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1

AltE | Open Energy Information  

Open Energy Info (EERE)

AltE AltE Jump to: navigation, search Logo: AltE Name AltE Address 43 Broad Street Place Hudson, Massachusetts Zip 01749 Sector Solar Product Distributor of renewable energy parts and kits Number of employees 11-50 Website http://store.altestore.com/ Coordinates 42.38872°, -71.5638603° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.38872,"lon":-71.5638603,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

2

Alte LLC | Open Energy Information  

Open Energy Info (EERE)

Sector Vehicles Product Michigan-based manufacturer of powertrains for plug-in hybrid electric vehicles. References Alte LLC1 LinkedIn Connections CrunchBase Profile No...

3

AltAir Fuels | Open Energy Information  

Open Energy Info (EERE)

Sector Renewable Energy Product Seattle-based developer of projects for the production of jet fuel from renewable and sustainable oils. References AltAir Fuels1 LinkedIn...

4

alt fuel | OpenEI  

Open Energy Info (EERE)

9 9 Varnish cache server Browse Upload data GDR 429 Throttled (bot load) Error 429 Throttled (bot load) Throttled (bot load) Guru Meditation: XID: 2142288369 Varnish cache server alt fuel Dataset Summary Description Alternative fueling stations are located throughout the United States and their availability continues to grow. The Alternative Fuels Data Center (AFDC) maintains a website where you can find alternative fuels stations near you or on a route, obtain counts of alternative fuels stations by state, Source Alternative Fuels Data Center Date Released December 13th, 2010 (4 years ago) Date Updated December 13th, 2010 (4 years ago) Keywords alt fuel alternative fuels alternative fuels stations biodiesel CNG compressed natural gas E85 Electricity ethanol hydrogen liquefied natural gas LNG

5

AltPower Inc | Open Energy Information  

Open Energy Info (EERE)

icon AltPower Inc Jump to: navigation, search Name altPower Inc Place New York, New York Zip 70420 Sector Renewable Energy, Solar Product A specialist installer of all fields...

6

ALT-3 target design and simulations  

SciTech Connect

ALT-3 is an experiment being designed in collaboration between Russian VNIIEF scientists and LANL that aims to conduct high velocity material experiments to measure shock velocities and pressures near 1 TPa. The DEMG (Disck Explosive Magnetic Generator) is used to drive> 60MA currents to accelerate an aluminum liner to speeds in excess of 20 km/s. 1-D and 2-D simulations of the aluminum target are presented with information on the free surface velocity profile, the state of the target, and the shock velocity in the target. 2-D simulations are presented showing the different targets available as well as a scenario with a perturbed liner impacter.

Peterson, Jeffrey H [Los Alamos National Laboratory

2011-01-12T23:59:59.000Z

7

NREL Alt Fuel Lessons Learned: Hydrogen Infrastructure  

NLE Websites -- All DOE Office Websites (Extended Search)

Britta K. Gross Britta K. Gross Manager, Hydrogen and Electrical Infrastructure General Motors Corporation NREL Alt Fuel Lessons Learned -- Hydrogen Infrastructure -- Sacramento, CA April 3, 2008 * Very limited access to today's stations - Stations not made available or... - No-go access contracts/liability clauses or ... - Assurance of access by customers/drivers * "OEM x vehicles/drivers have priority over OEM y" * e.g. "Can't fuel on Tuesday and Thursday afternoons 4-7pm" * Very limited availability of 700bar fueling - Every major OEM is developing 700bar capability (GM vehicles since 2004) - With only two exceptions, 700bar is the baseline * Current stations are largely behind-the-fence, demo-like, and lagging in technology availability (note: vehicle technology refreshed every 3-4 years)

8

Alternative Liquid Fuels Simulation Model (AltSim).  

DOE Green Energy (OSTI)

The Alternative Liquid Fuels Simulation Model (AltSim) is a high-level dynamic simulation model which calculates and compares the production and end use costs, greenhouse gas emissions, and energy balances of several alternative liquid transportation fuels. These fuels include: corn ethanol, cellulosic ethanol from various feedstocks (switchgrass, corn stover, forest residue, and farmed trees), biodiesel, and diesels derived from natural gas (gas to liquid, or GTL), coal (coal to liquid, or CTL), and coal with biomass (CBTL). AltSim allows for comprehensive sensitivity analyses on capital costs, operation and maintenance costs, renewable and fossil fuel feedstock costs, feedstock conversion ratio, financial assumptions, tax credits, CO{sub 2} taxes, and plant capacity factor. This paper summarizes the structure and methodology of AltSim, presents results, and provides a detailed sensitivity analysis. The Energy Independence and Security Act (EISA) of 2007 sets a goal for the increased use of biofuels in the U.S., ultimately reaching 36 billion gallons by 2022. AltSim's base case assumes EPA projected feedstock costs in 2022 (EPA, 2009). For the base case assumptions, AltSim estimates per gallon production costs for the five ethanol feedstocks (corn, switchgrass, corn stover, forest residue, and farmed trees) of $1.86, $2.32, $2.45, $1.52, and $1.91, respectively. The projected production cost of biodiesel is $1.81/gallon. The estimates for CTL without biomass range from $1.36 to $2.22. With biomass, the estimated costs increase, ranging from $2.19 per gallon for the CTL option with 8% biomass to $2.79 per gallon for the CTL option with 30% biomass and carbon capture and sequestration. AltSim compares the greenhouse gas emissions (GHG) associated with both the production and consumption of the various fuels. EISA allows fuels emitting 20% less greenhouse gases (GHG) than conventional gasoline and diesels to qualify as renewable fuels. This allows several of the CBTL options to be included under the EISA mandate. The estimated GHG emissions associated with the production of gasoline and diesel are 19.80 and 18.40 kg of CO{sub 2} equivalent per MMBtu (kgCO{sub 2}e/MMBtu), respectively (NETL, 2008). The estimated emissions are significantly higher for several alternatives: ethanol from corn (70.6), GTL (51.9), and CTL without biomass or sequestration (123-161). Projected emissions for several other alternatives are lower; integrating biomass and sequestration in the CTL processes can even result in negative net emissions. For example, CTL with 30% biomass and 91.5% sequestration has estimated production emissions of -38 kgCO{sub 2}e/MMBtu. AltSim also estimates the projected well-to-wheel, or lifecycle, emissions from consuming each of the various fuels. Vehicles fueled with conventional diesel or gasoline and driven 12,500 miles per year emit 5.72-5.93 tons of CO{sub 2} equivalents per year (tCO{sub 2}e/yr). Those emissions are significantly higher for vehicles fueled with 100% ethanol from corn (8.03 tCO{sub 2}e/yr) or diesel from CTL without sequestration (10.86 to 12.85 tCO{sub 2}/yr). Emissions could be significantly lower for vehicles fueled with diesel from CBTL with various shares of biomass. For example, for CTL with 30% biomass and carbon sequestration, emissions would be 2.21 tCO{sub 2}e per year, or just 39% of the emissions for a vehicle fueled with conventional diesel. While the results presented above provide very specific estimates for each option, AltSim's true potential is as a tool for educating policy makers and for exploring 'what if?' type questions. For example, AltSim allows one to consider the affect of various levels of carbon taxes on the production cost estimates, as well as increased costs to the end user on an annual basis. Other sections of AltSim allow the user to understand the implications of various polices in terms of costs to the government or land use requirements. AltSim's structure allows the end user to explore each of these alternatives and understand the sensitivities implications a

Williams, Ryan; Baker, Arnold Barry; Drennen, Thomas E.

2009-12-01T23:59:59.000Z

9

Alternative Liquid Fuels Simulation Model (AltSim).  

Science Conference Proceedings (OSTI)

The Alternative Liquid Fuels Simulation Model (AltSim) is a high-level dynamic simulation model which calculates and compares the production costs, carbon dioxide emissions, and energy balances of several alternative liquid transportation fuels. These fuels include: corn ethanol, cellulosic ethanol, biodiesel, and diesels derived from natural gas (gas to liquid, or GTL) and coal (coal to liquid, or CTL). AltSim allows for comprehensive sensitivity analyses on capital costs, operation and maintenance costs, renewable and fossil fuel feedstock costs, feedstock conversion efficiency, financial assumptions, tax credits, CO{sub 2} taxes, and plant capacity factor. This paper summarizes the preliminary results from the model. For the base cases, CTL and cellulosic ethanol are the least cost fuel options, at $1.60 and $1.71 per gallon, respectively. Base case assumptions do not include tax or other credits. This compares to a $2.35/gallon production cost of gasoline at September, 2007 crude oil prices ($80.57/barrel). On an energy content basis, the CTL is the low cost alternative, at $12.90/MMBtu, compared to $22.47/MMBtu for cellulosic ethanol. In terms of carbon dioxide emissions, a typical vehicle fueled with cellulosic ethanol will release 0.48 tons CO{sub 2} per year, compared to 13.23 tons per year for coal to liquid.

Baker, Arnold Barry; Williams, Ryan (Hobart and William Smith Colleges, Geneva, NY); Drennen, Thomas E.; Klotz, Richard (Hobart and William Smith Colleges, Geneva, NY)

2007-10-01T23:59:59.000Z

10

Elektros energijos konversijos ? ilumin? alt?ja vandenilio plazma tyrimai.  

E-Print Network (OSTI)

??Magistro darb? Elektros energijos konversija ? ilumin? alt?ja vandenilio plazma tyrimai sudaro ?vadas, 2 skyriai, ivados, literat?ros s?raas, 1 kompaktinis diskas. Darbo apimtis 43 (more)

Kupryt?,; Diana

2012-01-01T23:59:59.000Z

11

Diorganosilacetylene-alt-diorganosilvinylene polymers and a process of preparation  

DOE Patents (OSTI)

The present invention provides linear organosilicon polymers including acetylene and vinylene moieties, and a process for their preparation. These diorganosilacetylene-alt-diorganosilvinylene linear polymers can be represented by the formula: --[--(R.sup.1)(R.sup.2)Si--C.tbd.C--(R.sup.3)(R.sup.4)Si--CH.dbd.CH--].sub .n --, wherein n.gtoreq.2; and each R.sup.1, R.sup.2, R.sup.3, and R.sup.4 is independently selected from the group consisting of hydrogen, halogen, alkyl, alkenyl, aryl, and aralkyl radicals. The polymers are soluble in organic solvents, air stable, and can be pulled into fibers or cast into films. They can be thermally converted into silicon carbide ceramic materials.

Barton, Thomas J. (Ames, IA); Ijadi-Maghsoodi, Sina (Ames, IA); Pang, Yi (Ames, IA)

1995-10-10T23:59:59.000Z

12

Quantifying the Impacts of Time-based Rates, Enabling Technology...  

NLE Websites -- All DOE Office Websites (Extended Search)

the Impacts of Time-based Rates, Enabling Technology, and Other Treatments in Consumer Behavior Studies: Protocols and Guidelines Title Quantifying the Impacts of Time-based Rates,...

13

amagazineforalumniandfriendsoftheinstituteoftechnology|SPring/Summer2007 AltErnAtivEs  

E-Print Network (OSTI)

ways to produce lower-cost solar heating systems manufactured of plastic rather than of cop- per. They are developing improved storage systems and methods to reduce scaling on the polymer surfaces of solar unitsIng tomorrow on the Cover Professor Eray Aydil tests a nanowire-based solar cell in his lab. Aydil is just one

Minnesota, University of

14

Tips: Time-Based Electricity Rates | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Tips: Time-Based Electricity Rates Tips: Time-Based Electricity Rates Tips: Time-Based Electricity Rates July 2, 2012 - 8:09pm Addthis Time-based electricity programs encourage you to use energy when the demand is low by giving you a lower price for electricity during those times. Time-based electricity programs encourage you to use energy when the demand is low by giving you a lower price for electricity during those times. What are the key facts? Time-based electricity programs encourage you to use energy when the demand is low by giving you a lower price for electricity during those times. Distributing the electricity demand more evenly ensures that a steady and reliable stream of electricity is available for everyone. To help reduce their peak power demands and save money, many utilities are

15

Tips: Time-Based Electricity Rates | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Tips: Time-Based Electricity Rates Tips: Time-Based Electricity Rates Tips: Time-Based Electricity Rates July 2, 2012 - 8:09pm Addthis Time-based electricity programs encourage you to use energy when the demand is low by giving you a lower price for electricity during those times. Time-based electricity programs encourage you to use energy when the demand is low by giving you a lower price for electricity during those times. What are the key facts? Time-based electricity programs encourage you to use energy when the demand is low by giving you a lower price for electricity during those times. Distributing the electricity demand more evenly ensures that a steady and reliable stream of electricity is available for everyone. To help reduce their peak power demands and save money, many utilities are

16

Tips: Time-Based Electricity Rates | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

July 2, 2012 - 8:09pm Addthis Time-based electricity programs encourage you to use energy when the demand is low by giving you a lower price for electricity during those times....

17

Optimization of time-based rates in forward energy markets  

E-Print Network (OSTI)

This paper presents a new two-step design approach of Time-Based Rate (TBR) programs for markets with a high penetration of variable energy sources such as wind power. First, an optimal market time horizon must be determined ...

Wang, J.

18

Property:EIA/861/AltFuelVehicle | Open Energy Information  

Open Energy Info (EERE)

AltFuelVehicle AltFuelVehicle Jump to: navigation, search This is a property of type Boolean. Description: Alt Fuel Vehicle Entity operated alternative-fueled vehicles during the year (Y or N) [1] References ↑ EIA Form EIA-861 Final Data File for 2008 - F861 File Layout-2008.doc Pages using the property "EIA/861/AltFuelVehicle" Showing 25 pages using this property. (previous 25) (next 25) A AEP Generating Company + true + AEP Texas Central Company + true + AEP Texas North Company + true + Access Energy Coop + true + Adams Electric Cooperative Inc + true + Agralite Electric Coop + true + Alabama Power Co + true + Ameren Illinois Company + true + Appalachian Power Co + true + Arizona Public Service Co + true + Atchison-Holt Electric Coop + true + Atlantic City Electric Co + true +

19

Property:EIA/861/AltFuelVehicle2 | Open Energy Information  

Open Energy Info (EERE)

AltFuelVehicle2 AltFuelVehicle2 Jump to: navigation, search This is a property of type Boolean. Description: Alt Fuel Vehicle2 Entity plans to operate alternative-fueled vehicles next year (Y or N) [1] References ↑ EIA Form EIA-861 Final Data File for 2008 - F861 File Layout-2008.doc Pages using the property "EIA/861/AltFuelVehicle2" Showing 25 pages using this property. (previous 25) (next 25) A AEP Generating Company + true + AEP Texas Central Company + true + AEP Texas North Company + true + Access Energy Coop + true + Adams Electric Cooperative Inc + true + Agralite Electric Coop + true + Alabama Power Co + true + Ameren Illinois Company + true + Appalachian Power Co + true + Arizona Public Service Co + true + Atchison-Holt Electric Coop + true + Atlantic City Electric Co + true +

20

Residential Customer Enrollment in Time-based Rate and Enabling...  

NLE Websites -- All DOE Office Websites (Extended Search)

Customer Enrollment in Time-based Rate and Enabling Technology Programs: Smart Grid Investment Grant Consumer Behavior Study Analysis Title Residential Customer Enrollment in...

Note: This page contains sample records for the topic "alt base time" 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

On Time-Invariant Purified-Output-Based Discrete Time Control  

E-Print Network (OSTI)

Oct 14, 2005 ... On Time-Invariant Purified-Output-Based Discrete Time Control. Aharon Ben-Tal (abental ***at*** ie.technion.ac.il) Stephen Boyd (boyd ***at***...

22

Feature-based clustering for electricity use time series data  

Science Conference Proceedings (OSTI)

Time series clustering has been shown effective in providing useful information in various applications. This paper presents an efficient computational method for time series clustering and its application focusing creation of more accurate electricity ... Keywords: electricity distribution, electricity use data, feature extraction, feature-based clustering, load curves, time series clustering

Teemu Rsnen; Mikko Kolehmainen

2009-04-01T23:59:59.000Z

23

Definition: Time-Based Rate Program | Open Energy Information  

Open Energy Info (EERE)

Based Rate Program Based Rate Program Jump to: navigation, search Dictionary.png Time-Based Rate Program Electricity rates paid by customers in which rates vary for different days, times of the day, or events (such as days with extremely high loads). Various types of customer systems facilitate implementation of these time-variant pricing programs. These systems include smart meters, controls, and communications systems and software that provide two-way information between utilities and customers. Such systems may control customer load, based on the time-variant pricing program, or provide information for customers to alter their electricity consumption pattern in response to different rates during any given hour of the day. There are different pricing programs such as: Time Of Use (TOU) where the day is

24

An overview of time-based and condition-based maintenance in industrial application  

Science Conference Proceedings (OSTI)

This paper presents an overview of two maintenance techniques widely discussed in the literature: time-based maintenance (TBM) and condition-based maintenance (CBM). The paper discusses how the TBM and CBM techniques work toward maintenance decision ... Keywords: Condition-based maintenance, Industrial application, Maintenance decision making, Maintenance techniques, Preventive maintenance, Time-based maintenance

Rosmaini Ahmad; Shahrul Kamaruddin

2012-08-01T23:59:59.000Z

25

Adaptive time-frequency analysis based on autoregressive modeling  

Science Conference Proceedings (OSTI)

A new adaptive method for discrete time-frequency analysis based on autoregressive (AR) modeling is introduced. The performance of AR modeling often depends upon a good selection of the model order. The predictive least squares (PLS) principle of Rissanen ... Keywords: Adaptive filters, Autoregressive modeling, Least squares methods, Model order, Time-frequency analysis

Antonio H. Costa; Stephan Hengstler

2011-04-01T23:59:59.000Z

26

Run-time validation of knowledge-based systems  

Science Conference Proceedings (OSTI)

As knowledge bases become more complex it is increasingly unlikely that they will have been validated against all possible data and therefore an increasing risk of making errors. Run-time validation is checking whether the output of a knowledge base ... Keywords: anomalies, outliers, prudence, ripple-down rules, validation

Angela Finlayson, Paul Compton

2013-06-01T23:59:59.000Z

27

Distribution Based Data Filtering for Financial Time Series Forecasting  

E-Print Network (OSTI)

of stock prices, which aims to forecast the future values of the price of a stock, in order to obtain/selling strategies to gain competitive advantage. Classic and popular methods for stock price forecasting [3Distribution Based Data Filtering for Financial Time Series Forecasting Goce Ristanoski1 , James

Bailey, James

28

Diorganosilacetylene-alt-diorganosilvinylene polymers and a process densifying porous silicon-carbide bodies  

DOE Patents (OSTI)

The present invention provides linear organosilicon polymers including acetylene and vinylene moieties, and a process for their preparation. These diorganosilacetylene-alt-diorganosilvinylene linear polymers can be represented by the formula: --[--(R.sup.1)(R.sup.2)Si--C.tbd.C--(R.sup.3)(R.sup.4)Si--CH=CH--].sub.n-- , wherein n.gtoreq.2; and each R.sup.1, R.sup.2, R.sup.3, and R.sup.4 is independently selected from the group consisting of hydrogen, halogen, alkyl, alkenyl, aryl, and aralkyl radicals. The polymers are soluble in organic solvents, air stable, and can be pulled into fibers or cast into films. They can be thermally converted into silicon carbide ceramic materials.

Barton, Thomas J. (Ames, IA); Ijadi-Maghsoodi, Sina (Ames, IA); Pang, Yi (Ames, IA)

1994-05-17T23:59:59.000Z

29

Highly charged ion based time of flight emission microscope  

DOE Patents (OSTI)

A highly charged ion based time-of-flight emission microscope has been designed, which improves the surface sensitivity of static SIMS measurements because of the higher ionization probability of highly charged ions. Slow, highly charged ions are produced in an electron beam ion trap and are directed to the sample surface. The sputtered secondary ions and electrons pass through a specially designed objective lens to a microchannel plate detector. This new instrument permits high surface sensitivity (10.sup.10 atoms/cm.sup.2), high spatial resolution (100 nm), and chemical structural information due to the high molecular ion yields. The high secondary ion yield permits coincidence counting, which can be used to enhance determination of chemical and topological structure and to correlate specific molecular species.

Barnes, Alan V. (Livermore, CA); Schenkel, Thomas (San Francisco, CA); Hamza, Alex V. (Livermore, CA); Schneider, Dieter H. (Livermore, CA); Doyle, Barney (Albuquerque, NM)

2001-01-01T23:59:59.000Z

30

Double spin asymmetry AL?T? in charged pion production from deep inelastic scattering on a transversely polarized He target  

E-Print Network (OSTI)

In this thesis I discuss the first measurement of the beam-target double-spin asymmetry ALT for charged pion electroproduction in deep inelastic electron scattering on a transversely polarized 3He target. These data were ...

Huang, Jin, Ph. D. Massachusetts Institute of Technology

2012-01-01T23:59:59.000Z

31

Structure of Poly(styrene-b-ethylene-alt-propylene) Diblock Copolymer Micelles in Squalane  

SciTech Connect

The temperature dependence of the micellar structures formed by poly(styrene-b-ethylene-alt-propylene) (SEP) diblock copolymers in squalane, a highly selective solvent for the PEP blocks, has been studied using dynamic light scattering (DLS) and small-angle X-ray scattering (SAXS). Four SEP diblock copolymers were prepared by sequential anionic polymerization of styrene and isoprene, followed by hydrogenation of the isoprene blocks, to yield SEP(17-73), SEP(26-66), SEP(36-69), and SEP(42-60), where the numbers indicate block molecular weights in kDa. All four polymers formed well-defined spherical micelles. In dilute solution, DLS provided the temperature-dependent mean hydrodynamic radius, R{sub h}, and its distribution, while detailed fitting of the SAXS profiles gave the core radius, R{sub c}, the equivalent hard sphere radius, R{sub hs}, and an estimate of the aggregation number, N{sub agg}. In general, the micelles became smaller as the critical micelle temperature (CMT) was approached, which was well above the glass transition of the core block. As concentration increased the micelles packed onto body centered cubic lattices for all four copolymers, which underwent order-disorder transitions upon heating near the dilute solution CMTs. The results are discussed in terms of current understanding of block copolymer solution self-assembly, and particular attention is paid to the issue of equilibration, given the high glass transition temperature of the core block.

Choi, Soo-Hyung; Bates, Frank S.; Lodge, Timothy P.; (UMM)

2009-11-04T23:59:59.000Z

32

Real-Time Precipitation Estimation Based on Index Station Percentiles  

Science Conference Proceedings (OSTI)

Operational hydrologic models are typically calibrated using meteorological inputs derived from retrospective station data that are commonly not available in real time. Inconsistencies between the calibration and (generally sparser) real-time ...

Qiuhong Tang; Andrew W. Wood; Dennis P. Lettenmaier

2009-02-01T23:59:59.000Z

33

Time-based intrusion detection in cyber-physical systems  

Science Conference Proceedings (OSTI)

Embedded systems, particularly real-time systems with temporal constraints, are increasingly deployed in every day life. Such systems that interact with the physical world are also referred to as cyber-physical systems (CPS). These systems commonly find ... Keywords: cyber-physical systems, real-time systems, security, timing analysis

Christopher Zimmer; Balasubramanya Bhat; Frank Mueller; Sibin Mohan

2010-04-01T23:59:59.000Z

34

Bispectral-based methods for clustering time series  

Science Conference Proceedings (OSTI)

Distinguishing among linear and nonlinear time series or between nonlinear time series generated by different underlying processes is challenging, as second-order properties are generally insufficient for the task. Different nonlinear processes have ... Keywords: Bispectral density function, Hierarchical clustering, Nonlinear time series

Jane L. Harvill, Nalini Ravishanker, Bonnie K. Ray

2013-08-01T23:59:59.000Z

35

SumTime-Turbine: A Knowledge-Based System to Communicate Gas Turbine Time-Series Data  

E-Print Network (OSTI)

SumTime-Turbine: A Knowledge-Based System to Communicate Gas Turbine Time-Series Data Jin Yu produces textual summaries of archived time- series data from gas turbines. These summaries should help evaluated. 1 Introduction In order to get the most out of gas turbines, TIGER [2] has been developed

Reiter, Ehud

36

A new time-invariant fuzzy time series forecasting method based on genetic algorithm  

Science Conference Proceedings (OSTI)

In recent years, many fuzzy time series methods have been proposed in the literature. Some of these methods use the classical fuzzy set theory, which needs complex matricial operations in fuzzy time series methods. Because of this problem, many studies ...

Erol E?rio?lu

2012-01-01T23:59:59.000Z

37

Assessing Accelerator-Based HPC Reverse Time Migration  

Science Conference Proceedings (OSTI)

Oil and gas companies trust Reverse Time Migration (RTM), the most advanced seismic imaging technique, with crucial decisions on drilling investments. The economic value of the oil reserves that require RTM to be localized is in the order of 10^{13} ... Keywords: Reverse time migration, accelerators, GPU, Cell/B.E., FPGA, geophysics.

Mauricio Araya-Polo; Javier Cabezas; Mauricio Hanzich; Miquel Pericas; Felix Rubio; Isaac Gelado; Muhammad Shafiq; Enric Morancho; Nacho Navarro; Eduard Ayguade; Jose Maria Cela; Mateo Valero

2011-01-01T23:59:59.000Z

38

Fragment-based Time-dependent Density-functional Theory  

E-Print Network (OSTI)

Using the Runge-Gross theorem that establishes the foundation of Time-dependent Density Functional Theory (TDDFT) we prove that for a given electronic Hamiltonian, choice of initial state, and choice of fragmentation, there is a unique single-particle potential (dubbed time-dependent partition potential) which, when added to each of the pre-selected fragment potentials, forces the fragment densities to evolve in such a way that their sum equals the exact molecular density at all times. This uniqueness theorem suggests new ways of computing time-dependent properties of electronic systems via fragment-TDDFT calculations. We derive a formally exact relationship between the partition potential and the total density, and illustrate our approach on a simple model system for binary fragmentation in a laser field.

Mosquera, Martin A; Wasserman, Adam

2013-01-01T23:59:59.000Z

39

Real-time concepts for block-based watermarking schemes  

Science Conference Proceedings (OSTI)

In this paper we propose a concept to transfer a non real-time watermarking system into a watermarking system, which meets the requirements of a media-on-demand system. Several applications scenarios requiring the embedding of watermarks with maximum ...

Michael Arnold; Oliver Lobisch

2002-12-01T23:59:59.000Z

40

Multiple wavelength time-of-flight sensor based on time-correlated single-photon counting  

E-Print Network (OSTI)

The optical system was based around a commercially available Meade LX200 catadioptric Schmidt a collection fiber and camera in the image plane of the telescope; and c optical routing: an optical routing- get and focused it onto an optical fiber core. This fiber was positioned in the image plane

Buller, Gerald S.

Note: This page contains sample records for the topic "alt base time" 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

Detecting Relay Attacks with Timing-Based Protocols  

E-Print Network (OSTI)

Abstract. Distance bounding protocols have been proposed as means of detecting relay attacks, also known as mafia fraud. In this paper we present the first symmetric key based distance bounding protocol that is also resistant to so-called terrorist fraud, a variant of mafia fraud. Relay attacks present a serious threat to RF security devices (contactless smart cards, RFID tags and the like) because they undermine the implicit assumption that the device is physically close to the reader when it is operating. In applications such as physical access control this assumption of physical proximity is all-important. Distance bounding protocols require a communication channel that can exchange single bits with extremely low latency. This unconventional communication requirement has prompted Hancke and Kuhn to assert in a recent publication [12] that ultra wide band (UWB) radio is necessary to achieve a useful distance bounding resolution. We analyse this assertion and present a alternative, novel communication approach that leverages the phenomena of side channel leakage to deliver a low latency channel. Our proposal is capable of detecting sophisticated relay attacks without resorting to the considerable expense and complexity of UWB radio. We present experimental results to support our arguments. 1

Jason Reid; Juan M. Gonzlez Nieto; Tee Tang; Bouchra Senadji

2007-01-01T23:59:59.000Z

42

A Field-Deployable Real-Time Laser-Based Non-Intrusive Detection System for Measurement of True Travel Time on the Highway  

E-Print Network (OSTI)

A Real- Time Laser-Based Detection System for Measurement ofTime Laser- Based Prototype Detection System for MeasurementLaser-Based Non-Intrusive Detection System for Measurement

Cheng, Harry H.; Shaw, Ben; Palen, Joe; Wang, Zhaoqing; Chen, Bo

2002-01-01T23:59:59.000Z

43

A metric time-point and duration-based temporal model  

Science Conference Proceedings (OSTI)

Constraint-based formalisms are a useful and common way to deal with temporal reasoning tasks. Assertions represent temporal constraints between temporal objects, time-points or intervals: Metric temporal constraints between time points permit us to ...

Federico A. Barber

1993-07-01T23:59:59.000Z

44

New Web-based System Leads to Better, More Timely Data  

Science Conference Proceedings (OSTI)

New Web-based System Leads to Better, More Timely Data. For Immediate Release: October 26, 2006. ... Web Release Date: October 11, 2006. ...

2012-11-01T23:59:59.000Z

45

Model-based estimation of time-varying parameters and state variables in aerobic bioprocesses  

Science Conference Proceedings (OSTI)

Keywords: adaptive observer, aerobic bioprocess, biomass concentration, biomass growth rate, model-based estimation, observer stability, oxygen comsumption, time-varying parameters, yield coefficient

V. Lubenova

2000-08-01T23:59:59.000Z

46

Real-Time Bias Reduction for Satellite-Based Precipitation Estimates  

Science Conference Proceedings (OSTI)

A new approach to reduce biases in satellite-based estimates in real time is proposed and tested in this study. Currently satellite-based precipitation estimates exhibit considerable biases, and there have been many efforts to reduce these biases ...

Yudong Tian; Christa D. Peters-Lidard; John B. Eylander

2010-12-01T23:59:59.000Z

47

Vector Time Management Based on Topology Information for HLA/RTI  

Science Conference Proceedings (OSTI)

Aimed to reduce the overheads using the Time Management (TM) in HLA based distributed simulations, the TM based on publish-subscribe topology information is investigated. The condition under which the message may be received before its causal predecessor ... Keywords: Time management, Vector clock, Causal order, Topology information, Algorithms

Chunpeng Chen; Hongjin Jia

2012-07-01T23:59:59.000Z

48

Liner velocity, current, and symmetry measurements on the 32 MEGAMP flux compression generator experiment ALT-1  

SciTech Connect

A flux compression generator pulse power system, designed, built, and fielded by a Russian team at the All Russian Scientific Research Institute of Experimental Physics (VNIIEF), was used to successfully drive an aluminum liner to velocities greater than 12 km/sec. The experiment objective was to demonstrate performance of a precision liner implosion at an Atlas current of 30 MA or greater. Diagnostics to measure liner performance were an essential part of the experiment. An experimental team from Los Alamos National Laboratory (LANL) provided a suite of diagnostics to measure liner performance. Three diagnostics were fielded: (1) A velocity interferometer (VISAR) to continuously measure the liner innersurface velocity throughout the entire range of travel, (2) Two Faraday rotation devices to measure liner current during the implosion, and, (3) Sixteen fiber optic impact pins to record liner impact time and provide axial and azimuthal symmetry information. All diagnostics performed very well. Major results are maximum current: 32.3 MA, velocity at impact: greater than 12 km/sec, symmetry: the impact pins indicated that the liner was smooth, solid, and axially symmetric upon arrival at the diagnostic package. The LANL team fabricated, installed, and recorded the three diagnostics presented here. All necessary equipment was brought to the site in Russia. The VNIIEF team fielded other diagnostics to measure machine performance. Results of machine diagnostics are reported in other presentations.

Anderson, B. G. (Brodie G.); Rodriguez, G. (George); Stokes, J. L. (John L.); Tabaka, L. J. (Leonard J.); Clark, D. A. (David A.)

2001-01-01T23:59:59.000Z

49

System Demonstration: Interactive GIS-based interface for time-critical application  

Science Conference Proceedings (OSTI)

Many time-critical applications, such as emergency evacuation, demand decision-makers to make prompt decisions under time pressure. Therefore, it is essential to design an intuitive and interactive user interface to present critical information to users ... Keywords: GIS-based, UI, time-critical

Wenjuan Fan; Anhong Ling; Xiang Li; Gang Liu; Jian Zhan; Lian Li; Yongzhong Sha

2009-05-01T23:59:59.000Z

50

A novel time-based low-power pipeline analog to digital converter  

Science Conference Proceedings (OSTI)

A new power reduction technique for analog-to-digital converters is proposed in this paper. A novel current-mode algorithm which uses time to perform analog-to-digital conversion has been described and a 12 bit 100-ksample/s time-based pipeline analog ... Keywords: Bottom plate sampling, Continues-time comparator, Digital correction, Pipeline ADC

Mohammad Hossein Zarifi; Javad Frounchi; Shahin Farshchi; Jack W. Judy

2010-03-01T23:59:59.000Z

51

A-<;  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

< < Enclosure 2 ..- Page 1 of 2 RECORDS DlSPOSrrlON AUTHORITY (k IrrEtnx;tmr wl ma^) DATE RECEIVED 1. FROM (AgbncyoreaWWmmt NOTIFICATION TO AGENCY DepamncntofErmyy . 1 4.. NA?$E OF PERSON WITH WHOM TO CONFER 5. TELEPHONE I 6 . A G t N C Y CtK l ItlCATION I ~ E a r t i f y t M I m ~ b 3 ~ f D T ~ . o 1 c 1 c y m ~ p b c . t r i n b . g t o t h e ~ o f ~ r s c o r e b u d t f r t t t h a r s c o r d r ~ f o r ~ m t h s d b e h d p r g s ( s ) w s n o t m n r c b d f o r t h a k a i n s r r o f t h b . g c n c y ~ w i l l n o t b s m d s d r r R t r t h s ~ p c w i o d r r p e c i f i e d ; P d m ~ a n c u r r s n o e f r a t h e ~ ~ D f f i a , w h p r w k a n s o f R t h 8 o f t h t GAO ktuunl for Guidance d Fsddnl Apsndro, Core Contract Records See attached description 115.109 NSN STANDARD FORM 115 (REV. 3.91) PREVIOUS EDITION NOT USABLE P-bul by NARA 36 CFR 1228 Enclosure 2 Page 2 of 2 (1) Unit - PNR Contracts and Security ~ivision (2) Description - Contracts for procurement of reactor cores,

52

The Time Cost of Tornado Warnings and the Savings with Storm-Based Warnings  

Science Conference Proceedings (OSTI)

The authors examine the cost of time spent under tornado warnings issued annually by the National Weather Service (NWS). County-based tornado warnings imposed substantial costs on the nation: an average of 234 million person-hours spent under ...

Daniel Sutter; Somer Erickson

2010-04-01T23:59:59.000Z

53

Enhanced modeling : real-time simulation and modeling of graph based problems on interactive workbenches  

E-Print Network (OSTI)

This thesis presents a methodology and framework for designing systems that apply real-time simulation of computational models throughout the modeling and parameter modification stages of problem solving for graph based ...

Chak, Daniel, 1980-

2004-01-01T23:59:59.000Z

54

Integer programming-based real-time scheduler in semiconductor manufacturing  

Science Conference Proceedings (OSTI)

This paper demonstrates how an integer programming-based real-time scheduling heuristic approach can be applied for semiconductor manufacturing. Two integer programming formulations of a simplified version of this problem are proposed to model (1) a ...

Myoungsoo Ham; Young Hoon Lee; John W. Fowler

2009-12-01T23:59:59.000Z

55

A test for second order stationarity of a time series based on the Discrete Fourier Transform  

E-Print Network (OSTI)

A test for second order stationarity of a time series based on the Discrete Fourier Transform property, we construct a Portmanteau type test statistic for testing stationarity of the time series. It is shown that under the null of stationarity, the test statistic is approximately a chi square distribution

Subba Rao, Suhasini

56

Dead-Time Compensation for PMSM Drive Based on Neuro-Fuzzy Observer  

Science Conference Proceedings (OSTI)

To compensate voltage difference between the reference and the actual output voltages caused by dead-time effects, a novel compensation method for permanent magnet synchronous motor (PMSM) drive based on neuro-fuzzy observer is proposed. This method ... Keywords: dead-time, PMSM, ANN, FC

Xianqing Cao; Liping Fan

2008-10-01T23:59:59.000Z

57

ATOM: An object-based formal method for real-time systems  

Science Conference Proceedings (OSTI)

An object based formal method for the development of real‐time systems, called ATOM, is presented. The method is an integration of the real‐time formal technique TAM (Temporal Agent Model) with an industry‐strength structured ...

Hussein Zedan; Antonio Cau; Zhiqiang Chen; Hongji Yang

1999-06-01T23:59:59.000Z

58

A STEP-compliant computer numerical control based on real-time Ethernet for circuit boardmilling  

Science Conference Proceedings (OSTI)

With the globalisation of manufacturing industry, extendable and networked computer numerical control systems that can support bidirectional and seamless data exchange are in urgent need. This paper presents a STEP-NC compliant controller based on Real-time ... Keywords: Gerber, Real-time Ethernet RTE, STEP-NC, circuit board milling, computer numerical control CNC

Ke Wang; Riliang Liu; Xun Xu; Chenrui Zhang; Lin Yang

2012-12-01T23:59:59.000Z

59

A prediction method for time series based on wavelet neural networks  

Science Conference Proceedings (OSTI)

This paper introduces a prediction method for time series that is based on the multi-resolution analysis of wavelets (MRA). The MRA is better able to decompose the non-stationary time series of nonlinear systems into different components, allowing a ...

Xiaobing Gan; Ying Liu; Francis R. Austin

2005-12-01T23:59:59.000Z

60

Timed automata-based rehabilitation training game design for the affected lower extremity of hemiparetic patient  

Science Conference Proceedings (OSTI)

This paper presents a timed automata based rehabilitation training game design to effectively strengthen the affected leg of the hemiparetic patient. The proposed system is implemented by applying a simple motion capture technique to a rhythm game. Especially, ... Keywords: hemiparetic patient, isometric training, motion capture, rehabilitation training game, timed automata

Gi Sook Jung; Sang Yun Kim; Soon Ki Jung; Seung Deuk Byun; Yang Soo Lee

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "alt base time" 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

Real Time Physically-Based Modeling and Simulation of Cratering and Fragmentation of Terrain  

Science Conference Proceedings (OSTI)

Cratering and fragmentation of terrain due to eXplosions are the behaviors of interest in this effort. We propose a physically-based approach to model the eXplosion event and the process of terrain fragmentation resulting in the formation of craters. ... Keywords: dynamic terrain, eXplosion simulation, physics-based modeling, real time system, simulation, terrain database

Nabil Rami; Michael D. Proctor

2007-12-01T23:59:59.000Z

62

A new method of waveform digitization based on time-interleaved A/D conversion  

E-Print Network (OSTI)

Time interleaved analog-to-digital conversion (TIADC) based on parallelism is an effective way to meet the requirement of the ultra-fast waveform digitizer beyond Gsps. Different methods to correct the mismatch errors among different analog-to-digital conversion channels have been developed previously. To overcome the speed limitation in hardware design and to implement the mismatch correction algorithm in real time, this paper proposes a fully parallel correction algorithm. A 12-bit 1-Gsps waveform digitizer with ENOB around 10.5 bit from 5 MHz to 200 MHz is implemented based on the real-time correction algorithm.

Chunfeng Ye; Lei Zhao; Changqing Feng; Shubin Liu; Qi An

2013-07-05T23:59:59.000Z

63

A Real-Time Simulator for Doubly Fed Induction Generator based Wind Turbine Applications  

E-Print Network (OSTI)

Abstract- This paper describes a real-time simulator of wind turbine generator system suitable for controller design and tests. The simulated generator is a grid-connected doubly fed induction machine with back-to-back PWM voltage source vector control of the rotor. The simulator is based on RT-LAB real-time simulation platform that allows for easy model-to-real-time-target design from Simulink models. The paper puts special emphasis on the fixed-step simulation problematic of kHz-range PWM inverter drives and the techniques used in the real-time simulator to accurately simulate those drives.

Christian Dufour; Jean Blanger

2004-01-01T23:59:59.000Z

64

Development and Testing of Field-Deployable Real-Time Laser-Based Non-Intrusive Detection System for Measurement of True Travel Time on the Highway  

E-Print Network (OSTI)

Laser-Based Non-Intrusive Detection System for MeasurementLaser-Based Non-Intrusive Detection System for Measurementsystems are entirely dependent on time-of-?ight laser measurements

2001-01-01T23:59:59.000Z

65

Analysis of Customer Enrollment Patterns in TIme-Based Rate Programs:  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Analysis of Customer Enrollment Patterns in TIme-Based Rate Analysis of Customer Enrollment Patterns in TIme-Based Rate Programs: Initial Results from the SGIG Consumer Behavior Studies (July 2013) Analysis of Customer Enrollment Patterns in TIme-Based Rate Programs: Initial Results from the SGIG Consumer Behavior Studies (July 2013) The U.S. Department of Energy is implementing the Smart Grid Investment Grant (SGIG) program under the American Recovery and Reinvestment Act of 2009 (Recovery Act). The SGIG program involves 99 projects that are deploying smart grid technologies, tools, and techniques for electric transmission, distribution, advanced metering, and customer systems. A subset of the 99 SGIG projects is conducting consumer behavior studies. These studies examine the response of residential and small commercial

66

A framework for simulation-based real-time whole building performance  

NLE Websites -- All DOE Office Websites (Extended Search)

A framework for simulation-based real-time whole building performance A framework for simulation-based real-time whole building performance assessment Title A framework for simulation-based real-time whole building performance assessment Publication Type Journal Article Refereed Designation Unknown LBNL Report Number 0360-1323 Year of Publication 2012 Authors Pang, Xiufeng, Michael Wetter, Prajesh Bhattacharya, and Philip Haves Journal Building and Environment Volume 54 Start Page 100 Pagination 100-108 Date Published 08/2012 ISSN 0360-1323 Keywords building controls virtual test bed, building performance, energy modeling, energyplus, real-time building simulation Abstract Most commercial buildings do not perform as well in practice as intended by the design and their performances often deteriorate over time. Reasons include faulty construction, malfunctioning equipment, incorrectly configured control systems and inappropriate operating procedures. One approach to addressing this problems is to compare the predictions of an energy simulation model of the building to the measured performance and analyze significant differences to infer the presence and location of faults. This paper presents a framework that allows a comparison of building actual performance and expected performance in real time. The realization of the framework utilized the EnergyPlus, the Building Controls Virtual Test Bed (BCVTB) and the Energy Management and Control System (EMCS) was developed. An EnergyPlus model that represents expected performance of a building runs in real time and reports the predicted building performance at each time step. The BCVTB is used as the software platform to acquire relevant inputs from the EMCS through a BACnet interface and send them to the EnergyPlus and to a database for archiving. A proof-of-concept demonstration is also presented.

67

A Real-Time, Hierarchical, Sensor-Based Robotic System Architecture  

Science Conference Proceedings (OSTI)

A robotic system architecture is presented and its real-time performance, when used to control a robotic gripper system for deformation-free handling of limp material, is evaluated. A major problem to be overcome has been the integrability and compatibility ... Keywords: compatibility, hierarchical control, sensor-based control, system architecture, system integration

Timothy Hebert; Kimon Valavanis; Ramesh Kolluru

1998-01-01T23:59:59.000Z

68

A new battery energy storage system control method based on SOC and variable filter time constant  

Science Conference Proceedings (OSTI)

Because of large fluctuations and strong randomness of active power generated by renewable energy resources, taking into account the constraints such as battery life cycle, a new battery energy storage system control method based on real-time state-of-charge ...

Li Guo; Ye Zhang; Cheng Shan Wang

2012-01-01T23:59:59.000Z

69

An automated pipeline for asteroseismology based on the autocorrelation of stellar time series  

E-Print Network (OSTI)

The autocorrelation of an asteroseismic time series has been identified as a powerful tool capable of providing measurements of the large frequency separations. The performance of this method has been assessed and quantified by Mosser & Appourchaux (2009). We propose now an automated pipeline based on it and describe its performance.

Mosser, Benoit

2010-01-01T23:59:59.000Z

70

Implicit--explicit methods based on strong stability preserving multistep time discretizations  

Science Conference Proceedings (OSTI)

In this note we propose and analyze novel implicit-explicit methods based on second order strong stability preserving multistep time discretizations. Several schemes are developed, and a linear stability analysis is performed to study their properties ... Keywords: Advection--diffusion equation, Implicit--explicit methods, Stability, Strong stability preserving methods

Thor Gjesdal

2007-08-01T23:59:59.000Z

71

TACO-DTN: a time-aware content-based dissemination system for delay tolerant networks  

Science Conference Proceedings (OSTI)

Content dissemination applications are becoming more and more popular on fixed infrastructure: in this paper we introduce TACO-DTN, a content dissemination system which, by virtue of being time-aware in terms of subscriptions and events, is appropriate ... Keywords: buffer management, content-based routing, delay tolerant networking, event dissemination, infostations, publish/subscribe systems

Giuseppe Sollazzo; Mirco Musolesi; Cecilia Mascolo

2007-06-01T23:59:59.000Z

72

A Method to Infer Observation Time Based on Day-to-Day Temperature Variations  

Science Conference Proceedings (OSTI)

A method to infer the observation time of a station at annual resolution is developed and tested at stations in the United States. The procedure is based on a tendency for the percentiles of the monthly distribution of positive day-to-day maximum ...

Arthur T. DeGaetano

1999-12-01T23:59:59.000Z

73

Real-time motion effect enhancement based on fluid dynamics in figure animation  

Science Conference Proceedings (OSTI)

In fast figure animation, motion blur is often employed to generate fantastic effects of figure motion, for exaggerating the atmosphere one wants to convey. In the previous works for long time, the solution based on certain kind of image blending in ... Keywords: GPU geometric processing, fluid dynamics, motion blur, skeletal animation

Tian-Chen Xu; En-Hua Wu; Mo Chen; Ming Xie

2011-12-01T23:59:59.000Z

74

Shedding light on shadow: real-time interactive artworks based on cast shadows or silhouettes  

Science Conference Proceedings (OSTI)

Digital shadowing is a source of interest in immersive and interactive artworks because it enhances the feeling of presence, and because it is a very intuitive and engaging interaction "device." After a presentation of some major pieces in shadow-based ... Keywords: augmented reality, digital art, digital shadow, interactive art, real-time image processing, video-scenography

Christian Jacquemin; Georges Gagner; Benot Lahoz

2011-11-01T23:59:59.000Z

75

Conversion of non-calendar to calendar-time based preventive  

E-Print Network (OSTI)

scheduling optimization process. Design/methodology/approach ­ The algorithm utilizes estimations of work-in-process going to equipment costs. On the other hand, due to the complexity of scheduling PM tasks, heuristic (WIP) and system parameters to estimate an equivalent calendar-time schedule for PM schedules based

Fernandez, Emmanuel

76

VLSI-DSP based real time solution of DSC-SRI for an ultrasound system  

Science Conference Proceedings (OSTI)

In this paper, VLSI-DSP based a real time solution for Digital Scan Conversion (DSC) and speckle reduced imaging (SRI) of an ultrasonography (USG) are proposed. DSC is needed to convert the polar format data to Cartesian coordinate to make them compatible ... Keywords: DaVinci, Digital Scan Conversion, FPGA, Speckle reduction imaging, Ultrasound sonography

Kishor Prabhakar Sarawadekar; Harihar Bharat Indana; Deep Bera; Swapna Banerjee

2012-02-01T23:59:59.000Z

77

Using time-driven activity-based costing to manage digital forensic readiness in large organisations  

Science Conference Proceedings (OSTI)

A digital forensic readiness (DFR) programme consists of a number of activities that should be chosen and managed with respect to cost constraints and risk. Traditional cost systems, however, can not provide the cost of individual activities. This makes ... Keywords: Cost management, Digital forensic readiness, Forensics management, Time-driven activity-based costing

K. Reddy; H. S. Venter; M. S. Olivier

2012-12-01T23:59:59.000Z

78

Optimal Real-time Pricing Algorithm Based on Utility Maximization for Smart Grid  

E-Print Network (OSTI)

Optimal Real-time Pricing Algorithm Based on Utility Maximization for Smart Grid Pedram Samadi algorithm for the future smart grid. We focus on the interactions between the smart meters and the energy-mail:{psamadi, hamed, rschober, vincentw, jurij}@ece.ubc.ca Abstract--In this paper, we consider a smart power infras

Wong, Vincent

79

Time-windows-based filtering method for near-surface detection of leakage from geologic carbon sequestration sites  

E-Print Network (OSTI)

Time-Windows-Based Filtering Method for Near-Surfacethat combines a novel time-window splitting scheme, a simpleconsists of a novel time-window splitting scheme, a simple

Pan, L.

2010-01-01T23:59:59.000Z

80

Real Time Runoff Forecasts for Two Hydroelectric Stations Based on Satellite Snow Cover Monitoring  

E-Print Network (OSTI)

Seasonal and short-term runoff forecasts for two hydroelectric stations in the upper Rhine basin are carried out in real time based on snow cover monitoring by Landsat and SPOT satellites. Evaluation of snow reserves on 1 April 1993 from satellite data reveals uncertainties in estimates using point measurements on the ground as index. Runoff is computed by the SRM model with snow covered areas as well as temperature and precipitation forecasts as input variables. A SRM menu system has been installed for operational data acquisition and management. The runoff forecasts can be exploited, among other purposes, for optimizing the hydropower production and for timely decisions on the electricity market.

Klaus Seidel; Walter Brsch; Charlotte Steinmeier; Jaroslav Martinec; Jrg Wiedemeier; Klaus Seidel Walter Br Usch; J Urg Wiedemeier

1995-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "alt base time" 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

Prototype Phasor-Based Real-Time Monitoring Software Tool - Training Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

Prototype Phasor-Based Real-Time Monitoring Prototype Phasor-Based Real-Time Monitoring Software Tool - Training Presentation Prepared For: California Energy Commission Public Interest Energy Research Program Prepared By: Lawrence Berkeley National Laboratory Consortium for Electric Reliability Technology Solutions APPENDIX E October 2008 CEC-500-2008-049-APE Prepared By: Lawrence Berkeley National Laboratory Joe Eto, Manu Parashar, Bernard Lesieutre, and Nancy Jo Lewis Berkeley, CA Administered by University of California, California Institute for Energy and Environment under 500-99-013, BOA-138. Jim Cole, Larry Miller Oakland, California 94612 Commission Contract No. 500-02-004 Commission Work Authorization No: MR-036 Prepared For: Public Interest Energy Research (PIER)

82

Evolution of Microstructure in a Nickel-based Superalloy as a Function of Ageing Time  

SciTech Connect

An experimental investigation, combining synchrotron X-ray powder diffraction, small-angle neutron-scattering, and transmission electron microscopy, has been undertaken to study the microstructure of nanoprecipitates in a nickel-based superalloy. Upon increasing the ageing time during a heat-treatment process, the average size of the precipitates first decreases before changing to a monotonical growth stage. Possible reasons for this observed structural evolution, which is predicted thermodynamically, are suggested.

Chen, Wei-Ren [ORNL; Smith, Gregory Scott [ORNL; Porcar, L. [National Institute of Standards and Technology (NIST); Liaw, Peter K [University of Tennessee, Knoxville (UTK); Kai, Ji-Jung [ORNL; Ren, Yang [Argonne National Laboratory (ANL)

2011-01-01T23:59:59.000Z

83

Use of WindSat to Extend a Microwave-Based Daily Optimum Interpolation Sea Surface Temperature Time Series  

Science Conference Proceedings (OSTI)

The NOAA daily optimum interpolation sea surface temperature analysis (DOISST) is available either as a 31-yr (from 1981 onward) time series based on Advanced Very High Resolution Radiometer (AVHRR) observations or as a 9-yr (200211) time ...

Viva F. Banzon; Richard W. Reynolds

2013-04-01T23:59:59.000Z

84

Taming Wild Horses: The Need for Virtual Time-based Scheduling of VMs in Network Simulations  

SciTech Connect

The next generation of scalable network simulators employ virtual machines (VMs) to act as high-fidelity models of traffic producer/consumer nodes in simulated networks. However, network simulations could be inaccurate if VMs are not scheduled according to virtual time, especially when many VMs are hosted per simulator core in a multi-core simulator environment. Since VMs are by default free-running, on the outset, it is not clear if, and to what extent, their untamed execution affects the results in simulated scenarios. Here, we provide the first quantitative basis for establishing the need for generalized virtual time scheduling of VMs in network simulators, based on an actual prototyped implementations. To exercise breadth, our system is tested with multiple disparate applications: (a) a set of message passing parallel programs, (b) a computer worm propagation phenomenon, and (c) a mobile ad-hoc wireless network simulation. We define and use error metrics and benchmarks in scaled tests to empirically report the poor match of traditional, fairness-based VM scheduling to VM-based network simulation, and also clearly show the better performance of our simulation-specific scheduler, with up to 64 VMs hosted on a 12-core simulator node.

Yoginath, Srikanth B [ORNL; Perumalla, Kalyan S [ORNL; Henz, Brian J [ORNL

2012-01-01T23:59:59.000Z

85

Bayesian based design of real-time sensor systems for high-risk indoor contaminants  

Science Conference Proceedings (OSTI)

The sudden release of toxic contaminants that reach indoor spaces can be hazardousto building occupants. To respond effectively, the contaminant release must be quicklydetected and characterized to determine unobserved parameters, such as release locationand strength. Characterizing the release requires solving an inverse problem. Designinga robust real-time sensor system that solves the inverse problem is challenging becausethe fate and transport of contaminants is complex, sensor information is limited andimperfect, and real-time estimation is computationally constrained.This dissertation uses a system-level approach, based on a Bayes Monte Carloframework, to develop sensor-system design concepts and methods. I describe threeinvestigations that explore complex relationships among sensors, network architecture,interpretation algorithms, and system performance. The investigations use data obtainedfrom tracer gas experiments conducted in a real building. The influence of individual sensor characteristics on the sensor-system performance for binary-type contaminant sensors is analyzed. Performance tradeoffs among sensor accuracy, threshold level and response time are identified; these attributes could not be inferred without a system-level analysis. For example, more accurate but slower sensors are found to outperform less accurate but faster sensors. Secondly, I investigate how the sensor-system performance can be understood in terms of contaminant transport processes and the model representation that is used to solve the inverse problem. The determination of release location and mass are shown to be related to and constrained by transport and mixing time scales. These time scales explain performance differences among different sensor networks. For example, the effect of longer sensor response times is comparably less for releases with longer mixing time scales. The third investigation explores how information fusion from heterogeneous sensors may improve the sensor-system performance and offset the need for more contaminant sensors. Physics- and algorithm-based frameworks are presented for selecting and fusing information from noncontaminant sensors. The frameworks are demonstrated with door-position sensors, which are found to be more useful in natural airflow conditions, but which cannot compensate for poor placement of contaminant sensors. The concepts and empirical findings have the potential to help in the design of sensor systems for more complex building systems. The research has broader relevance to additional environmental monitoring problems, fault detection and diagnostics, and system design.

Sreedharan, Priya; Sreedharan, Priya

2007-12-01T23:59:59.000Z

86

Vision-based Real-time Monitoring on the Behavior of Fish School  

E-Print Network (OSTI)

This paper introduces a technique which can automatically monitor the behavior of fish school in images in real-time. Results on the activity level, distribution and social interaction within the school are generated based on the spatial information extracted from captured images. The fish behaviors we observe here are selected based on a list of responses which fish exhibit when they are in distress. As it is a very challenging task to perform manual observations on fish, this technique creates a convenient alternative for researchers who need to study the behavior of fish. Instead, monitoring can be done effortlessly as images are translated to statistical results which can be used to describe the behavior of fish in the school. On top of this, the results can also detect any change to the water quality. 1.

Boon Fong Chew; How-lung Eng; Myo Thida

2009-01-01T23:59:59.000Z

87

Real-time Shape-based Particle Separation and Detailed In-situ Particle Shape Characterization  

SciTech Connect

Particle shape is an important attribute that is very difficult to characterize. We present a new portable system that offers, for the first time, the opportunity to separate particles with different shapes and characterize their chemical and physical properties, including their dynamic shape factors (DSFs) in the transition and free-molecular regimes, with high precision, in-situ, and in real-time. The system uses a new generation aerosol particle mass analyzer (APM) to classify particles based on their masses and transport them to a differential mobility analyzer (DMA) that is used to select particles of one charge, one mass, and one shape. These highly uniform particles are ready for use and/or characterization by any application or analytical tool. We combine APM and DMA with our single particle mass spectrometer, SPLAT II, to form the ADS, and demonstrate its utility to measure in real-time individual particle compositions and vacuum aerodynamic diameters to yield, for each selected shape, particle DSFs in two flow regimes. We apply the ADS to characterize aspherical ammonium sulfate and NaCl particles and show that both particle types have wide distribution of particle shapes with DSFs from nearly 1 to 1.5.

Beranek, Josef; Imre, D.; Zelenyuk, Alla

2012-02-07T23:59:59.000Z

88

TACO-DTN: A Time-Aware COntent-based dissemination system for Delay Tolerant Networks  

E-Print Network (OSTI)

Content dissemination applications are becoming more and more popular on fixed infrastructure: in this paper we introduce TACO-DTN, a content dissemination system which, by virtue of being time-aware in terms of subscriptions and events, is appropriate for delay tolerant networks, where a number of nodes act as infostations, enjoying some form of connectivity to the backbone, and other nodes are mobile devices, reachable sometimes only through intermittent connectivity of carriers. Examples of applications benefiting from such a system could be travel information dissemination systems in large cities (exploiting infostations at bus stops) or on highways, advertisements dissemination at specific times, and information dissemination to remote villages. The approach is based on a novel concept of temporal utility of subscriptions and events. The temporal utility is used to govern the routing of the events to the right infostation (i.e., the one reached by the interested subscribers at the right time), avoiding unnecessary information transfer on slow links and the buffer management, in case buffer limitations are an issue. We give a description of our protocol and discuss its validation through simulation.

Mirco Musolesi

2007-01-01T23:59:59.000Z

89

Enhanced Prediction Techniques Based on Time-Accurate Simulations for Turbine Blade Internal Cooling  

NLE Websites -- All DOE Office Websites (Extended Search)

Performance Computational Fluid-Thermal Science & Engineering Lab Performance Computational Fluid-Thermal Science & Engineering Lab utsr.dkt.oct05 Enhanced Prediction Techniques Based on Time-Accurate Simulations for Turbine Blade Internal Cooling Danesh Tafti SCIES Project 02- 01- SR100 DOE COOPERATIVE AGREEMENT DE-FC26-02NT41431 Tom J. George, Program Manager, DOE/NETL Richard Wenglarz, Manager of Research, SCIES Project Awarded (5/1/02, 36 Month Duration) $ 331,430 Total Contract Value ($331,430 DOE) High Performance Computational Fluid-Thermal Science & Engineering Lab utsr.dkt.oct05 Gas Turbine Need * Need for higher thermal efficiencies result in higher gas temperatures * Cooling technologies critical for increased durability * Reliable prediction tools for design - reduce costs High Performance Computational Fluid-Thermal Science & Engineering Lab

90

Neural-net based real-time economic dispatch for thermal power plants  

Science Conference Proceedings (OSTI)

This paper proposes the application of artificial neural networks to real-time optimal generation dispatch of thermal units. The approach can take into account the operational requirements and network losses. The proposed economic dispatch uses an artificial neural network (ANN) for generation of penalty factors, depending on the input generator powers and identified system load change. Then, a few additional iterations are performed within an iterative computation procedure for the solution of coordination equations, by using reference-bus penalty-factors derived from the Newton-Raphson load flow. A coordination technique for environmental and economic dispatch of pure thermal systems, based on the neural-net theory for simplified solution algorithms and improved man-machine interface is introduced. Numerical results on two test examples show that the proposed algorithm can efficiently and accurately develop optimal and feasible generator output trajectories, by applying neural-net forecasts of system load patterns.

Djukanovic, M.; Milosevic, B. [Inst. Nikola Tesla, Belgrade (Yugoslavia). Dept. of Power Systems; Calovic, M. [Univ. of Belgrade (Yugoslavia). Dept. of Electrical Engineering; Sobajic, D.J. [Electric Power Research Inst., Palo Alto, CA (United States)

1996-12-01T23:59:59.000Z

91

Test Time Reduction Reusing Multiple Processors in a Network-on-Chip Based Architecture  

E-Print Network (OSTI)

The increasing complexity and the short life cycles of embedded systems are pushing the current system-on-chip designs towards a rapid increasing on the number of programmable processing units, while decreasing the gate count for custom logic. Considering this trend, this work proposes a test planning method capable of reusing available processors as test sources and sinks, and the on-chip network as the test access mechanism. Experimental results are based on ITC'02 benchmarks and on two open core processors compliant with MIPS and SPARC instruction set. The results show that the cooperative use of both the on-chip network and the embedded processors can increase the test parallelism and reduce the test time without additional cost in area and pins.

Amory, Alexandre M; Moraes, Fernando G; Moreno, Edson I

2011-01-01T23:59:59.000Z

92

Sparsity-Based Space-Time Adaptive Processing Using OFDM Radar  

Science Conference Proceedings (OSTI)

We propose a sparsity-based space-time adaptive processing (STAP) algorithm to detect a slowly-moving target using an orthogonal frequency division multiplexing (OFDM) radar. We observe that the target and interference spectra are inherently sparse in the spatio-temporal domain, and hence we exploit that sparsity to develop an efficient STAP technique. In addition, the use of an OFDM signal increases the frequency diversity of our system, as different scattering centers of a target resonate at different frequencies, and thus improves the target detectability. First, we formulate a realistic sparse-measurement model for an OFDM radar considering both the clutter and jammer as the interfering sources. Then, we show that the optimal STAP-filter weight-vector is equal to the generalized eigenvector corresponding to the minimum generalized eigenvalue of the interference and target covariance matrices. To estimate the target and interference covariance matrices, we apply a residual sparse-recovery technique that enables us to incorporate the partially known support of the sparse vector. Our numerical results demonstrate that the sparsity-based STAP algorithm, with considerably lesser number of secondary data, produces an equivalent performance as the other existing STAP techniques.

Sen, Satyabrata [ORNL

2012-01-01T23:59:59.000Z

93

A New Series of Rate Decline Relations Based on the Diagnosis of Rate-Time Data  

E-Print Network (OSTI)

The so-called "Arps" rate decline relations are by far the most widely used tool for assessing oil and gas reserves from rate performance. These relations (i.e., the exponential and hyperbolic decline relations) are empirical where the starting point for their derivation is given by the definitions of the "loss ratio" and the "derivative of the loss ratio", where the "loss ratio" is the ratio of rate data to derivative of rate data, and the "derivative of the loss ratio" is the "b-parameter" as defined by Arps [1945]. The primary goal of this work is the interpretation of the b-parameter continuously over time and thus the better understanding of its character. As is shown below we propose "monotonically decreasing functional forms" for the characterization of the b-parameter, in addition to the exponential and hyperbolic rate decline relations, where the b-parameter is assumed to be zero and constant, respectively. The proposed equations are as follow: b(t)=constant (Arps' hyperbolic rate-decline relation), []tbbtb10exp)(-bt= (exponential function), (power-law function), 10)(btbtb=)/(1)(10tbbtb+= (rational function). The corresponding rate decline relation for each case is obtained by solving the differential equation associated with the selected functional for the b-parameter. The next step of this procedure is to test and validate each of the rate decline relations by applying them to various numerical simulation cases (for gas), as well as for field data cases obtained from tight/shale gas reservoirs. Our results indicate that b-parameter is never constant but it changes continuously with time. The ultimate objective of this work is to establish each model as a potential analysis/diagnostic relation. Most of the proposed models yield more realistic estimations of gas reserves in comparison to the traditional Arps' rate decline relations (i.e., the hyperbolic decline) where the reserves estimates are inconsistent and over-estimated. As an example, the rational b-parameter model seems to be the most accurate model in terms of representing the character of rate data; and therefore, should yield more realistic reserves estimates. Illustrative examples are provided for better understanding of each b-parameter rate decline model. The proposed family of rate decline relations was based on the character of the b-parameter computed from the rate-time data and they can be applied to a wide range of data sets, as dictated by the character of rate data.

Boulis, Anastasios

2009-08-01T23:59:59.000Z

94

Phenomenology for Supernova Ia Data Based on a New Cosmic Time  

E-Print Network (OSTI)

A new phenomenological theory for the expansion of our universe is presented. Because fundamental supporting theory is still in development, its discussion is not presented in this paper. The theory is based on a new algebraic expression for cosmic time G Rho t^2=3/32Pi, which correctly predicts the WMAP measured cosmological constants and the fundamental Hubble parameter H(t) for the expansion of the universe. A replacement for dark matter, called here "dark mass", is proposed which scales as with the expansion and incorporated. It does not react with ordinary matter, except gravitationally, and produces flat rotational curves for spiral galaxies. Also a new expression for the approaching velocity of radiation in a closed 3-sphere expanding universe is given that accounts for the early degrading negative approach of radiation for z > 1.7. The expression is v = Hr-c. Combining these three elements produces a luminosity distance dL that successfully predicts the apparent magnitude of exploding supernova Ia stars and even the new gamma ray bursts with no need for dark energy or acceleration of the expansion of the universe.

Charles B. Leffert

2007-07-26T23:59:59.000Z

95

A test for second order stationarity of a time series based on the Discrete Fourier Transform -Technical report  

E-Print Network (OSTI)

A test for second order stationarity of a time series based on the Discrete Fourier Transform stationary. Exploiting this important property, we construct a Portmanteau type test statistic for testing stationarity of the time series. It is shown that under the null of stationarity, the test statistic has

Subba Rao, Suhasini

96

Real-time estimation of olive oil quality parameters: a combined approach based on ANNs and machine vision  

Science Conference Proceedings (OSTI)

The present work describes a combined approach based on Artificial Neural Networks and Machine Vision for the real-time estimation of some qualitative olive oil parameters. The proposed methodology proves to be a useful tool for the real-time estimation ... Keywords: ANNs, acidity, machine vision, olive oil, peroxides, ripeness, sanitation condition

Monica Carfagni; Marco Daou; Rocco Furferi

2008-07-01T23:59:59.000Z

97

The design and implementation of real-time environment monitoring systems based on wireless sensor networks  

Science Conference Proceedings (OSTI)

This research focuses on the implementation of a real-time environment monitoring system for environment detection using wireless sensor networks. The purpose of our research is to construct the system on the real-time environment with the technology ...

Kyung-Hoon Jung; Seok-Cheol Lee; Hyun-Suk Hwang; Chang-Soo Kim

2006-05-01T23:59:59.000Z

98

Modular and deformable touch-sensitive surfaces based on time domain reflectometry  

Science Conference Proceedings (OSTI)

Time domain reflectometry, a technique originally used in diagnosing cable faults, can also locate where a cable is being touched. In this paper, we explore how to extend time domain reflectometry in order to touch-enable thin, modular, and deformable ... Keywords: TDR, capacitive sensing, deformable, input, time domain reflectometry, touch sensing, wearable

Raphael Wimmer; Patrick Baudisch

2011-10-01T23:59:59.000Z

99

Assessing the Value of Regulation Resources Based on Their Time Response Characteristics  

DOE Green Energy (OSTI)

Fast responsive regulation resources are potentially more valuable as a power system regulation resource (more efficient) because they allow applying controls at the exact moment and in the exact amount as needed. Faster control is desirable because it facilitates more reliable compliance with the NERC Control Performance Standards at relatively lesser regulation capacity procurements. The current California ISO practices and markets do not provide a differentiation among the regulation resources based on their speed of response (with the exception of some minimum ramping capabilities). Some demand response technologies, including some generation and energy storage resources, can provide quicker control actions. California ISO practices and markets could be updated to welcome more fast regulation resources into the California ISO service area. The project work reported in this work was pursuing the following objectives: Develop methodology to assess the relative value of generation resources used for regulation and load following California ISO functions This assessment should be done based on physical characteristics including the ability to quickly change their output following California ISO signals Evaluate what power is worth on different time scales Analyze the benefits of new regulation resources to provide effective compliance with the mandatory NERC Control Performance Standards Evaluate impacts of the newly proposed BAAL and FRR standards on the potential value of fast regulation and distributed regulation resources Develop a scope for the follow-up projects to pave a road for the new efficient types of balancing resources in California. The work included the following studies: Analysis of California ISO regulating units characteristics California ISO automatic generation system (AGC) analysis California ISO regulation procurement and market analysis Fast regulation efficiency analysis Projection of the California ISO load following and regulation requirements into the future Value of fast responsive resources depending on their ramping capability Potential impacts of the balancing authority area control error limit (BAAL), which is a part of the newly proposed NERC standard Balancing Resources and Demand Potential impacts of the Western Electricity Coordinating Council (WECC) frequency responsive reserve (FRR) standard Recommendations for the next phase of the project. The following main conclusions and suggestions for the future have been made: The analysis of regulation ramping requirements shows that the regulation system should be able to provide ramps of at least 40-60 MW per minute for a period up to 6 minutes. Evaluate if changes are needed in the California ISO AGC system to effectively accommodate new types of fast regulation resources and minimize the California ISO regulation procurement. California ISO may consider creating better market opportunities for and incentives for fast responsive resources. An additional study of low probability high ramp events can be recommended to the California ISO. The California ISO may be willing to consider establishing a more relaxed target CPS2 compliance level. A BAAL-related study can be recommended for the California ISO as soon as more clarity is achieved concerning the actual enforcement of the BAAL standard and its numerical values for the California ISO. The study may involve an assessment of advantages of the distributed frequency-based control for the California ISO system. The market-related issues that arise in this connection can be also investigated. A FRR-related study can be recommended for the California ISO as soon as more clarity is achieved concerning the actual enforcement of the FRR standard and its numerical values for the California ISO.

Makarov, Yuri V.; Lu, Shuai; Ma, Jian; Nguyen, Tony B.

2008-06-01T23:59:59.000Z

100

New Hardware and Software Design of a Field-Deployable Real-Time Laser-Based Non-Intrusive Detection System for Measurement of True Travel Time on the Highway  

E-Print Network (OSTI)

Time Laser-Based Prototype Detection System for MeasurementLaser-Based Non-Intrusive Detection System for MeasurementLaser-Based Non-Intrusive Detection System for Measurement

2001-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "alt base time" 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

ALT-GTS-Stem Fabrication  

Science Conference Proceedings (OSTI)

In 2007, a study investigated options to manufacture stems utilizing methods that would replace crush form grinding while maintaining or improving quality at a comparative cost. Crush form grinding is a special process used at the Kansas City Plant to finish stem sections of reservoir products. However, crush form grinding is a complex process with many variables affecting the final product. This study identified two potential methods that can be applied to stems. Profile grinding was investigated in 2007. This project continued in 2008 proving that single point turning on a multi-turret is an option with additional benefits. It is an economical way to meet floor space limitations for our KCRIMS mission.

Thuan Nguyen

2008-09-25T23:59:59.000Z

102

The blade flutter measurement based on the blade tip timing method  

Science Conference Proceedings (OSTI)

This paper deals with the measurement of the steam turbine blade vibrations in power systems via the blade tip timing (BTT) method. It describes a BTT principle and the sensor instrumentation for the vibration measurement. The introductory part of the ... Keywords: FPGA, blade tip timing, blade vibration, eddy current sensors, turbine

Vja?eslav Georgiev; Michael Holk; Vclav Kraus; Ale Krutina; Zden?k Kubn; Jind?ich Lika; Martin Poupa

2011-07-01T23:59:59.000Z

103

A time-based energy-efficient analog-to-digital converter  

E-Print Network (OSTI)

Dual-slope converters use time to perform analog-to-digital conversion but require 2N+1 clock cycles to achieve N bits of precision. We describe a novel algorithm that also uses time to perform analog-to-digital conversion ...

Yang, Heemin Yi, 1976-

2006-01-01T23:59:59.000Z

104

Time Series Prediction of Mining Subsidence Based on Genetic Algorithm Neural Network  

Science Conference Proceedings (OSTI)

In order to find out the dynamics law of underground coal mining subsidence, BP neural network was used for time series prediction. First, genetic algorithm was used to optimize the initial network weight to overcome the inherent defects of BP neural ... Keywords: Mining subsidence, time series, BP neural network, genetic algorithm

Peixian Li; Zhixiang Tan; Lili Yan; Kazhong Deng

2011-07-01T23:59:59.000Z

105

Multifunctional Nanowire/Film Composites-Based Bimodular Sensors for In Situ, Real-Time High Temperature Gas Detection  

NLE Websites -- All DOE Office Websites (Extended Search)

Multifunctional Nanowire/Film Multifunctional Nanowire/Film Composites-Based Bimodular Sensors for In Situ, Real-Time High Temperature Gas Detection Background Real time monitoring of combustion gas composition is important for improving the efficiency of combustion processes and reducing the emission of pollutants. However, such measurement usually requires sensors to be operated at high temperatures in harsh environments. Currently, commercially available sensor technology capable of withstanding such harsh environments is extremely

106

Development of an FPGA-based System for Real-Time Simulation of  

Science Conference Proceedings (OSTI)

Photovoltaic (PV) simulators are indispensable for the laboratory operational evaluation of PV energy production system components (e.g. battery chargers, DC/AC inverters etc.), in order to avoid the time-consuming and expensive field-testing process. ...

Eftichios Koutroulis; Kostas Kalaitzakis; Vasileios Tzitzilonis

2006-06-01T23:59:59.000Z

107

Real-time network traffic prediction based on a multiscale decomposition  

Science Conference Proceedings (OSTI)

The presence of the complex scaling behavior in network traffic makes accurate forecasting of the traffic a challenging task. In this paper we propose a multiscale decomposition approach to real time traffic prediction. The raw traffic data is first ...

Guoqiang Mao

2005-04-01T23:59:59.000Z

108

A New StatisticalDynamical Downscaling Procedure Based on EOF Analysis for Regional Time Series Generation  

Science Conference Proceedings (OSTI)

A new statisticaldynamical downscaling procedure is developed and then applied to high-resolution (regional) time series generation and wind resource assessment. The statistical module of the new procedure uses empirical orthogonal function (EOF) ...

Yosvany Martinez; Wei Yu; Hai Lin

2013-04-01T23:59:59.000Z

109

Determination of Storage Time of Rice Seed Using ANN Based on NIRS  

Science Conference Proceedings (OSTI)

A simple, fast and nondestructive approach was put forward to classify rice seed of different storage time. This discrimination was conducted by integrated with wavelet transform (WT), principal component analysis (PCA) and artificial neural networks ...

Zhu Dengsheng; Li Xiaoli

2007-06-01T23:59:59.000Z

110

Real-time timbral organisation: Selecting samples based upon similarity1  

Science Conference Proceedings (OSTI)

A comparison is made between two systems of real-time sample selection using timbral proximity that has relevance for live performance. Sound files in large sample libraries are analysed for audio features (amplitude RMS, spectral centroid, spectral ...

Arne Eigenfeldt; Philippe Pasquier

2010-08-01T23:59:59.000Z

111

A picosecond time-resolved electron energy spectrometer based on Cerenkov radiation  

Science Conference Proceedings (OSTI)

The energy spectrum of relativistic electrons is an important characterization of high intensity laser-matter interactions. We present a technique that utilizes Cerenkov radiation to measure the time-resolved energy distribution of electrons. Electrons escaping from targets irradiated by high-intensity laser pulses were measured, demonstrating the feasibility of such a novel diagnostic. Limitations on the time resolution of this diagnostic are also discussed.

Elberson, Lee N.; Hill, Wendell T. III [Institute for Physical Science and Technology, University of Maryland, College Park, Maryland 20742 (United States); Ping, Yuan; Shepherd, Ronnie L.; Patel, Pravesh K.; Mackinnon, Andrew J. [Lawrence Livermore National Laboratory, Livermore, California 94550-9234 (United States)

2009-02-15T23:59:59.000Z

112

Multidimensional Forward-in-Time and Upstream-in-Space-Based Differencing for Fluids  

Science Conference Proceedings (OSTI)

Multidimensional advection schemes based on the forward-upstream discretization are presented that with only one corrective step produce solutions comparable to the most accurate solutions produced by the multidimensional positive definite ...

Helge Drange; Rainer Bleck

1997-04-01T23:59:59.000Z

113

Playable universal capture: compression and real-time sequencing of image-based facial animation  

Science Conference Proceedings (OSTI)

This paper describes a facial animation playback scheme based on simultaneous encoding of captured face textures and geometric positions. The high quality facial data is acquired using a more robust variant of the Universal Capture (UCap) technique that ...

George Borshukov; Jefferson Montgomery; Witek Werner

2006-07-01T23:59:59.000Z

114

Time-domain Simulation of Multibody Floating Systems based on State-space Modeling Technology  

E-Print Network (OSTI)

A numerical scheme to simulate time-domain motion responses of multibody floating systems has been successfully proposed. This scheme is integrated into a time-domain simulation tool, with fully coupled hydrodynamic coefficients obtained from the hydrodynamic software - WAMIT which solves the Boundary Value Problem (BVP). The equations of motion are transformed into standard state-space format, using the constant coefficient approximation and the impulse response function method. Thus the Ordinary Differential Equation (ODE) solvers in MATLAB can be directly employed. The time-domain responses of a single spar at sea are initially obtained. The optimal Linear Quadratic Regulator (LQR) controller is further applied to this single spar, by assuming that the Dynamic Positioning (DP) system can provide the optimized thruster forces. Various factors that affect the controlling efficiency, e.g., the time steps ?? and ?t, the weighting factors(Q,R), are further investigated in detail. Next, a two-body floating system is studied. The response amplitude operators (RAOs) of each body are calculated and compared with the single body case. Then the effects of the body-to-body interaction coefficients on the time-domain responses are further investigated. Moreover, the mean drift force is incorporated in the DP system to further mitigate the motion responses of each body. Finally, this tool is extended to a three-body floating system, with the relative motions between them derived.

Yu, Xiaochuan

2011-08-01T23:59:59.000Z

115

An FPGA Based Multiprocessing CPU for Beam Synchronous Timing in CERN's SPS and LHC  

E-Print Network (OSTI)

The Beam Synchronous Timing system (BST) will be used around the LHC and its injector, the SPS, to broadcast timing meassages and synchronize actions with the beam in different receivers. To achieve beam synchronization, the BST Master card encodes messages using the bunch clock, with a nominal value of 40.079 MHz for the LHC. These messages are produced by a set of tasks every revolution period, which is every 89 us for the LHC and every 23 us for the SPS, therefore imposing a hard real-time constraint on the system. To achieve determinism, the BST Master uses a dedicated CPU inside its main Field Programmable Gate Array (FPGA) featuring zero-delay hardware task switching and a reduced instruction set. This paper describes the BST Master card, stressing the main FPGA design, as well as the associated software, including the LynxOS driver and the tailor-made assembler.

Ballester, F J; Gras, J J; Lewis, J; Savioz, J J; Serrano, J

2003-01-01T23:59:59.000Z

116

Microcontroller based system for electrical breakdown time delay measurement in gas-filled devices  

SciTech Connect

This paper presents realization of a digital embedded system for measuring electrical breakdown time delay. The proposed system consists of three major parts: dc voltage supply, analog subsystem, and a digital subsystem. Any dc power source with the range from 100 to 1000 V can be used in this application. The analog subsystem should provide fast and accurate voltage switching on the testing device as well as transform the signals that represent the voltage pulse on the device and the device breakdown into the form suitable for detection by a digital subsystem. The insulated gate bipolar transistor IRG4PH40KD driven by TC429 MOSFET driver is used for high voltage switching on the device. The aim of a digital subsystem is to detect the signals from the analog subsystem and to measure the elapsed time between their occurrences. Moreover, the digital subsystem controls various parameters that influence time delay and provides fast data storage for a large number of measured data. For this propose, we used the PIC18F4550 microcontroller with a full-speed compatible universal serial bus (USB) engine. Operation of this system is verified on different commercial and custom made gas devices with different structure and breakdown mechanisms. The electrical breakdown time delay measurements have been carried out as a function of several parameters, which dominantly influence electrical breakdown time delay. The obtained results have been verified using statistical methods, and they show good agreement with the theory. The proposed system shows good repeatability, sensitivity, and stability for measuring the electrical breakdown time delay.

Pejovic, Milic M.; Denic, Dragan B.; Pejovic, Momcilo M.; Nesic, Nikola T.; Vasovic, Nikola [Faculty of Electronic Engineering, University of Nis, Aleksandra Medvedeva 14, 18000 Nis (Serbia)

2010-10-15T23:59:59.000Z

117

CMOS Open Defect Detection Based on Supply Current in Time-Variable Electric Field and Supply Voltage Application  

Science Conference Proceedings (OSTI)

In this paper, a new test method is proposed for detecting open defects in CMOS ICs. The method is based on supply current of ICs generated by applying time-variable supply voltage and electric field from the outside of the ICs. The feasibility of the ...

Masaki Hashizume; Masahiro Ichimiya; Hiroyuki Yotsuyanagi; Takeomi Tamesada

2001-11-01T23:59:59.000Z

118

A novel real-time coalminer localization and tracking system based on self-organized sensor networks  

Science Conference Proceedings (OSTI)

With the development of information technology, we envision that the key of improving coal mine safety is how to get realtime positions of miners. In this paper, we propose a prototype system for real-time coal miner localization and tracking based on ...

Yang Wang; Liusheng Huang; Wei Yang

2010-02-01T23:59:59.000Z

119

A 4th order continuous-time [Delta] [Epsilon] ADC with VCO-based integrator and quantizer  

E-Print Network (OSTI)

The use of a VCO-based integrator and quantizer within a continuous-time (CT) [Delta] [Epsilon] analog-to-digital converter (ADC) structure is explored, and a custom prototype in a 0.13 [mu]m CMOS with a measured performance ...

Park, Matthew Jeremiah

2009-01-01T23:59:59.000Z

120

Direct atomic-orbital-based time-dependent Hartree-Fock calculations of frequency-dependent polarizabilities  

E-Print Network (OSTI)

Direct atomic-orbital-based time-dependent Hartree-Fock calculations of frequencyDepartment, Universityof Utah, Salt Lake City, Utah 84112 (Received 27 September 1991; accepted 13 November 1991) We have formulated and implemented a direct atomic integral driven method for the calculation of frequency

Simons, Jack

Note: This page contains sample records for the topic "alt base time" 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

A view-based real-time human action recognition system as an interface for human computer interaction  

Science Conference Proceedings (OSTI)

This paper describes a real-time human action recognition system that can track multiple persons and recognize distinct human actions through image sequences acquired from a single fixed camera. In particular, when given an image, the system segments ... Keywords: HCI, adaptive background subtraction, motion history image, view-based action recognition

Jin Choi; Yong-Il Cho; Taewoo Han; Hyun S. Yang

2007-09-01T23:59:59.000Z

122

Quality time-of-flight range imaging for feature-based registration using bacterial foraging  

Science Conference Proceedings (OSTI)

Image registration is a widely tackled research topic in the computer vision and the computer graphics fields. This problem aims to find an optimal transformation or correspondence between images acquired under different conditions. Recently, a new 3D ... Keywords: 3D modelling, Bacterial foraging, Evolutionary computation, Image registration, Time of flight

E. Bermejo, O. CordN, S. Damas, J. SantamarA

2013-06-01T23:59:59.000Z

123

VBR MPEG Video Traffic Dynamic Prediction Based on the Modeling and Forecast of Time Series  

Science Conference Proceedings (OSTI)

The variable-bit-rate traffic characteristic brings a large complication to the utilization of network resources, especially bandwidth. To solve this problem, this paper proposes a dynamic prediction scheme of MPEG video traffic. We first advance an ... Keywords: MPEG, video trace, forecast, time series, ARMA

Jun Dai; Jun Li

2009-08-01T23:59:59.000Z

124

A class of learning algorithms for principal component analysis based on time-oriented hierarchical method  

Science Conference Proceedings (OSTI)

This paper presents a class of algorithms for principal component analysis obtained by modification of a class of algorithms for principal subspace analysis (PSA) known as Plumbley's General Stochastic Approximation. Modification of the algorithms is ... Keywords: PCA, PSA, general stochastic approximation, neural networks, time hierarchy

Marko V. Jankovic

2006-04-01T23:59:59.000Z

125

Chaotic Time Series Forecasting Base on Fuzzy Adaptive PSO for Feedforward Neural Network Training  

Science Conference Proceedings (OSTI)

Short-term electricity demand forecasting for the next hour to several days out is one of the most important tools by which an electric utility plans and dispatches the loading of generating units in order to meet system demand. But there exists chaos ... Keywords: Particle Swarm Optimization (PSO), chaotic time Series, fuzzy system, feedforward neural network

Wenyu Zhang; Jinzhao Liang; Jianzhou Wang; Jinxing Che

2008-11-01T23:59:59.000Z

126

Development of an FPGA-based system for real-time simulation of photovoltaic modules  

Science Conference Proceedings (OSTI)

Photovoltaic (PV) simulators are indispensable for the operational evaluation of PV energy production system components (e.g. battery chargers, DC/AC inverters, etc.), in order to avoid the time-consuming and expensive field-testing process. In this ... Keywords: DC/DC converter, Field programmable gate array, Photovoltaic system, Rapid system prototyping, Simulator

Eftichios Koutroulis; Kostas Kalaitzakis; Vasileios Tzitzilonis

2009-07-01T23:59:59.000Z

127

Stabilizing technique for AC-DC boost PFC converter based on time delay feedback  

Science Conference Proceedings (OSTI)

It is well known that the ac-dc power factor correction (PFC) boost preregulator can present instability at the line frequency. This nonlinear phenomenon can jeopardize the system performances by increasing the total harmonic distortion and decreasing ... Keywords: ac-dc converters, line frequency instability, power factor correction (PFC), time delay feedback (TDF)

Abdelali El Aroudi; Mohamed Orabi

2010-01-01T23:59:59.000Z

128

Real-time haptic incision simulation using FEM-based discontinuous free form deformation  

Science Conference Proceedings (OSTI)

Computer-aided surgical simulation is a topic of increasingly extensive research. Computer graphics, geometric modeling and finite-element analysis all play major roles in these simulations. Furthermore, real-time response, interactivity and accuracy ... Keywords: finite element model, free-form deformation, surgical simulation

Guy Sela; Jacob Subag; Alex Lindblad; Dan Albocher; Sagi Schein; Gershon Elber

2006-06-01T23:59:59.000Z

129

Simulation-based utility assessment of real-time information for sustainable mining operations  

Science Conference Proceedings (OSTI)

In capital intensive industries such as coalmines, real-time information is useful to run their operations within sustainable limits, and to enable early detection and response to deviations from those limits. The goal of this research is to assess the ...

Sai Srinivas Nageshwaraniyer; Chao Meng; Young-Jun Son; Sean Dessureault

2011-12-01T23:59:59.000Z

130

Technical Section: Stream-based animation of real-time crowd scenes  

Science Conference Proceedings (OSTI)

We present a new way of drawing a crowd of animated characters in real-time. Previous work has focused almost exclusively on how to visualize ever larger crowd scenes and the current state-of-the-art can display tens of thousands of virtual humans with ... Keywords: Animation, Crowd simulation, OpenCL

Wayne Daniel Lister; Andy Day

2012-10-01T23:59:59.000Z

131

Real-time location and inpatient care systems based on passive RFID  

Science Conference Proceedings (OSTI)

RFID technology meets identification and tracking requirements in healthcare environments with potential to speed up and increase reliability of involved processes. Due to this, high expectations for this integration have emerged, but hospital and medical ... Keywords: EPC Gen1&2 performance, Hospital information system, Inpatient management, Medical asset management, Real-time location system

Pablo Najera; Javier Lopez; Rodrigo Roman

2011-05-01T23:59:59.000Z

132

A multi-category inter-purchase time model based on hierarchical Bayesian theory  

Science Conference Proceedings (OSTI)

Because of recent diversity in consumer demands and the decrease in popularity of mass media, one-to-one database marketing is being increasingly used by companies to increase their competitiveness. Many studies have addressed the issue of inter-purchase ... Keywords: Catalog shopping, Hierarchical Bayesian model, Inter-purchase time

Ruey-Shan Guo

2009-04-01T23:59:59.000Z

133

Time Series Measurements from a Moored Fluorescence-Based Dissolved Oxygen Sensor  

Science Conference Proceedings (OSTI)

We present an analysis of time-series measurements from a prototype fluorescence-quenching dissolved oxygen sensor moored for a six-day period in late March 1987 at 100 m depth in Saanich Inlet, British Columbia. Temporal variations in dissolved ...

Richard E. Thomson; Terrence A. Curran; M. Coreen Hamilton; Ronald McFarlane

1988-10-01T23:59:59.000Z

134

Real-Time Obstacle Avoidance Method for Mobile Robots Based on a Modified Particle Swarm Optimization  

Science Conference Proceedings (OSTI)

A novel method for the robot path planning in dynamic environment is presented in this paper. Based on the analysis of visual modeling, the reason of premature convergence and diversity loss in PSO is explained, and a new modified algorithm is proposed ... Keywords: Obstacle Avoidance, Particle Swarm Optimization, path planning

Yuxin Zhao; Wei Zu

2009-04-01T23:59:59.000Z

135

Automated CO2 and VOC-Based Control of Ventilation Systems Under Real-Time Pricing  

Science Conference Proceedings (OSTI)

The potential for shedding or shifting building electric loads in response to real-time prices (RTP) can be significant. Such a strategy provides cost reduction opportunities for commercial building customers as well as load reduction opportunities for electric utilities. This report describes the successful demonstration of an integrated RTP sensor/control system designed to increase the energy efficiency of building ventilation systems, while maintaining indoor air quality via CO2 and volatile organic ...

1998-11-02T23:59:59.000Z

136

A Gas Dynamics Method Based on The Spectral Deferred Corrections (SDC) Time Integration Technique and The Piecewise Parabolic Method (PPM)  

SciTech Connect

We present a computational gas dynamics method based on the Spectral Deferred Corrections (SDC) time integration technique and the Piecewise Parabolic Method (PPM) finite volume method. The PPM framework is used to define edge averaged quantities which are then used to evaluate numerical flux functions. The SDC technique is used to integrate solution in time. This kind of approach was first taken by Anita et al in [17]. However, [17] is problematic when it is implemented to certain shock problems. Here we propose significant improvements to [17]. The method is fourth order (both in space and time) for smooth flows, and provides highly resolved discontinuous solutions. We tested the method by solving variety of problems. Results indicate that the fourth order of accuracy in both space and time has been achieved when the flow is smooth. Results also demonstrate the shock capturing ability of the method.

Samet Y. Kadioglu

2011-12-01T23:59:59.000Z

137

Next-Generation Liquid-Scintillator-Based Detectors: Quantums Dots and Picosecond Timing  

E-Print Network (OSTI)

Liquid-scintillator-based detectors are a robust technology that scales well to large volumes. For this reason, they are attractive for experiments searching for neutrinoless double-beta decay. A combination of improved photo-detection technology and novel liquid scintillators may allow for the extraction of particle direction in addition to the total energy of the particle. Such an advance would find applications beyond searches for neutrinoless double-beta decay.

Lindley Winslow

2013-07-10T23:59:59.000Z

138

USING RISK-BASED STANDARDS WILL SHORTEN CLEANUP TIME AT PETROLEUM CONTAMINATED SITES  

E-Print Network (OSTI)

The Air Force has identified more than 4,500 sites that require environmental investigation and possible remediation. About 2,500 of these are contaminated with petroleum hydrocarbons such as jet fuel, diesel, gasoline, and heating oil. Many of the sites that require remediation will be cleaned up based on an established regulatory standard. Many state and federal regulators routinely enforce a soil cleanup standard of 100 mg/kg total petroleum hydrocarbons (TPH). Several states have lowered this standard to 50 mg/kg TPH just for "good measure." The 100 mg/kg TPH standard is often used across the board--without regard for the type of petroleum hydrocarbon contamination being remediated and with little thought about the risk-based standards on which that figure was established. But where exactly did the number come from and and how did it become a standard in the first place? The answer can be traced to the California Leaking Underground Fuel Tank Field Manual, or LUFT, a manual designed to provide a consistent approach to underground storage tank spills (State of California, 1989). The LUFT manual clearly illustrates that the 100 mg/kg TPH standard is based on a

Lieutenant Colonel; Ross N. Miller; Lieutenant Colonel; Ross N. Miller

1992-01-01T23:59:59.000Z

139

ParaGraph-RTS: A parallel reduction-based run-time system  

Science Conference Proceedings (OSTI)

We are investigating the use of the functional programming paradigm on multiprocessor computers. We have developed a parallel graph reduction run-time system called ParaGraph-RTS (Parallel Graph Reduction) that provides both significant amounts of exploitable parallelism and the robustness to support development of large scientific codes. This system allows us to empirically investigate the functional programming paradigm within computationally intensive application domains. In this paper, we describe an implementation of ParaGraph-RTS on a shared-memory multiprocessor. The implementation strategy reflects insights gained through performance characterizations of the reduction process. Preliminary performance results and analyses are presented. 8 refs., 4 figs.

Yantis, B.; Rich, D.; Michelsen, R.

1989-01-01T23:59:59.000Z

140

FPGA Based Real-time Network Traffic Analysis using Traffic Dispersion Patterns  

SciTech Connect

The problem of Network Traffic Classification (NTC) has attracted significant amount of interest in the research community, offering a wide range of solutions at various levels. The core challenge is in addressing high amounts of traffic diversity found in today's networks. The problem becomes more challenging if a quick detection is required as in the case of identifying malicious network behavior or new applications like peer-to-peer traffic that have potential to quickly throttle the network bandwidth or cause significant damage. Recently, Traffic Dispersion Graphs (TDGs) have been introduced as a viable candidate for NTC. The TDGs work by forming a network wide communication graphs that embed characteristic patterns of underlying network applications. However, these patterns need to be quickly evaluated for mounting real-time response against them. This paper addresses these concerns and presents a novel solution for real-time analysis of Traffic Dispersion Metrics (TDMs) in the TDGs. We evaluate the dispersion metrics of interest and present a dedicated solution on an FPGA for their analysis. We also present analytical measures and empirically evaluate operating effectiveness of our design. The mapped design on Virtex-5 device can process 7.4 million packets/second for a TDG comprising of 10k flows at very high accuracies of over 96%.

Khan, F; Gokhale, M; Chuah, C N

2010-03-26T23:59:59.000Z

Note: This page contains sample records for the topic "alt base time" 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

Size-based Scheduling with Differentiated Services to Improve Response Time of Highly Varying Flow Sizes  

E-Print Network (OSTI)

The sizes of Internet objects are known to be highly varying. We evaluate an M/G/1 queue under foreground background N (FBN ) scheduling policy for job size distributions with varying coefficient of variability (CoV) to analyze the impact of variability of job sizes to the performance of the policy. We find that FBN is very efficient in reducing the response time and minimizing the number of jobs that are penalized (i.e., have a higher response time under FBN than under processor sharing (PS)) when job sizes have a high CoV. We also propose and analyze variants of FBN called fixed priority FBN (FP \\Gamma FBN ) and differential FBN (DF \\Gamma FBN ), which introduce service differentiation by classifying jobs into high priority and low priority and then servicing the high priority before low priority jobs in an FBN related order. The numerical analysis conducted for highly varying job sizes reveals that FP \\Gamma FBN achieves a perfect service differentiation at the expense of a high penalty for the low priority small jobs. While DF \\Gamma FBN offers acceptable service differentiation, it does not penalize small jobs with low priority at all. Moreover, FP \\Gamma FBN and DF \\Gamma FBN can guarantee the service of high priority jobs even under overload.

Idris A. Rai; Guillaume Urvoy-keller; Ernst W. Biersack

2002-01-01T23:59:59.000Z

142

Yucca Mountain Licensing Standard Options for Very Long Time Frames: Technical Bases for the Standard and Compliance Assessments  

Science Conference Proceedings (OSTI)

In the existing U.S. Environmental Protection Agency (EPA) and Nuclear Regulatory Commission (NRC) regulations governing the spent nuclear fuel and high-level radioactive waste site at Yucca Mountain, Nevada, the time period of compliance was set at 10,000 years. Recently, a Court ordered that EPA and NRC either revise the regulation on this topic to be "based upon and consistent with" recommendations made by a panel of the National Academy of Sciences, who recommended a time period of compliance out to ...

2005-04-11T23:59:59.000Z

143

Vacuum-Based Time-Resolved Photoluminescence Measurement System Provides New Capability (Fact Sheet)  

DOE Green Energy (OSTI)

New measurement capability measures semiconductor minority-carrier lifetimes in conditions that simulate thin-film photovoltaic manufacturing environments. National Renewable Energy Laboratory (NREL) scientists have developed a new capability for measuring time-resolved photoluminescence (TRPL) in controlled environments, including under high vacuum and at elevated temperatures. This system enables the simulation of conditions in a thin-film photovoltaic (PV) manufacturing line. NREL's work in recent years has demonstrated a clear correlation between minority-carrier lifetime and thin-film PV device performance. Hence, the thin-film PV industry-both CIGS and CdTe-has a high level of interest for in-line metrology using NREL's TRPL system. The system, shown below, couples femtosecond laser pulses with optical fibers while avoiding spectral or temporal broadening over a wide range of wavelengths. The optics are designed to collect and couple the TRPL signal into the same fiber used to deliver the laser pulses. The capability is coupled into a high-vacuum chamber that can heat samples to 500 C or higher and expose them to reactive ambients. This tool will allow NREL to partner with industry to evaluate TRPL as a diagnostic at multiple stages of the manufacturing process and determine correlations to final module efficiency. The TRPL system has the potential to significantly improve manufacturing yield and throughput of current thin-film PV manufacturers. NREL developed a time-resolved photoluminescence (TRPL) system that can operate under high vacuum and at high temperatures. Thin-film PV performance can be better assessed because of its clear correlation with minority-carrier lifetime, which can be measured by NREL's TRPL system. Photovoltaic thin-film makers will be able to measure in-line TRPL at various stages of the manufacturing process, potentially leading to improved yield and throughput.

Not Available

2011-11-01T23:59:59.000Z

144

A GEM-based Time Projection Chamber for the AMADEUS experiment  

E-Print Network (OSTI)

In this paper we present the R&D activity on a new GEM-based TPC prototype for AMADEUS, a new experimental proposal at the DA{\\Phi}NE {\\Phi}-factory at the Laboratori Nazionali di Frascati (INFN), aiming to perform measurements of the low-energy negative kaons interactions in nuclei. Such innovative detector will equip the inner part of the experiment in order to perfom a better reconstruction of the primary vertex and the secondary particles tracking. A 10x10 cm2 prototype with a drift gap up to 15 cm was realized and succesfully tested at the {\\pi} M1 beam facility of the Paul Scherrer Institut (PSI) with low momentum hadrons. The measurements of the detector efficiency and spatial resolution have been performed. The results as a function of the gas gain, drift field, front-end electronic threshold and particle momentum are reported and discussed.

M. Poli Lener; M. Bazzi; G. Corradi; C. Curceanu; A. D'Uffizi; C. Paglia; E. Sbardella; A. Scordo; D. Tagnani; A. Romero Vidal; J. Zmeskal

2013-04-23T23:59:59.000Z

145

Quantifying the Impacts of Time-Based Rates, Enabling Technology, and Other Treatments in Consumer Behavior Studies: Protocols and Guidelines  

Science Conference Proceedings (OSTI)

This report offers guidelines and protocols for measuring the effects of time-based rates, enabling technology, and various other treatments on customers levels and patterns of electricity usage. Although the focus is on evaluating consumer behavior studies (CBS) that involve field trials and pilots, the methods can be extended to assessing the large-scale programs that may follow. CBSs are undertaken to resolve uncertainties and ambiguities about how consumers respond to inducements to ...

2013-07-17T23:59:59.000Z

146

Group-based Query Learning for rapid diagnosis in time-critical situations  

E-Print Network (OSTI)

In query learning, the goal is to identify an unknown object while minimizing the number of "yes or no" questions (queries) posed about that object. We consider three extensions of this fundamental problem that are motivated by practical considerations in real-world, time-critical identification tasks such as emergency response. First, we consider the problem where the objects are partitioned into groups, and the goal is to identify only the group to which the object belongs. Second, we address the situation where the queries are partitioned into groups, and an algorithm may suggest a group of queries to a human user, who then selects the actual query. Third, we consider the problem of query learning in the presence of persistent query noise, and relate it to group identification. To address these problems we show that a standard algorithm for query learning, known as the splitting algorithm or generalized binary search, may be viewed as a generalization of Shannon-Fano coding. We then extend this result to t...

Bellala, Gowtham; Scott, Clayton

2009-01-01T23:59:59.000Z

147

A Real-time Integration of Concept-based Search and Summarization on Chinese Websites  

E-Print Network (OSTI)

This paper introduces an intuitive search environment for casual and novice Chinese users over Internet. The system consists of four components, a concept network, a query reformulation model, a standard search engine, and an automatic summarizer. When the user enters one or more fairly general and vague terms, the search engine returns an initial answer set, and at the same time pipes the query to the concept network that connects thousands of conceptual nodes, each referring to a specific concept for a given domain and pointing to a number of associated conceptual terms. If the concept is located in the network, the related conceptual terms are displayed. The user has the option of using one or more of these specific terms to reformulate the next round of searches. Such search iterations continue until the user' s ultimate information seeking goal is reached. For each search iteration, auto summarizer presents the main theme of the document retrieved and an optional text-to-speech engine can read out the output summary if the user prefers.

Joe F Zhou; Weiquan Liu

2000-01-01T23:59:59.000Z

148

PC-Cluster-Based Real-Time Simulation of an 8 synchronous machines network with HVDC link using  

E-Print Network (OSTI)

AbstractIn this paper, we detail the real-time simulation results of a medium-sized network composed of 8 synchronous machines and an HVDC link. The model is composed of two Kundur-like 4 machines networks connected together with a 12pulse HVDC link. The complete network is modeled with SimPowerSystems with ARTEMIS real-time plug-in and is simulated in real-time on a RT-LAB InfiniBand PC-cluster composed of 3 dual-CPU dual-core Opteron PCs. The network model includes the HVDC control and protection systems as well as the synchronous machine regulators and power stabilizers. It also includes typical fault simulation capability like HVDC DC faults, thyristor misfires and AC faults. This model is excellent to study the complex interactions between an HVDC link and AC network under normal and transient conditions. The real-time simulation is controlled and monitored with a TestDrive interface from Opal-RT. This interface, based on LabView, permits easy monitoring and control of the complete system and enables Python-based scripting for automated tests. The proposed simulator can be interfaced with external equipments and controllers by direct reconfiguration of a FPGA I/O card with Xilinx System Generator blockset.

Christian Dufour; Jean-nicolas Paquin; Vincent Lapointe; Jean Blanger; Loic Schoen

2007-01-01T23:59:59.000Z

149

A Comprehensive Statistically-Based Method to Interpret Real-Time Flowing Measurements  

DOE Green Energy (OSTI)

This project is motivated by the increasing use of distributed temperature sensors for real-time monitoring of complex wells (horizontal, multilateral and multi-branching wells) to infer the profiles of oil, gas, and water entry. Measured information can be used to interpret flow profiles along the wellbore including junction and build section. In this second project year, we have completed a forward model to predict temperature and pressure profiles in complex wells. As a comprehensive temperature model, we have developed an analytical reservoir flow model which takes into account Joule-Thomson effects in the near well vicinity and multiphase non-isothermal producing wellbore model, and couples those models accounting mass and heat transfer between them. For further inferences such as water coning or gas evaporation, we will need a numerical non-isothermal reservoir simulator, and unlike existing (thermal recovery, geothermal) simulators, it should capture subtle temperature change occurring in a normal production. We will show the results from the analytical coupled model (analytical reservoir solution coupled with numerical multi-segment well model) to infer the anomalous temperature or pressure profiles under various conditions, and the preliminary results from the numerical coupled reservoir model which solves full matrix including wellbore grids. We applied Ramey's model to the build section and used an enthalpy balance to infer the temperature profile at the junction. The multilateral wellbore temperature model was applied to a wide range of cases varying fluid thermal properties, absolute values of temperature and pressure, geothermal gradients, flow rates from each lateral, and the trajectories of each build section.

Pinan Dawkrajai; Keita Yoshioka; Analis A. Romero; Ding Zhu; A.D. Hill; Larry W. Lake

2005-10-01T23:59:59.000Z

150

A web-based approach to image-based lighting using high dynamic range images and QuickTime object virtual reality  

E-Print Network (OSTI)

This thesis presents a web-based approach to lighting three-dimensional geometry in a virtual scene. The use of High Dynamic Range (HDR) images for the lighting model makes it possible to convey a greater sense of photorealism than can be provided with a conventional computer generated three-point lighting setup. The use of QuickTime Object Virtual Reality to display the three-dimensional geometry offers a sophisticated user experience and a convenient method for viewing virtual objects over the web. With this work, I generate original High Dynamic Range images for the purpose of image-based lighting and use the QuickTime Object Virtual Reality framework to creatively alter the paradigm of object VR for use in object lighting. The result is two scenarios: one that allows for the virtual manipulation of an object within a lit scene, and another with the virtual manipulation of light around a static object. Future work might include the animation of High Dynamic Range image-based lighting, with emphasis on such features as depth of field and glare generation.

Cuellar, Tamara Melissa

2008-05-01T23:59:59.000Z

151

Finite-key analysis of high-dimensional time-energy entanglement-based quantum key distribution  

E-Print Network (OSTI)

We present a security analysis against collective attacks for the recently proposed time-energy entanglement-based quantum key distribution protocol, given the practical constraints of single photon detector efficiency, channel loss, and finite-key considerations. We find a positive secure-key capacity when the key length increases beyond $10^4$ for eight-dimensional systems. The minimum key length required is reduced by the ability to post-select on coincident single-photon detection events. Including finite-key effects, we show the ability to establish a shared secret key over a 200 km fiber link.

Catherine Lee; Jacob Mower; Zheshen Zhang; Jeffrey H. Shapiro; Dirk Englund

2013-11-05T23:59:59.000Z

152

A real-time respiration position based passive breath gating equipment for gated radiotherapy: A preclinical evaluation  

Science Conference Proceedings (OSTI)

Purpose: To develop a passive gating system incorporating with the real-time position management (RPM) system for the gated radiotherapy. Methods: Passive breath gating (PBG) equipment, which consists of a breath-hold valve, a controller mechanism, a mouthpiece kit, and a supporting frame, was designed. A commercial real-time positioning management system was implemented to synchronize the target motion and radiation delivery on a linear accelerator with the patient's breathing cycle. The respiratory related target motion was investigated by using the RPM system for correlating the external markers with the internal target motion while using PBG for passively blocking patient's breathing. Six patients were enrolled in the preclinical feasibility and efficiency study of the PBG system. Results: PBG equipment was designed and fabricated. The PBG can be manually triggered or released to block or unblock patient's breathing. A clinical workflow was outlined to integrate the PBG with the RPM system. After implementing the RPM based PBG system, the breath-hold period can be prolonged to 15-25 s and the treatment delivery efficiency for each field can be improved by 200%-400%. The results from the six patients showed that the diaphragm motion caused by respiration was reduced to less than 3 mm and the position of the diaphragm was reproducible for difference gating periods. Conclusions: A RPM based PBG system was developed and implemented. With the new gating system, the patient's breath-hold time can be extended and a significant improvement in the treatment delivery efficiency can also be achieved.

Hu Weigang; Xu Anjie; Li Guichao; Zhang Zhen; Housley, Dave; Ye Jinsong [Department of Radiation Oncology, Fudan University Shanghai Cancer Center and Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032 (China); Department of Radiation Oncology, Swedish Cancer Institute, Seattle, Washington 98104 (United States)

2012-03-15T23:59:59.000Z

153

Time for atomic and molecular data bases is now (an overview of data management research at LLL)  

SciTech Connect

Two numerical data bases of atomic and molecular (A and M) data required for laser-induced fusion studies were created. One file contains primarily atomic energy levels and atomic transition data released by Charlotte E. Moore in NBS publications. The second file is based on the spectroscopic constants for more than 1000 molecular levels of approximately 160 heteronuclear diatomic molecules prepared by S. N. Suchard. Additional data bases are contemplated in support of the accelerating research activities in these fields. The present paucity of authenticated, computer-readable A and M data is not unlike that observed two decades ago in nuclear fission research. At that time, emphasis was also given to the accurate measurement of physical parameters and to reaction rates which eventually led to the ENDF/B series of evaluated neutron cross sections. Today, powerful computers have a more dominant role in modeling and predicting the results of promising experiments. Their effective use, however, depends more than ever before upon the availability of comprehensive and accurate files of A and M data. At the Lawrence Livermore Laboratory (LLL), these requirements are accentuated by the heavy reliance on computers. Also, trends are presently becoming apparent among users of the national computer network for Magnetic Fusion Energy, with its center at LLL, to coalesce organization-dependent data files into central data bases containing bibliographic information and numerical data as a common resource. The Data Management Research Project is collaborating with the National Bureau of Standards (NBS/NSRDS) to be able to respond to the emerging requirements. This should contribute to a ''Public Well'' of atomic and molecular data, unencumbered by legal or monetary constraints. 14 figures.

Hampel, V.E.; Henry, E.A.

1977-02-01T23:59:59.000Z

154

CERTS 2012 Program Review - Real-Time Wide-Area Montoring Tool Based on CELL Method - Yuri Makarov, PNNL  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DOE/CERTS Internal Program Review DOE/CERTS Internal Program Review Real-Time Wide-Area Monitoring Tool Based on Characteristic Ellipsoid Method (CELL) Yuri Makarov Pacific Northwest National Laboratory (E-mail: yuri.makarov@pnnl.gov) June 12-13, 2012 Washington DC 2 Acknowledgements Phil N. Overholt, DOE Jeff E. Dagle, PNNL, CERTS PM Joe H. Eto, LBNL, CERTS PM Jian Ma, Burns & McDonnell, Former Project Lead 3 Project Objectives and Quick Overview  Objective:  Develop a relatively simple, easy-to-implement and easy-to-use tool to monitor, predict and control the dynamic behavior of power systems for wide-area situational awareness, prediction and decision making support for operators  Specific Objectives:  Monitor dynamic behaviors of power systems

155

Long-range time-of-flight scanning sensor based on high-speed time-correlated single-photon counting  

E-Print Network (OSTI)

are acquired using a scanning optical system and an individual single-photon detector. Depth images have been-and-tilt head mechanism to scan a compact optical system containing an opti- mized silicon single identification under daylight conditions [12]. Time-of-flight imaging systems using arrays of sin- gle

Buller, Gerald S.

156

Near-Real-Time Measurement of Sea-Salt Aerosol during the SEAS Campaign: Comparison of Emission-Based Sodium Detection with an Aerosol Volatility Technique  

Science Conference Proceedings (OSTI)

The first deployment of an emission-based aerosol sodium detector (ASD), designed to chemically characterize marine aerosols on a near-real-time basis, is reported. Deployment occurred as part of the Shoreline Environment Aerosol Study (SEAS) ...

P. Campuzano-Jost; C. D. Clark; H. Maring; D. S. Covert; S. Howell; V. Kapustin; K. A. Clarke; E. S. Saltzman; A. J. Hynes

2003-10-01T23:59:59.000Z

157

Summary of Time Period-Based and Other Approximation Methods for Determining the Capacity Value of Wind and Solar in the United States: September 2010 - February 2012  

DOE Green Energy (OSTI)

This paper updates previous work that describes time period-based and other approximation methods for estimating the capacity value of wind power and extends it to include solar power. The paper summarizes various methods presented in utility integrated resource plans, regional transmission organization methodologies, regional stakeholder initiatives, regulatory proceedings, and academic and industry studies. Time period-based approximation methods typically measure the contribution of a wind or solar plant at the time of system peak - sometimes over a period of months or the average of multiple years.

Rogers, J.; Porter, K.

2012-03-01T23:59:59.000Z

158

A novel HMM-based clustering algorithm for the analysis of gene expression time-course data  

Science Conference Proceedings (OSTI)

A novel hidden Markov model (HMM) and clustering algorithm for the analysis of gene expression time-course data is proposed. The proposed model, called the profile-HMM, is specifically designed to explicitly take into account the dynamic nature of temporal ... Keywords: Clustering, Gene expression time-course data, Hidden Markov models, Temporal dependences, Time-series analysis

Yujing Zeng; Javier Garcia-Frias

2006-05-01T23:59:59.000Z

159

Design and Control of a Compact 6-Degree-of-Freedom Precision Positioner with Linux- Based Real-Time Control  

E-Print Network (OSTI)

This dissertation presents the design, control, and implementation of a compact highprecision multidimensional positioner. This precision-positioning system consists of a novel concentrated-field magnet matrix and a triangular single-moving part that carries three 3-phase permanent-magnet planar-levitation-motor armatures. Since only a single levitated moving part, namely the platen, generates all required fine and coarse motions, this positioning system is reliable and potentially cost-effective. The three planar levitation motors based on the Lorentz-force law not only produce the vertical force to levitate the triangular platen but also control the platen's position and orientation in the horizontal plane. Three laser distance sensors are used to measure vertical, x-, and yrotation motions. Three 2-axis Hall-effect sensors are used to determine lateral motions and rotation motion about the z-axis by measuring the magnetic flux density generated by the magnet matrix. This positioning system has a total mass of 1.52 kg, which is the minimized mass to produce better dynamic performance. In order to reduce the mass of the moving platen, it is made of Delrin with a mass density of 1.54 g/cm3 by Computer Numerical Controlled (CNC) machining. The platen can be regarded a pure mass, and the spring and damping effects are neglected except for the vertical dynamic. Single-input single-output (SISO) digital lead-lag controllers and a multivariable Linear Quadratic Gaussian (LQG) controller were designed and implemented. Real-time control was performed with the Linux-Ubuntu operating system OS. Real Time Application Interface (RTAI) for Linux works with Comedi and Comedi libraries and enables closed-loop real-time control. One of the key advantages of this positioning stage with Hall-effect sensors is the extended travel range and rotation angle in the horizontal mode. The maximum travel ranges of 220 mm in x and 200 mm in y were achieved experimentally. Since the magnet matrix generates periodical sinusoidal flux densities in the x-y plane, the travel range can be extended by increasing the number of magnet pitches. The rotation angle of 12 degrees was achieved in rotation around z. The angular velocities of 0.2094 rad/s and 4.74 rad/s were produced by a 200-mm-diameter circular motion and a 30-mm-diameter spiral motion, respectively. The maximum velocity of 16.25 mm/s was acquired from over one pitch motion. The maximum velocity of 17.5 mm/s in a 8-mm scanning motion was achieved with the acceleration of 72.4 m/s2. Step responses demonstrated a 10-um resolution and 6-um rms position noise in the translational mode. For the vertical mode, step responses of 5 um in z, 0.001 degrees in roation around x, and 0.001 degrees in rotation around y were achieved. This compact single-moving-part positioner has potential applications for precisionpositioning systems in semiconductor- manufacturing.

Yu, Ho

2009-08-01T23:59:59.000Z

160

The impact of next and back buttons on time to complete and measurement reliability in computer-based surveys  

E-Print Network (OSTI)

Research Methods, Instruments, & Computers, 29, 274279. 3.and measurement reliability in computer-based surveys Ron D.measurement reliability of computer-based surveys. Methods A

Hays, Ron D.; Bode, Rita; Rothrock, Nan; Riley, William; Cella, David; Gershon, Richard

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "alt base time" 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

A novel statistical time-series pattern based interval forecasting strategy for activity durations in workflow systems  

Science Conference Proceedings (OSTI)

Forecasting workflow activity durations is of great importance to support satisfactory QoS in workflow systems. Traditionally, a workflow system is often designed to facilitate the process automation in a specific application domain where activities ... Keywords: Activity duration, Interval forecasting, Statistical time series, Time-series patterns, Workflow system

Xiao Liu; Zhiwei Ni; Dong Yuan; Yuanchun Jiang; Zhangjun Wu; Jinjun Chen; Yun Yang

2011-03-01T23:59:59.000Z

162

Possibility of Skill Forecast Based on the Finite-Time Dominant Linear Solutions for a Primitive Equation Regional Forecast Model  

Science Conference Proceedings (OSTI)

The possibility of using forecast errors originating from the finite-time dominant linear modes for the prediction of forecast skill for a primitive equation regional forecast model is studied. This is similar to the method for skill prediction ...

Tomislava Vuki?evi?

1993-06-01T23:59:59.000Z

163

Linear Stability Analysis of RungeKutta-Based Partial Time-Splitting Schemes for the Euler Equations  

Science Conference Proceedings (OSTI)

For atmospheric simulation models with resolutions from about 10 km to the subkilometer cloud-resolving scale, the complete nonhydrostatic compressible Euler equations are often used. An important integration technique for them is the time-...

Michael Baldauf

2010-12-01T23:59:59.000Z

164

Conservative Transport Schemes for Spherical Geodesic Grids: High-Order Flux Operators for ODE-Based Time Integration  

Science Conference Proceedings (OSTI)

Higher-order finite-volume flux operators for transport algorithms used within RungeKutta time integration schemes on irregular Voronoi (hexagonal) meshes are proposed and tested. These operators are generalizations of third- and fourth-order ...

William C. Skamarock; Almut Gassmann

2011-09-01T23:59:59.000Z

165

Experiences from near-real-time satellite-based volcano monitoring in Central America: case studies at Fuego, Guatemala  

Science Conference Proceedings (OSTI)

Over the past decade, remote sensing has been used increasingly in the study of active volcanoes and their associated hazards. Ground-based remote sensing techniques, such as those aimed at the analysis of volcanic gases or fumarole temperatures, are ...

P. W. Webley; M. J. Wooster; W. Strauch; J. A. Saballos; K. Dill; P. Stephenson; J. Stephenson; R. Escobar Wolf; O. Matias

2008-11-01T23:59:59.000Z

166

Limits on the Time Variation of the Fermi Constant G_F Based on Type Ia Supernova Observations  

E-Print Network (OSTI)

The light curve of a type Ia supernova decays at a rate set by the beta-decay lifetimes of the Ni-56 and Co-56 produced in the explosion. This makes such a light curve sensitive to the value of the Fermi constant G_F at the time of the supernova. Using data from the CfA Supernova Archive, we measure the dependence of the light curve decay rate on redshift and place a bound on the time variation of G_F of |(dG_F/dt)/G_F| < 10^(-9) / y.

Ferrero, Alejandro

2010-01-01T23:59:59.000Z

167

Accelerated Publication: Ag nanoparticle-based inkjet printed planar transmission lines for RF and microwave applications: Considerations on ink composition, nanoparticle size distribution and sintering time  

Science Conference Proceedings (OSTI)

Sintering of Ag nanoparticle (NP)-based inkjet printed tracks is a crucial process for the next-generation digitally printed electronics. In particular, while the digital printing, as additive technology, is now well settled for what concerns either ... Keywords: Inkjet printing, Microwave planar transmission lines, Real-time measurements, Silver nanoparticles

A. Chiolerio; M. Cotto; P. Pandolfi; P. Martino; V. Camarchia; M. Pirola; G. Ghione

2012-09-01T23:59:59.000Z

168

A comparison of diagnostic techniques for detecting salmonella spp in equine fecal samples using culture methods, gel-based pcr, and real-time pcr assays  

E-Print Network (OSTI)

Salmonellae are enteric bacteria infecting animals and humans. Large animal clinics and Veterinary Teaching Hospitals are greatly affected by Salmonella outbreaks and nosocomial infection. The risk of environmental contamination and spread of infection is increased when animals are confined in close contact with each other and subjected to increased stress factors. This study was designed to compare double-enrichment culture techniques with Gel-based and Real-time PCR assays in the quest for improved diagnostic methods for detecting Salmonella in equine fecal samples. 120 fecal samples submitted to the Clinical Microbiology Laboratory of the Veterinary Medical Teaching Hospital at Texas A&M University (CML, VMTH, TAMU) were tested for Salmonella using all three techniques. Double-enrichment bacterial culture detected 29 positive results (24%), Real-time PCR detected 33 positive results (27.5%), and Gel-based PCR detected 73 positives results (60.8%). While culture and real-time PCR methods had similar results, the gel-based PCR method detected many more positive results, indicating probable amplicon contamination. Real-time PCR can be completed as soon as the day after submission while culture techniques may take 2 to 5 days to complete. However, viable bacterial cells are needed for antimicrobial susceptibility testing and serotyping: both important for epidemiological studies. Therefore, double-enrichment bacterial culture performed concurrently with real-time PCR methods could be efficient in clinical settings where both accurate and expedient results are required.

Smith, Shelle Ann

2003-05-01T23:59:59.000Z

169

FEASIBILITY STUDY OF THE POTENTIAL USE OF CHEMISTRY BASED EMISSION PREDICTIONS FOR REAL-TIME CONTROL OF MODERN DIESEL ENGINES.  

E-Print Network (OSTI)

. Adding the model to the overall engine and aftertreatment control and diagnostics strategy. "NOx prediction in diesel engines for aftertreatment control," ASME 2003-41196. [5] Aithal SM. 2008-TIME CONTROL OF MODERN DIESEL ENGINES. S. M. Aithal Mathematics and Computer Science Division Argonne National

170

Ultra-Wideband Time-of-Arrival and Angle-of-Arrival Estimation Using a Signal Model Based on Measurements  

Science Conference Proceedings (OSTI)

This paper presents an ultra wideband (UWB) channel sounding scheme with a technique for estimating time of arrival (TOA) and angle of arrival (AOA) using measurement signals. Since the power spectrum over the UWB bandwidth can be measured in advance, ... Keywords: Cramr-Rao bound, multiple signal classification, radio channel measurement and estimation, ultra-wideband propagation

Naohiko Iwakiri; Takehiko Kobayashi

2007-11-01T23:59:59.000Z

171

Feedback-Based Energy Management in a Standby-Sparing Scheme for Hard Real-Time Systems  

Science Conference Proceedings (OSTI)

The interaction between fault tolerance and energy consumption is an interesting avenue in the realm of designing embedded systems. In this paper, a scheme for reducing energy consumption in conventional standby-sparing systems is introduced. In the ... Keywords: Energy management, Fault-tolerance, Hard real-time system, Feedback control

Mohammad Khavari Tavana; Mohammad Salehi; Alireza Ejlali

2011-11-01T23:59:59.000Z

172

Time-resolved coherent anti-Stokes Raman scattering microscopy: Imaging based on Raman free induction decay  

E-Print Network (OSTI)

. The T-CARS experiment involves three incident electric fields, Em(r,t), with frequencies at m m P1,P2; accepted for publication 10 January 2002 A time-resolved coherent anti-Stokes Raman scattering CARS and the solvent, and thus increasing the detection sensitivity of CARS microscopy significantly. © 2002 American

Xie, Xiaoliang Sunney

173

Just-in-Time Learning Theory-Based Study on the Dynamic Model of Fuel Cell Engine System  

Science Conference Proceedings (OSTI)

Fuel cell car is characterized by zero pollution, high efficiency, low noise and the like. For component selection and control strategy development of fuel cell car, computer simulation is the most common method being adopted. In this paper, the acquisition ... Keywords: fuel cell, CAN, USB, just-in-time learning, system identification

Su Chuqi; Lin Xiang

2009-10-01T23:59:59.000Z

174

Neutrino mass sensitivity by MAC-E-Filter based time-of-flight spectroscopy with the example of KATRIN  

E-Print Network (OSTI)

The KATRIN experiment aims at a measurement of the neutrino mass with a 90 % C.L. sensitivity of 0.2 eV/c$^2$ by measuring the endpoint region of the tritium $\\beta$ decay spectrum from a windowless gaseous molecular tritium source using an integrating spectrometer of the MAC-E-Filter type. We discuss the idea of using the MAC-E-Filter in a time-of-flight mode (MAC-E-TOF) in which the neutrino mass is determined by a measurement of the electron time-of-flight (TOF) spectrum that depends on the neutrino mass. MAC-E-TOF spectroscopy here is a very sensitive method since the $\\beta$-electrons are slowed down to distinguishable velocities by the MAC-E-Filter. Their velocity depends strongly on their surplus energy above the electric retarding potential. Using MAC-E-TOF, a statistical sensitivity gain is expected. Because a small number of retarding-potential settings is sufficient for a complete measurement, in contrast to about 40 different retarding potentials used in the standard MAC-E-Filter mode, there is a gain in measurement time and hence statistical power. The improvement of the statistical uncertainty of the squared neutrino mass has been determined by Monte Carlo simulation to be a factor 5 for an ideal case neglecting background and timing uncertainty. Additionally, two scenarios to determine the time-of-flight of the $\\beta$-electrons are discussed, which use the KATRIN detector for creating the stop signal and different methods for obtaining a start signal. These comprise the hypothetical case of an `electron tagger' which detects passing electrons with minimal interference and the more realistic case of `gated filtering', where the electron flux is periodically cut off by pulsing the pre-spectrometer potential.

Nicholas Steinbrink; Volker Hannen; Eric L. Martin; R. G. Hamish Robertson; Michael Zacher; Christian Weinheimer

2013-08-02T23:59:59.000Z

175

Neutrino mass sensitivity by MAC-E-Filter based time-of-flight spectroscopy with the example of KATRIN  

E-Print Network (OSTI)

The KArlsruhe TRItium Neutrino (KATRIN) experiment aims at a measurement of the neutrino mass with a 90 % confidence limit (C.L.) sensitivity of 0.2 eV/c$^2$ by measuring the endpoint region of the tritium $\\beta$ decay spectrum from a windowless gaseous molecular tritium source using an integrating spectrometer of the MAC-E-Filter type. We discuss the idea of using the MAC-E-Filter in a time-of-flight mode (MAC-E-TOF) in which the neutrino mass is determined by a measurement of the electron time-of-flight (TOF) spectrum that depends on the neutrino mass. MAC-E-TOF spectroscopy here is a very sensitive method since the $\\beta$-electrons are slowed down to distinguishable velocities by the MAC-E-Filter. Their velocity depends strongly on their surplus energy above the electric retarding potential. Using MAC-E-TOF, a statistical sensitivity gain is expected. Because a small number of retarding-potential settings is sufficient for a complete measurement, in contrast to about 40 different retarding potentials used in the standard MAC-E-Filter mode, there is a gain in measurement time and hence statistical power. The improvement of the statistical uncertainty of the squared neutrino mass has been determined by Monte Carlo simulation to be a factor 5 for an ideal case neglecting background and timing uncertainty. Additionally, two scenarios to determine the time-of-flight of the $\\beta$-electrons are discussed, which use the KATRIN detector for creating the stop signal and different methods for obtaining a start signal. These comprise the hypothetical case of an `electron tagger' which detects passing electrons with minimal interference and the more realistic case of `gated filtering', where the electron flux is periodically cut off by pulsing the pre-spectrometer potential.

Nicholas Steinbrink; Volker Hannen; Eric L. Martin; R. G. Hamish Robertson; Michael Zacher; Christian Weinheimer

2013-08-02T23:59:59.000Z

176

Small lesions evaluation based on unsupervised cluster analysis of signal-intensity time courses in dynamic breast MRI  

Science Conference Proceedings (OSTI)

An application of an unsupervised neural network-based computer-aided diagnosis (CAD) system is reported for the detection and characterization of small indeterminate breast lesions, average size 1.1 mm, in dynamic contrast-enhanced MRI. This system ...

A. Meyer-Baese; T. Schlossbauer; O. Lange; A. Wismueller

2009-01-01T23:59:59.000Z

177

A Motion Control Algorithm for a Continuous Mining Machine Based on a Hierarchical Real-Time Control System Design  

E-Print Network (OSTI)

of underground coal mining. The development of control architectures for the control of the movement involved in the support of the United States Bureau of Mines' computer-assisted underground coal mining procedure for a hierarchical computer-assisted coal mining control system. Based on this previous work

178

A Motion Control Algorithm for a Continuous Mining Machine Based on a Hierarchical RealTime Control System Design  

E-Print Network (OSTI)

of underground coal mining. The development of control architectures for the control of the movement involved in the support of the United States Bureau of Mines' computer­assisted underground coal mining procedure for a hierarchical computer­assisted coal mining control system. Based on this previous work

179

Atmospheric Soundings in Near-Real Time from Combined Satellite and Ground-Based Remotely Sensed Data  

Science Conference Proceedings (OSTI)

A mobile profiling system has been developed that is capable of probing the atmosphere from the surface to over 30 km. The Mobile Profiling System (MPS) combines ground-based instruments, including a five-beam 924-MHz radar wind profiler, a radio ...

James Cogan; Edward Measure; Daniel Wolfe

1997-10-01T23:59:59.000Z

180

Robustness of Ethernet-Based Real-Time Networked Control System with Multi-Level Client/Server Architecture  

E-Print Network (OSTI)

The importance of real-time communication at the device level in a factory automation setup is a widely researched area. This research is an effort to experimentally verify if Ethernet can be used as a real-time communication standard in a factory automation setup, by observing the effects of packet delays, packet loss, and network congestion on the performance of a networked control system (NCS). The NCS experimental setup used in this research involves real-time feedback control of multiple plants like DC motors and a magnetic-levitation system connected to one or more controllers. A multi-client-multi-server architecture on a local area network (LAN) was developed using user datagram protocol (UDP) as the communication protocol. Key observations are as follows. (1) The multi-client-single-server system showed the highest packet delays compared to single-client-single-server architecture. (2) In the singleclient- single-server system, as the Ethernet link utilization increased beyond 82 percent, the average packet delays and steady-state error of the DC motor speed-control system increased by 2231 percent and 304 percent, respectively. (3) Even under high link utilization, adding an additional server to the NCS reduced average packet delays considerably. (4) With large packet sizes, higher packet rates were automatically throttled by Ethernets flow control mechanism affecting the real-time communication negatively. (5) In the multiclient- multi-server architecture, average packet delays at higher packet rates, and at higher packet lengths were found to be 40 percent lesser than the those of the single-clientsingle- server system and 87.5 percent lesser than those of the multi-client-single-server system.

Bibinagar, Naveen Kumar

2010-08-01T23:59:59.000Z

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181

Testing of an Emitter Turn-Off-Based Static Synchronous Compensator (STATCOM) Controller with Real-Time Digital Simulation  

Science Conference Proceedings (OSTI)

In this report, the testing of a controller for a 10-MVAR emitter turn-off (ETO) static VAR compensator (STATCOM) through hardware-in-the-loop simulation is described. As the STATCOM was initially intended to be placed near a 50-MW wind farm within the Bonneville Power Administration (BPA) system, the wind farm, STATCOM, and relevant portions of the utility system were modeled for a real-time simulator at the Center for Advanced Power Systems (CAPS) at Florida State University. Data for validation of the...

2010-01-20T23:59:59.000Z

182

? Capacity-based design [Preliminary for Part 2] 2. Energy Harvesting Networks Transmission Completion Time Minimization for single link  

E-Print Network (OSTI)

Transmission Completion Time Minimization for single link w / finite battery Extension to fading channels Transmission policies with inefficient energy storage IEEE ICC 2013, Budapest, Hungary 6/9/2013 Goals ? Energy Efficiency (EE): What it meant last decade; what it means today ? From a communication network design perspective what should we care about for energy efficient design of cellular/conventional wireless networks? (greenish) rechargeable/energy harvesting networks? (green) ? Communication with energy harvesting nodes Green, self-sufficient nodes with extended network lifetime Relatively new field with increasing interest IEEE ICC 2013, Budapest, Hungary 6/9/2013 Prerequisites for the Tutorial

Aylin Yener; Short Term; Throughput Maximization

2013-01-01T23:59:59.000Z

183

RARX algorithm based model development and application to real-time data for On-line fault detection  

E-Print Network (OSTI)

Assimilation of cost-effective Fault Detection and Diagnosis (FDD) technique in building management system can save enormous amount of energy and material. In this paper, Recursive Autoregressive Exogenous Algorithm is used to develop dynamic FDD model for variable air volume air handling units. A methodology, based upon frequency response of the model is evolved for automatic fault detection and diagnosis. Results are validated with data obtained from a real building after introducing artificial faults. It is concluded that the method is quite robust and can detect and diagnose several types of faults

Harunori Yoshida; Sanjay Kumar

1999-01-01T23:59:59.000Z

184

Multi-mutational model for cancer based on age-time patterns of radiation effects: 2. Biological aspects  

SciTech Connect

Biological properties of relevance when modeling cancers induced in the atom bomb survivors include the wide distribution of the induced cancers across all organs, their biological indistinguishability from background cancers, their rates being proportional to background cancer rates, their rates steadily increasing over at least 50 years as the survivors age, and their radiation dose response being linear. We have successfully described this array of properties with a modified Armitage-Doll model using 5 to 6 somatic mutations, no intermediate growth, and the dose-related replacement of any one of these time-driven mutations by a radiation-induced mutation. Such a model is contrasted to prevailing models that use fewer mutations combined with intervening growth. While the rationale and effectiveness of our model is compelling for carcinogenesis in the atom bomb survivors, the lack of a promotional component may limit the generality of the model for other types of human carcinogenesis.

Mendelsohn, M.L.; Pierce, P.A.

1997-09-04T23:59:59.000Z

185

Growth Kinetics of Lipid-Based Nanodiscs to Unilamellar Vesicles: A Time-Resolved Small Angle Neutron Scattering (SANS) Study  

Science Conference Proceedings (OSTI)

Mixtures of dimyristoyl-phosphatidylcholine (DMPC), dimyristoyl-phosphatidylglycerol (DMPG) and dihexanoylphosphatidylcholine (DHPC) in aqueous solutions spontaneously form monodisperse, bilayered nanodiscs (also known as bicelles ) at or below the melting transition temperature of DMPC (TM ~23 C). In dilute systems above the main transition temperature TM of DMPC, bicelles coalesce (increasing their diameter) and eventually self-fold into unilamellar vesicles (ULVs). Time resolved small angle neutron scattering was used to study the growth kinetics of nanodiscs below and equal to TM over a period of hours as a function of temperature at two lipid concentrations in presence or absence of NaCl salt. Bicelles seem to undergo a sudden initial growth phase with increased temperature, which is then followed by a slower reaction-limited growth phase that depends on ionic strength, lipid concentration and temperature. The bicelle interaction energy was derived from the colloidal theory of Derjaguin and Landau, and Verwey and Overbeek (DLVO). While the calculated total energy between discs is attractive and proportional to their growth rate, a more detailed mechanism is proposed to describe the mechanism of disc coalescence. After annealing at low temperature (low-T), samples were heated to 50 C in order to promote the formation of ULVs. Although the low-T annealing of samples has only a marginal effect on the mean size of end-state ULVs, it does affect their polydispersity, which increases with increased T, presumably driven by the entropy of the system.

Mahabir, Suanne [University of Western Ontario, The; Small, Darcy [University of Western Ontario, The; Li, Ming [University of Connecticut, Storrs; Wan, Wankei [University of Western Ontario, The; Kucerka, Norbert [Canadian Neutron Beam Centre and Comelius University (Slovakia); Littrell, Ken [ORNL; Katsaras, John [ORNL; Nieh, Mu-Ping [University of Connecticut, Storrs

2013-01-01T23:59:59.000Z

186

Analysis based on the Wavelet & Hilbert Transforms applied to the full time series of interbeats for a triad of failures at the heart  

E-Print Network (OSTI)

A tetra of sets which elements are time series including interbeats has been obtained from the databank Physionet-MIT-BIH, corresponding to the following failures at the heart of humans: Obstructive Sleep Apnea, Congestive Heart Failure, and Atrial Fibrillation, and has been analyzed statistically using an already known technique based on the Wavelet and Hilbert Transforms. That technique has been applied to the time series of interbeats for 87 patients in order to find the intrinsical dynamics of their hearts. The length of the times series varies approachly from 7 to 24 h. The kind of wavelet selected for the study has been any one belonging to the families: Daubechies, Biortoghonal, and Gaussian. The analysis has been done for the complet set of scales ranging from: 1-128 heartbeats. Choosing the Biorthogonal wavelet: bior3.1, it is observed: (a) That a time serie has not to be cutted in shorter periods with the purpose of obtaining the collapse of the data, (b) An analytical, universal behavior of the dat...

Ritto, P A

2007-01-01T23:59:59.000Z

187

Real-Time Observation of Platinum Redispersion on Ceria-Based Oxide by In-situ Turbo-XAS in Fluorescence Mode  

Science Conference Proceedings (OSTI)

A real-time observation of the redispersion behavior of sintered Pt on ceria-based oxide was made possible by in-situ time-resolved Turbo-XAS in fluorescence mode. 2 wt% Pt/Ce-Zr-Y mixed oxide samples were prepared, and then treated under an aging condition. The average Pt particle size measured by CO absorption method after aging was 7 nm. Redispersion treatments of the previously aged catalyst were carried out at 600 deg. C within an in-situ XAS cell in a cyclical flow of reducing/oxidizing gases. Pt L3-edge XANES spectra were collected every 1.1 second under in-situ conditions. From a change in the XANES spectra, we observed that the Pt particle size of the aged catalyst decreased from 7 to 5 nm after 60 seconds and then to 3 nm after 1000 seconds.

Nagai, Yasutaka; Dohmae, Kazuhiko; Tanabe, Toshitaka; Shinjoh, Hirofumi [TOYOTA Central R and D Labs., Inc., Nagakute, Aichi, 480-1192 (Japan); Takagi, Nobuyuki [TOYOTA Motor Corporation Higashi-fuji Technical Center, Shizuoka, 410-1193 (Japan); Ikeda, Yasuo [TOYOTA Motor Europe Technical Centre, Zaventem, B-1930 (Belgium); Guilera, Gemma; Pascarelli, Sakura; Newton, Mark [European Synchrotron Radiation Facility, Grenoble, F-38043 (France); Matsumoto, Shin'ichi [TOYOTA Motor Corporation, Toyota, Aichi, 471-8572 (Japan)

2007-02-02T23:59:59.000Z

188

First Evaluation of the CPU, GPGPU and MIC Architectures for Real Time Particle Tracking based on Hough Transform at the LHC  

E-Print Network (OSTI)

Recent innovations focused around {\\em parallel} processing, either through systems containing multiple processors or processors containing multiple cores, hold great promise for enhancing the performance of the trigger at the LHC and extending its physics program. The flexibility of the CMS/ATLAS trigger system allows for easy integration of computational accelerators, such as NVIDIA's Tesla Graphics Processing Unit (GPU) or Intel's \\xphi, in the High Level Trigger. These accelerators have the potential to provide faster or more energy efficient event selection, thus opening up possibilities for new complex triggers that were not previously feasible. At the same time, it is crucial to explore the performance limits achievable on the latest generation multicore CPUs with the use of the best software optimization methods. In this article, a new tracking algorithm based on the Hough transform will be evaluated for the first time on a multi-core Intel Xeon E5-2697v2 CPU, an NVIDIA Tesla K20c GPU, and an Intel \\xphi\\ 7120 coprocessor. Preliminary time performance will be presented.

V. Halyo; P. LeGresley; P. Lujan; V. Karpusenko; A. Vladimirov

2013-10-28T23:59:59.000Z

189

Der Alte und der Neue Sden Axel Borsdorf DER ALTE UND DER NEUE SDEN.  

E-Print Network (OSTI)

solarthermische Kraftwerke dabei sogar doppelt soviel Energie bereitstellen. 5 Die Investition in Spanien 3 Die Investition in Spanien Auszeichnung der Andasol-Kraftwerke mit dem Energy Globe Award im. Solarfeldverrohrung Die Investition in Spanien #12;16 Die ersten Parabolrinnen-Kraftwerke Europas ­ die grössten

Borsdorf, Axel

190

Air pollution: Coal based power plants major culprit : HindustanTimes.com http://www.hindustantimes.com/news/5922_1646830,001500250000000... 1 of 2 3/10/2006 7:45 AM  

E-Print Network (OSTI)

Air pollution: Coal based power plants major culprit : HindustanTimes.com http 1 Front » Story Air pollution: Coal based power plants major culprit HT Correspondent Kanpur, March that coal based thermal power plants are the main source for air pollution. The fact came to the fore during

Singh, Ramesh P.

191

A density functional theory and time-dependent density functional theory investigation on the anchor comparison of triarylamine-based dyes  

SciTech Connect

To understand the effects of the anchor part in organic dyes on the energy conversion efficiency of dye-sensitized solar cells (DSCs), two different anchor groups used in metal-free triphenylamine (TPA)-based organic dyes for DSCs have been theoretically compared. Density functional theory (DFT) and time-dependent DFT (TDDFT) study of geometry properties, excitations, and electronic structures of triarylamine-based dyes (TC1 and TPAR1) before and after binding to titanium has been performed under the level of TD-PBE1PBE/6-311G(d,p)//B3LYP/6-311G(d,p). The result shows that cyanoacrylic acid anchor favors better photoelectrochemical properties of DSCs than that of rhodanine-3-acetic acid anchor via providing more shift of TiO{sub 2} conduction band toward the vacuum energy levels (larger open circuit potentials) and more favorable conjugation with titanium. This study is expected to shed light on the design of metal-free organic dyes for DSCs.

Peng Bo; Yang Siqi; Li Lanlan; Cheng Fangyi; Chen Jun [Institute of New Energy Material Chemistry and Key Laboratory of Energy-Material Chemistry, Chemistry College, Nankai University, Tianjin 300071 (China)

2010-01-21T23:59:59.000Z

192

Space-Time Insight | Open Energy Information  

Open Energy Info (EERE)

Space-Time Insight Space-Time Insight Jump to: navigation, search Name Space-Time Insight Address 45680 Northport Loop East Place Fremont, California Zip 94538 Sector Efficiency Product SpaceTime Awareness Server Year founded 2008 Number of employees 11-50 Website http://www.spacetimeinsight.co Coordinates 37.4923832°, -121.9532879° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.4923832,"lon":-121.9532879,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

193

Managing time  

Science Conference Proceedings (OSTI)

Professionals overwhelmed with information glut can find hope from new insights about time management.

Peter J. Denning

2011-03-01T23:59:59.000Z

194

Timed Property Sequence Chart  

Science Conference Proceedings (OSTI)

Property Sequence Chart (PSC) is a novel scenario-based notation, which has been recently proposed to represent temporal properties of concurrent systems. This language balances expressive power and simplicity of use. However, the current version of ... Keywords: Property Sequence Chart, Real-time specification patterns, Timed Property Sequence Chart, Timing properties

Pengcheng Zhang; Bixin Li; Lars Grunske

2010-03-01T23:59:59.000Z

195

A neural network for real-time retrievals of PWV and LWP from Arctic millimeter-wave ground-based observations.  

SciTech Connect

This paper presents a new neural network (NN) algorithm for real-time retrievals of low amounts of precipitable water vapor (PWV) and integrated liquid water from millimeter-wave ground-based observations. Measurements are collected by the 183.3-GHz G-band vapor radiometer (GVR) operating at the Atmospheric Radiation Measurement (ARM) Program Climate Research Facility, Barrow, AK. The NN provides the means to explore the nonlinear regime of the measurements and investigate the physical boundaries of the operability of the instrument. A methodology to compute individual error bars associated with the NN output is developed, and a detailed error analysis of the network output is provided. Through the error analysis, it is possible to isolate several components contributing to the overall retrieval errors and to analyze the dependence of the errors on the inputs. The network outputs and associated errors are then compared with results from a physical retrieval and with the ARM two-channel microwave radiometer (MWR) statistical retrieval. When the NN is trained with a seasonal training data set, the retrievals of water vapor yield results that are comparable to those obtained from a traditional physical retrieval, with a retrieval error percentage of {approx}5% when the PWV is between 2 and 10 mm, but with the advantages that the NN algorithm does not require vertical profiles of temperature and humidity as input and is significantly faster computationally. Liquid water path (LWP) retrievals from the NN have a significantly improved clear-sky bias (mean of {approx}2.4 g/m{sup 2}) and a retrieval error varying from 1 to about 10 g/m{sup 2} when the PWV amount is between 1 and 10 mm. As an independent validation of the LWP retrieval, the longwave downwelling surface flux was computed and compared with observations. The comparison shows a significant improvement with respect to the MWR statistical retrievals, particularly for LWP amounts of less than 60 g/m{sup 2}.

Cadeddu, M. P.; Turner, D. D.; Liljegren, J. C.; Decision and Information Sciences; Univ. of Wisconsin at Madison

2009-07-01T23:59:59.000Z

196

Entropic Time  

Science Conference Proceedings (OSTI)

The formulation of quantum mechanics within the framework of entropic dynamics includes several new elements. In this paper we concentrate on one of them: the implications for the theory of time. Entropic time is introduced as a book-keeping device to keep track of the accumulation of changes. One new feature is that, unlike other concepts of time appearing in the so-called fundamental laws of physics, entropic time incorporates a natural distinction between past and future.

Caticha, Ariel [Department of Physics, University at Albany-SUNY, Albany, NY 12222 (United States)

2011-03-14T23:59:59.000Z

197

,"Energy","Water","Renewable","Petroleum","Alt. Fuel",,"On-Line Data Collection System",,"Report Period","Due In",,,"Primary","Secondary","Secondary"  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Energy","Water","Renewable","Petroleum","Alt. Fuel",,"On-Line Data Collection System",,"Report Period","Due In",,,"Primary","Secondary","Secondary" Energy","Water","Renewable","Petroleum","Alt. Fuel",,"On-Line Data Collection System",,"Report Period","Due In",,,"Primary","Secondary","Secondary" 2003,,,,,,,"EMS4","Environmental Management System","Fiscal Year (Oct 1 - Sept 30)","November 15",,"Fiscal Year",2009 2004,,,,,,,"FAST","Federal Automotive Statistical Tool","Fiscal Year (Oct 1 - Sept 30)","October 31",,"Department","Department of Energy" 2005,-2.775557562e-17,,,0,0,,"FIMS","Facilities Information Management System","Fiscal Year (Oct 1 - Sept 30)","November 15",,"Program","Office of Legacy Management"

198

Direct Measurement of Initial Enrichment, Burn-up and Cooling Time of Spent Fuel Assembly with a Differential Die-Away Technique Based Instrument  

SciTech Connect

An outline of this presentation of what a Differential Die-Away (DDA) instrument can do are: (1) Principle of operation of DDA instrument; (2) Determination of initial enrichment (IE) ({sigma} < 5%); (3) Determination of burn up (BU) ({sigma} {approx} 6%); (4) Determination of cooling time (CT) ({sigma} {approx} 20-50%); and (5) DDA instrument as a standalone device. DDA response (fresh fuel vs. spent fuel) is: (1) Fresh fuel => DDA response increases (die-away time is longer) with increasing fissile content; and (2) Spent fuel => DDA response decreases (die-away time is shorter) with higher burn-up (i.e. more neutron absorbers present).

Henzl, Vladimir [Los Alamos National Laboratory; Swinhoe, Martyn T. [Los Alamos National Laboratory; Tobin, Stephen J. [Los Alamos National Laboratory

2012-07-13T23:59:59.000Z

199

Grid-based methods for diatomic quantum scattering problems II: Time-dependent treatment of single- and two-photon ionization of H2+  

SciTech Connect

The time-dependent Schr\\"odinger equation for H2+ in a time-varying electromagnetic field is solved in the fixed-nuclei approximation using a previously developed finite-element/ discrete variable representation in prolate spheroidal coordinates. Amplitudes for single- and two-photon ionization are obtained using the method of exterior complex scaling to effectively propagate the field-free solutions from the end of the radiation pulse to infinite times. Cross sections are presented for one-and two-photon ionization for both parallel and perpendicular polarization of the photon field, as well as photoelectron angular distributions for two-photon ionization.

Rescigno, Thomas N.; Tao, L.; McCurdy, C.W.

2009-04-20T23:59:59.000Z

200

TIMING APPARATUS  

DOE Patents (OSTI)

The timing device comprises an escapement wheel and pallet, a spring drive to rotate the escapement wheel to a zero position, means to wind the pretensioned spring proportional to the desired signal time, and a cam mechanism to control an electrical signal switch by energizing the switch when the spring has been wound to the desired position, and deenergizing it when it reaches the zero position. This device produces an accurately timed signal variably witain the control of the operator.

Bennett, A.E.; Geisow, J.C.H.

1956-04-17T23:59:59.000Z

Note: This page contains sample records for the topic "alt base time" 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

Development of a Time SeriesBased Methodology for Estimation of Large-Area Soil Wetness over India Using IRS-P4 Microwave Radiometer Data  

Science Conference Proceedings (OSTI)

Soil moisture is a very important boundary parameter in numerical weather prediction at different spatial and temporal scales. Satellite-based microwave radiometric observations are considered to be the best because of their high sensitivity to ...

P. K. Thapliyal; P. K. Pal; M. S. Narayanan; J. Srinivasan

2005-01-01T23:59:59.000Z

202

Time, Wavelet and Hilbert-Huang Domain Analysis of Signals from Ultrasonic Based Equipment for the Non Destructive Evaluation of Concrete and Brick Masonry Walls  

Science Conference Proceedings (OSTI)

In this paper we compare the effectiveness of the time, wavelet and Hilbert-Huang domain analysis of waveforms from a Non Destructive Test (NDT) equipment. The analysis of the signals from NDT systems is one of the most important activities in the recognition ... Keywords: Hilbert-Huang transform, Magnetostrictive transducers and sensors, Non Destructive Test, Ultrasonic waves, Wavelet transform

Antonino Musolino; Marco Raugi; Mauro Tucci; Florin Turcu

2008-06-01T23:59:59.000Z

203

A Multi-objective Genetic Algorithm for On-chip Real-time Adaptation of a Multi-Carrier based Telecommunications Receiver  

E-Print Network (OSTI)

power estimation method based on an original functional analysis; the power consumption of a whole increasing. One of the major problem due to this increase is the system power consumption. Indeed, the power that the power consumption due to external memory access is more and more important in latest applications [1

Arslan, Tughrul

204

Stable a-Si:H-Based Multijunction Solar Cells with Guidance from Real-Time Optics: Final Report, 17 July 1998--16 November 2001  

DOE Green Energy (OSTI)

This report describes the new insights obtained into the growth of hydrogenated silicon (Si:H) films via real-time spectroscopic ellipsometry (RTSE) measurements. Evolutionary phase diagrams were expanded to include the effects of different deposition conditions, including rf power, pressure, and temperature. Detailed studies of degradation kinetics in thin films and corresponding solar cells have been carried out. Both p-i-n and n-i-p solar cells that incorporate Si:H i-layers deposited with and without H2-dilution have been studied. For the first time, direct and reliable correlations have been obtained between the light-induced changes in thin-film materials and the degradation of the corresponding solar cells.

Wronski, C. R.; Collins, R. W.; Pearce, J. M.; Koval, R. J.; Ferlauto, A. S.; Ferreira, G. M.; Chen C.

2002-08-01T23:59:59.000Z

205

Beyond long memory in heart rate variability: An approach based on fractionally integrated autoregressive moving average time series models with conditional heteroscedasticity  

Science Conference Proceedings (OSTI)

Heart Rate Variability (HRV) series exhibit long memory and time-varying conditional variance. This work considers the Fractionally Integrated AutoRegressive Moving Average (ARFIMA) models with Generalized AutoRegressive Conditional Heteroscedastic (GARCH) errors. ARFIMA-GARCH models may be used to capture and remove long memory and estimate the conditional volatility in 24 h HRV recordings. The ARFIMA-GARCH approach is applied to fifteen long term HRV series available at Physionet

2013-01-01T23:59:59.000Z

206

Optical-Fiber-Based, Time-Resolved Photoluminescence Spectrometer for Thin-Film Absorber Characterization and Analysis of TRPL Data for CdS/CdTe Interface: Preprint  

DOE Green Energy (OSTI)

We describe the design of a time resolved photoluminescence (TRPL) spectrometer for rapid semiconductor absorber characterization. Simplicity and flexibility is achieved by using single optical fiber to deliver laser pulses and to collect photoluminescence. We apply TRPL for characterization of CdS/CdTe absorbers after deposition, CdCl2 treatment, Cu doping, and back contact formation. Data suggest this method could be applied in various stages of PV device processing. Finally, we show how to analyze TRPL data for CdS/CdTe absorbers by considering laser light absorption depth and intermixing at CdS/CdTe interface.

Kuciauskas, D.; Duenow, J. N.; Kanevce, A.; Li, J. V.; Young, M. R.; Dippo, P.; Levi, D. H.

2012-06-01T23:59:59.000Z

207

Digestion time  

NLE Websites -- All DOE Office Websites (Extended Search)

Digestion time Digestion time Name: Don Mancosh Location: N/A Country: N/A Date: N/A Question: I have always given the rule of thumb in class that material we eat is with us for about 24 hours before exiting the body. The question arises about the time value of liquids. Getting a big coke prior to a 3 hour drive generally means that there will be a stop along the way. Is there a generalization made about liquids in the body similar to the one for solid food? Replies: A physician would give a better answer, but I hazard this: the only liquids which people consume (deliberately) in significant quantities are water, ethyl alcohol and various oils. Water and alcohol are absorbed on a time scale of seconds to minutes through the mouth, stomach and digestive tract. The oils are huge molecules, so I'd guess like any other greasy food they get absorbed in the upper digestive tract. Some of them, perhaps the longest and most nonpolar, are not absorbed at all --- cf. the old-time remedy of mineral oil for constipation --- so there should be some average time-before-what's-left-is-excreted such as you're looking for, and my (wild) guess is that it would not differ substantially from that for food. You can define an average lifetime in the body for alcohol, since the natural level is zero. Rough guidelines are widespread in the context of drunk driving laws. But this is not really possible for water. One's body is normally full up to the brim with water, and there's no way for the body to distinguish between water molecules recently absorbed and molecules that've been moping around since the Beatles split up. Thus the water entering the toilet bowl after the pit stop is not in general the same water as was in the big coke. If you were to consider for water just the average time between drinking and peeing, it would seem to depend strongly on how well hydrated the body was before the drink, and how much was drunk. During sustained heavy exertion in the sun and dry air one can easily drink a pint of water an hour without peeing at all. On the other hand, if one is willing to drink enough water fast enough, so as to establish a high excess of body water one can pee 8 ounces 15 minutes or less after drinking 8 ounces.

208

NIST: A Walk Through Time - World Time Scales  

Science Conference Proceedings (OSTI)

... A Walk Through Time - Home Page ... and technologists recognized the inadequacy of timekeeping based on the motion of the Earth, which fluctuates ...

2010-10-05T23:59:59.000Z

209

Statistical Evaluation of Travel Time Estimation Based on Data from Freeze-Branded Chinook Salmon on the Snake River, 1982-1990.  

DOE Green Energy (OSTI)

The purpose of this investigation is to assess the strengths and limitations of existing freeze brand recapture data in describing the migratory dynamics of juvenile salmonids in the mainstream, impounded sections of the Snake and Columbia Rivers. With the increased concern over the threatened status of spring and summer chinook salmon in the Snake River drainage, we used representative stocks for these races as our study populations. However, statistical considerations resultant from these analyses apply to other species and drainages as well. This report describes analyses we conducted using information derived from freeze-branded groups. We examined both index production groups released from hatcheries upstream from Lower Granite Dam (1982--1990) and freeze-branded groups used as controls in smolt transportation evaluations conducted by the National Marine Fisheries Service (1986, 1989). The scope of our analysis was limited to describing travel time estimates and derived relationships, as well as reach survival estimates through the mainstem Snake River from Lower Granite to McNary Dam.

Smith, Steven G.; Skalski, J.R.; Giorgi, Albert E.

1993-10-01T23:59:59.000Z

210

Time Brightness  

NLE Websites -- All DOE Office Websites (Extended Search)

Perlmutter, et al., in Thermonuclear Supernovae, NATO ASI, v. 486 (1997) Perlmutter, et al., in Thermonuclear Supernovae, NATO ASI, v. 486 (1997) Cosmology from . . . Time Brightness ... . . . 50-100 Fields Lunar Calendar Scheduled Follow-Up Imaging at Hubble, Cerro Tololo, WIYN, Isaac Newton Scheduled Follow-Up Spectroscopy at Keck Almost 1000 Galaxies per Field RESULT: ~24 Type Ia supernovae discovered while still brightening, at new moon Berkeley Lab Keck WIYN Cerro Tololo Isaac Newton Hubble Strategy We developed a strategy to guarantee a group of supernova discoveries on a certain date. Just after a new moon, we observe some 50 to 100 high-galactic lattitute fields-each containing almost a thousand high-redshift galaxies-in two nights on the Cerro Tololo 4-meter telescope with Tyson & Bernstein's wide-field camera. We return three weeks later to observe the same

211

Diorganosilacetylene-alt-diorganosilvinylene polymers and a process of preparation  

DOE Patents (OSTI)

The present invention provides linear organosilicon polymers including acetylene and vinylene moieties, and a process for their preparation. These diorganosilacetylenealt-diorganosilvinylene linear polymers can be represented by the formula: --[--(R.sup.1)(R.sup.2)Si--C.ident.C--(R.sup.3)(R.sup.4)Si--CH=CH--].sub.n --, wherein n.gtoreq.2; each R.sup.1, R.sup.2, R.sup.3, and R.sup.4 is independently selected from the group consisting of hydrogen, halogen, alkyl, alkenyl, aryl, and aralkyl radicals. The polymers are soluble in organic solvents, air stable, and can be pulled into fibers or cast into films. They can be thermally converted into silicon carbide ceramic materials.

Barton, Thomas J. (Ames, IA); Ijadi-Maghsoodi, Sina (Ames, IA); Pang, Yi (Ames, IA)

1993-08-31T23:59:59.000Z

212

User manual for Timed-CSP Simulator  

E-Print Network (OSTI)

Timed Csp Simulator is based on the presentation of Timed Csp in [4]. For a brief discussion of the tool architecture see [1, 2]. The semantical questions regarding simulating Timed Csp are discussed in [3].

Hoang Nga Nguyen; Markus Roggenbach

2012-01-01T23:59:59.000Z

213

Real time estimation of Bayesian networks  

Science Conference Proceedings (OSTI)

For real time evaluation of a Bayesian network when there is not sufficient time to obtain an exact solution, a guaranteed response time, approximate solution is required. It is shown that non traditional methods utilizing estimators based on an archive ...

Robert L. Welch

1996-08-01T23:59:59.000Z

214

A von Hamos x-ray spectrometer based on a segmented-type diffraction crystal for single-shot x-ray emission spectroscopy and time-resolved resonant inelastic x-ray scattering studies  

SciTech Connect

We report on the design and performance of a wavelength-dispersive type spectrometer based on the von Hamos geometry. The spectrometer is equipped with a segmented-type crystal for x-ray diffraction and provides an energy resolution in the order of 0.25 eV and 1 eV over an energy range of 8000 eV-9600 eV. The use of a segmented crystal results in a simple and straightforward crystal preparation that allows to preserve the spectrometer resolution and spectrometer efficiency. Application of the spectrometer for time-resolved resonant inelastic x-ray scattering and single-shot x-ray emission spectroscopy is demonstrated.

Szlachetko, J. [Paul Scherrer Institut, 5232 Villigen PSI (Switzerland); Institute of Physics, Jan Kochanowski University, 25-406 Kielce (Poland); Nachtegaal, M.; Boni, E. de; Willimann, M.; Safonova, O.; Sa, J.; Smolentsev, G.; Szlachetko, M.; Bergamaschi, A.; Schmitt, B.; David, C.; Luecke, A. [Paul Scherrer Institut, 5232 Villigen PSI (Switzerland); Bokhoven, J. A. van [Paul Scherrer Institut, 5232 Villigen PSI (Switzerland); Institute for Chemical and Bioengineering, ETH Zurich, 8093 Zuerich (Switzerland); Dousse, J.-Cl.; Hoszowska, J.; Kayser, Y. [Department of Physics, University of Fribourg, 1700 Fribourg (Switzerland); Jagodzinski, P. [University of Technology, Kielce (Poland)

2012-10-15T23:59:59.000Z

215

The LCLS Timing Event System  

Science Conference Proceedings (OSTI)

The Linac Coherent Light Source requires precision timing trigger signals for various accelerator diagnostics and controls at SLAC-NAL. A new timing system has been developed that meets these requirements. This system is based on COTS hardware with a mixture of custom-designed units. An added challenge has been the requirement that the LCLS Timing System must co-exist and 'know' about the existing SLC Timing System. This paper describes the architecture, construction and performance of the LCLS timing event system.

Dusatko, John; Allison, S.; Browne, M.; Krejcik, P.; /SLAC

2012-07-23T23:59:59.000Z

216

Time-Constrained Loop Pipelining  

Science Conference Proceedings (OSTI)

This paper addresses the problem of Time-Constrained Loop Pipelining, i.e. given a fixed throughput, finding a schedule of a loop which minimizes resource requirements. This paper proposes a methodology, called TCLP, based on dividing the problem into ... Keywords: loop pipelining, scheduling, timing and resource contraints, register optimization

Fermin Sanchez

1995-12-01T23:59:59.000Z

217

Time-Varying z-Transform for the Analysis of Discrete-Time Linear Time Periodic Systems  

Science Conference Proceedings (OSTI)

This article deals with a new representation of linear discrete-time periodic systems. This representation, based on the time-varying z-transform, turns out to be highly efficient in the field of automatic control, when an appropriate choice of ... Keywords: Nyquist criterion, final value theorem, initial value theorem, linear discrete-time periodic systems, time-varying z-transform, time-varying frequency response, time-varying systems

A. Garcia Iturricha; J. Sabatier; A. Oustaloup

2003-07-01T23:59:59.000Z

218

Electron beam-based sources of ultrashort x-ray pulses.  

Science Conference Proceedings (OSTI)

A review of various methods for generation of ultrashort x-ray pulses using relativistic electron beam from conventional accelerators is presented. Both spontaneous and coherent emission of electrons is considered. The importance of the time-resolved studies of matter at picosecond (ps), femtosecond (fs), and atttosecond (as) time scales using x-rays has been widely recognized including by award of a Nobel Prize in 1999 [Zewa]. Extensive reviews of scientific drivers can be found in [BES1, BES2, BES3, Lawr, Whit]. Several laser-based techniques have been used to generate ultrashort x-ray pulses including laser-driven plasmas [Murn, Alte, Risc, Rose, Zamp], high-order harmonic generation [Schn, Rund, Wang, Arpi], and laser-driven anode sources [Ande]. In addition, ultrafast streak-camera detectors have been applied at synchrotron sources to achieve temporal resolution on the picosecond time scale [Wulf, Lind1]. In this paper, we focus on a different group of techniques that are based on the use of the relativistic electron beam produced in conventional accelerators. In the first part we review several techniques that utilize spontaneous emission of electrons and show how solitary sub-ps x-ray pulses can be obtained at existing storage ring based synchrotron light sources and linacs. In the second part we consider coherent emission of electrons in the free-electron lasers (FELs) and review several techniques for a generation of solitary sub-fs x-ray pulses. Remarkably, the x-ray pulses that can be obtained with the FELs are not only significantly shorter than the ones considered in Part 1, but also carry more photons per pulse by many orders of magnitude.

Zholents, A.; Accelerator Systems Division (APS)

2010-09-30T23:59:59.000Z

219

Time and Frequency Portal  

Science Conference Proceedings (OSTI)

NIST Home > Time and Frequency Portal. Time and Frequency Portal. Programs and Projects. CODATA values of the fundamental constants ...

2013-06-27T23:59:59.000Z

220

Time Series and Forecasting  

Science Conference Proceedings (OSTI)

Time Series and Forecasting. Leigh, Stefan and Perlman, S. (1991). "An Index for Comovement of Time Sequences With ...

Note: This page contains sample records for the topic "alt base time" 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.


221

A misuse of time and energy .  

E-Print Network (OSTI)

??In this exegesis, A Misuse of Time and Energy, I set out a contextual framework for my practice-based sculptural project. I consider two flawed and (more)

Blackburn, Nikolas Alexander

2013-01-01T23:59:59.000Z

222

Beam Time Allocation Committee (BAC)  

NLE Websites -- All DOE Office Websites (Extended Search)

Time Allocation Committee (BAC) Time Allocation Committee (BAC) Charter Purpose: Allocates general user beam time by instrument to promote diverse and high- impact science and a broad-based user community to meet DOE and NSSD goals. Participants: BAC Chair (appointed by NSSD Director), Instrument Group Leaders, User Office Schedule: Tied to proposal calls - expected to meet at least 2 times/year with meetings scheduled about 6 weeks after the proposal call has closed and at least 1 month prior to scheduled operations. Process: 1. Instrument Group Leaders (with group members): a. Confirm feasibility (equipment requirements and instrument capabilities) and safe operations b. Review amount of beam time requested and adjust as needed with consideration for instrument and sample environment availability.

223

The TESLA Time Projection Chamber  

E-Print Network (OSTI)

A large Time Projection Chamber is proposed as part of the tracking system for a detector at the TESLA electron positron linear collider. Different ongoing R&D studies are reviewed, stressing progress made on a new type readout technique based on Micro-Pattern Gas Detectors.

Nabil Ghodbane

2002-12-12T23:59:59.000Z

224

Compiling for time predictability  

Science Conference Proceedings (OSTI)

Within the T-CREST project we work on hardware/software architectures and code-generation strategies for time-predictable embedded and cyber-physical systems. In this paper we present the single-path code generation approach that we plan to explore and ... Keywords: compilers, real-time systems, time predictability, worst-case execution-time analysis

Peter Puschner; Raimund Kirner; Benedikt Huber; Daniel Prokesch

2012-09-01T23:59:59.000Z

225

Certifying execution time  

Science Conference Proceedings (OSTI)

In this paper we present the framework Abstraction-Carrying CodE Platform for Timing validation (ACCEPT), designed for timing analysis of embedded real-time systems using the worst-case execution time (WCET) as the safety parameter. In the context ...

Vtor Rodrigues; Joo Pedro Pedroso; Mrio Florido; Simo Melo de Sousa

2011-05-01T23:59:59.000Z

226

Time-Constrained Loop Pipelining  

E-Print Network (OSTI)

This paper addresses the problem of Time-Constrained Loop Pipelining, i.e. given a fixed throughput, finding a schedule of a loop which minimizes resource requirements. We propose a methodology, called TCLP, based on dividing the problem into two simpler and independent tasks: retiming and scheduling. TCLP explores different sets of resources, searchingfor a maximum resource utilization. This reduces area requirements. After a minimum set of resourceshas been found, the execution throughput is increased and the number of registers required by the loop schedule is reduced. TCLP attempts to generate a schedule which minimizes cost in time and area (resources and registers). The results show that TCLP obtains optimal schedules in most cases. 1 Introduction This paper presents TCLP, a methodology to solve TimeConstrained Loop Pipelining. TCLP is NP-complete [3]. Two types of timing constraints (TCs) have been considered in the literature: local TCs to specify minimum and/or maximum TCs ...

Fermn Sanchez; Jordi Cortadella

1995-01-01T23:59:59.000Z

227

Exploration Cost and Time Metric | Open Energy Information  

Open Energy Info (EERE)

Exploration Cost and Time Metric Exploration Cost and Time Metric Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Exploration Cost and Time Metric Agency/Company /Organization: NREL Sector: Energy Focus Area: Geothermal Phase: Prepare a Plan Topics: Background analysis, Baseline projection, Resource assessment Resource Type: Application prototype, Online calculator User Interface: Website Website: openei.org/apps/xct_metric/ Country: United States Web Application Link: openei.org/apps/xct_metric/ Cost: Free OpenEI Keyword(s): Featured UN Region: Northern America Coordinates: 37.09024°, -95.712891° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.09024,"lon":-95.712891,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

228

Time-Resolved  

NLE Websites -- All DOE Office Websites (Extended Search)

Time-Resolved Time-Resolved Time-Resolved Print Of the four fundamental parameters that we use to perceive the physical world (energy, momentum, position, and time) three correspond to the three broad categories of synchrotron experimental measurement techniques: spectroscopy (energy), scattering (momentum), and imaging (position). The fourth parameter-time-can in principle be applied to all the techniques. At the ALS, many experiments can be carried out in real time, with data being recorded from the same sample as it changes over time. Some time-resolved experiments take advantage of the pulsed nature of the ALS's synchrotron radiation, which, like a strobe light, can capture a series of "snapshots" of a process that, when viewed sequentially, show us how a given process evolves over time. Other experiments simply require two pulses: one to "pump" energy into the sample system and a second to probe the system's excited state.

229

Managing time, part 2  

Science Conference Proceedings (OSTI)

Masterful time management means not just tracking of messages in your personal environment, but managing your coordination network with others.

Peter J. Denning; Ritu Raj

2011-09-01T23:59:59.000Z

230

FREQUENCY AND TIME  

Science Conference Proceedings (OSTI)

... STRATWARM observed and FLARES expected ... observed and PROTON FLARE expected (- - ) STRATWARM ... time of observed solar or geophysical ...

2003-01-30T23:59:59.000Z

231

QuickTime VR  

Science Conference Proceedings (OSTI)

QuickTime VR. Christine Piatko and Sandy Ressler. ... Sandy Ressler's Office. Plant Floor of Black & Decker in Fayetteville NC. ...

232

Times are in Mountain Daylight Savings Time  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

AM 10:15 AM Westinghouse led FOA Xu 10:15 AM 10:30 AM Coffee Break 10:30 AM 10:50 AM EPRI research on Mo-based Accident Tolerant Fuels Cheng 10:50 AM 11:10 AM Ceramic coatings...

233

Noncommutative Two Time Physics  

E-Print Network (OSTI)

We present a classical formalism describing two-time physics with Abelian canonical gauge field backgrounds. The formalism can be used as a starting point for the construction of an interacting quantized two-time physics theory in a noncommutative soace-time.

W. Chagas-Filho

2006-04-03T23:59:59.000Z

234

Modeling data with multiple time dimensions  

Science Conference Proceedings (OSTI)

A large class of problems in time series analysis can be represented by a set of overlapping time series with different starting times. These time series may be treated as different probes of the same underlying process. Such probes may follow a characteristic ... Keywords: Dendrochronology, Douglas fir, Dual-time dynamics, El Malpais, Generalized additive models, Global climate change, Non-linear dynamics, Non-linear modeling, Pinon pine, Ponderosa pine, Portfolio forecasting, Retail lending, SETI@home, Scenario-based forecasting, Search for extraterrestrial intelligence, Time series, Tree rings

Joseph L. Breeden

2007-05-01T23:59:59.000Z

235

Times Higher Education -Top 10 researchers in chemistry based on total citations http://www.timeshighereducation.co.uk/story.asp?storyCode=403915[4/19/2009 6:13:57 PM  

E-Print Network (OSTI)

Search Jobs Search Archive Advanced Search All roles All locations Top 10 researchers in chemistry based COMMENT CAREER LEGAL BOOKS STATS ADVERTISE JOBS EVENTS MAGAZINE SUBSCRIBE Enter your keyword All roles All://www.timeshighereducation.co.uk/story.asp?storyCode=403915[4/19/2009 6:13:57 PM] © 2007 TSL Education Ltd. Contact us Feedback Terms & conditions Privacy

Yaghi, Omar M.

236

Quantum Operation Time Reversal  

E-Print Network (OSTI)

The dynamics of an open quantum system can be described by a quantum operation, a linear, complete positive map of operators. Here, I exhibit a compact expression for the time reversal of a quantum operation, which is closely analogous to the time reversal of a classical Markov transition matrix. Since open quantum dynamics are stochastic, and not, in general, deterministic, the time reversal is not, in general, an inversion of the dynamics. Rather, the system relaxes towards equilibrium in both the forward and reverse time directions. The probability of a quantum trajectory and the conjugate, time reversed trajectory are related by the heat exchanged with the environment.

Crooks, Gavin E

2007-01-01T23:59:59.000Z

237

Quantum Operation Time Reversal  

E-Print Network (OSTI)

The dynamics of an open quantum system can be described by a quantum operation, a linear, complete positive map of operators. Here, I exhibit a compact expression for the time reversal of a quantum operation, which is closely analogous to the time reversal of a classical Markov transition matrix. Since open quantum dynamics are stochastic, and not, in general, deterministic, the time reversal is not, in general, an inversion of the dynamics. Rather, the system relaxes towards equilibrium in both the forward and reverse time directions. The probability of a quantum trajectory and the conjugate, time reversed trajectory are related by the heat exchanged with the environment.

Gavin E. Crooks

2007-06-26T23:59:59.000Z

238

On the Time Times Temperature Bound  

E-Print Network (OSTI)

Recently Hod proposes a lower bound on the relaxation time of a perturbed thermodynamic system. For gravitational systems this bound transforms into a condition on the fundamental quasinormal frequency. We test the bound in some spacetimes whose quasinormal frequencies are calculated exactly, as the three-dimensional BTZ black hole, the D-dimensional de Sitter spacetime, and the D-dimensional Nariai spacetime. We find that for some of these spacetimes their fundamental quasinormal frequencies do not satisfy the bound proposed by Hod.

A. Lopez-Ortega

2010-06-28T23:59:59.000Z

239

What Time is It?  

Science Conference Proceedings (OSTI)

... These are sometimes marketed as "atomic clocks", but ... problems include incorrectly setting your local time zone on the clock, batteries that need ...

2011-01-19T23:59:59.000Z

240

Casimir forces in the time domain: Applications  

E-Print Network (OSTI)

Our previous article [Phys. Rev. A 80, 012115 (2009)] introduced a method to compute Casimir forces in arbitrary geometries and for arbitrary materials that was based on a finite-difference time-domain (FDTD) scheme. In ...

Johnson, Steven G.

Note: This page contains sample records for the topic "alt base time" 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.


241

Ultrafast supercontinuum fiber-laser based pump-probe scanning MOKE microscope for the investigation of electron spin dynamics in semiconductors at cryogenic temperatures with picosecond time and micrometer spatial resolution  

E-Print Network (OSTI)

We describe a two-color pump-probe scanning magneto-optical Kerr effect (MOKE) microscope which we have developed to investigate electron spin phenomena in semiconductors at cryogenic temperatures with picosecond time and micrometer spatial resolution. The key innovation of our microscope is the usage of an ultrafast `white light' supercontinuum fiber-laser source which provides access to the whole visible and near-infrared spectral range. Our Kerr microscope allows for the independent selection of the excitation and detection energy while avoiding the necessity to synchronize the pulse trains of two separate picosecond laser systems. The ability to independently tune the pump and probe wavelength enables the investigation of the influence of excitation energy on the optically induced electron spin dynamics in semiconductors. We demonstrate picosecond real-space imaging of the diffusive expansion of optically excited electron spin packets in a (110) GaAs quantum well sample to illustrate the capabilities of t...

Henn, T; Ossau, W; Molenkamp, L W; Biermann, K; Santos, P V

2013-01-01T23:59:59.000Z

242

TIME CALIBRATED OSCILLOSCOPE SWEEP  

DOE Patents (OSTI)

The time calibrator of an electric signal displayed on an oscilloscope is described. In contrast to the conventional technique of using time-calibrated divisions on the face of the oscilloscope, this invention provides means for directly superimposing equal time spaced markers upon a signal displayed upon an oscilloscope. More explicitly, the present invention includes generally a generator for developing a linear saw-tooth voltage and a circuit for combining a high-frequency sinusoidal voltage of a suitable amplitude and frequency with the saw-tooth voltage to produce a resultant sweep deflection voltage having a wave shape which is substantially linear with respect to time between equal time spaced incremental plateau regions occurring once each cycle of the sinusoidal voltage. The foregoing sweep voltage when applied to the horizontal deflection plates in combination with a signal to be observed applied to the vertical deflection plates of a cathode ray oscilloscope produces an image on the viewing screen which is essentially a display of the signal to be observed with respect to time. Intensified spots, or certain other conspicuous indications corresponding to the equal time spaced plateau regions of said sweep voltage, appear superimposed upon said displayed signal, which indications are therefore suitable for direct time calibration purposes.

Owren, H.M.; Johnson, B.M.; Smith, V.L.

1958-04-22T23:59:59.000Z

243

Semantics, experience and time  

Science Conference Proceedings (OSTI)

The computational hypothesis, with its inherent representationalism, and the dynamical hypothesis, with its apparent absence of representations and its commitment to continuous time, stand at an impasse. It is unclear how the dynamical stance can handle ... Keywords: Computation, Experience, Invariance, Semantics, Situatedness, Time

Stephen E. Robbins

2002-09-01T23:59:59.000Z

244

Real-time shading  

Science Conference Proceedings (OSTI)

Real-time procedural shading was once seen as a distant dream. When the first version of this course was offered four years ago, real-time shading was possible, but only with one-of-a-kind hardware or by combining the effects of tens to hundreds of rendering ...

Marc Olano; Kurt Akeley; John C. Hart; Wolfgang Heidrich; Michael McCool; Jason L. Mitchell; Randi Rost

2004-08-01T23:59:59.000Z

245

TIMING OF SHOCK WAVES  

DOE Patents (OSTI)

This patent relates to means for ascertaining the instant of arrival of a shock wave in an exploslve charge and apparatus utilizing this means to coordinate the timing of two operations involving a short lnterval of time. A pair of spaced electrodes are inserted along the line of an explosive train with a voltage applied there-across which is insufficient to cause discharge. When it is desired to initiate operation of a device at the time the explosive shock wave reaches a particular point on the explosive line, the device having an inherent time delay, the electrodes are located ahead of the point such that the ionization of the area between the electrodes caused by the traveling explosive shock wave sends a signal to initiate operation of the device to cause it to operate at the proper time. The operated device may be photographic equipment consisting of an x-ray illuminating tube.

Tuck, J.L.

1955-03-01T23:59:59.000Z

246

Apply for Beam Time | Advanced Photon Source  

NLE Websites -- All DOE Office Websites (Extended Search)

Apply for Beam Time Apply for Beam Time NEXT PROPOSAL DEADLINE: March 7, 2014 @ 11:59 PM (Chicago time) Submit Proposal » SEE ALSO: Calendar: deadlines, run & review dates Help Page: frequently asked questions, tips for success, common errors, blank forms, instructions Review Criteria Sectors Directory: check CAT websites for info about managed beam time The Run 2014-2 proposal submission deadline is 11:59 p.m. (Chicago time) March 7, 2014. The system will open to accept proposals beginning December 20, 2013. NEW USERS: to avoid delays and to make the most of your time on site, read Become a User. You must register as a user and receive a badge number before submitting a proposal. About the Beam Time Request Process All beam time at the APS must be requested each cycle through the web-based

247

Real-time var control by SCADA  

SciTech Connect

This paper outlines the operation and advantages of the SCADA capacitor control called CAPCON, developed by the Virginia Electric and Power Company (Virginia Power). CAPCON is used to control vars system-wide by switching substation capacitor banks based on real-time var and voltage data instead of the traditional time clock method.

Girotti, T.B.; Tweed, N.B.; Houser, N.R. (Virginia Power Co., Richmond, VA (USA))

1990-02-01T23:59:59.000Z

248

Efficient forecasting for hierarchical time series  

Science Conference Proceedings (OSTI)

Forecasting is used as the basis for business planning in many application areas such as energy, sales and traffic management. Time series data used in these areas is often hierarchically organized and thus, aggregated along the hierarchy levels based ... Keywords: forecasting, hierarchies, optimization, time series

Lars Dannecker; Robert Lorenz; Philipp Rsch; Wolfgang Lehner; Gregor Hackenbroich

2013-10-01T23:59:59.000Z

249

U.S. Marine Corp Logistics Base | Open Energy Information  

Open Energy Info (EERE)

Marine Corp Logistics Base Marine Corp Logistics Base Jump to: navigation, search Name U.S. Marine Corp Logistics Base Facility U.S. Marine Corp Logistics Base Sector Wind energy Facility Type Community Wind Facility Status In Service Location Barstow CA Coordinates 34.85832705°, -116.9559002° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":34.85832705,"lon":-116.9559002,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

250

Digital time delay  

DOE Patents (OSTI)

Method and apparatus are provided for generating an output pulse following a trigger pulse at a time delay interval preset with a resolution which is high relative to a low resolution available from supplied clock pulses. A first lumped constant delay provides a first output signal at predetermined interpolation intervals corresponding to the desired high resolution time interval. Latching circuits latch the high resolution data to form a first synchronizing data set. A selected time interval has been preset to internal counters and corrected for circuit propagation delay times having the same order of magnitude as the desired high resolution. Internal system clock pulses count down the counters to generate an internal pulse delayed by an internal which is functionally related to the preset time interval. A second LCD corrects the internal signal with the high resolution time delay. A second internal pulse is then applied to a third LCD to generate a second set of synchronizing data which is complementary with the first set of synchronizing data for presentation to logic circuits. The logic circuits further delay the internal output signal with the internal pulses. The final delayed output signal thereafter enables the output pulse generator to produce the desired output pulse at the preset time delay interval following input of the trigger pulse.

Martin, A.D.

1986-05-09T23:59:59.000Z

251

Time-parallel multiscale/multiphysics framework  

Science Conference Proceedings (OSTI)

We introduce the time-parallel compound wavelet matrix method (tpCWM) for modeling the temporal evolution of multiscale and multiphysics systems. The method couples time parallel (TP) and CWM methods operating at different spatial and temporal scales. ... Keywords: 02.00.00, 02.10.Jf, 05.10.-a, 46.15.-x, 47.70.Fw, Parallel-in-time, Wavelet-based multiscaling

G. Frantziskonis; K. Muralidharan; P. Deymier; S. Simunovic; P. Nukala; S. Pannala

2009-11-01T23:59:59.000Z

252

Environment Induced Time Arrow  

E-Print Network (OSTI)

The spread of the time arrows from the environment to an observed subsystem is followed within a harmonic model. A similarity is pointed out between irreversibility and a phase with spontaneously broken symmetry. The causal structure of interaction might be lost in the irreversible case, as well. The Closed Time Path formalism is developed for classical systems and shown to handle the time arrow problem in a clear and flexible manner. The quantum case is considered, as well, and the common origin of irreversibility and decoherence is pointed out.

Janos Polonyi

2012-06-25T23:59:59.000Z

253

VARIABLE TIME DELAY MEANS  

DOE Patents (OSTI)

An electrically variable time delay line is described which may be readily controlled simuitaneously with variable impedance matching means coupied thereto such that reflections are prevented. Broadly, the delay line includes a signal winding about a magnetic core whose permeability is electrically variable. Inasmuch as the inductance of the line varies directly with the permeability, the time delay and characteristic impedance of the line both vary as the square root of the permeability. Consequently, impedance matching means may be varied similariy and simultaneously w:th the electrically variable permeability to match the line impedance over the entire range of time delay whereby reflections are prevented.

Clemensen, R.E.

1959-11-01T23:59:59.000Z

254

Mar_13Times.indd  

NLE Websites -- All DOE Office Websites (Extended Search)

MARCH 2013 MARCH 2013 inside this issue ... FIRP draws to a close Page 2 Reminisce: Y-12 turns 70 Page 4 Russia's secret city Page 5 Development retools its CONOPS Page 6 ... and other Y-12 news Miss an issue? Find us online, http://www.y12.doe.gov/news/times.php MISSION, cont. on pg. 2 The National Nuclear Security Administration's Performance Evaluation Report for B&W Y-12, released Feb. 11, gave "Very Good" ratings to B&W Y-12 in areas related to all three core missions: maintaining the nuclear weapons stockpile, powering the nuclear Navy and nonproliferation. The report evaluates B&W Y-12's performance based on the Performance Evaluation Plan approved at the beginning of fi scal 2012. Programs The Y-12 Times highlighted the success of fi

255

Time, energy & form  

E-Print Network (OSTI)

Physical manifestations of time occur in natural forms of all sizes. Architectural form serves as shelter while providing a built envelope of human life, simultaneously influencing and influenced by energetic activities ...

McInnis, Martha Jane

1982-01-01T23:59:59.000Z

256

Dogs and Time  

NLE Websites -- All DOE Office Websites (Extended Search)

Question: I travel often and worry how leaving for long periods of time (and boarding my dog) will affect her. I wouldn't think that dogs could understand the concept of...

257

Wood Use Across Time  

E-Print Network (OSTI)

?Forest products history and use ?Forest resource- the big picture ?Consumption- the big picture ?Trends forest products industry ? pulp & paper ? solid woodBack in Time ?1492 ? Columbus sailed the ocean blue! ? wood use- fuelwood American Indians ?1634: Jean Nicolet

Scott Bowe; United States Wood Use

2005-01-01T23:59:59.000Z

258

Technical Talks Timing  

NLE Websites -- All DOE Office Websites (Extended Search)

Talks Timing The technical talks should last a maximum of 15 minutes with 5 minutes for set-up and 5 minutes for Q&A. No teamgroup presentations are allowed. The objective of...

259

Classification of the Entangled states L\\times N\\times N  

E-Print Network (OSTI)

We presented a general classification scheme for the tripartite $L\\times N\\times N$ entangled system under stochastic local operation and classical communication. The whole classification procedure consists of two correlated parts: the simultaneous similarity transformation of a commuting matrix pair into a canonical form and the study of internal symmetry of parameters in the canonical form. Based on this scheme, a concrete example of entanglement classification for a $3\\times N\\times N$ system is given.

Jun-Li Li; Shi-Yuan Li; Cong-Feng Qiao

2011-08-29T23:59:59.000Z

260

Quantum tunneling time  

E-Print Network (OSTI)

A simple model of a quantum clock is applied to the old and controversial problem of how long a particle takes to tunnel through a quantum barrier. The model I employ has the advantage of yielding sensible results for energy eigenstates, and does not require the use of time-dependant wave packets. Although the treatment does not forbid superluminal tunneling velocities, there is no implication of faster-than-light signaling because only the transit duration is measurable, not the absolute time of transit. A comparison is given with the weak-measurement post-selection calculations of Steinberg.

P. C. W. Davies

2004-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "alt base time" 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

NSIT Computer Time Services: Internet Time Service (ITS) ...  

Science Conference Proceedings (OSTI)

Page 1. NIST Special Publication 250-59 NIST Computer Time Services: Internet Time Service (ITS), Automated Computer Time Service (ACTS), ...

2012-09-16T23:59:59.000Z

262

Classification of Multi-Dimensional Streaming Time Series by Weighting each Classifier's Track Record  

E-Print Network (OSTI)

increasingly, home-based) medical devices can produce time series streams from more than twenty sensors

Keogh, Eammon

263

Hill Airforce Base Geothermal Project | Open Energy Information  

Open Energy Info (EERE)

Airforce Base Geothermal Project Airforce Base Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Hill Airforce Base Geothermal Project Project Location Information Coordinates 41.238888888889°, -111.97277777778° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.238888888889,"lon":-111.97277777778,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

264

Probabilistic timed behavior trees  

Science Conference Proceedings (OSTI)

The Behavior Tree notation has been developed as a method for systematically and traceably capturing user requirements. In this paper we extend the notation with probabilistic behaviour, so that reliability, performance, and other dependability properties ... Keywords: behavior trees, model checking, probabilities, timed automata

Robert Colvin; Lars Grunske; Kirsten Winter

2007-07-01T23:59:59.000Z

265

Genepool Time Heatmaps  

NLE Websites -- All DOE Office Websites (Extended Search)

Genepool Time Heatmaps Genepool Time Heatmaps Heatmap of Time and Slots Requested vs Time Waited (in hours) | Queue: All | Last 7 Days Time Requested Slots 1wk Job Count Longest Wait 1 23.0 (233) 0.37 (1819) 27.54 (49888) 5.85 (124593) 1.23 (39835) 0.34 (732) 0 0.4 (224) 0.02 (1) 217325 538.96 2 0 0.01 (19) 2.54 (78) 0.2 (140) 0.99 (2683) 0 0 0 0 2920 9.1 4 0.08 (1) 0 2.82 (141) 0.36 (143) 1.07 (12) 0.06 (5) 0.01 (5) 0.06 (1) 1.3 (5) 313 20.48 6 0.01 (2) 0 0.09 (32) 0.07 (1) 0 0 0 0 0 35 1.22 8 0.04 (24) 4.32 (7423) 5.31 (1999) 0.53 (316) 13.14 (2486) 0.01 (2) 1.21 (88) 1.3 (34) 8.33 (68) 12440 46.16 10 0 0 0 0 0 0 0 8.56 (1) 0 1 8.56 16 0 0 0 0.03 (1) 0 0 0 0 0 1 0.03 24 0 0 0 0 0 0 0 0 0.01 (1) 1 0.01 32 0 0 0 0.04 (14) 0 0 0 0.01 (6) 0 20 0.26

266

Detection and quantitation of HPV in genital and oral tissues and fluids by real time PCR  

E-Print Network (OSTI)

oral tissues and fluids by real time PCR. Virology Journalsamples by a real-time PCR- based system. J Virol MethodsMolecular beacon-based real-time PCR method for detection of

2010-01-01T23:59:59.000Z

267

A dynamic time warping approach to real-time activity recognition for food preparation  

Science Conference Proceedings (OSTI)

We present a dynamic time warping based activity recognition system for the analysis of low-level food preparation activities. Accelerometers embedded into kitchen utensils provide continuous sensor data streams while people are using them for cooking. ...

Cuong Pham; Thomas Pltz; Patrick Olivier

2010-11-01T23:59:59.000Z

268

Timed fast charger  

Science Conference Proceedings (OSTI)

In a charger for rechargeable electrochemical cells, a transformer charging circuit supplies a charging current to the battery at a fast charge rate for a predetermined time followed by a continuous slow charge rate. A normally closed automatic reset thermostat in series with the rectifier diodes in the charging circuit, and thermally coupled to them, opens after a period of time, dependent upon the heat generated by the rectifier diodes and upon the thermal mass of the thermostat and diodes, and terminates the fast charge current. A resistor, shunted across the thermostat and thermally coupled to it, establishes a slow charge rate current path when the thermostat opens. Heat generated in the resistor causes the thermostat to remain open as long as the battery is connected and ac power is supplied to the transformer primary winding.

Mullersman, F.H.

1981-10-27T23:59:59.000Z

269

Internet Topology over Time  

E-Print Network (OSTI)

There are few studies that look closely at how the topology of the Internet evolves over time; most focus on snapshots taken at a particular point in time. In this paper, we investigate the evolution of the topology of the Autonomous Systems graph of the Internet, examining how eight commonly-used topological measures change from January 2002 to January 2010. We find that the distributions of most of the measures remain unchanged, except for average path length and clustering coefficient. The average path length has slowly and steadily increased since 2005 and the average clustering coefficient has steadily declined. We hypothesize that these changes are due to changes in peering policies as the Internet evolves. We also investigate a surprising feature, namely that the maximum degree has changed little, an aspect that cannot be captured without modeling link deletion. Our results suggest that evaluating models of the Internet graph by comparing steady-state generated topologies to snapshots of the real data ...

Edwards, Benjamin; Stelle, George; Forrest, Stephanie

2012-01-01T23:59:59.000Z

270

Tests of timing properties of silicon photomultipliers  

Science Conference Proceedings (OSTI)

Timing measurements of Silicon Photomultipliers (SiPM) [1] and [2] at the picosecond level were performed at Fermilab. The core timing resolution of the electronic measurement technique is approximately 2 ps. The single photoelectron time resolution (SPTR) was measured for the signals coming from the SiPM's. A SPTR of about one hundred picoseconds was obtained for SiPM's illuminated by laser pulses. The dependence of the SPTR on applied bias voltage and on the wavelength of the light was measured. A simple model is proposed to explain the difference in the SPTR for blue and red light. A time of flight system based on the SiPM's, with quartz Cherenkov radiators, was tested in a proton beam at Fermilab. The time resolution obtained is 35 ps per SiPM. Finally, requirements for the SiPM's temperature and bias voltage stability to maintain the time resolution are discussed.

Ronzhin, A.; Albrow, M.; /Fermilab; Byrum, K.; /Argonne; Demarteau, M.; Los, S.; /Fermilab; May, E.; /Argonne; Ramberg, A.; /Fermilab; Va'vra, J.; /SLAC; Zatserklyaniy, A.; /Puerto Rico U., Mayaguez

2010-03-01T23:59:59.000Z

271

Space Time Matter inflation  

E-Print Network (OSTI)

We study a model of power-law inflationary inflation using the Space-Time-Matter (STM) theory of gravity for a five dimensional (5D) canonical metric that describes an apparent vacuum. In this approach the expansion is governed by a single scalar (neutral) quantum field. In particular, we study the case where the power of expansion of the universe is $p \\gg 1$. This kind of model is more successful than others in accounting for galaxy formation.

Mariano Anabitarte; Mauricio Bellini

2005-08-31T23:59:59.000Z

272

Combining motif information and neural network for time series prediction  

Science Conference Proceedings (OSTI)

Recent research works pay more attention to time series prediction, in which some time series data mining approaches have been exploited. In this paper, we propose a new method for time series prediction which is based on the concept of time series motifs. ...

Cao Duy Truong; Huynh Nguyen Tin; Duong Tuan Anh

2012-01-01T23:59:59.000Z

273

Proposal for Cherenkov Time of Flight Technique with Picosecond Resolution  

Science Conference Proceedings (OSTI)

A new particle identification device for Jlab 12 GeV program is proposed. It is based on the measurement of time information obtained by means of a new photon detector and time measuring concept. The expected time measurement precision for the Cherenkov time-of-flight detector is about or less than 10 picosecond for Cherenkov radiators with lengths less than 50 cm.

S. Majewski; A. Margaryan; L. Tang

2005-08-05T23:59:59.000Z

274

Software development with real-time collaborative editing  

E-Print Network (OSTI)

This thesis presents Collabode, a web-based integrated development environment for Java. With real-time collaborative editing, multiple programmers can use Collabode to edit the same source code at the same time. Collabode ...

Goldman, Max, Ph. D. Massachusetts Institute of Technology

2012-01-01T23:59:59.000Z

275

Quantum mechanics of time travel through post-selected teleportation  

E-Print Network (OSTI)

This paper discusses the quantum mechanics of closed-timelike curves (CTCs) and of other potential methods for time travel. We analyze a specific proposal for such quantum time travel, the quantum description of CTCs based ...

Maccone, Lorenzo

276

Time series association learning  

DOE Patents (OSTI)

This invention generally relates to machine-based speech and speaker recognition and, more particularly, to machine-based speech recognition using a learned relationship between acoustic and articulatory parameters. An acoustic input is recognized from inferred articulatory movements output by a learned relationship between training acoustic waveforms and articulatory movements. The inferred movements are compared with template patterns prepared from training movements when the relationship was learned to regenerate an acoustic recognition. In a preferred embodiment, the acoustic-articulatory relationships are learned by a neural network. Subsequent input acoustic patterns then generate the inferred articulatory movements for use with the templates. Articulatory movement data may be supplemented with characteristic acoustic information, e.g. relative power and high frequency data, to improve template recognition. 7 figs.

Papcun, G.J.

1990-01-31T23:59:59.000Z

277

EnergyPlus Run Time Analysis  

SciTech Connect

EnergyPlus is a new generation building performance simulation program offering many new modeling capabilities and more accurate performance calculations integrating building components in sub-hourly time steps. However, EnergyPlus runs much slower than the current generation simulation programs. This has become a major barrier to its widespread adoption by the industry. This paper analyzed EnergyPlus run time from comprehensive perspectives to identify key issues and challenges of speeding up EnergyPlus: studying the historical trends of EnergyPlus run time based on the advancement of computers and code improvements to EnergyPlus, comparing EnergyPlus with DOE-2 to understand and quantify the run time differences, identifying key simulation settings and model features that have significant impacts on run time, and performing code profiling to identify which EnergyPlus subroutines consume the most amount of run time. This paper provides recommendations to improve EnergyPlus run time from the modeler?s perspective and adequate computing platforms. Suggestions of software code and architecture changes to improve EnergyPlus run time based on the code profiling results are also discussed.

Hong, Tianzhen; Buhl, Fred; Haves, Philip

2008-09-20T23:59:59.000Z

278

Vacuum-Based Time-Resolved Photoluminescence Measurement System...  

NLE Websites -- All DOE Office Websites (Extended Search)

This system enables the simulation of conditions in a thin-film photovoltaic (PV) manufacturing line. NREL's work in recent years has demonstrated a clear correlation...

279

A Real Time Tax Smoothing Based Fiscal Policy Rule  

E-Print Network (OSTI)

|djdul/ U1/ D1 Pdufhw/ W1M1 Vdujhqw dqg M1 Vhssdod +5334, _Rswlpdo wd{dwlrq zlwkrxw vwdwh frqwlqjhqw ghew%/ plphr/ Xqlyhuvlw| ri Vwdqirug1 Dohvlqd/ D1 dqg D1 Gud}hq +4<<4, _Zk| duh vwdelolvdwlrqv ghod|hgB%/ Dphulfdq Hfrqrplf Uhylhz/ ;4/ 44:3044;;1 Dohvlqd/ D...

Loukoianova, Elena; Vahey, Shaun P; Wakerly, Elizabeth C

2004-06-16T23:59:59.000Z

280

Time consistency and risk averse dynamic decision models ...  

E-Print Network (OSTI)

asset and liability management, scheduling and energy planning. Indeed, ..... the recursive time consistent alternative developed for a CVaR-based portfo-.

Note: This page contains sample records for the topic "alt base time" 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

Time and Frequency from A to Z: U to W  

Science Conference Proceedings (OSTI)

... UT0 - The original mean solar time scale, based on the rotation of the Earth on its ... It has equal power per hertz over the specified frequency band. ...

2010-10-05T23:59:59.000Z

282

Verifying Timing Constraints of Real-Time Systems by Means of Evolutionary Testing  

Science Conference Proceedings (OSTI)

Many industrial products are based on the use of embedded computer systems. Usually, these systems have to fulfil real-time requirements, and correct system functionality depends on their logical correctness as well as on their temporal correctness. ... Keywords: Real-time systems, evolutionary algorithm, evolutionary optimization, evolutionary testing, temporal behavior, temporal correctness , test strategy, testing, validation, verification

Joachim Wegener; Matthias Grochtmann

1998-11-01T23:59:59.000Z

283

Characterizing time decay of bibenzyl scintillator using time correlated single photon counting  

Science Conference Proceedings (OSTI)

The time decay of several scintillation materials has been measured using the time correlated single photon counting method and a new organic crystal with a highly suppressed delayed light has been identified. Results comparing the light decay of the bibenzyl crystal with a xylene based detector, which is currently installed at National Ignition Facility will be presented.

Hatarik, R.; Bernstein, L. A.; Caggiano, J. A.; Carman, M. L.; Schneider, D. H. G.; Zaitseva, N. P. [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); Wiedeking, M. [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); iThemba LABS, P.O. Box 722, 7129 Somerset West (South Africa)

2012-10-15T23:59:59.000Z

284

QUADRENNIAL MCNP TIMING STUDY  

Science Conference Proceedings (OSTI)

The Los Alamos National Laboratory Monte Carlo N-Particle radiation transport code, MCNP, is widely used around the world for many radiation protection and shielding applications. As a well-known standard it is also an excellent vehicle for assessing the relative performance of scientific computing platforms. Every three-to-four years a new version of MCNP is released internationally by the Radiation Safety Information Computational Center (RSICC) in Oak Ridge, Tennessee. For each of the past few releases, we have also done a timing study to assess the progress of scientific computing platforms and software. These quadrennial timing studies are valuable to the radiation protection and shielding community because (a) they are performed by a recognized scientific team, not a computer vendor, (b) they use an internationally recognized code for radiation protection and shielding calculations, (c) they are eminently reproducible since the code and the test problems are internationally distributed. Further, if one has a computer platform, operating system, or compiler not presented in our results, its performance is directly comparable to the ones we report because it can use the same code, data, and test problems as we used. Our results, using a single processor per platform, indicate that hardware advances during the past three years have improved performance by less than a factor of two and software improvements have had a marginal effect on performance. The most significant impacts on performance have resulted from developments in multiprocessing and multitasking. The other most significant advance in the last three years has been the accelerated improvements in personal computers. In the last timing study, the tested personal computer was approximately a factor of four slower that the fastest machine tested, a DEC Alphastation 500. In the present study, the fastest PC tested was less than a factor of two slower than the fastest platform, which is a Compaq (previously DEC) Alpha XP1000.

E. C. SELCOW; B. D. LANSRUD

2000-09-01T23:59:59.000Z

285

Exploiting VERITAS Timing Information  

E-Print Network (OSTI)

The 499 pixel photomultiplier cameras of the VERITAS gamma ray telescopes are instrumented with 500MHz sampling Flash ADCs. This paper describes a preliminary investigation of the best methods by which to exploit this information so as to optimize the signal-to-noise ratio for the detection of Cherenkov light pulses. The FADCs also provide unprecedented resolution for the study of the timing characteristics of Cherenkov images of cosmic-ray and gamma-ray air showers. This capability is discussed, together with the implications for gamma-hadron separation.

J. Holder; for the VERITAS Collaboration

2005-07-19T23:59:59.000Z

286

Homestead Base, Florida: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Base, Florida: Energy Resources Base, Florida: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 25.4950211°, -80.3936994° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":25.4950211,"lon":-80.3936994,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

287

It's Time to ACT | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

It's Time to ACT It's Time to ACT It's Time to ACT May 25, 2011 - 10:32am Addthis John Lippert In my November 29, 2010 and my February 15, 2011 blog postings, I described some tools and strategies based on behavioral psychology that some companies and organizations are using to encourage people to use less energy and purchase clean energy. Here's another one. I was reading an article the other day in which University of Nevada, Reno, psychologist Steven Hayes gave his explanation of why we Americans are so reluctant to adjust our thermostats. He believes our culture has conditioned us to avoid all discomfort. In other words, we believe that we should feel good all the time. The funny thing is that I heard multiple times essentially the same message at religious services I attended. The common thread in these messages and

288

It's Time to ACT | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

It's Time to ACT It's Time to ACT It's Time to ACT May 25, 2011 - 10:32am Addthis John Lippert In my November 29, 2010 and my February 15, 2011 blog postings, I described some tools and strategies based on behavioral psychology that some companies and organizations are using to encourage people to use less energy and purchase clean energy. Here's another one. I was reading an article the other day in which University of Nevada, Reno, psychologist Steven Hayes gave his explanation of why we Americans are so reluctant to adjust our thermostats. He believes our culture has conditioned us to avoid all discomfort. In other words, we believe that we should feel good all the time. The funny thing is that I heard multiple times essentially the same message at religious services I attended. The common thread in these messages and

289

Good Timing: NIST/CU Collaboration Adds Timing Capability ...  

Science Conference Proceedings (OSTI)

... With the added capability to track the timing of dynamic biochemical reactions, cell ... to measure sensor signals at two points in time at a rate of up to ...

2012-02-07T23:59:59.000Z

290

A Time Bucket Formulation for the TSP with Time Windows  

E-Print Network (OSTI)

Nov 10, 2009 ... The Traveling Salesman Problem with Time Windows (TSPTW) is the problem of finding a ... To obtain a good partition of the time windows, we.

291

REAL TIME SYSTEM OPERATIONS 2006-2007  

Science Conference Proceedings (OSTI)

The Real Time System Operations (RTSO) 2006-2007 project focused on two parallel technical tasks: (1) Real-Time Applications of Phasors for Monitoring, Alarming and Control; and (2) Real-Time Voltage Security Assessment (RTVSA) Prototype Tool. The overall goal of the phasor applications project was to accelerate adoption and foster greater use of new, more accurate, time-synchronized phasor measurements by conducting research and prototyping applications on California ISO's phasor platform - Real-Time Dynamics Monitoring System (RTDMS) -- that provide previously unavailable information on the dynamic stability of the grid. Feasibility assessment studies were conducted on potential application of this technology for small-signal stability monitoring, validating/improving existing stability nomograms, conducting frequency response analysis, and obtaining real-time sensitivity information on key metrics to assess grid stress. Based on study findings, prototype applications for real-time visualization and alarming, small-signal stability monitoring, measurement based sensitivity analysis and frequency response assessment were developed, factory- and field-tested at the California ISO and at BPA. The goal of the RTVSA project was to provide California ISO with a prototype voltage security assessment tool that runs in real time within California ISO?s new reliability and congestion management system. CERTS conducted a technical assessment of appropriate algorithms, developed a prototype incorporating state-of-art algorithms (such as the continuation power flow, direct method, boundary orbiting method, and hyperplanes) into a framework most suitable for an operations environment. Based on study findings, a functional specification was prepared, which the California ISO has since used to procure a production-quality tool that is now a part of a suite of advanced computational tools that is used by California ISO for reliability and congestion management.

Eto, Joseph H.; Parashar, Manu; Lewis, Nancy Jo

2008-08-15T23:59:59.000Z

292

User customizable real-time fur  

Science Conference Proceedings (OSTI)

Recent advances in real-time fur rendering have enabled the development of more realistic furry characters. In this sketch, we outline a number of advances to the shell and fin based fur rendering technique by Lengyel et al [2001] using the pixel and ...

John Isidoro; Jason L. Mitchell

2002-07-01T23:59:59.000Z

293

Efficient real-time divisible load scheduling  

Science Conference Proceedings (OSTI)

Providing QoS and performance guarantees to arbitrarily divisible loads has become a significant problem for many cluster-based research computing facilities. While progress is being made in scheduling arbitrarily divisible loads, current approaches ... Keywords: Arbitrarily divisible loads, Cluster computing, Real-time computing, Scheduling efficiency

Anwar Mamat; Ying Lu; Jitender Deogun; Steve Goddard

2012-12-01T23:59:59.000Z

294

The Heliosphere in Time  

E-Print Network (OSTI)

Because of the dynamic nature of the interstellar medium, the Sun should have encountered a variety of different interstellar environments in its lifetime. As the solar wind interacts with the surrounding interstellar medium to form a heliosphere, different heliosphere shapes, sizes, and particle contents result from the different environments. Some of the large possible interstellar parameter space (density, velocity, temperature) is explored here with the help of global heliosphere models, and the features in the resulting heliospheres are compared and discussed. The heliospheric size, expressed as distance of the nose of the heliopause to the Sun, is set by the solar wind - interstellar pressure balance, even for extreme cases. Other heliospheric boundary locations and neutral particle results correlate with the interstellar parameters as well. If the H0 clouds identified in the Millennium Arecibo survey are typical of clouds encountered by the Sun, then the Sun spends ~99.4% of the time in warm low density ISM, where the typical upwind heliosphere radii are up to two orders of magnitude larger than at present.

H. -R. Mller; P. C. Frisch; B. D. Fields; G. P. Zank

2008-10-02T23:59:59.000Z

295

NIST Time Scale Data Archive  

Science Conference Proceedings (OSTI)

NIST Time Scale Data Archive. ... The AT1 scale is run in real time using data from an ensemble of cesium standards and hydrogen masers. ...

2013-08-07T23:59:59.000Z

296

Time and Frequency Division Homepage  

Science Conference Proceedings (OSTI)

... Controlled ClocksTelephone TimeDivision HistoryFrequently Asked Questions (FAQ)Time and Frequency from A to Z: An illustrated glossaryA Walk ...

2013-12-27T23:59:59.000Z

297

Time dependent Directional Profit Model for Financial Time Series Forecasting  

E-Print Network (OSTI)

Time dependent Directional Profit Model for Financial Time Series Forecasting Jingtao YAO Chew Lim@comp.nus.edu.sg Abstract Goodness­of­fit is the most popular criterion for neural network time series forecasting. In the context of financial time series forecasting, we are not only concerned at how good the forecasts fit

Yao, JingTao

298

ALT AMONT BLU EBELL NATUR AL BU TT ES PLAT EAU CATHED RAL RED...  

Annual Energy Outlook 2012 (EIA)

DANFORT H HILL S WIN TER C AM P BIG RID GEC O DRY FORKC O DRY FORKC O PR ICKLY PEAR BOOK CLIFF S COYOTE BASIN COON H OLL OW DRY CR EEKUT WEAVER RID GE ASBUR Y CREEK SKIN NER...

299

Chi'08 alt.chi / auralscapes: engaging ludic ambiguity in the design of a spatial system  

Science Conference Proceedings (OSTI)

Ambiguity as a resource for interactive systems is gaining momentum within HCI. In this paper we describe a spatial system designed at the intersection of architecture and computing; using ludic ambiguity as its theoretical construct. Through description ... Keywords: ambiguity, ludic design, ubiquitous computing, workplace design

Anijo Punnen Mathew; Justin Taylor

2008-04-01T23:59:59.000Z

300

Austin Energy AltCar Expo - AVTA's PHEV Testing and Demonstration...  

NLE Websites -- All DOE Office Websites (Extended Search)

Economy Driving Schedule) dynamometer test cycles 6 Hymotion Prius - UDDS Fuel Use * 5 kWh A123Systems (Li) V1 and Prius packs (AC kWh) Hymotion PHEV Prius MPG & kWh - UDDS...

Note: This page contains sample records for the topic "alt base time" 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

Time Synchronization in Hierarchical TESLA Wireless Sensor Networks  

SciTech Connect

Time synchronization and event time correlation are important in wireless sensor networks. In particular, time is used to create a sequence events or time line to answer questions of cause and effect. Time is also used as a basis for determining the freshness of received packets and the validity of cryptographic certificates. This paper presents secure method of time synchronization and event time correlation for TESLA-based hierarchical wireless sensor networks. The method demonstrates that events in a TESLA network can be accurately timestamped by adding only a few pieces of data to the existing protocol.

Jason L. Wright; Milos Manic

2009-08-01T23:59:59.000Z

302

NSLS User Access | Requesting Beam Time  

NLE Websites -- All DOE Office Websites (Extended Search)

Requesting Beam Time Requesting Beam Time Use one of the following options depending on your research: General User Proposal General User proposals are peer reviewed for scientific merit by a Proposal Review Panel (PRP). General User proposals compete for beamtime with other General User Proposals based on scientific merit. Once the original proposal and beam time request is reviewed and rated in the PASS System, additional beam time requests can be submitted against the original proposal for its lifetime, a period of up to six cycles (two years). Data taken during experiments associated with a General User proposal is considered to be in the public domain. There is no charge for General User beamtime. Rapid Access Rapid Access proposals are a subset of General User proposals available for

303

Model checking Timed CSP Philip Armstrong Gavin Lowe Joel Ouaknine  

E-Print Network (OSTI)

Model checking Timed CSP Philip Armstrong Gavin Lowe Jo¨el Ouaknine A.W. Roscoe Oxford University Department of Computer Science Abstract Though Timed CSP was developed 25 years ago and the CSP for Timed CSP. In this paper we report on the creation of such a version, based on the digitisation results

Ouaknine, Joël

304

RF Cherenkov picosecond timing technique for high energy physics applications  

Science Conference Proceedings (OSTI)

The Cherenkov time-of-propagation (TOP) detector and Cherenkov time-of-flight (TOF) detector in a ?head-on? geometry based on the recently proposed time measuring technique with radio frequency (RF) phototube are considered. Results of the Monte Carlo simulations are presented.

Margaryan, Amur; Hashimoto, Osamu; Majewski, Stanislaw; Tang, Liguang

2008-09-01T23:59:59.000Z

305

Real time reactive programming in lucid enriched with contexts  

Science Conference Proceedings (OSTI)

We present a synchronous approach to real-time reactive programming in Lucid enriched with contexts as first class objects. The declarative intensional approach allows real-time reactive programs to manipulate both events and state-based representations ... Keywords: contexts, formal verification, intensional programming, real-time reactive programming

Kaiyu Wan; Vasu Alagar; Joey Paquet

2004-09-01T23:59:59.000Z

306

First-passage-time problems in time-aware networks  

E-Print Network (OSTI)

First passage time or the first time that a stochastic process crosses a boundary is a random variable whose probability distribution is sought in engineering, statistics, finance, and other disciplines. The probability ...

Suwansantisuk, Watcharapan, 1978-

2012-01-01T23:59:59.000Z

307

NIST: A Walk Through Time - The "Atomic Age" of Time ...  

Science Conference Proceedings (OSTI)

... Transportation, communication, financial transactions, manufacturing, electric power and many ... The next generation of time standards is presently ...

2010-10-05T23:59:59.000Z

308

Conservative Explicit Unrestricted-Time-Step Multidimensional Constancy-Preserving Advection Schemes  

Science Conference Proceedings (OSTI)

The multidimensional advection schemes described in this study are based on a strictly conservative flux-based control-volume formulation. They use an explicit forward-in-time update over a single time step, but there are no stability ...

B. P. Leonard; A. P. Lock; M. K. MacVean

1996-11-01T23:59:59.000Z

309

NIST Time Scale Data Archive  

Science Conference Proceedings (OSTI)

NIST Time Scale Data Archive. Updated monthly. Return to Archive index Leap second and UT1-UTC information. This page ...

2013-08-07T23:59:59.000Z

310

Personalised time-dependent learning  

Science Conference Proceedings (OSTI)

Time-dependent instruction appears to shape next-generation learning systems, where the value of instruction is as important as the time it takes to learn. The ability to grasp the exact knowledge required to accomplish a specific task, in the ... Keywords: adaptive learning, authoring tools, knowledge management, learning granularity, learning objects, learning resources, learning technology, learning web, ontology, personalised learning, semantic web, time constraints, time-dependent learning, timeliness

R. Benlamri; Y. Atif; J. Berri

2009-04-01T23:59:59.000Z

311

The mixing time for simple exclusion  

E-Print Network (OSTI)

We obtain a tight bound of $O(L^2\\log k)$ for the mixing time of the exclusion process in $\\mathbf{Z}^d/L\\mathbf{Z}^d$ with $k\\leq{1/2}L^d$ particles. Previously the best bound, based on the log Sobolev constant determined by Yau, was not tight for small $k$. When dependence on the dimension $d$ is considered, our bounds are an improvement for all $k$. We also get bounds for the relaxation time that are lower order in $d$ than previous estimates: our bound of $O(L^2\\log d)$ improves on the earlier bound $O(L^2d)$ obtained by Quastel. Our proof is based on an auxiliary Markov chain we call the chameleon process, which may be of independent interest.

Ben Morris

2004-05-10T23:59:59.000Z

312

Codes base on unambiguous products  

Science Conference Proceedings (OSTI)

In this paper, we propose the notion of +-unambiguous product which is expanded from unambiguous product and the definitions of alternative product, alternative code, even alternative code on a pair (X, Y) of languages. Some basic properties of ... Keywords: +-unambiguous product, alt-code, ealt-code, generations of code, independency of conditions

Ho Ngoc Vinh; Vu Thanh Nam; Phan Trung Huy

2010-11-01T23:59:59.000Z

313

Time  

NLE Websites -- All DOE Office Websites (Extended Search)

Judges 9:00- 9:25 Materials Science Mathew Cherukara Shock Induced Chemistry of NiAl Nano-Composites Chen, X. Gyrya, V. 9:25- 9:50 Materials Science Christian Sorensen Explosive...

314

Measurable Maximal Energy and Minimal Time Interval  

E-Print Network (OSTI)

The possibility of finding the measurable maximal energy and the minimal time interval is discussed in different quantum aspects. It is found that the linear generalized uncertainty principle (GUP) approach gives a non-physical result. Based on large scale Schwarzshild solution, the quadratic GUP approach is utilized. The calculations are performed at the shortest distance, at which the general relativity is assumed to be a good approximation for the quantum gravity and at larger distances, as well. It is found that both maximal energy and minimal time have the order of the Planck time. Then, the uncertainties in both quantities are accordingly bounded. Some physical insights are addressed. Also, the implications on the physics of early Universe and on quantized mass are outlined. The results are related to the existence of finite cosmological constant and minimum mass (mass quanta).

Eiman Abou El Dahab; Abdel Nasser Tawfik

2014-01-14T23:59:59.000Z

315

All Time, All the Time: Improving NIST Radio  

Science Conference Proceedings (OSTI)

... need for manual adjustments when Daylight Saving Time begins and ends, and allowing automatic resetting of clocks following a power outage.

2011-10-06T23:59:59.000Z

316

A Time Bucket Formulation for the TSP with Time Windows  

E-Print Network (OSTI)

Nov 5, 2009 ... Abstract: The Traveling Salesman Problem with Time Windows (TSPTW) is the problem of finding a minimum-cost path visiting a set of cities...

317

Guidelines for Transitioning from Time-Based Maintenance to Condition-Based Maintenance  

Science Conference Proceedings (OSTI)

BackgroundUtilities have provided feedback to the Electric Power Research Institute (EPRI) that they do not feel that they have fully capitalized on past optimization projects. Current living programs using classical predictive maintenance technologies, component and system testing programs, existing maintenance backlogs, system monitoring, system health, and operator feedback to provide a more complete picture of equipment condition may be providing more insight into ...

2013-11-13T23:59:59.000Z

318

EPICS BASE  

Energy Science and Technology Software Center (OSTI)

002230MLTPL00 Experimental Physics and Industrial Control System BASE http://www.aps.anl.gov/epics

319

Time-lock Puzzles and Timed-release Crypto  

Science Conference Proceedings (OSTI)

Our motivation is the notion of ``timed-release crypto,'''' where the goal is to encrypt a message so that it can not be decrypted by anyone, not even the sender, until a pre-determined amount of time has passed. The goal is to ``send information into ...

R. L. Rivest; A. Shamir; D. A. Wagner

1996-02-01T23:59:59.000Z

320

Reactor control rod timing system  

DOE Patents (OSTI)

A fluid driven jet-edge whistle timing system for control rods of a nuclear reactor for producing real-time detection of the timing of each control rod in its scram operation. An important parameter in reactor safety, particularly for liquid metal fast breeder reactors (LMFBR), is the time deviation between the time the control rod is released and the time the rod actually reaches the down position. The whistle has a nearly pure tone signal with center frequency (above 100 kHz) far above the frequency band in which the energy of the background noise is concentrated. Each control rod can be fitted with a whistle with a different frequency so that there is no ambiguity in differentiating the signal from each control rod.

Wu, Peter T. K. (Clifton Park, NY)

1982-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "alt base time" 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

VARIABLE TIME-INTERVAL GENERATOR  

DOE Patents (OSTI)

This patent relates to a pulse generator and more particularly to a time interval generator wherein the time interval between pulses is precisely determined. The variable time generator comprises two oscillators with one having a variable frequency output and the other a fixed frequency output. A frequency divider is connected to the variable oscillator for dividing its frequency by a selected factor and a counter is used for counting the periods of the fixed oscillator occurring during a cycle of the divided frequency of the variable oscillator. This defines the period of the variable oscillator in terms of that of the fixed oscillator. A circuit is provided for selecting as a time interval a predetermined number of periods of the variable oscillator. The output of the generator consists of a first pulse produced by a trigger circuit at the start of the time interval and a second pulse marking the end of the time interval produced by the same trigger circuit.

Gross, J.E.

1959-10-31T23:59:59.000Z

322

Agent based control of power systems, ForskEL (Smart Grid Project) | Open  

Open Energy Info (EERE)

Agent based control of power systems, ForskEL (Smart Grid Project) Agent based control of power systems, ForskEL (Smart Grid Project) Jump to: navigation, search Project Name Agent based control of power systems, ForskEL Country Denmark Coordinates 56.26392°, 9.501785° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":56.26392,"lon":9.501785,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

323

Essays in time and risk  

E-Print Network (OSTI)

lists yield systematically higher discount rates and utilityList methodology: identifying time preferences with MPLs and utilityrisk price list to inform curvature of the utility function

Sprenger, Charles

2011-01-01T23:59:59.000Z

324

Time-critical information services  

Science Conference Proceedings (OSTI)

Emergency medical services have never been more ready for the implementation of time-critical interorganizational information services for the public good.

Thomas A. Horan; Benjamin L. Schooley

2007-03-01T23:59:59.000Z

325

Time and Frequency Users Manual  

Science Conference Proceedings (OSTI)

... 9 TERMS USED 11 ... 135 GLOSSARY 137 INDEX ... The OIL INDUSTRY needs accurate timing to help automate oil well drilling, especially offshore. ...

2002-01-02T23:59:59.000Z

326

Automated Computer Time Service (ACTS)  

Science Conference Proceedings (OSTI)

... provided since 1988 for users who need to synchronize computer clocks to ... For computers with Internet access, the Internet Time Service should be ...

2013-02-22T23:59:59.000Z

327

Real time wind turbine simulator.  

E-Print Network (OSTI)

??A novel dynamic real-time wind turbine simulator (WTS) is developed in this thesis, which is capable of reproducing dynamic behavior of real wind turbine. The (more)

Gong, Bing

2007-01-01T23:59:59.000Z

328

Transit-Time Distributions in a Global Ocean Model  

Science Conference Proceedings (OSTI)

Results from a simulation of the ocean transit-time distribution (TTD) for global and regional ocean surface boundary conditions are presented based on a 5000-yr integration using the Parallel Ocean Program ocean general circulation model. ...

Synte Peacock; Mathew Maltrud

2006-03-01T23:59:59.000Z

329

Bayesian Mixture of AR Models for Time Series Clustering  

Science Conference Proceedings (OSTI)

In this paper we propose a Bayesian framework for estimation of parameters of a mixture of autoregressive model, for time series clustering. The proposed approach is based on variational principles and provides a tractable approximation to the true posterior ...

Venkataramana Kini B; C. Chandra Sekhar

2009-02-01T23:59:59.000Z

330

The 8 requirements of real-time stream processing  

Science Conference Proceedings (OSTI)

Applications that require real-time processing of high-volume data steams are pushing the limits of traditional data processing infrastructures. These stream-based applications include market feed processing and electronic trading on Wall Street, network ...

Michael Stonebraker; U?ur etintemel; Stan Zdonik

2005-12-01T23:59:59.000Z

331

Point-Based Graphics  

Science Conference Proceedings (OSTI)

The polygon-mesh approach to 3D modeling was a huge advance, but today its limitations are clear. Longer render times for increasingly complex images effectively cap image complexity, or else stretch budgets and schedules to the breaking point. Point-based ... Keywords: Computer Graphics, Computers

Markus Gross; Hanspeter Pfister

2007-06-01T23:59:59.000Z

332

A Simulator for Timed CSP  

E-Print Network (OSTI)

Time is an integral aspect of computer systems. It is essential for modelling a systems performance, but may also affect its safety or security. Timed CSP [Sch00] conservatively extends the process algebra CSP with timed primitives, where real numbers ? 0 model how time passes with reference to a single, conceptually global, clock. While there have been approaches for model checking Timed CSP ([Sch00, DHSZ06]), to the best of our knowledge we are the first to present a simulator for Timed CSP. Here, we restrict time to rational values only. Theoretically, this limits the expressibility of the language. Practically, this limitation turns out to be negligible (for instance all examples of Schneiders book [Sch00] can be dealt with in our simulator). The simulator is the outcome of an undergraduate project at Swansea University [Dra11]. Our Timed CSP simulator extends the open source tool ProB [Leu]. ProBs CSP simulator works as follows: The CSP specification is analyzed by a parser (written in Haskell) and translated to a representation in Prolog. A CSP Interpreter (in Prolog) stores the firing rules of CSPs operational semantics. The Simulator (also in Prolog) determines the actions available and the resultant states. A GUI (written in Tcl/Tk) allows the user to interact with the Simulator. Timed CSP is closed under rational time [DNR11]. Consider, for example, the following firing rule ( t ? stands for a timed transition of duration t): P d? ? P ? (P ?d Q) d?

Marc Dragon; Andy Gimblett; Markus Roggenbach; Jens Bendisposto; Cliff Jones; Michael Leuschel; Er Romanovsky; Tiziana Margaria; Julia Padberg; Gabriele Taentzer; Marc Dragon; Andy Gimblett; Markus Roggenbach

2011-01-01T23:59:59.000Z

333

Electric Time in Quantum Cosmology  

E-Print Network (OSTI)

Effective quantum cosmology is formulated with a realistic global internal time given by the electric vector potential. New possibilities for the quantum behavior of space-time are found, and the high-density regime is shown to be very sensitive to the specific form of state realized.

Stephon Alexander; Martin Bojowald; Antonino Marciano; David Simpson

2012-12-10T23:59:59.000Z

334

Finding patterns in timed data with spike timing dependent plasticity  

E-Print Network (OSTI)

My research focuses on finding patterns in events - in sequences of data that happen over time. It takes inspiration from a neuroscience phenomena believed to be deeply involved in learning. I propose a machine learning ...

Oliveira, Alexandre (Alexandre S.)

2012-01-01T23:59:59.000Z

335

Divergent Circulations on the 30 to 50 Day Time Scale  

Science Conference Proceedings (OSTI)

A brief review of some of the recent results on the 30 to 50 day time scale is presented in this paper. We have examined the divergent circulations on the time scale of 30 to 50 days during the FGGE year. The present study is based on two ...

T. N. Krishnamurti; P. K. Jayakumar; Jian Sheng; Naoml Surgi; Arun Kumar

1985-02-01T23:59:59.000Z

336

Analysis of Wind Generation System by Real-Time Simulation  

Science Conference Proceedings (OSTI)

Due to the demand of green energy, the number of wind turbines installed has been increased drastically worldwide. Comparing with the traditional utility generation systems, the dynamic characteristic and response of wind farms are totally different. ... Keywords: Doubly-fed induction generator, real-time simulation, PC cluster-based real-time simulator, wind farm

H. C. Su; G. W. Chang; H. M. Huang; K. K. Jen; G. C. Chung; G. Z. Wu

2012-06-01T23:59:59.000Z

337

Object-oriented logical specification of time-critical systems  

Science Conference Proceedings (OSTI)

We define TRIO+, an object-oriented logical language for modular system specification. TRIO+ is based on TRIO, a first-order temporal language that is well suited to the specification of embedded and real-time ... Keywords: first-order logic, formal specifications, model-theoretic semantics, object-oriented methodologies, real-time systems, temporal logic

Angelo Morzenti; Pierluigi San Pietro

1994-01-01T23:59:59.000Z

338

Multirate Explicit Adams Methods for Time Integration of Conservation Laws  

Science Conference Proceedings (OSTI)

This paper constructs multirate linear multistep time discretizations based on Adams-Bashforth methods. These methods are aimed at solving conservation laws and allow different timesteps to be used in different parts of the spatial domain. The proposed ... Keywords: Adams methods, Conservation laws, Multirate time integration

Adrian Sandu; Emil M. Constantinescu

2009-02-01T23:59:59.000Z

339

Real-Time Camera Planning for Navigation in Virtual Environments  

Science Conference Proceedings (OSTI)

In this work, we have developed a real-time camera control module for navigation in virtual environments. With this module, the tracking motion of a third-person camera can be generated automatically to allow a user to focus on the control of an avatar. ... Keywords: Budget-based Planning, Intelligent Cam-era Control, Probabilistic Roadmap, Real-Time Camera Planning

Tsai-Yen Li; Chung-Chiang Cheng

2008-08-01T23:59:59.000Z

340

Time-independent and time-dependent contributions to the unavailability of standby safety system components  

Science Conference Proceedings (OSTI)

The unavailability of standby safety system components due to failures in nuclear power plants is considered to involve a time independent and a time dependent part. The former relates to the component`s unavailability from demand stresses due to usage, and the latter represents the component`s unavailability due to standby time stresses related to the environment. In this paper, data from the nuclear plant reliability data system (NPRDS) were used to partition the component`s unavailability into the contributions from standby time stress (i.e., due to environmental factors) and demand stress (i.e., due to usage). Analyses are presented of motor operated valves (MOVs), motor driven pumps (MDPs), and turbine driven pumps (FDPs). MOVs fail predominantly (approx. 78%) from environmental factors (standby time stress failures). MDPs fail slightly more frequently from demand stresses (approx. 63%) than standby time stresses, while TDPs fail predominantly from standby time stresses (approx. 78%). Such partitions of component unavailability have many uses in risk informed and performance based regulation relating to modifications to Technical Specification, in-service testing, precise determination of dominant accident sequences, and implementation of maintenance rules.

Lofgren, E.V. [Science Applications International Corp., Fairfax Station, VA (United States); Uryasev, S.; Samanta, P. [Brookhaven National Lab., Upton, NY (United States)

1997-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "alt base time" 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

Upgrade of NSLS timing system  

SciTech Connect

We report on the progress of the new NSLS timing system. There are three types of requirements for NSLS timing system: clocks, synchronization and trigger circuits. All ring revolution frequency clocks are generated using ECL and high speed TTL logic. The synchronization circuits allows to fill both storage rings with any bunch pattern. The triggers are generated by using commercially available digital delay generators. The delay unit`s outputs are ultrastable, with a resolution of 5 ps, and are programmed by computer via IEEE 488 interface. The block diagrams, description of all major timing components and the present status are provided in this paper.

Singh, O.; Ramamoorthy, S.; Sheehan, J.; Smith, J.

1995-05-01T23:59:59.000Z

342

A Thermal Time-Constant Experiment* KYLE RESSLER  

E-Print Network (OSTI)

cable, and BASIC Stamp), a DC power supply, and a Windows-based PC computer with a serial I/O connectionA Thermal Time-Constant Experiment* KYLE RESSLER Dept. of Mechanical Eng., Washington University . Parallax `Board-of-EducationTM ' Board . Base Plate (25 cm ? 15 cm ? 5 mm) . Blower fan (12 V DC, 0.2 A

Nagurka, Mark L.

343

Finite-Time Singularity Signature of Hyperinflation  

E-Print Network (OSTI)

We present a novel analysis extending the recent work of Mizuno et al. [2002] on the hyperinflations of Germany (1920/1/1-1923/11/1), Hungary (1945/4/30-1946/7/15), Brazil (1969-1994), Israel (1969-1985), Nicaragua (1969-1991), Peru (1969-1990) and Bolivia (1969-1985). On the basis of a generalization of Cagan's model of inflation based on the mechanism of ``inflationary expectation'' or positive feedbacks between realized growth rate and people's expected growth rate, we find that hyperinflations can be characterized by a power law singularity culminating at a critical time $t_c$. Mizuno et al.'s double-exponential function can be seen as a discrete time-step approximation of our more general nonlinear ODE formulation of the price dynamics which exhibits a finite-time singular behavior. This extension of Cagan's model, which makes natural the appearance of a critical time $t_c$, has the advantage of providing a well-defined end of the clearly unsustainable hyperinflation regime. We find an excellent and reliable agreement between theory and data for Germany, Hungary, Peru and Bolivia. For Brazil, Israel and Nicaragua, the super-exponential growth seems to be already contaminated significantly by the existence of a cross-over to a stationary regime.

D. Sornette; H. Takayasu; W. -X. Zhou

2003-01-06T23:59:59.000Z

344

Real-time scheduling with regenerative energy  

E-Print Network (OSTI)

This paper investigates real-time scheduling in a system whose energy reservoir is replenished by an environmental power source. The execution of tasks is deemed primarily energy-driven, i.e., a task may only respect its deadline if its energy demand can be satisfied early enough. Hence, a useful scheduling policy should account for properties of the energy source, capacity of the energy storage as well as power dissipation of the single tasks. We show that conventional scheduling algorithms (like e.g. EDF) are not suitable for this scenario. Based on this motivation, we state and prove optimal scheduling algorithms that jointly handle constraints from both energy and time domain. Furthermore, an offline schedulability test for a set of periodic or even bursty tasks is presented. Finally, we validate the proposed theory by means of simulation and compare our algorithms with the classical Earliest Deadline First Algorithm. 1.

C. Moser; D. Brunelli; L. Thiele; L. Benini

2006-01-01T23:59:59.000Z

345

Silicon photomultiplier timing performance study  

E-Print Network (OSTI)

Many characteristics of Silicon Photomultipliers can be tuned with temperature and operation voltage. We present preliminary results of a study of the effect of these two operation parameters on the time resolution of large active area Multi-Pixel Photon Counters (MPPCs) manufactured by Hamamatsu. Measurements at -10 C, 0 C, and 10 C at different bias voltages were performed. The time resolution is best at low temperature and high over-voltage. Most significant improvements can be achieved in cases with low number of fired pixels (40 pixels) the effect of temperature and operation voltage becomes smaller. The timing performance still improves with decreasing temperature (~ factor of 2) but it hardly depends on the operation voltage. The study shows, that especially in applications where only few photons are available for detection a careful optimization of temperature and operation voltage are advisable to obtain optimum timing results with the MPPC.

Gama Ahmed; Paul Bhler; Johann Marton; Ken Suzuki

2010-06-21T23:59:59.000Z

346

Logarithmic time parallel Bayesian inference  

Science Conference Proceedings (OSTI)

I present a parallel algorithm for exact probabilistic inference in Bayesian networks. For polytree networks with n variables, the worstcase time complexity is O(logn) on a CREW PRAM (concurrent-read, exclusive-write parallel random-access ...

David M. Pennock

1998-07-01T23:59:59.000Z

347

The structure of cosmic time  

E-Print Network (OSTI)

Following the approach of Julien Lesgourgues [1], we analyze the mathematical structure of the time co-ordinate of present day cosmological models, where these models include a cosmological constant term to account for the observed acceleration of the universe [2], [3]: we find that in all cases, except for a set of measure zero in the parameter space, the time is given by an (abelian) integral on a torus; the imaginary period of this integral then gives a natural periodicity in imaginary time for the universe; following Stephen Hawking [4], [5], this periodicity may be interpreted either as giving a fundamental mass scale for the universe, or (using Plancks constant) a fundamental temperature, or both. The precise structure that emerges suggests that the structure of time can be regarded as an order parameter arising perhaps in a phase transition in the early universe; one might hope that this structure

George Sparling

2006-01-01T23:59:59.000Z

348

A real time priority scheduler  

Science Conference Proceedings (OSTI)

The real time priority scheduler reported herein evolved from a design effort to provide software aids for handling the interrupts that occur in hybrid computation. Since these interrupts are both internal and external (i.e., generated internal and external ...

Karl Ramsay; Jon C. Strauss

1966-01-01T23:59:59.000Z

349

Discrete space-time symmetries  

SciTech Connect

Symmetries have always fascinated human beings; they are found in nature, art, and architecture. Physicists, like other scientists have often used symmetries as a basis of their understanding of nature. When the dynamics is unknown, symmetries serve to delineate and define it. When the dynamics is known, symmetries are used to study structure. These two lectures review the theory and present understanding and status of two discrete space-time symmetries,, namely parity (P) and time reversal (T).

Henley, E.M.

1992-12-31T23:59:59.000Z

350

Discrete space-time symmetries  

SciTech Connect

Symmetries have always fascinated human beings; they are found in nature, art, and architecture. Physicists, like other scientists have often used symmetries as a basis of their understanding of nature. When the dynamics is unknown, symmetries serve to delineate and define it. When the dynamics is known, symmetries are used to study structure. These two lectures review the theory and present understanding and status of two discrete space-time symmetries,, namely parity (P) and time reversal (T).

Henley, E.M.

1992-01-01T23:59:59.000Z

351

Reduction in maximum time uncertainty of paired time signals  

DOE Patents (OSTI)

Reduction in the maximum time uncertainty (t/sub max/ - t/sub min/) of a series of paired time signals t/sub 1/ and t/sub 2/ varying between two input terminals and representative of a series of single events where t/sub 1/ less than or equal to t/sub 2/ and t/sub 1/ + t/sub 2/ equals a constant, is carried out with a circuit utilizing a combination of OR and AND gates as signal selecting means and one or more time delays to increase the minimum value (t/sub min/) of the first signal t/sub 1/ closer to t/sub max/ and thereby reduce the difference. The circuit may utilize a plurality of stages to reduce the uncertainty by factors of 20 to 800.

Theodosiou, G.E.; Dawson, J.W.

1981-02-11T23:59:59.000Z

352

A Simplification of a Real-Time Verification Problem  

E-Print Network (OSTI)

We revisit the problem of real-time verification with dense dynamics using timeout and calendar based models and simplify this to a finite state verification problem. To overcome the complexity of verification of real-time systems with dense dynamics, Dutertre and Sorea, proposed timeout and calender based transition systems to model the behavior of real-time systems and verified safety properties using k-induction in association with bounded model checking. In this work, we introduce a specification formalism for these models in terms of Timeout Transition Diagrams and capture their behavior in terms of semantics of Timed Transition Systems. Further, we discuss a technique, which reduces the problem of verification of qualitative temporal properties on infinite state space of (a large fragment of) these timeout and calender based transition systems into that on clockless finite state models through a two-step process comprising of digitization and canonical finitary reduction. This technique enables us to ve...

Saha, Indranil; Roy, Suman; 10.1007/978-3-540-75596-8_21

2010-01-01T23:59:59.000Z

353

Time-domain Fatigue Response and Reliability Analysis of Offshore Wind Turbines with  

E-Print Network (OSTI)

-domain based simulation model of 750 kW land-based wind turbine Gear contact fatigue analysis of a wind of 750 kW land-based wind turbine Gear contact fatigue analysis of a wind turbine drive train under response and reliability analysis #12;Time domain based simulation model of 750 kW land-based wind turbine

Nørvåg, Kjetil

354

Development and Field Testing of Laser Photodiode Array-Based Vehicle Detection Systems  

E-Print Network (OSTI)

A Real-Time Laser-Based Detection System for Measurement ofTime Laser-Based Prototype Detection System for Measurement

2004-01-01T23:59:59.000Z

355

Time-to-Produce, Inventory, and Asset Prices  

E-Print Network (OSTI)

In a production-based general equilibrium model, I study the impact of time-to-build and time-to-produce technology constraints and inventory on asset prices and macroeconomic quantity dynamics. A time-to-build constraint captures the delay in transforming new investment into productive capital; a time-to-produce constraint captures the delay in transforming productive capital into final products. Empirically, I find that the U.S. economy in aggregate exhibits approximately a three-quarter time-to-build and a four-quarter time-to-produce constraint. These delays in the production process introduce short-run risks in the economy where inventory accumulation facilitates consumption smoothing over time. Using this structure for time-to-build and time-to-produce constraints, I numerically calibrate a production-based general equilibrium model where the representative investor has recursive preferences over consumption and inventory. The model delivers first and second moments of macroeconomic quantities and asset prices consistent with the data. A small elasticity of intertemporal substitution is necessary to positively price the short-run risks induced by the production constraints. Inventories help fit the volatilities of asset returns, while the time-to-produce feature ensures nontrivial inventory holdings. In addition, the model is able to match empirical lead-lag patterns between asset prices and macroeconomic quantities as well as observed equity return predictability.

Chen, Zhanhui

2011-08-01T23:59:59.000Z

356

Tough Times for the Muskrats  

NLE Websites -- All DOE Office Websites (Extended Search)

Tough Times for the Muskrats Tough Times for the Muskrats Nature Bulletin No. 3 February 24, 1945 Forest Preserve District of Cook County Clayton F Smith, President Roberts Mann, Superintendent of Conservation TOUGH TIMES FOR THE MUSKRATS This has been a sorry year for the muskrats. The long drought, last summer and fall, dried up many of the smaller marshes and ponds where they had been living and forced them to migrate overland to new homes. Many undoubtedly were killed while enroute by mink, hawks, or dogs. Even the larger marshes and ponds were made smaller and more shallow by the drought and now this severe winter, with its long, bitter cold, has caused many of them to freeze solid to the very bottom; thus sealing the muskrats up in their lodges and preventing them from swimming around under the ice to get food.

357

Time-Off Awards Scale  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

/1/2010 /1/2010 TIME OFF AWARD SCALE The following chart is recommended and should be used unless another time-off award scale has been adopted by the servicing human resources office. TIME OFF SCALE VALUE OF THE EMPLOYEE'S CONTRIBUTION HOURS TO BE AWARDED MODERATE - A contribution to a product, program or service to the public which is of sufficient value to merit formal recognition. Beneficial change or modification of operating principles or procedures. 1 - 10 Hours SUBSTANTIAL - An important contribution to the value of a product, activity, program or service to the public. Significant change or modification or operating principles or procedures. 11 - 20 Hours HIGH - A significant contribution to the value of a product, activity, program or service to

358

May 2008 Y-12 Times  

NLE Websites -- All DOE Office Websites (Extended Search)

5 5 May 2008 www.y12.doe.gov/news/times.php P.O. Box 2009 Oak Ridge, TN 37831-8245 Managing Editor Melissa Leinart 865-574-1621 (6ml) Associate Editors Amy Alley Heidi Spurling Layout/Design Lisa Harris Contributors Ellen Boatner Ken Davis Kathy Fahey Stuart Hames Sharon McConathy Patrick McCoy I N S I D E Page 3 Fire department members come to the rescue Page 4 Driving green to protect our natural resources Page 5 73s: Best regards from Y-12's hams Page8 What's the secret? Mary Murray Brett Pate Ray Smith Donna Watson Bill Wilburn Lisa Xiques times times the B&W Technical Services Y-12, LLC, a partnership between Babcock & Wilcox Technical Services Group Inc. and Bechtel National Inc., operates the Y-12 National Security Complex. When you see information regarding the recent Voluntary Separation Payment

359

Dielectric Analog Space-Times  

E-Print Network (OSTI)

We generalize the notion of a dielectric analog Schwarzschild black hole model to analog models of arbitrary space-times; in particular, the approach is not restricted to static space-times. This is done by establishing a correspondence between electrodynamics on a curved, vacuum manifold, with electrodynamics in a general linear dielectric residing in Minkowski space-time. The mapping is not unique, allowing for some freedom in the specification of equivalent materials, which could be useful for exploiting recent developments in the production of metamaterials. Some examples are considered, with special attention paid to the dielectric analog of the exterior Kerr geometry, which is found to be reproducible with regular, linear, dielectrics.

Robert T. Thompson; Jrg Frauendiener

2010-10-08T23:59:59.000Z

360

VIVACE context based search platform  

Science Conference Proceedings (OSTI)

One of the key challenges of knowledge management is to provide the right knowledge to the right person at the right time. To face this challenge, a context based search platform was developed in the frame of the European Integrated Project VIVACE. This ... Keywords: analogy and case based reasoning, context aware systems and applications, context modelling, knowledge management

Romaric Redon; Andreas Larsson; Richard Leblond; Barthelemy Longueville

2007-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "alt base time" 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

PRECISION TIME-DELAY CIRCUIT  

DOE Patents (OSTI)

A tine-delay circuit which produces a delay time in d. The circuit a capacitor, an te back resistance, connected serially with the anode of the diode going to ground. At the start of the time delay a negative stepfunction is applied to the series circuit and initiates a half-cycle transient oscillatory voltage terminated by a transient oscillatory voltage of substantially higher frequency. The output of the delay circuit is taken at the junction of the inductor and diode where a sudden voltage rise appears after the initiation of the higher frequency transient oscillations.

Creveling, R.

1959-03-17T23:59:59.000Z

362

Time of flight mass spectrometer  

DOE Patents (OSTI)

A time-of-flight mass spectrometer is described in which ions are desorbed from a sample by nuclear fission fragments, such that desorption occurs at the surface of the sample impinged upon by the fission fragments. This configuration allows for the sample to be of any thickness, and eliminates the need for complicated sample preparation.

Ulbricht, Jr., William H. (Arvada, CO)

1984-01-01T23:59:59.000Z

363

Waste to Energy Time Activities  

E-Print Network (OSTI)

SEMINAR Waste to Energy Time Activities 9:30-9:40 Brief introduction of participants 9:40-10:10 Presentation of Dr. Kalogirou, "Waste to Energy: An Integral Part of Worldwide Sustainable Waste Management" 10. Sofia Bethanis, "Production of synthetic aggregates for use in structural concrete from waste to energy

Columbia University

364

Vocal Timing in the Bat  

E-Print Network (OSTI)

Bats are social organisms that live in large colonies. However, reliance upon echolocation in order to hunt and navigate, means that bats also face pressing acoustic challenges due to overlap with surrounding noise. Bats also possess fine control over the properties of their echolocation pulses. This study's goal was to determine how bats are able to effectively function in large groups despite the interfering noise generated by conspecifics. Mexican free-tailed bats (Tadarida brasiliensis) were exposed to both artificially generated interfering noises and noise generated by conspecifics, and the temporal characteristics of their resulting echolocation calls were analyzed. In addition, bats were given injections of dopaminergic and serotonergic drugs, in an effort to determine which monoamine(s) were capable of altering vocal motor timing and to determine which regions of the brain play a role in regulating the timing of echolocation. I hypothesized that bats would alter the timing of emission of their own echolocation pulses in response to noise, and that drugs affecting the 5HT2A receptor would shift the timing of emission of echolocation pulses. The first part of this dissertation describes a novel temporal alteration behavior that occurs in response to artificially generated intermittent noise, and is characterized by a period of pulse suppression followed by a gradual return to normal call rates. Bats alter the timing of emission of their echolocation pulses to avoid overlap with noise and call within silent periods. The second part of this study investigated whether dopamine or serotonin, or both, could alter the timing of this vocal behavior. The results of this study were inconclusive, although I found some evidence that 5HT2A agonists can produce faster responses. Finally, I show that echolocating bats suppress pulse emission in nearby conspecifics. The resulting decrease in call rate leads to an overall increase in information throughput. This study also demonstrates that bats respond to continuous noise by increasing their call rate, and that the switch between the responses to intermittent noise and continuous noise occurs at a duty cycle of 50% or higher. Overall, this dissertation establishes that bats alter the timing of emission of their echolocation calls in response to noise, and that these mechanisms may be regulated by serotoninergic mechanisms.

Jarvis, Jenna N

2013-05-01T23:59:59.000Z

365

Timing system of the Swiss Light Source  

E-Print Network (OSTI)

The timing system of the Swiss Light Source is based on the event system concept of APS, Argonne [1]. However, for SLS the hardware was completely redesigned while preserving the software compatibility with the APS system. This gave us a head start in the implementation: we could use the latest available hardware and take advantage of the features integrated in the EPICS software. The event system is used as the sole timing distribution method, for hardware trigger delivery (assisted with a high-precision delay at a few places) and for controlling all the timing-related tasks of operation: injector sequencing, filling patterns, software synchronization, timestamps and so on. The event network is also extended to the beamlines to allow synchronization of the beamline experiments. The implementation consists of the hardware (Gigabit Ethernet link, FPGAs) and a firmware core written in VHDL. The functionality of the cards can be modified in situ by rewriting the firmware in flash memory. On the other hand, the f...

Korhonen, T T; Korhonen, Timo; Heiniger, Martin

2001-01-01T23:59:59.000Z

366

Continuous-time quantum error correction  

E-Print Network (OSTI)

Continuous-time quantum error correction (CTQEC) is an approach to protecting quantum information from noise in which both the noise and the error correcting operations are treated as processes that are continuous in time. This chapter investigates CTQEC based on continuous weak measurements and feedback from the point of view of the subsystem principle, which states that protected quantum information is contained in a subsystem of the Hilbert space. We study how to approach the problem of constructing CTQEC protocols by looking at the evolution of the state of the system in an encoded basis in which the subsystem containing the protected information is explicit. This point of view allows us to reduce the problem to that of protecting a known state, and to design CTQEC procedures from protocols for the protection of a single qubit. We show how previously studied CTQEC schemes with both direct and indirect feedback can be obtained from strategies for the protection of a single qubit via weak measurements and weak unitary operations. We also review results on the performance of CTQEC with direct feedback in cases of Markovian and non-Markovian decoherence, where we have shown that due to the existence of a Zeno regime in non-Markovian dynamics, the performance of CTQEC can exhibit a quadratic improvement if the time resolution of the weak error-correcting operations is high enough to reveal the non-Markovian character of the noise process.

Ognyan Oreshkov

2013-11-11T23:59:59.000Z

367

Predictable real-time software synthesis  

Science Conference Proceedings (OSTI)

Formal theories for real-time systems (such as timed process algebra, timed automata and timed petri nets) have gained great success in the modeling of concurrent timing behavior and in the analysis of real-time properties. However, due to the ineliminable ... Keywords: Formal methods, Program synthesis, Real-time systems

Jinfeng Huang; Jeroen Voeten; Henk Corporaal

2007-08-01T23:59:59.000Z

368

Local Incentive-Based Policy for Vegetable-Agroforestry: a  

Open Energy Info (EERE)

Local Incentive-Based Policy for Vegetable-Agroforestry: a Local Incentive-Based Policy for Vegetable-Agroforestry: a locally-appropriate adaptation and mitigation action (LAAMA) to climate change Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Local Incentive-Based Policy for Vegetable-Agroforestry: a locally-appropriate adaptation and mitigation action (LAAMA) to climate change Agency/Company /Organization: World Agroforestry Centre Sector: Land Focus Area: Agriculture, Forestry Topics: Adaptation, Background analysis, Policies/deployment programs Resource Type: Guide/manual, Lessons learned/best practices Website: www.worldagroforestrycentre.org/sea/Publications/files/policybrief/PB0 Country: Philippines South-Eastern Asia Coordinates: 12.879721°, 121.774017° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":12.879721,"lon":121.774017,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

369

ARM - Time in ARM NetCDF Files  

NLE Websites -- All DOE Office Websites (Extended Search)

govDataTime in ARM NetCDF Files govDataTime in ARM NetCDF Files Page Contents Introduction Time Zones Epoch Time Time Variables Conversion Examples and Hints Perl Example C Example Fortran Example IDL Example Notes on Generating Epoch Times Contact Information Time in ARM NetCDF Files Introduction This document explains most of the issues related to the use of time in ARM netCDF data files. Time Zones All ARM netCDF files are in UTC. Note that this has some implications for solar-based data; we tend to split our files at midnight, but the sun is still up at 0000 UTC at SGP in the late spring and summer, and all the time at TWP. This means a given solar arc may be broken across two different files. That's just the way it is; using local time in ARM files would have been a bigger mess. Note that splitting files at 0000 UTC is not an ARM standard, and many

370

High resolution time interval meter  

DOE Patents (OSTI)

Method and apparatus are provided for measuring the time interval between two events to a higher resolution than reliability available from conventional circuits and component. An internal clock pulse is provided at a frequency compatible with conventional component operating frequencies for reliable operation. Lumped constant delay circuits are provided for generating outputs at delay intervals corresponding to the desired high resolution. An initiation START pulse is input to generate first high resolution data. A termination STOP pulse is input to generate second high resolution data. Internal counters count at the low frequency internal clock pulse rate between the START and STOP pulses. The first and second high resolution data are logically combined to directly provide high resolution data to one counter and correct the count in the low resolution counter to obtain a high resolution time interval measurement.

Martin, A.D.

1986-05-09T23:59:59.000Z

371

Test of timing properties of the Photek 240 PMT  

Science Conference Proceedings (OSTI)

Timing measurements of Silicon Photomultipliers (SiPM) at the picosecond level were performed at Fermilab. The core timing resolution of the electronic measurement technique is approximately 2 picoseconds. The single photoelectron time resolution (SPTR) was measured for the signals coming from the SiPM's. A SPTR of about one hundred picoseconds was obtained for SiPM's illuminated by laser pulses. The dependence of the SPTR on applied bias voltage and on the wavelength of the light was measured. A simple model is proposed to explain the difference in the SPTR for blue and red light. A time of flight system based on the SiPM's, with quartz Cherenkov radiators, was tested in a proton beam at Fermilab. The time resolution obtained is 35 picoseconds per SiPM. Finally, requirements for the SiPM's temperature and bias voltage stability to maintain the time resolution are discussed.

Ronzhin, A.; Albrow, M.; Demarteau, M.; Pronko, S.; Ramberg, E.; /Fermilab; Zatserklyaniy, A.; /Puerto Rico U., Mayaguez

2010-01-01T23:59:59.000Z

372

Time-parareal parallel in time integrator solver for time-dependent neutron diffusion equation  

E-Print Network (OSTI)

-dependent spatial flux distribution in nuclear reactor is required for nuclear safety and design. The motivation present a time-parallel algorithm that simulate the kinetic of neutron2 in a nuclear reactor. We consider engine behavior and in particular its energy4 production.5 The flux distribution on the nuclear reactor

373

Why Time is Future Oriented  

E-Print Network (OSTI)

We assume that the universe consists of clusters which in turns have sub-clusters and the sub-clusters have sub-subclusters and so on. Confining to three-dimensional space, it is shown that the universe is expanding if entropy of the universe increases. It is also shown that clocks slow down when time progresses towards future. Our model also justifies the big bang theory.

Shahid N. Afridi; M. Khalid Khan

2004-12-09T23:59:59.000Z

374

A framework for jitter analysis in cell based multiplexers  

Science Conference Proceedings (OSTI)

Keywords: ATM, B-ISDN, cell based networks, cell delay variation, discrete time queues, jitter, periodic arrivals, statistical multiplexing

Chatschik Bisdikian; Wassim Matragi; Khosrow Sohraby

1995-05-01T23:59:59.000Z

375

Beam-Based Alignment  

NLE Websites -- All DOE Office Websites (Extended Search)

One: One: Single-Bunch Comparative Study of Three Algorithms Peter Tenenbaum LCC-Note-0013 17-February-1999 Abstract We describe the results of a series of simulation studies of beam-based alignment of the NLC main linacs using the program LIAR. Three algorithms for alignment of quadrupoles and girders are consid- ered: the algorithm used in the ZDR, the ZDR algorithm combined with a post-alignment MICADO operation, and an algorithm which requires no steering dipoles but requires twice as many alignment segments per linac as the ZDR algorithm. The third algorithm appears to be the most robust, based on convergence time, required quad mover step sizes, and variation in extracted beam emittance as a function of BNS profile. We also study the effect of structure BPM resolution and ATL misalignments during the alignment process. 1 Introduction Beam-based alignment and steering of the

376

Sampled-data IIR filtering via time-mode signal processing  

Science Conference Proceedings (OSTI)

In this work, the design of sampled-data infinite impulse response (IIR) filters based on time-mode signal processing (TMSP) circuits is presented. Time-mode signal processing, defined as the processing of sampled analog information using time-difference ... Keywords: Filtering, Infinite impulse response, Sampled-data, Time-mode signal processing

Michael M. Guttman; Gordon W. Roberts

2012-06-01T23:59:59.000Z

377

Improved forecasting of time series data of real system using genetic programming  

Science Conference Proceedings (OSTI)

A study is made to improve short term forecasting of time series data of real system using Genetic Programming (GP) under the framework of time delayed embedding technique. GP based approach is used to make analytical model of time series data of real ... Keywords: genetic programming, state-space reconstruction, time series forecasting

Dilip P. Ahalpara

2010-07-01T23:59:59.000Z

378

Base Elements  

Science Conference Proceedings (OSTI)

Table 4   Principal effects of superalloy base elements on alloy characteristics...to γ? or γ? Requires fcc stabilizer Cobalt prices have been known to be volatile in the past. Suitable for creep-resistant applications with low stresses or

379

The Application of Time Series Models to Cloud Field Morphology Analysis  

Science Conference Proceedings (OSTI)

A modeling method for the quantitative description of remotely sensed cloud field images is presented. A two-dimensional texture modeling scheme based on one-dimensional time series procedures is adopted for this purpose. The time series ...

Roland T. Chin; Jack Y. C. Jau; James A. Weinman

1987-03-01T23:59:59.000Z

380

Incorporating attitudes in airline itinerary choice : modeling the impact of elapsed time  

E-Print Network (OSTI)

Network airlines traditionally try to minimize the elapsed time of their passengers in connecting travel, based on the assumption that longer elapsed times would make their itinerary less competitive and thus reduce their ...

Theis, Georg Wilhelm

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "alt base time" 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

Modeling the Variability of Drop Size Distributions in Space and Time  

Science Conference Proceedings (OSTI)

The information on the time variability of drop size distributions (DSDs) as seen by a disdrometer is used to illustrate the structure of uncertainty in radar estimates of precipitation. Based on this, a method to generate the spacetime ...

Gyu Won Lee; Alan W. Seed; Isztar Zawadzki

2007-06-01T23:59:59.000Z

382

General Interest NIST Time and Frequency Publications  

Science Conference Proceedings (OSTI)

... Time and Frequency Users Manual A detailed ... Fundamentals of Time and Frequency An overview of ... Lombardi, The Mechatronics Handbook, 2001. ...

2012-01-31T23:59:59.000Z

383

Computer-based and web-based radiation safety training  

SciTech Connect

The traditional approach to delivering radiation safety training has been to provide a stand-up lecture of the topic, with the possible aid of video, and to repeat the same material periodically. New approaches to meeting training requirements are needed to address the advent of flexible work hours and telecommuting, and to better accommodate individuals learning at their own pace. Computer- based and web-based radiation safety training can provide this alternative. Computer-based and web- based training is an interactive form of learning that the student controls, resulting in enhanced and focused learning at a time most often chosen by the student.

Owen, C., LLNL

1998-03-01T23:59:59.000Z

384

Flash Memory Garbage Collection in Hard Real-Time Systems  

E-Print Network (OSTI)

Due to advances in capacity, speed, and economics, NAND-based flash memory technology is increasingly integrated into all types of computing systems, ranging from enterprise servers to embedded devices. However, due to its unpredictable up-date behavior and time consuming garbage collection mechanism, NAND-based flash memory is difficult to integrate into hard-real-time embedded systems. In this thesis, I propose a performance model for flash memory garbage collection that can be used in conjunction with a number of different garbage collection strategies. I describe how to model the cost of reactive (lazy) garbage collection and compare it to that of more proactive schemes. I develop formulas to assess the schedulability of hard real- time periodic task sets under simplified memory consumption models. Results show that I prove the proactive schemes achieve the larger maximum schedulable utilization than the traditional garbage collection mechanism for hard real-time systems in flash memory.

Lai, Chien-An

2011-08-01T23:59:59.000Z

385

Timing matters: Lessons From The CA Literature On Updating  

E-Print Network (OSTI)

In the present article we emphasize the importance of modeling time in the context of agent-based models. To this end, we present a (selective) survey of the Cellular Automata-literature on updating and draw parallels to the issue of agent activation in agent-based models. By means of two simple models, Schelling's segregation model and Epstein's demographic prisoner's dilemma we investigate the influence of choosing different regimes of agent activation. Our experiments indicate that timing is not a critical issue for very simple models but bears huge influence on model behavior and results as soon as the degree of complexity increases only so slightly. After a brief review of the way commonly used ABM simulation environments handle the issue of timing, we draw some tentative conclusions about the importance of timing and the need for more research towards that direction, similar to the concerted effort on updating in cellular automata.

Radax, Wolfgang

2010-01-01T23:59:59.000Z

386

Real time infrared aerosol analyzer  

DOE Patents (OSTI)

Apparatus for analyzing aerosols in essentially real time includes a virtual impactor which separates coarse particles from fine and ultrafine particles in an aerosol sample. The coarse and ultrafine particles are captured in PTFE filters, and the fine particles impact onto an internal light reflection element. The composition and quantity of the particles on the PTFE filter and on the internal reflection element are measured by alternately passing infrared light through the filter and the internal light reflection element, and analyzing the light through infrared spectrophotometry to identify the particles in the sample.

Johnson, Stanley A. (Countryside, IL); Reedy, Gerald T. (Bourbonnais, IL); Kumar, Romesh (Naperville, IL)

1990-01-01T23:59:59.000Z

387

TANK 21 AND TANK 24 BLEND AND FEED STUDY: BLENDING TIMES, SETTLING TIMES, AND TRANSFERS  

Science Conference Proceedings (OSTI)

The Salt Disposition Integration (SDI) portfolio of projects provides the infrastructure within existing Liquid Waste facilities to support the startup and long term operation of the Salt Waste Processing Facility (SWPF). Within SDI, the Blend and Feed Project will equip existing waste tanks in the Tank Farms to serve as Blend Tanks where salt solutions of up to 1.2 million gallons will be blended in 1.3 million gallon tanks and qualified for use as feedstock for SWPF. In particular, Tanks 21 and 24 are planned to be used for blending and transferring to the SDI feed tank. These tanks were evaluated here to determine blending times, to determine a range of settling times for disturbed sludge, and to determine that the SWPF Waste Acceptance Criteria that less than 1200 mg/liter of solids will be entrained in salt solutions during transfers from the Tank 21 and Tank 24 will be met. Overall conclusions for Tank 21 and Tank 24 operations include: (1) Experimental correction factors were applied to CFD (computational fluid dynamics) models to establish blending times between approximately two and five hours. As shown in Phase 2 research, blending times may be as much as ten times greater, or more, if lighter fluids are added to heavier fluids (i.e., water added to salt solution). As the densities of two salt solutions converge this effect may be minimized, but additional confirmatory research was not performed. (2) At the current sludge levels and the presently planned operating heights of the transfer pumps, solids entrainment will be less than 1200 mg/liter, assuming a conservative, slow settling sludge simulant. (3) Based on theoretical calculations, particles in the density range of 2.5 to 5.0 g/mL must be greater than 2-4 {micro}m in diameter to ensure they settle adequately in 30-60 days to meet the SWPF feed criterion ( 60 days) settling times in Tank 21.

Lee, S.; Leishear, R.; Poirier, M.

2012-05-31T23:59:59.000Z

388

Global Warming in Geologic Time  

Science Conference Proceedings (OSTI)

The notion is pervasive in the climate science community and in the public at large that the climate impacts of fossil fuel CO2 release will only persist for a few centuries. This conclusion has no basis in theory or models of the atmosphere/ ocean carbon cycle, which we review here. The largest fraction of the CO2 recovery will take place on time scales of centuries, as CO2 invades the ocean, but a significant fraction of the fossil fuel CO2, ranging in published models in the literature from 20-60%, remains airborne for a thousand years or longer. Ultimate recovery takes place on time scales of hundreds of thousands of years, a geologic longevity typically associated in public perceptions with nuclear waste. The glacial/interglacial climate cycles demonstrate that ice sheets and sea level respond dramatically to millennial-timescale changes in climate forcing. There are also potential positive feedbacks in the carbon cycle, including methane hydrates in the ocean, and peat frozen in permafrost, that are most sensitive to the long tail of the fossil fuel CO2 in the atmosphere.

Archer, David (University of Chicago)

2008-02-27T23:59:59.000Z

389

Residential Real-time Price Response Simulation  

Science Conference Proceedings (OSTI)

The electric industry is gaining experience with innovative price responsive demand pilots and limited roll-outs to customers. One of these pilots is investigating real-time pricing signals to engage end-use systems and local distributed generation and storage in a distributed optimization process. Attractive aspects about the approach include strong scalability characteristics, simplified interfaces between automation devices, and the adaptability to integrate a wide variety of devices and systems. Experience in this nascent field is revealing a rich array of for engineering decisions and the application of complexity theory. To test the decisions, computer simulations are used to reveal insights about design, demand elasticity, and the limits of response (including consumer fatigue). Agent-based approaches lend themselves well in the simulation to modeling the participation and interaction of each piece of equipment on a distribution feeder. This paper discusses rate design and simulation experiences at the distribution feeder level where consumers and their HVAC systems and water heaters on a feeder receive real-time pricing signals.

Widergren, Steven E.; Subbarao, Krishnappa; Chassin, David P.; Fuller, Jason C.; Pratt, Robert G.

2011-10-10T23:59:59.000Z

390

F.E. Warren Air Force Base Wind Farm | Open Energy Information  

Open Energy Info (EERE)

F.E. Warren Air Force Base Wind Farm F.E. Warren Air Force Base Wind Farm Jump to: navigation, search Name F.E. Warren Air Force Base Wind Farm Facility F.E. Warren Air Force Base Sector Wind energy Facility Type Community Wind Facility Status In Service Owner F.E. Warren Air Force Base Developer F.E. Warren Air Force Base Energy Purchaser F.E. Warren Air Force Base Location Near Cheyenne WY Coordinates 41.175569°, -104.880778° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.175569,"lon":-104.880778,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

391

Time varying, multivariate volume data reduction  

SciTech Connect

Large-scale supercomputing is revolutionizing the way science is conducted. A growing challenge, however, is understanding the massive quantities of data produced by large-scale simulations. The data, typically time-varying, multivariate, and volumetric, can occupy from hundreds of gigabytes to several terabytes of storage space. Transferring and processing volume data of such sizes is prohibitively expensive and resource intensive. Although it may not be possible to entirely alleviate these problems, data compression should be considered as part of a viable solution, especially when the primary means of data analysis is volume rendering. In this paper we present our study of multivariate compression, which exploits correlations among related variables, for volume rendering. Two configurations for multidimensional compression based on vector quantization are examined. We emphasize quality reconstruction and interactive rendering, which leads us to a solution using graphics hardware to perform on-the-fly decompression during rendering. In this paper we present a solution which addresses the need for data reduction in large supercomputing environments where data resulting from simulations occupies tremendous amounts of storage. Our solution employs a lossy encoding scheme to acrueve data reduction with several options in terms of rate-distortion behavior. We focus on encoding of multiple variables together, with optional compression in space and time. The compressed volumes can be rendered directly with commodity graphics cards at interactive frame rates and rendering quality similar to that of static volume renderers. Compression results using a multivariate time-varying data set indicate that encoding multiple variables results in acceptable performance in the case of spatial and temporal encoding as compared to independent compression of variables. The relative performance of spatial vs. temporal compression is data dependent, although temporal compression has the advantage of offering smooth animations, while spatial compression can handle volumes of larger dimensions.

Ahrens, James P [Los Alamos National Laboratory; Fout, Nathaniel [UC DAVIS; Ma, Kwan - Liu [UC DAVIS

2010-01-01T23:59:59.000Z

392

jul10_Times.indd  

NLE Websites -- All DOE Office Websites (Extended Search)

7 7 July 2010 www.y12.doe.gov/news/times.php P.O. Box 2009 Oak Ridge, TN 37831-8245 W H A T ' S I N S I D E Page 2 Want to know about Y-12's budget? Read what Darrel Kohlhorst said. Page 3 Y-12 employees get a LIFE Center Pages 4 and 5 Safeguards, Security and Emergency Services' Sentinel Page 6 Employees raise money for Relay for Life Page 8 Refl ections of Y-12's history B&W Technical Services Y-12, LLC, a partnership between Babcock & Wilcox Technical Services Group Inc. and Bechtel National Inc., operates the Y-12 National Security Complex. A newsletter for employees and friends of the Y-12 National Security Complex Managing Editors Amy Alley: alleyab@y12.doe.gov Heidi Spurling: spurlinghw@y12.doe.gov Layout Lisa Harris Contributors Mary Bryant Cynthia Ensor Ryn Etter

393

dec11-Times.indd  

NLE Websites -- All DOE Office Websites (Extended Search)

1 1 December 2011 www.y12.doe.gov/news/times.php P.O. Box 2009 Oak Ridge, TN 37831-8245 W H A T ' S I N S I D E Page 2 Governance Transformation at Y-12 Page 3 Employees bring benefi ts to life Pages 4 and 5 A healthy start to 2012 Page 6 A visit from Christmas past Page 8 Have a plan - just in case B&W Technical Services Y-12, LLC, a partnership between Babcock & Wilcox Technical Services Group Inc. and Bechtel National Inc., operates the Y-12 National Security Complex. A newsletter for employees and friends of the Y-12 National Security Complex Managing Editors Amy Alley: alleyab@y12.doe.gov Heidi Spurling: spurlinghw@y12.doe.gov Layout Lisa Harris Contributors Mary Bryant Ellen Boatner Ashley Douglas Kathy Fahey Scott Fraker John Holbrook David Keim Terry Marlar Jill McNutt

394

Variable residence time vortex combustor  

DOE Patents (OSTI)

A variable residence time vortex combustor including a primary combustion chamber for containing a combustion vortex, and a plurality of louvres peripherally disposed about the primary combustion chamber and longitudinally distributed along its primary axis. The louvres are inclined to impel air about the primary combustion chamber to cool its interior surfaces and to impel air inwardly to assist in driving the combustion vortex in a first rotational direction and to feed combustion in the primary combustion chamber. The vortex combustor also includes a second combustion chamber having a secondary zone and a narrowed waist region in the primary combustion chamber interconnecting the output of the primary combustion chamber with the secondary zone for passing only lower density particles and trapping higher density particles in the combustion vortex in the primary combustion chamber for substantial combustion.

Melconian, Jerry O. (76 Beaver Rd., Reading, MA 01867)

1987-01-01T23:59:59.000Z

395

1. First Time Designer's Guide  

E-Print Network (OSTI)

Altera provides various tools for development of hardware and software for embedded systems. This handbook complements the primary documentation for these tools by describing how to most effectively use some of these tools. It recommends design styles and practices for developing, debugging, and optimizing embedded systems using Altera-provided tools such as the Software Build Tools for Eclipse and SOPC Builder. The handbook introduces concepts to new users of Alteras embedded solutions, and helps to increase the design efficiency of the experienced user. This handbook is not a comprehensive reference guide. For general reference and detailed information, refer to the primary documentation cited in this handbook. This first chapter of the handbook contains information about the Altera embedded development process and procedures for the first time user. The remaining chapters focus on specific aspects of embedded development for Altera FPGAs. This handbook does not provide information about the Qsys system integration tool.

unknown authors

2011-01-01T23:59:59.000Z

396

Nonlinear Time-Reversal of Classical Waves: Experiment and Model  

E-Print Network (OSTI)

We consider time-reversal of electromagnetic waves in a closed, wave-chaotic system containing a discrete, passive, harmonic-generating nonlinearity. An experimental system is constructed as a time-reversal mirror, in which excitations generated by the nonlinearity are gathered, time-reversed, transmitted, and directed exclusively to the location of the nonlinearity. Here we show that such nonlinear objects can be purely passive (as opposed to the active nonlinearities used in previous work), and develop a high-rate secure communication system based on nonlinear time-reversal. A model of the experimental system is developed, using a star-graph network of transmission lines, with one of the lines terminated by a model diode. The model simulates time-reversal of linear and nonlinear signals, demonstrates features seen in the experimental system, and supports our interpretation of the experimental results.

Matthew Frazier; Biniyam Taddese; Bo Xiao; Thomas Antonsen; Edward Ott; Steven M. Anlage

2013-08-15T23:59:59.000Z

397

Project Based Energy Conservation vs. Management Based Energy Conservation  

E-Print Network (OSTI)

Basic American Foods (BAF) is the largest potato dehydrator worldwide. This paper will trace the shift from a Project Based to Management Based energy conservation program. Second only to raw material, energy is one of the highest expenses at BAF. Due to this fact, BAF started a corporation wide energy reduction program in 1999. The program was one full time project engineer focused only on energy reduction projects. This approach, called project based energy conservation, worked well for about 3 years. Total savings from energy reduction projects were equivalent to over 10% of the corporate profit. At that point entropy started to take over and the initial successes were reversing themselves. BAF then re-energized its energy initiative by setting a 5% per year energy reduction goal. The project based program could not achieve this goal. Therefore, the focus switched from project based to a management based energy conservation program.

Judy, K.; O'Brien, S.

2009-05-01T23:59:59.000Z

398

Reviewing real-time performance of nuclear reactor safety systems  

SciTech Connect

The purpose of this paper is to recommend regulatory guidance for reviewers examining real-time performance of computer-based safety systems used in nuclear power plants. Three areas of guidance are covered in this report. The first area covers how to determine if, when, and what prototypes should be required of developers to make a convincing demonstration that specific problems have been solved or that performance goals have been met. The second area has recommendations for timing analyses that will prove that the real-time system will meet its safety-imposed deadlines. The third area has description of means for assessing expected or actual real-time performance before, during, and after development is completed. To ensure that the delivered real-time software product meets performance goals, the paper recommends certain types of code-execution and communications scheduling. Technical background is provided in the appendix on methods of timing analysis, scheduling real-time computations, prototyping, real-time software development approaches, modeling and measurement, and real-time operating systems.

Preckshot, G.G. [Lawrence Livermore National Lab., CA (United States)

1993-08-01T23:59:59.000Z

399

Towards Integrated Verification of Timed Transition Models  

Science Conference Proceedings (OSTI)

This paper describes an attempt to combine theorem proving and model-checking to formally verify real-time systems in a discrete time setting. The Timed Automata Modeling Environment (TAME) has been modified to provide a formal model for Time Transition ... Keywords: PVS, Real-time, SAL, equivalence verification, model reduction, model-checking, theorem proving

Mark Lawford; Vera Pantelic; Hong Zhang

2006-04-01T23:59:59.000Z

400

Continuous Time Group Discovery in Dynamic Graphs  

Science Conference Proceedings (OSTI)

With the rise in availability and importance of graphs and networks, it has become increasingly important to have good models to describe their behavior. While much work has focused on modeling static graphs, we focus on group discovery in dynamic graphs. We adapt a dynamic extension of Latent Dirichlet Allocation to this task and demonstrate good performance on two datasets. Modeling relational data has become increasingly important in recent years. Much work has focused on static graphs - that is fixed graphs at a single point in time. Here we focus on the problem of modeling dynamic (i.e. time-evolving) graphs. We propose a scalable Bayesian approach for community discovery in dynamic graphs. Our approach is based on extensions of Latent Dirichlet Allocation (LDA). LDA is a latent variable model for topic modeling in text corpora. It was extended to deal with topic changes in discrete time and later in continuous time. These models were referred to as the discrete Dynamic Topic Model (dDTM) and the continuous Dynamic Topic Model (cDTM), respectively. When adapting these models to graphs, we take our inspiration from LDA-G and SSN-LDA, applications of LDA to static graphs that have been shown to effectively factor out community structure to explain link patterns in graphs. In this paper, we demonstrate how to adapt and apply the cDTM to the task of finding communities in dynamic networks. We use link prediction to measure the quality of the discovered community structure and apply it to two different relational datasets - DBLP author-keyword and CAIDA autonomous systems relationships. We also discuss a parallel implementation of this approach using Hadoop. In Section 2, we review LDA and LDA-G. In Section 3, we review the cDTM and introduce cDTMG, its adaptation to modeling dynamic graphs. We discuss inference for the cDTM-G and details of our parallel implementation in Section 4 and present its performance on two datasets in Section 5 before concluding in Section 6.

Miller, K; Eliassi-Rad, T

2010-11-04T23:59:59.000Z

Note: This page contains sample records for the topic "alt base time" 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

Automated Phase Design and Timing Adjustment for Signal Phase Design  

Science Conference Proceedings (OSTI)

In this paper we describe the design processes of human traffic engineers and the development of an automated system that solves the problem of timing adjustment in signal phase sequence design. i>Signal phase sequencing refers to the sequence of ... Keywords: automated design, case-based reasoning, signal phase design, traffic management

L. Wang; C. C. Hayes; R. R. Penner

2001-06-01T23:59:59.000Z

402

Estimating the Correlation Dimension of Atmospheric Time Series  

Science Conference Proceedings (OSTI)

The correlation dimension D is commonly used to quantify the chaotic structure of atmospheric time series. The standard algorithm for estimating the value of D is based on finding the slope of the curve obtained by plotting ln C(r) versus ln r, ...

Hampton N. Shirer; Christian J. Fosmire; Robert Wells; Laurentia Suciu

1997-01-01T23:59:59.000Z

403

ADWICE anomaly detection with real-time incremental clustering  

Science Conference Proceedings (OSTI)

Anomaly detection, detection of deviations from what is considered normal, is an important complement to misuse detection based on attack signatures. Anomaly detection in real-time places hard requirements on the algorithms used, making many proposed ... Keywords: adaptability, anomaly detection, clustering, intrusion detection, realtime

Kalle Burbeck; Simin Nadjm-Tehrani

2004-12-01T23:59:59.000Z

404

Real-Time Forecasting of Snowfall Using a Neural Network  

Science Conference Proceedings (OSTI)

A set of 53 snowfall reports was collected in real time from the 2004/05 and 2005/06 cold seasons (NovemberMarch). Three snowfall-amount forecast methods were tested: neural network, surface-temperature-based 676-USDT table, and climatological ...

Paul J. Roebber; Melissa R. Butt; Sarah J. Reinke; Thomas J. Grafenauer

2007-06-01T23:59:59.000Z

405

Real-time locomotion control by sensing gloves: Research Articles  

Science Conference Proceedings (OSTI)

Sensing gloves are often used as an input device for virtual 3D games. We propose a new method to control characters such as humans or animals in real-time by using sensing gloves. Based on existing motion data of the body, a new method to map the hand ... Keywords: 3D game, 3D user interface, Computer puppetry, Sensing glove

Taku Komura; Wai-Chun Lam

2006-12-01T23:59:59.000Z

406

Investigating asymptotic properties of vector nonlinear time series models  

Science Conference Proceedings (OSTI)

Analyses and simulations of vector nonlinear time series typically run into weeks or even months because the methods used are computationally intensive. Statisticians have been known to base empirical results on a relatively small number of simulation ... Keywords: Dynamic loop scheduling, Vector FCAR models

Ioana Banicescu; Ricolindo L. CariO; Jane L. Harvill; John Patrick Lestrade

2011-09-01T23:59:59.000Z

407

Time series of count data: modeling, estimation and diagnostics  

Science Conference Proceedings (OSTI)

Various models for time series of counts which can account for discreteness, overdispersion and serial correlation are compared. Besides observation- and parameter-driven models based upon corresponding conditional Poisson distributions, a dynamic ordered ... Keywords: Efficient importance sampling, Markov chain Monte Carlo, Observation-driven model, Ordered probit, Parameter-driven model

Robert C. Jung; Martin Kukuk; Roman Liesenfeld

2006-12-01T23:59:59.000Z

408

March 2009 Y-12 Times  

NLE Websites -- All DOE Office Websites (Extended Search)

3 3 March 2009 www.y12.doe.gov/news/times.php P.O. Box 2009 Oak Ridge, TN 37831-8245 Managing Editors Amy Alley: alleyab@y12.doe.gov Heidi Spurling: spurlinghw@y12.doe.gov Layout/Design Lisa Harris Contributors Ellen Boatner Ken Davis Kathy Fahey Vicki Hinkel Jamie Loveday Mary Murray W H A T ' S I N S I D E W H A T ' S I N S I D E Page 2 Page 2 New UPF room is out of sight Page 3 Page 3 Training simulates terrorist attack, prepares fi rst responders Page 3 Page 3 Tanker cars on the right track Page 5 Page 5 Third-generation employee follows his father's sage advice Page 7 Page 7 Car enthusiasts go into overdrive Brett Pate Ray Smith Donna Watson Mona Wright Lisa Xiques B&W Technical Services Y-12, LLC, a partnership between Babcock & Wilcox Technical Services Group Inc. and Bechtel National Inc., operates the

409

Probabilistic timing analysis on conventional cache designs  

Science Conference Proceedings (OSTI)

Probabilistic timing analysis (PTA), a promising alternative to traditional worst-case execution time (WCET) analyses, enables pairing time bounds (named probabilistic WCET or pWCET) with an exceedance probability (e.g., 10-16), resulting ...

Leonidas Kosmidis, Charlie Curtsinger, Eduardo Quiones, Jaume Abella, Emery Berger, Francisco J. Cazorla

2013-03-01T23:59:59.000Z

410

BASE - Rad Effects - Cyclotron  

NLE Websites -- All DOE Office Websites (Extended Search)

Effects Effects About the BASE Facility The BASE Facility operates in conjunction with the 88-inch Cyclotron at Lawrence Berkeley National Laboratory to provide beams of protons and heavy ions for radiation effects testing. When running, the facility is manned 24-hours a day with additional support on call. Assistance is available for shipping and receiving. Contact us for current hourly rates. Bragg curve plots, published papers, and other useful information are available here on our website. For information on the experiment approval process, beam time scheduling, or technical details on beamline setup and operation, contact Mike Johnson at (510) 486-4389 or MBJohnson@lbl.gov. More information is available here: Protons (Cave 4A) Heavy Ions (Cave 4B) Neutrons (Cave 0)

411

Java Automation Controller and Real-Time Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Java Automation Controller and Real-Time Systems Java Automation Controller and Real-Time Systems Speaker(s): Greg Bollella Date: June 29, 2009 - 12:00pm Location: 90-3122 Java has always been a disruptive technology and now it is breaking the mold in industrial, process, building, and transportation automation systems. For many years, programmable logic controllers (PLCs), the digital versions of old relay-based control systems (such as that used in the NYC Subway system in the late 1800s) have primarily controlled these systems. PLCs are the workhorses of the controls industry but the market is characterized by proprietary, closed, expensive, special-purpose solutions. A Java-based automation controller breaks the mold by allowing control algorithms, which require strict real-time capabilities, to run on

412

Nanosecond time resolved thermal emission measurements during...  

NLE Websites -- All DOE Office Websites (Extended Search)

Nanosecond time resolved thermal emission measurements during pulse excimer laser interaction with materials Title Nanosecond time resolved thermal emission measurements during...

413

Training Reciprocity Achieves Greater Consistency, Saves Time...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Training Reciprocity Achieves Greater Consistency, Saves Time and Money for Idaho, Other DOE Sites Training Reciprocity Achieves Greater Consistency, Saves Time and Money for...

414

Time Trends in Dutch Children's Mental Health.  

E-Print Network (OSTI)

??This study investigated time trends in Dutch children's and adolescent's mental health problems by comparing population samples from different time periods. From 1983 to 2003, (more)

Tick, N.T.

2007-01-01T23:59:59.000Z

415

Spatial diversity in passive time reversal communications  

E-Print Network (OSTI)

Song et al. : Spatial diversity in passive time reversaland J. Ritcey, Spatial diversity equalization applied toSpatial diversity in passive time reversal communications H.

2006-01-01T23:59:59.000Z

416

Undergraduate Program Time Limits and Work Schedules  

NLE Websites -- All DOE Office Websites (Extended Search)

Time Limits and Work Schedules Undergraduate Program Time Limits and Work Schedules Point your career towards LANL: work with the best minds on the planet in an inclusive...

417

Real time markerless motion tracking using linked kinematic chains  

DOE Patents (OSTI)

A markerless method is described for tracking the motion of subjects in a three dimensional environment using a model based on linked kinematic chains. The invention is suitable for tracking robotic, animal or human subjects in real-time using a single computer with inexpensive video equipment, and does not require the use of markers or specialized clothing. A simple model of rigid linked segments is constructed of the subject and tracked using three dimensional volumetric data collected by a multiple camera video imaging system. A physics based method is then used to compute forces to align the model with subsequent volumetric data sets in real-time. The method is able to handle occlusion of segments and accommodates joint limits, velocity constraints, and collision constraints and provides for error recovery. The method further provides for elimination of singularities in Jacobian based calculations, which has been problematic in alternative methods.

Luck, Jason P. (Arvada, CO); Small, Daniel E. (Albuquerque, NM)

2007-08-14T23:59:59.000Z

418

Evaluation Framework for Sustainable Demand Response Implementations: A Framework for Evaluating Demand Response Implementation Alte rnatives for Sustainability  

Science Conference Proceedings (OSTI)

This report presents a framework for evaluating demand response (DR) implementation options with the goal of achieving long-term sustainability. Effective implementation of DR can help reduce energy price volatility and maintain or improve service reliability. The DR evaluation framework provides a structured, systematic approach to help utility personnel and other stakeholders in planning and comparing demand response options, toward the goal of implementing sustainable DR programs that support utility ...

2011-12-30T23:59:59.000Z

419

Renewable and alteRnative eneRgy Fact Sheet College of Agricultural Sciences Agricultural Research and Cooperative Extension  

E-Print Network (OSTI)

the performance you can expect when running an engine on biodiesel. Properties of biodiesel versus Petroleum Research and Cooperative Extension What's So Different about Biodiesel Fuel? 1. If the biodiesel is made"(FAEE). introduction Biodiesel is a liquid fuel that is created by chemically process- ing vegetable oil and altering

Boyer, Elizabeth W.

420

The effect of the AltSB gene on root growth in nutrient solution of isogenic sorghum hybrids  

E-Print Network (OSTI)

Pp. 92-93 International Sorghum Workshop, 1975. Universityfor aluminum tolerance in sorghum. Theoretical and Appliedaluminum tolerance in sorghum. Nature Genetics, London,

Schaffert, Robert E; Silva, Lidianne A; Alves, Vera M.C.; Carvalho, Geraldo A. Jr.; Magalhes, Jurandir V

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "alt base time" 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

Timed CSP: A Retrospective Joel Ouaknine 1  

E-Print Network (OSTI)

APC 2005 Timed CSP: A Retrospective Jo¨el Ouaknine 1 Oxford University Computing Laboratory, UK Timed CSP, from its inception nearly twenty years ago to very recent semantical and algorithmic developments. Key words: Process algebra, Timed CSP. Timed CSP was first proposed in 1986 by Reed and Roscoe

Schneider, Steve

422

A review on time series data mining  

Science Conference Proceedings (OSTI)

Time series is an important class of temporal data objects and it can be easily obtained from scientific and financial applications. A time series is a collection of observations made chronologically. The nature of time series data includes: large in ... Keywords: Representation, Segmentation, Similarity measure, Time series data mining, Visualization

Tak-chung Fu

2011-02-01T23:59:59.000Z

423

Real-Time Airborne Particle Analyzer  

Geology, biology, and environmental science HAZMAT Weapons inspection : Real-time method for measuring elemental composition

424

Time Constant Estimates for Radiosonde Temperature Sensors  

Science Conference Proceedings (OSTI)

To correct time lag errors in radiosonde temperatures the sensor time constant has to be known. Time constants are not published for some widely used sensors and, in some cases, available time constants disagree. This study focuses on ML-405, ML-...

Marcel E. Tschudin; Steven R. Schroeder

2013-01-01T23:59:59.000Z

425

MCS Division researchers awarded INCITE supercomputing time | Argonne  

NLE Websites -- All DOE Office Websites (Extended Search)

awarded INCITE supercomputing time awarded INCITE supercomputing time November 21, 2013 Tweet EmailPrint Three researchers in the Mathematics and Computer Science Division at Argonne lead projects that have been awarded a total of 285 million hours of computing time on the U.S. Department of Energy (DOE) leadership-class computing facilities. Using the computer allotments, the researchers will conduct advanced simulation and analysis and will develop scalable system software needed to fully utilize the power of leadership-class computing facilities. The projects, selected competitively based on their potential to advance scientific discovery, were awarded the supercomputer time through the DOE Innovative and Novel Computational Impact on Theory and Experiment (INCITE) program. Salman Habib, a senior physicist and computational scientist and member of

426

A comparison of high-order time integrators for thermal convection in rotating spherical shells  

Science Conference Proceedings (OSTI)

A numerical study of several time integration methods for solving the three-dimensional Boussinesq thermal convection equations in rotating spherical shells is presented. Implicit and semi-implicit time integration techniques based on backward differentiation ... Keywords: Backward differentiation-extrapolation formulae, Krylov methods, Spectral methods, Spherical shells, Thermal convection, Time integration methods

F. Garcia; M. Net; B. Garca-Archilla; J. Snchez

2010-10-01T23:59:59.000Z

427

Using semiclassical trajectories for the time-evolution of interacting quantum-mechanical systems  

Science Conference Proceedings (OSTI)

We have developed a method that recasts the time-propagation of dynamic, mutually interacting quantum-mechanical wavefunctions principally as the time-evolution of many classical particles. Our approach utilizes an approximation of Feynman path integrals, ... Keywords: Feynman, WKB, grid method, interacting, lagrangian, parallel computation, particle-based, path integral, plasma PIC, quantum particle-in-cell, semiclassical, stationary phase, time evolving

D. E. Dauger; V. K. Decyk; J. M. Dawson

2005-11-01T23:59:59.000Z

428

Release Time Scheduling and Hub Location for Next-Day Delivery  

Science Conference Proceedings (OSTI)

Inspired by a real-life problem faced by one of the largest ground-based cargo companies of Turkey, the current study introduces a new facet to the hub location literature. The release time scheduling and hub location problem aims to select a specified ... Keywords: cargo delivery, hub location, release times, time definite delivery, valid inequalities

Hande Yaman; Oya Ekin Karasan; Bahar Y. Kara

2012-07-01T23:59:59.000Z

429

Mobile one-time passwords: two-factor authentication using mobile phones  

Science Conference Proceedings (OSTI)

Static password authentication has security drawbacks. In two-factor authentication (2FA,) each user carries a device, called token, to generate passwords that are valid only one time. 2FA based on one-time passwords (OTPs) provides improved protection ... Keywords: nested hashing chain, one-time password, two-factor authentication

Mohamed Hamdy Eldefrawy; Muhammad Khurram Khan; Khaled Alghathbar; Tai-Hoon Kim; Hassan Elkamchouchi

2012-05-01T23:59:59.000Z

430

Visualization and exploration of time-varying medical image data sets  

Science Conference Proceedings (OSTI)

In this work, we propose and compare several methods for the visualization and exploration of time-varying volumetric medical images based on the temporal characteristics of the data. The principle idea is to consider a time-varying data set as a 3D ... Keywords: medical imaging, multi-dimensional scaling, time-varying data, transfer function, volume rendering

Zhe Fang; Torsten Mller; Ghassan Hamarneh; Anna Celler

2007-05-01T23:59:59.000Z

431

Patterns for Automatic Generation of Soft Real-time System Models  

Science Conference Proceedings (OSTI)

Worst-case assumptions about the timing of systems are often too conservative when analyzing distributed soft real-time systems as they lead to over-dimensioned and expensive products. For these systems, a certain percentage of deadline misses is often ... Keywords: Modeling patterns, pattern-based system description, soft real-time systems, stochastic model

Oana Florescu; Jeroen Voeten; Bart Theelen; Henk Corporaal

2009-11-01T23:59:59.000Z

432

FM-based indoor localization  

Science Conference Proceedings (OSTI)

The major challenge for accurate fingerprint-based indoor localization is the design of robust and discriminative wireless signatures. Even though WiFi RSSI signatures are widely available indoors, they vary significantly over time and are susceptible ... Keywords: fingerprinting, fm, localization, mobile systems, wireless

Yin Chen; Dimitrios Lymberopoulos; Jie Liu; Bodhi Priyantha

2012-06-01T23:59:59.000Z

433

TANK 21 AND TANK 24 BLEND AND FEED STUDY: BLENDING TIMES, SETTLING TIMES, AND TRANSFERS  

SciTech Connect

The Salt Disposition Integration (SDI) portfolio of projects provides the infrastructure within existing Liquid Waste facilities to support the startup and long term operation of the Salt Waste Processing Facility (SWPF). Within SDI, the Blend and Feed Project will equip existing waste tanks in the Tank Farms to serve as Blend Tanks where salt solutions of up to 1.2 million gallons will be blended in 1.3 million gallon tanks and qualified for use as feedstock for SWPF. In particular, Tanks 21 and 24 are planned to be used for blending and transferring to the SDI feed tank. These tanks were evaluated here to determine blending times, to determine a range of settling times for disturbed sludge, and to determine that the SWPF Waste Acceptance Criteria that less than 1200 mg/liter of solids will be entrained in salt solutions during transfers from the Tank 21 and Tank 24 will be met. Overall conclusions for Tank 21 and Tank 24 operations include: (1) Experimental correction factors were applied to CFD (computational fluid dynamics) models to establish blending times between approximately two and five hours. As shown in Phase 2 research, blending times may be as much as ten times greater, or more, if lighter fluids are added to heavier fluids (i.e., water added to salt solution). As the densities of two salt solutions converge this effect may be minimized, but additional confirmatory research was not performed. (2) At the current sludge levels and the presently planned operating heights of the transfer pumps, solids entrainment will be less than 1200 mg/liter, assuming a conservative, slow settling sludge simulant. (3) Based on theoretical calculations, particles in the density range of 2.5 to 5.0 g/mL must be greater than 2-4 {micro}m in diameter to ensure they settle adequately in 30-60 days to meet the SWPF feed criterion (<1200 mg/l). (4) Experimental tests with sludge batch 6 simulant and field turbidity data from a recent Tank 21 mixing evolution suggest the solid particles have higher density and/or larger size than indicated by previous analysis of SRS sludge and sludge simulants. (5) Tank 21 waste characterization, laboratory settling tests, and additional field turbidity measurements during mixing evolutions are recommended to better understand potential risk for extended (> 60 days) settling times in Tank 21.

Lee, S.; Leishear, R.; Poirier, M.

2012-05-31T23:59:59.000Z

434

Real-time Pricing Demand Response in Operations  

Science Conference Proceedings (OSTI)

AbstractDynamic pricing schemes have been implemented in commercial and industrial application settings, and recently they are getting attention for application to residential customers. Time-of-use and critical-peak-pricing rates are in place in various regions and are being piloted in many more. These programs are proving themselves useful for balancing energy during peak periods; however, real-time (5 minute) pricing signals combined with automation in end-use systems have the potential to deliver even more benefits to operators and consumers. Besides system peak shaving, a real-time pricing system can contribute demand response based on the locational marginal price of electricity, reduce load in response to a generator outage, and respond to local distribution system capacity limiting situations. The US Department of Energy (DOE) is teaming with a mid-west electricity service provider to run a distribution feeder-based retail electricity market that negotiates with residential automation equipment and clears every 5 minutes, thus providing a signal for lowering or raising electric consumption based on operational objectives of economic efficiency and reliability. This paper outlines the capability of the real-time pricing system and the operational scenarios being tested as the system is rolled-out starting in the first half of 2012.

Widergren, Steven E.; Marinovici, Maria C.; Berliner, Teri; Graves, Alan

2012-07-26T23:59:59.000Z

435

Multiple output timing and trigger generator  

SciTech Connect

In support of the development of a multiple stage pulse modulator at the Los Alamos National Laboratory, we have developed a first generation, multiple output timing and trigger generator. Exploiting Commercial Off The Shelf (COTS) Micro Controller Units (MCU's), the timing and trigger generator provides 32 independent outputs with a timing resolution of about 500 ns. The timing and trigger generator system is comprised of two MCU boards and a single PC. One of the MCU boards performs the functions of the timing and signal generation (the timing controller) while the second MCU board accepts commands from the PC and provides the timing instructions to the timing controller. The PC provides the user interface for adjusting the on and off timing for each of the output signals. This system provides 32 output or timing signals which can be pre-programmed to be in an on or off state for each of 64 time steps. The width or duration of each of the 64 time steps is programmable from 2 {micro}s to 2.5 ms with a minimum time resolution of 500 ns. The repetition rate of the programmed pulse train is only limited by the time duration of the programmed event. This paper describes the design and function of the timing and trigger generator system and software including test results and measurements.

Wheat, Robert M. [Los Alamos National Laboratory; Dale, Gregory E [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

436

Does Daylight Savings Time Affect Traffic Accidents?  

E-Print Network (OSTI)

This paper studies the effect of changes in accident pattern due to Daylight Savings Time (DST). The extension of the DST in 2007 provides a natural experiment to determine whether the number of traffic accidents is affected by shifts in hours of daylight using the year as control group. Using data on traffic accidents in Texas based on crash reports provided by the Texas Transportation Institute, and a difference in differences technique, this study creates a regression model to determine how significant this factor is in affecting traffic accident patterns as observed in the data. Results show that DST has no statistically significant effect on traffic accidents of all categories including (but not limited to) highway, non-highway, and accidents, accidents with injuries and no injuries, and accidents by drivers of all age-groups. This implies that the federal governments policy of DST (and its extension) has no costs incurred by a rise in motor vehicle crashes when it gets dark early.

Deen, Sophia 1988-

2012-05-01T23:59:59.000Z

437

Time-Mode Analog Circuit Design for Nanometric Technologies  

E-Print Network (OSTI)

Rapid scaling in technology has introduced new challenges in the realm of traditional analog design. Scaling of supply voltage directly impacts the available voltage-dynamic-range. On the other hand, nanometric technologies with fT in the hundreds of GHz range open opportunities for time-resolution-based signal processing. With reduced available voltage-dynamic-range and improved timing resolution, it is more convenient to devise analog circuits whose performance depends on edge-timing precision rather than voltage levels. Thus, instead of representing the data/information in the voltage-mode, as a difference between two node voltages, it should be represented in time-mode as a time-difference between two rising and/or falling edges. This dissertation addresses the feasibility of employing time-mode analog circuit design in different applications. Specifically: 1) Time-mode-based quanitzer and feedback DAC of SigmaDelta ADC. 2) Time-mode-based low-THD 10MHz oscillator, 3) A Spur-Frequency Boosting PLL with -74dBc Reference-Spur Rejection in 90nm Digital CMOS. In the first project, a new architectural solution is proposed to replace the DAC and the quantizer by a Time-to-Digital converter. The architecture has been fabricated in 65nm and shows that this technology node is capable of achieving a time-matching of 800fs which has never been reported. In addition, a competitive figure-of-merit is achieved. In the low-THD oscillator, I proposed a new architectural solution for synthesizing a highly-linear sinusoidal signal using a novel harmonic rejection approach. The chip is fabricated in 130nm technology and shows an outstanding performance compared to the state of the art. The designed consumes 80% less power; consumes less area; provides much higher amplitude while being composed of purely digital circuits and passive elements. Last but not least, the spur-frequency boosting PLL employs a novel technique that eliminates the reference spurs. Instead of adding additional filtering at the reference frequency, the spur frequency is boosted to higher frequency which is, naturally, has higher filtering effects. The prototype is fabricated in 90nm digital CMOS and proved to provide the lowest normalized reference spurs ever reported.

Elsayed, Mohamed

2011-12-01T23:59:59.000Z

438

Time-of-flight radio location system  

DOE Patents (OSTI)

A bi-static radar configuration measures the direct time-of-flight of a transmitted RF pulse and is capable of measuring this time-of-flight with a jitter on the order of about one pico-second, or about 0.01 inch of free space distance for an electromagnetic pulse over a range of about one to ten feet. A transmitter transmits a sequence of electromagnetic pulses in response to a transmit timing signal, and a receiver samples the sequence of electromagnetic pulses with controlled timing in response to a receive timing signal, and generates a sample signal in response to the samples. A timing circuit supplies the transmit timing signal to the transmitter and supplies the receive timing signal to the receiver. The receive timing signal causes the receiver to sample the sequence of electromagnetic pulses such that the time between transmission of pulses in the sequence and sampling by the receiver sweeps over a range of delays. The receive timing signal sweeps over the range of delays in a sweep cycle such that pulses in the sequence are sampled at the pulse repetition rate, and with different delays in the range of delays to produce a sample signal representing magnitude of a received pulse in equivalent time. Automatic gain control circuitry in the receiver controls the magnitude of the equivalent time sample signal. A signal processor analyzes the sample signal to indicate the time-of-flight of the electromagnetic pulses in the sequence.

McEwan, Thomas E. (Livermore, CA)

1996-01-01T23:59:59.000Z

439

Time-of-flight radio location system  

DOE Patents (OSTI)

A bi-static radar configuration measures the direct time-of-flight of a transmitted RF pulse and is capable of measuring this time-of-flight with a jitter on the order of about one pico-second, or about 0.01 inch of free space distance for an electromagnetic pulse over a range of about one to ten feet. A transmitter transmits a sequence of electromagnetic pulses in response to a transmit timing signal, and a receiver samples the sequence of electromagnetic pulses with controlled timing in response to a receive timing signal, and generates a sample signal in response to the samples. A timing circuit supplies the transmit timing signal to the transmitter and supplies the receive timing signal to the receiver. The receive timing signal causes the receiver to sample the sequence of electromagnetic pulses such that the time between transmission of pulses in the sequence and sampling by the receiver sweeps over a range of delays. The receive timing signal sweeps over the range of delays in a sweep cycle such that pulses in the sequence are sampled at the pulse repetition rate, and with different delays in the range of delays to produce a sample signal representing magnitude of a received pulse in equivalent time. Automatic gain control circuitry in the receiver controls the magnitude of the equivalent time sample signal. A signal processor analyzes the sample signal to indicate the time-of-flight of the electromagnetic pulses in the sequence. 7 figs.

McEwan, T.E.

1996-04-23T23:59:59.000Z

440

Real Time Flame Monitoring of Gasifier Burner and Injectors  

NLE Websites -- All DOE Office Websites (Extended Search)

Real Time Flame Monitoring of Gasifier Real Time Flame Monitoring of Gasifier Burner and Injectors Background The Gasification Technologies Program at the National Energy Technology Laboratory (NETL) supports research and development (R&D) in the area of gasification-a process whereby carbon-based materials (feedstocks) such as coal are converted into synthesis gas (syngas), which is separated into hydrogen (H 2 ) and carbon dioxide (CO 2 ) gas streams in a combustion turbine-generator as a way to generate clean electricity while

Note: This page contains sample records for the topic "alt base time" 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.


441

Energy-efficient algorithms for flow time minimization  

E-Print Network (OSTI)

We study scheduling problems in battery-operated computing devices, aiming at schedules with low total energy consumption. While most of the previous work has focused on finding feasible schedules in deadline-based settings, in this paper we are interested in schedules that guarantee good response times. More specifically, our goal is to schedule a sequence of jobs on a variable speed processor so as to minimize the total cost consisting of the energy consumption and the total flow time of all the jobs.

Susanne Albers

2006-01-01T23:59:59.000Z

442

Energy current imaging method for time reversal in elastic media  

SciTech Connect

An energy current imaging method is presented for use in locating sources of wave energy during the back propagation stage of the time reversal process. During the back propagation phase of an ideal time reversal experiment, wave energy coalesces from all angles of incidence to recreate the source event; after the recreation, wave energy diverges in every direction. An energy current imaging method based on this convergence/divergence behavior has been developed. The energy current imaging method yields a smaller spatial distribution for source reconstruction than is possible with traditional energy imaging methods.

Anderson, Brian E [Los Alamos National Laboratory; Ulrich, Timothy J [Los Alamos National Laboratory; Le Bas, Pierre - Yves A [Los Alamos National Laboratory; Larmat, Carene [Los Alamos National Laboratory; Johnson, Paul A [Los Alamos National Laboratory; Guyer, Robert A [UNR; Griffa, Michele [ETH ZURICH

2009-01-01T23:59:59.000Z

443

Climatological Time Series with Periodic Correlation  

Science Conference Proceedings (OSTI)

Many climatological time series display a periodic correlation structure. This paper examines three issues encountered when analyzing such time series: detection of periodic correlation, modeling periodic correlation, and trend estimation under ...

Robert Lund; Harry Hurd; Peter Bloomfield; Richard Smith

1995-11-01T23:59:59.000Z

444

Statistical Timing Analysis using Levelized Covariance Propagation  

Science Conference Proceedings (OSTI)

Variability in process parameters is making accurate timing analysis of nano-scale integrated circuits an extremely challenging task. In this paper, we propose a new algorithm for statistical timing analysis using Levelized Covariance Propagation (LCP). ...

Kunhyuk Kang; Bipul C. Paul; Kaushik Roy

2005-03-01T23:59:59.000Z

445

Statistical characterization of library timing performance  

Science Conference Proceedings (OSTI)

With the scaling of technology, the variability of timing performances of digital circuits is increasing. In this paper, we propose a first order analytical modeling of the standard deviations of basic CMOS cell timings. The proposed model is then used ...

V. Migairou; R. Wilson; S. Engels; N. Azemard; P. Maurine

2006-09-01T23:59:59.000Z

446

Phoenix: an epidemic approach to time reconstruction  

Science Conference Proceedings (OSTI)

Harsh deployment environments and uncertain run-time conditions create numerous challenges for postmortem time reconstruction methods. For example, motes often reboot and thus lose their clock state, considering that the majority of mote platforms lack ...

Jayant Gupchup; Douglas Carlson; R?zvan Mus?loiu-E.; Alex Szalay; Andreas Terzis

2010-02-01T23:59:59.000Z

447

Graduate Program Time Limits and Work Schedules  

NLE Websites -- All DOE Office Websites (Extended Search)

Time Limits and Work Schedules Graduate Program Time Limits and Work Schedules Point your career towards LANL: work with the best minds on the planet in an inclusive environment...

448

Space does not exist, so time can  

E-Print Network (OSTI)

It is often said that in general relativity time does not exist. This is because the Einstein equations generate motion in time that is a symmetry of the theory, not true time evolution. In quantum gravity, the timelessness of general relativity clashes with time in quantum theory and leads to the ``problem of time'' which, in its various forms, is the main obstacle to a successful quantum theory of gravity. I argue that the problem of time is a paradox, stemming from an unstated faulty premise. Our faulty assumption is that space is real. I propose that what does not fundamentally exist is not time but space, geometry and gravity. The quantum theory of gravity will be spaceless, not timeless. If we are willing to throw out space, we can keep time and the trade is worth it.

Fotini Markopoulou

2009-09-10T23:59:59.000Z

449

OPTIMIZATION OF RUNNING STRATEGIES BASED ON ...  

E-Print Network (OSTI)

determine his speed in order to run a given distance in the shortest time. ... based on the equation of motion and aerobic energy, to include a balance of ..... associated cost converges to the one associated with ? . The conclusion follows.

450

Tornado Detection Based on Seismic Signal  

Science Conference Proceedings (OSTI)

At the present time the only generally accepted method for detecting when a tornado is on the ground is human observation. Based on theoretical considerations combined with eyewitness testimony, there is strong reason to believe that a tornado in ...

Frank B. Tatom; Kevin R. Knupp; Stanley J. Vitton

1995-02-01T23:59:59.000Z

451

EOF-Based Linear Prediction Algorithm: Theory  

Science Conference Proceedings (OSTI)

This study considers the theory of a general three-dimensional (space and time) statistical prediction/extrapolation algorithm. The predictor is in the form of a linear data filter. The prediction kernel is based on the minimization of prediction ...

Kwang-Y. Kim; Gerald R. North

1998-11-01T23:59:59.000Z

452

A T-EOF Based Prediction Method  

Science Conference Proceedings (OSTI)

A new statistical time series prediction method based on temporal empirical orthogonal function (T-EOF) is introduced in this study. This method first applies singular spectrum analysis (SSA) to extract dominant T-EOFs from historical data. Then, ...

Yung-An Lee

2002-01-01T23:59:59.000Z

453

Large-Alphabet Time-Frequency Entangled Quantum Key Distribution by means of Time-to-Frequency Conversion  

E-Print Network (OSTI)

We introduce a novel time-frequency quantum key distribution (TFQKD) scheme based on photon pairs entangled in these two conjugate degrees of freedom. The scheme uses spectral detection and phase modulation to enable measurements in the temporal basis by means of time-to-frequency conversion. This allows large-alphabet encoding to be implemented with realistic components. A general security analysis for TFQKD with binned measurements reveals a close connection with finite-dimensional QKD protocols and enables analysis of the effects of dark counts on the secure key size.

J. Nunn; L. Wright; C. Sller; L. Zhang; I. A. Walmsley; B. J. Smith

2013-05-04T23:59:59.000Z

454

Twistor superstring in two-time physics  

SciTech Connect

By utilizing the gauge symmetries of two-time physics (2T physics), a superstring with linearly realized global SU(2,2|4) supersymmetry in 4+2 dimensions (plus internal degrees of freedom) is constructed. It is shown that the dynamics of the Witten-Berkovits twistor superstring in 3+1 dimensions emerges as one of the many one-time (1T) holographic pictures of the 4+2 dimensional string obtained via gauge fixing of the 2T gauge symmetries. In 2T physics the twistor language can be transformed to usual spacetime language and vice versa, off shell, as different gauge fixings of the same 2T string theory. Further holographic string pictures in 3+1 dimensions that are dual theories also can be derived. The 2T superstring is further generalized in the SU(4)=SO(6) sector of SU(2,2|4) by the addition of six bosonic dimensions, for a total of 10+2 dimensions. Excitations of the extra bosons produce a SU(2,2|4) current algebra spectrum that matches the classification of the high-spin currents of N=4, d=4 super Yang-Mills theory which are conserved in the weak coupling limit. This spectrum is interpreted as the extension of the SU(2,2|4) classification of the Kaluza-Klein towers of typeII-B supergravity compactified on AdS{sub 5}xS{sup 5}, into the full string theory, and is speculated to have a covariant 10+2 origin in F-theory or S-theory. Further generalizations of the superstring theory to 3+2, 5+2, and 6+2 dimensions based on the supergroups OSp(8|4), F(4), OSp(8{sup *}|4), respectively, and other cases, are discussed also. The OSp(8{sup *}|4) case in 6+2 dimensions can be gauge fixed to 5+1 dimensions to provide a formulation of the special superconformal theory in six dimensions either in terms of ordinary spacetime or in terms of twistors.

Bars, Itzhak [Department of Physics and Astronomy, University of Southern California, Los Angeles, California 90089-2535 (United States)

2004-11-15T23:59:59.000Z

455

Precision Timing for Smart Grid Systems  

Science Conference Proceedings (OSTI)

... how new features and requirements for time synchronization can impact the performance of next-generation power distribution applications. ...

2013-04-29T23:59:59.000Z

456

Scalable Time Warp on Blue Gene Supercomputers  

Science Conference Proceedings (OSTI)

n this paper we illustrate scalable parallel performance for the TimeWarp synchronization protocol on the L and P variants of the IBM BlueGene supercomputer. Scalable Time Warp performance for models that communicate a large percentage of the event population ... Keywords: Time Warp, Blue Gene Supercomputer

David W. Bauer Jr.; Christopher D. Carothers; Akintayo Holder

2009-06-01T23:59:59.000Z

457

Microsecond delays on non-real time operating systems  

SciTech Connect

We have developed microsecond timing and profiling software that runs on standard Windows and Linux based operating systems. This software is orders of magnitudes better than most of the standard native functions in wide use. Our software libraries calibrate RDTSC in microseconds or seconds to provide two different types of delays: a ''Guaranteed Minimum'' and a precision ''Long Delay'', which releases to the kernel. Both return profiling information of the actual delay.

Angstadt, R.; Estrada, J.; Diehl, H.T.; Flaugher, B.; Johnson, M.; /Fermilab

2007-05-01T23:59:59.000Z

458

A Tutorial on Time-Evolving Dynamical Bayesian Inference  

E-Print Network (OSTI)

We present a tutorial for Bayesian inference of time-evolving coupled systems in the presence of noise. It includes the necessary theoretical description and the algorithms for its implementation. For general programming purposes, a pseudocode description is given. Examples based on coupled phase and limit-cycle oscillators illustrate the most important features. Codes written in MatLab for the method and the examples accompany the tutorial.

Stankovski, Tomislav; McClintock, Peter V E; Stefanovska, Aneta

2013-01-01T23:59:59.000Z

459

A Tutorial on Time-Evolving Dynamical Bayesian Inference  

E-Print Network (OSTI)

We present a tutorial for Bayesian inference of time-evolving coupled systems in the presence of noise. It includes the necessary theoretical description and the algorithms for its implementation. For general programming purposes, a pseudocode description is given. Examples based on coupled phase and limit-cycle oscillators illustrate the most important features. Codes written in MatLab for the method and the examples accompany the tutorial.

Tomislav Stankovski; Andrea Duggento; Peter V. E. McClintock; Aneta Stefanovska

2013-04-30T23:59:59.000Z

460

Time-of-flight radio location system  

DOE Patents (OSTI)

A bi-static radar configuration measures the direct time-of-flight of a transmitted RF pulse and is capable of measuring this time-of-flight with a jitter on the order of about one pico-second, or about 0.01 inch of free space distance for an electromagnetic pulse over a range of about one to ten feet. A transmitter transmits a sequence of electromagnetic pulses in response to a transmit timing signal, and a receiver samples the sequence of electromagnetic pulses with controlled timing in response to a receive timing signal, and generates a sample signal in response to the samples. A timing circuit supplies the transmit timing signal to the transmitter and supplies the receive timing signal to the receiver. The receive timing signal causes the receiver to sample the sequence of electromagnetic pulses such that the time between transmission of pulses in the sequence and sampling by the receiver sweeps over a range of delays. The receive timing signal sweeps over the range of delays in a sweep cycle such that pulses in the sequence are sampled at the pulse repetition rate, and with different delays in the range of delays to produce a sample signal representing magnitude of a received pulse in equivalent time. Automatic gain control circuitry in the receiver controls the magnitude of the equivalent time sample signal. A signal processor analyzes the sample signal to indicate the time-of-flight of the electromagnetic pulses in the sequence. The sample signal in equivalent time is passed through an envelope detection circuit, formed of an absolute value circuit followed by a low pass filter, to convert the sample signal to a unipolar signal to eliminate effects of antenna misorientation.

McEwan, Thomas E. (Livermore, CA)

1997-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "alt base time" 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

Time-of-flight radio location system  

DOE Patents (OSTI)

A bi-static radar configuration measures the direct time-of-flight of a transmitted RF pulse and is capable of measuring this time-of-flight with a jitter on the order of about one pico-second, or about 0.01 inch of free space distance for an electromagnetic pulse over a range of about one to ten feet. A transmitter transmits a sequence of electromagnetic pulses in response to a transmit timing signal, and a receiver samples the sequence of electromagnetic pulses with controlled timing in response to a receive timing signal, and generates a sample signal in response to the samples. A timing circuit supplies the transmit timing signal to the transmitter and supplies the receive timing signal to the receiver. The receive timing signal causes the receiver to sample the sequence of electromagnetic pulses such that the time between transmission of pulses in the sequence and sampling by the receiver sweeps over a range of delays. The receive timing signal sweeps over the range of delays in a sweep cycle such that pulses in the sequence are sampled at the pulse repetition rate, and with different delays in the range of delays to produce a sample signal representing magnitude of a received pulse in equivalent time. Automatic gain control circuitry in the receiver controls the magnitude of the equivalent time sample signal. A signal processor analyzes the sample signal to indicate the time-of-flight of the electromagnetic pulses in the sequence. The sample signal in equivalent time is passed through an envelope detection circuit, formed of an absolute value circuit followed by a low pass filter, to convert the sample signal to a unipolar signal to eliminate effects of antenna misorientation. 8 figs.

McEwan, T.E.

1997-08-26T23:59:59.000Z

462

Analysis of the Relationship of U.S. Droughts with SST and Soil Moisture: Distinguishing the Time Scale of Droughts  

Science Conference Proceedings (OSTI)

The impacts of droughts depend on how long droughts persist and the reasons why droughts extend to different time scales may be different. The present study distinguishes the time scale of droughts based on the standardized precipitation index ...

Renguang Wu; James L. Kinter III

2009-09-01T23:59:59.000Z

463

Base isolation: Fresh insight  

SciTech Connect

The objective of the research is a further development of the engineering concept of seismic isolation. Neglecting the transient stage of seismic loading results in a widespread misjudgement: The force of resistance associated with velocity is mostly conceived as a source of damping vibrations, though it is an active force at the same time, during an earthquake type excitation. For very pliant systems such as base isolated structures with relatively low bearing stiffness and with artificially added heavy damping mechanism, the so called `damping`` force may occur even the main pushing force at an earthquake. Thus, one of the two basic pillars of the common seismic isolation philosophy, namely, the doctrine of usefulness and necessity of a strong damping mechanism, is turning out to be a self-deception, sometimes even jeopardizing the safety of structures and discrediting the very idea of seismic isolation. There is a way out: breaking with damping dependancy.

Shustov, V.

1993-07-15T23:59:59.000Z

464

High-Level Real-Time Concurrency  

E-Print Network (OSTI)

The primary goal of all real-time systems is predictability. Achieving this goal requires all levels of the system to be well de ned and have a xed worst-case execution time. These needs have resulted in the creation of overly restrictive commercial real-time systems providing only ad-hoc scheduling facilities and basic concurrent functionality. Ad-hoc scheduling makes developing, verifying, and maintaining a real-time system extremely dicult and time consuming. Basic concurrent functionality forces programmers to develop complex concurrent programs without the aid of high-level concurrency features.

Ashif S. Harji; C Ashif S. Harji

2000-01-01T23:59:59.000Z

465

Author's personal copy The time dependent vehicle routing problem with time windows  

E-Print Network (OSTI)

Author's personal copy The time dependent vehicle routing problem with time windows: Benchmark routing problems with hard or soft time windows without any alteration in its structure is presented of congested urban settings are proposed. Solution quality, time window pertur- bations, and computational time

Bertini, Robert L.

466

REAL-TIME BUILDING ENERGY SIMULATION USING ENERGYPLUS AND THE  

NLE Websites -- All DOE Office Websites (Extended Search)

REAL-TIME BUILDING ENERGY SIMULATION USING ENERGYPLUS AND THE REAL-TIME BUILDING ENERGY SIMULATION USING ENERGYPLUS AND THE BUILDING CONTROLS VIRTUAL TEST BED Xiufeng Pang 1 , Prajesh Bhattacharya 1 , Zheng O'Neill 2 , Philip Haves 1 , Michael Wetter 1 , and Trevor Bailey 2 1 Lawrence Berkeley National Laboratory, Berkeley, CA, USA 2 United Technologies Research Center, East Hartford, CT, USA ABSTRACT Most commercial buildings do not perform as well in practice as intended by the design and their performances often deteriorate over time. Reasons include faulty construction, malfunctioning equipment, incorrectly configured control systems and inappropriate operating procedures (Haves et al., 2001, Lee et al., 2007). To address this problem, the paper presents a simulation-based whole building performance monitoring tool that allows a

467

TIME DEPENDENCE OF SPACE CHARGE BEAM LOSSES IN THE COSMOTRON  

SciTech Connect

An investigation was made of Cosmotron intensity versus time through the entire time interval from the beginning of injection to the completion of r-f capture. The induction electrode signal was used for the instartaneous measurement of beam intensity. Oscilloscope displays of the signal were photographed and traced. Base lines were filled in on the tracings and the area of the pulses measured with a polar pianimeter. It was found that the relation losses of beam intensity increase with injection intensity (total injected charge), and that most of the losses take place in the time interval between the end of injection and the completion of the first synchrotron oscillation. (M.C.G.)

Barton, M.Q.; Sacharidis, E.J.

1962-01-01T23:59:59.000Z

468

TRANSIENT, REAL-TIME, PARTICULATE EMISSION MEASUREMENTS IN DIESEL ENGINES  

DOE Green Energy (OSTI)

This paper reports our efforts to develop an instrument, TG-1, to measure particulate emissions from diesel engines in real-time. TG-1 while based on laser-induced incandescence allows measurements at 10 Hz on typical engine exhausts. Using such an instrument, measurements were performed in the exhaust of a 1.7L Mercedes Benz engine coupled to a low inertia dynamometer. Comparative measurements performed under engine steady state conditions showed the instrument to agree within {+-}12% of measurements performed with an SMPS. Moreover, the instrument had far better time response and time resolution than a TEOM{reg_sign} 1105. Also, TG-1 appears to surpass the shortcomings of the TEOM instrument, i.e., of yielding negative values under certain engine conditions and, being sensitive to external vibration.

Gupta, S; Shih, J; Hillman, G; sekar, R; Graze, R; Shimpi, S; Martin, W; Pier, D

2003-08-24T23:59:59.000Z

469

Slicing Concurrent Real-Time System Specifications for Verification  

E-Print Network (OSTI)

The high-level specification language CSP-OZ-DC has been shown to be well-suited for modelling and analysing industrially relevant concurrent real-time systems. It allows us to model each of the most important functional aspects such as control flow, data, and real-time requirements in adequate notations, maintaining a common semantic foundation for subsequent verification. Slicing on the other hand has become an established technique to complement the fight against state space explosion during verification which inherently accompanies increasing system complexity. In this paper, we exploit the special structure of CSP-OZ-DC specifications by extending the dependence graphwhich usually serves as a basis for slicingwith several new types of dependencies, including timing dependencies derived from the specifications DC part. Based on this we show how to compute a specification slice and prove correctness of our approach.

Ingo Brckner

2007-01-01T23:59:59.000Z

470

Time-Energy Measure for Quantum Processes  

E-Print Network (OSTI)

Quantum mechanics sets limits on how fast quantum processes can run given some system energy through time-energy uncertainty relations, and they imply that time and energy are tradeoff against each other. Thus, we propose to measure the time-energy as a single unit for quantum channels. We consider a time-energy measure for quantum channels and compute lower and upper bounds of it using the channel Kraus operators. For a special class of channels (which includes the depolarizing channel), we can obtain the exact value of the time-energy measure. One consequence of our result is that erasing quantum information requires $\\sqrt{(n+1)/n}$ times more time-energy resource than erasing classical information, where $n$ is the system dimension.

Chi-Hang Fred Fung; H. F. Chau

2013-05-24T23:59:59.000Z

471

Average Predictability Time. Part II: Seamless Diagnoses of Predictability on Multiple Time Scales  

Science Conference Proceedings (OSTI)

This paper proposes a new method for diagnosing predictability on multiple time scales without time averaging. The method finds components that maximize the average predictability time (APT) of a system, where APT is defined as the integral of ...

Timothy DelSole; Michael K. Tippett

2009-05-01T23:59:59.000Z

472

JAVA & Parallelism/Real-time systems  

E-Print Network (OSTI)

Windowing Toolkit (AWT) in a memory-efficient way. JAVA Application Environment (JAE) Support enables the same applets and applications to run on other servers or platforms running the JAVA Virtual Machine. CHAPTER 2 Embedded and Real-Time JAVA According to the designers at Sun Microsystems, is JAVA also suitable for Embedded or Real-Time systems. Before proceeding further it is worth trying to define the phrase `real-time system' more precisely. 2.1 Definition of a real-time system There are many interpretations of the exact nature of a real-time system; however, they all have in common the notion of response time, the time taken for the system to generate output from some associated input. The Oxford Dictionary of Computing [48] gives the following definition of a real-time system. A real-time system is... Any system in which the time at which output is produced is significant. This is usually because the input corresponds to some movement in the physical world, and the output ha...

D. F. Nooren

1998-01-01T23:59:59.000Z

473

Interference in TDD based LMDS systems  

E-Print Network (OSTI)

In this paper different aspects concerning interference in TDD (Time Division Duplexing) based LMDS (Local Multipoint Distribution Systems) systems are considered. The most important interference situations are desribed and where appropriate comparisons with FDD (Frequency Division Duplexing) based systems will be made. Both intrasystem (between different operators' networks) and intersystem (within an operator's network) interference are considered.

Isabelle Tardy Ole; Ole Grndalen; Gianfranco Vezzani; Telital Unicom Centro Ricerche Telecomunicazioni

2002-01-01T23:59:59.000Z

474

Web-Based Project Management Tools  

E-Print Network (OSTI)

Role-based access to system functions, from guests to system managers E-mail based reminder functions- nating time-consuming paper chases System support done by SwRI, including system maintenance, data backups, software patches, and information security The SwRI Project Information Management System (PIMS

Chapman, Clark R.

475

Time and Tide Wait for No Diagram  

E-Print Network (OSTI)

Time plays an important role in some application domains, and can be quite difficult to deal with in diagrams. This is not only true for temporal uncertainty, but also for periodic events. We compare nine different representations that include a notion of time or that are mainly used for temporal information: Time Lines/LifeLines, AsbruView, Gantt- and PERT-Charts, Shinkansen timetables, Temporal Objects, Sets of Possible Occurrences (SOPOs), the Time Cube and Concentric Circles. Features of the different methods are presented and compared to other representations. This paper is meant to help the designer of a diagram or visualization who has to deal with time get an overview over different design ideas, and maybe get an inspiration for their own ideas. Keywords Information Visualization, Time in Problem Solving Methods, Knowledge Acquisition, Knowledge Engineering and Modeling Methodologies

Robert Kosara; Peter Messner; Silvia Miksch

2001-01-01T23:59:59.000Z

476

Property:Event/Time | Open Energy Information  

Open Energy Info (EERE)

Time Time Jump to: navigation, search Property Name Event/Time Property Type String Description The time an event occurs. For events which span an entire day, please use 'All Day'. When entering a specific time, please be sure to include the timezone information, for example: '2:45 PM MDT' or '10:00 AM GST'. Pages using the property "Event/Time" Showing 25 pages using this property. (previous 25) (next 25) A April Fool's Day + All Day + B Blane Harvey co-facilitating a session on use of climate decision making tools with CARE and Tearfund + 13:00-14:00 + Blane Harvey facilitating a lunchtime session on Indigenous Knowledge and Adaptation + 13:00-14:00 + Blane Harvey facilitating a lunchtime session on knowledge platforms and online communities of practice + 13:00-14:00 +

477

Reactor control rod timing system. [LMFBR  

DOE Patents (OSTI)

A fluid driven jet-edge whistle timing system is described for control rods of a nuclear reactor for producing real-time detection of the timing of each control rod in its scram operation. An important parameter in reactor safety, particularly for liquid metal fast breeder reactors (LMFBR), is the time deviation between the time the control rod is released and the time the rod actually reaches the down position. The whistle has a nearly pure tone signal with center frequency (above 100 kHz) far above the frequency band in which the energy of the background noise is concentrated. Each control rod can be fitted with a whistle with a different frequency so that there is no ambiguity in differentiating the signal from each control rod.

Wu, P.T.K.

1980-03-18T23:59:59.000Z

478

Time dependence of liquid-helium fluorescence  

SciTech Connect

The time dependence of extreme ultraviolet (EUV) fluorescence following an ionizing radiation event in liquid helium is observed and studied in the temperature range from 250 mK to 1.8 K. The fluorescence exhibits significant structure including a short ({approx}10 ns) strong initial pulse followed by single photons whose emission rate decays exponentially with a 1.6-{mu}s time constant. At an even longer time scale, the emission rate varies as '1/time' (inversely proportional to the time after the initial pulse). The intensity of the '1/time' component from {beta} particles is significantly weaker than those from {alpha} particles or neutron capture on {sup 3}He. It is also found that for {alpha} particles, the intensity of this component depends on the temperature of the superfluid helium. Proposed models describing the observed fluorescence are discussed.

McKinsey, D.N.; Brome, C.R.; Dzhosyuk, S.N.; Mattoni, C.E.H.; Yang, L.; Doyle, J.M. [Department of Physics, Harvard University, Cambridge, Massachusetts 02138 (United States); Golub, R.; Habicht, K.; Korobkina, E. [Hahn-Meitner Institut, Berlin-Wannsee (Germany); Huffman, P.R.; Thompson, A.K. [National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States); Lamoreaux, S.K. [Los Alamos National Laboratory, Los Alamos, New Mexico 87544 (United States)

2003-06-01T23:59:59.000Z

479

Statistical criteria for characterizing irradiance time series.  

SciTech Connect

We propose and examine several statistical criteria for characterizing time series of solar irradiance. Time series of irradiance are used in analyses that seek to quantify the performance of photovoltaic (PV) power systems over time. Time series of irradiance are either measured or are simulated using models. Simulations of irradiance are often calibrated to or generated from statistics for observed irradiance and simulations are validated by comparing the simulation output to the observed irradiance. Criteria used in this comparison should derive from the context of the analyses in which the simulated irradiance is to be used. We examine three statistics that characterize time series and their use as criteria for comparing time series. We demonstrate these statistics using observed irradiance data recorded in August 2007 in Las Vegas, Nevada, and in June 2009 in Albuquerque, New Mexico.

Stein, Joshua S.; Ellis, Abraham; Hansen, Clifford W.

2010-10-01T23:59:59.000Z

480

Bell's Jump Process in Discrete Time  

E-Print Network (OSTI)

The jump process introduced by J. S. Bell in 1986, for defining a quantum field theory without observers, presupposes that space is discrete whereas time is continuous. In this letter, our interest is to find an analogous process in discrete time. We argue that a genuine analog does not exist, but provide examples of processes in discrete time that could be used as a replacement.

Jonathan Barrett; Matthew Leifer; Roderich Tumulka

2005-06-08T23:59:59.000Z

Note: This page contains sample records for the topic "alt base time" 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

Runtime Monitoring of Timing Constraints in Distributed Real-Time Systems  

E-Print Network (OSTI)

. Embedded real-time systems often operate under strict timing and dependability constraints. To ensure responsiveness, these systems must be able to provide the expected services in a timely manner even in the presence of faults. In this paper, we describe a run-time environment for monitoring of timing constraints in distributed real-time systems. In particular, we focus on the problem of detecting violations of timing assertions in an environment in which the real-time tasks run on multiple processors, and timing constraints can be either inter-processor or intra-processor constraints. Constraint violations are detected at the earliest possible time by deriving and checking intermediate constraints from the user-specified constraints. If the violations must be detected as early as possible, then the problem of minimizing the number of messages to be exchanged between the processors becomes intractable. We characterize a sub-class of timing constraints that occur commonly in distribu...

Farnam Jahanian; Ragunathan Rajkumar; Sitaram C. V. Raju

1994-01-01T23:59:59.000Z

482

Sponsors : Daylighting The New York Times Building  

NLE Websites -- All DOE Office Websites (Extended Search)

researchindex.html In-kind cost-share The New York Times Company Advance Transformer Co. Lutron Electronics, Inc. MechoShade Systems, Inc. Siemens Building...

483

Special education teachers' personal time and money.  

E-Print Network (OSTI)

??Because of state and federal budget deficits. teachers are using thcir own time and rnoney to meet student nceds. This research seeks to determine the (more)

Tewalt, Brandon

2009-01-01T23:59:59.000Z

484

Real Time Grid Reliability Management 2005  

E-Print Network (OSTI)

Environmental Research Energy Systems Integration Real Time2) integration with CA ISO energy management system (EMS);2) integration with CA ISO energy management system (EMS);

Eto, Joe

2008-01-01T23:59:59.000Z

485

Construction Timing and Expectations | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Construction Timing and Expectations Construction Timing and Expectations Construction Timing and Expectations October 16, 2013 - 5:07pm Addthis Creating a detailed construction schedule that allows all the project elements to be coordinated in a timely manner is fundamental to any successful construction project. The construction schedule should take into account that many tasks cannot be started before others are finished. It should also account for special schedule considerations related to renewable energy systems. Key elements of most new construction or major renovation projects include landscape, structural, architectural, mechanical, electrical, plumbing, communication systems, and renewable energy systems. Maintaining the highest quality of construction across all elements is fundamental to any

486

'Dead Time' Limits Quantum Cryptography Speeds  

Science Conference Proceedings (OSTI)

... Not only does dead time limit the transmission rate of a message ... effects and paralyzability in high-speed quantum key distribution, New Journal of ...

2012-06-08T23:59:59.000Z

487

Time Series Prediction Forecasting the Future and ...  

Science Conference Proceedings (OSTI)

Time Series Prediction Forecasting the Future and Understanding the Past Santa Fe Institute Proceedings on the Studies in the Sciences of ...

2012-10-01T23:59:59.000Z

488

NIST Time and Frequency Division 1993 - Technical ...  

Science Conference Proceedings (OSTI)

... can be reached with commercial red diode ... the time scale when building and remodelling ... American Geophysical Union meeting in San Francisco. ...

489

Commuting time geometry of ergodic Markov chains  

E-Print Network (OSTI)

We show how to map the states of an ergodic Markov chain to Euclidean space so that the squared distance between states is the expected commuting time. We find a minimax characterization of commuting times, and from this we get monotonicity of commuting times with respect to equilibrium transition rates. All of these results are familiar in the case of time-reversible chains, where techniques of classical electrical theory apply. In presenting these results, we take the opportunity to develop Markov chain theory in a `conformally correct' way

Doyle, Peter G

2011-01-01T23:59:59.000Z

490

Meykhana - The poetics of time and space.  

E-Print Network (OSTI)

??Right before the rhythmic, improvisational and poetic genre called meykhana was forbidden to practice in Soviet Azerbaijan, it bloomed for a short time in the (more)

Zakariyya, Zulaim

2012-01-01T23:59:59.000Z

491

NIST Time Measurement and Analysis Service (TMAS)  

Science Conference Proceedings (OSTI)

... Analysis Service (TMAS) was designed to assist ... and calibrated time measurement system which includes ... easy-to-read instruction manual makes ...

2013-03-28T23:59:59.000Z

492

SIM Time and Frequency Working Group  

Science Conference Proceedings (OSTI)

... SIM Time and Frequency Metrology Course at INTI. Buenos Aires, Argentina (February 4th through February 7th, 2008). Schedule in PDF format. ...

493

SIM Time and Frequency Working Group  

Science Conference Proceedings (OSTI)

... file). Schedule and Slides from Time and Frequency Metrology Course in Buenos Aires, Argentina (2/4/08 to 02/07/08). Schedule ...

494

Time fractional development of quantum systems  

Science Conference Proceedings (OSTI)

In this study, the effect of time fractionalization on the development of quantum systems is taken under consideration by making use of fractional calculus. In this context, a Mittag-Leffler function is introduced as an important mathematical tool in the generalization of the evolution operator. In order to investigate the time fractional evolution of the quantum (nano) systems, time fractional forms of motion are obtained for a Schroedinger equation and a Heisenberg equation. As an application of the concomitant formalism, the wave functions, energy eigenvalues, and probability densities of the potential well and harmonic oscillator are time fractionally obtained via the fractional derivative order {alpha}, which is a measure of the fractality of time. In the case {alpha}=1, where time becomes homogenous and continuous, traditional physical conclusions are recovered. Since energy and time are conjugate to each other, the fractional derivative order {alpha} is relevant to time. It is understood that the fractionalization of time gives rise to energy fluctuations of the quantum (nano) systems.

Ertik, Hueseyin; Demirhan, Dogan; Sirin, Hueseyin; Bueyuekkilic, Fevzi [Department of Physics, Science Faculty, Ege University, Bornova, Izmir 35100 (Turkey)

2010-08-15T23:59:59.000Z

495

TIME REVERSAL ACOUSTIC NONCONTACT SOURCE - Energy Innovation ...  

The present invention provides a flexible noncontact source of wave energy through the use of time reversal. In the preferred embodiment a ...

496

NIST Time and Frequency Division History  

Science Conference Proceedings (OSTI)

... of accurate measurements of mean solar time (from ... needs of the broadcast industry, NIST initiated ... Concurrent with the development of more recent ...

2010-10-05T23:59:59.000Z

497

Multiplicative cascades and seismicity in natural time  

Science Conference Proceedings (OSTI)

Natural time chi enables the distinction of two origins of self-similarity, i.e., the process memory and the process increments infinite variance. Employing multiplicative cascades in natural time, the most probable value of the variance kappa{sub 1}(ident to-{sup 2}) is explicitly related with the parameter b of the Gutenberg-Richter law of randomly shuffled earthquake data. Moreover, the existence of temporal and magnitude correlations is studied in the original earthquake data. Magnitude correlations are larger for closer in time earthquakes, when the maximum interoccurrence time varies from half a day to 1 min.

Sarlis, N. V.; Skordas, E. S.; Varotsos, P. A. [Department of Physics, Solid State Section and Solid Earth Physics Institute, University of Athens, Panepistimiopolis, Zografos, 157 84 Athens (Greece)

2009-08-15T23:59:59.000Z

498