy prices, such as a tax on GHG emissions, can be simulated

471

MAC-Kaust Project P1 CO2 Sequestration Modeling of CO2 sequestration including parameter  

E-Print Network [OSTI]

MAC-Kaust Project P1 ­ CO2 Sequestration Modeling of CO2 sequestration including parameter identification and numerical simulation M. Brokate, O. A. PykhteevHysteresis aspects of CO2 sequestration modeling K-H. Hoffmann, N. D. Botkin Objectives and methods of CO2 sequestration There is a popular belief

Turova, Varvara

472

OPTIMAL PARAMETERS OF THE PHOTOCATHODE GUN SPACE CHARGE TO IMPROVE BEAM QUALITY  

E-Print Network [OSTI]

OPTIMAL PARAMETERS OF THE PHOTOCATHODE GUN SPACE CHARGE TO IMPROVE BEAM QUALITY M. Fedurin# , C National Laboratory (BNL ATF) operates with 5 MeV photocathode gun and 70 MeV linac for different range to the electron bunch in the gun with space charge affecting on the own bunch length and transverse profile

Brookhaven National Laboratory

473

Effects of systematic uncertainties on the supernova determination of cosmological parameters  

Science Journals Connector (OSTI)

......cosmological parameters Alex G. Kim 1 Eric V. Linder 1 Ramon Miquel 1 Nick Mostek 2 E-mail: rmiquel@lbl.gov 1 Lawrence Berkeley...at high redshifts. This point is of sufficient importance to merit a formal proof in the Appendix. 4.1 Monte Carlo analysis......

Alex G. Kim; Eric V. Linder; Ramon Miquel; Nick Mostek

2004-01-21T23:59:59.000Z

474

Parameter-free calculation of response functions in time dependent density functional theory  

E-Print Network [OSTI]

Parameter-free calculation of response functions in time dependent density functional theory - Quasiparticle approach - Density functional approach Mapping theory to describe spectra of solids in TDDFT Towards an efficient (fast) theory Conclusions #12;Dielectric function of the material Vtot = -1 Vext Non

Botti, Silvana

475

The Usage of Screen-Level Parameters and Microwave Brightness Temperature for Soil Moisture Analysis  

Science Journals Connector (OSTI)

This study focuses on testing two different soil moisture analysis systems based on screen-level parameters (2-m temperature T2m, 2-m relative humidity RH2m) and 1.4-GHz passive microwave brightness temperatures TB. First, a simplified extended ...

G. Seuffert; H. Wilker; P. Viterbo; M. Drusch; J-F. Mahfouf

2004-06-01T23:59:59.000Z

476

Variations in Schumann resonances and their relation to atmospheric electric parameters at Nagycenk station  

E-Print Network [OSTI]

Variations in Schumann resonances and their relation to atmospheric electric parameters at Nagycenk electric potential gradient (PG) and Schumann resonances at Nagycenk station (Hungary) from 1993 to 1996. Annual and semiannual variations detected previously in the relative amplitudes of Schumann resonances

Paris-Sud XI, Université de

477

Paper ID# 901691 BLIND SIGNAL PARAMETER ESTIMATION FOR THE RAPID RADIO FRAMEWORK  

E-Print Network [OSTI]

implementation methodology for rapid deployment. An automated tool for signal analysis requires several stagesPaper ID# 901691 1 of 7 BLIND SIGNAL PARAMETER ESTIMATION FOR THE RAPID RADIO FRAMEWORK Adolfo it is desirable or even essential to rapidly build a functional radio receiver to recover symbols from an unknown

478

MODAL PARAMETER ESTIMATION FOR OPERATIONAL WIND TURBINES Emilio Di Lorenzo1, 2  

E-Print Network [OSTI]

MODAL PARAMETER ESTIMATION FOR OPERATIONAL WIND TURBINES Emilio Di Lorenzo1, 2 , Simone Manzato1 Claudio 21, 80125 Naples, Italy emilio.dilorenzo@lmsintl.com ABSTRACT Wind turbines are time. This assumption holds in the case of parked wind turbines, but not in the case of operating wind turbines

Boyer, Edmond

479

Annual variation in primary moult parameters in Cape Weavers, Southern Masked Weavers and Southern Red  

E-Print Network [OSTI]

and Southern Red Bishops in the Western Cape, South Africa #12;160 #12;161 Annual variation in primary moult parameters in Cape Weavers, Southern Masked Weavers and Southern Red Bishops in the Western Cape, South Africa Abstract Duration of primary moult was similar in Cape Weavers and Southern Red Bishops (96 days

de Villiers, Marienne

480

onitoring environment parameters is a complex task of great importance in many  

E-Print Network [OSTI]

-line training of personnel and virtual proto- typing environment for no-penal- ty, what-if experiments VRE systems. A number of human-computer interface (HCI) modalities allows the human operators. There is a lim- ited number of RSAs, which have limited operational parameters, communicating via a limited

Petriu, Emil M.

Note: This page contains sample records for the topic "tox parameter tox" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

The optimization of repair decision using life-cycle cost Parameters  

Science Journals Connector (OSTI)

......of life cycle, operating time, inflation...of production, training, support equipment...development and technician training. These costs are...COST PARAMETERS 407 operating at various locations...of equipment and personnel, or alternatively...the independent selection of subsystem and......

LILIAN L. BARROS

1998-10-01T23:59:59.000Z

482

Linear Lattice Boltzmann Schemes for Acoustic: parameters choices and isotropy properties  

E-Print Network [OSTI]

Linear Lattice Boltzmann Schemes for Acoustic: parameters choices and isotropy properties Adeline lattice Boltzmann schemes according to the definition of the isotropic order given in [3]. This property} for D2Q13). We then propose numerical illustrations for the D2Q9 scheme. Introduction Lattice Boltzmann

Paris-Sud XI, Université de

483

DESIGN, MODELING, TESTING, AND SPICE PARAMETER EXTRACTION OF DIMOS TRANSISTOR IN 4H-SILICON CARBIDE  

E-Print Network [OSTI]

DESIGN, MODELING, TESTING, AND SPICE PARAMETER EXTRACTION OF DIMOS TRANSISTOR IN 4H-SILICON CARBIDE (DIMOS) transistor structure in 4H-Silicon Carbide (SiC) is presented. Simulation for transport Silicon carbide (SiC), a wide bandgap material, shows a tremendous potential for high temperature

Tolbert, Leon M.

484

Control-Oriented Linear Parameter-Varying Modelling of a Turbocharged Diesel Engine  

E-Print Network [OSTI]

Control-Oriented Linear Parameter-Varying Modelling of a Turbocharged Diesel Engine Merten Jung-- In this paper, a third order nonlinear model of the airpath of a turbocharged diesel engine is derived, which nonlinear airpath model of the diesel engine will be described in Section III. The model will be derived

Cambridge, University of

485

The dependence of winter aurora on interplanetary parameters J. B. Baker,1  

E-Print Network [OSTI]

. Papitashvili, and C. R. Clauer Space Physics Research Laboratory, University of Michigan, Ann Arbor, Michigan coefficients for the various eigenmodes are correlated separately with solar wind parameters and interplanetary with the solar wind density and IMF Bx and By. INDEX TERMS: 2704 Magnetospheric Physics: Auroral phenomena (2407

Michigan, University of

486

CorrectedProof DETERMINATION OF THE RHEOLOGICAL PARAMETERS OF SELF-COMPACTING  

E-Print Network [OSTI]

CorrectedProof DETERMINATION OF THE RHEOLOGICAL PARAMETERS OF SELF-COMPACTING CONCRETE MATRIX USING version: 7.7.2010 Abstract: The classification of a concrete mixture as self-compacting (SCC) is performed time with viscosity. Key words: self compacting concrete, rheology, slump flow, yield stress

Georgiou, Georgios

487

An electromagnetic and thermodynamic lumped parameter model of an explosively driven regenerative magnetohydrodynamic generator  

SciTech Connect (OSTI)

The objective of this research is to develop a simple, yet accurate, lumped parameter mathematical model for an explosively driven magnetohydrodynamic generator that can predict the pulse power variables of voltage and current from startup through regenerative operation. The inputs to the model will be the plasma properties entering the generator as predicted by the explosive shock model of Reference [1]. The strategy used was to simplify electromagnetic and thermodynamic three dimensional effects into a zero dimensional model. The model will provide a convenient tool for researchers to optimize designs to be used in pulse power applications. The model is validated using experimental data of Reference [1]. An overview of the operation of the explosively driven generator is first presented. Then a simplified electrical circuit model that describes basic performance of the device is developed. Then a lumped parameter model that incorporates the coupled electromagnetic and thermodynamic effects that govern generator performance is described and developed. The model is based on fundamental physical principles and parameters that were either obtained directly from design data or estimated from experimental data. The model was used to obtain parameter sensitivities and predict beyond the limits observed in the experiments to the levels desired by the potential Department of Defense sponsors. The model identifies process limitations that provide direction for future research.

Morrison, J.L.

1992-12-01T23:59:59.000Z

488

Bank-to-Turn Control for a Small UAV using Backstepping and Parameter  

E-Print Network [OSTI]

Bank-to-Turn Control for a Small UAV using Backstepping and Parameter Adaptation Dongwon Jung unmanned aerial vehicle (UAV). Assuming the UAV is equipped with an autopilot for low level control, we the applicability of the algorithm on a real system. 1. INTRODUCTION For decades unmanned aerial vehicles (UAVs

Tsiotras, Panagiotis

489

The effect of heart motion on parameter bias in dynamic cardiac SPECT  

SciTech Connect (OSTI)

Dynamic cardiac SPECT can be used to estimate kinetic rate parameters which describe the wash-in and wash-out of tracer activity between the blood and the myocardial tissue. These kinetic parameters can in turn be correlated to myocardial perfusion. There are, however, many physical aspects associated with dynamic SPECT which can introduce errors into the estimates. This paper describes a study which investigates the effect of heart motion on kinetic parameter estimates. Dynamic SPECT simulations are performed using a beating version of the MCAT phantom. The results demonstrate that cardiac motion has a significant effect on the blood, tissue, and background content of regions of interest. This in turn affects estimates of wash-in, while it has very little effect on estimates of wash-out. The effect of cardiac motion on parameter estimates appears not to be as great as effects introduced by photon noise and geometric collimator response. It is also shown that cardiac motion results in little extravascular contamination of the left ventricle blood region of interest.

Ross, S.G.; Gullberg, G.T. [Univ. of Utah, Salt Lake City, UT (United States); Huesman, R.H. [Lawrence Berkeley Lab., CA (United States); [Univ. of California, Berkeley, CA (United States)

1996-12-31T23:59:59.000Z

490

An automatic method to generate force-field parameters for hetero-compounds  

Science Journals Connector (OSTI)

A method has been developed that automatically constructs a crystallographic refinement force field (topology and parameter files) for any molecule from a theoretical frequency calculation. The approach has been tested on five proteins containing metal sites or non-standard inhibitors or coenzymes and it is shown that the structures are improved in various aspects.

Nilsson, K.

2003-01-24T23:59:59.000Z

491

Data-driven Techniques to Estimate Parameters in the Homogenized Energy Model for Shape Memory Alloys  

E-Print Network [OSTI]

, ferroelectric, and ferromagnetic materials. The energy origin of the model was originally investigated for SMA]. The original mod- els determined the equilibrium phase using the Gibbs energy to predict the mesoscopic (orData-driven Techniques to Estimate Parameters in the Homogenized Energy Model for Shape Memory

492

SIMULATIONS OF ALPHA PARAMETERS IN A TFTR DT SUPERSHOT WITH HIGH FUSION POWER  

E-Print Network [OSTI]

power production for approximately 0.5 s. Analysis of the highest non-disruptive discharge from May 1994 of the deuterium and tritium densities, the hydrogenic isotopic mass, the fusion reactions, the fast ion parameters isotopic scaling of the thermal plasma confinement with isotopic mass [8, 91. Several methods are being

Budny, Robert

493

Dispersion equation and eigenvalues for quantum wells using spectral parameter power series  

SciTech Connect (OSTI)

We derive a dispersion equation for determining eigenvalues of inhomogeneous quantum wells in terms of spectral parameter power series and apply it for the numerical treatment of eigenvalue problems. The method is algorithmically simple and can be easily implemented using available routines of such environments for scientific computing as MATLAB.

Castillo-Perez, Raul; Oviedo-Galdeano, Hector; Rabinovich, Vladimir S. [SEPI, ESIME, National Polytechnic Institute, Av. IPN S/N, C.P. 07738, Mexico City (Mexico); Kravchenko, Vladislav V. [Department of Mathematics, CINVESTAV del IPN, Campus Queretaro, Apartado Postal 1-798, Arteaga 5, Col. Centro, Santiago de Queretaro, Qro., 76001 (Mexico)

2011-04-15T23:59:59.000Z

494

Model-based Compressed Sensing reconstruction for MR parameter mapping Mariya Doneva1  

E-Print Network [OSTI]

Model-based Compressed Sensing reconstruction for MR parameter mapping Mariya Doneva1 , Christian Stehning2 , Peter Börnert2 , Holger Eggers2 and Alfred Mertins1 1 University of Luebeck, Luebeck, Germany, 2 Philips Research Europe, Hamburg, Germany Introduction: Compressed Sensing [1-4] suggests

Lübeck, Universität zu

495

Inverting Ultrasonic Data on Solid/Fluid Mixtures for BiotGassmann Parameters  

E-Print Network [OSTI]

Inverting Ultrasonic Data on Solid/Fluid Mixtures for Biot­Gassmann Parameters James G. Berryman Geophysics Department Stanford University Stanford, CA 94305­2215 #12; Inverting Ultrasonic Data on Solid, the values of the slopes are smaller than expected for some rocks. Therefore, the process of inverting

496

Design parameters for fuel batteries operating in a zero G field  

Science Journals Connector (OSTI)

Some design parameters of a hydrazine—oxygen fuel battery operating in a zero G field are described in a digital computer programming treatment. The power balance for a battery employing a gas-producing electrode and an electrolyte pump is treated; optimum power densities and flow rates are established.

A.P. Hardt; H.M. Cota; J.L. Fick; T. Katan

1963-01-01T23:59:59.000Z

497

Sample-based collection and adjustment algorithm for metadata extraction parameter of flexible format document  

Science Journals Connector (OSTI)

We propose an algorithm for automatically generating metadata extraction parameters. It first enumerates candidates on the basis of metadata occurrence in training documents, and then examines these candidates to avoid side effects and to maximize effectiveness. ... Keywords: keyword extraction, layout characteristics, logical structure analysis, metadata extraction

Toshiko Matsumoto; Mitsuharu Oba; Takashi Onoyama

2010-06-01T23:59:59.000Z

498

INFLUENCES OF RAKE RECEIVER/TURBO DECODER PARAMETERS ON ENERGY CONSUMPTION AND QUALITY  

E-Print Network [OSTI]

INFLUENCES OF RAKE RECEIVER/TURBO DECODER PARAMETERS ON ENERGY CONSUMPTION AND QUALITY Lodewijk T are selected and their influences on the energy consumption and quality are investigated by means power hardware is needed to save energy consumption. Furthermore, an adequate quality of the wireless

Al Hanbali, Ahmad

499

Structural Design and Parameter Research on the Biomass Direct-fired Stirling Engine  

Science Journals Connector (OSTI)

It makes a brief description of the forms and main parameters of the ? Stirling engine with the rhombic drive mechanism. The paper makes a deep analysis and found mathematical models on the cycle performance of ? Stirling engine, illustrates ... Keywords: Stirling engine, biomass, direct-fired, rhombic driving mechanism, performance simulation

Xu Zhang; Yan Ma

2010-08-01T23:59:59.000Z

500

An hybrid ensemble based approach for process parameter estimation in offshore oil platforms  

E-Print Network [OSTI]

An hybrid ensemble based approach for process parameter estimation in offshore oil platforms Piero in offshore oil platforms. In particular, the difference between the theoretical value of the valve flow on real measurements performed on a number of similar offshore choke valves. 1. Introduction In this paper

Paris-Sud XI, Université de