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Note: This page contains sample records for the topic "reflection radiometer aster" from the National Library of EnergyBeta (NLEBeta).
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1

Asters  

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

Asters Asters Nature Bulletin No. 431-A October 30, 1971 Forest Preserve District of Cook County George W. Dunne, President Roland F. Eisenbeis, Supt. of Conservation ASTERS One of the charms of our American autumn is the profusion of asters that decorate the landscape from late August until the killing frosts of October or November. Some kinds, last wildflowers of the dying year, are still blooming when even the goldenrods are gone. Some are white; a few are pinkish; others range in color from pale blue to purple. They are very hardy but people who gather armloads of asters are disappointed to find that they close up and lose their beauty almost as soon as picked. The asters belong to that largest of all plant families, the Composites, which includes such common flowers as goldenrods, daisies, sunflowers, thistles and dandelions. The name aster, from the Latin and Greek word meaning "star", was given them because the flower head has a showy ring of rays or florets -- similar to those of a daisy, sunflower and chicory -- around a yellow center that turns reddish or purplish brown with age. Almost all are perennials. Each tiny seed has a short tuft of fuzz by which it is carried away in the wind.

2

Preflight and In-Flight Calibration Plan for ASTER  

Science Conference Proceedings (OSTI)

Preflight and in-flight radiometric calibration plans are described for the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) that is a multispectral optical imager of high spatial resolution. It is designed for the remote ...

A. Ono; F. Sakuma; K. Arai; Y. Yamaguchi; H. Fujisada; P. N. Slater; K. J. Thome; F. D. Palluconi; H. H. Kieffer

1996-04-01T23:59:59.000Z

3

A logit model for predicting wetland location using ASTER and GIS  

Science Conference Proceedings (OSTI)

Data from the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) were used to develop a logistic regression model to predict the location of wetlands in the Coastal Plain of Virginia. We used the first five bands from two ASTER scenes ...

E. Pantaleoni; R. H. Wynne; J. M. Galbraith; J. B. Campbell

2009-01-01T23:59:59.000Z

4

Tir (Aster) Geothermal Anomalies | Open Energy Information  

Open Energy Info (EERE)

Tir (Aster) Geothermal Anomalies Tir (Aster) Geothermal Anomalies Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Tir (Aster) Geothermal Anomalies Details Activities (1) Areas (1) Regions (0) Abstract: The focus of this research is the detection of shallow thermal anomalies for geothermal exploration and field management. The objective of this paper is to outline the steps involved in applying thermal infrared imagery (TIR) for this task. This process is part of an ongoing project at the Energy & Geoscience Institute (EGI), where we are developing a methodology to use daytime and nighttime thermal infrared imagery produced by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) to map shallow thermal anomalies. Kinetic temperature images

5

Evaluation of Surface Temperature and Emissivity Derived from ASTER Data: A Case Study Using Ground-Based Measurements at a Volcanic Site  

Science Conference Proceedings (OSTI)

The land surface temperature (LST) and emissivity (LSE) derived from Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) data were evaluated in a low spectral contrast volcanic site at an altitude of 2000 m on the island of ...

África Barreto; Manuel Arbelo; Pedro A. Hernández-Leal; Laia Núñez-Casillas; María Mira; César Coll

2010-10-01T23:59:59.000Z

6

Combined SWIR and LWIR Mineral Mapping Using MASTER/ASTER | Open Energy  

Open Energy Info (EERE)

SWIR and LWIR Mineral Mapping Using MASTER/ASTER SWIR and LWIR Mineral Mapping Using MASTER/ASTER Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Combined SWIR and LWIR Mineral Mapping Using MASTER/ASTER Details Activities (1) Areas (1) Regions (0) Abstract: This research uses multispectral short-waveinfrared (SWIR) and long-wave-infrared (LWIR) remote sensing to map mineralogy associated with hot springs and epithermal mineral deposits. Selected sites around the world covering a range of active/inactive hot springs and deposit types are being studied using the ODIS/ASTER airborne simulator (MASTER) and the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER). MASTER and ASTER data analysis contribute to mineral mapping in the VNIR/SWIR, however, their main contribution is improved mapping of

7

Geothermal Exploration in Eastern California Using Aster Thermal Infrared  

Open Energy Info (EERE)

in Eastern California Using Aster Thermal Infrared in Eastern California Using Aster Thermal Infrared Data Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Geothermal Exploration in Eastern California Using Aster Thermal Infrared Data Abstract Remote sensing is a cost-effective tool that can be used to cover large areas for the purpose of geothermal exploration. A particular application is the use of satellite thermal infrared (TIR) imagery from the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) instrument aboard an orbiting satellite. It can be used to search remotely for elevated surface temperatures, which may be associated with geothermal resources. The study region is in the central part of eastern California, with emphasis on the Coso geothermal field. Nighttime scenes are most

8

Remote Detection of Quaternary Borate Deposits with ASTER Satellite Imagery  

Open Energy Info (EERE)

Remote Detection of Quaternary Borate Deposits with ASTER Satellite Imagery Remote Detection of Quaternary Borate Deposits with ASTER Satellite Imagery as a Geothermal Exploration Tool Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Remote Detection of Quaternary Borate Deposits with ASTER Satellite Imagery as a Geothermal Exploration Tool Abstract In the Great Basin of the western United States, geothermal fluids are sometimes associated with surface crusts of borate evaporite minerals. These borates can therefore potentially serve as a geothermal exploration tool if they can be efficiently identified and mapped in the field. We demonstrate the effectiveness of using a field-portable ASD Fieldspec® spectroradiometer, and satellite-based Advanced Spaceborne Thermal and Emitted Reflectance Radiometer (ASTER) imagery for mapping borate minerals

9

Wind Speed Effects on Sea Surface Emission and Reflection for the Along Track Scanning Radiometer  

Science Conference Proceedings (OSTI)

The emission and reflection properties of a rough sea surface are investigated, with particular emphasis on the wavelengths and viewing geometry relevant to the Along Track Scanning Radiometer. The authors start from Fresnel's equations for a ...

Philip D. Watts; Myles R. Allen; Timothy J. Nightingale

1996-02-01T23:59:59.000Z

10

Neural Network and Multiple Linear Regression for Estimating Surface Albedo from ASTER Visible and Near-Infrared Spectral Bands  

Science Conference Proceedings (OSTI)

The current Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER)-based broadband albedo model requires shortwave infrared bands 5 (2.145–2.185 nm), 6 (2.185–2.225 nm), 8 (2.295–2.365 nm), and 9 (2.360–2.430 nm) and visible/near-...

Mohammad H. Mokhtari; Ibrahim Busu; Hossein Mokhtari; Gholamreza Zahedi; Leila Sheikhattar; Mohammad A. Movahed

2013-04-01T23:59:59.000Z

11

The Aster's Hoity-Toity Belt  

E-Print Network (OSTI)

the little ones, and was often heard to roar with laughter when one of them particularly tickled him in the sky space. Lady Aster said that it was important that the family receive the respect and admiration of the Aster's space in the Solar System. She traveled way out to the far regions of the Aster's realm. Dawn

12

Radiometer Calibration Trends  

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

Radiometer Calibration Trends S. M. Wilcox, T. L. Stoffel, and D. R. Myers National Renewable Energy Laboratory Golden, Colorado Abstract Calibrations of Atmospheric Radiation...

13

DRAFT Microwave Radiometer Profiler Handbook  

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

Microwave Radiometer Profiler Handbook Evaluation of a New Multi-Frequency Microwave Radiometer for Measuring the Vertical Distribution of Temperature, Water Vapor, and Cloud...

14

The NCAR Atmosphere-Surface Turbulent Exchange Research (ASTER) Facility  

Science Conference Proceedings (OSTI)

The Atmosphere-Surface Turbulent Exchange Research (ASTER) facility developed at the National Center for Atmospheric Research (NCAR) will support observational research on the structure of the atmospheric surface layer. ASTER will provide state-...

J. A. Businger; W. F. Dabberdt; A. C. Delany; T. W. Horst; C. L. Martin; S. P. Oncley; S. R. Semmer

1990-07-01T23:59:59.000Z

15

Microwave Radiometer (MWR) Handbook  

SciTech Connect

The Microwave Radiometer (MWR) provides time-series measurements of column-integrated amounts of water vapor and liquid water. The instrument itself is essentially a sensitive microwave receiver. That is, it is tuned to measure the microwave emissions of the vapor and liquid water molecules in the atmosphere at specific frequencies.

Morris, VR

2006-08-01T23:59:59.000Z

16

Loss-compensated radiometer  

SciTech Connect

A new radiometer concept is described and evaluated. Automatic dynamic electrical compensation is achieved by a high-gain feedback amplifier and low thermal inertia solar and compensating electrical sensors. With sufficiently high gain, compensation can increase accuracy to limits determined by amplifier drift. Equations governing instrument response are derived and analyzed. Initial measurements on a preliminary prototype confirm the validity of the concept which should yield a very accurate instrument with ''self calibrating'' features.

Lobo, P.C.

1984-05-01T23:59:59.000Z

17

Remote Detection Of Quaternary Borate Deposits With Aster Satellite Imagery  

Open Energy Info (EERE)

Of Quaternary Borate Deposits With Aster Satellite Imagery Of Quaternary Borate Deposits With Aster Satellite Imagery As A Geothermal Exploration Tool Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Remote Detection Of Quaternary Borate Deposits With Aster Satellite Imagery As A Geothermal Exploration Tool Details Activities (2) Areas (2) Regions (0) Abstract: Unavailable Author(s): C. Kratt, M. Coolbaugh, Wendy Calvin Published: GRC, 2006 Document Number: Unavailable DOI: Unavailable Multispectral Imaging At Rhodes Marsh Area (Kratt, Et Al., 2006) Multispectral Imaging At Teels Marsh Area (Kratt, Et Al., 2006) Rhodes Marsh Geothermal Area Teels Marsh Geothermal Area Retrieved from "http://en.openei.org/w/index.php?title=Remote_Detection_Of_Quaternary_Borate_Deposits_With_Aster_Satellite_Imagery_As_A_Geothermal_Exploration_Tool&oldid=389959

18

Geothermal Exploration in Eastern California Using Aster Thermal...  

Open Energy Info (EERE)

Geothermal Exploration in Eastern California Using Aster Thermal Infrared Data Abstract Remote sensing is a cost-effective tool that can be used to cover large areas for the...

19

Analysis Of Hot Springs And Associated Deposits In Yellowstone...  

Open Energy Info (EERE)

edit Details Activities (6) Areas (1) Regions (0) Abstract: The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) and the Airborne VisibleIR Image...

20

The Enhanced NOAA Global Land Dataset from the Advanced Very High Resolution Radiometer  

Science Conference Proceedings (OSTI)

Global mapped data of reflected radiation in the visible (0.63 ?m) and near-infrared (0.85 ?m) wavebands of the Advanced Very High Resolution Radiometer (AVHRR) onboard National Oceanic and Atmospheric Administration satellites have been ...

Garik Gutman; Dan Tarpley; Aleksandr Ignatov; Steve Olson

1995-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "reflection radiometer aster" 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

Lighting Research Group: Facilities: Spectro-Radiometer  

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

Spectro-Radiometer Spectro-Radiometer Spectro-Radiometer spectro-radiometer Gonio-photometer | Integrating sphere | Power analyzer | Spectro-radiometer The spectro-radiometer is used to measure the light output of a light source at each wavelength. The part that looks like a video camera (to the far right in the picture) can look at each wavelength separately. The spectro-radiometer can also be used as a standard light meter and measure all visible wavelengths at once to obtain the total light output of a source. The console portion of the spectro-radiometer is used to display the meter readings and also to adjust measurement settings like the sensitivity. The computer is interfaced with the spectro-radiometer and is used to send commands to the machine and receive, store, and analyze the data.

22

GLACIER MONITORING FROM ASTER IMAGERY: ACCURACY AND APPLICATIONS  

E-Print Network (OSTI)

@geo.unizh.ch, www.geo.unizh.ch/~kaeaeb 2. U.S. Geological Survey, 2255 N. Gemini Drive, Flagstaff, AZ 86001, U.S.A., www.glims.org 3. National Snow and Ice Data Center, University of Colorado, 449 UCB, Boulder, CO 80309) an automatic DEM from ASTER data is compared to one derived from aerial photogrammetry. Such DEMs

Oldenburg, Carl von Ossietzky Universität

23

Calibration Service for Low-level Pulsed-Laser Radiometers ...  

Science Conference Proceedings (OSTI)

... be noted that not all pulse energies or peak ... both the peak-power and pulse-energy radiometers ... a single radiometer has not been reserved for NIST ...

2012-10-31T23:59:59.000Z

24

Narrowband to Broadband Conversion with Spatially Autocorrelated Reflectance Measurements  

Science Conference Proceedings (OSTI)

A new technique for estimating broadband reflectance from Advanced Very High-Resolution Radiometer (AVHRR) narrowband reflectances in channel 1 and 2 is developed. The data used are simultaneous and coincident narrowband and broadband ...

Zhanqing Li; H. G. Leighton

1992-05-01T23:59:59.000Z

25

A Field Comparison among a Domeless Net Radiometer, Two Four-Component Net Radiometers, and a Domed Net Radiometer  

Science Conference Proceedings (OSTI)

The Kipp & Zonen NR-Lite is a newly designed domeless net radiometer. In preparation for the Oklahoma Atmospheric Surface-layer Instrumentation System (OASIS) Project, the NR-Lite was rigorously field tested for over eight months during 1998. ...

J. A. Brotzge; C. E. Duchon

2000-12-01T23:59:59.000Z

26

Microwave Radiometer-High Frequency (MWRHF) Handbook  

SciTech Connect

The 90/150-GHz Vapor Radiometer provides time-series measurements of brightness temperatures from two channels centered at 90 and 150 GHz. These two channels are sensitive to the presence of liquid water and precipitable water vapor.

Caddedu, MP

2011-03-17T23:59:59.000Z

27

Solid-State Radiometer Measurements of Sea Surface Skin Temperature  

Science Conference Proceedings (OSTI)

Satellite sea surface skin temperature (SSST) maps are readily available from precisely calibrated radiometer systems such as the ERS along-track scanning radiometer and, in the near future, from the moderate-resolution imaging spectroradiometer. ...

C. J. Donlon; S. J. Keogh; D. J. Baldwin; I. S. Robinson; I. Ridley; T. Sheasby; I. J. Barton; E. F. Bradley; T. J. Nightingale; W. Emery

1998-06-01T23:59:59.000Z

28

Ground-Based Microwave Radiometer Measurements  

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

Ground-Based Microwave Radiometer Measurements Ground-Based Microwave Radiometer Measurements and Radiosonde Comparisons During the WVIOP2000 Field Experiment D. Cimini University of L'Aquila L'Aquil, Italy E. R. Westwater Cooperative Institute for Research in the Environmental Sciences University of Colorado National Oceanic and Atmospheric Administration Environmental Technology Laboratory Boulder, Colorado Y. Han Science System Applications National Aeronautics Space Administration Goddard Space Flight Center Greenbelt, Maryland S. Keihm Jet Propulsion Laboratory California Institute of Technology Pasadena, California Introduction During September to October 2000, a water vapor intensive operational period (WVIOP) was conducted at the Atmospheric Radiation Measurement (ARM) Program's Southern Great Plains (SGP) Cloud and

29

ARM's Broadband Radiometer Station (BRS) Data  

DOE Data Explorer (OSTI)

ARM's BRS data contains measurements of broadband shortwave and longwave, downwelling, upwelling, and normal radiation. The Broadband Radiometer Station (BRS) has collected data since 2001. Data Plots can be viewed for the BRS datastream through ARM's Thumbnail Browser. The primary site for BRS data collection is the Southern Great Plains (SGP).

30

Using Sun Glint to Check the Relative Calibration of Reflected Spectral Radiances  

Science Conference Proceedings (OSTI)

Observations of sunlight reflected from regions of sun glint are used to check the relative calibration of spectral radiances obtained with imaging radiometers. Reflectances at different wavelengths for sun-glint regions are linearly related. ...

Gunnar Luderer; James A. Coakley Jr.; William R. Tahnk

2005-10-01T23:59:59.000Z

31

Near-surface air temperature estimation from ASTER data based on neural network algorithm  

Science Conference Proceedings (OSTI)

An algorithm based on the radiance transfer model (MODTRAN4) and a dynamic learning neural network for estimation of near-surface air temperature from ASTER data are developed in this paper. MODTRAN4 is used to simulate radiance transfer from the ground ...

K. B. Mao; H. J. Tang; X. F. Wang; Q. B. Zhou; D. L. Wang

2008-10-01T23:59:59.000Z

32

Spectral properties and reflectance curves of the revealed volcanic rocks in Syria using radiometric measurements  

Science Conference Proceedings (OSTI)

This research aimed at studying the spectral reflectance intensity of different exposed volcanic rocks in Syria, and drawing their curves by radiometer measurements. In order to reach this goal, we have studied different kinds of volcanic rocks related ...

M. Rukieh; A. M. Al-Kafri; A. W. Khalaf

2007-07-01T23:59:59.000Z

33

A Multichannel Cloud Pyranometer System for Airborne Measurement of Solar Spectral Reflectance by Clouds  

Science Conference Proceedings (OSTI)

The design and performance of a spectral radiometer system are described for airborne measurements of solar flux reflectance by clouds. The system consists of a pair of identical multichannel pyranometers: one installed on the top and the other ...

Shoji Asano; Masataka Shiobara; Yuji Nakanishi; Yukiharu Miyake

1995-06-01T23:59:59.000Z

34

Regional and Seasonal Variations of Surface Reflectance from Satellite Observations at 0.6 ?m  

Science Conference Proceedings (OSTI)

A global series of seasonal visible surface reflectance maps derived from NOAA-5 Scanning Radiometer observations is presented. Methods for isolating clear-sky observations from satellite data are evaluated and the magnitude of atmospheric ...

Elaine Matthews; William B. Rossow

1987-01-01T23:59:59.000Z

35

ARM: Broadband Radiometer Station (BRS) broadband shortwave and longwave 1-min radiation data with Dutton correction  

DOE Data Explorer (OSTI)

Broadband Radiometer Station (BRS) broadband shortwave and longwave 1-min radiation data with Dutton correction

Tom Stoffel; Bev Kay; Aron Habte; Mary Anderberg; Mark Kutchenreiter

36

ARM: Microwave Radiometer data (MWR Profiles - QME), water vapor, temp, cloud liquid water, precip water retrievals  

DOE Data Explorer (OSTI)

Microwave Radiometer data (MWR Profiles - QME), water vapor, temp, cloud liquid water, precip water retrievals

Maria Cadeddu

37

Validation of Geolocation of Measurements of the Clouds and the Earth’s Radiant Energy System (CERES) Scanning Radiometers aboard Three Spacecraft  

Science Conference Proceedings (OSTI)

The Clouds and the Earth’s Radiant Energy System (CERES) instrument is a scanning radiometer for measuring Earth-emitted and -reflected solar radiation to understand Earth’s energy balance. One CERES instrument was placed into orbit aboard the ...

G. Louis Smith; Kory J. Priestley; Phillip C. Hess; Chris Currey; Peter Spence

2009-11-01T23:59:59.000Z

38

Accurate Airborne Surface Temperature Measurements with Chopper-stabilized Radiometers  

Science Conference Proceedings (OSTI)

The accuracy of chopper-stabilized radiometers for the meteorological measurement of surface temperatures was investigated during a series of airborne trails, including tests at high altitude using a pressurized aircraft. The significant finding ...

Dieter Lorenz

1991-06-01T23:59:59.000Z

39

Field Performance of a Spinning-Reflector Microwave Radiometer  

Science Conference Proceedings (OSTI)

In the winter of 1986, two microwave radiometers were operated side by side at a high-altitude weather observation site in the central Sierra Nevada for the purpose of comparing measurements in a variety of ambient weather conditions. The ...

Belay B. Demoz; Arlen W. Huggins; Joseph A. Warburton; Richard L. Smith

1993-06-01T23:59:59.000Z

40

Comparison of Scatterometer and Radiometer Wind Vector Measurements  

Science Conference Proceedings (OSTI)

Coincident measurements with a 37-GHz polarimetric radiometer and a 10-GHz scatterometer during the Coastal Ocean Probing Experiment (COPE) in September and October of 1995 offered a unique opportunity to compare their relative sensitivity and ...

David E. Weissman; William J. Plant; William C. Keller; Vladimir G. Irisov

2002-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "reflection radiometer aster" 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

Temperature Profiling with Neural Network Inversion of Microwave Radiometer Data  

Science Conference Proceedings (OSTI)

A neural network is used to obtain vertical profiles of temperature from microwave radiometer data. The overall rms error in the retrieved profiles of a test dataset was only about 8% worse than the overall error using an optimized statistical ...

James H. Churnside; Thomas A. Stermitz; Judith A. Schroeder

1994-02-01T23:59:59.000Z

42

Comparison of Plotting Methods for Solar Radiometer Calibration  

Science Conference Proceedings (OSTI)

An alternative formulation of the Langley plot relating observed solar irradiance, extraterrestrial solar irradiance, and air mass has been suggested to potentially improve radiometer calibration accuracy. In this study, results from the ...

S. M. Adler-Golden; J. R. Slusser

2007-05-01T23:59:59.000Z

43

A Comparison of Columnar Water Vapor Retrievals Obtained with Near-IR Solar Radiometer and Microwave Radiometer Measurements  

Science Conference Proceedings (OSTI)

A simple two-channel solar radiometer and analysis technique have been developed for setting atmospheric water vapor via differential solar transmission measurements in and adjacent to the 940-nm water vapor absorption band. A prototype solar ...

J. Reagan; K. Thome; B. Herman; R. Stone; J. DeLuisi; J. Snider

1995-06-01T23:59:59.000Z

44

Multifilter Rotating Shadowband Radiometer (MFRSR) Handbook  

SciTech Connect

The visible Multifilter Rotating Shadowband Radiometer (MFRSR) is a passive instrument that measures global and diffuse components of solar irradiance at six narrowband channels and one open, or broadband, channel (Harrison et al. 1994). Direct irradiance is not a primary measurement, but is calculated using the diffuse and global measurements. To collect one data record, the MFRSR takes measurements at four different shadowband positions. The first measurement is taken with the shadowband in the nadir (home) position. The next three measurements are, in order, the first side-band, sun-blocked, and second side-band. The side-band measurements are used to correct for the portion of the sky obscured by the shadowband. The nominal wavelengths of the narrowband channels are 415, 500, 615, 673, 870, and 940 nm. From such measurements, one may infer the atmosphere's aerosol optical depth at each wavelength. In turn, these optical depths may be used to derive information about the column abundances of ozone and water vapor (Michalsky et al. 1995), as well as aerosol (Harrison and Michalsky 1994) and other atmospheric constituents.

Hodges, GB; Michalsky, JJ

2011-02-07T23:59:59.000Z

45

Getting DEM from ASTER (~30m resolution) + importing it into ArcMap + georeferencing an image on top (e.g. satellite image, geological map)  

E-Print Network (OSTI)

in the "Search Term" bar: type "ASTER GDEM" and the "ASTER Global Digital Elevation Model V002" will appear in the "Select Datasets" window at the bottom. Then, select the zone of interest in the "Spatial Search" window click once on the bar next to "Bounding Box" and a window will appear in which you can enter

46

Estimation of Surface Energy Balance from Radiant Surface Temperature and NOAA AVHRR Sensor Reflectances over Agricultural and Native Vegetation  

Science Conference Proceedings (OSTI)

A model is developed to evaluate surface heat flux densities using the radiant surface temperature and red and near-infrared reflectances from the NOAA Advanced Very High Resolution Radiometer sensor. Net radiation is calculated from an empirical ...

Huang Xinmei; T. J. Lyons; R. C. G. Smith; J. M. Hacker; P. Schwerdtfeger

1993-08-01T23:59:59.000Z

47

An Infrared Sea Surface Temperature Autonomous Radiometer (ISAR) for Deployment aboard Volunteer Observing Ships (VOS)  

Science Conference Proceedings (OSTI)

The infrared SST autonomous radiometer (ISAR) is a self-calibrating instrument capable of measuring in situ sea surface skin temperature (SSTskin) to an accuracy of 0.1 K. Extensive field deployments alongside two independent research radiometers ...

C. Donlon; I. S. Robinson; W. Wimmer; G. Fisher; M. Reynolds; R. Edwards; T. J. Nightingale

2008-01-01T23:59:59.000Z

48

Improved Retrieval of Integrated Water Vapor from Water Vapor Radiometer Measurements Using Numerical Weather Prediction Models  

Science Conference Proceedings (OSTI)

Water vapor radiometer (WVR) retrieval algorithms require a priori information on atmospheric conditions along the line of sight of the radiometer in order to derive opacities from observed brightness temperatures. This paper's focus is the mean ...

Steven R. Chiswell; Steven Businger; Michael Bevis; Fredrick Solheim; Christian Rocken; Randolph Ware

1994-10-01T23:59:59.000Z

49

Quantitative Measurements of Path-Integrated Rain Rate by an Airborne Microwave Radiometer over the Ocean  

Science Conference Proceedings (OSTI)

Data on the airborne microwave radiometer, which is one of the sensors of the airborne microwave rain-scatterometer/radiometer (AMRS) system, are analyzed to infer path-integrated rain rate measured from topside. The equation of radiative ...

Masaharu Fujita; Ken'ichi Okamoto; Harunobu Masuko; Takeyuki Ojima; Nobuyoshi Fugono

1985-09-01T23:59:59.000Z

50

The Miami2001 Infrared Radiometer Calibration and Intercomparison. Part II: Shipboard Results  

Science Conference Proceedings (OSTI)

The second calibration and intercomparison of infrared radiometers (Miami2001) was held at the University of Miami's Rosenstiel School of Marine and Atmospheric Science (RSMAS) during a workshop held from May to June 2001. The radiometers ...

I. J. Barton; P. J. Minnett; K. A. Maillet; C. J. Donlon; S. J. Hook; A. T. Jessup; T. J. Nightingale

2004-02-01T23:59:59.000Z

51

A High Speed Spectrally Scanning Radiometer (SPERAD) for Airborne Measurements of Cloud Optical Properties  

Science Conference Proceedings (OSTI)

The overall design of a radiometer and data acquisition system for use on an aircraft platform is described. The instrument is a fast response spectrally scanning radiometer providing measurements at 48 spectral intervals between 400 and 1200 nm. ...

Graeme L. Stephens; John C. Scott

1985-06-01T23:59:59.000Z

52

Design and Performance Analysis of an Automated 10-Channel Solar Radiometer Instrument  

Science Conference Proceedings (OSTI)

An automated multichannel solar radiometer has been designed and fabricated by the Atmospheric Remote Sensing Laboratory at The University of Arizona. The automated radiometer has 10 separate silicon-photodiode-based channels that allow near-...

A. R. Ehsani; J. A. Reagan; W. H. Erxleben

1998-06-01T23:59:59.000Z

53

NREL: MIDC/ARM Radiometer Characterization System (36.606 N,...  

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

The Measurement and Instrumentation Data Center collects Irradiance and Meterological data from the ARM Radiometer Characterization System....

54

Microwave Radiometer – 3 Channel (MWR3C) Handbook  

SciTech Connect

The microwave radiometer 3-channel (MWR3C) provides time-series measurements of brightness temperatures from three channels centered at 23.834, 30, and 89 GHz. These three channels are sensitive to the presence of liquid water and precipitable water vapor.

Cadeddu, MP

2012-05-04T23:59:59.000Z

55

Scanning multichannel microwave radiometer snow water equivalent assimilation  

E-Print Network (OSTI)

climatic driver through the surface albedo's role in energy and water budgets [e.g., Yeh et al., 1983Scanning multichannel microwave radiometer snow water equivalent assimilation Jiarui Dong,1 due to complicating effects, including distance to open water, presence of wet snow, and presence

Houser, Paul R.

56

Microwave Radiometer Calibration on Decadal Time Scales Using On-Earth Brightness Temperature References: Application to the TOPEX Microwave Radiometer  

Science Conference Proceedings (OSTI)

A method is described to calibrate a satellite microwave radiometer operating near 18–37 GHz on decadal time scales for the purposes of climate studies. The method uses stable on-earth brightness temperature references over the full dynamic range ...

Shannon Brown; Shailen Desai; Stephen Keihm; Wenwen Lu

2009-12-01T23:59:59.000Z

57

Nonlinear competition between asters and stripes in filament-motor-systems  

E-Print Network (OSTI)

A model for polar filaments interacting via molecular motor complexes is investigated which exhibits bifurcations to spatial patterns. It is shown that the homogeneous distribution of filaments, such as actin or microtubules, may become either unstable with respect to an orientational instability of a finite wave number or with respect to modulations of the filament density, where long wavelength modes are amplified as well. Above threshold nonlinear interactions select either stripe patterns or periodic asters. The existence and stability ranges of each pattern close to threshold are predicted in terms of a weakly nonlinear perturbation analysis, which is confirmed by numerical simulations of the basic model equations. The two relevant parameters determining the bifurcation scenario of the model can be related to the concentrations of the active molecular motors and of the filaments respectively, which both could be easily regulated by the cell.

Falko Ziebert; Walter Zimmermann

2005-02-09T23:59:59.000Z

58

Differential Microwave Radiometer and the Cosmic Microwave Background |  

Office of Science (SC) Website

Differential Differential Microwave Radiometer and the Cosmic Microwave Background Laboratory Policy and Evaluation (LPE) LPE Home Staff M&O Contracts SC Laboratory Appraisal Process Laboratory Planning Process Work for Others in the Office of Science Laboratory Directed Research and Development (LDRD) DOE's Philosophy on LDRD Frequently Asked Questions Success Stories Brochures Additional Information LDRD Program Contacts Technology Transfer DOE National Laboratories Contact Information Laboratory Policy and Evaluation U.S. Department of Energy SC-32/Forrestal Building 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5447 F: (202) 586-3119 Success Stories Differential Microwave Radiometer and the Cosmic Microwave Background Print Text Size: A A A RSS Feeds FeedbackShare Page

59

Method and apparatus for precision control of radiometer  

SciTech Connect

A radiometer controller of a solar radiation detector is described. The system includes a calibration method and apparatus comprised of mounting all temperature sensitive elements of the controller in thermostatically controlled ovens during calibration and measurements, using a selected temperature that is above any which might be reached in the field. The instrument is calibrated in situ by adjusting heater power to the receptor cavity in the radiometer detector to a predetermined full scale level as displayed by a meter. Then with the heater de-energized and the receptor cavity covered, the voltage output, is set to zero as displayed by the meter. Next the preset power is applied to the heater and the output of the radiant measurement channel is applied to the panel meter. With this preset heater power producing the proper heat, the gain of the measurement channel is adjusted to bring the meter display to full scale.

Estey, R.S.

1981-04-01T23:59:59.000Z

60

Narrow Field of View Zenith Radiometer (NFOV) Handbook  

SciTech Connect

The two-channel narrow field-of-view radiometer (NFOV2) is a ground-based radiometer that looks straight up and measures radiance directly above the instrument at wavelengths of 673 and 870 nm. The field-of-view of the instrument is 1.2 degrees, and the sampling time resolution is one second. Measurements of the NFOV2 have been used to retrieve optical properties for overhead clouds that range from patchy to overcast. With a one-second sampling rate of the NFOV2, faster than almost any other ARM Climate Research Facility (ACRF) instrument, we are able, for the first time, to capture changes in cloud optical properties at the natural time scale of cloud evolution.

Chiu, C; Marshak, A; Hodges, G; Barnard, JC; Schmelzer, J

2008-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "reflection radiometer aster" 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

Quantitative Analysis of Spectral Impacts on Silicon Photodiode Radiometers: Preprint  

DOE Green Energy (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

62

ARM Multi-Filter Rotating Shadowband Radiometer (MFRSR): irradiances  

DOE Data Explorer (OSTI)

The multifilter rotating shadowband radiometer (MFRSR) takes spectral measurements of direct normal, diffuse horizontal and total horizontal solar irradiances. These measurements are at nominal wavelengths of 415, 500, 615, 673, 870, and 940 nm. The measurements are made at a user-specified time interval, usually about one minute or less. The sampling rate for the Atmospheric Radiation Measurement (ARM) Climate Research Facility MFRSRs is 20 seconds. From such measurements, one may infer the atmosphere's optical depth at the wavelengths mentioned above. In turn, these optical depths may be used to derive information about the column abundances of ozone and water vapor (Michalsky et al. 1995), as well as aerosol (Michalsky et al. 1994) and other atmospheric constituents. A silicon detector is also part of the MFRSR. This detector provides a measure of the broadband direct normal, diffuse horizontal and total horizontal solar irradiances. A MFRSR head that is mounted to look vertically downward can measure upwelling spectral irradiances. In the ARM system, this instrument is called a multifilter radiometer (MFR). At the Southern Great Plains (SGP) there are two MFRs; one mounted at the 10-m height and the other at 25 m. At the North Slope of Alaska (NSA) sites, the MFRs are mounted at 10 m. MFRSR heads are also used to measure normal incidence radiation by mounting on a solar tracking device. These are referred to as normal incidence multi-filter radiometers (NIMFRs) and are located at the SGP and NSA sites. Another specialized use for the MFRSR is the narrow field of view (NFOV) instrument located at SGP. The NFOV is a ground-based radiometer (MFRSR head) that looks straight up.

Hodges, Gary

63

NREL: MIDC/SMUD Anatolia Rotating Shadowband Radiometer (38.55...  

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

The Measurement and Instrumentation Data Center collects Irradiance and Meterological data from the SMUD Anatolia Irradiance Inc. Rotating Shadowband Radiometer v2....

64

LAKESHORE AVON BR ANT-EDEN ALD EN-LANC ASTER AU BURN W SH ELDON  

U.S. Energy Information Administration (EIA) Indexed Site

81 81 § ¨ ¦ 81 LAKESHORE AVON BR ANT-EDEN ALD EN-LANC ASTER AU BURN W SH ELDON CALEDONIA HURON C REEK LEIC EST ER COL DEN ASH FORD INDIAN FALLS LAWTONS SAR DINIA RPD-037 -2 GLENWOOD PU LASKI PAVILION CON CORD COL LINS N ELM A ORC HARD PARK-H AMBU RG DANLEY CORNERS ST ILLWAT ER CHAFF EE-ARCAD E FAYETT E-WATERLOO LAKEVIEW JAVA SEN EC A W ELLER Y AU RORA E ZOAR BU FFALO TIOGA SILVER LAKE AKR ON ROM E RAT HBON E ALM A BET HANY WYOMING ULYSSES BR ANCH W SAN DY CREEK COL LINS BLOOMFIELD E LEBANON STATE LINE ALLEN CHUR CHVILLE BATH ATT ICA ELLI COT VILLE ROU LETT E BR ADFORD BU FFALO CREEK PEN N YAN N BEECH HILL-INDEPENDENC E GERRY-CH ARLOTTE STAGECOACH CHIPMUN K HEBRON VIN CENT BALD WI NSVILLE AKELEY OLEAN COWLESVILLE AN NIN SMET HPORT BR ADLEY BR OOK BU STI FIVE MILE BLOOMFIELD W SEN EC A FALLS NILE STAGECOACH LEWIS R UN BR ADFORD CAMDEN VAN ETT EN ROAN OKE SH ARON RICHBU RG FULTON N FINN EGAN H ILL TONAWANDA

65

A New Look at Calibration and Use of Eppley Precision Infrared Radiometers. Part II: Calibration and Use of the Woods Hole Oceanographic Institution Improved Meteorology Precision Infrared Radiometer*  

Science Conference Proceedings (OSTI)

For some years, investigators have made measurements of downwelling longwave irradiance with the Eppley Precision Infrared Radiometer (PIR), recording the values of thermopile voltage and body and dome thermistor resistances and combining them in ...

Richard E. Payne; Steven P. Anderson

1999-06-01T23:59:59.000Z

66

A High-Accuracy Multiwavelength Radiometer for In Situ Measurements in the Thermal Infrared. Part I: Characterization of the Instrument  

Science Conference Proceedings (OSTI)

The new infrared radiometer (conveyable low-noise infrared radiometer for measurements of atmosphere and ground surface targets, or CLIMAT) is a highly sensitive field instrument designed to measure brightness temperatures or radiances in the ...

Michel Legrand; Christophe Pietras; Gérard Brogniez; Martial Haeffelin; Nader Khalil Abuhassan; Michaël Sicard

2000-09-01T23:59:59.000Z

67

Calibration of Geostationary-Satellite Infrared Radiometers Using the TIROS-N Vertical Sounder: Application to METEOSAT-1  

Science Conference Proceedings (OSTI)

A method is presented for the calibration of infrared radiometers on geostationary satellites using calibrated infrared radiometers on an orbiting satellite. This method relies on similarities between the weighting functions corresponding to the ...

N. Beriot; N. A. Scott; A. Chedin; P. Sitbon

1982-01-01T23:59:59.000Z

68

ECE RADIOMETER UPGRADE ON THE DIII-D TOKAMAK  

SciTech Connect

OAK A271 ECE RADIOMETER UPGRADE ON THE DIII-D TOKAMAK. The electron cyclotron emission (ECE) heterodyne radiometer diagnostic on DIII-D has been upgraded with the addition of eight channels for a total of 40. The new, higher frequency channels allow measurements of electron temperature into the magnetic axis in discharges at maximum field, 2.15 T. The complete set now extends over the full usable range of second harmonic emission frequencies at 2.0 T covering radii from the outer edge inward to the location of third harmonic overlap on the high field side. Full coverage permits the measurement of heat pulses and magnetohydrodynamic (MHD) fluctuations on both sides of the magnetic axis. In addition, the symmetric measurements are used to fix the location of the magnetic axis in tokamak magnetic equilibrium reconstructions. Also, the new higher frequency channels have been used to determine central T{sub e} with good time resolution in low field, high density discharges using third harmonic ECE in the optically gray and optically thick regimes.

AUSTIN, ME; LOHR, J

2002-08-01T23:59:59.000Z

69

Dual transmission grating based imaging radiometer for tokamak edge and divertor plasmas  

Science Conference Proceedings (OSTI)

The designs of single transmission grating based extreme ultraviolet (XUV) and vacuum ultraviolet (VUV) imaging spectrometers can be adapted to build an imaging radiometer for simultaneous measurement of both spectral ranges. This paper describes the design of such an imaging radiometer with dual transmission gratings. The radiometer will have an XUV coverage of 20-200 A with a {approx}10 A resolution and a VUV coverage of 200-2000 A with a {approx}50 A resolution. The radiometer is designed to have a spatial view of 16 Degree-Sign , with a 0.33 Degree-Sign resolution and a time resolution of {approx}10 ms. The applications for such a radiometer include spatially resolved impurity monitoring and electron temperature measurements in the tokamak edge and the divertor. As a proof of principle, the single grating instruments were used to diagnose a low temperature reflex discharge and the relevant data is also included in this paper.

Kumar, Deepak; Clayton, Daniel J.; Parman, Matthew; Stutman, Dan; Tritz, Kevin; Finkenthal, Michael [Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218 (United States)

2012-10-15T23:59:59.000Z

70

Spectral Reflectance of Whitecaps: Instrumentation, Calibration, and Performance in Coastal Waters  

Science Conference Proceedings (OSTI)

A measurement system for determining the spectral reflectance of whitecaps in the open ocean is described. The upwelling radiance is obtained from a ship by observing a small region of the water surface over time using a six-channel radiometer (...

Karl D. Moore; Kenneth J. Voss; Howard R. Gordon

1998-04-01T23:59:59.000Z

71

Working Group Reports A Short-Wave Radiometer Array Across  

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

9 9 Working Group Reports A Short-Wave Radiometer Array Across the Tropical Pacific Ocean as a Component of the TOGA-TAO Buoy Array R. M. Reynolds Brookhaven National Laboratory Upton, New York Introduction The purpose of this document is to bring together pertinent information concerning the NOAA TOGA-TAO buoy array so that a decision can be made for the following questions: 1. Are the scientific gains from an array of short-wave radiation sensors in the equatorial Pacific Ocean sufficiently impelling that DOE/ARM should provide financial and material support to NOAA/PMEL to install and operate this array? 2. What scientists and/or scientific studies would directly benefit from such a data set? 3. What should that array look like? That is, what sub-set of buoys should be so implemented given the per-buoy

72

Measurement of Boundary-Layer Temperature Profiles by a Scanning 5-MM Radiometer During the 1999 Winter NSA/AAO Radiometer Exp  

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

Boundary-Layer Temperature Profiles by Boundary-Layer Temperature Profiles by a Scanning 5-MM Radiometer During the 1999 Winter NSA/AAO Radiometer Experiment and WVIOP 2000 V. Y. Leuski and E. R. Westwater Cooperative Institute for Research in the Environmental Sciences National Oceanic and Atmospheric Administration Environmental Technology Laboratory University of Colorado Boulder, Colorado Introduction A scanning 5-mm-wavelength radiometer was deployed during two Intensive Operational Periods (IOPs) at the Atmospheric Radiation Measurement (ARM) Program's Cloud and Radiation Testbed (CART) facilities. The first was conducted at the North Slope of Alaska (NSA) and Adjacent arctic Ocean (AAO) site near Barrow, Alaska, during March 1999. One goal was to evaluate the ability of an

73

Ocean Aerosols: The Marine Fast-Rotating Shadow-Band Radiometer Network  

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

Ocean Aerosols: The Marine Fast-Rotating Ocean Aerosols: The Marine Fast-Rotating Shadow-Band Radiometer Network M. A. Miller, R. M. Reynolds, and J. J. Bartholomew Brookhaven National Laboratory Upton, New York Introduction A network of ship-mounted marine fast-rotating shadow-band radiometers (FRSRs) and broadband radiometers have been deployed over the fast four years on several backbone ships, funded jointly by Atmospheric Radiation Measurement (ARM) and National Aeronautic and Space Administration's (NASA's) Sensor Intercomparison and Merger for Biological and Interdisciplinary Studies (SIMBIOS). These radiometers operate continuously and automatically during daylight hours. There fundamental measurements made by the FRSRs in the network are the direct-normal irradiance

74

Advanced Rain/No-Rain Classification Methods for Microwave Radiometer Observations over Land  

Science Conference Proceedings (OSTI)

Seto et al. developed rain/no-rain classification (RNC) methods over land for the Tropical Rainfall Measuring Mission (TRMM) Microwave Imager (TMI). In this study, the methods are modified for application to other microwave radiometers. The ...

Shinta Seto; Takuji Kubota; Nobuhiro Takahashi; Toshio Iguchi; Taikan Oki

2008-11-01T23:59:59.000Z

75

MEASUREMENTS AND RETRIEVALS FROM A NEW 183-GHz WATER VAPOR RADIOMETER IN  

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

MEASUREMENTS AND RETRIEVALS FROM A NEW 183-GHz WATER VAPOR RADIOMETER IN MEASUREMENTS AND RETRIEVALS FROM A NEW 183-GHz WATER VAPOR RADIOMETER IN THE ARCTIC Cadeddu, Maria Argonne National Laboratory Category: Instruments A new G-band (183 GHz) vapor radiometer (GVR), developed and built by Prosensing Inc. (http://www.prosensing.com), was deployed in Barrow, Alaska, in April 2005. The radiometer was deployed as part of the ongoing Atmospheric Radiation Measurement (ARM) program's effort to improve water vapor retrievals in the cold, dry Arctic environment. The instrument measures brightness temperatures from four double sideband channels centered at 1, 3, 7, and 14 GHz from the 183.31-GHz water vapor line. Atmospheric emission in this spectral region is primarily due to water vapor, with some influence from liquid water. The GVR will remain in Barrow

76

Attitude Determination from a Balloon-Borne Radiometer Using Two-Sided Limb Scanning  

Science Conference Proceedings (OSTI)

The determination of the horizontal attitude of a balloon-borne, infrared, limb-scanning radiometer is discussed. In particular, the relationship between scan-angle, as measured by the instrument, and the tangent height of the ray path through ...

J. R. Drummond; D. Turner; A. Ashton

1986-03-01T23:59:59.000Z

77

An Evaluation of a Self-Calibrating Infrared Radiometer for Measuring Sea Surface Temperature  

Science Conference Proceedings (OSTI)

Satellite radiometer measurements of global sea surface temperature (SST) with an accuracy of 0.3 K are required for climate change monitoring. In order to validate that this accuracy can be achieved, in situ measurements of sea surface radiance ...

J. P. Thomas; R. J. Knight; H. K. Roscoe; J. Turner; C. Symon

1995-04-01T23:59:59.000Z

78

Errors in Net Radiometry: Comparison and Evaluation of Six Radiometer Designs  

Science Conference Proceedings (OSTI)

Net radiation is a fundamental variable in meteorology, but net radiometers have not been used extensively since the 1960s because of what is commonly considered as unreliable function. This study was conducted to determine whether this problem ...

Sven Halldin; Anders Lindroth

1992-12-01T23:59:59.000Z

79

The Miami2001 Infrared Radiometer Calibration and Intercomparison. Part I: Laboratory Characterization of Blackbody Targets  

Science Conference Proceedings (OSTI)

The second calibration and intercomparison of infrared radiometers (Miami2001) was held at the University of Miami's Rosenstiel School of Marine and Atmospheric Science (RSMAS) during May–June 2001. The participants were from several groups ...

J. P. Rice; J. J. Butler; B. C. Johnson; P. J. Minnett; K. A. Maillet; T. J. Nightingale; S. J. Hook; A. Abtahi; C. J. Donlon; I. J. Barton

2004-02-01T23:59:59.000Z

80

Combining Microwave Radiometer and Wind Profiler Radar Measurements for High-Resolution Atmospheric Humidity Profiling  

Science Conference Proceedings (OSTI)

A self-consistent remote sensing physical method to retrieve atmospheric humidity high-resolution profiles by synergetic use of a microwave radiometer profiler (MWRP) and wind profiler radar (WPR) is illustrated. The proposed technique is based ...

Laura Bianco; Domenico Cimini; Frank S. Marzano; Randolph Ware

2005-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "reflection radiometer aster" 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

Retrieval of Cirrus Cloud Radiative and Backscattering Properties Using Combined Lidar and Infrared Radiometer (LIRAD) Measurements  

Science Conference Proceedings (OSTI)

A method for retrieval of cirrus macrophysical and radiative properties using combined ruby lidar and infrared radiometer measurements is explained in detail. The retrieval algorithm includes estimation of a variable backscatter-to-extinction ...

Jennifer M. Comstock; Kenneth Sassen

2001-10-01T23:59:59.000Z

82

Hurricane Surface Wind Measurements from an Operational Stepped Frequency Microwave Radiometer  

Science Conference Proceedings (OSTI)

For the first time, the NOAA/Aircraft Operations Center (AOC) flew stepped frequency microwave radiometers (SFMRs) on both WP-3D research aircraft for operational hurricane surface wind speed measurement in 2005. An unprecedented number of major ...

Eric W. Uhlhorn; Peter G. Black; James L. Franklin; Mark Goodberlet; James Carswell; Alan S. Goldstein

2007-09-01T23:59:59.000Z

83

Design, Operation, and Calibration of a Shipboard Fast-Rotating Shadowband Spectral Radiometer  

Science Conference Proceedings (OSTI)

This paper describes the design, calibration, and deployment of a fast-rotating shadowband radiometer (FRSR) that accurately decomposes downward shortwave (solar) irradiance into direct-beam and diffuse components from a moving platform, such as ...

R. Michael Reynolds; Mark A. Miller; Mary J. Bartholomew

2001-02-01T23:59:59.000Z

84

Optimizing Performance of a Microwave Salinity Mapper: STARRS L-Band Radiometer Enhancements  

Science Conference Proceedings (OSTI)

Airborne microwave radiometers for salinity remote sensing have advanced to a point where operational surveys can be conducted over the inner continental shelf to observe the evolution of freshwater plumes emanating from rivers and estuaries. To ...

Derek M. Burrage; Joel C. Wesson; Mark A. Goodberlet; Jerry L. Miller

2008-05-01T23:59:59.000Z

85

Vicarious Calibration of an Ocean Salinity Radiometer from Low Earth Orbit  

Science Conference Proceedings (OSTI)

Statistical properties of the brightness temperature (TB) measured by a low-earth-orbiting radiometer operating at 1.4 GHz are considered as a means of calibrating and validating the sensor. Mapping of ocean salinity by such an instrument ...

Christopher S. Ruf

2003-11-01T23:59:59.000Z

86

Tropical Cyclone Rainfall Characteristics as Determined from a Satellite Passive Microwave Radiometer  

Science Conference Proceedings (OSTI)

Data from the Nimbus-5 F-Electrically Scanning Microwave Radiometer (ESMR-5) have been used to calculate latent heat release (LHR) and other rainfall parameters for over 70 satelite observations of 21 tropical cyclones during 1973, 1974 and 1975 ...

E. B. Rodgers; R. F. Adler

1981-03-01T23:59:59.000Z

87

Multiwavelength Scanning Radiometer for Airborne Measurements of Scattered Radiation within Clouds  

Science Conference Proceedings (OSTI)

A multi-wavelength scanning radiometer has been developed for measuring the angular distribution of scattered radiation deep within a cloud layer. The purpose of the instrument is to provide measurements from which the single scattering albedo of ...

Michael D. King; Maxwell G. Strange; Peter Leone; Lamdin R. Blaine

1986-09-01T23:59:59.000Z

88

Structure of Florida Thunderstorms Using High-Altitude Aircraft Radiometer and Radar Observations  

Science Conference Proceedings (OSTI)

This paper presents an analysis of a unique radar and radiometer dataset from the National Aeronautics and Space Administration (NASA) ER-2 high-altitude aircraft overlying Florida thunderstorms on 5 October 1993 during the Convection and ...

G. M. Heymsfield; J. M. Shepherd; S. W. Bidwell; W. C. Boncyk; I. J. Caylor; S. Ameen; W. S. Olson

1996-10-01T23:59:59.000Z

89

High-Resolution Imaging of Rain Systems with the Advanced Microwave Precipitation Radiometer  

Science Conference Proceedings (OSTI)

An Advanced Microwave Precipitation Radiometer (AMPR) has been developed and flown in the NASA ER-2 high-altitude aircraft for imaging various atmospheric and surface processes, primarily the internal structure of rain clouds. The AMPR is a ...

Roy W. Spencer; Robbie E. Hood; Frank J. Lafontaine; Eric A. Smith; Robert Platt; Joe Galliano; Vanessa L. Griffin; Elena Lobl

1994-08-01T23:59:59.000Z

90

Using digital cameras as quasi-spectral radiometers to study complex fenestration systems  

E-Print Network (OSTI)

This work discusses the use of digital cameras fitted with absorption filters as quasi-spectral radiometers. By filtering incident light into selected wavelength intervals, accurate estimates of radiances can be made for ...

Gayeski, Nicholas

91

Numerical Filtering of Spurious Transients in a Satellite Scanning Radiometer: Application to CERES  

Science Conference Proceedings (OSTI)

The Clouds and Earth Radiant Energy System (CERES) scanning radiometer was designed to provide high accuracy measurements of the radiances from the earth. Calibration testing of the instruments showed the presence of an undesired slow transient ...

G. Louis Smith; D. K. Pandey; Robert B. Lee III; Bruce R. Barkstrom; Kory J. Priestley

2002-02-01T23:59:59.000Z

92

Spatial Variability of Summer Florida Precipitation and Its Impact on Microwave Radiometer Rainfall-Measurement Systems  

Science Conference Proceedings (OSTI)

Three-dimensional radar data for three summer Florida storm are used as input to a microwave radiative transfer model. The model simulates microwave brightness observations by a 19-GHz, nadir-pointing, satellite-borne microwave radiometer.

B. J. Turner; G. L. Austin

1993-02-01T23:59:59.000Z

93

Bayesian Estimation of Precipitation from Satellite Passive Microwave Observations Using Combined Radar–Radiometer Retrievals  

Science Conference Proceedings (OSTI)

Precipitation estimation from satellite passive microwave radiometer observations is a problem that does not have a unique solution that is insensitive to errors in the input data. Traditionally, to make this problem well posed, a priori ...

Mircea Grecu; William S. Olson

2006-03-01T23:59:59.000Z

94

Correlations between Nimbus-7 Scanning Multichannel Microwave Radiometer Data and an Antecedent Precipitation Index  

Science Conference Proceedings (OSTI)

Passive microwave brightness temperatures from the Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) can be used to infer the soil moisture content over agricultural areas such as the southern Great Plains of the United States. A linear ...

Gregory D. Wilke; Marshall J. McFarland

1986-02-01T23:59:59.000Z

95

Mobile Microwave Radiometer Observations: Spatial Characteristics of Supercooled Cloud Water and Cloud Seeding Implications  

Science Conference Proceedings (OSTI)

Previous studies of the spatial distribution of supercooled liquid water in winter storms over mountainous terrain were performed primarily with instrumented aircraft and to a lesser extent with scans from a stationary microwave radiometer. The ...

Arlen W. Huggins

1995-02-01T23:59:59.000Z

96

Comparison of Infrared Atmospheric Brightness Temperatures Measured by a Fourier Transform Spectrometer and a Filter Radiometer  

Science Conference Proceedings (OSTI)

Increased interest in using atmospheric brightness temperature measurements from simple infrared radiometers combined with radars and lidars has prompted the investigation of their accuracy for various sky conditions. In comparisons of ...

Joseph A. Shaw; Jack B. Snider; James H. Churnside; Mark D. Jacobson

1995-10-01T23:59:59.000Z

97

Producing Mega-pixel CMB Maps from Differential Radiometer Data  

E-Print Network (OSTI)

A major goal of cosmology is to obtain sensitive, high resolution maps of the Cosmic Microwave Background (CMB) anisotropy. Such maps, as would be produced by the recently proposed Microwave Anisotropy Probe (MAP), will contain a wealth of primary information about conditions in the early universe. To mitigate systematic effects when observing the microwave background, it is desirable for the raw data to be collected in differential form: as a set of temperature differences between points in the sky. However, the production of large (mega-pixel) maps from a set of temperature differences is a potentially severe computational challenge. We present a new technique for producing maps from differential radiometer data that has a computational cost that grows in the slowest possible way with increasing angular resolution and number of map pixels. The required central processor (CPU) time is proportional to the number of differential data points and the required random access memory (RAM) is proportional to the number of map pixels. We test our technique, and demonstrate its feasibility, by simulating one year of a space-borne anisotropy mission.

Edward L. Wright; Gary Hinshaw; Charles L. Bennett

1995-10-20T23:59:59.000Z

98

The Usefulness of In-Flight Measurements of Space Count to Improve Calibration of the AVHRR Solar Reflectance Bands  

Science Conference Proceedings (OSTI)

The solar reflectance bands (SRB; centered at ?1 = 0.63, ?2 = 0.83, and ?3A = 1.61 ?m) of the Advanced Very High Resolution Radiometers (AVHRR) flown on board NOAA satellites are often referred to as noncalibrated in-flight. In contrast, the ...

Alexander Ignatov; Changyong Cao; Jerry Sullivan; Robert Levin; Xiangqian Wu; Roy Galvin

2005-02-01T23:59:59.000Z

99

Evaluation of Radiometers in Full-Time Use at the National Renewable Energy Laboratory Solar Radiation Research Laboratory  

DOE Green Energy (OSTI)

This report describes the evaluation of the relative performance of the complement of solar radiometers deployed at the National Renewable Energy Laboratory (NREL) Solar Radiation Research Laboratory (SRRL).

Wilcox, S. M.; Myers, D. R.

2008-12-01T23:59:59.000Z

100

Retrieval of Precipitation Profiles from Airborne Radar and Passive Radiometer Measurements: Comparison with Dual-Frequency Radar Measurements  

Science Conference Proceedings (OSTI)

This study compares precipitation rate profiles derived from a single frequency radar and radiometer with such profiles derived from a dual-frequency radar.

J. A. Weinman; R. Meneghini; K. Nakamura

1990-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "reflection radiometer aster" 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

Determination of total ozone from DMSP multichannel filter radiometer measurements  

Science Conference Proceedings (OSTI)

The multichannel filter radiometer (MFR) infrared sensor was first flown in 1977 on a Defense Meteorological Satellite Program (DMSP) Block 5D series satellite operated by the US Air Force. The first four satellites in this series carried MFR sensors from which total atmospheric column ozone amounts may be derived. The last MFR sensor ceased operating on February 16, 1980. The series of four sensors spans a data period of nearly three years. The MFR sensor measures infrared radiances for 16 channels. Total ozone amounts are determined from sets of radiance measurements using an empirical relationship that is developed using linear regression analysis. Total ozone is modeled as a linear combination of terms involving functions of the MFR radiances for four channels (1, 3, 7 and 16) and the secant of the zenith angle. The ozone retrieval methodology is described schematically. The ozone retrieval model is developed through regression analysis using sets of simulated MFR radiances derived from detailed radiative transfer calculations. The MFR total ozone data are compared with independent ground-based Dobson measurements in order to evaluate the ozone retrieval methodology. Many Dobson observatories have been providing their daily measurements of total ozone which are taken close in time to DMSP overpass times. MFR total ozone data are compared with Dobson measurements taken between January 1 and February 15, 1979, and the results are summarized. Comparisons were made where the MFR and Dobson measurements are within 300 km and 300 minutes of each other. Percentages are computed with respect to the Dobson values. The MFR data were processed using a preliminary methodology, and the data will be reprocessed in the near future.

Luther, F.M.; Weichel, R.L.

1980-09-01T23:59:59.000Z

102

A 16-channel heterodyne electron cyclotron emission radiometer on J-TEXT  

SciTech Connect

To study equilibrium temporal dynamics and the mechanisms of magnetohydrodynamic instabilities, a 16-channel heterodyne electron cyclotron emission (ECE) radiometer has been developed to view the J-TEXT tokamak from the low field side. The ECE radiometer detects second-harmonic extraordinary mode in the frequency band of 94-125 GHz which corresponds to resonances from 1.8 T to 2.2 T. This ECE system consists of an ECE transmission line, a radio frequency unit, and two 8-channel intermediate frequency units. An in situ blackbody calibration source is applied for system calibration by comparison of hot and cold sources in order to provide an absolute temperature measurement.

Yang, Z. J.; Zhuang, G.; Xiao, J. S.; Wang, Z. J. [State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074 (China); Key Laboratory of Fusion and Advanced Electromagnetic Technology Ministry of Education, Huazhong University of Science and Technology, Wuhan, Hubei 430074 (China); Phillips, P. E.; Huang, H.; Rowan, W. L. [Institute for Fusion Studies, University of Texas at Austin, Austin, Texas 78712 (United States)

2012-10-15T23:59:59.000Z

103

Atmospheric Longwave Irradiance Uncertainty: Pyrgeometers Compared to an Absolute Sky-Scanning Radiometer, Atmospheric Emitted Radiance Interferometer, and Radiative Transfer Model Calculations  

SciTech Connect

Because atmospheric longwave radiation is one of the most fundamental elements of an expected climate change, there has been a strong interest in improving measurements and model calculations in recent years. Important questions are how reliable and consistent are atmospheric longwave radiation measurements and calculations and what are the uncertainties? The First International Pyrgeometer and Absolute Sky-scanning Radiometer Comparison, which was held at the Atmospheric Radiation Measurement program's Souther Great Plains site in Oklahoma, answers these questions at least for midlatitude summer conditions and reflects the state of the art for atmospheric longwave radiation measurements and calculations. The 15 participating pyrgeometers were all calibration-traced standard instruments chosen from a broad international community. Two new chopped pyrgeometers also took part in the comparison. And absolute sky-scanning radiometer (ASR), which includes a pyroelectric detector and a reference blackbody source, was used for the first time as a reference standard instrument to field calibrate pyrgeometers during clear-sky nighttime measurements. Owner-provided and uniformly determined blackbody calibration factors were compared. Remarkable improvements and higher pyrgeometer precision were achieved with field calibration factors. Results of nighttime and daytime pyrgeometer precision and absolute uncertainty are presented for eight consecutive days of measurements, during which period downward longwave irradiance varied between 260 and 420 W m-2. Comparisons between pyrgeometers and the absolute ASR, the atmospheric emitted radiance interferometer, and radiative transfer models LBLRTM and MODTRAN show a surprisingly good agreement of <2 W m-2 for nighttime atmospheric longwave irradiance measurements and calculations.

Philipona, J. R.; Dutton, Ellsworth G.; Stoffel, T.; Michalsky, Joseph J.; Reda, I.; Stifter, Armin; Wendling, Peter; Wood, Norm; Clough, Shepard A.; Mlawer, Eli J.; Anderson, Gail; Revercomb, Henry E.; Shippert, Timothy R.

2001-06-04T23:59:59.000Z

104

Characterization of the Immersion Factor for a Series of In-Water Optical Radiometers  

Science Conference Proceedings (OSTI)

Spectral immersion factors, If(?), account for the difference between the in-air and in-water absolute response of submersible radiometers and are required to properly apply the in-air absolute calibration of the sensor when used underwater. The ...

G. Zibordi; S. B. Hooker; J. Mueller; G. Lazin

2004-03-01T23:59:59.000Z

105

Validation of Atlantic Ocean Sea Surface Temperatures Measured by the ERS-1 Along Track Scanning Radiometer  

Science Conference Proceedings (OSTI)

During the period from October 1991 to May 1992 the royal research ship Bransfield made its annual voyage from the United Kingdom to Antarctica and back. Whenever the measurement swath of the Along Track Scanning Radiometer (ATSR) on the ERS-1 ...

J. P. Thomas; J. Turner

1995-12-01T23:59:59.000Z

106

G-Band Vapor Radiometer Precipitable Water Vapor (GVRPWV) Value-Added Product  

SciTech Connect

The G-Band Vapor Radiometer Precipitable Water Vapor (GVRPWV) value-added product (VAP) computes precipitable water vapor using neural network techniques from data measured by the GVR. The GVR reports time-series measurements of brightness temperatures for four channels located at 183.3 ± 1, 3, 7, and 14 GHz.

Koontz, A; Cadeddu, M

2012-12-05T23:59:59.000Z

107

Correcting Active Scatterometer Data for the Effects of Rain Using Passive Radiometer Data  

Science Conference Proceedings (OSTI)

A model for the effects of rain on scatterometer data is proposed. Data from the Advanced Microwave Scanning Radiometer (AMSR) and the SeaWinds scatterometer, both on the Midori-II satellite, are used. The model includes three basic rain effects: ...

K. A. Hilburn; F. J. Wentz; D. K. Smith; P. D. Ashcroft

2006-03-01T23:59:59.000Z

108

An Airborne Millimeter-Wave Imaging Radiometer for Cloud, Precipitation, and Atmospheric Water Vapor Studies  

Science Conference Proceedings (OSTI)

A six-channel airborne total-power Millimeter-wave Imaging Radiometer (MIR) was recently built to provide measurements of atmospheric water vapor, clouds, and precipitation. The instrument is a cross-track scanner that has a 3-dB beamwidth of 3.5°...

P. Racette; R. F. Adler; J. R. Wang; A. J. Gasiewski; D. M. Jakson; D. S. Zacharias

1996-06-01T23:59:59.000Z

109

Sun Glint Contamination in ATSR-2 Data: Comparison of Observations and Values Calculated from the Measured 1.6-?m Reflectivities  

Science Conference Proceedings (OSTI)

The effect of radiation from the sun reflected at the sea surface on the 11- and 12-?m brightness temperatures measured by the Along-Track Scanning Radiometer ATSR-2 has been investigated. An attempt was made to determine its magnitude by ...

Albin M. Závody; Andrew R. Birks

2004-05-01T23:59:59.000Z

110

Determination of the Optical Thickness and Effective Particle Radius of Clouds from Reflected Solar Radiation Measurements. Part II: Marine Stratocumulus Observations  

Science Conference Proceedings (OSTI)

A multispectral scanning radiometer has been used to obtain measurements of the reflection function of marine stratocumulus clouds at 0.75, 1.65 and 2.16 ?m. These observations were obtained from the NASA ER-2 aircraft as part of the First ISCCP [...

Teruyuki Nakajima; Michael D. King; James D. Spinhirne; Lawrence F. Radke

1991-03-01T23:59:59.000Z

111

Acronyms  

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

Acronyms Acronyms ADEOS Advanced Earth Observing Satellite (Japan) AERONET Aerosol Robotic Network AirMISR Airborne MISR ARM Atmospheric Radiation Measurement Program ASTER Advanced Spaceborne Thermal Emission and Reflection radiometer ATBD Algorithm Theoretical Basis Document AVHRR Advanced Very High Resolution Radiometer AVIRIS Airborne Visible/Infrared Imaging Spectrometer BRDF Bidirectional Reflectance Distribution Function CART Clouds and Radiation Testbed CERES Clouds and the Earth's Radiant Energy System DAAC Distributed Active Archive Center EOS Earth Observing System EOSDIS EOS Data and Information System GCIP GEWEX Continental-Scale International Project GEWEX Global Energy and Water Cycle Experiment GLI Global Imager GOES Geostationary Operational Environmental Satellite

112

GVR (G-Band Vapor Radiometer) M.P. Cadeddu and J.C. Liljegren Argonne Natl. Laboratory  

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

MWR status MWR status M.P. Cadeddu New radiometers New radiometers ECO-00664 (MWR procurement) open Specifications have been written and submitted Draft of specifications sent to vendors last month A few changes were incorporated after vendors feedback. Final specification document will be sent next week. ECO-00664 (MWR procurement) open Specifications have been written and submitted Draft of specifications sent to vendors last month A few changes were incorporated after vendors feedback. Final specification document will be sent next week. PWV-LWP: 12 2-channel MWR Temperature-humidity profile: 2 profilers operating Low LWP-PWV: 2 183-GHz radiometers Low LWP: 2 90/150-GHz radiometers PWV-LWP: 12 2-channel MWR Temperature-humidity profile: 2 profilers

113

Remote Sensing of Atmospheric Aerosols and Trace Gases by Means of Multifilter Rotating Shadowband Radiometer. Part I: Retrieval Algorithm  

Science Conference Proceedings (OSTI)

A retrieval algorithm for processing multifilter rotating shadowband radiometer (MFRSR) data from clear and partially cloudy days is described and validated. This method, while complementary to the Langley approach, uses consistency between the ...

Mikhail D. Alexandrov; Andrew A. Lacis; Barbara E. Carlson; Brian Cairns

2002-02-01T23:59:59.000Z

114

A Second-Generation Blackbody System for the Calibration and Verification of Sea-Going Infrared Radiometers  

Science Conference Proceedings (OSTI)

Quasi-operational shipborne radiometers provide a Fiducial Reference Measurement (FRM) for satellite validation of satellite sea surface skin temperature (SSTskin) retrievals. External reference blackbodies are required to verify the performance ...

Craig J. Donlon; W. Wimmer; I. Robinson; G. Fisher; M. Ferlet; T. Nightingale; B. Bras

115

The Calibration and Intercalibration of Sea-Going Infrared Radiometer Systems Using a Low Cost Blackbody Cavity  

Science Conference Proceedings (OSTI)

There are many infrared radiometer systems available for the measurement of in situ sea surface skin temperature (SSST). Unfortunately, the marine environment is extremely hostile to optical components, and to ensure the accuracy of SSST ...

C. J. Donlon; T. Nightingale; L. Fiedler; G. Fisher; D. Baldwin; I. S. Robinson

1999-09-01T23:59:59.000Z

116

First Three Years of the Microwave Radiometer aboard Envisat: In-Flight Calibration, Processing, and Validation of the Geophysical Products  

Science Conference Proceedings (OSTI)

The Envisat microwave radiometer is designed to correct the satellite altimeter data for the excess path delay resulting from tropospheric humidity. Neural networks have been used to formulate the inversion algorithm to retrieve this quantity ...

E. Obligis; L. Eymard; N. Tran; S. Labroue; P. Femenias

2006-06-01T23:59:59.000Z

117

A High-Accuracy Multiwavelength Radiometer for In Situ Measurements in the Thermal Infrared. Part II: Behavior in Field Experiments  

Science Conference Proceedings (OSTI)

The performances of the new conveyable low-noise infrared radiometer for measurements of atmosphere and ground surface targets, or CLIMAT, are presented for in situ measurements. For this, quantitative analyses were carried out on measurements ...

Gérard Brogniez; Christophe Pietras; Michel Legrand; Philippe Dubuisson; Martial Haeffelin

2003-07-01T23:59:59.000Z

118

A Change Detection Algorithm for Retrieving High-Resolution Soil Moisture From SMAP Radar and Radiometer Observations  

E-Print Network (OSTI)

A change detection algorithm has been developed in order to obtain high-resolution soil moisture estimates from future Soil Moisture Active and Passive (SMAP) L-band radar and radiometer observations. The approach combines ...

Piles, Maria

119

The Global Trend in Sea Surface Temperature from 20 Years of Advanced Very High Resolution Radiometer Data  

Science Conference Proceedings (OSTI)

The trend in sea surface temperature has been determined from 20 yr of Advanced Very High Resolution Radiometer Pathfinder data (version 5). The data span the period from January 1985 to December 2004, inclusive. The linear trends were calculated ...

S. A. Good; G. K. Corlett; J. J. Remedios; E. J. Noyes; D. T. Llewellyn-Jones

2007-04-01T23:59:59.000Z

120

A New Look at Calibration and Use of Eppley Precision Infrared Radiometers. Part I: Theory and Application  

Science Conference Proceedings (OSTI)

The calibration and accuracy of the Eppley precision infrared radiometer (PIR) is examined both theoretically and experimentally. A rederivation of the fundamental energy balance of the PIR indicates that the calibration equation in common use in ...

C. W. Fairall; P. O. G. Persson; E. F. Bradley; R. E. Payne; S. P. Anderson

1998-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "reflection radiometer aster" 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

Retrieval of Cirrus Microphysical Properties with a Suite of Algorithms for Airborne and Spaceborne Lidar, Radar, and Radiometer Data  

Science Conference Proceedings (OSTI)

Algorithms are developed to convert data streams from multiple airborne and spaceborne remote sensors into layer-averaged cirrus bulk microphysical properties. Radiometers such as the Moderate-Resolution Imaging Spectroradiometer (MODIS) observe ...

Yuying Zhang; Gerald G. Mace

2006-12-01T23:59:59.000Z

122

Comparison of Near–Real Time Estimates of Integrated Water Vapor Derived with GPS, Radiosondes, and Microwave Radiometer  

Science Conference Proceedings (OSTI)

In this study, the authors compare the integrated water vapor (IWV) retrieved with a global positioning system (GPS) receiver, radiosondes (RS), and a microwave radiometer (MWR) using data collected simultaneously during a 3-month campaign in the ...

Joël Van Baelen; Jean-Pierre Aubagnac; Alain Dabas

2005-02-01T23:59:59.000Z

123

Inference of Marine Atmospheric Boundary Layer Moisture and Temperature Structure Using Airborne Lidar and Infrared Radiometer Data  

Science Conference Proceedings (OSTI)

A new technique for retrieving near-surface moisture and profiles of mixing ratio and potential temperature through the depth of the marine atmospheric boundary layer (MABL) using airborne lidar and multichannel infrared radiometer data is ...

Stephen P. Palm; Denise Hagan; Geary Schwemmer; S. H. Melfi

1998-03-01T23:59:59.000Z

124

Retrieval of cloud properties using CALIPSO Imaging Infrared Radiometer. Part II: effective diameter and ice water path  

Science Conference Proceedings (OSTI)

The paper describes the version 3 Level 2 operational analysis of the Imaging Infrared Radiometer (IIR) data collected in the framework of the CALIPSO mission to retrieve cirrus cloud effective diameter and ice water path in synergy with the ...

Anne Garnier; Jacques Pelon; Philippe Dubuisson; Ping Yang; Michaël Faivre; Olivier Chomette; Nicolas Pascal; Pat Lucker; Tim Murray

125

A Steerable Dual-Channel Microwave Radiometer for Measurement of Water Vapor and Liquid in the Troposphere  

Science Conference Proceedings (OSTI)

An instrument that remotely senses the integrated amounts of water vapor and liquid on a path through the atmosphere is discussed. The vapor and liquid are measured simultaneously but independently by microwave radiometers. Comparison of the ...

D. C. Hogg; F. O. Guiraud; J. B. Snider; M. T. Decker; E. R. Westwater

1983-05-01T23:59:59.000Z

126

Remotely Sensed Measurements of Stratocumulus Properties during FIRE Using the C130 Aircraft Multi-channel Radiometer  

Science Conference Proceedings (OSTI)

This paper gives a description of a narrow-hand near-infrared radiometer that was operated during the marine stratocumulus intensive field observation program of FIRE in 1987 from the United Kingdom Meteorological Office C130 aircraft. All data ...

F. Rawlins; J. S. Foot

1990-11-01T23:59:59.000Z

127

Evaluating the Quality of Ground-Based Microwave Radiometer Measurements and Retrievals Using Detrended Fluctuation and Spectral Analysis Methods  

Science Conference Proceedings (OSTI)

Time series both of microwave radiometer brightness temperature measurements at 23.8 and 31.4 GHz and of retrievals of water vapor and liquid water path from these brightness temperatures are evaluated using the detrended fluctuation analysis ...

K. Ivanova; E. E. Clothiaux; H. N. Shirer; T. P. Ackerman; J. C. Liljegren; M. Ausloos

2002-01-01T23:59:59.000Z

128

Comparisons of Line-of-Sight Water Vapor Observations Using the Global Positioning System and a Pointing Microwave Radiometer  

Science Conference Proceedings (OSTI)

Line-of-sight measurements of integrated water vapor from a global positioning system (GPS) receiver and a microwave radiometer are compared. These two instruments were collocated at the central facility of the Department of Energy’s Atmospheric ...

John Braun; Christian Rocken; James Liljegren

2003-05-01T23:59:59.000Z

129

Characterization of Precipitating Clouds by Ground-Based Measurements with the Triple-Frequency Polarized Microwave Radiometer ADMIRARI  

Science Conference Proceedings (OSTI)

A groundbreaking new-concept multiwavelength dual-polarized Advanced Microwave Radiometer for Rain Identification (ADMIRARI) has been built and continuously operated in two field campaigns: the Convective and Orographically Induced Precipitation ...

Alessandro Battaglia; Pablo Saavedra; Thomas Rose; Clemens Simmer

2010-03-01T23:59:59.000Z

130

Microfluidic labeling of biomolecules with radiometals for use in nuclear Tobias D. Wheeler,ab  

E-Print Network (OSTI)

). The analysis was performed using the following gradient of 0.1 vol% TFA in de-ionized water (A) and 0.1 vol of concentrated reagents. As a model reaction, we radiolabel 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic of reservoirs for the incubation of the radiometal­ligand mixture and (3) a thin-film heater for heating

Kenis, Paul J. A.

131

Comparison of Historical Satellite Based Estimates of Solar Radiation Resources with Recent Rotating Shadowland Radiometer Measurements  

Science Conference Proceedings (OSTI)

Satellite-based solar radiation estimates have recently been incorporated into the 1990-2005 update to the 1961-1990 U.S. National Solar Radiation Database (NSRDB). The National Aeronautics and Space Administration (NASA) also supplies satellite-based estimates of solar radiation. The usefulness of such data with respect to solar resources for site selection and designing solar energy conversion systems is often questioned. The availability of rotating shadow band radiometer measurement data at several new stations provides an opportunity to compare historical satellite-based estimates of solar resources with measurements. We compare mean monthly daily total (MMDT) solar radiation data from eight years of NSRDB and 22 years of NASA hourly global horizontal and direct beam solar estimates with measured data from three stations, collected after the end of the available resource estimates. We compare the most recent shadowband radiometer MMDT with a complement of thermopile 'first class' solar radiometers at one site. Quantitative analysis shows that in most cases, the long-term average MMDT and measured data are comparable, within 10% of each other for global, and 20% for direct-radiation MMDT.

Myers, D.

2009-01-01T23:59:59.000Z

132

Relative Accuracy of 1-Minute and Daily Total Solar Radiation Data for 12 Global and 4 Direct Beam Solar Radiometers: Preprint  

DOE Green Energy (OSTI)

This report evaluates the relative performance of 12 global and four direct beam solar radiometers deployed at a single site over a 12-month period. Test radiometer irradiances were compared with a reference irradiance consisting of either an absolute cavity radiometer (during calibrations) or a low uncertainty thermopile pyrheliometer (during the evaluation period) for pyrheliometers; and for pyranometers a reference global irradiance computed from the reference pyrheliometer and diffuse irradiance from a shaded pyranometer.

Myers, D. R.; Wilcox, S. M.

2009-03-01T23:59:59.000Z

133

ARM: G-band (183 GHz) Vapor Radiometer profiler: 15 microwave brightness temperatures from 170.0 to 183.3 GHz  

DOE Data Explorer (OSTI)

G-band (183 GHz) Vapor Radiometer profiler: 15 microwave brightness temperatures from 170.0 to 183.3 GHz

Maria Cadeddu

134

Aster User Handbook  

E-Print Network (OSTI)

Acknowledgments This document was prepared at the Jet Propulsion Laboratory/California Institute of Technology. Work was performed under contract to the National Aeronautics and Space Administration.

Michael Abrams; Simon Hook; Bhaskar Ramachandran

2002-01-01T23:59:59.000Z

135

AsterData  

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

AQL% select * from list('arrays'); SciDB Manual Please refer to the SciDB User Manual for usage of SciDB (Attached). Storage Space There is Global HOMESCRATCH on the SciDB nodes....

136

Neutron reflecting supermirror structure  

DOE Patents (OSTI)

An improved neutron reflecting supermirror structure comprising a plurality of stacked sets of bilayers of neutron reflecting materials. The improved neutron reflecting supermirror structure is adapted to provide extremely good performance at high incidence angles, i.e. up to four time the critical angle of standard neutron mirror structures. The reflection of neutrons striking the supermirror structure at a high critical angle provides enhanced neutron throughput, and hence more efficient and economical use of neutron sources.

Wood, James L. (Drayton Plains, MI)

1992-01-01T23:59:59.000Z

137

Neutron reflecting supermirror structure  

DOE Patents (OSTI)

An improved neutron reflecting supermirror structure comprising a plurality of stacked sets of bilayers of neutron reflecting materials. The improved neutron reflecting supermirror structure is adapted to provide extremely good performance at high incidence angles, i.e. up to four time the critical angle of standard neutron mirror structures. The reflection of neutrons striking the supermirror structure at a high critical angle provides enhanced neutron throughput, and hence more efficient and economical use of neutron sources. 2 figs.

Wood, J.L.

1992-12-01T23:59:59.000Z

138

Macrocyclic polyaminocarboxylates for stable radiometal antibody conjugates for therapy, SPECT and PET imaging  

DOE Patents (OSTI)

A simple method for the synthesis of 1,4,7, 10-tetraazacyclododecane N,N{prime}N{double_prime},N{prime}{double_prime}-tetraacetic acid and 1,4,8,11-tetraazacyclotetradecane N,N{prime},N{double_prime},N{prime}{double_prime}-tetraacetic acid involves cyanomethylating 1,4,7,10-tetraazacyclododecane or 1,4,8,11-tetraazacyclotetradecane to form a tetranitrile and hydrolyzing the tetranitrile. These macrocyclic compounds are functionalized through one of the carboxylates and then conjugated to various biological molecules including monoclonal antibodies. The resulting conjugated molecules are labeled with radiometals for SPECT and PET imaging and for radiotherapy. 4 figs.

Mease, R.C.; Mausner, L.F.; Srivastava, S.C.

1997-06-17T23:59:59.000Z

139

Macrocyclic polyaminocarboxylates for stable radiometal antibody conjugates for therapy, spect and pet imaging  

DOE Patents (OSTI)

A simple method for the synthesis of 1,4,7, 10-tetraazacyclododecane N,N'N",N'"-tetraacetic acid and 1,4,8,11-tetraazacyclotetradecane N,N',N",N'"-tetraacetic acid involves cyanomethylating 1,4,7, 10-tetraazacyclododecane or 1,4,8,11-tetraazacyclotetradecane to form a tetranitrile and hydrolyzing the tetranitrile. These macrocyclic compounds are functionalized through one of the carboxylates and then conjugated to various biological molecules including monoclonal antibodies. The resulting conjugated molecules are labeled with radiometals for SPECT and PET imaging and for radiotherapy.

Mease, Ronnie C. (Fairfax, VA); Mausner, Leonard F. (Stony Brook, NY); Srivastava, Suresh C. (Setauket, NY)

1997-06-17T23:59:59.000Z

140

Producing radiometals in liquid targets: Proof of feasibility with {sup 94m}Tc  

Science Conference Proceedings (OSTI)

{sup 94m}Tc was produced in a liquid target loaded with a molybdenum-salt solution. This novel technique allows for the irradiation of metals dissolved in a liquid solution, normally only available in metal powder or foil form. By using this approach, the existing liquid targets and transfer infrastructure of many PET cyclotrons can be used to produce radiometals, avoiding the need, expense and challenges of operating solid targets. Such an approach allows for rapid testing of new isotopes for proof of feasibility studies. Different concentrations of Mo solution and their effect on the target performance were tested. Sufficient quantities to allow for preclinical studies were produced.

Hoehr, C.; Badesso, B.; Morley, T.; Trinczek, M.; Buckley, K.; Klug, J.; Zeisler, S.; Hanemaayer, V.; Ruth, T. R.; Benard, F.; Schaffer, P. [TRIUMF, 4004 Wesbrook Mall, V6T 2A3 Vancouver, BC (Canada); TRIUMF, 4004 Wesbrook Mall, V6T 2A3 Vancouver, BC (Canada) and BC Cancer Agency, 600 West 10th Avenue, V5Z 4E6 Vancouver, BC (Canada); TRIUMF, 4004 Wesbrook Mall, V6T 2A3 Vancouver, BC (Canada); TRIUMF, 4004 Wesbrook Mall, V6T 2A3 Vancouver, BC (Canada) and BC Cancer Agency, 600 West 10th Avenue, V5Z 4E6 Vancouver, BC (Canada); BC Cancer Agency, 600 West 10th Avenue, V5Z 4E6 Vancouver, BC (Canada); TRIUMF, 4004 Wesbrook Mall, V6T 2A3 Vancouver, BC (Canada)

2012-12-19T23:59:59.000Z

Note: This page contains sample records for the topic "reflection radiometer aster" 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

Analysis Of Hot Springs And Associated Deposits In Yellowstone National  

Open Energy Info (EERE)

Hot Springs And Associated Deposits In Yellowstone National Hot Springs And Associated Deposits In Yellowstone National Park Using Aster And Aviris Remote Sensing Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Analysis Of Hot Springs And Associated Deposits In Yellowstone National Park Using Aster And Aviris Remote Sensing Details Activities (6) Areas (1) Regions (0) Abstract: The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) and the Airborne Visible/IR Image Spectrometer (AVIRIS) data were used to characterize hot spring deposits in the Lower, Midway, and Upper Geyser Basins of Yellowstone National Park from the visible/near infrared (VNIR) to thermal infrared (TIR) wavelengths. Field observations of these basins provided the critical ground-truth for comparison with the

142

Integration of Global Positioning System and Scanning Water Vapor Radiometers for Precipitable Water Vapor and Cloud Liquid Path Estimates  

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

Integration of Global Positioning System and Scanning Integration of Global Positioning System and Scanning Water Vapor Radiometers for Precipitable Water Vapor and Cloud Liquid Path Estimates V. Mattioli and P. Basili Department of Electronic and Information Engineering University of Perugia Perugia, Italy E. R. Westwater Cooperative Institute for Research in Environmental Sciences University of Colorado National Oceanic and Atmospheric Administration Environmental Technology Laboratory Boulder, Colorado Introduction In recent years the Global Positioning System (GPS) has proved to be a reliable instrument for measuring precipitable water vapor (PWV) (Bevis et al. 1992), offering an independent source of information on water vapor when compared with microwave radiometers (MWRs), and/or radiosonde

143

Airborne Spectral Measurements of Ocean Directional Reflectance  

Science Conference Proceedings (OSTI)

The Cloud Absorption Radiometer (CAR) was flown aboard the University of Washington Convair 580 (CV-580) research aircraft during the Chesapeake Lighthouse and Aircraft Measurements for Satellites (CLAMS) field campaign and obtained measurements ...

Charles K. Gatebe; Michael D. King; Alexei I. Lyapustin; G. Thomas Arnold; Jens Redemann

2005-04-01T23:59:59.000Z

144

Tandem resonator reflectance modulator  

DOE Patents (OSTI)

A wide band optical modulator is grown on a substrate as tandem Fabry-Perot resonators including three mirrors spaced by two cavities. The absorption of one cavity is changed relative to the absorption of the other cavity by an applied electric field, to cause a change in total reflected light, as light reflecting from the outer mirrors is in phase and light reflecting from the inner mirror is out of phase with light from the outer mirrors. 8 figs.

Fritz, I.J.; Wendt, J.R.

1994-09-06T23:59:59.000Z

145

Tandem resonator reflectance modulator  

DOE Patents (OSTI)

A wide band optical modulator is grown on a substrate as tandem Fabry-Perot resonators including three mirrors spaced by two cavities. The absorption of one cavity is changed relative to the absorption of the other cavity by an applied electric field, to cause a change in total reflected light, as light reflecting from the outer mirrors is in phase and light reflecting from the inner mirror is out of phase with light from the outer mirrors.

Fritz, Ian J. (Albuquerque, NM); Wendt, Joel R. (Albuquerque, NM)

1994-01-01T23:59:59.000Z

146

Reflective diffraction grating  

DOE Patents (OSTI)

Reflective diffraction grating. A focused ion beam (FIB) micromilling apparatus is used to store color images in a durable medium by milling away portions of the surface of the medium to produce a reflective diffraction grating with blazed pits. The images are retrieved by exposing the surface of the grating to polychromatic light from a particular incident bearing and observing the light reflected by the surface from specified reception bearing.

Lamartine, Bruce C. (Los Alamos, NM)

2003-06-24T23:59:59.000Z

147

NIST Terahertz Reflection Measurements  

Science Conference Proceedings (OSTI)

... b) Superimposed Fourier Transform amplitude and power reflection map ... laser for broadband (0.2-2.5) THz GaAs antenna generation and detection ...

2013-04-01T23:59:59.000Z

148

Neutron reflecting supermirror structure  

DOE Patents (OSTI)

An improved neutron reflecting supermirror structure comprising a plurality of stacked sets of bilayers of neutron reflecting materials. The improved neutron reflecting supermirror structure is adapted to provide extremely good performance at high incidence angles, i.e. up to four time the critical angle of standard neutron mirror structures. The reflection of neutrons striking the supermirror structure at a high critical angle provides enhanced neutron throughput, and hence more efficient and economical use of neutron sources. One layer of each set of bilayers consist of titanium, and the second layer of each set of bilayers consist of an alloy of nickel with carbon interstitially present in the nickel alloy.

Wood, James L. (Drayton Plains, MI)

1992-01-01T23:59:59.000Z

149

Radiometric Validation of ERS-1 Along-Track Scanning Radiometer Average Sea Surface Temperature in the Atlantic Ocean  

Science Conference Proceedings (OSTI)

The ERS-1 along-track scanning radiometer (ATSR) provides a half-degree latitude by half-degree longitude average sea surface temperature (ASST) measurement representative of the thermal skin layer of the ocean that is intended for use in global ...

Craig J. Donlon; Ian S. Robinson

1998-06-01T23:59:59.000Z

150

Relative Accuracy of 1-Minute and Daily Total Solar Radiation Data for 12 Global and 4 Direct Beam Solar Radiometers  

Science Conference Proceedings (OSTI)

We evaluated the relative performance of 12 global and four direct beam solar radiometers deployed at a single site over a 12-month period. Test radiometer irradiances were compared with a reference irradiance consisting of either an absolute cavity radiometer (during calibrations) or a low uncertainty thermopile pyrheliometer (during the evaluation period) for pyrheliometers; and for pyranometers a reference global irradiance computed from the reference pyrheliometer and diffuse irradiance from a shaded pyranometer. One minute averages of 3-second data for 12 months from the test instrument measurements were compared with the computed reference data set. Combined uncertainty in the computed reference irradiance is 1.8% {+-} 0.5%. Total uncertainty in the pyranometer comparisons is {+-}2.5%. We show mean percent difference between reference global irradiance and test pyranometer 1 minute data as a function of zenith angle, and percent differences between daily totals for the reference and test irradiances as a function of day number. We offer no explicit conclusion about the performance of instrument models, as a general array of applications with a wide range of instrumentation and accuracy requirements could be addressed with any of the radiometers.

Myers, D.; Wilcox, S. M.

2009-01-01T23:59:59.000Z

151

Cloud Clearing over the Ocean in the Processing of Data from the Along-Track Scanning Radiometer (ATSR)  

Science Conference Proceedings (OSTI)

Infrared radiometric measurements of surface parameters are prone to error if clouds are present in the observation path. The along-track scanning radiometer (ATSR) with its novel dual-view feature is able to correct for absorption effects in the ...

Albin M. Závody; Christopher T. Mutlow; David T. Llewellyn-Jones

2000-05-01T23:59:59.000Z

152

Reflective Insulation Handbook.  

Science Conference Proceedings (OSTI)

When reflective-foil insulation manufacturers wanted the Bonneville Power Administration (BPA) to include their products in the Residential Weatherization Program, they lacked conclusive test data to prove that their products met program specifications. Reflective foils lacked widespread acceptance because of uncertainty about their insulation values. BPA discovered that the Department of Energy (DOE) and Oak Ridge National Laboratory (ORNL) was preparing a study to test how well reflective foils reduced horizontal heat flow. Because the insulation value of reflective foils depends upon the direction of heat flow, BPA provided additional funding to test their effectiveness in reducing upward and downward heat flow and to produce this Handbook. The objectives of this study were to develop acceptable test and evaluation methods, produce an initial data base of idealized reflective-foil insulation systems, extend this data base to a limited number of commercially available products to develop and test analytical models to predict thermal performance and develop a Reflective Insulation Handbook for homeowners and insulation contractors. This handbook describes how heat is transferred; the function of an insulation; what reflective insulation is; types of reflective insulation; where it can be used; installation procedures; thermal performance; and useful sources of information. 10 figs., 2 tabs.

Desjarlais, Andre O.; Tye, Ronald P.

1990-08-01T23:59:59.000Z

153

Validation of Satellite-Derived Liquid Water Paths Using ARM SGP Microwave Radiometers  

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

Satellite-Derived Liquid Water Paths Using Satellite-Derived Liquid Water Paths Using ARM SGP Microwave Radiometers M. M. Khaiyer and J. Huang Analytical Services & Materials, Inc. Hampton, Virginia P. Minnis, B. Lin, and W. L. Smith, Jr. National Aeronautics and Space Administration Langley Research Center Hampton, Virginia A. Fan Science Applications International Corporation Hampton, Virginia A. Rapp Colorado State University Fort Collins, Colorado Introduction Satellites are useful for monitoring climatological parameters over large domains. They are especially useful for measuring various cloud microphysical and radiative parameters where ground-based instruments are not available. The geostationary operational environmental satellite (GOES) has been used to retrieve cloud and radiative properties over an extended domain centered on the Atmospheric

154

Modification of the collective Thomson scattering radiometer in the search for parametric decay on TEXTOR  

SciTech Connect

Strong scattering of high-power millimeter waves at 140 GHz has been shown to take place in heating and current-drive experiments at TEXTOR when a tearing mode is present in the plasma. The scattering signal is at present supposed to be generated by the parametric decay instability. Here we describe the heterodyne detection system used to characterize the newly discovered signal measured at TEXTOR, and we present spectral shapes in which the signal can appear under different conditions. The radiation is collected by the receiver through a quasi-optical transmission line that is independent of the electron cyclotron resonance heating transmission line, and so the scattering geometry is variable. The signal is detected with 42 frequency channels ranging from 136 to 142 GHz. We demonstrate that the large signal does not originate from gyrotron spurious radiation. The measured signal agrees well with independent backscattering radiometer data.

Nielsen, S. K.; Salewski, M.; Korsholm, S. B.; Leipold, F.; Meo, F.; Michelsen, P.; Stejner, M. [Association EURATOM - DTU, Department of Physics, Technical University of Denmark, Risoe Campus, DK-4000 Roskilde (Denmark); Bongers, W.; Moseev, D.; Westerhof, E. [FOM Institute DIFFER, Dutch Institute for Fundamental Energy Research, Association EURATOM - FOM, Nieuwegein (Netherlands); Oosterbeek, J. W. [Department of Applied Physics, Science and Technology of Nuclear Fusion, Eindhoven University of Technology, NL-5600 MB Eindhoven (Netherlands)

2012-11-15T23:59:59.000Z

155

Design of a Shadowband Spectral Radiometer for the Retrieval of Thin Cloud Optical Depth, Liquid Water Path, and the Effective Radius  

Science Conference Proceedings (OSTI)

The design and operation of a Thin-Cloud Rotating Shadowband Radiometer (TCRSR) described here was used to measure the radiative intensity of the solar aureole and enable the simultaneous retrieval of cloud optical depth, drop effective radius, ...

M. J. Bartholomew; R. M. Reynolds; A. M. Vogelmann; Q. Min; R. Edwards; S. Smith

2011-11-01T23:59:59.000Z

156

Performance of Commercial Radiometers in Very Low Temperature and Pressure Environments Typical of Polar Regions and of the Stratosphere: A Laboratory Study  

Science Conference Proceedings (OSTI)

Characterizing the performance of ground-based commercial radiometers in cold and/or low-pressure environments is critical for developing accurate flux measurements in the polar regions and in the upper troposphere and stratosphere. Commercially ...

Wenying Su; Ellsworth Dutton; Thomas P. Charlock; Warren Wiscombe

2008-04-01T23:59:59.000Z

157

Rain/No-Rain Classification Methods for Microwave Radiometer Observations over Land Using Statistical Information for Brightness Temperatures under No-Rain Conditions  

Science Conference Proceedings (OSTI)

One of the goals of the Global Precipitation Measurement project, the successor to the Tropical Rainfall Measuring Mission (TRMM), is to produce a 3-hourly global rainfall map using several spaceborne microwave radiometers. It is important, ...

Shinta Seto; Nobuhiro Takahashi; Toshio Iguchi

2005-08-01T23:59:59.000Z

158

A Study of a Retrieval Method for Temperature and Humidity Profiles from Microwave Radiometer Observations Based on Principal Component Analysis and Stepwise Regression  

Science Conference Proceedings (OSTI)

This paper discusses the application of principal component analysis and stepwise regression in the retrieval of vertical profiles of temperature and humidity based on the measurements of a 35-channel microwave radiometer. It uses the radiosonde ...

Haobo Tan; Jietai Mao; Huanhuan Chen; P. W. Chan; Dui Wu; Fei Li; Tao Deng

2011-03-01T23:59:59.000Z

159

Scientific Basis and Initial Evaluation of the CLAVR-1 Global Clear/Cloud Classification Algorithm for the Advanced Very High Resolution Radiometer  

Science Conference Proceedings (OSTI)

An algorithm for the remote sensing of global cloud cover using multispectral radiance measurements from the Advanced Very High Resolution Radiometer (AVHRR) on board National Oceanic and Atmospheric Administration (NOAA) polar-orbiting ...

Larry L. Stowe; Paul A. Davis; E. Paul McClain

1999-06-01T23:59:59.000Z

160

Experimental Determination of Water Vapor Profiles from Ground-Based Radiometer Measurements at 21.0 and 31.4 GHz.  

Science Conference Proceedings (OSTI)

Water vapor profiles have been obtained from radiometer measurements at 21.0 and 31.4 GHz and ground values of humidity, temperature and pressure. The inversion technique was based on minimum variance estimation, including constraints derived ...

B. G. Skoog; J. I. H. Askne; G. Elgered

1982-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "reflection radiometer aster" 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

Radiative Flux Estimation from a Broadband Radiometer Using Synthetic Angular Models in the EarthCARE Mission Framework. Part II: Evaluation  

Science Conference Proceedings (OSTI)

The instantaneous top-of-atmosphere (TOA) radiance-to-flux conversion for the broadband radiometer (BBR) on board the Earth Clouds, Aerosols, and Radiation Explorer (EarthCARE) was assessed in Part I of this paper, by developing theoretical ...

Carlos Domenech; Ernesto Lopez-Baeza; David P. Donovan; Tobias Wehr

2012-09-01T23:59:59.000Z

162

Radiometer and Profiler Analysis of the Effects of a Bore and a Solitary Wave on the Stability of the Nocturnal Boundary Layer  

Science Conference Proceedings (OSTI)

This study uses data from a microwave profiling radiometer (MPR), along with 915-MHz wind profiler, Doppler radar, and surface data to quantify the kinematic and thermodynamic effects of two wave features, an undular bore and a soliton, on the ...

Timothy A. Coleman; Kevin R. Knupp

2011-01-01T23:59:59.000Z

163

Retrieval of Key Aerosol Optical Parameters from Spectral Direct and Diffuse Irradiances Observed by a Radiometer with Nonideal Cosine Response Characteristic  

Science Conference Proceedings (OSTI)

The spectral direct and diffuse irradiances observed by a radiometer with a horizontal surface detector have been frequently used to study aerosol optical parameters, such as aerosol optical thickness (?aer) and single scattering albedo (?). Such ...

Pradeep Khatri; Tamio Takamura; Akihiro Yamazaki; Yutaka Kondo

2012-05-01T23:59:59.000Z

164

Remotely Controlled, Continuous Observations of Infrared Radiance with the CSIRO/ARM Mark II Radiometer at the SGP CART Site  

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

Remotely Controlled, Continuous Observations of Remotely Controlled, Continuous Observations of Infrared Radiance with the CSIRO/ARM Mark II Radiometer at the SGP CART Site C. M. R. Platt and R. T. Austin Department of Atmospheric Science Colorado State University Fort Collins, Colorado C. M. R. Platt and J. A. Bennett Commonwealth Scientific and Industrial Research Organization Atmospheric Research Aspendale, Victoria, Australia Abstract The Commonwealth Scientific and Industrial Research Organization/Atmospheric Radiation Measurement (CSIRO/ARM) Program Mark II infrared (IR) filter radiometer operated continuously at the Southern Great Plains (SGP) Cloud and Radiation Testbed (CART) site for a period of five weeks. Data of high quality were obtained by remote operation and data transfer with no evidence of spurious

165

Shape optimization using reflection lines  

Science Conference Proceedings (OSTI)

Many common objects have highly reflective metallic or painted finishes. Their appearance is primarily defined by the distortion the curved shape of the surface introduces in the reflections of surrounding objects. Reflection lines are commonly used ...

E. Tosun; Y. I. Gingold; J. Reisman; D. Zorin

2007-07-01T23:59:59.000Z

166

Comparison of Historical Satellite-Based Estimates of Solar Radiation Resources with Recent Rotating Shadowband Radiometer Measurements: Preprint  

DOE Green Energy (OSTI)

The availability of rotating shadow band radiometer measurement data at several new stations provides an opportunity to compare historical satellite-based estimates of solar resources with measurements. We compare mean monthly daily total (MMDT) solar radiation data from eight years of NSRDB and 22 years of NASA hourly global horizontal and direct beam solar estimates with measured data from three stations, collected after the end of the available resource estimates.

Myers, D. R.

2009-03-01T23:59:59.000Z

167

Method to Calculate Uncertainty Estimate of Measuring Shortwave Solar Irradiance using Thermopile and Semiconductor Solar Radiometers  

DOE Green Energy (OSTI)

The uncertainty of measuring solar irradiance is fundamentally important for solar energy and atmospheric science applications. Without an uncertainty statement, the quality of a result, model, or testing method cannot be quantified, the chain of traceability is broken, and confidence cannot be maintained in the measurement. Measurement results are incomplete and meaningless without a statement of the estimated uncertainty with traceability to the International System of Units (SI) or to another internationally recognized standard. This report explains how to use International Guidelines of Uncertainty in Measurement (GUM) to calculate such uncertainty. The report also shows that without appropriate corrections to solar measuring instruments (solar radiometers), the uncertainty of measuring shortwave solar irradiance can exceed 4% using present state-of-the-art pyranometers and 2.7% using present state-of-the-art pyrheliometers. Finally, the report demonstrates that by applying the appropriate corrections, uncertainties may be reduced by at least 50%. The uncertainties, with or without the appropriate corrections might not be compatible with the needs of solar energy and atmospheric science applications; yet, this report may shed some light on the sources of uncertainties and the means to reduce overall uncertainty in measuring solar irradiance.

Reda, I.

2011-07-01T23:59:59.000Z

168

Solar Reflectance Index Calculator  

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

Reflectance Index Calculator Reflectance Index Calculator ASTM Designation: E 1980-01 Enter A State: Select a state Alabama Alaska Arkansas Arizona California Colorado Connecticut Delaware Florida Georgia Hawaii Iowa Idaho Illinois Indiana Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana North Carolina North Dakota Nebraska Nevada New Hampshire New Jersey New Mexico New York Ohio Oklahoma Oregon Pennsylvania Pacific Islands Puerto Rico Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington Wisconsin West Virginia Wyoming Canadian Cities Enter A City: Select a city Wind Speed (mph) Wind Speed (m/s) Please input both the SR and the TE and the convection coeficient and surface temperature will be calculated

169

Polarizer reflectivity variations  

SciTech Connect

On Shiva the beam energy along the chain is monitored using available reflections and/or transmission through beam steering, splitting, and polarizing optics without the intrusion of any additional glass for diagnostics. On the preamp table the diagnostic signal is obtained from the signal transmitted through turning mirrors. At the input of each chain the signal is obtained from the transmission through one of the mirrors used for the chain input alignment sensor (CHIP). At the chain output the transmission through the final turning mirror is used. These diagnostics have proved stable and reliable. However, one of the prime diagnostic locations is at the output of the beta rod. The energy at this location is measured by collecting small reflections from the last polarizer surface of the beta Pockels cell polarizer package. Unfortunately, calibration of this diagnostic has varied randomly, seldom remaining stable for a week or more. The cause of this fluctuation has been investigated for the past year and'it has been discovered that polarizer reflectivity varies with humidity. This report will deal with the possible causes that were investigated, the evidence that humidity is causing the variation, and the associated mechanism.

Ozarski, R.G.; Prior, J.

1980-02-22T23:59:59.000Z

170

Microwave Properties of Ice-Phase Hydrometeors for Radar and Radiometers: Sensitivity to Model Assumptions  

Science Conference Proceedings (OSTI)

A simplified framework is presented for assessing the qualitative sensitivities of computed microwave properties, satellite brightness temperatures, and radar reflectivities to assumptions concerning the physical properties of ice-phase ...

Benjamin T. Johnson; Grant W. Petty; Gail Skofronick-Jackson

2012-12-01T23:59:59.000Z

171

Synthesis of macrocyclic polyaminocarboxylates and their use for preparing stable radiometal antibody immunoconjugates for therapy, SPECT and PET imaging  

DOE Patents (OSTI)

A simple method for the synthesis of 1,4,7,10-tetraazacyclododecane N,N{prime}N{double_prime},N{prime}{double_prime}-tetraacetic acid and 1,4,8,11-tetraazacyclotetradecane N,N{prime},N{double_prime},N{prime}{double_prime}-tetraacetic acid involves cyanomethylating 1,4,7,10-tetraazacyclododecane or 1,4,8,11-tetraazacyclotetradecane to form a tetranitrile and hydrolyzing the tetranitrile. These macrocyclic compounds are functionalized through one of the carboxylates and then conjugated to various biological molecules including monoclonal antibodies. The resulting conjugated molecules are labeled with radiometals for SPECT and PET imaging and for radiotherapy. 4 figs.

Mease, R.C.; Mausner, L.F.; Srivastava, S.C.

1995-06-27T23:59:59.000Z

172

Global distributions of total ozone during January and February 1979 as determined from DMSP multichannel filter radiometer measurements  

Science Conference Proceedings (OSTI)

The multichannel filter radiometer instrument (MFR) was first flown on a Defense Meteorological Satellite Program (DMSP) Block 5D series satellite in 1977. Daily analyses of the global distribution of retrieved total ozone are presented for January and February 1979. The temporal and spatial averages and variability of ozone during this period are discussed. Retrieved total column ozone data derived from the MFR measurements for January 1979 are compared with preliminary SBUV measurements and with distributions of total ozone measured between 1958 and 1967.

Luther, F.M.; Ellis, J.S.; Lovill, J.E.; Sullivan, T.J.; Weichel, R.L.

1980-09-01T23:59:59.000Z

173

Results of First Outdoor Comparison Between Absolute Cavity Pyrgeometer (ACP) and Infrared Integrating Sphere (IRIS) Radiometer at PMOD (Presentation)  

DOE Green Energy (OSTI)

The ACP and IRIS are developed to establish a world reference for calibrating pyrgeometers with traceability to SI units. The two radiometers are unwindowed with negligible spectral dependence, and traceable to SI units through the temperature scale (ITS-90). The first outdoor comparison between the two designs was held from January 28 to February 8, 2013 at the Physikalisch-Metorologisches Observatorium Davos (PMOD). The difference between the irradiance measured by ACP and that of IRIS was within 1 W/m2. A difference of 5 W/m2 was observed between the irradiance measured by ACP&IRIS and that of the interim World Infrared Standard Group (WISG).

Reda, I.; Grobner, J.; Wacker, S.; Stoffel, T.

2013-03-01T23:59:59.000Z

174

Synthesis of macrocyclic polyaminocarboxylates and their use for preparing stable radiometal antibody immunoconjugates for therapy, spect and pet imaging  

DOE Patents (OSTI)

A simple method for the synthesis of 1,4,7,10-tetraazacyclododecane N,N'N",N'"-tetraacetic acid and 1,4,8,11-tetraazacyclotetradecane N,N',N",N'"-tetraacetic acid involves cyanomethylating 1,4,7,10-tetraazacyclododecane or 1,4,8,11-tetraazacyclotetradecane to form a tetranitrile and hydrolyzing the tetranitrile. These macrocyclic compounds are functionalized through one of the carboxylates and then conjugated to various biological molecules including monoclonal antibodies. The resulting conjugated molecules are labeled with radiometals for SPECT and PET imaging and for radiotherapy.

Mease, Ronnie C. (Fairfax, VA); Mausner, Leonard F. (Stony Brook, NY); Srivastava, Suresh C. (Setauket, NY)

1995-06-27T23:59:59.000Z

175

Documentation : a reflective practice approach  

E-Print Network (OSTI)

The Center for Reflective Community Practice in MIT's Department of Urban studies is involved in projects helping community organizers working on social change. In order to foster reflection, they are currently utilizing ...

Ouko, Luke Odhiambo

2005-01-01T23:59:59.000Z

176

Generalization of Lambert's reflectance model  

Science Conference Proceedings (OSTI)

Lambert's model for body reflection is widely used in computer graphics. It is used extensively by rendering techniques such as radiosity and ray tracing. For several real-world objects, however, Lambert's model can prove to be a very inaccurate approximation ... Keywords: BRDF, Lambert's model, moon reflectance, reflection models, rough surfaces

Michael Oren; Shree K. Nayar

1994-07-01T23:59:59.000Z

177

MISMATCHES CREATE REFLECTIONS  

E-Print Network (OSTI)

Unlike low-power, metal-gate CMOS, high-speed 54HC/74HC devices readily drive long cable runs and backplanes. While the family maintains CMOS’s traditional noise immunity, you must watch transmission-line effects in such applications. Because of 54HC/74HC high-speed CMOS’s short propagation delays and fast rise and fall times, you must understand its transmission-line behavior when driving lines as short as even a foot or two, whether those lines are coaxial cables, twisted pairs or backplanes. Moreover, the devices ’ fast edge rates increase the likelihood of crosstalk among interconnecting cables. Despite the need, however, to take design precautions that minimize adverse effects related to high-speed operation, 54HC/74HC logic—unlike slower metal-gate CMOS—includes many features that suit it to driving transmission lines. For example, its symmetrical push-pull outputs result in stiff logic levels, and its high output drive allows fast bit rates. Another advantage of high-speed-CMOS designs is that they don’t prove to be as difficult as those based on other high-speed logic families. In general, high-speed CMOS doesn’t require the detailed attention to pc-board layout and transmission-line characteristics that Schottky TTL or ECL designs do. Furthermore, controlling unwanted reflections is easier in the CMOS designs, because 54HC/74HC devices’ electrostatic-protection diodes tend to clamp the reflected voltages to the power-supply levels.

unknown authors

1985-01-01T23:59:59.000Z

178

ARM - Midlatitude Continental Convective Clouds Microwave Radiometer Profiler (jensen-mwr)  

DOE Data Explorer (OSTI)

A major component of the Mid-latitude Continental Convective Clouds Experiment (MC3E) field campaign was the deployment of an enhanced radiosonde array designed to capture the vertical profile of atmospheric state variables (pressure, temperature, humidity wind speed and wind direction) for the purpose of deriving the large-scale forcing for use in modeling studies. The radiosonde array included six sites (enhanced Central Facility [CF-1] plus five new sites) launching radiosondes at 3-6 hour sampling intervals. The network will cover an area of approximately (300)2 km2 with five outer sounding launch sites and one central launch location. The five outer sounding launch sites are: S01 Pratt, KS [ 37.7oN, 98.75oW]; S02 Chanute, KS [37.674, 95.488]; S03 Vici, Oklahoma [36.071, -99.204]; S04 Morris, Oklahoma [35.687, -95.856]; and S05 Purcell, Oklahoma [34.985, -97.522]. Soundings from the SGP Central Facility during MC3E can be retrieved from the regular ARM archive. During routine MC3E operations 4 radiosondes were launched from each of these sites (approx. 0130, 0730, 1330 and 1930 UTC). On days that were forecast to be convective up to four additional launches were launched at each site (approx. 0430, 1030, 1630, 2230 UTC). There were a total of approximately 14 of these high frequency launch days over the course of the experiment. These files contain brightness temperatures observed at Purcell during MC3E. The measurements were made with a 5 channel (22.235, 23.035, 23.835, 26.235, 30.000GHz) microwave radiometer at one minute intervals. The results have been separated into daily files and the day of observations is indicated in the file name. All observations were zenith pointing. Included in the files are the time variables base_time and time_offset. These follow the ARM time conventions. Base_time is the number seconds since January 1, 1970 at 00:00:00 for the first data point of the file and time_offset is the offset in seconds from base_time.

Mike Jensen

179

ARM - Midlatitude Continental Convective Clouds Microwave Radiometer Profiler (jensen-mwr)  

SciTech Connect

A major component of the Mid-latitude Continental Convective Clouds Experiment (MC3E) field campaign was the deployment of an enhanced radiosonde array designed to capture the vertical profile of atmospheric state variables (pressure, temperature, humidity wind speed and wind direction) for the purpose of deriving the large-scale forcing for use in modeling studies. The radiosonde array included six sites (enhanced Central Facility [CF-1] plus five new sites) launching radiosondes at 3-6 hour sampling intervals. The network will cover an area of approximately (300)2 km2 with five outer sounding launch sites and one central launch location. The five outer sounding launch sites are: S01 Pratt, KS [ 37.7oN, 98.75oW]; S02 Chanute, KS [37.674, 95.488]; S03 Vici, Oklahoma [36.071, -99.204]; S04 Morris, Oklahoma [35.687, -95.856]; and S05 Purcell, Oklahoma [34.985, -97.522]. Soundings from the SGP Central Facility during MC3E can be retrieved from the regular ARM archive. During routine MC3E operations 4 radiosondes were launched from each of these sites (approx. 0130, 0730, 1330 and 1930 UTC). On days that were forecast to be convective up to four additional launches were launched at each site (approx. 0430, 1030, 1630, 2230 UTC). There were a total of approximately 14 of these high frequency launch days over the course of the experiment. These files contain brightness temperatures observed at Purcell during MC3E. The measurements were made with a 5 channel (22.235, 23.035, 23.835, 26.235, 30.000GHz) microwave radiometer at one minute intervals. The results have been separated into daily files and the day of observations is indicated in the file name. All observations were zenith pointing. Included in the files are the time variables base_time and time_offset. These follow the ARM time conventions. Base_time is the number seconds since January 1, 1970 at 00:00:00 for the first data point of the file and time_offset is the offset in seconds from base_time.

Mike Jensen

2012-02-01T23:59:59.000Z

180

Mapping evaporate minerals by ASTER  

Science Conference Proceedings (OSTI)

Evaporate minerals are important industrial raw materials that have been used in diverse industries for many years. As one of the most extensively used evaporate minerals, gypsum is an important raw material in the construction, agriculture, textile, ...

N. Serkan Oztan; M. Lutfi Suzen

2011-03-01T23:59:59.000Z

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


181

LBA-ECO Data Sets Released, January 2007  

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

announces the release of two data sets associated with the announces the release of two data sets associated with the LBA-ECO component of the Large Scale Biosphere-Atmosphere Experiment in Amazonia (LBA). The data set entitled "LBA-ECO TG-07 Forest Structure Measurements for GLAS Validation: Santarem 2004" provides the results of GLAS (the Geoscience Laser Altimer System) forest structure validation surveys conducted along transects at the Santarem and Sao Jorge forest sites. The data set entitled "LBA-ECO LC-23 ASTER and MODIS Fire Data Comparison for Brazil: 2003-2004" provides data associated with MODIS (Moderate Resolution Imaging Spectroradiometer) fire maps generated using two different algorithms and compared against fire maps produced by ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer). One

182

Variable area light reflecting assembly  

DOE Patents (OSTI)

Device is described for tracking daylight and projecting it into a building. The device tracks the sun and automatically adjusts both the orientation and area of the reflecting surface. The device may be mounted in either a wall or roof of a building. Additionally, multiple devices may be employed in a light shaft in a building, providing daylight to several different floors. The preferred embodiment employs a thin reflective film as the reflecting device. One edge of the reflective film is fixed, and the opposite end is attached to a spring-loaded take-up roller. As the sun moves across the sky, the take-up roller automatically adjusts the angle and surface area of the film. Additionally, louvers may be mounted at the light entrance to the device to reflect incoming daylight in an angle perpendicular to the device to provide maximum reflective capability when daylight enters the device at non-perpendicular angles. 9 figs.

Howard, T.C.

1986-12-23T23:59:59.000Z

183

Variable area light reflecting assembly  

DOE Patents (OSTI)

Device for tracking daylight and projecting it into a building. The device tracks the sun and automatically adjusts both the orientation and area of the reflecting surface. The device may be mounted in either a wall or roof of a building. Additionally, multiple devices may be employed in a light shaft in a building, providing daylight to several different floors. The preferred embodiment employs a thin reflective film as the reflecting device. One edge of the reflective film is fixed, and the opposite end is attached to a spring-loaded take-up roller. As the sun moves across the sky, the take-up roller automatically adjusts the angle and surface area of the film. Additionally, louvers may be mounted at the light entrance to the device to reflect incoming daylight in an angle perpendicular to the device to provide maximum reflective capability when daylight enters the device at non-perpendicular angles.

Howard, Thomas C. (Raleigh, NC)

1986-01-01T23:59:59.000Z

184

Accurate Liquid Water Path Retrieval from Low-Cost Microwave Radiometers Using Additional Information from a Lidar Ceilometer and Operational Forecast Models  

Science Conference Proceedings (OSTI)

Water clouds have an important impact on the radiative balance of the earth. The use of ground-based dual-frequency microwave radiometers to derive both liquid water path (LWP) and water vapor path (WVP) is well established, but uncertainties ...

Nicolas Gaussiat; Robin J. Hogan; Anthony J. Illingworth

2007-09-01T23:59:59.000Z

185

GVR (G-Band Vapor Radiometer) M.P. Cadeddu and J.C. Liljegren Argonne Natl. Laboratory  

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

ARM 90/150 GHz data at ARM 90/150 GHz data at COPS M.P. Cadeddu, A. Vogelmann, D.D. Turner, S. Crewell, U. Lönhert MWRHF (90/150) data Data available at archives from 06/22 to 12/31 Challenges associated with instrument: New instrument - new technology We still need to learn about calibration Spectral region (WV continuum) still uncertain in models Data available at archives from 06/22 to 12/31 Challenges associated with instrument: New instrument - new technology We still need to learn about calibration Spectral region (WV continuum) still uncertain in models Weather conditions were not ideal for the initial testing of the instrument. The radiometer did not calibrate from 06/30 until 10/13 The few calibrations in June may have been affected by dew formation Calibration of summer data is

186

Ultrasonic flowmetering with reflected pulses  

E-Print Network (OSTI)

A transit time type ultrasonic flowmeter was tested with two different reflected pulse trajectories in flowing air at ambient conditions against an orifice meter. The flowmeter was designed to be highly accurate, to require ...

Hoyle, David C.

1984-01-01T23:59:59.000Z

187

Radar Reflectivity of Cumulus Clouds  

Science Conference Proceedings (OSTI)

The relationships between the radar reflectivity factor Z and significant physical cloud parameters are studied from a dataset collected with an instrumented aircraft in non- or very weakly precipitating warm clouds. The cloud droplet populations ...

Henri Sauvageot; Jilani Omar

1987-06-01T23:59:59.000Z

188

Ground Reflections and Green Thunderstorms  

Science Conference Proceedings (OSTI)

It has been suggested that green light often observed in association with severe thunderstorms is caused by sunlight being reflected onto the cloud by green vegetation. Colorimetric observations were recorded of green-colored and blue-colored ...

Frank W. Gallagher III

2001-04-01T23:59:59.000Z

189

Monitoring of Precipitable Water Vapor and Cloud Liquid Path from Scanning Microwave Radiometers During the 2003 Cloudiness Inter-Comparison Experiment  

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

Monitoring of Precipitable Water Vapor and Cloud Liquid Monitoring of Precipitable Water Vapor and Cloud Liquid Path from Scanning Microwave Radiometers During the 2003 Cloudiness Inter-Comparison Experiment V. Mattioli Department of Electronic and Information Engineering University of Perugia Perugia, Italy E. R. Westwater Cooperative Institute for Research in Environmental Sciences University of Colorado National Oceanic and Atmospheric Administration Environmental Technology Laboratory Boulder, Colorado V. Morris Pacific Northwest National Laboratory Richland, Washington Introduction Ground-based microwave radiometers (MWR) are widely used to measure atmospheric precipitable water vapor (PWV) and cloud liquid path (CLP). Comparisons of PWV derived from MWRs with water vapor retrievals from instruments like radiosondes, Global Positioning System (GPS) and Raman

190

Prototype Validation Exercise (PROVE) Project  

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

Validation > PROVE Validation > PROVE The Prototype Validation Exercise (PROVE) Project Overview The Prototype Validation Exercise (PROVE) was a mini field campaign conducted at the Jornada Experimental Range in the Chihuahuan Desert, near Las Cruces, New Mexico in May 1997. The goals of PROVE were to: Gain experience in the collection and use of field data for EOS product validation Develop protocols for coordination, measurement, and data archival Compile a synoptic land and atmospheric data set for testing algorithms The remote-sensing portion of PROVE involved investigators from three NASA Earth Observing System (EOS) instrument teams: MODIS (Moderate-Resolution Imaging Spectrometer) ASTER (Advanced Space-borne Thermal Emission and Reflectance Radiometer) MISR (Multi-Angle Imaging Spectro Radiometer)

191

Did 1998 Reflect Structural Change?  

Gasoline and Diesel Fuel Update (EIA)

Did 1998 Reflect Structural Change? Did 1998 Reflect Structural Change? 5/17/99 Click here to start Table of Contents PPT Slide Did 1998 Reflect Structural Change? Demand U.S. Propane Demand Sectors (1996) PPT Slide 1998 Propane Prices Fell with Crude Oil PPT Slide Warm Weather Behind Demand Decline 1998 Warm Weather Kept Demand Down Supply Propane Production Fell in 1998 1998 Propane Net Imports Increased Algeria Was Major Source of ‘98 Import Increase U.S. Chemical Use & Large Storage Attracts Excess Propane Petroleum & Propane Market Over Supply Average Stock Levels: Crude Market & Propane Futures Market Incentives to Build Petroleum Stocks New “Structure” or Cycle? Near-Term Future Large January Draw Did Not Remove Excess How Might Excess Stocks Decline? Near Term U.S. Propane Production

192

Reflection Survey | Open Energy Information  

Open Energy Info (EERE)

Page Page Edit with form History Facebook icon Twitter icon » Reflection Survey Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Reflection Survey Details Activities (35) Areas (22) Regions (2) NEPA(3) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Seismic Techniques Parent Exploration Technique: Active Seismic Techniques Information Provided by Technique Lithology: Rock unit density influences elastic wave velocities. Stratigraphic/Structural: Structural geology- faults, folds, grabens, horst blocks, sedimentary layering, discontinuities, etc. Hydrological: Combining compressional and shear wave results can indicate the presence of fluid saturation in the formation. Thermal: High temperatures and pressure impact the compressional and shear wave velocities.

193

Aging of reflective roofs: soot deposition  

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

Aging of reflective roofs: soot deposition Title Aging of reflective roofs: soot deposition Publication Type Journal Article Year of Publication 2002 Authors Berdahl, Paul, Hashem...

194

Cumulus Clouds and Reflected Sunlight  

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

Cumulus Clouds and Reflected Sunlight Cumulus Clouds and Reflected Sunlight from Landsat ETM+ G. Wen and L. Oreopoulos National Aeronautics and Space Administration Goddard Space Flight Center University of Maryland Baltimore County Joint Center of Earth System Technology Greenbelt, Maryland R. F. Cahalan and S. C. Tsay National Aeronautics and Space Administration Goddard Space Flight Center Greenbelt, Maryland Introduction Cumulus clouds attenuate solar radiation casting shows on the ground. Cumulus clouds can also enhance solar radiation in the clear region nearby. The enhancement of down-welling solar radiation has been observed at the ground level in the clear region near cumulus clouds (Mims and Frederick 1994). The additional diffuse radiation source from cumulus clouds makes the clear gaps appear to be

195

Design of a Shadowband Spectral Radiometer for the Retrieval of Thin Cloud Optical Depth, Liquid Water Path, and the Effective Radius  

SciTech Connect

The design and operation of a Thin-Cloud Rotating Shadowband Radiometer (TCRSR) described here was used to measure the radiative intensity of the solar aureole and enable the simultaneous retrieval of cloud optical depth, drop effective radius, and liquid water path. The instrument consists of photodiode sensors positioned beneath two narrow metal bands that occult the sun by moving alternately from horizon to horizon. Measurements from the narrowband 415-nm channel were used to demonstrate a retrieval of the cloud properties of interest. With the proven operation of the relatively inexpensive TCRSR instrument, its usefulness for retrieving aerosol properties under cloud-free skies and for ship-based observations is discussed.

Bartholomew M. J.; Reynolds, R. M.; Vogelmann, A. M.; Min, Q.; Edwards, R.; Smith, S.

2011-11-01T23:59:59.000Z

196

MWRRET Value-Added Product: The Retrieval of Liquid Water Path and Precipitable Water Vapor from Microwave Radiometer (MWR) Data Sets (Revision 2)  

SciTech Connect

This report provides a short description of the Atmospheric Radiation Measurement (ARM) Climate Research Facility microwave radiometer (MWR) Retrieval (MWRRET) value-added product (VAP) algorithm. This algorithm utilizes a complementary physical retrieval method and applies brightness temperature offsets to reduce spurious liquid water path (LWP) bias in clear skies resulting in significantly improved precipitable water vapor (PWV) and LWP retrievals. We present a general overview of the technique, input parameters, output products, and describe data quality checks. A more complete discussion of the theory and results is given in Turner et al. (2007b).

Gaustad, KL; Turner, DD; McFarlane, SA

2011-07-25T23:59:59.000Z

197

Discharge lamp with reflective jacket  

DOE Patents (OSTI)

A discharge lamp includes an envelope, a fill which emits light when excited disposed in the envelope, a source of excitation power coupled to the fill to excite the fill and cause the fill to emit light, and a reflector disposed around the envelope and defining an opening, the reflector being configured to reflect some of the light emitted by the fill back into the fill while allowing some light to exit through the opening. The reflector may be made from a material having a similar thermal index of expansion as compared to the envelope and which is closely spaced to the envelope. The envelope material may be quartz and the reflector material may be either silica or alumina. The reflector may be formed as a jacket having a rigid structure which does not adhere to the envelope. The lamp may further include an optical clement spaced from the envelope and configured to reflect an unwanted component of light which exited the envelope back into the envelope through the opening in the reflector. Light which can be beneficially recaptured includes selected wavelength regions, a selected polarization, and selected angular components.

MacLennan, Donald A. (Gaithersburg, MD); Turner, Brian P. (Damascus, MD); Kipling, Kent (Gaithersburg, MD)

2001-01-01T23:59:59.000Z

198

Spatial Convergence of Bidirectional Reflectance Models  

Science Conference Proceedings (OSTI)

Analyses of bidirectional reflectance data are presented with implications regarding the spatial scales appropriate for inferring irradiances from radiances reflected by various surface–atmosphere scenes. Multiple-angle radiance data collected in ...

John M. Davis; Stephen K. Cox

1998-10-01T23:59:59.000Z

199

Semantic Models for Distributed Object Reflection  

Science Conference Proceedings (OSTI)

A generic formal model of distributed object reflection is proposed, that combines logical reflection with a structuring of distributed objects as nested configurations of metaobject that can control subobjects under them. The model provides mathematical ...

José Meseguer; Carolyn L. Talcott

2002-06-01T23:59:59.000Z

200

Reflective coatings for solar applications  

DOE Green Energy (OSTI)

Many applications of solar energy require large mirrors to provide high levels of concentrated sunlight. The success of such conversion systems hinges on the optical durability and economic viability of the reflector materials. A major effort at the National Renewable Energy Laboratory (NREL) has been to improve the existing reflector materials technology and to identify candidates that retain optical performance and durability criteria and offer potential for reduced cost. To attain the goals, it is desirable to maintain and increase the involvement of industrial organizations in reflective materials R&D related to the conversion of solar resources to useful energy. Toward this end, NREL has recently initiated several collaborative efforts with industry to develop advanced reflector materials.

Jorgensen, G.

1993-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "reflection radiometer aster" 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

Reflective coatings for solar applications  

DOE Green Energy (OSTI)

Many applications of solar energy require large mirrors to provide high levels of concentrated sunlight. The success of such conversion systems hinges on the optical durability and economic viability of the reflector materials. A major effort at the National Renewable Energy Laboratory (NREL) has been to improve the existing reflector materials technology and to identify candidates that retain optical performance and durability criteria and offer potential for reduced cost. To attain the goals, it is desirable to maintain and increase the involvement of industrial organizations in reflective materials R D related to the conversion of solar resources to useful energy. Toward this end, NREL has recently initiated several collaborative efforts with industry to develop advanced reflector materials.

Jorgensen, G.

1993-05-01T23:59:59.000Z

202

Reflective ghost imaging through turbulence  

SciTech Connect

Recent work has indicated that ghost imaging may have applications in standoff sensing. However, most theoretical work has addressed transmission-based ghost imaging. To be a viable remote-sensing system, the ghost imager needs to image rough-surfaced targets in reflection through long, turbulent optical paths. We develop, within a Gaussian-state framework, expressions for the spatial resolution, image contrast, and signal-to-noise ratio of such a system. We consider rough-surfaced targets that create fully developed speckle in their returns and Kolmogorov-spectrum turbulence that is uniformly distributed along all propagation paths. We address both classical and nonclassical optical sources, as well as a computational ghost imager.

Hardy, Nicholas D.; Shapiro, Jeffrey H. [Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

2011-12-15T23:59:59.000Z

203

The Advantages of Wearable Green Reflected Photoplethysmography  

Science Conference Proceedings (OSTI)

This report evaluates the efficacy of reflected-type green light photoplethysmography (green light PPG). Transmitted infrared light was used for PPG and the arterial pulse was monitored transcutaneously. The reflected PPG signal contains AC components ... Keywords: Green light, Heat stress, Infrared light, Photoplethysmography, Reflection

Yuka Maeda; Masaki Sekine; Toshiyo Tamura

2011-10-01T23:59:59.000Z

204

MWRRET (Microwave Radiometer Retrievals)  

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

Plus Plus Plus Andy Vogelmann, Dave Turner Andy Vogelmann, Dave Turner & Jennifer Comstock & Jennifer Comstock Min Min Susanne Crewell Susanne Crewell Ulrich L Ulrich L ö ö rnard rnard Jim Liljegren Jim Liljegren John Ogre John Ogre . Y. Matrosov . Y. Matrosov Sally McFarlane Sally McFarlane Warren Wiscombe, Christine Chiu, Sasha Marshak, Maria Warren Wiscombe, Christine Chiu, Sasha Marshak, Maria Cadeddu, Qilong Min, Susanne Crewell, Ulrich L Cadeddu, Qilong Min, Susanne Crewell, Ulrich L ö ö hnert, Mandy hnert, Mandy M. Khaiyer, Greg McFarquhar , Chuck Long, Bill O M. Khaiyer, Greg McFarquhar , Chuck Long, Bill O ' ' Hirok, Bin Hirok, Bin Lin, Connor Flynn, Eli Mlawer, Graham Feingold, Jim Barnard, Lin, Connor Flynn, Eli Mlawer, Graham Feingold, Jim Barnard,

205

Reflection Survey (Nannini, 1986) | Open Energy Information  

Open Energy Info (EERE)

Reflection Survey (Nannini, 1986) Reflection Survey (Nannini, 1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Reflection Survey (Nannini, 1986) Exploration Activity Details Location Unspecified Exploration Technique Reflection Survey Activity Date Usefulness could be useful with more improvements DOE-funding Unknown Notes "seismic analyses" - no indication of active/passive, reflection/refraction, etc. ---> "On the contrary, in areas with little or no volcanic activity, assumptions on the nature, size and characteristics of the source of the thermal anomaly are generally much more difficult and hypothetical. In these circumstances, some useful data can be obtained from accurate seismic analyses, together with a seismotectonic and geodynamic

206

Condenser optic with sacrificial reflective surface  

Science Conference Proceedings (OSTI)

Employing collector optics that has a sacrificial reflective surface can significantly prolong the useful life of the collector optics and the overall performance of the condenser in which the collector optics are incorporated. The collector optics is normally subject to erosion by debris from laser plasma source of radiation. The presence of an upper sacrificial reflective surface over the underlying reflective surface effectively increases the life of the optics while relaxing the constraints on the radiation source. Spatial and temporally varying reflectivity that results from the use of the sacrificial reflective surface can be accommodated by proper condenser design.

Tichenor, Daniel A. (Castro Valley, CA); Kubiak, Glenn D. (Livermore, CA); Lee, Sung Hun (Sunnyvale, CA)

2007-07-03T23:59:59.000Z

207

Definition: Reflection Survey | Open Energy Information  

Open Energy Info (EERE)

Reflection Survey Reflection Survey Jump to: navigation, search Dictionary.png Reflection Survey Seismic reflection surveys image the structure of the subsurface through the measurement of the two way travel time of reflected artificially-generated elastic waves.[1] View on Wikipedia Wikipedia Definition Also Known As Seismic Reflection References ↑ http://www.amazon.com/Introduction-Geophysical-Prospecting-Milton-Dobrin/dp/0071004041 Ret LikeLike UnlikeLike You like this.Sign Up to see what your friends like. rieved from "http://en.openei.org/w/index.php?title=Definition:Reflection_Survey&oldid=598371" Category: Definitions What links here Related changes Special pages Printable version Permanent link Browse properties 429 Throttled (bot load) Error 429 Throttled (bot load)

208

Thermonuclear Reflect AB-Reactor  

E-Print Network (OSTI)

The author offers a new kind of thermonuclear reflect reactor. The remarkable feature of this new reactor is a three net AB reflector, which confines the high temperature plasma. The plasma loses part of its energy when it contacts with the net but this loss can be compensated by an additional permanent plasma heating. When the plasma is rarefied (has a small density), the heat flow to the AB reflector is not large and the temperature in the triple reflector net is lower than 2000 - 3000 K. This offered AB-reactor has significantly less power then the currently contemplated power reactors with magnetic or inertial confinement (hundreds-thousands of kW, not millions of kW). But it is enough for many vehicles and ships and particularly valuable for tunnelers, subs and space apparatus, where air to burn chemical fuel is at a premium or simply not available. The author has made a number of innovations in this reactor, researched its theory, developed methods of computation, made a sample computation of typical pr...

Bolonkin, Alexander

2008-01-01T23:59:59.000Z

209

Thermonuclear Reflect AB-Reactor  

E-Print Network (OSTI)

The author offers a new kind of thermonuclear reflect reactor. The remarkable feature of this new reactor is a three net AB reflector, which confines the high temperature plasma. The plasma loses part of its energy when it contacts with the net but this loss can be compensated by an additional permanent plasma heating. When the plasma is rarefied (has a small density), the heat flow to the AB reflector is not large and the temperature in the triple reflector net is lower than 2000 - 3000 K. This offered AB-reactor has significantly less power then the currently contemplated power reactors with magnetic or inertial confinement (hundreds-thousands of kW, not millions of kW). But it is enough for many vehicles and ships and particularly valuable for tunnelers, subs and space apparatus, where air to burn chemical fuel is at a premium or simply not available. The author has made a number of innovations in this reactor, researched its theory, developed methods of computation, made a sample computation of typical project. The main point of preference for the offered reactor is its likely cheapness as a power source. Key words: Micro-thermonuclear reactor, Multi-reflex AB-thermonuclear reactor, Self-magnetic AB-thermonuclear reactor, aerospace thermonuclear engine.

Alexander Bolonkin

2008-03-26T23:59:59.000Z

210

REFLECTED LIGHT INTENSITY DISTRIBUTIONS FROM DEFECTS ON HIGHLY REFLECTIVE SPHERES PDO 6984778, Topical Report  

SciTech Connect

A light reflection technique suitable for development into an automated surface quality certification system was investigated to determine if reflected light intensity distributions could be corre]ated with surface defect depths. Reflected laser light intensity distributions from pit and scratch defects on highly reflective spheres were studied with a commercial multi-element photodetector. It was found that the intensity distributions --Goll'lf be correlated with depths of pits and scratches in a size range of concern on highly reflective' spheres.

Klingsport, P. E.

1977-02-01T23:59:59.000Z

211

Photovoltaic module with light reflecting backskin  

DOE Patents (OSTI)

A photovoltaic module comprises electrically interconnected and mutually spaced photovoltaic cells that are encapsulated by a light-transmitting encapsulant between a light-transparent front cover and a back cover, with the back cover sheet being an ionomer/nylon alloy embossed with V-shaped grooves running in at least two directions and coated with a light reflecting medium so as to provide light-reflecting facets that are aligned with the spaces between adjacent cells and oriented so as to reflect light falling in those spaces back toward said transparent front cover for further internal reflection onto the solar cells, whereby substantially all of the reflected light will be internally reflected from said cover sheet back to the photovoltaic cells, thereby increasing the current output of the module. The internal reflector improves power output by as much as 67%.

Gonsiorawski, Ronald C. (Danvers, MA)

2007-07-03T23:59:59.000Z

212

On HVAC duct acoustical end reflection  

Science Conference Proceedings (OSTI)

Duct end reflection (ER) is the apparent loss of sound power resulting from an abrupt change in a cross?sectional area of the duct. In most references

2000-01-01T23:59:59.000Z

213

Natural gas consumption reflects shifting sectoral patterns ...  

U.S. Energy Information Administration (EIA)

U.S. natural gas consumption since 1997 reflects shifting patterns. Total U.S. natural gas consumption rose 7% between 1997 and 2011, but this modest ...

214

5. Consumer Prices Reflect Benefits of Restructuring  

U.S. Energy Information Administration (EIA)

Energy Information Administration Natural Gas 1996: Issues and Trends 99 5. Consumer Prices Reflect Benefits of Restructuring The restructuring of the natural gas ...

215

Measuring Light Reflectance of BGO Crystal Surfaces  

E-Print Network (OSTI)

Carlo program simulating light propagation in isotropic orTerms—Lambertian reflection, light collection, Monte Carloy-axis) and fraction specular light (right y- axis) for a

Janecek, Martin

2009-01-01T23:59:59.000Z

216

Reflective Coherent Spatial Light Modulator (RCSLM)  

Reflective Coherent Spatial Light Modulator (RCSLM) Note: The technology described above is an early stage opportunity. Licensing rights to this intellectual property may

217

Does Shareholder Voting Reflect Shareholder Preferences?  

E-Print Network (OSTI)

=980422. Kamar, Ehud. 2006. “Does Shareholder Voting onDoes Shareholder Voting Reflect Shareholder Preferences?contests. The literature that does exist is methodologically

Listokin, Yair Jason

2007-01-01T23:59:59.000Z

218

Sandia National Laboratories Solar Reflection Panels  

Sandia National Laboratories Solar Reflection Panels HTTPS://IP.SANDIA.GOV Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia ...

219

Identification coding schemes for modulated reflectance systems  

DOE Patents (OSTI)

An identifying coding apparatus employing modulated reflectance technology involving a base station emitting a RF signal, with a tag, located remotely from the base station, and containing at least one antenna and predetermined other passive circuit components, receiving the RF signal and reflecting back to the base station a modulated signal indicative of characteristics related to the tag.

Coates, Don M. (Santa Fe, NM); Briles, Scott D. (Los Alamos, NM); Neagley, Daniel L. (Albuquerque, NM); Platts, David (Santa Fe, NM); Clark, David D. (Santa Fe, NM)

2006-08-22T23:59:59.000Z

220

Data Souvenirs: Environmental psychology and reflective design  

Science Conference Proceedings (OSTI)

The physical form of technology and its relationship to the surrounding environment is an important factor in design; we argue that this is especially true in the design of reflective technology. We suggest environmental psychology theory as a tool for ... Keywords: Design, Environmental psychology, Personal reflection, Tangible interfaces

Ryan Aipperspach; Ben Hooker; Allison Woodruff

2011-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "reflection radiometer aster" 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

Aging of reflective roofs: soot deposition  

Science Conference Proceedings (OSTI)

Solar-reflective roofs remain cooler than absorptive roofs and thus conserve electricity otherwise needed for air conditioning. A currently controversial aspect of solar-reflective cool roofing is the extent to which an initially high solar reflectance decreases with time. We present experimental data on the spectral absorption of deposits that accumulate on roofs, and we attribute most of the absorption to carbon soot originally produced by combustion. The deposits absorb more at short wavelengths (e.g., in the blue) than in the red and infrared, imparting a slightly yellow tinge to formerly white surfaces. The initial rate of reflectance reduction by soot accumulation is consistent with known emission rates that are due to combustion. The long-term reflectance change appears to be determined by the ability of the soot to adhere to the roof, resisting washout by rain.

Berdahl, Paul; Akbari, Hashem; Rose, Leanna S.

2001-05-01T23:59:59.000Z

222

Reflectance based optical fiber chemical sensor  

DOE Patents (OSTI)

A thin film chemical sensor undergoes changes in reflective optical properties when exposed to a chemical species. A thin metal film is deposited at the end of an optical fiber, and exposure of the thin film to the chemical species causes changes in the effective thickness of the thin film, thereby changing its reflective properties. A chemical detection system based on the thin film sensor includes a light source and an optical divider for dividing light from the light source into a first and second light path. The first light path leads to circuitry for providing a reference signal. The thin film chemical sensor receives light from the second light path, and a photoelectric detector detects light reflected from the chemical sensor and provides an electrical signal representative of the reflected light. Circuitry is provided for comparing the reference signal with the reflected light signal, thereby providing a measurement signal indicative of the presence of the chemical species. 5 figs.

Butler, M.A.; Pfeifer, K.B.; Ricco, A.J.

1988-10-18T23:59:59.000Z

223

U-043: Attachmate Reflection Buffer Overflow in FTP Client Lets...  

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

for HP version 14.x Reflection for UNIX and OpenVMS version 14.x Reflection for ReGIS Graphics version 14.x Reflection for IBM version 14.x Reflection X version 14.x ABSTRACT: A...

224

Glue Film Thickness Measurements by Spectral Reflectance  

SciTech Connect

Spectral reflectance was used to determine the thickness of thin glue layers in a study of the effect of the glue on radiance and reflectance measurements of shocked-tin substrates attached to lithium fluoride windows. Measurements based on profilometry of the components were found to be inaccurate due to flatness variations and deformation of the tin substrate under pressure during the gluing process. The accuracy of the spectral reflectance measurements were estimated to be ±0.5 ?m, which was sufficient to demonstrate a convincing correlation between glue thickness and shock-generated light.

B. R. Marshall

2010-09-20T23:59:59.000Z

225

Proof Synthesis and Reflection for Linear Arithmetic  

Science Conference Proceedings (OSTI)

This article presents detailed implementations of quantifier elimination for both integer and real linear arithmetic for theorem provers. The underlying algorithms are those by Cooper (for Z) and by Ferrante and Rackoff ... Keywords: Linear arithmetic, Proof synthesis, Reflection

Amine Chaieb; Tobias Nipkow

2008-07-01T23:59:59.000Z

226

Diffuse reflectance imaging with astronomical applications  

E-Print Network (OSTI)

Diffuse objects generally tell us little about the surrounding lighting, since the radiance they reflect blurs together incident lighting from many directions. In this paper we discuss how occlusion geometry can help invert ...

Hasinoff, Samuel W.

227

Solar Reflection Panels - Energy Innovation Portal  

Patent 7,077,532: Solar reflection panels A solar collector comprising a glass mirror, and a composite panel, wherein the back of the mirror is affixed to a front ...

228

Lamp method and apparatus using multiple reflections  

DOE Patents (OSTI)

A method wherein the light in a sulfur or selenium lamp is reflected through the fill a multiplicity of times to convert ultraviolet radiation to visible is disclosed. A light emitting device comprised of an electrodeless envelope which bears a light reflecting covering around a first portion which does not crack due to differential thermal expansion and which has a second portion which comprises a light transmissive aperture. 20 figs.

MacLennan, D.A.; Turner, B.; Kipling, K.

1999-05-11T23:59:59.000Z

229

Lamp method and apparatus using multiple reflections  

DOE Patents (OSTI)

A method wherein the light in a sulfur or selenium lamp is reflected through the fill a multiplicity of times to convert ultraviolet radiation to visible. A light emitting device comprised of an electrodeless envelope which bears a light reflecting covering around a first portion which does not crack due to differential thermal expansion and which has a second portion which comprises a light transmissive aperture.

MacLennan, Donald A. (Butler, PA); Turner, Brian (Damascus, MD); Kipling, Kent (Gaithersburg, MD)

1999-01-01T23:59:59.000Z

230

Reflective masks for extreme ultraviolet lithography  

SciTech Connect

Extreme ultraviolet lithographic masks are made by patterning multilayer reflective coatings with high normal incidence reflectivity. Masks can be patterned by depositing a patterned absorber layer above the coating or by etching the pattern directly into the coating itself. Electromagnetic simulations showed that absorber-overlayer masks have superior imaging characteristics over etched masks (less sensitive to incident angles and pattern profiles). In an EUVL absorber overlayer mask, defects can occur in the mask substrate, reflective coating, and absorber pattern. Electromagnetic simulations showed that substrate defects cause the most severe image degradation. A printability study of substrate defects for absorber overlayer masks showed that printability of 25 nm high substrate defects are comparable to defects in optical lithography. Simulations also indicated that the manner in which the defects are covered by multilayer reflective coatings can affect printability. Coverage profiles that result in large lateral spreading of defect geometries amplify the printability of the defects by increasing their effective sizes. Coverage profiles of Mo/Si coatings deposited above defects were studied by atomic force microscopy and TEM. Results showed that lateral spread of defect geometry is proportional to height. Undercut at defect also increases the lateral spread. Reductions in defect heights were observed for 0.15 {mu}m wide defect lines. A long-term study of Mo/Si coating reflectivity revealed that Mo/Si coatings with Mo as the top layer suffer significant reductions in reflectivity over time due to oxidation.

Nguyen, Khanh Bao

1994-05-01T23:59:59.000Z

231

Reflection Survey (Majer, 2003) | Open Energy Information  

Open Energy Info (EERE)

Reflection Survey (Majer, 2003) Reflection Survey (Majer, 2003) Exploration Activity Details Location Unspecified Exploration Technique Reflection Survey Activity Date Usefulness not indicated DOE-funding Unknown Notes The goal of this work is to evaluate the most promising methods and approaches that may be used for improved geothermal exploration and reservoir assessment. It is not a comprehensive review of all seismic methods used to date in geothermal environments. This work was motivated by a need to assess current and developing seismic technology that if applied in geothermal cases may greatly improve the chances for locating new geothermal resources and/or improve assessment of current ones. References E. L. Majer (2003) 3-D Seismic Methods For Geothermal Reservoir Exploration And Assessment-Summary

232

Soil Moisture Monitorization Using GNSS Reflected Signals  

E-Print Network (OSTI)

The use of GNSS signals as a source of opportunity for remote sensing applications, GNSS-R, has been a research area of interest for more than a decade. One of the possible applications of this technique is soil moisture monitoring. The retrieval of soil moisture with GNSS-R systems is based on the variability of the ground dielectric properties associated to soil moisture. Higher concentrations of water in the soil yield a higher dielectric constant and reflectivity, which incurs in signals that reflect from the Earth surface with higher peak power. Previous investigations have demonstrated the capability of GPS bistatic scatterometers to obtain high enough signal to noise ratios in order to sense small changes in surface reflectivity. Furthermore, these systems present some advantages with respect to others currently used to retrieve soil moisture. Upcoming satellite navigation systems, such as the European Galileo, will represent an excellent source of opportunity for soil moisture remote sensing for vario...

Egido, Alejandro; Caparrini, Marco; Martin, Cristina; Farres, Esteve; Banque, Xavier

2008-01-01T23:59:59.000Z

233

Pigments which reflect infrared radiation from fire  

DOE Patents (OSTI)

Conventional paints transmit or absorb most of the intense infrared (IR) radiation emitted by fire, causing them to contribute to the spread of fire. The present invention comprises a fire retardant paint additive that reflects the thermal IR radiation emitted by fire in the 1 to 20 micrometer ({micro}m) wavelength range. The important spectral ranges for fire control are typically about 1 to about 8 {micro}m or, for cool smoky fires, about 2 {micro}m to about 16 {micro}m. The improved inventive coatings reflect adverse electromagnetic energy and slow the spread of fire. Specific IR reflective pigments include titanium dioxide (rutile) and red iron oxide pigments with diameters of about 1 {micro}m to about 2 {micro}m and thin leafing aluminum flake pigments. 4 figs.

Berdahl, P.H.

1998-09-22T23:59:59.000Z

234

Reflection Survey (Laney, 2005) | Open Energy Information  

Open Energy Info (EERE)

Laney, 2005) Laney, 2005) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Reflection Survey (Laney, 2005) Exploration Activity Details Location Unspecified Exploration Technique Reflection Survey Activity Date Usefulness useful DOE-funding Unknown Notes Seismic Imaging, Majer, Gritto and Daley. The project objective includes the development and application of active seismic methods for improved understanding of the subsurface structure, faults, fractures lithology, and fluid paths in geothermal reservoirs. While the objective of the work previous to FY2003 was concerned with the detection and location of faults and fractures based on an existing 3-D seismic data set collected at the Rye Patch geothermal reservoir, the current work was aimed at investigating

235

Prisms with total internal reflection as solar reflectors  

DOE Patents (OSTI)

An improved reflective wall for radiant energy collection and concentration devices is provided. The wall is comprised of a plurality of prisms whose frontal faces are adjacent and which reflect the desired radiation by total internal reflection.

Rabl, Arnulf (Downers Grove, IL); Rabl, Veronika (Downers Grove, IL)

1978-01-01T23:59:59.000Z

236

A Robust Estimator of Rainfall Rate Using Differential Reflectivity  

Science Conference Proceedings (OSTI)

Conventional estimator of rainfall rate using reflectivity factor and differential reflectivity ZDR becomes unstable when the measured values of ZDR are small due to measurement errors. An alternate estimator of rainfall rate using reflectivity ...

Eugenio Gorgucca; Gianfranco Scarchilli; V. Chandrasekar

1994-04-01T23:59:59.000Z

237

Multispectral Imaging At Rhodes Marsh Area (Shevenell, Et Al., 2008) | Open  

Open Energy Info (EERE)

Rhodes Marsh Area (Shevenell, Et Al., 2008) Rhodes Marsh Area (Shevenell, Et Al., 2008) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Multispectral Imaging At Rhodes Marsh Area (Shevenell, Et Al., 2008) Exploration Activity Details Location Rhodes Marsh Area Exploration Technique Multispectral Imaging Activity Date Usefulness useful DOE-funding Unknown Notes Kratt et al. (2006) demonstrate the effectiveness of using a field-portable ASD Fieldspec spectroradiometer and satellite-based Advanced Spaceborne Thermal and emitted Reflectance Radiometer (ASTER) imagery for mapping borate minerals in the field. Borate crusts that were partially mined during the 1800s were identified and mapped at Rhodes, Teels, and Columbus Marshes (playas), all in western Nevada (Figure 1).

238

Multispectral Imaging At Teels Marsh Area (Shevenell, Et Al., 2008) | Open  

Open Energy Info (EERE)

Teels Marsh Area (Shevenell, Et Al., 2008) Teels Marsh Area (Shevenell, Et Al., 2008) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Multispectral Imaging At Teels Marsh Area (Shevenell, Et Al., 2008) Exploration Activity Details Location Teels Marsh Area Exploration Technique Multispectral Imaging Activity Date Usefulness useful DOE-funding Unknown Notes Kratt et al. (2006) demonstrate the effectiveness of using a field-portable ASD Fieldspec spectroradiometer and satellite-based Advanced Spaceborne Thermal and emitted Reflectance Radiometer (ASTER) imagery for mapping borate minerals in the field. Borate crusts that were partially mined during the 1800s were identified and mapped at Rhodes, Teels, and Columbus Marshes (playas), all in western Nevada (Figure 1).

239

Multispectral Imaging At Columbus Salt Marsh Area (Shevenell, Et Al., 2008)  

Open Energy Info (EERE)

Marsh Area (Shevenell, Et Al., 2008) Marsh Area (Shevenell, Et Al., 2008) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Multispectral Imaging At Columbus Salt Marsh Area (Shevenell, Et Al., 2008) Exploration Activity Details Location Columbus Salt Marsh Area Exploration Technique Multispectral Imaging Activity Date Usefulness useful DOE-funding Unknown Notes Kratt et al. (2006) demonstrate the effectiveness of using a field-portable ASD Fieldspec spectroradiometer and satellite-based Advanced Spaceborne Thermal and emitted Reflectance Radiometer (ASTER) imagery for mapping borate minerals in the field. Borate crusts that were partially mined during the 1800s were identified and mapped at Rhodes, Teels, and Columbus Marshes (playas), all in western Nevada (Figure 1).

240

Research Needs: Glass Solar Reflectance and Vinyl Siding  

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

Research Needs: Glass Solar Reflectance and Vinyl Siding Title Research Needs: Glass Solar Reflectance and Vinyl Siding Publication Type Report LBNL Report Number LBNL-5022E Year...

Note: This page contains sample records for the topic "reflection radiometer aster" 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

Potential benefits of solar reflective car shells: Cooler cabins...  

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

of solar reflective car shells: Cooler cabins, fuel savings and emission reductions Title Potential benefits of solar reflective car shells: Cooler cabins, fuel savings and...

242

Research Needs: Glass Solar Reflectance and Vinyl Siding  

E-Print Network (OSTI)

properties of reflected solar radiation from glass surfaces,transfer at the siding surface. Direct solar radiation tosiding, reflected solar radiation from nearby surfaces,

Hart, Robert

2012-01-01T23:59:59.000Z

243

Seismic Reflection Data and Conceptual Models for Geothermal...  

Open Energy Info (EERE)

Reflection Data and Conceptual Models for Geothermal Development in Nevada Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Seismic Reflection...

244

Reflection Survey At Jemez Pueblo Area (DOE GTP) | Open Energy...  

Open Energy Info (EERE)

Reflection Survey At Jemez Pueblo Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Reflection Survey At Jemez Pueblo Area (DOE GTP)...

245

Reflection Survey At Wister Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Reflection Survey At Wister Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Reflection Survey At Wister Area (DOE GTP) Exploration...

246

Electrochromic window with high reflectivity modulation  

DOE Patents (OSTI)

A multi-layered, active, thin film, solid-state electrochromic device having a high reflectivity in the near infrared in a colored state, a high reflectivity and transmissivity modulation when switching between colored and bleached states, a low absorptivity in the near infrared, and fast switching times, and methods for its manufacture and switching are provided. In one embodiment, a multi-layered device comprising a first indium tin oxide transparent electronic conductor, a transparent ion blocking layer, a tungsten oxide electrochromic anode, a lithium ion conducting-electrically resistive electrolyte, a complimentary lithium mixed metal oxide electrochromic cathode, a transparent ohmic contact layer, a second indium oxide transparent electronic conductor, and a silicon nitride encapsulant is provided. Through elimination of optional intermediate layers, simplified device designs are provided as alternative embodiments. Typical colored-state reflectivity of the multi-layered device is greater than 50% in the near infrared, bleached-state reflectivity is less than 40% in the visible, bleached-state transmissivity is greater than 60% in the near infrared and greater than 40% in the visible, and spectral absorbance is less than 50% in the range from 0.65-2.5 .mu.m.

Goldner, Ronald B. (Lexington, MA); Gerouki, Alexandra (Medford, MA); Liu, Te-Yang (Arlington, MA); Goldner, Mark A. (Cambridge, MA); Haas, Terry E. (Southborough, MA)

2000-01-01T23:59:59.000Z

247

Land Surface Reflectance: A Possible Earth Science  

E-Print Network (OSTI)

are in magenta, water bodies are outlined in white. MODIS Surface Reflectance South Africa From: E. Vermote, UMD correction (low, medium, high) ­ cloud and cloud shadow ­ snow flag ­ land/water flag · Supplemental information ­ Viewing geometry (view and solar zenith and azimuth angles) ­ Geolocation (lat

248

Dynamic shading enhancement for reflectance transformation imaging  

Science Conference Proceedings (OSTI)

We propose a set of dynamic shading enhancement techniques for improving the perception of details, features, and overall shape characteristics from images created with Reflectance Transformation Imaging (RTI) techniques. Selection of these perceptual ... Keywords: Visualization, cultural heritage shading enhancement, illumination, image processing

Gianpaolo Palma; Massimiliano Corsini; Paolo Cignoni; Roberto Scopigno; Mark Mudge

2010-09-01T23:59:59.000Z

249

Heat reflecting tape for thermoelectric converter  

DOE Patents (OSTI)

Threads are interlaced with thermoelectric wires to provide a woven cloth in tape form, there being an intermediate layer of heat radiation reflecting material (e.g., aluminum foil) insulated electrically from said wires, which are of opposite thermoelectric polarity and connected as a plurality of thermocouples.

Purdy, David L. (Indiana, PA)

1977-01-01T23:59:59.000Z

250

Reflected Solar Radiances from Regional Scale Scenes  

Science Conference Proceedings (OSTI)

A set of bi-directional reflectance models is presented for various atmospheric scene types. The models were composited from data collected from an aircraft platform in May-July 1979 during Summer MONEX. The space scale of the composited models ...

John M. Davis; Stephen K. Cox

1982-11-01T23:59:59.000Z

251

Characterization of background reflectivity for MEDUSA  

Science Conference Proceedings (OSTI)

The DARPA MEDUSA program goal is to detect, locate, and identify electro-optical threats in the vicinity of a moving platform. Laser sensing will be employed to find these threats by looking for anomalous reflections from threat sensors. However, the reflectivity variability (clutter) in both natural and manmade backgrounds will inherently limit target detection levels. In parallel with advanced component development by several aerospace contractors, a study of this clutter limitation was initiated in the long-wave (LW) and midwave (MW) infrared spectral regions to properly drive system design parameters. The analysis of clutter and associated limits on detection has been a major component of LANL efforts in laser remote sensing for non-proliferation. LANL is now analyzing existing data and conducting additional selected measurements in both the LWIR (9 and 10.6 pm) and MWIR (4.6 pm) in support of the DARPA program to increase our understanding of these clutter limitations and, thereby aid in the design and development of the MEDUSA system. The status of the LANL effort will be discussed. A variety of different natural and manmade target types have been investigated. Target scenes range from relatively low clutter sites typical of a southwestern desert to higher clutter downtown urban sites. Images are created by conducting raster scans across a scene interest. These images are then analyzed using data clustering techniques (e g K-means) to identify regions within the scene that contain similar reflectivity profiles. Data will be presented illustrating the reflectivity variability among different samples of the same target type, Le. within the same cluster, and among different data clusters. In general, it is found that the variability of reflectivities among similar targets is well represented by a log-normal distribution. Furthermore, manmade target tend to have higher reflectivities and more variability than natural targets. The implications of this observation for MEDUSA systems designed to locate and identify threat sensors will be discussed. The implications for chemical sensing applications will also be addressed.

Oldenborg, R. C. (Richard C.); Tiee, J. J. (Joe J.); Foy, B. R. (Bernard R.); Petrin, R. R. (Roger R.); Wilson, C. W. (Carl W.)

2003-01-01T23:59:59.000Z

252

Milwaukee Installer Reflects on His Career In Solar  

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

Interested in joining America's solar workforce? One Milwaukee solar installer shares his career reflections and advice.

253

U.S. Reflects World Market  

Gasoline and Diesel Fuel Update (EIA)

4 4 Notes: U.S. crude oil inventories reflect the world situation. U.S. inventories were drawn down in 1999 as world demand exceeded world supply of crude oil as OPEC cut back on production. Low crude oil inventories go hand in hand with low product inventories. Product inventories were also drawn down to help meet demand, as was seen with gasoline this Spring. The rise in crude oil inventories earlier this year, while indicating an improvement in the market balance, appears to be short-lived, just as we had predicted a few months ago. Looking at U.S. crude stock levels in April and May can be misleading, since increases then were more reflective of the surge in WTI and U.S. product prices in the 1st quarter. With U.S. crude oil stocks drawn down by more than 20 million barrels from

254

Modeling the effects of reflective roofing  

SciTech Connect

Roofing materials which are highly reflective to sunlight are currently being developed. Reflective roofing is an effective summertime energy saver in warm and sunny climates. It has been demonstrated to save up to 40% of the energy needed to cool a building during the summer months. Buildings without air conditioning can reduce their indoor temperatures and improve occupant comfort during the summer if highly reflective roofing materials are used. But there are questions about the tradeoff between summer energy savings and extra wintertime energy use due to reduced heat collection by the roof. These questions are being answered by simulating buildings in various climates using the DOE-2 program (version 2.1E). Unfortunately, DOE-2 does not accurately model radiative, convective and conductive processes in the roof-attic. Radiative heat transfer from the underside of a reflective roof is much smaller than that of a roof which absorbs heat from sunlight, and must be accounted for in the building energy model. Convection correlations for the attic and the roof surface must be fine tuned. An equation to model the insulation`s conductivity dependence on temperature must also be added. A function was written to incorporate the attic heat transfer processes into the DOE-2 building energy simulation. This function adds radiative, convective and conductive equations to the energy balance of the roof. Results of the enhanced DOE-2 model were compared to measured data collected from a school bungalow in a Sacramento Municipal Utility District monitoring project, with particular attention paid to the year-round energy effects.

Gartland, L.M.; Konopacki, S.J.; Akbari, H. [Lawrence Berkeley National Lab., CA (United States). Energy and Environment Div.

1996-08-01T23:59:59.000Z

255

Compact reflective imaging spectrometer utilizing immersed gratings  

DOE Patents (OSTI)

A compact imaging spectrometer comprising an entrance slit for directing light, a first mirror that receives said light and reflects said light, an immersive diffraction grating that diffracts said light, a second mirror that focuses said light, and a detector array that receives said focused light. The compact imaging spectrometer can be utilized for remote sensing imaging spectrometers where size and weight are of primary importance.

Chrisp, Michael P. (Danville, CA)

2006-05-09T23:59:59.000Z

256

Light reflecting apparatus including a multi-aberration light reflecting surface  

DOE Patents (OSTI)

A light reflecting apparatus including a multi-aberration bendable light reflecting surface is disclosed herein. This apparatus includes a structural assembly comprised of a rectangular plate which is resiliently bendable, to a limited extent, and which has a front side defining the multi-aberration light reflecting surface and an opposite back side, and a plurality of straight leg members rigidly connected with the back side of the plate and extending rearwardly therefrom. The apparatus also includes a number of different adjustment mechanisms, each of which is connected with specific ones of the leg members. These mechanisms are adjustably movable in different ways for applying corresponding forces to the leg members in order to bend the rectangular plate and light reflecting surface into different predetermined curvatures and which specifically include quadratic and cubic curvatures corresponding to different optical aberrations.

Sawicki, Richard H. (Pleasanton, CA); Sweatt, William (Livermore, CA)

1987-01-01T23:59:59.000Z

257

V-022: Attachmate Reflection Products Java Multiple Vulnerabilities |  

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

2: Attachmate Reflection Products Java Multiple Vulnerabilities 2: Attachmate Reflection Products Java Multiple Vulnerabilities V-022: Attachmate Reflection Products Java Multiple Vulnerabilities November 13, 2012 - 1:00am Addthis PROBLEM: Attachmate Reflection Products Java Multiple Vulnerabilities PLATFORM: Reflection X 2011 Reflection Suite for X 2011 Reflection for Secure IT Server for Windows Reflection for Secure IT Client and Server for UNIX ABSTRACT: Security issues related to Reflection PKI Services Manager REFERENCE LINKS: PKI Services Manager Technical Note 2560 Secunia Advisory SA51256 CVE-2012-0551 CVE-2012-1711 CVE-2012-1713 CVE-2012-1716 CVE-2012-1717 CVE-2012-1718 CVE-2012-1719 CVE-2012-1720 CVE-2012-1721 CVE-2012-1722 CVE-2012-1723 CVE-2012-1724 CVE-2012-1725 CVE-2012-1726 IMPACT ASSESSMENT: High DISCUSSION: Attachmate has acknowledged multiple vulnerabilities in some Reflection

258

Lensless X-Ray Imaging in Reflection  

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

Lensless X-Ray Imaging in Reflection Print Lensless X-Ray Imaging in Reflection Print The advent of x-ray free-electron laser (XFEL) light sources has led to an outburst of research activities in the field of lensless imaging. XFELs combine the advantages of sychrotron light sources (high brightness and x-ray wavelengths relevant to atomic and molecular phenomena) with the advantages of visible-light lasers (highly coherent beams). All of these characteristics are important for coherent x-ray diffraction imaging-lensless imaging techniques that are proving to be integral to single-shot, high-resolution imaging of both complex materials and biological samples. Existing techniques are typically designed for transmission geometry, however, and use isolated objects, requiring special sample fabrication and restricting the type of samples under investigation. Recently, researchers from the ALS and the University of Oregon have shown at ALS Beamline 12.0.2 that it is possible to form x-ray holograms in reflection geometry by using the light scattered from a sample, opening the door to lensless imaging of a wealth of new material samples.

259

Lensless X-Ray Imaging in Reflection  

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

Lensless X-Ray Imaging in Reflection Print Lensless X-Ray Imaging in Reflection Print The advent of x-ray free-electron laser (XFEL) light sources has led to an outburst of research activities in the field of lensless imaging. XFELs combine the advantages of sychrotron light sources (high brightness and x-ray wavelengths relevant to atomic and molecular phenomena) with the advantages of visible-light lasers (highly coherent beams). All of these characteristics are important for coherent x-ray diffraction imaging-lensless imaging techniques that are proving to be integral to single-shot, high-resolution imaging of both complex materials and biological samples. Existing techniques are typically designed for transmission geometry, however, and use isolated objects, requiring special sample fabrication and restricting the type of samples under investigation. Recently, researchers from the ALS and the University of Oregon have shown at ALS Beamline 12.0.2 that it is possible to form x-ray holograms in reflection geometry by using the light scattered from a sample, opening the door to lensless imaging of a wealth of new material samples.

260

Lensless X-Ray Imaging in Reflection  

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

Lensless X-Ray Imaging in Lensless X-Ray Imaging in Reflection Lensless X-Ray Imaging in Reflection Print Wednesday, 26 October 2011 00:00 The advent of x-ray free-electron laser (XFEL) light sources has led to an outburst of research activities in the field of lensless imaging. XFELs combine the advantages of sychrotron light sources (high brightness and x-ray wavelengths relevant to atomic and molecular phenomena) with the advantages of visible-light lasers (highly coherent beams). All of these characteristics are important for coherent x-ray diffraction imaging-lensless imaging techniques that are proving to be integral to single-shot, high-resolution imaging of both complex materials and biological samples. Existing techniques are typically designed for transmission geometry, however, and use isolated objects, requiring special sample fabrication and restricting the type of samples under investigation. Recently, researchers from the ALS and the University of Oregon have shown at ALS Beamline 12.0.2 that it is possible to form x-ray holograms in reflection geometry by using the light scattered from a sample, opening the door to lensless imaging of a wealth of new material samples.

Note: This page contains sample records for the topic "reflection radiometer aster" 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

Lensless X-Ray Imaging in Reflection  

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

X-Ray Imaging in Reflection Print X-Ray Imaging in Reflection Print The advent of x-ray free-electron laser (XFEL) light sources has led to an outburst of research activities in the field of lensless imaging. XFELs combine the advantages of sychrotron light sources (high brightness and x-ray wavelengths relevant to atomic and molecular phenomena) with the advantages of visible-light lasers (highly coherent beams). All of these characteristics are important for coherent x-ray diffraction imaging-lensless imaging techniques that are proving to be integral to single-shot, high-resolution imaging of both complex materials and biological samples. Existing techniques are typically designed for transmission geometry, however, and use isolated objects, requiring special sample fabrication and restricting the type of samples under investigation. Recently, researchers from the ALS and the University of Oregon have shown at ALS Beamline 12.0.2 that it is possible to form x-ray holograms in reflection geometry by using the light scattered from a sample, opening the door to lensless imaging of a wealth of new material samples.

262

Lensless X-Ray Imaging in Reflection  

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

X-Ray Imaging in Reflection Print X-Ray Imaging in Reflection Print The advent of x-ray free-electron laser (XFEL) light sources has led to an outburst of research activities in the field of lensless imaging. XFELs combine the advantages of sychrotron light sources (high brightness and x-ray wavelengths relevant to atomic and molecular phenomena) with the advantages of visible-light lasers (highly coherent beams). All of these characteristics are important for coherent x-ray diffraction imaging-lensless imaging techniques that are proving to be integral to single-shot, high-resolution imaging of both complex materials and biological samples. Existing techniques are typically designed for transmission geometry, however, and use isolated objects, requiring special sample fabrication and restricting the type of samples under investigation. Recently, researchers from the ALS and the University of Oregon have shown at ALS Beamline 12.0.2 that it is possible to form x-ray holograms in reflection geometry by using the light scattered from a sample, opening the door to lensless imaging of a wealth of new material samples.

263

Striping in the Suomi NPP VIIRS Thermal Bands through Anisotropic Surface Reflection  

Science Conference Proceedings (OSTI)

We have analyzed the Visible Infrared Imaging Radiometer Suite (VIIRS) thermal emissive band (TEB) M12 images centered at 3.7 ?m and found an unexpected striping. The striping was seen from ascending orbit (day time) over uniform oceans and has a ...

Quanhua Liu; Changyong Cao; Fuzhong Weng

264

Deconvolution of Wide-Field-of-View Measurements of Reflected Solar Radiation  

Science Conference Proceedings (OSTI)

Wide-field-of-view (WFOV) radiometers have been flown as part of the Earth Radiation Budget instrument on the Nimbus 6 and 7 spacecraft and as part of the Earth Radiation Budget Experiment (ERBE) instruments aboard the ERBE spacecraft and also ...

G. Louis Smith; David Rutan

1990-02-01T23:59:59.000Z

265

Reflection and Transmission for Conformal Defects  

E-Print Network (OSTI)

We consider conformal defects joining two conformal field theories along a line. We define two new quantities associated to such defects in terms of expectation values of the stress tensors and we propose them as measures of the reflectivity and transmissivity of the defect. Their properties are investigated and they are computed in a number of examples. We obtain a complete answer for all defects in the Ising model and between certain pairs of minimal models. In the case of two conformal field theories with an enhanced symmetry we restrict ourselves to non-trivial defects that can be obtained by a coset construction.

Thomas Quella; Ingo Runkel; Gerard M. T. Watts

2006-11-27T23:59:59.000Z

266

Lamp method and apparatus using multiple reflections  

DOE Patents (OSTI)

An electrodeless microwave discharge lamp includes an envelope with a discharge forming fill disposed therein which emits light, the fill being capable of absorbing light at one wavelength and re-emitting the absorbed light at a different wavelength, the light emitted from the fill having a first spectral power distribution in the absence of reflection of light back into the fill, a source of microwave energy coupled to the fill to excite the fill and cause the fill to emit light, and a reflector disposed within the microwave cavity and configured to reflect at least some of the light emitted by the fill back into the fill while allowing some light to exit, the exiting light having a second spectral power distribution with proportionately more light in the visible region as compared to the first spectral power distribution, wherein the light re-emitted by the fill is shifted in wavelength with respect to the absorbed light and the magnitude of the shift is in relation to an effective optical path length.

MacLennan, Donald A. (Gaithersburg, MD); Turner, Brian P. (Damascus, MD)

2001-01-01T23:59:59.000Z

267

A replaceable reflective film for solar concentrators  

DOE Green Energy (OSTI)

The 3M Company manufactures a silvered acrylic film called ECP-305 that is regarded as the preferred reflective film for use on stretched-membrane heliostats. However, ECP-305 will degrade in time, due to both corrosion of the silver layer and delamination at the film's silver-to-acrylic interface, and will eventually need to be replaced. 3M uses a very aggressive adhesive on this film, and once it is laminated, replacement is very difficult. The purpose of this investigation was the development of a replaceable reflector, a reflective film that can be easily removed and replaced. A replaceable reflector was successfully configured by laminating ECP-305 to the top surface of a smooth, dimensionally stable polymer film, with a removable adhesive applied to the underside of the polymer film. Several stages of screening and testing led to the selection of a 0.010-inch thick polycarbonate (GE 8030) as the best polymer film and a medium tack tape (3M Y-9425) was selected as the best removable adhesive. To demonstrate the feasibility of the replaceable reflector concept and to provide a real-time field test, the chosen construction was successfully applied to the 50-m{sup 2} SKI heliostat at the Central Receiver Test Facility at Sandia National Laboratories in Albuquerque. 4 refs., 13 figs., 7 tabs.

Not Available

1991-09-01T23:59:59.000Z

268

Reflection-Based Python-C++ Bindings  

Science Conference Proceedings (OSTI)

Python is a flexible, powerful, high-level language with excellent interactive and introspective capabilities and a very clean syntax. As such, it can be a very effective tool for driving physics analysis. Python is designed to be extensible in low-level C-like languages, and its use as a scientific steering language has become quite widespread. To this end, existing and custom-written C or C++ libraries are bound to the Python environment as so-called extension modules. A number of tools for easing the process of creating such bindings exist, such as SWIG and Boost. Python. Yet, the process still requires a considerable amount of effort and expertise. The C++ language has few built-in introspective capabilities, but tools such as LCGDict and CINT add this by providing so-called dictionaries: libraries that contain information about the names, entry points, argument types, etc. of other libraries. The reflection information from these dictionaries can be used for the creation of bindings and so the process can be fully automated, as dictionaries are already provided for many end-user libraries for other purposes, such as object persistency. PyLCGDict is a Python extension module that uses LCG dictionaries, as PyROOT uses CINT reflection information, to allow /cwPython users to access C++ libraries with essentially no preparation on the users' behalf. In addition, and in a similar way, PyROOT gives ROOT users access to Python libraries.

Generowicz, Jacek; Lavrijsen, Wim T.L.P.; Marino, Massimo; Mato, Pere

2004-10-14T23:59:59.000Z

269

Satellite-Observed Reflectance of Snow and Clouds  

Science Conference Proceedings (OSTI)

The effects of snow and cloud cover on bidirectional reflectance were examined using visible radiation (0.5–0.7 ?m) data measured by NOAA polar orbiting satellites between June 1974 and February 1978. Reflectances resulting from different cloud/...

Alan Robock; Dale Kaiser

1985-11-01T23:59:59.000Z

270

RefaFlex: safer refactorings for reflective Java programs  

Science Conference Proceedings (OSTI)

If programs access types and members through reflection, refactoring tools cannot guarantee that refactorings on those programs are behavior preserving. Refactoring approaches for highly reflective languages like Smalltalk therefore check behavior preservation ...

Andreas Thies; Eric Bodden

2012-07-01T23:59:59.000Z

271

Reflected Fluxes for Broken Clouds over a Lambertian Surface  

Science Conference Proceedings (OSTI)

Reflected fluxes are calculated for broken cloudiness (i.e., nonplane parallel) as a function of cloud cover, cloud optical depth, solar zenith angle and surface albedo. These calculations extend previous results for broken cloud reflected fluxes ...

Ronald M. Welch; Bruce A. Wielicki

1989-05-01T23:59:59.000Z

272

Reconstruction of shape and reflectance properties based on visual hull  

Science Conference Proceedings (OSTI)

A method based on Visual Hull is proposed for simultaneously recovering an object's shape and its reflectance properties from multiple images. Here, the reflectance properties are described by the Ward BRDF model. Firstly, the shape represented by voxels ...

Zuoyong Zheng; Lizhuang Ma; Zhong Li; Zhihua Chen

2009-05-01T23:59:59.000Z

273

Low-Latitude Reflection of Rossby Wave Trains  

Science Conference Proceedings (OSTI)

The nonlinear reflection of an isolated Rossby wave train at a low-latitude wave-breaking region is contrasted with the more familiar longitudinally periodic case. General theoretical arguments for nonlinear reflection based on absorptivity ...

G. Brunet; P. H. Haynes

1996-02-01T23:59:59.000Z

274

NIST Lunar spectro-radiometer  

Science Conference Proceedings (OSTI)

... each of which is connected to a spectrograph covering a different ... to be approximately 0.5 % through visible atmospheric window bands and less ...

2013-04-11T23:59:59.000Z

275

EIA projections for carbon dioxide emissions reflect changes ...  

U.S. Energy Information Administration (EIA)

Energy Information Administration ... The lowered projections reflect both market and policy developments that have reduced recent and projected ...

276

Oxide Multilayer Thermal Radiation Energy Reflection EBCs: Effect ...  

Science Conference Proceedings (OSTI)

Environmental barrier coatings (EBCs) with thermal radiation energy reflection have been developed recently. The EBCs utilize interaction between ...

277

Reflection and transmission at dimensional boundaries  

E-Print Network (OSTI)

An inhomogeneous Kaluza-Klein compactification of a higher dimensional spacetime may give rise to an effective 4d spacetime with distinct domains having different sizes of the extra dimensions. The domains are separated by domain walls generated by the extra dimensional scale factor. The scattering of electromagnetic and massive particle waves at such boundaries is examined here for models without warping or branes. We consider the limits corresponding to thin (thick) domain walls, i.e., limits where wavelengths are large (small) in comparison to wall thickness. We also obtain numerical solutions for a wall of arbitrary thickness and extract the reflection and transmission coefficients as functions of frequency. Results are obtained which qualitatively resemble those for electroweak domain walls and other "ordinary" domain walls for 4d theories.

Nelson De Leon; John Morris

2006-08-16T23:59:59.000Z

278

Autonomous recovery from hostile code insertion using distributed reflection  

Science Conference Proceedings (OSTI)

In a hostile environment, an autonomous cognitive system requires a reflective capability to detect problems in its own operation and recover from them without external intervention. We present an architecture in which reflection is distributed so that ... Keywords: Anomaly, Immune systems, Meta-level, Quality-monitoring, Reflection, Self-repair

Catriona M Kennedy; Aaron Sloman

2003-06-01T23:59:59.000Z

279

The Effect of Mean and Differential Attenuation on the Precision and Accuracy of the Estimates of Reflectivity and Differential Reflectivity  

Science Conference Proceedings (OSTI)

Error propagation analysis is applied to evaluate the effects of correcting horizontal and differential attenuation on the precision of the estimates of reflectivity and differential reflectivity. The analysis shows that the loss of precision on ...

Enrico Torlaschi; Isztar Zawadzki

2003-03-01T23:59:59.000Z

280

OPEC 1991 results reflect hard times  

Science Conference Proceedings (OSTI)

This paper reports that low crude oil prices and economic tough times in industrial countries cause a lean 1991 for members of the Organization of Petroleum Exporting Countries. OPEC's 1991 annual report the member countries reported an overall loss of $12 billion in 1991 on oil revenues that fell 16.2%. Iraq and Kuwait were not included because of their unusual circumstances in the wake of the Persian Gulf war. Reduced oil revenues reflected a slide to $18.66/bbl in 1991 from $22.26/bbl in 1990 for the average price of OPEC basket crudes. As of last June 5 OPEC's basket crude price has averaged only $17.42/bbl this year, OPEC News Agency (Opecna) reported. First quarter 1992 prices averaged $16.77/bbl, compared wit $19.31/bbl in fourth quarter 1991. The average price jumped 52 cent/bbl the first week in June this year to $19.93/bbl, bouyed by Saudi Arabia's move at the end of May to shift its policy from price moderation to one in favor of higher prices, Opecna the. OPEC members increased production 1% in 1991 to an average 23.28 million b/d in spite of negligible production from Iraq and Kuwait and reduced production from Qatar.

Not Available

1992-07-20T23:59:59.000Z

Note: This page contains sample records for the topic "reflection radiometer aster" 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

LBNL-5022E Research Needs: Glass Solar Reflectance and Vinyl...  

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

022E Research Needs: Glass Solar Reflectance and Vinyl Siding Authors: R. Hart*, C. Curcija, D. Arasteh, H. Goudey, C. Kohler, S. Selkowitz Environmental Energy Technologies...

282

Experimental Cell for Neutron Reflection on Lithium Manganese ...  

Science Conference Proceedings (OSTI)

Presentation Title, Experimental Cell for Neutron Reflection on Lithium Manganese Oxide to Study the Electrode/Electrolyte Interface. Author(s), Brian Kitchen.

283

Measuring solar reflectance-Part II: Review of practical methods  

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

II: Review of practical methods Title Measuring solar reflectance-Part II: Review of practical methods Publication Type Journal Article Year of Publication 2010 Authors Levinson,...

284

Reflection and transmission resonances and accuracy of the wkb method  

E-Print Network (OSTI)

In this paper, we calculate the transmission and reflection amplitudes of wave functions for different potentials such as the delta function, the rectangular barrier, the Eckart potential, and the Hulthen potential. We describe the relationship between these amplitudes and compute the reflection resonances between each potential. We describe the transmission and reflection probabilities using the WKB formula and compare the results with ones obtained from matching the boundary conditions. Furthermore, we use a two by two transfer matrix to calculate a rigorous bound on the transmission and reflection probabilities.

Tritos Ngampitipan; Petarpa Boonserm

2013-02-11T23:59:59.000Z

285

Improvement of retrieved reflectance in the presence of clouds.  

E-Print Network (OSTI)

??Many algorithms exist to invert airborne imagery from units of either radiance or sensor specific digital counts to units of reflectance. These compensation algorithms remove… (more)

Bartlett, Brent

2007-01-01T23:59:59.000Z

286

Rail traffic reflects more oil production, less coal-fired ...  

U.S. Energy Information Administration (EIA)

The record increase in U.S. crude oil production during 2012 and the significant decline in coal use for domestic electricity generation were reflected in the ...

287

High-Temperature Reactor for Diffuse Reflectance Infrared ...  

High-Temperature Reactor for Diffuse Reflectance Infrared Fourier-Transform Spectroscopy Note: The technology described above is an early stage ...

288

Reflection Survey At Dixie Valley Geothermal Field Area (Blackwell...  

Open Energy Info (EERE)

Reflection Survey At Dixie Valley Geothermal Field Area (Blackwell, Et Al., 2009) Exploration Activity Details Location Dixie Valley Geothermal Field Area Exploration Technique...

289

Reflection Survey At Dixie Valley Geothermal Field Area (Blackwell...  

Open Energy Info (EERE)

Reflection Survey At Dixie Valley Geothermal Field Area (Blackwell, Et Al., 2003) Exploration Activity Details Location Dixie Valley Geothermal Field Area Exploration Technique...

290

Reflection Survey At Hot Sulphur Springs Area (Goranson, 2005...  

Open Energy Info (EERE)

Springs Area (Goranson, 2005) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Reflection Survey At Hot Sulphur Springs Area (Goranson, 2005)...

291

Blogs, reflective practice and student-centered learning  

Science Conference Proceedings (OSTI)

Blogging can be used to enhance education by encouraging reflective practice. We present a study in which a final year HCI course was constructed around regular blogging activity. We discuss the role of blogs in providing a social mechanism for the student ... Keywords: blogging, cultural probe, education, reflective practice

Russell Beale

2007-09-01T23:59:59.000Z

292

Technical Section: Linear approximation of Bidirectional Reflectance Distribution Functions  

Science Conference Proceedings (OSTI)

Various empirical and theoretical models of the surface reflectance have been introduced so far. Most of these models are based on functions with non-linear parameters and therefore faces some computational difficulties involved in non-linear optimization ... Keywords: BRDF representation, Linear models, Principal components, Reflection models, Rendering

Aydin Ozturk; Murat Kurt; Ahmet Bilgili; Cengiz Gungor

2008-04-01T23:59:59.000Z

293

Efficient virtual machine support of runtime structural reflection  

Science Conference Proceedings (OSTI)

Increasing trends towards adaptive, distributed, generative and pervasive software have made object-oriented dynamically typed languages become increasingly popular. These languages offer dynamic software evolution by means of reflection, facilitating ... Keywords: Dynamically typed languages, JIT compilation, Prototype-based object-oriented model, SSCLI, Structural reflection, Virtual machine

Francisco Ortin; Jose Manuel Redondo; J. Baltasar García Perez-Schofield

2009-08-01T23:59:59.000Z

294

Reflection Survey At Coso Geothermal Area (1989) | Open Energy Information  

Open Energy Info (EERE)

Reflection Survey At Coso Geothermal Area (1989) Reflection Survey At Coso Geothermal Area (1989) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Reflection Survey At Coso Geothermal Area (1989) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Reflection Survey Activity Date 1989 Usefulness useful DOE-funding Unknown Exploration Basis Determine the crustul structure of the Coso geothermal system Notes In mid-1989 the authors designed and collected four seismic reflection/refraction profiles that addressed the crustal structure of the Coso geothermal field. The two main east-west and north-south profiles crossed at the southeastern most base of Sugar Loaf Mountain. Both in-line and cross-line Vibroseis and explosion data were recorded on each of these

295

Reflection Survey At Coso Geothermal Area (2008) | Open Energy Information  

Open Energy Info (EERE)

At Coso Geothermal Area (2008) At Coso Geothermal Area (2008) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Reflection Survey At Coso Geothermal Area (2008) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Reflection Survey Activity Date 2008 Usefulness not indicated DOE-funding Unknown Exploration Basis A reflection survey was done to analyze the brittle upper plate structure revealed by reflection seismic data Notes The relationships between upper crustal faults, the brittle-ductile transition zone, and underlying magmatic features imaged by multifold seismic reflection data are consistent with the hypothesis that the Coso geothermal field, which lies within an extensional step-over between dextral faults, is a young, actively developing metamorphic core complex.

296

Seismic Reflection Data and Conceptual Models for Geothermal Development in  

Open Energy Info (EERE)

Seismic Reflection Data and Conceptual Models for Geothermal Development in Seismic Reflection Data and Conceptual Models for Geothermal Development in Nevada Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Seismic Reflection Data and Conceptual Models for Geothermal Development in Nevada Abstract Seismic reflection data were collected in two geothermalareas in Nevada to support geologic structural models andgeothermal well targeting. The data were integrated withsurface mapping, well results, and other geophysical data inconceptual geologic models in both areas. Faults wereinterpreted from reflection data based on reflector offsetsand apparent fault surface reflectors dipping away from therange front. Interpreted faults at Blue Mt., where severalwells have been drilled, correlated with well entries.Subsequent well targeting based on the conceptualstructural model

297

Correction of Radar Reflectivity and Differential Reflectivity for Rain Attenuation at X Band. Part I: Theoretical and Empirical Basis  

Science Conference Proceedings (OSTI)

In this two-part paper, a correction for rain attenuation of radar reflectivity (ZH) and differential reflectivity (ZDR) at the X-band wavelength is presented. The correction algorithm that is used is based on the self-consistent method with ...

S-G. Park; V. N. Bringi; V. Chandrasekar; M. Maki; K. Iwanami

2005-11-01T23:59:59.000Z

298

Accurate top of the atmosphere albedo determination from multiple views of the Multi-angle Imaging Spectro-Radiometer (MISR) instrument  

SciTech Connect

Changes in the Earth`s surface albedo impact the atmospheric and global energy budget and contribute to the global climate change. It is now recognized that multispectral and multiangular views of the Earth`s top of the atmosphere (TOA) albedo are necessary to provide information on albedo changes. In this paper we describe four semi- empirical bidirectional reflectance factor (BRF) models which are inverted for two and three unknowns. The retrieved BRF parameters are then used to compute the TOA spectral albedo for clear sky conditions. Using this approach we find that the albedo can be computed with better than one percent error in the visible and one and a half percent in the near infrared (NIR) for most surface types. Global monitoring of the earth radiation budget is one of the main goals in global change research programs. Thus global measurements of the TOA albedo are important. Our goals is to compute the TOA spectral albedo for clear sky conditions.

Borel, C.C.; Gerstl, S.A.W. [Los Alamos National Lab., NM (United States); Tornow, C. [German Aerospace Research Establishment, Berlin (Germany)

1996-05-01T23:59:59.000Z

299

Solids Fraction Measurement with a Reflective Fiber Optic Probe  

SciTech Connect

A method has been developed to extract solids fraction information from a reflective fiber optic probe. The commercially available reflective fiber optic probe was designed to measure axial particle velocity (both up and down directions). However, the reflected light intensity measured is related to particle size and particle concentration. A light reflection model is used to relate the reflected light intensity to solids fraction. In this model we assume that the reflected light intensity is a fixed fraction, K1, of the total light intensity lost in penetration of a solid layer. Also, the solids fraction is related to particle concentration, N, in the light path, by N = K2 (1- ?), where (1-?) is the solids fraction. The parameters K1 and K2 are determined through a calibration and curve fitting procedure. This paper describes this procedure and the steps taken to derive the values of K1 and K2. It is proposed that the reflective fiber optic can be used for real time measurement of solids fraction in a circulating fluid bed.

Seachman, S.M.; Yue, P.C.; Ludlow, J.C.; Shadle, L.J.

2006-11-01T23:59:59.000Z

300

Whisper gallery mirrors reflectivities from 100 [angstrom] to 500 [angstrom  

SciTech Connect

We have examined optical constants and predicted reflectivities of candidate surface coatings for whisper gallery mirrors in the extreme ultraviolet (100 [Angstrom] to 500 [Angstrom]). Previous work of Vinogradov and coworkers have identified the spectral regime near 100-150 [Angstrom] as particularly promising due to the high whisper gallery mirror reflectivities of the noble metals in the vicinity of their Cooper minima in this regime. We confirm this basic result using newer optical data, and we have sought surface materials which would extend the range over which the whisper gallery mirrors may be used: between 100 to 500 [Angstrom]. We find that substantial whisper gallery mirror reflectivities (near or greater than 50%) are predicted for a variety of elements, and that the TE peak reflection is larger than TM peak reflection by on the order of 10%. However, most of the elements which do reflect well have surfaces that are vulnerable to oxygen contamination, which seriously degrades mirror performance. A cryogenic mirror design using a dynamic solid rare gas surface which has the potential to defeat such surface contaminations is described: it has peak reflectivity of more than 50% centered near 280 [Angstrom]. 8 figs, 18 refs.

Hung, Tsen-Yu; Hagelstein, P.L.

1990-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "reflection radiometer aster" 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

Whisper gallery mirrors reflectivities from 100 {angstrom} to 500 {angstrom}  

Science Conference Proceedings (OSTI)

We have examined optical constants and predicted reflectivities of candidate surface coatings for whisper gallery mirrors in the extreme ultraviolet (100 {Angstrom} to 500 {Angstrom}). Previous work of Vinogradov and coworkers have identified the spectral regime near 100-150 {Angstrom} as particularly promising due to the high whisper gallery mirror reflectivities of the noble metals in the vicinity of their Cooper minima in this regime. We confirm this basic result using newer optical data, and we have sought surface materials which would extend the range over which the whisper gallery mirrors may be used: between 100 to 500 {Angstrom}. We find that substantial whisper gallery mirror reflectivities (near or greater than 50%) are predicted for a variety of elements, and that the TE peak reflection is larger than TM peak reflection by on the order of 10%. However, most of the elements which do reflect well have surfaces that are vulnerable to oxygen contamination, which seriously degrades mirror performance. A cryogenic mirror design using a dynamic solid rare gas surface which has the potential to defeat such surface contaminations is described: it has peak reflectivity of more than 50% centered near 280 {Angstrom}. 8 figs, 18 refs.

Hung, Tsen-Yu; Hagelstein, P.L.

1990-12-31T23:59:59.000Z

302

Reflective optical imaging system for extreme ultraviolet wavelengths  

DOE Patents (OSTI)

This invention is comprised of a projection reflection optical system having two mirrors in a coaxial, four reflection configuration to reproduce the image of an object. The mirrors have aspherical reflection surfaces to provide a very high resolution of object feature wavelengths less than 200 {mu}m, and preferably less than 100 {mu}m. An image resolution of features less than 0.05--0.1 {mu}m, is obtained over a large area field; i.e., 25.4 mm {times} 25.4 mm, with a distortion less than 0.1 of the resolution over the image field.

Viswanathan, V.K.; Newnam, B.E.

1991-12-31T23:59:59.000Z

303

Reduction of Glass Surface Reflectance by Ion Beam Surface Modification  

DOE Green Energy (OSTI)

This is the final report for DOE contract DE-EE0000590. The purpose of this work was to determine the feasibility of the reduction of the reflection from the front of solar photovoltaic modules. Reflection accounts for a power loss of approximately 4%. A solar module having an area of one square meter with an energy conversion efficiency of 18% generates approximately 180 watts. If reflection loss can be eliminated, the power output can be increased to 187 watts. Since conventional thin-film anti-reflection coatings do not have sufficient environmental stability, we investigated the feasibility of ion beam modification of the glass surface to obtain reduction of reflectance. Our findings are generally applicable to all solar modules that use glass encapsulation, as well as commercial float glass used in windows and other applications. Ion implantation of argon, fluorine, and xenon into commercial low-iron soda lime float glass, standard float glass, and borosilicate glass was studied by implantation, annealing, and measurement of reflectance. The three ions all affected reflectance. The most significant change was obtained by argon implantation into both low-iron and standard soda-lime glass. In this way samples were formed with reflectance lower than can be obtained with a single-layer coatings of magnesium fluoride. Integrated reflectance was reduced from 4% to 1% in low-iron soda lime glass typical of the glass used in solar modules. The reduction of reflectance of borosilicate glass was not as large; however borosilicate glass is not typically used in flat plate solar modules. Unlike conventional semiconductor ion implantation doping, glass reflectance reduction was found to be tolerant to large variations in implant dose, meaning that the process does not require high dopant uniformity. Additionally, glass implantation does not require mass analysis. Simple, high current ion implantation equipment can be developed for this process; however, before the process can be employed on full scale solar modules, equipment must be developed for ion implanting large sheets of glass. A cost analysis shows that the process can be economical. Our finding is that the reduction of reflectance by ion beam surface modification is technically and economically feasible. The public will benefit directly from this work by the improvement of photovoltaic module efficiency, and indirectly by the greater understanding of the modification of glass surfaces by ion beams.

Mark Spitzer

2011-03-11T23:59:59.000Z

304

Improved Spatial Resolution For Reflection Mode Infrared Spectromicroscopy  

SciTech Connect

Standard commercial infrared microscopes operating in reflection mode use a mirror to direct the reflected light from the sample to the detector. This mirror blocks about half of the incident light, however, and thus degrades the spatial resolution by reducing the numerical aperture of the objective. Here, we replace the mirror with a 50% beamsplitter to allow full illumination of the objective and retain a way to direct the reflected light to the detector. The improved spatial resolution is demonstrated using a microscope coupled to a synchrotron source.

Bechtel, Hans A; Martin, Michael C.; May, T. E.; Lerch, Philippe

2009-08-13T23:59:59.000Z

305

Standardization of Solar Mirror Reflectance Measurements - Round Robin Test: Preprint  

DOE Green Energy (OSTI)

Within the SolarPaces Task III standardization activities, DLR, CIEMAT, and NREL have concentrated on optimizing the procedure to measure the reflectance of solar mirrors. From this work, the laboratories have developed a clear definition of the method and requirements needed of commercial instruments for reliable reflectance results. A round robin test was performed between the three laboratories with samples that represent all of the commercial solar mirrors currently available for concentrating solar power (CSP) applications. The results show surprisingly large differences in hemispherical reflectance (sh) of 0.007 and specular reflectance (ss) of 0.004 between the laboratories. These differences indicate the importance of minimum instrument requirements and standardized procedures. Based on these results, the optimal procedure will be formulated and validated with a new round robin test in which a better accuracy is expected. Improved instruments and reference standards are needed to reach the necessary accuracy for cost and efficiency calculations.

Meyen, S.; Lupfert, E.; Fernandez-Garcia, A.; Kennedy, C.

2010-10-01T23:59:59.000Z

306

Retrieval of Reflectivity in a Networked Radar Environment  

Science Conference Proceedings (OSTI)

A system for reflectivity and attenuation retrieval for rain medium in a networked radar environment is described. Electromagnetic waves backscattered from a common volume in networked radar systems are attenuated differently along the different ...

V. Chandrasekar; S. Lim

2008-10-01T23:59:59.000Z

307

Solar Radiative Fluxes for Broken Cloud Fields above Reflecting Surfaces  

Science Conference Proceedings (OSTI)

A statistical bidirectional method for including the effects of underlying reflecting surfaces in Monte Carlo simulations of atmospheric photon transport is presented. It is illustrated for the idealized Lambertian surface and a general ...

Howard W. Barker; John A. Davies

1992-05-01T23:59:59.000Z

308

Progress Toward Roll Processing of Solar Reflective Material (Presentation)  

DOE Green Energy (OSTI)

This presentation discusses the goal of this project which was to demonstrate that it is possible to cost-effectively produce high performance solar reflective material using vacuum deposition techniques.

Smilgys, R.; Wallace, S.; Kennedy, C.

2001-04-01T23:59:59.000Z

309

Radar Reflectivity–Based Estimates of Mixed Layer Depth  

Science Conference Proceedings (OSTI)

This study investigates the potential for estimating mixed layer depth by taking advantage of the radial gradients in the radar reflectivity field produced by the large vertical gradients in water vapor mixing ratio that are characteristic of the ...

P. L. Heinselman; P. L. Spencer; K. L. Elmore; D. J. Stensrud; R. M. Hluchan; P. C. Burke

2009-02-01T23:59:59.000Z

310

Calibrating Differential Reflectivity on the WSR-88D  

Science Conference Proceedings (OSTI)

A calibration procedure of differential reflectivity on the Weather Surveillance Radar-1988 Doppler (WSR-88D) is described. It has been tested on NOAA's modified WSR-88D research and development polarimetric radar and is directly applicable to ...

Dusan S. Zrnic; Valery M. Melnikov; John K. Carter

2006-07-01T23:59:59.000Z

311

Internal Wave Reflection and Scatter from Sloping Rough Topography  

Science Conference Proceedings (OSTI)

Internal gravity waves propagating in a uniformly stratified ocean are scattered on reflection from a rough inclined boundary. The boundary is inclined at angle ? to the horizontal and the roughness is represented by superimposed sinusoidal ...

S. A. Thorpe

2001-02-01T23:59:59.000Z

312

On the Interactions of Internal Waves Reflecting from Slopes  

Science Conference Proceedings (OSTI)

Incident internal waves and those reflected from a uniform slope interact at second order. These interactions are considered for incident waves traveling obliquely to the slope in a uniformly stratified rotating fluid. It is found that (i) ...

S. A. Thorpe

1997-09-01T23:59:59.000Z

313

A Rapid Radiative Transfer Model for Reflection of Solar Radiation  

Science Conference Proceedings (OSTI)

A rapid analytical radiative transfer model for reflection of solar radiation in plane-parallel atmospheres is developed based on the Sobolev approach and the delta function transformation technique. A distinct advantage of this model over ...

X. Xiang; E. A. Smith; C. G. Justus

1994-07-01T23:59:59.000Z

314

Reflective Interfaces : assisting teens with stressful situations online  

E-Print Network (OSTI)

This thesis presents the concept of Reflective Interfaces, a novel approach to user experience design that promotes positive behavioral norms. Traditional interface design methodologies such as User Centered Design are ...

Jones, Birago (Birago Korayga)

2012-01-01T23:59:59.000Z

315

A Microphysical Interpretation of Radar Reflectivity–Rain Rate Relationships  

Science Conference Proceedings (OSTI)

The microphysical aspects of the relationship between radar reflectivity Z and rainfall rate R are examined. Various concepts discussed in the literature are integrated into a coherent analytical framework and discussed with a focus on the ...

Matthias Steiner; James A. Smith; Remko Uijlenhoet

2004-05-01T23:59:59.000Z

316

The Relationship of Highly Reflective Clouds to Tropical Climate Anomalies  

Science Conference Proceedings (OSTI)

The interannual variability of tropical convection related to the Southern Oscillation (SO) and regional climate anomalies is studied from satellite-derived estimates of highly reflective clouds (HRC) during 1971–87. The novel HRC data bank ...

Stefan Hastenrath

1990-03-01T23:59:59.000Z

317

Assessing Snowfall Rates from X-Band Radar Reflectivity Measurements  

Science Conference Proceedings (OSTI)

Realistic aggregate snowflake models and experimental snowflake size distribution parameters are used to derive X-band power-law relations between the equivalent radar reflectivity factor Ze and the liquid equivalent snowfall precipitation rate S ...

Sergey Y. Matrosov; Carroll Campbell; David Kingsmill; Ellen Sukovich

2009-11-01T23:59:59.000Z

318

Sustainable Transport: from Bullock Carts to Bugatis: Reflections...  

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

Sustainable Transport: from Bullock Carts to Bugatis: Reflections on Major Transport Issues North and South Speaker(s): Lee Schipper Date: August 16, 2001 - 12:00pm Location: Bldg....

319

Kinematic, Thermodynamic, and Visual Structure of Low-Reflectivity Microbursts  

Science Conference Proceedings (OSTI)

On 9 July 1987, a series of low-reflectivity microbursts were studied over Colorado using dual-Doppler analyses, cloud photogrammetry, and in situ measurements collected by aircraft. These types of wind-shear events are particularly hazardous to ...

Roger M. Wakimoto; Cathy J. Kessinger; David E. Kingsmill

1994-01-01T23:59:59.000Z

320

EM-ONE : an architecture for reflective commonsense thinking  

E-Print Network (OSTI)

This thesis describes EM-ONE, an architecture for commonsense thinking capable of reflective reasoning about situations involving physical, social, and mental dimensions. EM-ONE uses as its knowledge base a library of ...

Singh, Pushpinder, 1972-

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "reflection radiometer aster" 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

Beryllium based multilayers for normal incidence extreme ultraviolet reflectance  

Science Conference Proceedings (OSTI)

We report the experimental results of beryllium based multilayer mirrors for use in the 11.4 nm region. Mirrors using molybdenum as the high-Z material have demonstrated 68.7% peak reflectance at 11.3 nm.

Skulina, K.; Alford, C.; Bionta, R.; Makowiecki, D. [Lawrence Livermore National Lab., CA (United States); Gullikson, E.; Soufli, R.; Kortright, J.; Underwood, J. [Lawrence Berkeley Lab., CA (United States)

1994-11-01T23:59:59.000Z

322

Degradation of Radar Reflectivity by Cloud Attenuation at Microwave Frequency  

Science Conference Proceedings (OSTI)

The main object of this paper is to emphasize that clouds—the nonprecipitating component of condensed atmospheric water—can produce a strong attenuation at operational microwave frequencies, although they present a low reflectivity preventing ...

Olivier Pujol; Jean-François Georgis; Laurent Féral; Henri Sauvageot

2007-04-01T23:59:59.000Z

323

Using parametric {ital B} splines to fit specular reflectivities  

SciTech Connect

Parametric {ital B}-spline curves offer a flexible and appropriate mathematical description of scattering length density profiles in specular reflectivity analysis. Profiles combining smooth and sharp features can be defined in low dimensional representations using control points in the density-depth plane which provide graded local influence on profile shape. These profiles exist in vector spaces defined by {ital B}-spline order and parameter knot set, which can be systematically densified during analysis. Such profiles can easily be rendered as adaptive histograms for reflectivity computation. {ital B}-spline order can be chosen to accommodate the asymptotic (large-{ital Q}) behavior indicated by reflectivity data. We describe an interactive fitting strategy in which the Nelder and Mead simplex method is used in the {ital B}-spline control point space to guide the discovery of profiles that can produce given reflectivity data. Examples using actual and simulated spectra are discussed.

Berk, N.F.; Majkrzak, C.F. [Materials Science and Engineering Laboratory, National Insitute of Standards and Technology, Gaithersburg, Maryland 20899-0001 (United States)] [Materials Science and Engineering Laboratory, National Insitute of Standards and Technology, Gaithersburg, Maryland 20899-0001 (United States)

1995-05-01T23:59:59.000Z

324

Image statistics and the perception of surface reflectance  

E-Print Network (OSTI)

Humans are surprisingly good at judging the reflectance of complex surfaces even when the surfaces are viewed in isolation, contrary to the Gelb effect. We argue that textural cues are important for this task. Traditional ...

Sharan, Lavanya

2005-01-01T23:59:59.000Z

325

A New Relationship between Mean Doppler Velocity and Differential Reflectivity  

Science Conference Proceedings (OSTI)

A new relationship has been established linking the vertical mean Doppler velocity of raindrop spectra and the accompanying differential reflectivities. It is based upon the specific radar combination of a vertically pointing Doppler and a ...

Matthias Steiner

1991-06-01T23:59:59.000Z

326

Can Reflected Extra-equatorial Rossby Waves Drive ENSO?  

Science Conference Proceedings (OSTI)

The possibility that the evolution of the ENSO phenomenon is determined by the reflection of extra-equatorial Rossby waves from the western boundary into the equatorial waveguide has been a subject of recent debate. Observations and some wind-...

William S. Kessler

1991-03-01T23:59:59.000Z

327

Operational Monitoring of Radar Differential Reflectivity Using the Sun  

Science Conference Proceedings (OSTI)

A method for the daily monitoring of the differential reflectivity bias for polarimetric weather radars is presented. Sun signals detected in polar volume data produced during operational scanning of the radar are used. This method is an ...

Iwan Holleman; Asko Huuskonen; Rashpal Gill; Pierre Tabary

2010-05-01T23:59:59.000Z

328

Stratocumulus Cloud Field Reflected Fluxes: The Effect of Cloud Shape  

Science Conference Proceedings (OSTI)

Reflected fluxes are calculated for stratocumulus cloud fields as a function of sky cover, cloud aspect ratio, and cloud shape. Cloud liquid water volume is held invariant as cloud shape is varied so that the results can be utilized more ...

R. M. Welch; B. A. Wielicki

1984-11-01T23:59:59.000Z

329

Single photon reflection and transmission in optomechanical system  

E-Print Network (OSTI)

Cavity Optomechanical system is speedily approaching the regime where the radiation pressure of a single photon displaces the moving mirror. In this paper, we consider a cavity optomechanical system where the cavity field is driven by an external field. In the limit of weak mirror-cavity couplings, we calculate analytically the reflection and transmission rates for cavity field and discuss the effects of mirror-cavity coupling on the reflection and transmission.

M. A. Khan; S. C. Hou; K. Farooq; X. X. Yi

2013-04-22T23:59:59.000Z

330

Reflection-Transmission Quantum Yang-Baxter Equations  

E-Print Network (OSTI)

We explore the reflection-transmission quantum Yang-Baxter equations, arising in factorized scattering theory of integrable models with impurities. The physical origin of these equations is clarified and three general families of solutions are described in detail. Explicit representatives of each family are also displayed. These results allow to establish a direct relationship with the different previous works on the subject and make evident the advantages of the reflection-transmission algebra as an universal approach to integrable systems with impurities.

V. Caudrelier; M. Mintchev; E. Ragoucy; P. Sorba

2004-12-15T23:59:59.000Z

331

Apparatus for and method of correcting for astigmatism in a light beam reflected off of a light reflecting surface  

DOE Patents (OSTI)

A technique for adjustably correcting for astigmatism in a light beam is disclosed herein. This technique utilizes first means which defines a flat, rectangular light reflecting surface having opposite reinforced side edges and which is resiliently bendable, to a limited extent, into different concave and/or convex cylindrical curvatures about a particular axis and second means acting on the first means for adjustably bending the light reflecting surface into a particular selected one of the different curvatures depending upon the astigmatism to be corrected for and for fixedly maintaining the curvature selected. In the embodiment disclosed, the light reflecting surface is adjustably bendable into the selected cylindrical curvature by application of a particular bending moment to the reinforced side edges of the light reflecting surface.

Sawicki, Richard H. (Pleasanton, CA); Sweatt, William (Livermore, CA)

1987-01-01T23:59:59.000Z

332

Reflection Survey At Blue Mountain Area (Fairbank Engineering, 2007) | Open  

Open Energy Info (EERE)

Blue Mountain Area (Fairbank Engineering, 2007) Blue Mountain Area (Fairbank Engineering, 2007) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Reflection Survey At Blue Mountain Area (Fairbank Engineering, 2007) Exploration Activity Details Location Blue Mountain Area Exploration Technique Reflection Survey Activity Date Usefulness useful DOE-funding Unknown Notes A high-resolution seismic reflection survey was conducted by Utah Geophysical, Inc. (1990) along four widely spaced survey lines normal to range front fault sets. The survey was designed primarily to detect silicified zones or zones of argillic alteration, and faulting, to depths of about 300 meters (1000 feet), as part of the precious metals exploration program. One interpretation of the data showed discrete, high-angle faults

333

Reflection Survey (Deangelo, Et Al., 1999) | Open Energy Information  

Open Energy Info (EERE)

Deangelo, Et Al., 1999) Deangelo, Et Al., 1999) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Reflection Survey (Deangelo, Et Al., 1999) Exploration Activity Details Location Unspecified Exploration Technique Reflection Survey Activity Date Usefulness useful DOE-funding Unknown Notes We believe we have demonstrated two sources that can generate S-waves that are appropriate for evaluating geothermal prospects. The first, a vector-explosive package, has never been available to the seismic industry, and the demonstration of its source pe References M. DeAngelo, B.A. Hardage, J. L. Simmons Jr. (1999) Development Of Active Seismic Vector-Wavefield Imaging Technology For Geothermal Applications Retrieved from "http://en.openei.org/w/index.php?title=Reflection_Survey_(Deangelo,_Et_Al.,_1999)&oldid=388218

334

Reflection Survey At Yellowstone Region (Morgan, Et Al., 2003) | Open  

Open Energy Info (EERE)

Yellowstone Region (Morgan, Et Al., 2003) Yellowstone Region (Morgan, Et Al., 2003) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Reflection Survey At Yellowstone Region (Morgan, Et Al., 2003) Exploration Activity Details Location Yellowstone Caldera Geothermal Region Exploration Technique Reflection Survey Activity Date Usefulness not indicated DOE-funding Unknown Notes Simultan eously, we surveyed over 2500 linear km with high-resolution seismic reflection profling that penetrated the upper ~25 m of the lake bottom. References L. A. Morgan, W. C. Shanks, D. A. Lovalvo, S. Y. Johnson, W. J. Stephenson, K. L. Pierce, S. S. Harlan, C. A. Finn, G. Lee, M. Webring, B. Schulze, J. Duhn, R. Sweeney, L. Balistrieri (2003) Exploration And Discovery In Yellowstone Lake- Results From High-Resolution Sonar Imaging,

335

Fiber optic moisture sensor with moisture-absorbing reflective target  

DOE Patents (OSTI)

A method and apparatus for sensing moisture changes by utilizing optical fiber technology. One embodiment uses a reflective target at the end of an optical fiber. The reflectance of the target varies with its moisture content and can be detected by a remote unit at the opposite end of the fiber. A second embodiment utilizes changes in light loss along the fiber length. This can be attributed to changes in reflectance of cladding material as a function of its moisture content. It can also be affected by holes or inserts interposed in the cladding material and/or fiber. Changing light levels can also be coupled from one fiber to another in an assembly of fibers as a function of varying moisture content in their overlapping lengths of cladding material.

Kirkham, Randy R. (Richland, WA)

1987-01-01T23:59:59.000Z

336

Electron reflection from one-dimensional potential barriers  

DOE Green Energy (OSTI)

This report summarizes the relevant experimental evidence for electron reflectivity effects in TEC and describes the analytical effort to better understand electron reflectivity as a function of the potential configuration of the surface layer. The analyses consider rectangular and triangular barrier models with, and without, image potentials. The calculated results are presented and discussed. Details of the solutions are given in Appendices A, B, and C. The computer programs to obtain these results are listed in Appendix D. These analyses demonstrate that cesium-oxygen composites with potential discontinuities around one volt and 20 A thick can be expected to be highly reflective to thermal electrons. Consequently, such composites would be expected to have significant effects on TEC performance.

Balestra, C.L.; Huffman, F.N.; Yang, C.C.

1978-09-01T23:59:59.000Z

337

Reflective insulating blinds for windows and the like  

DOE Patents (OSTI)

Energy-conserving window blinds are provided. The blinds are fabricated from coupled and adjustable slats, each slat having an insulation layer and a reflective surface to face outwardly when the blinds are closed. A range of desired light and air transmission may be selected with the reflective surfaces of the slats adapted to direct sunlight upward toward the ceiling when the blinds are open. When the blinds are closed, the insulation of the slats reduces the heat loss or gain produced by the windows. If desired, the reflective surfaces of the slats may be concave. The edges of the slats are designed to seal against adjacent slats when the blinds are closed to ensure minimum air flow between slats.

Barnes, P.R.; Shapira, H.B.

1979-12-07T23:59:59.000Z

338

Reflective insulating blinds for windows and the like  

DOE Patents (OSTI)

Energy-conserving window blinds are provided. The blinds are fabricated from coupled and adjustable slats, each slat having an insulation layer and a reflective surface to face outwardly when the blinds are closed. A range of desired light and air transmission may be selected with the reflective surfaces of the slats adapted to direct sunlight upward toward the ceiling when the blinds are open. When the blinds are closed, the insulation of the slats reduces the heat loss or gain produced by the windows. If desired, the reflective surfaces of the slats may be concave. The edges of the slats are designed to seal against adjacent slats when the blinds are closed to ensure minimum air flow between slats.

Barnes, Paul R. (Lenoir City, TN); Shapira, Hanna B. (Oak Ridge, TN)

1981-01-01T23:59:59.000Z

339

Research Needs: Glass Solar Reflectance and Vinyl Siding  

DOE Green Energy (OSTI)

The subject of glass solar reflectance and its contribution to permanent vinyl siding distortion has not been extensively studied, and some phenomena are not yet well understood. This white paper presents what is known regarding the issue and identifies where more research is needed. Three primary topics are discussed: environmental factors that control the transfer of heat to and from the siding surface; vinyl siding properties that may affect heat build-up and permanent distortion; and factors that determine the properties of reflected solar radiation from glass surfaces, including insulating window glass. Further research is needed to fully characterize the conditions associated with siding distortion, the scope of the problem, physical properties of vinyl siding, insulating window glass reflection characteristics, and possible mitigation or prevention strategies.

Hart, Robert; Curcija, Charlie; Arasteh, Dariush; Goudey, Howdy; Kohler, Christian; Selkowitz, Stephen

2011-07-07T23:59:59.000Z

340

Critical reflection in a digital media artwork - Playas: homeland mirage  

E-Print Network (OSTI)

The introduction of digital media into the working practice of artists has produced challenges previously unknown to the field of art. This inquiry follows an atypical model of artist-driven research derived from disciplines such as social science and education. Here, an artwork functions as a model that is self-reflective, integrating methodologies in a form that benefits art and science. Using Naturalistic Inquiry, including semi-structured interviews of fifteen participants, the work illustrates a process of creation, analysis and evaluation that places the values of the artist on equal footing with the needs of science. Recently, artists have begun using video game engines as a tool to produce 3D navigable spaces. Using the hybrid video game/installation Playas: Homeland Mirage as a case study, this research examines the impact of technology on the artwork and identifies a number of key issues related to the function of critical reflection in this environment. Rules-of-play were a fundamental pre-requisite to the stimulation of critically reflective experience. The human interface with software and hardware was also a primary factor in reflective experience. Based on participant evaluation and observation, the interface was altered in response to its effect on critical reflection, illustrating how choices in this area impact aesthetic experience. Those with experience in visual art were more likely to engage the work in a critically reflective manner than seasoned video game players who tended to be more interested in scoring and winning. These findings and others inform our understanding of the stimulation of critical reflection in immersive environments and show how we can sensitively integrate technology with meaningful evaluative methods. By repurposing a video game in this manner, we learn about the nature of the video game and the nature of art. This research enables artists to gain a better understanding of the medium to more fully integrate technology within a meaningful practice. Conversely, other fields will benefit from a better understanding of the stimulation of meaning in immersive spaces and gain a comprehensive view of a work that strives to contribute to our culture on a deeper level than as simple entertainment. Ultimately, more fully understanding critical reflection in virtual environments will enable us to create enriched experiences that transcend space to create “real” or “virtual” place.

Stenner, Jack Eric

2007-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "reflection radiometer aster" 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

Effect of window reflections on photonic Doppler velocimetry measurements  

Science Conference Proceedings (OSTI)

Photonic Doppler velocimetry (PDV) has rapidly become a standard diagnostic for measuring velocities in dynamic compression research. While free surface velocity measurements are fairly straightforward, complications occur when PDV is used to measure a dynamically loaded sample through a window. Fresnel reflections can severely affect the velocity and time resolution of PDV measurements, especially for low-velocity transients. Shock experiments of quartz compressed between two sapphire plates demonstrate how optical window reflections cause ringing in the extracted PDV velocity profile. Velocity ringing is significantly reduced by using either a wedge window or an antireflective coating.

Ao, T.; Dolan, D. H. [Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States)

2011-02-15T23:59:59.000Z

342

Total Resonant Transmission and Reflection by Periodic Structures  

E-Print Network (OSTI)

Resonant scattering of plane waves by a periodic slab under conditions close to those that support a guided mode is accompanied by sharp transmission anomalies. For two-dimensional structures, we establish sufficient conditions, involving structural symmetry, under which these anomalies are characterized by total transmission and total reflection at frequencies separated by an arbitrarily small amount. The loci of total reflection and total transmission are real-analytic curves in frequency-wavenumber space that intersect quadratically at a single point corresponding to the guided mode. A single anomaly or multiple anomalies can be excited by the interaction with a single guided mode.

Stephen P. Shipman; Hairui Tu

2011-05-14T23:59:59.000Z

343

Determination of the Scaled Optical Thickness of Clouds from Reflected Solar Radiation Measurements  

Science Conference Proceedings (OSTI)

A method is presented for determining the scaled optical thickness of clouds from reflected solar radiation measurements. The procedure compares measurements of the reflection function with asymptotic expressions for the reflection function of ...

Michael D. King

1987-07-01T23:59:59.000Z

344

Advances in Measuring Solar Reflectance-or, Why That Roof isn...  

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

reflectance is often used to estimate the solar heat gain and rate the "coolness" of roofs and pavements. A solar reflectance property measured by two popular ASTM standard...

345

Bragg Reflectivity of X-rays: At the Limit of the Possible |...  

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

of reflectivity across the sample. Their results, which are published in Nature Photonics, represent a quantum leap to the largest reflectivity measured, at the limit of what...

346

Reflection Survey At Hot Pot Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Reflection Survey At Hot Pot Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Reflection Survey At Hot Pot Area (DOE GTP)...

347

Reflection Survey At New River Area (DOE GTP) | Open Energy Informatio...  

Open Energy Info (EERE)

Reflection Survey At New River Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Reflection Survey At New River Area (DOE GTP)...

348

Removing the veil: personal reflections on educating women in Dubai  

Science Conference Proceedings (OSTI)

This article is a personal reflection on the culture and the education of young women in the United Arab Emirates, a group of seven emirates along the Persian Gulf, which has only been a federated nation since 1971. The rapid pace of development in the ... Keywords: UAE, education, gender, social impact

C. Dianne Martin

2005-12-01T23:59:59.000Z

349

Does your distillation simulation reflect the real world?  

Science Conference Proceedings (OSTI)

The question ``Do you have a simulation?`` is asked during almost every troubleshooting investigation. A question equally important: ``Does your simulation reflect the real world?`` is raised far less frequently. To correctly answer the latter question, it is imperative that the simulation reflects the real world (i.e., plant data). Any mismatch provides a warning of a potential simulation deficiency. A previous paper described a case where a seemingly minor mismatch led to the discovery of a major simulation deficiency. Undiscovered, the deficiency would have led to a failed tower debottleneck. This paper expands on this previous theme, but focuses on column troubleshooting. A simulation that did not reflect the real world steered a troubleshooting investigation toward an incorrect diagnosis and into inadequate solutions. Once revised to reflect the real world, the same simulation proved invaluable for identifying the correct root cause and guiding the investigation toward the proper solution. An initial simulation of an aromatics fractionator revealed no cause for an operational instability apparent in the tower. Field testing of the tower, establishing correct energy balances, overcoming an analytical limitation, and finally, identifying a simulation trap, yielded information that led to revision of the initial simulation. The revised simulation readily identified the cause of the tower instability.

Kister, H.Z. [Brown and Root, Alhambra, CA (United States); Neves, S.B.; Siles, R.C.; Costa Lima, R. da [Copene Petroquimica do Nordeste S.A., Camacari, Bahia (Brazil)

1997-08-01T23:59:59.000Z

350

Designing optimal iBGP route-reflection topologies  

Science Conference Proceedings (OSTI)

The Border Gateway Protocol (BGP) is used today by all Autonomous Systems (AS) in the Internet. Inside each AS, iBGP sessions distribute the external routes among the routers. In large ASs, relying on a full-mesh of iBGP sessions between routers is not ... Keywords: BGP, iBGP topology design, optimization, route-reflection

Marc-Olivier Buob; Steve Uhlig; Mickael Meulle

2008-05-01T23:59:59.000Z

351

Experiences surveying the crowd: reflections on methods, participation, and reliability  

Science Conference Proceedings (OSTI)

Crowdsourcing services such as Amazon's Mechanical Turk (MTurk) provide new venues for recruiting participants and conducting studies; hundreds of surveys may be offered to workers at any given time. We reflect on the results of six related studies we ... Keywords: crowdsourcing, demographics, reliability, surveys

Catherine C. Marshall; Frank M. Shipman

2013-05-01T23:59:59.000Z

352

A 16-ELEMENT REFLECTION GRID AMPLIFIER Frederic Lecuyer1  

E-Print Network (OSTI)

, which can double as a large metal heat sink. Otherwise, the operation of reflection grid amplifiers to improve common- Mirror/Heat Sink Active GridInput Polarizer Active Grid Output Polarizer E Output Beam E Input Beam E Output Beam Differential Transistor Pair E Input Beam Mirror/Heat Sink Active Grid

353

Remote Sensing Of Photosynthetic Processes By Photochemical Reflectance Index (PRI)  

Science Conference Proceedings (OSTI)

The Photochemical Reflectance Index (PRI) has been proposed as a tool for the estimation of leaf and canopy light?use efficiency and photosynthesis from remote?sensing data. The application of the index is based on more than fifteen years of spectroscopic studies at the leaf level

S. Raddi; S. Cortes; E. Vicinelli; F. Magnani

2006-01-01T23:59:59.000Z

354

Prediction of Reflection Cracking in Hot Mix Asphalt Overlays  

E-Print Network (OSTI)

Reflection cracking is one of the main distresses in hot-mix asphalt (HMA) overlays. It has been a serious concern since early in the 20th century. Since then, several models have been developed to predict the extent and severity of reflection cracking in HMA overlays. However, only limited research has been performed to evaluate and calibrate these models. In this dissertation, mechanistic-based models are calibrated to field data of over 400 overlay test sections to produce a design process for predicting reflection cracks. Three cracking mechanisms: bending, shearing traffic stresses, and thermal stress are taken into account to evaluate the rate of growth of the three increasing levels of distress severity: low, medium, and high. The cumulative damage done by all three cracking mechanisms is used to predict the number of days for the reflection crack to reach the surface of the overlay. The result of this calculation is calibrated to the observed field data (severity and extent) which has been fitted with an S-shaped curve. In the mechanistic computations, material properties and fracture-related stress intensity factors are generated using efficient Artificial Neural Network (ANN) algorithms. In the bending and shearing traffic stress models, the traffic was represented by axle load spectra. In the thermal stress model, a recently developed temperature model was used to predict the temperature at the crack tips. This process was developed to analyze various overlay structures. HMA overlays over either asphalt pavement or jointed concrete pavement in all four major climatic zones are discussed in this dissertation. The results of this calculated mechanistic approach showed its ability to efficiently reproduce field observations of the growth, extent, and severity of reflection cracking. The most important contribution to crack growth was found to be thermal stress. The computer running time for a twenty-year prediction of a typical overlay was between one and four minutes.

Tsai, Fang-Ling

2010-12-01T23:59:59.000Z

355

Implementation of solar-reflective surfaces: Materials and utility programs  

SciTech Connect

This report focuses on implementation issues for using solar-reflective surfaces to cool urban heat islands, with specific examples for Sacramento, California. Advantages of solar-reflective surfaces for reducing energy use are: (1) they are cost-effective if albedo is increased during routine maintenance; (2) the energy savings coincide with peak demand for power; (3) there are positive effects on environmental quality; and (4) the white materials have a long service life. Important considerations when choosing materials for mitigating heat islands are identified as albedo, emissivity, durability, cost, pollution and appearance. There is a potential for increasing urban albedo in Sacramento by an additional 18%. Of residential roofs, we estimate that asphalt shingle and modified bitumen cover the largest area, and that built-up roofing and modified bitumen cover the largest area of commercial buildings. For all of these roof types, albedo may be increased at the time of re-roofing without any additional cost. When a roof is repaired, a solar-reflective roof coating may be applied to significantly increase albedo and extend the life of the root Although a coating may be cost-effective if applied to a new roof following installation or to an older roof following repair, it is not cost-effective if the coating is applied only to save energy. Solar-reflective pavement may be cost-effective if the albedo change is included in the routine resurfacing schedule. Cost-effective options for producing light-colored pavement may include: (1) asphalt concrete, if white aggregate is locally available; (2) concrete overlays; and (3) newly developed white binders and aggregate. Another option may be hot-rolled asphalt, with white chippings. Utilities could promote solar-reflective surfaces through advertisement, educational programs and cost-sharing of road resurfacing.

Bretz, S.; Akbari, H.; Rosenfeld, A.; Taha, H.

1992-06-01T23:59:59.000Z

356

Reflected Neutron Effects in Multiplicity Measurements of Bare HEU Assemblies  

SciTech Connect

In a passive multiplicity characterization of highly enriched uranium (HEU) assemblies, fission chains are initiated by the characteristically fast neutrons from spontaneous fission of {sup 238}U and {sup 235}U as well as cosmic-ray spallation neutrons. Active interrogation of HEU uses other physical mechanisms for starting chains by inducing fission from high-energy neutrons, high-energy gamma-rays, delayed neutrons, or thermal neutrons. In all cases a contribution to the initiation of fission chains is the reflection of neutrons that initially escape the assembly and re-enter it after undergoing some scattering. The reflected neutron flux is geometry dependent and a combination of fast and thermal energies. The reflected thermal neutron contribution occurs hundreds of microseconds after the beginning of the fission chain and can be distinguished from the cosmic-ray spallation neutrons unrelated to fission chains, resulting in an HEU detection signature with high signal-to-noise. However, the reflected thermal neutron flux can be eliminated with an efficient thermal neutron absorber to investigate reflected neutron effects. In this paper, active and passive multiplicity measurements with HEU oxide assemblies of up to 16 kg of fuel pins and HEU metal assemblies of up to five 18 kg storage castings are reported. Each case demonstrates the differences in HEU signature when a borated thermal neutron absorber is present and shows the various detectable signatures with 3He proportional counters, the standard detector for differential die-way and neutron multiplicity measurements, and liquid scintillators, a detector capable of operating on the timescale of fission chains.

McConchie, Seth M [ORNL; Hausladen, Paul [ORNL; Mihalczo, John T [ORNL

2010-01-01T23:59:59.000Z

357

Surface roughness effects on the solar reflectance of cool asphalt shingles  

Science Conference Proceedings (OSTI)

We analyze the solar reflectance of asphalt roofing shingles that are covered with pigmented mineral roofing granules. The reflecting surface is rough, with a total area approximately twice the nominal area. We introduce a simple analytical model that relates the 'micro-reflectance' of a small surface region to the 'macro-reflectance' of the shingle. This model uses a mean field approximation to account for multiple scattering effects. The model is then used to compute the reflectance of shingles with a mixture of different colored granules, when the reflectances of the corresponding mono-color shingles are known. Simple linear averaging works well, with small corrections to linear averaging derived for highly reflective materials. Reflective base granules and reflective surface coatings aid achievement of high solar reflectance. Other factors that influence the solar reflectance are the size distribution of the granules, coverage of the asphalt substrate, and orientation of the granules as affected by rollers during fabrication.

Akbari, Hashem; Berdahl, Paul; Akbari, Hashem; Jacobs, Jeffry; Klink, Frank

2008-02-17T23:59:59.000Z

358

Active Reflection Absorption for a Three Dimensional Multidirectional Wave Generator  

E-Print Network (OSTI)

In order to implement an accurate system that allows for absorption of reflected waves impinging to a wave maker (Active Reflection Absorption), it was required to apply a method to estimate properly the direction of arrival of the waves that does it in the fastest way possible. Our wavemaker control system has been prepared to handle an algorithm provided by Bosch-Rexroth where the wave angle estimation is practically locked to a very narrow frequency band (spatial gain-mixer). The system was evaluated with physical tests in a 3D wave basin for different conditions of reflected waves arriving with an angle to the wavemaker front, and acceptable performance has been found for the 3D ARA mode. However, for certain conditions over-compensation or sub-compensation can develop resulting in a poor absorption. This is mainly related to not being able to determine accurately the direction from which the reflected waves travel towards the wavemaker. The present work employed concepts found in the areas of antenna array signal processing and signal propagation, which were applied to this problem. This approach coupled naturally with our wavemaker system since it was prepared with 48 gages that can be employed in an array antenna fashion. A program was codified from an algorithm found in literature to calculate the Direction of Arrival (DOA) of the reflected waves. The focus for the testing of this program was with regular waves. The tests were conducted to validate the program with different angles of incidence and show that for regular waves the program was able to detect accurately the DOA of these in as few as 5 snapshots, with a minimum of 7 gages used as the antenna input. With data obtained directly from the control system of our wavemaker using regular waves, the program was able to determine the DOA. The computational burden of the algorithm is not significant in the case of regular waves. A modification of the program is required to analyze the DOA of reflected irregular waves, which could increase the computational burden. Actual implementation of this program to our control system depends on cooperation with Bosch-Rexroth.

Cruz Castro, Oscar

2009-08-01T23:59:59.000Z

359

Sustainable Transport: from Bullock Carts to Bugatis: Reflections on Major  

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

Sustainable Transport: from Bullock Carts to Bugatis: Reflections on Major Sustainable Transport: from Bullock Carts to Bugatis: Reflections on Major Transport Issues North and South Speaker(s): Lee Schipper Date: August 16, 2001 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Marcia Beck This talk reviews quantitative and qualitative trends in urban transportation and environment, focusing on developing countries. Reviewing recent efforts to look at transportation, the talk adopts a definition of "sustainable transportation" that includes economic and environmental sustainability as well as equity as key criteria. It is argued that governance sustainability is also important if policies and technologies are to reduce the main externalities from urban transport. An important identity is introduced to relate emissions to traffic, modal share, fuel

360

Reflection Survey At Coso Geothermal Area (2001) | Open Energy Information  

Open Energy Info (EERE)

Exploration Activity: Reflection Survey At Coso Geothermal Area (2001) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Reflection Survey Activity Date 2001 Usefulness not indicated DOE-funding Unknown Exploration Basis Look for features that are characteristic of the geothermal producing region not originally seen by imaging the Coso Field using seismic Notes During December of 1999, approximately 32 miles of seismic data were acquired as part of a detailed seismic investigation undertaken by the US Navy Geothermal Program Office. Data acquisition was designed to make effective use of advanced data processing methods, which include Optim's proprietary nonlinear velocity optimization technique and pre-stack Kirchhoff migration. The velocity models from the 2-D lines were combined

Note: This page contains sample records for the topic "reflection radiometer aster" 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

Time Correlations in Backscattering Radar Reflectivity Measurements from Cirrus Clouds  

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

Time Correlations in Backscattering Radar Reflectivity Time Correlations in Backscattering Radar Reflectivity Measurements from Cirrus Clouds K. Ivanova, H. N. Shirer, and E. E. Clothiaux Pennsylvania State University University Park, Pennsylvania T. P. Ackerman Pacific Northwest National Laboratory Richland, Washington Introduction The state variables of the atmosphere exhibit correlations at various spatial and temporal scales. These correlations are crucial for understanding short- and long-term trends in climate. Cirrus clouds are important phenomena in the troposphere affecting climate. To improve future parameterization of cirrus clouds in climate models, we must understand the cloud properties and how they change within the cloud. We consider fluctuations of cloud radar signals obtained at isodepths within cirrus clouds

362

Method and apparatus for inspecting reflection masks for defects  

SciTech Connect

An at-wavelength system for extreme ultraviolet lithography mask blank defect detection is provided. When a focused beam of wavelength 13 nm is incident on a defective region of a mask blank, three possible phenomena can occur. The defect will induce an intensity reduction in the specularly reflected beam, scatter incoming photons into an off-specular direction, and change the amplitude and phase of the electric field at the surface which can be monitored through the change in the photoemission current. The magnitude of these changes will depend on the incident beam size, and the nature, extent and size of the defect. Inspection of the mask blank is performed by scanning the mask blank with 13 nm light focused to a spot a few .mu.m in diameter, while measuring the reflected beam intensity (bright field detection), the scattered beam intensity (dark-field detection) and/or the change in the photoemission current.

Bokor, Jeffrey (Oakland, CA); Lin, Yun (Berkeley, CA)

2003-04-29T23:59:59.000Z

363

On the Complexity of the "Reflections" game David Kempe  

E-Print Network (OSTI)

. A single player tries to hit a given set of light bulbs with a laser beam, by placing mirrors and other beam must be reflected and split with the help of the movable items, so as to hit a set of light bulbs of the bombs that are part of the board must be hit by a beam. In addition to the laser, light bulbs and bombs

Kempe, David

364

Summary report of the Solar Reflective Materials Technology Workshop  

DOE Green Energy (OSTI)

The Solar Reflective Materials Technology Workshop sponsored by the Department of Energy and organized by the Pacific Northwest Laboratory and the Solar Energy Research Institute was held on March 28--30, 1978, in Denver, Colorado. The two and one-half day seminar/workshop was attended by over 95 people representing some 60 private companies and government laboratories. The purpose of the workshop was to assess the ''state-of-the-art'' of solar reflector materials technology, define current mirror design requirements, and make recommendations to DOE for future research and development efforts. The reflector materials are defined for the purpose of this workshop as including all the materials which make up the reflector structure including the actual reflecting surface, the protective coatings, and the support substrate. The reflective surface includes metals, metallic films, metallic alloys, and dielectric or ceramic stacks. The protective coatings, which can be applied to both the front and back of the reflective surface, include such materials as polymer paints and films as well as inorganic coatings such as SiO, MgF/sub 2/ and thin glass. Mirror support structures which have been considered include polymer foams, cellular glass, aluminum honeycomb, wood and paper products, and fiberglass and epoxy composites. The authors of the invited papers were asked to emphasize one or more of four basic areas. These topics included: the requirements and properties for reflector materials, the testing procedures used to evaluate the materials, the results of environmental tests performed on some of the materials, and the actual field experience of solar concentrator structures. Acknowledging that the most severe applications for reflector materials result from high concentration ratio or central receiver concepts, the majority of the speakers addressed specific problems dealing with these concepts. (WHK)

Lind, M.A.; Ault, L.E.

1978-10-01T23:59:59.000Z

365

Bohmian transmission and reflection dwell times without trajectory sampling  

E-Print Network (OSTI)

Within the framework of Bohmian mechanics dwell times find a straightforward formulation. The computation of associated probabilities and distributions however needs the explicit knowledge of a relevant sample of trajectories and therefore implies formidable numerical effort. Here a trajectory free formulation for the average transmission and reflection dwell times within static spatial intervals [a,b] is given for one-dimensional scattering problems. This formulation reduces the computation time to less than 5% of the computation time by means of trajectory sampling.

Sabine Kreidl

2004-06-08T23:59:59.000Z

366

U-043: Attachmate Reflection Buffer Overflow in FTP Client Lets Remote  

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

3: Attachmate Reflection Buffer Overflow in FTP Client Lets 3: Attachmate Reflection Buffer Overflow in FTP Client Lets Remote Servers Execute Arbitrary Code U-043: Attachmate Reflection Buffer Overflow in FTP Client Lets Remote Servers Execute Arbitrary Code November 22, 2011 - 8:00am Addthis PROBLEM: Attachmate Reflection Buffer Overflow in FTP Client Lets Remote Servers Execute Arbitrary Code. PLATFORM: 14.1.1173 and prior versions The following product versions are affected: Reflection for HP version 14.x Reflection for UNIX and OpenVMS version 14.x Reflection for ReGIS Graphics version 14.x Reflection for IBM version 14.x Reflection X version 14.x ABSTRACT: A remote server can execute arbitrary code on the connected target system. reference LINKS: Security Updates and Reflection Attachmate Support Lifecycle Attachmate Downloads

367

U-043: Attachmate Reflection Buffer Overflow in FTP Client Lets Remote  

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

3: Attachmate Reflection Buffer Overflow in FTP Client Lets 3: Attachmate Reflection Buffer Overflow in FTP Client Lets Remote Servers Execute Arbitrary Code U-043: Attachmate Reflection Buffer Overflow in FTP Client Lets Remote Servers Execute Arbitrary Code November 22, 2011 - 8:00am Addthis PROBLEM: Attachmate Reflection Buffer Overflow in FTP Client Lets Remote Servers Execute Arbitrary Code. PLATFORM: 14.1.1173 and prior versions The following product versions are affected: Reflection for HP version 14.x Reflection for UNIX and OpenVMS version 14.x Reflection for ReGIS Graphics version 14.x Reflection for IBM version 14.x Reflection X version 14.x ABSTRACT: A remote server can execute arbitrary code on the connected target system. reference LINKS: Security Updates and Reflection Attachmate Support Lifecycle Attachmate Downloads

368

Analytical study of residential building with reflecting roofs  

SciTech Connect

This report presents an analysis of the effect of roof solar reflectance on the annual heating (cooling) loads, peak heating (cooling) loads, and roof temperatures of the residential buildings. The annual heating (cooling) loads, peak heating (cooling) loads, and exterior roof temperatures for a small compact ranch house are computed using the Thermal Analysis Research Program (TARP). The residential models, with minor modifications in the thermal envelope for different locations, are subjected to hourly weather data for one year compiled in the Weather Year for Energy Calculation (WYEC) for in the following locations: Birmingham, Alabama; Bismarck, North Dakota; Miami, Florida; Phoenix, Arizona; Portland, Maine; and, Washington, D.C. Building loads have been determined for a full factorial experimental design that varies the following parameters of the residential model: solar reflectance of the roof, ceiling thermal resistance, attic ventilation, and attic mass framing area. The computed results for annual heating (cooling) loads and peak heating (cooling) loads are illustrated graphically, both globally for all cities and locally for each geographic location. The effect of peak parameter is ranked (highest to lowest) for effect on annual heating and cooling loads, and peak heating and cooling loads. A parametric study plots the building loads as a function of roof solar reflectance for different levels of ceiling thermal resistances and for each geographic location.

Zarr, R.R.

1998-10-01T23:59:59.000Z

369

Benchmarking of Graphite Reflected Critical Assemblies of UO2  

Science Conference Proceedings (OSTI)

A series of experiments were carried out in 1963 at the Oak Ridge National Laboratory Critical Experiments Facility (ORCEF) for use in space reactor research programs. A core containing 93.2% enriched UO2 fuel rods was used in these experiments. The first part of the experimental series consisted of 253 tightly-packed fuel rods (1.27 cm triangular pitch) with graphite reflectors [1], the second part used 253 graphite-reflected fuel rods organized in a 1.506 cm triangular pitch [2], and the final part of the experimental series consisted of 253 beryllium-reflected fuel rods with a 1.506 cm triangular pitch. [3] Fission rate distribution and cadmium ratio measurements were taken for all three parts of the experimental series. Reactivity coefficient measurements were taken for various materials placed in the beryllium reflected core. The first part of this experimental series has been evaluated for inclusion in the International Reactor Physics Experiment Evaluation Project (IRPhEP) [4] and the International Criticality Safety Benchmark Evaluation Project (ICSBEP) Handbooks, [5] and is discussed below. These experiments are of interest as benchmarks because they support the validation of compact reactor designs with similar characteristics to the design parameters for a space nuclear fission surface power systems. [6

Margaret A. Marshall; John D. Bess

2011-11-01T23:59:59.000Z

370

Bayesian Conditioning, the Reflection Principle, and Quantum Decoherence  

E-Print Network (OSTI)

The probabilities a Bayesian agent assigns to a set of events typically change with time, for instance when the agent updates them in the light of new data. In this paper we address the question of how an agent's probabilities at different times are constrained by Dutch-book coherence. We review and attempt to clarify the argument that, although an agent is not forced by coherence to use the usual Bayesian conditioning rule to update his probabilities, coherence does require the agent's probabilities to satisfy van Fraassen's [1984] reflection principle (which entails a related constraint pointed out by Goldstein [1983]). We then exhibit the specialized assumption needed to recover Bayesian conditioning from an analogous reflection-style consideration. Bringing the argument to the context of quantum measurement theory, we show that "quantum decoherence" can be understood in purely personalist terms---quantum decoherence (as supposed in a von Neumann chain) is not a physical process at all, but an application of the reflection principle. From this point of view, the decoherence theory of Zeh, Zurek, and others as a story of quantum measurement has the plot turned exactly backward.

Christopher A. Fuchs; Ruediger Schack

2011-03-30T23:59:59.000Z

371

Helios model for the optical behavior of reflecting solar concentrators  

DOE Green Energy (OSTI)

The Helios model simulates the optical behavior of reflecting concentrators. The model follows the incident solar radiation through the system (including the atmosphere) and includes all the factors that influence the optical performance of a collector. An important output is the flux-density pattern (W/cm/sup 2/) at a grid of points on a surface such as the absorbing surface of a receiver and its integral (power in watts) over the surface. The angular distribution of sunrays for the radiation incident on a concentrator is modified by convolution, using the fast Fourier transform, to incorporate the effects of other nondeterministic factors such as sun-tracking errors, surface slope errors, and reflectance properties. The analytical methods used for the statistics, the off-axis reflecting optics, the atmospheric effects, and the various coordinate systems are described and illustrated. This model forms a basis for the simulation code HELIOS as well as for other codes under development. Some of the HELIOS routines are described, a few of its capabilities are discussed and illustrated, and comparisons of data with calculations are presented. These capabilities have been used for performance predictions, safety studies, design trade-offs, data analysis problems, the specification and analysis of concentrator quality, and for the general understanding of solar-concentrator technology.

Biggs, F.; Vittitoe, C.N.

1979-03-01T23:59:59.000Z

372

DETERMINING REFLECTANCE SPECTRA OF SURFACES AND CLOUDS ON EXOPLANETS  

SciTech Connect

Planned missions will spatially resolve temperate terrestrial planets from their host star. Although reflected light from such a planet encodes information about its surface, it has not been shown how to establish surface characteristics of a planet without assuming known surfaces to begin with. We present a reanalysis of disk-integrated, time-resolved, multiband photometry of Earth obtained by the Deep Impact spacecraft as part of the EPOXI Mission of Opportunity. We extract reflectance spectra of clouds, ocean, and land without a priori knowledge of the numbers or colors of these surfaces. We show that the inverse problem of extracting surface spectra from such data is a novel and extreme instance of spectral unmixing, a well-studied problem in remote sensing. Principal component analysis is used to determine an appropriate number of model surfaces with which to interpret the data. Shrink-wrapping a simplex to the color excursions of the planet yields a conservative estimate of the planet's endmember spectra. The resulting surface maps are unphysical, however, requiring negative or larger-than-unity surface coverage at certain locations. Our ''rotational unmixing'' supersedes the endmember analysis by simultaneously solving for the surface spectra and their geographical distributions on the planet, under the assumption of diffuse reflection and known viewing geometry. We use a Markov Chain Monte Carlo to determine best-fit parameters and their uncertainties. The resulting albedo spectra are similar to clouds, ocean, and land seen through a Rayleigh-scattering atmosphere. This study suggests that future direct-imaging efforts could identify and map unknown surfaces and clouds on exoplanets.

Cowan, Nicolas B.; Strait, Talia E., E-mail: n-cowan@northwestern.edu [Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA), Northwestern University, 2131 Tech Dr., IL 60208 (United States)

2013-03-01T23:59:59.000Z

373

SiO2 - polyethylene reflected critical assembly  

SciTech Connect

The Planet universal critical assembly machine was used to perform a series of three critical experiments. This experiment used HEU foils reflected by polyethylene and interleaved with plates of SiO{sub 2} glass and polyethylene. Only the experiment performed using the SiO{sub 2} matrix material is evaluated in this report. The assembly was delayed critical with 33 HEU foils or 17 units (sets of HEU foils). The critical assembly has an intermediate neutron spectrum, with 51.2% of the fissions occurring between 0.625 eV and 100 keV. The calculational results show good agreement with the experimental results.

Brewer, R. W. (Roger W.); Sanchez, R. G. (Rene G.)

2001-01-01T23:59:59.000Z

374

Accurate hydrogen depth profiling by reflection elastic recoil detection analysis  

DOE Green Energy (OSTI)

A technique to convert reflection elastic recoil detection analysis spectra to depth profiles, the channel-depth conversion, was introduced by Verda, et al [1]. But the channel-depth conversion does not correct for energy spread, the unwanted broadening in the energy of the spectra, which can lead to errors in depth profiling. A work in progress introduces a technique that corrects for energy spread in elastic recoil detection analysis spectra, the energy spread correction [2]. Together, the energy spread correction and the channel-depth conversion comprise an accurate and convenient hydrogen depth profiling method.

Verda, R. D. (Raymond D.); Tesmer, Joseph R.; Nastasi, Michael Anthony,; Bower, R. W. (Robert W.)

2001-01-01T23:59:59.000Z

375

NIST Transfer radiometers and reference detectors  

Science Conference Proceedings (OSTI)

... We are presently developing a pair of next generation reference detectors: an ... development for use as a primary standard in low power calibrations. ...

2013-04-10T23:59:59.000Z

376

NIST Transfer and working standard radiometers and ...  

Science Conference Proceedings (OSTI)

... routine, monochromator-based spectral power responsivity scale ... with noise-equivalent powers that are ... The NIST-developed first generation Si, Ge ...

2012-10-18T23:59:59.000Z

377

Prototype Cryospheric Experimental Synthetic Aperture Radiometer (CESAR)  

E-Print Network (OSTI)

.W.Lawrence@.nasa.gov 6 Colorado State University, Steven.Reising@ColoState.edu 7 Valparaiso University, Thomas in instrumentation that uses the underside of the fuselage and wing space of Uninhabited Aerial Vehicles (UAVs-Band frequency survey (nanosat), instrumentation developed for soil moisture and salinity measurements (Rad

Reising, Steven C.

378

NIST Primary optical watt radiometer (POWR)  

Science Conference Proceedings (OSTI)

... better optimized for specific transfer wavelengths and power levels. Major Accomplishments: POWR impacts total solar irradiance measurements. ...

2012-11-16T23:59:59.000Z

379

Analytical Land–Atmosphere Radiometer Model  

Science Conference Proceedings (OSTI)

Conversion of radiometric land surface temperature (?r) to an equivalent isothermal (aerodynamic) surface temperature (?i) is important in balancing the land surface energy budget with satellite-based ?r measurements. An analytical land–...

Ayman Suleiman; Richard Crago

2002-02-01T23:59:59.000Z

380

NIST Missile defense transfer radiometer (MDXR)  

Science Conference Proceedings (OSTI)

... test facilities against the NIST primary optical power ... can also evaluate non-Planckian sources that may fall ... and a spectral calibration source for the ...

2010-10-05T23:59:59.000Z

Note: This page contains sample records for the topic "reflection radiometer aster" 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

NIST Thermal infrared transfer radiometer (TXR)  

Science Conference Proceedings (OSTI)

... The primary method uses either the ambient background water bath blackbody and ... where it performed in-situ measurements of various sources in a ...

2010-10-05T23:59:59.000Z

382

Angular velocity control for a windmill radiometer  

Science Conference Proceedings (OSTI)

In this paper, an inexpensive and simple control experiment which could be readily used to demonstrate proportional integral (PI) compensator design through root locus is presented. This work is also a useful example of analog control, which is not often ...

A. Arenas; L. Victoria; F. J. Abellan; J. A. Ibanez

1999-05-01T23:59:59.000Z

383

Benchmark Evaluation of Plutonium Hemispheres Reflected by Steel and Oil  

Science Conference Proceedings (OSTI)

During the period from June 1967 through September 1969 a series of critical experiments was performed at the Rocky Flats Critical Mass Laboratory with spherical and hemispherical plutonium assemblies as nested hemishells as part of a Nuclear Safety Facility Experimental Program to evaluate operational safety margins for the Rocky Flats Plant. These assemblies were both bare and fully or partially oil-reflected. Many of these experiments were subcritical with an extrapolation to critical configurations or critical at a particular oil height. Existing records reveal that 167 experiments were performed over the course of 28 months. Unfortunately, much of the data was not recorded. A reevaluation of the experiments had been summarized in a report for future experimental and computational analyses. This report examines only fifteen partially oil-reflected hemispherical assemblies. Fourteen of these assemblies also had close-fitting stainless-steel hemishell reflectors, used to determine the effective critical reflector height of oil with varying steel-reflector thickness. The experiments and their uncertainty in keff values were evaluated to determine their potential as valid criticality benchmark experiments of plutonium.

John Darrell Bess

2008-06-01T23:59:59.000Z

384

Progress toward achieving a commercially viable solar reflective material  

DOE Green Energy (OSTI)

Solar thermal technologies use large mirrors to concentrate sunlight for renewable power generation. The development of advanced reflector materials is important to the viability of electricity production by solar thermal energy systems. The reflector materials must be low in cost and maintain high specular reflectance for extended lifetimes under severe outdoor environments. Production processes associated with candidate materials must be scalable to mass production techniques. A promising low-cost construction uses a stainless steel foil substrate with a silver reflective layer protected by an optically transparent oxide topcoat. Thick (2 to 4 micron), dense alumina coatings provide durable protective layers. The excellent performance of alumina-coated reflector materials in outdoor and accelerated testing suggests that a larger field trial of the material is warranted. The key to producing a greater quantity of material for field deployment and testing without incurring substantial capital is the use of a chilled drum coater. An existing chamber is being modified, and the deposition rate will be increased prior to the installation of a drum coater to produce 1-ft wide by 10-ft long strips of solar reflector material. The production and performance of these materials are discussed.

Kennedy, C.E.; Smilgys, R.V. [National Renewable Energy Lab., Golden, CO (United States)]|[Science Applications International Corp., McLean, VA (United States)

1998-06-01T23:59:59.000Z

385

90-Degree Bragg Reflection from a Thin Crystalline Film  

SciTech Connect

Experimental observations of synchrotron radiation diffraction from a thin surface layer at a 90-degree Bragg reflection are reported and discussed. The synchrotron experiments were performed using a bending magnet source at the European Synchrotron Radiation Facility (ESRF) in France and undulator sources at the Advanced Photon Source (APS) in the U.S. and SPring-8 in Japan. Thin (0.5, 1.0 and 1.5 micron) InGaAs films deposited on a GaAs (100) substrate were studied near the 90- degree using the GaAs (800) reflection. A slight, less than 0.1%, difference in the lattice spacing between the layer and the substrate is sufficient to allow a direct and exclusive observation of the diffraction profile from a thin layer as if it was a 'free-standing' thin crystal. This research opens new possibilities for x-ray optical schemes and the development of novel analytical techniques for surface/interface x-ray diffraction studies.

Nikulin, A.Y.; Davis, J.R.; Usher, B.F.; Freund, A.K.; Ishikawa, T.

2001-09-11T23:59:59.000Z

386

Meteorological and Astronomical Influences on Radar Reflectivity in the Convective Boundary Layer  

Science Conference Proceedings (OSTI)

Observations are presented of time-varying radar reflectivity during a partial solar eclipse in Oklahoma. The measurements from a radar of 10-cm wavelength, were obtained in the clear-air boundary layer. The reflectivity changes closely follow ...

Robert M. Rabin; Richard J. Doviak

1989-11-01T23:59:59.000Z

387

V-142: Oracle Java Reflection API Flaw Lets Remote Users Execute...  

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

2: Oracle Java Reflection API Flaw Lets Remote Users Execute Arbitrary Code V-142: Oracle Java Reflection API Flaw Lets Remote Users Execute Arbitrary Code April 25, 2013 - 12:14am...

388

The Effect of Cloud Sides on Reflected Solar Radiation as Deduced from Satellite Observations  

Science Conference Proceedings (OSTI)

We report the observation of a feature that is characteristic of the reflection of solar radiation from absorbing, finite clouds. When absorption takes place, more radiation can be reflected by broken cloud fields than by extensive unbroken cloud ...

James A. Coakley Jr.; Roger Davies

1986-05-01T23:59:59.000Z

389

A Differential Reflectivity Radar Hall Measurement Technique: Observations during the Denver Hailstorm of 13 June 1984  

Science Conference Proceedings (OSTI)

A differential reflectivity radar technique for observing hailstorms is demonstrated using measurements obtained during the 13 June 1984 Denver hailstorm. The hail regions of the storm are identified with the differential reflectivity hail ...

K. Aydin; Y. Zhao; T. A. Seliga

1990-02-01T23:59:59.000Z

390

General Probability-matched Relations between Radar Reflectivity and Rain Rate  

Science Conference Proceedings (OSTI)

A method of deriving the relation between radar-observed reflectivities Ze and gauge-measured rain intensity, R is presented. It is based on matching the probabilities of the two variables. The observed reflectivity is often very different from ...

Daniel Rosenfeld; David B. Wolff; David Atlas

1993-01-01T23:59:59.000Z

391

Experimental studies of a teleoperator system with projection-based force reflection algorithms  

Science Conference Proceedings (OSTI)

Results of experimental studies of a teleoperator system with projection-based force reflection algorithms in the presence of communication constraints are presented. It is demonstrated that, using the projection-based force reflection algorithms, the ...

Ilia G. Polushin; Peter X. Liu; Chung-Horng Lung

2009-10-01T23:59:59.000Z

392

Centrifuging of Hydrometeors and Debris in Tornadoes: Radar-Reflectivity Patterns and Wind-Measurement Errors  

Science Conference Proceedings (OSTI)

High-resolution Doppler radar observations of tornadoes reveal a distinctive tornado-scale signature with the following properties: a reflectivity minimum aloft inside the tornado core (described previously as an “eye”), a high-reflectivity tube ...

David C. Dowell; Curtis R. Alexander; Joshua M. Wurman; Louis J. Wicker

2005-06-01T23:59:59.000Z

393

Airborne Doppler Lidar Investigation of Sea Surface Reflectance at a 355-nm Ultraviolet Wavelength  

Science Conference Proceedings (OSTI)

The analysis of the sea surface reflectance for different incidence angles based on observations of an airborne Doppler lidar at an ultraviolet wavelength of 355 nm is described. The results were compared to sea surface reflectance models, ...

Zhigang Li; Christian Lemmerz; Ulrike Paffrath; Oliver Reitebuch; Benjamin Witschas

2010-04-01T23:59:59.000Z

394

An Experimental Study of Small-Scale Variability of Radar Reflectivity Using Disdrometer Observations  

Science Conference Proceedings (OSTI)

Analysis of data collected by four disdrometers deployed in a 1-km2 area is presented with the intent of quantifying the spatial variability of radar reflectivity at small spatial scales. Spatial variability of radar reflectivity within the radar ...

Benjamin J. Miriovsky; A. Allen Bradley; William E. Eichinger; Witold F. Krajewski; Anton Kruger; Brian R. Nelson; Jean-Dominique Creutin; Jean-Marc Lapetite; Gyu Won Lee; Isztar Zawadzki; Fred L. Ogden

2004-01-01T23:59:59.000Z

395

Reflecting the Revised PM 2.5 National Ambient Air Quality Standard...  

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

Reflecting the Revised PM 2.5 National Ambient Air Quality Standard in NEPA Evaluations Reflecting the Revised PM 2.5 National Ambient Air Quality Standard in NEPA Evaluations This...

396

Disdrometer Measurements during an Intense Rainfall Event in Central Illinois: Implications for Differential Reflectivity Radar Observations  

Science Conference Proceedings (OSTI)

Empirical relationships for estimating rainfall rate, liquid water content and median volume diameter from radar measurements of reflectivity factor and differential reflectivity are derived from a disdrometer record of a highly variable, heavy ...

T. A. Seliga; K. Aydin; H. Direskeneli

1986-06-01T23:59:59.000Z

397

Aberration-free, all-reflective laser pulse stretcher  

DOE Patents (OSTI)

An all-reflective pulse stretcher for laser systems employing chirped-pulse amplification enables on-axis use of the focusing mirror which results in ease of use, significantly decreased sensitivity to alignment and near aberration-free performance. By using a new type of diffraction grating which contains a mirror incorporated into the grating, the stretcher contains only three elements: 1) the grating, 2) a spherical or parabolic focusing mirror, and 3) a flat mirror. Addition of a fourth component, a retro-reflector, enables multiple passes of the same stretcher resulting in stretching ratios beyond the current state of the art in a simple and compact design. The pulse stretcher has been used to stretch pulses from 20 fsec to over 600 psec (a stretching ratio in excess of 30,000).

Perry, Michael D. (Livermore, CA); Banks, Paul S. (Livermore, CA); Stuart, Brent C. (Fremont, CA); Fochs, Scott N. (Livermore, CA)

1999-09-28T23:59:59.000Z

398

Wavelength Dependent Reflectance Functions Jay S. Gondek, Gary W. Meyer, Jonathan G. Newman  

E-Print Network (OSTI)

reflected from a paint or a plastic is not completely determined by the absorptive properties of the pigment, the spatial distribution of the light reflected from multilayer systems (such as an iridescent paint) is onlyWavelength Dependent Reflectance Functions Jay S. Gondek, Gary W. Meyer, Jonathan G. Newman

Meyer, Gary

399

Linearity and CNR Improvement Technologies against Optical Reflection inFiber-Oriented Wireless Access Systems  

Science Conference Proceedings (OSTI)

It is important to consider optical reflection conditions when designing fiber-oriented wireless access systems around subcarrier optical transmission since the noise characteristic can be significantly degraded by optical reflection, especially ... Keywords: intensity noise, optical reflection, predistorter, subcarrier optical transmission, superimposed subcarrier modulation, superluminescent diode

Yuji Aburakawa; Hiroyuki Ohtsuka

2000-11-01T23:59:59.000Z

400

Solar Reflectance Index (SRI) Calculation Worksheet SRI-WS Computer Generated Form  

E-Print Network (OSTI)

Solar Reflectance Index (SRI) Calculation Worksheet SRI-WS Computer Generated Form Date: Climate Roof) Roofing products with high solar reflectance and thermal emittance are referred to as "Cool Roof hot, light-colored surfaces reflect solar energy and stay cooler. However, high emittance is also

Note: This page contains sample records for the topic "reflection radiometer aster" 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

Modeling Electromagnetic Reflectivity of Agbabu Oil Sand from Hyperspectral Infrared Reflectance Spectra and Dielectric Properties at L-, C- and X-Band Frequencies  

Science Conference Proceedings (OSTI)

In this paper remote identification of oil sand reservoirs from synthetic aperture radar (SAR) is enhanced by accurate modeling of the electromagnetic (EM) reflectivity of Agbabu oil sands. This is demonstrated using a novel combination of hyperspectral ... Keywords: EM Reflectivity, Computer Simulation, Agbabu Oil Sand, Dielectric property, Petroleum Exploration

Maurice Ezeoke, Kenneth Tong

2013-06-01T23:59:59.000Z

402

Calibration Accuracy Of Aerial Multispectral Reflectance Images And Estimation Of Error Sources  

E-Print Network (OSTI)

: We have performed a systematic study of the calibration accuracy of multispectral aerial reflectance images. The study is part of the improvement of change detection for aerial and satellite multispectral images. It is based on (a) a multitemporal image data set from the multispectral airborne scanner Daedalus AADS 1268 and (b) simultaneously made ground based hyperspectral reflectance measurements. Reflectance images were obtained from the raw images by processing with the program package SENSAT-5, using standard urban atmospheres in the MODTRAN code. The systematic uncertainty of the resulting reflectance spectra is mainly due to the uncertainty in the atmospheric parameters. It can be reduced by fitting the Daedalus spectra to ground truth hyperspectral reflectance measurements of selected surfaces. The resulting uncertainty oe ae =ae of the reflectance ae is estimated to be 11.0 % on average. KEY WORDS: Remote sensing, Reflectance, Error sources 1 INTRODUCTION Remotely sensed ...

Andre Rothkirch; Martin Kollewe; Hartwig Spitzer

1998-01-01T23:59:59.000Z

403

DESIGN AND CONSTRUCTION OF A FORCE-REFLECTING TELEOPERATION SYSTEM  

Science Conference Proceedings (OSTI)

For certain applications, such as space servicing, undersea operations, and hazardous material handling tasks in nuclear reactors, the environments can be uncertain, complex, and hazardous. Lives may be in danger if humans were to work under these conditions. As a result, a man-machine system--a teleoperator system--has been developed to work in these types of environments. In a typical teleoperator system, the actual system operates at a remote site; the operator located away from this system usually receives visual information from a video image and/or graphical animation on the computer screen. Additional feedback, such as aural and force information, can significantly enhance performance of the system. Force reflection is a type of feedback in which forces experienced by the remote manipulator are fed back to the manual controller. Various control methods have been proposed for implementation on a teleoperator system. In order to examine different control schemes, a one Degree-Of-Freedom (DOF) Force-Reflecting Manual Controller (FRMC) is constructed and integrated into a PC. The system parameters are identified and constructed as a mathematical model. The Proportional-Integral-Derivative (PID) and fuzzy logic controllers are developed and tested experimentally. Numerical simulation results obtained from the mathematical model are compared with those of experimental data for both types of controllers. In addition, the concept of a telesensation system is introduced. A telesensation system is an advanced teleoperator system that attempts to provide the operator with sensory feedback. In this context, a telesensation system integrates the use of a Virtual Reality (VR) unit, FRMC, and Graphical User Interface (GUI). The VR unit is used to provide the operator with a 3-D visual effect. Various commercial VR units are reviewed and features compared for use in a telesensation system. As for the FRMC, the conceptual design of a 3-DOF FRMC is developed in an effort to make the system portable, compact, and lightweight. A variety of design alternatives are presented and evaluated. Finally, a GUI software package is developed to interface with several teleoperation unit components. These components include an industrial robot, electric motor, encoder, force/torque sensor, and CCD camera. The software includes features such as position scaling, force scaling, and rereferencing and is intended to provide a sound basis for the development of a multi-DOF FRMC system in the future.

M.A. Ebadian, Ph.D.

1999-01-01T23:59:59.000Z

404

Effects of Reflection by Natural Surfaces on the Radiation Emerging from the Top of the Earth's Atmosphere  

Science Conference Proceedings (OSTI)

The radiation emerging from the top of the earth's atmosphere is affected by the reflection characteristics of the underlying surface. Laboratory-gathered bidirectional reflectance data were used to characterize the reflection matrix for three ...

Bruce W. Fitch

1981-12-01T23:59:59.000Z

405

Simulation studies for the detection of changes in broadband albedo and shortwave nadir reflectance spectra under a climate change scenario  

E-Print Network (OSTI)

the Earth’s reflected solar radiation. While Pallé et al. [of the reflected solar radiation [Wielicki et al. , 1995].the nadir reflectance of solar radiation from Earth to space

Feldman, D.R.

2013-01-01T23:59:59.000Z

406

Water-Moderated and -Reflected Slabs of Uranium Oxyfluoride  

SciTech Connect

A series of ten experiments were conducted at the Oak Ridge National Laboratory Critical Experiment Facility in December 1955, and January 1956, in an attempt to determine critical conditions for a slab of aqueous uranium oxyfluoride (UO2F2). These experiments were recorded in an Oak Ridge Critical Experiments Logbook and results were published in a journal of the American Nuclear Society, Nuclear Science and Engineering, by J. K. Fox, L. W. Gilley, and J. H. Marable (Reference 1). The purpose of these experiments was to obtain the minimum critical thickness of an effectively infinite slab of UO2F2 solution by extrapolation of experimental data. To do this the slab thickness was varied and critical solution and water-reflector heights were measured using two different fuel solutions. Of the ten conducted experiments eight of the experiments reached critical conditions but the results of only six of the experiments were published in Reference 1. All ten experiments were evaluated from which five critical configurations were judged as acceptable criticality safety benchmarks. The total uncertainty in the acceptable benchmarks is between 0.25 and 0.33 % ?k/keff. UO2F2 fuel is also evaluated in HEU-SOL-THERM-043, HEU-SOL-THERM-011, and HEU-SOL-THERM-012, but these those evaluation reports are for large reflected and unreflected spheres. Aluminum cylinders of UO2F2 are evaluated in HEU-SOL-THERM-050.

Margaret A. Marshall; John D. Bess; J. Blair Briggs; Clinton Gross

2010-09-01T23:59:59.000Z

407

Solar reflector soiling pattern distributions and reflectance measurement requirements  

DOE Green Energy (OSTI)

Short-term specular reflectance losses from optical surfaces used in the collection or concentration of solar energy results in significant reduction of these systems' output. Losses range from 0.1% to 1.0% per day, approaching asymptotes of 25% to 60% for periods greater than one year, depending onsite and season. To appropriately assess the value of a particular location for the production of power, consideration of the rates of soiling and strategies to minimize losses resulting from soiling must be considered. Strategies for measuring the optical performance of reflector materials to a specified degree of accuracy have been developed, according to the types of soiling patterns observed. It was found most soiling occurs with the accumulation of particulates in spots of different sizes, and the spot sizes follow a lognormal distribution. For most practical situations, it was determined that 10 measurements with a 1-cm-diameter beam are enough to place the average value within 3% of the true value, with a confidence level of 95%.

Kidney, K. (Colorado Univ., Denver, CO (USA))

1990-10-01T23:59:59.000Z

408

Criticality Benchmark Analysis of Water-Reflected Uranium Oxyfluoride Slabs  

Science Conference Proceedings (OSTI)

A series of twelve experiments were conducted in the mid 1950's at the Oak Ridge National Laboratory Critical Experiments Facility to determine the critical conditions of a semi-infinite water-reflected slab of aqueous uranium oxyfluoride (UO2F2). A different slab thickness was used for each experiment. Results from the twelve experiment recorded in the laboratory notebook were published in Reference 1. Seven of the twelve experiments were determined to be acceptable benchmark experiments for the inclusion in the International Handbook of Evaluated Criticality Safety Benchmark Experiments. This evaluation will not only be available to handbook users for the validation of computer codes and integral cross-section data, but also for the reevaluation of experimental data used in the ANSI/ANS-8.1 standard. This evaluation is important as part of the technical basis of the subcritical slab limits in ANSI/ANS-8.1. The original publication of the experimental results was used for the determination of bias and bias uncertainties for subcritical slab limits, as documented by Hugh Clark's paper 'Subcritical Limits for Uranium-235 Systems'.

Margaret A. Marshall; John D. Bess

2009-11-01T23:59:59.000Z

409

Albedo and Reflection Spectra of Extrasolar Giant Planets  

E-Print Network (OSTI)

We generate theoretical albedo and reflection spectra for a full range of extrasolar giant planet (EGP) models, from Jovian to 51-Pegasi class objects. Our albedo modeling utilizes the latest atomic and molecular cross sections, a Mie theory treatment of extinction by condensates, a variety of particle size distributions, and an extension of the Feautrier radiative transfer method which allows for a general treatment of the scattering phase function. We find that due to qualitative similarities in the compositions and spectra of objects within each of four broad effective temperature ranges, it is natural to establish four representative EGP albedo classes: a ``Jovian'' class (T$_{\\rm eff} \\lesssim 150$ K; Class I) with tropospheric ammonia clouds, a ``water cloud'' class (T$_{\\rm eff} \\sim 250$ K; Class II) primarily affected by condensed H$_2$O, a ``clear'' class (T$_{\\rm eff} \\gtrsim 350$ K; Class III) which lacks clouds, and a high-temperature class (T$_{\\rm{eff}}$ $\\gtrsim$ 900 K; Class IV) for which alk...

Sudarsky, D; Pinto, P A; Sudarsky, David; Burrows, Adam; Pinto, Philip

1999-01-01T23:59:59.000Z

410

Reflection and Transmission at the Apparent Horizon during Gravitational Collapse  

E-Print Network (OSTI)

We examine the wave-functionals describing the collapse of a self-gravitating dust ball in an exact quantization of the gravity-dust system. We show that ingoing (collapsing) dust shell modes outside the apparent horizon must necessarily be accompanied by outgoing modes inside the apparent horizon, whose amplitude is suppressed by the square root of the Boltzmann factor at the Hawking temperature. Likewise, ingoing modes in the interior must be accompanied by outgoing modes in the exterior, again with an amplitude suppressed by the same factor. A suitable superposition of the two solutions is necessary to conserve the dust probability flux across the apparent horizon, thus each region contains both ingoing and outgoing dust modes. If one restricts oneself to considering only the modes outside the apparent horizon then one should think of the apparent horizon as a partial reflector, the probability for a shell to reflect being given by the Boltzmann factor at the Hawking temperature determined by the mass contained within it. However, if one considers the entire wave function, the outgoing wave in the exterior is seen to be the transmission through the horizon of the interior outgoing wave that accompanies the collapsing shells. This transmission could allow information from the interior to be transferred to the exterior.

Cenalo Vaz; L. C. R. Wijewardhana

2010-07-22T23:59:59.000Z

411

Plasma particle and energy reflection at a wall with an obliquely incident magnetic field  

SciTech Connect

The particle and energy reflection coefficients are calculated for a plasma incident at a wall with an obliquely incident magnetic field. The salient result of these calculations is that the reflection coefficients can approach unity when the magnetic field is incident at grazing angles. This reflection of particles and energy will be an important process in determining the particle and energy balance in the edge plasma.

Knize, R.J.

1985-07-01T23:59:59.000Z

412

Reflection Survey At Fish Lake Valley Area (DOE GTP) | Open Energy...  

Open Energy Info (EERE)

Fish Lake Valley Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Reflection Survey At Fish Lake Valley Area (DOE GTP) Exploration...

413

Measuring solar reflectance-Part I: Defining a metric that accurately...  

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

I: Defining a metric that accurately predicts solar heat gain Title Measuring solar reflectance-Part I: Defining a metric that accurately predicts solar heat gain Publication Type...

414

Home, Home (Video) on the Range: Reflections on Small-Town Video Stores in 2010  

E-Print Network (OSTI)

theory, and practices of video culture in the United States.Home, Home (Video) on the RangeReflections on Small-Town Video Stores in 2010 Daniel

Herbert, Daniel

2010-01-01T23:59:59.000Z

415

The reflective lens : the effects of video analysis on preservice teacher development  

E-Print Network (OSTI)

2004- 2005 PACT Teaching Event analysis. The Reflection taskof the PACT Teaching Event analysis also show the areas ofCorrelation analysis: PACT Teaching Event Task scores. As

Halter, Christopher P.

2006-01-01T23:59:59.000Z

416

A Relationship between Reflectivity and Snow Rate for a High-Altitude S-Band Radar  

Science Conference Proceedings (OSTI)

An important application of radar reflectivity measurements is their interpretation as precipitation intensity. Empirical relationships exist for converting microwave backscatter retrieved from precipitation particles (represented by an equivalent ...

Jonathan P. Wolfe; Jefferson R. Snider

2012-06-01T23:59:59.000Z

417

Soliton propagation, reflection, and transmission in an inhomogeneous plasma with trapped electrons  

Science Conference Proceedings (OSTI)

Transmission and reflection of solitons from a semitransparent grid in an inhomogeneous plasma in the presence of trapped electrons is studied analytically. Conditions are obtained for the obliqueness of the propagation and the drift velocity of ions for the soliton transmission and reflection. Also, a transmission-reflection conservation law is derived. The contribution of trapped electrons to the solitons' propagation and their reflection and transmission is examined through energy, amplitude, and width of the solitons, in addition to the effect of temperature and drift of the ions.

Aziz, Farah; Malik, Hitendra K.; Stroth, Ulrich [Institut fuer Plasmaforschung, Universitaet Stuttgart, 70569 Stuttgart (Germany)

2011-04-15T23:59:59.000Z

418

Anatomy-Based Algorithms for Detecting Oral Cancer Using Reflectance and Fluorescence Spectroscopy  

E-Print Network (OSTI)

OBJECTIVES: We used reflectance and fluorescence spectroscopy to noninvasively and quantitatively distinguish benign from dysplastic/malignant oral lesions. We designed diagnostic algorithms to account for differences in ...

McGee, Sasha

419

Reflection mass spectrometry technique for monitoring and controlling composition during molecular beam epitaxy  

DOE Patents (OSTI)

This invention is comprised of a method for on-line accurate monitoring and precise control of molecular beam epitaxial growth of Groups III-III-V or Groups III-V-V layers in an advanced semiconductor device incorporates reflection mass spectrometry. The reflection mass spectrometry is responsive to intentional perturbations in molecular fluxes incident on a substrate by accurately measuring the molecular fluxes reflected from the substrate. The reflected flux is extremely sensitive to the state of the growing surface and the measurements obtained enable control of newly forming surfaces that are dynamically changing as a result of growth.

Brennan, T.M.; Hammons, B.E.; Tsao, J.Y.

1990-08-15T23:59:59.000Z

420

Reflection mass spectrometry technique for monitoring and controlling composition during molecular beam epitaxy  

DOE Patents (OSTI)

A method for on-line accurate monitoring and precise control of molecular beam epitaxial growth of Groups III-III-V or Groups III-V-V layers in an advanced semiconductor device incorporates reflection mass spectrometry. The reflection mass spectrometry is responsive to intentional perturbations in molecular fluxes incident on a substrate by accurately measuring the molecular fluxes reflected from the substrate. The reflected flux is extremely sensitive to the state of the growing surface and the measurements obtained enable control of newly forming surfaces that are dynamically changing as a result of growth.

Brennan, Thomas M. (Albuquerque, NM); Hammons, B. Eugene (Tijeras, NM); Tsao, Jeffrey Y. (Albuquerque, NM)

1992-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "reflection radiometer aster" 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

Reflection Survey At Rye Patch Area (DOE GTP) | Open Energy Informatio...  

Open Energy Info (EERE)

Rye Patch Area (DOE GTP) Exploration Activity Details Location Rye Patch Area Exploration Technique Reflection Survey Activity Date Usefulness not indicated DOE-funding Unknown...

422

Home, Home (Video) on the Range: Reflections on Small-Town Video Stores in 2010  

E-Print Network (OSTI)

Home,Home (Video) on the Range Reflections on Small-Town VideoFields Journal no. 1 (2010) Home, Home (Video) on the Range

Herbert, Daniel

2010-01-01T23:59:59.000Z

423

Diagnosing breast cancer using diffuse reflectance spectroscopy and intrinsic fluorescence spectroscopy  

E-Print Network (OSTI)

Using diffuse reflectance spectroscopy and intrinsic fluorescence spectroscopy, we have developed an algorithm that successfully classifies normal breast tissue, fibrocystic change, fibroadenoma, and infiltrating ductal ...

Fitzmaurice, Maryann

424

CONCRETE REFLECTED ARRAYS OF U(93.2) METAL  

SciTech Connect

During the period from 1963 – 1973, experiments involving highly enriched uranium units were performed at the Oak Ridge National Laboratory Critical Experiments Facility to determine various critical configurations of three-dimensional arrays. The experiments formed a four-part series, and were reported by several different experimenters; the results of interest for this evaluation are those reported for the fourth experimentation, Critical Three-Dimensional Arrays of Neutron Interacting Units: Part IV, published and performed by D.W.Magnuson (Ref 1). Information is also available in the logbook . This set of experiments utilized subcritical metal units on a split table apparatus to determine critical configurations for 2×2×2 arrangements of highly enriched uranium reflected by concrete. Magnuson manipulated the configuration of several uranium cylinders and blocks within a concrete reflector. The different permutations utilized uranium cylinders of two different heights in various positions in the three dimensional array; certain cases also placed thin uranium blocks on top of the cylinders. The thickness of the surrounding concrete, as well as the inner dimensions of the concrete reflector was also varied in certain cases. The variations resulted in fourteen different experimental permutations or configurations. All fourteen configurations were judged to be unacceptable for use as criticality safety benchmarks. All experiments were initially evaluated; however only three configurations were evaluated in detail. Configurations 2, 4, 6 and 12 were not evaluated in detail because they are subcritical and configurations 5, 7, 8, 9, and 10 were also were not evaluated in detail because they were supercritical by more than beta effective (~0.007), or prompt critical. The experiments evaluated in detail for this benchmark were configurations 1, 3, and 11. The experimental report also contains the information for HEU-MET-FAST-056. Closely related work has been recorded in HEU-MET-FAST-053, which is a benchmark evaluation of a different series of three dimensional array experiments with four different moderator materials. HEU-MET-FAST-023 and HEU-MET-FAST-026 are also related because they utilize the same metal cylinders as these experiments.

Mackenzie Gorham; John D. Bess; J. Blair Briggs; Virginia Dean; Davis Reed

2010-09-01T23:59:59.000Z

425

History & Reflections of Engineering at Lawrence Livermore National Laboratory  

SciTech Connect

I thought it was important to relate how this project began. Jens Mahler, Mechanical Engineering Deputy Associate Director, recalls that during a discussion between him and Wally Decker, Wally suggested that he document the significant events and the organization of the Mechanical Engineering Department since 1952, i.e., write a history of Mechanical Engineering. Jens agreed that Wally should begin this effort. Upon learning of this, Dave Pehrson, Deputy Associate Director for Engineering, suggested that the History be expanded to include Electronics Engineering and that it be called A History of Engineering. Dave asked me to join Wally on this effort and, unfortunately, Wally died shortly after I started. In the first part of this History, I have attempted to capture the important contributions that Engineering has made to the Programs, since Engineering's primary mission is to provide ''support to the Laboratory Programs.'' In the later parts you will find views discussing the development and application of Engineering's technology base. While Engineering's direct programmatic support had first priority, Engineering had other responsibilities as well. Some of these were to hire and train a competent technical and leadership staff, to anticipate and develop engineering technologies for future use by the Programs, to provide support to institutional activities, to be the vehicle for internal technology transfer, to provide for the movement of personnel between Programs, to groom individuals to assume programmatic and institutional leadership positions, and to develop, operate, and maintain facilities. Engineering developed the reputation as ''the flywheel of the Laboratory.'' It was also known as willing to provide people for tasks broader than just primarily technical roles, such as membership on salary review committees, and members and chairs of the student policy committees and safety groups. This History is not a compilation of facts only but a reflection by many individuals of what they viewed as important contributions during their careers at the Laboratory. I thank them all for taking the time to write their inputs to this document. Finally, I want to acknowledge all the former and current members of Engineering: engineers, associates, coordinators, drafters and designers, technicians, administrators and clerical, who in their own way made Engineering what it is. For after all is said and done, Engineering's primary assets were and are its people.

Lafranchi, E

2002-04-18T23:59:59.000Z

426

Reflection in membership equational logic, many-sorted equational logic, Horn logic with equality, and rewriting logic  

Science Conference Proceedings (OSTI)

We show that the generalized variant of formal systems where the underlying equational specifications are membership equational theories, and where the rules are conditional and can have equations, memberships and rewrites in the conditions is reflective. ... Keywords: Maude, Membership equational logic, Reflection, Reflective logics, Reflective programming languages, Rewriting logic, Universal theories

Manuel Clavel; José Meseguer; Miguel Palomino

2007-03-01T23:59:59.000Z

427

Remote-sensing reflectance determinations in the coastal ocean environment: impact of  

E-Print Network (OSTI)

Remote-sensing reflectance determinations in the coastal ocean environment: impact of instrumental the potential impact of instrumental characteristics and environmental variability on shipboard remote-sensing above the sea surface by 8­18%, and remote-sensing reflectance by 12­24%. Variations in radio- metric

Siegel, David A.

428

Using Van Manen's model to assess levels of reflectivity among preservice physical education teachers  

E-Print Network (OSTI)

The intent of this study was two-fold. The first purpose was to apply Van Manen's model to specific strategies (i.e., written assignments) and supervisory practices (i.e., interviews) to examine levels of reflectivity demonstrated and if there were any changes in the reflectivity of student teachers throughout a student teaching period. The second purpose was to assess the applicability of Van Manen's model to a preservice physical education setting. Five physical education majors enrolled in a student teaching experience volunteered to participate. Five weekly web-based written assignments were selected and analyzed using Van Manen's model of reflection. In addition, two interviews were audiotaped, transcribed, and subjected to thematic analysis techniques. Using Naturalistic Inquiry as a method of analysis suggests that utilizing supervisory approaches, written assignments, and reflective teaching can foster important changes in reflectivity levels which encourage reflective thinking in physical education student teachers. Increased levels of sophistication among the participants as the semester progressed were noted and may be attributed to a developmental effect similar to Fuller's Concerns Theory. The results also support Pultorak's (1993) assertion that students can increase reflective thinking when fostered and encouraged in preservice programs. This study combines available resources (i.e., technology, supervisors) with Van Manen's model to assess reflectivity levels in a physical education setting. Findings indicate that Van Manen's model can be used objectively in a physical education setting and can be utilized in applying a quantitative measure to qualitative responses.

Ballard, Kristy Kay

2006-08-01T23:59:59.000Z

429

Appearance Measurements in Industry and their Application in Light Reflection Models  

E-Print Network (OSTI)

chosen to sim- ulate the paint appearance thanks to textures on GPU. Keywords: color, optics, reflection.1 Goniochromatic Paints The color of an opaque dielectric is typically mod- eled with Lambertian reflectance are produced by combining metallic platelets with colored particles. In a dry paint the platelets are oriented

Durikovic, Roman

430

"We've bin watching you": designing for reflection and social persuasion to promote sustainable lifestyles  

Science Conference Proceedings (OSTI)

BinCam is a social persuasive system to motivate reflection and behavioral change in the food waste and recycling habits of young adults. The system replaces an existing kitchen refuse bin and automatically logs disposed of items through digital images ... Keywords: behavioral change, persuasive, reflection, social networks, social persuasion, sustainable HCI, technology

Anja Thieme; Rob Comber; Julia Miebach; Jack Weeden; Nicole Kraemer; Shaun Lawson; Patrick Olivier

2012-05-01T23:59:59.000Z

431

GOES Climatology and Analysis of Thunderstorms with Enhanced 3.9-?m Reflectivity  

Science Conference Proceedings (OSTI)

By combining observations from the Geostationary Operational Environmental Satellite (GOES) 3.9- and 10.7-?m channels, the reflected component of the 3.9-?m radiance can be isolated. In this paper, these 3.9-?m reflectivity measurements of ...

Daniel T. Lindsey; Donald W. Hillger; Louie Grasso; John A. Knaff; John F. Dostalek

2006-09-01T23:59:59.000Z

432

Blending real and virtual worlds using self-reflection and fiducials  

Science Conference Proceedings (OSTI)

This paper presents an enhanced version of a portable out-of-the-box platform for semi-immersive interactive applications. The enhanced version combines stereoscopic visualization, marker-less user tracking, and multi-touch with self-reflection of users ... Keywords: fiducials, fish tank virtual reality, interactive virtual art, mixed reality, multi-touch, self-reflection

Martin Fischbach; Dennis Wiebusch; Marc Erich Latoschik; Gerd Bruder; Frank Steinicke

2012-09-01T23:59:59.000Z

433

Focusing of weak shock waves and the von Neumann paradox of oblique shock reflection  

E-Print Network (OSTI)

Focusing of weak shock waves and the von Neumann paradox of oblique shock reflection Esteban G of weak shock waves at small angles are considered: the focusing of curved fronts at a&es, the transition between regular and irregular reflection of oblique shock waves on rigid walls and the diffraction

Tabak, Esteban G.

434

Coaxial Line Reflection Model for Dielectric Measurements of Oil Shale as Functions of Frequency  

Science Conference Proceedings (OSTI)

The simulation model and equivalent circuit of coaxial line for dielectric measurements are described. The calculation of coaxial line reflection method, the expression of dielectric constant part and the imaginary part of the relative complex permittivity ... Keywords: coaxial line, dielectric, reflection coefficient, complex permittivity, resonance

Yu Qun; Zhang Shuang; Guo Xin

2012-08-01T23:59:59.000Z

435

V-142: Oracle Java Reflection API Flaw Lets Remote Users Execute Arbitrary  

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

2: Oracle Java Reflection API Flaw Lets Remote Users Execute 2: Oracle Java Reflection API Flaw Lets Remote Users Execute Arbitrary Code V-142: Oracle Java Reflection API Flaw Lets Remote Users Execute Arbitrary Code April 25, 2013 - 12:14am Addthis PROBLEM: Oracle Java Reflection API Flaw Lets Remote Users Execute Arbitrary Code PLATFORM: Version(s): 7 Update 21; possibly other versions (1.7.0_21-b11) Java Server JRE is also affected. ABSTRACT: A vulnerability was reported in Oracle Java. REFERENCE LINKS: SecurityTracker Alert ID: 1028466 Oracle IMPACT ASSESSMENT: Medium DISCUSSION: A remote user can create a specially crafted Java application that, when loaded and approved by the target user, will trigger a flaw in the Reflection API to bypass the security sandbox. IMPACT: A remote user can create a Java file that, when loaded by the target user,

436

Plasma waves reflection from a boundary with specular accommodative boundary conditions  

E-Print Network (OSTI)

In the present work the linearized problem of plasma wave reflection from a boundary of a half--space is solved analytically. Specular accommodative conditions of plasma wave reflection from plasma boundary are taken into consideration. Wave reflectance is found as function of the given parameters of the problem, and its dependence on the normal electron momentum accommodation coefficient is shown by the authors. The case of resonance when the frequency of self-consistent electric field oscillations is close to the proper (Langmuir) plasma oscillations frequency, namely, the case of long wave limit is analyzed. Refs. 17. Figs. 6.

N. V. Gritsienko; A. V. Latyshev; A. A. Yushkanov

2010-01-06T23:59:59.000Z

437

Durable silver mirror with ultra-violet thru far infra-red reflection  

DOE Patents (OSTI)

A durable highly reflective silver mirror characterized by high reflectance in a broad spectral range of about 300 nm in the UV to the far infrared (.about.10000 nm), as well as exceptional environmental durability. A high absorptivity metal underlayer is used which prevents the formation of a galvanic cell with a silver layer while increasing the reflectance of the silver layer. Environmentally durable overcoat layers are provided to enhance mechanical and chemical durability and protect the silver layer from corrosion and tarnishing, for use in a wide variety of surroundings or climates, including harsh or extreme environments.

Wolfe, Jesse D. (Discovery Bay, CA)

2010-11-23T23:59:59.000Z

438

Reflection Survey At Dixie Valley Geothermal Field Area (Blackwell, Et Al.,  

Open Energy Info (EERE)

9) 9) Exploration Activity Details Location Dixie Valley Geothermal Field Area Exploration Technique Reflection Survey Activity Date Usefulness could be useful with more improvements DOE-funding Unknown Notes "The seismic reflection profiles of the range front structures are difficult to interpret because of he steep dips and 3-d fault zone geometry, in the-classical paper by Okaya and Thompson (1985) the range-bounding fault is not imaged as they proposed. The reflection seismic studies are the most useful of the geophysical techniques also the most expensive. The reflection data are two-dimensional making structural interpretation complicated for the three-dimensional geometry of the basin so that the other structural studied have been critical in correctly interpreting the seismic profiles. There are many

439

Reflection Survey At Hot Sulphur Springs Area (Laney, 2005) | Open Energy  

Open Energy Info (EERE)

Reflection Survey At Hot Sulphur Springs Area (Laney, 2005) Reflection Survey At Hot Sulphur Springs Area (Laney, 2005) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Reflection Survey At Hot Sulphur Springs Area (Laney, 2005) Exploration Activity Details Location Hot Sulphur Springs Area Exploration Technique Reflection Survey Activity Date Usefulness useful DOE-funding Unknown Notes Seismic Imaging, Majer, Gritto and Daley. The project objective includes the development and application of active seismic methods for improved understanding of the subsurface structure, faults, fractures lithology, and fluid paths in geothermal reservoirs. While the objective of the work previous to FY2003 was concerned with the detection and location of faults and fractures based on an existing 3-D seismic data set collected at the

440

Assimilation of Reflectivity Data in a Convective-Scale, Cycled 3DVAR Framework with Hydrometeor Classification  

Science Conference Proceedings (OSTI)

The impact of assimilating radar reflectivity and radial velocity data with an intermittent, cycled three-dimensional variational assimilation (3DVAR) system is explored using an idealized thunderstorm case and a real data case on 8 May 2003. A ...

Jidong Gao; David J. Stensrud

2012-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "reflection radiometer aster" 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

Hemispherical Reflectance Variations of Vegetation Canopies and Implications for Global and Regional Energy Budget Studies  

Science Conference Proceedings (OSTI)

The variations of spectral hemispherical reflectance (albedo) in vegetation canopies were studied as a function of solar zenith angle, leaf area index, led orientation distribution, and leaf and soil optical, properties. A three dimensional ...

D. S. Kimes; P. J. Sellers; W. W. Newcomb

1987-08-01T23:59:59.000Z

442

Inverse Transformation Optics and Reflection Analysis for Two-Dimensional Finite Embedded Coordinate Transformation  

E-Print Network (OSTI)

Inverse transformation optics is introduced, and used to calculate the boundary reflection of a two-dimensional (2D) finite embedded coordinate transformation which is discontinuous at the boundary. For an electromagnetic excitation of particular polarization, many pairs of original medium (in a virtual space) and transformation function can give exactly the same anisotropic medium through a conventional procedure of transformation optics. Non-uniqueness of these pairs is then exploited for the analysis and calculation of the boundary reflection. The reflection at the boundary of the anisotropic transformation medium (associated with vacuum in the virtual space) is converted to the simple reflection between two isotropic media in a virtual space by a new transformation continuous at the boundary. A necessary condition for reflectionless boundary of finite embedded coordinate transformation is found as a special case. The theory is verified numerically with the finite element method.

Zhang, Pu; He, Sailing

2009-01-01T23:59:59.000Z

443

Advances in Measuring Solar Reflectance-or, Why That Roof isn't as Cool  

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

Advances in Measuring Solar Reflectance-or, Why That Roof isn't as Cool Advances in Measuring Solar Reflectance-or, Why That Roof isn't as Cool as You Thought it Was Speaker(s): Ronnen Levinson Date: June 30, 2009 - 12:00pm Location: LBNL Bldg. 66 Auditorium Solar reflectance is often used to estimate the solar heat gain and rate the "coolness" of roofs and pavements. A solar reflectance property measured by two popular ASTM standard test methods (E903, C1549) can underestimate the peak solar heat gain of a spectrally selective "cool colored" surface by nearly 100 W m-2 because it assumes that sunlight contains an unrealistically high fraction of near-infrared (invisible) energy. Its use in building energy simulations can overestimate cool-roof annual energy savings by more than 20%. I define a new and simple solar

444

Coincident P and Sh reflections from basement rocks at Coso geothermal  

Open Energy Info (EERE)

Coincident P and Sh reflections from basement rocks at Coso geothermal Coincident P and Sh reflections from basement rocks at Coso geothermal field Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Coincident P and Sh reflections from basement rocks at Coso geothermal field Details Activities (2) Areas (1) Regions (0) Abstract: In mid-1989 the authors designed and collected four seismic reflection/refraction profiles that addressed the crustal structure of the Coso geothermal field. The two main east-west and north-south profiles crossed at the southeasternmost base of Sugar Loaf Mountain. Both in-line and cross-line Vibroseis and explosion data were recorded on each of these approximately 12-mi lines. This was accomplished with the simultaneous operation of two 1024-channel sign bit recording systems while four

445

Reflection Survey At Lightning Dock Area (Cunniff & Bowers, 2005) | Open  

Open Energy Info (EERE)

Reflection Survey At Lightning Dock Area (Cunniff & Reflection Survey At Lightning Dock Area (Cunniff & Bowers, 2005) Exploration Activity Details Location Lightning Dock Area Exploration Technique Reflection Survey Activity Date Usefulness useful DOE-funding Unknown Notes After reviewing bids from six firms, LDG contracted with Bird Geophysical Services ("Bird") to conduct a test to determine if relatively small, spring-assisted, drop weights could be used to successfully acquire deep reflections. This test showed that the contractor could produce usable data to depths of more than 1,500 ms two-way travel time. (For a given velocity model, this two-way travel time is equivalent to several kilometers of depth penetration.) Subsequently, LDG used Bird's services to acquire new traverses totaling about 27.6 km (17.2 mi.) along roads leading through the

446

Reflecting the Revised PM 2.5 National Ambient Air Quality Standard in NEPA Evaluations  

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

This letter, from the Director of the Environmental Protection Agency's Office of Federal Activities, outlines EPA's position as to how the revised National Air Quality Standard should be reflected in NEPA evaluations of proposed actions.

447

Reflection of Barotropic Rossby Waves in Sheared Flow and Validity of the WKB Approximation  

Science Conference Proceedings (OSTI)

The authors discuss reflection of barotropic Rossby waves in an idealized framework with potential applications to tropical–extratropical and interhemispheric interactions. Meridional propagation of Rossby waves has often been studied using the ...

Samuel F. Potter; Thomas Spengler; Isaac M. Held

2013-07-01T23:59:59.000Z

448

Pearls of Wisdom : technology for intentional reflection and learning in constructionist cooperatives  

E-Print Network (OSTI)

At the core of the constructionist learning paradigm is the idea that people learn through design experiences. However, in most settings, learners rarely revisit their work to reflect on design and learning processes. The ...

Chapman, Robbin Nicole, 1958-

2006-01-01T23:59:59.000Z

449

A Comparison of Radar Reflectivity Estimates of Rainfall from Collocated Radars  

Science Conference Proceedings (OSTI)

Radar reflectivity–based rainfall estimates from collocated radars are examined. The usual large storm-to-storm variations in radar bias and high correlation between radar estimates and rain gauge observations are found. For three storms in ...

Edward A. Brandes; J. Vivekanandan; James W. Wilson

1999-09-01T23:59:59.000Z

450

Climatologically Tuned Reflectivity-Rain Rate Relations and Links to Area-Time Integrals  

Science Conference Proceedings (OSTI)

Relations between either the point- or beam-averaged effective reflectivity, Ze, and surface rain rate, R, are determined by a probability matching method similar to that of Calheiros and Zawadzki, and Rosenfeld. The cumulative density functions (...

David Atlas; Daniel Rosenfeld; David B. Wolff

1990-11-01T23:59:59.000Z

451

Three Methods to Determine Profiles of Reflectivity from Volumetric Radar Data to Correct Precipitation Estimates  

Science Conference Proceedings (OSTI)

The vertical variability of radar reflectivity reduces the reliability of precipitation estimation by radar, especially in complex orography. This important source of error can, at least partially, be corrected for, if the vertical profile of ...

Bertrand Vignal; Gianmario Galli; Jürg Joss; Urs Germann

2000-10-01T23:59:59.000Z

452

Spectral reflectance of the seagrasses: Thalassia testudinum, Halodule wrightii, Syringodium filiforme and five marine algae  

Science Conference Proceedings (OSTI)

Spectral reflectance of three Western Atlantic subtropical/tropical dominant benthic seagrasses (Thalassia testudinum, Halodule wrightii and Syringodium filiforme) measured in the laboratory by UNIspec Spectral Analysis system over 400-1000 nm are ...

A. Thorhaug; A. D. Richardson; G. P. Berlyn

2007-03-01T23:59:59.000Z

453

Reflection of Nonlinear Baroclinic Rossby Waves and the Driving of Secondary Mean Flows  

Science Conference Proceedings (OSTI)

The reflection of weakly nonlinear Rossby waves (RWs) from a vertical wall is examined analytically through perturbation methods, with the ?-Rossby number (?) as the small parameter. A uniformly valid solution up to O(?3) is constructed using ...

Federico Graef; Lorenz Magaard

1994-09-01T23:59:59.000Z

454

Evolution of Quasi-Two-Dimensional Squall Lines. Part I: Kinematic and Reflectivity Structure  

Science Conference Proceedings (OSTI)

Doppler radar observations that establish common patterns in the evolution of the reflectivity and flow structures of squall lines are described. A number of squall lines have been analyzed with unprecedented time resolution in order to identity ...

Erik N. Rasmussen; Steven A. Rutledge

1993-08-01T23:59:59.000Z

455

Radar Reflectivity–Derived Thunderstorm Parameters Applied to Storm Longevity Forecasting  

Science Conference Proceedings (OSTI)

In order for the Federal Aviation Administration (FAA) to use airspace more efficiently during thunderstorm events, accurate storm longevity forecasts are needed. Relationships between 16 radar reflectivity–derived storm characteristics and storm ...

P. L. MacKeen; H. E. Brooks; K. L. Elmore

1999-04-01T23:59:59.000Z

456

Comparison of Daily Averaged Reflection, Transmission, and Absorption for Selected Radiative Flux Transfer Approximations  

Science Conference Proceedings (OSTI)

This paper compares accuracy for the daily averaged reflection, transmission, and absorption of solar flux derived from the delta-four-stream approximation and a few selected two-stream approximations. In the chosen variety of two-stream ...

Xun Zhu; Albert Arking

1994-12-01T23:59:59.000Z

457

Star-covering properties: generalized $\\Psi$-spaces, countability conditions, reflection  

E-Print Network (OSTI)

We investigate star-covering properties of $\\Psi$-like spaces. We show star-Lindel\\"ofness is reflected by open perfect mappings. In addition, we offer a new equivalence of CH.

Aiken, L P

2011-01-01T23:59:59.000Z

458

Light Reflection from Water Waves: Suitable Setup for a Polarimetric Investigation under Controlled Laboratory Conditions  

Science Conference Proceedings (OSTI)

The reflection of sunlight from a wavy water surface, often referred to as sun glint, is a well-known phenomenon that presents challenges but also hitherto untapped opportunities in remote sensing based on satellite imagery. Despite being ...

Matteo Ottaviani; Knut Stamnes; Jeff Koskulics; Hans Eide; Steven R. Long; Wenying Su; Warren Wiscombe

2008-05-01T23:59:59.000Z

459

The Reflection of a Stationary Gravity Wave by a Viscous Boundary Layer  

Science Conference Proceedings (OSTI)

The backward reflection of a stationary gravity wave (GW) propagating toward the ground is examined in the linear viscous case and for large Reynolds numbers (Re). In this case, the stationary GW presents a critical level at the ground because ...

François Lott

2007-09-01T23:59:59.000Z

460

Radar Reflectivity-Ice Water Content Relationships for Use above the Melting Level in Hurricanes  

Science Conference Proceedings (OSTI)

Regression equations linking radar reflectivity (Ze) and ice water content (IWC) were calculated from airborne radar and particle image data that were collected above the melting level in two hurricanes. The Ze ? IWC equation from the stratiform ...

Robert A. Black

1990-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "reflection radiometer aster" 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

Rainfall Parameter Estimation from Dual-Radar Measurements Combining Reflectivity Profile and Path-integrated Attenuation  

Science Conference Proceedings (OSTI)

Rain rate estimation properties of multiparameter radar measurements combining radar reflectivity and microwave attenuations are studied through simulations using a two-year disdrometer dataset. In the first simulation, properties of “complete” ...

Toshiaki Kozu; Kenji Nakamura

1991-04-01T23:59:59.000Z

462

Reflectivity, Ice Scattering, and Lightning Characteristics of Hurricane Eyewalls and Rainbands. Part I: Quantitative Description  

Science Conference Proceedings (OSTI)

Covering December 1997 through December 1998, 261 overpasses of 45 hurricanes by the Tropical Rainfall Measuring Mission (TRMM) satellite are used to document the observed radar reflectivity values, passive microwave ice scattering magnitudes, ...

Daniel J. Cecil; Edward J. Zipser; Stephen W. Nesbitt

2002-04-01T23:59:59.000Z

463

A Field Study of Reflectivity and Z–R Relations Using Vertically Pointing Radars and Disdrometers  

Science Conference Proceedings (OSTI)

Observations from a 16-month field study using two vertically pointing radars and a disdrometer at Wallops Island are analyzed to examine the consistency of the multi-instrument observations with respect to reflectivity and Z–R relations. The ...

Ali Tokay; Peter Hartmann; Alessandro Battaglia; Kenneth S. Gage; Wallace L. Clark; Christopher R. Williams

2009-06-01T23:59:59.000Z

464

A Spatial Analysis of Radar Reflectivity Regions within Hurricane Charley (2004)  

Science Conference Proceedings (OSTI)

Regions of 35-dBZ radar reflectivity returns are examined within a landfalling hurricane to determine whether these regions are composed of stratiform, convective, or transition-type precipitation. After calculating spatial attributes of the ...

Corene J. Matyas

2009-01-01T23:59:59.000Z

465

Wine-grape production trends reflect evolving consumer demand over 30 years  

E-Print Network (OSTI)

t Wine-grape production trends reflect evolving consumerregions. We examine the major trends in the California wine-Wine Institute 2007). This trend was kick-started in large

Volpe, Richard J. III; Green, Richard; Heien, Dale; Howitt, Richard

2010-01-01T23:59:59.000Z

466

Deriving resource efficient designs using the REFLECT aspect-oriented approach  

Science Conference Proceedings (OSTI)

In the context of the REFLECT project[1] we have developed an aspect-oriented compilation and synthesis toolchain that aims at facilitating the mapping of applications described in high-level imperative programming languages, such as C, to heterogeneous ...

José G. F. Coutinho; João M. P. Cardoso; Tiago Carvalho; Ricardo Nobre; Sujit Bhattacharya; Pedro C. Diniz; Liam Fitzpatrick; Razvan Nane

2013-03-01T23:59:59.000Z

467

Reflectivity, Rain Rate, and Kinetic Energy Flux Relationships Based on Raindrop Spectra  

Science Conference Proceedings (OSTI)

The relationships between radar reflectivity factor Z, rainfall rate R, and rainfall kinetic energy flux E were analyzed based on a multiyear raindrop spectra dataset recorded by a Joss–Waldvogel disdrometer in the Goodwin Creek research ...

Matthias Steiner; James A. Smith

2000-11-01T23:59:59.000Z

468

Non-invasive detection of oral cancer using reflectance and fluorescence spectroscopy  

E-Print Network (OSTI)

In vivo reflectance and fluorescence spectra were collected from patients with oral lesions, as well as healthy volunteers, in order to evaluate the potential of spectroscopy to serve as a non-invasive tool for the detection ...

McGee, Sasha Alanda

2008-01-01T23:59:59.000Z

469

Hail Detection Using S- and C-Band Radar Reflectivity Difference  

Science Conference Proceedings (OSTI)

In reflectivity fields observed with conventional radar networks, hailstorm identification is not easy. In the present paper, a hailstorm detection method using two single-wavelength radars located far from each other is discussed. The two radars,...

Laurent Féral; Henri Sauvageot; Serge Soula

2003-02-01T23:59:59.000Z

470

A Variational Scheme for Retrieving Rainfall Rate and Hail Reflectivity Fraction from Polarization Radar  

Science Conference Proceedings (OSTI)

Polarization radar offers the promise of much more accurate rainfall-rate R estimates than are possible from radar reflectivity factor Z alone, not only by better characterization of the drop size distribution, but also by more reliable ...

Robin J. Hogan

2007-10-01T23:59:59.000Z

471

The Unit Symbol for the Logarithmic Scale of Radar Reflectivity Factors  

Science Conference Proceedings (OSTI)

This note argues that the proper symbol for the logarithmic unit of radar reflectivity factor is dBz. The basis for this contention lies in both customary engineering practice and the international standard for unit symbols.

Paul L. Smith

2010-03-01T23:59:59.000Z

472

Monitoring the Reflectivity Calibration of a Scanning Radar Using a Profiling Radar and a Disdrometer  

Science Conference Proceedings (OSTI)

This paper describes a method of absolutely calibrating and routinely monitoring the reflectivity calibration from a scanning weather radar using a vertically profiling radar that has been absolutely calibrated using a collocated surface ...

Christopher R. Williams; Kenneth S. Gage; Wallace Clark; Paul Kucera

2005-07-01T23:59:59.000Z

473

Variograms of Radar Reflectivity to Describe the Spatial Continuity of Alpine Precipitation  

Science Conference Proceedings (OSTI)

The authors use variograms of radar reflectivity as a summary statistic to describe the spatial continuity of Alpine precipitation on mesogamma scales. First, how to obtain such variograms is discussed. Second, a set of typical variograms of ...

Urs Germann; Jürg Joss

2001-06-01T23:59:59.000Z

474

Observed Enhancement of Reflectivity and the Electric Field in Long-Lived Florida Anvils  

Science Conference Proceedings (OSTI)

A study of two long-lived Florida anvils showed that reflectivity >20 dBZ increased in area, thickness, and sometimes magnitude at the midlevel well downstream of the convective cores. In these same regions electric fields maintained strengths >...

James E. Dye; John C. Willett

2007-10-01T23:59:59.000Z

475

The Use of Cloud Reflectance Functions with Satellite Data for Surface Radiation Budget Estimation  

Science Conference Proceedings (OSTI)

The bidirectional reflectance distribution function (BRDF) of an overcast atmosphere above an ocean surface has been calculated as a function of wavelength using a discrete-ordinates radiative transfer model. This plane-parallel BRDF appears ...

Dan Lubin; Paul G. Weber

1995-06-01T23:59:59.000Z

476

Bidirectional Reflectance Round-Robin in Support of the Earth Observing System Program  

Science Conference Proceedings (OSTI)

Laboratory measurements of the bidirectional reflectance distribution function (BRDF) of diffuse reflectors are required to support calibration in the Earth Observing System (EOS) program of the National Aeronautics and Space Administration. To ...

E. A. Early; P. Y. Barnes; B. C. Johnson; J. J. Butler; C. J. Bruegge; S. F. Biggar; P. R. Spyak; M. M. Pavlov

2000-08-01T23:59:59.000Z

477

A system for optimizing interior daylight distribution using reflective Venetian blinds with independent blind angle control  

E-Print Network (OSTI)

An operational algorithm for blind angle control is developed to optimize the daylighting performance of a system of reflective Venetian blinds. Numerical modeling and experiment confirm that independent control of alternating ...

McGuire, Molly E

2005-01-01T23:59:59.000Z

478

Systematic Variation of Observed Radar Reflectivity–Rainfall Rate Relations in the Tropics  

Science Conference Proceedings (OSTI)

The Tropical Rainfall Measuring Mission Global Validation Program provides a unique opportunity to compare radar datasets from different sites, because they are analyzed in a relatively uniform procedure. Monthly observed radar reflectivity–...

Eyal Amitai

2000-12-01T23:59:59.000Z

479

MODIS Reflectance and Active Fire Data for Burn Mapping in Colombia  

Science Conference Proceedings (OSTI)

Satellite-based strategies for burned area mapping may rely on two types of remotely sensed data: postfire reflectance images and active fire detection. This study uses both methods in a synergistic way. In particular, burned area mapping is ...

Silvia Merino-de-Miguel; Federico González-Alonso; Margarita Huesca; Dolors Armenteras; Carol Franco

2011-02-01T23:59:59.000Z

480

Application of the Lognormal Raindrop Distribution to Differential Reflectivity Radar Measurement (ZDR)  

Science Conference Proceedings (OSTI)

Use of the lognormal form of raindrop size distributions in simulations of differential reflectivity (ZDR) measurements is investigated. Using two remotely measured variables and an empirical relation, the three parameters of the lognormal ...

Graham Feingold; Zev Levin

1987-09-01T23:59:59.000Z

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


481

The Effect of Reflecting Surfaces on the Vertical Structure and Variability of Stratospheric Planetary Waves  

Science Conference Proceedings (OSTI)

The effects of an upper-stratospheric reflecting surface on the vertical structure of stratospheric planetary waves are considered. A diagnostic of the basic-state wave propagation characteristics, which is particularly useful for determining the ...

Nili Harnik; Richard S. Lindzen

2001-10-01T23:59:59.000Z

482

Estimation of Cloud Physical Parameters from Airborne Solar Spectral Reflectance Measurements for Stratocumulus Clouds  

Science Conference Proceedings (OSTI)

A new method is proposed to retrieve various cloud physical parameters of water clouds from the solar-flux reflectances at four wavelengths measured by using the airborne Multi-channel Cloud Pyranometer (MCP) system. The MCP system was designed ...

Shoji Asano; Masataka Shiobara; Akihiro Uchiyama

1995-10-01T23:59:59.000Z

483

Correction of Polarimetric Radar Reflectivity Measurements and Rainfall Estimates for Apparent Vertical Profile in Stratiform Rain  

Science Conference Proceedings (OSTI)

A method for correcting the vertical profile of reflectivity measurements and rainfall estimates (VPR) in plan position indicator (PPI) scans of polarimetric weather radars in the melting layer and the snow layer during stratiform rain is ...

John Kalogiros; Marios N. Anagnostou; Emmanouil N. Anagnostou; Mario Montopoli; Errico Picciotti; Frank S. Marzano

2013-05-01T23:59:59.000Z

484

A Summary of Reflectivity Profiles from the First Year of TRMM Radar Data  

Science Conference Proceedings (OSTI)

A preliminary climatology of reflectivity profiles derived from the first spaceborne precipitation radar (PR), which is on board the Tropical Rainfall Measuring Mission (TRMM) satellite, is described using the data from January 1998 to February ...

Dong-Bin Shin; Gerald R. North; Kenneth P. Bowman

2000-12-01T23:59:59.000Z

485

Multilayer deposition and EUV reflectance characterization of 131 ? flight mirrors for AIA at LLNL  

Science Conference Proceedings (OSTI)

Mo/Si multilayer coatings reflecting at 131 {angstrom} were deposited successfully on the AIA primary and secondary flight mirrors and on two coating witness Si wafers, on November 16, 2005, at LLNL. All coatings were characterized by means of EUV reflectance measurements at beamline 6.3.2 of the Advanced Light Source (ALS) synchrotron at LBNL, and were found to be well within specifications.

Soufli, R; Robinson, J C; Spiller, E; Baker, S L; Dollar, F J; Gullikson, E M

2006-02-22T23:59:59.000Z

486

Optical Reflection Spectroscopy of Thick Corrosion Layers on 304 Stainless Steel  

DOE Green Energy (OSTI)

Corrosion resistant structural materials of both iron and nickel based alloys are used in the electric power industry for the construction of the coolant loops of both conventional and nuclear power generating stations. These materials, in the presence of high temperature (e.g. 287 C), high pH (e.g. 10.0 {at} 20 C) water with dissolved hydrogen will oxidize and form corrosion films that are double metal oxides (or spinels) of the form AB{sub 2}O{sub 4}. This work describes optical reflectivity techniques that have been developed to study the growth of these films in situ. The optical technique uses a dual-beam specular reflection spectrometer to measure the spectrum of reflected light in small angle (i.e. < 15{sup o}) scatter. The reflection spectra are then calibrated using a set of corrosion coupons with corrosion films that are well known. Results are compared with models based on multilayer reflection and Mie scattering from a particle size distribution. Surface roughness is found to be the dominant cause of reduced reflection as the films grow.

R Castelli; P Persans; W Strohmayer; V Parkinson

2006-03-23T23:59:59.000Z

487

Absolute Calibration of Radar Reflectivity Using Redundancy of the Polarization Observations and Implied Constraints on Drop Shapes  

Science Conference Proceedings (OSTI)

A major limitation of improved radar-based rainfall estimation is accurate calibration of radar reflectivity. In this paper, the authors fully automate a polarimetric method that uses the consistency between radar reflectivity, differential ...

Jonathan J. Gourley; Anthony J. Illingworth; Pierre Tabary

2009-04-01T23:59:59.000Z

488

The Vertical Profile of Radar Reflectivity of Convective Cells: A Strong Indicator of Storm Intensity and Lightning Probability?  

Science Conference Proceedings (OSTI)

Reflectivity data from Doppler radars are used to construct vertical profiles of radar reflectivity (VPRR) of convective cells in mesoscale convective systems (MCSS) in three different environmental regimes. The National Center for Atmospheric ...

Edward J. Zipser; Kurt R. Lutz

1994-08-01T23:59:59.000Z

489

Reflectivity Measurements for Copper and Aluminumin the Far Infrared and the Resistive Wall Impedance in the LCLS Undulator  

E-Print Network (OSTI)

Reflectivity Measurements for Copper and Aluminumin the Far Infrared and the Resistive Wall Impedance in the LCLS Undulator

Bane, K L F; Tu, J J

2006-01-01T23:59:59.000Z

490

Imaging the Material Properties of Bone Specimens Using Reflection-Based Infrared Microspectroscopy  

Science Conference Proceedings (OSTI)

Fourier transform infrared microspectroscopy (FTIRM) is a widely used method for mapping the material properties of bone and other mineralized tissues, including mineralization, crystallinity, carbonate substitution, and collagen cross-linking. This technique is traditionally performed in a transmission-based geometry, which requires the preparation of plastic-embedded thin sections, limiting its functionality. Here, we theoretically and empirically demonstrate the development of reflection-based FTIRM as an alternative to the widely adopted transmission-based FTIRM, which reduces specimen preparation time and broadens the range of specimens that can be imaged. In this study, mature mouse femurs were plastic-embedded and longitudinal sections were cut at a thickness of 4 {micro}m for transmission-based FTIRM measurements. The remaining bone blocks were polished for specular reflectance-based FTIRM measurements on regions immediately adjacent to the transmission sections. Kramers-Kronig analysis of the reflectance data yielded the dielectric response from which the absorption coefficients were directly determined. The reflectance-derived absorbance was validated empirically using the transmission spectra from the thin sections. The spectral assignments for mineralization, carbonate substitution, and collagen cross-linking were indistinguishable in transmission and reflection geometries, while the stoichiometric/nonstoichiometric apatite crystallinity parameter shifted from 1032/1021 cm{sup -1} in transmission-based to 1035/1025 cm{sup -1} in reflection-based data. This theoretical demonstration and empirical validation of reflection-based FTIRM eliminates the need for thin sections of bone and more readily facilitates direct correlations with other methods such as nanoindentation and quantitative backscatter electron imaging (qBSE) from the same specimen. It provides a unique framework for correlating bone's material and mechanical properties.

Acerbo A. S.; Carr, G.L.; Judex, S.; Miller, L.M.

2012-03-13T23:59:59.000Z

491

Modeling the effect of reflection from metallic walls on spectroscopic measurements  

SciTech Connect

A modification of JET is presently being prepared to bring operational experience with ITER-like first wall (Be) and divertor (W) materials, geometry and plasma parameters. Reflectivity measurements of JET sample tiles have been performed and the data are used within a simplified model of the JET and ITER vessels to predict additional contributions to quantitative spectroscopic measurements. The most general method to characterize reflectivity is the bidirectional reflection distribution function (BRDF). For extended sources however, such as bremsstrahlung and edge emission of fuel and intrinsic impurities, the results obtained in the modeling are almost as accurate if the total reflectivity with ideal Lambertian angular dependence is used. This is in contrast to the experience in other communities, such as optical design, lighting design, or rendering who deal mostly with pointlike light sources. This result is so far based on a very limited set of measurements and will be reassessed when more detailed BRDF measurements of JET tiles have been made. If it is true it offers the possibility of in situ monitoring of the reflectivity of selected parts of the wall during exposure to plasma operation, while remeasurement of the BRDF is performed during interventions. For a closed vessel structure such as ITER, it is important to consider multiple reflections. This makes it more important to represent the whole of the vessel reasonably accurately in the model, which on the other hand is easier to achieve than for the more complex internal structure of JET. In both cases the dominant contribution is from the first reflection, and a detailed model of the areas intersected by lines of sight of diagnostic interest is required.

Zastrow, K.-D. [Euratom/UKAEA Fusion Association, Culham Science Centre, Abingdon OX14 3DB (United Kingdom); Keatings, S. R.; O'Mullane, M. G. [Department of Physics, University of Strathclyde, Glasgow G1 1XQ (United Kingdom); Marot, L. [Department of Physics, University of Basel, 4056 Basel (Switzerland); Temmerman, G. de [Euratom/UKAEA Fusion Association, Culham Science Centre, Abingdon OX14 3DB (United Kingdom); Department of Physics, University of Basel, 4056 Basel (Switzerland)

2008-10-15T23:59:59.000Z

492

Measured energy savings from the application of reflective roofsin 2 small non-residential buildings  

SciTech Connect

Energy use and environmental parameters were monitored in two small (14.9 m{sup 2}) non-residential buildings during the summer of 2000. The buildings were initially monitored for about 1 1/2 months to establish a base condition. The roofs of the buildings were then painted with a white coating and the monitoring was continued. The original solar reflectivities of the roofs were about 26%; after the application of roof coatings the reflectivities increased to about 72%. The monitored electricity savings were about 0.5kWh per day (33 Wh/m2 per day). The estimated annual savings are about 125kWh per year (8.4 kWh/m2); at a cost of $0.1/kWh, savings are about $0.86/m2 per year. Obviously, it costs significantly more than this amount to coat the roofs with reflective coating, particularly because of the remote locations of these buildings. However, since the prefabricated roofs are already painted green at the factory, painting them a white (reflective) color would bring no additional cost. Hence, a reflective roof saves energy at no incremental cost.

Akbari, Hashem

2003-01-14T23:59:59.000Z

493

Measuring solar reflectance-Part I: Defining a metric that accurately  

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

solar reflectance-Part I: Defining a metric that accurately solar reflectance-Part I: Defining a metric that accurately predicts solar heat gain Title Measuring solar reflectance-Part I: Defining a metric that accurately predicts solar heat gain Publication Type Journal Article Year of Publication 2010 Authors Levinson, Ronnen M., Hashem Akbari, and Paul Berdahl Journal Solar Energy Volume 84 Pagination 1717-1744 Keywords Heat Island, Methods & Protocols Abstract Solar reflectance can vary with the spectral and angular distributions of incident sunlight, which in turn depend on surface orientation, solar position and atmospheric conditions. A widely used solar reflectance metric based on the ASTM Standard E891 beam-normal solar spectral irradiance underestimates the solar heat gain of a spectrally selective "cool colored" surface because this irradiance contains a greater fraction of near-infrared light than typically found in ordinary (unconcentrated) global sunlight. At mainland US latitudes, this metric RE891BN can underestimate the annual peak solar heat gain of a typical roof or pavement (slope 5:12 [23°]) by as much as 89 W m-2, and underestimate its peak surface temperature by up to 5 K. Using RE891BN to characterize roofs in a building energy simulation can exaggerate the economic value N of annual cool roof net energy savings by as much as 23%.

494

Effect of PCC Joint Skew on Reflective Cracking in HMA Overlays  

E-Print Network (OSTI)

Reflective cracking is a relatively premature distress that occurs in HMA materials overlaying cracked and jointed underlying pavements. The high concentration of stresses and strains in the vicinity of the discontinuity of the old pavement causes the cracks to reflect into the newly placed HMA overlay. While it is a common practice to use skewed transverse joints in rigid pavements to improve the latter's performance, the impact of such a practice on the cracking of a potential HMA overlay has not been examined so far. In this context, this study investigates the effect of using skewed transverse joints in rigid pavements on reflective cracking development in the HMA overlay. Advanced three-dimensional Finite Element models including viscoelastic material properties for the HMA overlay, 3D beam modeling of dowel bars, non-uniform tire-pavement contact stresses, friction interfaces, and infinite boundary elements were constructed for both normal and skewed transverse joints using ABAQUS v-6.11. The potential for reflective cracking was monitored through the fracture mechanics J-integral parameter. Results obtained show, among other things, that the practice of skewing transverse joints increases the potential for reflective cracking development in the asphalt concrete overlay.

Ziad G. Ghauch

2011-10-14T23:59:59.000Z

495

The optical constants and spectral specular reflectivity of highly oriented pyrolytic graphite (HOPG). Revision 1  

Science Conference Proceedings (OSTI)

Measurements of the specular reflectivity and the optical constants of highly ordered pyrolytic graphite (HOPG) have been made using two independent optical systems. The first measures reflectance (at 1.06 {mu}m and 293 K) by comparing the intensity of a laser beam before and after reflecting off the sample. The second determines the complex index of raft-action (from 0.55 to 8.45 {mu}m, with sample temperatures of 293, 480, 900 and 1300 K) by ellipsometry. Agreement between the two methods is good. Moderate reflectivities are observed over the full spectral range of measurement: the spectral directional-hemispherical reflectivity at normal incidence varies from 0.41 at 0.55 {mu}m to 0.74 at 8.45 {mu}m. The components of the complex index of refraction increase smoothly with wavelength. The index of refraction increases from 3.10 at 0.55 {mu}m to 7.84 at 8.45 {mu}m. The extinction coefficient varies from 2.01 to 6.66 over the same range.

Havstad, M.A.; Schildbach, M.A.; McLean, W. II

1993-08-01T23:59:59.000Z

496

Design of semiconductor heterostructures with preset electron reflectance by inverse scattering techniques  

E-Print Network (OSTI)

We present the application of the inverse scattering method to the design of semiconductor heterostructures having a preset dependence of the (conduction) electrons' reflectance on the energy. The electron dynamics are described by either the effective mass Schr\\"odinger, or by the (variable mass) BenDaniel and Duke equations. The problem of phase (re)construction for the complex transmission and reflection coefficients is solved by a combination of Pad\\'e approximant techniques, obtaining reference solutions with simple analytic properties. Reflectance-preserving transformations allow bound state and reflection resonance management. The inverse scattering problem for the Schroedinger equation is solved using an algebraic approach due to Sabatier. This solution can be mapped unitarily onto a family of BenDaniel and Duke type equations. The boundary value problem for the nonlinear equation which determines the mapping is discussed in some detail. The chemical concentration profile of heterostructures whose self consistent potential yields the desired reflectance is solved completely in the case of Schroedinger dynamics and approximately for Ben-Daniel and Duke dynamics. The Appendix contains a brief digest of results from scattering and inverse scattering theory for the one-dimensional Schroedinger equation which are used in the paper.

Daniel Bessis; G. Andrei Mezincescu

1999-03-31T23:59:59.000Z

497

Spectral Reflectance  

Science Conference Proceedings (OSTI)

... Manufacturing Engineering Laboratory Precision Engineering Automated Production Technology Intelligent ... in the center of a light-tight room with ...

2010-08-19T23:59:59.000Z

498

Oak Ridge Reflects on 30 Years of Cleanup | Department of Energy  

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

Reflects on 30 Years of Cleanup Reflects on 30 Years of Cleanup Oak Ridge Reflects on 30 Years of Cleanup May 30, 2013 - 12:00pm Addthis Oak Ridge Office (ORO) of EM Deputy Manager Sue Cange, left to right, former ORO Manager Jim Hall, former ORO Manager Joe LaGrone, former ORO Manager Gerald Boyd, EM Senior Advisor Dave Huizenga and ORO EM Manager Mark Whitney take the stage after the showing of “30 Years in 30 Minutes.” Oak Ridge Office (ORO) of EM Deputy Manager Sue Cange, left to right, former ORO Manager Jim Hall, former ORO Manager Joe LaGrone, former ORO Manager Gerald Boyd, EM Senior Advisor Dave Huizenga and ORO EM Manager Mark Whitney take the stage after the showing of "30 Years in 30 Minutes." Displays at the event provide timelines and accomplishments of Oak Ridge’s EM program.

499

GAO Report Reflects Success Story for EM Sites | Department of Energy  

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

GAO Report Reflects Success Story for EM Sites GAO Report Reflects Success Story for EM Sites GAO Report Reflects Success Story for EM Sites March 28, 2013 - 12:00pm Addthis Scrapers excavate the Crescent Junction disposal cell 25 feet below ground surface. Scrapers excavate the Crescent Junction disposal cell 25 feet below ground surface. In a report released earlier this year, the U.S. Government Accountability Office (GAO) said it recognized progress on EM projects of $750 million or less and was shifting the focus of EM's high-risk designation more to major contracts and projects greater than $750 million. This progress is evident at several EM sites. In 2009, workers completed significant infrastructure construction at EM's Moab site at a cost of about $39.3 million, under the estimated budget of $40.7 million, and within schedule.

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Observed Surface Reflectance Distributions in the Southern Great Plains During ALIVE  

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Surface Reflectance Distributions Surface Reflectance Distributions in the Southern Great Plains During ALIVE Kirk Knobelspiesse 1 , Brian Cairns 1 , Andrew Lacis 2 , Mikhail Alexandrov 2 , Barbara Carlson 2 and Beat Schmid 3 1 Department of Applied Physics and Applied Mathematics, Columbia University 2 NASA Goddard Institute for Space Studies 3 Pacific Northwest National Laboratory * Surface albedo can be measured from the ground with broadband instruments. * Albedo can be measured from space if the atmospheric effect is removed and many view geometries are available. The measured Bidirectional Reflectance Distribution Function (BRDF) is angularly integrated to compute the albedo. * Studies of the former (Yang, 2006) and the latter (Liang et al. 2005; Wang et al. 2006) do not always agree.