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Note: This page contains sample records for the topic "broadband pyranometer measurements" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
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1

Improved Methodology to Measure Normal Incident Solar Radiation with a Multi-Pyranometer Array  

E-Print Network [OSTI]

and south sensors and one for the east and west sensors. The solution for the east and west sensors is expanded to two new solutions by mirroring their readings according to the solar noon; each real measurement and its mirrored values generate a solution..., which was originally developed approximately 30 years back, Hšmšlšinen et al. [1] developed an instrument, which included 25 solar radiation sensors mounted on a metal hemisphere. Since then, many other have further studied how to simplify...

Baltazar, Juan Carlos; Haberl, Jeff; Sun, Yifu

2

SOLAR CELL BASED PYRANOMETERS: EVALUATION OF THE DIFFUSE RESPONSE Frank Vignola  

E-Print Network [OSTI]

260 SOLAR CELL BASED PYRANOMETERS: EVALUATION OF THE DIFFUSE RESPONSE Frank Vignola Department The responsivity to diffuse radiation of a solar cell based pyranometer is studied. Diffuse measurements are made of the LiCor pyranometer is presented. Implication of the spectral dependence of the solar cell based

Oregon, University of

3

Proceedings of the International Energy Agency Conference on Pyranometer Measurements: Final Report; 16 - 20 March 1981, Boulder, Colorado  

SciTech Connect (OSTI)

A conference of pyranometry measurement experts from seven nations was held 16-20 March 1981 in Boulder, Colorado, USA, under the auspices of the International Energy Agency, the United States Department of Energy, and the Solar Energy Research Institute. This report documents the technical presentations, background, and the results and recommendations of the conference.

Riches, M. R.; Stoffel, T. L.; Wells, C. V.

1982-10-01T23:59:59.000Z

4

ARM - Measurement - Net broadband total irradiance  

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

govMeasurementsNet broadband total irradiance govMeasurementsNet broadband total irradiance ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Net broadband total irradiance The difference between upwelling and downwelling, covering longwave and shortwave radiation. Categories Radiometric Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments EBBR : Energy Balance Bowen Ratio Station SEBS : Surface Energy Balance System External Instruments ECMWF : European Centre for Medium Range Weather Forecasts Model

5

Comparison of Pyranometers vs. PV Reference Cells for Evaluation of PV Array Performance  

SciTech Connect (OSTI)

As the photovoltaics (PV) industry has grown, the need for accurately monitoring the solar resource of PV power plants has increased. Historically, the PV industry has relied on thermopile pyranometers for irradiance measurements, and a large body of historical irradiance data taken with pyranometers exists. However, interest in PV reference devices is increasing. In this paper, we discuss why PV reference devices are better suited for PV applications, and estimate the typical uncertainties in irradiance measurements made with both pyranometers and PV reference devices. We assert that the quantity of interest in monitoring a PV power plant is the equivalent irradiance under the IEC 60904-3 reference solar spectrum that would produce the same electrical response in the PV array as the incident solar radiation. For PV-plant monitoring applications, we find the uncertainties in irradiance measurements of this type to be on the order of +/-5% for thermopile pyranometers and +/-2.4% for PV reference devices.

Dunn, L.; Gostein, M.; Emery, K.

2012-09-01T23:59:59.000Z

6

ARM - Measurement - Longwave broadband downwelling irradiance  

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

downwelling irradiance downwelling irradiance ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Longwave broadband downwelling irradiance The total diffuse and direct radiant energy, at wavelengths longer than approximately 4 {mu}m, that is being emitted downwards. Categories Radiometric Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments BSRN : Baseline Solar Radiation Network BRS : Broadband Radiometer Station CO2FLX : Carbon Dioxide Flux Measurement Systems

7

ARM - Measurement - Shortwave broadband total downwelling irradiance  

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

downwelling irradiance downwelling irradiance ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Shortwave broadband total downwelling irradiance The total diffuse and direct radiant energy that comes from some continuous range of directions, at wavelengths between 0.4 and 4 {mu}m, that is being emitted downwards. Categories Radiometric Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AMC : Ameriflux Measurement Component BSRN : Baseline Solar Radiation Network

8

ARM - Measurement - Shortwave broadband direct normal irradiance  

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

normal irradiance normal irradiance ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Shortwave broadband direct normal irradiance The rate at which radiant energy in broad bands of wavelengths shorter than approximately 4{mu}m, that comes directly from the Sun without being scattered or absorbed in the atmosphere, passes through a unit area perpendicular to the direction from the Sun. Categories Radiometric Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments

9

ARM - Measurement - Shortwave broadband diffuse downwelling irradiance  

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

diffuse downwelling irradiance diffuse downwelling irradiance ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Shortwave broadband diffuse downwelling irradiance All of the solar radiation, across the wavelength range of 0.4 and 4 {mu}m, coming directly from the sky except for solar radiation coming directly from the sun and the circumsolar irradiance within approximately three degrees of the sun. Categories Radiometric Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments

10

Broadband VLF measurements of lightning-induced ionospheric perturbations  

E-Print Network [OSTI]

by the strong lightning flash by analyzing the broadband VLF spectrum from lightning that occurred just beforeBroadband VLF measurements of lightning-induced ionospheric perturbations Zhenggang Cheng 2005. [1] Very low frequency (VLF) electromagnetic pulses radiated by lightning are an effective tool

Cummer, Steven A.

11

ARM - Measurement - Shortwave broadband total upwelling irradiance  

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

Flights) MFR : Multifilter Radiometer MFRIRT : Multifilter Radiometer and Infrared Thermometer RAD : Radiation Measurements at AMF SIRS : Solar and Infrared Radiation Station...

12

Evaluation of Photodiode and Thermopile Pyranometers for Photovoltaic Applications: Preprint  

SciTech Connect (OSTI)

Accurately determining PV module performance in the field requires measurement of solar irradiance reaching the PV panel at a high level of accuracy and known uncertainty. Silicon detectors used in various solar energy measuring instruments including reference cells are potentially an attractive choice for multiple reasons that include faster responsivity than thermopile detectors, cheaper cost and lower maintenance. The main drawback though is the fact that the silicon detectors are only spectrally responsive in a narrow part of the solar spectrum. Therefore, to determine broadband solar irradiance a calibration factor that converts the narrowband response to broadband is required. Normally this calibration factor is a single number determined under standard conditions but then used for various scenarios including varying air-mass, panel orientation and atmospheric conditions. This would not have been an issue if all wavelengths that form the broadband spectrum responded uniformly to atmospheric constituents. Unfortunately the scattering and absorption signature varies widely across wavelengths and the calibration factor computed under certain test conditions is not appropriate for other conditions. This paper lays out the issues that will arise from the use of silicon detectors for PV performance measurement in the field. We also present a comparison of simultaneous spectral and broadband measurements from silicon and thermopile detectors and estimated measurement errors when using silicon devices for both array performance and resource assessment.

Sengupta, M.; Gotseff, P.; Stoffel, T.

2012-09-01T23:59:59.000Z

13

Pyranometers and Reference Cells: Part 2: What Makes the Most Sense for PV Power Plants?; Preprint  

SciTech Connect (OSTI)

As described in Part 1 of this two-part series, thermopile pyranometers and photovoltaic (PV) reference cells can both be used to measure irradiance; however, there are subtle differences between the data that are obtained. This two-part article explores some implications of uncertainty and subtleties of accurately measuring PV efficiency in the field. Part 2 of the series shows how reference cells can be used to more confidently predict PV performance, but how this could best be accomplished if historic irradiance data could be available in PV-technology-specific formats.

Meydbray, J.; Riley, E.; Dunn, L.; Emery, K.; Kurtz, S.

2012-10-01T23:59:59.000Z

14

Solar Radiometric Data Quality Assessment of SIRS, SKYRAD and GNDRAD Measurements (Poster)  

SciTech Connect (OSTI)

Solar radiation is the driving force for the earth's weather and climate. Understanding the elements of this dynamic energy balance requires accurate measurements of broadband solar irradiance. Since the mid-1990's the ARM Program has deployed pyrheliometers and pyranometers for the measurement of direct normal irradiance (DNI), global horizontal irradiance (GHI), diffuse horizontal irradiance (DHI), and upwelling shortwave (US) radiation at permanent and mobile field research sites. This poster summarizes the basis for assessing the broadband solar radiation data available from the SIRS, SKYRAD, and GNDRAD measurement systems and provides examples of data inspections.

Habte, A.; Stoffel, T.; Reda, I.; Wilcox, S.; Kutchenreiter, M.; Gotseff, P.; Anderberg, M.

2014-03-01T23:59:59.000Z

15

Establishing the Clear-Sky Diffuse Reference for BORCAL Using EPLAB Model 8-48 Pyranometers at the National Renewable Energ...  

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

Establishing the Clear-Sky Diffuse Reference for BORCAL Establishing the Clear-Sky Diffuse Reference for BORCAL Using EPLAB Model 8-48 Pyranometers at the National Renewable Energy Laboratory I. Reda, T. L. Stoffel, and D. Myers National Renewable Energy Laboratory Golden, Colorado Abstract Precision pyranometer calibrations are important to the quality of Atmospheric Radiation Measurement's (ARM's) shortwave solar irradiance measurements. Calibrations at the National Renewable Energy Laboratory (NREL) and Southern Great Plains (SGP) are under clear-sky conditions. G = I * COS(2) + D, is used to establish the reference global during the calibration. The references for the beam irradiance, I, and the solar zenith angle, 2, are internationally recognized. There is no recognized reference for the diffuse irradiance, D. Our research goal is to establish a consistent diffuse

16

A Simple Empirical Equation to Calculate Cloud Optical Thickness from Shortwave Broadband Measurements  

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

Simple Empirical Equation to Calculate Cloud Optical Simple Empirical Equation to Calculate Cloud Optical Thickness from Shortwave Broadband Measurements J. C. Barnard and C. N. Long Pacific Northwest National Laboratory Richland, Washington Introduction Observational studies of shortwave cloud optical thickness, c , play an important role in determining how clouds affect climate. Accordingly, considerable effort has been, and continues to be expended to characterize the spatial and temporal distribution of c over the globe. This effort involves satellite and ground-based measurements that infer c from measurements of the reflection or transmission of solar radiation. Transmitted solar radiation forms the basis of several important algorithms designed to calculate c ; these algorithms use either spectral irradiances (Min and Harrison 1996; henceforth referred

17

Case Study of the Application of a Modified Method to Measure Global Solar Irradiance  

SciTech Connect (OSTI)

Case study that examines the application of a pyranometer responsivity function to data from 23 measurement stations in the Southern Great Plains.

Rael, F. P.

2006-02-01T23:59:59.000Z

18

A Climatological measurement methods This appendix describes the methods of climatological variable measurement at the  

E-Print Network [OSTI]

as the total energy received as radiation per unit surface area tangential to the earths surface. As mentioned-wave A sensor used to measure the energy flux density of short-wave radiation is referred to as a pyranometerA Climatological measurement methods This appendix describes the methods of climatological variable

19

A 25-month database of stratus cloud properties generated from ground-based measurements at the Atmospheric Radiation Measurement Southern Great Plains Site  

SciTech Connect (OSTI)

A 25-month database of the macrophysical, microphysical, and radiative properties of isolated and overcast low-level stratus clouds has been generated using a newly developed parameterization and surface measurements from the Atmospheric Radiation Measurement central facility in Oklahoma. The database (5-min resolution) includes two parts: measurements and retrievals. The former consist of cloud base and top heights, layer-mean temperature, cloud liquid water path, and solar transmission ratio measured by a ground-based lidar/ceilometer and radar pair, radiosondes, a microwave radiometer, and a standard Eppley precision spectral pyranometer, respectively. The retrievals include the cloud-droplet effective radius and number concentration and broadband shortwave optical depth and cloud and top-of-atmosphere albedos. Stratus without any overlying mid or high-level clouds occurred most frequently during winter and least often during summer. Mean cloud-layer altitudes and geometric thicknesses were higher and greater, respectively, in summer than in winter. Both quantities are positively correlated with the cloud-layer mean temperature. Mean cloud-droplet effective radii range from 8.1 {mu}m in winter to 9.7 {mu}m during summer, while cloud-droplet number concentrations during winter are nearly twice those in summer. Since cloud liquid water paths are almost the same in both seasons, cloud optical depth is higher during the winter, leading to greater cloud albedos and lower cloud transmittances. (c) 2000 American Geophysical Union.

Dong, Xiquan [Meteorology Department, University of Utah, Salt Lake City (United States)] [Meteorology Department, University of Utah, Salt Lake City (United States); Minnis, Patrick [NASA Langley Research Center, Hampton, Virginia (United States)] [NASA Langley Research Center, Hampton, Virginia (United States); Ackerman, Thomas P. [Pacific Northwest National Laboratory, DOE, Richland, Washington (United States)] [Pacific Northwest National Laboratory, DOE, Richland, Washington (United States); Clothiaux, Eugene E. [Department of Meteorology, Pennsylvania State University, University Park (United States)] [Department of Meteorology, Pennsylvania State University, University Park (United States); Mace, Gerald G. [Meteorology Department, University of Utah, Salt Lake City (United States)] [Meteorology Department, University of Utah, Salt Lake City (United States); Long, Charles N. [Department of Meteorology, Pennsylvania State University, University Park (United States)] [Department of Meteorology, Pennsylvania State University, University Park (United States); Liljegren, James C. [Ames Laboratory, DOE, Ames, Iowa (United States)] [Ames Laboratory, DOE, Ames, Iowa (United States)

2000-02-27T23:59:59.000Z

20

Validation of Surface Retrieved Cloud Optical Properties with in situ Measurements at the Atmospheric Radiation Measurement Program (ARM) South Great Plains Site  

SciTech Connect (OSTI)

The surface inferred cloud optical properties from a multifilter rotating shadowband radiometer have been validated against the in situ measurements during the second ARM Enhanced Shortwave Experiment (ARESE II) field campaign at the ARM South Great Plains (SGP) site. On the basis of eight effective radius profiles measured by the in situ Forward Spectra Scattering Probe (FSSP), our retrieved cloud effective radii for single-layer warm water clouds agree well with in situ measurements, within 5.5%. The sensitivity study also illustrates that for this case a 13% uncertainty in observed liquid water path (LWP, 20 g/m2) results in 1.5% difference in retrieved cloud optical depth and 12.7% difference in referred cloud effective radius, on average. The uncertainty of the LWP measured by the microwave radiometer (MWR) is the major contributor to the uncertainty of retrieved cloud effective radius. Further, we conclude that the uncertainty of our inferred cloud optical properties is better than 5% for warm water clouds based on a surface closure study, in which cloud optical properties inferred from narrowband irradiances are applied to a shortwave model and the modeled broadband fluxes are compared to a surface pyranometer.

Min, Qilong; Duan, M.; Marchand, Roger T.

2003-09-11T23:59:59.000Z

Note: This page contains sample records for the topic "broadband pyranometer measurements" 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

ARM - Measurement - Shortwave broadband radiance  

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

0.4 and 4 mu, emitted by a radiator in a given direction, expressed in units of energy per unit time per unit solid angle. Categories Radiometric Instruments The above...

22

Implementing the National Broadband  

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

Type text] Type text] Response to Request for Information from the Department of Energy: Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy [FR Doc. 2010-11127] July 12, 2010 EnerNOC Page 2 of 8 EnerNOC, Inc. ("EnerNOC") is pleased to provide these comments to the Department of Energy in response to the Request for Information "Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy." EnerNOC is a provider of demand response and energy efficiency solutions to utilities, Independent

23

Long range heliostat target using array of normal incidence pyranometers to evaluate a beam of solar radiation  

DOE Patents [OSTI]

Various technologies described herein pertain to evaluating a beam reflected by a heliostat. A portable target that has an array of sensors mounted thereupon is configured to capture the beam reflected by the heliostat. The sensors in the array output measured values indicative of a characteristic of the beam reflected by the heliostat. Moreover, a computing device can generate and output data corresponding to the beam reflected by the heliostat based on the measured values indicative of the characteristic of the beam received from the sensors in the array.

Ghanbari, Cheryl M; Ho, Clifford K; Kolb, Gregory J

2014-03-04T23:59:59.000Z

24

Implementing the National Broadband  

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

Before the Before the Department of Energy Washington, D.C. 20585 In the Matter of Implementing the National Broadband Plan by Studying the Communications Requirements of Electric Utilities To Inform Federal Smart Grid Policy NBP RFI: Communications Requirements COMMENTS OF BALTIMORE GAS & ELECTRIC COMPANY I. Introduction BGE is the nation's oldest and most experienced utility company. It has met the energy needs of central Maryland for nearly 200 years. Today, it serves more than 1.2 million business and residential electric customers, and approximately 650,000 gas customers in an economically diverse, 2,300-square-mile area encompassing Baltimore City and all or part of ten central Maryland counties.

25

Performance Testing using Silicon Devices - Analysis of Accuracy: Preprint  

SciTech Connect (OSTI)

Accurately determining PV module performance in the field requires accurate measurements of solar irradiance reaching the PV panel (i.e., Plane-of-Array - POA Irradiance) with known measurement uncertainty. Pyranometers are commonly based on thermopile or silicon photodiode detectors. Silicon detectors, including PV reference cells, are an attractive choice for reasons that include faster time response (10 us) than thermopile detectors (1 s to 5 s), lower cost and maintenance. The main drawback of silicon detectors is their limited spectral response. Therefore, to determine broadband POA solar irradiance, a pyranometer calibration factor that converts the narrowband response to broadband is required. Normally this calibration factor is a single number determined under clear-sky conditions with respect to a broadband reference radiometer. The pyranometer is then used for various scenarios including varying airmass, panel orientation and atmospheric conditions. This would not be an issue if all irradiance wavelengths that form the broadband spectrum responded uniformly to atmospheric constituents. Unfortunately, the scattering and absorption signature varies widely with wavelength and the calibration factor for the silicon photodiode pyranometer is not appropriate for other conditions. This paper reviews the issues that will arise from the use of silicon detectors for PV performance measurement in the field based on measurements from a group of pyranometers mounted on a 1-axis solar tracker. Also we will present a comparison of simultaneous spectral and broadband measurements from silicon and thermopile detectors and estimated measurement errors when using silicon devices for both array performance and resource assessment.

Sengupta, M.; Gotseff, P.; Myers, D.; Stoffel, T.

2012-06-01T23:59:59.000Z

26

Correction factors for the sun shield used with the Eppley pyranometer for the measurement of sky radiation under clear and partly cloudy skies  

E-Print Network [OSTI]

. That is to say, they are independent of variations in amount of cloud and angles of solar altitude and declination. If this is true, then the means of the various cells (see Appendix C) are equal. Two estimates of the variance of the population were obtained.... That is to say, they are independent of variations in amount of cloud and angles of solar altitude and declination. If this is true, then the means of the various cells (see Appendix C) are equal. Two estimates of the variance of the population were obtained...

Albro, William Arthur

2012-06-07T23:59:59.000Z

27

Broadband absorption spectroscopy in turbid media by combined frequency-domain and  

E-Print Network [OSTI]

Broadband absorption spectroscopy in turbid media by combined frequency-domain and steady. Tromberg A technique for measuring broadband near-infrared absorption spectra of turbid media that uses selected wavelengths. Coefficients of absorption a and reduced scattering s derived from the FD data

Berger, Andrew J.

28

ARM - Publications: Science Team Meeting Documents  

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

Using a MFRSR to Calculate Direct and Diffuse Broadband Measurements from Using a MFRSR to Calculate Direct and Diffuse Broadband Measurements from Global Broadband Measurements Cornwall, C.R. (a,b), Hodges, G.B. (a,b), and DeLuisi, J.D. (b), University of Colorado Cooperative Institute for Research in Environmental Sciences (a), NOAA Air Resources Lab (b) Eleventh Atmospheric Radiation Measurement (ARM) Science Team Meeting Research Objective: To infer values of direct solar irradiance using data from a Multi-Filter Rotating Shadowband Radiometer (MFRSR) and a broadband pyranometer measuring global horizontal irradiance. Methodology: The MFRSR measures global and diffuse radiation over six narrow spectral bands as well as one broadband (silicon pyranometer). Values for corresponding direct normal irradiances are automatically calculated as part of the MFRSR

29

Broadband Femtosecond Sources for Greenhouse Gas Spectroscopy and Trace-Gas Sensing  

Science Journals Connector (OSTI)

We describe several approaches for producing broadband femtosecond sources in the mid-infrared for applications in atmospheric spectroscopy. Using a 3.3 Ķm source, measurements of CH4...

Neely, Tyler W; Johnson, Todd; Nugent-Glandorf, Lora; Adler, Florian; Diddams, Scott

30

Broad-band beam buncher  

DOE Patents [OSTI]

A broad-band beam buncher is disclosed, comprising an evacuated housing, an electron gun therein for producing an electron beam, a buncher cavity having entrance and exit openings through which the beam is directed, grids across such openings, a source providing a positive DC voltage between the cavity and the electron gun, a drift tube through which the electron beam travels in passing through such cavity, grids across the ends of such drift tube, gaps being provided between the drift tube grids and the entrance and exit grids, a modulator for supplying an ultrahigh frequency modulating signal to the drift tube for producing velocity modulation of the electrons in the beam, a drift space in the housing through which the velocity modulated electron beam travels and in which the beam is bunched, and a discharge opening from such drift tube and having a grid across such opening through which the bunched electron beam is discharged into an accelerator or the like. The buncher cavity and the drift tube may be arranged to constitute an extension of a coaxial transmission line which is employed to deliver the modulating signal from a signal source. The extended transmission line may be terminated in its characteristic impedance to afford a broad-band response and the device as a whole designed to effect broad-band beam coupling, so as to minimize variations of the output across the response band.

Goldberg, David A. (Walnut Creek, CA); Flood, William S. (Berkeley, CA); Arthur, Allan A. (Martinez, CA); Voelker, Ferdinand (Orinda, CA)

1986-01-01T23:59:59.000Z

31

ARM - Publications: Science Team Meeting Documents: Comparison of broadband  

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

Comparison of broadband solar irradiances measured on fixed and stabilized Comparison of broadband solar irradiances measured on fixed and stabilized platforms Ellingson, Robert Florida State University Takara, Ezra Florida State University Tooman, Tim Sandia National Laboratories Fixed and stabilized platform CM-22 radiometer observations obtained on long, constant altitude flight legs during the 2002 UAV flight series have been compared to estimate the possible improvements to shortwave absorption estimates that might be realized from stabilized measurements on stacked aircraft. This poster will chronicle the methods necessary to correct fixed platform measurements for aircraft pitch, roll and heading and will highlight the magnitude of the irradiance uncertainties resulting from the standard corrections. The fixed platform uncertainties at one level,

32

ARM - Measurement - Shortwave broadband direct downwelling irradiance  

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

Experimental) RADFLUXANAL : Radiative Flux Analysis SWFLUXANAL : Shortwave Flux Analysis UAV-ALTUS : UAV Altus UAV-EGRETT : UAV-Egrett UAV-GNAT : UAV-General Atomics GNAT...

33

ARM - Measurement - Longwave broadband net irradiance  

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

Range Weather Forecasts Diagnostic Analyses ECMWF : European Centre for Medium Range Weather Forecasts Model Data GMS : Geostationary Meteorological Satellite GOES :...

34

ARM - Measurement - Shortwave broadband total net irradiance  

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

Range Weather Forecasts Diagnostic Analyses ECMWF : European Centre for Medium Range Weather Forecasts Model Data Value-Added Products ARMBE : ARM Best Estimate Data Products...

35

ARM - Measurement - Longwave broadband upwelling irradiance  

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

Radiation IAP : In-situ Aerosol Profiles (Cessna Aerosol Flights) IRT : Infrared Thermometer MFRIRT : Multifilter Radiometer and Infrared Thermometer RAD : Radiation...

36

"Develop enabling optoelectronic devices for broadband  

E-Print Network [OSTI]

"Develop enabling optoelectronic devices for broadband communications and photonic systems Group Our group focuses on optoelectronic devices and photonic integrated circuits to photodiodes with the highest linearity and output power to date. High-Speed Optoelectronic Devices Driven

Acton, Scott

37

Subsurface Glider Localization Using Broadband Acoustic Sources  

E-Print Network [OSTI]

Researcher, ORE Abstract Ocean gliders are low-power, buoyancy-driven, autonomous underwater vehicles inherent in broadband ocean acoustic tomography signals, this uncertainty can be reduced by 1-2 orders

Frandsen, Jannette B.

38

Broad-band beam buncher  

DOE Patents [OSTI]

A broad-band beam bunther is disclosed, comprising an evacuated housing, an electron gun therein for producing an electron beam, a buncher cavity having entrance and exit openings through which the beam is directed, grids across such openings, a source providing a positive DC voltage between the cavity and the electron gun, a drift tube through which the electron beam travels in passing through such cavity, grids across the ends of such drift tube, gaps being provided between the drift tube grids and the entrance and exit grids, a modulator for supplying an ultrahigh frequency modulating signal to the drift tube for producing velocity modulation of the electrons in the beam, a drift space in the housing through which the velocity modulated electron beam travels and in which the beam is bunched, and a discharge opening from such drift tube and having a grid across such opening through which the bunched electron beam is discharged into an accelerator or the like. The buncher cavity and the drift tube may be arranged to constitute an extension of a coaxial transmission line which is employed to deliver the modulating signal from a signal source. The extended transmission line may be terminated in its characteristic impedance to afford a broad-

Goldberg, D.A.; Flood, W.S.; Arthur, A.A.; Voelker, F.

1984-03-20T23:59:59.000Z

39

New Visible to Broadband Shortwave Conversions for Deriving Albedos from GOES-8 Over the ARM-SGP  

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

New Visible to Broadband Shortwave Conversions for New Visible to Broadband Shortwave Conversions for Deriving Albedos from GOES-8 Over the ARM-SGP V. Chakrapani, D. R. Doelling, and M. M. Khaiyer Analytical Services and Materials, Inc. Hampton, Virginia P. Minnis National Aeronautics and Space Administration Langley Research Center Hampton, Virginia Introduction The radiation budget at the top of the atmosphere (TOA) is a quantity of fundamental importance to the Atmospheric Radiation Measurement (ARM) Program. Thus, it is necessary to measure the radiation budget components, broadband shortwave (SW) albedo and outgoing longwave radiation, as accurately as possible. Measurement of TOA broadband albedos over the ARM surface sites has only been possible since the advent of Clouds and the Earth's Radiant Energy System (CERES; Wielicki et al.

40

Broadband laser diode emitting at 1. 28. mu. m wavelength  

SciTech Connect (OSTI)

This letter presents a broadband laser diode (LD) emitting at the 1.28 ..mu..m wavelength fabricated by introducing an absorption region (300 ..mu..m long) into a conventional 600-..mu..m-long InGaAsP laser diode. The LD operates by the pulsed modulation of a high peak current whose repetition rate and duty cycle are respectively 200 kHz and 5%. The typical output power and the spectral width of the LD are 3.8 mW and 58 A, and the measured coherence length is 210 ..mu..m.

Takada, K.; Noda, J.

1985-10-15T23:59:59.000Z

Note: This page contains sample records for the topic "broadband pyranometer measurements" 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

Municipal wireless mesh networks as a competitive broadband delivery platform  

E-Print Network [OSTI]

Recently there has been a growing interest in deploying Wireless Mesh Networks by municipalities. This interest stems from the desire to provide broadband connectivity to users lacking access to broadband alternatives. The ...

Hassan-Ali, Mudhafar

2007-01-01T23:59:59.000Z

42

The Political Economies of Broadband Development in Korea and Japan  

E-Print Network [OSTI]

of DSL), gave Japan the fastest household broadband networksJapan third in the number of total broadband subscribers, 10 and by the end of 2005 over 44% of households

Kushida, Kenji; Oh, Seung-Youn

2007-01-01T23:59:59.000Z

43

Broadband squeezing of quantum noise in a Michelson interferometer with Twin-Signal-Recycling  

E-Print Network [OSTI]

Twin-Signal-Recycling (TSR) builds on the resonance doublet of two optically coupled cavities and efficiently enhances the sensitivity of an interferometer at a dedicated signal frequency. We report on the first experimental realization of a Twin-Signal-Recycling Michelson interferometer and also its broadband enhancement by squeezed light injection. The complete setup was stably locked and a broadband quantum noise reduction of the interferometers shot noise by a factor of up to 4\\,dB was demonstrated. The system was characterized by measuring its quantum noise spectra for several tunings of the TSR cavities. We found good agreement between the experimental results and numerical simulations.

Andrť ThŁring; Christian Gršf; Henning Vahlbruch; Moritz Mehmet; Karsten Danzmann; Roman Schnabel

2010-05-25T23:59:59.000Z

44

Broadband Wireless Cognitive Radio-I  

E-Print Network [OSTI]

spectrum usage! #12;CMPE 591 - Broadband Wireless Networks 6 Cognitive Radio "Cognitive Radio" is the key portions of the spectrum is available and detect the presence of licensed users when a user operates in a licensed band. (Spectrum Sensing) 2. Select the best available channel. (Spectrum Decision) 3. Coordinate

Tu√įcu, Tuna

45

Broadband, Higher Education and Rural New Mexico  

E-Print Network [OSTI]

Broadband, Higher Education and Rural New Mexico Gil Gonzales, Ph.D., Chief Information Officer University of New Mexico, Albuquerque, NM 87131 E mail: gonzgil@unm.edu Background UNM students enjoy the country do. New Mexico is also home to two national laboratories in Los Alamos (Los Alamos National

Maccabe, Barney

46

Title Slide "The broadband acoustic output of  

E-Print Network [OSTI]

Title Slide "The broadband acoustic output of marine seismic airgun sources" Les Hatton CISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . #12;Seismic sources ­ marine airguns Introduction Modelling Marine Life Impact Where next Overview #12 Normal speed surface movie of airgun firing Courtesy IO limited #12;Seismic sources ­ marine airguns

Hatton, Les

47

Broadband solar absorption enhancement via periodic  

E-Print Network [OSTI]

Broadband solar absorption enhancement via periodic nanostructuring of electrodes Michael M. Adachi Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 3G4, Canada, 2 Province, 230009, P. R. China. Solution processed colloidal quantum dot (CQD) solar cells have great

48

In the Matter of National Broadband Plan Request for Information:  

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

In the Matter of National Broadband Plan Request for Information: In the Matter of National Broadband Plan Request for Information: Communications Requirements In the Matter of National Broadband Plan Request for Information: Communications Requirements The American Public Power Association ("APPA") appreciates this opportunity to respond to the Department of Energy ("the Department" or "DOE") regarding its Request for Information ("RFI") on Implementing the National Broadband Plan by Studying the Communications Requirements of Electric Utilities to Inform Federal Smart Grid Policy. In the Matter of National Broadband Plan Request for Information: Communications Requirements More Documents & Publications Communications Requirements of Smart Grid Technologies RE: NBP RFI: Communications Requirements

49

Effects of aerosol and horizontal inhomogeneity on the broadband albedo of marine stratus: Numerical simulations  

SciTech Connect (OSTI)

Recent estimates of the effect of increasing of anthropogenic sulfate aerosol on the radiative forcing of the atmosphere have indicated that its impact may be comparable in magnitude to the effect from increases in CO{sub 2}. Much of this impact is expected from the effects of the aerosol on cloud microphysics and the subsequent impact on cloud albedo. A solar broadband version of a 2D radiative transfer model was used to quantify the impact of enhanced aerosol concentrations and horizontal inhomogeneity on the solar broadband albedo of marine stratus. The results of the radiative transfer calculations indicated that in unbroken marine stratus clouds the net horizontal transport of photons over a domain of a few kilometers was nearly zero, and the domain-average broadband albedo computed in a 2D cross section was nearly identical to the domain average calculated from a series of independent pixel approximation (IPA) calculations of the same cross section. However, the horizontal inhomogeneity does affect the cloud albedo compared to plane-parallel approximation (PPA) computations due to the nonlinear relationship between albedo and optical depth. The reduction in cloud albedo could be related to the variability of the distribution of log (cloud optical depth). These results extend the finding of Cahalan et al. to broadband solar albedos in a more realistic cloud model and suggest that accurate computation of domain-averaged broadband albedos in unbroken (or nearly unbroken) marine stratus can be made using IPA calculations with 1D radiative transfer models. Computations of the mean albedo over portions of the 3D RAMS domain show the relative increase in cloud albedo due to a 67% increase in the boundary-layer average CCN concentration was between 6% and 9%. The effects of cloud inhomogeneity on the broadband albedo as measured from the PPA bias ranged from 3% to 5%. 25 refs., 8 figs., 4 tabs.

Duda, D.P.; Stephens, G.L.; Stevens, B.; Cotton, W.R. [Colorado State Univ., Fort Collins, CO (United States)] [Colorado State Univ., Fort Collins, CO (United States)

1996-12-15T23:59:59.000Z

50

ARM - Instrument - spn  

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

govInstrumentsspn govInstrumentsspn Documentation SPN : Instrument Mentor Monthly Summary (IMMS) reports SPN : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Sunshine Pyranometer (SPN) Instrument Categories Radiometric The Sunshine Pyranometer (SPN) measures total and diffuse short wave solar irradiance with an array of seven thermopile detectors arranged beneath a permanent shading pattern. The instrument is able to measure both total and diffuse irradiance with no moving parts. Primary Measurements The following measurements are those considered scientifically relevant. Shortwave broadband diffuse downwelling irradiance Shortwave broadband total downwelling irradiance

51

Implementing the National Broadband Plan by Empowering Consumers...  

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

Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy- Request for Information Implementing the National...

52

Broadband Diffractive Optics for Enhancing the Efficiency of Solar Cells  

Science Journals Connector (OSTI)

We propose a broadband diffractive optics based spectrum splitting approach to enhance the efficiency of solar cells. Numerical simulations indicate ~27% and ~45% increase in output...

Menon, Rajesh; Wang, Peng; Mohammed, Nabil

53

DOE Request for Information - Implementing the National Broadband...  

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

Request for Information - Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy DOE Request for Information...

54

Dielectric nanostructures for broadband light trapping in organic solar cells  

Science Journals Connector (OSTI)

We investigate broadband light trapping using only dielectric components to improve organic solar cell efficiency. We show that substantial absorption and photocurrent enhancement is...

Raman, Aaswath; Yu, Zongfu; Fan, Shanhui

55

Re: Implementing the National Broadband Plan by Studying the...  

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

Studying the Communications Requirements of Electric Utilities to Inform Federal Smart Grid Policy Re: Implementing the National Broadband Plan by Studying the Communications...

56

Re: DOE Request for Information - Implementing the National Broadband...  

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

the National Broadband Plan by Studying the Communications Requirements of Electric Utilities To Inform Federal Smart Grid Policy The Edison Electric Institute ("EEI"), on behalf...

57

Re: DOE Request for Information - Implementing the National Broadband...  

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

the National Broadband Plan by Studying the Communications Requirements of Electric Utilities To Inform Federal Smart Grid Policy (Federal RegisterVol.75, No.90Tuesday May 11,...

58

Re: DOE Request for Information - Implementing the National Broadband...  

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

the National Broadband Plan by Studying the Communications Requirements of Electric Utilities to Inform Federal Smart Grid Policy, which was published at 75 Federal Register...

59

Energy consumption of subscriber devices in broadband network  

Science Journals Connector (OSTI)

The paper provides estimates how deployment of fast fixed broadband may affect consumption of energy by subscriber's electronic devices. New subscribers are expected to buy additional equipment: PCs, laptops, TV sets, game consoles, etc. and more intensively ... Keywords: Broadband Access Network, Energy Consumption, Home Electronics, Next-Generation Access, Power Networks

Krzysztof Borzycki

2012-10-01T23:59:59.000Z

60

Identifying best practices for supporting broadband growth: Methodology and analysis  

E-Print Network [OSTI]

penetration rates focus on the preservation and extension of these rates. The main focus of this paper is to summarize the lessons learned from countries worldwide that present high broadband penetration rate data concerning broadband penetration, access technologies, market, prices and services for OECD

Bouras, Christos

Note: This page contains sample records for the topic "broadband pyranometer measurements" 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

Generating coherent broadband continuum soft-x-ray radiation by  

E-Print Network [OSTI]

Generating coherent broadband continuum soft-x-ray radiation by attosecond ionization gating Thomas as the driver for high-harmonic generation that has a cosine-like electric field stabilized with respect the generation of broadband and tunable attosecond pulses. Instead of fixing the carrier-envelope phase

Neumark, Daniel M.

62

BROADBAND IDENTIFICATION OF BATTERY ELECTRICAL IMPEDANCE FOR HEV  

E-Print Network [OSTI]

­ CEA LETI/LITEN; P. Granjon ­ GIPSA-Lab; Abstract -- In recent years, Li-ion batteries have been for the broadband monitoring of a battery. Keywords-- battery impedance, spectroscopy, broadband signals, Li-ion system of EV and HEV. Li-ion battery technology is believed to be the most attractive

Paris-Sud XI, Université de

63

Cascaded frequency doublers for broadband laser radiation  

SciTech Connect (OSTI)

A new scheme of a cascaded converter of the first harmonic of broadband cw laser radiation into the second harmonic (SH) with compensation for the group walk-off in cascades is proposed and investigated. The conditions under which high conversion coefficients of broadband ({approx}33 cm{sup -1}) single-mode fibre laser radiation with low peak power ({approx}300 W) into the SH are determined for frequency doublers based on the most promising LBO crystal. Conversion of cw radiation with an average power of 300 W and efficiency {eta} = 4.5 % into the SH is obtained in a single LBO crystal. Effect of coherent addition of SH radiation excited in different cascades is demonstrated for two- and three-stage schemes. The expected conversion efficiencies, calculated disregarding loss but taking into account real aberrations of elements, are 18 % and 38 %, respectively. The effect of pumping depletion begins to manifest itself in the third cascade of a three-stage converter; it may reduce the latter value to {approx}30 %. (nonlinear optical phenomena)

Andreev, N F; Vlasova, K V; Davydov, V S; Kulikov, S M; Makarov, A I; Sukharev, Stanislav A; Freidman, Gennadii I; Shubin, S V

2012-10-31T23:59:59.000Z

64

Microsoft Word - Measurement and Estima#4786.doc  

Open Energy Info (EERE)

R Ghosh R Ghosh 1 , S M Ullah, S K Khadem, N C Bhowmik and M Hussain Renewable Energy Research Center, University of Dhaka, Bangladesh E-mail: himuape@yahoo.com , rercdu@yahoo.com Abstract Sunshine duration recorders are widely used to estimate global radiation from sunshine duration data using Angstrom type correlations. The number of pyranometer stations that measure global radiation is inadequate in Bangladesh. 31 stations of Bangladesh Meteorological department records both sunshine duration and cloud cover data. A study of the data shows that 6 of the stations do not have satisfactory data for sunshine duration, while cloud cover data for all stations appear to be reasonably good. An attempt has therefore been taken to correlate cloud cover with sunshine duration to estimate sunshine hours for the 6

65

Broadband acoustic imaging of breaking waves  

Science Journals Connector (OSTI)

An acoustic array was deployed in the near?surface layer in Saanich Inlet BC to image breaking waves using only the naturally occurring acoustical radiation in the band (160 and 2000 Hz) from the breaking region. The 15?element array was configured as a horizontal cross with an 8?m aperture bottom?moored and positioned nominally 3 m beneath the surface. A novel broadband scheme combined information at six independent frequencies above about 400 Hz to yield unambiguous resolved images. A parametric image analysis shows that the images align closely with the wind and can be observed moving downwind with a speed roughly equal to the dominant phase speed of the wind waves. Absolute power levels are found to be consistent with previously published results. The data also provide inferences regarding the sound generation mechanism at ĎĎcollective oscillationíí frequencies below about 400 Hz. [Work supported by ONR.

Rex K. Andrew; David M. Farmer; R. Lynn Kirlin

1997-01-01T23:59:59.000Z

66

BroadBand Europe Geneva, Switzerland 11-14 December 2006  

E-Print Network [OSTI]

from countries worldwide that present high broadband penetration rate. The policies adopted broadband penetration rate (such as Greece) However, the high broadband penetration rate cannot alone stand for the emerging digital economy and competitiveness. The current situation concerning the broadband penetration

Bouras, Christos

67

Supporting Broadband Growth in an Interregional Level: The Case of Greece-Italy Partnership  

E-Print Network [OSTI]

to these data, EU27 average stands at 20.0%. Denmark and Finland led the European in broadband penetration rate broadband penetration at 9.1%) is far behind. Italy has a broadband penetration rate up to 17.1%, which lies just below the EU27average broadband penetration rate. It is important to mention that even though

Bouras, Christos

68

Fractal quantum well heterostructures for broadband light emitters  

SciTech Connect (OSTI)

We examine carrier relaxation and radiative recombination in AlGaAs based near IR and AlGaInP based visible fractal quantum well heterostructures. Through temperature dependent photoluminescence, we demonstrate that enhanced population of higher lying energy levels can be achieved by varying the thickness of the layers in the fractal heterostructurd. This distribution of carriers results in room temperature emission over a relatively broad range of wavelengths: approximately 700--855 nm for AlGaAs structures and 575--650 nm for AlGaInP structures. Spectra are compared to theoretical calculations to evaluate the non-equilibrium nature of the carrier distributions. Time resolved photoluminescence measurements demonstrate an approximately linear relationship between the radiative decay time and the layer thickness of the structure. Correspondingly, integrated luminescence measurements at room temperature reveal a factor of four increase in the light output efficiency of the structure as the fractal layer thickness is increased from 50 {angstrom} to 400 {angstrom}. The applicability of these heterostructures to broadband LEDs is discussed.

Crawford, M.H.; Gourley, P.L.; Meissner, K.E.; Sinclair, M.B.; Jones, E.D.; Chow, W.W.; Schneider, R.P. Jr.

1994-12-31T23:59:59.000Z

69

ARM - Evaluation Product - Broadband Heating Rate Profile Project (BBHRP)  

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

ProductsBroadband Heating Rate Profile Project ProductsBroadband Heating Rate Profile Project (BBHRP) Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Evaluation Product : Broadband Heating Rate Profile Project (BBHRP) 2000.03.01 - 2006.02.28 Site(s) SGP General Description The objective of the ARM Broadband Heating Rate Profile (BBHRP) Project is to provide a structure for the comprehensive assessment of our ability to model atmospheric radiative transfer for all conditions. Required inputs to BBHRP include surface albedo and profiles of atmospheric state (temperature, humidity), gas concentrations, aerosol properties, and cloud properties. In the past year, the Radiatively Important Parameters Best Estimate (RIPBE) VAP was developed to combine all of the input properties

70

Efficient Video-on-Demand Streaming for Broadband Access Networks  

Science Journals Connector (OSTI)

We introduce three important factors for efficient video-on-demand (VoD) streaming strategy in broadband access networks such as a passive optical network (PON): an efficient streaming...

Choi, Joonho; Yoo, Myungsik; Mukherjee, Biswanath

2010-01-01T23:59:59.000Z

71

Broadband Light Photon Echoes and Collisional Energy Transfers  

Science Journals Connector (OSTI)

Broadband (incoherent) light pulses can be characterized in the time domain by the pulse duration ? L and by the inverse of the spectral width i.e. the coherenc...

A. Dťbarre; J.-C. Keller; J.-L. Le GouŽt; P. Tchťnio

1987-01-01T23:59:59.000Z

72

An Instrument Design Concept for Measuring Solar Diffuse Irradiance  

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

An Instrument Design Concept for Measuring Solar Diffuse Irradiance An Instrument Design Concept for Measuring Solar Diffuse Irradiance Rutledge, Charles NASA Langley Research Center Schuster, Greg NASA Langley Research Center Category: Instruments Recent effort towards the development of a diffuse horizontal solar irradiance standard group [Michalsky et.al. 2005] using well calibrated pyranometers suggested that inter-instrument differences in cosine response characteristics may be problematic. They showed a calibration method using overcast skies (an approximately uniform radiance distribution) produced superior diffuse radiometer performance when compared to a calibration method using clear skies (which have a radiance distribution systematically varying from horizon to the near vicinity of the sun). The proposed instrument offers a significantly different basic design compared to

73

National Broadband Plan Request for Information: Communications Requirements  

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

Before the Before the Department of Energy Washington, D.C. 20585 In the Matter of National Broadband Plan Request for Information: Communications Requirements To: The Office of General Counsel COMMENTS OF THE AMERICAN PUBLIC POWER ASSOCIATION The American Public Power Association ("APPA") appreciates this opportunity to respond to the Department of Energy ("the Department" or "DOE") regarding its Request for Information ("RFI") on Implementing the National Broadband Plan by Studying the

74

stoffel-98.pdf  

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

5 5 Broadband and Spectral Irradiance Measurements at the Radiometer Calibration Facility During the 1997 Integrated Intensive Observation Period T. L. Stoffel National Renewable Energy Laboratory Golden, Colorado G. Hodges Cooperative Institute for Research in the Environmental Sciences Boulder, Colorado J. J. Michalsky State University of New York at Albany Albany, New York Summary A unique collection of broadband and spectral solar irradiance measurements was made at the Radiometer Calibration Facility (RCF) during the 1997 Integrated Intensive Observation Period (IOP). Absolute cavity radiometers, ultraviolet photometers, photosynthetically active radiation (PAR) photometers, pyranometers, pyrgeometers, and a scanning spectroradiometer were deployed at the Southern Great Plains (SGP) site to meet the

75

The Broadband Afterglow of GRB980329  

E-Print Network [OSTI]

We present radio observations of the afterglow of the bright gamma-ray burst GRB980329 made between one month and several years after the burst, a re-analysis of previously published submillimeter data, and late-time optical and near-infrared (NIR) observations of the host galaxy. From the absence of a spectral break in the optical/NIR colors of the host galaxy, we exclude the earlier suggestion that GRB980329 lies at a redshift of z >~5. We combine our data with the numerous multi-wavelength observations of the early afterglow, fit a comprehensive afterglow model to the entire broadband dataset, and derive fundamental physical parameters of the blast-wave and its host environment. Models for which the ejecta expand isotropically require both a high circumburst density and extreme radiative losses from the shock. No low density model (n << 10 cm^{-3}) fits the data. A burst with a total energy of ~ 10^{51} erg, with the ejecta narrowly collimated to an opening angle of a few degrees, driven into a surrounding medium with density ~ 20 cm^{-3}, provides a satisfactory fit to the lightcurves over a range of redshifts.

S. A. Yost; D. A. Frail; F. A. Harrison; R. Sari; D. Reichart; J. S. Bloom; S. R. Kulkarni; G. H. Moriarty-Schieven; S. G. Djorgovski; P. A. Price; R. W. Goodrich; J. E. Larkin; F. Walter; D. S. Shepherd; D. W. Fox; G. B. Taylor; E. Berger; T. J. Galama

2002-04-08T23:59:59.000Z

76

Near-resonance enhanced O2 detection for dual-broadband pure rotational coherent anti-Stokes Raman scattering with an ultraviolet-visible setup at 266 nm  

SciTech Connect (OSTI)

Broadband and dual-broadband coherent anti-Stokes Raman scattering (CARS) are widely established tools for nonintrusive gas diagnostics. Up to now the investigations have been mainly performed for electronic nonresonant conditions of the gas species of interest. We report on the enhancement of the O2-N2 detection limit of dual-broadband pure rotational CARS by shifting the wavelength of the narrowband pump laser from the commonly used 532-266 nm. This enhancement is caused when the Schumann-Runge absorption band is approached near 176 nm. The principal concept of this experiment, i.e., covering the Raman resonance with a single- or dual-broadband combination of lasers in the visible range and moving only the narrowband probe laser near or directly into electronic resonant conditions in the UV range, should also be applicable to broadband CARS experiments to directly exploit electronic resonance effects for the purpose of single-shot concentration measurements of minority species. To quantify the enhancement in O2 sensitivity, comparative measurements at both a 266 and a 532 nm narrowband pump laser wavelength are presented, employing a 4-dicyanomethylene-2-methyl-6-(p-dimethylaminostyryl)-4H-pyram (DCM) dye laser as a broadband laser source at 635 nm. An increase of approximately 13% in the ratio of the rotational CARS cross sections of O2 and N2 was obtained. The broad spectral width of the CARS excitation profile was approximately equal for both setups. Further enhancement should be achievable by shifting the narrowband pump laser closer toward 176 nm, for example, with a frequency-doubled optical parametric oscillator or an excimer laser. The principal concept of this experiment should also be applicable to broadband CARS experiments to directly exploit electronic resonance effects of the narrowband pump laser with electronic transitions of minority species for the purpose of single-shot concentration measurements of those species.

Schenk, Martin; Seeger, Thomas; Leipertz, Alfred

2005-07-01T23:59:59.000Z

77

Solar Resource Measurements in Cocoa, Florida (FSEC) - Equipment Loaned to NREL: Cooperative Research and Development Final Report, CRADA Number CRD-08-318  

SciTech Connect (OSTI)

Site-specific measurements of global and diffuse solar irradiance components, passively separated by alternate shading and unshading of a pyranometer mounted under a shading band with alternating opaque and open panels (for a site other than NREL) are needed to verify the underlying theory and mathematical techniques for developing direct, global and diffuse renewable resource data from such a system. These data are used for several research and development activities consistent with the NREL mission: Establish a national 30-year climatological database of measured solar irradiances; Support development of radiative transfer models for estimating solar irradiance from available meteorological observations; Provide solar resource information needed for technology deployment and operations. NREL will provide the supporting equipment (Shadow Bank Stand) for the specially designed shading band. FSEC will provide the calibrated pyranometer and perform data acquisition of the radiometer signal. Data acquired under this agreement will be shared with the NREL Principle Investigator for the purposes of validating techniques for estimating direct radiation from global and diffuse components measured with the ZEBRA system.

Stoffel, T.; Afshin, A.

2014-01-01T23:59:59.000Z

78

System and method for detection of dispersed broadband signals  

DOE Patents [OSTI]

A system and method for detecting the presence of dispersed broadband signals in real time are disclosed. The present invention utilizes a bank of matched filters for detecting the received dispersed broadband signals. Each matched filter uses a respective robust time template that has been designed to approximate the dispersed broadband signals of interest, and each time template varies across a spectrum of possible dispersed broadband signal time templates. The received dispersed broadband signal x(t) is received by each of the matched filters, and if one or more matches occurs, then the received data is determined to have signal data of interest. This signal data can then be analyzed and/or transmitted to Earth for analysis, as desired. The system and method of the present invention will prove extremely useful in many fields, including satellite communications, plasma physics, and interstellar research. The varying time templates used in the bank of matched filters are determined as follows. The robust time domain template is assumed to take the form w(t)=A(t)cos[l brace]2[phi](t)[r brace]. Since the instantaneous frequency f(t) is known to be equal to the derivative of the phase [phi](t), the trajectory of a joint time-frequency representation of x(t) is used as an approximation of [phi][prime](t). 10 figs.

Qian, S.; Dunham, M.E.

1999-06-08T23:59:59.000Z

79

System and method for detection of dispersed broadband signals  

DOE Patents [OSTI]

A system and method for detecting the presence of dispersed broadband signals in real time. The present invention utilizes a bank of matched filters for detecting the received dispersed broadband signals. Each matched filter uses a respective robust time template that has been designed to approximate the dispersed broadband signals of interest, and each time template varies across a spectrum of possible dispersed broadband signal time templates. The received dispersed broadband signal x(t) is received by each of the matched filters, and if one or more matches occurs, then the received data is determined to have signal data of interest. This signal data can then be analyzed and/or transmitted to Earth for analysis, as desired. The system and method of the present invention will prove extremely useful in many fields, including satellite communications, plasma physics, and interstellar research. The varying time templates used in the bank of matched filters are determined as follows. The robust time domain template is assumed to take the form w(t)=A(t)cos{2.phi.(t)}. Since the instantaneous frequency f(t) is known to be equal to the derivative of the phase .phi.(t), the trajectory of a joint time-frequency representation of x(t) is used as an approximation of .phi.'(t).

Qian, Shie (Austin, TX); Dunham, Mark E. (Los Alamos, NM)

1999-06-08T23:59:59.000Z

80

In situ broadband cryogenic calibration for two-port superconducting microwave resonators  

SciTech Connect (OSTI)

We introduce an improved microwave calibration method for use in a cryogenic environment, based on a traditional three-standard calibration, the Thru-Reflect-Line (TRL) calibration. The modified calibration method takes advantage of additional information from multiple measurements of an ensemble of realizations of a superconducting resonator, as a new pseudo-Open standard, to correct errors in the TRL calibration. We also demonstrate an experimental realization of this in situ broadband cryogenic calibration system utilizing cryogenic switches. All calibration measurements are done in the same thermal cycle as the measurement of the resonator (requiring only an additional 20 min), thus avoiding 4 additional thermal cycles for traditional TRL calibration (which would require an additional 12 days). The experimental measurements on a wave-chaotic microwave billiard verify that the new method significantly improves the measured scattering matrix of a high-quality-factor superconducting resonator.

Yeh, Jen-Hao; Anlage, Steven M. [Electrical and Computer Engineering Department, University of Maryland, College Park, Maryland 20742-3285 (United States); CNAM, Physics Department, University of Maryland, College Park, Maryland 20742-4111 (United States)

2013-03-15T23:59:59.000Z

Note: This page contains sample records for the topic "broadband pyranometer measurements" 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

Implementing the National Broadband Plan by Empowering Consumers and the  

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

Implementing the National Broadband Plan by Empowering Consumers Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy On May 11, 2010, the Department of Energy (DOE) published a Request for Information seeking comments and information from interested parties to assist DOE in understanding current and potential practices and policies for the states and other entities to empower consumers (and perhaps others) through access to detailed energy information in electronic form-including real-time information from smart meters, historical consumption data, and pricing and billing information. DOE will hold a public meeting as part of this request for information.

82

Re: National Broadband Plan (NBP) Request for Information: Data Access |  

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

National Broadband Plan (NBP) Request for Information: Data National Broadband Plan (NBP) Request for Information: Data Access Re: National Broadband Plan (NBP) Request for Information: Data Access Whirlpool Corporation is honored to have been chosen as a recipient of a U.S. Department of Energy's (DOE) Smart Grid Investment Grant program grant of $19.3 million over a two year period - which the company will match with its own investments. Whirlpool Corporation recently announced that in 2011 it would deliver one million U.S. manufactured smart dryers capable of reacting intelligently to signals from the smart grid by modifying their energy consumption to save consumers money on their home electric bills. In addition, the funds will complement the company's commitment that by 2015 all of the electronically controlled appliances it produces - everywhere in

83

Re: DOE Request for Information - Implementing the National Broadband  

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

DOE Request for Information - Implementing the National DOE Request for Information - Implementing the National Broadband Plan by Studying the Communications Requirements of Electric Utilities To Inform Federal Smart Grid Policy Re: DOE Request for Information - Implementing the National Broadband Plan by Studying the Communications Requirements of Electric Utilities To Inform Federal Smart Grid Policy The Edison Electric Institute ("EEI"), on behalf of its member companies, hereby submits the following comments in response to the Request for Information ("RFI") by the Department of Energy ("Department" or "DOE") regarding the current and future communications requirements of utilities, including, but not limited to, the requirements of the Smart Grid in an effort to implement certain recommendations of the National Broadband Plan.

84

A Broadband Tensorial Magnetotelluric Study In The Travale Geothermal Field  

Open Energy Info (EERE)

Broadband Tensorial Magnetotelluric Study In The Travale Geothermal Field Broadband Tensorial Magnetotelluric Study In The Travale Geothermal Field Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Broadband Tensorial Magnetotelluric Study In The Travale Geothermal Field Details Activities (0) Areas (0) Regions (0) Abstract: As a contribution to the EEC study of the potential contribution of electric and electromagnetic techniques to geothermal exploration, magnetotelluric studies have been undertaken with a sounding bandwidth ranging from 2 to 7 decades of period at more than 30 sites within the chosen test area of Travale. This area must be one of the most unfavourable for the application of electrical techniques on account both of the thickness (up to 2 km) of conducting (< 1 ohm / m in some locations) cover

85

Perfect and broadband acoustic absorption by critical coupling  

E-Print Network [OSTI]

We experimentally and analytically report broadband and narrowband perfect absorption in two different acoustic waveguide-resonator geometries by the mechanism of critical coupling. In the first geometry the resonator (a Helmholtz resonator) is side-loaded to the waveguide and it has a moderate quality factor. In the second geometry the resonator (a viscoelastic porous plate) is in-line loaded and it contains two resonant modes with low quality factor. The interplay between the energy leakage of the resonant modes into the waveguide and the inherent losses of the system reveals a perfect and a broadband nearly perfect absorption. The results shown in this work can motivate relevant research for the design of broadband perfect absorbers in other domains of wave physics.

Romero-GarcŪa, V; Richoux, O; Merkel, A; Tournat, V; Pagneux, V

2015-01-01T23:59:59.000Z

86

Measurement and Estimation of sunshine duration for Bangladesh | OpenEI  

Open Energy Info (EERE)

Measurement and Estimation of sunshine duration for Bangladesh Measurement and Estimation of sunshine duration for Bangladesh Dataset Summary Description (Abstract): Sunshine duration recorders are widely used to estimate global radiation from sunshine duration data using Angstrom type correlations. The number of pyranometer stations that measure global radiation is inadequate in Bangladesh. 31 stations of Bangladesh Meteorological department records both sunshine duration and cloud cover data. A study of the data shows that 6 of the stations do not have satisfactory data for sunshine duration, while cloud cover data for all stations appear to be reasonably good. An attempt has therefore been taken to correlate cloud cover with sunshine duration to estimate sunshine hours for the 6 stations. In this paper two methods have been used to estimate sunshine duration from cloud cover.

87

Characteristics of broadband lightning emissions associated with terrestrial gamma ray flashes  

E-Print Network [OSTI]

Characteristics of broadband lightning emissions associated with terrestrial gamma ray flashes] To characterize lightning processes that produce terrestrial gamma ray flashes (TGFs), we have analyzed broadband (lightning magnetic fields for TGFs detected by the Reuven Ramaty High Energy Solar

Cummer, Steven A.

88

Re: Implementing the National Broadband Plan by Studying the Communications  

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

Studying the Studying the Communications Requirements of Electric Utilities to Inform Federal Smart Grid Policy Re: Implementing the National Broadband Plan by Studying the Communications Requirements of Electric Utilities to Inform Federal Smart Grid Policy Alcatel-Lucent ("ALU") appreciates the opportunity to contribute to the Department of Energy's ("Department") Request for Information ("RFI")1 to better understand the communications requirements of utilities, including the requirements of Smart Grid Technology. ALU sees smart grid as one of several solutions offered by the technological advances and widespread deployment of broadband networks. While in its comments ALU addresses the narrow issues raised specifically in the Department's RFI, these comments also convey broader policy

89

Status of the Broadband Heating Rate Profile (BBHRP) VAP  

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

Status of the Broadband Heating Rate Profile (BBHRP) VAP Status of the Broadband Heating Rate Profile (BBHRP) VAP Mlawer, Eli Atmospheric & Environmental Research, Inc. Clough, Shepard Atmospheric and Environmental Research Delamere, Jennifer Atmospheric and Environmental Research, Inc. Miller, Mark Brookhaven National Laboratory Johnson, Karen Brookhaven National Laboratory Troyan, David Brookhaven National Laboratory Jensen, Michael Brookhaven National Laboratory Shippert, Timothy Pacific Northwest National Laboratory Long, Chuck Pacific Northwest National Laboratory Flynn, Connor Pacific Northwest National Laboratory Sivaraman, Chitra Pacific Northwest National Laboratory Turner, David University of Wisconsin-Madison Heck, Patrick University of Wisconsin Rutan, David Analytical Services & Materials, Inc.

90

The Quest for Ultimate Broadband High Power Microwaves  

E-Print Network [OSTI]

Paper describes High Power Microwave research of combining GW peak power to achieve MV/m and GV/m radiated fields in 1 to 500 GHz band. To achieve such fields multiple independently triggered broadband GW sources, supplying power to multiple spatially distributed broadband radiators/antennas are used. Single TW array is used as an ultimate microwave weapon in 1 to 5 GHz range while multiple TW arrays provide GV/m radiating field at plasma frequencies in 300 GHz range leading to fusion power.

Podgorski, Andrew S

2014-01-01T23:59:59.000Z

91

Analysis of Elephant Users in Broadband Network Traffic  

E-Print Network [OSTI]

Analysis of Elephant Users in Broadband Network Traffic P¬īeter Megyesi and S¬īandor Moln¬īar High,molnar}@tmit.bme.hu Abstract. Elephant and mice phenomena of network traffic flows have been an interesting research area is caused by a small percentage of large flows, called the elephants. In this paper, we investigate the same

Moln√°r, S√°ndor

92

Broadband Photodetector Based on Carbon Nanotube Fibers Simon Lee,1  

E-Print Network [OSTI]

UG-30 Broadband Photodetector Based on Carbon Nanotube Fibers Simon Lee,1 Xuan Wang absorption properties of the carbon nanotube fibers generate a thermal distribution across the length of applications of carbon nanotubes has been constantly expanding since its inception. From being a copper wire

93

Dielectric nanostructures for broadband light trapping in organic solar cells  

E-Print Network [OSTI]

Dielectric nanostructures for broadband light trapping in organic solar cells Aaswath Raman, Zongfu light trapping configuration for thin-film solar cells," Appl. Phys. Lett. 91, 243501 (2007). 8. M@stanford.edu Abstract: Organic bulk heterojunction solar cells are a promising candidate for low-cost next

Fan, Shanhui

94

New Frontiers in Solar Physics: Broadband Imaging Spectroscopy with the  

E-Print Network [OSTI]

, the solar panel of the AASC recommended an integrated suite of instrumentation designed to meetNew Frontiers in Solar Physics: Broadband Imaging Spectroscopy with the Frequency Agile Solar and other astrophysical objects and processes. Outstanding problems in solar physics include the magnetic

95

Implementing the National Broadband Plan by Empowering Consumers and the  

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

Privacy Privacy Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy On May 11, 2010, the Department of Energy (DOE) published a Request for Information seeking comments and information from interested parties to assist DOE in understanding current and potential practices and policies for the states and other entities to empower consumers (and perhaps others) through access to detailed energy information in electronic form-including real-time information from smart meters, historical consumption data, and pricing and billing information. DOE will hold a public meeting as part of this request for information. Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy

96

Broadband Longwave Radiative Cooling Rates in Inhomogeneous Stratocumulus Clouds  

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

Broadband Longwave Radiative Cooling Rates in Broadband Longwave Radiative Cooling Rates in Inhomogeneous Stratocumulus Clouds M. Ovtchinnikov and T. P. Ackerman Pacific Northwest National Laboratory Richland, Washington D. B. Mechem and Y. L. Kogan Cooperative Institute for Mesoscale Meteorological Studies University of Oklahoma Norman, Oklahoma R. F. Cahalan National Aeronautics and Space Administration Goddard Space Flight Center Greenbelt, Maryland A. B. Davis Los Alamos National Laboratory Los Alamos, New Mexico R. G. Ellingson and E. E.Takara Florida State University Tallahassee, Florida K. F. Evans University of Colorado Boulder, Colorado Introduction We are concerned with three-dimensional (3D) effects of longwave (LW) radiative transfer (RT) through inhomogeneous clouds. In cloud models, LW RT is typically calculated under the independent

97

Measurement  

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

localization that limits the present measurements. The knowledge thus gained will have input not only to fusion research, but to may ques- tions of basic plasma physics....

98

Measurement  

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

in the Department of Physics & Astronomy. Chapel Hill 2005 Approved: A. E. Champagne, Advisor J. C. Blackmon, Reader C. Iliadis, Reader ABSTRACT Ryan P. Fitzgerald: Measurement of...

99

wilcox-98.pdf  

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

3 3 Radiometer Calibrations at the ARM Southern Great Plains Radiometer Calibration Facility S. M. Wilcox and T. L. Stoffel National Renewable Energy Laboratory Golden, Colorado Introduction The Atmospheric Radiation Measurement (ARM) Program needs the most accurate broadband shortwave solar irradiance measurements possible. Precise radiometer calibrations are critical for producing accurate and comparable measurements. The Radiometer Calibration Facility (RCF) at the ARM Southern Great Plains (SGP) Central Facility (CF) is a state-of-the-art project, established with the purpose of calibrating the pyranometers and pyrheliometers used in the Solar and Infrared Observing System(SIROS)/Solar Infrared Radiation Stations (SIRS) network. The RCF is shown in Figure 1.

100

Conversion efficiency of broad-band rectennas for solar energy harvesting applications  

Science Journals Connector (OSTI)

Optical antennas have been proposed as an alternative option for solar energy harvesting. In this work the power conversion efficiency of broadband antennas, log-periodic,...

Briones, Edgar; Alda, Javier; GonzŠlez, Francisco Javier

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "broadband pyranometer measurements" 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

An Ultra-Scalable Broadband Architecture for Municipal Hybrid Wireless Access Using Optical Grid Network  

Science Journals Connector (OSTI)

A novel broadband architecture suitable for municipal hybrid wireless access is proposed. This architecture, called GROW-Net, is ultra-scalable in bandwidth support and infrastructure...

Shaw, Wei-Tao; Wong, Shing-Wa; Yen, She-Hwa; Kazovsky, Leonid G

102

Medium Voltage Overhead Power-line Broadband Communications; Transmission Capacity and Electromagnetic Interference  

E-Print Network [OSTI]

and Electromagnetic Interference P. Amirshahi and M. Kavehrad (FIEEE) The Pennsylvania State University, Department distribution networks for broadband power-line communications applications. Electromagnetic interference

Kavehrad, Mohsen

103

Re: NBP RFI-Implementing the National Broadband Plan by Studying...  

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

Studying the Communications Requirements of Electric Utilities to Inform Federal Smart Grid Policy Re: NBP RFI-Implementing the National Broadband Plan by Studying the...

104

E-Print Network 3.0 - amiba broadband heterodyne Sample Search...  

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

detectors with receiver noise temperatures of the Summary: Abstract - Broadband tunable, hot electron bolometer (HEB) heterodyne detectors with receiver noise... in this...

105

Broadband microwave burst produced by electron beams  

E-Print Network [OSTI]

Theoretical and experimental study of fast electron beams attracts a lot of attention in the astrophysics and laboratory. In the case of solar flares the problem of reliable beam detection and diagnostics is of exceptional importance. This paper explores the fact that the electron beams moving oblique to the magnetic field or along the field with some angular scatter around the beam propagation direction can generate microwave continuum bursts via gyrosynchrotron mechanism. The characteristics of the microwave bursts produced by beams differ from those in case of isotropic or loss-cone distributions, which suggests a new tool for quantitative diagnostics of the beams in the solar corona. To demonstrate the potentiality of this tool, we analyze here a radio burst occurred during an impulsive flare 1B/M6.7 on 10 March 2001 (AR 9368, N27W42). Based on detailed analysis of the spectral, temporal, and spatial relationships, we obtained firm evidence that the microwave continuum burst is produced by electron beams. For the first time we developed and applied a new forward fitting algorithm based on exact gyrosynchrotron formulae and employing both the total power and polarization measurements to solve the inverse problem of the beam diagnostics. We found that the burst is generated by a oblique beam in a region of reasonably strong magnetic field ($\\sim 200-300$ G) and the burst is observed at a quasi-transverse viewing angle. We found that the life time of the emitting electrons in the radio source is relatively short, $\\tau_l \\approx 0.5$ s, consistent with a single reflection of the electrons from a magnetic mirror at the foot point with the stronger magnetic field. We discuss the implications of these findings for the electron acceleration in flares and for beam diagnostics.

A. T. Altyntsev; G. D. Fleishman; G. -L. Huang; V. F. Melnikov

2007-12-16T23:59:59.000Z

106

Implementing the National Broadband Plan by Studying the Communications  

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

Studying the Studying the Communications Requirements of Electric Utilities To Inform Federal Smart Grid Policy Implementing the National Broadband Plan by Studying the Communications Requirements of Electric Utilities To Inform Federal Smart Grid Policy The Department of Energy (DOE) is seeking comments and information from interested parties to assist DOE in understanding the communications requirements of utilities, including, but not limited to, the requirements of the Smart Grid. This RFI also seeks to collect information about electricity infrastructure's current and projected communications requirements, as well as the types of networks and communications services that may be used for grid modernization. Specifically, DOE seeks information on what types of communications capabilities that the utilities

107

Feasibility study of broadband efficient ''water window'' source  

SciTech Connect (OSTI)

We demonstrate a table-top broadband emission water window source based on laser-produced high-Z plasmas. Resonance emission from multiply charged ions merges to produce intense unresolved transition arrays (UTAs) in the 2-4 nm region, extending below the carbon K edge (4.37 nm). Arrays resulting from n=4-n=4 transitions are overlaid with n=4-n=5 emission and shift to shorter wavelength with increasing atomic number. An outline of a microscope design for single-shot live cell imaging is proposed based on a bismuth plasma UTA source, coupled to multilayer mirror optics.

Higashiguchi, Takeshi; Yugami, Noboru [Department of Advanced Interdisciplinary Sciences, Center for Optical Research and Education (CORE), and Optical Technology Innovation Center (OpTIC), Utsunomiya University, Yoto 7-1-2, Utsunomiya, Tochigi 321-8585 (Japan); Japan Science and Technology Agency, CREST, 4-1-8 Honcho, Kanagawa, Saitama 332-0012 (Japan); Otsuka, Takamitsu [Department of Advanced Interdisciplinary Sciences, Center for Optical Research and Education (CORE), and Optical Technology Innovation Center (OpTIC), Utsunomiya University, Yoto 7-1-2, Utsunomiya, Tochigi 321-8585 (Japan); Jiang Weihua [Department of Electrical Engineering, Nagaoka University of Technology, Kami-tomiokamachi 1603-1, Nagaoka, Niigata 940-2188 (Japan); Endo, Akira [Research Institute for Science and Engineering, Waseda University, Okubo 3-4-1, Shinjuku, Tokyo 169-8555 (Japan); Li Bowen; Dunne, Padraig; O'Sullivan, Gerry [School of Physics, University College Dublin, Belfield, Dublin 4 (Ireland)

2012-01-02T23:59:59.000Z

108

hagan-99.PDF  

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

Compact Spectral Radiometer for In Situ Solar Flux Compact Spectral Radiometer for In Situ Solar Flux Measurements D. E. Hagan, M. Foote, J.-F. Blavier, L. Wild, and E. Jones Jet Propulsion Laboratory California Institute of Technology Pasadena, California Introduction We describe here the breadboard version of a lightweight, compact radiometer, which uses microthermopile detectors for hemispheric measurements of broadband and spectral downwelling solar irradiance. The instrument has undergone initial operability tests, and some limited field characterization has been performed against an Eppley Precision Spectral Pyranometer (PSP). The radiometer has a unique combination of characteristics that allow it to provide scientific data not easily available with any other technique. These characteristics include:

109

Efficient broadband energy transfer via momentum matching at hybrid junctions of guided-waves  

E-Print Network [OSTI]

Efficient broadband energy transfer via momentum matching at hybrid junctions of guided://apl.aip.org/about/rights_and_permissions #12;Efficient broadband energy transfer via momentum matching at hybrid junctions of guided, The American University in Cairo, New Cairo 11835, Egypt (Received 2 August 2012; accepted 5 September 2012

110

Novel Feeding Topologies for 2nd Harmonic Suppression in Broadband Microstrip Patch Antennas  

E-Print Network [OSTI]

Novel Feeding Topologies for 2nd Harmonic Suppression in Broadband Microstrip Patch Antennas *Il harmonic suppression property, while allowing for a broadband operation of microstrip patch antennas as well as a good 2nd harmonic suppression property. I. Introduction Microstrip patch antennas are very

Tentzeris, Manos

111

The FAST Copper Project: Fundamental Research in Fiber/DSL Broadband Access  

E-Print Network [OSTI]

1 The FAST Copper Project: Fundamental Research in Fiber/DSL Broadband Access Yung Yi, Dahai Xu Abstract This is an overview of the ongoing FAST Copper project, which aims at at substantial improvements in rate, reach, reliability, and quality in copper-last-mile broadband access through fiber/DSL deployment

Yi, Yung

112

Broadband Heating Rate Profile Project (BBHRP) - SGP ripbe1mcfarlane  

SciTech Connect (OSTI)

The objective of the ARM Broadband Heating Rate Profile (BBHRP) Project is to provide a structure for the comprehensive assessment of our ability to model atmospheric radiative transfer for all conditions. Required inputs to BBHRP include surface albedo and profiles of atmospheric state (temperature, humidity), gas concentrations, aerosol properties, and cloud properties. In the past year, the Radiatively Important Parameters Best Estimate (RIPBE) VAP was developed to combine all of the input properties needed for BBHRP into a single gridded input file. Additionally, an interface between the RIPBE input file and the RRTM was developed using the new ARM integrated software development environment (ISDE) and effort was put into developing quality control (qc) flags and provenance information on the BBHRP output files so that analysis of the output would be more straightforward. This new version of BBHRP, sgp1bbhrpripbeC1.c1, uses the RIPBE files as input to RRTM, and calculates broadband SW and LW fluxes and heating rates at 1-min resolution using the independent column approximation. The vertical resolution is 45 m in the lower and middle troposphere to match the input cloud properties, but is at coarser resolution in the upper atmosphere. Unlike previous versions, the vertical grid is the same for both clear-sky and cloudy-sky calculations.

Riihimaki, Laura; Shippert, Timothy

2014-11-05T23:59:59.000Z

113

Broadband Heating Rate Profile Project (BBHRP) - SGP ripbe370mcfarlane  

SciTech Connect (OSTI)

The objective of the ARM Broadband Heating Rate Profile (BBHRP) Project is to provide a structure for the comprehensive assessment of our ability to model atmospheric radiative transfer for all conditions. Required inputs to BBHRP include surface albedo and profiles of atmospheric state (temperature, humidity), gas concentrations, aerosol properties, and cloud properties. In the past year, the Radiatively Important Parameters Best Estimate (RIPBE) VAP was developed to combine all of the input properties needed for BBHRP into a single gridded input file. Additionally, an interface between the RIPBE input file and the RRTM was developed using the new ARM integrated software development environment (ISDE) and effort was put into developing quality control (qc) flags and provenance information on the BBHRP output files so that analysis of the output would be more straightforward. This new version of BBHRP, sgp1bbhrpripbeC1.c1, uses the RIPBE files as input to RRTM, and calculates broadband SW and LW fluxes and heating rates at 1-min resolution using the independent column approximation. The vertical resolution is 45 m in the lower and middle troposphere to match the input cloud properties, but is at coarser resolution in the upper atmosphere. Unlike previous versions, the vertical grid is the same for both clear-sky and cloudy-sky calculations.

Riihimaki, Laura; Shippert, Timothy

2014-11-05T23:59:59.000Z

114

Broadband Heating Rate Profile Project (BBHRP) - SGP ripbe1mcfarlane  

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

The objective of the ARM Broadband Heating Rate Profile (BBHRP) Project is to provide a structure for the comprehensive assessment of our ability to model atmospheric radiative transfer for all conditions. Required inputs to BBHRP include surface albedo and profiles of atmospheric state (temperature, humidity), gas concentrations, aerosol properties, and cloud properties. In the past year, the Radiatively Important Parameters Best Estimate (RIPBE) VAP was developed to combine all of the input properties needed for BBHRP into a single gridded input file. Additionally, an interface between the RIPBE input file and the RRTM was developed using the new ARM integrated software development environment (ISDE) and effort was put into developing quality control (qc) flags and provenance information on the BBHRP output files so that analysis of the output would be more straightforward. This new version of BBHRP, sgp1bbhrpripbeC1.c1, uses the RIPBE files as input to RRTM, and calculates broadband SW and LW fluxes and heating rates at 1-min resolution using the independent column approximation. The vertical resolution is 45 m in the lower and middle troposphere to match the input cloud properties, but is at coarser resolution in the upper atmosphere. Unlike previous versions, the vertical grid is the same for both clear-sky and cloudy-sky calculations.

Riihimaki, Laura; Shippert, Timothy

115

Broadband Heating Rate Profile Project (BBHRP) - SGP ripbe370mcfarlane  

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

The objective of the ARM Broadband Heating Rate Profile (BBHRP) Project is to provide a structure for the comprehensive assessment of our ability to model atmospheric radiative transfer for all conditions. Required inputs to BBHRP include surface albedo and profiles of atmospheric state (temperature, humidity), gas concentrations, aerosol properties, and cloud properties. In the past year, the Radiatively Important Parameters Best Estimate (RIPBE) VAP was developed to combine all of the input properties needed for BBHRP into a single gridded input file. Additionally, an interface between the RIPBE input file and the RRTM was developed using the new ARM integrated software development environment (ISDE) and effort was put into developing quality control (qc) flags and provenance information on the BBHRP output files so that analysis of the output would be more straightforward. This new version of BBHRP, sgp1bbhrpripbeC1.c1, uses the RIPBE files as input to RRTM, and calculates broadband SW and LW fluxes and heating rates at 1-min resolution using the independent column approximation. The vertical resolution is 45 m in the lower and middle troposphere to match the input cloud properties, but is at coarser resolution in the upper atmosphere. Unlike previous versions, the vertical grid is the same for both clear-sky and cloudy-sky calculations.

Riihimaki, Laura; Shippert, Timothy

116

DOE Takes Steps to Implement the National Broadband Plan | Department of  

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

Takes Steps to Implement the National Broadband Plan Takes Steps to Implement the National Broadband Plan DOE Takes Steps to Implement the National Broadband Plan May 11, 2010 - 12:54pm Addthis The Department of Energy has announced that it is taking steps to implement energy-related recommendations included in the National Broadband Plan, released by the Federal Communications Commission (FCC) in March. The plan included recommendations on a wide range of topics from expanding internet access to modernizing health information to integrating broadband technologies with the Smart Grid. DOE is taking the lead in assessing best practices for providing consumers access to energy data, along with studying the communications requirements of electric utilities to help inform federal Smart Grid policy. As part of the process of implementing these recommendations, the

117

Microsoft Word - Broadband Over Power Lines_FINAL.06.01.10.doc  

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

Broadband over Powerlines Can Accelerate the Transmission Smart Grid Broadband over Powerlines Can Accelerate the Transmission Smart Grid May 25, 2010 DOE/NETL-2010/1418 Broadband Over Power Lines Could Accelerate the Transmission Smart Grid Broadband Over Power Lines Could Accelerate the Transmission Smart Grid 1 Prepared by: Booz Allen Hamilton (BAH) Bruce Renz Renz Consulting, LLC DOE Contract number: DE-FE000400 Broadband Over Power Lines Could Accelerate the Transmission Smart Grid 2 Acknowledgements This report was prepared by Booz Allen Hamilton, Inc. (BAH) for the United States Department of Energy's National Energy Technology Laboratory. This work was completed under DOE NETL Contract Number DE-FE000400, and performed under BAH Task 430.04. The authors wish to acknowledge the excellent guidance, contributions, and cooperation of the

118

High-Voltage Broadband-Over-Powerline (HV-BPL) Field Test Report | Open  

Open Energy Info (EERE)

High-Voltage Broadband-Over-Powerline (HV-BPL) Field Test Report High-Voltage Broadband-Over-Powerline (HV-BPL) Field Test Report Jump to: navigation, search Tool Summary LAUNCH TOOL Name: High-Voltage Broadband-Over-Powerline (HV-BPL) Field Test Report Focus Area: Crosscutting Topics: Policy Impacts Website: www.netl.doe.gov/smartgrid/referenceshelf/reports/HV-BPL_Final_Report. Equivalent URI: cleanenergysolutions.org/content/high-voltage-broadband-over-powerline Language: English Policies: "Deployment Programs,Financial Incentives" is not in the list of possible values (Deployment Programs, Financial Incentives, Regulations) for this property. DeploymentPrograms: Technical Assistance This reports details findings from a pilot High Voltage Broadband over Power Line (HV-BPL) program, an effort to develop a disruptive technology

119

The U.S. Market For Broadband Over Powerline, 3. edition  

SciTech Connect (OSTI)

The report provides a study of the potential market for BPL technology in the U.S. including a look at the past, present, and future state of Broadband Over Powerline (BPL) in the U.S. The Scope of the report includes the following topics: a description of the history of powerline communications (PLC) and broadband over powerline (BPL) technology; an analysis of key drivers of BPL within the electric utility and internet access industries; an overview of BPL technology and architecture; a comparison of BPL with alternative broadband access methods; an analysis of technological, regulatory, and business barriers to BPL's success; identification of the key applications and markets for BPL; a description of business models for BPL; an analysis of key market trends in broadband internet access; a review of the market development of cable modem broadband access; profiles of major U.S. BPL market participants; and, profiles of major U.S. BPL projects.

NONE

2007-07-15T23:59:59.000Z

120

A broadband microwave Corbino spectrometer at $^3$He temperatures and high magnetic fields  

E-Print Network [OSTI]

We present the technical details of a broadband microwave spectrometer for measuring the complex conductance of thin films covering the range from 50 MHz up to 16 GHz in the temperature range 300 mK to 6 K and at applied magnetic fields up to 8 Tesla. We measure the complex reflection from a sample terminating a coaxial transmission line and calibrate the signals with three standards with known reflection coefficients. Thermal isolation of the heat load from the inner conductor is accomplished by including a section of NbTi superconducting cable (transition temperature around 8 $-$ 9 K) and hermetic seal glass bead adapters. This enables us to stabilize the base temperature of the sample stage at 300 mK. However, the inclusion of this superconducting cable complicates the calibration procedure. We document the effects of the superconducting cable on our calibration procedure and the effects of applied magnetic fields and how we control the temperature with great repeatability for each measurement. We have suc...

Liu, Wei; Armitage, N P

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "broadband pyranometer measurements" 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

Re: Implementing the National Broadband Plan by Empowering Consumers and  

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

Empowering Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy Re: Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy Exelon Corporation (Exelon) hereby submits the following comments in response to the request by the Department of Energy ("DOE" or "Department") for information on state efforts to enact Smart Grid privacy and data collection policies; utility practices and policies regarding data access and collection; third party access to detailed energy information; the role of the consumer in balancing benefits of data access and privacy; and policies and practices that should guide policymakers in determining who can access consumer energy information and under what conditions.1 Exelon

122

Calculated secondary yields for proton broadband using DECAY TURTLE  

SciTech Connect (OSTI)

The calculations for the yields were done by Al Sondgeroth and Anthony Malensek. The authors used the DECAY deck called PBSEC{_}E.DAT from the CMS DECKS library. After obtaining the run modes and calibration modes from the liaison physicist, they made individual decay runs, using DECAY TURTLE from the CMS libraries and a production spectrum subroutine which was modified by Anthony, for each particle and decay mode for all particle types coming out of the target box. Results were weighted according to branching ratios for particles with more than one decay mode. The production spectra were produced assuming beryllium as the target. The optional deuterium target available to broadband will produce slightly higher yields. It should be noted that they did not include pion yields from klong decays because they could not simulate three body decays. Pions from klongs would add a very small fraction to the total yield.

Sondgeroth, A.

1995-02-01T23:59:59.000Z

123

Broadband Excitation and Active Control of Terahertz Plasmons in Graphene  

E-Print Network [OSTI]

A novel broadband technique to effectively launch plasmons along a single graphene layer at terahertz (THz) frequencies is proposed. To this end, the coupling of the electromagnetic wave from a readily available plasmonic waveguide established by a periodically corrugated metallic surface to the graphene sheet is proposed. As will be shown, this technique can significantly surmount the need for efficient excitation of plasmons in graphene. For this purpose, an analytical technique based on transmission line theory is employed to calculate the scattering parameters of the connection of the plasmonic waveguides. In this manner, the gating effects of the graphene waveguide on the input reflection and transmission of the junction are also investigated. For comparison, a full wave numerical simulator is employed.

Khorrami, Mohammad Ali

2014-01-01T23:59:59.000Z

124

Quantitative broadband absorption and scattering spectroscopy in turbid media by combined frequency-domain and steady state methodologies  

DOE Patents [OSTI]

A technique for measuring broadband near-infrared absorption spectra of turbid media that uses a combination of frequency-domain and steady-state reflectance methods. Most of the wavelength coverage is provided by a white-light steady-state measurement, whereas the frequency-domain data are acquired at a few selected wavelengths. Coefficients of absorption and reduced scattering derived from the frequency-domain data are used to calibrate the intensity of the steady-state measurements and to determine the reduced scattering coefficient at all wavelengths in the spectral window of interest. The absorption coefficient spectrum is determined by comparing the steady-state reflectance values with the predictions of diffusion theory, wavelength by wavelength. Absorption spectra of a turbid phantom and of human breast tissue in vivo, derived with the combined frequency-domain and steady-state technique, agree well with expected reference values.

Tromberg, Bruce J. (Irvine, CA); Berger, Andrew J. (Rochester, NY); Cerussi, Albert E. (Lake Forest, CA); Bevilacqua, Frederic (Costa Mesa, CA); Jakubowski, Dorota (Irvine, CA)

2008-09-23T23:59:59.000Z

125

BROADBAND SPECTRAL INVESTIGATIONS OF SGR J1550-5418 BURSTS  

SciTech Connect (OSTI)

We present the results of our broadband spectral analysis of 42 SGR J1550-5418 bursts simultaneously detected with the Swift/X-ray Telescope (XRT) and the Fermi/Gamma-ray Burst Monitor (GBM), during the 2009 January active episode of the source. The unique spectral and temporal capabilities of the XRT windowed timing mode have allowed us to extend the GBM spectral coverage for these events down to the X-ray domain (0.5-10 keV). Our earlier analysis of the GBM data found that the SGR J1550-5418 burst spectra were described equally well with either a Comptonized model or with two blackbody functions; the two models were statistically indistinguishable. Our new broadband (0.5-200 keV) spectral fits show that, on average, the burst spectra are better described with two blackbody functions than with the Comptonized model. Thus, our joint XRT-GBM analysis clearly shows for the first time that the SGR J1550-5418 burst spectra might naturally be expected to exhibit a more truly thermalized character, such as a two-blackbody or even a multi-blackbody signal. Using the Swift and RXTE timing ephemeris for SGR J1550-5418 we construct the distribution of the XRT burst counts with spin phase and find that it is not correlated with the persistent X-ray emission pulse phase from SGR J1550-5418. These results indicate that the burst emitting sites on the neutron star need not to be co-located with hot spots emitting the bulk of the persistent X-ray emission. Finally, we show that there is a significant pulse phase dependence of the XRT burst counts, likely demonstrating that the surface magnetic field of SGR J1550-5418 is not uniform over the emission zones, since it is anticipated that regions with stronger surface magnetic field could trigger bursts more efficiently.

Lin Lin; Goegues, Ersin; Kaneko, Yuki [Faculty of Engineering and Natural Sciences, Sabanc Latin-Small-Letter-Dotless-I University, Orhanl Latin-Small-Letter-Dotless-I Tuzla, Istanbul 34956 (Turkey); Baring, Matthew G. [Department of Physics and Astronomy, Rice University, MS-108, P.O. Box 1892, Houston, TX 77251 (United States); Granot, Jonathan [Racah Institute of Physics, Hebrew University, Jerusalem 91904 (Israel); Kouveliotou, Chryssa [Space Science Office, VP62, NASA/Marshall Space Flight Center, Huntsville, AL 35812 (United States); Van der Horst, Alexander; Watts, Anna L. [Astronomical Institute 'Anton Pannekoek', University of Amsterdam, Postbus 94249, 1090 GE Amsterdam (Netherlands); Gruber, David; Von Kienlin, Andreas [Max-Planck-Institut fuer extraterrestrische Physik, Postfach 1312, D-85748 Garching bei Mnchen (Germany); Younes, George [USRA, National Space Science and Technology Center, 320 Sparkman Drive, Huntsville, AL 35805 (United States); Gehrels, Neil, E-mail: linlin@sabanciuniv.edu [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)

2012-09-01T23:59:59.000Z

126

Broadband three-photon near-infrared quantum cutting in Tm{sup 3+} singly doped YVO{sub 4}  

SciTech Connect (OSTI)

An efficient three-photon near-infrared (NIR) quantum cutting (QC) is reported in Tm{sup 3+} singly doped YVO{sub 4} polycrystalline phosphors, where an optimized content of Tm{sup 3+} is determined to be 1.0?mol. %. Upon the absorption of a visible photon around 473?nm, three NIR photons emitting at 1180, 1479, and 1800?nm can be obtained efficiently by the sequential three-step radiative transitions of Tm{sup 3+}. The underlying mechanisms are analyzed in terms of the steady and dynamic fluorescence spectra measurements. Internal quantum yield is calculated to be 161.8% as a theoretical value when luminescence quenching due to defect species can be overcome. In addition, the broadband ultraviolet (UV)-excited [VO{sub 4}]{sup 3?} can strongly sensitize the {sup 1}G{sub 4} level of Tm{sup 3+} in the wavelength range likely from 250 to 360?nm, greatly increasing the UV photo-response and NIR fluorescent intensity of Tm{sup 3+}. The further development of this broadband three-photon NIR QC material would explore the new route to improve the photo-response of novel photoelectronic devices, particularly in 250Ė360?nm.

Wang, Y. Z.; Yu, D. C.; Lin, H. H.; Ye, S.; Peng, M. Y.; Zhang, Q. Y., E-mail: qyzhang@scut.edu.cn [State Key Laboratory of Luminescence Materials and Devices, and Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510641 (China)

2013-11-28T23:59:59.000Z

127

Re: NBP RFI-Implementing the National Broadband Plan by Studying the  

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

Re: NBP RFI-Implementing the National Broadband Plan by Studying Re: NBP RFI-Implementing the National Broadband Plan by Studying the Communications Requirements of Electric Utilities to Inform Federal Smart Grid Policy Re: NBP RFI-Implementing the National Broadband Plan by Studying the Communications Requirements of Electric Utilities to Inform Federal Smart Grid Policy The Telecommunications Industry Association (TIA) is pleased to provide comments on the communications requirements of electric utilities relevant to smart grid policy. TIA appreciates the proactive role the Department of Energy (DOE) is taking in executing the recommendations from the FCC in the National Broadband Plan. Electric utilities and the ICT industry share a long tradition of partnering to build and maintain the communications networks contributing to the security and reliability of the grid.

128

Re: NBP RFI-Implementing the National Broadband Plan by Studying the  

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

Re: NBP RFI-Implementing the National Broadband Plan by Studying Re: NBP RFI-Implementing the National Broadband Plan by Studying the Communications Requirements of Electric Utilities to Inform Federal Smart Grid Policy Re: NBP RFI-Implementing the National Broadband Plan by Studying the Communications Requirements of Electric Utilities to Inform Federal Smart Grid Policy The Telecommunications Industry Association (TIA) is pleased to provide comments on the communications requirements of electric utilities relevant to smart grid policy. TIA appreciates the proactive role the Department of Energy (DOE) is taking in executing the recommendations from the FCC in the National Broadband Plan. Electric utilities and the ICT industry share a long tradition of partnering to build and maintain the communications networks contributing to the security and reliability of the grid.

129

Re: NBP RFI-Implementing the National Broadband Plan by Empowering...  

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

Empowering Consumers and the Smart Grid: Data Access, Third Party Use and Privacy Re: NBP RFI-Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid:...

130

2010 Telecommunications Policy Research Conference The FCC Plan for a Public Safety Broadband Wireless Network  

E-Print Network [OSTI]

2010 Telecommunications Policy Research Conference 1 The FCC Plan for a Public Safety Broadband;2010 Telecommunications Policy Research Conference 2 In March 2010, the U.S. Federal Communications Commission (FCC

Peha, Jon M.

131

Acoustic scattering of broadband echolocation signals from prey of Blainville's beaked whales : modeling and analysis  

E-Print Network [OSTI]

Blainville's beaked whales (Mesoplodon densirostris) use broadband, ultrasonic echolocation signals (27 to 57 kHz) to search for, localize, and approach prey that generally consist of mid-water and deep-water fishes and ...

Jones, Benjamin A. (Benjamin Aaron)

2006-01-01T23:59:59.000Z

132

Radiative Effects of Dust Aerosols, Natural Cirrus Clouds and Contrails: Broadband Optical Properties and Sensitivity Studies  

E-Print Network [OSTI]

This dissertation aims to study the broadband optical properties and radiative effects of dust aerosols and ice clouds. It covers three main topics: the uncertainty of dust optical properties and radiative effects from the dust particle shape...

Yi, Bingqi

2013-07-09T23:59:59.000Z

133

Theory and design of integrated optical isolators and broadband couplers using Fresnel zone plates  

E-Print Network [OSTI]

This thesis is divided into two main sections: the first containing the analysis of the broadband vertical coupler, and the second involving the theory and design of the integrated optical isolators. In the first part we ...

Cordova, Brad Gilbert

2013-01-01T23:59:59.000Z

134

Widely-tunable femtosecond operation of Cr:LiSAF lasers using broadband saturable bragg reflectors  

E-Print Network [OSTI]

We describe a low-cost diode-pumped Cr:LiSAF laser, mode-locked using a broadband saturable Bragg reflector. The laser produces continuously tunable sub-200-fs pulses from 800 nm to 905 nm.

Demirbas, Umit

135

Optimization of Two-photon Excited Fluorescence Enhancement between Tunable and Broadband Femtosecond Laser Pulse Excitations  

E-Print Network [OSTI]

This project explores optimization of two-photon excited fluorescence (TPEF) enhancement between tunable narrowband and un-tuned broadband femtosecond (fs) laser pulse excitations for two-photon microscopy (TPM). The research is conducted...

Wang, Chao

2012-02-14T23:59:59.000Z

136

Michalsky-JJ  

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

Accuracy of Broadband Shortwave Irradiance Accuracy of Broadband Shortwave Irradiance Measurements Using the Open Silicon Channel of the MFRSR J. J. Michalsky State University of New York Albany, New York Introduction The best routine Atmospheric Radiation Measurement (ARM) Program measurement of downwelling irradiance in the total shortwave band is a sum of diffuse horizontal irradiance and the direct normal irradiance component that is incident horizontally (diffuse horizontal). The latter is obtained by multiplying the direct normal irradiance by the cosine of the solar zenith angle. Ideally, these measurements are made with a near-zero-offset, shaded, thermopile pyranometer and a thermopile pyrheliometer, respectively. At each central and extended facility within the ARM Program, the shaded

137

reda(2)-99.PDF  

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

Improving the Accuracy of Using Pyranometers to Improving the Accuracy of Using Pyranometers to Measure the Clear Sky Global Solar Irradiance I. Reda National Renewable Energy Laboratory Golden, Colorado Abstract Pyranometer users have customarily applied one responsivity value when calculating the global solar irradiance. Usually, the responsivity value is reported by either the manufacturer or a calibration facility. Many pyranometer calibrations, made at the National Renewable Energy Laboratory (NREL) and elsewhere, have shown that the responsivity of a pyranometer changes with the change in solar zenith and azimuth angles. Depending on how well the pyranometer sensor is radiometrically leveled, these changes can exceed "5% of the reported responsivity, which means that errors in the calculated

138

Broadband Model Performance for an Updated National Solar Radiation Database in the United States of America: Preprint  

SciTech Connect (OSTI)

Updated review of broadband model performance in a project being done to update the existing United States National Solar Radiation Database (NSRDB).

Myers, D. R.; Wilcox, S.; Marion, W.; George, R.; Anderberg, M.

2005-09-01T23:59:59.000Z

139

Broadband and Monochromatic X-ray Irradiation of Platinum: Monte Carlo Simulations for Dose Enhancement Factors and Resonant Theranostics  

Science Journals Connector (OSTI)

Introduction:...X-ray irradiation of heavy-element (high-Z) nanomaterials as radiosensitizing agents should be extremely efficient for therapy and diagnostics (theranostics). However, broadband rad...

S. Lim; M. Montenegro; A. K. PradhanÖ

2013-01-01T23:59:59.000Z

140

Broadband omnidirectional antireflection coatings for metal-backed solar cells optimized using simulated annealing algorithm incorporated with solar spectrum  

Science Journals Connector (OSTI)

Broadband omnidirectional antireflection (AR) coatings for solar cells optimized using simulated annealing (SA) algorithm incorporated with the solar (irradiance) spectrum at Earthís...

Chang, Yin-Jung; Chen, Yu-Ting

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "broadband pyranometer measurements" 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

Comparison of M46 broad-band visible data with ELF data from the Sprites `96 campaign  

SciTech Connect (OSTI)

Lightning data, recorded with satellite optical sensors, are compared with extremely low frequency (ELF) and Schumann resonance (SR) data from the Sprites `96 Campaign. The satellite data are broad-band visible events recorded by the M46 satellite payload. Full width at half maximum and optical tail durations from the satellite data are compared with ELF slow tail features and Schumann resonance spectral color. In addition, continuing current estimates were computed for several positive cloud-to-ground (PCG) strokes. These estimates were derived using relative optical intensities from the satellite data and a peak current measurement from National Lightning Detection Network (NLDN) data. This assessment of M46 lightning data supports correlations between visible and ELF signatures. More data must be studied for compelling proof.

Mitchell, E.A.

1997-10-01T23:59:59.000Z

142

NREL Solar Radiation Research Laboratory (SRRL): Baseline Measurement System (BMS); Golden, Colorado (Data)  

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

The SRRL was established at the Solar Energy Research Institute (now NREL) in 1981 to provide continuous measurements of the solar resources, outdoor calibrations of pyranometers and pyrheliometers, and to characterize commercially available instrumentation. The SRRL is an outdoor laboratory located on South Table Mountain, a mesa providing excellent solar access throughout the year, overlooking Denver. Beginning with the basic measurements of global horizontal irradiance, direct normal irradiance and diffuse horizontal irradiance at 5-minute intervals, the SRRL Baseline Measurement System now produces more than 130 data elements at 1-min intervals that are available from the Measurement & Instrumentation Data Center Web site. Data sources include global horizontal, direct normal, diffuse horizontal (from shadowband and tracking disk), global on tilted surfaces, reflected solar irradiance, ultraviolet, infrared (upwelling and downwelling), photometric and spectral radiometers, sky imagery, and surface meteorological conditions (temperature, relative humidity, barometric pressure, precipitation, snow cover, wind speed and direction at multiple levels). Data quality control and assessment include daily instrument maintenance (M-F) with automated data quality control based on real-time examinations of redundant instrumentation and internal consistency checks using NREL's SERI-QC methodology. Operators are notified of equipment problems by automatic e-mail messages generated by the data acquisition and processing system. Radiometers are recalibrated at least annually with reference instruments traceable to the World Radiometric Reference (WRR).

Stoffel, T.; Andreas, A.

143

Method and means of transmitting and receiving broad-band unipolar, ultrasonic pulses for ultrasonic inspection  

DOE Patents [OSTI]

The invention includes a means and method for transmitting and receiving broadband, unipolar, ultrasonic pulses for ultrasonic inspection. The method comprises generating a generally unipolar ultrasonic stress pulse from a low impedance voltage pulse transmitter along a low impedance electrical pathway to an ultrasonic transducer, and receiving the reflected echo of the pulse by the transducer, converting it to a voltage signal, and passing it through a high impedance electrical pathway to an output. The means utilizes electrical components according to the method. The means and method allow a single transducer to be used in a pulse/echo mode, and facilitates alternatingly transmitting and receiving the broadband, unipolar, ultrasonic pulses. 25 figures.

Thompson, D.O.; Hsu, D.K.

1993-12-14T23:59:59.000Z

144

CONTAMINATION OF BROADBAND PHOTOMETRY BY NEBULAR EMISSION IN HIGH-REDSHIFT GALAXIES: INVESTIGATIONS WITH KECK'S MOSFIRE NEAR-INFRARED SPECTROGRAPH  

SciTech Connect (OSTI)

Earlier work has raised the potential importance of nebular emission in the derivation of the physical characteristics of high-redshift Lyman break galaxies. Within certain redshift ranges, and especially at z ? 6-7, such lines may be strong enough to reduce estimates of the stellar masses and ages of galaxies compared with those derived assuming the broadband photometry represents stellar light alone. To test this hypothesis at the highest redshifts where such lines can be probed with ground-based facilities, we examine the near-infrared spectra of a representative sample of 28 3.0 < z < 3.8 Lyman break galaxies using the newly commissioned MOSFIRE near-infrared spectrograph at the Keck I telescope. We use these data to derive the rest-frame equivalent widths (EWs) of [O III] emission and show that these are comparable with estimates derived using the spectral energy distribution (SED) fitting technique introduced for sources of known redshift by Stark et al. Although our current sample is modest, its [O III] EW distribution is consistent with that inferred for H? based on SED fitting of Stark et al.'s larger sample of 3.8 < z < 5 galaxies. For a subset of survey galaxies, we use the combination of optical and near-infrared spectroscopy to quantify kinematics of outflows in z ? 3.5 star-forming galaxies and discuss the implications for reionization measurements. The trends we uncover underline the dangers of relying purely on broadband photometry to estimate the physical properties of high-redshift galaxies and emphasize the important role of diagnostic spectroscopy.

Schenker, Matthew A; Ellis, Richard S; Konidaris, Nick P [Department of Astrophysics, California Institute of Technology, MC 249-17, Pasadena, CA 91125 (United States); Stark, Daniel P, E-mail: schenker@astro.caltech.edu [Department of Astronomy and Steward Observatory, University of Arizona, Tucson, AZ 85721 (United States)

2013-11-01T23:59:59.000Z

145

THE BARYON ACOUSTIC OSCILLATION BROADBAND AND BROAD-BEAM ARRAY: DESIGN OVERVIEW AND SENSITIVITY FORECASTS  

SciTech Connect (OSTI)

This work describes a new instrument optimized for a detection of the neutral hydrogen 21 cm power spectrum between redshifts of 0.5 and 1.5: the Baryon Acoustic Oscillation Broadband and Broad-beam (BAOBAB) array. BAOBAB will build on the efforts of a first generation of 21 cm experiments that are targeting a detection of the signal from the Epoch of Reionization at z {approx} 10. At z {approx} 1, the emission from neutral hydrogen in self-shielded overdense halos also presents an accessible signal, since the dominant, synchrotron foreground emission is considerably fainter than at redshift 10. The principle science driver for these observations are baryon acoustic oscillations in the matter power spectrum which have the potential to act as a standard ruler and constrain the nature of dark energy. BAOBAB will fully correlate dual-polarization antenna tiles over the 600-900 MHz band with a frequency resolution of 300 kHz and a system temperature of 50 K. The number of antennas will grow in staged deployments, and reconfigurations of the array will allow for both traditional imaging and high power spectrum sensitivity operations. We present calculations of the power spectrum sensitivity for various array sizes, with a 35 element array measuring the cosmic neutral hydrogen fraction as a function of redshift, and a 132 element system detecting the BAO features in the power spectrum, yielding a 1.8% error on the z {approx} 1 distance scale, and, in turn, significant improvements to constraints on the dark energy equation of state over an unprecedented range of redshifts from {approx}0.5 to 1.5.

Pober, Jonathan C.; Parsons, Aaron R.; McQuinn, Matthew; Ali, Zaki [Astronomy Department, University of California, Berkeley, CA (United States); DeBoer, David R. [Radio Astronomy Laboratory, University of California, Berkeley, CA (United States); McDonald, Patrick [Physics Division, Lawrence Berkeley National Laboratory, Berkeley, CA (United States); Aguirre, James E. [Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA (United States); Bradley, Richard F. [Astronomy Department and Department of Electrical and Computer Engineering, University of Virginia, Charlottesville, VA (United States); Chang, Tzu-Ching [Institute of Astronomy and Astrophysics, Academia Sinica, Taipei, Taiwan (China); Morales, Miguel F. [Department of Physics, University of Washington, Seattle, WA (United States)

2013-03-15T23:59:59.000Z

146

EXPOSURE ESTIMATES BASED ON BROADBAND ELF MAGNETIC FIELD MEASUREMENTS VERSUS THE ICNIRP MULTIPLE FREQUENCY RULE  

Science Journals Connector (OSTI)

......absorption of energy during exposure...extremely low-frequency (ELF) magnetic...data logging and storage and performs FFT...responding to a sum of frequencies by a sum of independent responses to each individual frequency(23). This......

Jesķs M. Paniagua; MontaŮa Rufo; Antonio Jimťnez; Fernando T. Pachůn; JuliŠn Carrero

2014-05-01T23:59:59.000Z

147

Solar Energy, 2006, 80, 3, 361-367 SIMULATING METEOSAT-7 BROADBAND RADIANCES USING TWO  

E-Print Network [OSTI]

Solar Energy, 2006, 80, 3, 361-367 SIMULATING METEOSAT-7 BROADBAND RADIANCES USING TWO VISIBLE-00361360,version1-13Feb2009 Author manuscript, published in "Solar Energy 80, 3 (2006) 361-367" DOI : 10.1016/j.solener.2005.01.012 #12;Solar Energy, 2006, 80, 3, 361-367 · Imet-7 the maximum irradiance

Paris-Sud XI, Université de

148

An Autonomous, Broadband, Multi-channel Neural Recording System for Freely Behaving Primates  

E-Print Network [OSTI]

. features, 2) their battery life or storage capacity is limited to a few hours or less for broadband behaving primates. In this paper we present a dual- channel, battery powered, neural recording system of advances, particularly in the field of neural prosthetics. However, current state of the art experimental

Shenoy, Krishna V.

149

Telecommunications Policy 28 (2004) 559578 Can broadband over powerline carrier (PLC) compete?  

E-Print Network [OSTI]

Telecommunications Policy 28 (2004) 559­578 Can broadband over powerline carrier (PLC) compete Abstract Powerline carrier (PLC) communications have been heralded by the FCC as the ``3rd wire'' to every on the United States). Results indicate that PLC does not appear to represent a major disruptive technology

150

Broadband precision wavelength meter based on a stepping FabryProt interferometer  

E-Print Network [OSTI]

Broadband precision wavelength meter based on a stepping Fabry­Pérot interferometer T. J. Scholl. INTRODUCTION Wavelength meters based on Michelson or Fizeau inter- ferometers have long been the standard a more general laser wavelength meter in which the FP ring pattern was employed to compare

Rehse, Steven J.

151

Author's personal copy Broadband flow-induced sound control using plasma actuators  

E-Print Network [OSTI]

ionization the plasma actuators generate weakly ionized atmospheric plasma that consists of charged particlesAuthor's personal copy Broadband flow-induced sound control using plasma actuators Xun Huang a Editor: L.G. Tham Available online 9 February 2010 a b s t r a c t Plasma actuators were used

Huang, Xun

152

Broadband Cable Access Networks: The HFC Plant, 3rd Ed edition  

Science Journals Connector (OSTI)

This book focuses on broadband distribution and systems architecture and concentrates on practical concepts that will allow the reader to do their own design, improvement, and troubleshooting work. The objective is to enhance the skill sets of a large ... Keywords: Data Transmission Systems, Networking

David Large; James Farmer

2008-10-01T23:59:59.000Z

153

Incorporation of nanovoids into metallic gratings for broadband plasmonic organic solar  

E-Print Network [OSTI]

Incorporation of nanovoids into metallic gratings for broadband plasmonic organic solar cells investigation and optimization of a newly proposed plasmonic organic solar cell geometry based. Kietzke, "Recent advances in organic solar cells," Adv. Optoelectron. 2007, 40285 (2007). 2. P. E. Shaw, A

Park, Namkyoo

154

Multicore Surprises: Lessons Learned from Optimizing Sweep3D on the Cell Broadband Engine  

E-Print Network [OSTI]

Watson Research Center Yorktown Heights, NY 10598, USA mpp@us.ibm.com Abstract The Cell Broadband Engine, such as thread-level parallelism using several Synergistic Processing Elements, data streaming parallelism and Development Program for the Data Intensive Com- puting Initiative at Pacific Northwest National Laboratory

Kuzmanov, Georgi

155

IEEE COMMUNICATIONS MAGAZINE, SPECIAL ISSUE MULTIACCESS FOR BROADBAND WIRELESS 100 Wireless Bandwidth in the Making  

E-Print Network [OSTI]

IEEE COMMUNICATIONS MAGAZINE, SPECIAL ISSUE MULTIACCESS FOR BROADBAND WIRELESS 100 Wireless to approaching the information theoretic limits of wireless multiple­access channels. This article offers a brief review of those technologies and their promise to meet future demand for wireless data rate. Keywords

Verd√ļ, Sergio

156

Advanced Design of Broadband Distributed Amplifier using a SiGe BiCMOS Technology  

E-Print Network [OSTI]

Advanced Design of Broadband Distributed Amplifier using a SiGe BiCMOS Technology Gye-An Lee distributed amplifier for optical communication applications using SiGe BiCMOS technology. The design of some techniques are needed at such high frequencies. Main obstacles in the design of a silicon- based distributed

De Flaviis, Franco

157

Arrays and Cascades of Fluorescent Liquid-Liquid Waveguides: Broadband Light Sources for  

E-Print Network [OSTI]

Arrays and Cascades of Fluorescent Liquid-Liquid Waveguides: Broadband Light Sources) microchannel waveguides with liquid cores containing fluorescent dyes, excited by incident light from an external halogen bulb. Simultaneous use of multiple fluorophores in a common solution, in a single L2 light

Prentiss, Mara

158

Ultrathin, high-efficiency, broad-band, omni-acceptance, organic solar cells enhanced by  

E-Print Network [OSTI]

: Three of central challenges in solar cells are high light coupling into solar cell, high light trappingUltrathin, high-efficiency, broad-band, omni- acceptance, organic solar cells enhanced by plasmonic and demonstration of a new ultra-thin high- efficiency organic solar cell (SC), termed "plasmonic cavity

159

Broadband CMOS-Compatible Silicon Photonic Electro-Optic Switch for Photonic Networks-on-Chip  

E-Print Network [OSTI]

-on-chip (NoCs) offer an attractive solution for bandwidth scalability with reduced power consumption reconfiguration [1]. Electro-optic control of these broadband switches enables a more scalable and energy signal between the through port and the drop port is accomplished with the detuning of the right cavity

Bergman, Keren

160

Panama City 2003 Broadband Shallow?water Acoustic Coherence Experiments  

Science Journals Connector (OSTI)

In June 2003 a series of acoustic propagation experiments were conducted off the coast of Panama City Florida. The experiments were designed to measure and provide an understand of signal phase and amplitude fluctuations and signal spatial and temporal coherence over several large horizontal and vertical arrays. The propagation measurements were conducted in a water depth of 8.8m and at ranges of 70 m and 150 m. The acoustic measurements cover frequencies from 1 to 140 kHz. The propagation measurements were supported by data obtained by wave rider buoys CTDís thermister chains and current meters. Bottom penetration data was also obtained using a buried hydrophone array. The experiments will be outlined and the data sets described.

Steve Stanic; Edgar Kennedy; Dexter Malley; Bob Brown; Roger Meredith; Robert Fisher; Howard Chandler; Richard Ray; Ralph Goodman

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "broadband pyranometer measurements" 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

Graded index and randomly oriented core-shell silicon nanowires with broadband and wide angle antireflection for photovoltaic cell applications  

E-Print Network [OSTI]

Antireflection with broadband and wide angle properties is important for a wide range of applications on photovoltaic cells and display. The SiOx shell layer provides a natural antireflection from air to the Si core absorption layer. In this work, we have demonstrated the random core-shell silicon nanowires with both broadband (from 400nm to 900nm) and wide angle (from normal incidence to 60\\degree) antireflection characteristics within AM1.5 solar spectrum. The graded index structure from the randomly oriented core-shell (Air/SiOx/Si) nanowires may provide a potential avenue to realize a broadband and wide angle antireflection layer.

Pignalosa, P; Qiao, L; Tseng, M; Yi, Yasha

2011-01-01T23:59:59.000Z

162

VIMOS total transmission profiles for broad-band filters  

E-Print Network [OSTI]

VIMOS is a wide-field imager and spectrograph mounted on UT3 at the VLT, whose FOV consists of four 7'x8' quadrants. Here we present the measurements of total transmission profiles -- i.e. the throughput of telescope + instrument -- for the broad band filters U, B, V, R, I, and z for each of its four quadrants. Those measurements can also be downloaded from the public VIMOS web-page. The transmission profiles are compared with previous estimates from the VIMOS consortium.

S. Mieske; M. Rejkuba; S. Bagnulo; C. Izzo; G. Marconi

2007-04-13T23:59:59.000Z

163

Leica TCS SP5 The Only Broadband Confocal  

E-Print Network [OSTI]

: maximal transmissive and spectrally adaptive · Illumination regimes switchable in microseconds: for fast dynamic measurements · Beam splitting for new dyes or laser lines instantly: comfortable and cost Routing for Multiphoton Laser G Multiphoton Laser 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1a 1b 16 2 15 2 3

Adams, Mark

164

Investigation of broadband over power line channel capacity of shipboard power system cables for ship communications networks  

E-Print Network [OSTI]

Broadband over Power Line (BPL) technology has garnered significant attention lately due to recent advancements in solid state technologies and channel coding schemes. The successful application of BPL technology for in-home automation...

Akinnikawe, Ayorinde

2009-05-15T23:59:59.000Z

165

Extending broadband past the urban fringe with wireless mesh : a strategic analysis with policy implications for Kenya's Universal Service Fund  

E-Print Network [OSTI]

As the competitive wholesale cost of bandwidth continues to plummet in Kenya, last-mile networks have become a bottleneck in the extension of affordable broadband outside major cities. In this work we explore the business ...

Berkoben, Keith A. (Keith Alexander)

2011-01-01T23:59:59.000Z

166

Optimization of nonbinary slanted surface-relief gratings as high-efficiency broadband couplers for light guides  

Science Journals Connector (OSTI)

We propose and investigate the use of slanted surface-relief gratings with nonbinary profiles as high-efficiency broadband couplers for light guides. First, a Chandezon-method-based...

Bai, Benfeng; Laukkanen, Janne; Kuittinen, Markku; Siitonen, Samuli

2010-01-01T23:59:59.000Z

167

Broadband extreme ultraviolet multilayer mirror for supercontinuum light at a photon energy of 35-65 eV  

Science Journals Connector (OSTI)

We have developed a broadband multilayer mirror for photon energies between 35 and 65 eV. This extreme ultraviolet (EUV) mirror has an almost flat reflectivity profile at normal...

Hatayama, Masatoshi; Takenaka, Hisataka; Gullikson, Eric M; Suda, Akira; Midorikawa, Katsumi

2009-01-01T23:59:59.000Z

168

Prospects of coherent control in turbid media: Bounds on focusing broadband laser pulses  

SciTech Connect (OSTI)

We study the prospects of controlling transmission of broadband and bichromatic laser pulses through turbid samples. The ability to focus transmitted broadband light is limited via both the scattering properties of the medium and the technical characteristics of the experimental setup. There are two time scales given by pulse stretching in the near- and far-field regions which define the maximum bandwidth of a pulse amenable to focusing. In the geometric-optics regime of wave propagation in the medium, a single setup can be optimal for focusing light at frequencies {omega} and n{omega} simultaneously, providing the basis for the 1+n coherent quantum control. Beyond the regime of geometric optics, we discuss a simple solution for the shaping, which provides the figure of merit for one's ability to simultaneously focus several transmission modes.

Shapiro, Evgeny A.; Drane, Thomas M. [Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, BC, Canada V6T 1Z1 (Canada); Milner, Valery [Department of Physics, The University of British Columbia, 2036 Main Mall, Vancouver, BC, Canada V6T 1Z1 (Canada)

2011-11-15T23:59:59.000Z

169

Room temperature broadband terahertz gains in graphene heterostructures based on inter-layer radiative transitions  

SciTech Connect (OSTI)

We exploit inter-layer radiative transitions to provide gains to amplify terahertz waves in graphene heterostructures. This is achieved by properly doping graphene sheets and aligning their energy bands so that the processes of stimulated emissions can overwhelm absorptions. We derive an expression for the gain estimation and show the gain is insensitive to temperature variation. Moreover, the gain is broadband and can be strong enough to compensate the free carrier loss, indicating graphene based room temperature terahertz lasers are feasible.

Tang, Linlong [Key Laboratory of High Energy Density Physics and Technology, College of Physics and Technology, Sichuan University, Chengdu, 610064 (China); Chongqing institute of green and intelligent technology, Chinese Academy of Sciences, Chongqing, 401122 (China); Du, Jinglei, E-mail: dujl@scu.edu.cn [Key Laboratory of High Energy Density Physics and Technology, College of Physics and Technology, Sichuan University, Chengdu, 610064 (China); Shi, Haofei, E-mail: shi@cigit.ac.cn; Wei, Dongshan; Du, Chunlei, E-mail: cldu@cigit.ac.cn [Chongqing institute of green and intelligent technology, Chinese Academy of Sciences, Chongqing, 401122 (China)

2014-10-15T23:59:59.000Z

170

Magnetic field measurements near stand-alone transformer stations  

Science Journals Connector (OSTI)

......of station B 5 m. In each transformer station two types of MF measurements were conducted, employing the EMDEX II meter (Enertech Consultants, Campbell, CA, USA), using the broadband mode (40-800 Hz): (i) 11 m (or even denser) grid around......

Shaiela Kandel; Ronen Hareuveny; Nir-Mordechay Yitzhak; Raphael Ruppin

2013-12-01T23:59:59.000Z

171

Investigation of Unusual Albedos in the SGP Domain  

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

Investigation of Unusual Albedos in the SGP Domain Investigation of Unusual Albedos in the SGP Domain Groff, David ARM SGP Duchon, Claude University Of Oklahoma Category: Atmospheric State and Surface We investigate the cause of unusually high albedos at an Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) extended facility near Morris, OK. In a previous study, daily albedos were calculated at several SGP extended facilities for 1998 and 1999 using broadband (.28 to 3 microns) pyranometers. The average daily albedo during this period was calculated to be at least about 5% higher at Morris than at any of the other SGP extended facilities. Surface based measurements of daily albedos at Morris and two nearby SGP extended facilities during 2004 and 2005 suggest the unusually high albedo measurements at Morris are real.

172

ARM - Campaign Instrument - pyran-delta-spn1  

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

delta-spn1 delta-spn1 Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Delta-T Sunshine Pyranometer- SPN1 (PYRAN-DELTA-SPN1) Instrument Categories Radiometric Campaigns Diffuse Shortwave IOP [ Download Data ] Southern Great Plains, 2001.09.24 - 2001.10.22 Surface Observation in Support of in-situ Observations within the Arctic Boundary Layer [ Download Data ] North Slope Alaska, 2008.04.01 - 2008.05.31 Primary Measurements Taken The following measurements are those considered scientifically relevant. Refer to the datastream (netcdf) file headers for the list of all available measurements, including those recorded for diagnostic or quality assurance purposes. Shortwave broadband total downwelling irradiance

173

Efficiency Enhancement InGaP/GaAs Dual-junction Solar Cell by Broad-band and Omnidirectional Antireflection Nanorod Arrays  

Science Journals Connector (OSTI)

10% efficiency enhancement of the solar cell by Broad-band and Omnidirectional Antireflection Nanorod Arrays was demonstrated. The enhanced efficiency attributed to increased light...

Tsai, Min-An; Tseng, P C; Yu, Peichen; Chiu, C H; Kuo, Hao-Chung

174

Density measurements Viscosity measurements  

E-Print Network [OSTI]

Density measurements Viscosity measurements Temperature measurements Pressure measurements Flow rate measurements Velocity measurements Sensors How to measure fluid flow properties ? Am¬īelie Danlos Ravelet Experimental methods for fluid flows: an introduction #12;Density measurements Viscosity

Ravelet, Florent

175

BIASES AND UNCERTAINTIES IN PHYSICAL PARAMETER ESTIMATES OF LYMAN BREAK GALAXIES FROM BROADBAND PHOTOMETRY  

SciTech Connect (OSTI)

We investigate the biases and uncertainties in estimates of physical parameters of high-redshift Lyman break galaxies (LBGs), such as stellar mass, mean stellar population age, and star formation rate (SFR), obtained from broadband photometry. These biases arise from the simplifying assumptions often used in fitting the spectral energy distributions (SEDs). By combining {lambda}CDM hierarchical structure formation theory, semianalytic treatments of baryonic physics, and stellar population synthesis models, we construct model galaxy catalogs from which we select LBGs at redshifts z {approx} 3.4, 4.0, and 5.0. The broadband photometric SEDs of these model LBGs are then analyzed by fitting galaxy template SEDs derived from stellar population synthesis models with smoothly declining SFRs. We compare the statistical properties of LBGs' physical parameters-such as stellar mass, SFR, and stellar population age-as derived from the best-fit galaxy templates with the intrinsic values from the semianalytic model. We find some trends in these distributions: first, when the redshift is known, SED-fitting methods reproduce the input distributions of LBGs' stellar masses relatively well, with a minor tendency to underestimate the masses overall, but with substantial scatter. Second, there are large systematic biases in the distributions of best-fit SFRs and mean ages, in the sense that single-component SED-fitting methods underestimate SFRs and overestimate ages. We attribute these trends to the different star formation histories predicted by the semianalytic models and assumed in the galaxy templates used in SED-fitting procedure, and to the fact that light from the current generation of star formation can hide older generations of stars. These biases, which arise from the SED-fitting procedure, can significantly affect inferences about galaxy evolution from broadband photometry.

Lee, Seong-Kook; Idzi, Rafal [Department of Physics and Astronomy, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218-2686 (United States); Ferguson, Henry C.; Somerville, Rachel S.; Wiklind, Tommy [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Giavalisco, Mauro [Astronomy Department, University of Massachusetts, Amherst, MA 01003 (United States)], E-mail: joshua@pha.jhu.edu

2009-09-01T23:59:59.000Z

176

Broadband light absorption enhancement in polymer photovoltaics using metal nanowall gratings as transparent electrodes  

SciTech Connect (OSTI)

The authors investigate light absorption in organic solar cells in which indium tin oxide (ITO) is replaced by a new metallic architecture (grating) as a transparent electrode. Different from typical metal nanowire gratings, our gratings consist of metal nanowalls with nanoscale footprint and (sub)microscale height [Adv. Mater. 23, 2469 (2011)], thus ensuring high optical transmittance and electrical conductivity. Simulations reveal that a broadband and polarization-insensitive light absorption enhancement is achieved via two mechanisms, when such silver nanowall gratings are employed in P3HT:PCBM based solar cells. Overall absorption enhanced by ~23% compared to a reference cell with ITO electrode.

Ye, Zhuo; Chaudhary, Sumit; Kuang, Ping; Ho, Kai-Ming

2012-05-15T23:59:59.000Z

177

All-dielectric three-dimensional broadband Eaton lens with large refractive index range  

SciTech Connect (OSTI)

We proposed a method to realize three-dimensional (3D) gradient index (GRIN) devices requiring large refractive index (RI) range with broadband performance. By combining non-resonant GRIN woodpile photonic crystals structure in the metamaterial regime with a compound liquid medium, a wide RI range (1Ė6.32) was fulfilled flexibly. As a proof-of-principle for the low-loss and non-dispersive method, a 3D Eaton lens was designed and fabricated based on 3D printing process. Full-wave simulation and experiment validated its omnidirectional wave bending effects in a broad bandwidth covering Ku band (12?GHzĖ18?GHz)

Yin, Ming; Yong Tian, Xiao, E-mail: leoxyt@mail.xjtu.edu.cn; Ling Wu, Ling; Chen Li, Di [State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049 (China)

2014-03-03T23:59:59.000Z

178

Discrepancies in Shortwave Diffuse Measured and Modeled Irradiances in Antarctica  

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

Discrepancies in Shortwave Diffuse Measured and Discrepancies in Shortwave Diffuse Measured and Modeled Irradiances in Antarctica A. Payton, P. Ricchiazzi, and C. Gautier University of California Santa Barbara, California D. Lubin Scripps Scripps Institution of Oceanography La Jolla, California Introduction Measurements of clear-sky shortwave (SW) radiation at the surface show discrepancies between measurements and model simulations, but only for certain measurements across time and space. Most of the observations entail broadband measurements. A spectral and spatial analysis of the occurrence of this discrepancy may lend insight into the responsible processes. Langley calibrated multi-filter rotating shadowband radiometer (MFRSR) measurements collected at the Antarctic coastline reveal significant

179

FAST Copper For Broadband Access Mung Chiang1, Jianwei Huang1, Dahai Xu1, Yung Yi1, Chee Wei Tan1, Raphael Cendrillon2  

E-Print Network [OSTI]

FAST Copper For Broadband Access Mung Chiang1, Jianwei Huang1, Dahai Xu1, Yung Yi1, Chee Wei Tan1 Abstract-- This is an overview of the ongoing FAST Copper project, which is aimed at substantial improvements in rate, reach, reliability, and quality in copper-last-mile broadband access through fiber

Yi, Yung

180

FERMI-LAT OBSERVATIONS AND A BROADBAND STUDY OF SUPERNOVA REMNANT CTB 109  

SciTech Connect (OSTI)

CTB 109 (G109.1-1.0) is a Galactic supernova remnant (SNR) with a hemispherical shell morphology in X-rays and in the radio band. In this work, we report the detection of {gamma}-ray emission coincident with CTB 109, using 37 months of data from the Large Area Telescope on board the Fermi Gamma-ray Space Telescope. We study the broadband characteristics of the remnant using a model that includes hydrodynamics, efficient cosmic-ray (CR) acceleration, nonthermal emission, and a self-consistent calculation of the X-ray thermal emission. We find that the observations can be successfully fit with two distinct parameter sets, one where the {gamma}-ray emission is produced primarily by leptons accelerated at the SNR forward shock and the other where {gamma}-rays produced by forward shock accelerated CR ions dominate the high-energy emission. Consideration of thermal X-ray emission introduces a novel element to the broadband fitting process, and while it does not rule out either the leptonic or the hadronic scenarios, it constrains the parameter sets required by the model to fit the observations. Moreover, the model that best fits the thermal and nonthermal emission observations is an intermediate case, where both radiation from accelerated electrons and hadrons contribute almost equally to the {gamma}-ray flux observed.

Castro, Daniel [MIT-Kavli Center for Astrophysics and Space Research, 77 Massachusetts Avenue, Cambridge, MA 02139 (United States); Slane, Patrick; Patnaude, Daniel J. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Ellison, Donald C. [Physics Department, North Carolina State University, Box 8202, Raleigh, NC 27695 (United States)

2012-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "broadband pyranometer measurements" from the National Library of EnergyBeta (NLEBeta).
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181

BRIGHT BROADBAND AFTERGLOWS OF GRAVITATIONAL WAVE BURSTS FROM MERGERS OF BINARY NEUTRON STARS  

SciTech Connect (OSTI)

If double neutron star mergers leave behind a massive magnetar rather than a black hole, then a bright early afterglow can follow the gravitational wave burst (GWB) even if there is no short gamma-ray burst (SGRB)-GWB association or if there is an association but the SGRB does not beam toward Earth. Besides directly dissipating the proto-magnetar wind, as suggested by Zhang, here we suggest that the magnetar wind could push the ejecta launched during the merger process and, under certain conditions, would reach a relativistic speed. Such a magnetar-powered ejecta, when interacting with the ambient medium, would develop a bright broadband afterglow due to synchrotron radiation. We study this physical scenario in detail and present the predicted X-ray, optical, and radio light curves for a range of magnetar and ejecta parameters. We show that the X-ray and optical light curves usually peak around the magnetar spin-down timescale ({approx}10{sup 3}-10{sup 5} s), reaching brightnesses readily detectable by wide-field X-ray and optical telescopes, and remain detectable for an extended period. The radio afterglow peaks later, but is much brighter than the case without a magnetar energy injection. Therefore, such bright broadband afterglows, if detected and combined with GWBs in the future, would be a probe of massive millisecond magnetars and stiff equations of state for nuclear matter.

Gao He; Ding Xuan; Wu Xuefeng [Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008 (China); Zhang Bing [Department of Physics and Astronomy, University of Nevada, Las Vegas, NV 89154 (United States); Dai Zigao, E-mail: xfwu@pmo.ac.cn, E-mail: zhang@physics.unlv.edu, E-mail: dzg@nju.edu.cn [School of Astronomy and Space Science, Nanjing University, Nanjing 210093 (China)

2013-07-10T23:59:59.000Z

182

Investigating Broadband Variability of the TeV Blazar 1ES 1959+650  

E-Print Network [OSTI]

We summarize broadband observations of the TeV-emitting blazar 1ES 1959+650, including optical R-band observations by the robotic telescopes Super-LOTIS and iTelescope, UV observations by Swift UVOT, X-ray observations by the Swift X-ray Telescope (XRT), high-energy gamma-ray observations with the Fermi Large Area Telescope (LAT) and very-high-energy (VHE) gamma-ray observations by VERITAS above 315 GeV, all taken between 17 April 2012 and 1 June 2012 (MJD 56034 and 56079). The contemporaneous variability of the broadband spectral energy distribution is explored in the context of a simple synchrotron self Compton (SSC) model. In the SSC emission scenario, we find that the parameters required to represent the high state are significantly different than those in the low state. Motivated by possible evidence of gas in the vicinity of the blazar, we also investigate a reflected-emission model to describe the observed variability pattern. This model assumes that the non-thermal emission from the jet is reflected b...

Aliu, E; Arlen, T; Aune, T; Barnacka, A; Beilicke, M; Benbow, W; Berger, K; Bird, R; Bouvier, A; Buckley, J H; Bugaev, V; Cerruti, M; Chen, X; Ciupik, L; Collins-Hughes, E; Connolly, M P; Cui, W; Dumm, J; Eisch, J D; Falcone, A; Federici, S; Feng, Q; Finley, J P; Fleischhack, H; Fortin, P; Fortson, L; Furniss, A; Galante, N; Gillanders, G H; Griffin, S; Griffiths, S T; Grube, J; Gyuk, G; Hakansson, N; Hanna, D; Holder, J; Hughes, G; Humensky, T B; Johnson, C A; Kaaret, P; Kar, P; Kertzman, M; Khassen, Y; Kieda, D; Krawczynski, H; Krennrich, F; Lang, M J; Madhavan, A S; Majumdar, P; McArthur, S; McCann, A; Meagher, K; Millis, J; Moriarty, P; Mukherjee, R; Nelson, T; Nieto, D; de Bhroithe, A O'Faolain; Ong, R A; Otte, A N; Park, N; Perkins, J S; Pohl, M; Popkow, A; Prokoph, H; Quinn, J; Ragan, K; Rajotte, J; Reyes, L C; Reynolds, P T; Richards, G T; Roache, E; Sadun, A; Santander, M; Sembroski, G H; Shahinyan, K; Sheidaei, F; Smith, A W; Staszak, D; Telezhinsky, I; Theiling, M; Tyler, J; Varlotta, A; Vassiliev, V V; Vincent, S; Wakely, S P; Weekes, T C; Weinstein, A; Welsing, R; Wilhelm, A; Williams, D A; Zitzer, B; BŲttcher, M; Fumagalli, M

2014-01-01T23:59:59.000Z

183

Bright broad-band afterglows of gravitational wave bursts from mergers of binary neutron stars  

E-Print Network [OSTI]

If double neutron star mergers leave behind a massive magnetar rather than a black hole, a bright early afterglow can follow the gravitational wave burst (GWB) even if there is no short gamma-ray burst (SGRB) - GWB association or there is an association but the SGRB does not beam towards earth. Besides directly dissipating the proto-magnetar wind as suggested by Zhang, we here suggest that the magnetar wind could push the ejecta launched during the merger process, and under certain conditions, would reach a relativistic speed. Such a magnetar-powered ejecta, when interacting with the ambient medium, would develop a bright broad-band afterglow due to synchrotron radiation. We study this physical scenario in detail, and present the predicted X-ray, optical and radio light curves for a range of magnetar and ejecta parameters. We show that the X-ray and optical lightcurves usually peak around the magnetar spindown time scale (10^3-10^5s), reaching brightness readily detectable by wide-field X-ray and optical telescopes, and remain detectable for an extended period. The radio afterglow peaks later, but is much brighter than the case without a magnetar energy injection. Therefore, such bright broad-band afterglows, if detected and combined with GWBs in the future, would be a probe of massive millisecond magnetars and stiff equation-of-state for nuclear matter.

He Gao; Xuan Ding; Xue-Feng Wu; Bing Zhang; Zi-Gao Dai

2013-01-03T23:59:59.000Z

184

Broadband Heating Rate Profile Project (BBHRP) - SGP 1bbhrpripbe1mcfarlane  

SciTech Connect (OSTI)

The objective of the ARM Broadband Heating Rate Profile (BBHRP) Project is to provide a structure for the comprehensive assessment of our ability to model atmospheric radiative transfer for all conditions. Required inputs to BBHRP include surface albedo and profiles of atmospheric state (temperature, humidity), gas concentrations, aerosol properties, and cloud properties. In the past year, the Radiatively Important Parameters Best Estimate (RIPBE) VAP was developed to combine all of the input properties needed for BBHRP into a single gridded input file. Additionally, an interface between the RIPBE input file and the RRTM was developed using the new ARM integrated software development environment (ISDE) and effort was put into developing quality control (qc) flags and provenance information on the BBHRP output files so that analysis of the output would be more straightforward. This new version of BBHRP, sgp1bbhrpripbeC1.c1, uses the RIPBE files as input to RRTM, and calculates broadband SW and LW fluxes and heating rates at 1-min resolution using the independent column approximation. The vertical resolution is 45 m in the lower and middle troposphere to match the input cloud properties, but is at coarser resolution in the upper atmosphere. Unlike previous versions, the vertical grid is the same for both clear-sky and cloudy-sky calculations.

Riihimaki, Laura; Shippert, Timothy

2014-11-05T23:59:59.000Z

185

Graphene based tunable fractal Hilbert curve array broadband radar absorbing screen for radar cross section reduction  

SciTech Connect (OSTI)

This paper proposes a new type of graphene based tunable radar absorbing screen. The absorbing screen consists of Hilbert curve metal strip array and chemical vapour deposition (CVD) graphene sheet. The graphene based screen is not only tunable when the chemical potential of the graphene changes, but also has broadband effective absorption. The absorption bandwidth is from 8.9GHz to 18.1GHz, ie., relative bandwidth of more than 68%, at chemical potential of 0eV, which is significantly wider than that if the graphene sheet had not been employed. As the chemical potential varies from 0 to 0.4eV, the central frequency of the screen can be tuned from 13.5GHz to 19.0GHz. In the proposed structure, Hilbert curve metal strip array was designed to provide multiple narrow band resonances, whereas the graphene sheet directly underneath the metal strip array provides tunability and averagely required surface resistance so to significantly extend the screen operation bandwidth by providing broadband impedance matching and absorption. In addition, the thickness of the screen has been optimized to achieve nearly the minimum thickness limitation for a nonmagnetic absorber. The working principle of this absorbing screen is studied in details, and performance under various incident angles is presented. This work extends applications of graphene into tunable microwave radar cross section (RCS) reduction applications.

Huang, Xianjun, E-mail: xianjun.huang@manchester.ac.uk [School of Electrical and Electronic Engineering, University of Manchester, Manchester M13 9PL (United Kingdom); College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073 (China); Hu, Zhirun [School of Electrical and Electronic Engineering, University of Manchester, Manchester M13 9PL (United Kingdom); Liu, Peiguo [College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073 (China)

2014-11-15T23:59:59.000Z

186

Broadband Heating Rate Profile Project (BBHRP) - SGP 1bbhrpripbe1mcfarlane  

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

The objective of the ARM Broadband Heating Rate Profile (BBHRP) Project is to provide a structure for the comprehensive assessment of our ability to model atmospheric radiative transfer for all conditions. Required inputs to BBHRP include surface albedo and profiles of atmospheric state (temperature, humidity), gas concentrations, aerosol properties, and cloud properties. In the past year, the Radiatively Important Parameters Best Estimate (RIPBE) VAP was developed to combine all of the input properties needed for BBHRP into a single gridded input file. Additionally, an interface between the RIPBE input file and the RRTM was developed using the new ARM integrated software development environment (ISDE) and effort was put into developing quality control (qc) flags and provenance information on the BBHRP output files so that analysis of the output would be more straightforward. This new version of BBHRP, sgp1bbhrpripbeC1.c1, uses the RIPBE files as input to RRTM, and calculates broadband SW and LW fluxes and heating rates at 1-min resolution using the independent column approximation. The vertical resolution is 45 m in the lower and middle troposphere to match the input cloud properties, but is at coarser resolution in the upper atmosphere. Unlike previous versions, the vertical grid is the same for both clear-sky and cloudy-sky calculations.

Riihimaki, Laura; Shippert, Timothy

187

MAPPING THE SPATIAL DISTRIBUTION OF DUST EXTINCTION IN NGC 959 USING BROADBAND VISIBLE AND MID-INFRARED FILTERS  

SciTech Connect (OSTI)

We present a method to estimate and map the two-dimensional distribution of dust extinction in the late-type spiral galaxy NGC 959 from the theoretical and observed flux ratio of optical V and mid-IR (MIR) 3.6 {mu}m images. Our method is applicable to both young and old stellar populations for a range of metallicities, and is not restricted to lines of sight toward star-formation (SF) regions. We explore this method using a pixel-based analysis on images of NGC 959 obtained in the V band at the Vatican Advanced Technology Telescope and at 3.6 {mu}m (L band) with Spitzer/Infrared Array Camera. We present the original and extinction corrected Galaxy Evolution Explorer (GALEX) far-UV (FUV) and near-UV (NUV) images, as well as optical UBVR images of NGC 959. While the dust lanes are not clearly evident at GALEX resolution, our dust map clearly traces the dust that can be seen silhouetted against the galaxy's disk in the high-resolution Hubble Space Telescope (HST) images of NGC 959. The advantages of our method are (1) it only depends on two relatively common broadband images in the optical V band and in the MIR at 3.6 {mu}m (but adding a near-UV band improves its fidelity); and (2) it is able to map the two-dimensional spatial distribution of dust within a galaxy. This powerful tool could be used to measure the detailed distribution of dust extinction within higher redshift galaxies to be observed with, e.g., the Hubble Space Telescope (HST)/WFC3 (optical near-IR) and James Webb Space Telescope (mid-IR), and to distinguish properties of dust within galaxy bulges, spiral arms, and inter-arm regions.

Tamura, K.; Jansen, R. A.; Windhorst, R. A. [Department of Physics, Arizona State University, Tempe, AZ 85287-1504 (United States)], E-mail: ktamura@asu.edu, E-mail: rolf.jansen@asu.edu, E-mail: rogier.windhorst@asu.edu

2009-12-15T23:59:59.000Z

188

ARM - Instrument - prp  

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

govInstrumentsprp govInstrumentsprp Documentation PRP : Instrument Mentor Monthly Summary (IMMS) reports PRP : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Portable Radiation Package (PRP) Instrument Categories Radiometric The Portable Radiation Package (PRP) is an instrument suite to collect atmospheric radiation measurements on a moving platform. The instrument suite consists of a Precision Spectral Pyranometer (PSP), Precision Infrared Radiometer (PIR), and continuously rotating shadowband radiometer. Output Datastreams 1sprprad : Portable Radiation Package: Broadband Radiometers, 1 second resolution 6sprpfrsr : Portable Radiation Package: Fast Rotating Shadowband

189

IEEE Wireless Communications August 200916 1536-1284/09/$25.00 2009 IEEE SERVICE-ORIENTED BROADBAND  

E-Print Network [OSTI]

SERVICE-ORIENTED BROADBAND WIRELESS NETWORK ARCHITECTURE INTRODUCTION With the advancement of wireless of vehic- ular networks service-oriented, and they are expected to provide clear customer benefits databases and provide correspond- ing services to customers. In service-oriented vehicular networks

Shen, Xuemin "Sherman"

190

Real-time imaging of the spatial distribution of rf-heating in NMR samples during broadband decoupling  

E-Print Network [OSTI]

by the temperature control system. Moreover, as the heating is spatially inhomogeneous, higher temperature increases of the numerical simulations. Since electric fields manifest themselves by rf-heating, the E-field distributionReal-time imaging of the spatial distribution of rf-heating in NMR samples during broadband

Wider, Gerhard

191

Modal analysis of the range evolution of broadband wavefields in the North Pacific Ocean: Low mode numbers  

E-Print Network [OSTI]

Modal analysis of the range evolution of broadband wavefields in the North Pacific Ocean: Low mode North Pacific Ocean are reported here. Transient wavefields in the 50­90 Hz band that were recorded numbers Ilya A. Udovydchenkova) Applied Ocean Physics and Engineering Department, Woods Hole Oceanographic

Frandsen, Jannette B.

192

Recent Developments on the Broadband Heating Rate Profile Value-Added Product  

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

Recent Developments on the Recent Developments on the Broadband Heating Rate Profile Value-Added Product E. J. Mlawer, J. S. Delamere, and S. A. Clough Atmospheric and Environmental Research, Inc. Cambridge, Massachusetts M. A. Miller and K. L. Johnson Brookhaven National Laboratory Upton, New York T. R. Shippert and C. N. Long Pacific Northwest National Laboratory Richland, Washington R. G. Ellingson Florida State University Tallahassee, Florida M. H. Zhang State University of New York - Stony Brook Albany, New York R. A. Ferrare National Aeronautics and Space Administration Langley Research Center Hampton, Virginia R. T. Cederwall and S. C. Xie Los Alamos National Laboratory Los Alamos, New Mexico J. A. Ogren National Oceanic and Atmospheric Administration

193

Broad-band Spectral Properties of Accreting X-ray Binary Pulsars  

E-Print Network [OSTI]

Broad-band spectra of accreting X-ray binary pulsars can be fit by a phenomenological model composed by a power law with a high energy rollover above 10 keV, plus a blackbody component with a temperature of few hundred eV. While, at least qualitatively, the hard tail can be explained in terms of (inverse) Compton scattering, the origin of the soft component cannot find a unique explanation. Recently a qualitative picture able to explain the overall broad band-spectrum of luminous X-ray pulsars was carried out by taking into account the effect of bulk Comptonization in the accretion column. After a review on these recent theoretical developments, I will present a case study of how different modelization of the continuum affect broad features, in particular the cyclotron resonance features in Vela X-1.

Mauro Orlandini

2005-10-10T23:59:59.000Z

194

Cascading metallic gratings for broadband absorption enhancement in ultrathin plasmonic solar cells  

SciTech Connect (OSTI)

The incorporation of plasmonic nanostructures in the thin-film solar cells (TFSCs) is a promising route to harvest light into the nanoscale active layer. However, the light trapping scheme based on the plasmonic effects intrinsically presents narrow-band resonant enhancement of light absorption. Here we demonstrate that by cascading metal nanogratings with different sizes atop the TFSCs, broadband absorption enhancement can be realized by simultaneously exciting multiple localized surface plasmon resonances and inducing strong coupling between the plasmonic modes and photonic modes. As a proof of concept, we demonstrate of 66.5% in the photocurrent in an ultrathin amorphous silicon TFSC with two-dimensional cascaded gratings over the reference cell without gratings.

Wen, Long; Sun, Fuhe [Key Laboratory of Nanodevices and Applications-CAS and Collaborative Innovation Center of Suzhou Nano Science and Technology, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences (CAS), Suzhou 215123 (China); Chen, Qin, E-mail: qchen2012@sinano.ac.cn [Key Laboratory of Nanodevices and Applications-CAS and Collaborative Innovation Center of Suzhou Nano Science and Technology, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences (CAS), Suzhou 215123 (China); Peking University Shenzhen SOC Key Laboratory, PKU-HKUST Shenzhen-Hong Kong Institute, Hi-Tech Industrial Park South, Shenzhen 518057 (China)

2014-04-14T23:59:59.000Z

195

Design of a High Power Continuous Source of Broadband Down-Converted Light  

E-Print Network [OSTI]

We present the design and experimental proof of principle of a low threshold optical parametric oscillator (OPO) that continuously oscillates over a large bandwidth allowed by phase matching. The large oscillation bandwidth is achieved with a selective two-photon loss that suppresses the inherent mode competition, which tends to narrow the bandwidth in conventional OPOs. Our design performs pairwise mode-locking of many frequency pairs, in direct equivalence to passive mode-locking of ultrashort pulsed lasers. The ability to obtain high powers of continuous \\textit{and} broadband down-converted light enables the optimal exploitation of the correlations within the down-converted spectrum, thereby strongly affecting two-photon interactions even at classically high power levels, and opening new venues for applications such as two-photon spectroscopy and microscopy and optical spread spectrum communication.

Avi Pe'er; Yaron Silberberg; Barak Dayan; Asher A. Friesem

2006-08-29T23:59:59.000Z

196

Broadband, stable and highly coherent supercontinuum generation at telecommunication wavelengths in an hydrogenated amorphous silicon waveguide  

E-Print Network [OSTI]

Hydrogenated amorphous silicon (a:Si-H) has recently been recognized as a highly nonlinear CMOS compatible photonic platform. We experimentally demonstrate the generation of a supercontinuum (SC) spanning over 500 nm in a-Si:H photonic wire waveguide at telecommunication wavelengths using femtosecond input pulse with energy lower than 5 pJ. Numerical modeling of pulse propagation in the waveguide, based on the experimentally characterized dispersion profile, shows that the supercontinuum is the result of soliton fission and dispersive wave generation. It is demonstrated that the SC is highly coherent and that the waveguides do not suffer from material degradation under femtosecond pulse illumination. Finally, a direct comparison of SC generation in c-Si and a-Si:H waveguides confirms the higher performances of a-Si:H over c-Si for broadband low power SC generation at telecommunication wavelengths.

Leo, F; Kuyken, B; Roelkens, G; Gorza, S -P

2014-01-01T23:59:59.000Z

197

AARP Reply Comments to: DEPARTMENT OF ENERGY Implementing the National Broadband  

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

AARP Reply Comments to: AARP Reply Comments to: DEPARTMENT OF ENERGY Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy David Certner Legislative Counsel and Legislative Policy Director AARP Government Relations and Advocacy August 6, 2010 2 AARP submits the following comments on consumers and smart grid issues in reply to initial comments of a number of entities to the Request for Information (Request or RFI) on access to data in the smart grid space, published by the Department of Energy (DOE) on May 11, 2010. About AARP Founded in 1958, AARP is a nonprofit, nonpartisan membership organization that helps people age 50 and over improve the quality of their lives. AARP has offices in all 50 states, the District

198

Development of Simplified Calculations for a Multipyranometer Array for the Measurement of Direct and Diffuse Solar Radiation  

E-Print Network [OSTI]

in Finland by M. HW1'aien et al. (1985). Further development on the MPA was performed in several countries ineluding the United States where Perez (1986) presented a method for deriving beam radiation from a series of vertically mounted pyranometers...

Munger, B. K.; Haberl, J. S.

2000-01-01T23:59:59.000Z

199

Measuring the Balmer Jump and Effective Gravity in FGK Stars  

E-Print Network [OSTI]

It is difficult to accurately measure the effective gravity (log g) in late-type stars using broadband (eg. UBV or SDSS) or intermediate-band (uvby) photometric systems, especially when the stars can cover a range of metallicities and reddenings. However, simple spectroscopic observational and data reduction techniques can yield accurate values for log g through comparison of the Balmer jumps of low-resolution spectra with recent grids of synthetic flux spectra.

Bessell, Michael S

2007-01-01T23:59:59.000Z

200

On the Usage of Spectral and Broadband Satellite Instrument Measurements to Differentiate Climate Models with Different Cloud Feedback Strengths  

Science Journals Connector (OSTI)

Top-of-atmosphere radiometric signals associated with different high- and low-cloudĖradiative feedbacks have been examined through the use of an observing system simulation experiment (OSSE). The OSSE simulates variations in the spectrally ...

Daniel R. Feldman; Daniel M. Coleman; William D. Collins

2013-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "broadband pyranometer measurements" 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

Measurement-Measurement-  

E-Print Network [OSTI]

Internet Measurement- System A Measurement- System B Control System GPS Satellite GPS Satellite GPS Receiver GPS Receiver 2) measurement 3) data1) command Methodology for One-way IP Performance Measurement This paper proposes a methodology for measurement of one-way IP performance metrics such as one-way delay

Jeong, Jaehoon "Paul"

202

BIGHORNS - Broadband Instrument for Global HydrOgen ReioNisation Signal  

E-Print Network [OSTI]

The redshifted 21cm line of neutral hydrogen (HI), potentially observable at low radio frequencies (~50-200 MHz), should be a powerful probe of the physical conditions of the inter-galactic medium during Cosmic Dawn and the Epoch of Reionisation (EoR). The sky-averaged HI signal is expected to be extremely weak (~100 mK) in comparison to the foreground of up to 10000 K at the lowest frequencies of interest. The detection of such a weak signal requires an extremely stable, well characterised system and a good understanding of the foregrounds. Development of a nearly perfectly (~mK accuracy) calibrated total power radiometer system is essential for this type of experiment. We present the BIGHORNS (Broadband Instrument for Global HydrOgen ReioNisation Signal) experiment which was designed and built to detect the sky-averaged HI signal from the EoR at low radio frequencies. The BIGHORNS system is a mobile total power radiometer, which can be deployed in any remote location in order to collect radio-interference (...

Sokolowski, M; Wayth, R B; Tingay, S J; Clarke, N; Roberts, P; Waterson, M; Ekers, R D; Hall, P; Lewis, M; Mossammaparast, M; Padhi, S; Schlagenhaufer, F; Sutinjo, A; Tickner, J

2015-01-01T23:59:59.000Z

203

First Hot Electron Measurements in Near-ignition Scale Hohlraums on the National Ignition Facility  

SciTech Connect (OSTI)

On the National Ignition Facility (NIF), the hot electrons generated in laser heated hohlraums are inferred from the >20 keV bremsstrahlung emission measured with the FFLEX broadband spectrometer. New high energy (>200 keV) time resolved channels were added to meet requirements for ignition and to infer the generated >170 keV hot electrons that can cause ignition capsule preheat. First hot electron measurements in near ignition scaled hohlraums heated by 96-192 NIF laser beams are presented.

Dewald, E L; Suter, L J; Thomas, C; Hunter, S; Meeker, D; Meezan, N; Glenzer, S H; Bond, E; Kauffman, R L; Kilkenny, J; Landen, O

2009-10-08T23:59:59.000Z

204

Hot electron measurements in ignition relevant Hohlraums on the National Ignition Facility  

SciTech Connect (OSTI)

On the National Ignition Facility (NIF), hot electrons generated in laser heated Hohlraums are inferred from the >20 keV bremsstrahlung emission measured with the time integrated FFLEX broadband spectrometer. New high energy (>200 keV) time resolved channels were added to infer the generated >170 keV hot electrons that can cause ignition capsule preheat. First hot electron measurements in near ignition scaled Hohlraums heated by 96-192 NIF laser beams are presented.

Dewald, E. L.; Thomas, C.; Hunter, S.; Divol, L.; Meezan, N.; Glenzer, S. H.; Suter, L. J.; Bond, E.; Celeste, J.; Bradley, D.; Bell, P.; Kauffman, R. L.; Landen, O. L. [Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550 (United States); Kline, J. L. [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Kilkenny, J. [General Atomics, P.O. Box 85608, San Diego, California 92186 (United States)

2010-10-15T23:59:59.000Z

205

Multi-Dimensional Broadband IR Radiative Forcing of Marine Stratocumulus in a Large Eddy Simulation Model  

SciTech Connect (OSTI)

In order to address the interactive and evolutionary nature of the cloud-radiation interaction, we have coupled to a Large Eddy Simulation (LES) model the sophisticated multi-dimensional radiative transfer (MDRT) scheme of Evans (Spherical Harmonics Discrete Ordinate Method; 1998). Because of computational expense, we are at this time only able to run 2D experiments. Preliminary runs consider only the broadband longwave component, in large part because IR cloud top cooling is the significant forcing mechanism for marine stratocumulus. Little difference is noted in the evolution of unbroken stratocumulus between three-hour runs using MDRT and independent pixel approximation (IPA) for 2D domains of 50 km in the horizontal and 1.5 km in the vertical. Local heating rates differ slightly near undulating regions of cloud top, and a slight bias in mean heating rate from 1 to 3 h is present, yet the differences are never strong enough to result in a pronounced evolutionary bias in typical boundary layer metrics (e.g. inversion height, vertical velocity variance, TKE). Longer integration times may eventually produce a physical response to the bias in radiative cooling rates. A low-CCN case, designed to produce significant drizzle and induce cloud breakup does show subtle differences between MDRT and IPA. Over the course of the 6 hour simulations, entrainment is slightly less in the MDRT case, and the transition to the surface-based trade cumulus regime is delayed. Mean cooling rates appear systematically weaker in the MDRT case, indicative of a less energetic PBL and reflected in profiles of vertical velocity variance and TKE.

Mechem, David B.; Ovtchinnikov, Mikhail; Kogan, Y. L.; Davis, Anthony B; Cahalan, Robert F.; Takara, Ezra E.; Ellingson, Robert G.

2002-06-03T23:59:59.000Z

206

Adaptive phase measurements for narrowband squeezed beams  

E-Print Network [OSTI]

We have previously [Phys. Rev. A 65, 043803 (2002)] analyzed adaptive measurements for estimating the continuously varying phase of a coherent beam, and a broadband squeezed beam. A real squeezed beam must have finite photon flux N and hence can be significantly squeezed only over a limited frequency range. In this paper we analyze adaptive phase measurements of this type for a realistic model of a squeezed beam. We show that, provided it is possible to suitably choose the parameters of the beam, a mean-square phase uncertainty scaling as (N/kappa)^{-5/8} is possible, where kappa is the linewidth of the beam resulting from the fluctuating phase. This is an improvement over the (N/kappa)^{-1/2} scaling found previously for coherent beams. In the experimentally realistic case where there is a limit on the maximum squeezing possible, the variance will be reduced below that for coherent beams, though the scaling is unchanged.

Dominic W. Berry; Howard M. Wiseman

2006-03-22T23:59:59.000Z

207

Apparatus for accurately measuring high temperatures  

DOE Patents [OSTI]

The present invention is a thermometer used for measuring furnace temperaes in the range of about 1800.degree. to 2700.degree. C. The thermometer comprises a broadband multicolor thermal radiation sensor positioned to be in optical alignment with the end of a blackbody sight tube extending into the furnace. A valve-shutter arrangement is positioned between the radiation sensor and the sight tube and a chamber for containing a charge of high pressure gas is positioned between the valve-shutter arrangement and the radiation sensor. A momentary opening of the valve shutter arrangement allows a pulse of the high gas to purge the sight tube of air-borne thermal radiation contaminants which permits the radiation sensor to accurately measure the thermal radiation emanating from the end of the sight tube.

Smith, Douglas D. (Knoxville, TN)

1985-01-01T23:59:59.000Z

208

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, VOL. 27, NO. 2, FEBRUARY 2009 117 Capacity and Delay of Hybrid Wireless Broadband  

E-Print Network [OSTI]

to the infrastructure mode traffics. We then investigate the delay in hybrid wireless networks. We find that the average and Delay of Hybrid Wireless Broadband Access Networks Pan Li, Chi Zhang, Student Member, IEEE, and Yuguang goes large. In this paper, we propose a hybrid wireless network, which is an integrated wireless

Latchman, Haniph A.

209

Post-seismic relaxation following the 2009 April 6, l'Aquila (Italy), earthquake revealed by the mass position of a broad-band seismometer  

Science Journals Connector (OSTI)

......would be if no restoring force were exerted by the feedback...3 Block diagram of a force-balance broad-band...6 Conclusions Most force-balance broad-band...actual final dislocation-fundamental for evidencing possibly...Seismometry, inInternational Handbook of Earthquake and Engineering......

Nicola Alessandro Pino

2012-06-01T23:59:59.000Z

210

The broad-band fractal nature of heterogeneity in the upper crust from petrophysical logs  

Science Journals Connector (OSTI)

......order of kilometres and anisotropic, being over four times...measurements of standstones, shales and carbonates, J...order of kilometres and anisotropic, being over four times...and ACKNOWLEDGMENTS anisotropic. Exact values are difficult...measurements of standstones, shales and carbonates, J......

Sean S. Dolan; Christopher J. Bean; Bruno Riollet

1998-03-01T23:59:59.000Z

211

High-performance broadband optical coatings on InGaN/GaN solar cells for multijunction device integration  

SciTech Connect (OSTI)

We demonstrate InGaN/GaN multiple quantum well solar cells grown by metalorganic chemical vapor deposition on a bulk (0001) substrate with high-performance broadband optical coatings to improve light absorption. A front-side anti-reflective coating and a back-side dichroic mirror were designed to minimize front surface reflections across a broad spectral range and maximize rear surface reflections only in the spectral range absorbed by the InGaN, making the cells suitable for multijunction solar cell integration. Application of optical coatings increased the peak external quantum efficiency by 56% (relative) and conversion efficiency by 37.5% (relative) under 1 sun AM0 equivalent illumination.

Young, N. G., E-mail: ngyoung@engineering.ucsb.edu; Farrell, R. M.; Iza, M.; Speck, J. S. [Materials Department, University of California, Santa Barbara, California 93106 (United States); Perl, E. E.; Keller, S. [Department of Electrical and Computer Engineering, University of California, Santa Barbara, California 93106 (United States); Bowers, J. E.; Nakamura, S.; DenBaars, S. P. [Materials Department, University of California, Santa Barbara, California 93106 (United States); Department of Electrical and Computer Engineering, University of California, Santa Barbara, California 93106 (United States)

2014-04-21T23:59:59.000Z

212

Black Silicon Solar Thin-film Microcells Integrating Top Nanocone Structures for Broadband and Omnidirectional Light-Trapping  

E-Print Network [OSTI]

Recently developed classes of monocrystalline silicon solar microcells (u-cell) can be assembled into modules with characteristics (i.e., mechanically flexible forms, compact concentrator designs, and high-voltage outputs) that would be impossible to achieve using conventional, wafer-based approaches. In this paper, we describe a highly dense, uniform and non-periodic nanocone forest structure of black silicon (bSi) created on optically-thin (30 um) u-cells for broadband and omnidirectional light-trapping with a lithography-free and high-throughput plasma texturizing process. With optimized plasma etching conditions and a silicon nitride passivation layer, black silicon u-cells, when embedded in a polymer waveguiding layer, display dramatic increases of as much as 65.7% in short circuit current, as compared to a bare silicon device. The conversion efficiency increases from 8% to 11.5% with a small drop in open circuit voltage and fill factor.

Xu, Zhida; Brueckner, Eric P; Li, Lanfang; Jiang, Jing; Nuzzo, Ralph G; Liu, Gang L

2014-01-01T23:59:59.000Z

213

Efficient Cherenkov emission of broadband terahertz radiation from an ultrashort laser pulse in a sandwich structure with nonlinear core  

SciTech Connect (OSTI)

A scheme for efficient generation of broadband terahertz radiation by a femtosecond laser pulse propagating in a planar sandwichlike structure is proposed. The structure consists of a thin nonlinear core cladded with prisms made of a material with low terahertz absorption. The focused into a line laser pulse propagates in the core as a leaky or waveguide mode and emits Cherenkov wedge of terahertz waves in the cladding. We developed a theory that describes terahertz generation in such a structure and calculated spatial distribution of the generated terahertz field, its energy spectrum and optical-to-terahertz conversion efficiency. The developed theory predicts the conversion efficiency of up to several percent in a 1 cm long and 1 cm wide Si-LiNbO{sub 3}-Si sandwich structure with a 20 {mu}m thick nonlinear layer pumped by 8.5 {mu}J Ti:sapphire laser with pulse duration of 100 fs.

Bodrov, S. B. [Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod 603950 (Russian Federation); University of Nizhny Novgorod, Nizhny Novgorod 603950 (Russian Federation); Bakunov, M. I. [University of Nizhny Novgorod, Nizhny Novgorod 603950 (Russian Federation); Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod 603950 (Russian Federation); Hangyo, M. [Laser Terahertz Division, Institute of Laser Engineering, Osaka University, Osaka (Japan)

2008-11-01T23:59:59.000Z

214

Molecular-like Ag clusters sensitized near-infrared down-conversion luminescence in oxyfluoride glasses for broadband spectral modification  

SciTech Connect (OSTI)

Molecular-like Ag clusters sized at 1Ė4 nm have been stabilized in Pb/Cd-free oxyfluoride glasses, showing broadband excitation/emission characteristics and unique wavelength-dependent luminescent performance with a maximal quantum yield of 26.9%. It was experimentally demonstrated that an energy transfer route of Ag clusters ? Tb{sup 3+} ? Yb{sup 3+} occurs in Ag{sup +}/Tb{sup 3+}/Yb{sup 3+} tri-doped sample, wherein Ag clusters act as sensitizers for near-infrared down-conversion spectral modification. Hopefully, the proposed strategy that noble metal clusters being applied for harvesting solar radiation may potentially solve the sticky problems of the narrow excitation bandwidth and the low excitation efficiency in rare earth ions doped down-conversion materials.

Lin, Hang; Chen, Daqin; Yu, Yunlong; Zhang, Rui; Wang, Yuansheng [State Key Lab of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002 (China)] [State Key Lab of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002 (China)

2013-08-26T23:59:59.000Z

215

THE ESTIMATION OF STAR FORMATION RATES AND STELLAR POPULATION AGES OF HIGH-REDSHIFT GALAXIES FROM BROADBAND PHOTOMETRY  

SciTech Connect (OSTI)

We explore methods to improve the estimates of star formation rates and mean stellar population ages from broadband photometry of high-redshift star-forming galaxies. We use synthetic spectral templates with a variety of simple parametric star formation histories to fit broadband spectral energy distributions. These parametric models are used to infer ages, star formation rates, and stellar masses for a mock data set drawn from a hierarchical semi-analytic model of galaxy evolution. Traditional parametric models generally assume an exponentially declining rate of star formation after an initial instantaneous rise. Our results show that star formation histories with a much more gradual rise in the star formation rate are likely to be better templates, and are likely to give better overall estimates of the age distribution and star formation rate distribution of Lyman break galaxies (LBGs). For B- and V-dropouts, we find the best simple parametric model to be one where the star formation rate increases linearly with time. The exponentially declining model overpredicts the age by 100% and 120% for B- and V-dropouts, on average, while for a linearly increasing model, the age is overpredicted by 9% and 16%, respectively. Similarly, the exponential model underpredicts star formation rates by 56% and 60%, while the linearly increasing model underpredicts by 15% and 22%, respectively. For U-dropouts, the models where the star formation rate has a peak (near z {approx} 3) provide the best match for age-overprediction is reduced from 110% to 26%-and star formation rate-underprediction is reduced from 58% to 22%. We classify different types of star formation histories in the semi-analytic models and show how the biases behave for the different classes. We also provide two-band calibration formulae for stellar mass and star formation rate estimations.

Lee, Seong-Kook [Department of Physics and Astronomy, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218-2686 (United States); Ferguson, Henry C.; Somerville, Rachel S.; Wiklind, Tommy [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Giavalisco, Mauro, E-mail: joshua@pha.jhu.ed [Astronomy Department, University of Massachusetts, Amherst, MA 01003 (United States)

2010-12-20T23:59:59.000Z

216

Ground motion modeling of Hayward fault scenario earthquakes II:Simulation of long-period and broadband ground motions  

SciTech Connect (OSTI)

We simulate long-period (T > 1.0-2.0 s) and broadband (T > 0.1 s) ground motions for 39 scenarios earthquakes (Mw 6.7-7.2) involving the Hayward, Calaveras, and Rodgers Creek faults. For rupture on the Hayward fault we consider the effects of creep on coseismic slip using two different approaches, both of which reduce the ground motions compared with neglecting the influence of creep. Nevertheless, the scenario earthquakes generate strong shaking throughout the San Francisco Bay area with about 50% of the urban area experiencing MMI VII or greater for the magnitude 7.0 scenario events. Long-period simulations of the 2007 Mw 4.18 Oakland and 2007 Mw 4.5 Alum Rock earthquakes show that the USGS Bay Area Velocity Model version 08.3.0 permits simulation of the amplitude and duration of shaking throughout the San Francisco Bay area, with the greatest accuracy in the Santa Clara Valley (San Jose area). The ground motions exhibit a strong sensitivity to the rupture length (or magnitude), hypocenter (or rupture directivity), and slip distribution. The ground motions display a much weaker sensitivity to the rise time and rupture speed. Peak velocities, peak accelerations, and spectral accelerations from the synthetic broadband ground motions are, on average, slightly higher than the Next Generation Attenuation (NGA) ground-motion prediction equations. We attribute at least some of this difference to the relatively narrow width of the Hayward fault ruptures. The simulations suggest that the Spudich and Chiou (2008) directivity corrections to the NGA relations could be improved by including a dependence on the rupture speed and increasing the areal extent of rupture directivity with period. The simulations also indicate that the NGA relations may under-predict amplification in shallow sedimentary basins.

Aagaard, B T; Graves, R W; Rodgers, A; Brocher, T M; Simpson, R W; Dreger, D; Petersson, N A; Larsen, S C; Ma, S; Jachens, R C

2009-11-04T23:59:59.000Z

217

Spatial coherence measurement of sound in the northwest Pacific Ocean  

Science Journals Connector (OSTI)

An experiment on the transverse horizontal spatial coherence of sound propagating in the ocean was performed jointly by Chinese and Russian acousticians in the northwest Pacific Ocean in June 1990. Three hydrophones with spacings of 270 and 130 m were put in the water at a 30?m depth. The acoustic source with four cw (from 109 to 860 Hz) and a broadband pseudorandom noise signal was drifted at a depth of 100 m. Part of the measurement results of up to 140 km are presented in this paper. It seems that the spatial coherence was related to the amplitude of the received signals and rises considerably in convergence zones.

Dinghua Guan; Ruichao Zhu; Renhe Zhang; Yaoming Chen

1993-01-01T23:59:59.000Z

218

Direct and quantitative broadband absorptance micro/nano spectroscopy using FTIR and bilayer cantilever probes  

E-Print Network [OSTI]

Optical properties of micro/nano materials are important for many applications in biology, optoelectronics, and energy. In this thesis, a method is described to directly measure the quantitative absorptance spectra of ...

Hsu, Wei-Chun

2012-01-01T23:59:59.000Z

219

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

SciTech Connect (OSTI)

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

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

2013-07-08T23:59:59.000Z

220

A broadband vibrational energy harvester Louis Van Blarigan, Per Danzl, and Jeff Moehlisa)  

E-Print Network [OSTI]

vibrational energy harvesters are com- posed of a mass-spring system with a transducer,1 where vibrations in the surrounding environment act as inputs and cause the spring-mass system to oscillate. The oscillations of buckling, as measured by d. The mount is attached to a voice-coil shaker and shaken vertically

Bigelow, Stephen

Note: This page contains sample records for the topic "broadband pyranometer measurements" 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

NREL Pyrheliometer Comparisons: September 22-26, 2014 (NPC-2014)  

SciTech Connect (OSTI)

Accurate measurements of direct normal (beam) solar irradiance from pyrheliometers are important for developing and deploying solar energy conversion systems, improving our understanding of the Earth's energy budget for climate change studies, and for other science and technology applications involving solar flux. Providing these measurements places many demands on the quality system used by the operator of commercially available radiometers. Maintaining accurate radiometer calibrations that are traceable to an international standard is the first step in producing research-quality solar irradiance measurements. As with all measurement systems, absolute cavity radiometers and other types of pyrheliometers are subject to performance changes over time. NREL has developed and maintained a select group of absolute cavity radiometers with direct calibration traceability to the World Radiometric Reference (WRR), and uses these reference instruments to calibrate pyrheliometers and pyranometers using the ISO 17025 accredited Broadband Outdoor Radiometer Calibration (BORCAL) process. National Renewable Energy Laboratory (NREL) pyrheliometer comparisons (NPCs) are held annually at the Solar Radiation Research Laboratory (SRRL) in Golden, Colorado. Open to all pyrheliometer owners and operators, each NPC provides an opportunity to determine the unique WRR transfer factor (WRR-TF) for each participating pyrheliometer. By adjusting all subsequent pyrheliometer measurements by the appropriate WRR-TF, the solar irradiance data are traceable to the WRR. NPC-2014 was held September 22-26, 2014. Participants operated 36 absolute cavity radiometers and 22 conventional thermopile-based pyrheliometers to simultaneously measure clear-sky direct normal solar irradiance during this period, and this report documents the findings.

Reda, I.; Dooraghi, M.; Habte, A.

2014-10-01T23:59:59.000Z

222

Broadband calibration for magnetic probes for use in the Maryland spheromak  

Science Journals Connector (OSTI)

Magnetic probes are commonly used in plasma experiments to measure the magnetic and plasma properties of the configuration. Probes consisting of coils of copper wire encased in one or more layers of stainless?steel tubing are used both inside and outside the plasma to measure the magnetic field in the Maryland spheromak. A technique has been developed to calibrate the probes over a large frequency bandwidth using digital computer signal processing. The frequency?dependent effects of the stainless?steel tubing and the self?inductance of the coils on the recorded signal are taken into account over the entire bandwidth. This technique may also be used to take into account the eddy currents present in the metal vessel walls.

R. S. Shaw; J. H. Booske; M. J. McCarrick

1987-01-01T23:59:59.000Z

223

Experimental verification of broadband invisibility using a cloak based on inductor-capacitor networks  

Science Journals Connector (OSTI)

We demonstrate the experimental realization of an invisibility cloak based on inductor-capacitor (L-C) transmission line (TL) networks. The anisotropic medium parameters of a cloak in the cylindrical basis are controlled independently by three branches of the L-C unit cell which leads to a full-parameter realization of the cloak. A cylindrical cloak working in very-high-frequency band has been designed and fabricated with its performance measured. The nonresonant property of the TL structure results in a relatively broad bandwidth (from 24 to 40 MHz) of the realized cloak which is clearly observed in our experiment.

Xiu Liu; Chao Li; Kan Yao; Xiankun Meng; Wei Feng; Bingheng Wu; Fang Li

2009-01-01T23:59:59.000Z

224

NREL Pyrheliometer Comparison: September 16 to 27, 2013 (NPC-2013)  

SciTech Connect (OSTI)

Accurate measurements of direct normal (beam) solar irradiance from pyrheliometers are important for the development and deployment of solar energy conversion systems, improving our understanding of the Earth's energy budget for climate change studies, and for other science and technology applications involving solar flux. Providing these measurements places many demands on the quality system used by the operator of commercially available radiometers. Maintaining accurate radiometer calibrations traceable to an international standard is the first step in producing research-quality solar irradiance measurements. As with all measurement systems, absolute cavity radiometers and other types of pyrheliometers are subject to performance changes over time. NREL has developed and maintained a group of absolute cavity radiometers with direct calibration traceability to the World Radiometric Reference (WRR). These reference instruments are used by NREL to calibrate pyrheliometers and pyranometers using the ISO 17025 accredited Broadband Outdoor Radiometer Calibration (BORCAL) process (Reda et al. 2008). NPCs are held annually at the Solar Radiation Research Laboratory (SRRL) in Golden, Colorado. Open to all pyrheliometer owners/operators, e.g. NREL, NASA, NIST, NOAA, USA industry and academia, USA-DOE and other national laboratories, and national and international organizations. Each NPC provides an opportunity to determine the unique World Radiometric Reference (WRR) transfer factor (WRR-TF) for each participating pyrheliometer. By adjusting all subsequent pyrheliometer measurements by the appropriate WRR-TF, the solar irradiance data are traceable to the International System of Units through WRR.

Reda, I.; Dooraghi, M.; Habte, A.

2013-11-01T23:59:59.000Z

225

Broadband carbon monoxide laser system operating in the wavelength range of 2.5 - 8.3 {mu}m  

SciTech Connect (OSTI)

A two-cascade frequency conversion of CO-laser radiation is demonstrated in a single sample of a nonlinear ZnGeP{sub 2} crystal. The crystal is pumped by a repetitively pulsed cryogenic lowpressure CO laser operating on {approx}150 vibration - rotational transitions in the wavelength range 5.0 - 7.5 {mu}m, which corresponds to the frequency range of a half octave. In the first conversion cascade, generation of second harmonic and sum frequencies of various pairs of CO-laser radiation give {approx}350 emission lines in the wavelength range 2.5 - 3.7 {mu}m. In the second cascade, by mixing the radiation converted in the first cascade with the residual radiation of the CO laser we have obtained {approx}90 lines in the range 4.3 - 5.0 {mu}m and more than 80 lines in the range 7.5 - 8.3 {mu}m. Thus, using a single sample of the nonlinear ZnGeP{sub 2} crystal pumped by the radiation of a single CO laser we have produced a source of broadband (more than one and a half octaves) laser radiation, simultaneously operating at {approx}670 lines in the wavelength range 2.5 - 8.3 {mu}m. (lasers)

Andreev, Yu M; Ionin, Andrei A; Kinyaevsky, I O; Klimachev, Yu M; Kozlov, A Yu; Kotkov, A A; Lanskii, G V; Shaiduko, A V

2013-02-28T23:59:59.000Z

226

Anatomy of the AGN in NGC 5548: I. A global model for the broadband spectral energy distribution  

E-Print Network [OSTI]

An extensive multi-satellite campaign on NGC 5548 has revealed this archetypal Seyfert-1 galaxy to be in an exceptional state of persistent heavy absorption. Our observations taken in 2013-2014 with XMM-Newton, Swift, NuSTAR, INTEGRAL, Chandra, HST and two ground-based observatories have together enabled us to establish that this unexpected phenomenon is caused by an outflowing stream of weakly ionised gas (called the obscurer), extending from the vicinity of the accretion disk to the broad-line region. In this work we present the details of our campaign and the data obtained by all the observatories. We determine the spectral energy distribution of NGC 5548 from near-infrared to hard X-rays by establishing the contribution of various emission and absorption processes taking place along our line of sight towards the central engine. We thus uncover the intrinsic emission and produce a broadband continuum model for both obscured (average summer 2013 data) and unobscured ($<$ 2011) epochs of NGC 5548. Our res...

Mehdipour, M; Kriss, G A; Cappi, M; Petrucci, P -O; Steenbrugge, K C; Arav, N; Behar, E; Bianchi, S; Boissay, R; Branduardi-Raymont, G; Costantini, E; Ebrero, J; Di Gesu, L; Harrison, F A; Kaspi, S; De Marco, B; Matt, G; Paltani, S; Peterson, B M; Ponti, G; NuŮez, F Pozo; De Rosa, A; Ursini, F; de Vries, C P; Walton, D J; Whewell, M

2015-01-01T23:59:59.000Z

227

Broadband spectroscopy of the eclipsing high mass X-ray binary 4U 1700-37 with Suzaku  

E-Print Network [OSTI]

We present the results obtained from broadband spectroscopy of the high mass X-ray binary 4U 1700-37 using data from a Suzaku observation in 2006 September 13-14 covering 0.29-0.72 orbital phase range. The light curves showed significant and rapid variation in source flux during entire observation. We did not find any signature of pulsations in the light curves. However, a quasi-periodic oscillation at ~20 mHz was detected in the power density spectrum of the source. The 1-70 keV spectrum was fitted with various continuum models. However, we found that the partially absorbed high energy cutoff power-law and Negative and Positive power-law with Exponential cutoff (NPEX) models described the source spectrum well. Iron emission lines at 6.4 keV and 7.1 keV were detected in the source spectrum. An absorption like feature at ~39 keV was detected in the residuals while fitting the data with NPEX model. Considering the feature as cyclotron absorption line, the surface magnetic field of the neutron star was estimated...

Jaisawal, Gaurava K

2015-01-01T23:59:59.000Z

228

Deep Broadband Observations of the Distant Gamma-ray Blazar PKS 1424+240  

E-Print Network [OSTI]

We present deep VERITAS observations of the blazar PKS 1424+240, along with contemporaneous Fermi Large Area Telescope, Swift X-ray Telescope and Swift UV Optical Telescope data between 2009 February 19 and 2013 June 8. This blazar resides at a redshift of $z\\ge0.6035$, displaying a significantly attenuated gamma-ray flux above 100 GeV due to photon absorption via pair-production with the extragalactic background light. We present more than 100 hours of VERITAS observations from three years, a multiwavelength light curve and the contemporaneous spectral energy distributions. The source shows a higher flux of (2.1$\\pm0.3$)$\\times10^{-7}$ ph m$^{-2}$s$^{-1}$ above 120 GeV in 2009 and 2011 as compared to the flux measured in 2013, corresponding to (1.02$\\pm0.08$)$\\times10^{-7}$ ph m$^{-2}$s$^{-1}$ above 120 GeV. The measured differential very high energy (VHE; $E\\ge100$ GeV) spectral indices are $\\Gamma=$3.8$\\pm$0.3, 4.3$\\pm$0.6 and 4.5$\\pm$0.2 in 2009, 2011 and 2013, respectively. No significant spectral change...

Archambault, S; Behera, B; Beilicke, M; Benbow, W; Berger, K; Bird, R; Biteau, J; Bugaev, V; Byrum, K; Cardenzana, J V; Cerruti, M; Chen, X; Ciupik, L; Connolly, M P; Cui, W; Dumm, J; Errando, M; Falcone, A; Federici, S; Feng, Q; Finley, J P; Fleischhack, H; Fortson, L; Furniss, A; Galante, N; Gillanders, G H; Griffin, S; Griffiths, S T; Grube, J; Gyuk, G; Hanna, D; Holder, J; Hughes, G; Humensky, T B; Johnson, C A; Kaaret, P; Kertzman, M; Khassen, Y; Kieda, D; Krawczynski, H; Krennrich, F; Kumar, S; Lang, M J; Madhavan, A S; Maier, G; McCann, A; Meagher, K; Moriarty, P; Mukherjee, R; Nieto, D; de Bhroithe, A O'Faolain; Ong, R A; Otte, A N; Park, N; Pohl, M; Popkow, A; Prokoph, H; Quinn, J; Ragan, K; Rajotte, J; Reyes, L C; Reynolds, P T; Richards, G T; Roache, E; Sembroski, G H; Shahinyan, K; Staszak, D; Telezhinsky, I; Tucci, J V; Tyler, J; Varlotta, A; Vassiliev, V V; Vincent, S; Wakely, S P; Weinstein, A; Welsing, R; Wilhelm, A; Williams, D A; Ackermann, M; Ajello, M; Albert, A; Baldini, L; Bastieri, D; Bellazzini, R; Bissaldi, E; Bregeon, J; Buehler, R; Buson, S; Caliandro, G A; Cameron, R A; Caraveo, P A; Cavazzuti, E; Charles, E; Chiang, J; Ciprini, S; Claus, R; Cutini, S; D'Ammando, F; de Angelis, A; de Palma, F; Dermer, C D; Digel, S W; Di Venere, L; Drell, P S; Favuzzi, C; Franckowiak, A; Fusco, P; Gargano, F; Gasparrini, D; Giglietto, N; Giordano, F; Giroletti, M; Grenier, I A; Guiriec, S; Jogler, T; Kuss, M; Larsson, S; Latronico, L; Longo, F; Loparco, F; Lubrano, P; Madejski, G M; Mayer, M; Mazziotta, M N; Michelson, P F; Mizuno, T; Monzani, M E; Morselli, A; Murgia, S; Nuss, E; Ohsugi, T; Ormes, J F; Perkins, J S; Piron, F; Pivato, G; Raino, S; Razzano, M; Reimer, A; Reimer, O; Ritz, S; Schaal, M; Sgro, C; Siskind, E J; Spinelli, P; Takahashi, H; Tibaldo, L; Tinivella, M; Troja, E; Vianello, G; Werner, M; Wood, M

2014-01-01T23:59:59.000Z

229

vibration measurement  

Science Journals Connector (OSTI)

vibration measurement ? ErschŁtterungsmessung, Schwingungsmessung f [Schwingungsmessungen dienen dazu, die Schwingungsanfšlligkeit von Bauwerken realitštsnah zu erfassen

2014-08-01T23:59:59.000Z

230

Tailoring broadband light trapping of GaAs and Si substrates by self-organised nanopatterning  

SciTech Connect (OSTI)

We report on the formation of high aspect ratio anisotropic nanopatterns on crystalline GaAs (100) and Si (100) substrates exploiting defocused Ion Beam Sputtering assisted by a sacrificial self-organised Au stencil mask. The tailored optical properties of the substrates are characterised in terms of total reflectivity and haze by means of integrating sphere measurements as a function of the morphological modification at increasing ion fluence. Refractive index grading from sub-wavelength surface features induces polarisation dependent anti-reflection behaviour in the visible-near infrared (VIS-NIR) range, while light scattering at off-specular angles from larger structures leads to very high values of the haze functions in reflection. The results, obtained for an important class of technologically relevant materials, are appealing in view of photovoltaic and photonic applications aiming at photon harvesting in ultrathin crystalline solar cells.

Martella, C.; Chiappe, D.; Mennucci, C.; Buatier de Mongeot, F. [Dipartimento di Fisica, Universitŗ di Genova, via Dodecaneso 33, I-16146 Genova (Italy)

2014-05-21T23:59:59.000Z

231

Research Highlight  

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

A Proposed Measurement Standard for Diffuse Radiation Flux A Proposed Measurement Standard for Diffuse Radiation Flux Download a printable PDF Submitter: Michalsky, J. J., DOC/NOAA/OAR/ESRL Area of Research: Radiation Processes Working Group(s): Radiative Processes Journal Reference: Michalsky, J. J., C. Gueymard, P. Kiedron, L. J. B. McArthur, R. Philipona, and T. Stoffel, 2007: A proposed working standard for the measurement of diffuse horizontal shortwave irradiance, J. Geophys. Res., 112, D16112, doi:10.1029/2007JD008651. The three pyranometers proposed for the international standard for diffuse flux are shown here in action during the 2006 campaign at the ACRF SGP site. Of note are the shadows of the blocking balls on the domes of each pyranometer. The blocking balls are moved by a solar tracker to continuously shade the pyranometers.

232

haeffelin-99  

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

Shortwave Radiation Measurements: Shortwave Radiation Measurements: Experimental Tests and Numerical Simulations of Pyranometers M. Haeffelin, A. M. Smith, and J. R. Mahan Virginia Polytechnic Institute and State University Blacksburg, Virginia C. K. Rutledge Analytical Services and Materials, Inc. Hampton, Virginia S. Kato Hampton University Hampton, Virginia Introduction Pyranometers are used extensively in networks around the globe to monitor solar radiation. Uncertainties in irradiances measured by pyranometers are due in part to the detector sensitivity to thermal radiation exchange within the instrument, often referred to as "instrument offset." Bush et al. (1999) established a relationship between the outer-dome-to-body temperature difference and the instrument offset at night and presented possible corrections for the daytime offsets. Alberta and

233

Evaluation of Radiometers Deployed at the National Renewable Energy Laboratory's Solar Radiation Research Laboratory  

SciTech Connect (OSTI)

This study analyzes the performance of various commercially available radiometers used for measuring global horizontal irradiances and direct normal irradiances. These include pyranometers, pyrheliometers, rotating shadowband radiometers, and a pyranometer with fixed internal shading and are all deployed at the National Renewable Energy Laboratory's Solar Radiation Research Laboratory. Data from 32 global horizontal irradiance and 19 direct normal irradiance radiometers are presented. The radiometers in this study were deployed for one year (from April 1, 2011, through March 31, 2012) and compared to measurements from radiometers with the lowest values of estimated measurement uncertainties for producing reference global horizontal irradiances and direct normal irradiances.

Habte, A.; Wilcox, S.; Stoffel, T.

2014-02-01T23:59:59.000Z

234

ASTRO-H White Paper - Broad-band Spectroscopy and Polarimetry  

E-Print Network [OSTI]

The broad energy range spanned by ASTRO-H instruments, from ~0.3 to 600 keV, with its high spectral resolution calorimeter and sensitive hard X-ray imaging, offers unique opportunities to study black holes and their environments. The ability to measure polarization is particularly novel, with potential sources including blazars, Galactic pulsars and X-ray binaries. In this White Paper, we present an overview of the synergistic instrumental capabilities and the improvements over prior missions. We also show how ASTRO-H fits into the multi-wavelength landscape. We present in more detail examples and simulations of key science ASTRO-H can achieve in a typical 100 ksec observation when data from all four instruments are combined. Specifically, we consider observations of black-hole source (Cyg X-1 and GRS 1915+105), blazars (Mrk 421 and Mrk 501), a quasar (3C 273), radio galaxies (Centaurus A and 3C 120), and active galaxies with a strong starburst (Circinus and NGC 4945). We will also address possible new discov...

Coppi, P; Done, C; Fukazawa, Y; Gandhi, P; Hagino, K; LaMassa, S; Laurent, P; Madejski, G; Mizuno, T; Mukai, K; Odaka, H; Tajima, H; Tanaka, Y; Tombesi, F; Urry, M

2014-01-01T23:59:59.000Z

235

Status of SuperSpec: A Broadband, On-Chip Millimeter-Wave Spectrometer  

E-Print Network [OSTI]

SuperSpec is a novel on-chip spectrometer we are developing for multi-object, moderate resolution (R = 100 - 500), large bandwidth (~1.65:1) submillimeter and millimeter survey spectroscopy of high-redshift galaxies. The spectrometer employs a filter bank architecture, and consists of a series of half-wave resonators formed by lithographically-patterned superconducting transmission lines. The signal power admitted by each resonator is detected by a lumped element titanium nitride (TiN) kinetic inductance detector (KID) operating at 100-200 MHz. We have tested a new prototype device that is more sensitive than previous devices, and easier to fabricate. We present a characterization of a representative R=282 channel at f = 236 GHz, including measurements of the spectrometer detection efficiency, the detector responsivity over a large range of optical loading, and the full system optical efficiency. We outline future improvements to the current system that we expect will enable construction of a photon-noise-lim...

Hailey-Dunsheath, S; Barry, P S; Bradford, C M; Chattopadhyay, G; Day, P; Doyle, S; Hollister, M; Kovacs, A; LeDuc, H G; Mauskopf, P; McKenney, C M; Monroe, R; O'Brient, R; Padin, S; Reck, T; Swenson, L; Tucker, C E; Zmuidzinas, J

2015-01-01T23:59:59.000Z

236

3-D Model of Broadband Emission from Supernova Remnants Undergoing Non-linear Diffusive Shock Acceleration  

SciTech Connect (OSTI)

We present a 3-dimensional model of supernova remnants (SNRs) where the hydrodynamical evolution of the remnant is modeled consistently with nonlinear diffusive shock acceleration occurring at the outer blast wave. The model includes particle escape and diffusion outside of the forward shock, and particle interactions with arbitrary distributions of external ambient material, such as molecular clouds. We include synchrotron emission and cooling, bremsstrahlung radiation, neutral pion production, inverse-Compton (IC), and Coulomb energy-loss. Boardband spectra have been calculated for typical parameters including dense regions of gas external to a 1000 year old SNR. In this paper, we describe the details of our model but do not attempt a detailed fit to any specific remnant. We also do not include magnetic field amplification (MFA), even though this effect may be important in some young remnants. In this first presentation of the model we don't attempt a detailed fit to any specific remnant. Our aim is to develop a flexible platform, which can be generalized to include effects such as MFA, and which can be easily adapted to various SNR environments, including Type Ia SNRs, which explode in a constant density medium, and Type II SNRs, which explode in a pre-supernova wind. When applied to a specific SNR, our model will predict cosmic-ray spectra and multi-wavelength morphology in projected images for instruments with varying spatial and spectral resolutions. We show examples of these spectra and images and emphasize the importance of measurements in the hard X-ray, GeV, and TeV gamma-ray bands for investigating key ingredients in the acceleration mechanism, and for deducing whether or not TeV emission is produced by IC from electrons or pion-decay from protons.

Lee, Shiu-Hang; Kamae, Tuneyoshi; Ellison, Donald C.

2008-07-02T23:59:59.000Z

237

BROADBAND ESO/VISIR-SPITZER INFRARED SPECTROSCOPY OF THE OBSCURED SUPERGIANT X-RAY BINARY IGR J16318-4848  

SciTech Connect (OSTI)

A new class of X-ray binaries has recently been discovered by the high-energy observatory INTEGRAL. It is composed of intrinsically obscured supergiant high-mass X-ray binaries, unveiled by means of multi-wavelength X-ray, optical, near- and mid-infrared observations, in particular, photometric and spectroscopic observations using ESO facilities. However, the fundamental questions about these intriguing sources, namely, their formation, evolution, and the nature of their environment, are still unsolved. Among them, IGR J16318-4848, a compact object orbiting around a supergiant B[e] star, seems to be one of the most extraordinary celestial sources of our Galaxy. We present here new ESO/Very Large Telescope (VLT) VISIR mid-infrared (MIR) spectroscopic observations of this source. First, line diagnostics allow us to confirm the presence of absorbing material (dust and cold gas) enshrouding the whole binary system, and to characterize the nature of this material. Second, by fitting broadband near- to mid-infrared spectral energy distribution, including ESO NTT/SofI, VLT/VISIR, and Spitzer data, with a phenomenological model for sgB[e] stars, we show that the star is surrounded by an irradiated rim heated to a temperature of {approx}3800-5500 K, along with a viscous disk component at an inner temperature of {approx}750 K. VISIR data allow us to exclude the spherical geometry for the dust component. This detailed study will allow us in the future to get better constraints on the formation and evolution of such rare and short-living high-mass X-ray binary systems in our Galaxy.

Chaty, S.; Rahoui, F., E-mail: sylvain.chaty@cea.fr, E-mail: frahoui@cfa.harvard.edu [AIM (UMR-E 9005 CEA/DSM-CNRS-Universite Paris Diderot) Irfu/Service d'Astrophysique, Centre de Saclay, FR-91191 Gif-sur-Yvette Cedex (France)

2012-06-01T23:59:59.000Z

238

Measurement fundamentals  

SciTech Connect (OSTI)

The need to have accurate petroleum measurement is obvious. Petroleum measurement is the basis of commerce between oil producers, royalty owners, oil transporters, refiners, marketers, the Department of Revenue, and the motoring public. Furthermore, petroleum measurements are often used to detect operational problems or unwanted releases in pipelines, tanks, marine vessels, underground storage tanks, etc. Therefore, consistent, accurate petroleum measurement is an essential part of any operation. While there are several methods and different types of equipment used to perform petroleum measurement, the basic process stays the same. The basic measurement process is the act of comparing an unknown quantity, to a known quantity, in order to establish its magnitude. The process can be seen in a variety of forms; such as measuring for a first-down in a football game, weighing meat and produce at the grocery, or the use of an automobile odometer.

Webb, R.A. [Marathon Pipe Line Co., Findlay, OH (United States)

1995-12-01T23:59:59.000Z

239

Procedure for Generating Data Quality Reports for SIRS Radiometric Measurements  

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

Procedure for Generating Data Quality Reports Procedure for Generating Data Quality Reports for SIRS Radiometric Measurements M. H. L. Anderberg, F. P. Rael, and T. L. Stoffell National Renewable Energy Laboratory Golden, Colorado Introduction The Atmospheric Radiation Measurement (ARM) Program needs high-quality broadband shortwave (SW) (solar) and longwave (LW) irradiance information for the development and validation of atmospheric circulation and climate models. To this end, the National Renewable Energy Laboratory (NREL) performs a quality assessment of the data from 22 Solar Infrared Stations (SIRS) in the Southern Great Plains (SGP). Data quality reports (DQRs) are instrumental in passing the resultant information to the scientific community. The value of these reports depends on clear and consistent

240

Wire Scanner Beam Profile Measurements: LANSCE Facility Beam Development  

SciTech Connect (OSTI)

The Los Alamos Neutron Science Center (LANSCE) is replacing Wire Scanner (WS) beam profile measurement systems. Three beam development tests have taken place to test the new wire scanners under beam conditions. These beam development tests have integrated the WS actuator, cable plant, electronics processors and associated software and have used H{sup -} beams of different beam energy and current conditions. In addition, the WS measurement-system beam tests verified actuator control systems for minimum profile bin repeatability and speed, checked for actuator backlash and positional stability, tested the replacement of simple broadband potentiometers with narrow band resolvers, and tested resolver use with National Instruments Compact Reconfigurable Input and Output (cRIO) Virtual Instrumentation. These beam tests also have verified how trans-impedance amplifiers react with various types of beam line background noise and how noise currents were not generated. This paper will describe these beam development tests and show some resulting data.

Gilpatrick, John D. [Los Alamos National Laboratory; Batygin, Yuri K. [Los Alamos National Laboratory; Gonzales, Fermin [Los Alamos National Laboratory; Gruchalla, Michael E. [Los Alamos National Laboratory; Kutac, Vincent G. [Los Alamos National Laboratory; Martinez, Derwin [Los Alamos National Laboratory; Sedillo, James Daniel [Los Alamos National Laboratory; Pillai, Chandra [Los Alamos National Laboratory; Rodriguez Esparza, Sergio [Los Alamos National Laboratory; Smith, Brian G. [Los Alamos National Laboratory

2012-05-15T23:59:59.000Z

Note: This page contains sample records for the topic "broadband pyranometer measurements" 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

ARM - Measurements  

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

Measurement Instrument Sponsor Aircraft State PositionVelocity @ 10Hz Trimble DSM(tm) AAF PitchRollAzimuth Trimble Advanced Navigation System (TANS)10Hz AAF...

242

Shell Measures  

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

Residential Commercial Commercial Industrial Lighting Energy Smart Grocer Program HVAC Program Shell Measures Commercial Kitchen & Food Service Equipment Plug Load New...

243

Atmospheric Radiation Measurement Program - unmanned aerospace vehicle: The follow-on phase  

SciTech Connect (OSTI)

Unmanned Aerospace Vehicle (UAV) demonstration flights (UDF) are designed to provide an early demonstration of the scientific utility of UAVs by using an existing UAV and instruments to measure broadband radiative flux profiles under clear sky conditions. UDF is but the first of three phases of ARM-UAV. The second phase significantly extends both the UAV measurement techniques and the available instrumentation to allow both multi-UAV measurements in cloudy skies and extended duration measurements in the tropopause. These activities build naturally to the third and final phase, that of full operational capability, i.e., UAVs capable of autonomous operations at 20-km altitudes for multiple days with a full suite of instrumentation for measuring radiative flux, cloud properties, and water vapor profiles.

Vitko, J. Jr. [Sandia National Labs., Livermore, CA (United States)

1995-04-01T23:59:59.000Z

244

Broadband modelling of short gamma-ray bursts with energy injection from magnetar spin-down and its implications for radio detectability  

E-Print Network [OSTI]

The magnetar model has been proposed to explain the apparent energy injection in the X-ray light curves of short gamma-ray bursts (SGRBs), but its implications across the full broadband spectrum are not well explored. We investigate the broadband modelling of four SGRBs with evidence for energy injection in their X-ray light curves, applying a physically motivated model in which a newly-formed magnetar injects energy into a forward shock as it loses angular momentum along open field lines. By performing an order of magnitude search for the underlying physical parameters in the blast wave, we constrain the characteristic break frequencies of the synchrotron spectrum against their manifestations in the available multi-wavelength observations for each burst. The application of the magnetar energy injection profile restricts the succesful matches to a limited family of models that are self-consistent within the magnetic dipole spin-down framework. Because of this, we are able to produce synthetic light curves tha...

Gompertz, B P; O'Brien, P T; Wynn, G A; Wiersema, K

2014-01-01T23:59:59.000Z

245

The effect of broad-band Alfven-cyclotron waves spectra on the preferential heating and differential acceleration of He{sup ++} ions in the solar wind  

SciTech Connect (OSTI)

In anticipation of results from inner heliospheric missions such as the Solar Orbiter and the Solar Probe we present the results from 1.5D hybrid simulations to study the role of magnetic fluctuations for the heating and differential acceleration of He{sup ++} ions in the solar wind. We consider the effects of nonlinear Alfven-cyclotron waves at different frequency regimes. Monochromatic nonlinear Alfven-alpha-cyclotron waves are known to preferentially heat and accelerate He{sup ++} ions in collisionless low beta plasma. In this study we demonstrate that these effects are preserved when higherfrequency monochromatic and broad-band spectra of Alfven-proton-cyclotron waves are considered. Comparison between several nonlinear monochromatic waves shows that the ion temperatures, anisotropies and relative drift are quantitatively affected by the shift in frequency. Including a broad-band wave-spectrum results in a significant reduction of both the parallel and the perpendicular temperature components for the He{sup ++} ions, whereas the proton heating is barely influenced, with the parallel proton temperature only slightly enhanced. The differential streaming is strongly affected by the available wave power in the resonant daughter ion-acoustic waves. Therefore for the same initial wave energy, the relative drift is significantly reduced in the case of initial wave-spectra in comparison to the simulations with monochromatic waves.

Maneva, Y. G. [Department of Physics, Catholic University of America, Washington DC, 20064 (United States) and Heliophysics Science Devision, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Ofman, L. [Department of Physics, Catholic University of America, Washington, DC 20064 (United States) and Heliophysics Science Devision, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Vinas, A. F. [Heliophysics Science Devision, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)

2013-06-13T23:59:59.000Z

246

Implementing the National Broadband  

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

SPACE DATA CORPORATION SPACE DATA CORPORATION Space Data is the leader in high altitude balloon borne communications platforms where between 65-100,000 feet we have flown over 20,000 commercial SkySite¬ģ flights totaling over 250,000 flight hours as well as supply the military with our StarFighter¬ģ platform which extends 2 way radio communications from under 10 miles to over 400 miles. We were founded in 1999 and to develop our technology we decided that the ReFlex paging protocol was appropriate and that FCC licensed spectrum was available. Hence we participated in FCC Auctions 40, 41 and 50 and through secondary market transactions accumulated almost 2 of the 3 MHz allocated to Narrowband PCS (NPCS) in the 901/930/940 MHz bands. Through the auctions and continued subsequent transactions we have been able to

247

Implementing the National Broadband  

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

GREAT RIVER ENERGY GREAT RIVER ENERGY I. Introduction a. Identification/description of our company Great River Energy (GRE) is a not-for-profit generation and transmission cooperative which provides wholesale electricity to more than 1.7 million people through 28 member distribution cooperatives in Minnesota and Wisconsin. Great River Energy is the second largest utility in the state, based on generating capacity, and the sixth largest generation and transmission (G&T) cooperative in the United States. Great River Energy's member cooperatives range from those in the outer-ring suburbs of the Twin Cities to the Arrowhead region of Minnesota to the farmland of southwestern Minnesota. Great River Energy's largest

248

Implementing the National Broadband  

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

TACOMA PUBLIC UTILITIES TACOMA PUBLIC UTILITIES 3628 S. 35 TH ST. TACOMA WASHINGTON 98419 I. Introduction a. Identification/description of your company. Tacoma Public Utilities (TPU) is owned by the City of Tacoma. TPU management reports to a separate Public Utility Board that is accountable to the Tacoma City Council. The Utility comprises three main operating divisions: Water, Power and Rail. b. Overview of communications networks i. Tacoma Public Utilities (TPU), operates several Private radio networks. Tacoma Power (TPWR), uses an extensive private Microwave system, a private wide-area VHF land mobile radio system at all Hydro facilities with VHF paging, and a private trunked-900 MHz voice radio system. Tacoma Rail operates a wide-area VHF radio system on licensed Rail frequencies. Tacoma

249

Implementing the National Broadband  

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

Consumer and the Consumer and the Smart Grid: Data Access, Third Party Use and Privacy NBP RFI: Data Access, Third Party Use and Privacy COMMENTS OF BALTIMORE GAS & ELECTRIC COMPANY I. Introduction BGE is the nation's oldest and most experienced utility company. It has met the energy needs of Central Maryland for nearly 200 years. Today, it serves more than 1.2 million business and residential electric customers and approximately 650,000 gas customers in an economically diverse, 2,300-square-mile area encompassing Baltimore City and all or part of ten central Maryland counties. BGE already has many systems that it considers to be "smart." For example:

250

Implementing the National Broadband  

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

CROW WING POWER CROW WING POWER I. Introduction a. Identification/description of our company Crow Wing Power is a not-for-profit electric distribution cooperative which provides retail electricity to over 41,500 consumers in central Minnesota. Crow Wing Power owns and operates approximately 2,500 miles of overhead distribution lines and 2,700 miles of underground distribution lines. Our service territory cover approximately 4000 sq. miles and consists of flat farm fields in the south and to the north there are rolling hills, many lakes and heavy tree cover. Our main power supplier is Great River Energy. We also buy power from Basin Electric. b. Overview of communications networks 1. User of Great River Energy 700 MHz system. 2. Fiber 3. VHF Land Mobile Radios

251

Implementing the National Broadband  

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

EAST CENTRAL ENERGY-MINNESOTA EAST CENTRAL ENERGY-MINNESOTA I. Introduction a. Identification/description of your company. East Central Energy is a non-profit electric cooperative serving 57,000 customers and is located in east central Minnesota and northwestern Wisconsin. The cooperative serves an area of approximately 4,300 square miles. The geography varies from flat to large rolling hills with many lakes and wooded areas. For the most part the area is relatively sparsely populated. The average consumer density is about 7 consumers per mile. All power purchases are from our cooperative power supplier Great River Energy (GRE). II. Executive Summary Because of the lack of ubiquitous coverage by major carriers or operating telephone companies, East Central Energy has contracted with our G&T, Great River Energy

252

Implementing the National Broadband  

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

THE LOWER COLORADO RIVER AUTHORITY (LCRA) THE LOWER COLORADO RIVER AUTHORITY (LCRA) I. Introduction a. Identification/description of your company. LCRA is a conservation and reclamation district created by the Texas Legislature in 1934. It has no taxing authority and operates solely on utility revenues and fees generated from supplying energy, water and community services. LCRA supplies low-cost electricity for Central Texas, manages water supplies and floods in the lower Colorado River basin, develops water and wastewater utilities, provides public parks, and supports community and economic development in 58 Texas counties. LCRA is not an electric distribution utility but it sells wholesale electricity to more than 40 retail utilities, including cities and electric cooperatives

253

Implementing the National Broadband  

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

STEELE-WASECA COOPERATIVE ELECTRIC STEELE-WASECA COOPERATIVE ELECTRIC I. Introduction a. Identification/description of your company. Steele-Waseca Cooperative Electric is a distribution cooperative that mainly serves the rural area of the three counties of Rice, Steele, and Waseca in southwestern Minnesota. Some of Steele-Waseca Cooperative Electric's service territory also exists in the surrounding counties of Blue Earth, Dodge, Faribault, Freeborn and Le Sueur. With headquarters in Owatonna, MN, Steele-Waseca Cooperative Electric serves 9,583 members. The majority of the members served are in rural, agricultural areas though there are residential areas in Steele-Waseca Cooperative Electric territory in the bedroom communities of Medford and Lonsdale. Industrial and commercial

254

Implementing the National Broadband  

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

AVISTA CORPORATION AVISTA CORPORATION I. Introduction Founded in 1889, Avista engages in energy production, transmission and distribution, as well as other energy-related activities. An investor-owned utility (New York Stock Exchange ticker symbol: AVA) with annual revenues of more than $1.5 billion, Avista provides electric service to 356,000 customers and natural gas to 316,000 customers in a service territory of more than 30,000 square miles. We serve those customers with a mix of hydro, natural gas, coal, biomass, wind and other generation delivered over 2,600 miles of transmission line, 17,800 miles of distribution lines and 7,600 miles of natural gas distribution mains. Avista is headquartered in Spokane, Washington, and our nearly 1,600 employees work in

255

Implementing the National Broadband  

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

DAKOTA ELECTRIC ASSOCIATION DAKOTA ELECTRIC ASSOCIATION I. Introduction a. Identification/description of our company Dakota Electric Association (DEA) is an Incorporated Cooperative Association which distributes electricity to more than 100,000 members in Dakota County and surrounding areas. DEA is the second largest electric cooperative in the state of Minnesota, and is a member cooperative of Great River Energy (GRE). II. Executive Summary DEA has deployed a fully integrated IP network to 26 substation sites. An IP based network transports data information for Supervisory Control and Data Acquisition (SCADA) and Load Management systems. A private Wide Area Network (WAN) was implemented by DEA in 2001 due to lack of comprehensive coverage by major carriers. In addition to the WAN, DEA relies on commercial services to communicate with load

256

Implementing the National Broadband  

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

MEEKER COOPERATIVE LIGHT AND POWER-MINNESOTA MEEKER COOPERATIVE LIGHT AND POWER-MINNESOTA I. Introduction a. Identification/description of your company. Meeker Cooperative Light and Power (MCLP) is a non-profit electric cooperative serving 9120 consumers and is located in central Minnesota. The cooperative serves an area of approximately 1410 square miles. The geography varies from flat to moderate rolling hills with many lakes and wooded areas. For the most part the area is relatively sparsely populated. The average consumer density is less than five consumers per mile. All power purchases are from our cooperative power suppliers of Basin Electric Power COOP and Great River Energy (GRE). Overview of communications networks 1. 220 MHz radio point to point 2. 900 MHz MAS radio

257

Beam dynamics simulations and measurements at the Project X Test Facility  

SciTech Connect (OSTI)

Project X, under study at Fermilab, is a multitask high-power superconducting RF proton beam facility, aiming to provide high intensity protons for rare processes experiments and nuclear physics at low energy, and simultaneously for the production of neutrinos, as well as muon beams in the long term. A beam test facility - former known as High Intensity Neutrino Source (HINS) - is under commissioning for testing critical components of the project, e.g. dynamics and diagnostics at low beam energies, broadband beam chopping, RF power generation and distribution. In this paper we describe the layout of the test facility and present beam dynamics simulations and measurements.

Gianfelice-Wendt, E.; Scarpine, V.E.; Webber, R.C.; /Fermilab

2011-03-01T23:59:59.000Z

258

Abstract Measurement  

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

however, are not well understood in this energy range. This dissertation presents a measurement of the ratio of CC + to CCQE cross-sections for muon neutrinos on mineral oil (CH...

259

A Measuring  

Office of Scientific and Technical Information (OSTI)

clozapine. Relation to extrapyramidal side ffects. Arch Gen Psychiatry 1992; 49538-544. Smith M, Wolf AP, Brodie JD, et. al. Serial '*F-N- methylspiroperidol PET studies to measure...

260

15 - Measurement  

Science Journals Connector (OSTI)

Publisher Summary This chapter focuses on the various methods and equipments used in the measurement of liquids and gases in pipelines. Streams that transport mixed natural gas liquids require the use of mass measurement to accurately account for the volume of the components, which make up the mix. Mass measurement eliminates the effects of non-ideal mixing and the need for compressibility factors. The measurement system that provides basic simplicity, reliability, wide acceptance, and the capability of handling variable mix streams without breaking new frontiers in measurement methods is the orifice flow measuring element with online density meter and microprocessor flow computer. The orifice is a static device generally inert to the measured fluid conditions, and calibration consists of simple dimensional measurement and conformance to specified physical tolerances. The second element, the density meter, is an external unit that is easily isolated from the flowing stream for calibration, inspection, and maintenance. The relative insensitivity of CO2 density to small changes in pressure in the primary flow to the orifice meters permits locating the density meter upstream of the meter manifold, thereby serving several meters. The microprocessor flow computer, or third element of the system, is essential to achieve the advantages of integrated mass flow, which comes from the ability of the computer to make computations in essentially "real time." A development program to improve the overall uncertainty of orifice metering was initiated by Shell Pipeline Corporation. The program's goal was to develop an economical method for proving ethylene orifice meters under actual operating conditions. Shell's ethylene systems are operated in the dense phase fluid region due to lower transportation costs. The ethylene meter stations operate in two regions, the dense-phase fluid and single-phase gas regions.

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "broadband pyranometer measurements" 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

Synthesis of Space-Filling Curves Through Measure- Preserving ...  

E-Print Network [OSTI]

... des courbes ?-denses,. Economica, Paris, 2005 (in French). ... [8] H. A. Ghali and T. A. Moselhy, Broad-band and circularly polarized space- filling-based slot†...

Administrador

2010-04-08T23:59:59.000Z

262

Bulletin of the Seismological Society of America, Vol. 95, No. 3, pp. 12021208, June 2005, doi: 10.1785/0120040098 Broadband Seismic Noise Analysis of the Himalayan Nepal Tibet  

E-Print Network [OSTI]

, doi: 10.1785/0120040098 Broadband Seismic Noise Analysis of the Himalayan Nepal Tibet Seismic at sites to stabilize after deployment noise as part of the Himalayan Nepal Tibet Seismic Experiment (HIMNT seismometer deployed in Nepal and Tibet and then compared them with the high-noise model and low-noise Model

Sheehan, Anne F.

263

Thunderhead Radiation Measurements and Radiative Flux Analysis in Support of STORMVEX  

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

Thunderhead Radiation Thunderhead Radiation Measurements and Radiative Flux Analysis in Support of STORMVEX Chuck Long Jay Mace Intent * Provide downwelling broadband radiation measurements at Thunderhead * Physically small footprint portable system * Designed to provide inputs necessary for Radiative Flux Analysis Basic RFA System COPS Hornisgrinde Deployment 1200m elevation System Components * Eppley ventilated PSP * Eppley ventilated PIR * Delta-T SPN-1 * Vaisala HMP-50 T/RH probe * Campbell CR23X datalogger SPN-1 Radiometer * Uses 7 thermopile detectors and a patented shading pattern * Measures Total and Diffuse SW with no moving parts * Includes internal heaters Relative accuracy StDev = 13.6 Winter Mountain Deployment Frost/Snow Mitigation * NSA Heated Ventilator Evaluation IOP - Testing various configurations and

264

Measuring Terrorism  

E-Print Network [OSTI]

Terrorism will be high on the political agenda for many years to come. Various policies are open to a government fighting terrorism but, in any case, considerable costs are involved. In the competition for political support, the costs and benefits of anti-terrorism policies will be debated. Better information about terrorism and its consequences can improve policy outcome if there is electoral competition. Over the last few years, economic scholars have analysed the effects terrorist acts have on various aspects of the economy. The findings of these impact studies are summarised in this paper. They capture, however, only part of the overall utility losses. Hence, several approaches to value public goods and conceptual issues concerning their application to terrorism are discussed. In particular, the hedonic market approach, the averting behaviour method, the contingent valuation method and vote and popularity functions are reviewed. Further, an exploratory analysis of estimating individuals í utility losses using life satisfaction or happiness data is presented. This paper also discusses a substantially different approach combining measurement and decision-making, namely popular referenda.

Bruno S. Frey; Simon Luechinger

2003-01-01T23:59:59.000Z

265

Magnetotelluric measurements  

SciTech Connect (OSTI)

The ideas of flux quantization and Josephson tunneling are reviewed, and the operation of the dc SQUID as a magnetometer is described. The SQUID currently used for magnetotellurics has a sensitivity of 10/sup -14/ T Hz/sup -1/2/, a dynamic range at 10/sup 7/ in a 1 Hz bandwidth, a frequency response from 0 to 40 kHz, and a slewing rate of 5 x 10/sup -5/T s/sup -1/. Recent improvements in sensitivity are discussed: SQUIDS are rapidly approaching the limit imposed by the uncertainty principle. The essential ideas of magnetotelluric (MT) measurements are outlined, and it is shown how the remote reference method can lead to major reductions in bias errors compared to more conventional schemes. The field techniques of the Berkeley group are described. The practical application of MT requires that amplitude and phase spectra of apparent resistivities be transformed into a geologically useful distribution of subsurface resistivities. In many areas where MT is being applied today, the technique may not provide the information needed because stations are too few and widely spaced, or because we are unable to interpret data influenced by complex 3-D resistivity features. The results of two surveys, one detailed, the other regional, over the Klamath Basin, Oregon, are examined. The detailed survey is able to resolve small (1 km wide) structural features that are missed or add a component of spatial aliasing to the regional data. On the other hand, the regional survey avoids truncation effects that may occur when the survey undersamples an area.

Clarke, J.; Goldstein, N.E.

1980-06-01T23:59:59.000Z

266

splitt(1)-99.PDF  

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

Detection of SIRS Solar Tracking Problems with Detection of SIRS Solar Tracking Problems with Automated Algorithms M. E. Splitt University of Utah Salt Lake City, Utah C. P. Bahrmann Cooperative Institute for Mesoscale Meteorological Studies University of Oklahoma Norman, Oklahoma Introduction Algorithms for assessing Solar Infrared Station (SIRS) broadband solar radiation data quality have been developed to aid automated flagging of the SIRS data streams. Many solar tracking anomalies can be detected by the standard three component comparison technique ("direct" + "diffuse" versus "hemispheric"). This comparison, though, will not be effective during conditions when the solar tracker completely unshades the "shaded" pyranometer and points the pyrheliometer completely off of the solar

267

INTEGRAL discovery of unusually long broad-band X-ray activity from the Supergiant Fast X-ray Transient IGR J18483-0311  

E-Print Network [OSTI]

We report on a broad-band X-ray study (0.5-250 keV) of the Supergiant Fast X-ray Transient IGR J18483-0311 using archival INTEGRAL data and a new targeted XMM-Newton observation. Our INTEGRAL investigation discovered for the first time an unusually long X-ray activity (3-60 keV) which continuously lasted for at least 11 days, i.e. a significant fraction (about 60%) of the entire orbital period, and spanned orbital phases corresponding to both periastron and apastron passages. This prolongated X-ray activity is at odds with the much shorter durations marking outbursts from classical SFXTs especially above 20 keV, as such it represents a departure from their nominal behavior and it adds a further extreme characteristic to the already extreme SFXT IGR J18483-0311. Our IBIS/ISGRI high energy investigation (100-250 keV) of archival outbursts activity from the source showed that the recently reported hint of a possible hard X-ray tail is not real and it is likely due to noisy background. The new XMM-Newton targeted...

Sguera, V; Bird, A J; Bazzano, A

2015-01-01T23:59:59.000Z

268

High Speed H2O Concentration Measurements Using Absorption Spectroscopy to Monitor Exhaust Gas  

SciTech Connect (OSTI)

This paper demonstrates the potential for fast absorption spectroscopy measurements in diesel-engine exhaust to track H2O concentration transients. Wavelength-agile absorption spectroscopy is an optical technique that measures broadband absorption spectra between 10kHz and 100 MHz. From these measured spectra, gas temperature and absorber concentration can be determined. The Fourier-domain mode-locking (FDML) laser is becoming recognized as one of the most robust and reliable wavelength-agile sources available. H2O concentration measurements during combustion events at crank angle resolved speeds are beneficial for a wide variety of applications, such as product improvements for industry, control and reliability checks for experimental researchers, and measures of fit for numerical simulations. The difficulties associated with measuring diesel exhaust compared to in-cylinder measurements are discussed. A full description of the experimental configuration and data processing is explained. Measurements of engine exhaust H2O transients with 10- s temporal resolution are presented for a range of engine conditions.

Kranendonk, Laura [ORNL; Parks, II, James E [ORNL; Prikhodko, Vitaly Y [ORNL; Partridge Jr, William P [ORNL

2008-01-01T23:59:59.000Z

269

DEFINING THE 'BLIND SPOT' OF HINODE EIS AND XRT TEMPERATURE MEASUREMENTS  

SciTech Connect (OSTI)

Observing high-temperature, low emission measure plasma is key to unlocking the coronal heating problem. With current instrumentation, a combination of EUV spectral data from Hinode Extreme-ultraviolet Imaging Spectrometer (EIS; sensitive to temperatures up to 4 MK) and broadband filter data from Hinode X-ray Telescope (XRT; sensitive to higher temperatures) is typically used to diagnose the temperature structure of the observed plasma. In this Letter, we demonstrate that a 'blind spot' exists in temperature-emission measure space for combined Hinode EIS and XRT observations. For a typical active region core with significant emission at 3-4 MK, Hinode EIS and XRT are insensitive to plasma with temperatures greater than {approx}6 MK and emission measures less than {approx}10{sup 27} cm{sup -5}. We then demonstrate that the temperature and emission measure limits of this blind spot depend upon the temperature distribution of the plasma along the line of sight by considering a hypothetical emission measure distribution sharply peaked at 1 MK. For this emission measure distribution, we find that EIS and XRT are insensitive to plasma with emission measures less than {approx}10{sup 26} cm{sup -5}. We suggest that a spatially and spectrally resolved 6-24 Angstrom-Sign spectrum would improve the sensitivity to these high-temperature, low emission measure plasma.

Winebarger, Amy R.; Cirtain, Jonathan; Mulu-Moore, Fana [NASA Marshall Space Flight Center, VP 62, Huntsville, AL 35812 (United States); Warren, Harry P. [Space Science Division, Naval Research Laboratory, Washington, DC 20375 (United States); Schmelz, Joan T. [Physics Department, University of Memphis, Memphis, TN 38152 (United States); Golub, Leon [Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA 02138 (United States); Kobayashi, Ken, E-mail: amy.r.winebarger@nasa.gov [Center for Space Plasma and Aeronomic Research, 320 Sparkman Dr, Huntsville, AL 35805 (United States)

2012-02-20T23:59:59.000Z

270

SOFTWARE RELATEDSOFTWARE-RELATED MEASUREMENT:MEASUREMENT  

E-Print Network [OSTI]

SOFTWARE RELATEDSOFTWARE-RELATED MEASUREMENT:MEASUREMENT: RISKS AND OPPORTUNITIES CEM KANER, J and lazy? Most managers who I know have tried at least oney g measurement program--and abandoned them: · Measurement theory and how it applies to software development metrics (which, at their core, are typically

271

Upper Limit on a Stochastic Background of Gravitational Waves from Seismic Measurements in the Range 0.05 Hz to 1 Hz  

E-Print Network [OSTI]

In this paper, we present an upper limit of $\\Omega_{\\rm GW}<1.2\\times 10^{8}$ on an isotropic stochastic gravitational-wave (GW) background integrated over a year in the frequency range 0.05 Hz - 1 Hz, which improves current upper limits from high-precision laboratory experiments by about 9 orders of magnitude. The limit is obtained using the response of Earth itself to GWs via a free-surface effect described more than 40 years ago by F.J. Dyson. The response was measured by a global network of broadband seismometers selected to maximize the sensitivity.

Michael Coughlin; Jan Harms

2014-01-13T23:59:59.000Z

272

Vibration Measurement and Monitoring  

Science Journals Connector (OSTI)

Successful vibration measurement and analysis require an intimate familiarity with types of measurement, transducer characteristics and application, plus the...

V. Schlegel

1984-01-01T23:59:59.000Z

273

Heterodyne vibration measurement  

Science Journals Connector (OSTI)

Analytic expressions are derived for the vibration amplitude and frequency in a heterodyne measurement method. The measurement accuracy is estimated.

A. A. Titov

1993-08-01T23:59:59.000Z

274

Assessor Training Measurement Uncertainty  

E-Print Network [OSTI]

NVLAP Assessor Training Measurement Uncertainty #12;Assessor Training 2009: Measurement Uncertainty Training 2009: Measurement Uncertainty 3 Measurement Uncertainty ·Calibration and testing labs performing Training 2009: Measurement Uncertainty 4 Measurement Uncertainty ·When the nature of the test precludes

275

Measurements of acoustic EinsteinĖHopf drag on objects undergoing volume oscillations  

Science Journals Connector (OSTI)

It has been shown theoretically that the drag on an object undergoing volume oscillations can be modified by the presence of isotropic homogeneous broadband acoustic noise when the band overlaps the objects resonance width [Larraza and Tucholski Phys. Rev. Lett. 84 2378Ė2380 (2000)]. These results constitute an acoustic analog to the EinsteinĖHopf drag on an oscillating dipole in the presence of electromagnetic fluctuations. However an important difference is that band?limited acoustic noise can reduce the drag when the lower frequency of the spectrum coincides with the resonant frequency of the object. Experimental results of the drag measured on bubbles and aerogel spheres moving in an band?limited noise field are reported.

2001-01-01T23:59:59.000Z

276

Introduction Dynamic Risk Measures  

E-Print Network [OSTI]

Introduction Dynamic Risk Measures Dynamic Risk Measures from BMO martingales Bid-Ask Dynamic Pricing Procedure Conclusion MESURES DE RISQUE DYNAMIQUES DYNAMIC RISK MEASURES Jocelyne Bion-Nadal CNRS Risk Measures Dynamic Risk Measures from BMO martingales Bid-Ask Dynamic Pricing Procedure Conclusion

Bion-Nadal, Jocelyne

277

Measuring Verification Coverage  

Science Journals Connector (OSTI)

In order to measure verification progress, we measure verification converage because verification coverage defines the extent of the verification problem. In order to measure anything however, we need metrics....

2008-01-01T23:59:59.000Z

278

Ground Vibration Measurement  

Science Journals Connector (OSTI)

Measurement of ground vibration is important for checking of amplitudes of ... confirmation of efficiency of control measures of ground vibration. The properties of measuring instruments used can affect the resul...

Dr. Milutin Srbulov

2010-01-01T23:59:59.000Z

279

Microsoft Word - Haeffelin-MP.doc  

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

Improved Measurements of the Diffuse and Global Solar Improved Measurements of the Diffuse and Global Solar Irradiances at the Surface of the Earth M. P. Haeffelin and B. C. Dominguez Virginia Polytechnic Institute and State University Blacksburg, Virginia K. Rutledge Analytical Services and Materials Hampton, Virginia S. Kato Hampton University Hampton, Virginia Introduction In recent years, studies have shown significant discrepancies between irradiances measured by pyranometers and those computed using atmospheric radiative transfer models (Kato et al. 1997 and Kato et al. 1999). Questions have been raised about the uncertainty in pyranometer measurements because observed diffuse irradiances sometimes are below pure molecular atmosphere values and because the instruments often produce non-zero signals at nights ranging between -5 and -10 W/m

280

Evaluating Solar Resource Data Obtained from Multiple Radiometers Deployed at the National Renewable Energy Laboratory: Preprint  

SciTech Connect (OSTI)

Solar radiation resource measurements from radiometers are used to predict and evaluate the performance of photovoltaic and concentrating solar power systems, validate satellite-based models for estimating solar resources, and advance research in solar forecasting and climate change. This study analyzes the performance of various commercially available radiometers used for measuring global horizontal irradiances (GHI) and direct normal irradiances (DNI). These include pyranometers, pyrheliometers, rotating shadowband irradiometers, and a pyranometer with a shading ring deployed at the National Renewable Energy Laboratory's Solar Radiation Research Laboratory (SRRL). The radiometers in this study were deployed for one year (from April 1, 2011, through March 31, 2012) and compared to measurements from radiometers with the lowest values of estimated measurement uncertainties for producing reference GHI and DNI.

Habte, A.; Sengupta, M.; Andreas, A.; Wilcox, S.; Stoffel, T.

2014-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "broadband pyranometer measurements" 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

Broadband Confocal and Multiphoton Microscope  

E-Print Network [OSTI]

biology, neurosciences, medical research. Today, it is a major challenge to penetrate deeper into samples with pulsed infrared lasers. Thanks to reduced absorption and scattering of the excitation light, two, Medical Faculty, University Heidelberg, Germany Top right: plathyneris spec. Courtesy of Dr. Leonid Nezlin

Adams, Mark

282

Broadband Ground-Plane Cloak  

Science Journals Connector (OSTI)

...automated design process. The ground-plane...Maxwell's equations implies that...number of simulations of the metamaterial...cloak-design process and makes...Jacobian matrix {lambda...Jacobian matrix). In our...retrieval process, modified...numerical simulation. A regression...a single Matlab program...Adobe Acrobat PDF format...

R. Liu; C. Ji; J. J. Mock; J. Y. Chin; T. J. Cui; D. R. Smith

2009-01-16T23:59:59.000Z

283

A Highly Linear Broadband LNA  

E-Print Network [OSTI]

results including PVT variation and the Monte Carlo simulation are presented. We obtained -10dB S11, 9.77dB S21, and 4.63dB Noise Figure with IIP3 of 19.18dBm for the designed LNA....

Park, Joung Won

2010-10-12T23:59:59.000Z

284

CISCO MULTISERVICE BROADBAND CABLE GUIDE  

E-Print Network [OSTI]

..............................................................................................................2-19 Optica

Westall, James M.

285

Broadband Seismic Station Installation Guidelines  

Science Journals Connector (OSTI)

...serviced, the top of the foam box is cut on a bevel...convection of air through the foam insulating box, and it...not apply stress to the cable and thus induce noise...seismometer with a 4 inch thick foam box will result in a thermal...dissipation, it can be heavily insulated without an excessive rise...

Robert A. Uhrhammer; William Karavas; Barbara Romanowicz

286

Measuring Energy Achievements  

Broader source: Energy.gov [DOE]

This presentation covers types of energy measurements essential to industrial facilities and discusses the benefits of metrics. ArcelorMittal provides examples from their experience measuring energy achievements.

287

X:\ARM_19~1\P283-315.WPD  

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

10 10 W m 2 ¬Ī5% ¬Ī20 W m 2 . 5 10Wm 2 Session Papers 301 Aspects of the Quality of Data from the Southern Great Plains (SGP) Cloud and Radiation Testbed (CART) Site Broadband Radiation Sensors M. E. Splitt University of Oklahoma Norman, Oklahoma M. L. Wesely Argonne National Laboratory Argonne, Illinois A systematic evaluation of the performance of broadband In this paper, suggested uncertainty values correspond to radiometers at the Southern Great Plains (SGP) Cloud and Radiation Testbed (CART) site is needed to estimate the uncertainties of the irradiance observations. Here, net radiation observed with the net radiometer in the energy balance Bowen ratio (EBBR) station at the central facility is compared with the net radiation computed as the sum of component irradiances recorded by nearby pyranometers

288

Simultaneous Spectral Albedo Measurements Near the Atmospheric Radiation Measurement Southern Great Plains (ARM SGP) Central Facility  

SciTech Connect (OSTI)

In this study, a data analysis is performed to determine the area-averaged, spectral albedo at ARM's SGP central facility site. The spectral albedo is then fed into radiation transfer models to show that the diffuse discrepancy is diminished when the spectral albedo is used (as opposed to using the broadband albedo).

Michalsky, Joseph J.; Min, Qilong; Barnard, James C.; Marchand, Roger T.; Pilewskie, Peter

2003-04-30T23:59:59.000Z

289

Measuring Energy Sustainability  

E-Print Network [OSTI]

20 Measuring Energy Sustainability David L. Greene Abstract For the purpose of measurement, energy here is only meaningful when placed in a broader context. Still, measuring energy sustainability in relation to measures of ultimate resources, and because conflicts between fossil energy use

290

Electromagnetic Measurements at RHIC  

E-Print Network [OSTI]

Electromagnetic Measurements at RHIC Hideki Hamagaki Center for Nuclear Study Graduate School of Science the University of Tokyo #12;2006/06/29 "Electromagnetic measurements at RHIC"@ATHIC 2006 Hideki;2006/06/29 "Electromagnetic measurements at RHIC"@ATHIC 2006 Hideki Hamagaki 3 Prologue ­ scope of EM measurements · EM

Hamagaki, Hideki

291

NREL: Measurements and Characterization - About Measurements and  

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

About Measurements and Characterization About Measurements and Characterization Graphic of three intersecting circles depicting the M&C modes of support, collaborative R&D, and technique development. The modes of operation for the M&C group at NREL integrates support, collaborative R&D, and technique development. The Measurements and Characterization (M&C) division at the National Renewable Energy Laboratory and the National Center for Photovoltaics provides characterization support, collaborative research, and the development of new measurement techniques for the advancement of the photovoltaic (PV) generation of energy. The M&C group uses experienced researchers and state-of-the-art capabilities to solve problems in all phases of material and device development. Throughout this site you will

292

dutton-99.PDF  

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

Thermal Offset Errors in Solar Diffuse Measurements with Thermal Offset Errors in Solar Diffuse Measurements with Some Commercial Pyranometers E. G. Dutton National Oceanic and Atmospheric Administration Climate Monitoring and Diagnostics Laboratory Boulder, Colorado T. L. Stoffel National Renewable Energy Laboratory Golden, Colorado J. J. Michalsky State University of New York Albany, New York Introduction Fundamental heat budget analysis of the thermal detector system used in many commercial pyranometers reveals a zero offset error term accounting for the infrared (IR) exchange between the protective dome-filter and the detector (Gulbrandsen 1978; Wardle and Barton 1988). This term exists for thermal radiometer detectors if the entire detector is black at solar and IR wavelengths and if the detector has any fore-optics. This error is especially problematic for clear-sky diffuse irradiance

293

ARM - Measurement - Lightning stroke  

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

govMeasurementsLightning stroke ARM Data Discovery Browse Data Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Measurement :...

294

Examples of vibration measurements  

Science Journals Connector (OSTI)

A detailed treatment of the vibration measurement techniques, applied in various fields of engineering ... only some of the most widely used modern measurement methods will be briefly presented, as well...

Gheorghe Buzdugan; Elena Mih?ilescu; Mircea Rade?

1986-01-01T23:59:59.000Z

295

ARM - Measurement - Cloud size  

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

to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Cloud size Information about the physical dimensions of a cloud, including such measurements...

296

Validating Energy Measures  

E-Print Network [OSTI]

Energy measurements play a very important role in a detailed energy analysis. The role is more important in industrial processes where wide variations of process conditions exist. Valid energy measurements make the decision making process easier...

Chari, S.; Thomas, D.

297

Quantum Operations and Measurement  

E-Print Network [OSTI]

to perform a projective von Neumann measurement. This is also called the Stinespring dilation form of E. 6

Seevinck, Michiel

298

ARM - CLASIC Measurement Platforms  

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

provide spaceborne measurements, including surface albedo, surface fluxes, soil moisture remote sensing (Polarimetric Scanning Radiometer), vegetation indices and derived...

299

Quadrupole magnets measurement  

SciTech Connect (OSTI)

A rotating coil setup is designed for quadrupole magnet measurement at the Accelerator Test Facility (ATF); Hall probe measurement was also performed for one of each type of quadrupole magnet. Both mechanical and magnetic properties of the quadrupole magnets were measured, the results are reported here. 5 refs., 12 figs., 12 tabs.

Wang, Xijie (California Univ., Los Angeles, CA (USA). Center for Advanced Accelerators Physics); Sylvester, C. (Brookhaven National Lab., Upton, NY (USA))

1991-01-01T23:59:59.000Z

300

Internet Performance Measurement Collaborators  

E-Print Network [OSTI]

Internet Performance Measurement Collaborators Cross Industry Working Team (XIWT) High Performance of the timestamp mechanism in the ANS Surveyor Probe device FY98 · GITS Internet Performance Measurement Toolkit developed FY99 · GITS measurement systems deployed in the field FY00 Goal To advance the state of the art

Note: This page contains sample records for the topic "broadband pyranometer measurements" 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

Similarity measurement in context  

Science Journals Connector (OSTI)

Context plays a crucial role when measuring the similarity of two concepts. Nonetheless, the modelling of context has been mostly neglected in existing similarity measurement theories. In this paper, we explore the influence of context in existing similarity ... Keywords: context, geospatial concepts, similarity measurement

Carsten KeŖler

2007-08-01T23:59:59.000Z

302

Electromagnetic Measurements at RHIC  

E-Print Network [OSTI]

Electromagnetic Measurements at RHIC Hideki Hamagaki Center for Nuclear Study University of Tokyo #12;2/10/2005 "Electromagnetic measurements at RHIC"@ICPAQGP 05 Hideki Hamagaki 2 Prologue · EM probe and where they are produced; #12;2/10/2005 "Electromagnetic measurements at RHIC"@ICPAQGP 05 Hideki Hamagaki

Hamagaki, Hideki

303

Request for Information (RFI) from the Department of Energy for Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy  

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

NBP RFI: Data Access NBP RFI: Data Access Honeywell Responses To Request for Information (RFI) from the Department of Energy on Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy 1. Who owns energy consumption data? The utility needs access to "raw" billing data, i.e., meter readings that take place every time the price changes and allow the utility to calculate the consumption during a particular time period and rate the consumption according to the price in effect during that period. Based on the FIPP principle of data minimization, it is expected that these meter readings would occur just a few times per day (e.g., every time a new price period begins

304

NREL: Measurements and Characterization - Device Performance Measurement  

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

Device Performance Measurement Device Performance Measurement The National Renewable Energy Laboratory is the premier U.S. Department of Energy (DOE) research laboratory for testing performance of commercial, developmental, and research photovoltaic (PV) devices. Our Device Performance group is one of only two laboratories in the world to hold an International Organization for Standardization (ISO) 17025 accreditation for primary reference cell and secondary module calibration, in addition to accreditation for secondary reference cell calibration under American Society for Testing Materials (ASTM), and International Electrotechnical Commission (IEC) standards. One of only four laboratories in the world certified in accordance with the IEC standard for calibrating terrestrial primary reference PV cells, we

305

Validation of Current Moderate Resolution Imaging Spectroradiometer (MODIS) Daily Snow Albedo Product and Spatial Analysis Based on Multiple Sensors  

E-Print Network [OSTI]

. This provided important information on whether or not the retrieved MODIS albedos are of sufficient accuracy to be useful to the wider scientific community. Two types of pyranometers (i.e. photodiodes and thermopiles) were used to measure snow albedo... in the field. Inexpensive photodiodes only cover a limited spectral region (typically 300-1000 nm) but are robust under field conditions. Thermopiles cover broader wavelength regions than photodiodes, but are both more expensive and more 24 fragile...

Zhao, Panshu

2012-07-16T23:59:59.000Z

306

ARM - Measurement - Soil moisture  

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

moisture moisture ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Soil moisture The moisture of the soil measured near the surface. This includes soil wetness and soil water potential. Categories Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AMC : Ameriflux Measurement Component CO2FLX : Carbon Dioxide Flux Measurement Systems SOIL : Soil Measurement from the SGP SWATS : Soil Water and Temperature System SEBS : Surface Energy Balance System

307

ARM - Measurement - Horizontal wind  

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

govMeasurementsHorizontal wind govMeasurementsHorizontal wind ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Horizontal wind The horizontal wind in terms of either speed and direction, or the zonal (u) and meridional (v) components. Categories Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments SONDE : Balloon-Borne Sounding System CO2FLX : Carbon Dioxide Flux Measurement Systems ECOR : Eddy Correlation Flux Measurement System DISDROMETER : Impact Disdrometer

308

ARM - Measurement - Vertical velocity  

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

govMeasurementsVertical velocity govMeasurementsVertical velocity ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Vertical velocity The component of the velocity vector, along the local vertical. Categories Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments CO2FLX : Carbon Dioxide Flux Measurement Systems ECOR : Eddy Correlation Flux Measurement System KAZR : Ka ARM Zenith Radar MMCR : Millimeter Wavelength Cloud Radar SODAR : Mini Sound Detection and Ranging

309

Measurement of bunch length in Indus-1 storage ring using fast photodiode  

SciTech Connect (OSTI)

The length of electron bunches in a storage ring is an important parameter for both synchrotron radiation users and accelerator physicists. Several methods are used for measurements of bunch length using electronic and optical instruments. We have measured temporal profile of synchrotron radiation emitted from dipole magnet of Indus-1 by using fast photodiode. Bunch length is calculated by assuming gaussian profile for the particles inside bunch. The results show that bunch length is increasing with the decrease of gap voltage of RF cavity. These measurements were carried out at low beam current; at high voltage results are in close agreement with theory and the values estimated using ZAP code. In the second experiment, the results show that bunch length increases with the increase of beam current inside the bunch, and above threshold current, it follows Chao-Gareyte scaling law. The longitudinal broadband impedance for Indus-1 SRS was estimated using Keil-Schnell criterion and results were compared with theoretical estimated values using ZAP code.

Garg, Akash Deep; Nathwani, R. K.; Holikatti, A. C.; Kumar Karnewar, Akhilesh; Tyagi, Y.; Yadav, S.; Puntambekar, T. A.; Navathe, C. P. [Beam Diagnostics Section, Raja Ramanna Centre for Advanced Technology, Indore 452013 (India)

2012-11-15T23:59:59.000Z

310

Density fluctuation measurements by far-forward collective scattering in the MST reversed-field pinch  

SciTech Connect (OSTI)

The multichannel polarimeter-interferometer system on the MST reversed-field pinch can be utilized to measure far-forward collective scattering from electron density fluctuations. The collective scattering system has 11 viewing chords with {approx}8 cm spacing. The source is a 432 {mu}m (694 GHz) far infrared laser and the scattered power is measured using a heterodyne detection scheme. Collective scattering provides a line-integrated measurement of fluctuations within the divergence of the probe beam covering wavenumber range: k{sub Up-Tack} < 1.3 cm{sup -1}, corresponding k{sub Up-Tack }{rho}{sub s} < 1.3 ({rho}{sub s} is the ion-sound Larmor radius), the region of primary interest for turbulent fluctuation-induced transport. The perpendicular wavenumber consists of toroidal, poloidal, and radial contributions, which vary with chord position. Coherent modes associated with tearing instabilities and neutral-beam driven fast particles are observed along with broadband turbulence at frequencies up to 500 kHz. Changes in frequency are consistent with a Doppler shift due to parallel plasma flow.

Ding, W. X.; Lin, L.; Brower, D. L. [Department of Physics and Astronomy, University of California Los Angeles, Los Angeles, California 90095 (United States); Duff, J. R.; Sarff, J. S. [Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States)

2012-10-15T23:59:59.000Z

311

Comparison of Direct and Indirect Measures of Critical Bands of the Monaural Chinchilla  

Science Journals Connector (OSTI)

Typically it is found that lower forms (rats cats and chinchillas) require a greater S/N ratio than does man in order to detect the presence of a pure?tone signal in a broad?band noise. Assuming Fletcher's formula to be an adequate means of estimating the operating bandwidth of the auditory system one could come to the conclusion that these lower forms have larger critical ratios larger critical bands and therefore poorer frequency resolving ability than does man. However the behavioral index of auditory sensitivity utilized in these experiments does not permit separation of behavioral criterion and auditory sensitivity. It seems probable that lower forms are trained to maintain a ďhighĒ criterion (low false?alarm rate) and thereby produce threshold measures of relatively high S/N ratio. Our efforts have been directed toward measuring both critical ratios and critical bands (band narrowing paradigm) utilizing both traditional threshold measures and criterion free indices of signal detection theory. Data obtained at signal frequencies of 500 Hz 1 2 and 4 kHz will be discussed in terms of (1) the relationship of critical ratios to critical bands as a function of frequency and (2) the effect of criterion contamination on the estimate of the critical ratio and therefore on the estimate of the frequency resolving power of the organism.

W. H. Seaton; C. Trahiotis

1973-01-01T23:59:59.000Z

312

ARM - Measurement - Precipitation  

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

govMeasurementsPrecipitation govMeasurementsPrecipitation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Precipitation All liquid or solid phase aqueous particles that originate in the atmosphere and fall to the earth's surface. Categories Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments CO2FLX : Carbon Dioxide Flux Measurement Systems DISDROMETER : Impact Disdrometer LDIS : Laser Disdrometer MWRHF : Microwave Radiometer - High Frequency

313

Atmospheric Radiation Measurement Program  

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

3 3 ARM 2003 Tom Ackerman Chief Scientist Tom Ackerman Chief Scientist ARM ARM Atmospheric Radiation Measurement Atmospheric Radiation Measurement WARNING! WARNING! Today is April 1 But that has NO bearing on this message Today is April 1 But that has NO bearing on this message ARM ARM Atmospheric Radiation Measurement Atmospheric Radiation Measurement Two Topics Two Topics * Status of ARM (quick overview) * Science plan - ARM in the next 5 years * Status of ARM (quick overview) * Science plan - ARM in the next 5 years ARM ARM Atmospheric Radiation Measurement Atmospheric Radiation Measurement ARM Status - Science ARM Status - Science * Steadily increasing productivity - Poster session - over 220 posters (may need to do something about submissions next year) - Peer-reviewed articles: 2.5 to 3 per year per

314

ARM - Measurement - Virtual temperature  

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

govMeasurementsVirtual temperature govMeasurementsVirtual temperature ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Virtual temperature The virtual temperature Tv = T(1 + rv/{epsilon}), where rv is the mixing ratio, and {epsilon} is the ratio of the gas constants of air and water vapor ( 0.622). Categories Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments CO2FLX : Carbon Dioxide Flux Measurement Systems MWRP : Microwave Radiometer Profiler RWP : Radar Wind Profiler

315

ENVIRONMENTAL MEASUREMENTS OF RADIOXENON  

SciTech Connect (OSTI)

Radioactive xenon (radioxenon) is produced by the fissioning of nuclear material, either via neutron-induced or spontaneous fission, and also via neutron activation of xenon gas and other reactions. The most abundant xenon isotopes in the atmosphere are 131mXe, 133Xe and 135Xe, having been measured at several locations in the northern hemisphere associated with reactor operation, medical isotope production, and more recently associated with the spontaneous fission of 240Pu from the legacy materials at plutonium production facility in Hanford, Washington. Radioactive xenon measurement at levels near the average atmospheric level (1-10 mBq/m3) is a ďspecialtyĒ measurement, requiring specialized collection, separation, and nuclear measurement techniques. This paper describes the political and scientific drivers for making radioxenon measurements, background sources, and current techniques for these measurements.

Bowyer, Ted W.; Hayes, James C.; McIntyre, Justin I.

2007-12-30T23:59:59.000Z

316

Extremal generalized quantum measurements  

E-Print Network [OSTI]

A measurement on a section K of the set of states of a finite dimensional C*-algebra is defined as an affine map from K to a probability simplex. Special cases of such sections are used in description of quantum networks, in particular quantum channels. Measurements on a section correspond to equivalence classes of so-called generalized POVMs, which are called quantum testers in the case of networks. We find extremality conditions for measurements on K and characterize generalized POVMs such that the corresponding measurement is extremal. These results are applied to the set of channels. We find explicit extremality conditions for two outcome measurements on qubit channels and give an example of an extremal qubit 1-tester such that the corresponding measurement is not extremal.

Anna Jencova

2012-07-23T23:59:59.000Z

317

Viscosity Measurements with Glass  

Science Journals Connector (OSTI)

1 May 1925 research-article Viscosity Measurements with Glass Vaughan H. Stott Edith Irvine D. Turner The Royal Society is collaborating with JSTOR to digitize, preserve...

1925-01-01T23:59:59.000Z

318

Guidelines for Performance Measurement  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

Federal agencies, states, businesses, and foreign governments are increasingly relying on performance measurement information to help chart progress in increasingly frugal times. No cancellations.

1996-06-30T23:59:59.000Z

319

Insulation Resistance Measurement Methods  

Science Journals Connector (OSTI)

A traditional method of insulation resistance measurement in live DC networks is ... of an ammeter is described. Formulas for insulation equivalent resistance calculation are derived with help...

Piotr Olszowiec

2013-01-01T23:59:59.000Z

320

Measuring Schwarzschild Coordinates  

Science Journals Connector (OSTI)

... to determine, from their measurements at different constant positions relative to that frame, the Schwarzschild mass and the radius of the underlying star. As Banerji says, "a high ...

1972-10-27T23:59:59.000Z

Note: This page contains sample records for the topic "broadband pyranometer measurements" 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

Measuring axial pump thrust  

DOE Patents [OSTI]

An apparatus for measuring the hydraulic axial thrust of a pump under operation conditions is disclosed. The axial thrust is determined by forcing the rotating impeller off of an associated thrust bearing by use of an elongate rod extending coaxially with the pump shaft. The elongate rod contacts an impeller retainer bolt where a bearing is provided. Suitable measuring devices measure when the rod moves to force the impeller off of the associated thrust bearing and the axial force exerted on the rod at that time. The elongate rod is preferably provided in a housing with a heat dissipation mechanism whereby the hot fluid does not affect the measuring devices. 1 fig.

Suchoza, B.P.; Becse, I.

1988-11-08T23:59:59.000Z

322

Aerial Measuring System  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

To establish policy for the Department of Energy's (DOE) Aerial Measuring System (AMS) Program. This directive does not cancel another directive. Canceled by DOE O 153.1.

1991-09-20T23:59:59.000Z

323

Digital Measures screen changes 1 Digital Measures screen changes 2  

E-Print Network [OSTI]

Digital Measures screen changes 1 #12; Digital Measures screen changes 2 #12; Digital Measures screen changes 3 #12; Digital Measures screen changes 4 #12; Digital Measures screen changes 5 #12; Digital Measures screen changes 6 #12; Digital Measures screen changes 7 #12

Barrash, Warren

324

Planetary heat flow measurements  

Science Journals Connector (OSTI)

...ESA's Rosetta mission towards comet Churyumov-Gerasimenko. It...Heat flow measurements on comets have a different motivation...penetrator is by no means limited to comets; it has also been tested in...measurement. Currently, a landing on Mercury within the framework...

2005-01-01T23:59:59.000Z

325

Problems of Quantum Measurement  

E-Print Network [OSTI]

We derive the probabilities of measurement results from Schroedinger's equation plus a definition of macroscopic as a particular kind of thermodynamic limit. Bohr's insight that a measurement apparatus must be classical in nature and classically describable is made precise in a mathematical sense analogous to the procedures of classical statistical mechanics and the study of Hamiltonian heat baths.

Joseph F. Johnson

2007-10-02T23:59:59.000Z

326

ARM - Measurement - Hygroscopic growth  

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

govMeasurementsHygroscopic growth govMeasurementsHygroscopic growth ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Hygroscopic growth The rate that aerosol particles grow at relative humidity values less than 100 percent. Categories Aerosols Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AOS : Aerosol Observing System SMPS : Scanning mobility particle sizer TDMA : Tandem Differential Mobility Analyzer Field Campaign Instruments AOS : Aerosol Observing System

327

ARM - Measurement - Isotope ratio  

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

govMeasurementsIsotope ratio govMeasurementsIsotope ratio ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Isotope ratio Ratio of stable isotope concentrations. Categories Atmospheric Carbon, Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments FLASK : Flask Samplers for Carbon Cycle Gases and Isotopes Field Campaign Instruments FLASK : Flask Samplers for Carbon Cycle Gases and Isotopes Datastreams FLASK : Flask Samplers for Carbon Cycle Gases and Isotopes

328

ARM - Measurement - Advective tendency  

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

govMeasurementsAdvective tendency govMeasurementsAdvective tendency ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Advective tendency The large-scale advective tendency of temperature and moisture used to force SCMs and CSRMs, derived from constrained variational analysis. Categories Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. External Instruments ECMWFDIAG : European Centre for Medium Range Weather Forecasts Diagnostic Analyses ECMWF : European Centre for Medium Range Weather Forecasts Model

329

ARM - Measurement - Backscattered radiation  

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

govMeasurementsBackscattered radiation govMeasurementsBackscattered radiation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Backscattered radiation The scattering of radiant energy into the hemisphere of space bounded by a plane normal to the direction of the incident radiation and lying on the same side as the incident ray. Categories Aerosols, Cloud Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AOS : Aerosol Observing System IAP : In-situ Aerosol Profiles (Cessna Aerosol Flights)

330

ARM - Measurement - Atmospheric turbulence  

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

turbulence turbulence ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Atmospheric turbulence High frequency velocity fluctuations that lead to turbulent transport of momentum, heat, mositure, and passive scalars, and often expressed in terms of variances and covariances. Categories Atmospheric State, Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments CO2FLX : Carbon Dioxide Flux Measurement Systems ECOR : Eddy Correlation Flux Measurement System

331

ARM - Measurement - Atmospheric pressure  

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

pressure pressure ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Atmospheric pressure The pressure exerted by the atmosphere as a consequence of gravitational attraction exerted upon the "column" of air lying directly above the point in question. Categories Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments SONDE : Balloon-Borne Sounding System CO2FLX : Carbon Dioxide Flux Measurement Systems ECOR : Eddy Correlation Flux Measurement System

332

ARM - Measurement - Atmospheric temperature  

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

temperature temperature ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Atmospheric temperature The temperature indicated by a thermometer exposed to the air in a place sheltered from direct solar radiation. Categories Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AERI : Atmospheric Emitted Radiance Interferometer SONDE : Balloon-Borne Sounding System CO2FLX : Carbon Dioxide Flux Measurement Systems ECOR : Eddy Correlation Flux Measurement System

333

ARM - Measurement - Hydrometeor size  

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

size size ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Hydrometeor size The size of a hydrometeor, measured directly or derived from other measurements . Categories Cloud Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments DISDROMETER : Impact Disdrometer LDIS : Laser Disdrometer External Instruments CPOL : C-Band Polarimetric Radar Field Campaign Instruments EC-CONVAIR580-BULK : Environment Canada Convair 580 Bulk Parameters

334

Extremal covariant measurements  

SciTech Connect (OSTI)

We characterize the extremal points of the convex set of quantum measurements that are covariant under a finite-dimensional projective representation of a compact group, with action of the group on the measurement probability space which is generally nontransitive. In this case the POVM density is made of multiple orbits of positive operators, and, in the case of extremal measurements, we provide a bound for the number of orbits and for the rank of POVM elements. Two relevant applications are considered, concerning state discrimination with mutually unbiased bases and the maximization of the mutual information.

Chiribella, Giulio; Mauro D'Ariano, Giacomo [Istituto Nazionale di Fisica della Materia, Unita di Pavia, Dipartimento di Fisica 'A. Volta', via Bassi 6, I-27100 Pavia (Italy) and Department of Electrical and Computer Engineering, Northwestern University, Evanston, Illinois 60208 (United States)

2006-09-15T23:59:59.000Z

335

Extremal covariant measurements  

E-Print Network [OSTI]

We characterize the extremal points of the convex set of quantum measurements that are covariant under a finite-dimensional projective representation of a compact group, with action of the group on the measurement probability space which is generally non-transitive. In this case the POVM density is made of multiple orbits of positive operators, and, in the case of extremal measurements, we provide a bound for the number of orbits and for the rank of POVM elements. Two relevant applications are considered, concerning state discrimination with mutually unbiased bases and the maximization of the mutual information.

G. Chiribella; G. M. D'Ariano

2006-03-20T23:59:59.000Z

336

Measurement, Analysis, and Improvement  

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

6 Measurement, Analysis, and Improvement Process 11_0304 Page 1 of 6 6 Measurement, Analysis, and Improvement Process 11_0304 Page 1 of 6 EOTA - Business Process Document Title: Measurement, Analysis, and Improvement Process Document Number: P-006 Rev 11_0304 Document Owner: Elizabeth Sousa Backup Owner: Melissa Otero Approver(s): Melissa Otero Parent Document: Q-001, Quality Manual Notify of Changes: EOTA Employees Referenced Document(s): P-008 Corrective-Preventive Action Process, P-004 Business System Management Review and REG-003 Records Register P-006 Measurement, Analysis, and Improvement Process 11_0304 Page 2 of 6 Revision History: Rev. Description of Change A Initial Release 08_0416 Changed verbiage in Step 6 to, "CAR/PAR/IO using P-008, Corrective-Preventive Action & Improvement Opportunity"

337

ARM - Measurement - Atmospheric moisture  

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

moisture moisture ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Atmospheric moisture The moisture content of the air as indicated by several measurements including relative humidity, specific humidity, dewpoint, vapor pressure, water vapor mixing ratio, and water vapor density; note that precipitable water is a separate type. Categories Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AERI : Atmospheric Emitted Radiance Interferometer

338

Measurement and Evaluation  

Science Journals Connector (OSTI)

Under the guidance of the sampling theory, correct sampling procedures are taken, after which measurement can be performed with a variety of methods to determine the particle size, number, and distribution. After...

Zhonglin Xu

2014-01-01T23:59:59.000Z

339

Activity Based Performance Measurement  

E-Print Network [OSTI]

performance Potential applications · Measuring value created by new technology...or any intervention) · 2 sites recently launched (SMEs, KM) #12;RFID findings #12;© MIT Sloan School of Management 8 RFID

Brock, David

340

Performance Measurement of MEAs  

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

iii. Electrolyte membrane durability iv. Target cost of membrane v. Automotive fuel cell MEA degradation map 3 3 Measurement of MEA Performance 4 4 25cm 2 72mm 72mm 50mm...

Note: This page contains sample records for the topic "broadband pyranometer measurements" 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

Electron Heat Transport Measured  

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

Heat Transport Measured in a Stochastic Magnetic Field T. M. Biewer, * C. B. Forest, J. K. Anderson, G. Fiksel, B. Hudson, S. C. Prager, J. S. Sarff, and J. C. Wright...

342

Measuring Strong Nanostructures  

ScienceCinema (OSTI)

Andy Minor of Berkeley Lab's National Center for Electron Microscopy explains measuring stress and strain on nanostructures with the In Situ Microscope. More information: http://newscenter.lbl.gov/press-relea...

Andy Minor

2010-01-08T23:59:59.000Z

343

ARM - Measurement - Cloud fraction  

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

to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Cloud fraction Fraction of sky covered by clouds, observed directly or derived from SW...

344

Cross-Section Measurement  

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

Cross-Section Measurement of 2 H(n,np)n at 16 MeV in Symmetric Constant Relative Energy Configurations Alexander Hoff Couture A dissertation submitted to the faculty of the...

345

In situ measurement system  

DOE Patents [OSTI]

A multipurpose in situ underground measurement system comprising a plurality of long electrical resistance elements in the form of rigid reinforcing bars, each having an open loop hairpin configuration of shorter length than the other resistance elements. The resistance elements are arranged in pairs in a unitized structure, and grouted in place in the underground volume. Measurement means are provided for obtaining for each pair the electrical resistance of each element and the difference in electrical resistance of the paired elements, which difference values may be used in analytical methods involving resistance as a function of temperature. A scanner means sequentially connects the resistance-measuring apparatus to each individual pair of elements. A source of heating current is also selectively connectable for heating the elements to an initial predetermined temperature prior to electrical resistance measurements when used as an anemometer.

Lord, D.E.

1980-11-24T23:59:59.000Z

346

ARM - Measurement - Aerosol concentration  

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

concentration concentration ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Aerosol concentration A measure of the amount of aerosol particles (e.g. number, mass, volume) per unit volume of air. Categories Aerosols Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AOS : Aerosol Observing System CSPHOT : Cimel Sunphotometer CPC : Condensation Particle Counter IAP : In-situ Aerosol Profiles (Cessna Aerosol Flights) TDMA : Tandem Differential Mobility Analyzer

347

Measuring Neutrino Interactions  

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

Measuring Neutrino Interactions with MiniBooNE R. Tayloe for the MiniBooNE collaboration Physics Department, Indiana University Bloomington, IN 47405, USA Abstract. The MiniBooNE...

348

Orifice flow measurement uncertainty  

SciTech Connect (OSTI)

A computer program is now available from Union Carbide that evaluates the total flow uncertainty of orifice flowmeter systems. Tolerance values for every component in the system and the sensitivity of the measured flowrate to each component can be established using historical data and published hardware specifications. Knowing the tolerance and sensitivity values, a total measurement uncertainty can be estimated with a 95% confidence level. This computer program provides a powerful design tool to ensure correct component matching and total metering system optimization.

Samples, C.R.

1984-04-01T23:59:59.000Z

349

Pulse flux measuring device  

DOE Patents [OSTI]

A device for measuring particle flux comprises first and second photodiode detectors for receiving flux from a source and first and second outputs for producing first and second signals representing the flux incident to the detectors. The device is capable of reducing the first output signal by a portion of the second output signal, thereby enhancing the accuracy of the device. Devices in accordance with the invention may measure distinct components of flux from a single source or fluxes from several sources.

Riggan, William C. (Albuquerque, NM)

1985-01-01T23:59:59.000Z

350

Tevatron admittance measurement  

SciTech Connect (OSTI)

We measured the Tevatron beam admittance by the means of exciting the beam with noise and causing emittance growth. The noise power was about 3W with a bandwidth of 100Hz and centered either in the horizontal betatron frequency or vertical betatron frequency. We were able to controllably blow the beam emittance up quickly. From the point where the beam emittance stopped growing, we measured the beam acceptance of the Tevatron.

Zhang, X.L.; Shiltsev, V.; Tan, C.Y.; /Fermilab

2005-05-01T23:59:59.000Z

351

Ultrasonic differential measurement  

DOE Patents [OSTI]

A method and apparatus for ultrasonic resonance testing of an object is shown and described. Acoustic vibrations are applied to an object at a plurality of frequencies. Measurements of the object's vibrational response are made simultaneously at different locations on said object. The input frequency is stepped by using small frequency changes over a predetermined range. There is a pause interval or ring delay which permits the object to reach a steady state resonance before a measurement is taken.

Rhodes, George W. (Albuquerque, NM); Migliori, Albert (Santa Fe, NM)

1995-01-01T23:59:59.000Z

352

Measures on Mixing Angles  

E-Print Network [OSTI]

We address the problem of the apparently very small magnitude of CP violation in the standard model, measured by the Jarlskog invariant J. In order to make statements about probabilities for certain values of J, we seek to find a natural measure on the space of Kobayashi-Maskawa matrices, the double quotient U(1)^2\\SU(3)/U(1)^2. We review several possible, geometrically motivated choices of the measure, and compute expectation values for powers of J for these measures. We find that different choices of the measure generically make the observed magnitude of CP violation appear finely tuned. Since the quark masses and the mixing angles are determined by the same set of Yukawa couplings, we then do a second calculation in which we take the known quark mass hierarchy into account. We construct the simplest measure on the space of 3 x 3 Hermitian matrices which reproduces this known hierarchy. Calculating expectation values for powers of J in this second approach, we find that values of J close to the observed value are now rather likely, and there does not seem to be any fine tuning. Our results suggest that the choice of Kobayashi-Maskawa angles is closely linked to the observed mass hierarchy. We close by discussing the corresponding case of neutrinos.

Gary W. Gibbons; Steffen Gielen; C. N. Pope; Neil Turok

2008-10-27T23:59:59.000Z

353

''When Cost Measures Contradict''  

SciTech Connect (OSTI)

When regulators put forward new economic or regulatory policies, there is a need to compare the costs and benefits of these new policies to existing policies and other alternatives to determine which policy is most cost-effective. For command and control policies, it is quite difficult to compute costs, but for more market-based policies, economists have had a great deal of success employing general equilibrium models to assess a policy's costs. Not all cost measures, however, arrive at the same ranking. Furthermore, cost measures can produce contradictory results for a specific policy. These problems make it difficult for a policy-maker to determine the best policy. For a cost measures to be of value, one would like to be confident of two things. First one wants to be sure whether the policy is a winner or loser. Second, one wants to be confident that a measure produces the correct policy ranking. That is, one wants to have confidence in a policy measure's ability to correctly rank policies from most beneficial to most harmful. This paper analyzes empirically these two properties of different costs measures as they pertain to assessing the costs of the carbon abatement policies, especially the Kyoto Protocol, under alternative assumptions about implementation.

Montgomery, W. D.; Smith, A. E.; Biggar, S. L.; Bernstein, P. M.

2003-05-09T23:59:59.000Z

354

Light and Energy -Daylight measurements  

E-Print Network [OSTI]

Light and Energy - Daylight measurements #12;Light and Energy - Daylight measurements Authors: Jens;3 Title Light and Energy Subtitle Daylight measurements Authors Jens Christoffersen, √Āsta Logad√≥ttir ............................................................................... 7 Measurement results: Kyosemi.................................................................. 9

355

Faraday Rotation Measure Synthesis  

E-Print Network [OSTI]

We extend the rotation measure work of Burn (1966) to the cases of limited sampling of lambda squared space and non-constant emission spectra. We introduce the rotation measure transfer function (RMTF), which is an excellent predictor of n-pi ambiguity problems with the lambda squared coverage. Rotation measure synthesis can be implemented very efficiently on modern computers. Because the analysis is easily applied to wide fields, one can conduct very fast RM surveys of weak spatially extended sources. Difficult situations, for example multiple sources along the line of sight, are easily detected and transparently handled. Under certain conditions, it is even possible to recover the emission as a function of Faraday depth within a single cloud of ionized gas. Rotation measure synthesis has already been successful in discovering widespread, weak, polarized emission associated with the Perseus cluster (De Bruyn and Brentjens, 2005). In simple, high signal to noise situations it is as good as traditional linear fits to polarization angle versus lambda squared plots. However, when the situation is more complex or very weak polarized emission at high rotation measures is expected, it is the only viable option.

M. A. Brentjens; A. G. de Bruyn

2005-07-14T23:59:59.000Z

356

ARM - Measurement - Aerosol absorption  

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

absorption absorption ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Aerosol absorption The process in which radiation energy is retained by aerosols. Categories Aerosols Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AOS : Aerosol Observing System CSPHOT : Cimel Sunphotometer IAP : In-situ Aerosol Profiles (Cessna Aerosol Flights) PSAP : Particle Soot Absorption Photometer PASS : Photoacoustic Soot Spectrometer External Instruments OMI : Ozone Monitoring Instrument

357

ARM - Measurement - Hydrometeor image  

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

image image ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Hydrometeor image Images of hydrometeors from which one can derive characteristics such as size and shape. Categories Cloud Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. Field Campaign Instruments LEARJET : Lear Jet PARTIMG : Particle imager UAV-PROTEUS-MICRO : Proteus Cloud Microphysics Instruments SPEC-CPI : Stratton Park Engineering Company - Cloud particle imager UAV-PROTEUS : UAV Proteus

358

ARM - Measurement - Cloud extinction  

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

extinction extinction ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Cloud extinction The removal of radiant energy from an incident beam by the process of cloud absorption and/or scattering. Categories Cloud Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments NEPHELOMETER : Nephelometer Field Campaign Instruments CEP : Cloud Extinction Probe CLDAEROSMICRO : Cloud and Aerosol Microphysical Properties EC-CONVAIR580-BULK : Environment Canada Convair 580 Bulk Parameters

359

ARM - Measurement - Surface condition  

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

condition condition ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Surface condition State of the surface, including vegetation, land use, surface type, roughness, and such; often provided in model output. Categories Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments NAV : Navigational Location and Attitude SURFLOG : SGP Surface Conditions Observations by Site Technicians S-TABLE : Stabilized Platform MET : Surface Meteorological Instrumentation

360

ARM - Measurement - Hydrometeor phase  

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

phase phase ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Hydrometeor phase Hydrometeor phase such as liquid ice or mixed phase Categories Cloud Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. Value-Added Products VISST : Minnis Cloud Products Using Visst Algorithm (Process) VISSTPX04G08V2MINNIS : VISST-derived pixel-level products from satellite GOES8, version 2 VISSTPX04G08V3MINNIS : VISST-derived pixel-level products from satellite GOES8, version 3

Note: This page contains sample records for the topic "broadband pyranometer measurements" 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

ARM - Measurement - Radar polarization  

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

polarization polarization ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Radar polarization The temporal and geometric behavior of the electric field vector of an electromagnetic wave transmitted or received by a radar system, e.g. elliptical polarization, differential reflectivity, phase shift, co-polar correlation coefficient, linear depolarization ratio. Categories Cloud Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments CSAPR : C-Band ARM Precipitation Radar

362

Measurement of Acoustic Impedance  

Science Journals Connector (OSTI)

The acoustic impedance of a sample of material forming one boundary of a shallow cylindrical cavity can be determined by measuring the sound pressure produced when a known volume current is injected into the cavity from a high impedance source. The volume current is effectively determined by observing the pressure when the cavity is terminated rigidly. An impedance determination is thus reduced to measurement of the complex ratio of two observed voltages. By designing a ring source to suppress the first radial mode of the cavity the upper frequency limit set by uniformity of pressure distribution is extended by at least an octave. By avoiding leaks measurements can also be extended to very low frequencies. Secondary effects due to finite source impedance viscosity and heat losses at the walls have been evaluated. The method appears to be simple rapid and precise.

O. K. El?Mawardi

1948-01-01T23:59:59.000Z

363

Photon position measure  

E-Print Network [OSTI]

The positive operator valued measure (POVM) for a photon counting array detector is derived and found to equal photon flux density integrated over pixel area and measurement time. Since photon flux density equals number density multiplied by the speed of light, this justifies theoretically the observation that a photon counting array provides a coarse grained measurement of photon position. The POVM obtained here can be written as a set of projectors onto a basis of localized states, consistent with the description of photon position in a recent quantum imaging proposal [M. Tsang, Phys. Rev. Lett. \\textbf{102}, 253601 (2009)]. The wave function that describes a photon counting experiment is the projection of the photon state vector onto this localized basis. Collapse is to the electromagnetic vacuum and not to a localized state, thus violating the text book rules of quantum mechanics but compatible with the theory of generalized observables and the nonlocalizability of an incoming photon.

Margaret Hawton

2010-07-03T23:59:59.000Z

364

Photon position measure  

E-Print Network [OSTI]

The positive operator valued measure (POVM) for a photon counting array detector is derived and found to equal photon flux density integrated over pixel area and measurement time. Since photon flux density equals number density multiplied by the speed of light, this justifies theoretically the observation that a photon counting array provides a coarse grained measurement of photon position. The POVM obtained here can be written as a set of projectors onto a basis of localized states, consistent with the description of photon position in a recent quantum imaging proposal [M. Tsang, Phys. Rev. Lett. \\textbf{102}, 253601 (2009)]. The wave function that describes a photon counting experiment is the projection of the photon state vector onto this localized basis. Collapse is to the electromagnetic vacuum and not to a localized state, thus violating the text book rules of quantum mechanics but compatible with the theory of generalized observables and the nonlocalizability of an incoming photon.

Hawton, Margaret

2010-01-01T23:59:59.000Z

365

Downhole steam quality measurement  

DOE Patents [OSTI]

The present invention relates to an empirical electrical method for remote sensing of steam quality utilizing flow-through grids which allow measurement of the electrical properties of a flowing two-phase mixture. The measurement of steam quality in the oil field is important to the efficient application of steam assisted recovery of oil. Because of the increased energy content in higher quality steam it is important to maintain the highest possible steam quality at the injection sandface. The effectiveness of a steaming operation without a measure of steam quality downhole close to the point of injection would be difficult to determine. Therefore, a need exists for the remote sensing of steam quality.

Lee, D.O.; Montoya, P.C.; Muir, J.F.; Wayland, J.R. Jr.

1985-06-19T23:59:59.000Z

366

Structural power flow measurement  

SciTech Connect (OSTI)

Previous investigations of structural power flow through beam-like structures resulted in some unexplained anomalies in the calculated data. In order to develop structural power flow measurement as a viable technique for machine tool design, the causes of these anomalies needed to be found. Once found, techniques for eliminating the errors could be developed. Error sources were found in the experimental apparatus itself as well as in the instrumentation. Although flexural waves are the carriers of power in the experimental apparatus, at some frequencies longitudinal waves were excited which were picked up by the accelerometers and altered power measurements. Errors were found in the phase and gain response of the sensors and amplifiers used for measurement. A transfer function correction technique was employed to compensate for these instrumentation errors.

Falter, K.J.; Keltie, R.F.

1988-12-01T23:59:59.000Z

367

Chapter 15 - Measurement  

Science Journals Connector (OSTI)

Publisher Summary This chapter deals with the multiphase flow meter. The major parts of the TopFlow meter are the Venturi insert and the electrodes inside the Venturi throat. The flow rates of oil, water, and gas are calculated based on the measurements performed by the electrodes and the measurement of the differential pressure across the Venturi inlet. The TopFlow meter utilizes a capacitance sensor for oil-continuous liquid mixtures, where the capacitance caused by the dielectric constant of the fluid mixture is measured in the throat of the Venturi. Similarly, it utilizes a four-electrode conductance sensor for water-continuous liquid mixtures, where the conductance is caused by the conductivity of the fluid mixture. All the necessary electrodes are incorporated within a Venturi that is somewhat modified. Advanced data processing is utilized to have continuous readings of the flow rates of oil, water, and gas.

E.W. McAllister

2009-01-01T23:59:59.000Z

368

ARM - Measurement - Surface albedo  

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

albedo albedo ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Surface albedo The fraction of incoming solar radiation at a surface (i.e. land, cloud top) that is effectively reflected by that surface. Categories Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments MFR : Multifilter Radiometer External Instruments ETA : Eta Model Runs ECMWFDIAG : European Centre for Medium Range Weather Forecasts Diagnostic Analyses ECMWF : European Centre for Medium Range Weather Forecasts Model

369

Measuring Residential Ventilation  

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

Measuring Residential Ventilation Measuring Residential Ventilation System Airflows: Part 2 - Field Evaluation of Airflow Meter Devices and System Flow Verification J. Chris Stratton, Iain S. Walker, Craig P. Wray Environmental Energy Technologies Division October 2012 LBNL-5982E 2 Disclaimer This document was prepared as an account of work sponsored by the United States Government. While this document is believed to contain correct information, neither the United States Government nor any agency thereof, nor the Regents of the University of California, nor any of their employees, makes any warranty, express or implied, or assumes any legal responsibility for the accuracy, completeness, or usefulness of any

370

Top Quark Measurements  

E-Print Network [OSTI]

Ten years after its discovery at the Tevatron collider, we still know little about the top quark. Its large mass suggests it may play a key role in the mechanism of Electroweak Symmetry Breaking (EWSB), or open a window of sensitivity to new physics related to EWSB and preferentially coupled to it. To determine whether this is the case, precision measurements of top quark properties are necessary. The high statistics samples being collected by the Tevatron experiments during Run II start to incisively probe the top quark sector. This report summarizes the experimental status of the top quark, focusing in particular on the recent measurements from the Tevatron Run II.

A. Juste

2005-12-20T23:59:59.000Z

371

MTSC735, Spring 2008 Electrical measurements 1 Electrical measurements  

E-Print Network [OSTI]

position between coil windings. Circuit designed to have zero output at equilibrium. MTSC735, Spring 20081 MTSC735, Spring 2008 Electrical measurements 1 Electrical measurements Critical to all/reducing noise from measurements MTSC735, Spring 2008 Electrical measurements 2 Measurements Believe nothing

Plaisted, David A.

372

Distortion of ethyne on coordination to silver acetylide, C{sub 2}H{sub 2}???AgCCH, characterised by broadband rotational spectroscopy and ab initio calculations  

SciTech Connect (OSTI)

The rotational spectra of six isotopologues of a complex of ethyne and silver acetylide, C{sub 2}H{sub 2}???AgCCH, are measured by both chirped-pulse and Fabry-Perot cavity versions of Fourier-transform microwave spectroscopy. The complex is generated through laser ablation of a silver target in the presence of a gas sample containing 1% C{sub 2}H{sub 2}, 1% SF{sub 6}, and 98% Ar undergoing supersonic expansion. Rotational, A{sub 0}, B{sub 0}, C{sub 0}, and centrifugal distortion ?{sub J} and ?{sub JK} constants are determined for all isotopologues of C{sub 2}H{sub 2}???AgCCH studied. The geometry is planar, C{sub 2v} and T-shaped in which the C{sub 2}H{sub 2} sub-unit comprises the bar of the ďTĒ and binds to the metal atom through its ? electrons. In the r{sub 0} geometry, the distance of the Ag atom from the centre of the triple bond in C{sub 2}H{sub 2} is 2.2104(10) Ň. The r(HC?CH) parameter representing the bond distance separating the two carbon atoms and the angle, ?(CCH), each defined within the C{sub 2}H{sub 2} sub-unit, are determined to be 1.2200(24) Ň and 186.0(5)į, respectively. This distortion of the linear geometry of C{sub 2}H{sub 2} involves the hydrogen atoms moving away from the silver atom within the complex. The results thus reveal that the geometry of C{sub 2}H{sub 2} changes measurably on coordination to AgCCH. A value of 59(4) N?m{sup ?1} is determined for the intermolecular force constant, k{sub ?}, confirming that the complex is significantly more strongly bound than hydrogen and halogen-bonded analogues. Ab initio calculations of the r{sub e} geometry at the CCSD(T)(F12{sup *})/ACVTZ level of theory are consistent with the experimental results. The spectra of the {sup 107}Ag{sup 13}C{sup 13}CH and {sup 109}Ag{sup 13}C{sup 13}CH isotopologues of free silver acetylide are also measured for the first time allowing the geometry of the AgCCH monomer to be examined in greater detail than previously.

Stephens, Susanna L.; Zaleski, Daniel P.; Walker, Nicholas R., E-mail: nick.walker@newcastle.ac.uk, E-mail: a.c.legon@bristol.ac.uk [School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, Tyne and Wear NE1 7RU (United Kingdom); Mizukami, Wataru; Tew, David P.; Legon, Anthony C., E-mail: nick.walker@newcastle.ac.uk, E-mail: a.c.legon@bristol.ac.uk [School of Chemistry, University of Bristol, Bristol BS8 1TS (United Kingdom)

2014-03-28T23:59:59.000Z

373

Measuring biodiversity for conservation  

E-Print Network [OSTI]

Measuring biodiversity for conservation Summary Policy document 10/03 May 2003 ISBN 0 85403 592 3. 2002). Conserving biodiversity is essential to sustainability. Biodiversity provides substantial socio This report can be found at www.royalsoc.ac.uk #12;The reality of ongoing biodiversity loss The living world

Reynolds, John D.

374

Viscosity Measurements on Nitrogen  

Science Journals Connector (OSTI)

Viscosity Measurements on Nitrogen ... (15)?Clarke, A. G.; Smith, E. B. Low-temperature viscosities and intermolecular forces of simple gases. ... The coupling also serves as a frictionless bearing for a slender rotating cylindrical body which is slowed down due to the viscous drag of the fluid surrounding the cylinder. ...

Daniel Seibt; Eckhard Vogel; Eckard Bich; Daniel Buttig; Egon Hassel

2006-01-11T23:59:59.000Z

375

Measuring solar abundances  

SciTech Connect (OSTI)

This is the rapporteur paper of Working Group 2 on Measuring Solar Abundances. The working group presented and discussed the different observations and methods for obtaining the elemental and isotopic composition of the Sun, and critically reviewed their results and the accuracies thereof. Furthermore, a few important yet unanswered questions were identified, and the potential of future missions to provide answers was assessed.

Reisenfeld, D. B. (Daniel B.); Von Steiger, R. (Rudolf); Vial, J.-C. (Jean-Claude); Bochsler, P.; Chaussidon, M.; Cohen, C. M. S.; Fleck, B.; Heber, V. S.; Wiens, R. C. (Roger C.)

2001-01-01T23:59:59.000Z

376

Dynamic Modelling, Measurement and  

E-Print Network [OSTI]

Dynamic Modelling, Measurement and Control of Co-rotating Twin-Screw Extruders Justin Rae Elsey, B;Summary Co-rotating twin-screw extruders are unique and versatile machines that are used widely that these extruders are currently being optimally utilised. The most signi cant improvement to the eld of twin-screw

Fernandez, Thomas

377

A Comparison of Model-Scale Experimental Measurements and Computational Predictions for a Large Transom-Stern Wave  

E-Print Network [OSTI]

The flow field generated by a transom stern hull form is a complex, broad-banded, three-dimensional system marked by a large breaking wave. This unsteady multiphase turbulent flow feature is difficult to study experimentally and simulate numerically. Recent model-scale experimental measurements and numerical predictions of the wave-elevation topology behind a transom-sterned hull form, Model 5673, are compared and assessed in this paper. The mean height, surface roughness (RMS), and spectra of the breaking stern-waves were measured by Light Detection And Ranging (LiDAR) and Quantitative Visualization (QViz) sensors over a range of model speeds covering both wet- and dry-transom operating conditions. Numerical predictions for this data set from two Office of Naval Research (ONR) supported naval-design codes, Numerical Flow Analysis (NFA) and CFDship-Iowa-V.4, have been performed. Comparisons of experimental data, including LiDAR and QViz measurements, to the numerical predictions for wet-transom and dry transo...

Drazen, David A; Fu, Thomas C; Beale, Kristine L C; O'Shea, Thomas T; Brucker, Kyle A; Dommermuth, Douglas G; Wyatt, Donald C; Bhushan, Shanti; Carrica, Pablo M; Stern, Fred

2014-01-01T23:59:59.000Z

378

Core Measure Results  

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

Core Measure Core Measure Results FY 07 Results FY 08 Results FY 09 Results FY 10 Target FY 10 Customer Perspective: Customer Satisfaction: -Timeliness NM 81 NM NM NM -Quality NM 90 NM NM NM Effective Service Partnership: -Extent of Customer Satisfaction with the responsiveness, etc. NM 87 NM NM NM Internal Business Perspective: Acquisition Excellence: -Extent to which internal quality control systems are effective 86 87 84 87 88 Most Effective Use of Contracting Approaches to Maximize Efficiency and Cost Effectiveness: Use of Electronic Commerce: - % of delivery & purchase orders issued electronically as a % of total simplified actions 70 72 89 99 100 - % of new competitive transactions > $100K conducted through EC 70 72 91 100 95 Performance Based Service Contracts: - PBSCs awarded as a % of eligible new

379

Impedance Measurement Box  

SciTech Connect (OSTI)

Energy storage devices, primarily batteries, are now more important to consumers, industries and the military. With increasing technical complexity and higher user expectations, there is also a demand for highly accurate state-of-health battery assessment techniques. IMB incorporates patented, proprietary, and tested capabilities using control software and hardware that can be part of an embedded monitoring system. IMB directly measures the wideband impedance spectrum in seconds during battery operation with no significant impact on service life. It also can be applied to batteries prior to installation, confirming health before entering active service, as well as during regular maintenance. For more information about this project, visit http://www.inl.gov/rd100/2011/impedance-measurement-box/

Christophersen, Jon

2011-01-01T23:59:59.000Z

380

Measuring Value in Healthcare  

E-Print Network [OSTI]

A statistical description and model of individual healthcare expenditures in the US has been developed for measuring value in healthcare. We find evidence that healthcare expenditures are quantifiable as an infusion-diffusion process, which can be thought of intuitively as a steady change in the intensity of treatment superimposed on a random process reflecting variations in the efficiency and effectiveness of treatment. The arithmetic mean represents the net average annual cost of healthcare; and when multiplied by the arithmetic standard deviation, which represents the effective risk, the result is a measure of healthcare cost control. Policymakers, providers, payors, or patients that decrease these parameters are generating value in healthcare. The model has an average absolute prediction error of approximately 10-12% across the range of expenditures which spans 6 orders of magnitude over a nearly 10-year period. For the top 1% of the population with the largest expenditures, representing 20%-30% of total ...

Gardner, Christopher

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "broadband pyranometer measurements" 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

Sensors and Measurements Discussion  

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

Measurements for Assessment of Measurements for Assessment of Hydrate Related Geohazards" Report Type: Topical No: 41330R07 Starting March 2002 Ending September 2004 Edited by: R.L. Kleinberg and Emrys Jones September 2004 DOE Award Number: DE-FC26-01NT41330 Submitting Organization: ChevronTexaco Energy Technology Company 2811 Hayes Road Houston, TX 77082 ii DISCLAIMER "This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not

382

FINAL REPORT: Adopting Biophysics Methods in Pursuit of Biogeophysical Research: Advancing the Measurement and Modeling of Electrical Signatures of Microbe-Mineral Transformations Impacting Contaminant Transport  

SciTech Connect (OSTI)

This exploratory project involved laboratory experiments to investigate three hypotheses: (H1) Physics-based modeling of low-frequency dispersions (henceforth referred to as alpha) measured in broadband dielectric spectroscopy (DS) data can quantify pore-scale geometric changes impacting contaminant transport resulting from biomineralization; (H2) Physics-based modeling of high-frequency dispersions (henceforth referred to as beta) measured in broadband dielectric spectroscopy data can quantify rates of mineral growth in/on the cell wall; (H3) Application of this measurement and modeling approach can enhance geophysical interpretation of bioremediation experiments conducted at the RIFLE IFC by providing constraints on bioremediation efficiency (biomass concentration, mineral uptake within the cell wall, biomineralization rate). We tested H1 by performing DS measurements (alpha and beta range) on iron (Fe) particles of dimensions similar to microbial cells, dispersed within agar gels over a range of Fe concentrations. We have tested the ability of the physics-based modeling to predict volume concentrations of the Fe particles by assuming that the Fe particles are polarizable inclusions within an otherwise nonpolarizable medium. We evaluated the smallest volume concentration that can be detected with the DS method. Similar experiments and modeling have been performed on the sulfate-reducing bacteria D. vulgaris. Synchrotron x-ray absorption measurements were conducted to determine the local structure of biominerals coatings on D. vulgaris which were grown in the presence of different Fe concentrations. We imaged the mineral growth on cell wall using SEM. We used dielectric spectroscopy to differentiate between iron sulfide precipitates of biotic and abiotic nature. Biotic measurements were made on D. vulgaris bacteria grown in the presence of different concentrations of iron to form different thicknesses of iron sulfide precipitates around themselves and abiotic measurements were made on different concentrations of pyrrhotite particles suspended in agar. Results show a decrease in dielectric permittivity as a function of frequency for biotic minerals and an opposite trend is observed for abiotic minerals. Our results suggest that dielectric spectroscopy offers a noninvasive and fast approach for distinguishing between abiotic and biotic mineral precipitates.

PRODAN, CAMELIA; SLATER, LEE; NTARLAGIANNIS, DIMITRIOS

2012-09-01T23:59:59.000Z

383

Adopting Biophysics Methods in Pursuit of Biogeophysical Research: Advancing the measurement and modeling of electrical signatures of microbe-mineral transformations impacting contaminant transport  

SciTech Connect (OSTI)

This exploratory project involved laboratory experiments to investigate three hypotheses: (H1) Physics-based modeling of low-frequency dispersions (henceforth referred to as alpha) measured in broadband dielectric spectroscopy (DS) data can quantify pore-scale geometric changes impacting contaminant transport resulting from biomineralization; (H2) Physics-based modeling of high-frequency dispersions (henceforth referred to as beta) measured in broadband dielectric spectroscopy data can quantify rates of mineral growth in/on the cell wall; (H3) Application of this measurement and modeling approach can enhance geophysical interpretation of bioremediation experiments conducted at the RIFLE IFC by providing constraints on bioremediation efficiency (biomass concentration, mineral uptake within the cell wall, biomineralization rate). We tested H1 by performing DS measurements (alpha and beta range) on iron (Fe) particles of dimensions similar to microbial cells, dispersed within agar gels over a range of Fe concentrations. We have tested the ability of the physics-based modeling to predict volume concentrations of the Fe particles by assuming that the Fe particles are polarizable inclusions within an otherwise nonpolarizable medium. We evaluated the smallest volume concentration that can be detected with the DS method. Similar experiments and modeling have been performed on the sulfate-reducing bacteria D. vulgaris. Synchrotron x-ray absorption measurements were conducted to determine the local structure of biominerals coatings on D. vulgaris which were grown in the presence of different Fe concentrations. We imaged the mineral growth on cell wall using SEM. We used dielectric spectroscopy to differentiate between iron sulfide precipitates of biotic and abiotic nature. Biotic measurements were made on D. vulgaris bacteria grown in the presence of different concentrations of iron to form different thicknesses of iron sulfide precipitates around themselves and abiotic measurements were made on different concentrations of pyrrhotite particles suspended in agar. Results show a decrease in dielectric permittivity as a function of frequency for biotic minerals and an opposite trend is observed for abiotic minerals. Our results suggest that dielectric spectroscopy offers a noninvasive and fast approach for distinguishing between abiotic and biotic mineral precipitates.

Prodan, Camelia [NJIT

2013-06-14T23:59:59.000Z

384

Measuring Excellence at Concordia University  

E-Print Network [OSTI]

Measuring Excellence at Concordia University Prepared by the Institutional Planning Office May 2006 #12;Concordia University May 2006 Measuring Excellence at Concordia] #12;Concordia University May 2006 Measuring Excellence at Concordia University First Annual Report

Chv√°tal, Va¬?ek

385

Measuring Information Transfer  

Science Journals Connector (OSTI)

An information theoretic measure is derived that quantifies the statistical coherence between systems evolving in time. The standard time delayed mutual information fails to distinguish information that is actually exchanged from shared information due to common history and input signals. In our new approach, these influences are excluded by appropriate conditioning of transition probabilities. The resulting transfer entropy is able to distinguish effectively driving and responding elements and to detect asymmetry in the interaction of subsystems.

Thomas Schreiber

2000-07-10T23:59:59.000Z

386

Reimagining Quality Measurement  

Science Journals Connector (OSTI)

...would reflect both the appropriateness of individualized care plans and the degree to which they are being carried out effectively, both for individual patients and for the population cared for by a given physician, medical group, or health care system or within a particular community. Patients with multiple... In a reimagined approach, quality measurement in health care would be integrated with care delivery, address the challenges that confront doctors every day, and reflect individual patients' preferences and goals for treatment and health outcomes.

McGlynn E.A.Schneider E.C.Kerr E.A.

2014-12-04T23:59:59.000Z

387

Concentrating Energy by Measurement  

E-Print Network [OSTI]

In a recent article [A. Kurcz et al., Phys. Rev. A 81, 063821 (2010)] we predicted an energy concentrating mechanism in composite quantum systems. Its result is a non-zero stationary state photon emission rate even in the absence of external driving. Here we discuss the possible origin of the predicted effect. We attribute it to the presence of a non-trivial interaction between different system components and to repeated environment-induced photon measurements.

Almut Beige; Antonio Capolupo; Andreas Kurcz; Emilio Del Giudice; Giuseppe Vitiello

2010-12-29T23:59:59.000Z

388

Measured Performance Signature Method  

E-Print Network [OSTI]

information for adaptive on-line optimum dispatch, equipment performance monitoring, or for conducting system "what if' scenarios. The MPS is a very useful technique which may be applied to Acceptance Testing Monitoring and Operations Optimization... performance signature, may be determined from on-line measurements, and corrected to a specified reference. This procedure also provides information for adaptive on-line optimum dispatch, incremental plant heat rate data for centralized system dispatch...

Ahner, D. J.

389

Top Quark Mass Measurements  

Science Journals Connector (OSTI)

First observed in 1995 the top quark is one of a pair of third?generation quarks in the Standard Model of particle physics. It has charge +2/3e and a mass of 171.4 GeV about 40 times heavier than its partner the bottom quark. The CDF and Dō collaborations have identified several hundred events containing the decays of top?antitop pairs in the large dataset collected at the Tevatron proton?antiproton collider over the last four years. They have used these events to measure the top quarkís mass to nearly 1% precision and to study other top quark properties. The mass of the top quark is a fundamental parameter of the Standard Model and knowledge of its value with small uncertainty allows us to predict properties of the as?yet?unobserved Higgs boson. This paper presents the status of the measurements of the top quark mass. It is based on a talk I gave at the Conference on the Intersections of Particle and Nuclear Physics in Puerto Rico May 2006 which also included discussion of measurements of other top quark properties.

A. P. Heinson; CDF Collaboration; Dō Collaboration

2006-01-01T23:59:59.000Z

390

AC resistance measuring instrument  

DOE Patents [OSTI]

An auto-ranging AC resistance measuring instrument for remote measurement of the resistance of an electrical device or circuit connected to the instrument includes a signal generator which generates an AC excitation signal for application to a load, including the device and the transmission line, a monitoring circuit which provides a digitally encoded signal representing the voltage across the load, and a microprocessor which operates under program control to provide an auto-ranging function by which range resistance is connected in circuit with the load to limit the load voltage to an acceptable range for the instrument, and an auto-compensating function by which compensating capacitance is connected in shunt with the range resistance to compensate for the effects of line capacitance. After the auto-ranging and auto-compensation functions are complete, the microprocessor calculates the resistance of the load from the selected range resistance, the excitation signal, and the load voltage signal, and displays of the measured resistance on a digital display of the instrument. 8 figs.

Hof, P.J.

1983-10-04T23:59:59.000Z

391

Er{sup 3+}-doped strontium lithium bismuth borate glasses for broadband 1.5 {mu}m emission - optical properties  

SciTech Connect (OSTI)

Strontium lithium bismuth borate glasses (SLBiB) doped with various concentrations of Er{sup 3+} were prepared using conventional melt quench technique and investigated their optical properties. The amorphous nature of the prepared glass samples was confirmed by X-ray diffraction and SEM analysis. Optical properties were studied by measuring the optical absorption and near infrared luminescence spectra at room temperature. Judd-Ofelt (J-O) theory has been applied for the f.f transitions of Er{sup 3+} ions to evaluate J-O intensity parameters, {Omega}{lambda} ({lambda} = 2, 4 and 6). Using the J-O intensity parameters, radiative properties such as transition probabilities (A{sub R}), branching ratios ({beta}) and radiative lifetimes ({tau}) are estimated for certain transitions. From the emission spectra, peak emission-cross sections ({sigma}{sub p}) and products of stimulated emission cross-section and full width at half maximum ({sigma}{sub p} Multiplication-Sign FWHM) were calculated for the observed emission transition, {sup 4}I{sub 13/2}{yields}{sup 4}I{sub 15/2}.

Rajesh, D.; Balakrishna, A.; Ratnakaram, Y. C. [Department of Physics, Sri Venkateswara University, Tirupati-517502 (India)

2013-02-05T23:59:59.000Z

392

Cable Measuring Engine Operation Procedures  

E-Print Network [OSTI]

MEASURING ENGINE OPERATION PROCEDURES LBNL-40565 SC-MAG-597MEASURING ENGINE OPERATION PROCEDURES INDEX IN T ROD U C TCALIBRATION PROCEDURE . .

Authors, Various

2011-01-01T23:59:59.000Z

393

Measure concentration, functional inequalities, and curvature of metric measure spaces  

E-Print Network [OSTI]

Measure concentration, functional inequalities, and curvature of metric measure spaces M. Ledoux of measure phenomenon #12;circle of ideas between analysis, geometry and probability theory concentration of measure phenomenon dimension free #12;circle of ideas between analysis, geometry and probability theory

Ledoux, Michel

394

Fee Title: Renewable Energy Fee Measure #: Measure 44  

E-Print Network [OSTI]

Fee Title: Renewable Energy Fee Measure #: Measure 44 Ballot Information Shall the undergraduates and graduate students of UCSC amend Measure 28, the Renewable Energy fee passed in Spring 2006 as follows Student Association. This measure will also allow the reserve money to be spent on energy efficiency

California at Santa Cruz, University of

395

An Analysis of the Broadband (22-3900 MHz) Radio Spectrum of HB3 (G132.7+1.3): The Detection of Thermal Radio Emission from an Evolved Supernova Remnant?  

E-Print Network [OSTI]

We present an analysis of the broadband radio spectrum (from 22 to 3900 MHz) of the Galactic supernova remnant (SNR) HB3 (G132.7+1.3). Published observations have revealed that a curvature is present in the radio spectrum of this SNR, indicating that a single synchrotron component appears is insufficient to adequately fit the spectrum. We present here a fit to this spectrum using a combination of a synchrotron component and a thermal bremsstrahlung component. We discuss properties of this latter component and estimate the ambient density implied by the presence of this component to be n \\~ 10 cm^-3. We have also analyzed extracted X-ray spectra from archived {\\it ASCA} GIS observations of different regions of HB3 to obtain independent estimates of the density of the surrounding interstellar medium (ISM). From this analysis, we have derived electron densities of 0.1-0.4 f^-1/2 cm^-3 for the ISM for the three different regions of the SNR, where f is the volume filling factor. By comparing these density estimates with the estimate derived from the thermal bremsstrahlung component, we argue that the radio thermal bremsstrahlung emission is emitted from a thin shell enclosing HB3. The presence of this thermal bremsstrahlung component in the radio spectrum of HB3 suggests that this SNR is in fact interacting with an adjacent molecular cloud associated with the HII region W3. By extension, we argue that the presence of thermal emission at radio wavelengths may be a useful tool for identifying interactions between SNRs and molecular clouds, and for estimating the ambient density near SNRs using radio continuum data.

D. Urosevic; T. Pannuti; D. Leahy

2006-12-22T23:59:59.000Z

396

Quantitative Analysis of Spectral Impacts on Silicon Photodiode Radiometers  

SciTech Connect (OSTI)

Inexpensive broadband pyranometers with silicon photodiode detectors have a non-uniform spectral response over the spectral range of 300-1100 nm. The response region includes only about 70% to 75% of the total energy in the terrestrial solar spectral distribution from 300 nm to 4000 nm. The solar spectrum constantly changes with solar position and atmospheric conditions. Relative spectral distributions of diffuse hemispherical irradiance sky radiation and total global hemispherical irradiance are drastically different. This analysis convolves a typical photodiode response with SMARTS 2.9.5 spectral model spectra for different sites and atmospheric conditions. Differences in solar component spectra lead to differences on the order of 2% in global hemispherical and 5% or more in diffuse hemispherical irradiances from silicon radiometers. The result is that errors of more than 7% can occur in the computation of direct normal irradiance from global hemispherical irradiance and diffuse hemispherical irradiance using these radiometers.

Myers, D. R.

2011-01-01T23:59:59.000Z

397

Quantitative Analysis of Spectral Impacts on Silicon Photodiode Radiometers: Preprint  

SciTech Connect (OSTI)

Inexpensive broadband pyranometers with silicon photodiode detectors have a non-uniform spectral response over the spectral range of 300-1100 nm. The response region includes only about 70% to 75% of the total energy in the terrestrial solar spectral distribution from 300 nm to 4000 nm. The solar spectrum constantly changes with solar position and atmospheric conditions. Relative spectral distributions of diffuse hemispherical irradiance sky radiation and total global hemispherical irradiance are drastically different. This analysis convolves a typical photodiode response with SMARTS 2.9.5 spectral model spectra for different sites and atmospheric conditions. Differences in solar component spectra lead to differences on the order of 2% in global hemispherical and 5% or more in diffuse hemispherical irradiances from silicon radiometers. The result is that errors of more than 7% can occur in the computation of direct normal irradiance from global hemispherical irradiance and diffuse hemispherical irradiance using these radiometers.

Myers, D. R.

2011-04-01T23:59:59.000Z

398

CLASIC Measurement Platforms  

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

4 4 SGP Cloud and Land Surface Interaction Campaign (CLASIC): Measurement Platforms June 2007 Mark A. Miller, Principal Investigator and The CLASIC Steering Committee: Roni Avissar, Larry Berg, Sylvia Edgerton, Marc Fischer, Tom Jackson, Bill Kustas, Pete Lamb, Greg McFarquhar, Qilong Min, Beat Schmid, Margaret Torn, and Dave Turner Work supported by the U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research M.R. Miller et al., DOE/SC-ARM-0704 Contents 1. Introduction.............................................................................................................................1 2. Satellites..................................................................................................................................1

399

Upsilon measurement in STAR  

E-Print Network [OSTI]

We present preliminary results of Upsilon production in p+p collisions at sqrt(s)=200 GeV at central rapidity. This measurement was performed at the STAR experiment through the Upsilon->e^+e^- decay channel. In this manuscript we describe the experimental details, from the development of a specially designed trigger setup to the analysis methods used to discriminate electrons from hadrons. The production cross-section obtained B*{(dsigma/dy)|(y=0)}=91(28)(22) pb is compatible with our expectations based on pQCD calculations.

Mauro R. Cosentino

2007-06-06T23:59:59.000Z

400

Driver eye height measurement  

E-Print Network [OSTI]

was establish d in the early sixties when passenger vehicles were styled differentl; than tnda; . The changing design of passenger cars has resulted in a considerable lowering in the eye heights of drivers between 1960 and 1978. The objective of this ress rch... was to determine sI. atistically reliable measures of current driver eye height for different classes of vehicles and to determine the impact of these dat- on design and operating standards for streets and highways. It was found that 68 percent of drivers...

Abrahamson, Anthony Daniel

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "broadband pyranometer measurements" 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

Optically measuring interior cavities  

DOE Patents [OSTI]

A method of measuring the three-dimensional volume or perimeter shape of an interior cavity includes the steps of collecting a first optical slice of data that represents a partial volume or perimeter shape of the interior cavity, collecting additional optical slices of data that represents a partial volume or perimeter shape of the interior cavity, and combining the first optical slice of data and the additional optical slices of data to calculate of the three-dimensional volume or perimeter shape of the interior cavity.

Stone, Gary Franklin (Livermore, CA)

2008-12-21T23:59:59.000Z

402

Optical Quadratic Measure Eigenmodes  

E-Print Network [OSTI]

We report a mathematically rigorous technique which facilitates the optimization of various optical properties of electromagnetic fields. The technique exploits the linearity of electromagnetic fields along with the quadratic nature of their interaction with matter. In this manner we may decompose the respective fields into optical quadratic measure eigenmodes (QME). Key applications include the optimization of the size of a focused spot, the transmission through photonic devices, and the structured illumination of photonic and plasmonic structures. We verify the validity of the QME approach through a particular experimental realization where the size of a focused optical field is minimized using a superposition of Bessel beams.

Michael Mazilu; Joerg Baumgartl; Sebastian Kosmeier; Kishan Dholakia

2010-07-13T23:59:59.000Z

403

Surface cleanliness measurement procedure  

DOE Patents [OSTI]

A procedure and tools for quantifying surface cleanliness are described. Cleanliness of a target surface is quantified by wiping a prescribed area of the surface with a flexible, bright white cloth swatch, preferably mounted on a special tool. The cloth picks up a substantial amount of any particulate surface contamination. The amount of contamination is determined by measuring the reflectivity loss of the cloth before and after wiping on the contaminated system and comparing that loss to a previous calibration with similar contamination. In the alternative, a visual comparison of the contaminated cloth to a contamination key provides an indication of the surface cleanliness.

Schroder, Mark Stewart (Hendersonville, NC); Woodmansee, Donald Ernest (Simpsonville, SC); Beadie, Douglas Frank (Greenville, SC)

2002-01-01T23:59:59.000Z

404

Method for resonant measurement  

DOE Patents [OSTI]

A method of measurement of objects to determine object flaws, Poisson's ratio (.sigma.) and shear modulus (.mu.) is shown and described. First, the frequency for expected degenerate responses is determined for one or more input frequencies and then splitting of degenerate resonant modes are observed to identify the presence of flaws in the object. Poisson's ratio and the shear modulus can be determined by identification of resonances dependent only on the shear modulus, and then using that shear modulus to find Poisson's ratio using other modes dependent on both the shear modulus and Poisson's ratio.

Rhodes, George W. (5201 Rio Grande Blvd., N.W., Albuquerque, NM 87107); Migliori, Albert (Rte. 4, Box 258 Tano Rd., Sante Fe, NM 87501); Dixon, Raymond D. (396 Connie Ave., White Rock, NM 87544)

1996-01-01T23:59:59.000Z

405

7, 1401114039, 2007 measurements in  

E-Print Network [OSTI]

) methane measurements conducted in the bo- real forests of Finland and the tropical forests of Suriname

Paris-Sud XI, Université de

406

Ultra-fast charge exchange spectroscopy for turbulent ion temperature fluctuation measurements on the DIII-D tokamak (invited)  

SciTech Connect (OSTI)

A novel two-channel, high throughput, high efficiency spectrometer system has been developed to measure impurity ion temperature and toroidal velocity fluctuations associated with long-wavelength turbulence and other plasma instabilities. The spectrometer observes the emission of the n= 8-7 hydrogenic transition of C{sup +5} ions ({lambda}{sub air}= 529.06 nm) resulting from charge exchange reactions between deuterium heating beams and intrinsic carbon. Novel features include a large, prism-coupled high-dispersion, volume-phase-holographic transmission grating and high-quantum efficiency, high-gain, low-noise avalanche photodiode detectors that sample emission at 1 MHz. This new diagnostic offers an order-of-magnitude increase in sensitivity compared to earlier ion thermal turbulence measurements. Increased sensitivity is crucial for obtaining enough photon statistics from plasmas with much less impurity content. The irreducible noise floor set by photon statistics sets the ultimate sensitivity to plasma fluctuations. Based on the measured photon flux levels for the entire spectral line, photon noise levels for T(tilde sign){sub i}/T{sub i} and V(tilde sign){sub i}/V{sub i} of {approx}1% are expected, while statistical averaging over long data records enables reduction in the detectable plasma fluctuation levels to values less than that. Broadband ion temperature fluctuations are observed to near 200 kHz in an L-mode discharge. Cross-correlation with the local beam emission spectroscopy measurements demonstrates a strong coupling of the density and temperature fields, and enables the cross-phase measurements between density and ion temperature fluctuations.

Uzun-Kaymak, I. U.; Fonck, R. J.; McKee, G. R. [Department of Engineering Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States)

2012-10-15T23:59:59.000Z

407

Paleomagnetic Measurements | Open Energy Information  

Open Energy Info (EERE)

Paleomagnetic Measurements Paleomagnetic Measurements Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Paleomagnetic Measurements Details Activities (1) Areas (1) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Lab Analysis Techniques Exploration Sub Group: Rock Lab Analysis Parent Exploration Technique: Rock Lab Analysis Information Provided by Technique Lithology: Can determine detailed information about rock composition and morphology Stratigraphic/Structural: Historic structure and deformation of land Hydrological: Thermal: Dictionary.png Paleomagnetic Measurements: Paleomagnetism is the study of remnant magnetization in rocks. Paleomagnetic measurements are measurements of the magnetic properties in rocks; these properties are locked in during the formation of the rock. A

408

Measurement uncertainty in the performance verification of indicating measuring instruments  

Science Journals Connector (OSTI)

This paper is concerned with measurement uncertainty in the performance verification of the metrological characteristics of indicating measuring instruments to specified tolerances, often called maximum permissible errors (MPE). Performance verification differs from other types of calibrations in that the measurement does not necessarily result in an assigned quantity value. When a measurement involves assigning a quantity value, as is typical with the calibration of material measures or inspection of features on commercial workpieces, the measurand is different than in performance verification. The research literature and published standards and practice for measurement uncertainty typically only address the measurement uncertainty associated with assigned quantity values. When these general approaches to measurement uncertainty are applied to performance verification as well, the measurement uncertainty is not properly estimated and therefore incorrect practice is wide spread in the calibration industry. The purpose of this paper is to clarify the measurand in performance verification and to develop an associated general measurement uncertainty model. Examples are presented that highlight some cases where a measurand associated with performance verification results in a very different measurement uncertainty than when the measurand is associated with the assignment of a quantity value. Some issues for future work are also identified, particularly for consideration in the standardization of specifications for indicating measuring instruments.

James G. Salsbury; Edward P. Morse

2012-01-01T23:59:59.000Z

409

MEASUREMENT OF BUILDING AREAS MEASUREMENT OF BUILDING AREAS  

E-Print Network [OSTI]

) Common Use Areas All floored areas in the building for circulation and standard facilities provided and the like. These are extracts of NWPC standard method of measurement of building areas with an addition fromSection S ANNEXURE 4 MEASUREMENT OF BUILDING AREAS MEASUREMENT OF BUILDING AREAS 1. GROSS BUILDING

Wang, Yan

410

Dilepton measurements with HADES  

E-Print Network [OSTI]

HADES is the only operating dielectron spectrometer in the energy regime 1-2 AGeV. The physics program aims at a systematic investigation of dielectron production in heavy ion as well as elementary and pion-induced reactions. This contribution highlights recent results on electron pair production in C12+C12 collisions at an incident energy of 2 AGeV with HADES. The measured pair production probabilities span over five orders of magnitude. Dalitz decays of pi0 and eta account for all the yield up to 0.15 GeV/c2, but for only about 50% above this invariant mass. The excess yield compared to the hadronic cocktail between the pi0-Dalitz and the rho/omega invariant-mass region is in agreement with the former DLS result if one assumes that it scales with beam energy like pion production. Preliminary results from C12+C12 collisions at an incident energy of 1 AGeV support this scenario.

MŁntz, C

2007-01-01T23:59:59.000Z

411

Dilepton measurements with HADES  

E-Print Network [OSTI]

HADES is the only operating dielectron spectrometer in the energy regime 1-2 AGeV. The physics program aims at a systematic investigation of dielectron production in heavy ion as well as elementary and pion-induced reactions. This contribution highlights recent results on electron pair production in C12+C12 collisions at an incident energy of 2 AGeV with HADES. The measured pair production probabilities span over five orders of magnitude. Dalitz decays of pi0 and eta account for all the yield up to 0.15 GeV/c2, but for only about 50% above this invariant mass. The excess yield compared to the hadronic cocktail between the pi0-Dalitz and the rho/omega invariant-mass region is in agreement with the former DLS result if one assumes that it scales with beam energy like pion production. Preliminary results from C12+C12 collisions at an incident energy of 1 AGeV support this scenario.

C. Muentz; for the HADES collaboration

2007-10-17T23:59:59.000Z

412

Entanglement Cost of Nonlocal Measurements  

E-Print Network [OSTI]

For certain joint measurements on a pair of spatially separated particles, we ask how much entanglement is needed to carry out the measurement exactly. For a class of orthogonal measurements on two qubits with partially entangled eigenstates, we present upper and lower bounds on the entanglement cost. The upper bound is based on a recent result by D. Berry [Phys. Rev. A 75, 032349 (2007)]. The lower bound, based on the entanglement production capacity of the measurement, implies that for almost all measurements in the class we consider, the entanglement required to perform the measurement is strictly greater than the average entanglement of its eigenstates. On the other hand, we show that for any complete measurement in d x d dimensions that is invariant under all local Pauli operations, the cost of the measurement is exactly equal to the average entanglement of the states associated with the outcomes.

Somshubhro Bandyopadhyay; Gilles Brassard; Shelby Kimmel; William K. Wootters

2008-09-12T23:59:59.000Z

413

On Jordan's measurements Frdric Brechenmacher  

E-Print Network [OSTI]

1 On Jordan's measurements Fr√©d√©ric Brechenmacher Univ. Lille : ANR CaaF√? ("ANR-10-JCJC 0101"). Introduction The Jordan measure, the Jordan curve theorem, as well as the other generic references to Camille Jordan

Paris-Sud XI, Université de

414

Entanglement cost of nonlocal measurements  

SciTech Connect (OSTI)

For certain joint measurements on a pair of spatially separated particles, we ask how much entanglement is needed to carry out the measurement exactly. For a class of orthogonal measurements on two qubits with partially entangled eigenstates, we present upper and lower bounds on the entanglement cost. The upper bound is based on a recent result by Berry [Phys. Rev. A 75, 032349 (2007)]. The lower bound, based on the entanglement production capacity of the measurement, implies that for almost all measurements in the class we consider, the entanglement required to perform the measurement is strictly greater than the average entanglement of its eigenstates. On the other hand, we show that for any complete measurement in dxd dimensions that is invariant under all local generalized Pauli operations, the cost of the measurement is exactly equal to the average entanglement of the states associated with the outcomes.

Bandyopadhyay, Somshubhro; Brassard, Gilles [Departement IRO, Universite de Montreal, Montreal, Quebec, H3C 3J7 (Canada); Kimmel, Shelby; Wootters, William K. [Department of Physics, Williams College, Williamstown, Massachusetts 01267 (United States)

2009-07-15T23:59:59.000Z

415

Prioritization Tool Measurement Input Form  

Broader source: Energy.gov [DOE]

BTO encourages stakeholders to recommend updates and improvements to the Prioritization Tool by using the below Measure Input Form.

416

MEASUREMENT, MATERIALS & SUSTAINABLE ENVIRONMENT CENTER  

E-Print Network [OSTI]

M2SEC MEASUREMENT, MATERIALS & SUSTAINABLE ENVIRONMENT CENTER #12;#12;M2SEC | The University 66045 MEASUREMENT, MATERIALS & SUSTAINABLE ENVIRONMENT CENTER The Measurement, Materials Sustainable initiative themes of KU's strategic plan, Bold Aspirations: · Sustaining The Planet, Powering The World

417

ERROR ESTIMATIONS FOR INDIRECT MEASUREMENTS  

E-Print Network [OSTI]

Chapter 1 ERROR ESTIMATIONS FOR INDIRECT MEASUREMENTS: RANDOMIZED VS. DETERMINISTIC ALGORITHMS difficult or even impossible to directly measure the quantity in which we are interested: e.g., we cannot directly measure a distance to a distant galaxy or the amount of oil in a given well. Since we cannot

Kreinovich, Vladik

418

Bruce A. Measure Dick Wallace  

E-Print Network [OSTI]

Bruce A. Measure Chair Montana Dick Wallace Vice-Chair Washington Rhonda Whiting Montana W. Bill Council Meeting Portland Oregon December 14-15, 2010 Minutes Council Chair Bruce Measure called products, Measure noted. Next year's meetings of the board will be held in March, July, and November, he

419

Extremal covariant measurements Giulio Chiribellaa  

E-Print Network [OSTI]

Extremal covariant measurements Giulio Chiribellaa and Giacomo Mauro D'Arianob Istituto Nazionale characterize the extremal points of the convex set of quantum measurements that are covariant under a finite operators, and, in the case of extremal measurements, we provide a bound for the number of orbits

D'Ariano, Giacomo Mauro

420

Information content of polarization measurements  

Science Journals Connector (OSTI)

Information entropy is applied to the state of knowledge of reaction amplitudes in pseudoscalar meson photoproduction, and a scheme is developed that quantifies the information content of a measured set of polarization observables. It is shown that this definition of information is a more practical measure of the quality of a set of measured observables than whether the combination is a mathematically complete set. It is also shown that, when experimental uncertainty is introduced, complete sets of measurements do not necessarily remove ambiguities and that experiments should strive to measure as many observables as practical to extract amplitudes.

D. G. Ireland

2010-08-13T23:59:59.000Z

Note: This page contains sample records for the topic "broadband pyranometer measurements" 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

FastMeasure Distance Measuring Tools | Open Energy Information  

Open Energy Info (EERE)

FastMeasure Distance Measuring Tools FastMeasure Distance Measuring Tools Jump to: navigation, search Logo: FastMeasure Distance Measuring Tools Name FastMeasure Distance Measuring Tools Address 2890 Cherokee Lane Place Riverwoods, Illinois Zip 60015 Sector Vehicles Product Distance Measuring Instrument Year founded 2008 Number of employees 11-50 Phone number (888) 876-6050 Website http://www.fast-measure.com Coordinates 42.181686¬į, -87.898862¬į 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":42.181686,"lon":-87.898862,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

422

ARM - Measurement - Trace gas concentration  

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

govMeasurementsTrace gas concentration govMeasurementsTrace gas concentration ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Trace gas concentration The amount per unit volume of trace gases other than carbon dioxide, ozone and water vapor, typically measured in conjunction with in situ aerosol measurements, e.g. carbon monoxide, nitrogen oxides, sulfur dioxide. Categories Atmospheric Carbon, Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments CO : Carbon Monoxide Mixing Ratio System

423

ARM - Measurement - Soil surface temperature  

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

surface temperature surface temperature ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Soil surface temperature The temperature of the soil measured near the surface. Categories Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AMC : Ameriflux Measurement Component CO2FLX : Carbon Dioxide Flux Measurement Systems SOIL : Soil Measurement from the SGP SWATS : Soil Water and Temperature System MET : Surface Meteorological Instrumentation

424

ARM - Measurement - Sensible heat flux  

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

govMeasurementsSensible heat flux govMeasurementsSensible heat flux ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Sensible heat flux The time rate of flow for the energy transferred from a warm or hot surface to whatever is touching it, typically air. Categories Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments CO2FLX : Carbon Dioxide Flux Measurement Systems ECOR : Eddy Correlation Flux Measurement System EBBR : Energy Balance Bowen Ratio Station

425

ARM - Measurement - Latent heat flux  

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

govMeasurementsLatent heat flux govMeasurementsLatent heat flux ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Latent heat flux The time rate of flow for the specific enthalpy difference between two phases of a substance at the same temperature, typically water. Categories Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments CO2FLX : Carbon Dioxide Flux Measurement Systems ECOR : Eddy Correlation Flux Measurement System EBBR : Energy Balance Bowen Ratio Station

426

Graphene as Gain Medium for Broadband Lasers  

E-Print Network [OSTI]

In contrast to conventional structures, efficient non-radiative carrier recombination counteracts the appearance of optical gain in graphene. Based on a microscopic and fully quantum-mechanical study of the coupled carrier, phonon, and photon dynamics in graphene, we present a strategy to obtain a long-lived gain: Integrating graphene into a photonic crystal nanocavity and applying a high-dielectric substrate gives rise to pronounced coherent light emission suggesting the design of graphene-based laser devices covering a broad spectral range.

Jago, Roland; Knorr, Andreas; Malic, Ermin

2014-01-01T23:59:59.000Z

427

The Broadband Spectrum of Galaxy Clusters  

E-Print Network [OSTI]

We examine whether nonthermal protons energized during a cluster merger are simultaneously responsible for the Coma cluster's diffuse radio flux (via secondary decay) and the departure of its intra-cluster medium (ICM) from a thermal profile via Coulomb collisions between the quasithermal electrons and the hadrons. Rather than approximating the influence of nonthermal proton/thermal electron collisions as extremely rare events which cause an injection of nonthermal, power-law electrons (the `knock-on' approximation), we self-consistently solve (to our knowledge, for the first time) the covariant kinetic equations for the two populations. The electron population resulting from these collisions is out of equilibrium, yet not a power law, and importantly displays a higher bremsstrahlung radiative efficiency than a pure power law. Observations with GLAST will test this model directly.

Brandon Wolfe; Fulvio Melia

2007-12-02T23:59:59.000Z

428

Optical Broadband Angular Selectivity Yichen Shen,1  

E-Print Network [OSTI]

,2 John D Joannopoulos,1 and Marin Soljaci¬īc1 1 Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA 2 Department of Mathematics, Massachusetts Institute in many applications, such as high efficiency solar energy conversion (9,10), privacy protection (11

Soljaèiæ, Marin

429

The Broadband Heating Rate Profile (BBHRP) VAP  

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

brown-97.pdf Clothiaux, E. E., T. P. Ackerman, G. G. Mace, K. P. Moran, R. T. Marchand, M. Miller, and B. E. Martner, 2000: Objective determination of cloud heights and...

430

Nanogap Transducer for Broadband Gravitational Wave Detection  

E-Print Network [OSTI]

By changing from a resonant multimode paradigm to a free mass paradigm for transducers in resonant mass gravitational wave detection, an array of six spheres can achieve a sensitivity response curve competitive with interferometers, being as sensitive as GEO600 and TAMA300 in the 3 to 6 kHz band and more sensitive than LIGO for 50 percent of the 6 to 10 kHz band. We study how to assemble a klystron resonant cavity that has a 1 nm gap by understanding the stability of the forces applied at it (Casimir force, elastic force, weight). This approach has additional benefits. First, due to the relatively inexpensive nature of this technology (around US$ 1 million), it is accessible to a broader part of the world scientific community. Additionally, spherical resonant mass detectors have the ability to discern both the direction and polarization resolutions.

Guilherme L. Pimentel; Odylio D. Aguiar; Michael E. Tobar; Joaquim J. Barroso; Rubens de M. Marinho

2009-10-06T23:59:59.000Z

431

Measure Title: Sustainable Food, Health, and Wellness Initiative Measure #: Measure 43  

E-Print Network [OSTI]

Measure Title: Sustainable Food, Health, and Wellness Initiative Measure #: Measure 43 Ballot related to sustainable food, health and wellness initiatives, for on-campus and off- campus undergraduate,663* annually. · The funding will be governed by the Center for Agroecology and Sustainable Food Systems (CASFS

California at Santa Cruz, University of

432

ARM ARM Atmospheric Radiation Measurement Atmospheric Radiation Measurement  

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

An Integrated Column Description An Integrated Column Description of the Atmosphere An Integrated Column Description of the Atmosphere Tom Ackerman Chief Scientist Tom Ackerman Chief Scientist ARM ARM Atmospheric Radiation Measurement Atmospheric Radiation Measurement Pacific Northwest National Laboratory Pacific Northwest National Laboratory The "other" Washington ARM ARM Atmospheric Radiation Measurement Atmospheric Radiation Measurement Credits to Credits to * Ric Cederwall * Xiquan Dong * Chuck Long * Jay Mace * Mark Miller * Robin Perez * Dave Turner and the rest of the ARM science team * Ric Cederwall * Xiquan Dong * Chuck Long * Jay Mace * Mark Miller * Robin Perez * Dave Turner and the rest of the ARM science team ARM ARM Atmospheric Radiation Measurement Atmospheric Radiation Measurement Outline Outline * A little philosophy

433

A comparison of cloudiness measures derived from longwave measurements and  

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

A comparison of cloudiness measures derived from longwave measurements and A comparison of cloudiness measures derived from longwave measurements and shortwave sky imagers Takara, Ezra Florida State University Ellingson, Robert Florida State University Ma, Yingtao University of Maryland Category: Cloud Properties In the longwave, two measures of cloudiness for single layer clouds are the probability of clear line of sight (PCLoS) and the effective cloud fraction. As the name states, the PCLoS is the probability of a clear line of sight through a broken cloud field. The effectivecloud fraction is the fraction of the sky that is taken up by the clouds; this includes the portion blocked by the cloud sides as well as the fraction taken up by the cloud bases. The effective cloud fraction can be derived from measurements or from the PCLoS. Here the PCLoS obtained from the shortwave-based Total

434

Measures of disturbance and incompatibility for quantum measurements  

E-Print Network [OSTI]

We propose a class of incompatibility measures for quantum observables based on quantifying the effect of a measurement of one observable on the statistics of the outcomes of another. Specifically, for a pair of observables $A$ and $B$ with purely discrete spectra, we compare the following two probability distributions: one resulting from a measurement of $A$ followed by a measurement of $B$ on a given state, and the other obtained from a measurement of $B$ alone on the same state. We show that maximizing the distance between these two distributions over all states yields a valid measure of the incompatibility of observables $A$ and $B$, which is zero if and only if they commute and is strictly greater than zero (and less than or equal to one) otherwise. For finite dimensional systems, we obtain a tight upper bound on the incompatibility of any pair of observables and show that the bound is attained when the observables are totally non-degenerate and associated with mutually unbiased bases. In the process, we also establish an important connection between the incompatibility of a pair of observables and the maximal disturbances due to their measurements. Finally, we indicate how these measures of incompatibility and disturbance can be extended to the more general class of non-projective measurements. In particular, we obtain a non-trivial upper bound on the incompatibility of one L\\"uders instrument with another.

Prabha Mandayam; M. D. Srinivas

2014-02-04T23:59:59.000Z

435

ARM - Publications: Science Team Meeting Documents  

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

Rotating Shadow Arm for Broadband Hemispheric Radiometers: Instrument Design and Concept Verification Using Atmospheric Radiation Measurement Southern Great Plains Radiometer...

436

Cloning of a quantum measurement  

SciTech Connect (OSTI)

We analyze quantum algorithms for cloning of a quantum measurement. Our aim is to mimic two uses of a device performing an unknown von Neumann measurement with a single use of the device. When the unknown device has to be used before the bipartite state to be measured is available we talk about 1{yields}2 learning of the measurement, otherwise the task is called 1{yields}2 cloning of a measurement. We perform the optimization for both learning and cloning for arbitrary dimension d of the Hilbert space. For 1{yields}2 cloning we also propose a simple quantum network that achieves the optimal fidelity. The optimal fidelity for 1{yields}2 learning just slightly outperforms the estimate and prepare strategy in which one first estimates the unknown measurement and depending on the result suitably prepares the duplicate.

Bisio, Alessandro; D'Ariano, Giacomo Mauro; Perinotti, Paolo; Sedlak, Michal [QUIT Group, Dipartimento di Fisica ''A. Volta'' and INFN, via Bassi 6, I-27100 Pavia (Italy); QUIT Group, Dipartimento di Fisica ''A. Volta'' via Bassi 6, I-27100 Pavia (Italy) and Institute of Physics, Slovak Academy of Sciences, Dubravska cesta 9, SK-845 11 Bratislava (Slovakia)

2011-10-15T23:59:59.000Z

437

Quantum measurements of coupled systems  

SciTech Connect (OSTI)

We propose an approach to measuring coupled systems, which gives a parametrically smaller error than the conventional fast projective measurements. The measurement error is due to the excitations being not entirely localized on individual systems even where the excitation energies are different. Our approach combines spectral selectivity of the detector with temporal resolution and uses the ideas of the quantum diffusion theory. The results bear on quantum computing with perpetually coupled qubits.

Fedichkin, L.; Dykman, M. I. [Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824 (United States); Shapiro, M. [Department of Mathematics, Michigan State University, East Lansing, Michigan 48824 (United States)

2009-07-15T23:59:59.000Z

438

Measurement enhancement for state estimation  

E-Print Network [OSTI]

, the control center receives the system-wide device information and measurement data through the Supervisory Control and Data Acquisition (SCADA) system. However, the information and measurement data provided by SCADA may not always be accurate and reliable... estimation use the measurement data from SCADA system, the status information about the circuit breakers (CB), switches and transformer taps, as well as the parameters of transmission lines, transformers, shunts capacitors/reactors and other devices...

Chen, Jian

2009-05-15T23:59:59.000Z

439

Efficiency measurements of TPV cells  

SciTech Connect (OSTI)

An apparatus for measuring TPV cell efficiencies at different radiation intensities and for different graybody emitter temperatures has been constructed. The apparatus has been used for measuring V-I characteristics, efficiencies and fill factors for several InGaAs TPV cells. Measured results are used to determine how cells may function together with edge filters, and those results are compared with theory. {copyright} {ital 1997 American Institute of Physics.}

Broman, L.; Jarefors, K. [Solar Energy Research Center, Hoegskolan Dalarna, S-781 88 Borlaenge (Sweden); Marks, J. [Department of Operational Efficiency, Swedish University of Agricultural Sciences, Box 7060, S-750 07 Uppsala (Sweden); Wanlass, M. [National Renewable Energy Laboratory, 1617 Cole Boulevard, Golden, Colorado 80401-3393 (United States of America)

1997-03-01T23:59:59.000Z

440

Viscosity Measurements on Gaseous Ethane  

Science Journals Connector (OSTI)

Viscosity Measurements on Gaseous Ethane ... Only the pressures, densities, and viscosities are given in the table with regard to the large number of experimental points. ...

JŲrg Wilhelm; Daniel Seibt; Eckhard Vogel; Daniel Buttig; Egon Hassel

2005-11-08T23:59:59.000Z

Note: This page contains sample records for the topic "broadband pyranometer measurements" 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

Purification of noisy quantum measurements  

SciTech Connect (OSTI)

We consider the problem of improving noisy quantum measurements by suitable preprocessing strategies making many noisy detectors equivalent to a single ideal detector. For observables pertaining to finite-dimensional systems (e.g., qubits or spins) we consider preprocessing strategies that are reminiscent of quantum error correction procedures and allow one to perfectly measure an observable on a single quantum system for increasing number of inefficient detectors. For measurements of observables with an unbounded spectrum (e.g., photon number and homodyne and heterodyne detection), the purification of noisy quantum measurements can be achieved by preamplification as suggested by Yuen [Opt. Lett. 12, 789 (1987)].

Dall'Arno, Michele; D'Ariano, Giacomo Mauro [Quit Group, Dipartimento di Fisica 'A. Volta', via Bassi 6, I-27100 Pavia (Italy); Istituto Nazionale di Fisica Nucleare, Gruppo IV, via Bassi 6, I-27100 Pavia (Italy); Sacchi, Massimiliano F. [Quit Group, Dipartimento di Fisica 'A. Volta', via Bassi 6, I-27100 Pavia (Italy); Istituto di Fotonica e Nanotecnologie (IFN-CNR), Piazza Leonardo da Vinci 32, I-20133 Milano (Italy)

2010-10-15T23:59:59.000Z

442

Nuclear Safeguards Verification Measurement Techniques  

Science Journals Connector (OSTI)

This chapter deals with the ďnuclear safeguardsĒ verification system and describes procedures and measurement methods that allow the safeguards inspectorates/authorities...

M. Zendel; D. L. Donohue; E. Kuhn; S. Deron; T. BŪrů

2011-01-01T23:59:59.000Z

443

Vibration measurement using videogrammetric method.  

E-Print Network [OSTI]

??Measuring displacement for large-scale structures has always been an important yet challenging task. In most applications, it is not feasible to provide a stationary platformÖ (more)

Xiao, Xinghua

2009-01-01T23:59:59.000Z

444

ARM - Measurement - Longwave narrowband radiance  

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

Send Measurement : Longwave narrowband radiance The rate at which radiant energy in the longwave portion of the spectrum is emitted in narrow wavelength bands in a...

445

Mini genset for vibration measurement.  

E-Print Network [OSTI]

??Detta examensarbete gjordes vid Wšrtsilš Service, Vibration Environmental and Measurement Technologies i Runsor, Vasa. Syftet med detta examensarbete var att designa och bygga ett minigensetÖ (more)

Mann, Dennis

2012-01-01T23:59:59.000Z

446

Audio-Frequency Power Measurements  

Science Journals Connector (OSTI)

... " prepared by the National Physical Laboratory, Teddington, is a brief pamphlet dealing with "Audio-Frequency Power Measurements" (pp. 16. London: H.M.S.O., 1954; ...

1955-09-10T23:59:59.000Z

447

Standoff reflectionĖabsorption spectra of surface adsorbed explosives measured with pulsed quantum cascade lasers  

Science Journals Connector (OSTI)

Abstract We demonstrate a standoff detection scheme of surface adsorbed explosives based on the broadband quantum cascade laser (QCL) infrared reflectionĖabsorption spectroscopy and ultraviolet laser photodecomposition. We utilized a sub-second rapid-scan data acquisition scheme to record continuously scanned spectra which revealed the broad-band absorption features of surface adsorbed explosive molecules such as cyclotrimethylene trinitramine (RDX) and trinitrotoluene with a surface concentration of 1†?g/cm2. The standoff QCL spectra perfectly reproduce the reflectance spectra obtained with a conventional Fourier transform infrared spectroscopy instrument. The conformation conversion of RDX molecules is also observed and studied.

Xunchen Liu; Charles W. Van Neste; Manisha Gupta; Ying Y. Tsui; Seonghwan Kim; Thomas Thundat

2014-01-01T23:59:59.000Z

448

Can Wind Lidars Measure Turbulence?  

Science Journals Connector (OSTI)

Modeling of the systematic errors in the second-order moments of wind speeds measured by continuous-wave (ZephIR) and pulsed (WindCube) lidars is presented. These lidars use the conical scanning technique to measure the velocity field. The model ...

A. Sathe; J. Mann; J. Gottschall; M. S. Courtney

2011-07-01T23:59:59.000Z

449

Distributed Internet Security and Measurement  

E-Print Network [OSTI]

BGP (the Internet's interdomain routing protocol). It introduces Pretty Good BGP, an anomaly detection#12;Distributed Internet Security and Measurement by Josh Karlin B.A., Computer Science Internet Security and Measurement by Josh Karlin ABSTRACT OF DISSERTATION Submitted in Partial Fulfillment

Forrest, Stephanie

450

ESnet Network Measurement Current Status  

E-Print Network [OSTI]

1 ESnet Network Measurement Current Status Joe Metzger Jan 24th 2008 ESCC meeting Energy SciencesSONAR collaboration focused on dynamic hybrid network issues ­ publication, visualization, and analysis of dynamic Architecture ­ Protocols based on the Open Grid Forum Network Measurement Working Group Schemas · Several

451

Phenomenology of the CAH+ measure  

E-Print Network [OSTI]

The CAH+ measure regulates the infinite spacetime volume of the multiverse by constructing a surface of constant comoving apparent horizon (CAH) and then removing the future lightcones of all points on that surface (the latter prescription is referred to by the "+" in the name of the measure). This measure was motivated by the conjectured duality between the bulk of the multiverse and its future infinity and by the causality condition, requiring that the cutoff surfaces of the measure should be spacelike or null. Here we investigate the phenomenology of the CAH+ measure and find that it does not suffer from any known pathologies. The distribution for the cosmological constant Lambda derived from this measure is in a good agreement with the observed value, and the distribution for the number of inflationary e-foldings satisfies the observational constraint. The CAH+ measure does not exhibit any "runaway" behaviors at zero or negative values of Lambda, which have been recently shown to afflict a number of other measures.

Michael P. Salem; Alexander Vilenkin

2011-09-20T23:59:59.000Z

452

MULTISCALE THERMAL-INFRARED MEASUREMENTS OF THE MAUNA LOA CALDERA, HAWAII  

SciTech Connect (OSTI)

Until recently, most thermal infrared measurements of natural scenes have been made at disparate scales, typically 10{sup {minus}3}-10{sup {minus}2} m (spectra) and 10{sup 2}-10{sup 3} m (satellite images), with occasional airborne images (10{sup 1} m) filling the gap. Temperature and emissivity fields are spatially heterogeneous over a similar range of scales, depending on scene composition. A common problem for the land surface, therefore, has been relating field spectral and temperature measurements to satellite data, yet in many cases this is necessary if satellite data are to be interpreted to yield meaningful information about the land surface. Recently, three new satellites with thermal imaging capability at the 10{sup 1}-10{sup 2} m scale have been launched: MTI, TERRA, and Landsat 7. MTI acquires multispectral images in the mid-infrared (3-5{micro}m) and longwave infrared (8-10{micro}m) with 20m resolution. ASTER and MODIS aboard TERRA acquire multispectral longwave images at 90m and 500-1000m, respectively, and MODIS also acquires multispectral mid-infrared images. Landsat 7 acquires broadband longwave images at 60m. As part of an experiment to validate the temperature and thermal emissivity values calculated from MTI and ASTER images, we have targeted the summit region of Mauna Loa for field characterization and near-simultaneous satellite imaging, both on daytime and nighttime overpasses, and compare the results to previously acquired 10{sup {minus}1} m airborne images, ground-level multispectral FLIR images, and the field spectra. Mauna Loa was chosen in large part because the 4x6km summit caldera, flooded with fresh basalt in 1984, appears to be spectrally homogeneous at scales between 10{sup {minus}1} and 10{sup 2} m, facilitating the comparison of sensed temperature. The validation results suggest that, with careful atmospheric compensation, it is possible to match ground measurements with measurements from space, and to use the Mauna Loa validation site for cross-comparison of thermal infrared sensors and temperature/emissivity extraction algorithms.

L. BALICK; A. GILLESPIE; ET AL

2001-03-01T23:59:59.000Z

453

ARM - Measurement - Organic Carbon Concentration  

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

govMeasurementsOrganic Carbon Concentration govMeasurementsOrganic Carbon Concentration ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Organic Carbon Concentration The concentration of carbon bound in organic compounds. Categories Aerosols Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments ACSM : Aerosol Chemical Speciation Monitor Field Campaign Instruments AEROSCARBON : Aerosol Carbon Analyzer AEROSMASSSPEC : Aerosol Mass Spectrometer Datastreams AOS : Aerosol Observing System Datastreams

454

ARM - Measurement - Sea surface temperature  

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

govMeasurementsSea surface temperature govMeasurementsSea surface temperature ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Sea surface temperature The temperature of sea water near the surface. Categories Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. External Instruments ECMWF : European Centre for Medium Range Weather Forecasts Model Data Field Campaign Instruments ECMWF : European Centre for Medium Range Weather Forecasts Model Data MIRAI : JAMSTEC Research Vessel Mirai

455

ARM - Measurement - Radiative heating rate  

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

govMeasurementsRadiative heating rate govMeasurementsRadiative heating rate ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Radiative heating rate The heating rate due to the divergence of long and shortwave radiative flux. Categories Radiometric, Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. External Instruments MOLTS : Model Output Location Time Series Datastreams MOLTS : Model Output Location Time Series Datastreams MOLTSEDASSNDCLASS1 : Model Output Loc. Time Ser. (MOLTS): EDAS

456

ARM - Measurement - Soil moisture flux  

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

moisture flux moisture flux ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Soil moisture flux A quantity measured according to the formula B = {lambda}(dq/dz), where {lambda} is the conductivity of the soil that the moisture is moving through. Categories Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments CO2FLX : Carbon Dioxide Flux Measurement Systems External Instruments ECMWFDIAG : European Centre for Medium Range Weather Forecasts

457

ARM - Measurement - Soil heat flux  

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

heat flux heat flux ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Soil heat flux A quantity measured according to the formula B = {lambda}(dT/dz), where {lambda} is the conductivity of the soil that the heat is moving through. Categories Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments CO2FLX : Carbon Dioxide Flux Measurement Systems EBBR : Energy Balance Bowen Ratio Station SEBS : Surface Energy Balance System External Instruments

458

measured data | OpenEI  

Open Energy Info (EERE)

measured data measured data Dataset Summary Description A csv with measured data from NREL's Research and Support Facility (RSF) for 2011.The dataset contains hourly data for: - Total Cooling (kW)- Total Heating (kW)- Total Mechanical (kW)- Total Lighting (kW)- Total Plug Loads (kW)- Total Data Center (kW)- Total Building (kW)- PV (kW)- Building Net (kW) Source NREL Date Released February 07th, 2013 (10 months ago) Date Updated Unknown Keywords 2011 measured data NREL RSF Data text/csv icon rsf_measured_data_2011.csv (csv, 470.6 KiB) Quality Metrics Level of Review Some Review Comment Temporal and Spatial Coverage Frequency Time Period License License Open Data Commons Attribution License Comment Rate this dataset Usefulness of the metadata Average vote Your vote Usefulness of the dataset

459

Measured Performance of Selective Glazings  

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

Measured Performance of Selective Glazings Measured Performance of Selective Glazings Title Measured Performance of Selective Glazings Publication Type Conference Paper LBNL Report Number LBL-37747 Year of Publication 1995 Authors Klems, Joseph H., Mehry Yazdanian, and Guy O. Kelley Conference Name Thermal Performance of the Exterior Envelopes of Buildings VI Conference Date Published 12/1995 Conference Location Clearwater Beach, FL Call Number LBL-37747 Abstract Measurements of the net heat flow through four selective glazings in comparison with clear double glazing under late summer outdoor conditions are presented. The solar heat gain coefficient (SHGC) for each glazing is extracted from the data and shown to be angle-dependent. Good agreement is found between measured properties and calculations with WINDOW 4.1.

460

ARM - Measurement - Backscatter depolarization ratio  

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

govMeasurementsBackscatter depolarization ratio govMeasurementsBackscatter depolarization ratio ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Backscatter depolarization ratio The ratio of cross polarized to co-polarized elastic backscatter. Categories Aerosols Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments HSRL : High Spectral Resolution Lidar RL : Raman Lidar Field Campaign Instruments HSRL : High Spectral Resolution Lidar MIRAI : JAMSTEC Research Vessel Mirai MPL-AIR : Micropulse Lidar- Airborne

Note: This page contains sample records for the topic "broadband pyranometer measurements" 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

Integrated Emissivity And Temperature Measurement  

DOE Patents [OSTI]

A multi-channel spectrometer and a light source are used to measure both the emitted and the reflected light from a surface which is at an elevated temperature relative to its environment. In a first method, the temperature of the surface and emissivity in each wavelength is calculated from a knowledge of the spectrum and the measurement of the incident and reflected light. In the second method, the reflected light is measured from a reference surface having a known reflectivity and the same geometry as the surface of interest and the emitted and the reflected light are measured for the surface of interest. These measurements permit the computation of the emissivity in each channel of the spectrometer and the temperature of the surface of interest.

Poulsen, Peter (Livermore, CA)

2005-11-08T23:59:59.000Z

462

Measurement-based quantum repeaters  

E-Print Network [OSTI]

We introduce measurement-based quantum repeaters, where small-scale measurement-based quantum processors are used to perform entanglement purification and entanglement swapping in a long-range quantum communication protocol. In the scheme, pre-prepared entangled states stored at intermediate repeater stations are coupled with incoming photons by simple Bell-measurements, without the need of performing additional quantum gates or measurements. We show how to construct the required resource states, and how to minimize their size. We analyze the performance of the scheme under noise and imperfections, with focus on small-scale implementations involving entangled states of few qubits. We find measurement-based purification protocols with significantly improved noise thresholds. Furthermore we show that already resource states of small size suffice to significantly increase the maximal communication distance. We also discuss possible advantages of our scheme for different set-ups.

Zwerger, M; Briegel, H J

2012-01-01T23:59:59.000Z

463

Specimen coordinate automated measuring machine/fiducial automated measuring machine  

SciTech Connect (OSTI)

The Specimen coordinate Automated Measuring Machine (SCAMM) and the Fiducial Automated Measuring Machine (FAMM) is a computer controlled metrology system capable of measuring length, width, and thickness, and of locating fiducial marks. SCAMM and FAMM have many similarities in their designs, and they can be converted from one to the other without taking them out of the hot cell. Both have means for: supporting a plurality of samples and a standard; controlling the movement of the samples in the +/- X and Y directions; determining the coordinates of the sample; compensating for temperature effects; and verifying the accuracy of the measurements and repeating as necessary. SCAMM and FAMM are designed to be used in hot cells.

Hedglen, Robert E. (Bethel Park, PA); Jacket, Howard S. (Pittsburgh, PA); Schwartz, Allan I. (Turtle Creek, PA)

1991-01-01T23:59:59.000Z

464

Comparison of HEU Measurements Using Measured and Simulated Data  

SciTech Connect (OSTI)

Correlated neutron data analyzed using the Feynman Variance-to-Mean method are can be used to assess the multiplication and mass of special nuclear material (SNM) systems. After list-mode data are acquired, the multiplication and mass can be determined using detector parameters. This work compares data sets that were measured to simulated data using recent MCNP list-mode modifications. In addition, both sets of data are analyzed using both measured and simulated parameters to infer the system multiplication.

Hutchinson, Jesson D. [Los Alamos National Laboratory; Sood, Avneet [Los Alamos National Laboratory; Smith-Nelson, Mark A. [Los Alamos National Laboratory; Dinwiddie, Derek R. [Los Alamos National Laboratory; Myers, William L. [Los Alamos National Laboratory

2012-06-19T23:59:59.000Z

465

Review of air flow measurement techniques  

E-Print Network [OSTI]

static pressure distributions were measured in the duct and HVACstatic pressure distributions were measured in the duct and HVACstatic pressure distributions were measured in the duct and HVAC

McWilliams, Jennifer

2002-01-01T23:59:59.000Z

466

Measurements  

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

Medici√≥n de la carga y el √≠mpetu Medici√≥n de la carga y el √≠mpetu Avanzar Volver Principal ESTOY PERDIDO!!! Una funci√≥n importante del detector es medir la carga y el √≠mpetu de una part√≠cula. Por esta raz√≥n, las partes internas del detector, especialmente el dispositivo de rastreo, est√°n dentro de un fuerte campo magn√©tico. Las se√Īas de las part√≠culas cargadas pueden ser le√≠das f√°cilmente, a partir de sus rastros ya que, en un mismo campo magn√©tico, las part√≠culas positivas y negativas doblan en direcciones opuestas . Se pueden calcular los √≠mpetus de las part√≠culas, dado que las trayectorias de las part√≠culas que tienen mayor √≠mpetu doblan menos que las de aqu√©llas con menor √≠mpetu. Esto es as√≠ porque una part√≠cula con mayor √≠mpetu permanece menos tiempo en el campo magn√©tico o bien tiene

467

Measurement  

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

of the incoming signals from the nine detectors The pulse height peaks correspond to the energy deposited by vertical muons traveling straight through the detectors Katherine...

468

Measurements  

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

radial profile of magnetic field in the Gas-Dynamic Trap using a motional Stark effect diagnostic P. A. Bagryansky, P. P. Deichuli, A. A. Ivanov, S. A. Korepanov, A. A. Lizunov, S....

469

Measurements  

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

magnetic field induced by a turbulent flow of liquid metal a... M. D. Nornberg, E. J. Spence, R. D. Kendrick, C. M. Jacobson, and C. B. Forest b Department of Physics, University...

470

ARM - Measurement - Aerosol optical depth  

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

depth depth ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Aerosol optical depth A measure of how much light aerosols prevent from passing through a column of atmosphere. Categories Aerosols Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments HSRL : High Spectral Resolution Lidar MPL : Micropulse Lidar MFRSR : Multifilter Rotating Shadowband Radiometer NIMFR : Normal Incidence Multifilter Radiometer Field Campaign Instruments AOS-PMFOV : Acoustical Optical Spectrometer-Photometer with Multiple

471

ARM - Measurement - Surface skin temperature  

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

skin temperature skin temperature ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Surface skin temperature The radiative surface skin temperature, from an IR thermometer measuring the narrowband radiating temperature of the ground surface in its field of view. Categories Radiometric, Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments IRT : Infrared Thermometer MFRIRT : Multifilter Radiometer and Infrared Thermometer External Instruments

472

ARM - Measurement - Shortwave narrowband radiance  

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

narrowband radiance narrowband radiance ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Shortwave narrowband radiance A measure of the intrinsic radiant energy flux intensity, at wavelengths between 0.4 and 4 {mu}, emitted by a radiator in a given direction, expressed in units of energy per unit time per unit solid angle. Categories Radiometric Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments CSPHOT : Cimel Sunphotometer SWS : Shortwave Spectroradiometer

473

ARM - Measurement - Aerosol particle size  

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

particle size particle size ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Aerosol particle size Linear size (e.g. radius or diameter) of an aerosol particle. Categories Aerosols Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. Field Campaign Instruments AEROSMASSSPEC : Aerosol Mass Spectrometer CPI : Cloud Particle Imager DRI-GND : Desert Research Institute Ground-Based Aerosol Instruments DRUM-AEROSOL : Drum Aerosol Sampler AEROSOL-TOWER-EML : EML Tower based Aerosol Measurements

474

Viscosity Measurements on Gaseous Propane  

Science Journals Connector (OSTI)

Viscosity Measurements on Gaseous Propane ... However, in that case, the viscosities will have to be re-evaluated too, which also requires the parameters of the wire oscillation, the logarithmic decrement and the frequency. ...

JŲrg Wilhelm; Eckhard Vogel

2001-09-25T23:59:59.000Z

475

Measurements and Characterization (Fact Sheet)  

SciTech Connect (OSTI)

Capabilities fact sheet for the National Center for Photovoltaics: Measurements and Characterization that includes scope, core competencies and capabilities, and contact/web information for Analytical Microscopy, Electro-Optical Characterization, Surface Analysis, and Cell and Module Performance.

Not Available

2011-06-01T23:59:59.000Z

476

Optimal measurements in quantum mechanics  

E-Print Network [OSTI]

Four common optimality criteria for measurements are formulated using relations in the set of observables, and their connections are clarified. As case studies, 1-0 observables, localization observables, and photon counting observables are considered.

T. Heinonen

2005-08-31T23:59:59.000Z

477

Harvard Forest Environmental Measurement Site  

E-Print Network [OSTI]

Harvard University #12;Site Descrip>on · Mixed hardwood and conifer forest · 40Harvard Forest Environmental Measurement Site Petersham, MA Evan Goldman interannual variability and long-term trends in fluxes and forest physiological responses

478

Performance Evaluation and Measurement Plan  

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

Support Contract FY15 Performance Evaluation and Measurement Plan Printed on: December 30, 2014 Mission Support Contract Section J - November 2014 Contract No. DE-AC06-09RL14728...

479

Operations and Maintenance Program Measurement  

Broader source: Energy.gov [DOE]

Operations and maintenance (O&M) measurement tends to focus on reliability as the sole metric. Every Federal agency wants a reliable facility, but this metric alone is not enough to build a...

480

ARM - Measurement - Cloud top height  

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

to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Cloud top height For a given cloud or cloud layer, the highest level of the atmosphere where...

Note: This page contains sample records for the topic "broadband pyranometer measurements" 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

ARM - Measurement - Hydrometeor optical properties  

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

optical properties ARM Data Discovery Browse Data Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Hydrometeor...

482

Thermal Dosimetry and Temperature Measurements  

Science Journals Connector (OSTI)

...Saptem ber 15 and 16, 1978, San Diego, Calif. 2 The abbreviations used are: RF, radiofrequency; LED, light-emitting diode. gross temperature measurement errors when the probes are used to monitor tissue or phantom material in an electromag...

D. A. Christensen

1979-06-01T23:59:59.000Z

483

Thermal influences on the activity and energetics of yellow bellied marmots (Marmota flaviventris)  

E-Print Network [OSTI]

intraperitoneally in animals anesthetized with Ketaset (ketamine hydrochloride, 1.0 mg/mL) at a dosage of 1 mL/kg diluted 1:1 with sterile physiological saline. Animals were generally re≠ leased the day following surgery and behaved normally upon release. Re...) except during 1981 when equipment was available to con≠ currently record only solar radiation (Qso\\); other variables were measured on days when animals were not being observed. Solar radiation was mea≠ sured with a Licor LI-200S pyranometer sensitive...

Armitage, Kenneth

1990-01-01T23:59:59.000Z

484

Informational power of quantum measurements  

SciTech Connect (OSTI)

We introduce the informational power of a quantum measurement as the maximum amount of classical information that the measurement can extract from any ensemble of quantum states. We prove the additivity by showing that the informational power corresponds to the classical capacity of a quantum-classical channel. We restate the problem of evaluating the informational power as the maximization of the accessible information of a suitable ensemble. We provide a numerical algorithm to find an optimal ensemble and quantify the informational power.

Dall'Arno, Michele; D'Ariano, Giacomo Mauro [Quit Group, Dipartimento di Fisica 'A. Volta', via A. Bassi 6, I-27100 Pavia (Italy); Istituto Nazionale di Fisica Nucleare, Gruppo IV, via A. Bassi 6, I-27100 Pavia (Italy); Sacchi, Massimiliano F. [Quit Group, Dipartimento di Fisica 'A. Volta', via A. Bassi 6, I-27100 Pavia (Italy); Istituto di Fotonica e Nanotecnologie (INF-CNR), Piazza Leonardo da Vinci 32, I-20133, Milano (Italy)

2011-06-15T23:59:59.000Z

485

Measuring Solar Abundances with Seismology  

E-Print Network [OSTI]

The revision of the photospheric abundances proferred by Asplund et al has rendered opacity theory inconsistent with the seismologically determined opacity through the Sun. This highlights the need for a direct seismological measurement of solar abundances. Here we describe the technique used to measure abundances with seismology, examine our ability to detect differences between solar models using this technique, and discuss its application in the Sun.

Katie Mussack; Douglas Gough

2008-10-15T23:59:59.000Z

486

R Measurements at High Q^2  

E-Print Network [OSTI]

Previous Measurements of R at high Q^2 are reviewed. Recent R measurement results, including those from the Beijing Spectrometer Experiment, are described. The present status of R measurements and future measurement possiblities are summarized.

F. A. Harris

2001-06-01T23:59:59.000Z

487

Interoperability testing for shop floor measurement  

Science Journals Connector (OSTI)

Manufactured parts are typically measured to ensure quality. Measurement involves equipment and software from many different vendors, and interoperability is a major problem faced by manufacturers. The I++ Dimensional Measuring Equipment (DME) specification ... Keywords: interoperability, measurement, software testing

Fred Proctor; Bill Rippey; John Horst; Joe Falco; Tom Kramer

2007-08-01T23:59:59.000Z

488

Acoustic Building Infiltration Measurement System (ABIMS)  

Broader source: Energy.gov [DOE]

The Acoustic Building Infilitration Measurement System project is developing an acoustic method of measuring the infiltration of a building envelope.

489

SOME PROPERTIES OF PATH MEASURES CHRISTIAN LEONARD  

E-Print Network [OSTI]

SOME PROPERTIES OF PATH MEASURES CHRISTIAN L¬īEONARD Abstract. We call any measure on a path space, a path measure. Some notions about path measures which appear naturally when solving the Schr of an unbounded path measure 3 2. Relative entropy with respect to an unbounded measure 7 3. Positive integration

Paris-Sud XI, Université de

490

Entanglement cost of generalised measurements  

E-Print Network [OSTI]

Bipartite entanglement is one of the fundamental quantifiable resources of quantum information theory. We propose a new application of this resource to the theory of quantum measurements. According to Naimark's theorem any rank 1 generalised measurement (POVM) M may be represented as a von Neumann measurement in an extended (tensor product) space of the system plus ancilla. By considering a suitable average of the entanglements of these measurement directions and minimising over all Naimark extensions, we define a notion of entanglement cost E_min(M) of M. We give a constructive means of characterising all Naimark extensions of a given POVM. We identify various classes of POVMs with zero and non-zero cost and explicitly characterise all POVMs in 2 dimensions having zero cost. We prove a constant upper bound on the entanglement cost of any POVM in any dimension. Hence the asymptotic entanglement cost (i.e. the large n limit of the cost of n applications of M, divided by n) is zero for all POVMs. The trine measurement is defined by three rank 1 elements, with directions symmetrically placed around a great circle on the Bloch sphere. We give an analytic expression for its entanglement cost. Defining a normalised cost of any d-dimensional POVM by E_min(M)/log(d), we show (using a combination of analytic and numerical techniques) that the trine measurement is more costly than any other POVM with d>2, or with d=2 and ancilla dimension 2. This strongly suggests that the trine measurement is the most costly of all POVMs.

Richard Jozsa; Masato Koashi; Noah Linden; Sandu Popescu; Stuart Presnell; Dan Shepherd; Andreas Winter

2003-03-27T23:59:59.000Z

491

Super Luminescent Diode with a Fabry-Perot Etalon for Measurement of CO2 and C2H2 in a Gas Mixture  

Science Journals Connector (OSTI)

Mixed gas sensing based on a broad-band super-luminescent diode (1535 nm) coupled with an external Fabry-Perot etalon for C2H2 and CO2 is proposed and demonstrated. The wavelength...

Karuppusamy, Sulochana; R Yellu, Anand; J Vasa, Nilesh; K, Akash

492

Non-doubling Ahlfors measures, Perimeter measures, and the ...  

E-Print Network [OSTI]

The X-perimeter of a C1,1 domain is an upper 1-Ahlfors measure. 39 ... Failure of the 1-Ahlfors condition for the X-perimeter of C1,? domains 55. Chapter 7. ...... + mr the topological dimension of G. The notation {ej,1, ..., ej,mj }, j = 1, ..., r, will.

2005-11-29T23:59:59.000Z

493

Final Detailed Measurement Program Plan Detailed Measurement Program Plan  

E-Print Network [OSTI]

by TrueWind Solutions, LLC Albany, New York for California Energy Commission Sacramento, California was developed by TrueWind Solutions, hereon referred to as TrueWind, to guide Task 4 of the Wind Energy Resource Modeling and Measurement Project, contact number 500-03-006, with the California Energy Commission

494

ARM - Measurement - Hydrometeor Size Distribution  

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

Size Distribution Size Distribution ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Hydrometeor Size Distribution The number of hydrometeors observed in a given size range. Categories Cloud Properties, Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments LDIS : Laser Disdrometer Datastreams LDIS : Laser Disdrometer Datastreams PARS2 : OTT Parsivel2 Laser Disdrometer VDIS : Video Disdrometer Datastreams VDIS : Video Disdrometer Drop Size Distribution

495

ARM - Measurement - Cloud ice particle  

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

ice particle ice particle ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Cloud ice particle Particles made of ice found in clouds. Categories Cloud Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments MET : Surface Meteorological Instrumentation Field Campaign Instruments REPLICATOR : Balloon-borne Ice Crystal Replicator CPI : Cloud Particle Imager CVI-AIR : Counterflow Virtual Impactor LEARJET : Lear Jet PARTIMG : Particle imager UAV-PROTEUS-MICRO : Proteus Cloud Microphysics Instruments

496

ARM - Measurement - Particle size distribution  

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

size distribution size distribution ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Particle size distribution The number of particles present in any given volume of air within a specified size range. Categories Aerosols Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AOS : Aerosol Observing System CSPHOT : Cimel Sunphotometer TDMA : Tandem Differential Mobility Analyzer UHSAS : Ultra-High Sensitivity Aerosol Spectrometer Field Campaign Instruments

497

ARM - Measurement - Total cloud water  

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

cloud water cloud water ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Total cloud water The total concentration (mass/vol) of ice and liquid water particles in a cloud; this includes condensed water content (CWC). Categories Cloud Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. External Instruments NCEPGFS : National Centers for Environment Prediction Global Forecast System Field Campaign Instruments CSI : Cloud Spectrometer and Impactor PDI : Phase Doppler Interferometer

498

ARM - Measurement - Hydrometeor fall velocity  

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

fall velocity fall velocity ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Hydrometeor fall velocity Fall velocity of hydrometeors (e.g. rain, snow, graupel, hail). Categories Cloud Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments DISDROMETER : Impact Disdrometer LDIS : Laser Disdrometer WSACR : Scanning ARM Cloud Radar, tuned to W-Band (95GHz) Field Campaign Instruments DISDROMETER : Impact Disdrometer PDI : Phase Doppler Interferometer

499

ARM - Measurement - Cloud condensation nuclei  

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

condensation nuclei condensation nuclei ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Cloud condensation nuclei Small particles (typically 0.0002 mm, or 1/100 th the size of a cloud droplet) about which cloud droplets coalesce. Categories Aerosols, Cloud Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AOS : Aerosol Observing System CCN : Cloud Condensation Nuclei Particle Counter Field Campaign Instruments AOS : Aerosol Observing System

500

ARM - Measurement - Longwave spectral radiance  

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

spectral radiance spectral radiance ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Longwave spectral radiance The rate at which the spectrally resolved radiant energy in the longwave portion of the spectrum is emitted in a particular direction per unit area perpendicular to the direction of radiation. Categories Radiometric Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AERI : Atmospheric Emitted Radiance Interferometer ASSIST : Atmospheric Sounder Spectrometer for Infrared Spectral