Sample records for received increased attention

  1. Local Attentional Bias Increases Approach Motivation: Evidence from Event-Related Potentials and Frequency Analyses

    E-Print Network [OSTI]

    Gable, Philip Arvis

    2011-08-08T23:59:59.000Z

    Harmon-Jones Committee Members, Kelly Haws Brandon Schmeichel Barry Setlow Head of Department, Les Morey May 2010 Major Subject: Psychology iii ABSTRACT Local Attentional Bias Increases Approach Motivation...: Evidence from Event-Related Potentials and Frequency Analyses. (May 2010) Philip Arvis Gable, B.A., Ouachita Baptist University; M.S., Texas A&M University Chair of Advisory Committee: Dr. Eddie Harmon-Jones Over twenty years of research have examined...

  2. RECEIVED

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah47,193.70COMMUNITYResponses:December 11, 2014 PageRDC ReceivesREAP40

  3. Aspect-oriented technology is a new programming paradigm that is receiving considerable attention from research and

    E-Print Network [OSTI]

    Alexander, Roger T.

    , to be little ongoing research into the costs and effects. At first glace, as with most new technologies, the benefits are promising. However, each new technology brings with it a set of costs. In this position paperABSTRACT Aspect-oriented technology is a new programming paradigm that is receiving considerable

  4. Positive affect increases the breadth of attentional selection G. Rowe, J. B. Hirsh, and A. K. Anderson

    E-Print Network [OSTI]

    Toronto, University of

    to broaden the scope of attentional filters, reducing their selectivity. The effect of positive mood states) sometimes is referred to as ``weapon focus,'' where attention is narrowed at the expense of encoding

  5. rapidly growing problem. It is garnering the same level of attention in re-search and the media that tobacco once received. Obesity is different be-

    E-Print Network [OSTI]

    Holsinger, Kent

    that tobacco once received. Obesity is different be- cause it is a disease covered by the Americans with Disabilities Act. There is a greater risk that injuries suffered by obese workers will create permanent to recommend the EAP to According to the Centers for Disease Control and Prevention, obesity is a January 2011

  6. INCREASE

    ScienceCinema (OSTI)

    None

    2013-07-22T23:59:59.000Z

    The Interdisciplinary Consortium for Research and Educational Access in Science and Engineering (INCREASE), assists minority-serving institutions in gaining access to world-class research facilities.

  7. Increasing Gas Prices: Good Economics, but Bad Public Relations Rising gasoline prices captured the attention of the press and politicians in recent months,

    E-Print Network [OSTI]

    Ahmad, Sajjad

    Increasing Gas Prices: Good Economics, but Bad Public Relations Rising gasoline prices captured interest during our current gasoline shortage. That is, a higher price rations the product to the best use for temporarily foregoing the state gasoline tax. Will that lower gas prices? No. Gas prices rose not because

  8. Radiation receiver

    DOE Patents [OSTI]

    Hunt, A.J.

    1983-09-13T23:59:59.000Z

    The apparatus for collecting radiant energy and converting same to alternate energy form includes a housing having an interior space and a radiation transparent window allowing, for example, solar radiation to be received in the interior space of the housing. Means are provided for passing a stream of fluid past said window and for injecting radiation absorbent particles in said fluid stream. The particles absorb the radiation and because of their very large surface area, quickly release the heat to the surrounding fluid stream. The fluid stream particle mixture is heated until the particles vaporize. The fluid stream is then allowed to expand in, for example, a gas turbine to produce mechanical energy. In an aspect of the present invention properly sized particles need not be vaporized prior to the entrance of the fluid stream into the turbine, as the particles will not damage the turbine blades. In yet another aspect of the invention, conventional fuel injectors are provided to inject fuel into the fluid stream to maintain the proper temperature and pressure of the fluid stream should the source of radiant energy be interrupted. In yet another aspect of the invention, an apparatus is provided which includes means for providing a hot fluid stream having hot particles disbursed therein which can radiate energy, means for providing a cooler fluid stream having cooler particles disbursed therein, which particles can absorb radiant energy and means for passing the hot fluid stream adjacent the cooler fluid stream to warm the cooler fluid and cooler particles by the radiation from the hot fluid and hot particles. 5 figs.

  9. Radiation receiver

    DOE Patents [OSTI]

    Hunt, Arlon J. (Oakland, CA)

    1983-01-01T23:59:59.000Z

    The apparatus for collecting radiant energy and converting same to alternate energy form includes a housing having an interior space and a radiation transparent window allowing, for example, solar radiation to be received in the interior space of the housing. Means are provided for passing a stream of fluid past said window and for injecting radiation absorbent particles in said fluid stream. The particles absorb the radiation and because of their very large surface area, quickly release the heat to the surrounding fluid stream. The fluid stream particle mixture is heated until the particles vaporize. The fluid stream is then allowed to expand in, for example, a gas turbine to produce mechanical energy. In an aspect of the present invention properly sized particles need not be vaporized prior to the entrance of the fluid stream into the turbine, as the particles will not damage the turbine blades. In yet another aspect of the invention, conventional fuel injectors are provided to inject fuel into the fluid stream to maintain the proper temperature and pressure of the fluid stream should the source of radiant energy be interrupted. In yet another aspect of the invention, an apparatus is provided which includes means for providing a hot fluid stream having hot particles disbursed therein which can radiate energy, means for providing a cooler fluid stream having cooler particles disbursed therein, which particles can absorb radiant energy and means for passing the hot fluid stream adjacent the cooler fluid stream to warm the cooler fluid and cooler particles by the radiation from the hot fluid and hot particles.

  10. Solar heat receiver

    DOE Patents [OSTI]

    Hunt, Arlon J. (Oakland, CA); Hansen, Leif J. (Berkeley, CA); Evans, David B. (Orinda, CA)

    1985-01-01T23:59:59.000Z

    A receiver for converting solar energy to heat a gas to temperatures from 700.degree.-900.degree. C. The receiver is formed to minimize impingement of radiation on the walls and to provide maximum heating at and near the entry of the gas exit. Also, the receiver is formed to provide controlled movement of the gas to be heated to minimize wall temperatures. The receiver is designed for use with gas containing fine heat absorbing particles, such as carbon particles.

  11. Solar heat receiver

    DOE Patents [OSTI]

    Hunt, A.J.; Hansen, L.J.; Evans, D.B.

    1982-09-29T23:59:59.000Z

    A receiver is described for converting solar energy to heat a gas to temperatures from 700 to 900/sup 0/C. The receiver is formed to minimize impingement of radiation on the walls and to provide maximum heating at and near the entry of the gas exit. Also, the receiver is formed to provide controlled movement of the gas to be heated to minimize wall temperatures. The receiver is designed for use with gas containing fine heat absorbing particles, such as carbon particles.

  12. attention: Topics by E-print Network

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

    sional field). Third, a subset Chatterjee, Anjan 37 Developmental attentional dyslexia 1 Developmental attentional dyslexia 2 Developmental attentional dyslexia CiteSeer...

  13. As the speed of the compressor was increased per test, any excess charge was held in the accumulator, which served as a receiver to maintain optimal charge level. Analytical results developed by Rice* indicated that the condenser exit

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    #12;As the speed of the compressor was increased per test, any excess charge was held in COP despite saturated conditions at the inlet to the compressor. Therefore, optimal airflow and refrigerant subcooling at the condenser exit were experimentally determined at discrete compressor speeds

  14. Data-fusion receiver

    DOE Patents [OSTI]

    Gabelmann, Jeffrey M.; Kattner, J. Stephen; Houston, Robert A.

    2006-12-19T23:59:59.000Z

    This invention is an ultra-low frequency electromagnetic telemetry receiver which fuses multiple input receive sources to synthesize a decodable message packet from a noise corrupted telemetry message string. Each block of telemetry data to be sent to the surface receiver from a borehole tool is digitally encoded into a data packet prior to transmission. The data packet is modulated onto the ULF EM carrier wave and transmitted from the borehole to the surface and then are simultaneously detected by multiple receive sensors disbursed within the rig environment. The receive sensors include, but are not limited to, electric field and magnetic field sensors. The spacing of the surface receive elements is such that noise generators are unequally coupled to each receive element due to proximity and/or noise generator type (i.e. electric or magnetic field generators). The receiver utilizes a suite of decision metrics to reconstruct the original, non noise-corrupted data packet from the observation matrix via the estimation of individual data frames. The receiver will continue this estimation process until: 1) the message validates, or 2) a preset "confidence threshold" is reached whereby frames within the observation matrix are no longer "trusted".

  15. Bullet trains and steam engines: Exogenous attention zips but endogenous attention chugs along

    E-Print Network [OSTI]

    VanRullen, Rufin

    Bullet trains and steam engines: Exogenous attention zips but endogenous attention chugs along: Chakravarthi, R., & VanRullen, R. (2011). Bullet trains and steam engines: Exogenous attention zips

  16. 1997 SPECIAL ISSUE A Neural Global Workspace Model for Conscious Attention

    E-Print Network [OSTI]

    Memphis, University of

    1997 SPECIAL ISSUE A Neural Global Workspace Model for Conscious Attention James Newman,1 Bernard J and 3 Department of Computer Science, Yonsei University (Received 9 July 1996; accepted 24 April 1997 neural network principles. 1997 Elsevier Science Ltd. Keywords--Attention, Binding, Consciousness, Global

  17. Received 8 Mar 2014 | Accepted 24 Jun 2014 | Published 5 Aug 2014 Conformable amplified lead zirconate titanate

    E-Print Network [OSTI]

    Rogers, John A.

    -emitting diodes, solar cells and transistors have received much attention, application requirements often demand on soft supports as well as engineering behaviours of the associated devices. Calibrated measurements

  18. Central solar energy receiver

    DOE Patents [OSTI]

    Drost, M. Kevin (Richland, WA)

    1983-01-01T23:59:59.000Z

    An improved tower-mounted central solar energy receiver for heating air drawn through the receiver by an induced draft fan. A number of vertically oriented, energy absorbing, fin-shaped slats are radially arranged in a number of concentric cylindrical arrays on top of the tower coaxially surrounding a pipe having air holes through which the fan draws air which is heated by the slats which receive the solar radiation from a heliostat field. A number of vertically oriented and wedge-shaped columns are radially arranged in a number of concentric cylindrical clusters surrounding the slat arrays. The columns have two mirror-reflecting sides to reflect radiation into the slat arrays and one energy absorbing side to reduce reradiation and reflection from the slat arrays.

  19. Multichannel homodyne receiver

    DOE Patents [OSTI]

    Landt, J.A.

    1981-01-19T23:59:59.000Z

    A homodyne radar transmitter/receiver device which produces a single combined output which contains modulated backscatter information for all phase conditions of both modulated and unmodulated backscatter signals is described. The device utilizes taps along coaxial transmission lines, strip transmission line, and waveguides which are spaced by 1/8 wavelength or 1/6 wavelength, etc. This greatly reduces costs by eliminating separate transmission and reception antennas and an expensive arrangement of power splitters and mixers utilized in the prior art.

  20. Multichannel homodyne receiver

    DOE Patents [OSTI]

    Landt, Jeremy A. (Los Alamos, NM)

    1982-01-01T23:59:59.000Z

    A homodyne radar transmitter/receiver device which produces a single combined output which contains modulated backscatter information for all phase conditions of both modulated and unmodulated backscatter signals. The device utilizes taps along coaxial transmission lines, strip transmission line, and waveguides which are spaced by 1/8 wavelength or 1/6 wavelength, etc. This greatly reduces costs by eliminating separate transmission and reception antennas and an expensive arrangement of power splitters and mixers utilized in the prior art.

  1. Ultra-wideband receiver

    DOE Patents [OSTI]

    McEwan, T.E.

    1994-09-06T23:59:59.000Z

    An ultra-wideband (UWB) receiver utilizes a strobed input line with a sampler connected to an amplifier. In a differential configuration, [+-] UWB inputs are connected to separate antennas or to two halves of a dipole antenna. The two input lines include samplers which are commonly strobed by a gating pulse with a very low duty cycle. In a single ended configuration, only a single strobed input line and sampler is utilized. The samplers integrate, or average, up to 10,000 pulses to achieve high sensitivity and good rejection of uncorrelated signals. 16 figs.

  2. Ultra-wideband receiver

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1996-01-01T23:59:59.000Z

    An ultra-wideband (UWB) receiver utilizes a strobed input line with a sampler connected to an amplifier. In a differential configuration, .+-.UWB inputs are connected to separate antennas or to two halves of a dipole antenna. The two input lines include samplers which are commonly strobed by a gating pulse with a very low duty cycle. In a single ended configuration, only a single strobed input line and sampler is utilized. The samplers integrate, or average, up to 10,000 pulses to achieve high sensitivity and good rejection of uncorrelated signals.

  3. Ultra-wideband receiver

    DOE Patents [OSTI]

    McEwan, T.E.

    1996-06-04T23:59:59.000Z

    An ultra-wideband (UWB) receiver utilizes a strobed input line with a sampler connected to an amplifier. In a differential configuration, {+-}UWB inputs are connected to separate antennas or to two halves of a dipole antenna. The two input lines include samplers which are commonly strobed by a gating pulse with a very low duty cycle. In a single ended configuration, only a single strobed input line and sampler is utilized. The samplers integrate, or average, up to 10,000 pulses to achieve high sensitivity and good rejection of uncorrelated signals. 21 figs.

  4. Ultra-wideband receiver

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1994-01-01T23:59:59.000Z

    An ultra-wideband (UWB) receiver utilizes a strobed input line with a sampler connected to an amplifier. In a differential configuration, .+-.UWB inputs are connected to separate antennas or to two halves of a dipole antenna. The two input lines include samplers which are commonly strobed by a gating pulse with a very low duty cycle. In a single ended configuration, only a single strobed input line and sampler is utilized. The samplers integrate, or average, up to 10,000 pulses to achieve high sensitivity and good rejection of uncorrelated signals.

  5. Nanofluid-based receivers for high-temperature, high-flux direct solar collectors

    E-Print Network [OSTI]

    Lenert, Andrej

    2010-01-01T23:59:59.000Z

    Solar power plants with surface receivers have low overall energy conversion efficiencies due to large emissive losses at high temperatures. Alternatively, volumetric receivers promise increased performance because solar ...

  6. Kazakhstan receiving acreage applications

    SciTech Connect (OSTI)

    Not Available

    1995-01-09T23:59:59.000Z

    Kazakhstan is receiving applications for exploration and development rights to large tracts in the central and eastern parts of the republic. The program is part of a country-wide effort to attract more foreign investigators to help underwrite massive industrial privatization aimed at revitalizing Kazakhstan's economy. A delegation of Kazakh officials visited Houston the last week in November to publicize petroleum opportunities in the republic and appeared Dec. 1--2 at a conference to present an overview of Kazakhstan's petroleum prospectivity. Officials also reviewed recently approved legal, financial, and environmental legislation intended to improve the attractiveness of investing in Kazakhstan's energy sector. This paper discusses the status of development, gives a geologic overview, and highlights the geology of the South Torgay and Teniz basins.

  7. High-temperature ceramic receivers

    SciTech Connect (OSTI)

    Jarvinen, P. O.

    1980-01-01T23:59:59.000Z

    An advanced ceramic dome cavity receiver is discussed which heats pressurized gas to temperatures above 1800/sup 0/F (1000/sup 0/C) for use in solar Brayton power systems of the dispersed receiver/dish or central receiver type. Optical, heat transfer, structural, and ceramic material design aspects of the receiver are reported and the development and experimental demonstration of a high-temperature seal between the pressurized gas and the high-temperature silicon carbide dome material is described.

  8. Emergence of Attention within a Neural Population

    E-Print Network [OSTI]

    We present a dynamic model of attention based on the Continuum Neural Field Theory that explains attention as being an emergent property of a neural population. This model is experimentally proved to be very robust and able to track one static or moving target in the presence of very strong noise or in the presence of a lot of distractors, even more salient than the target. This attentional property is not restricted to the visual case and can be considered as a generic attentional process of any spatio-temporal continuous input.

  9. Attention: Bits versus Wows (Invited Paper)

    E-Print Network [OSTI]

    Itti, Laurent

    Attention: Bits versus Wows (Invited Paper) Pierre Baldi Department of Computer Science University stimuli, abrupt changes in luminance, and motion energy [10], [11], [12]. However, with dynamic natural

  10. attention value: Topics by E-print Network

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

    singletons interfered with search for red Leber, Andy 47 Developmental attentional dyslexia 1 Developmental attentional dyslexia 2 Developmental attentional dyslexia CiteSeer...

  11. attention lapses: Topics by E-print Network

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

    sional field). Third, a subset Chatterjee, Anjan 107 Developmental attentional dyslexia 1 Developmental attentional dyslexia 2 Developmental attentional dyslexia CiteSeer...

  12. Neural Mechanisms Underlying Selective Attention to Threat

    E-Print Network [OSTI]

    Bishop, Sonia

    Neural Mechanisms Underlying Selective Attention to Threat SONIA J. BISHOP Behavioural and Clinical. This provides a framework for inves- tigating the neural mechanisms underlying selective attention to threat. Both subcortical regions implicated in threat detection--specifically the amygdala--and prefrontal

  13. UWB delay and multiply receiver

    DOE Patents [OSTI]

    Dallum, Gregory E.; Pratt, Garth C.; Haugen, Peter C.; Romero, Carlos E.

    2013-09-10T23:59:59.000Z

    An ultra-wideband (UWB) delay and multiply receiver is formed of a receive antenna; a variable gain attenuator connected to the receive antenna; a signal splitter connected to the variable gain attenuator; a multiplier having one input connected to an undelayed signal from the signal splitter and another input connected to a delayed signal from the signal splitter, the delay between the splitter signals being equal to the spacing between pulses from a transmitter whose pulses are being received by the receive antenna; a peak detection circuit connected to the output of the multiplier and connected to the variable gain attenuator to control the variable gain attenuator to maintain a constant amplitude output from the multiplier; and a digital output circuit connected to the output of the multiplier.

  14. RECEIVED

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem Not Found Item Not Foundenhancer activity than FINAL Progress Report Project#ski

  15. Project Profile: Direct Supercritical Carbon Dioxide Receiver...

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

    Direct Supercritical Carbon Dioxide Receiver Development Project Profile: Direct Supercritical Carbon Dioxide Receiver Development National Renewable Energy Laboratory logo The...

  16. Radiant energy receiver having improved coolant flow control means

    DOE Patents [OSTI]

    Hinterberger, H.

    1980-10-29T23:59:59.000Z

    An improved coolant flow control for use in radiant energy receivers of the type having parallel flow paths is disclosed. A coolant performs as a temperature dependent valve means, increasing flow in the warmer flow paths of the receiver, and impeding flow in the cooler paths of the receiver. The coolant has a negative temperature coefficient of viscosity which is high enough such that only an insignificant flow through the receiver is experienced at the minimum operating temperature of the receiver, and such that a maximum flow is experienced at the maximum operating temperature of the receiver. The valving is accomplished by changes in viscosity of the coolant in response to the coolant being heated and cooled. No remotely operated valves, comparators or the like are needed.

  17. SES Performance-Based Pay Increase

    Broader source: Energy.gov [DOE]

    An agency may provide a pay increase to allow a senior executive to advance his or her relative position with the SES rate range only upon a determination by the authorized agency official that the executive’s individual performance and/or contribution to agency performance so warrant. A senior executive who receives an annual summary rating of Outstanding or equivalent may be considered for an annual pay increase. A senior executive who receives an annual summary rating of less than Fully Successful or equivalent may not receive an increase in pay for the current appraisal period. The expectation is that executives who are paid consistent with their current level of responsibilities and who receive an acceptable (“Fully Successful” or better) annual summary rating will be eligible to receive a discretionary performance-based pay increase. Pay increases that advance an executive's position in the SES rate range restart the clock under the 12-month rule.

  18. UWB communication receiver feedback loop

    DOE Patents [OSTI]

    Spiridon, Alex (Palo Alto, CA); Benzel, Dave (Livermore, CA); Dowla, Farid U. (Castro Valley, CA); Nekoogar, Faranak (San Ramon, CA); Rosenbury, Erwin T. (Castro Valley, CA)

    2007-12-04T23:59:59.000Z

    A novel technique and structure that maximizes the extraction of information from reference pulses for UWB-TR receivers is introduced. The scheme efficiently processes an incoming signal to suppress different types of UWB as well as non-UWB interference prior to signal detection. Such a method and system adds a feedback loop mechanism to enhance the signal-to-noise ratio of reference pulses in a conventional TR receiver. Moreover, sampling the second order statistical function such as, for example, the autocorrelation function (ACF) of the received signal and matching it to the ACF samples of the original pulses for each transmitted bit provides a more robust UWB communications method and system in the presence of channel distortions.

  19. Central solar-energy receiver

    DOE Patents [OSTI]

    Not Available

    1981-10-27T23:59:59.000Z

    An improved tower-mounted central solar energy receiver for heating air drawn through the receiver by an induced draft fan is described. A number of vertically oriented, energy absorbing, fin-shaped slats are radially arranged in a number of concentric cylindrical arrays on top of the tower coaxially surrounding a pipe having air holes through which the fan draws air which is heated by the slats which receive the solar radiation from a heliostat field. A number of vertically oriented and wedge-shaped columns are radially arranged in a number of concentric cylindrical clusters surrounding the slat arrays. The columns have two mirror-reflecting sides to reflect radiation into the slat arrays and one energy absorbing side to reduce reradiation and reflection from the slat arrays.

  20. Accounts Receivable Western Michigan University

    E-Print Network [OSTI]

    de Doncker, Elise

    Accounts Receivable Western Michigan University 1903 W. Michigan Avenue Kalamazoo, MI 49008 have read the Western Michigan University Third Party Billing Policy and agree to the terms. I am authorizing Western Michigan University to bill for the specified tuition and related fees for the term

  1. Accounts Receivable Western Michigan University

    E-Print Network [OSTI]

    de Doncker, Elise

    Accounts Receivable Western Michigan University 1903 W. Michigan Avenue Kalamazoo, MI 49008-5210 269 387-4251 Fax 269 387-4227 THIRD PARTY BILLING POLICY Western Michigan University (WMU# (269) 387-4227 Western Michigan University 1903 W. Michigan Avenue E-mail: wmu

  2. Precise attention filters for Weber contrast derived from centroid estimations

    E-Print Network [OSTI]

    Sperling, George

    Precise attention filters for Weber contrast derived from centroid estimations Department attention filters for Weber contrast derived from centroid estimations. Journal of Vision, 10(10):20, 1

  3. auditory attention performance: Topics by E-print Network

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

    eScholarship Repository Summary: ML: Auditory perceptual grouping and attention in dyslexia.of attention on neuroelectric correlates of auditory streamauditory streaming appears...

  4. auditory attention cues: Topics by E-print Network

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

    eScholarship Repository Summary: ML: Auditory perceptual grouping and attention in dyslexia.of attention on neuroelectric correlates of auditory streamauditory streaming appears...

  5. auditory attention activates: Topics by E-print Network

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

    eScholarship Repository Summary: ML: Auditory perceptual grouping and attention in dyslexia.of attention on neuroelectric correlates of auditory streamauditory streaming appears...

  6. Augmented Prefrontal Acetylcholine Release during Challenged Attentional

    E-Print Network [OSTI]

    Bruno, John P.

    by bilateral basal forebrain infusions of the NMDA receptor antagonist DL-2- amino-5-phosphonovaleric acid (APV in a sustained attention task and equipped with three guide cannula for the bilateral infusion of the NMDA prefrontal cortex (mPFC). APV or vehicle was infused remotely following completion of the first of five

  7. Visual Attention: Light Enters the Jochen Braun

    E-Print Network [OSTI]

    Braun, Jochen

    Visual Attention: Light Enters the Jungle Jochen Braun Recent studies focusing on basic visual-perceptual processing that awareness entails -- short-term memory, percep- tual decisions, voluntary responses and so time. The coaxing was done by a visual search near fixation, which the observer was obliged to carry

  8. Research Report Attentional Modulation of Visual

    E-Print Network [OSTI]

    Nottingham, University of

    Research Report Attentional Modulation of Visual Processing in Adult Dyslexia A Spatial play a causal role in dyslexia. How- ever, traditional methods for investigating this assertion have that this spatial-cuing deficit is not merely a sec- ondary consequence of magnocellular dysfunction. Dyslexia

  9. SAW correlator spread spectrum receiver

    DOE Patents [OSTI]

    Brocato, Robert W

    2014-04-01T23:59:59.000Z

    A surface acoustic wave (SAW) correlator spread-spectrum (SS) receiver is disclosed which utilizes a first demodulation stage with a chip length n and a second demodulation stage with a chip length m to decode a transmitted SS signal having a code length l=n.times.m which can be very long (e.g. up to 2000 chips or more). The first demodulation stage utilizes a pair of SAW correlators which demodulate the SS signal to generate an appropriate code sequence at an intermediate frequency which can then be fed into the second demodulation stage which can be formed from another SAW correlator, or by a digital correlator. A compound SAW correlator comprising two input transducers and a single output transducer is also disclosed which can be used to form the SAW correlator SS receiver, or for use in processing long code length signals.

  10. Digital-data receiver synchronization

    DOE Patents [OSTI]

    Smith, Stephen F.; Turner, Gary W.

    2005-08-02T23:59:59.000Z

    Digital-data receiver synchronization is provided with composite phase-frequency detectors, mutually cross-connected comparison feedback or both to provide robust reception of digital data signals. A single master clock can be used to provide frequency signals. Advantages can include fast lock-up time in moderately to severely noisy conditions, greater tolerance to noise and jitter when locked, and improved tolerance to clock asymmetries.

  11. Receiver designs for multiuser underwater acoustic communications

    E-Print Network [OSTI]

    Cho, Steve E.

    2012-01-01T23:59:59.000Z

    Receiver block diagram employing SIC, ATR, MP, and a jointReceiver block diagram employing SIC, ATR, MP, and a joint

  12. The Entropy of Attention and Popularity in YouTube Videos

    E-Print Network [OSTI]

    Morgan, Jonathan Scott; Lampe, Cliff; Radha, Hayder

    2014-01-01T23:59:59.000Z

    The vast majority of YouTube videos never become popular, languishing in obscurity with few views, no likes, and no comments. We use information theoretical measures based on entropy to examine how time series distributions of common measures of popularity in videos from YouTube's "Trending videos" and "Most recent" video feeds relate to the theoretical concept of attention. While most of the videos in the "Most recent" feed are never popular, some 20% of them have distributions of attention metrics and measures of entropy that are similar to distributions for "Trending videos". We analyze how the 20% of "Most recent" videos that become somewhat popular differ from the 80% that do not, then compare these popular "Most recent" videos to different subsets of "Trending videos" to try to characterize and compare the attention each receives.

  13. Increasing security in inter-chip communication

    DOE Patents [OSTI]

    Edwards, Nathan J; Hamlet, Jason; Bauer, Todd; Helinski, Ryan

    2014-10-28T23:59:59.000Z

    An apparatus for increasing security in inter-chip communication includes a sending control module, a communication bus, and a receiving control module. The communication bus is coupled between the sending control module and the receiving control module. The sending control module operates to send data on the communication bus, disable the communication bus when threats are detected, or both.

  14. Receiving Water and Other Impacts Robert Pitt

    E-Print Network [OSTI]

    Pitt, Robert E.

    5-1 Chapter 5 Receiving Water and Other Impacts Robert Pitt Desired Water Uses Versus Stormwater Impacts The main purpose of treating stormwater is to reduce its adverse impacts on receiving water of the detrimental effects that runoff is actually having on a receiving water. Urban receiving waters may have many

  15. Low cost multi-channel GPS receiver

    E-Print Network [OSTI]

    Painter, John H.; Tachita, R.; Ikeda, K.; Teranishi, A.; Noe, P.S.

    1988-11-29T23:59:59.000Z

    An investigation was conducted on compact, multichannel GPS (global positioning system) receivers. The code generator and correlation equipment were simplified, attempting to avoid downgrading the properties possessed by multichannel receivers...

  16. Pantex receives National Weather Service recognition | National...

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

    receives National Weather Service recognition | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile Preventing...

  17. DEVELOPMENTAL LEARNING FOR VISION-BASED NAVIGATION, ATTENTION

    E-Print Network [OSTI]

    -BASED NAVIGATION, ATTENTION AND RECOGNITION By Zhengping Ji Over a half century has passed since Alan Turing

  18. An Instance Theory of Attention and Memory Gordon D. Logan

    E-Print Network [OSTI]

    Logan, Gordon D.

    of attention and memory (ITAM) is presented that integrates formal theories of attention and memory phenomena; objects are categorized by attending to them. ITAM incorporates each of its ancestors as a special case of this heritage, I call the new theory the instance theory of attention and memory (ITAM). Its ancestors on each

  19. Receiver for solar energy collector having improved aperture aspect

    DOE Patents [OSTI]

    McIntire, William R. (Downers Grove, IL)

    1984-01-01T23:59:59.000Z

    A secondary concentrator for use in receiver systems for linear focusing primary concentrators is provided with reflector wings at each end. The wings increase the capture of light rays reflected from areas adjacent the rim of a primary concentrator, increasing the apparent aperture size of the absorber as viewed from the rim of the primary concentrator. The length, tilt, and curvature of the wing reflectors can be adjusted to provide an absorber having a desired aperture aspect.

  20. Look at this: the neural correlates of initiating and responding to bids for joint attention

    E-Print Network [OSTI]

    Redcay, Elizabeth

    When engaging in joint attention, one person directs another person's attention to an object (Initiating Joint Attention, IJA), and the second person's attention follows (Responding to Joint Attention, RJA). As such, joint ...

  1. A New Argus Direct Conversion Receiver and Digital Array Receiver/Processor

    E-Print Network [OSTI]

    Ellingson, Steven W.

    A New Argus Direct Conversion Receiver and Digital Array Receiver/Processor Grant Hampson and Steve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 References 20 Appendix A: Direct Conversion FPGA Source Code 21 Appendix B: Digital Receiver system. The new architecture consists of four main components: a Direct Conversion Receiver (DCR

  2. Executive Attention and Action Selection in a Neurally Controlled Simulated Robot Executive Attention, Task Selection and Attention-based Learning in a

    E-Print Network [OSTI]

    Meehan, Anthony

    attention, which is used to control both automatic (reactive) and willed action selection in a simulated features of human attentional control: selection of an intended task over a more salient automatic task inattentive to important cues in the world [27]. Our strategy for developing robot control systems is born

  3. Digitally Assisted Multi-Channel Receivers

    E-Print Network [OSTI]

    Pentakota, Krishna Anand Santosh Spikanth

    2011-10-21T23:59:59.000Z

    -channel charge sampling receivers with sinc filter banks together with a complete system calibration and synchronization algorithm for the receiver. A unified model has been defined for the receiver containing all first order mismatches, offsets... and imperfections and a technique based on least mean squares algorithm is employed to track these errors. The performance of this technique under noisy channel conditions has been verified. The sinc filter bank is compared with the conventional analog filter...

  4. High-Flux Microchannel Solar Receiver

    Broader source: Energy.gov [DOE]

    This fact sheet describes a high-flux, microchannel solar receiver project awarded under the DOE's 2012 SunShot Concentrating Solar Power R&D award program. The team, led by Oregon State University, is working to demonstrate a microchannel-based solar receiver capable of absorbing high solar flux, while using a variety of liquid and gaseous working fluids. High-flux microchannel receivers have the potential to dramatically reduce the size and cost of a solar receiver by minimizing re-radiation and convective losses.

  5. Argonne receives 2014 Illinois Governor's Sustainability Award...

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

    receives 2014 Illinois Governor's Sustainability Award By Else Tennessen * November 10, 2014 Tweet EmailPrint On Oct. 23, Argonne National Laboratory was presented with the...

  6. Particle Receiver Integrated with Fludized Bed

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

    of solar collection from the solar field to the receiver, energy conversion systems, and thermal energy storage. Concentrating Solar Power NATIONAL RENEWABLE ENERGY LABORATORY...

  7. Sandia Energy - Sandia Workers Received Entrepreneurial Spirit...

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

    Received Entrepreneurial Spirit Awards Jim Pacheco built a reputation in concentrating solar power and was recruited by several companies when the technology took off in the...

  8. Receiver designs for multiuser underwater acoustic communications

    E-Print Network [OSTI]

    Cho, Steve E.

    2012-01-01T23:59:59.000Z

    compensate for the Doppler effect. The receiver discussed in? p = ? p /? p . The Doppler effect compresses or dilateschar- acterizes the Doppler effect in narrowband systems (W

  9. High-Temperature Falling-Particle Receiver

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

    | April 15, 2013 | Ho * This project employs modeling, design, testing, and optimization to further develop and improve key areas of falling particle receiver technology...

  10. High-Temperature Falling-Particle Receiver

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

    | June 15, 2013 | Ho * This project employs modeling, design, testing, and optimization to further develop and improve key areas of falling particle receiver technology...

  11. Sandia National Laboratories: Solar Receiver Shroud

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

    Receiver Shroud Pratt Whitney Rocketdyne Testing On December 19, 2012, in Concentrating Solar Power, EC, Energy, Facilities, National Solar Thermal Test Facility, News, News &...

  12. High-Temperature Falling-Particle Receiver

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

    temperatures, nitrate salt fluids become chemically unstable. In contrast, direct absorption receivers using solid particles that fall through a beam of concentrated solar...

  13. Near-Blackbody Enclosed Particle Receiver

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

    radiative principles. Innovative Receiver Design 7 2. Transform 2-D panel heat absorption to 3-D volumetric heat transfer by using arrayed absorber tubes. Aperture flux Wall...

  14. Liquid cooled fiber thermal radiation receiver

    DOE Patents [OSTI]

    Butler, B.L.

    1985-03-29T23:59:59.000Z

    A radiation-to-thermal receiver apparatus for collecting radiation and converting it to thermal energy is disclosed. The invention includes a fibrous mat material which captures radiation striking the receiver. Captured radiation is removed from the fibrous mat material by a transparent fluid within which the material is bathed.

  15. attentional stability neural: Topics by E-print Network

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

    the Stability Region of a Neural Network with a General Distribution of Delays R Campbell, Sue Ann 38 A neural oscillator model of binaural auditory selective attention...

  16. attention deficit and disruptive behavior disorders: Topics by...

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

    Requirements for ADDADHD Attention Deficit Disorder, with and without Hyperactivity Energy Storage, Conversion and Utilization Websites Summary: ) Practitioners need to adhere...

  17. alter visual attention: Topics by E-print Network

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

    brain's ... Hurlbert, Anya 1986-09-01 39 Visual attentional processes in adults with dyslexia . Open Access Theses and Dissertations Summary: ??Deficits in sensory processing of...

  18. adult attention deficit: Topics by E-print Network

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

    a catecholaminergic Scheres, Anouk 55 Visual attentional processes in adults with dyslexia . Open Access Theses and Dissertations Summary: ??Deficits in sensory processing of...

  19. attention inhibitory control: Topics by E-print Network

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

    Booth Rochester Institute a viewer's attention has important applications in computer graphics, data visualization, image analysis, and train- ing. Existing computer-based gaze...

  20. The Importance of Attention and Object Representation for Visual Processing

    E-Print Network [OSTI]

    Kang, Julie J

    2010-01-01T23:59:59.000Z

    the object-based theory definition of a preattentive objectthe UCR object theory is the definition of a preattentivebase attention theories provide an a priori definition of a

  1. attention reduces stimulus-driven: Topics by E-print Network

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

    sional field). Third, a subset Chatterjee, Anjan 67 Developmental attentional dyslexia 1 Developmental attentional dyslexia 2 Developmental attentional dyslexia CiteSeer...

  2. attention reshapes center-surround: Topics by E-print Network

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

    sional field). Third, a subset Chatterjee, Anjan 76 Developmental attentional dyslexia 1 Developmental attentional dyslexia 2 Developmental attentional dyslexia CiteSeer...

  3. PPPL receives $4.3 million to increase understanding of the role...

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

    for research into the role of plasma in synthesizing nanoparticles, in PPPL's nanotechnology laboratory. (Photo by Elle StarkmanPPPL Office of Communications) Physicist...

  4. PPPL receives $4.3 million to increase understanding of the role that

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for RenewableSpeedingBiomass and4/26/11:Tel.:162Physics| Princeton Plasmaplasma plays in

  5. Los Alamos National Laboratory employees receive Pollution Prevention...

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

    Employees Receive Pollution Prevention Awards Los Alamos National Laboratory employees receive Pollution Prevention Awards Nearly 400 employees on 47 teams received Pollution...

  6. Baseload Nitrate Salt Central Receiver Power Plant Design Final Report

    SciTech Connect (OSTI)

    Tilley, Drake; Kelly, Bruce; Burkholder, Frank

    2014-12-12T23:59:59.000Z

    The objectives of the work were to demonstrate that a 100 MWe central receiver plant, using nitrate salt as the receiver coolant, thermal storage medium, and heat transport fluid in the steam generator, can 1) operate, at full load, for 6,400 hours each year using only solar energy, and 2) satisfy the DOE levelized energy cost goal of $0.09/kWhe (real 2009 $). To achieve these objectives the work incorporated a large range of tasks relating to many different aspects of a molten salt tower plant. The first Phase of the project focused on developing a baseline design for a Molten Salt Tower and validating areas for improvement. Tasks included a market study, receiver design, heat exchanger design, preliminary heliostat design, solar field optimization, baseline system design including PFDs and P&IDs and detailed cost estimate. The baseline plant met the initial goal of less than $0.14/kWhe, and reinforced the need to reduce costs in several key areas to reach the overall $0.09/kWhe goal. The major improvements identified from Phase I were: 1) higher temperature salt to improve cycle efficiency and reduce storage requirements, 2) an improved receiver coating to increase the efficiency of the receiver, 3) a large receiver design to maximize storage and meet the baseload hours objective, and 4) lower cost heliostat field. The second Phase of the project looked at advancing the baseline tower with the identified improvements and included key prototypes. To validate increasing the standard solar salt temperature to 600 °C a dynamic test was conducted at Sandia. The results ultimately proved the hypothesis incorrect and showed high oxide production and corrosion rates. The results lead to further testing of systems to mitigate the oxide production to be able to increase the salt temperature for a commercial plant. Foster Wheeler worked on the receiver design in both Phase I and Phase II looking at both design and lowering costs utilizing commercial fossil boiler manufacturing. The cost and design goals for the project were met with this task, but the most interesting results had to do with defining the failure modes and looking at a “shakedown analysis” of the combined creep-fatigue failure. A separate task also looked at improving the absorber coatings on the receiver tubes that would improve the efficiency of the receiver. Significant progress was made on developing a novel paint with a high absorptivity that was on par with the current Pyromark, but shows additional potential to be optimized further. Although the coating did not meet the emissivity goals, preliminary testing the new paint shows potential to be much more durable, and potential to improve the receiver efficiency through a higher average absorptivity over the lifetime. Additional coatings were also designed and modeled results meet the project goals, but were not tested. Testing for low cycle fatigue of the full length receiver tubes was designed and constructed, but is still currently undergoing testing. A novel small heliostat was developed through an extensive brainstorming and down select. The concept was then detailed further with inputs from component testing and eventually a full prototype was built and tested. This task met or exceeded the accuracy and structure goals and also beat the cost goal. This provides a significant solar field costs savings for Abengoa that will be developed further to be used in future commercial plants. Ultimately the $0.09/kWhe (real 2009 $) and 6,400 hours goals of the project were met.

  7. Global Positioning System receiver evaluation results

    SciTech Connect (OSTI)

    Byrne, R.H.

    1993-09-01T23:59:59.000Z

    A Sandia project currently uses an outdated Magnavox 6400 Global Positioning System (GPS) receiver as the core of its navigation system. The goal of this study was to analyze the performance of the current GPS receiver compared to newer, less expensive models and to make recommendations on how to improve the performance of the overall navigation system. This paper discusses the test methodology used to experimentally analyze the performance of different GPS receivers, the test results, and recommendations on how an upgrade should proceed. Appendices contain detailed information regarding the raw data, test hardware, and test software.

  8. Heat Pipe Solar Receiver Development Activities at Sandia National Laboratories

    SciTech Connect (OSTI)

    Adkins, D.R.; Andraka, C.E.; Moreno, J.B.; Moss, T.A.; Rawlinson, K.S.; Showalter, S.K.

    1999-01-08T23:59:59.000Z

    Over the past decade, Sandia National Laboratories has been involved in the development of receivers to transfer energy from the focus of a parabolic dish concentrator to the heater tubes of a Stirling engine. Through the isothermal evaporation and condensation of sodium. a heat-pipe receiver can efficiently transfer energy to an engine's working fluid and compensate for irregularities in the flux distribution that is delivered by the concentrator. The operation of the heat pipe is completely passive because the liquid sodium is distributed over the solar-heated surface by capillary pumping provided by a wick structure. Tests have shown that using a heat pipe can boost the system performance by twenty percent when compared to directly illuminating the engine heater tubes. Designing heat pipe solar receivers has presented several challenges. The relatively large area ({approximately}0.2 m{sup 2}) of the receiver surface makes it difficult to design a wick that can continuously provide liquid sodium to all regions of the heated surface. Selecting a wick structure with smaller pores will improve capillary pumping capabilities of the wick, but the small pores will restrict the flow of liquid and generate high pressure drops. Selecting a wick that is comprised of very tine filaments can increase the permeability of the wick and thereby reduce flow losses, however, the fine wick structure is more susceptible to corrosion and mechanical damage. This paper provides a comprehensive review of the issues encountered in the design of heat pipe solar receivers and solutions to problems that have arisen. Topics include: flow characterization in the receiver, the design of wick systems. the minimization of corrosion and dissolution of metals in sodium systems. and the prevention of mechanical failure in high porosity wick structures.

  9. Approach Motivation and Attentional Breadth: Role of Construal Levels

    E-Print Network [OSTI]

    Serra, Raymond Nicholas

    2011-02-22T23:59:59.000Z

    APPROACH MOTIVATION AND ATTENTIONAL BREADTH: ROLE OF CONSTRUAL LEVELS A Thesis by RAYMOND NICHOLAS SERRA Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE December 2010 Major Subject: Psychology Approach Motivation and Attentional Breadth: Role of Construal Levels Copyright 2010 Raymond Nicholas Serra APPROACH...

  10. On the Need for a Framework for Attentive Groupware Systems

    E-Print Network [OSTI]

    Antunes, Pedro

    the balance between the rising needs for collabora- tion with the rising costs of not paying attention by computers are relatively poor when compared with more natural settings, such as face-to-face meetings [2 for information and communication rise so do the costs of not paying attention and being interrupted [3]. So

  11. Solar central receiver systems comparative economics

    SciTech Connect (OSTI)

    Eicker, P J

    1980-04-01T23:59:59.000Z

    Several major conceptual design studies of solar central receiver systems and components have been completed in the last year. The results of these studies are used to compare the projected cost of electric power generation using central receiver systems with that of more conventional power generation. The cost estimate for a molten salt central receiver system is given. Levelized busbar energy cost is shown as a function of annual capacity factor indicating the fraction of the cost due to each of the subsystems. The estimated levelized busbar energy cost for a central receiver (70 to 90 mills per kilowatt hour) is compared with the levelized busbar energy cost for a new coal fired Rankine cycle plant. Sensitivities to the initial cost of coal and the delta fuel escalation are shown. (WHK)

  12. Collector/Receiver Characterization (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2010-08-01T23:59:59.000Z

    Fact sheet describing NREL CSP Program capabilities for collector/receiver characterization: determining optical efficiency, measuring heat loss, developing and testing concentrators, concentrating the sun's power, and optically characterizing CSP plants.

  13. One Video Stream to Serve Diverse Receivers

    E-Print Network [OSTI]

    Woo, Grace

    2008-10-18T23:59:59.000Z

    The fundamental problem of wireless video multicast is to scalably serve multiple receivers which may have very different channel characteristics. Ideally, one would like to broadcast a single stream that allows each ...

  14. A handbook for solar central receiver design

    SciTech Connect (OSTI)

    Falcone, P.K.

    1986-12-01T23:59:59.000Z

    This Handbook describes central receiver technology for solar thermal power plants. It contains a description and assessment of the major components in a central receiver system configured for utility scale production of electricity using Rankine-cycle steam turbines. It also describes procedures to size and optimize a plant and discussed examples from recent system analyses. Information concerning site selection criteria, cost estimation, construction, and operation and maintenance is also included, which should enable readers to perform design analyses for specific applications.

  15. Polymers with increased order

    DOE Patents [OSTI]

    Sawan, Samuel P. (Tyngsborough, MA); Talhi, Abdelhafid (Rochester, MI); Taylor, Craig M. (Jemez Springs, NM)

    1998-08-25T23:59:59.000Z

    The invention features polymers with increased order, and methods of making them featuring a dense gas.

  16. Liquid cooled, linear focus solar cell receiver

    DOE Patents [OSTI]

    Kirpich, Aaron S. (Broomall, PA)

    1985-01-01T23:59:59.000Z

    Separate structures for electrical insulation and thermal conduction are established within a liquid cooled, linear focus solar cell receiver for use with parabolic or Fresnel optical concentrators. The receiver includes a V-shaped aluminum extrusion having a pair of outer faces each formed with a channel receiving a string of solar cells in thermal contact with the extrusion. Each cell string is attached to a continuous glass cover secured within the channel with spring clips to isolate the string from the external environment. Repair or replacement of solar cells is effected simply by detaching the spring clips to remove the cover/cell assembly without interrupting circulation of coolant fluid through the receiver. The lower surface of the channel in thermal contact with the cells of the string is anodized to establish a suitable standoff voltage capability between the cells and the extrusion. Primary electrical insulation is provided by a dielectric tape disposed between the coolant tube and extrusion. Adjacent solar cells are soldered to interconnect members designed to accommodate thermal expansion and mismatches. The coolant tube is clamped into the extrusion channel with a releasably attachable clamping strip to facilitate easy removal of the receiver from the coolant circuit.

  17. Liquid cooled, linear focus solar cell receiver

    DOE Patents [OSTI]

    Kirpich, A.S.

    1983-12-08T23:59:59.000Z

    Separate structures for electrical insulation and thermal conduction are established within a liquid cooled, linear focus solar cell receiver for use with parabolic or Fresnel optical concentrators. The receiver includes a V-shaped aluminum extrusion having a pair of outer faces each formed with a channel receiving a string of solar cells in thermal contact with the extrusion. Each cell string is attached to a continuous glass cover secured within the channel with spring clips to isolate the string from the external environment. Repair or replacement of solar cells is effected simply by detaching the spring clips to remove the cover/cell assembly without interrupting circulation of coolant fluid through the receiver. The lower surface of the channel in thermal contact with the cells of the string is anodized to establish a suitable standoff voltage capability between the cells and the extrusion. Primary electrical insulation is provided by a dielectric tape disposed between the coolant tube and extrusion. Adjacent solar cells are soldered to interconnect members designed to accommodate thermal expansion and mismatches. The coolant tube is clamped into the extrusion channel with a releasably attachable clamping strip to facilitate easy removal of the receiver from the coolant circuit.

  18. Dish/stirling hybrid-receiver

    DOE Patents [OSTI]

    Mehos, Mark S. (Boulder, CO); Anselmo, Kenneth M. (Arvada, CO); Moreno, James B. (Albuquerque, NM); Andraka, Charles E. (Albuquerque, NM); Rawlinson, K. Scott (Albuquerque, NM); Corey, John (Melrose, NY); Bohn, Mark S. (Golden, CO)

    2002-01-01T23:59:59.000Z

    A hybrid high-temperature solar receiver is provided which comprises a solar heat-pipe-receiver including a front dome having a solar absorber surface for receiving concentrated solar energy, a heat pipe wick, a rear dome, a sidewall joining the front and the rear dome, and a vapor and a return liquid tube connecting to an engine, and a fossil fuel fired combustion system in radial integration with the sidewall for simultaneous operation with the solar heat pipe receiver, the combustion system comprising an air and fuel pre-mixer, an outer cooling jacket for tangentially introducing and cooling the mixture, a recuperator for preheating the mixture, a burner plenum having an inner and an outer wall, a porous cylindrical metal matrix burner firing radially inward facing a sodium vapor sink, the mixture ignited downstream of the matrix forming combustion products, an exhaust plenum, a fossil-fuel heat-input surface having an outer surface covered with a pin-fin array, the combustion products flowing through the array to give up additional heat to the receiver, and an inner surface covered with an extension of the heat-pipe wick, a pin-fin shroud sealed to the burner and exhaust plenums, an end seal, a flue-gas diversion tube and a flue-gas valve for use at off-design conditions to limit the temperature of the pre-heated air and fuel mixture, preventing pre-ignition.

  19. attention time courses: Topics by E-print Network

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

    Attention regulates the plasticity of multisensory timing James Heron,1 Neil W. Roach,2 David Whitaker1 and James V. M. Hanson1 1 Bradford School of Optometry and Vision...

  20. Low cost multi-channel GPS receiver 

    E-Print Network [OSTI]

    Painter, John H.; Tachita, R.; Ikeda, K.; Teranishi, A.; Noe, P.S.

    1988-11-29T23:59:59.000Z

    and receiver. 455 CH2675-7/88/0000-0455 $1.00 0 1988 IEEE Authorized licensed use limited to: Texas A M University. Downloaded on February 18,2010 at 16:25:37 EST from IEEE Xplore. Restrictions apply. In the section entitled Receiver Configuration...:25:37 EST from IEEE Xplore. Restrictions apply. NCO - For the carrier regeneration of the satellite signals, an NCO is used. The NCO, similar to the code generator, inputs a clock pulse of a constant frequency to control the phase of the regenerated...

  1. Implementation aspects of nonsynchronized binary receivers

    E-Print Network [OSTI]

    Wills, Wesley Mark

    1990-01-01T23:59:59.000Z

    , the signal is assumed to be transmitted across an additive white Gaussian noise (AWGN) channel. A. Likelihood Functions Assume that the modulation sequence x = (zi: z~ = kl, j = 1, 2, . . . , 1V) is trans- mitted over the AWGN channel as NRZ pulses, p... ~ ~ ~ S tart of Observations Fig. 2. Timing Error of Unsynchronized Receiver. zj+2 Prj 2 &Vs VAA[rtj I x, r] = ?, i = 1, 2, (2. 6) where r is the normalized timing error, r'/T. Finally, the density of the received vector r = frtt&rrt??N&rrtv) conditioned...

  2. Measuring overall emittance of concentrator receiver pipes

    SciTech Connect (OSTI)

    Gerich, J.W.; Reitter, T.A.; Merriam, M.F.

    1980-03-01T23:59:59.000Z

    A simple and accurate method for measuring the overall emittance of receiver pipes used with cylindrical concentrators is described. Experimental measurements obtained for steel pipes with a black chrome over nickel selective surface are presented. The observed strong temperature dependence of emittance indicates that the use of room temperature emittance data will substantially overestimate collector efficiency. (SPH)

  3. Patent Issued Additional Office Actions Received

    E-Print Network [OSTI]

    Cui, Yan

    Patent Issued Additional Office Actions Received 3-12 mo. Respond to Office Action Patent attorney The patent examiner provides notification of which claims in the application have been rejected or accepted determines there are multiple inventions in 1 application. Patent Application Published 6 mo. Non

  4. Congratulations to for receiving a 2011

    E-Print Network [OSTI]

    Nehorai, Arye

    Congratulations to Lan Yang for receiving a 2011 Presidential Early Career Award for Scientists, mo permit no. 2501 About the School of Engineering & Applied Science » Improving quality of life-of-the-art engineering facilities >> engineering.wustl.edu Lan Yang, PhD recipient of the 2011 Presidential Early Career

  5. Full-wave receiver architecture for the homodyne motion sensor

    DOE Patents [OSTI]

    Haugen, Peter C; Dallum, Gregory E; Welsh, Patrick A; Romero, Carlos E

    2013-11-19T23:59:59.000Z

    A homodyne motion sensor or detector based on ultra-wideband radar utilizes the entire received waveform through implementation of a voltage boosting receiver. The receiver includes a receiver input and a receiver output. A first diode is connected to the receiver output. A first charge storage capacitor is connected from between the first diode and the receiver output to ground. A second charge storage capacitor is connected between the receiver input and the first diode. A second diode is connected from between the second charge storage capacitor and the first diode to ground. The dual diode receiver performs voltage boosting of a RF signal received at the receiver input, thereby enhancing receiver sensitivity.

  6. A NEW SOLAR THERMAL RECEIVER UTILIZING SMALL PARTICLES

    E-Print Network [OSTI]

    Hunt, Arlon J.

    2011-01-01T23:59:59.000Z

    iuision, Ext. 6782 A New Solar Thermal Receiver UtilizingI \\D \\. }J F--' A NEW SOLAR THERMAL RECEIVER UTILIZING SMALL94720 ABSTRACT A new type of solar thermal receiver is being

  7. Signal processor for processing ultrasonic receiver signals

    DOE Patents [OSTI]

    Fasching, George E. (Morgantown, WV)

    1980-01-01T23:59:59.000Z

    A signal processor is provided which uses an analog integrating circuit in conjunction with a set of digital counters controlled by a precision clock for sampling timing to provide an improved presentation of an ultrasonic transmitter/receiver signal. The signal is sampled relative to the transmitter trigger signal timing at precise times, the selected number of samples are integrated and the integrated samples are transferred and held for recording on a strip chart recorder or converted to digital form for storage. By integrating multiple samples taken at precisely the same time with respect to the trigger for the ultrasonic transmitter, random noise, which is contained in the ultrasonic receiver signal, is reduced relative to the desired useful signal.

  8. Seventy-three New Mexico students receive Los Alamos Employees...

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

    Seventy-three students receive LAESF scholarships Seventy-three New Mexico students receive Los Alamos Employees' Scholarship Fund scholarships Raymond Fasano of Bernalillo High...

  9. Secretary Chu Announces 150 Students to Receive Graduate Fellowships...

    Energy Savers [EERE]

    150 Students to Receive Graduate Fellowships in Science, Mathematics and Engineering Secretary Chu Announces 150 Students to Receive Graduate Fellowships in Science, Mathematics...

  10. MAY 14, 2008 Chemistry and environmental science professor receives Carroll

    E-Print Network [OSTI]

    Reid, Scott A.

    MAY 14, 2008 Chemistry and environmental science professor receives Carroll College faculty award WAUKESHA, WIS.-- An associate professor of chemistry and environmental science has received an annual

  11. Los Alamos National Laboratory employees receive Pollution Prevention...

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

    Pollution Prevention Awardees Los Alamos National Laboratory employees receive Pollution Prevention Awards Nearly 400 employees on 47 teams received Pollution Prevention awards for...

  12. Sandia National Laboratories: Sandia Receives Award for Electronics...

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

    Sandia Receives Award for Electronics Stewardship September 19, 2011 electronics stewardship award ALBUQUERQUE, N.M. - Sandia National Laboratories has received an award for...

  13. Highly linear SAW-less receiver design techniques for CDMA

    E-Print Network [OSTI]

    Kim, Nam Soo

    2010-01-01T23:59:59.000Z

    Pyo, “A low power RF direct-conversion receiver/transmitterconsiderations for direct-conversion receivers,” IEEE Trans.2009. [50] A. Abidi, “Direct-conversion radio transceivers

  14. An RF Receiver Architecture for Intra-Band Carrier Aggregation

    E-Print Network [OSTI]

    Hwu, Sy-Chyuan

    2013-01-01T23:59:59.000Z

    Noise for Low-Power Direct-Conversion Receivers,” IEEE J.system-on-chip design. Direct?Conversion Receiver LPF ADC

  15. Project Profile: High-Efficiency Receivers for Supercritical...

    Energy Savers [EERE]

    Efficiency Receivers for Supercritical Carbon Dioxide Cycles Project Profile: High-Efficiency Receivers for Supercritical Carbon Dioxide Cycles Brayton logo Brayton Energy, under...

  16. Y-12 employees receive awards recognizing excellence in nuclear...

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

    receive ... Y-12 employees receive awards recognizing excellence in nuclear weapons program Posted: October 6, 2014 - 9:09am Defense Programs 2013 Award of Excellence recipient...

  17. he increasing frequency of detection of the widely used gasoline additive methyl tert-

    E-Print Network [OSTI]

    ether (MTBE) in both ground and sur- face waters is receiving much attention from the media and 10% of community drinking water sup- plies in high MTBE use areas show at least detectable concentrations of MTBE, and about 1% of those sys- tems are characterized by levels of this compound

  18. Increasing productivity: Another approach

    SciTech Connect (OSTI)

    Norton, F.J.

    1996-06-10T23:59:59.000Z

    An engineering information (EI) and information technology (IT) organization that must improve its productivity should work to further its business goals. This paper explores a comprehensive model for increasing EI/IT productivity by supporting organizational objectives.

  19. Top-Down Control of Visual Attention: A Rational Account

    E-Print Network [OSTI]

    Mozer, Michael C.

    is that repetition of features of recent trials (e.g., target color) facilitates performance. We view of different feature types to the saliency map. A key source of data concerning attentional control comes from behavioral studies in which the effect of recent experience is exam- ined as individuals repeatedly perform

  20. Aging and Top-Down Attentional Control in Visual Search

    E-Print Network [OSTI]

    McShea, Daniel W.

    systems that bias the gating of this featural information to later processing stages such as objectApril 2010 Aging and Top-Down Attentional Control in Visual Search Project Leads David J. Madden Security (DHS) to be able to assess and maintain this skill set in those employed as baggage screeners

  1. Attention and biased competition in multi-voxel object representations

    E-Print Network [OSTI]

    VanRullen, Rufin

    . In a multidimensional voxel space, the response to simultaneously-presented categories was well described as a weighted.e., univariate) fMRI methods (13­15), these recently discov- ered multivariate pattern analysis techniques have to understand attentional influences in large-scale multivariate representations of simultaneously

  2. Attention Based, Naive Strategies, for Guiding Intelligent Virtual Agents

    E-Print Network [OSTI]

    Corran, Ruth

    communication be- tween the components Several studies have demonstrated that human's feelings towards virtualAttention Based, Naive Strategies, for Guiding Intelligent Virtual Agents Damien Clauzel1 , Claudia). It is composed of speech, animations, expressions and other actions. Any action in the script may be assigned

  3. MEDICATION TREATMENT FOR ATTENTION DEFICIT DISORDERS UNLV STUDENT WELLNESS

    E-Print Network [OSTI]

    Hemmers, Oliver

    Jan 2010 MEDICATION TREATMENT FOR ATTENTION DEFICIT DISORDERS UNLV STUDENT WELLNESS SRWC (702) 895-3627 Due to the high potential for both abuse and possibly sudden unexpected death, UNLV Student Wellness for ADD/ADHD. You may contact the CAPS triage counselor or our care manager, Perris Kent, for an ADD

  4. CUNY EXPORT CONTROL PROCEDURES 17. Shipping/Receiving

    E-Print Network [OSTI]

    Rosen, Jay

    CUNY EXPORT CONTROL PROCEDURES 17. Shipping/Receiving This Section addresses the process for shipping and receiving tangible items under export license/authorization, transmission of export data. General Shipping and Receiving CUNY requires that Campus Shipping/Receiving personnel evaluate, for export

  5. Advanced motor driven clamped borehole seismic receiver

    DOE Patents [OSTI]

    Engler, B.P.; Sleefe, G.E.; Striker, R.P.

    1993-02-23T23:59:59.000Z

    A borehole seismic tool is described including a borehole clamp which only moves perpendicular to the borehole. The clamp is driven by an electric motor, via a right angle drive. When used as a seismic receiver, the tool has a three part housing, two of which are hermetically sealed. Accelerometers or geophones are mounted in one hermetically sealed part, the electric motor in the other hermetically sealed part, and the clamp and right angle drive in the third part. Preferably the tool includes cable connectors at both ends. Optionally a shear plate can be added to the clamp to extend the range of the tool.

  6. Advanced motor driven clamped borehole seismic receiver

    DOE Patents [OSTI]

    Engler, Bruce P. (Sandoval County, NM); Sleefe, Gerard E. (Bernalillo County, NM); Striker, Richard P. (Bernalillo County, NM)

    1993-01-01T23:59:59.000Z

    A borehole seismic tool including a borehole clamp which only moves perpendicular to the borehole. The clamp is driven by an electric motor, via a right angle drive. When used as a seismic receiver, the tool has a three part housing, two of which are hermetically sealed. Accelerometers or geophones are mounted in one hermetically sealed part, the electric meter in the other hermetically sealed part, and the clamp and right angle drive in the third part. Preferably the tool includes cable connectors at both ends. Optionally a shear plate can be added to the clamp to extend the range of the tool.

  7. LM Receives Sustainability Award | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment ofLetter Report:40PM toLED Lighting5-15 LM 05-15FIMSLM Receives

  8. Tom Harper receives cyber security award

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del SolStrengthening a solidSynthesisAppliances Tips:Harper receives cyber security

  9. WIPP receives 9,000th shipment

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron SpinPrincetonUsing Maps1DOE Awards Contract for19,WIPP receives 9,000th

  10. Fry receives Charles W. Briggs Award

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist.Newof Energy ForrestalPrinceton Plasma Physics09,Fry receives

  11. RDC receives award for Accelerate Program

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah47,193.70COMMUNITYResponses:December 11, 2014 PageRDC Receives Award

  12. Solar central receiver heliostat reflector assembly

    DOE Patents [OSTI]

    Horton, Richard H. (Schenectady, NY); Zdeb, John J. (Clifton Park, NY)

    1980-01-01T23:59:59.000Z

    A heliostat reflector assembly for a solar central receiver system comprises a light-weight, readily assemblable frame which supports a sheet of stretchable reflective material and includes mechanism for selectively applying tension to and positioning the sheet to stretch it to optical flatness. The frame is mounted on and supported by a pipe pedestal assembly that, in turn, is installed in the ground. The frame is controllably driven in a predetermined way by a light-weight drive system so as to be angularly adjustable in both elevation and azimuth to track the sun and efficiently continuously reflect the sun's rays to a focal zone, i.e. central receiver, which forms part of a solar energy utilization system, such as a solar energy fueled electrical power generation system. The frame may include a built-in system for testing for optical flatness of the reflector. The preferable geometric configuration of the reflector is octagonal; however, it may be other shapes, such as hexagonal, pentagonal or square. Several different embodiments of means for tensioning and positioning the reflector to achieve optical flatness are disclosed. The reflector assembly is based on the stretch frame concept which provides an extremely light-weight, simple, low-cost reflector assembly that may be driven for positioning and tracking by a light-weight, inexpensive drive system.

  13. Running head: GUIDING ATTENTION ON PHYSICS PROBLEMS 1 Guiding Attention on Physics Problems Using Visual Cues Modeled After Experts' Eye

    E-Print Network [OSTI]

    Zollman, Dean

    Visual Cues Modeled After Experts' Eye Movements Adrian Madsen, Adam Larson, Amy Rouinfar, Allison Coy by recording their eye movements. In Study 1, we record eye movements of introductory and graduate physics in visual attention. We use the eye movements of those who answer these questions correctly to design visual

  14. Productivity increases in science

    SciTech Connect (OSTI)

    Danko, J.E. [ed.; Young, J.K.; Molton, P.M.; Dirks, J.A.

    1993-02-01T23:59:59.000Z

    The study quantifies the impact on the cost of experimentation of synergistic advancements in instrumentation, theory, and computation over the last two decades. The study finds that the productivity of experimental investigation (experimental results/$) is increasing as science is transformed from a linear, isolated approach to a hierarchical, multidisciplinary approach. Developments such as massively parallel processors coupled with instrumental systems with multiple probes and diverse data analysis capabilities will further this transformation and increase the productivity of scientific studies. The complexities and scale of today`s scientific challenges are much greater than in the past, however, so that the costs of research are increasing. Even though science is much more productive in terms of the experimental results, the challenges facing scientific investigators are increasing at an even faster pace. New approaches to infrastructure investments must capitalize on the changing dynamics of research and allow the scientific community to maximize gains in productivity so that complex problems can be attacked cost-effectively. Research strategies that include user facilities and coordinated experimental, computational, and theoretical research are needed.

  15. Productivity increases in science

    SciTech Connect (OSTI)

    Danko, J.E. (ed.); Young, J.K.; Molton, P.M.; Dirks, J.A.

    1993-02-01T23:59:59.000Z

    The study quantifies the impact on the cost of experimentation of synergistic advancements in instrumentation, theory, and computation over the last two decades. The study finds that the productivity of experimental investigation (experimental results/$) is increasing as science is transformed from a linear, isolated approach to a hierarchical, multidisciplinary approach. Developments such as massively parallel processors coupled with instrumental systems with multiple probes and diverse data analysis capabilities will further this transformation and increase the productivity of scientific studies. The complexities and scale of today's scientific challenges are much greater than in the past, however, so that the costs of research are increasing. Even though science is much more productive in terms of the experimental results, the challenges facing scientific investigators are increasing at an even faster pace. New approaches to infrastructure investments must capitalize on the changing dynamics of research and allow the scientific community to maximize gains in productivity so that complex problems can be attacked cost-effectively. Research strategies that include user facilities and coordinated experimental, computational, and theoretical research are needed.

  16. Dynamic Modeling of Combustion and Gas Exchange Processes for Controlled Auto-Ignition Engines

    E-Print Network [OSTI]

    Cambridge, University of

    ), also known as Homo- geneous Charge Compression Ignition (HCCI) has been receiving increased attention

  17. The performance analysis of linux networking - packet receiving

    SciTech Connect (OSTI)

    Wu, Wenji; Crawford, Matt; Bowden, Mark; /Fermilab; ,

    2006-11-01T23:59:59.000Z

    The computing models for High-Energy Physics experiments are becoming ever more globally distributed and grid-based, both for technical reasons (e.g., to place computational and data resources near each other and the demand) and for strategic reasons (e.g., to leverage equipment investments). To support such computing models, the network and end systems, computing and storage, face unprecedented challenges. One of the biggest challenges is to transfer scientific data sets--now in the multi-petabyte (10{sup 15} bytes) range and expected to grow to exabytes within a decade--reliably and efficiently among facilities and computation centers scattered around the world. Both the network and end systems should be able to provide the capabilities to support high bandwidth, sustained, end-to-end data transmission. Recent trends in technology are showing that although the raw transmission speeds used in networks are increasing rapidly, the rate of advancement of microprocessor technology has slowed down. Therefore, network protocol-processing overheads have risen sharply in comparison with the time spent in packet transmission, resulting in degraded throughput for networked applications. More and more, it is the network end system, instead of the network, that is responsible for degraded performance of network applications. In this paper, the Linux system's packet receive process is studied from NIC to application. We develop a mathematical model to characterize the Linux packet receiving process. Key factors that affect Linux systems network performance are analyzed.

  18. The nested assembly of collective attention in online social systems

    E-Print Network [OSTI]

    Borge-Holthoefer, Javier; Gracia-Lázaro, Carlos; Moreno, Yamir

    2015-01-01T23:59:59.000Z

    Online social networks have changed the way in which we communicate. These networks are characterized by a competitive information flow and a dynamic topology, where the success of a given topic or meme depends on many factors, most of which are unknown. Likely, given the many sources of information to which a typical individual is exposed, the economy of attention rules the system dynamics. Here we show, using microblogging data, that competition is minimized through consensus and that collective attention and successful topical assembly are characterized by a nested structure of the bipartite network made up by users and memes. Our results indicate that social phenomena could emerge as a result of a topological transition that minimizes modularity while maximizing the nestedness of the system, and that online social networks are comparable to an ecosystem, where generalists and specialists share resources.

  19. Disk Quota Increase Request

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisitingContract ManagementDiscovering How Muscles Really Work Disk Quota Increase

  20. Residential propane prices increase

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Year-0E (2001) -heating oil pricepropanepropane prices increase The

  1. Residential propane prices increase

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Year-0E (2001) -heating oil pricepropanepropane prices increase

  2. Managing Increased Charging Demand

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment ofLetterEconomyDr.Energy University Managing Increased Charging

  3. Increasing Employee PEV Awareness

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(Fact Sheet),EnergyImprovement of theResponses to Public Increasing Employee

  4. Charles "Chuck" Farrar to receive DeMichele Award

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

    Farrar to receive DeMichele Award Charles "Chuck" Farrar to receive DeMichele Award The award is presented for demonstrated "exemplary service and support of promoting the science...

  5. High-Efficiency Receivers for Supercritical Carbon Dioxide Cycles...

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

    Receivers for Supercritical Carbon Dioxide Cycles - FY12 Q4 High-Efficiency Receivers for Supercritical Carbon Dioxide Cycles - FY12 Q4 This document summarizes the progress of...

  6. STEAM RECEIVER MODELS FOR SOLAR DISH CONCENTRATORS: TWO MODELS COMPARED

    E-Print Network [OSTI]

    response of a parabolic dish steam cavity receiver. Both approaches are based on a heat transfer model

  7. NEJC Board Member Receives 2015 National Planning Excellence Award

    Broader source: Energy.gov [DOE]

    National Environmental Justice Conference, Inc. Board of Directors Member Receives American Planning Association 2015 National Planning Excellence Award

  8. Estimation of Convection Loss from Paraboloidal Dish Cavity Receivers

    E-Print Network [OSTI]

    In general, cavity receivers employed in the sun-tracking paraboloidal dish concentrator are subjected the numerical investigation of natural and combined convection loss from cavity receivers employed in solar is a significant source of energy loss from thermal receivers used with dish solar concentrators. This paper

  9. Advanced Thermal Storage for Central Receivers with Supercritical Coolants

    SciTech Connect (OSTI)

    Kelly, Bruce D.

    2010-06-15T23:59:59.000Z

    The principal objective of the study is to determine if supercritical heat transport fluids in a central receiver power plant, in combination with ceramic thermocline storage systems, offer a reduction in levelized energy cost over a baseline nitrate salt concept. The baseline concept uses a nitrate salt receiver, two-tank (hot and cold) nitrate salt thermal storage, and a subcritical Rankine cycle. A total of 6 plant designs were analyzed, as follows: Plant Designation Receiver Fluid Thermal Storage Rankine Cycle Subcritical nitrate salt Nitrate salt Two tank nitrate salt Subcritical Supercritical nitrate salt Nitrate salt Two tank nitrate salt Supercritical Low temperature H2O Supercritical H2O Two tank nitrate salt Supercritical High temperature H2O Supercritical H2O Packed bed thermocline Supercritical Low temperature CO2 Supercritical CO2 Two tank nitrate salt Supercritical High temperature CO2 Supercritical CO2 Packed bed thermocline Supercritical Several conclusions have been drawn from the results of the study, as follows: 1) The use of supercritical H2O as the heat transport fluid in a packed bed thermocline is likely not a practical approach. The specific heat of the fluid is a strong function of the temperatures at values near 400 °C, and the temperature profile in the bed during a charging cycle is markedly different than the profile during a discharging cycle. 2) The use of supercritical CO2 as the heat transport fluid in a packed bed thermocline is judged to be technically feasible. Nonetheless, the high operating pressures for the supercritical fluid require the use of pressure vessels to contain the storage inventory. The unit cost of the two-tank nitrate salt system is approximately $24/kWht, while the unit cost of the high pressure thermocline system is nominally 10 times as high. 3) For the supercritical fluids, the outer crown temperatures of the receiver tubes are in the range of 700 to 800 °C. At temperatures of 700 °C and above, intermetallic compounds can precipitate between, and within, the grains of nickel alloys. The precipitation leads to an increase in tensile strength, and a decrease in ductility. Whether the proposed tube materials can provide the required low cycle fatigue life for the supercritical H2O and CO2 receivers is an open question. 4) A ranking of the plants, in descending order of technical and economic feasibility, is as follows: i) Supercritical nitrate salt and baseline nitrate salt: equal ratings ii) Low temperature supercritical H2O iii) Low temperature supercritical CO2 iv) High temperature supercritical CO2 v) High temperature supercritical H2O 5) The two-tank nitrate salt thermal storage systems are strongly preferred over the thermocline systems using supercritical heat transport fluids.

  10. Effect of distracting faces on visual selective attention in the monkey

    E-Print Network [OSTI]

    Landman, Rogier

    In primates, visual stimuli with social and emotional content tend to attract attention. Attention might be captured through rapid, automatic, subcortical processing or guided by slower, more voluntary cortical processing. ...

  11. Retinotopic Organization of Early Visual Spatial Attention Effects as Revealed by PET and ERPs

    E-Print Network [OSTI]

    Retinotopic Organization of Early Visual Spatial Attention Effects as Revealed by PET and ERPs M: Cerebral blood flow PET scans and high-density event-related potentials (ERPs) were recorded (separate of attention. In PET scans, active attention vs. passive showed strong activation in the contralateral dorsal

  12. Radio frequency circuits for wireless receiver front-ends

    E-Print Network [OSTI]

    Xin, Chunyu

    2005-11-01T23:59:59.000Z

    . . . . . . . . 69 2. Implementation of the Down-Conversion Mixer . . . . 69 3. Layout Considerations and Simulation Results . . . . 74 4. Experimental Results of the Mixer Within the Receiver 77 IV BLUETOOTH/WI-FI DUAL-STANDARD RECEIVER RF FRONT...-END : : : : : : : : : : : : : : : : : : : : : : : : : : : : 80 A. Direct Conversion Bluetooth/Wi-Fi Dual-Standard Receiver 81 B. RF Front-End Design Considerations . . . . . . . . . . . . 83 C. Circuits Implementations . . . . . . . . . . . . . . . . . . . 86 1. LNA Implementation...

  13. ORISE: ORAU receives DOE Small Business Award for work under...

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

    ORAU receives DOE Small Business Award for work under ORISE contract Pictured above (L-R) are Heidi Timmerman, director of Procurement and Contracts Administration; Rebecca Crowe,...

  14. DOE's Jefferson Lab Receives Approval To Start Construction of...

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

    DOE's Jefferson Lab Receives Approval To Start Construction of 310 Million Upgrade NEWPORT NEWS, Va., Sept. 15, 2008 - The U.S. Department of Energy's Thomas Jefferson National...

  15. "BEST training, related to science, that I have ever received"

    E-Print Network [OSTI]

    Minnesota, University of

    "BEST training, related to science, that I have ever received" - Quote from a Dragonfly Workshop digital nature photography to state education standards ­ A technology training certificate to submit

  16. Two Los Alamos National Laboratory organizations receive Performance...

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

    Laboratory organizations receive Performance Excellence recognition from Quality New Mexico Nuclear Material Control and Accountability Group and the Quality and Performance...

  17. Seventy-three New Mexico students receive Los Alamos Employees...

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

    Employees' Scholarship Fund (LAESF). Fasano is one of 73 students from seven Northern New Mexico counties receiving LAESF scholarships, which are funded through pledges from Los...

  18. High-Efficiency Receivers for Supercritical Carbon Dioxide Cycles

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

    application to demonstrate the full receiver system performance * Absorber architecture defined capable of (a) withstanding cycle pressures and (b) maintaining acceptable...

  19. A HIGH TEMPERATURE GAS RECEIVER UTILIZING SMALL PARTICLES

    E-Print Network [OSTI]

    Hunt, Arlon

    2012-01-01T23:59:59.000Z

    organized by the Solar Thermal Test Facilities UsersMexico, Organized by the Solar Thermal Test Facilities Usersdevelop a new type of solar thermal receiver that utilizes a

  20. Sandia Energy - JBEI Research Receives Strong Industry Interest...

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

    Research Receives Strong Industry Interest in DOE Technology Transfer Call Home Renewable Energy Energy Biofuels Facilities Partnership JBEI News News & Events Research &...

  1. Y-12 Steam Plant Project Received National Recognition for Project...

    National Nuclear Security Administration (NNSA)

    Steam Plant Project Received National Recognition for Project Management Excellence | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission...

  2. allograft recipients receiving: Topics by E-print Network

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

    HOW YOUR FINANCIAL NEED WAS DETERMINED The Financial Aid Notice Students receiving University funding will have a financial aid notice Budget Your basic cost of attendance...

  3. Support and maneuvering apparatus for solar energy receivers

    DOE Patents [OSTI]

    Murphy, Lawrence M. (Littleton, CO)

    1989-01-01T23:59:59.000Z

    A support and maneuvering apparatus is disclosed for a solar energy receiving device adpated for receiving and concentrating solar energy and having a central axis extending through the center thereof. The apparatus includes a frame for mounting the perimeter of said solar energy receiving device. A support member extends along the central axis of the receiving device and has a base end passing through the center of the receiving device and an outer distal end adapted for carrying a solar energy receiving and conversion mechanism. A variable tension mechanism interconnects the support member with the frame to provide stiffening for the support member and the frame and to assist in the alignment of the frame to optimize the optical efficiency of the solar energy receiving device. A rotatable base is provided, and connecting members extend from the base for pivotable attachment to the frame at spaced positions therealong. Finally, an elevation assembly is connected to the receiving device for selectively pivoting the receiving device about an axis defined between the attachment positions of the connecting members on the frame.

  4. absorption solar receiver: Topics by E-print Network

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

    which exhibit a broadband absorption enhancement over 2 An Air-Based Cavity-Receiver for Solar Trough Concentrators Roman Bader Renewable Energy Websites Summary: for a heat...

  5. Support and maneuvering apparatus for solar energy receivers

    DOE Patents [OSTI]

    Murphy, L.M.

    1988-07-28T23:59:59.000Z

    A support and maneuvering apparatus is disclosed for a solar energy receiving device adapted for receiving and concentrating solar energy and having a central axis extending through the center thereof. The apparatus includes a frame for mounting the perimeter of said solar energy receiving device. A support member extends along the central axis of the receiving device and has a base end passing through the center of the receiving device and an outer distal end adapted for carrying a solar energy receiving and conversion mechanism. A variable tension mechanism interconnects the support member with the frame to provide stiffening for the support member and the frame and to assist in the alignment of the frame to optimize the optical efficiency of the solar energy receiving device. A rotatable base is provided, and connecting members extend from the base for pivotable attachment to the frame at spaced positions therealong. Finally, an elevation assembly is connected to the receiving device for selectively pivoting the receiving about an axis defined between the attachment positions of the connecting members on the frame. 4 figs.

  6. Drell receives National Medal of Science | National Nuclear Security...

    National Nuclear Security Administration (NNSA)

    Drell receives National Medal of Science | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile Preventing...

  7. Optimization of Multiple Receivers Solar Power Tower systems

    E-Print Network [OSTI]

    Emilio Carrizosa

    2015-03-26T23:59:59.000Z

    Mar 26, 2015 ... Abstract: In this article a new procedure to optimize the design of a Multiple Receivers Solar Power Tower system is presented. The proposed ...

  8. NNSA project receives DOE Secretary's Award for Project Management...

    National Nuclear Security Administration (NNSA)

    project receives DOE Secretary's Award for Project Management Improvement | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the...

  9. Curran receives SAE Foundation industry leadership award | ornl...

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

    at the Department of Energy's Oak Ridge National Laboratory, has received the Society for Automotive Engineers (SAE) Foundation's 2015 Stefan Pischinger Young Industry Leadership...

  10. Analysis and design of CMOS ultra wideband receivers

    E-Print Network [OSTI]

    Ranjan, Mahim

    2006-01-01T23:59:59.000Z

    C. Direct Conversion Receiver . . . . . . . . . . D.second-order distortion issues in direct conversion MB- OFDMapproximation. III.1 III.2 III.3 A typical direct conversion

  11. SoftCast: One Video to Serve All Wireless Receivers

    E-Print Network [OSTI]

    Katabi, Dina

    2009-02-07T23:59:59.000Z

    The main challenge in wireless video multicast is to scalably serve multiple receivers who have different channel characteristics. Current wireless transmission schemes, however, cannot support smooth degradation. Specifically, ...

  12. Waste receiving and processing facility module 1 auditable safetyanalysis

    SciTech Connect (OSTI)

    Bottenus, R.J.

    1997-02-01T23:59:59.000Z

    The Waste Receiving and Processing Facility Module 1 Auditable Safety Analysis analyzes postulated accidents and determines controls to prevent the accidents or mitigate the consequences.

  13. Advanced Low-Cost Receivers for Parabolic Troughs

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

    receivers. Some of these drawbacks include expensive and technologically intensive absorption coatings, a 1%-5% annual failure rate for tubes due to vacuum degradation, and...

  14. Department of Energy Receives 2013 Partners in Conservation Award...

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

    The Department of Energy (DOE), along with its partners the Bureau of Ocean Energy Management (BOEM) and the National Oceanic and Atmospheric Administration (NOAA), received the...

  15. Increased

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn Other News Community Connections:HAZARD ANALYSES OF GLINT

  16. Qualification test for the flexible receiver. Revision 2

    SciTech Connect (OSTI)

    Tedeschi, D.J.

    1994-12-12T23:59:59.000Z

    This document provides the test plan and procedures to certify and design verify the 42{double_prime} and 4{double_prime}-6{double_prime} Flexible Receiver as a safety class 3 system. The Flexible Receiver will be used by projects W-151 and W-320 for removing equipment from tanks C-106 and AZ-101.

  17. A New Compact Multichannel Receiver for Underwater Wireless Communication Networks

    E-Print Network [OSTI]

    Abdi, Ali

    size of the proposed receiver makes it particularly useful for small unmanned underwater vehicles1 A New Compact Multichannel Receiver for Underwater Wireless Communication Networks Ali Abdi of the particle velocity, in addition to the pressure, multichannel reception can be accomplished in underwater

  18. Ultra-Low Power Time Synchronization Using Passive Radio Receivers

    E-Print Network [OSTI]

    Amir, Yair

    Ultra-Low Power Time Synchronization Using Passive Radio Receivers Yin Chen Qiang Wang Marcus Chang. In this pa- per, we present an inexpensive and ultra-low power ( of elapsed seconds. The universal time sig- nal receiver combines an off-the-shelf radio chip with an ultra-low

  19. Remote Control and Receiver-Transceiver Specifications and

    E-Print Network [OSTI]

    Rajamani, Sriram K.

    Remote Control and Receiver- Transceiver Specifications and Requirements for Windows Media Center hardware vendors (IHVs) and PC OEM partners who want to create remote control and receiver device combinations that decode input from the remote control for Windows Media Center. This document provides details

  20. Interference mitigation techniques for SAW-less CDMA receivers

    E-Print Network [OSTI]

    Khatri, Himanshu

    2009-01-01T23:59:59.000Z

    RF front-end IC for a direct-conversion wireless receiver,”noise for low- power direct-conversion receiver,” IEEE J.A 72-mW CMOS 802.11a direct conversion front-end with 3.5-dB

  1. Artificial Intersymbol Interference (ISI) to Exploit Receiver Imperfections for Secrecy

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Artificial Intersymbol Interference (ISI) to Exploit Receiver Imperfections for Secrecy Azadeh intentional intersymbol inter- ference (ISI). The legitimate receiver uses the key to cancel the ISI while the eavesdropper, since it does not have the key, cannot do such. It is shown that although ISI reduces

  2. Radio-transparent multi-layer insulation for radiowave receivers

    SciTech Connect (OSTI)

    Choi, J. [Korea University, Anam-dong Seongbuk-gu, Seoul 136-713 (Korea, Republic of)] [Korea University, Anam-dong Seongbuk-gu, Seoul 136-713 (Korea, Republic of); Ishitsuka, H. [Department of Particle and Nuclear Physics, School of High Energy Accelerator Science, The Graduate University for Advanced Studies (SOKENDAI), Shonan Village, Hayama, Kanagawa 240-0193 (Japan)] [Department of Particle and Nuclear Physics, School of High Energy Accelerator Science, The Graduate University for Advanced Studies (SOKENDAI), Shonan Village, Hayama, Kanagawa 240-0193 (Japan); Mima, S. [Terahertz Sensing and Imaging Team, Terahertz-wave Research Group, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)] [Terahertz Sensing and Imaging Team, Terahertz-wave Research Group, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan); Oguri, S., E-mail: shugo@post.kek.jp [Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Oho, Tsukuba, Ibaraki 305-0801 (Japan); Takahashi, K. [Terahertz Sensing and Imaging Team, Terahertz-wave Research Group, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan) [Terahertz Sensing and Imaging Team, Terahertz-wave Research Group, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan); Department of Physics, Tohoku University, Sendai, Miyagi 980-8578 (Japan); Tajima, O. [Department of Particle and Nuclear Physics, School of High Energy Accelerator Science, The Graduate University for Advanced Studies (SOKENDAI), Shonan Village, Hayama, Kanagawa 240-0193 (Japan) [Department of Particle and Nuclear Physics, School of High Energy Accelerator Science, The Graduate University for Advanced Studies (SOKENDAI), Shonan Village, Hayama, Kanagawa 240-0193 (Japan); Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Oho, Tsukuba, Ibaraki 305-0801 (Japan)

    2013-11-15T23:59:59.000Z

    In the field of radiowave detection, enlarging the receiver aperture to enhance the amount of light detected is essential for greater scientific achievements. One challenge in using radio transmittable apertures is keeping the detectors cool. This is because transparency to thermal radiation above the radio frequency range increases the thermal load. In shielding from thermal radiation, a general strategy is to install thermal filters in the light path between aperture and detectors. However, there is difficulty in fabricating metal mesh filters of large diameters. It is also difficult to maintain large diameter absorptive-type filters in cold because of their limited thermal conductance. A technology that maintains cold conditions while allowing larger apertures has been long-awaited. We propose radio-transparent multi-layer insulation (RT-MLI) composed from a set of stacked insulating layers. The insulator is transparent to radio frequencies, but not transparent to infrared radiation. The basic idea for cooling is similar to conventional multi-layer insulation. It leads to a reduction in thermal radiation while maintaining a uniform surface temperature. The advantage of this technique over other filter types is that no thermal links are required. As insulator material, we used foamed polystyrene; its low index of refraction makes an anti-reflection coating unnecessary. We measured the basic performance of RT-MLI to confirm that thermal loads are lowered with more layers. We also confirmed that our RT-MLI has high transmittance to radiowaves, but blocks infrared radiation. For example, RT-MLI with 12 layers has a transmittance greater than 95% (lower than 1%) below 200 GHz (above 4 THz). We demonstrated its effects in a system with absorptive-type filters, where aperture diameters were 200 mm. Low temperatures were successfully maintained for the filters. We conclude that this technology significantly enhances the cooling of radiowave receivers, and is particularly suitable for large-aperture systems. This technology is expected to be applicable to various fields, including radio astronomy, geo-environmental assessment, and radar systems.

  3. Hybrid sodium heat pipe receivers for dish/Stirling systems

    SciTech Connect (OSTI)

    Laing, D.; Reusch, M. [Deutsche Forschungsanstalt fuer Luft- und Raumfahrt e.V., Stuttgart (Germany). Inst. fuer Technische Thermodynamik

    1997-12-31T23:59:59.000Z

    The design of a hybrid solar/gas heat pipe receiver for the SBP 9 kW dish/Stirling system using a United Stirling AB V160 Stirling engine and the results of on-sun testing in alternative and parallel mode will be reported. The receiver is designed to transfer a thermal power of 35 kW. The heat pipe operates at around 800 C, working fluid is sodium. Operational options are solar-only, gas augmented and gas-only mode. Also the design of a second generation hybrid heat pipe receiver currently developed under a EU-funded project, based on the experience gained with the first hybrid receiver, will be reported. This receiver is designed for the improved SPB/L. and C.-10 kW dish/Stirling system with the reworked SOLO V161 Stirling engine.

  4. Structural analysis of a reflux pool-boiler solar receiver

    SciTech Connect (OSTI)

    Hoffman, E.L.; Stone, C.M.

    1991-06-01T23:59:59.000Z

    Coupled thermal-structural finite element calculations of a reflux pool-boiler solar receiver were performed to characterize the operating stresses and to address issues affecting the service life of the receiver. Analyses performed using shell elements provided information for receiver material selection and design optimization. Calculations based on linear elastic fracture mechanics principles were performed using continuum elements to assess the vulnerability of a seam-weld to fatigue crack growth. All calculations were performed using ABAQUS, a general purpose finite element code, and elements specifically formulated for coupled thermal-structural analysis. Two materials were evaluated: 316L SS and Haynes 230 alloys. The receiver response was simulated for a combination of structural and thermal loads that represent the startup and operating conditions of the receiver. For both materials, maximum stresses in the receiver developed shortly after startup due to uneven temperature distribution across the receiver surface. The largest effective stress was near yield in the 316L SS receiver and below 39 percent of yield in the Haynes 230 receiver. The calculations demonstrated that stress reductions of over 25 percent could be obtained by reducing the aft dome thickness to one closer to the absorber. The fatigue calculations demonstrated that the stress distribution near the seam-weld notch depends primarily on the structural load created by internal pressurization of the receiver rather than the thermal, indicating that the thermal loads can be neglected when assessing the stress intensity near the seam-weld notch. The stress intensity factor, computed using the J-integral method and crack opening-displacement field equations, was significantly below the fatigue threshold for most steels. The calculations indicated that the weld notch was always loaded in compression, a condition which is not conducive to fatigue crack growth. 15 refs., 30 figs., 3 tabs.

  5. A universal low-noise analog receiver baseband in 65-nm CMOS

    E-Print Network [OSTI]

    Tekin, Ahmet; Elwan, Hassan; Pedrotti, Kenneth

    2010-01-01T23:59:59.000Z

    P. , et al. (2005). A direct- conversion receiver for DVB-analog design for direct conversion receiver. In Proceedingsof the wide-band direct conversion receiver including the

  6. Paying Attention to the Man behind the Curtain

    E-Print Network [OSTI]

    Cummings, M. L.

    In the push to develop smart energy systems, designers have increasingly focused on systems that measure and predict user behavior to effect optimal energy consumption. While such focus is an important component in these ...

  7. Trends in dish-Stirling solar receiver designs

    SciTech Connect (OSTI)

    Diver, R.B.; Andraka, C.E.; Moreno, J.B.; Adkins, D.R.; Moss, T.A.

    1990-01-01T23:59:59.000Z

    The dish-Stirling solar energy system, because of its high efficiency, is a leading candidate for producing low-cost electric power from the sun. Dish-Stirling receiver design involves dealing with non-uniform and highly concentrated solar flux at high temperatures (700--800{degree}C) and, therefore, presents a variety of technical challenges. The technology is in the process of evolving from directly illuminated heater-head tube receivers'' to receivers that use refluxing (i.e., gravity assisted) liquid metals as an intermediate heat transfer fluid. Modern dish-Stirling development was initiated in the late 1970s by the Jet Propulsion Laboratory for the Department of Energy. The JPL technology development with United Stirling, Inc. involved the USAB 4.95 Stirling engine and directly illuminated heater-head tube receivers. This work eventually led to the successful demonstrations and world record efficiencies by Advanco Corp., and to the attempted commercialization of the technology by McDonnell Douglas Corp. The severe nature of concentrated solar flux and the potential advantages of heat-pipe technology have caused an evolution toward reflux'' receivers. These receivers are just beginning to be tested in the laboratory and integrated with dish-Stirling systems. In this paper, the history and current status of dish-Stirling receiver development are presented and discussed. The technical challenges to be addressed by the dish-Stirling community and the future plans at Sandia are outlined. 52 refs., 9 figs.

  8. LNG imports make strong recovery in 1996; exports increase also

    SciTech Connect (OSTI)

    Swain, E.J. [Swain (Edward J.), Houston, TX (United States)

    1998-01-19T23:59:59.000Z

    LNG imports to the US jumped in 1996 as Algerian base-load plants resumed operations following major revamps. Exports from Alaska to Japan grew by nearly 4% over 1995. Total LNG imports to the US in 1996 were 40.27 bcf compared to 17.92 bcf in 1995, an increase of 124.8%. Algeria supplied 35.32 bcf; Abu Dhabi, 4.95 bcf. About 82.3% of the imported LNG was received at Distrigas Corp.`s terminal north of Boston. The remaining LNG was received at the Pan National terminal in Lake Charles, LA. LNG imports during 1995 fell to such a low level not because of depressed US demand but because of limited supply. The paper discusses LNG-receiving terminals, base-load producers, LNG pricing, and exports.

  9. Boiling behavior of sodium-potassium alloy in a bench-scale solar receiver

    SciTech Connect (OSTI)

    Moreno, J.B.; Andraka, C.E.; Moss, T.A.

    1992-01-01T23:59:59.000Z

    During 1989-90, a 75-kW{sub t} sodium reflux pool-boiler solar receiver was successfully demonstrated at Sandia National Laboratories. Significant features of this receiver include (1) boiling sodium as the heat transfer medium and (2) electric-discharge-machined (EDM) cavities as artificial nucleation sites to stabilize boiling. Since this first demonstration, design of a second-generation pool-boiler receiver that will bring the concept closer to commercialization has begun. For long life, the new receiver uses Haynes Alloy 230. For increased safety factors against film boiling and flooding, it has a refined shape and somewhat larger dimensions. To eliminate the need for trace heating, the receiver will boil the sodium-potassium alloy NaK-78 instead of sodium. To reduce manufacturing costs, it will use one of a number of alternatives to EDM cavities for stabilization of boiling. To control incipient-boiling superheats, especially during hot restarts, it will contain a small amount of inert gas. Before the new receiver design could be finalized, bench-scale tests of some of the proposed changes were necessary. A series of bench-scale pool boilers were built from Haynes Alloy 230 and filled with NaK-78. Various boiling-stabilizer candidates were incorporated into them, including laser-drilled cavities and a number of different sintered-powder-metal coatings. These bench-scale pool boilers have been operated at temperatures up to 750{degree}C, heated by quartz lamps with incident radiant fluxes up to 95 W/cm{sup 2}. The effects of various orientations and added gases have been studied. results of these studies are presented. 15 refs.

  10. Applications Received by DOE/FE to Export Domestically Produced...

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

    Applications Received by DOEFE to Export Domestically Produced LNG from the Lower-48 States (as of March 5, 2014) All Changes Since February 11, 2014 Update Are In Red 1 Company...

  11. Long Term Applications Received by DOE/FE to Export

    Energy Savers [EERE]

    Long Term Applications Received by DOEFE to Export Domestically Produced LNG from the Lower-48 States (as of March 3, 2015) All Changes Since February 25, 2015 Update Are In Red 1...

  12. Long Term*** Applications Received by DOE/FE to Export

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

    Long Term*** Applications Received by DOEFE to Export Domestically Produced LNG from the Lower-48 States (as of June 11, 2014) All Changes Since April 18, 2014 Update Are In Red 1...

  13. Advanced Low-Cost Receivers for Parabolic Troughs (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-09-01T23:59:59.000Z

    Norwich Technologies is one of the 2012 SunShot CSP R&D awardees for their advanced receivers. This fact sheet explains the motivation, description, and impact of the project.

  14. High-Temperature Falling-Particle Receiver (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-09-01T23:59:59.000Z

    Sandia National Laboratories is one of the 2012 SunShot CSP R&D awardee for their advanced receivers. This fact sheet explains the motivation, description, and impact of the project.

  15. Argonne and Dept. of Energy receive EPA's Federal Green Challenge...

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

    Argonne and Dept. of Energy receive EPA's Federal Green Challenge Award May 15, 2014 Tweet EmailPrint Argonne National Laboratory and the U.S. Department of Energy (DOE) have been...

  16. Energy-Department Supported Scientist Receives Nobel Prize for...

    Office of Environmental Management (EM)

    to receive the Nobel Prize in Physics for their invention of the blue light emitting diode, a game-changer in the history of LED lights. | Photo courtesy of Soraa. Shuji...

  17. Argonne receives 2014 DOE Sustainability Award | Argonne National...

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

    receives 2014 DOE Sustainability Award By Diana Anderson * January 5, 2015 Tweet EmailPrint Argonne National Laboratory has been recognized with the 2014 U.S. Department of Energy...

  18. High-Efficiency Receivers for Supercritical Carbon Dioxide Cycles...

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

    high-efficiency solar receiver that is compatible with s-CO2 cycles and modern thermal storage subsystems. Supercritical CO2 Brayton-cycle engines have the potential to...

  19. High performance CMOS integrated circuits for optical receivers

    E-Print Network [OSTI]

    SamadiBoroujeni, MohammadReza

    2009-05-15T23:59:59.000Z

    Prasad Enjeti Head of Department, Costas Georghiades December 2006 Major Subject: Electrical Engineering iii ABSTRACT High Performance CMOS Integrated Circuits for Optical Receivers. (December 2006) MohammadReza SamadiBoroujeni, B...

  20. apprentice receives award: Topics by E-print Network

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

    19th of March. The L'Oral- UNESCO For Women in Science Awards, established by the world Takada, Shoji 11 Prof. T. Harinarayana, Director, GERMI received the "Energy and...

  1. Receiving Water Uses, Impairments, and Sources of Stormwater Pollutants

    E-Print Network [OSTI]

    Pitt, Robert E.

    CHAPTER 2 Receiving Water Uses, Impairments, and Sources of Stormwater Pollutants "Bathing) .........................................................................26 Recreation (Non-Water Contact) Uses...................................................................................26 Biological Uses (Warm-Water Fishery, Aquatic Life Use, Biological Integrity, etc.)..........27

  2. High-Flux Microchannel Solar Receiver (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-09-01T23:59:59.000Z

    Oregon State University is one of the 2012 SunShot CSP R&D awardees for their advanced receivers. This fact sheet explains the motivation, description, and impact of the project.

  3. RF CMOS UWB transmitter and receiver front-end design

    E-Print Network [OSTI]

    Miao, Meng

    2009-05-15T23:59:59.000Z

    The low-cost low-power complementary metal-oxide semiconductor (CMOS) ultra wideband (UWB) transmitter and receiver front-ends based on impulse technology were developed. The CMOS UWB pulse generator with frequency-band tuning capability...

  4. Long Term Applications Received by DOE/FE to Export

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

    Term Applications Received by DOEFE to Export Domestically Produced LNG from the Lower-48 States (as of April 14, 2015) All Changes Since March 26, 2015 Update Are In Red Company...

  5. Advanced Low-Cost Receivers for Parabolic Troughs

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

    Trough Receiver (NRELTP-550-45633): NREL, 2009. 2. Kutscher C, et al. Line-Focus Solar Power Plant Cost Reduction Plan: NREL Milestone Report, 2010. 3. Mahoney R. Trough...

  6. Particle Receiver Integrated with Fluidized Bed (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-09-01T23:59:59.000Z

    National Renewable Energy Laboratory is one of the 2012 SunShot CSP R&D awardees for their advanced receivers. This fact sheet explains the motivation, description, and impact of the project.

  7. DESIGN OF A MICROCHANNEL BASED SOLAR RECEIVER/REACTOR FOR

    E-Print Network [OSTI]

    Apte, Sourabh V.

    for production of hydrogen. A cou- pled shape-constrained optimization and Monte-Carlo radiative heat transfer model is developed to design a receiver shape that can yield a desired heat flux distribution

  8. Multi-band OFDM UWB receiver with narrowband interference suppression 

    E-Print Network [OSTI]

    Kelleci, Burak

    2009-05-15T23:59:59.000Z

    A multi band orthogonal frequency division multiplexing (MB-OFDM) compatible ultra wideband (UWB) receiver with narrowband interference (NBI) suppression capability is presented. The average transmit power of UWB system ...

  9. A HIGH TEMPERATURE GAS RECEIVER UTILIZING SMALL PARTICLES

    E-Print Network [OSTI]

    Hunt, Arlon

    2012-01-01T23:59:59.000Z

    of Energy under Arlon Hunt, "A New Solar Thermal Receiversolar thermal receiver that utilizes a dispersion of very small particles susŁe2ded in a gas to absorb the radiant energy

  10. Administering truncated receive functions in a parallel messaging interface

    DOE Patents [OSTI]

    Archer, Charles J; Blocksome, Michael A; Ratterman, Joseph D; Smith, Brian E

    2014-12-09T23:59:59.000Z

    Administering truncated receive functions in a parallel messaging interface (`PMI`) of a parallel computer comprising a plurality of compute nodes coupled for data communications through the PMI and through a data communications network, including: sending, through the PMI on a source compute node, a quantity of data from the source compute node to a destination compute node; specifying, by an application on the destination compute node, a portion of the quantity of data to be received by the application on the destination compute node and a portion of the quantity of data to be discarded; receiving, by the PMI on the destination compute node, all of the quantity of data; providing, by the PMI on the destination compute node to the application on the destination compute node, only the portion of the quantity of data to be received by the application; and discarding, by the PMI on the destination compute node, the portion of the quantity of data to be discarded.

  11. Illuminating the role of cholinergic signaling in circuits of attention and emotionally salient behaviors

    E-Print Network [OSTI]

    Luchicchi, Antonio

    Acetylcholine (ACh) signaling underlies specific aspects of cognitive functions and behaviors, including attention, learning, memory and motivation. Alterations in ACh signaling are involved in the pathophysiology of ...

  12. Hybrid solar central receiver for combined cycle power plant

    DOE Patents [OSTI]

    Bharathan, Desikan (Lakewood, CO); Bohn, Mark S. (Golden, CO); Williams, Thomas A. (Arvada, CO)

    1995-01-01T23:59:59.000Z

    A hybrid combined cycle power plant including a solar central receiver for receiving solar radiation and converting it to thermal energy. The power plant includes a molten salt heat transfer medium for transferring the thermal energy to an air heater. The air heater uses the thermal energy to preheat the air from the compressor of the gas cycle. The exhaust gases from the gas cycle are directed to a steam turbine for additional energy production.

  13. Hybrid solar central receiver for combined cycle power plant

    DOE Patents [OSTI]

    Bharathan, D.; Bohn, M.S.; Williams, T.A.

    1995-05-23T23:59:59.000Z

    A hybrid combined cycle power plant is described including a solar central receiver for receiving solar radiation and converting it to thermal energy. The power plant includes a molten salt heat transfer medium for transferring the thermal energy to an air heater. The air heater uses the thermal energy to preheat the air from the compressor of the gas cycle. The exhaust gases from the gas cycle are directed to a steam turbine for additional energy production. 1 figure.

  14. A Digital-Receiver for the Murchison Widefield Array

    E-Print Network [OSTI]

    Prabu, Thiagaraj; Roshi, D Anish; Kamini, P A; Madhavi, S; Emrich, David; Crosse, Brian; Williams, Andrew J; Waterson, Mark; Deshpande, Avinash A; Shankar, N Udaya; Subrahmanyan, Ravi; Briggs, Frank H; Goeke, Robert F; Tingay, Steven J; Johnston-Hollitt, Melanie; R, Gopalakrishna M; Morgan, Edward H; Pathikulangara, Joseph; Bunton, John D; Hampson, Grant; Williams, Christopher; Ord, Stephen M; Wayth, Randall B; Kumar, Deepak; Morales, Miguel F; deSouza, Ludi; Kratzenberg, Eric; Pallot, D; McWhirter, Russell; Hazelton, Bryna J; Arcus, Wayne; Barnes, David G; Bernardi, Gianni; Booler, T; Bowman, Judd D; Cappallo, Roger J; Corey, Brian E; Greenhill, Lincoln J; Herne, David; Hewitt, Jacqueline N; Kaplan, David L; Kasper, Justin C; Kincaid, Barton B; Koenig, Ronald; Lonsdale, Colin J; Lynch, Mervyn J; Mitchell, Daniel A; Oberoi, Divya; Remillard, Ronald A; Rogers, Alan E; Salah, Joseph E; Sault, Robert J; Stevens, Jamie B; Tremblay, S E; Webster, Rachel L; Whitney, Alan R; Wyithe, Stuart B

    2015-01-01T23:59:59.000Z

    An FPGA-based digital-receiver has been developed for a low-frequency imaging radio interferometer, the Murchison Widefield Array (MWA). The MWA, located at the Murchison Radio-astronomy Observatory (MRO) in Western Australia, consists of 128 dual-polarized aperture-array elements (tiles) operating between 80 and 300\\,MHz, with a total processed bandwidth of 30.72 MHz for each polarization. Radio-frequency signals from the tiles are amplified and band limited using analog signal conditioning units; sampled and channelized by digital-receivers. The signals from eight tiles are processed by a single digital-receiver, thus requiring 16 digital-receivers for the MWA. The main function of the digital-receivers is to digitize the broad-band signals from each tile, channelize them to form the sky-band, and transport it through optical fibers to a centrally located correlator for further processing. The digital-receiver firmware also implements functions to measure the signal power, perform power equalization across ...

  15. Investigation of aerowindows for solar receivers. Final report

    SciTech Connect (OSTI)

    Not Available

    1984-05-04T23:59:59.000Z

    The use of aerowindows to improve the efficiency and operation of central solar receivers has been analyzed to determine the conditions under which such improvements are possible. The results have shown that the aerowindow solar receiver concept is both technically and economically viable. The energy balance in the solar receiver, with and without the aerowindow, has been estimated with conservative models of the flow and heat transfer. For receiver cavity wall temperatures in the range of 1000 to 1600 K, there is a large positive energy benefit to using the aerowindow. Effective use of the aerowindow probably will require the use of recirculated gases from the cavity to reduce mixing and heat transfer at the cavity gas/aerowindow interface. Aerowindow technology is available now from industrial air curtain technology used on open warehouse entrances with dimensions similar to the apertures of large solar receivers. The cost of these devices is modest in terms of the cost of the energy saved, with the result that the payback period under broad ranges of receiver sizes and operating conditions is 1 to 5 years, even for relatively low equivalent costs for the thermal power being saved.

  16. Structural Design Considerations for Tubular Power Tower Receivers Operating at 650 Degrees C: Preprint

    SciTech Connect (OSTI)

    Neises, T. W.; Wagner, M. J.; Gray, A. K.

    2014-04-01T23:59:59.000Z

    Research of advanced power cycles has shown supercritical carbon dioxide power cycles may have thermal efficiency benefits relative to steam cycles at temperatures around 500 - 700 degrees C. To realize these benefits for CSP, it is necessary to increase the maximum outlet temperature of current tower designs. Research at NREL is investigating a concept that uses high-pressure supercritical carbon dioxide as the heat transfer fluid to achieve a 650 degrees C receiver outlet temperature. At these operating conditions, creep becomes an important factor in the design of a tubular receiver and contemporary design assumptions for both solar and traditional boiler applications must be revisited and revised. This paper discusses lessons learned for high-pressure, high-temperature tubular receiver design. An analysis of a simplified receiver tube is discussed, and the results show the limiting stress mechanisms in the tube and the impact on the maximum allowable flux as design parameters vary. Results of this preliminary analysis indicate an underlying trade-off between tube thickness and the maximum allowable flux on the tube. Future work will expand the scope of design variables considered and attempt to optimize the design based on cost and performance metrics.

  17. South African Hake Sales Increase

    E-Print Network [OSTI]

    South African Hake Sales Increase The Capeto\\\\ n Traw ler Com pan) Inin and J ohn~on. i e\\port1l1g

  18. Attention design: Eight issues to consider Sharon Wood *, Richard Cox, Peter Cheng

    E-Print Network [OSTI]

    Cheng, Peter

    Attention design: Eight issues to consider Sharon Wood *, Richard Cox, Peter Cheng Representation and Cognition Group, Department of Informatics, University of Sussex, Falmer, BN1 9QH, United Kingdom Available for specific applica- tions. We present eight issues relevant to this endeavour: What is attention? How can

  19. Handbook on Computational Cognitive Modeling Chapter 16. Computational models of attention and cognitive control

    E-Print Network [OSTI]

    of attention is central to understanding how information is processed in cognitive systems. Modern cognitive and cognitive control Nicola De Pisapia, Grega Repovs, Todd S. Braver #12;2 1. INTRODUCTION The study modulation and attentional control. The chapter starts with a description of work that focuses on visual

  20. A SaliencyBased Search Mechanism for Overt and Covert Shifts of Visual Attention

    E-Print Network [OSTI]

    Koch, Christof

    be said to be ``attended'' if it enters short­term mem­ ory and remains there long enoughA Saliency­Based Search Mechanism for Overt and Covert Shifts of Visual Attention Laurent Itti models of visual search, whether involving overt eye movements or covert shifts of attention, are based

  1. Image-Based Localization of Vehicle Parts Guided by Visual Attention

    E-Print Network [OSTI]

    Payeur, Pierre

    , ppayeur]@eecs.uottawa.ca Abstract--The automated servicing of vehicles is becoming more and more a reality, vehicle parts localization, visual attention, image processing, automation. I. INTRODUCTIONImage-Based Localization of Vehicle Parts Guided by Visual Attention Ana-Maria Cretu and Pierre

  2. Memory Efficiency and the Strategic Control of Attention at Encoding: Impairments of Value-Directed Remembering

    E-Print Network [OSTI]

    Memory Efficiency and the Strategic Control of Attention at Encoding: Impairments of Value of the strategic control of attention and the efficient use of memory. To examine whether aging and Alzheimer), and mild AD (N 13) showed impairments in the strategic and efficient encoding and recall of high value

  3. Obesity Impact on the Attentional Cost for Controlling Jean-Baptiste Mignardot1,2

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Obesity Impact on the Attentional Cost for Controlling Posture Jean-Baptiste Mignardot1 Background: This study investigated the effects of obesity on attentional resources allocated to postural control in seating and unipedal standing. Methods: Ten non obese adults (BMI = 22.461.3, age = 42

  4. Turbo Receiver Design for Phase Noise Mitigation in OFDM Systems

    E-Print Network [OSTI]

    Sridharan, Gokul

    2010-01-01T23:59:59.000Z

    This paper addresses the issue of phase noise in OFDM systems. Phase noise (PHN) is a transceiver impairment resulting from the non-idealities of the local oscillator. We present a case for designing a turbo receiver for systems corrupted by phase noise by taking a closer look at the effects of the common phase error (CPE). Using an approximate probabilistic framework called variational inference (VI), we develop a soft-in soft-out (SISO) algorithm that generates posterior bit-level soft estimates while taking into account the effect of phase noise. The algorithm also provides an estimate of the phase noise sequence. Using this SISO algorithm, a turbo receiver is designed by passing soft information between the SISO detector and an outer forward error correcting (FEC) decoder that uses a soft decoding algorithm. It is shown that the turbo receiver achieves close to optimal performance.

  5. Testing of Stirling engine solar reflux heat-pipe receivers

    SciTech Connect (OSTI)

    Rawlinson, S.; Cordeiro, P.; Dudley, V.; Moss, T.

    1993-07-01T23:59:59.000Z

    Alkali metal heat-pipe receivers have been identified as a desirable interface to couple a Stirling-cycle engine with a parabolic dish solar concentrator. The reflux receiver provides power nearly isothermally to the engine heater heads while de-coupling the heater head design from the solar absorber surface design. The independent design of the receiver and engine heater head leads to high system efficiency. Heat pipe reflux receivers have been demonstrated at approximately 30 kW{sub t} power throughput by others. This size is suitable fm engine output powers up to 10 kW{sub e}. Several 25-kW{sub e}, Stirling-cycle engines exist, as well as designs for 75-kW{sub t} parabolic dish solar concentrators. The extension of heat pipe technology from 30 kW{sub t} to 75 kW{sub t} is not trivial. Heat pipe designs are pushed to their limits, and it is critical to understand the flux profiles expected from the dish, and the local performance of the wick structure. Sandia has developed instrumentation to monitor and control the operation of heat pipe reflux receivers to test their throughput limits, and analytical models to evaluate receiver designs. In the past 1.5 years, several heat pipe receivers have been tested on Sandia`s test bed concentrators (TBC`s) and 60-kW{sub t} solar furnace. A screen-wick heat pipe developed by Dynatherm was tested to 27.5 kW{sub t} throughput. A Cummins Power Generation (CPG)/Thermacore 30-kW{sub t} heat pipe was pushed to a throughput of 41 kW{sub t} to verify design models. A Sandia-design screen-wick and artery 75-kW{sub t} heat pipe and a CPG/Thermacore 75-kW{sub t} sintered-wick heat pipe were also limit tested on the TBC. This report reviews the design of these receivers, and compares test results with model predictions.

  6. Advanced Low-Cost Receivers for Parabolic Troughs

    Broader source: Energy.gov [DOE]

    This fact sheet describes an advanced, low-cost receiver project for parabolic troughs, awarded under the DOE's 2012 SunShot Concentrating Solar Power R&D award program. Norwich Technologies is designing a novel receiver that addresses these issues for parabolic trough concentrating solar power systems. This technology represents significant operational and cost advances in the most trusted and broadly implemented form of CSP and provides a viable pathway to achieving SunShot’s $0.06/kWh goal for utility-scale CSP systems.

  7. Factors Influencing the Prices Received for Texas Turkeys.

    E-Print Network [OSTI]

    Halpin, R. B.; Parnell, E. D.; Mountney, G. J.

    1954-01-01T23:59:59.000Z

    1952 300- 'j HENS 250 -Ae THANKSGIVING L 20 27 4 11 18 25 1 8 15 22 29 6 S E PT. OCT. N OV. DEC. i Figure 3. Average number of No. 1 live turkeys pu:. chased per transaction by sex by weeks, six plants, Texci 1951-52. I FALL MARKETING SEASON...Factors Influencing the Prices Received for Texas Turkeys TEXAS AGRICULTURAL EXPERIMENT STATION R. D. LEWIS. DIRECTOR, COLLEGE STATION. TEXAS DIGEST A study was conducted during 1950-53 of the factors influencing the market quality a1 received...

  8. Power generation considerations in a solar biomodal receiver

    SciTech Connect (OSTI)

    Rochow, R.F. [NovaTech, Lynchburg, VA (United States); Miles, B.J. [Babcock and Wilcox, Lynchburg, VA (United States)

    1996-12-31T23:59:59.000Z

    The Integrated Solar Upper Stage (ISUS), or solar bimodal stage provides both propulsive thrust for efficient orbital transfer(s) and electrical power generation for the spacecraft. The combined propulsive and power systems allow the solar bimodal system to effectively compete for a variety of missions. Once on station, thermionic converters are used to supply continuous electrical power to the satellite, even during periods when the spacecraft is in the Earth`s shadow. The key to continuous power supply is thermal energy storage. The ISUS propulsion system also benefits through the use of thermal storage. By utilizing a graphite receiver, large amounts of sensible heat can be stored for later power generation. Waste heat is radiated to space through the use of heat pipes. Clearly, the graphite mass must be minimized without sacrificing electrical power capability. Voltage and current characteristics are carefully designed to operate within acceptable ranges. The detailed design of the receiver/absorber/converter (RAC) power system must meet these requirements with as little impact to the remainder of the bimodal system as possible. This paper addresses the key design considerations of a solar bimodal receiver as a power plant. Factors including the thermal storage and heat transfer from the graphite receiver to the thermionic converters, the support structures, electrical insulation and converter string design will be discussed.

  9. Received 25 March 2002 Accepted 6 August 2002

    E-Print Network [OSTI]

    Received 25 March 2002 Accepted 6 August 2002 Published online 9 December 2002 Nuclear markers reveal unexpected genetic variation and a Congolese­Nilotic origin of the Lake Victoria cichlid species flock Ole Seehausen1,2* , Egbert Koetsier2 , Maria Victoria Schneider2 , Lauren J. Chapman3,4 , Colin A

  10. BLIND RECEIVERS FOR MISO COMMUNICATION SYSTEMS USING A NONLINEAR PRECODER

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    BLIND RECEIVERS FOR MISO COMMUNICATION SYSTEMS USING A NONLINEAR PRECODER Alain Y. Kibangou GIPSA.Kibangou@ujf-grenoble.fr ABSTRACT In this paper, we propose two blind decoding approaches for multi-input single-output (MISO of simulations. 1. INTRODUCTION Multi-input Single Output (MISO) communication channel modelling occurs when

  11. MODELLING OF CAVITY RECEIVER HEAT TRANSFER COMPACT LINEAR FRESNEL REFLECTOR

    E-Print Network [OSTI]

    . This approach allows an affordable entry into renewable energy for existing coal-power producers, and allows them to meet the mandatory renewable energy targets set by the government of New South Wales . (Hu et) linear absorbers, achieving higher ground area efficiency. · Receiver is an inverted, trapezoidal, linear

  12. DESIGN OF THE TRANSCONDUCTANCE AMPLIFIER FOR FREQUENCY DOMAIN SAMPLING RECEIVER

    E-Print Network [OSTI]

    Chen, XI

    2010-01-16T23:59:59.000Z

    -1. Introduction and motivation of the high resolution & high sampling rate ADC ........................................................................ 27 3-2. Specifications of the Gm stage ..................................................... 28... 3-3. Circuit design of the Gm stage ...................................................... 29 IV A DIFFERENTIAL NOISE CANCELLING LOW NOISE TRANSCONDUCTANCE AMPLIFIER FOR DRIVING THE FD RF COMMUNICATION RECEIVER...

  13. Received 11 January 2002 Accepted 1 March 2002

    E-Print Network [OSTI]

    Pratt, Stephen

    Received 11 January 2002 Accepted 1 March 2002 Published online 29 May 2002 Deciding on a new home, Bristol BS8 1UG, UK 5 Section of Neurobiology and Behavior, Cornell University, Ithaca, NY 14853, USA nectar sources, ants stub- bornly wasting energy on longer routes--can be adaptive in the long term

  14. Shipping and Receiving Dangerous Goods at Georgia Tech

    E-Print Network [OSTI]

    Shipping and Receiving Dangerous Goods at Georgia Tech Contacts: Biological Shipments: Shane://industry.gatech.edu/researchers/forms) GENERAL: The transportation of dangerous goods is regulated by a number of national and international of Dangerous Goods (Flash). PROCESS: 1) All shipments must have a Document Id number as well as a People

  15. top 3 winners receive one of the following

    E-Print Network [OSTI]

    Rock, Chris

    top 3 winners receive one of the following: · iPad® · GoPro® Camera · Mountain Bike TOP 20 AT THE COMMONS FOR THE REMAINDER OF THE SEMESTER! TOP THAT AT TEXAS TECH! Sauce It, Stack It, Slice It. Any Way Pizza Contest TOP THAT! CREATIVE PIZZA CONTEST ENTRY FORM JUDGING CRITERIA: Among all qualified entries

  16. Organizational Science Doctoral Student Receives NCA Honor By Lynn Roberson

    E-Print Network [OSTI]

    Kelly, Scott David

    Organizational Science Doctoral Student Receives NCA Honor By Lynn Roberson Communications Director College of Liberal Arts & Sciences UNC Charlotte Organizational Science Ph.D. student David Askay has Dr. Steven Rogelberg, director of organizational science at UNC Charlotte. "His research holds great

  17. A Wideband OOK Receiver for Wireless Capsule Yanping Zhou# 1

    E-Print Network [OSTI]

    Nam, Sangwook

    . The storage capacitor of the envelope detector is optimized to obtain good sensitivity and high data rate receiver has simple structure, it can be implemented with a small chip size. Traditional super- heterodyne) and demodulator. Usually off-chip resistors and capacitors are necessary for the loop filter in the PLL. The OOK

  18. Electrical and Computer Engineering Professor Sanjay Krishna Receives Awards

    E-Print Network [OSTI]

    New Mexico, University of

    Electrical and Computer Engineering Professor Sanjay Krishna Receives Awards April 1, 2013 and regents' lecturer will be presented with the Young Scientist Award for 2013 from the International Symposium of Compound Semiconductors in May at their meeting in Kobe, Japan. The award, which

  19. Received 9 June 2004 Accepted 25 June 2004

    E-Print Network [OSTI]

    Davies, Jonathan

    dependent on solar energy input. Previous work demonstrated a sig- nificant correlation between the generalReceived 9 June 2004 Accepted 25 June 2004 Published online 24 September 2004 Environmental energy Biology, Imperial College London, Silwood Park Campus, Ascot SL5 7PY, UK 2 Molecular Systematics Section

  20. EXAMINE AND EVALUATE A PROCESS TO USE SALT CAVERNS TO RECEIVE SHIP BORNE LIQUEFIED NATURAL GAS

    SciTech Connect (OSTI)

    Michael M. McCall; William M. Bishop; D. Braxton Scherz

    2003-04-24T23:59:59.000Z

    The goal of the U.S. Department of Energy cooperative research project is to define, describe, and validate, a process to utilize salt caverns to receive and store the cargoes of LNG ships. The project defines the process as receiving LNG from a ship, pumping the LNG up to cavern injection pressures, warming it to cavern compatible temperatures, injecting the warmed vapor directly into salt caverns for storage, and distribution to the pipeline network. The performance of work under this agreement is based on U.S. Patent 5,511,905, and other U.S. and Foreign pending patent applications. The cost sharing participants in the research are The National Energy Technology Laboratory (U.S. Department of Energy), BP America Production Company, Bluewater Offshore Production Systems (U.S.A.), Inc., and HNG Storage, L.P. Initial results indicate that a salt cavern based receiving terminal could be built at about half the capital cost, less than half the operating costs and would have significantly higher delivery capacity, shorter construction time, and be much more secure than a conventional liquid tank based terminal. There is a significant body of knowledge and practice concerning natural gas storage in salt caverns, and there is a considerable body of knowledge and practice in handling LNG, but there has never been any attempt to develop a process whereby the two technologies can be combined. Salt cavern storage is infinitely more secure than surface storage tanks, far less susceptible to accidents or terrorist acts, and much more acceptable to the community. The project team developed conceptual designs of two salt cavern based LNG terminals, one with caverns located in Calcasieu Parish Louisiana, and the second in Vermilion block 179 about 50 miles offshore Louisiana. These conceptual designs were compared to conventional tank based LNG terminals and demonstrate superior security, economy and capacity. The potential for the development of LNG receiving terminals, utilizing salt caverns for storage and the existing comprehensive pipeline system has profound implications for the next generation of LNG terminals. LNG imports are expected to become an increasingly more important part of the U.S. energy supply and the capacities to receive LNG securely, safely, and economically must be expanded. Salt cavern LNG receiving terminals both in onshore and offshore locations can be quickly built and provide additional import capacity into the U.S. exceeding 6-10 Bcf/day in the aggregate.

  1. Computing the Effects of Operator Attention Allocation in Human Control of Multiple Robots

    E-Print Network [OSTI]

    Crandall, Jacob W.

    In time-critical systems in which a human operator supervises multiple semiautomated tasks, failure of the operator to focus attention on high-priority tasks in a timely manner can lower the effectiveness of the system and ...

  2. Long-term Abstract Learning of Attentional Set Andrew B. Leber

    E-Print Network [OSTI]

    Leber, Andy

    Long-term Abstract Learning of Attentional Set Andrew B. Leber University of New Hampshire Jun in which they are used (see Cooper & Shallice, 2000; Norman & Shallice, 1986; see also Logan, 1988); after

  3. Shifting the spotlight of attention: evidence for discrete computations in cognition

    E-Print Network [OSTI]

    Buschman, Tim

    Our thoughts have a limited bandwidth; we can only fully process a few items in mind simultaneously. To compensate, the brain developed attention, the ability to select information relevant to the current task, while ...

  4. Invariant Visual Responses From Attentional Gain Fields EMILIO SALINAS AND L. F. ABBOTT

    E-Print Network [OSTI]

    Columbia University

    Invariant Visual Responses From Attentional Gain Fields EMILIO SALINAS AND L. F. ABBOTT Volen Center for Complex Systems, Brandeis University, Waltham, Massachusetts 02254-9110 Salinas, Emilio and L

  5. Race Matters: Disparities in African-American Children with Attention Deficit Hyperactivity Disorder

    E-Print Network [OSTI]

    Omiecinski, Curtis

    . As defined by the American Psychiatric Association's Diagnostic and Statistical Manual of Mental Disorders) inattention, (2) impulsivity, and (3) hyperactivity, the American Psychiatric Association (APA) believed145 145 Race Matters: Disparities in African-American Children with Attention Deficit Hyperactivity

  6. Increasing corn for biofuel production reduces biocontrol services in agricultural landscapes

    E-Print Network [OSTI]

    Landis, Doug

    November 5, 2008 (received for review May 22, 2008) Increased demand for corn grain as an ethanol feedstock of cellulosic ethanol production processes that use a variety of feedstocks could foster increased diversity has driven a rapid expansion of the corn ethanol industry in the United States. Continuing growth

  7. Providing protection: Agencies receive funding to repair, upgrade dams

    E-Print Network [OSTI]

    Wythe, Kathy

    2009-01-01T23:59:59.000Z

    Story by Kathy Wythe tx H2O | pg. 26 Providing protection Agencies receive funding to repair, upgrade dams along with local partners, can apply for grant funds, he said. Construction of the dams began through four federal authorizations..., called floodwater retarding structures and built mostly in rural areas during the 1950s to 1970s, are aging and need repairing. Others now protect urban areas that have developed downstream and need upgrading to meet more stringent safety standards...

  8. Taxation of oil and gas payments received independent of production

    SciTech Connect (OSTI)

    Fambrough, J.

    1983-06-01T23:59:59.000Z

    Several economic incentives are offered to mineral owners for entering into an oil and gas lease. These are: (1) a bonus; (2) a delay rental; (3) a royalty. This article is intended to aid in the understanding of the tax treatment for these oil and gas payments, received independent of production, in order to avoid any tax penalties and to elucidate a tax-minimization strategy. 11 references, 7 tables. (NLG)

  9. Digital-data receiver synchronization method and apparatus

    DOE Patents [OSTI]

    Smith, Stephen F.; Turner, Gary W.

    2005-12-06T23:59:59.000Z

    Digital-data receiver synchronization is provided with composite phase-frequency detectors, mutually cross-connected comparison feedback or both to provide robust reception of digital data signals. A single master clock may be used to provide frequency signals. Advantages can include fast lock-up time in moderately to severely noisy conditions, greater tolerance to noise and jitter when locked, and improved tolerance to clock asymmetries.

  10. Digital-data receiver synchronization method and apparatus

    DOE Patents [OSTI]

    Smith, Stephen F. (Loudon, TN) [Loudon, TN; Turner, Gary W. (Clinton, TN) [Clinton, TN

    2009-09-08T23:59:59.000Z

    Digital data receiver synchronization is provided with composite phase-frequency detectors, mutually cross-connected comparison feedback or both to provide robust reception of digital data signals. A single master clock can be used to provide frequency signals. Advantages can include fast lock-up time in moderately to severely noisy conditions, greater tolerance to noise and jitter when locked, and improved tolerance to clock asymmetries.

  11. The effect of task demands and artificially manipulated object salience on visual attention in real world scenes 

    E-Print Network [OSTI]

    Welensky, Zachary

    2008-06-27T23:59:59.000Z

    Eye movements during real-world scene viewing have been shown to be influenced by two main mechanisms of attention allocation: bottom-up and top-down. The exact effect each mechanism has on attention allocation is the focus ...

  12. The Effect of Task Demands, Artificially Manipulated Critical Object Saliency and Semantic Congruence on Visual Attention in Real World Scenes 

    E-Print Network [OSTI]

    Blyth, Steven Philip

    2008-06-27T23:59:59.000Z

    Bottom up and top down models of visual attention have been proposed to deal with the guidance of human visual attention in viewing real-world scenes. However task demands put upon us can change our behaviour dramatically. ...

  13. Attending to opportunity: an attention-based model of how boards of directors impact strategic entrepreneurship in established enterprise 

    E-Print Network [OSTI]

    Tuggle, Christopher Scott

    2005-02-17T23:59:59.000Z

    Using the attention-based view, this study is concerned with two levels of board of directors? interaction relating to strategic entrepreneurship: (1) how individual board members may affect the attention of the entire ...

  14. TCAT to Receive Ithaca's First 'Cutting-Edge' Fuel Cell Bus ...

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

    Archived News Stories Latest News TCAT to Receive Ithaca's First 'Cutting-Edge' Fuel Cell Bus 2 Cornellians receive Distinguished Scholar Award Versatile polymer film...

  15. Y-12 CIO Travis Howerton Receives 2009 Linton Brooks Medal for...

    National Nuclear Security Administration (NNSA)

    Home Field Offices Welcome to the NNSA Production Office NPO News Releases Y-12 CIO Travis Howerton Receives 2009 Linton ... Y-12 CIO Travis Howerton Receives 2009...

  16. Power efficiency for very high temperature solar thermal cavity receivers

    DOE Patents [OSTI]

    McDougal, Allan R. (LaCanada-Flintridge, CA); Hale, Robert R. (Upland, CA)

    1984-01-01T23:59:59.000Z

    This invention is an improved solar energy cavity receiver for exposing materials and components to high temperatures. The receiver includes a housing having an internal reflective surface defining a cavity and having an inlet for admitting solar radiation thereto. A photothermal absorber is positioned in the cavity to receive radiation from the inlet. A reflective baffle is positioned between the absorber and the inlet to severely restrict the re-radiation of energy through the inlet. The front surface of the baffle defines a narrow annulus with the internal reflective surface of the housing. The front surface of the baffle is contoured to reflect incoming radiation onto the internal surface of the housing, from which it is reflected through the annulus and onto the front surface of the absorber. The back surface of the baffle intercepts infrared radiation from the front of the absorber. With this arrangement, a high percentage of the solar power input is retained in the cavity; thus, high internal temperatures are attained.

  17. Combustion system for hybrid solar fossil fuel receiver

    DOE Patents [OSTI]

    Mehos, Mark S.; Anselmo, Kenneth M.; Moreno, James B.; Andraka, Charles E.; Rawlinson, K. Scott; Corey, John; Bohn, Mark S.

    2004-05-25T23:59:59.000Z

    A combustion system for a hybrid solar receiver comprises a pre-mixer which combines air and fuel to form an air-fuel mixture. The mixture is introduced tangentially into a cooling jacket. A burner plenum is fluidically connected to the cooling jacket such that the burner plenum and the cooling jacket are arranged in thermal contact with one another. The air-fuel mixture flows through the cooling jacket cooling the burner plenum to reduce pre-ignition of the air-fuel mixture in the burner plenum. A combustion chamber is operatively associated with and open to the burner plenum to receive the air-fuel mixture from the burner plenum. An igniter is operatively positioned in the combustion chamber to combust the air-fuel mixture, releasing heat. A recuperator is operatively associated with the burner plenum and the combustion chamber and pre-heats the air-fuel mixture in the burner plenum with heat from the combustion chamber. A heat-exchanger is operatively associated and in thermal contact with the combustion chamber. The heat-exchanger provides heat for the hybrid solar receiver.

  18. Wideband Heterodyne QWIP Receiver Development for Thermonuclear Fusion Measurements

    SciTech Connect (OSTI)

    Bennett, C.A.; Buchanan, M.; Hutchinson, D.P.; Liu, H.C.; Richards, R.K.; Simpson, M.L.

    1998-11-01T23:59:59.000Z

    Oak Ridge National Laboratory (ORNL) has been developing heterodyne receivers for plasma diagnostic applications for over 20 years. One area of this work has been the development of a diagnostic system for the measurement of the energy of alpha particles created in a thermonuclear fusion reactor. These particles originate with an energy of 3.5 MeV and cool to the thermal energy of the plasma (around 15 keV) after several seconds. To measure the velocity distribution of these alpha particles, a Thomson scattering diagnostic is under development based on a high power CO{sub 2} laser at 10 microns with a heterodyne receiver. The Doppler shift generated by Thomson scattering of the alpha particles requires a wideband heterodyne receiver (greater than 10 GHz). Because Mercury-Cadimum-Telluride (MCT) detectors are limited to a bandwidth of approximately 2 GHz, a Quantum Well Infrared Photodetector (QWIP) detector was obtained from the National Research Council of Canada (NRC) and evaluated for its heterodyne performance using the heterodyne testing facility developed at ORNL.

  19. Diesel prices continue to increase

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisitingContract Management FermiDavidDiesel prices continue to increase The U.S.

  20. Diesel prices continue to increase

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisitingContract Management FermiDavidDiesel prices continue to increase The

  1. Diesel prices continue to increase

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisitingContract Management FermiDavidDiesel prices continue to increase TheDiesel

  2. Technical Assistance: Increasing Code Compliance

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOriginEducationVideoStrategic| Department ofGeneralWind »Assistance: Increasing Code Compliance

  3. Dr. Douglas G. Horner Receives Research Award Dr. Douglas G. Horner, OD PhD, has received an award to support a new collaborative

    E-Print Network [OSTI]

    Indiana University

    Dr. Douglas G. Horner Receives Research Award Dr. Douglas G. Horner, OD PhD, has received an award. Peabody, OD, of IUSO on, "Developing and Implementing 21st Century Ideas on Optometry through Area Studies

  4. Paul Moore Receives Top Oklahoma Art Awards NORMAN --Paul Moore, University of Oklahoma Artist-In-Residence, will receive a Special Recognition

    E-Print Network [OSTI]

    Oklahoma, University of

    Paul Moore Receives Top Oklahoma Art Awards NORMAN -- Paul Moore, University of Oklahoma Artist-In-Residence, will receive a Special Recognition Award Awards Ceremony at the Oklahoma Capitol Nov. 13. Moore is currently working

  5. Sandia Energy - EC Publications

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

    in deploying concentrating solar power systems, glint and glare from concentrating solar collectors and receivers is receiving increased attention as a potential hazard or...

  6. Evaluation of annual efficiencies of high temperature central receiver concentrated solar power plants with thermal energy storage.

    SciTech Connect (OSTI)

    Ehrhart, Brian David; Gill, David Dennis

    2013-07-01T23:59:59.000Z

    The current study has examined four cases of a central receiver concentrated solar power plant with thermal energy storage using the DELSOL and SOLERGY computer codes. The current state-of-the-art base case was compared with a theoretical high temperature case which was based on the scaling of some input parameters and the estimation of other parameters based on performance targets from the Department of Energy SunShot Initiative. This comparison was done for both current and high temperature cases in two configurations: a surround field with an external cylindrical receiver and a north field with a single cavity receiver. There is a fairly dramatic difference between the design point and annual average performance, especially in the solar field and receiver subsystems, and also in energy losses due to the thermal energy storage being full to capacity. Additionally, there are relatively small differences (<2%) in annual average efficiencies between the Base and High Temperature cases, despite an increase in thermal to electric conversion efficiency of over 8%. This is due the increased thermal losses at higher temperature and operational losses due to subsystem start-up and shut-down. Thermal energy storage can mitigate some of these losses by utilizing larger thermal energy storage to ensure that the electric power production system does not need to stop and re-start as often, but solar energy is inherently transient. Economic and cost considerations were not considered here, but will have a significant impact on solar thermal electric power production strategy and sizing.

  7. SONY GXB5005 GPS RECEIVER DATA Without shield can Installed With shield can in place

    E-Print Network [OSTI]

    Berns, Hans-Gerd

    SONY GXB5005 GPS RECEIVER DATA Without shield can Installed With shield can in place (for illustrative purposes only) The Sony GXB5005 GPS receiver is a miniature 12 channel GPS module with support for WAAS/EGNOS augmented positioning. The receiver is based on Sony's CXD2951 single-chip GPS receiver IC

  8. 2090 IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 57, NO. 7, JULY 2009 Turbo Receivers for

    E-Print Network [OSTI]

    Benoît, Escrig

    2090 IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 57, NO. 7, JULY 2009 Turbo Receivers for Interleave turbo receivers for Interleave- Division Multiple-Access (IDMA) systems will be discussed. The multiple provides faster convergence of the turbo receiver. The discussed turbo receivers will be evaluated by means

  9. Laboratory researcher Joel Rowland to receive DOE Early Career Award

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |Is Your Home asLCLSLaboratoryRowland to receive DOE Early Career

  10. NREL: Concentrating Solar Power Research - Receiver R&D

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Saleshttp://www.fnal.gov/directorate/nalcal/nalcal02_07_05_files/nalcal.gifNREL NRELChemical andWhat IsThermalReceiver R&D

  11. Hanford Projects Receive Sustainability Awards | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently Asked Questions for DOE FYAffairs,Assessment Documents |Project|Projects Receive

  12. Westinghouse receives high marks for management, operation of WIPP

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron SpinPrincetonUsing Maps1DOETHEWeeklyTRU Solutions LLC EarnsEarnsReceives

  13. EM Receives Several Honors in 2011 DOE Sustainability Awards | Department

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T,Office ofEnergyFinalEnergy Boosts Efforts to Helpof Energy Receives

  14. Security enhanced with increased vehicle inspections

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

    Security enhanced with increased vehicle inspections Security measures increase as of March: vehicle inspections won't delay traffic New increased security procedures meet LANL's...

  15. FACSIM/MRS-1: Cask receiving and consolidation performance assessment

    SciTech Connect (OSTI)

    Lotz, T.L.; Shay, M.R.

    1987-06-01T23:59:59.000Z

    A simulation analysis was completed to assess the performance of the shipping cask receiving and spent-fuel handling, consolidation and canistering operations of the Monitored Retrievable Storage (MRS) facility. One purpose of this evaluation was to estimate the limits of MRS operational capabilities and factors leading to those limitations. The model used to obtain the performance assessment, FACSIM/MRS-1, is one of two components of the FACSIM model developed by PNL's simulation effort for the nuclear waste-handling facility. FACSIM/MRS-1 provides the user with information about lag-storage requirements, machine use, cask queues, welder queues, and cask process and cask turnaround times. The model can help determine the effect that the following activities have on operating efficiency: (1) receiving multiple cask shipments, when rail-cask or truck-cask shipments arrive at the facility in groups of two or more, and (2) operating the facility five days per week, three shifts per day or seven days per week, three shifts per day for any conditions. In addition, sensitivity to equipment failure frequency and the time needed for equipment repair can be studied. Information on the above operating characteristics may be obtained for any spent-fuel rate, any split of shipments between truck and rail transport, or any split of boiling water reactor/pressurized water reactor fuel.

  16. Development of Advanced Combustion Technologies for Increased...

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

    Combustion Technologies for Increased Thermal Efficiency Development of Advanced Combustion Technologies for Increased Thermal Efficiency Investigation of fuel effects on...

  17. Improved high temperature solar absorbers for use in Concentrating Solar Power central receiver applications.

    SciTech Connect (OSTI)

    Stechel, Ellen Beth; Ambrosini, Andrea; Hall, Aaron Christopher; Lambert, Timothy L.; Staiger, Chad Lynn; Bencomo, Marlene

    2010-09-01T23:59:59.000Z

    Concentrating solar power (CSP) systems use solar absorbers to convert the heat from sunlight to electric power. Increased operating temperatures are necessary to lower the cost of solar-generated electricity by improving efficiencies and reducing thermal energy storage costs. Durable new materials are needed to cope with operating temperatures >600 C. The current coating technology (Pyromark High Temperature paint) has a solar absorptance in excess of 0.95 but a thermal emittance greater than 0.8, which results in large thermal losses at high temperatures. In addition, because solar receivers operate in air, these coatings have long term stability issues that add to the operating costs of CSP facilities. Ideal absorbers must have high solar absorptance (>0.95) and low thermal emittance (<0.05) in the IR region, be stable in air, and be low-cost and readily manufacturable. We propose to utilize solution-based synthesis techniques to prepare intrinsic absorbers for use in central receiver applications.

  18. Waste receiving and processing plant control system; system design description

    SciTech Connect (OSTI)

    LANE, M.P.

    1999-02-24T23:59:59.000Z

    The Plant Control System (PCS) is a heterogeneous computer system composed of numerous sub-systems. The PCS represents every major computer system that is used to support operation of the Waste Receiving and Processing (WRAP) facility. This document, the System Design Description (PCS SDD), includes several chapters and appendices. Each chapter is devoted to a separate PCS sub-system. Typically, each chapter includes an overview description of the system, a list of associated documents related to operation of that system, and a detailed description of relevant system features. Each appendice provides configuration information for selected PCS sub-systems. The appendices are designed as separate sections to assist in maintaining this document due to frequent changes in system configurations. This document is intended to serve as the primary reference for configuration of PCS computer systems. The use of this document is further described in the WRAP System Configuration Management Plan, WMH-350, Section 4.1.

  19. Carbon Characterization Laboratory Readiness to Receive Irradiated Graphite Samples

    SciTech Connect (OSTI)

    Karen A. Moore

    2011-05-01T23:59:59.000Z

    The Carbon Characterization Laboratory (CCL) is located in Labs C19 and C20 of the Idaho National Laboratory Research Center. The CCL was established under the Next Generation Nuclear Plant Project to support graphite and ceramic composite research and development activities. The research conducted in this laboratory will support the Advanced Graphite Creep experiments—a major series of material irradiation experiments within the Next Generation Nuclear Plant Graphite program. The CCL is designed to characterize and test low activated irradiated materials such as high purity graphite, carbon-carbon composites, silicon-carbide composite, and ceramic materials. The laboratory is fully capable of characterizing material properties for both irradiated and nonirradiated materials. Major infrastructural modifications were undertaken to support this new radiological facility at Idaho National Laboratory. Facility modifications are complete, equipment has been installed, radiological controls and operating procedures have been established and work management documents have been created to place the CCL in readiness to receive irradiated graphite samples.

  20. Title of dissertation: EXPLORING WHAT STABILIZES TEACHERS' ATTENTION AND RESPONSIVENESS TO THE

    E-Print Network [OSTI]

    Maryland at College Park, University of

    ABSTRACT Title of dissertation: EXPLORING WHAT STABILIZES TEACHERS' ATTENTION AND RESPONSIVENESS Dissertation directed by: Associate Professor Andrew Elby Department of Teaching and Learning, Policy is rare and fleeting in American classrooms. In this dissertation, I aim to learn more from teachers who

  1. Mind-Prosthesis Metaphor for Design of Human-Computer Interfaces That Support Better Attention Management

    E-Print Network [OSTI]

    Corran, Ruth

    Mind-Prosthesis Metaphor for Design of Human-Computer Interfaces That Support Better Attention and the desktop metaphor in particular, we propose that the mind-prosthesis metaphor may be better suited in particular, we propose that the mind-prosthesis metaphor may serve as a guide for the design of future

  2. Please fax to: 949 -824-9690 Attention: Tanya Zabalegui UCI Extension Airport Transportation Request

    E-Print Network [OSTI]

    Stanford, Kyle

    Please fax to: 949 -824-9690 Attention: Tanya Zabalegui ­ UCI Extension Airport Transportation in the UC Irvine area and need transportation from the airport to your housing location, please readth , 2011. Destinations: We will provide transportation to your housing location including UC Irvine

  3. Cell-Type-Specific Synchronization of Neural Activity in FEF with V4 during Attention

    E-Print Network [OSTI]

    Gregoriou, Georgia G.

    Shifts of gaze and shifts of attention are closely linked and it is debated whether they result from the same neural mechanisms. Both processes involve the frontal eye fields (FEF), an area which is also a source of top-down ...

  4. Macro-level Attention to Mobile Agent Security: Introducing the Mobile Agent Secure Hub Infrastructure Concept

    E-Print Network [OSTI]

    Roth, Volker

    for the safe management of mobile agents they deploy onto the Internet. Our in- frastructural approach is basedMacro-level Attention to Mobile Agent Security: Introducing the Mobile Agent Secure Hub Security Research Centre Queensland University of Technology Brisbane, Queensland, Australia and Dept

  5. PHOTOREALISTIC ATTENTION-BASED GAZE ANIMATION Laurent Itti, Nitin Dhavale and Frederic Pighin

    E-Print Network [OSTI]

    Itti, Laurent

    - trol to the automatic animation of a photorealistic virtual human head. The attention model simulates autonomous virtual human animation is of photorealistic quality. 1. INTRODUCTION This study addresses. The model's output animates a photorealistic 3D human face model, posing more stringent criteria

  6. Probabilistic Learning of Task-Specific Visual Attention Ali Borji Dicky N. Sihite Laurent Itti

    E-Print Network [OSTI]

    Itti, Laurent

    of information, including global context of a scene, previous attended locations, and previous motor ac- tions compo- nents are combined in the control of gaze. In computer vision, research on visual attention has about the cause for such behav- iors [26][27]. Diverging from the current trend, we focus on modeling

  7. Research Report Effects of attention on the neural processing of harmonic syntax

    E-Print Network [OSTI]

    Research Report Effects of attention on the neural processing of harmonic syntax in Western music) were recorded. The five-chord progressions included 61% harmonically expected cadences (I­I6 ­IV­V­I), 26% harmonically unexpected cadences (I­I6 ­IV­V­N6 ), and 13% with one of the five chords having

  8. Brief Communications Attentional Modulation of fMRI Responses in Human V1 Is

    E-Print Network [OSTI]

    Song, Joo-Hyun

    for the attended features (Martinez- Trujillo and Treue, 2004). This change can be detected using fMRI (Serences et- ings (Gc or Ga), and to detect small changes in the attended dimension (Fig. 1). Regardless of the task conditions (Gc, Ga) and the two attentional tasks (AO, AC). We hypothesized that our ability to classify

  9. Increasing throughput of multiplexed electrical bus in pipe-lined architecture

    DOE Patents [OSTI]

    Asaad, Sameh; Brezzo, Bernard V; Kapur, Mohit

    2014-05-27T23:59:59.000Z

    Techniques are disclosed for increasing the throughput of a multiplexed electrical bus by exploiting available pipeline stages of a computer or other system. For example, a method for increasing a throughput of an electrical bus that connects at least two devices in a system comprises introducing at least one signal hold stage in a signal-receiving one of the two devices, such that a maximum frequency at which the two devices are operated is not limited by a number of cycles of an operating frequency of the electrical bus needed for a signal to propagate from a signal-transmitting one of the two devices to the signal-receiving one of the two devices. Preferably, the signal hold stage introduced in the signal-receiving one of the two devices is a pipeline stage re-allocated from the signal-transmitting one of the two devices.

  10. Six regional businesses receive Native American Venture Acceleration...

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

    the recipients create jobs, increase their revenue base and help diversify the area economy. February 4, 2014 Los Alamos National Laboratory sits on top of a once-remote mesa in...

  11. Receiver subsystem analysis report (RADL Item 4-1). 10-MWe Solar Thermal Central-Receiver Pilot Plant: solar-facilities design integration

    SciTech Connect (OSTI)

    Not Available

    1982-04-01T23:59:59.000Z

    The results are presented of those thermal hydraulic, structural, and stress analyses required to demonstrate that the Receiver design for the Barstow Solar Pilot Plant will satisfy the general design and performance requirements during the plant's design life. Recommendations resulting from those analyses and supporting test programs are presented regarding operation of the receiver. The analyses are limited to receiver subsystem major structural parts (primary tower, receiver unit core support structure), pressure parts (absorber panels, feedwater, condensate and steam piping/components, flash tank, and steam mainfold) and shielding. (LEW)

  12. Environmental temperature and Turkey performance: the use of diets containing increased levels of protein and use

    E-Print Network [OSTI]

    Boyer, Edmond

    Environmental temperature and Turkey performance: the use of diets containing increased levels 581 King 5turkeys kept under an 18 or 25 °C-choice with whole wheat. Turkeys which received the conventional diets (178 or 209 g protein/kg) grew significantly

  13. The effort factor: Evaluating the increasing marginal impact of resource extraction over time

    E-Print Network [OSTI]

    Pauly, Daniel

    conclude Global Environmental Change xxx (2014) xxx­xxx A R T I C L E I N F O Article history: Received 1The effort factor: Evaluating the increasing marginal impact of resource extraction over time Debra and Environmental Sociology, University of Alberta, Canada b Fisheries Centre, University of British Columbia

  14. NERSC User James Drake Receives 2010 APS Maxwell Prize for Plasma...

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

    User James Drake Receives 2010 APS Maxwell Prize for Plasma Physics NERSC User James Drake Receives 2010 APS Maxwell Prize for Plasma Physics January 31, 2011 drake10.jpg Long-time...

  15. Design and validation of an air window for a molten salt solar thermal receiver

    E-Print Network [OSTI]

    Paxson, Adam Taylor

    2009-01-01T23:59:59.000Z

    This thesis contributes to the development of Concentrating Solar Power (CSP) receivers and focuses on the design of an efficient aperture. An air window is proposed for use as the aperture of a CSP molten salt receiver ...

  16. A NEW SOLAR THERMAL RECEIVER UTILIZING A SMALL PARTICLE HEAT EXCHANGER

    E-Print Network [OSTI]

    Hunt, Arlon J.

    2011-01-01T23:59:59.000Z

    Report LBL 8520. ) A NEW SOLAR THERMAL RECEIVER UTILIZING Aenergy. A new type of solar thermal receiver based on thisThe success of the solar thermal electric power program

  17. Solar and Energy Loan Fund Receives $300,000 Community Reinvestment...

    Energy Savers [EERE]

    Solar and Energy Loan Fund Receives 300,000 Community Reinvestment Act Loan to Invest in Home Energy Upgrades Solar and Energy Loan Fund Receives 300,000 Community Reinvestment...

  18. High-Efficiency Low-Cost Solar Receiver for Use in a Supercritical...

    Office of Environmental Management (EM)

    High-Efficiency Low-Cost Solar Receiver for Use in a Supercritical CO2 Recompression Cycle - FY13 Q1 High-Efficiency Low-Cost Solar Receiver for Use in a Supercritical CO2...

  19. Fact #856 January 19, 2015 Plug-in and Hybrid Cars Receive High...

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

    6 January 19, 2015 Plug-in and Hybrid Cars Receive High Scores for Owner Satisfaction Fact 856 January 19, 2015 Plug-in and Hybrid Cars Receive High Scores for Owner Satisfaction...

  20. Environmental Impacts of Increased Hydroelectric Development...

    Energy Savers [EERE]

    Environmental Impacts of Increased Hydroelectric Development at Existing Dams Environmental Impacts of Increased Hydroelectric Development at Existing Dams This report describes...

  1. Sandia National Laboratories: increased photovoltaic efficiency

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

    increased photovoltaic efficiency Combining 'Tinkertoy' Materials with Solar Cells for Increased Photovoltaic Efficiency On December 4, 2014, in Energy, Materials Science, News,...

  2. Increasing Scientific Productivity by Tracking Data

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

    Data Tracking Increases Scientific Productivity Data Tracking Increases Scientific Productivity July 20, 2011 | Tags: HPSS, NERSC Linda Vu, lvu@lbl.gov, +1 510 486 2402 HPSS...

  3. NREL Particle Receiver Will Enable High-Temperature CSP (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2014-08-01T23:59:59.000Z

    Near-blackbody enclosed particle receiver can support high-temperature thermal energy storage and high-efficiency power cycles.

  4. Dish Stirling Solar-Receiver Combustor Test Program

    SciTech Connect (OSTI)

    Bankston, C.P.; Back, L.H.

    1981-08-15T23:59:59.000Z

    The overall objectives of the program were to evluate and verify the operational and energy transfer characteristics of the Dish Stirling Solar Receiver (DSSR) combustor/heat exchanger system. The DSSR is designed to operate with fossil fuel augmentation utilizing a swirl combustor and cross flow heat exchanger consisting of a single row of 48 closely spaced tubes that are curved into a conical shape. In the present study the performance of the combustor/heat exchanger system without a Stirling engine has been studied over a range of operating conditions and output levels using water as the working fluid. Results show that the combustor may be started under cold conditions, controlled safely, and operated at a constant air/fuel ratio (10% excess air) over the required range of firing rates. Furthermore, nondimensional heat transfer coefficients based on total heat transfer are plotted versus Reynolds number and compared with literature data taken for single rows of closely spaced tubes perpendicular to cross flow. The data show enhanced heat transfer for the present geometry and test conditions. Analysis of the results shows that the present system will meet specified thermal requirements, thus verifying the feasibility of the DSSR combustor design for final prototype fabrication.

  5. Diversity Performance of a Practical Non-Coherent Detect-and-Forward Receiver

    E-Print Network [OSTI]

    Gaithersburg, Maryland, USA Abstract--We propose a non-coherent receiver for the fixed detect-and-forward relay, and the gap from full diversity is quantified. While the general receiver depends on the source-relay channel of the source-destination channel are known. The receiver is derived using the generalized likelihood ratio test

  6. A Low-Power Correlation Detector For Binary FSK Direct-Conversion Receivers

    E-Print Network [OSTI]

    Arslan, HĂĽseyin

    A Low-Power Correlation Detector For Binary FSK Direct-Conversion Receivers J. Min, H-C. Liu, A detector, Tone detection, Correlation, Direct-conversion wireless receivers Abstract A multiplierless-suited for low-power direct-conversion receivers used in wireless communications systems employ- ing FSK

  7. Sequence Optimization-based UWB Receiver Jihad Ibrahim, Rekha Menon, and Dr. R.M. Buehrer

    E-Print Network [OSTI]

    Southern California, University of

    Sequence Optimization-based UWB Receiver Jihad Ibrahim, Rekha Menon, and Dr. R.M. Buehrer Sponsored transmit pulse shape Proposed Receiver Transmit Sequence X Channel Receiver Sequence- Correlator Y UWB · Objective: Maximize SNR · Optimal transmit sequence X solves: H is the channel matrix · Optimal X

  8. Efficient MIMO-OFDM Schemes for Future Terrestrial Digital TV with Unequal Received

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    .nasser@insa-rennes.fr Abstract- This article investigates the effect of equal and unequal received powers on the performances- orthogonal schemes: the BLAST scheme, the Linear Dispersion (LD) code and the Golden code, and we compare for modelling the effect of unequal received powers on different receiving antennas. Therefore, we analyze

  9. We schedule your job when we receive this completed request form. You then receive a JOB CONFIRMATION which will include job number, copy due date and job checklist.

    E-Print Network [OSTI]

    Sheridan, Jennifer

    We schedule your job when we receive this completed request form. You then receive a JOB CONFIRMATION which will include job number, copy due date and job checklist. JOB NAME Date Form Submitted pages) Copy to come by due date note due date on Job Confirmation Mini Catalog (12-24 pages) PROVIDE

  10. On the Feasibility of Receive Collaboration in Wireless Sensor Networks

    E-Print Network [OSTI]

    Beigl, Michael

    -cluster transmissions decreases at the expense of increasing the inter- cluster communications. It is shown that. INTRODUCTION Limited lifetime of WSNs due to relatively small and non- renewable batteries of their nodes makes of the nodes are generally more energy consuming than their computations [1]. There are various methods

  11. Enhanced Attentional Bias towards Sexually Explicit Cues in Individuals with and without Compulsive Sexual Behaviours

    E-Print Network [OSTI]

    Mechelmans, Daisy J.; Irvine, Michael; Banca, Paula; Porter, Laura; Mitchell, Simon; Mole, Tom B.; Lapa, Tatyana R.; Harrison, Neil A.; Potenza, Marc N.; Voon, Valerie

    2014-08-25T23:59:59.000Z

    Identification Test (AUDIT) [43] assessed hazardous drinking behaviors. General Internet use was assessed using the Young’s Internet Addiction Test (YIAT) [44] and the Compulsive Internet Use Scale (CIUS) [45]. The National Adult Reading Test [46] was used... ] and at least 150 msec to disengage from a simple cue towards another presented in a different spatial location [48]. In contrast, longer durations of 500 to 1000 msec may reflect multiple shifts of attention [49], reflecting disengagement and maintenance...

  12. Capture Of Visual Attention By Abrupt Onsets: A Model Of Contingent Chris S. Fick (cfick@rice.edu)

    E-Print Network [OSTI]

    Byrne, Mike

    is captured is crucial in the design of any system with a visual display, from air-traffic control to a wordCapture Of Visual Attention By Abrupt Onsets: A Model Of Contingent Orienting Chris S. Fick (cfick understanding the processes at work in visual attention capture, an ACT-R/PM model was constructed to simulate

  13. Essays on the Impact of Presidential and Media-Based Usage of Anxiety-Producing Rhetoric on Dynamic Issue Attention

    E-Print Network [OSTI]

    Olds, Christopher Paul

    2012-02-14T23:59:59.000Z

    suggest anxiety-based issue discussion does have the potential to guide issue attention. Prior changes in anxiety-based cues do predict future levels of attention the public provides to issues. A positive shift in anxiety cues by elites appears to have...

  14. Fully Integrated Frequency and Phase Generation for a 6-18GHz Tunable Multi-Band Phased-Array Receiver in CMOS

    E-Print Network [OSTI]

    Hajimiri, Ali

    control, phase locked loops, phase noise, phased arrays, radio receivers I. INTRODUCTION Very large-scale phased-arrays covering a wide range of frequencies can provide exciting new opportunities for increasedFully Integrated Frequency and Phase Generation for a 6-18GHz Tunable Multi-Band Phased

  15. Receives Major Grant for Research in Nanotechnology UCSC researchers are leading a collaborative effort to develop new technology that could increase the

    E-Print Network [OSTI]

    by converting waste heat into electric current. The project will use nanoscale engineering of materials current systems for converting heat to electricity are turbine-based, heavy, noisy, and not very efficient, known as the Seebeck effect and thermionic emission, for some time. When one side of a material

  16. HOTSPOTS OF CLIMATEDRIVEN INCREASES IN RESIDENTIAL

    E-Print Network [OSTI]

    . This paper provides reduced form estimates of changes in electricity consumption due to increased use to higher projections of electricity consumption. These increases in projected electricity consumption were: climate change, vulnerability, electricity consumption, heating, cooling Please use the following citation

  17. Bioenergy Research at BNL: Increasing Productivity Using

    E-Print Network [OSTI]

    Homes, Christopher C.

    Bioenergy Research at BNL: Increasing Productivity Using Biological Interactions Lee Newman With D consequences: ­ Price of corn has doubled ­ Farmers are planting more corn for ethanol · Increase alternative

  18. Degradation of parabolic-cylindrical solar collector performance: receiver misalignments and tracking inaccuracies

    SciTech Connect (OSTI)

    Ratzel, A.C.

    1986-01-01T23:59:59.000Z

    Studies were conducted to determine the performance of a 2-m, 90/sup 0/ E-W oriented solar reflector trough and a receiver assembly consisting of a receiver tube surrounded by a concentric outer glass envelope. Three receiver tube diameters (2.223, 2.54, and 3.175 cm o.d. tubes) were analyzed subject to a variety of collector errors including receiver misalignments and tracking bias, to assess the detrimental effects of these problems. Of the possible problems considered, it was shown that a misalignment of the receiver assembly above the focal plane is most critical, since the absorbed solar fluxes are concentrated near the base of the tube, leading to possible ''hot spots.'' In addition, as a result of this work, it was shown that the intermediate receiver tube size (2.54 cm o.d.) should be used with the 2-m reflector trough, so long as small errors and misalignments are expected.

  19. Six area firms receive ORNL small business awards | ornl.gov

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

    National Laboratory Communications 865.574.4399 Six area firms receive ORNL small business awards OAK RIDGE, Tenn., March 14, 2014 -- Six East Tennessee firms doing business...

  20. Thermal stress analysis of eccentric tube receiver using concentrated solar radiation

    SciTech Connect (OSTI)

    Wang, Fuqiang; Shuai, Yong; Yuan, Yuan; Yang, Guo; Tan, Heping [School of Energy Science and Engineering, Harbin Institute of Technology, 92, West Dazhi Street, Harbin 150001 (China)

    2010-10-15T23:59:59.000Z

    In the parabolic trough concentrator with tube receiver system, the heat transfer fluid flowing through the tube receiver can induce high thermal stress and deflection. In this study, the eccentric tube receiver is introduced with the aim to reduce the thermal stresses of tube receiver. The ray-thermal-structural sequential coupled numerical analyses are adopted to obtain the concentrated heat flux distributions, temperature distributions and thermal stress fields of both the eccentric and concentric tube receivers. During the sequential coupled numerical analyses, the concentrated heat flux distribution on the bottom half periphery of tube receiver is obtained by Monte-Carlo ray tracing method, and the fitting function method is introduced for the calculated heat flux distribution transformation from the Monte-Carlo ray tracing model to the CFD analysis model. The temperature distributions and thermal stress fields are obtained by the CFD and FEA analyses, respectively. The effects of eccentricity and oriented angle variation on the thermal stresses of eccentric tube receiver are also investigated. It is recommended to adopt the eccentric tube receiver with optimum eccentricity and 90 oriented angle as tube receiver for the parabolic trough concentrator system to reduce the thermal stresses. (author)

  1. Small-Particle Solar Receiver for High-Temperature Brayton Power...

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

    Receiver for High-Temperature Brayton Power Cycles This fact sheet describes a scattering solar thermal concentrators project awarded under the DOE's 2012 SunShot Concentrating...

  2. His Own Received Him Not: Jimmy Carter, the Religious Right, and the

    E-Print Network [OSTI]

    Sibille, Etienne

    His Own Received Him Not: Jimmy Carter, the Religious Right, and the 1980 Presidential Election recently, Redeemer: The Life of Jimmy Carter. Randall Balmer LECTURE COLLOQUIUM RELIGIOUS STUDIES

  3. Final report for LDRD project 11-0783 : directed robots for increased military manpower effectiveness.

    SciTech Connect (OSTI)

    Rohrer, Brandon Robinson; Rothganger, Fredrick H.; Wagner, John S.; Xavier, Patrick Gordon; Morrow, James Dan

    2011-09-01T23:59:59.000Z

    The purpose of this LDRD is to develop technology allowing warfighters to provide high-level commands to their unmanned assets, freeing them to command a group of them or commit the bulk of their attention elsewhere. To this end, a brain-emulating cognition and control architecture (BECCA) was developed, incorporating novel and uniquely capable feature creation and reinforcement learning algorithms. BECCA was demonstrated on both a mobile manipulator platform and on a seven degree of freedom serial link robot arm. Existing military ground robots are almost universally teleoperated and occupy the complete attention of an operator. They may remove a soldier from harm's way, but they do not necessarily reduce manpower requirements. Current research efforts to solve the problem of autonomous operation in an unstructured, dynamic environment fall short of the desired performance. In order to increase the effectiveness of unmanned vehicle (UV) operators, we proposed to develop robots that can be 'directed' rather than remote-controlled. They are instructed and trained by human operators, rather than driven. The technical approach is modeled closely on psychological and neuroscientific models of human learning. Two Sandia-developed models are utilized in this effort: the Sandia Cognitive Framework (SCF), a cognitive psychology-based model of human processes, and BECCA, a psychophysical-based model of learning, motor control, and conceptualization. Together, these models span the functional space from perceptuo-motor abilities, to high-level motivational and attentional processes.

  4. The effect of an internal versus external focus of attention on the learning of a tennis backhand

    E-Print Network [OSTI]

    Maddox, Melinda Dianne

    1999-01-01T23:59:59.000Z

    that the external focus condition produced higher accuracy scores in acquisition, retention, and transfer. In Experiment 2, movement form was evaluated in addition to the accuracy of the shots. We also examined the effects of attentional focus on individuals...

  5. Some Skepticism about Increasing Shareholder Power

    E-Print Network [OSTI]

    Anabtawi, Iman

    2007-01-01T23:59:59.000Z

    2005) (“[E]ffective corporate governance, which enhancesmetric for effective corporate governance. Id. at 892 (“Iwould improve corporate governance and increase shareholder

  6. Increasing water holding capacity for irrigation

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

    Increasing water holding capacity for irrigation Reseachers recommend solutions for sediment trapping in irrigation system LANL and SNL leveraged technical expertise to determine...

  7. New Sensor Network Technology Increases Manufacturing Efficiency...

    Energy Savers [EERE]

    Increases Manufacturing Efficiency April 11, 2013 - 12:00am Addthis EERE supported Eaton Corporation in the development and successful deployment of an electric motor...

  8. INCREASING RENDERING PERFORMANCE OF GRAPHICS HARDWARE

    E-Print Network [OSTI]

    Whitton, Mary C.

    a compute-on-demand paradigm for the design of high-speed and energy-efficient graphics components. The goalINCREASING RENDERING PERFORMANCE OF GRAPHICS HARDWARE Justin Hensley A dissertation submitted RIGHTS RESERVED ii #12;ABSTRACT JUSTIN HENSLEY: Increasing Rendering Performance of Graphics Hardware

  9. PERCEIVED SPEED INCREASES AT LOW LUMINANCE

    E-Print Network [OSTI]

    Pashkam, Maryam Vaziri

    PERCEIVED SPEED INCREASES AT LOW LUMINANCE Maryam Vaziri-Pashkam, Patrick Cavanagh Vision Sciences Laboratory, Department of Psychology, Harvard University Discussion Does changing the mean luminance is increased as the mean luminance of the grating decreases. Conclusion First Experiment: Stimuli were radial

  10. Interaction between visual attention and the processing of visual emotional stimuli in humans : eye-tracking, behavioural and event-related potential experiments 

    E-Print Network [OSTI]

    Acunzo, David Jean Pascal

    2013-11-28T23:59:59.000Z

    Past research has shown that the processing of emotional visual stimuli and visual attention are tightly linked together. In particular, emotional stimuli processing can modulate attention, and, reciprocally, the processing ...

  11. Spring 2011 ODS Director Paul Coates Receives Award from American Society for Nutrition

    E-Print Network [OSTI]

    Bandettini, Peter A.

    Spring 2011 ODS Director Paul Coates Receives Award from American Society for Nutrition The Office of Dietary Supplements (ODS) Director Paul Coates is the 2011 recipient of the Conrad A. Elvehjem Award received the award at the annual meeting of the society on April 10. In addition to directing ODS, Dr

  12. A Reconfigurable Active Retrodirective/Direct Conversion Receiver Array for Wireless Sensor Systems

    E-Print Network [OSTI]

    Itoh, Tatsuo

    of California, Los Angeles 405 Hilgard Ave., Los Angeles, CA 90095 Abstract -- A reconfigurable active time. In a retrodirective system, the communication link between the transponder and base station can (a), the array system works as a direct conversion receiver and stores data received from remote

  13. Impact of Transmit Power Control and Receiver Association on Interweave Network Interference

    E-Print Network [OSTI]

    Tellambura, Chintha

    Impact of Transmit Power Control and Receiver Association on Interweave Network Interference S power control and receiver association schemes. For this purpose, secondary transmitter nodes, a per-user transmit power control scheme is considered in which the transmit power is based

  14. Thermal performance simulation of a solar cavity receiver under windy conditions

    SciTech Connect (OSTI)

    Fang, J.B.; Wei, J.J.; Dong, X.W.; Wang, Y.S. [State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049 (China)

    2011-01-15T23:59:59.000Z

    Solar cavity receiver plays a dominant role in the light-heat conversion. Its performance can directly affect the efficiency of the whole power generation system. A combined calculation method for evaluating the thermal performance of the solar cavity receiver is raised in this paper. This method couples the Monte-Carlo method, the correlations of the flow boiling heat transfer, and the calculation of air flow field. And this method can ultimately figure out the surface heat flux inside the cavity, the wall temperature of the boiling tubes, and the heat loss of the solar receiver with an iterative solution. With this method, the thermal performance of a solar cavity receiver, a saturated steam receiver, is simulated under different wind environments. The highest wall temperature of the boiling tubes is about 150 C higher than the water saturation temperature. And it appears in the upper middle parts of the absorbing panels. Changing the wind angle or velocity can obviously affect the air velocity inside the receiver. The air velocity reaches the maximum value when the wind comes from the side of the receiver (flow angle {alpha} = 90 ). The heat loss of the solar cavity receiver also reaches a maximum for the side-on wind. (author)

  15. Green's function retrieval from reflection data, in absence of a receiver at the virtual source position

    E-Print Network [OSTI]

    Snieder, Roel

    Green's function retrieval from reflection data, in absence of a receiver at the virtual source; accepted 6 March 2014) The methodology of Green's function retrieval by cross-correlation has led to many, a virtual source is created at the position of a receiver. Here a method is discussed for Green's function

  16. AMMONIA RECEIVER DESIGN FOR A 500m2 Rebecca Dunn, Keith Lovegrove, and Greg Burgess

    E-Print Network [OSTI]

    decomposition of ammonia to store solar energy. Ammonia passes alternately between energy-storing (dissociationAMMONIA RECEIVER DESIGN FOR A 500m2 DISH Rebecca Dunn, Keith Lovegrove, and Greg Burgess Solar 0200, Australia. Phone: +61 2 6125 4046. rebecca.dunn@anu.edu.au Abstract Previous ammonia receiver

  17. Design of a High Temperature Small Particle Solar Receiver for Powering a Gas Turbine Engine

    E-Print Network [OSTI]

    Ponce, V. Miguel

    Design of a High Temperature Small Particle Solar Receiver for Powering a Gas Turbine Engine Dr will describe the design of a high temperature solar receiver capable of driving a gas turbine for power conclusions regarding the best way to operate a solar powered gas turbine have been obtained

  18. LNA and Mixer Designs for Multi-Band Receiver Front-Ends

    E-Print Network [OSTI]

    Poobuapheun, Nuntachai

    2009-01-01T23:59:59.000Z

    15mW, 70kHz 1/f Corner Direct Conversion CMOS Receiver,” inA +78 dBm IIP2 CMOS Direct Conversion Mixer for FullyC. Hull, et al. , “A Direct-Conversion Receiver for 900MHz (

  19. Power Control Algorithms for MMSE Receivers in CDMA Systems Yong Liu and Tan F. Wong

    E-Print Network [OSTI]

    Wong, Tan F.

    , we describe the system model. Power control al- gorithms for the MMSE receiver are introducedPower Control Algorithms for MMSE Receivers in CDMA Systems Yong Liu and Tan F. Wong Department system. The objective of power control is to guaran- tee that certain signal-to-interference ratio (SIR

  20. DYNAMIC SIMULATION OF MONO-TUBE CAVITY RECEIVERS FOR DIRECT STEAM GENERATION

    E-Print Network [OSTI]

    for intended deployment in large arrays of dishes, with steam directed to a central large steam turbine powerDYNAMIC SIMULATION OF MONO-TUBE CAVITY RECEIVERS FOR DIRECT STEAM GENERATION José Zapata 1 , John dish has been in operation since 2010 with a mono-tube steam cavity receiver, the SG4 system

  1. Kalman filter based MMSE receiver for the DS-CDMA system in a Rayleigh fading channel

    E-Print Network [OSTI]

    Hassan, Khursheed

    2000-01-01T23:59:59.000Z

    and the receiver, the channel is modeled as a fading channel. Fading affects the transmitted signal by changing its amplitude and phase. This in turn plays havoc with the detector. The receiver not only makes wrong decisions about the transmitted bits (because...

  2. Shipper/receiver difference verification of spent fuel by use of PDET

    SciTech Connect (OSTI)

    Ham, Y. S.; Sitaraman, S. [Global Security Directorate, Lawrence Livermore National Laboratory, Livermore, CA 94550 (United States)

    2011-07-01T23:59:59.000Z

    Spent fuel storage pools in most countries are rapidly approaching their design limits with the discharge of over 10,000 metric tons of heavy metal from global reactors. Countries like UK, France or Japan have adopted a closed fuel cycle by reprocessing spent fuel and recycling MOX fuel while many other countries opted for above ground interim dry storage for their spent fuel management strategy. Some countries like Finland and Sweden are already well on the way to setting up a conditioning plant and a deep geological repository for spent fuel. For all these situations, shipments of spent fuel are needed and the number of these shipments is expected to increase significantly. Although shipper/receiver difference (SRD) verification measurements are needed by IAEA when the recipient facility receives spent fuel, these are not being practiced to the level that IAEA has desired due to lack of a credible measurement methodology and instrument that can reliably perform these measurements to verify non-diversion of spent fuel during shipment and confirm facility operator declarations on the spent fuel. In this paper, we describe a new safeguards method and an associated instrument, Partial Defect Tester (PDET), which can detect pin diversion from Pressurized Water Reactor (PWR) Spent Fuel Assemblies in an in-situ condition. The PDET uses multiple tiny neutron and gamma detectors in the form of a cluster and a simple, yet highly precise, gravity-driven system to obtain underwater radiation measurements inside a Pressurized Water Reactor (PWR) spent fuel assembly. The method takes advantage of the PWR fuel design which contains multiple guide tubes which can be accessed from the top. The data obtained in such a manner can provide spatial distribution of neutron and gamma flux within a spent fuel assembly. Our simulation study as well as validation measurements indicated that the ratio of the gamma signal to the thermal neutron signal at each detector location normalized to the peak ratio of all the detector locations gives a unique signature that is sensitive to missing pins. The signature is principally dependent on the geometry of the detector locations, and little sensitive to enrichment or burn-up variations. A small variation in the fuel bundle, such as a few missing pins, changes the shape of the signature to enable detection. After verification of the non-diversion of spent fuel pins, the neutron signal and gamma signal are subsequently used to verify the consistency of the operator declaration on the fuel burn-up and cooling time. (authors)

  3. Impact of Aerosols on Atmospheric Attenuation Loss in Central Receiver Systems: Preprint

    SciTech Connect (OSTI)

    Sengupta, M.; Wagner, M. J.

    2011-08-01T23:59:59.000Z

    Atmospheric attenuation loss between the heliostat field and receiver has been recognized as a significant source of loss in Central Receiver Systems. In clear sky situations, extinction of Direct Normal Irradiance (DNI) is primarily by aerosols in the atmosphere. When aerosol loading is high close to the surface the attenuation loss between heliostat and receivers is significantly influenced by the amount of aerosols present on a particular day. This study relates measured DNI to aerosol optical depths close to the surface of the earth. The model developed in the paper uses only measured DNI to estimate the attenuation between heliostat and receiver in a central receiver system. The requirement that only a DNI measurement is available potentially makes the model a candidate for widespread use.

  4. Atrial natriuretic factor increases vascular permeability

    SciTech Connect (OSTI)

    Lockette, W.; Brennaman, B. (Wayne State Univ. School of Medicine, Detroit, MI (USA))

    1990-12-01T23:59:59.000Z

    An increase in central blood volume in microgravity may result in increased plasma levels of atrial natriuretic factor (ANF). Since elevations in plasma ANF are found in clinical syndromes associated with edema, and since space motion sickness induced by microgravity is associated with an increase in central blood volume and facial edema, we determined whether ANF increases capillary permeability to plasma protein. Conscious, bilaterally nephrectomized male rats were infused with either saline, ANF + saline, or hexamethonium + saline over 2 h following bolus injections of 125I-albumin and 14C-dextran of similar molecular size. Blood pressure was monitored and serial determinations of hematocrits were made. Animals infused with 1.0 micrograms.kg-1.min-1 ANF had significantly higher hematocrits than animals infused with saline vehicle. Infusion of ANF increased the extravasation of 125I-albumin, but not 14C-dextran from the intravascular compartment. ANF also induced a depressor response in rats, but the change in blood pressure did not account for changes in capillary permeability to albumin; similar depressor responses induced by hexamethonium were not accompanied by increased extravasation of albumin from the intravascular compartment. ANF may decrease plasma volume by increasing permeability to albumin, and this effect of ANF may account for some of the signs and symptoms of space motion sickness.

  5. PERMIT OR PREREQUISITE OVERRIDE REQUEST FORM Request a PERMIT if you receive a "Permit Required" message when registering.

    E-Print Network [OSTI]

    Gaucher, Eric

    " message when registering. Request a PREREQ OVERRIDE if you receive a "Preq & Test Score Error" message

  6. Both construction and operations continue to increase

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

    Both construction and operations continue to increase As mentioned earlier, Building 9731 was the first building completed at Y-12, having been completed in just a few weeks in...

  7. Increasing TLB reach using TCAM cells 

    E-Print Network [OSTI]

    Kumar, Anuj

    2005-02-17T23:59:59.000Z

    We propose dynamic aggregation of virtual tags in TLB to increase its coverage and improve the overall miss ratio during address translation. Dynamic aggregation exploits both the spatial and temporal locality inherent in ...

  8. Report: Natural Gas Infrastructure Implications of Increased...

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

    Increased Demand from the Electric Power Sector More Documents & Publications Downeast LNG, Inc. - FE Dkt. No. 14-173-LNG Dominion Cove Point LNG, LP - FE Dkt. No 11-128-LNG...

  9. Increasing Global Renewable Energy Market Share

    E-Print Network [OSTI]

    Peinke, Joachim

    Increasing Global Renewable Energy Market Share: Recent Trends and Perspectives Final Report Prepared for: Beijing International Renewable Energy Conference 2005 Prepared by: The Expert Group .............................................................. ix Message to the Beijing International Renewable Energy Conference from the Secretary General

  10. RESEARCH ARTICLE Lifespan Extension and Increased Pumping

    E-Print Network [OSTI]

    Gronostajski, Richard M.

    RESEARCH ARTICLE Lifespan Extension and Increased Pumping Rate Accompany Pharyngeal Muscle in multiple behavioral defects; slower pharyngeal pumping rate, impaired egg laying, defective motility nfi-1 must be expressed to rescue the pharyngeal pumping defect. Expression of nfi-1 from

  11. Introduction Wetlands are increasingly used for wastewater

    E-Print Network [OSTI]

    Hall, Sharon J.

    Introduction Wetlands are increasingly used for wastewater treatment Plant community changes and related nutrient retention within an aridland constructed wastewater treatment wetland How does plant community composition change in an aridland constructed wastewater treatment wetland and how do those

  12. Sideband characterization and atmospheric observations with various 340 GHz heterodyne receivers

    SciTech Connect (OSTI)

    Renker, Matthias, E-mail: renker@iap.unibe.ch; Murk, Axel [Institute of Applied Physics, University of Bern, Bern (Switzerland); Rea, Simon P. [STFC Rutherford Appleton Laboratory, Didcot, Oxfordshire (United Kingdom); Emrich, A.; Frisk, U. [OMNISYS Instruments, Västra Frölunda (Sweden)

    2014-08-15T23:59:59.000Z

    This paper describes sideband response measurements and atmospheric observations with a double sideband and two Single Sideband (SSB) receiver prototypes developed for the multi-beam limb sounder instrument stratosphere-troposphere exchange and climate monitor radiometer. We first show an advanced Fourier-Transform Spectroscopy (FTS) method for sideband response and spurious signal characterization. We then present sideband response measurements of the different prototype receivers and we compare the results of the SSB receivers with sideband measurements by injecting a continuous wave signal into the upper and lower sidebands. The receivers were integrated into a total-power radiometer and atmospheric observations were carried out. The observed spectra were compared to forward model spectra to conclude on the sideband characteristics of the different receivers. The two sideband characterization methods show a high degree of agreement for both SSB receivers with various local oscillator settings. The measured sideband response was used to correct the forward model simulations. This improves the agreement with the atmospheric observations and explains spectral features caused by an unbalanced sideband response. The FTS method also allows to quantify the influence of spurious harmonic responses of the receiver.

  13. Suction-recirculation device for stabilizing particle flows within a solar powered solid particle receiver

    DOE Patents [OSTI]

    Kolb, Gregory J. (Albuquerque, NM)

    2012-02-07T23:59:59.000Z

    A suction-recirculation device for stabilizing the flow of a curtain of blackened heat absorption particles falling inside of a solar receiver with an open aperture. The curtain of particles absorbs the concentrated heat from a solar mirror array reflected up to the receiver on a solar power tower. External winds entering the receiver at an oblique angle can destabilize the particle curtain and eject particles. A fan and ductwork is located behind the back wall of the receiver and sucks air out through an array of small holes in the back wall. Any entrained particles are separated out by a conventional cyclone device. Then, the air is recirculated back to the top of the receiver by injecting the recycled air through an array of small holes in the receiver's ceiling and upper aperture front wall. Since internal air is recirculated, heat losses are minimized and high receiver efficiency is maintained. Suction-recirculation velocities in the range of 1-5 m/s are sufficient to stabilize the particle curtain against external wind speeds in excess of 10 m/s.

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

    DOE Patents [OSTI]

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

    1993-12-14T23:59:59.000Z

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

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

    DOE Patents [OSTI]

    Thompson, Donald O. (Ames, IA); Hsu, David K. (Ames, IA)

    1993-12-14T23:59:59.000Z

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

  16. Impact on regional winter climate by CO2 increases vs. by maritime-air J. Otterman,1

    E-Print Network [OSTI]

    . Atlas,2 G. L. Russell,3 and H. Saaroni4 Received 16 April 2003; revised 3 July 2003; accepted 15 July, which is the currently expected per-decade increase. Fluctuations in the North-Atlantic surface winds produce fluctuations in FOR over central Europe: monthly-mean FOR in strong-wind February 1990 was 0

  17. Increased Mercury Bioaccumulation Follows Water Quality Improvement

    SciTech Connect (OSTI)

    Bogle, M.A.; Peterson, M.J.; Smith, J.G.; Southworth, G.R.

    1999-09-15T23:59:59.000Z

    Changes in physical and chemical characteristics of aquatic habitats made to reduce or eliminate ecological risks can sometimes have unforeseen consequences. Environmental management activities on the U.S. Dept. of Energy reservation in Oak Ridge, Tennessee,have succeeded in improving water quality in streams impacted by discharges fi-om industrial facilities and waste disposal sites. The diversity and abundance of pollution-sensitive components of the benthic macroinvertebrate communities of three streams improved after new waste treatment systems or remedial actions reduced inputs of various toxic chemicals. Two of the streams were known to be mercury-contaminated from historical spills and waste disposal practices. Waterborne mercury concentrations in the third were typical of uncontaminated systems. In each case, concentrations of mercury in fish, or the apparent biological availability of mercury increased over the period during which ecological metrics indicated improved water quality. In the system where waterborne mercury concentrations were at background levels, increased mercury bioaccumulation was probably a result of reduced aqueous selenium concentrations; however, the mechanisms for increased mercury accumulation in the other two streams remain under investigation. In each of the three systems, reduced inputs of metals and inorganic anions was followed by improvements in the health of aquatic invertebrate communities. However, this reduction in risk to aquatic invertebrates was accompanied by increased risk to humans and piscivorous wildlife related to increased mercury concentrations in fish.

  18. Analysis of genomic Regions of IncreaseD Gene Expression (RIDGE)s in immune activation 

    E-Print Network [OSTI]

    Hansson, Lena

    2009-01-01T23:59:59.000Z

    A RIDGE (Region of IncreaseD Gene Expression), as defined by previous studies, is a consecutive set of active genes on a chromosome that span a region around 110 kbp long. This study investigated RIDGE formation by ...

  19. Magnetic Resonant Coupling As a Potential Means for Wireless Power Transfer to Multiple Small Receivers

    E-Print Network [OSTI]

    Cannon, Benjamin Louis

    Wireless power transfer via magnetic resonant coupling is experimentally demonstrated in a system with a large source coil and either one or two small receivers. Resonance between source and load coils is achieved with ...

  20. Development of a solar receiver for a high-efficiency thermionic/thermoelectric conversion system

    SciTech Connect (OSTI)

    Naito, H.; Kohsaka, Y.; Cooke, D.; Arashi, H. [Tohoku Univ., Aramaki (Japan)] [Tohoku Univ., Aramaki (Japan)

    1996-10-01T23:59:59.000Z

    Solar energy is one of the most promising energy resources on Earth and in space, because it is clean and inexhaustible. Therefore, we have been developing a solar-powered high-efficiency thermionic-thermoelectric conversion system which combines a thermionic converter (TIC) with a thermoelectric converter (TEC) to use thermal energy efficiently and to achieve high efficiency conversion. The TIC emitter must uniformly heat up to 1800 K. The TIC emitter can be heated using thermal radiation from a solar receiver maintained at a high temperature by concentrated solar irradiation. A cylindrical cavity-type solar receiver constructed from graphite was designed and heated in a vacuum by using the solar concentrator at Tohoku University. The maximum temperature of the solar receiver enclosed by a molybdenum cup reached 1965 K, which was sufficiently high to heat a TIC emitter using thermal radiation from the receiver. 4 refs., 6 figs., 1 tab.

  1. Critical issues in the development of hybrid solar/gas receivers for dish/Stirling systems

    SciTech Connect (OSTI)

    Adkins, D.R.; Rawlinson, K.S.

    1991-01-01T23:59:59.000Z

    A hybrid solar/gas receiver system will allow Stirling engines to operate with combined solar and gas power sources. One of the most attractive options for building a hybrid system is to integrate a gas-fired heat pipe directly into a heat-pipe solar receiver. Before this union can take place, however, a number of technical issues must be resolved. A design must be found that properly distributes the heat-pipe's working fluid over the heated surfaces and prevents fluid from accumulating at undesirable locations in the heat pipe. Experience that has been gained in developing solar receivers and gas-fired heat pipes under recent Department of Energy solar-thermal dish-electric programs is used in this paper to address many of the technical obstacles to building receiver systems. 16 refs.

  2. Small-Particle Solar Receiver for High-Temperature Brayton Power Cycles (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-09-01T23:59:59.000Z

    San Diego State University is one of the 2012 SunShot CSP R&D awardees for their advanced receivers. This fact sheet explains the motivation, description, and impact of the project.

  3. Optimization of central receiver concentrated solar thermal : site selection, heliostat layout & canting

    E-Print Network [OSTI]

    Noone, Corey J. (Corey James)

    2011-01-01T23:59:59.000Z

    In this thesis, two new models are introduced for the purposes of (i) locating sites in hillside terrain suitable for central receiver solar thermal plants and (ii) optimization of heliostat field layouts for any terrain. ...

  4. Assessing the Effect of Students’ Perceptions on Benefits Received from Participation in Service-Learning 

    E-Print Network [OSTI]

    Goolsby, Tessa Maring

    2011-02-22T23:59:59.000Z

    This study examined how teachers' perceptions and attitudes and students' perceptions impacted the learning outcomes students received from their participation in service-learning. Service-learning is a form of experiential ...

  5. A NYQUIST FOLDING ANALOG-TO-INFORMATION RECEIVER Gerald L. Fudge1

    E-Print Network [OSTI]

    Haupt, Jarvis

    A NYQUIST FOLDING ANALOG-TO-INFORMATION RECEIVER Gerald L. Fudge1 , Ross E. Bland1 , Mark A. Chivers1 , Sujit Ravindran1 , Jarvis Haupt2 , P. E. Pace3 1 L-3 Communications Integrated Systems

  6. Acceptance test report for the 241-SY-101 Flexible Receiver Gamma Detector System

    SciTech Connect (OSTI)

    Dowell, J.L.

    1995-02-17T23:59:59.000Z

    This Acceptance Test Report is for the 241-SY-101 Flexible Receiver Gamma Detector System. This test verified that the data logger and data converter for the gamma detector system functions as intended.

  7. Agency Responses to Comments Received during the 2011 Alaska Forum on the Environment

    Broader source: Energy.gov [DOE]

    Agency Responses to Comments Received during the 2011 Alaska Forum on the EnvironmentEnvironmental Justice Interagency Working Group Community DialogueAnchorage, AKFebruary 7-11, 2011

  8. Energy Secretary Chu to Receive Arthur L. Schawlow Award at the...

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

    --- U.S. Energy Secretary Steven Chu will receive the Arthur L. Schawlow Award at the Laser Institute of America Annual Meeting tomorrow in Anaheim, CA, in recognition of his...

  9. Modeling the solar thermal receiver for the CSPonD Project

    E-Print Network [OSTI]

    Rees, Jennifer A. (Jennifer Anne)

    2011-01-01T23:59:59.000Z

    The objective was to create an accurate steady state thermal model of a molten salt receiver prototype with a horizontal divider plate in the molten salt for Concentrated Solar Power on Demand (CSPonD). The purpose of the ...

  10. Wirth receives top DOE honor, credits UT-ORNL partnership | ornl...

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

    Media Contact: David Goddard University of Tennessee 865-974-0683 Wirth receives top DOE honor, credits UT-ORNL partnership Brian Wirth Brian Wirth (hi-res image) OAK...

  11. Analog Baseband Filters and Mixed Signal Circuits for Broadband Receiver Systems

    E-Print Network [OSTI]

    Kulkarni, Raghavendra Laxman

    2012-02-14T23:59:59.000Z

    deals with broadband wireless receivers. With an objective to gain insight, we quantify the impact of undesired out-band blockers on analog baseband in a broadband radio. We present a systematic evaluation of the dynamic range requirements...

  12. Project Profile: A Small-Particle Solar Receiver for High-Temperature...

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

    high-temperature solar receiver in the multi-megawatt range that can drive a gas turbine to generate low-cost electricity. The goals of this project are to:...

  13. Fact #856 January 19, 2015 Plug-in and Hybrid Cars Receive High...

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

    Plug-in and Hybrid Cars Receive High Scores for Owner Satisfaction fotw856web.xlsx More Documents & Publications Quarterly Analysis Review February 2015 Fact 853 December 29,...

  14. Pilot Allocation and Receive Antenna Selection: A Markov Decision Theoretic Approach

    E-Print Network [OSTI]

    Coupechoux, Marceau

    Stephen, Chandra R. Murthy, and Marceau Coupechoux Abstract--This paper considers antenna selection (AS@gmail.com, cmurthy@ece.iisc.ernet.in and marceau.coupechoux@telecom-paristech.fr. that transmit and receive AS can

  15. Measuring the Optical Performance of Evacuated Receivers via an Outdoor Thermal Transient Test: Preprint

    SciTech Connect (OSTI)

    Kutscher, C.; Burkholder, F.; Netter, J.

    2011-08-01T23:59:59.000Z

    Modern parabolic trough solar collectors operated at high temperatures to provide the heat input to Rankine steam power cycles employ evacuated receiver tubes along the collector focal line. High performance is achieved via the use of a selective surface with a high absorptance for incoming short-wave solar radiation and a low emittance for outgoing long-wave infrared radiation, as well as the use of a hard vacuum to essentially eliminate convective and conductive heat losses. This paper describes a new method that determines receiver overall optical efficiency by exposing a fluid-filled, pre-cooled receiver to one sun outdoors and measuring the slope of the temperature curve at the point where the receiver temperature passes the glass envelope temperature (that is, the point at which there is no heat gain or loss from the absorber). This transient test method offers the potential advantages of simplicity, high accuracy, and the use of the actual solar spectrum.

  16. An Air-Based Cavity-Receiver for Solar Trough Concentrators Roman Bader

    E-Print Network [OSTI]

    . A numerical heat transfer model is developed to determine the receiver's absorption efficiency and pumping penalties. In this paper, a numerical heat transfer model of an air-based cylindrical cavity

  17. High-Efficiency Receivers for Supercritical Carbon Dioxide Cycles, Concentrating Solar Power (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-09-01T23:59:59.000Z

    Brayton Energy is one of the 2012 SunShot CSP R&D awardees for their advanced receivers. This fact sheet explains the motivation, description, and impact of the project.

  18. Y-12's historian receives 2013 Muddy Boot Award | Y-12 National...

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

    Y-12's historian receives 2013 Muddy Boot Award Posted: December 16, 2013 - 12:43pm Ray Smith, left, is one of three recipients of this year's Muddy Boot award from the East...

  19. RECEIVED JUL

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

    it a reasonable alternative. 3.2.5 Conversion to Heatinq from Solar, Wind, and Geothermal Energy -- Solar, wind, and geothermal heating also were analyzed and eliminated from...

  20. INCREASED LEAD ABSORPTION AND LEAD POISONING

    E-Print Network [OSTI]

    INCREASED LEAD ABSORPTION AND LEAD POISONING IN YOUNG CHILDREN A STATDIE:"IT BY THE CEJde slnt:t! the Surgeon GenerJi's Statement. "~edicJI Aspects of Childhood Lead POisoning," was issued:ld absorption Jnd lead poisoning. Such JCtivities for children will continue to be necessary until sources

  1. DREAM tool increases space weather predictions

    E-Print Network [OSTI]

    - 1 - DREAM tool increases space weather predictions April 13, 2012 Predicting space weather improved by new DREAM modeling tool Earth's radiation belts can now be studied with a new modeling tool DREAM comes into play. Radiation belt structure and dynamics revealed DREAM is a modeling tool

  2. Porous radiant burners having increased radiant output

    DOE Patents [OSTI]

    Tong, Timothy W. (Tempe, AZ); Sathe, Sanjeev B. (Tempe, AZ); Peck, Robert E. (Tempe, AZ)

    1990-01-01T23:59:59.000Z

    Means and methods for enhancing the output of radiant energy from a porous radiant burner by minimizing the scattering and increasing the adsorption, and thus emission of such energy by the use of randomly dispersed ceramic fibers of sub-micron diameter in the fabrication of ceramic fiber matrix burners and for use therein.

  3. Closing Digital Divides, Increasing Digital Literacy

    E-Print Network [OSTI]

    Acton, Scott

    people s media ecology #12;2. MOBILE SHIFT #12;#12;THE MOBILE PARADOX #12;Are all digital media Closing Digital Divides, Increasing Digital Literacy S. Craig Watkins The University of Texas at Austin #12;4Shifts #12;1. Digital divides & Participation gaps (Jenkins 2006; Watkins 2012) #12;Young

  4. Relationship between R? bounds and asymptotic relative efficiency for quantized receivers

    E-Print Network [OSTI]

    Cimadevilla, Marcos Ortiz

    1991-01-01T23:59:59.000Z

    RELATIONSHIP BETWEEN AD BOUNDS AND ASYMPTOTIC RELATIVE EFFICIENCY FOR QUANTIZED RECEIVERS A Thesis by MARCOS ORTIZ CIMADEVILLA Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE December 1991 Major Subject. : Electrical Engineering RELATIONSHIP BETWEEN R() BOUNDS AND ASYMPTOTIC RELATIVE EFFICIENCY FOR QUANTIZED RECEIVERS A Thesis bv MARCOS ORTIZ CIMADEVILLA Approved as to style and content by...

  5. Predicting flammable gas mixtures in Hanford double-contained receiver tanks

    SciTech Connect (OSTI)

    Hedengren, D.C.

    1998-05-13T23:59:59.000Z

    This study presents a methodology to estimate the maximum concentrations of flammable gases (ammonia, hydrogen, and methane) which could exist in the vapor space of a double-contained receiver tank (DCRT). DCRTs are temporary storage tanks which receive highly radioactive liquid wastes from salt well pumping of Hanford single-shell tanks (SST). The methodology of this study could be used in other applications involving the storage and transfer of radioactive liquid wastes which generate or contain various dissolved flammable gases.

  6. A Dual Tone Multiple Frequency receiver using a multiplexed OTA-C filter frequency detection architecture

    E-Print Network [OSTI]

    Garcia, Gerald William

    1988-01-01T23:59:59.000Z

    A DUAL TONE MULTIPLE FREQUENCY RECEIVER USING A MULTIPLEXED OTA-C FILTER FREQUENCY DETECTION ARCHITECTURE A Thesis by GERALD WILLIAM GARCIA Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement... for the degree of MASTER OF SCIENCE August 1988 Major Subject: Electrical Engineering A DUAL TONE MULTIPLE FREQUENCY RECEIVER USING A MULTIPLEXED OTA-C FILTER FREQUENCY DETECTION ARCHITECTURE A Thesis by GERALD WILLIAM GARCIA Approved as to style...

  7. Two-dimensional model of the air flow and temperature distribution in a cavity-type heat receiver of a solar stirling engine

    SciTech Connect (OSTI)

    Makhkamov, K.K.; Ingham, D.B.

    1999-11-01T23:59:59.000Z

    A theoretical study on the air flow and temperature in the heat receiver, affected by free convection, of a Stirling Engine for a Dish/Stirling Engine Power System is presented. The standard {kappa}-{epsilon} turbulence model for the fluid flow has been used and the boundary conditions employed were obtained using a second level mathematical model of the Stirling Engine working cycle. Physical models for the distribution of the solar insolation from the Concentrator on the bottom and side walls of the cavity-type heat receiver have been taken into account. The numerical results show that most of the heat losses in the receiver are due to re-radiation from the cavity and conduction through the walls of the cavity. It is in the region of the boundary of the input window of the heat receiver where there is a sensible reduction in the temperature in the shell of the heat exchangers and this is due to the free convection of the air. Further, the numerical results show that convective heat losses increase with decreasing tilt angle.

  8. RUMINAL ADAPTATION TO INCREASING LEVELS OF CONCENTRATES

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    .0 % citrus pulp, 1.0 % lard, 7.0 % sugarbeet pulp, 3.3 % oat husk meal, 2.0 % coconut expeller and 2-chromatography. The rate of lactate fermentation was measured by incubation of 10 ml rumen fluid (taken at 14.00 h) with 1. If adaptation occurs one should expect an increase of lactate and a higher rate of L- lactate fermentation

  9. New hydrocracking catalysts increase throughput, run length

    SciTech Connect (OSTI)

    Huizinga, T. [Shell Internationale Petroleum Mij., The Hague (Netherlands); Theunissen, J.M.H. [Rayong Refinery Co. Ltd., Rayong (Thailand); Minderhoud, H.; Veen, R. van [Koninklijke/Shell-Lab., Amsterdam (Netherlands)

    1995-06-26T23:59:59.000Z

    An improved, second-stage hydrocracking catalyst has been developed by combining stabilized Y zeolites with amorphous silica alumina cracking components. A commercial application of this catalyst, along with a new, first-stage zeolitic hydrocracking catalyst, resulted in increased unit throughput and cycle length. The paper discusses the hydrocracking process, first-stage catalysts, second-stage catalysts, hydrogenation process, commercial results, and product properties.

  10. Solar Central Receiver Hybrid Power Systems sodium-cooled receiver concept. Final report. Volume II, Book 2. Conceptual design, Sections 5 and 6

    SciTech Connect (OSTI)

    None

    1980-01-01T23:59:59.000Z

    The overall, long-term objective of the Solar Central Receiver Hybrid Power System program is to identify, characterize, and ultimately demonstrate the viability and cost effectiveness of solar/fossil, steam Rankine cycle, hybrid power systems that: (1) consist of a combined solar central receiver energy source and a nonsolar energy source at a single, common site, (2) may operate in the base, intermediate, and peaking capacity modes, (3) produce the rated output independent of variations in solar insolation, (4) provide a significant savings (50% or more) in fuel consumption, and (5) produce power at the minimum possible cost in mills/kWh. It is essential that these hybrid concepts be technically feasible and economically competitive with other systems in the near to mid-term time period (1985-1990) on a commercial scale. The program objective for Phase I is to identify and conceptually characterize solar/fossil steam Rankine cycle, commercial-scale, power plant systems that are economically viable and technically feasible. This volume contains the detailed conceptual design and cost/performance estimates and an assessment of the commercial scale solar central receiver hybrid power system. (WHK)

  11. Eye Gaze for Attention Prediction in Multimodal Human-Machine Conversation Zahar Prasov and Joyce Y. Chai and Hogyeong Jeong

    E-Print Network [OSTI]

    Yorke-Smith, Neil

    Eye Gaze for Attention Prediction in Multimodal Human-Machine Conversation Zahar Prasov and Joyce Y psycholinguistic findings, we are currently examining how eye gaze contributes to au- tomated identification the contributing roles of various features that are extracted from eye gaze and the visual interface. More

  12. Collaborative Research: Focusing Attention to Improve the Performance of Citizen Science Systems -Beautiful Images and Perceptive Observers

    E-Print Network [OSTI]

    Crowston, Kevin

    Collaborative Research: Focusing Attention to Improve the Performance of Citizen Science Systems unable to replicate the successes of human pattern recognition. The growth of citizen science on the web-computational citizen science platform that combines the efforts of human classifiers with those of computational

  13. Developmental dyslexia: The Visual attention span deficit Marie-Line Bosse*, Marie Josphe Tainturier** and Sylviane Valdois*,

    E-Print Network [OSTI]

    Boyer, Edmond

    1 Developmental dyslexia: The Visual attention span deficit hypothesis Marie-Line Bosse*, Marie to developmental dyslexia, independently of a phonological disorder. In this study, this hypothesis was assessed. Overall, these findings support a multi-factorial view of developmental dyslexia. In many cases

  14. Abstract--Health management systems have been gaining substantial attentions in power engineering areas in recent years

    E-Print Network [OSTI]

    Chow, Mo-Yuen

    Abstract--Health management systems have been gaining substantial attentions in power engineering of the proposed health management systems. Index Terms--health management systems, power distribution systems will be used to illustrate the features of the proposed health management systems for power engineering

  15. In Press. To appear in A. Kramer, D. Wiegmann, & A. Kirlik (Eds.) Attention: From Theory to Practice. New York: Oxford.

    E-Print Network [OSTI]

    In Press. To appear in A. Kramer, D. Wiegmann, & A. Kirlik (Eds.) Attention: From Theory forgot to set the hydraulic pumps to the high position, which was part of the normal procedure of these accidents, but a central aspect of each accident was the failure of the crew #12;In Press. To appear in A

  16. State-of-the-Art in Visual Attention Modeling Ali Borji, Member, IEEE, and Laurent Itti, Member, IEEE

    E-Print Network [OSTI]

    Itti, Laurent

    biological plausibility of the computations, correlation with eye movement datasets, bottom- up and top-down attention, saliency, eye movements, regions of interest, gaze control, scene interpretation, visual search recognition or scene interpretation rely on data that has been transformed in such a way as to be tractable

  17. Lead, mercury, and cadmium exposure and attention deficit hyperactivity disorder in children

    SciTech Connect (OSTI)

    Kim, Stephani [Division of Epidemiology and Biostatistics, Department of Environmental Health, University of Cincinnati College of Medicine, Cincinnati, OH 45267 (United States)] [Division of Epidemiology and Biostatistics, Department of Environmental Health, University of Cincinnati College of Medicine, Cincinnati, OH 45267 (United States); Arora, Monica [Department of Psychiatry, Creighton University School of Medicine, Omaha, NE 68131 (United States)] [Department of Psychiatry, Creighton University School of Medicine, Omaha, NE 68131 (United States); Fernandez, Cristina [Department of Pediatrics, Creighton University School of Medicine, Omaha, NE 68131 (United States)] [Department of Pediatrics, Creighton University School of Medicine, Omaha, NE 68131 (United States); Landero, Julio; Caruso, Joseph [Metallomics Center, Department of Chemistry, University of Cincinnati, Cincinnati, OH 45221 (United States)] [Metallomics Center, Department of Chemistry, University of Cincinnati, Cincinnati, OH 45221 (United States); Chen, Aimin, E-mail: aimin.chen@uc.edu [Division of Epidemiology and Biostatistics, Department of Environmental Health, University of Cincinnati College of Medicine, Cincinnati, OH 45267 (United States)] [Division of Epidemiology and Biostatistics, Department of Environmental Health, University of Cincinnati College of Medicine, Cincinnati, OH 45267 (United States)

    2013-10-15T23:59:59.000Z

    Background: There is limited research examining the relationship between lead (Pb) exposure and medically diagnosed attention deficit hyperactivity disorder (ADHD) in children. The role of mercury (Hg) and cadmium (Cd) exposures in ADHD development is even less clear. Objectives: To examine the relationship between Pb, Hg, and Cd and ADHD in children living inside and outside a Lead Investigation Area (LIA) of a former lead refinery in Omaha, NE. Methods: We carried out a case-control study with 71 currently medically diagnosed ADHD cases and 58 controls from a psychiatric clinic and a pediatric clinic inside and outside of the LIA. The participants were matched on age group (5–8, 9–12 years), sex, race (African American or Caucasians and others), and location (inside or outside LIA). We measured whole blood Pb, total Hg, and Cd using inductively coupled plasma mass spectrometry. Results: Inside the LIA, the 27 cases had blood Pb geometric mean (GM) 1.89 µg/dL and the 41 controls had 1.51 µg/dL. Outside the LIA, the 44 cases had blood Pb GM 1.02 µg/dL while the 17 controls had 0.97 µg/dL. After adjustment for matching variables and maternal smoking, socioeconomic status, and environmental tobacco exposure, each natural log unit blood Pb had an odds ratio of 2.52 with 95% confidence interval of 1.07–5.92. Stratification by the LIA indicated similar point estimate but wider CIs. No associations were observed for Hg or Cd. Conclusions: Postnatal Pb exposure may be associated with higher risk of clinical ADHD, but not the postnatal exposure to Hg or Cd. -- Highlights: • Blood Pb levels are associated with ADHD diagnosis in children. • No association was found between blood Cd or Hg levels and ADHD. • Children living close to hazardous waste site need to reduce metal exposure.

  18. Solar receiver protection means and method for loss of coolant flow

    DOE Patents [OSTI]

    Glasgow, Lyle E. (Westlake Village, CA)

    1983-01-01T23:59:59.000Z

    An apparatus and method for preventing a solar receiver (12) utilizing a flowing coolant liquid for removing heat energy therefrom from overheating after a loss of coolant flow. Solar energy is directed to the solar receiver (12) by a plurality of reflectors (16) which rotate so that they direct solar energy to the receiver (12) as the earth rotates. The apparatus disclosed includes a first storage tank (30) for containing a first predetermined volume of the coolant and a first predetermined volume of gas at a first predetermined pressure. The first storage tank (30) includes an inlet and outlet through which the coolant can enter and exit. The apparatus also includes a second storage tank (34) for containing a second predetermined volume of the coolant and a second predetermined volume of the gas at a second predetermined pressure, the second storage tank (34) having an inlet through which the coolant can enter. The first and second storage tanks (30) and (34) are in fluid communication with each other through the solar receiver (12). The first and second predetermined coolant volumes, the first and second gas volumes, and the first and second predetermined pressures are chosen so that a predetermined volume of the coolant liquid at a predetermined rate profile will flow from the first storage tank (30) through the solar receiver (12) and into the second storage tank (34). Thus, in the event of a power failure so that coolant flow ceases and the solar reflectors (16) stop rotating, a flow rate maintained by the pressure differential between the first and second storage tanks (30) and (34) will be sufficient to maintain the coolant in the receiver (12) below a predetermined upper temperature until the solar reflectors (16) become defocused with respect to the solar receiver (12) due to the earth's rotation.

  19. Solar receiver protection means and method for loss of coolant flow

    DOE Patents [OSTI]

    Glasgow, L.E.

    1980-11-24T23:59:59.000Z

    An apparatus and method are disclosed for preventing a solar receiver utilizing a flowing coolant liquid for removing heat energy therefrom from overheating after a loss of coolant flow. Solar energy is directed to the solar receiver by a plurality of reflectors which rotate so that they direct solar energy to the receiver as the earth rotates. The apparatus disclosed includes a first storage tank for containing a first predetermined volume of the coolant and a first predetermined volume of gas at a first predetermined pressure. The first storage tank includes an inlet and outlet through which the coolant can enter and exit. The apparatus also includes a second storage tank for containing a second predetermined volume of the coolant and a second predetermined volume of the gas at a second predetermined pressure, the second storage tank having an inlet through which the coolant can enter. The first and second storage tanks are in fluid communication with each other through the solar receiver. The first and second predetermined coolant volumes, the first and second gas volumes, and the first and second predetermined pressures are chosen so that a predetermined volume of the coolant liquid at a predetermined rate profile will flow from the first storage tank through the solar receiver and into the second storage tank. Thus, in the event of a power failure so that coolant flow ceases and the solar reflectors stop rotating, a flow rate maintained by the pressure differential between the first and second storage tanks will be sufficient to maintain the coolant in the receiver below a predetermined upper temperature until the solar reflectors become defocused with respect to the solar receiver due to the earth's rotation.

  20. Sodium reflux pool-boiler solar receiver on-sun test results

    SciTech Connect (OSTI)

    Andraka, C E; Moreno, J B; Diver, R B; Moss, T A [Oak Ridge National Lab., TN (United States)] [Oak Ridge National Lab., TN (United States)

    1992-06-01T23:59:59.000Z

    The efficient operation of a Stirling engine requires the application of a high heat flux to the relatively small area occupied by the heater head tubes. Previous attempts to couple solar energy to Stirling engines generally involved directly illuminating the heater head tubes with concentrated sunlight. In this study, operation of a 75-kW{sub t} sodium reflux pool-boiler solar receiver has been demonstrated and its performance characterized on Sandia's nominal 75-kW{sub t} parabolic-dish concentrator, using a cold-water gas-gap calorimeter to simulate Stirling engine operation. The pool boiler (and more generally liquid-metal reflux receivers) supplies heat to the engine in the form of latent heat released from condensation of the metal vapor on the heater head tubes. The advantages of the pool boiler include uniform tube temperature, leading to longer life and higher temperature available to the engine, and decoupling of the design of the solar absorber from the engine heater head. The two-phase system allows high input thermal flux, reducing the receiver size and losses, therefore improving system efficiency. The receiver thermal efficiency was about 90% when operated at full power and 800{degree}C. Stable sodium boiling was promoted by the addition of 35 equally spaced artificial cavities in the wetted absorber surface. High incipient boiling superheats following cloud transients were suppressed passively by the addition of small amounts of xenon gas to the receiver volume. Stable boiling without excessive incipient boiling superheats was observed under all operating conditions. The receiver developed a leak during performance evaluation, terminating the testing after accumulating about 50 hours on sun. The receiver design is reported here along with test results including transient operations, steady-state performance evaluation, operation at various temperatures, infrared thermography, x-ray studies of the boiling behavior, and a postmortem analysis.

  1. Ohio State receives Obama-Singh award The Ohio State University is one of four U.S. universities to receive the highly competitive Obama-Singh 21st Century

    E-Print Network [OSTI]

    Nahar, Sultana Nurun

    Ohio State receives Obama-Singh award The Ohio State University is one of four U.S. universities to receive the highly competitive Obama-Singh 21st Century Knowledge Initiative award for its project-year period, Ohio State will receive approximately $250,000 to launch a pilot program with Aligarh Muslim

  2. Standard practice for evaluating absorptive solar receiver materials when exposed to conditions simulating stagnation in solar collectors with cover plates

    E-Print Network [OSTI]

    American Society for Testing and Materials. Philadelphia

    1986-01-01T23:59:59.000Z

    Standard practice for evaluating absorptive solar receiver materials when exposed to conditions simulating stagnation in solar collectors with cover plates

  3. Increasing the Efficiency of Energy Scavengers

    E-Print Network [OSTI]

    Shahram M. Shahruz

    2007-09-26T23:59:59.000Z

    In this paper, a methodology for designing efficient energy scavengers is proposed. The scavenger consists of a cantilever beam on which piezoelectric films and a mass are mounted. The mass at the tip of the beam is known as the proof mass and the device is called either an energy scavenger or a beam-mass system. The proof mass is a permanent magnet, where in its vicinity attracting permanent magnets are placed. It is shown that when the magnets have appropriate strengths and are placed appropriately, the vibration of the beam-mass system can be amplified, thereby the scavenged energy is increased. Examples are given throughout the paper.

  4. Increasing thermoelectric efficiency towards the Carnot limit

    E-Print Network [OSTI]

    Giulio Casati; Carlos Mejia-Monasterio; Tomaz Prosen

    2008-02-27T23:59:59.000Z

    We study the problem of thermoelectricity and propose a simple microscopic mechanism for the increase of thermoelectric efficiency. We consider the cross transport of particles and energy in open classical ergodic billiards. We show that, in the linear response regime, where we find exact expressions for all transport coefficients, the thermoelectric efficiency of ideal ergodic gases can approach Carnot efficiency for sufficiently complex charge carrier molecules. Our results are clearly demonstrated with a simple numerical simulation of a Lorentz gas of particles with internal rotational degrees of freedom.

  5. Increasing jet entrainment, mixing and spreading

    DOE Patents [OSTI]

    Farrington, Robert B. (Wheatridge, CO)

    1994-01-01T23:59:59.000Z

    A free jet of air is disturbed at a frequency that substantially matches natural turbulences in the free jet to increase the entrainment, mixing, and spreading of air by the free jet, for example in a room or other enclosure. The disturbances are created by pulsing the flow of air that creates the free jet at the desired frequency. Such pulsing of the flow of air can be accomplished by sequentially occluding and opening a duct that confines and directs the flow of air, such as by rotating a disk on an axis transverse to the flow of air in the duct.

  6. Increasing jet entrainment, mixing and spreading

    DOE Patents [OSTI]

    Farrington, R.B.

    1994-08-16T23:59:59.000Z

    A free jet of air is disturbed at a frequency that substantially matches natural turbulences in the free jet to increase the entrainment, mixing, and spreading of air by the free jet, for example in a room or other enclosure. The disturbances are created by pulsing the flow of air that creates the free jet at the desired frequency. Such pulsing of the flow of air can be accomplished by sequentially occluding and opening a duct that confines and directs the flow of air, such as by rotating a disk on an axis transverse to the flow of air in the duct. 11 figs.

  7. Increasing water holding capacity for irrigation

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC) EnvironmentalGyroSolé(tm)HydrogenRFP » ImportantOfficeofofIncreasing water holding

  8. Increasing the Capacity of Existing Power Lines

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreaking of BlytheDepartment of Energy IRSJulyIncandescentIncreasing Solar

  9. P:\\Policy & Procedures\\EHS\\EH&S#16-Receiving dangerous goods-rev.doc Environmental Health & Safety

    E-Print Network [OSTI]

    Fernandez, Eduardo

    P:\\Policy & Procedures\\EHS\\EH&S#16-Receiving dangerous goods-rev.doc Environmental Health & Safety Policy & Procedure #16 TITLE: DANGEROUS GOODS RECEIVING POLICY OBJECTIVE AND PURPOSE: To ensure packages containing dangerous goods are properly received, stored and distributed to the FAU campus community

  10. An Analysis of the Risks of a Terrorist Attack on LNG Receiving Facilities in the United States

    E-Print Network [OSTI]

    Wang, Hai

    An Analysis of the Risks of a Terrorist Attack on LNG Receiving Facilities in the United States #12;An Analysis of the Risks of a Terrorist Attack on LNG Receiving Facilities in the United States 3-D Aerial View from Proposed SES LNG Receiving Facility Site to Downtown Long Beach [White line is 2

  11. Value of storage with increased renewable penetration.

    SciTech Connect (OSTI)

    Brainard, James Robert; Roach, Jesse Dillon

    2010-10-01T23:59:59.000Z

    The problem statement for this project is: (1) Renewable energy portfolio standards - (a) high penetration of intermittent and variable renewable generation on the grid, (b) utilities constrained by NERC Control Performance Standards, (c) requires additional resources to match generation with load; and (2) mitigation of impacts with energy storage - at what level of renewable penetration does energy storage become an attractive value proposition. Use a simplified, yet robust dispatch model that: (a) incorporates New Mexico Balance Area load and wind generation data, (b) distributes the load among a suite of generators, (c) quantifies increased generation costs with increased penetration of intermittent and variable renewable generation - fuel, startup, shut down, ramping, standby, etc., (d) tracks and quantifies NERC pentalties and violations, and (e) quantifies storage costs. Dispatch model has been constructed and it: (a) accurately distributes a load among a suite of generators, (b) quantifies duty cycle metrics for each of the generators - cumulative energy production, ramping and non ramping duration, spinning reserves, number of start-ups, and shut down durations, etc., (c) quantifies energy exchanges - cumulative exchanges, duration, and number of exchanges, (d) tracks ACE violations.

  12. Cloud cover increase with increasing aerosol absorptivity: A counterexample to the conventional semidirect aerosol effect

    E-Print Network [OSTI]

    humidity. The net effect is more low cloud cover with increasing aerosol absorption. The higher specific by dust radiative heating. Although in some areas our model exhibits a reduction of low cloud cover due are expected to have a similar effect. Citation: Perlwitz, J., and R. L. Miller (2010), Cloud cover increase

  13. Joint synchronization and calibration of multi-channel transform-domain charge sampling receivers

    E-Print Network [OSTI]

    Kotte Prakasam, Pradeep

    2010-07-14T23:59:59.000Z

    , the expansion coe?cients become the Fourier series coe?cients, hence, the receiver is referred to as the Frequency domain (FD) receiver. In each channel, the input signal is mixed with the basis signal and integrated in a window of duration Tc seconds... that cover the entire signal block provide a total of MN coe?cients R(m;n)jM?1m=0jN?1n=0 given by, Rm;n = Z mTs+Tc mTs x(t)'?n(t)dt; (1.1) where Ts = Tc ? Tov, x(t) is the received signal, m = 0 to M ? 1 indicates the mth segment in each channel and n = 0...

  14. Experiments and analysis on the molten-salt direct-contact absorption receiver concept

    SciTech Connect (OSTI)

    Bohn, M.S.; Wang, K.Y.

    1986-11-01T23:59:59.000Z

    This paper presents results of recent experiments on the Direct Absorption Receiver (DAR) concept using molten salt as the working fluid. The DAR concept may result in a solar central receiver that costs 50% less than the current tube receiver and has significantly lower operational and maintenance costs. These experiments were aimed at determining whether the DAR concept is technically feasible and were carried out at the Advanced Components Test Facility, Atlanta, GA. Results are based on several days of operating with solar flux ranging up to 50 W/cm/sup 2/ and also on a numerical model that is capable of predicting the thermal performance of the DAR salt film. Issues relating to thermal efficiency, absorber-to-salt heat transfer, and salt film stability are addressed.

  15. Pool boiler reflux solar receiver for Stirling dish-electric systems

    SciTech Connect (OSTI)

    Andraka, C.E.; Moreno, J.B.

    1989-01-01T23:59:59.000Z

    The feasibility of competitive, modular bulk electric power from the sun may be greatly enhanced by the use of a reflux heat pipe receiver to combine a heat engine such as Stirling with a paraboloidal dish concentrator. This combination represents a potential improvement over previous successful demonstrations of dish-electric technology in terms of enhanced performance, lower cost, longer life, and greater flexibility in engine design. There are, however, important issues and unknowns which must be addressed to determine engineering feasibility of these devices. In the pool boiler reflux receiver, concentrated solar radiation causes liquid metal (sodium or potassium) to boil. The vapor flows to the engine heater heads, where it condenses and releases the latent heat. The condensate is returned to the receiver absorber pool by gravity (refluxing). This is essentially an adaptation of heat pipe technology to the peculiar requirements of concentrated solar flux, and provides many advantages over conventional heated tube receiver technology. Boiling theory indicates that long-term stable boiling of liquid metal may be difficult to achieve. Laboratory scale experiments have been performed. Initial tests confirmed that boiling is unstable in a baseline boiler. Boiling stability was established after the addition of ''artificial cavities'' to the heated surface, and successful boiling of sodium was demonstrated for 100 hours. Other stabilizing influences may have been present, and will be discussed. The flux and geometry closely simulated a real receiver. The results of these tests are presented, along with the design of a full scale receiver for on-sun testing and considerations for long term operation. 15 refs., 10 figs.

  16. Increasing Returns and Economic Geography PaulKrugman

    E-Print Network [OSTI]

    of standard eco- nomic analysis. International trade theory, in particular, convention- ally treats nations-type models of locational competi- tion get a reasonable degree of attention in industrial organization that application of models and techniques derived from theoretical industrial organization now allows

  17. HP replacement program increases efficiency, protection

    SciTech Connect (OSTI)

    NONE

    1997-10-01T23:59:59.000Z

    For more than 50 years, compression equipment along the 2,000-mile Tennessee Gas Pipeline has been helping to supply natural gas needs for the Northeast. But increasing demand and a need for more environmentally safe equipment mean a major replacement program for the compressor stations that make the natural gas transmission possible. Today it is one of the longest gas pipelines in the world, carrying more than 1 Bcf/d of natural gas. New compression equipment is being installed to boost efficiency and meet more stringent environmental standards. In 1993, Tenneco Energy, purchased by El Paso Energy in December 1996, initiated a Horsepower Replacement Program intended to replace older, inefficient technology with more advanced equipment. A major objective was to improve operational effectiveness and to reduce harmful nitrogen oxide and carbon monoxide emissions by converting much of the machinery to electric-driven compression equipment.

  18. The growth of Tilapia aurea in ponds receiving laying hen wastes

    E-Print Network [OSTI]

    Burns, Robert Paul

    1978-01-01T23:59:59.000Z

    be seen in Figure 8. The most significant feature of this figure is the trace amounts of nitrates present in the pond receiving the wastes from 200 laying hens (A-10) during the month of August. Higher phyto- plankton densities in that pond (Figure 7...THE GROWTH OF TILAPIA AUREA IN PONDS RECEIVING LAYING HEN WASTES A Thesis by ROBERT PAUL BURNS Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of. MASTER OF SCIENCE December...

  19. Waste Receiving and Processing Facility Module 2A: Advanced Conceptual Design Report. Volume 2

    SciTech Connect (OSTI)

    Not Available

    1994-03-01T23:59:59.000Z

    This volume presents the Total Estimated Cost (TEC) for the WRAP (Waste Receiving and Processing) 2A facility. The TEC is $81.9 million, including an overall project contingency of 25% and escalation of 13%, based on a 1997 construction midpoint. (The mission of WRAP 2A is to receive, process, package, certify, and ship for permanent burial at the Hanford site disposal facilities the Category 1 and 3 contact handled low-level radioactive mixed wastes that are currently in retrievable storage, and are forecast to be generated over the next 30 years by Hanford, and waste to be shipped to Hanford site from about 20 DOE sites.)

  20. Do PV Systems Increase Residential Selling Prices If So, How Can Practitioners Estimate This Increase?

    E-Print Network [OSTI]

    Hoen, Ben

    2013-01-01T23:59:59.000Z

    No. DE-AC02-05CH11231. Do PV Systems Increase Residentialimpacts of photovoltaic (PV) energy systems on home salesthat existing homes with PV systems sold for a premium over

  1. Multivariable controller increased MTBE complex capacity

    SciTech Connect (OSTI)

    Robertson, D.; Peterson, T.J.; O`Connor, D. [DMC Corp., Houston, TX (United States); Payne, D.; Adams, V. [Valero Refining Co., Corpus Christi, TX (United States)

    1997-03-01T23:59:59.000Z

    Capacity increased by more than 4.6% when one dynamic matrix multivariable controller began operating in Valero Refining Company`s MTBE production complex in Corpus Christi, Texas. This was on a plant that was already running well above design capacity due to previously made process changes. A single controller was developed to cover an isobutane dehydrogenation (ID) unit and an MTBE reaction and fractionation plant with the intermediate isobutylene surge drum. The overall benefit is realized by a comprehensive constrained multivariable predictive controller that properly handles all sets of limits experienced by the complex, whether limited by the front-end ID or back-end MTBE units. The controller has 20 manipulated, 6 disturbance and 44 controlled variables, and covers widely varying dynamics with settling times ranging from twenty minutes to six hours. The controller executes each minute with a six hour time horizon. A unique achievement is intelligent surge drum level handling by the controller for higher average daily complex capacity as a whole. The ID unit often operates at simultaneous limits on reactor effluent compressor capacity, cold box temperature and hydrogen/hydrocarbon ratio, and the MTBE unit at impurity in butene column overhead as well as impurity in MTBE product. The paper discusses ether production, isobutane dehydrogenation, maximizing production, controller design, and controller performance.

  2. Coal liquefaction process with increased naphtha yields

    DOE Patents [OSTI]

    Ryan, Daniel F. (Friendswood, TX)

    1986-01-01T23:59:59.000Z

    An improved process for liquefying solid carbonaceous materials wherein the solid carbonaceous material is slurried with a suitable solvent and then subjected to liquefaction at elevated temperature and pressure to produce a normally gaseous product, a normally liquid product and a normally solid product. The normally liquid product is further separated into a naphtha boiling range product, a solvent boiling range product and a vacuum gas-oil boiling range product. At least a portion of the solvent boiling-range product and the vacuum gas-oil boiling range product are then combined and passed to a hydrotreater where the mixture is hydrotreated at relatively severe hydrotreating conditions and the liquid product from the hydrotreater then passed to a catalytic cracker. In the catalytic cracker, the hydrotreater effluent is converted partially to a naphtha boiling range product and to a solvent boiling range product. The naphtha boiling range product is added to the naphtha boiling range product from coal liquefaction to thereby significantly increase the production of naphtha boiling range materials. At least a portion of the solvent boiling range product, on the other hand, is separately hydrogenated and used as solvent for the liquefaction. Use of this material as at least a portion of the solvent significantly reduces the amount of saturated materials in said solvent.

  3. Obesity Increases the Risk of Chest Wall Pain From Thoracic Stereotactic Body Radiation Therapy

    SciTech Connect (OSTI)

    Welsh, James, E-mail: jwelsh@mdanderson.org [Department of Radiation Oncology, University of Texas M. D. Anderson Cancer Center, Houston, TX (United States); Thomas, Jimmy; Shah, Deep; Allen, Pamela K.; Wei, Xiong; Mitchell, Kevin [Department of Radiation Oncology, University of Texas M. D. Anderson Cancer Center, Houston, TX (United States); Gao, Song; Balter, Peter [Department of Radiation Physics, University of Texas M. D. Anderson Cancer Center, Houston, TX (United States); Komaki, Ritsuko; Chang, Joe Y. [Department of Radiation Oncology, University of Texas M. D. Anderson Cancer Center, Houston, TX (United States)

    2011-09-01T23:59:59.000Z

    Purpose: Stereotactic body radiation therapy (SBRT) is increasingly being used to treat thoracic tumors. We attempted here to identify dose-volume parameters that predict chest wall toxicity (pain and skin reactions) in patients receiving thoracic SBRT. Patients and Methods: We screened a database of patients treated with SBRT between August 2004 and August 2008 to find patients with pulmonary tumors within 2.5 cm of the chest wall. All patients received a total dose of 50 Gy in four daily 12.5-Gy fractions. Toxicity was scored according to the NCI-CTCAE V3.0. Results: Of 360 patients in the database, 265 (268 tumors) had tumors within <2.5 cm of the chest wall; 104 (39%) developed skin toxicity (any grade); 14 (5%) developed acute pain (any grade), and 45 (17%) developed chronic pain (Grade 1 in 22 cases [49%] and Grade 2 or 3 in 23 cases [51%]). Both skin toxicity and chest wall pain were associated with the V{sub 30}, or volume of the chest wall receiving 30 Gy. Body mass index (BMI) was also strongly associated with the development of chest pain: patients with BMI {>=}29 had almost twice the risk of chronic pain (p = 0.03). Among patients with BMI >29, diabetes mellitus was a significant contributing factor to the development of chest pain. Conclusion: Safe use of SBRT with 50 Gy in four fractions for lesions close to the chest wall requires consideration of the chest wall volume receiving 30 Gy and the patient's BMI and diabetic state.

  4. Attending to opportunity: an attention-based model of how boards of directors impact strategic entrepreneurship in established enterprise

    E-Print Network [OSTI]

    Tuggle, Christopher Scott

    2005-02-17T23:59:59.000Z

    and Board-Level Entrepreneurial Attention??...137 _______________ This dissertation follows the style and format of the Academy of Management Journal. 1 CHAPTER I INTRODUCTION Motivation and Research Questions Why Should We Study... creation. In their introduction to the recent Academy of Management Review: special issue on corporate governance, editors Daily, Dalton and Cannella (2003) state that ?directors? reticence to invite researchers into the ?black box? of boardroom...

  5. Collector Receiver Design for Data Collection and Localization in Sensor-driven Networks

    E-Print Network [OSTI]

    Madhow, Upamanyu

    Collector Receiver Design for Data Collection and Localization in Sensor-driven Networks Bharath is communicating, falls on a network of collector nodes which are perpetually monitoring transmissions from with minimal capabilities, while shifting the complexity to a network of collector nodes. While the philosophy

  6. UWB MISO Time Reversal With Energy Detector Receiver Over ISI Channels

    E-Print Network [OSTI]

    Qiu, Robert Caiming

    UWB MISO Time Reversal With Energy Detector Receiver Over ISI Channels Nan Guo, John Q. Zhang investigates a multiple input single output (MISO) time reversal system for ultra-wideband (UWB) communication channel model for antenna array related study. Numerical results suggest that the proposed MISO time

  7. Operational Monitoring of Weather Radar Receiving Chain Using the Sun IWAN HOLLEMAN

    E-Print Network [OSTI]

    Stoffelen, Ad

    Operational Monitoring of Weather Radar Receiving Chain Using the Sun IWAN HOLLEMAN Royal, is presented. The ``online'' method is entirely based on the analysis of sun signals in the polar volume data- termining the weather radar antenna pointing at low elevations using sun signals, and it is suited

  8. BlueLincs HMO Service Area Sorted by County To receive services, you

    E-Print Network [OSTI]

    Oklahoma, University of

    Mayes County McClain County McIntosh County All of Mayes County All of McClain County All of Mc Castle, Welty 74833 Clearview, Pharoah 74880 Paden 74860 Oklahoma County All of Oklahoma County OkmulgeeBlueLincs HMO Service Area Sorted by County To receive services, you must live or work in one

  9. Distributed Array of GPS Receivers for 3D Wind Profile Determination in Wind Farms

    E-Print Network [OSTI]

    Gao, Grace Xingxin

    Distributed Array of GPS Receivers for 3D Wind Profile Determination in Wind Farms Derek Chen, and inexpensively is critical for both optimizing the installation of wind turbines on a wind farm, and predicting. Finally, the system is tested on a local wind farm. It has been shown that GPS provides a viable method

  10. Five mining students will each receive a $10K Scholarship this year.

    E-Print Network [OSTI]

    Five mining students will each receive a $10K Scholarship this year. Here's how you could be one The WA Mining Club, in conjunction with industry co-sponsors, now offers five University Scholarships for the benefit of University students intending to work in the mining industry. These are known as the West

  11. The Career Center 13 Not eligible to receive academic credit for your internship?

    E-Print Network [OSTI]

    Mitchener, W. Garrett

    The Career Center 13 Not eligible to receive academic credit for your internship? Consider the CERTIFICATE INTERNSHIP PROGRAM! The Certificate Internship Program (CIP) offers you the ability to have your internship officially recognized by the College of Charleston's Career Center. With successful completion

  12. Calibration of the Joint European Torus energetic ion and alpha particle collective Thomson scattering diagnostic receiver

    E-Print Network [OSTI]

    Egedal, Jan

    Calibration of the Joint European Torus energetic ion and alpha particle collective Thomson is calibrated assuming blackbody emission from the torus vacuum vessel ~VV! and using electron cyclotron emission ~ECE!. The 32 receiver channels are absolutely calibrated with a mechanical chopper

  13. Calibration of the Joint European Torus energetic ion and alpha particle collective Thomson scattering diagnostic receiver

    E-Print Network [OSTI]

    Egedal, Jan

    Calibration of the Joint European Torus energetic ion and alpha particle collective Thomson Torus JET energetic ion and alpha particle collective Thomson scattering diagnostic is calibrated . The 32 receiver channels are absolutely calibrated with a mechanical chopper in the quasioptical arm

  14. Published in IET Generation, Transmission & Distribution Received on 8th July 2013

    E-Print Network [OSTI]

    Fu, Yong

    , in a practical power system, the transmission topology can change as a result of maintenance and network network topology in an electric power system. The modelling is accomplished in a coordinatedPublished in IET Generation, Transmission & Distribution Received on 8th July 2013 Revised on 31st

  15. Non-Coherent Amplify-and-Forward Generalized Likelihood Ratio Test Receiver

    E-Print Network [OSTI]

    Non-Coherent Amplify-and-Forward Generalized Likelihood Ratio Test Receiver Michael R. Souryal for the relay channel and evaluates its diversity performance for Rayleigh fading channels. We use the generalized likelihood ratio test to obtain the decision rule in closed form, independent of the fading

  16. angina receiving beta-blocker: Topics by E-print Network

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

    angina receiving beta-blocker First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 RECONSTRUCTIVE VASCULAR...

  17. Flux Distribution of a Single-Axis Tracking Parabolic Trough Array with Photovoltaic Receiver

    E-Print Network [OSTI]

    . With single-axis tracking the incident solar rays are not in general perpendicular to the trough. NonFlux Distribution of a Single-Axis Tracking Parabolic Trough Array with Photovoltaic Receiver G 0200 Australia E-mail: gregory.burgess@anu.edu.au Abstract Single-axis tracking parabolic troughs

  18. 23 -The Fringe On May 5, 1999, I received a pair of emails indicating

    E-Print Network [OSTI]

    Sitko, Michael L.

    was mysteriously lifted off the ground by a strange force during the event 3. received telepathic messages from the aliens 4. faced an alien eye-to-eye (this one was widely publicizes on TV at the time) The Mutual UFO

  19. THE EFFECT OF RECEIVER DIVERSITY COMBINING ON OPTIMUM ENERGY ALLOCATION AND ENERGY EFFICIENCY

    E-Print Network [OSTI]

    Brown III, Donald R.

    THE EFFECT OF RECEIVER DIVERSITY COMBINING ON OPTIMUM ENERGY ALLOCATION AND ENERGY EFFICIENCY the total energy · Effect of diversity combining techniques on energy efficiency and energy allocation information yr1 = |h|asx + wr1 Scenario Problem Statement · Optimum energy allocation strategy to minimize

  20. Gain and Equalization Adaptation to Optimize the Vertical Eye Opening in a Wireline Receiver

    E-Print Network [OSTI]

    Chan Carusone, Tony

    loss and skin-effect can severely limit a wireline receiver's ability to operate at high-speeds, Toronto, Ontario, Canada Abstract--A strategy for the adaptation of an equalizer and variable gain amplifier is presented. Both control signals are generated by examining the probability density function

  1. Modelling the convective flow in solar thermal receivers K.C. Yeh; G. Hughes & K. Lovegrove

    E-Print Network [OSTI]

    value energy conversions such as heat engine cycles or chemical process to be carried outModelling the convective flow in solar thermal receivers K.C. Yeh; G. Hughes & K. Lovegrove, Canberra AUSTRALIA E-mail: u3370739@anu.edu.au The natural convective flow inside a concentrating solar

  2. Modeling of a GSM-R receiving chain exposed to transient IEMIs

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Modeling of a GSM-R receiving chain exposed to transient IEMIs Souheir Mili, Virginie Deniau, DavidMagnetic Interference (IEMI) threats. In this paper we investigate GSM-R vulnerability to IEMI. These IEMIs consist- Transient (IEMI); GSM-R; vulnerability; BER. I. INTRODUCTION GSM-R is a European railway communication

  3. Analysis, design, and application of circularly polarized RF receiver antennas for magnetic resonance imaging

    E-Print Network [OSTI]

    Usey, Michael Christopher

    1995-01-01T23:59:59.000Z

    , an example coil will be designed for significantly improved SNR over the spine, with a minimum of added cost and complexity. The receiver antenna will be evaluated in both lab and clinical environments, with the results presented in this thesis. Further MRI...

  4. THREE-DIMENSIONAL FLUX PREDICTION FOR A DISH CONCENTRATOR CAVITY RECEIVER

    E-Print Network [OSTI]

    , for a particular cavity geometry, affects the temperature distribution on the cavity walls, and the location-dimensional flux distribution in the focal region, in particular as an aid to receiver design. Inputs to the ray error on the completed dish. On-sun flux mapping of the image produced by individual mirror panels gave

  5. Fuel-producing Geobacter receives support from new research May 3rd, 2010 in Technology / Energy

    E-Print Network [OSTI]

    Lovley, Derek

    genetically modified the Geobacter bacterium so that it acts like a reverse fuel cell, using electricity electricity, Geobacter could be used as a microbial fuel cell, converting organic waste matter - includingFuel-producing Geobacter receives support from new research grant May 3rd, 2010 in Technology

  6. What is the Probability of Receiving a US Patent?* Michael Carley

    E-Print Network [OSTI]

    Sekhon, Jasjeet S.

    1 What is the Probability of Receiving a US Patent?* Michael Carley , Deepak Hegde,§ and Alan Marco** January 10, 2014 ABSTRACT We follow the prosecution histories of the 2.15 million new patent applications filed at the US Patent and Trademark Office between 1996 and 2005 to calculate patent allowance rates

  7. Project management plan, Waste Receiving and Processing Facility, Module 1, Project W-026

    SciTech Connect (OSTI)

    Starkey, J.G.

    1993-05-01T23:59:59.000Z

    The Hanford Waste Receiving and Processing Facility Module 1 Project (WRAP 1) has been established to support the retrieval and final disposal of approximately 400K grams of plutonium and quantities of hazardous components currently stored in drums at the Hanford Site.

  8. 1 MWt bench model solar receiver test program J. Gintz, D. Bartlett and R. Zentner

    E-Print Network [OSTI]

    Boyer, Edmond

    and solar testing of a cavity receiver using metal gas-in-tube heat exchangers. The design represents performed to derive the required high quality in heat exchanger panels. Subcontractors skilled in steel and groups of heliostats. First solar heating was accomplished on October 27, 1978. The test program

  9. Network Code Design from Unequal Error Protection Coding: Channel-Aware Receiver Design and Diversity Analysis

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Network Code Design from Unequal Error Protection Coding: Channel-Aware Receiver Design.iezzi, fabio.graziosi}@univaq.it Abstract-- In this paper, we propose Unequal Error Protection (UEP) coding theory as a viable and flexible method for the design of network codes for multi­source multi­relay

  10. Progress and Trends in Multi-Gbps Optical Receivers with CMOS Integrated Photodetectors

    E-Print Network [OSTI]

    Chan Carusone, Tony

    1 Progress and Trends in Multi-Gbps Optical Receivers with CMOS Integrated Photodetectors Anthony of Toronto Toronto, Canada Abstract--There has been significant recent progress towards the realization airflow for cooling in rack-mounted equipment and their light weight eliminates the mechanical stresses

  11. A low power, high dynamic-range, broadband variable gain amplifier for an ultra wideband receiver 

    E-Print Network [OSTI]

    Chen, Lin

    2007-09-17T23:59:59.000Z

    is designed for high frequency and low power communication applications, such as an Ultra Wideband (UWB) receiver system. The gain can be programmed from 0dB to 42dB in 2dB increments with -3dB bandwidth greater than 425MHz for the entire range of gain. The 3...

  12. JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. 16, NO. 1, JANUARY 1998 119 Transimpedance Receiver Design

    E-Print Network [OSTI]

    Esener, Sadik C.

    . A comparison with the circuit noise limited optical power indicates that, for digital computing applications be classified as high-impedance, tran- simpedance, and low-impedance, depending on the preampli- fier design. Transimpedance receivers are a popular choice due to their high bandwidth, low noise, and ease of bi- asing [2

  13. Published in IET Information Security Received on 10th December 2009

    E-Print Network [OSTI]

    Ansari, Nirwan

    Published in IET Information Security Received on 10th December 2009 Revised on 19th March 2010 doi: 10.1049/iet-ifs.2009.0261 Special Issue on Multi-Agent & Distributed Information Security ISSN 1751-8709 Survey of security services on group communications P. Sakarindr N. Ansari Advanced Networking Laboratory

  14. An analog approach to interference suppression in ultra-wideband receivers

    E-Print Network [OSTI]

    Fischer, Timothy W.

    2007-09-17T23:59:59.000Z

    are presented, and a solution is proposed. To combat interference in Multi-Band OFDM (MB-OFDM) UWB systems, an analog notch filter is designed to be included in the UWB receive chain. The architecture of the filter is based on feed-forward subtraction...

  15. UM Computer Science 2014-2015 Health History Form & Permission to Receive First Aid

    E-Print Network [OSTI]

    Chu, Xi

    UM Computer Science 2014-2015 Health History Form & Permission to Receive First Aid Name of an accident while participating in the UM Computer Science program. Therefore, before you fill out this form permission for any representatives of the UM Computer Science program or The University of Montana to render

  16. Globecom 2012, Anaheim, California, USA, December 2012 Hemispherical Lens Based Imaging Receiver for

    E-Print Network [OSTI]

    Sekercioglu, Y. Ahmet

    density is also calculated to show the received optical power distributions for the case of four LED.Sekercioglu, Jean.Armstrong}@monash.edu Abstract--White lighting LED based systems are emerging as an important form significant spatial diversity for typical MIMO visible light scenarios. Numerical results are provided

  17. Receive care that is free from discrimination. This means that you should not be treated differently

    E-Print Network [OSTI]

    Pevsner, Jonathan

    care. · Free from mental, physical, sexual, and verbal abuse, neglect, and exploitation. · Any claimsReceive care that is free from discrimination. This means that you should not be treated your care. This includes information: · In your preferred language. · In a way that meets your

  18. Efficient Transmitters and Receivers for High-Power Wireless Powering Systems

    E-Print Network [OSTI]

    Popovic, Zoya

    Efficient Transmitters and Receivers for High-Power Wireless Powering Systems Zoya Popovic, Tibault of a wireless powering system is maximized when the power transmitter power-added efficiency (PAE), power system, which is valid for any type of wireless power coupling. Experimental results for high

  19. Published in IET Microwaves, Antennas & Propagation Received on 26th November 2012

    E-Print Network [OSTI]

    Tentzeris, Manos

    for wireless power transfer and localisation, energy harvesting circuits and nanocarbon-based gasPublished in IET Microwaves, Antennas & Propagation Received on 26th November 2012 Revised on 16th for the development of microwave circuits and components. Inkjet- printing technology of conductive silver

  20. SECRET SHARING SCHEMES 679 Received May 13, 1997; accepted March 10, 1998.

    E-Print Network [OSTI]

    Shieh, Shiuhpyng Winston

    SECRET SHARING SCHEMES 679 Received May 13, 1997; accepted March 10, 1998. Communicated by Jean) Constructing Perfect Secret Sharing Schemes for General And Uniform Access Structures HUNG-MIN SUN AND SHIUH secret sharing scheme allows a secret K to be shared among a set of partici- pants in such a way

  1. EXIT Chart Analysis of Turbo-BLAST Receivers in Rayleigh Fading Channels

    E-Print Network [OSTI]

    Dai, Huaiyu

    EXIT Chart Analysis of Turbo-BLAST Receivers in Rayleigh Fading Channels Wenjun Li and Huaiyu Dai: Wli5@ncsu.edu, Huaiyu Dai@ncsu.edu Abstract-- Turbo-BLAST is an advanced space-time layered with Turbo-BLAST to combat the co-channel interference (CCI) and significantly improve the performance

  2. Theory of Magneto-Mechanical Systems as Applied to Telephone Receivers and Similar Structures

    E-Print Network [OSTI]

    Allen, Jont

    all practical problems in the opera tion of the various types of telephone receivers as transformers with one degree of freedom by a bending of its supports with respect to the support or core of members Nos, or with a motion having a definite linear relation to the movement of No. 4. Fig. 1 illustrates schematic ally

  3. Steam System Efficiency Optimized After J.R. Simplot Fertilizer Plant Receives Energy Assessment

    SciTech Connect (OSTI)

    Not Available

    2008-07-01T23:59:59.000Z

    This case study describes how the J.R. Simplot company's Don Plant in Pocatello, Idaho, achieved annual savings of $335,000 and 75,000 MMBtu, with a simple payback of 6.5 months, after receiving a DOE Save Energy Now energy assessment.

  4. INFLUENCES OF RAKE RECEIVER/TURBO DECODER PARAMETERS ON ENERGY CONSUMPTION AND QUALITY

    E-Print Network [OSTI]

    Al Hanbali, Ahmad

    INFLUENCES OF RAKE RECEIVER/TURBO DECODER PARAMETERS ON ENERGY CONSUMPTION AND QUALITY Lodewijk T are selected and their influences on the energy consumption and quality are investigated by means power hardware is needed to save energy consumption. Furthermore, an adequate quality of the wireless

  5. Current Zoology 60 (4): 429437, 2014 Received Sep. 16, 2013; accepted Nov. 9, 2013.

    E-Print Network [OSTI]

    Carrascal, Luis M.

    Current Zoology 60 (4): 429­437, 2014 Received Sep. 16, 2013; accepted Nov. 9, 2013. Corresponding those related to cold episodes. Winter cold spells might imperil the energy balance of small passerines by the cold wave that hit Europe in February 2012. We monitored temperature, wind and the relative abundance

  6. Vision Research special issue on ``Visual attention'' This is the first of two parts of a special issue on the topic of

    E-Print Network [OSTI]

    Carrasco, Marisa

    in this special issue are based on the Third International Workshop in Visual Attention that took place in October 2011 at the University of Allahabad in India. The International Workshops on Visual Attention bring together scien- tists with different approaches ­psychophysics, electrophysiology, neuroimaging

  7. 5 Valdes-Sosa, M. et al. (2000) Attention to object files defined by transparent motion. J. Exp. Psychol. Hum. Percept. Perform. 26, 488505

    E-Print Network [OSTI]

    Bremen, Universität

    5 Valdes-Sosa, M. et al. (2000) Attention to object files defined by transparent motion. J. Exp. Psychol. Hum. Percept. Perform. 26, 488­505 6 Fallah, M. et al. (2007) Stimulus-specific competitive motion repulsion. Vision Res. 46, 3651­3658 9 Sa`enz, M. et al. (2003) Global feature-based attention

  8. Mass transport, corrosion, plugging, and their reduction in solar dish/Stirling heat pipe receivers

    SciTech Connect (OSTI)

    Adkins, D.R.; Andraka, C.E.; Bradshaw, R.W.; Goods, S.H.; Moreno, J.B.; Moss, T.A.

    1996-07-01T23:59:59.000Z

    Solar dish/Stirling systems using sodium heat pipe receivers are being developed by industry and government laboratories here and abroad. The unique demands of this application lead to heat pipe wicks with very large surface areas and complex three-dimensional flow patterns. These characteristics can enhance the mass transport and concentration of constituents of the wick material, resulting in wick corrosion and plugging. As the test times for heat pipe receivers lengthen, we are beginning to see these effects both indirectly, as they affect performance, and directly in post-test examinations. We are also beginning to develop corrective measures. In this paper, we report on our test experiences, our post-test examinations, and on our initial effort to ameliorate various problems.

  9. Solar receiver heliostat reflector having a linear drive and position information system

    DOE Patents [OSTI]

    Horton, Richard H. (Schenectady, NY)

    1980-01-01T23:59:59.000Z

    A heliostat for a solar receiver system comprises an improved drive and control system for the heliostat reflector assembly. The heliostat reflector assembly is controllably driven in a predetermined way by a light-weight drive system so as to be angularly adjustable in both elevation and azimuth to track the sun and efficiently continuously reflect the sun's rays to a focal zone, i.e., heat receiver, which forms part of a solar energy utilization system, such as a solar energy fueled electrical power generation system. The improved drive system includes linear stepping motors which comprise low weight, low cost, electronic pulse driven components. One embodiment comprises linear stepping motors controlled by a programmed, electronic microprocessor. Another embodiment comprises a tape driven system controlled by a position control magnetic tape.

  10. Laser warning receiver to identify the wavelength and angle of arrival of incident laser light

    DOE Patents [OSTI]

    Sinclair; Michael B. (Albuquerque, NM); Sweatt, William C. (Albuquerque, NM)

    2010-03-23T23:59:59.000Z

    A laser warning receiver is disclosed which has up to hundreds of individual optical channels each optically oriented to receive laser light from a different angle of arrival. Each optical channel has an optical wedge to define the angle of arrival, and a lens to focus the laser light onto a multi-wavelength photodetector for that channel. Each multi-wavelength photodetector has a number of semiconductor layers which are located in a multi-dielectric stack that concentrates the laser light into one of the semiconductor layers according to wavelength. An electrical signal from the multi-wavelength photodetector can be processed to determine both the angle of arrival and the wavelength of the laser light.

  11. Waste Receiving and Processing (WRAP) Facility Final Safety Analysis Report (FSAR)

    SciTech Connect (OSTI)

    TOMASZEWSKI, T.A.

    2000-04-25T23:59:59.000Z

    The Waste Receiving and Processing Facility (WRAP), 2336W Building, on the Hanford Site is designed to receive, confirm, repackage, certify, treat, store, and ship contact-handled transuranic and low-level radioactive waste from past and present U.S. Department of Energy activities. The WRAP facility is comprised of three buildings: 2336W, the main processing facility (also referred to generically as WRAP); 2740W, an administrative support building; and 2620W, a maintenance support building. The support buildings are subject to the normal hazards associated with industrial buildings (no radiological materials are handled) and are not part of this analysis except as they are impacted by operations in the processing building, 2336W. WRAP is designed to provide safer, more efficient methods of handling the waste than currently exist on the Hanford Site and contributes to the achievement of as low as reasonably achievable goals for Hanford Site waste management.

  12. Preliminary design of the Carrisa Plains solar central receiver power plant. Volume I. Executive summary

    SciTech Connect (OSTI)

    Not Available

    1983-12-31T23:59:59.000Z

    The design of the 30 MWe central receiver solar power plant to be located at Carrisa Plains, San Luis Obispo County, California, is summarized. The plant uses a vertical flat-panel (billboard) solar receiver located at the top of a tower to collect solar energy redirected by approximately 1900 heliostats located to the north of the tower. The solar energy is used to heat liquid sodium pumped from ground level from 610 to 1050/sup 0/F. The power conversion system is a non-reheat system, cost-effective at this size level, and designed for high-efficiency performance in an application requiring daily startup. Successful completion of this project will lead to power generation starting in 1986. This report also discusses plant performance, operations and maintenance, development, and facility cost estimate and economic analysis.

  13. INL receives GreenGov Presidential Award for fleet fuel efficiency improvements

    SciTech Connect (OSTI)

    None

    2010-01-01T23:59:59.000Z

    Idaho National Laboratory has received a 2010 GreenGov Presidential Award for outstanding achievement in fuel efficiency in its bus and automotive fleets. The award was presented today in Washington, D.C., as part of a three-day symposium on improving sustainability and energy efficiency across the federal government. Lots more content like this is available at INL's facebook page http://www.facebook.com/idahonationallaboratory.

  14. Design, construction, and testing of the direct absorption receiver panel research experiment

    SciTech Connect (OSTI)

    Chavez, J.M.; Rush, E.E.; Matthews, C.W.; Stomp, J.M.; Imboden, J.; Dunkin, S.

    1990-01-01T23:59:59.000Z

    A panel research experiment (PRE) was designed, built, and tested as a scaled-down model of a direct absorption receiver (DAR). The PRE is a 3-MW{sub t}DAR experiment that will allow flow testing with molten nitrate salt and provide a test bed for DAR testing with actual solar heating. In a solar central receiver system DAR, the heat absorbing fluid (a blackened molten nitrate salt) flows in a thin film down a vertical panel (rather than through tubes as in conventional receiver designs) and absorbs the concentrated solar flux directly. The ability of the flowing salt film to absorb flux directly. The ability of the flowing salt film to absorb the incident solar flux depends on the panel design, hydraulic and thermal fluid flow characteristics, and fluid blackener properties. Testing of the PRE is being conducted to demonstrate the engineering feasibility of the DAR concept. The DAR concept is being investigated because it offers numerous potential performance and economic advantages for production of electricity when compared to other solar receiver designs. The PRE utilized a 1-m wide by 6-m long absorber panel. The salt flow tests are being used to investigate component performance, panel deformations, and fluid stability. Salt flow testing has demonstrated that all the DAR components work as designed and that there are fluid stability issues that need to be addressed. Future solar testing will include steady-state and transient experiments, thermal loss measurements, responses to severe flux and temperature gradients and determination of peak flux capability, and optimized operation. In this paper, we describe the design, construction, and some preliminary flow test results of the Panel Research Experiment. 11 refs., 8 figs., 2 tabs.

  15. Heat Transfer Analysis and Modeling of a Parabolic Trough Solar Receiver Implemented in Engineering Equation Solver

    SciTech Connect (OSTI)

    Forristall, R.

    2003-10-01T23:59:59.000Z

    This report describes the development, validation, and use of a heat transfer model implemented in Engineering Equation Solver. The model determines the performance of a parabolic trough solar collector's linear receiver, also called a heat collector element. All heat transfer and thermodynamic equations, optical properties, and parameters used in the model are discussed. The modeling assumptions and limitations are also discussed, along with recommendations for model improvement.

  16. INL receives GreenGov Presidential Award for fleet fuel efficiency improvements

    ScienceCinema (OSTI)

    None

    2013-05-28T23:59:59.000Z

    Idaho National Laboratory has received a 2010 GreenGov Presidential Award for outstanding achievement in fuel efficiency in its bus and automotive fleets. The award was presented today in Washington, D.C., as part of a three-day symposium on improving sustainability and energy efficiency across the federal government. Lots more content like this is available at INL's facebook page http://www.facebook.com/idahonationallaboratory.

  17. How much can I qualify for? An eligible student may receive a SMART award of up

    E-Print Network [OSTI]

    Rosen, Jay

    How much can I qualify for? An eligible student may receive a SMART award of up to $4,000 for each.260.5700 ACHIEVERS NEW YORK CITY COLLEGE OF TECHNOLOGY CITY TECH O F F I C E O F F I N A N C I A L A I D ACHIEVE. Under the National SMART Grant program, CUNY will identify Pell eligible federal student aid recipients

  18. Report on audit of Department of Energy`s contractor salary increase fund

    SciTech Connect (OSTI)

    NONE

    1997-04-04T23:59:59.000Z

    The Department of Energy (Department) uses contractors to operate its facilities and compensates contractor employees based on their skills, complexity of jobs, and work performance. Thirty-one of the Department`s major contractors reported a total payroll of $4.3 billion and $4.4 billion during 1994 and 1995, respectively. The 31 contractors also reported awarding salary increases of $18 million for 1994 and $200 million for 1995. The purpose of the audit was to review the process used to determine and approve the amount of salary increases for contractor employees. The specific audit objective was to determine whether salary increases received by contractor employees were in accordance with Departmental policies and procedures. The Department of Energy Acquisition Regulation (DEAR) requires that contractor salary actions be within specific limitations, supportable, and approved prior to incurrence of costs. In addition, the Secretary of Energy imposed a 1 year salary freeze on the merit portion of management and operating contractor employee salaries for each contractor`s Fiscal Year 1994 compensation year. However, a fund for promotions and adjustments was approved but limited to 0.5 percent of payroll for the year. A review of eight major contractors showed that six complied with the Department`s policies on salary increases. The other two gave salary increases that were not always in accordance with Departmental policies. This resulted in both contractors not fully complying with the pay freeze in 1994 and exceeding their salary increase fund budgets in 1995. If these two contractors had implemented Department and contract requirements and contracting officers had properly performed their contract administrative responsibilities concerning salary increase funds, both contractors would have frozen salary increases and would not have exceeded their annual budgets.

  19. Comparison of fixed asymmetrical and symmetrical reflectors for evacuated tube solar receivers

    SciTech Connect (OSTI)

    Mills, D.R.; Monger, A. (Univ. of Sydney (Australia)); Morrison, G.L. (Univ. of New South Wales, Sydney (Australia))

    1994-07-01T23:59:59.000Z

    A computer simulation of the relative performance of certain truncated symmetrical and asymmetrical fixed reflector designs for solar energy collection was performed. The comparison was on the basis of annual energy delivered to a circular cylindrical evacuated tube receiver per unit of mirror area, but seasonal load information was also included to determine possible seasonal load matching advantages of one type of collector over another when storage is employed. Circumsolar radiation models based on recent correlations in the literature was included. Major conclusions were that: (1) Annual solar fractions of between 80% and 95% seem to be feasible with a load matching collector used with moderate energy storage, with 80-90% being a likely optimum; (2) CPC reflectors always gave the best annual output performance per unit of mirror area, and the lowest receiver area for situations of constant annual load, regardless of whether the storage is included in the system; (3) Asymmetrical concentrator are more cost-effective for strongly seasonally asymmetrical load patterns; (4) Fixed parabolic systems required much more receiver area than the symmetrical CPC and asymmetrical system investigated; (5) Concentration levels utilizable in fixed systems are higher than previously supposed, with 3.5:1 in an asymmetrical reflector being optimal or nearly optimal for the domestic load pattern used in the study; (6) Using a load matched reflector, the amount of storage required to achieve solar fractions of total thermal energy (space heating, water heating, clothes drying) above 90% in a residence appears to be much lower than previously thought.

  20. Improved power efficiency for very-high-temperature solar-thermal-cavity receivers

    DOE Patents [OSTI]

    McDougal, A.R.; Hale, R.R.

    1982-04-14T23:59:59.000Z

    This invention is an improved solar energy cavity receiver for exposing materials and components to high temperatures. The receiver includes a housing having an internal reflective surface defining a cavity and having an inlet for admitting solar radiation thereto. A photothermal absorber is positiond in the cavity to receive radiation from the inlet. A reflective baffle is positioned between the absorber and the inlet to severely restrict the re-radiation of energy through the inlet. The front surface of the baffle defines a narrow annulus with the internal reflective surface of the housing. The front surface of the baffle is contoured to reflect incoming radiation onto the internal surface of the housing, from which it is reflected through the annulus and onto the front surface of the absorber. The back surface of the baffle intercepts radiation from the front of the absorber. With this arrangement, a high percentage of the solar power input is retained in the cavity; thus, high internal temperatues are attained.

  1. Smart Museum of Art receives the single largest foundation gift in its history The University of Chicago's Smart Museum of Art received a $1.25 million grant from the

    E-Print Network [OSTI]

    He, Chuan

    Smart Museum of Art receives the single largest foundation gift in its history The University of Chicago's Smart Museum of Art received a $1.25 million grant from the Andrew W. Mellon Foundation in order,000 was spendable funds, used while the Smart Museum secured matching funds in the form of a $750,000 bequest from

  2. Edinburgh Research Explorer Pulmonary diesel particulate increases susceptibility to

    E-Print Network [OSTI]

    Millar, Andrew J.

    Edinburgh Research Explorer Pulmonary diesel particulate increases susceptibility to myocardial, MR & Gray, GA 2014, 'Pulmonary diesel particulate increases susceptibility to myocardial ischemia. Pulmonary diesel particulate increases susceptibility to myocardial ischemia/reperfusion injury via

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    E-Print Network [OSTI]

    California at Santa Cruz, University of

    as the record of human experience isbroadanddeep,bothbypreservationandworktobringinto view elements that might acknowledged here, increase our understanding of the human experience and encourage us to reflect critically `thank you' for the wonderful humanities education that I received at UCSC." "My experience

  4. Photocytotoxicity of a New Rh2(II,II) Complex: Increase in Cytotoxicity upon Irradiation Similar to That of PDT Agent Hematoporphyrin

    E-Print Network [OSTI]

    Turro, Claudia

    Photocytotoxicity of a New Rh2(II,II) Complex: Increase in Cytotoxicity upon Irradiation Similar, Texas 77842, and Food and Drug Administration, College Park, Maryland 20740 Received January 17, 2005- calating complex 1 towards Hs-27 human skin cells in the dark and upon irradiation with visible light

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

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    Office of Environmental Management (EM)

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    Energy Savers [EERE]

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

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    Office of Scientific and Technical Information (OSTI)

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

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

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

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    Office of Environmental Management (EM)

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    Office of Environmental Management (EM)

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  15. Oregon Institute of Technology Recognized for Increasing its...

    Office of Environmental Management (EM)

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    Office of Environmental Management (EM)

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

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