National Library of Energy BETA

Sample records for virtual impactor cvi

  1. Virtual impactor

    DOE Patents [OSTI]

    Yeh, Hsu-Chi (Albuquerque, NM); Chen, Bean T. (Albuquerque, NM); Cheng, Yung-Sung (Albuquerque, NM); Newton, George J. (Albuquerque, NM)

    1988-08-30

    A virtual impactor having improved efficiency and low wall losses in which a core of clean air is inserted into the aerosol flow while aerosol flow is maintained adjacent inner wall surfaces of the focusing portion of the impactor. The flow rate of the core and the length of the throat of the impactor's collection probe, as well as the dimensional relationships of other components of the impactor adjacent the separation region of the impactor, are selected to optimize separation efficiency.

  2. Virtual impactor

    DOE Patents [OSTI]

    Yeh, H.C.; Chen, B.T.; Cheng, Y.S.; Newton, G.J.

    1988-08-30

    A virtual impactor is described having improved efficiency and low wall losses in which a core of clean air is inserted into the aerosol flow while aerosol flow is maintained adjacent to the inner wall surfaces of the focusing portion of the impactor. The flow rate of the core and the length of the throat of the impactor's collection probe, as well as the dimensional relationships of other components of the impactor adjacent the separation region of the impactor, are selected to optimize separation efficiency. 4 figs.

  3. High efficiency virtual impactor

    DOE Patents [OSTI]

    Loo, B.W.

    1980-03-27

    Environmental monitoring of atmospheric air is facilitated by a single stage virtual impactor for separating an inlet flow (Q/sub 0/) having particulate contaminants into a coarse particle flow (Q/sub 1/) and a fine particle flow (Q/sub 2/) to enable collection of such particles on different filters for separate analysis. An inlet particle acceleration nozzle and coarse particle collection probe member having a virtual impaction opening are aligned along a single axis and spaced apart to define a flow separation region at which the fine particle flow (Q/sub 2/) is drawn radially outward into a chamber while the coarse particle flow (Q/sub 1/) enters the virtual impaction opening.

  4. High efficiency virtual impactor

    DOE Patents [OSTI]

    Loo, Billy W. (Oakland, CA)

    1981-01-01

    Environmental monitoring of atmospheric air is facilitated by a single stage virtual impactor (11) for separating an inlet flow (Q.sub.O) having particulate contaminants into a coarse particle flow (Q.sub.1) and a fine particle flow (Q.sub.2) to enable collection of such particles on different filters (19a, 19b) for separate analysis. An inlet particle acceleration nozzle (28) and coarse particle collection probe member (37) having a virtual impaction opening (41) are aligned along a single axis (13) and spaced apart to define a flow separation region (14) at which the fine particle flow (Q.sub.2) is drawn radially outward into a chamber (21) while the coarse particle flow (Q.sub.1) enters the virtual impaction opening (41). Symmetrical outlet means (47) for the chamber (21) provide flow symmetry at the separation region (14) to assure precise separation of particles about a cutpoint size and to minimize losses by wall impaction and gravitational settling. Impulse defocusing means (42) in the probe member (37) provides uniform coarse particle deposition on the filter (19a) to aid analysis. Particle losses of less than 1% for particles in the 0 to 20 micron range may be realized.

  5. ARM - Campaign Instrument - cvi

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

    govInstrumentscvi Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : NCAR Counterflow Virtual Impactor (CVI)...

  6. ARM - Campaign Instrument - cvi-air

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

    would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Counterflow Virtual Impactor (CVI-AIR) Instrument Categories Airborne...

  7. Environmental continuous air monitor inlet with combined preseparator and virtual impactor

    DOE Patents [OSTI]

    Rodgers, John C. (Santa Fe, NM)

    2007-06-19

    An inlet for an environmental air monitor is described wherein a pre-separator interfaces with ambient environment air and removes debris and insects commonly associated with high wind outdoors and a deflector plate in communication with incoming air from the pre-separator stage, that directs the air radially and downward uniformly into a plurality of accelerator jets located in a manifold of a virtual impactor, the manifold being cylindrical and having a top, a base, and a wall, with the plurality of accelerator jets being located in the top of the manifold and receiving the directed air and accelerating directed air, thereby creating jets of air penetrating into the manifold, where a major flow is deflected to the walls of the manifold and extracted through ports in the walls. A plurality of receiver nozzles are located in the base of the manifold coaxial with the accelerator jets, and a plurality of matching flow restrictor elements are located in the plurality of receiver nozzles for balancing and equalizing the total minor flow among all the plurality of receiver nozzles, through which a lower, fractional flow extracts large particle constituents of the air for collection on a sample filter after passing through the plurality of receiver nozzles and the plurality of matching flow restrictor elements.

  8. Low pressure drop, multi-slit virtual impactor

    DOE Patents [OSTI]

    Bergman, Werner (Livermore, CA)

    2002-01-01

    Fluid flow is directed into a multiplicity of slit nozzles positioned so that the fluid flow is directed into a gap between the nozzles and (a) a number of receiving chambers and (b) a number of exhaust chambers. The nozzles and chambers are select so that the fluid flow will be separated into a first particle flow component with larger and a second particle flow component with the smaller particles.

  9. Cascade impactor and jet plate for same

    DOE Patents [OSTI]

    Dahlin, Robert S.; Farthing, William E.; Landham Jr., Edward C.

    2004-02-03

    A sampling system and method for sampling particulate matter from a high-temperature, high-pressure gas stream. A cyclone sampler for use at high temperatures and pressures, and having threadless sacrificial connectors is disclosed. Also disclosed is an improved cascade impactor including jet plates with integral spacers, and alignment features provided for aligning the jet plates with their associated collection substrates. An activated bauxite alkali collector is disclosed, and includes an alumina liner. The sampling system can be operated remotely or locally, and can be permanently installed or configured as a portable system.

  10. Particle impactor assembly for size selective high volume air sampler

    DOE Patents [OSTI]

    Langer, Gerhard (Boulder, CO)

    1988-08-16

    Air containing entrained particulate matter is directed through a plurality of parallel, narrow, vertically oriented impactor slots of an inlet element toward an adjacently located, relatively large, dust impaction surface preferably covered with an adhesive material. The air flow turns over the impaction surface, leaving behind the relatively larger particles according to the human thoracic separation system and passes through two elongate exhaust apertures defining the outer bounds of the impaction collection surface to pass through divergent passages which slow down and distribute the air flow, with entrained smaller particles, over a fine filter element that separates the fine particles from the air. The elongate exhaust apertures defining the impaction collection surface are spaced apart by a distance greater than the lengths of elongate impactor slots in the inlet element and are oriented to be normal thereto. By appropriate selection of dimensions and the number of impactor slots air flow through the inlet element is provided a nonuniform velocity distribution with the lower velocities being obtained near the center of the impactor slots, in order to separate out particles larger than a certain predetermined size on the impaction collection surface. The impaction collection surface, even in a moderately sized apparatus, is thus relatively large and permits the prolonged sampling of air for periods extending to four weeks.

  11. Developing Supersonic Impactor and Aerodynamic Lens for Separation and Handling of Nano-Sized Particles

    SciTech Connect (OSTI)

    Goodarz Ahmadi

    2008-06-30

    A computational model for supersonic flows of compressible gases in an aerodynamic lens with several lenses and in a supersonic/hypersonic impactor was developed. Airflow conditions in the aerodynamic lens were analyzed and contour plots for variation of Mach number, velocity magnitude and pressure field in the lens were evaluated. The nano and micro-particle trajectories in the lens and their focusing and transmission efficiencies were evaluated. The computational model was then applied to design of a aerodynamic lens that could generate focus particle beams while operating under atmospheric conditions. The computational model was also applied to airflow condition in the supersonic/hypersonic impactor. Variations of airflow condition and particle trajectories in the impactor were evaluated. The simulation results could provide understanding of the performance of the supersonic and hypersonic impactors that would be helpful for the design of such systems.

  12. Sol-Generating Chemical Vapor into Liquid (SG-CViL) deposition – A facile method for encapsulation of diverse cell types in silica matrices

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Johnston, Robert; Rogelj, Snezna; Harper, Jason C.; Tartis, Michaelann

    2014-12-12

    In nature, cells perform a variety of complex functions such as sensing, catalysis, and energy conversion which hold great potential for biotechnological device construction. However, cellular sensitivity to ex vivo environments necessitates development of bio–nano interfaces which allow integration of cells into devices and maintain their desired functionality. In order to develop such an interface, the use of a novel Sol-Generating Chemical Vapor into Liquid (SG-CViL) deposition process for whole cell encapsulation in silica was explored. In SG-CViL, the high vapor pressure of tetramethyl orthosilicate (TMOS) is utilized to deliver silica into an aqueous medium, creating a silica sol. Cellsmore » are then mixed with the resulting silica sol, facilitating encapsulation of cells in silica while minimizing cell contact with the cytotoxic products of silica generating reactions (i.e. methanol), and reduce exposure of cells to compressive stresses induced from silica condensation reactions. Using SG-CVIL, Saccharomyces cerevisiae (S. cerevisiae) engineered with an inducible beta galactosidase system were encapsulated in silica solids and remained both viable and responsive 29 days post encapsulation. By tuning SG-CViL parameters, thin layer silica deposition on mammalian HeLa and U87 human cancer cells was also achieved. Furthermore, the ability to encapsulate various cell types in either a multi cell (S. cerevisiae) or a thin layer (HeLa and U87 cells) fashion shows the promise of SG-CViL as an encapsulation strategy for generating cell–silica constructs with diverse functions for incorporation into devices for sensing, bioelectronics, biocatalysis, and biofuel applications.« less

  13. Sol-Generating Chemical Vapor into Liquid (SG-CViL) deposition – A facile method for encapsulation of diverse cell types in silica matrices

    SciTech Connect (OSTI)

    Johnston, Robert; Rogelj, Snezna; Harper, Jason C.; Tartis, Michaelann

    2014-12-12

    In nature, cells perform a variety of complex functions such as sensing, catalysis, and energy conversion which hold great potential for biotechnological device construction. However, cellular sensitivity to ex vivo environments necessitates development of bio–nano interfaces which allow integration of cells into devices and maintain their desired functionality. In order to develop such an interface, the use of a novel Sol-Generating Chemical Vapor into Liquid (SG-CViL) deposition process for whole cell encapsulation in silica was explored. In SG-CViL, the high vapor pressure of tetramethyl orthosilicate (TMOS) is utilized to deliver silica into an aqueous medium, creating a silica sol. Cells are then mixed with the resulting silica sol, facilitating encapsulation of cells in silica while minimizing cell contact with the cytotoxic products of silica generating reactions (i.e. methanol), and reduce exposure of cells to compressive stresses induced from silica condensation reactions. Using SG-CVIL, Saccharomyces cerevisiae (S. cerevisiae) engineered with an inducible beta galactosidase system were encapsulated in silica solids and remained both viable and responsive 29 days post encapsulation. By tuning SG-CViL parameters, thin layer silica deposition on mammalian HeLa and U87 human cancer cells was also achieved. Furthermore, the ability to encapsulate various cell types in either a multi cell (S. cerevisiae) or a thin layer (HeLa and U87 cells) fashion shows the promise of SG-CViL as an encapsulation strategy for generating cell–silica constructs with diverse functions for incorporation into devices for sensing, bioelectronics, biocatalysis, and biofuel applications.

  14. Exploring pulse shaping for Z using graded-density impactors on gas guns (final report for LDRD project 79879).

    SciTech Connect (OSTI)

    Furnish, Michael David; Reinhart, William Dodd; Anderson, William W. (Los Alamos National Laboratory, Los Alamos, NM); Vogler, Tracy John; Hixson, Rob (Los Alamos National Laboratory, Los Alamos, NM); Kipp, Marlin E.

    2005-10-01

    While isentropic compression experiment (ICE) techniques have proved useful in deducing the high-pressure compressibility of a wide range of materials, they have encountered difficulties where large-volume phase transitions exist. The present study sought to apply graded-density impactor methods for producing isentropic loading to planar impact experiments to selected such problems. Cerium was chosen due to its 20% compression between 0.7 and 1.0 GPa. A model was constructed based on limited earlier dynamic data, and applied to the design of a suite of experiments. A capability for handling this material was installed. Two experiments were executed using shock/reload techniques with available samples, loading initially to near the gamma-alpha transition, then reloading. As well, two graded-density impactor experiments were conducted with alumina. A method for interpreting ICE data was developed and validated; this uses a wavelet construction for the ramp wave and includes corrections for the ''diffraction'' of wavelets by releases or reloads reflected from the sample/window interface. Alternate methods for constructing graded-density impactors are discussed.

  15. Virtual button interface

    DOE Patents [OSTI]

    Jones, Jake S. (Albuquerque, NM)

    1999-01-01

    An apparatus and method of issuing commands to a computer by a user interfacing with a virtual reality environment. To issue a command, the user directs gaze at a virtual button within the virtual reality environment, causing a perceptible change in the virtual button, which then sends a command corresponding to the virtual button to the computer, optionally after a confirming action is performed by the user, such as depressing a thumb switch.

  16. Virtual button interface

    DOE Patents [OSTI]

    Jones, J.S.

    1999-01-12

    An apparatus and method of issuing commands to a computer by a user interfacing with a virtual reality environment are disclosed. To issue a command, the user directs gaze at a virtual button within the virtual reality environment, causing a perceptible change in the virtual button, which then sends a command corresponding to the virtual button to the computer, optionally after a confirming action is performed by the user, such as depressing a thumb switch. 4 figs.

  17. PNNL: About - Virtual Tour

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

    Tour PNNL Virtually Virtual Tour Virtual Tours at PNNL Take a 360-degree inside peak at where science happens Our campus has specialized facilities with delicate instruments that allow us to analyze the miniscule and compute the enormous. Start the tour to visit: Environmental Molecular Sciences Laboratory is DOE's premier molecular sciences laboratory with state-of-the-art powerful microscopes, spectrometers, and a supercomputer. As a user facility, these instruments are available to

  18. ARM - Measurement - Virtual temperature

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

    govMeasurementsVirtual temperature ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Virtual temperature The virtual temperature Tv = T(1 + rv/{epsilon}), where rv is the mixing ratio, and {epsilon} is the ratio of the gas constants of air and water vapor ( 0.622). Categories Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to

  19. Jefferson Lab Virtual Tour

    SciTech Connect (OSTI)

    None

    2013-07-13

    Take a virtual tour of the campus of Thomas Jefferson National Accelerator Facility. You can see inside our two accelerators, three experimental areas, accelerator component fabrication and testing areas, high-performance computing areas and laser labs.

  20. Jefferson Lab Virtual Tour

    ScienceCinema (OSTI)

    None

    2014-05-22

    Take a virtual tour of the campus of Thomas Jefferson National Accelerator Facility. You can see inside our two accelerators, three experimental areas, accelerator component fabrication and testing areas, high-performance computing areas and laser labs.

  1. Virtual Advanced Power Training Environments | The Ames Laboratory

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

    Virtual Advanced Power Training Environments

  2. Virtual nuclear weapons

    SciTech Connect (OSTI)

    Pilat, J.F.

    1997-08-01

    The term virtual nuclear weapons proliferation and arsenals, as opposed to actual weapons and arsenals, has entered in recent years the American lexicon of nuclear strategy, arms control, and nonproliferation. While the term seems to have an intuitive appeal, largely due to its cyberspace imagery, its current use is still vague and loose. The author believes, however, that if the term is clearly delineated, it might offer a promising approach to conceptualizing certain current problems of proliferation. The first use is in a reference to an old problem that has resurfaced recently: the problem of growing availability of weapon-usable nuclear materials in civilian nuclear programs along with materials made `excess` to defense needs by current arms reduction and dismantlement. It is argued that the availability of these vast materials, either by declared nuclear-weapon states or by technologically advanced nonweapon states, makes it possible for those states to rapidly assemble and deploy nuclear weapons. The second use has quite a different set of connotations. It is derived conceptually from the imagery of computer-generated reality. In this use, one thinks of virtual proliferation and arsenals not in terms of the physical hardware required to make the bomb but rather in terms of the knowledge/experience required to design, assemble, and deploy the arsenal. Virtual weapons are a physics reality and cannot be ignored in a world where knowledge, experience, materials, and other requirements to make nuclear weapons are widespread, and where dramatic army reductions and, in some cases, disarmament are realities. These concepts are useful in defining a continuum of virtual capabilities, ranging from those at the low end that derive from general technology diffusion and the existence of nuclear energy programs to those at the high end that involve conscious decisions to develop or maintain militarily significant nuclear-weapon capabilities.

  3. Virtual environment tactile system

    DOE Patents [OSTI]

    Renzi, R.

    1996-12-10

    A method for providing a realistic sense of touch in virtual reality by means of programmable actuator assemblies is disclosed. Each tactile actuator assembly consists of a number of individual actuators whose movement is controlled by a computer and associated drive electronics. When an actuator is energized, the rare earth magnet and the associated contactor, incorporated within the actuator, are set in motion by the opposing electromagnetic field of a surrounding coil. The magnet pushes the contactor forward to contact the skin resulting in the sensation of touch. When the electromagnetic field is turned off, the rare earth magnet and the contactor return to their neutral positions due to the magnetic equilibrium caused by the interaction with the ferrous outer sleeve. The small size and flexible nature of the actuator assemblies permit incorporation into a glove, boot or body suit. The actuator has additional applications, such as, for example, as an accelerometer, an actuator for precisely controlled actuations or to simulate the sensation of braille letters. 28 figs.

  4. Virtual environment tactile system

    DOE Patents [OSTI]

    Renzi, Ronald

    1996-01-01

    A method for providing a realistic sense of touch in virtual reality by means of programmable actuator assemblies is disclosed. Each tactile actuator assembly consists of a number of individual actuators whose movement is controlled by a computer and associated drive electronics. When an actuator is energized, the rare earth magnet and the associated contactor, incorporated within the actuator, are set in motion by the opposing electromagnetic field of a surrounding coil. The magnet pushes the contactor forward to contact the skin resulting in the sensation of touch. When the electromagnetic field is turned off, the rare earth magnet and the contactor return to their neutral positions due to the magnetic equilibrium caused by the interaction with the ferrous outer sleeve. The small size and flexible nature of the actuator assemblies permit incorporation into a glove, boot or body suit. The actuator has additional applications, such as, for example, as an accelerometer, an actuator for precisely controlled actuations or to simulate the sensation of braille letters.

  5. Virtual gap dielectric wall accelerator

    DOE Patents [OSTI]

    Caporaso, George James; Chen, Yu-Jiuan; Nelson, Scott; Sullivan, Jim; Hawkins, Steven A

    2013-11-05

    A virtual, moving accelerating gap is formed along an insulating tube in a dielectric wall accelerator (DWA) by locally controlling the conductivity of the tube. Localized voltage concentration is thus achieved by sequential activation of a variable resistive tube or stalk down the axis of an inductive voltage adder, producing a "virtual" traveling wave along the tube. The tube conductivity can be controlled at a desired location, which can be moved at a desired rate, by light illumination, or by photoconductive switches, or by other means. As a result, an impressed voltage along the tube appears predominantly over a local region, the virtual gap. By making the length of the tube large in comparison to the virtual gap length, the effective gain of the accelerator can be made very large.

  6. 2016 IC Virtual Career Fair

    Broader source: Energy.gov [DOE]

    Meet the Intelligence Community Online at the IC Virtual Career Fair on Thursday, March 3, 2016 from 2pm to 8pm. To register, please go to www.ICVirtualFair.com.

  7. Virtual Control Systems Environment (VCSE)

    SciTech Connect (OSTI)

    Atkins, Will

    2012-10-08

    Will Atkins, a Sandia National Laboratories computer engineer discusses cybersecurity research work for process control systems. Will explains his work on the Virtual Control Systems Environment project to develop a modeling and simulation framework of the U.S. electric grid in order to study and mitigate possible cyberattacks on infrastructure.

  8. Virtual Control Systems Environment (VCSE)

    ScienceCinema (OSTI)

    Atkins, Will

    2014-02-26

    Will Atkins, a Sandia National Laboratories computer engineer discusses cybersecurity research work for process control systems. Will explains his work on the Virtual Control Systems Environment project to develop a modeling and simulation framework of the U.S. electric grid in order to study and mitigate possible cyberattacks on infrastructure.

  9. Instructions for Using Virtual Private Network (VPN)

    Broader source: Energy.gov [DOE]

    Virtual Private Network (VPN) provides access to network drives and is recommended for use only from a EITS provided laptop.

  10. Computer Assisted Virtual Environment - CAVE

    ScienceCinema (OSTI)

    Erickson, Phillip; Podgorney, Robert; Weingartner, Shawn; Whiting, Eric

    2014-06-09

    Research at the Center for Advanced Energy Studies is taking on another dimension with a 3-D device known as a Computer Assisted Virtual Environment. The CAVE uses projection to display high-end computer graphics on three walls and the floor. By wearing 3-D glasses to create depth perception and holding a wand to move and rotate images, users can delve into data.

  11. Booster Neutrino Experiment - Virtual Tour

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

    Virtual Tour This series of pages about MiniBooNE will help you understand more about the what, why, and how of our experiment. When you begin the tour, a new window will open and you can use the next and back buttons to navigate. You may exit at any time by clicking on the "X" button in the upper right hand corner of the window. Start the tour here... This tour was created by Jessica Falco in 2000 and updated by Kelly O'Hear in 2002. Jessica and Kelly were high school students who

  12. Virtualized Network Control. Final Report

    SciTech Connect (OSTI)

    Ghani, Nasir

    2013-02-01

    This document is the final report for the Virtualized Network Control (VNC) project, which was funded by the United States Department of Energy (DOE) Office of Science. This project was also informally referred to as Advanced Resource Computation for Hybrid Service and TOpology NEtworks (ARCHSTONE). This report provides a summary of the project's activities, tasks, deliverable, and accomplishments. It also provides a summary of the documents, software, and presentations generated as part of this projects activities. Namely, the Appendix contains an archive of the deliverables, documents, and presentations generated a part of this project.

  13. Virtual Reality for Nuclear Material Handling

    Broader source: Energy.gov [DOE]

    AIKEN, S.C. – EM’s Savannah River National Laboratory (SRNL) is applying a high-tech solution to complex and dangerous workforce training: virtual reality.

  14. Ultrafast Laser Facility - Virtual Tour | Photosynthetic Antenna...

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

    a virtual tour of the Ultrafast Laser Facility for St. Louis University High School students. Special thanks to teacher Nhan Pham for joining us An error occurred. Try...

  15. 2015 IC Virtual Career Fair | Department of Energy

    Office of Environmental Management (EM)

    2015 IC Virtual Career Fair 2015 IC Virtual Career Fair Instructions for Applicants Please use the following process to submit an application and resume for DOE's 2015 IC Virtual...

  16. Building Controls Virtual Test Bed

    Energy Science and Technology Software Center (OSTI)

    2008-04-01

    The Building Controls Virtual Test Bed (BCVTB) is a modular software environment that is based on the Ptolemy II software environment. The BCVTB can be used for design and analysis of heterogenous systems, such as building energy and controls systems. Our additions to Ptolemy II allow users to Couple to Ptolemy II simulation software such as EnergyPlus, MATLAB/Simulink or Dymola for data exchange during run-time. Future versions of the BCVTS will also contain an interfacemore » to BACnet which is a communication protocol for building Control systems, and interfaces to digital/analog converters that allow communication with controls hardware. Through Ptolemy II, the BCVTB provides a graphical model building environment, synchronizes the exchanged data and visualizes the system evolution during run- time.« less

  17. BioenergizeME Virtual Science Fair: Science & Technology Sustainable...

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

    Science & Technology Sustainable Transportation Fuels BioenergizeME Virtual Science Fair: Science & Technology Sustainable Transportation Fuels BioenergizeME Virtual Science Fair: ...

  18. SMART Wind Consortium Composites Subgroup Virtual Meeting: Advanced...

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

    SMART Wind Consortium Composites Subgroup Virtual Meeting: Advanced Manufacturing of Wind Turbine Blades SMART Wind Consortium Composites Subgroup Virtual Meeting: Advanced...

  19. Integrated Virtual Lab in Supporting Heavy Duty Engine and Vehicle...

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

    Virtual Lab in Supporting Heavy Duty Engine and Vehicle Emission Rulemaking Integrated Virtual Lab in Supporting Heavy Duty Engine and Vehicle Emission Rulemaking Presentation ...

  20. T-678: Red Hat Enterprise Virtualization Hypervisor VLAN Packet...

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

    8: Red Hat Enterprise Virtualization Hypervisor VLAN Packet Processing Flaw Lets Remote Users Deny Service T-678: Red Hat Enterprise Virtualization Hypervisor VLAN Packet...

  1. CBEI: Virtual Refrigerant Charge Sensing and Load Metering -...

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

    Virtual Refrigerant Charge Sensing and Load Metering - 2015 Peer Review Presenter: James Braun, Purdue University View the Presentation PDF icon CBEI: Virtual Refrigerant...

  2. Virtual impact: visualizing the potential effects of cosmic impact in human history

    SciTech Connect (OSTI)

    Masse, W Bruce; Janecky, David R; Forte, Maurizio; Barrientos, Gustavo

    2009-01-01

    Current models indicate that catastrophic impacts by asteroids and comets capable of killing more than one quarter of Earth's human population have occurred on average once every million years; smaller impacts, such the 1908 Tunguska impact that leveled more than 2,000 square km of Siberian forest, occur every 200-300 years. Therefore, cosmic impact likely significantly affected hominine evolution and conceivably played a role in Holocene period human culture history. Regrettably, few archaeologists are trained to appreciate the nature and potential effects of cosmic impact. We have developed a conceptual model for an extensible set of educational and research tools based on virtual reality collaborative environments to engage archaeologists and the general public on the topic of the role of cosmic impact in human history. Our initial focus is on two documented asteroid impacts in Argentina during the period of 4000 to 1000 B.C. Campo del Cicio resulted in an energy release of around 2-3 megatons (100-150 times the Hiroshima atomic weapon), and left several craters and a strewn field covering 493 km{sup 2} in northeastern Argentina. Rio Cuarto was likely more than 1000 megatons and may have devastated an area greater than 50,000 km{sup 2} in central Argentina. We are focusing on reconstructions of these events and their potential effects on contemporary hunter and gatherers. Our vinual reality tools also introduce interactive variables (e.g., impactor physical properties, climate, vegetation, topography, and social complexity) to allow researchers and students to better investigate and evaluate the factors that significantly influence cosmic impact effects.

  3. Two implementations of shared virtual space environments.

    SciTech Connect (OSTI)

    Disz, T. L.

    1998-01-13

    While many issues in the area of virtual reality (VR) research have been addressed in recent years, the constant leaps forward in technology continue to push the field forward. VR research no longer is focused only on computer graphics, but instead has become even more interdisciplinary, combining the fields of networking, distributed computing, and even artificial intelligence. In this article we discuss some of the issues associated with distributed, collaborative virtual reality, as well as lessons learned during the development of two distributed virtual reality applications.

  4. Virtual tour: INL's space battery facility

    ScienceCinema (OSTI)

    Johnson, Steve

    2013-05-28

    This virtual tour shows how INL fuels and tests nuclear power systems for deep space missions. To learn more about INL's contribution to the Mars Science Laboratory, visit http://www.inl.gov/marsrover.

  5. National Energy Literacy Virtual Town Hall

    Broader source: Energy.gov [DOE]

    The webinar will be a dynamic, virtual conversation for educators about ongoing efforts from across the country in utilizing the Department of Energy's Energy Literacy Framework to address one of our nation's’ biggest national challenges, energy illiteracy.

  6. BioenergizeME Virtual Science Fair: Bioenergy

    Broader source: Energy.gov [DOE]

    This infographic was created by students from Sun Valley High School in Aston, PA, as part of the U.S. Department of Energy-BioenergizeME Virtual Science Fair.

  7. Robotics virtual rail system and method

    DOE Patents [OSTI]

    Bruemmer, David J. (Idaho Falls, ID); Few, Douglas A. (Idaho Falls, ID); Walton, Miles C. (Idaho Falls, ID)

    2011-07-05

    A virtual track or rail system and method is described for execution by a robot. A user, through a user interface, generates a desired path comprised of at least one segment representative of the virtual track for the robot. Start and end points are assigned to the desired path and velocities are also associated with each of the at least one segment of the desired path. A waypoint file is generated including positions along the virtual track representing the desired path with the positions beginning from the start point to the end point including the velocities of each of the at least one segment. The waypoint file is sent to the robot for traversing along the virtual track.

  8. Residential heating oil prices virtually unchanged

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

    4 Residential heating oil prices virtually unchanged The average retail price for home heating oil rose 2-tenths of a cent from a week ago to 4.24 per gallon. That's up 8.2 cents...

  9. Residential heating oil prices virtually unchanged

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

    heating oil prices virtually unchanged The average retail price for home heating oil fell 4-tenths of a penny from a week ago to 3.95 per gallon. That's down 8-tenths of a penny...

  10. Ion mobility spectrometer with virtual aperture grid

    DOE Patents [OSTI]

    Pfeifer, Kent B. (Los Lunas, NM); Rumpf, Arthur N. (Albuquerque, NM)

    2010-11-23

    An ion mobility spectrometer does not require a physical aperture grid to prevent premature ion detector response. The last electrodes adjacent to the ion collector (typically the last four or five) have an electrode pitch that is less than the width of the ion swarm and each of the adjacent electrodes is connected to a source of free charge, thereby providing a virtual aperture grid at the end of the drift region that shields the ion collector from the mirror current of the approaching ion swarm. The virtual aperture grid is less complex in assembly and function and is less sensitive to vibrations than the physical aperture grid.

  11. Ames Lab 101: C6: Virtual Engineering

    ScienceCinema (OSTI)

    None

    2012-08-29

    Ames Laboratory scientist Doug McCorkle explains the importance of virtual engineering and talks about the C6. The C6 is a three-dimensional, fully-immersive synthetic environment residing in the center atrium of Iowa State University's Howe Hall.

  12. DOE Sustainability Awards Best Practices Virtual Workshop

    Broader source: Energy.gov [DOE]

    The Sustainability Performance Office (SPO) will host a virtual best practices workshop on April 23, 2014 (2:00-3:30 PM EDT) to recognize the winners of the 2013 DOE Sustainability Awards. Award winners will present on their accomplishments and answer brief questions on their programs and projects. Please join us in celebrating the 2013 DOE Sustainability Awards winners.

  13. Webcast: National Energy Literacy Virtual Town Hall | Department of Energy

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

    Webcast: National Energy Literacy Virtual Town Hall Webcast: National Energy Literacy Virtual Town Hall Webcast: National Energy Literacy Virtual Town Hall On August 5, 2014, the Department of Energy (DOE) hosted a dynamic virtual conversation of ongoing efforts from across the country in utilizing the Energy Literacy Framework to address one of our nations' biggest national challenges, "Energy Illiteracy." The goal of this webinar was to share resources in energy education and provide

  14. How ORISE is Making a Difference: Virtual Community Reception Center

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

    Virtual Community Reception Center 3-D virtual training equips health departments for mass casualty radiation emergencies Virtual Community Reception Center The Virtual Community Reception Center. Click Image to launch video. Following a mass casualty radiation emergency, public health professionals will play a crucial role in assessing radiation exposures, screening for radioactive contamination, and prioritizing people for further care. This process-population monitoring-will be conducted in

  15. Virtual Oxygen Sensor for Innovative NOx and PM Emission Control

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

    Technologies | Department of Energy Virtual Oxygen Sensor for Innovative NOx and PM Emission Control Technologies Virtual Oxygen Sensor for Innovative NOx and PM Emission Control Technologies A virtual O2 sensor for the intake manifold of a diesel engine equipped with EGR, along with a virtual intake manifold O2 sensor, show good accuracy with stationary measurements PDF icon deer09_traver.pdf More Documents & Publications Simulation and Analysis of HP/LP EGR for Heavy-Duty Applications

  16. Comparison of Virtualization and Containerization Techniques for

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

    High-Performance Computing | Argonne Leadership Computing Facility Comparison of Virtualization and Containerization Techniques for High-Performance Computing Event Sponsor: Mathematics and Computer Science Division Seminar Start Date: Feb 9 2016 - 12:00pm Building/Room: Building 240/Room 4301 Location: Argonne National Laboratory Speaker(s): Balaji Subramaniam Host: Kate Keahey High Performance Computing (HPC) users have traditionally used dedicated clusters hosted in national laboratories

  17. CBEI: Virtual Refrigerant Charge Sensing and Load Metering - 2015 Peer

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

    Review | Department of Energy Virtual Refrigerant Charge Sensing and Load Metering - 2015 Peer Review CBEI: Virtual Refrigerant Charge Sensing and Load Metering - 2015 Peer Review Presenter: James Braun, Purdue University View the Presentation PDF icon CBEI: Virtual Refrigerant Charge Sensing and Load Metering - 2015 Peer Review More Documents & Publications CBEI: FDD for Advanced RTUs - 2015 Peer Review Control and Diagnostics for Rooftop Units - 2014 BTO Peer Review CBEI: Coordinating

  18. The Heavy Ion Fusion Science Virtual National Laboratory

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

    The Heavy Ion Fusion Science Virtual National Laboratory Python in a Parallel Environment Dave Grote - LLNL & LBNL NUG2013 User Day Wednesday, February 15, 2013 Slide 2 The Heavy Ion Fusion Science Virtual National Laboratory Outline * Why we use Python * How we use Python * Parallel Python with pyMPI * Our graphics model with Pygist * Parallel Python drawbacks and resolutions - Start up time - Static building * Conclusions Slide 3 The Heavy Ion Fusion Science Virtual National Laboratory 3

  19. Implementing virtual reality interfaces for the geosciences

    SciTech Connect (OSTI)

    Bethel, W.; Jacobsen, J.; Austin, A.; Lederer, M.; Little, T.

    1996-06-01

    For the past few years, a multidisciplinary team of computer and earth scientists at Lawrence Berkeley National Laboratory has been exploring the use of advanced user interfaces, commonly called {open_quotes}Virtual Reality{close_quotes} (VR), coupled with visualization and scientific computing software. Working closely with industry, these efforts have resulted in an environment in which VR technology is coupled with existing visualization and computational tools. VR technology may be thought of as a user interface. It is useful to think of a spectrum, ranging the gamut from command-line interfaces to completely immersive environments. In the former, one uses the keyboard to enter three or six-dimensional parameters. In the latter, three or six-dimensional information is provided by trackers contained either in hand-held devices or attached to the user in some fashion, e.g. attached to a head-mounted display. Rich, extensible and often complex languages are a vehicle whereby the user controls parameters to manipulate object position and location in a virtual world, but the keyboard is the obstacle in that typing is cumbersome, error-prone and typically slow. In the latter, the user can interact with these parameters by means of motor skills which are highly developed. Two specific geoscience application areas will be highlighted. In the first, we have used VR technology to manipulate three-dimensional input parameters, such as the spatial location of injection or production wells in a reservoir simulator. In the second, we demonstrate how VR technology has been used to manipulate visualization tools, such as a tool for computing streamlines via manipulation of a {open_quotes}rake.{close_quotes} The rake is presented to the user in the form of a {open_quotes}virtual well{close_quotes} icon, and provides parameters used by the streamlines algorithm.

  20. Upcoming Release of the University of Minnesota's Virtual Wind...

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

    Lab Photovoltaic Systems Evaluation Laboratory PV Regional ... Facility Geomechanics and Drilling Labs National ... and prepare UMN's offshore version of the Virtual ...

  1. A Stochastic Reactor Based Virtual Engine Model Employing Detailed...

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

    Detailed Chemistry for Kinetic Studies of In-Cylinder Combustion and Exhaust Aftertreatment A Stochastic Reactor Based Virtual Engine Model Employing Detailed Chemistry for ...

  2. Manipulative Virtual Tools for Tool Mark Characterization | The...

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

    Manipulative Virtual Tools for Tool Mark Characterization DESCRIPTION: The goal of this project is to develop a methodology whereby a three-dimensional (3-D) computer simulation of...

  3. Manipulative Virtual Tools for Tool Mark Characterization | The Ames

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

    Laboratory Manipulative Virtual Tools for Tool Mark Characterization FWP/Project Description: The goal of this project is to develop a methodology whereby a three-dimensional (3-D) computer simulation of a tool tip is generated. Quantitative 3-D data from the suspected tool and evidence toolmark will be acquired and a virtual reality program developed that takes this data and reconstructs a "virtual tool" for computer manipulation to create "virtual tool marks." Duplicate

  4. T-588: HP Virtual SAN Appliance Stack Overflow

    Broader source: Energy.gov [DOE]

    A vulnerability has been reported in HP StorageWorks P4000 Virtual SAN Appliance Software, which can be exploited by malicious people to compromise a vulnerable system.

  5. Towards secure virtual directories : a risk analysis framework.

    SciTech Connect (OSTI)

    Claycomb, William R.

    2010-07-01

    Directory services are used by almost every enterprise computing environment to provide data concerning users, computers, contacts, and other objects. Virtual directories are components that provide directory services in a highly customized manner. Unfortunately, though the use of virtual directory services are widespread, an analysis of risks posed by their unique position and architecture has not been completed. We present a detailed analysis of six attacks to virtual directory services, including steps for detection and prevention. We also describe various categories of attack risks, and discuss what is necessary to launch an attack on virtual directories. Finally, we present a framework to use in analyzing risks to individual enterprise computing virtual directory instances. We show how to apply this framework to an example implementation, and discuss the benefits of doing so.

  6. Methods and systems relating to an augmented virtuality environment

    DOE Patents [OSTI]

    Nielsen, Curtis W; Anderson, Matthew O; McKay, Mark D; Wadsworth, Derek C; Boyce, Jodie R; Hruska, Ryan C; Koudelka, John A; Whetten, Jonathan; Bruemmer, David J

    2014-05-20

    Systems and methods relating to an augmented virtuality system are disclosed. A method of operating an augmented virtuality system may comprise displaying imagery of a real-world environment in an operating picture. The method may further include displaying a plurality of virtual icons in the operating picture representing at least some assets of a plurality of assets positioned in the real-world environment. Additionally, the method may include displaying at least one virtual item in the operating picture representing data sensed by one or more of the assets of the plurality of assets and remotely controlling at least one asset of the plurality of assets by interacting with a virtual icon associated with the at least one asset.

  7. An object-oriented extension for debugging the virtual machine

    SciTech Connect (OSTI)

    Pizzi, R.G. Jr.

    1994-12-01

    A computer is nothing more then a virtual machine programmed by source code to perform a task. The program`s source code expresses abstract constructs which are compiled into some lower level target language. When a virtual machine breaks, it can be very difficult to debug because typical debuggers provide only low-level target implementation information to the software engineer. We believe that the debugging task can be simplified by introducing aspects of the abstract design and data into the source code. We introduce OODIE, an object-oriented extension to programming languages that allows programmers to specify a virtual environment by describing the meaning of the design and data of a virtual machine. This specification is translated into symbolic information such that an augmented debugger can present engineers with a programmable debugging environment specifically tailored for the virtual machine that is to be debugged.

  8. Virtuality Distributions and Pion Transition Form Factor

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Radyushkin, Anatoly V.

    2015-03-01

    Using the example of hard exclusive transition process γ*γ → π0 at the handbag level, we outline basics of a new approach to transverse momentum dependence in hard processes. In coordinate representation, matrix elements of operators (in the simplest case, bilocal O(0,z)) describing a hadron with momentum p, are functions of (pz) and z2 parametrized through virtuality distribution amplitudes (VDA) Φ(x, σ), with x being Fourier-conjugate to (pz) and σ Laplace-conjugate to z2. For intervals with z+=0, we introduce the transverse momentum distribution amplitude (TMDA) Ψ(x, k_perp), and write it in terms of VDA Φ(x,σ). We propose models for softmore » VDAs/TMDAs, and use them for comparison of handbag results with experimental (BaBar and BELLE) data. We also discuss the generation of hard tails of TMDAs from initially soft forms.« less

  9. Extension of a Virtual Refrigerant Charge Sensor

    SciTech Connect (OSTI)

    Kim, Woohyun; Braun, J.

    2015-07-01

    The primary goal of the work described in this paper was to evaluate and extend a virtual refrigerant charge sensor (VRC) for determining refrigerant charge for equipment having variable-speed compressors and fans. To evaluate the accuracy of the VRC, data were first collected from previous laboratory tests for different systems and over a wide range of operating conditions. In addition, new laboratory tests were performed to consider conditions not available within the existing data set. The systems for the new laboratory tests were two residential ductless split heat pump systems that employ a variable-speed compressor and R-410a as the refrigerant. Based on the evaluations, the original virtual charge sensor (termed model I) was found to work well in estimating the refrigerant charge for systems with a variable-speed compressor under many operating conditions. However, for extreme test conditions such as low outdoor temperatures and low compressor speed, the VRC needed to be improved. To overcome the limitations, the model associated with the VRC sensor was modified to include a term involving the inlet quality to the evaporator estimated from the condenser outlet condition (termed model II). Both model I and II showed good performance in terms of predicting charge levels for systems with a constant speed compressor, but model II gave better performance for systems with a variable-speed compressor. However, when the superheat of the compressor was zero, neither model I nor II could accurately predict charge level. Therefore, a third approach (Model III) was developed that includes the discharge superheat of the compressor. This model improved performance for a laboratory-tested system that included a number of points with no superheat entering the compressor.

  10. Designing user models in a virtual cave environment

    SciTech Connect (OSTI)

    Brown-VanHoozer, S.; Hudson, R.; Gokhale, N.

    1995-12-31

    In this paper, the results of a first study into the use of virtual reality for human factor studies and design of simple and complex models of control systems, components, and processes are described. The objective was to design a model in a virtual environment that would reflect more characteristics of the user`s mental model of a system and fewer of the designer`s. The technology of a CAVE{trademark} virtual environment and the methodology of Neuro Linguistic Programming were employed in this study.

  11. CBEI - Virtual Refrigerant Charge Sensing and Load Metering

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

    Virtual Refrigerant Charge Sensing and Load Metering 2015 Building Technologies Office Peer Review Jim Braun, jbraun@purdue.edu CBEI/Purdue University Project Summary Timeline: Start date: 5/1/2014 Planned end date: 4/30/2016 Key Milestones 1. Accuracy of virtual charge sensor, 4/30/15 2. Accuracy of virtual BTU meter, 4/30/15 Budget: Total DOE $ to date: $400,000 Total future DOE $: $140,000 Target Market/Audience: Commercial buildings with either rooftop units (RTUs) or built-up air-handling

  12. SunShot Incubator Virtual Company Showcase Webinar - Text Version |

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

    Department of Energy SunShot Incubator Virtual Company Showcase Webinar - Text Version SunShot Incubator Virtual Company Showcase Webinar - Text Version Below is the text version of the SunShot Incubator Virtual Company Showcase webinar, presented in March 2015. Monica Andrews: Good afternoon and welcome to the SunShot Incubator Awardee Showcase, where you'll hear one-minute quick pitches from 35 solar companies today. My name is Monica Andrews, and with me is Garrett Nilsen. We're

  13. Virtual cathode microwave generator having annular anode slit

    DOE Patents [OSTI]

    Kwan, Thomas J. T.; Snell, Charles M.

    1988-01-01

    A microwave generator is provided for generating microwaves substantially from virtual cathode oscillation. Electrons are emitted from a cathode and accelerated to an anode which is spaced apart from the cathode. The anode has an annular slit therethrough effective to form the virtual cathode. The anode is at least one range thickness relative to electrons reflecting from the virtual cathode. A magnet is provided to produce an optimum magnetic field having the field strength effective to form an annular beam from the emitted electrons in substantial alignment with the annular anode slit. The magnetic field, however, does permit the reflected electrons to axially diverge from the annular beam. The reflected electrons are absorbed by the anode in returning to the real cathode, such that substantially no reflexing electrons occur. The resulting microwaves are produced with a single dominant mode and are substantially monochromatic relative to conventional virtual cathode microwave generators.

  14. Virtual Oxygen Sensor for Innovative NOx and PM Emission Control...

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

    along with a virtual intake manifold O2 sensor, show good accuracy with stationary measurements PDF icon deer09traver.pdf More Documents & Publications Simulation and Analysis of...

  15. BioenergizeME Virtual Science Fair: Microbiology and Bioenergy

    Broader source: Energy.gov [DOE]

    This infographic was created by students from Toledo High School in Toledo, OR, as part of the U.S. Department of Energy-BioenergizeME Virtual Science Fair.

  16. BioenergizeME Virtual Science Fair: Environmental benefit of Bioenergy

    Broader source: Energy.gov [DOE]

    This infographic was created by students from Sun Valley High School in Aston, PA, as part of the U.S. Department of Energy-BioenergizeME Virtual Science Fair.

  17. DOE ZERH Virtual Office Hours (1 of 4)

    Broader source: Energy.gov [DOE]

    TitleZERH Virtual Office Hours: Get the Answers You Need Quickly & EfficientlyDescriptionWhether you’re new to DOE Zero Energy Ready Home or have been involved for a few years, our partners...

  18. BioenergizeME Virtual Science Fair: Environmental Impacts of Bioenergy

    Broader source: Energy.gov [DOE]

    This infographic was created by students from Sun Valley High School in Aston, PA, as part of the U.S. Department of Energy-BioenergizeME Virtual Science Fair.

  19. BioenergizeME Virtual Science Fair: Bioenergy Careers

    Broader source: Energy.gov [DOE]

    This infographic was created by students from Sun Valley High School in Aston, PA, as part of the U.S. Department of Energy-BioenergizeME Virtual Science Fair.

  20. Power in Collaboration: National Energy Literacy Virtual Meet-Up

    Broader source: Energy.gov [DOE]

    The webinar will be a dynamic virtual conversation of ongoing efforts from across the country in utilizing the Department of Energy's Energy Literacy Framework to address one of our nation's...

  1. BioenergizeME Virtual Science Fair: History of Bioenergy

    Broader source: Energy.gov [DOE]

    This infographic was created by students from Sun Valley High School in Aston, PA, as part of the U.S. Department of Energy-BioenergizeME Virtual Science Fair.

  2. DOE ZERH Virtual Office Hours (3 of 4)

    Broader source: Energy.gov [DOE]

    TitleZERH Virtual Office Hours: Get the Answers You Need Quickly & EfficientlyDescriptionWhether you’re new to DOE Zero Energy Ready Home or have been involved for a few years, our partners...

  3. BioenergizeME Virtual Science Fair: Bioenegy Benefits Environmental Forestry

    Broader source: Energy.gov [DOE]

    This infographic was created by students from Sun Valley High School in Aston, PA, as part of the U.S. Department of Energy-BioenergizeME Virtual Science Fair.

  4. BioenergizeME Virtual Science Fair: Environmental Impacts

    Broader source: Energy.gov [DOE]

    This infographic was created by students from Sun Valley High School in Aston, PA, as part of the U.S. Department of Energy-BioenergizeME Virtual Science Fair.

  5. DOE ZERH Virtual Office Hours (4 of 4)

    Broader source: Energy.gov [DOE]

    TitleZERH Virtual Office Hours: Get the Answers You Need Quickly & EfficientlyDescriptionWhether you’re new to DOE Zero Energy Ready Home or have been involved for a few years, our partners...

  6. DOE ZERH Virtual Office Hours (2 of 4)

    Broader source: Energy.gov [DOE]

    TitleZERH Virtual Office Hours: Get the Answers You Need Quickly & EfficientlyDescriptionWhether you’re new to DOE Zero Energy Ready Home or have been involved for a few years, our partners...

  7. BioenergizeME Virtual Science Fair: History of Biomass

    Broader source: Energy.gov [DOE]

    This infographic was created by students from Daniel Boone Area High School in Birdsboro, PA, as part of the U.S. Department of Energy-BioenergizeME Virtual Science Fair.

  8. BioenergizeME Virtual Science Fair: Biomass History A timeline

    Broader source: Energy.gov [DOE]

    This infographic was created by students from Sun Valley High School in Aston, PA, as part of the U.S. Department of Energy-BioenergizeME Virtual Science Fair.

  9. T-678: Red Hat Enterprise Virtualization Hypervisor VLAN Packet Processing Flaw Lets Remote Users Deny Service

    Broader source: Energy.gov [DOE]

    Red Hat Enterprise Virtualization Hypervisor VLAN Packet Processing Flaw Lets Remote Users Deny Service.

  10. A Stochastic Reactor Based Virtual Engine Model Employing Detailed

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

    Chemistry for Kinetic Studies of In-Cylinder Combustion and Exhaust Aftertreatment | Department of Energy A Stochastic Reactor Based Virtual Engine Model Employing Detailed Chemistry for Kinetic Studies of In-Cylinder Combustion and Exhaust Aftertreatment A Stochastic Reactor Based Virtual Engine Model Employing Detailed Chemistry for Kinetic Studies of In-Cylinder Combustion and Exhaust Aftertreatment The model consists of an in-cylinder combustion engine model, an interconnecting exhaust

  11. Unlocking Customer Value: The Virtual Power Plant | Department of Energy

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

    Unlocking Customer Value: The Virtual Power Plant Unlocking Customer Value: The Virtual Power Plant The utility world has changed drastically in the last 10 years. New technologies like Smart Meters and fully functional Smart Grid concepts have made large inroads into the utility space and no one should want to be left behind. Utilities also face additional pressures from regulatory bodies who are continuing to encourage carbon reduction and greater customer flexibility. Utilities need to

  12. Virtual Vehicle - Component-in-the-Loop | Argonne National Laboratory

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

    Virtual Vehicle - Component-in-the-Loop Preparing a plug-in hybrid electric vehicle (PHEV) battery for testing on Argonne's Battery-in-the-Loop system Preparing a plug-in hybrid electric vehicle (PHEV) battery for testing on Argonne's Battery-in-the-Loop system How do you evaluate unique vehicle configurations without building each vehicle from the ground up? Argonne researchers have developed sophisticated tools that enable creation of "virtual" vehicles using a technique called

  13. A Virtual Visit to Bioenergy Research at the National Laboratories |

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

    Department of Energy A Virtual Visit to Bioenergy Research at the National Laboratories A Virtual Visit to Bioenergy Research at the National Laboratories October 22, 2014 - 10:34am Addthis Watch researchers at Pacific Northwest National Laboratory describe their bioenergy research funded by the Energy Department. Alicia Moulton Communications Specialist, Bioenergy Technologies Office For National Bioenergy Day on October 22, bioenergy facilities across the country are holding open houses to

  14. Opposed-flow virtual cyclone for particle concentration

    DOE Patents [OSTI]

    Rader, Daniel J.; Torczynski, John R.

    2000-12-05

    An opposed-flow virtual cyclone for aerosol collation which can accurately collect, classify, and concentrate (enrich) particles in a specific size range. The opposed-flow virtual cyclone is a variation on the virtual cyclone and has its inherent advantages (no-impact particle separation in a simple geometry), while providing a more robust design for concentrating particles in a flow-through type system. The opposed-flow virtual cyclone consists of two geometrically similar virtual cyclones arranged such that their inlet jets are inwardly directed and symmetrically opposed relative to a plane of symmetry located between the two inlet slits. A top plate bounds both jets on the "top" side of the inlets, while the other or lower wall curves "down" and away from each inlet jet. Each inlet jet will follow the adjacent lower wall as it turns away, and that particles will be transferred away from the wall and towards the symmetry plane by centrifugal action. After turning, the two jets merge smoothly along the symmetry line and flow parallel to it through the throat. Particles are transferred from the main flows, across a dividing streamline, and into a central recirculating region, where particle concentrations become greatly increased relative to the main stream.

  15. Virtual QCD corrections to Higgs boson plus four parton processes

    SciTech Connect (OSTI)

    Ellis, R.K.; Giele, W.T.; Zanderighi, G.

    2005-09-01

    We report on the calculation of virtual processes contributing to the production of a Higgs boson and two jets in hadron-hadron collisions. The coupling of the Higgs boson to gluons, via a virtual loop of top quarks, is treated using an effective theory, valid in the large top quark mass limit. The calculation is performed by evaluating one-loop diagrams in the effective theory. The primary method of calculation is a numerical evaluation of the virtual amplitudes as a Laurent series in D-4, where D is the dimensionality of space-time. For the cases H{yields}qqqq and H{yields}qqq{sup '}q{sup '} we confirm the numerical results by an explicit analytic calculation.

  16. Virtual electrodes for high-density electrode arrays

    DOE Patents [OSTI]

    Cela, Carlos J.; Lazzi, Gianluca

    2015-10-13

    The present embodiments are directed to implantable electrode arrays having virtual electrodes. The virtual electrodes may improve the resolution of the implantable electrode array without the burden of corresponding complexity of electronic circuitry and wiring. In a particular embodiment, a virtual electrode may include one or more passive elements to help steer current to a specific location between the active electrodes. For example, a passive element may be a metalized layer on a substrate that is adjacent to, but not directly connected to an active electrode. In certain embodiments, an active electrode may be directly coupled to a power source via a conductive connection. Beneficially, the passive elements may help to increase the overall resolution of the implantable array by providing additional stimulation points without requiring additional wiring or driver circuitry for the passive elements.

  17. Virtual Library on Genetics from Oak Ridge National Laboratory

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

    The World Wide Web (WWW) Virtual Library is a collaborative effort to provide topic indices that break down into many subtopics guiding users to vast resources of information around the world. ORNL hosts the Virtual Library on Genetics as part of the WWWVL's Biosciences topic area. The VL on Genetics is also a collection of links to information resources that supported the DOE Human Genome Project. That project has now evolved into Genomics: GTL. GTL is DOE's next step in genomics--builds on data and resources from the Human Genome Project, the Microbial Genome Program, and systems biology. GTL will accelerate understanding of dynamic living systems for solutions to DOE mission challenges in energy and the environment. The section of the Virtual Library on Genetics that is titled Organisms guides users to genetic information resources and gene sequences for animals, insects, microbes, and plant life.

  18. CASL-U-2015-0067-000 Virtual Environment

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

    7-000 Virtual Environment for Reactor Applications (VERA) Workshop Session 2: Hands on Training Rose Montgomery The Tennessee Valley Authority April 1, 2015 CASL-U-2015-0067-000 1 Virtual Environment for Reactor Applications (VERA) Hands-On Training The American Nuclear Society ANFM Topical Meeting presents April 1, 2015 Hilton Head, SC Please check in to receive your student packet and RSA token to log onto the computers. CASL-U-2015-0067-000 2 2 CASL-U-2015-0067-000 2 CASL-U-2015-0067-000

  19. EGR Distribution in Engine Cylinders Using Advanced Virtual Simulation

    SciTech Connect (OSTI)

    Fan, Xuetong

    2000-08-20

    Exhaust Gas Recirculation (EGR) is a well-known technology for reduction of NOx in diesel engines. With the demand for extremely low engine out NOx emissions, it is important to have a consistently balanced EGR flow to individual engine cylinders. Otherwise, the variation in the cylinders' NOx contribution to the overall engine emissions will produce unacceptable variability. This presentation will demonstrate the effective use of advanced virtual simulation in the development of a balanced EGR distribution in engine cylinders. An initial design is analyzed reflecting the variance in the EGR distribution, quantitatively and visually. Iterative virtual lab tests result in an optimized system.

  20. Los Alamos' New Virtualized Data Center Saves Energy and Cash |

    Office of Environmental Management (EM)

    Department of Energy Alamos' New Virtualized Data Center Saves Energy and Cash Los Alamos' New Virtualized Data Center Saves Energy and Cash March 7, 2011 - 3:15pm Addthis It takes 8,900 kilowatt hours to provide electricity to one U.S. house for a year. With the energy saved annually through Infrastructure on Demand, LANL can power 216 homes. | Photo Courtesy of LANL It takes 8,900 kilowatt hours to provide electricity to one U.S. house for a year. With the energy saved annually through

  1. V-189: Oracle VirtualBox 'tracepath' Bug Lets Local Guest Users...

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

    Oracle VirtualBox 'tracepath' Bug Lets Local Guest Users Deny Service on the Target Host V-189: Oracle VirtualBox 'tracepath' Bug Lets Local Guest Users Deny Service on the Target...

  2. New JLab/Hall A Deeply Virtual Compton Scattering results

    SciTech Connect (OSTI)

    Defurne, Maxime

    2015-08-01

    New data points for unpolarized Deeply Virtual Compton Scattering cross sections have been extracted from the E00-110 experiment at Q2=1.9 GeV2 effectively doubling the statistics available in the valence region. A careful study of systematic uncertainties has been performed.

  3. PNNL offers 'virtual tour' of Shallow Underground Laboratory | National

    National Nuclear Security Administration (NNSA)

    Nuclear Security Administration offers 'virtual tour' of Shallow Underground Laboratory | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Countering Nuclear Terrorism About Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Library Bios Congressional Testimony Fact Sheets Newsletters

  4. Students Share Experiences from First Run of BioenergizeME Virtual Science

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

    Fair | Department of Energy Students Share Experiences from First Run of BioenergizeME Virtual Science Fair Students Share Experiences from First Run of BioenergizeME Virtual Science Fair December 18, 2014 - 12:13pm Addthis Students Share Experiences from First Run of BioenergizeME Virtual Science Fair View all student infographics by clicking on website links through the BioenergizeME Virtual Science Fair map. Last week concluded the beta run of the Bioenergy Technologies Office (BETO)

  5. The Benefits and Risks of Virtual Bidding in Multi-Settlement Markets

    SciTech Connect (OSTI)

    Isemonger, Alan G.

    2006-11-15

    While it is possible that multi-settlement markets can exist without virtual trading, it is equally clear that virtual trading can provide many market benefits. The main one: In the absence of explicit virtual bidding (EVB), the price arbitrage trades that are benign in other commodity markets affect the reliability of the underlying electricity markets, resulting in a situation where EVB is most useful when it neutralizes the deleterious reliability effects of implicit virtual bidding and physical arbitrage. (author)

  6. Periodic local MP2 method employing orbital specific virtuals

    SciTech Connect (OSTI)

    Usvyat, Denis Schütz, Martin; Maschio, Lorenzo

    2015-09-14

    We introduce orbital specific virtuals (OSVs) to represent the truncated pair-specific virtual space in periodic local Møller-Plesset perturbation theory of second order (LMP2). The OSVs are constructed by diagonalization of the LMP2 amplitude matrices which correspond to diagonal Wannier-function (WF) pairs. Only a subset of these OSVs is adopted for the subsequent OSV-LMP2 calculation, namely, those with largest contribution to the diagonal pair correlation energy and with the accumulated value of these contributions reaching a certain accuracy. The virtual space for a general (non diagonal) pair is spanned by the union of the two OSV sets related to the individual WFs of the pair. In the periodic LMP2 method, the diagonal LMP2 amplitude matrices needed for the construction of the OSVs are calculated in the basis of projected atomic orbitals (PAOs), employing very large PAO domains. It turns out that the OSVs are excellent to describe short range correlation, yet less appropriate for long range van der Waals correlation. In order to compensate for this bias towards short range correlation, we augment the virtual space spanned by the OSVs by the most diffuse PAOs of the corresponding minimal PAO domain. The Fock and overlap matrices in OSV basis are constructed in the reciprocal space. The 4-index electron repulsion integrals are calculated by local density fitting and, for distant pairs, via multipole approximation. New procedures for determining the fit-domains and the distant-pair lists, leading to higher efficiency in the 4-index integral evaluation, have been implemented. Generally, and in contrast to our previous PAO based periodic LMP2 method, the OSV-LMP2 method does not require anymore great care in the specification of the individual domains (to get a balanced description when calculating energy differences) and is in that sense a black box procedure. Discontinuities in potential energy surfaces, which may occur for PAO-based calculations if one is not careful, virtually disappear for OSV-LMP2. Moreover, due to much increased compactness of the pair-specific virtual spaces, the OSV-LMP2 calculations are faster and require much less memory than PAO-LMP2 calculations, despite the noticeable overhead of the initial OSV construction procedure.

  7. Higher harmonics generation in relativistic electron beam with virtual cathode

    SciTech Connect (OSTI)

    Kurkin, S. A. Badarin, A. A.; Koronovskii, A. A.; Hramov, A. E.

    2014-09-15

    The study of the microwave generation regimes with intense higher harmonics taking place in a high-power vircator consisting of a relativistic electron beam with a virtual cathode has been made. The characteristics of these regimes, in particular, the typical spectra and their variations with the change of the system parameters (beam current, the induction of external magnetic field) as well as physical processes occurring in the system have been analyzed by means of 3D electromagnetic simulation. It has been shown that the system under study demonstrates the tendency to the sufficient growth of the amplitudes of higher harmonics in the spectrum of current oscillations in the VC region with the increase of beam current. The obtained results allow us to consider virtual cathode oscillators as promising high power mmw-to-THz sources.

  8. Wafer bonded virtual substrate and method for forming the same

    DOE Patents [OSTI]

    Atwater, Jr., Harry A. (So. Pasadena, CA); Zahler, James M. (Pasadena, CA); Morral, Anna Fontcuberta i (Paris, FR)

    2007-07-03

    A method of forming a virtual substrate comprised of an optoelectronic device substrate and handle substrate comprises the steps of initiating bonding of the device substrate to the handle substrate, improving or increasing the mechanical strength of the device and handle substrates, and thinning the device substrate to leave a single-crystal film on the virtual substrate such as by exfoliation of a device film from the device substrate. The handle substrate is typically Si or other inexpensive common substrate material, while the optoelectronic device substrate is formed of more expensive and specialized electro-optic material. Using the methodology of the invention a wide variety of thin film electro-optic materials of high quality can be bonded to inexpensive substrates which serve as the mechanical support for an optoelectronic device layer fabricated in the thin film electro-optic material.

  9. Virtual-state internal nuclear fusion in metal lattices

    SciTech Connect (OSTI)

    Bussard, R.W. )

    1989-09-01

    A model of deuterium-deuterium (D-D) fusion in metal lattices is presented based on two phenomena: reactions between virtual-state pairs of deuterons bound by electrons of high effective mass m and deuterium energy upscattering by fast ions from fusion or tritium reactions with virtual-state nuclear structure groups in palladium nuclei. Since m is a decreasing function of deuterium ion bulk density n/sub 0/ the exponential barrier tunneling factor decreases rapidly with m. As a result, the fusion rate reaches a maximum at a loading density above zero but less than saturation. This can explain observations of transient neutron output from the (/sup 3/He,n) branch, of D-D fusion.

  10. Parallel garbage collection on a virtual memory system

    SciTech Connect (OSTI)

    Abraham, S.G.; Patel, J.H.

    1987-01-01

    Since most artificial intelligence applications are programmed in list processing languages, it is important to design architectures to support efficient garbage collection. This paper presents an architecture and an associated algorithm for parallel garbage collection on a virtual memory system. All the previously proposed parallel algorithms attempt to collect cells released by the list processor during the garbage collection cycle. We do not attempt to collect such cells. As a consequence, the list processor incurs little overhead in the proposed scheme, since it need not synchronize with the collector. Most parallel algorithms are designed for shared memory machines which have certain implicit synchronization functions on variable access. The proposed algorithm is designed for virtual memory systems where both the list processor and the garbage collector have private memories. The enforcement of coherence between the two private memories can be expensive and is not necessary in our scheme. 15 refs., 3 figs.

  11. Virtual Aluminum Castings An Industrial Application of Integrated

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

    Computational Materials Engineering | Energy Frontier Research Centers Virtual Aluminum Castings An Industrial Application of Integrated Computational Materials Engineering Home Author: J. Allison, M. Li, C. Wolverton, X. Su Year: 2006 Abstract: The automotive product design and manufacturing community is continually besieged by Hercule an engineering, timing, and cost challenges. Nowhere is this more evident than in the development of designs and manufacturing processes for cast aluminum

  12. Runtime Performance and Virtual Network Control Alternatives in VM-Based High-Fidelity Network Simulations

    SciTech Connect (OSTI)

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

    2012-01-01

    In prior work (Yoginath and Perumalla, 2011; Yoginath, Perumalla and Henz, 2012), the motivation, challenges and issues were articulated in favor of virtual time ordering of Virtual Machines (VMs) in network simulations hosted on multi-core machines. Two major components in the overall virtualization challenge are (1) virtual timeline establishment and scheduling of VMs, and (2) virtualization of inter-VM communication. Here, we extend prior work by presenting scaling results for the first component, with experiment results on up to 128 VMs scheduled in virtual time order on a single 12-core host. We also explore the solution space of design alternatives for the second component, and present performance results from a multi-threaded, multi-queue implementation of inter-VM network control for synchronized execution with VM scheduling, incorporated in our NetWarp simulation system.

  13. 2015 SunShot Incubator Virtual Showcase Slides | Department of Energy

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

    5 SunShot Incubator Virtual Showcase Slides 2015 SunShot Incubator Virtual Showcase Slides Download the slides from the 2015 SunShot Initiative Incubator Virtual Showcase webinar on March 4, 2015 below. You can also read the transcript. PDF icon Click here to download the webinar slides. More Documents & Publications 2014 SunShot Initiative Portfolio Book: Technology to Market PRESENTATION: OVERVIEW OF THE SUNSHOT INITIATIVE

  14. DOE AVESTAR Center Deploys 3-D Virtual Training System | Department of

    Office of Environmental Management (EM)

    Energy AVESTAR Center Deploys 3-D Virtual Training System DOE AVESTAR Center Deploys 3-D Virtual Training System October 2, 2012 - 1:00pm Addthis Washington, DC - The U.S. Department of Energy's AVESTAR™ Center has taken a major step forward with the successful deployment and site acceptance testing of a new 3-D virtual immersive training system for integrated gasification combined cycle (IGCC) power plants with carbon capture. The training center, launched in 2011, continues to build its

  15. Decentralised optimisation of cogeneration in virtual power plants

    SciTech Connect (OSTI)

    Wille-Haussmann, Bernhard; Erge, Thomas; Wittwer, Christof

    2010-04-15

    Within several projects we investigated grid structures and management strategies for active grids with high penetration of renewable energy resources and distributed generation (RES and DG). Those ''smart grids'' should be designed and managed by model based methods, which are elaborated within these projects. Cogeneration plants (CHP) can reduce the greenhouse gas emissions by locally producing heat and electricity. The integration of thermal storage devices is suitable to get more flexibility for the cogeneration operation. If several power plants are bound to centrally managed clusters, it is called ''virtual power plant''. To operate smart grids optimally, new optimisation and model reduction techniques are necessary to get rid with the complexity. There is a great potential for the optimised management of CHPs, which is not yet used. Due to the fact that electrical and thermal demands do not occur simultaneously, a thermally driven CHP cannot supply electrical peak loads when needed. With the usage of thermal storage systems it is possible to decouple electric and thermal production. We developed an optimisation method based on mixed integer linear programming (MILP) for the management of local heat supply systems with CHPs, heating boilers and thermal storages. The algorithm allows the production of thermal and electric energy with a maximal benefit. In addition to fuel and maintenance costs it is assumed that the produced electricity of the CHP is sold at dynamic prices. This developed optimisation algorithm was used for an existing local heat system with 5 CHP units of the same type. An analysis of the potential showed that about 10% increase in benefit is possible compared to a typical thermally driven CHP system under current German boundary conditions. The quality of the optimisation result depends on an accurate prognosis of the thermal load which is realised with an empiric formula fitted with measured data by a multiple regression method. The key functionality of a virtual power plant is to increase the value of the produced power by clustering different plants. The first step of the optimisation concerns the local operation of the individual power generator, the second step is to calculate the contribution to the virtual power plant. With small extensions the suggested MILP algorithm can be used for an overall EEX (European Energy Exchange) optimised management of clustered CHP systems in form of the virtual power plant. This algorithm has been used to control cogeneration plants within a distribution grid. (author)

  16. User's Guide Virtual Hydropower Prospector Version 1.1

    SciTech Connect (OSTI)

    Douglas G. Hall; Sera E. White; Julie A. Brizzee; Randy D. Lee

    2005-11-01

    The Virtual Hydropower Prospector is a web-based geographic information system (GIS) application for displaying U.S. water energy resource sites on hydrologic region maps. The application assists the user in locating sites of interest and performing preliminary, development feasibility assessments. These assessments are facilitated by displaying contextual features in addition to the water energy resource sites such as hydrograpy, roads, power infrastructure, populated places, and land use and control. This guide provides instructions for operating the application to select what features are displayed and the extent of the map view. It also provides tools for selecting features of particular interest and displaying their attribute information.

  17. BioenergizeME Virtual Science Fair: Coal Can Be Green Too

    Broader source: Energy.gov [DOE]

    This infographic was created by students from Belfry School in Belfry, KY, as part of the U.S. Department of Energy-BioenergizeME Virtual Science Fair.

  18. T-608: HP Virtual Server Environment Lets Remote Authenticated Users Gain Elevated Privileges

    Broader source: Energy.gov [DOE]

    A potential security vulnerability has been identified in HP Virtual Server Environment for Windows. The vulnerability could be exploited remotely to elevate privileges.

  19. Integrated Virtual Lab in Supporting Heavy Duty Engine and Vehicle Emission Rulemaking

    Broader source: Energy.gov [DOE]

    Presentation discusses a virtual lab which can model sophisticated future vehicle systems using three layers of model fidelity supporting each other.

  20. Modal test optimization using VETO (Virtual Environment for Test Optimization)

    SciTech Connect (OSTI)

    Klenke, S.E.; Reese, G.M.; Schoof, L.A.; Shierling, C.

    1996-01-01

    We present a software environment integrating analysis and test-based models to support optimal modal test design through a Virtual Environment for Test Optimization (VETO). A goal in developing this software tool is to provide test and analysis organizations with a capability of mathematically simulating the complete test environment in software. Derived models of test equipment, instrumentation and hardware can be combined within the VETO to provide the user with a unique analysis and visualization capability to evaluate new and existing test methods. The VETO assists analysis and test engineers in maximizing the value of each modal test. It is particularly advantageous for structural dynamics model reconciliation applications. The VETO enables an engineer to interact with a finite element model of a test object to optimally place sensors and exciters and to investigate the selection of data acquisition parameters needed to conduct a complete modal survey. Additionally, the user can evaluate the use of different types of instrumentation such as filters, amplifiers and transducers for which models are available in the VETO. The dynamic response of most of the virtual instruments (including the device under test) is modeled in the state space domain. Design of modal excitation levels and appropriate test instrumentation are facilitated by the VETO`s ability to simulate such features as unmeasured external inputs, A/D quantization effects, and electronic noise. Measures of the quality of the experimental design, including the Modal Assurance Criterion, and the Normal Mode Indicator Function are available.

  1. Virtual laboratories: Collaborative environments and facilities-on-line

    SciTech Connect (OSTI)

    Thomas, C.E. Jr.; Cavallini, J.S.; Seweryniak, G.R.; Kitchens, T.A.; Hitchcock, D.A.; Scott, M.A.; Welch, L.C.; Aiken, R.J. |; Stevens, R.L.

    1995-07-01

    The Department of Energy (DOE) has major research laboratories in a number of locations in the US, typically co-located with large research instruments or research facilities valued at tens of millions to even billions of dollars. Present budget exigencies facing the entire nation are felt very deeply at DOE, just as elsewhere. Advances over the last few years in networking and computing technologies make virtual collaborative environments and conduct of experiments over the internetwork structure a possibility. The authors believe that development of these collaborative environments and facilities-on-line could lead to a ``virtual laboratory`` with tremendous potential for decreasing the costs of research and increasing the productivity of their capital investment in research facilities. The majority of these cost savings would be due to increased productivity of their research efforts, better utilization of resources and facilities, and avoiding duplication of expensive facilities. A vision of how this might all fit together and a discussion of the infrastructure necessary to enable these developments is presented.

  2. Optimization of a Virtual Power Plant to Provide Frequency Support.

    SciTech Connect (OSTI)

    Neely, Jason C.; Johnson, Jay; Gonzalez, Sigifredo; Lave, Matthew Samuel; Delhotal, Jarod James

    2015-12-01

    Increasing the penetration of distributed renewable sources, including photovoltaic (PV) sources, poses technical challenges for grid management. The grid has been optimized over decades to rely upon large centralized power plants with well-established feedback controls, but now non-dispatchable, renewable sources are displacing these controllable generators. This one-year study was funded by the Department of Energy (DOE) SunShot program and is intended to better utilize those variable resources by providing electric utilities with the tools to implement frequency regulation and primary frequency reserves using aggregated renewable resources, known as a virtual power plant. The goal is to eventually enable the integration of 100s of Gigawatts into US power systems.

  3. Longitudinal target-spin asymmetries for deeply virtual Compton scattering

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Seder, E.; Biselli, A.; Pisano, S.; Niccolai, S.; Smith, G. D.; Joo, K.; Adhikari, K.; Amaryan, M. J.; Anderson, M. D.; Anefalos Pereira, S.; et al

    2015-01-22

    A measurement of the electroproduction of photons off protons in the deeply inelastic regime was performed at Jefferson Lab using a nearly 6-GeV electron beam, a longitudinally polarized proton target and the CEBAF Large Acceptance Spectrometer. Target-spin asymmetries for ep → e'p'y events, which arise from the interference of the deeply virtual Compton scattering and the Bethe-Heitler processes, were extracted over the widest kinematics in Q2, xB, t and Φ, for 166 four-dimensional bins. In the framework of Generalized Parton Distributions (GPDs), at leading twist the t dependence of these asymmetries provides insight on the spatial distribution of the axialmore » charge of the proton, which appears to be concentrated in its center. In conclusion, these results bring important and necessary constraints for the existing parametrizations of chiral-even GPDs.« less

  4. An inter-realm, cyber-security infrastructure for virtual supercomputing

    SciTech Connect (OSTI)

    Al-Muhtadi, J.; Feng, W. C.; Fisk, M. E.

    2001-01-01

    Virtual supercomputing, (ise ., high-performance grid computing), is poised to revolutionize the way we think about and use computing. However, the security of the links interconnecting the nodes within such an environment will be its Achilles heel, particularly when secure communication is required to tunnel through heterogeneous domains. In this paper we examine existing security mechanisms, show their inadequacy, and design a comprehensive cybersecurity infrastructure that meets the security requirements of virtual supercomputing. Keywords Security, virtual supercomputing, grid computing, high-performance computing, GSS-API, SSL, IPsec, component-based software, dynamic reconfiguration.

  5. Array of virtual Frisch-grid CZT detectors with common cathode readout and

    Office of Scientific and Technical Information (OSTI)

    pulse-height correction (Conference) | SciTech Connect Conference: Array of virtual Frisch-grid CZT detectors with common cathode readout and pulse-height correction Citation Details In-Document Search Title: Array of virtual Frisch-grid CZT detectors with common cathode readout and pulse-height correction We present our new results from testing 15-mm-long virtual Frisch-grid CdZnTe detectors with a common-cathode readout for correcting pulse-height distortions. The array employs

  6. Breakthrough: MFiX: Building Industry-Scale Machines in a Virtual World |

    Energy Savers [EERE]

    Department of Energy Breakthrough: MFiX: Building Industry-Scale Machines in a Virtual World Breakthrough: MFiX: Building Industry-Scale Machines in a Virtual World July 11, 2012 - 1:34pm Addthis Mfix is open-source, virtual modeling software that makes coal gasification processes more efficient than was ever possible through lab tests. Modeling reduces the cost and time of testing and building actual systems and ultimately results in lower costs, improved power plant efficiency, and new

  7. A COMPUTATIONAL WORKBENCH ENVIRONMENT FOR VIRTUAL POWER PLANT SIMULATION

    SciTech Connect (OSTI)

    Mike Bockelie; Dave Swensen; Martin Denison; Adel Sarofim; Connie Senior

    2004-12-22

    In this report is described the work effort to develop and demonstrate a software framework to support advanced process simulations to evaluate the performance of advanced power systems. Integrated into the framework are a broad range of models, analysis tools, and visualization methods that can be used for the plant evaluation. The framework provides a tightly integrated problem-solving environment, with plug-and-play functionality, and includes a hierarchy of models, ranging from fast running process models to detailed reacting CFD models. The framework places no inherent limitations on the type of physics that can be modeled, numerical techniques, or programming languages used to implement the equipment models, or the type or amount of data that can be exchanged between models. Tools are provided to analyze simulation results at multiple levels of detail, ranging from simple tabular outputs to advanced solution visualization methods. All models and tools communicate in a seamless manner. The framework can be coupled to other software frameworks that provide different modeling capabilities. Three software frameworks were developed during the course of the project. The first framework focused on simulating the performance of the DOE Low Emissions Boiler System Proof of Concept facility, an advanced pulverized-coal combustion-based power plant. The second framework targeted simulating the performance of an Integrated coal Gasification Combined Cycle - Fuel Cell Turbine (IGCC-FCT) plant configuration. The coal gasifier models included both CFD and process models for the commercially dominant systems. Interfacing models to the framework was performed using VES-Open, and tests were performed to demonstrate interfacing CAPE-Open compliant models to the framework. The IGCC-FCT framework was subsequently extended to support Virtual Engineering concepts in which plant configurations can be constructed and interrogated in a three-dimensional, user-centered, interactive, immersive environment. The Virtual Engineering Framework (VEF), in effect a prototype framework, was developed through close collaboration with NETL supported research teams from Iowa State University Virtual Reality Applications Center (ISU-VRAC) and Carnegie Mellon University (CMU). The VEF is open source, compatible across systems ranging from inexpensive desktop PCs to large-scale, immersive facilities and provides support for heterogeneous distributed computing of plant simulations. The ability to compute plant economics through an interface that coupled the CMU IECM tool to the VEF was demonstrated, and the ability to couple the VEF to Aspen Plus, a commercial flowsheet modeling tool, was demonstrated. Models were interfaced to the framework using VES-Open. Tests were performed for interfacing CAPE-Open-compliant models to the framework. Where available, the developed models and plant simulations have been benchmarked against data from the open literature. The VEF has been installed at NETL. The VEF provides simulation capabilities not available in commercial simulation tools. It provides DOE engineers, scientists, and decision makers with a flexible and extensible simulation system that can be used to reduce the time, technical risk, and cost to develop the next generation of advanced, coal-fired power systems that will have low emissions and high efficiency. Furthermore, the VEF provides a common simulation system that NETL can use to help manage Advanced Power Systems Research projects, including both combustion- and gasification-based technologies.

  8. A Virtual Engineering Framework for Simulating Advanced Power System

    SciTech Connect (OSTI)

    Mike Bockelie; Dave Swensen; Martin Denison; Stanislav Borodai

    2008-06-18

    In this report is described the work effort performed to provide NETL with VE-Suite based Virtual Engineering software and enhanced equipment models to support NETL's Advanced Process Engineering Co-simulation (APECS) framework for advanced power generation systems. Enhancements to the software framework facilitated an important link between APECS and the virtual engineering capabilities provided by VE-Suite (e.g., equipment and process visualization, information assimilation). Model enhancements focused on improving predictions for the performance of entrained flow coal gasifiers and important auxiliary equipment (e.g., Air Separation Units) used in coal gasification systems. In addition, a Reduced Order Model generation tool and software to provide a coupling between APECS/AspenPlus and the GE GateCycle simulation system were developed. CAPE-Open model interfaces were employed where needed. The improved simulation capability is demonstrated on selected test problems. As part of the project an Advisory Panel was formed to provide guidance on the issues on which to focus the work effort. The Advisory Panel included experts from industry and academics in gasification, CO2 capture issues, process simulation and representatives from technology developers and the electric utility industry. To optimize the benefit to NETL, REI coordinated its efforts with NETL and NETL funded projects at Iowa State University, Carnegie Mellon University and ANSYS/Fluent, Inc. The improved simulation capabilities incorporated into APECS will enable researchers and engineers to better understand the interactions of different equipment components, identify weaknesses and processes needing improvement and thereby allow more efficient, less expensive plants to be developed and brought on-line faster and in a more cost-effective manner. These enhancements to APECS represent an important step toward having a fully integrated environment for performing plant simulation and engineering. Furthermore, with little effort the modeling capabilities described in this report can be extended to support other DOE programs, such as ultra super critical boiler development, oxy-combustion boiler development or modifications to existing plants to include CO2 capture and sequestration.

  9. CAD-centric Computation Management System for a Virtual TBM

    SciTech Connect (OSTI)

    Ramakanth Munipalli; K.Y. Szema; P.Y. Huang; C.M. Rowell; A.Ying; M. Abdou

    2011-05-03

    HyPerComp Inc. in research collaboration with TEXCEL has set out to build a Virtual Test Blanket Module (VTBM) computational system to address the need in contemporary fusion research for simulating the integrated behavior of the blanket, divertor and plasma facing components in a fusion environment. Physical phenomena to be considered in a VTBM will include fluid flow, heat transfer, mass transfer, neutronics, structural mechanics and electromagnetics. We seek to integrate well established (third-party) simulation software in various disciplines mentioned above. The integrated modeling process will enable user groups to interoperate using a common modeling platform at various stages of the analysis. Since CAD is at the core of the simulation (as opposed to computational meshes which are different for each problem,) VTBM will have a well developed CAD interface, governing CAD model editing, cleanup, parameter extraction, model deformation (based on simulation,) CAD-based data interpolation. In Phase-I, we built the CAD-hub of the proposed VTBM and demonstrated its use in modeling a liquid breeder blanket module with coupled MHD and structural mechanics using HIMAG and ANSYS. A complete graphical user interface of the VTBM was created, which will form the foundation of any future development. Conservative data interpolation via CAD (as opposed to mesh-based transfer), the regeneration of CAD models based upon computed deflections, are among the other highlights of phase-I activity.

  10. Final Report for the Virtual Reliability Realization System LDRD

    SciTech Connect (OSTI)

    DELLIN, THEODORE A.; HENDERSON, CHRISTOPHER L.; O'TOOLE, EDWARD J.

    2000-12-01

    Current approaches to reliability are not adequate to keep pace with the need for faster, better and cheaper products and systems. This is especially true in high consequence of failure applications. The original proposal for the LDRD was to look at this challenge and see if there was a new paradigm that could make reliability predictions, along with a quantitative estimate of the risk in that prediction, in a way that was faster, better and cheaper. Such an approach would be based on the underlying science models that are the backbone of reliability predictions. The new paradigm would be implemented in two software tools: the Virtual Reliability Realization System (VRRS) and the Reliability Expert System (REX). The three-year LDRD was funded at a reduced level for the first year ($120K vs. $250K) and not renewed. Because of the reduced funding, we concentrated on the initial development of the expertise system. We developed an interactive semiconductor calculation tool needed for reliability analyses. We also were able to generate a basic functional system using Microsoft Siteserver Commerce Edition and Microsoft Sequel Server. The base system has the capability to store Office documents from multiple authors, and has the ability to track and charge for usage. The full outline of the knowledge model has been incorporated as well as examples of various types of content.

  11. Deeply virtual Compton Scattering cross section measured with CLAS

    SciTech Connect (OSTI)

    Guegan, Baptistse

    2014-09-01

    The Generalized Parton Distributions (GPDs) provide a new description of nucleon structure in terms of its elementary constituents, the quarks and the gluons. Including and extending the information provided by the form factors and the parton distribution functions, they describe the correlation between the transverse position and the longitudinal momentum fraction of the partons in the nucleon. Deeply Virtual Compton Scattering (DVCS), the electroproduction of a real photon on a single quark in the nucleon eN --> e'N'g, is the exclusive process most directly interpretable in terms of GPDs. A dedicated experiment to study DVCS with the CLAS detector at Jefferson Lab has been carried out using a 5.9-GeV polarized electron beam and an unpolarized hydrogen target, allowing us to collect DVCS events in the widest kinematic range ever explored in the valence region : 1.0 < Q2 < 4.6 GeV2, 0.1 < xB < 0.58 and 0.09 < -t < 2.0 GeV2. In this paper, we show preliminary results of unpolarized cross sections and of polarized cross section differences for the DVCS channel.

  12. Interactive graphical model building using telepresence and virtual reality

    SciTech Connect (OSTI)

    Cooke, C.; Stansfield, S.

    1993-10-01

    This paper presents a prototype system developed at Sandia National Laboratories to create and verify computer-generated graphical models of remote physical environments. The goal of the system is to create an interface between an operator and a computer vision system so that graphical models can be created interactively. Virtual reality and telepresence are used to allow interaction between the operator, computer, and remote environment. A stereo view of the remote environment is produced by two CCD cameras. The cameras are mounted on a three degree-of-freedom platform which is slaved to a mechanically-tracked, stereoscopic viewing device. This gives the operator a sense of immersion in the physical environment. The stereo video is enhanced by overlaying the graphical model onto it. Overlay of the graphical model onto the stereo video allows visual verification of graphical models. Creation of a graphical model is accomplished by allowing the operator to assist the computer in modeling. The operator controls a 3-D cursor to mark objects to be modeled. The computer then automatically extracts positional and geometric information about the object and creates the graphical model.

  13. Array of virtual Frisch-grid detectors with common cathode and reduced length of shielding electrodes

    DOE Patents [OSTI]

    Bolotnikov, Aleksey; James, Ralph B.; De Geronimo, Gianluigi; Vernon, Emerson

    2015-09-15

    A radiation detector system that effectively solves the electron trapping problem by optimizing shielding of individual virtual Frisch-grid detectors in an array configuration with a common cathode.

  14. Array of virtual Frisch-grid detectors with common cathode and reduced length of shielding electrodes

    DOE Patents [OSTI]

    Bolotnikov, Aleksey E.; Yang, Ge; Camarda, Giuseppe; Cui, Yonggang; Hossain, Anwar; Kim, Ki Hyun; James, Ralph B.

    2015-09-01

    A radiation detector system that solves the electron trapping problem by optimizing shielding of the individual virtual Frisch-grid detectors in an array configuration with a common cathode.

  15. BioenergizeME Virtual Science Fair: Bio-fuels-Sustainable Transportation-

    Broader source: Energy.gov [DOE]

    This infographic was created by students from Sun Valley High School in Aston, PA, as part of the U.S. Department of Energy-BioenergizeME Virtual Science Fair.

  16. BioenergizeME Virtual Science Fair: History of Bioengineering Over the Years

    Broader source: Energy.gov [DOE]

    This infographic was created by students from Sun Valley High School in Aston, PA, as part of the U.S. Department of Energy-BioenergizeME Virtual Science Fair.

  17. BioenergizeME Virtual Science Fair: The Environmental Benefit of Bioenergy

    Broader source: Energy.gov [DOE]

    This infographic was created by students from Sun Valley High School in Aston, PA, as part of the U.S. Department of Energy-BioenergizeME Virtual Science Fair.

  18. BioenergizeME Virtual Science Fair: Energy Production Diversity and Carreers

    Broader source: Energy.gov [DOE]

    This infographic was created by students from Sun Valley High School in Aston, PA, as part of the U.S. Department of Energy-BioenergizeME Virtual Science Fair.

  19. BioenergizeME Virtual Science Fair: Is Algae the Next Big Thing

    Broader source: Energy.gov [DOE]

    This infographic was created by students from Daniel Boone Area High School in Birdsboro, PA, as part of the U.S. Department of Energy-BioenergizeME Virtual Science Fair.

  20. SMART Wind Consortium Virtual Meeting on Installation: Reducing Electrical and Foundation Costs

    Broader source: Energy.gov [DOE]

    This 90-minute SMART Wind Consortium virtual meeting is intended to foster dialogue on actions to improve safety and efficiency and to reduce installation costs for distributed wind turbines. Gary...

  1. BioenergizeME Virtual Science Fair: Science & Technology Sustainable Transportation Fuels

    Broader source: Energy.gov [DOE]

    This infographic was created by students from Sun Valley High School in Aston, PA, as part of the U.S. Department of Energy-BioenergizeME Virtual Science Fair.

  2. Virtual Museum Captures Ohio Plant History: Web-based Project Preserves

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

    Plant's Uranium Enrichment Legacy | Department of Energy Virtual Museum Captures Ohio Plant History: Web-based Project Preserves Plant's Uranium Enrichment Legacy Virtual Museum Captures Ohio Plant History: Web-based Project Preserves Plant's Uranium Enrichment Legacy May 21, 2012 - 12:00pm Addthis An online museum on the Portsmouth Gaseous Diffusion Plant went live earlier this year. An online museum on the Portsmouth Gaseous Diffusion Plant went live earlier this year. PIKETON, Ohio - Do

  3. Energy Department Launches Virtual Hackathon to Build the Next Big Solar

    Office of Environmental Management (EM)

    Software Solutions | Department of Energy Virtual Hackathon to Build the Next Big Solar Software Solutions Energy Department Launches Virtual Hackathon to Build the Next Big Solar Software Solutions February 20, 2015 - 8:29am Addthis Last week, the Energy Department's SunShot Initiative launched the largest-of-its-kind, 60-day online hackathon to quickly build prototype solutions and products that address barriers to greater solar energy deployment and drive down the costs of solar energy.

  4. A COMPUTATIONAL WORKBENCH ENVIRONMENT FOR VIRTUAL POWER PLANT SIMULATION

    SciTech Connect (OSTI)

    Mike Bockelie; Dave Swensen; Martin Denison; Zumao Chen; Mike Maguire; Adel Sarofim; Changguan Yang; Hong-Shig Shim

    2004-01-28

    This is the thirteenth Quarterly Technical Report for DOE Cooperative Agreement No: DE-FC26-00NT41047. The goal of the project is to develop and demonstrate a Virtual Engineering-based framework for simulating the performance of Advanced Power Systems. Within the last quarter, good progress has been made on all aspects of the project. Software development efforts have focused on a preliminary detailed software design for the enhanced framework. Given the complexity of the individual software tools from each team (i.e., Reaction Engineering International, Carnegie Mellon University, Iowa State University), a robust, extensible design is required for the success of the project. In addition to achieving a preliminary software design, significant progress has been made on several development tasks for the program. These include: (1) the enhancement of the controller user interface to support detachment from the Computational Engine and support for multiple computer platforms, (2) modification of the Iowa State University interface-to-kernel communication mechanisms to meet the requirements of the new software design, (3) decoupling of the Carnegie Mellon University computational models from their parent IECM (Integrated Environmental Control Model) user interface for integration with the new framework and (4) development of a new CORBA-based model interfacing specification. A benchmarking exercise to compare process and CFD based models for entrained flow gasifiers was completed. A summary of our work on intrinsic kinetics for modeling coal gasification has been completed. Plans for implementing soot and tar models into our entrained flow gasifier models are outlined. Plans for implementing a model for mercury capture based on conventional capture technology, but applied to an IGCC system, are outlined.

  5. Red Hat Enterprise Virtualization - KVM-based infrastructure services at BNL

    SciTech Connect (OSTI)

    Cortijo, D.

    2011-06-14

    Over the past 18 months, BNL has moved a large percentage of its Linux-based servers and services into a Red Hat Enterprise Virtualization (RHEV) environment. This presentation will address our approach to virtualization, critical decision points, and a discussion of our implementation. Specific topics will include an overview of hardware and software requirements, networking, and storage; discussion of the decision of Red Hat solution over competing products (VMWare, Xen, etc); details on some of the features of RHEV - both current and on their roadmap; Review of performance and reliability gains since deployment completion; path forward for RHEV at BNL and caveats and potential problems.

  6. Selection of Light Duty Truck Engine Air Systems Using Virtual Lab Tests

    SciTech Connect (OSTI)

    Zhang, Houshun

    2000-08-20

    An integrated development approach using seasoned engine technology methodologies, virtual lab parametric investigations, and selected hardware verification tests reflects today's state-of-the-art R&D trends. This presentation will outline such a strategy. The use of this ''Wired'' approach results in substantial reduction in the development cycle time and hardware iterations. An example showing the virtual lab application for a viable design of the air-exhaust-turbocharger system of a light duty truck engine for personal transportation will be presented.

  7. Soft-virtual corrections to Higgs production at N 3 LO (Journal Article) |

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect Soft-virtual corrections to Higgs production at N 3 LO Citation Details In-Document Search Title: Soft-virtual corrections to Higgs production at N 3 LO Authors: Li, Ye ; von Manteuffel, Andreas ; Schabinger, Robert M. ; Zhu, Hua Xing Publication Date: 2015-02-27 OSTI Identifier: 1179874 Grant/Contract Number: AC02-76SF00515 Type: Publisher's Accepted Manuscript Journal Name: Physical Review D Additional Journal Information: Journal Volume: 91; Journal Issue: 3; Journal ID:

  8. EcoCAR2 Teams Start their Virtual Engines | Department of Energy

    Office of Environmental Management (EM)

    EcoCAR2 Teams Start their Virtual Engines EcoCAR2 Teams Start their Virtual Engines May 17, 2012 - 4:11pm Addthis A North Carolina State University student works on an EcoCAR vehicle at the Year 3 finals last year in Milford, MI. | Energy Department photo. A North Carolina State University student works on an EcoCAR vehicle at the Year 3 finals last year in Milford, MI. | Energy Department photo. Shannon Brescher Shea Communications Manager, Clean Cities Program What are the key facts?

  9. Chemical Characterization of Individual Particles and Residuals of Cloud Droplets and Ice Crystals Collected On Board Research Aircraft in the ISDAC 2008 Study

    SciTech Connect (OSTI)

    Hiranuma, Naruki; Brooks, Sarah D.; Moffet, Ryan C.; Glen, Andrew; Laskin, Alexander; Gilles, Marry K.; Liu, Peter; MacDonald, A. M.; Strapp, J. Walter; McFarquhar, Greg

    2013-06-24

    Although it has been shown that size of atmospheric particles has a direct correlation with their ability to act as cloud droplet and ice nuclei, the influence of composition of freshly emitted and aged particles in nucleation processes is poorly understood. In this work we combine data from field measurements of ice nucleation with chemical imaging of the sampled particles to link aerosol composition with ice nucleation ability. Field measurements and sampling were conducted during the Indirect and Semidirect Aerosols Campaign (ISDAC) over Barrow, Alaska, in the springtime of 2008. In-situ ice nucleation measurements were conducted using a Continuous Flow Diffusion Chamber (CFDC). Measured number concentrations of ice nuclei (IN) varied from frequent values of 0.01 per liter to more than 10 per liter. Residuals of airborne droplets and ice crystals were collected through a counterflow virtual impactor (CVI). The compositions of individual atmospheric particles and the residuals were studied using Computer Controlled Scanning Electron Microscopy with Energy Dispersive X-ray analysis (CCSEM/EDX) and Scanning Transmission X-ray Microscopy coupled with Near Edge X-ray Absorption Fine Structure spectroscopy (STXM/NEXAFS). Chemical analysis of cloud particle residuals collected during an episode of high ice nucleation suggests that both size and composition may influence aerosol's ability to act as IN. The STXM/NEXAFS chemical composition maps of individual residuals have characteristic structures of either inorganic or black carbon cores coated by organic materials. In a separate flight, particle samples from a biomass burning plume were collected. Although it has previously been suggested that episodes of biomass burning contribute to increased numbers of highly effective ice nuclei, in this episode we observed that only a small fraction were effective ice nuclei. Most of the particles from the biomass plume episode were smaller in size and were composed of homogeneous organic material without identifiable cores.

  10. Virtually distortion-free imaging system for large field, high resolution lithography

    DOE Patents [OSTI]

    Hawryluk, A.M.; Ceglio, N.M.

    1993-01-05

    Virtually distortion free large field high resolution imaging is performed using an imaging system which contains large field distortion or field curvature. A reticle is imaged in one direction through the optical system to form an encoded mask. The encoded mask is then imaged back through the imaging system onto a wafer positioned at the reticle position.

  11. The Conforming Virtual Element Method for the convection-diffusion-reaction equation with variable coeffcients.

    SciTech Connect (OSTI)

    Manzini, Gianmarco; Cangiani, Andrea; Sutton, Oliver

    2014-10-02

    This document describes the conforming formulations for virtual element approximation of the convection-reaction-diffusion equation with variable coefficients. Emphasis is given to construction of the projection operators onto polynomial spaces of appropriate order. These projections make it possible the virtual formulation to achieve any order of accuracy. We present the construction of the internal and the external formulation. The difference between the two is in the way the projection operators act on the derivatives (laplacian, gradient) of the partial differential equation. For the diffusive regime we prove the well-posedness of the external formulation and we derive an estimate of the approximation error in the H1-norm. For the convection-dominated case, the streamline diffusion stabilization (aka SUPG) is also discussed.

  12. Final report for the virtual channel encryptor laboratory directed research and development project

    SciTech Connect (OSTI)

    Gibson, D.J.; Sarfaty, R.A.

    1997-08-01

    A workstation with a single physical connection to a data communications network may have a requirement for simultaneous `virtual` communication channels to more than one destination. This report describes the development of techniques based on the Data Encryption Standard (DES) which encrypt these virtual channels to secure the data being transmitted against unauthorized access. A software module has been developed for the UNIX operating system using these techniques for encryption, and some development has also been done on a hardware device to be included between the workstation and network which can also provide these functions. The material presented in this report will be useful to those with a need to protect information in data communications systems from unauthorized access.

  13. National laboratories` capabilities summaries for the DOE Virtual Center for Multiphase Dynamics (VCMD)

    SciTech Connect (OSTI)

    Joyce, E.L.

    1997-03-01

    The Virtual Center For Multiphase Dynamics (VCMD) integrates and develops the resources of industry, government, academia, and professional societies to enable reliable analysis in multiphase computational fluid dynamics. The primary means of the VCMD focus will be by the creation, support, and validation of a computerized simulation capability for multiphase flow and multiphase flow applications. This paper briefly describes the capabilities of the National Laboratories in this effort.

  14. Virtual “Open House” Makes it Easier to Tour NETL Labs

    Broader source: Energy.gov [DOE]

    The Office of Fossil Energy’s National Energy Technology Laboratory has made it easier for you to know what it is like to work in a first class technology lab with a one-stop web “open house” that provides an overview from the lab’s director, briefings from other lab leaders, and a virtual tour of its sites in Oregon, Pennsylvania, and West Virginia.

  15. Analyzing reliability of virtual machine instances with dynamic pricing in the public cloud

    SciTech Connect (OSTI)

    Lim, Seung-Hwan; Thakur, Gautam; Horey, James L

    2014-01-01

    This study presents reliability analysis of virtual machine instances in public cloud environments in the face of dynamic pricing. Different from traditional fixed pricing, dynamic pricing allows price to dynamically fluctuate over arbitrary period of time according to external factors such as supply and demand, excess capacity, etc. This pricing option introduces a new type of fault: virtual machine instances may be unexpectedly terminated due to conflicts in the original bid price and the current offered price. This new class of fault under dynamic pricing may be more dominant than traditional faults in cloud computing environments, where resource availability associated with traditional faults is often above 99.9%. To address and understand this new type of fault, we translated two classic reliability metrics, mean time between failures and availability, to the Amazon Web Services spot market using historical price data. We also validated our findings by submitting actual bids in the spot market. We found that overall, our historical analysis and experimental validation lined up well. Based upon these experimental results, we also provided suggestions and techniques to maximize overall reliability of virtual machine instances under dynamic pricing.

  16. Cyber-Physical System Security With Deceptive Virtual Hosts for Industrial Control Networks

    SciTech Connect (OSTI)

    Vollmer, Todd; Manic, Milos

    2014-05-01

    A challenge facing industrial control network administrators is protecting the typically large number of connected assets for which they are responsible. These cyber devices may be tightly coupled with the physical processes they control and human induced failures risk dire real-world consequences. Dynamic virtual honeypots are effective tools for observing and attracting network intruder activity. This paper presents a design and implementation for self-configuring honeypots that passively examine control system network traffic and actively adapt to the observed environment. In contrast to prior work in the field, six tools were analyzed for suitability of network entity information gathering. Ettercap, an established network security tool not commonly used in this capacity, outperformed the other tools and was chosen for implementation. Utilizing Ettercap XML output, a novel four-step algorithm was developed for autonomous creation and update of a Honeyd configuration. This algorithm was tested on an existing small campus grid and sensor network by execution of a collaborative usage scenario. Automatically created virtual hosts were deployed in concert with an anomaly behavior (AB) system in an attack scenario. Virtual hosts were automatically configured with unique emulated network stack behaviors for 92% of the targeted devices. The AB system alerted on 100% of the monitored emulated devices.

  17. Cyber-Physical System Security With Deceptive Virtual Hosts for Industrial Control Networks

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Vollmer, Todd; Manic, Milos

    2014-05-01

    A challenge facing industrial control network administrators is protecting the typically large number of connected assets for which they are responsible. These cyber devices may be tightly coupled with the physical processes they control and human induced failures risk dire real-world consequences. Dynamic virtual honeypots are effective tools for observing and attracting network intruder activity. This paper presents a design and implementation for self-configuring honeypots that passively examine control system network traffic and actively adapt to the observed environment. In contrast to prior work in the field, six tools were analyzed for suitability of network entity information gathering. Ettercap, anmore » established network security tool not commonly used in this capacity, outperformed the other tools and was chosen for implementation. Utilizing Ettercap XML output, a novel four-step algorithm was developed for autonomous creation and update of a Honeyd configuration. This algorithm was tested on an existing small campus grid and sensor network by execution of a collaborative usage scenario. Automatically created virtual hosts were deployed in concert with an anomaly behavior (AB) system in an attack scenario. Virtual hosts were automatically configured with unique emulated network stack behaviors for 92% of the targeted devices. The AB system alerted on 100% of the monitored emulated devices.« less

  18. Advanced product realization through model-based design and virtual prototyping

    SciTech Connect (OSTI)

    Andreas, R.D.

    1995-03-01

    Several government agencies and industrial sectors have recognized the need for, and payoff of, investing in the methodologies and associated technologies for improving the product realization process. Within the defense community as well as commercial industry, there are three major needs. First, they must reduce the cost of military products, of related manufacturing processes, and of the enterprises that have to be maintained. Second, they must reduce the time required to realize products while still applying the latest technologies. Finally, they must improve the predictability of process attributes, product performance, cost, schedule and quality. They must continue to advance technology, quickly incorporate their innovations in new products and in processes to produce them, and they need to capitalize on the raw computational power and communications bandwidth that continues to become available at decreasing cost. Sandia National Laboratories initiative is pursuing several interrelated, key concepts and technologies in order to enable such product realization process improvements: model-based design; intelligent manufacturing processes; rapid virtual and physical prototyping; and agile people/enterprises. While progress in each of these areas is necessary, this paper only addresses a portion of the overall initiative. First a vision of a desired future capability in model-based design and virtual prototyping is presented. This is followed by a discussion of two specific activities parametric design analysis of Synthetic Aperture Radars (SARs) and virtual prototyping of miniaturized high-density electronics -- that exemplify the vision as well as provide a status report on relevant work in progress.

  19. The 'virtual density' principle of neutronics: Toward rapid computation of reactivity effects in practical core distortion scenarios

    SciTech Connect (OSTI)

    Reed, M.; Smith, K.; Forget, B.

    2013-07-01

    Fast reactor core reactivities are sensitive to geometric distortions arising from three distinct phenomena: (1) irradiation swelling of fuel throughout core lifetime, (2) thermal expansion of fuel during transients, and (3) mechanical oscillations during seismic events. Performing comprehensive reactivity analysis of these distortions requires methods for rapidly computing a multitude of minute reactivity changes. Thus, we introduce the 'virtual density' principle of neutronics as a new perturbation technique to achieve this rapid computation. This new method obviates many of the most challenging aspects of conventional geometric perturbation theory. Essentially, this 'virtual density' principle converts geometric perturbations into equivalent material density perturbations (either isotropic or anisotropic), which are highly accurate and comparatively simple to evaluate. While traditional boundary perturbation theory employs surface integrals, the 'virtual density' principle employs equivalent volume integrals. We introduce and validate this method in three subsequent stages: (1) isotropic 'virtual density', (2) anisotropic 'virtual density' for whole cores, and (3) anisotropic 'virtual density' for interior zones within cores. We numerically demonstrate its accuracy for 2-D core flowering scenarios. (authors)

  20. Virtual Sensing

    Broader source: Energy.gov [DOE]

    Lead Performer: Lawrence Berkeley National Laboratory (LBNL) – Berkeley, CA Partners: -- Pacific Northwest National Laboratory (PNNL) – Richland, WA -- Oak Ridge National Laboratory (ORNL) – Oak Ridge, TN

  1. Water Energy Resource Data from Idaho National Laboratory's Virtual Hydropower Prospector

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

    The mission of the U.S. Department of Energy's (DOE's) Hydropower Program is to conduct research and development (R&D) that will improve the technical, societal, and environmental benefits of hydropower and provide cost-competitive technologies that enable the development of new and incremental hydropower capacity, adding diversity to the nation's energy supply. The Virtual Hydropower Prospector is a GIS application to locate and evaluate natural stream water energy resources. In the interactive data map the U.S. is divided into 20 hydrologic regions. The Prospector tool applies an analytical process to determine the gross power potential of these regions and helps users to site potential hydropower projects.

  2. Development of realistic physical breast phantoms matched to virtual breast phantoms based on human subject data

    SciTech Connect (OSTI)

    Kiarashi, Nooshin; Nolte, Adam C.; Sturgeon, Gregory M.; Ghate, Sujata V.; Segars, William P.; Nolte, Loren W.; Samei, Ehsan; and others

    2015-07-15

    Purpose: Physical phantoms are essential for the development, optimization, and evaluation of x-ray breast imaging systems. Recognizing the major effect of anatomy on image quality and clinical performance, such phantoms should ideally reflect the three-dimensional structure of the human breast. Currently, there is no commercially available three-dimensional physical breast phantom that is anthropomorphic. The authors present the development of a new suite of physical breast phantoms based on human data. Methods: The phantoms were designed to match the extended cardiac-torso virtual breast phantoms that were based on dedicated breast computed tomography images of human subjects. The phantoms were fabricated by high-resolution multimaterial additive manufacturing (3D printing) technology. The glandular equivalency of the photopolymer materials was measured relative to breast tissue-equivalent plastic materials. Based on the current state-of-the-art in the technology and available materials, two variations were fabricated. The first was a dual-material phantom, the Doublet. Fibroglandular tissue and skin were represented by the most radiographically dense material available; adipose tissue was represented by the least radiographically dense material. The second variation, the Singlet, was fabricated with a single material to represent fibroglandular tissue and skin. It was subsequently filled with adipose-equivalent materials including oil, beeswax, and permanent urethane-based polymer. Simulated microcalcification clusters were further included in the phantoms via crushed eggshells. The phantoms were imaged and characterized visually and quantitatively. Results: The mammographic projections and tomosynthesis reconstructed images of the fabricated phantoms yielded realistic breast background. The mammograms of the phantoms demonstrated close correlation with simulated mammographic projection images of the corresponding virtual phantoms. Furthermore, power-law descriptions of the phantom images were in general agreement with real human images. The Singlet approach offered more realistic contrast as compared to the Doublet approach, but at the expense of air bubbles and air pockets that formed during the filling process. Conclusions: The presented physical breast phantoms and their matching virtual breast phantoms offer realistic breast anatomy, patient variability, and ease of use, making them a potential candidate for performing both system quality control testing and virtual clinical trials.

  3. Virtual Pipeline System Testbed to Optimize the U.S. Natural Gas Transmission Pipeline System

    SciTech Connect (OSTI)

    Kirby S. Chapman; Prakash Krishniswami; Virg Wallentine; Mohammed Abbaspour; Revathi Ranganathan; Ravi Addanki; Jeet Sengupta; Liubo Chen

    2005-06-01

    The goal of this project is to develop a Virtual Pipeline System Testbed (VPST) for natural gas transmission. This study uses a fully implicit finite difference method to analyze transient, nonisothermal compressible gas flow through a gas pipeline system. The inertia term of the momentum equation is included in the analysis. The testbed simulate compressor stations, the pipe that connects these compressor stations, the supply sources, and the end-user demand markets. The compressor station is described by identifying the make, model, and number of engines, gas turbines, and compressors. System operators and engineers can analyze the impact of system changes on the dynamic deliverability of gas and on the environment.

  4. Manifold compositions, music visualization, and scientific sonification in an immersive virtual-reality environment.

    SciTech Connect (OSTI)

    Kaper, H. G.

    1998-01-05

    An interdisciplinary project encompassing sound synthesis, music composition, sonification, and visualization of music is facilitated by the high-performance computing capabilities and the virtual-reality environments available at Argonne National Laboratory. The paper describes the main features of the project's centerpiece, DIASS (Digital Instrument for Additive Sound Synthesis); ''A.N.L.-folds'', an equivalence class of compositions produced with DIASS; and application of DIASS in two experiments in the sonification of complex scientific data. Some of the larger issues connected with this project, such as the changing ways in which both scientists and composers perform their tasks, are briefly discussed.

  5. Virtual tool mark generation for efficient striation analysis in forensic science

    SciTech Connect (OSTI)

    Ekstrand, Laura

    2012-11-16

    In 2009, a National Academy of Sciences report called for investigation into the scienti#12;c basis behind tool mark comparisons (National Academy of Sciences, 2009). Answering this call, Chumbley et al. (2010) attempted to prove or disprove the hypothesis that tool marks are unique to a single tool. They developed a statistical algorithm that could, in most cases, discern matching and non-matching tool marks made at di#11;erent angles by sequentially numbered screwdriver tips. Moreover, in the cases where the algorithm misinterpreted a pair of marks, an experienced forensics examiner could discern the correct outcome. While this research served to con#12;rm the basic assumptions behind tool mark analysis, it also suggested that statistical analysis software could help to reduce the examiner's workload. This led to a new tool mark analysis approach, introduced in this thesis, that relies on 3D scans of screwdriver tip and marked plate surfaces at the micrometer scale from an optical microscope. These scans are carefully cleaned to remove noise from the data acquisition process and assigned a coordinate system that mathematically de#12;nes angles and twists in a natural way. The marking process is then simulated by using a 3D graphics software package to impart rotations to the tip and take the projection of the tip's geometry in the direction of tool travel. The edge of this projection, retrieved from the 3D graphics software, becomes a virtual tool mark. Using this method, virtual marks are made at increments of 5#14; and compared to a scan of the evidence mark. The previously developed statistical package from Chumbley et al. (2010) performs the comparison, comparing the similarity of the geometry of both marks to the similarity that would occur due to random chance. The resulting statistical measure of the likelihood of the match informs the examiner of the angle of the best matching virtual mark, allowing the examiner to focus his/her mark analysis on a smaller range of angles. Preliminary results are quite promising. In a study with both sides of 6 screwdriver tips and 34 corresponding marks, the method distinguished known matches from known non-matches with zero false positive matches and only two matches mistaken for non-matches. For matches, it could predict the correct marking angle within #6;5-10#14;. Moreover, on a standard desktop computer, the virtual marking software is capable of cleaning 3D tip and plate scans in minutes and producing a virtual mark and comparing it to a real mark in seconds. These results support several of the professional conclusions of the tool mark analysis com- munity, including the idea that marks produced by the same tool only match if they are made at similar angles. The method also displays the potential to automate part of the comparison process, freeing the examiner to focus on other tasks, which is important in busy, backlogged crime labs. Finally, the method o#11;ers the unique chance to directly link an evidence mark to the tool that produced it while reducing potential damage to the evidence.

  6. Virtual ultrasound sources for inspecting nuclear components of coarse-grained structure

    SciTech Connect (OSTI)

    Brizuela, J.; Katchadjian, P.; Desimone, C.; Garcia, A.

    2014-02-18

    This work describes an ultrasonic inspection procedure designed for verifying coarse-grained structure materials, which are commonly used on nuclear reactors. In this case, conventional phased array techniques cannot be used due to attenuating characteristics and backscattered noise from microstructures inside the material. Thus, synthetic aperture ultrasonic imaging (SAFT) is used for this approach in contact conditions. In order to increase energy transferred to the medium, synthetic transmit aperture is formed by several elements which generate a diverging wavefront equivalent to a virtual ultrasound source behind the transducer. On the other hand, the phase coherence technique has been applied to reduce more structural noise and improve the image quality. The beamforming process has been implemented over a GPU platform to reduce computing time.

  7. Mapping virtual addresses to different physical addresses for value disambiguation for thread memory access requests

    DOE Patents [OSTI]

    Gala, Alan; Ohmacht, Martin

    2014-09-02

    A multiprocessor system includes nodes. Each node includes a data path that includes a core, a TLB, and a first level cache implementing disambiguation. The system also includes at least one second level cache and a main memory. For thread memory access requests, the core uses an address associated with an instruction format of the core. The first level cache uses an address format related to the size of the main memory plus an offset corresponding to hardware thread meta data. The second level cache uses a physical main memory address plus software thread meta data to store the memory access request. The second level cache accesses the main memory using the physical address with neither the offset nor the thread meta data after resolving speculation. In short, this system includes mapping of a virtual address to a different physical addresses for value disambiguation for different threads.

  8. BacNet and Analog/Digital Interfaces of the Building Controls Virtual Testbed

    SciTech Connect (OSTI)

    Nouidui, Thierry Stephane; Wetter, Michael; Li, Zhengwei; Pang, Xiufeng; Bhattachayra, Prajesh; Haves, Philip

    2011-11-01

    This paper gives an overview of recent developments in the Building Controls Virtual Test Bed (BCVTB), a framework for co-simulation and hardware-in-the- loop. First, a general overview of the BCVTB is presented. Second, we describe the BACnet interface, a link which has been implemented to couple BACnet devices to the BCVTB. We present a case study where the interface was used to couple a whole building simulation program to a building control system to assess in real-time the performance of a real building. Third, we present the ADInterfaceMCC, an analog/digital interface that allows a USB-based analog/digital converter to be linked to the BCVTB. In a case study, we show how the link was used to couple the analog/digital converter to a building simulation model for local loop control.

  9. Exploration of deeply virtual Compton scattering on the neutron in the Hall A of Jefferson Laboratory

    SciTech Connect (OSTI)

    Malek Mazouz

    2006-12-08

    Generalized Parton Distributions (GPDs) are universal functions which provide a comprehensive description of hadron properties in terms of quarks and gluons. Deeply Virtual Compton Scattering (DVCS) is the simplest hard exclusive process involving GPDs. In particular, the DVCS on the neutron is mostly sensitive to E, the less constrained GPD, wich allows to access to the quark angular momentum. The first dedicated DVCS experiment on the neutron ran in the Hall A of Jefferson Lab in fall 2004. The high luminosity of the experiment and the resulting background rate recquired specific devices which are decribed in this document. The analysis methods and the experiment results, leading to preliminary constraints on the GPD E, are presented.

  10. Improved particle impactor assembly for size selective high volume air sampler

    DOE Patents [OSTI]

    Langer, G.

    1987-03-23

    Air containing entrained particulate matter is directed through a plurality of parallel, narrow, vertically oriented apertures of an inlet element toward an adjacently located, relatively large, dust impaction surface preferably covered with an adhesive material. The air flow turns over the impaction surface, leaving behind, the relatively larger particles and passes through two elongate apertures defining the outer bounds of the impaction collection surface to pass through divergent passages which slow down and distribute the air flow, with entrained smaller particles, over a fine filter element that separates the fine particles from the air. By appropriate selection of dimensions and the number of inlet apertures air flow through the inlet element is provided a nonuniform velocity distribution with the lower velocities being obtained near the center of the inlet apertures, to separate out particles larger than a certain predetermined size on the impaction collection surface. The impaction collection surface, even in a moderately sized apparatus, is thus relatively large and permits the prolonged sampling of air for periods extending to four weeks. 6 figs.

  11. OPTIMIZATION OF VIRTUAL FRISCH-GRID CdZnTe DETECTOR DESIGNS FOR IMAGING AND SPECTROSCOPY OF GAMMA RAYS.

    SciTech Connect (OSTI)

    BOLOTNIKOV,A.E.; ABDUL-JABBAR, N.M.; BABALOLA, S.; CAMARDA, G.S.; CUI, Y.; HOSSAIN, A.; JACKSON, E.; JACKSON, H.; JAMES, J.R.; LURYI, A.L.; JAMES, R.B.

    2007-08-21

    In the past, various virtual Frisch-grid designs have been proposed for cadmium zinc telluride (CZT) and other compound semiconductor detectors. These include three-terminal, semi-spherical, CAPture, Frisch-ring, capacitive Frisch-grid and pixel devices (along with their modifications). Among them, the Frisch-grid design employing a non-contacting ring extended over the entire side surfaces of parallelepiped-shaped CZT crystals is the most promising. The defect-free parallelepiped-shaped crystals with typical dimensions of 5x5{approx}12 mm3 are easy to produce and can be arranged into large arrays used for imaging and gamma-ray spectroscopy. In this paper, we report on further advances of the virtual Frisch-grid detector design for the parallelepiped-shaped CZT crystals. Both the experimental testing and modeling results are described.

  12. Virtuality Distributions in application to gamma gamma* to pi^0 Transition Form Factor at Handbag Level

    SciTech Connect (OSTI)

    Radyushkin, Anatoly V.

    2014-07-01

    We outline basics of a new approach to transverse momentum dependence in hard processes. As an illustration, we consider hard exclusive transition process gamma*gamma -> to pi^0 at the handbag level. Our starting point is coordinate representation for matrix elements of operators (in the simplest case, bilocal O(0,z)) describing a hadron with momentum p. Treated as functions of (pz) and z^2, they are parametrized through a virtuality distribution amplitude (VDA) Phi (x, sigma), with x being Fourier-conjugate to (pz) and sigma Laplace-conjugate to z^2. For intervals with z^+=0, we introduce transverse momentum distribution amplitude (TMDA) Psi (x, k_\\perp), and write it in terms of VDA Phi (x, \\sigma). The results of covariant calculations, written in terms of Phi (x sigma) are converted into expressions involving Psi (x, k_\\perp. Starting with scalar toy models, we extend the analysis onto the case of spin-1/2 quarks and QCD. We propose simple models for soft VDAs/TMDAs, and use them for comparison of handbag results with experimental (BaBar and BELLE) data on the pion transition form factor. We also discuss how one can generate high-k_\\perp tails from primordial soft distributions.

  13. Soft Expansion of Double-Real-Virtual Corrections to Higgs Production at N$^3$LO

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Anastasiou, Charalampos; Duhr, Claude; Dulat, Falko; Furlan, Elisabetta; Herzog, Franz; Mistlberger, Bernhard

    2015-05-15

    We present methods to compute higher orders in the threshold expansion for the one-loop production of a Higgs boson in association with two partons at hadron colliders. This process contributes to the N3LO Higgs production cross section beyond the soft-virtual approximation. We use reverse unitarity to expand the phase-space integrals in the small kinematic parameters and to reduce the coefficients of the expansion to a small set of master integrals. We describe two methods for the calculation of the master integrals. The first was introduced for the calculation of the soft triple-real radiation relevant to N3LO Higgs production. The secondmore » uses a particular factorization of the three body phase-space measure and the knowledge of the scaling properties of the integral itself. Our result is presented as a Laurent expansion in the dimensional regulator, although some of the master integrals are computed to all orders in this parameter.« less

  14. Virtuality Distributions and ??* -> ?0 Transition at Handbag Level

    SciTech Connect (OSTI)

    Radyushkin, Anatoly V.

    2015-09-01

    We outline a new approach to transverse momentum dependence in hard processes using as an example the exclusive transition ${\\gamma^{*}\\gamma \\to \\pi^{0}}$ at the handbag level. We start with the coordinate representation for a matrix element ${\\langle p |{\\cal O}(0,z) |0 \\rangle}$ of a bilocal operator ${{\\cal O} (0,z)}$ describing a hadron with momentum p. Treated as a function of (pz) and z$^{2}$, it is parametrized through virtuality distribution amplitude (VDA) ? (x, ?), with x being Fourier-conjugate to (pz) and ? Laplace-conjugate to z$^{2}$. For intervals with z$^{+}$ = 0, we introduce the transverse momentum distribution amplitude (TMDA) ${\\? (x,k_{\\perp})}$ , and write it in terms of VDA ? (x, ?). The results of covariant calculations, written in terms of ? (x, ?) are converted into expressions involving ${\\? (x,k_{\\perp})}$ . We propose simple models for soft VDAs/TMDAs, and use them for comparison of handbag results with experimental (BaBar and BELLE) data on the pion transition form factor.

  15. Analysis of CCRL proficiency cements 151 and 152 using the Virtual Cement and Concrete Testing Laboratory

    SciTech Connect (OSTI)

    Bullard, Jeffrey W. . E-mail: jeffrey.bullard@nist.gov; Stutzman, Paul E.

    2006-08-15

    To test the ability of the Virtual Cement and Concrete Testing Laboratory (VCCTL) software to predict cement hydration properties, characterization of mineralogy and phase distribution is necessary. Compositional and textural characteristics of Cement and Concrete Reference Laboratory (CCRL) cements 151 and 152 were determined via scanning electron microscopy (SEM) analysis followed by computer modeling of hydration properties. The general procedure to evaluate a cement is as follows: (1) two-dimensional SEM backscattered electron and X-ray microanalysis images of the cement are obtained, along with a measured particle size distribution (PSD); (2) based on analysis of these images and the measured PSD, three-dimensional microstructures of various water-to-cement ratios are created and hydrated using VCCTL, and (3) the model predictions for degree of hydration under saturated conditions, heat of hydration (ASTM C186), setting time (ASTM C191), and strength development of mortar cubes (ASTM C109) are compared to experimental measurements either performed at NIST or at the participating CCRL proficiency sample evaluation laboratories. For both cements, generally good agreement is observed between the model predictions and the experimental data.

  16. Improving Memory Subsystem Performance Using ViVA: Virtual Vector Architecture

    SciTech Connect (OSTI)

    Gebis, Joseph; Oliker, Leonid; Shalf, John; Williams, Samuel; Yelick, Katherine

    2009-01-12

    The disparity between microprocessor clock frequencies and memory latency is a primary reason why many demanding applications run well below peak achievable performance. Software controlled scratchpad memories, such as the Cell local store, attempt to ameliorate this discrepancy by enabling precise control over memory movement; however, scratchpad technology confronts the programmer and compiler with an unfamiliar and difficult programming model. In this work, we present the Virtual Vector Architecture (ViVA), which combines the memory semantics of vector computers with a software-controlled scratchpad memory in order to provide a more effective and practical approach to latency hiding. ViVA requires minimal changes to the core design and could thus be easily integrated with conventional processor cores. To validate our approach, we implemented ViVA on the Mambo cycle-accurate full system simulator, which was carefully calibrated to match the performance on our underlying PowerPC Apple G5 architecture. Results show that ViVA is able to deliver significant performance benefits over scalar techniques for a variety of memory access patterns as well as two important memory-bound compact kernels, corner turn and sparse matrix-vector multiplication -- achieving 2x-13x improvement compared the scalar version. Overall, our preliminary ViVA exploration points to a promising approach for improving application performance on leading microprocessors with minimal design and complexity costs, in a power efficient manner.

  17. Data And Informatics Working Group On Virtual Data Integration Workshop Report

    SciTech Connect (OSTI)

    Williams, D. N.; Palanisamy, G.; Dam, K. K.

    2015-10-13

    This report is the outcome of a workshop that was commissioned by the Department of Energy’s Climate and Environmental Sciences Division (CESD) to examine current and future data infrastructure requirements that would be foundational to achieving CESD’s scientific mission goals. Over the past several years, data volumes in CESD disciplines have risen sharply to unprecedented levels (tens of petabytes). So too has the complexity and diversity of the research data (simulation, observation, and reanalysis) needing to be captured, stored, verified, analyzed, and integrated. With the trends of increased data volume (in the hundreds of petabytes), more complex analysis processes, and growing crossdisciplinary collaborations, it is timely to investigate whether the CESD community has the right computational and data support to realize the full scientific potential from its data collections. In recognition of the challenges, a partnership is forming across CESD and with national and international agencies to investigate the viability of creating an integrated, collaborative data infrastructure: a virtual laboratory. The overarching goal of this report is to identify the community’s key data technology requirements and high-priority development needs for sustaining and growing their scientific discovery potential. The report also aims to map these requirements to existing solutions and to identify gaps in current services, tools, and infrastructure that will need to be addressed in the short, medium, and long term so as not to impede scientific progress

  18. Virtually distortion-free imaging system for large field, high resolution lithography using electrons, ions or other particle beams

    DOE Patents [OSTI]

    Hawryluk, A.M.; Ceglio, N.M.

    1993-01-12

    Virtually distortion free large field high resolution imaging is performed using an imaging system which contains large field distortion or field curvature. A reticle is imaged in one direction through the optical system to form an encoded mask. The encoded mask is then imaged back through the imaging system onto a wafer positioned at the reticle position. Particle beams, including electrons, ions and neutral particles, may be used as well as electromagnetic radiation.

  19. PMU Data Integrity Evaluation through Analytics on a Virtual Test-Bed

    SciTech Connect (OSTI)

    Olama, Mohammed M.; Shankar, Mallikarjun

    2014-01-01

    Power systems are rapidly becoming populated by phasor measurement units (PMUs) in ever increasing numbers. PMUs are critical components of today s energy management systems, designed to enable near real-time wide area monitoring and control of the electric power system. They are able to measure highly accurate bus voltage phasors as well as branch current phasors incident to the buses at which PMUs are equipped. Synchrophasor data is used for applications varying from state estimation, islanding control, identifying outages, voltage stability detection and correction, disturbance recording, and others. However, PMU-measured readings may suffer from errors due to meter biases or drifts, incorrect configurations, or even cyber-attacks. Furthermore, the testing of early PMUs showed a large disparity between the reported values from PMUs provided by different manufacturers, particularly when frequency was off-nominal, during dynamic events, and when harmonic/inter-harmonic content was present. Detection and identification of PMU gross measurement errors are thus crucial in maintaining highly accurate phasor readings throughout the system. In this paper, we present our work in conducting analytics to determine the trustworthiness and worth of the PMU readings collected across an electric network system. By implementing the IEEE 118 bus test case on a virtual test bed (VTB) , we are able to emulate PMU readings (bus voltage and branch current phasors in addition to bus frequencies) under normal and abnormal conditions using (virtual) PMU sensors deployed across major substations in the network. We emulate a variety of failures such as bus, line, transformer, generator, and/or load failures. Data analytics on the voltage phase angles and frequencies collected from the PMUs show that specious (or compromised) PMU device(s) can be identified through abnormal behaviour by comparing the trend of its frequency and phase angle reading with the ensemble of all other PMU readings in the network. If the reading trend of a particular PMU deviates from the weighted average of the reading trends of other PMUs at nearby substations, then it is likely that the PMU is malfunctioning. We assign a weight to each PMU denoting how electric-topology-wise close it is from where the PMU under consideration is located. The closer a PMU is, the higher the weight it has. To compute the closeness between two nodes in the power network, we employ a form of the resistance distance metric. It computes the electrical distance by taking into consideration the underlying topology as well as the physical laws that govern the electrical connections or flows between the network components. The detection accuracy of erroneous PMUs should be improved by employing this metric. We present results to validate the proposed approach. We also discuss the effectiveness of using an end-to-end VTB approach that allows us to investigate different types of failures and their responses as seen by the ensemble of PMUs. The collected data on certain types of events may be amenable to certain types of analysis (e.g., alerting for sudden changes can be done on a small window of data) and hence determine the data analytics architectures is required to evaluate the streaming PMU data.

  20. Specification of requirements for the virtual environment for reactor applications simulation environment

    SciTech Connect (OSTI)

    Hess, S. M.; Pytel, M.

    2012-07-01

    In 2010, the United States Dept. of Energy initiated a research and development effort to develop modern modeling and simulation methods that could utilize high performance computing capabilities to address issues important to nuclear power plant operation, safety and sustainability. To respond to this need, a consortium of national laboratories, academic institutions and industry partners (the Consortium for Advanced Simulation of Light Water Reactors - CASL) was formed to develop an integrated Virtual Environment for Reactor Applications (VERA) modeling and simulation capability. A critical element for the success of the CASL research and development effort was the development of an integrated set of overarching requirements that provides guidance in the planning, development, and management of the VERA modeling and simulation software. These requirements also provide a mechanism from which the needs of a broad array of external CASL stakeholders (e.g. reactor / fuel vendors, plant owner / operators, regulatory personnel, etc.) can be identified and integrated into the VERA development plans. This paper presents an overview of the initial set of requirements contained within the VERA Requirements Document (VRD) that currently is being used to govern development of the VERA software within the CASL program. The complex interdisciplinary nature of these requirements together with a multi-physics coupling approach to realize a core simulator capability pose a challenge to how the VRD should be derived and subsequently revised to accommodate the needs of different stakeholders. Thus, the VRD is viewed as an evolving document that will be updated periodically to reflect the changing needs of identified CASL stakeholders and lessons learned during the progress of the CASL modeling and simulation program. (authors)

  1. VirtualToxLab A platform for estimating the toxic potential of drugs, chemicals and natural products

    SciTech Connect (OSTI)

    Vedani, Angelo; Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056 Basel ; Dobler, Max; Smieko, Martin

    2012-06-01

    The VirtualToxLab is an in silico technology for estimating the toxic potential (endocrine and metabolic disruption, some aspects of carcinogenicity and cardiotoxicity) of drugs, chemicals and natural products. The technology is based on an automated protocol that simulates and quantifies the binding of small molecules towards a series of proteins, known or suspected to trigger adverse effects. The toxic potential, a non-linear function ranging from 0.0 (none) to 1.0 (extreme), is derived from the individual binding affinities of a compound towards currently 16 target proteins: 10 nuclear receptors (androgen, estrogen ?, estrogen ?, glucocorticoid, liver X, mineralocorticoid, peroxisome proliferator-activated receptor ?, progesterone, thyroid ?, and thyroid ?), four members of the cytochrome P450 enzyme family (1A2, 2C9, 2D6, and 3A4), a cytosolic transcription factor (aryl hydrocarbon receptor) and a potassium ion channel (hERG). The interface to the technology allows building and uploading molecular structures, viewing and downloading results and, most importantly, rationalizing any prediction at the atomic level by interactively analyzing the binding mode of a compound with its target protein(s) in real-time 3D. The VirtualToxLab has been used to predict the toxic potential for over 2500 compounds: the results are posted on (http://www.virtualtoxlab.org). The free platform the OpenVirtualToxLab is accessible (in clientserver mode) over the Internet. It is free of charge for universities, governmental agencies, regulatory bodies and non-profit organizations. -- Highlights: ? In silico technology for estimating the toxic potential of drugs and chemicals. ? Simulation of binding towards 16 proteins suspected to trigger adverse effects. ? Mechanistic interpretation and real-time 3D visualization. ? Accessible over the Internet. ? Free of charge for universities, governmental agencies, regulatory bodies and NPOs.

  2. A Virtual Test Approach to Incorporate Materials and Manufacturing Processes to Aid Design choices in High Performance Composites

    SciTech Connect (OSTI)

    Gonzalez-Murillo, C.; Price, M.

    2011-05-04

    The increasing use of fibre reinforced composites in structural components in the aerospace industry is providing many challenges to designers in understanding how they can be used more effectively to exploit their advantages. One of the main challenges is the selection of lay-ups for a given application. The difficulty lies in the variability that is achievable with composites. Each new layup or configuration is effectively a new material and requires and extensive test programme to validate the performance, from coupons which give basic material characteristics, up through the test pyramid through to large sub-component which contains basic assemblies. This variety of testing gives confidence in understanding the material behaviour and performance in structural assemblies. On the other hand, the manufacturing process is also important here with different processes sometimes needed for different materials or thicknesses. This is a time consuming and expensive process requiring many thousands of small tests leading up to a few major tests which are complex to set up and carry out. This research is attempting to address this by developing a virtual test system which will sit hand-in-hand with a physical test system. The goal of virtual tests appears reachable using the finite element analysis technique in which many experimental tests can be replaced by high fidelity simulations. The payoff in reduced cycle time and costs for designing and certifying composite structures is very attractive; and the possibility also arises of considering material configurations that are too complex to certify by purely empirical methods. The validated simulations could then be subsequently used for variants or derivatives of composites to inform design choices and establish new validation programmes where appropriate. This paper presents a series of simulations of the critical testing procedures needed to validate high performance composites materials using linear and non-linear models and compares the results with physical test performed in carbon fibre specimens.

  3. Identification of putative estrogen receptor-mediated endocrine disrupting chemicals using QSAR- and structure-based virtual screening approaches

    SciTech Connect (OSTI)

    Zhang, Liying; Sedykh, Alexander; Tripathi, Ashutosh; Zhu, Hao; Afantitis, Antreas; Mouchlis, Varnavas D.; Melagraki, Georgia; Rusyn, Ivan; Tropsha, Alexander

    2013-10-01

    Identification of endocrine disrupting chemicals is one of the important goals of environmental chemical hazard screening. We report on the development of validated in silico predictors of chemicals likely to cause estrogen receptor (ER)-mediated endocrine disruption to facilitate their prioritization for future screening. A database of relative binding affinity of a large number of ER? and/or ER? ligands was assembled (546 for ER? and 137 for ER?). Both single-task learning (STL) and multi-task learning (MTL) continuous quantitative structureactivity relationship (QSAR) models were developed for predicting ligand binding affinity to ER? or ER?. High predictive accuracy was achieved for ER? binding affinity (MTL R{sup 2} = 0.71, STL R{sup 2} = 0.73). For ER? binding affinity, MTL models were significantly more predictive (R{sup 2} = 0.53, p < 0.05) than STL models. In addition, docking studies were performed on a set of ER agonists/antagonists (67 agonists and 39 antagonists for ER?, 48 agonists and 32 antagonists for ER?, supplemented by putative decoys/non-binders) using the following ER structures (in complexes with respective ligands) retrieved from the Protein Data Bank: ER? agonist (PDB ID: 1L2I), ER? antagonist (PDB ID: 3DT3), ER? agonist (PDB ID: 2NV7), and ER? antagonist (PDB ID: 1L2J). We found that all four ER conformations discriminated their corresponding ligands from presumed non-binders. Finally, both QSAR models and ER structures were employed in parallel to virtually screen several large libraries of environmental chemicals to derive a ligand- and structure-based prioritized list of putative estrogenic compounds to be used for in vitro and in vivo experimental validation. - Highlights: This is the largest curated dataset inclusive of ER? and ? (the latter is unique). New methodology that for the first time affords acceptable ER? models. A combination of QSAR and docking enables prediction of affinity and function. The results have potential applications to green chemistry. Models are publicly available for virtual screening via a web portal.

  4. http://www

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

    Instruments and the Probes to which they are attached CHAPS 07 G-1 Instruments rev. 07-2-20 Instrument CVI non-CVI Gases Other PI TSI-3563 Neph 1 Ogren/Andrews TSI-3010 CPC 1 Ogren/Andrews PSAP Radiance 0 Laulainen PSAP NOAA 1 Ogren/Andrews AMS 1 Lee/Alexander FIMS 1 Wang LAPA-1 1 Dubey TRAC 1 Laskin TDL H2O 1 Ogren/Andrews CVI control 1 Ogren/Andrews CVI flow meters ? Ogren/Andrews CVI pumps 2 Ogren/Andrews CVI heat 0 Ogren/Andrews CVI zero air bottle 1 Ogren/Andrews CVI data system 1

  5. Implementation and Evaluation of the Virtual Fields Method: Determining Constitutive Model Parameters From Full-Field Deformation Data.

    SciTech Connect (OSTI)

    Kramer, Sharlotte Lorraine Bolyard; Scherzinger, William M.

    2014-09-01

    The Virtual Fields Method (VFM) is an inverse method for constitutive model parameter identication that relies on full-eld experimental measurements of displacements. VFM is an alternative to standard approaches that require several experiments of simple geometries to calibrate a constitutive model. VFM is one of several techniques that use full-eld exper- imental data, including Finite Element Method Updating (FEMU) techniques, but VFM is computationally fast, not requiring iterative FEM analyses. This report describes the im- plementation and evaluation of VFM primarily for nite-deformation plasticity constitutive models. VFM was successfully implemented in MATLAB and evaluated using simulated FEM data that included representative experimental noise found in the Digital Image Cor- relation (DIC) optical technique that provides full-eld displacement measurements. VFM was able to identify constitutive model parameters for the BCJ plasticity model even in the presence of simulated DIC noise, demonstrating VFM as a viable alternative inverse method. Further research is required before VFM can be adopted as a standard method for constitu- tive model parameter identication, but this study is a foundation for ongoing research at Sandia for improving constitutive model calibration.

  6. MO-G-BRE-01: A Real-Time Virtual Delivery System for Photon Radiotherapy Delivery Monitoring

    SciTech Connect (OSTI)

    Shi, F; Gu, X; Jiang, S; Jia, X; Graves, Y

    2014-06-15

    Purpose: Treatment delivery monitoring is important for radiotherapy, which enables catching dosimetric error at the earliest possible opportunity. This project develops a virtual delivery system to monitor the dose delivery process of photon radiotherapy in real-time using GPU-based Monte Carlo (MC) method. Methods: The simulation process consists of 3 parallel CPU threads. A thread T1 is responsible for communication with a linac, which acquires a set of linac status parameters, e.g. gantry angles, MLC configurations, and beam MUs every 20 ms. Since linac vendors currently do not offer interface to acquire data in real time, we mimic this process by fetching information from a linac dynalog file at the set frequency. Instantaneous beam fluence map (FM) is calculated. A FM buffer is also created in T1 and the instantaneous FM is accumulated to it. This process continues, until a ready signal is received from thread T2 on which an inhouse developed MC dose engine executes on GPU. At that moment, the accumulated FM is transferred to T2 for dose calculations, and the FM buffer in T1 is cleared. Once the calculation finishes, the resulting 3D dose distribution is directed to thread T3, which displays it in three orthogonal planes overlaid on the CT image for treatment monitoring. This process continues to monitor the 3D dose distribution in real-time. Results: An IMRT and a VMAT cases used in our patient-specific QA are studied. Maximum dose differences between our system and treatment planning system are 0.98% and 1.58% for the two cases, respectively. The average time per MC calculation is 0.1sec with <2% relative uncertainty. The update frequency of ∼10Hz is considered as real time. Conclusion: By embedding a GPU-based MC code in a novel data/work flow, it is possible to achieve real-time MC dose calculations to monitor delivery process.

  7. SU-E-J-114: Towards Integrated CT and Ultrasound Guided Radiation Therapy Using A Robotic Arm with Virtual Springs

    SciTech Connect (OSTI)

    Ding, K; Zhang, Y; Sen, H; Lediju Bell, M; Goldstein, S; Kazanzides, P; Iordachita, I; Wong, J

    2014-06-01

    Purpose: Currently there is an urgent need in Radiation Therapy for noninvasive and nonionizing soft tissue target guidance such as localization before treatment and continuous monitoring during treatment. Ultrasound is a portable, low cost option that can be easily integrated with the LINAC room. We are developing a cooperatively controlled robot arm that has high intrafraction reproducibility with repositioning of the ultrasound probe. In this study, we introduce virtual springs (VS) to assist with interfraction probe repositioning and we compare the soft tissue deformation introduced by VS to the deformation that would exist without them. Methods: Three metal markers were surgically implanted in the kidney of one dog. The dog was anesthetized and immobilized supine in an alpha cradle. The reference ultrasound probe position and force to ideally visualize the kidney was defined by an experienced ultrasonographer using the Clarity ultrasound system and robot sensor. For each interfraction study, the dog was removed from the cradle and re-setup based on CBCT with bony anatomy alignment to mimic regular patient setup. The ultrasound probe was automatically returned to the reference position using the robot. To accommodate the soft tissue anatomy changes between each setup the operator used the VS feature to adjust the probe and obtain an ultrasound image that matched the reference image. CBCT images were acquired and each interfraction marker location was compared with the first interfraction Result. Results: Analysis of the marker positions revealed that the kidney was displaced by 18.8 6.4 mm without VS and 19.9 10.5 mm with VS. No statistically significant differences were found between two procedures. Conclusion: The VS feature is necessary to obtain matching ultrasound images, and they do not introduce further changes to the tissue deformation. Future work will focus on automatic VS based on ultrasound feedback. Supported in part by: NCI R01 CA161613; Elekta Sponsored Research.

  8. Risk Analysis Virtual ENvironment

    Energy Science and Technology Software Center (OSTI)

    2014-02-10

    RAVEN has 3 major functionalities: 1. Provides a Graphical User Interface for the pre- and post-processing of the RELAP-7 input and output. 2. Provides the capability to model nuclear power plants control logic for the RELAP-7 code and dynamic control of the accident scenario evolution. This capability is based on a software structure that realizes a direct connection between the RELAP-7 solver engine (MOOSE) and a python environment where the variables describing the plant statusmore » are accessible in a scripting environment. RAVEN support the generation of the probabilistic scenario control by supplying a wide range of probability and cumulative distribution functions and their inverse functions. 3. Provides a general environment to perform probability risk analysis for RELAP-7, RELAP-5 and any generic MOOSE based applications. The probabilistic analysis is performed by sampling the input space of the coupled code parameters and it is enhanced by using modern artificial intelligence algorithms that accelerate the identification of the areas of major risk (in the input parameter space). This environment also provides a graphical visualization capability to analyze the outcomes. Among other approaches, the classical Monte Carlo and Latin Hypercube sampling algorithms are available. For the acceleration of the convergence of the sampling methodologies, Support Vector Machines, Bayesian regression, and collocation stochastic polynomials chaos are implemented. The same methodologies here described could be used to solve optimization and uncertainties propagation problems using the RAVEN framework.« less

  9. Virtual Community Reception Center

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

  10. Virtual Tour of RHIC

    ScienceCinema (OSTI)

    Hope Lee

    2010-01-08

    INL environmental microbiologist Hope Lee is working to develop and apply tools that clean contaminants out of ground water.

  11. Understanding Virtual Blah Blahs?

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

    Electrical and Computer Engineering Salishan 2003 High-Speed Computing Conference Parallel Vector Access Backend Remapping controllers issue special vector ops *...

  12. ARM Virtual Tour

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

    ARM Overview To get climate data to continually improve earth system models, the Atmospheric Radiation Measurement-or ARM-Climate Research Facility operates observation sites around the world for the U.S. Department of Energy. All these data are freely available to anyone through the ARM Data Archive. North Slope of Alaska In 1997, the ARM Climate Research Facility established research sites on the North Slope of Alaska to provide data about cloud and radiative processes in cold environments and

  13. PNNL ARM Virtual Tour

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

    is disabled in your browser.

    Copy video URL Copy video URL at current time Copy embed code Report playback issue Copy debug info Stats for nerds About the HTML5 player...

  14. Virtual Tour | Jefferson Lab

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

    researchers from around the world who conduct research here. CEBAF Center also houses the Computer Center, where scientists can store and analyze data from experiments. They also...

  15. Study of Generalized Parton Distributions and Deeply Virtual Compton Scattering on the nucleon with the CLAS and CLAS12 detectors at the Jefferson Laboratory

    SciTech Connect (OSTI)

    Baptiste Guegan

    2012-11-01

    The exclusive leptoproduction of a real photon is considered to be the "cleanest" way to access the Generalized Parton Distribution (GPD). This process is called Deeply Virtual Compton Scattering (DVCS) lN {yields} lN{gamma} , and is sensitive to all the four GPDs. Measuring the DVCS cross section is one of the main goals of this thesis. In this thesis, we present the work performed to extract on a wide phase-space the DVCS cross-section from the JLab data at a beam energy of 6 GeV.

  16. Dual parametrization of the proton generalized parton distribution functions H and E, and description of the deeply virtual Compton scattering cross sections and asymmetries

    SciTech Connect (OSTI)

    Guzey, V.; Teckentrup, T. [Institut fuer Theoretische Physik II, Ruhr-Universitaet Bochum, D-44780 Bochum (Germany)

    2006-09-01

    We develop the minimal model of a new leading order parametrization of generalized parton distributions (GPDs) introduced by Polyakov and Shuvaev. The model for GPDs H and E is formulated in terms of the forward quark distributions, the Gegenbauer moments of the D-term, and the forward limit of the GPD E. The model is designed primarily for small and medium-size values of x{sub B}, x{sub B}{<=}0.2. We examine two different models of the t dependence of the GPDs: the factorized exponential model and the nonfactorized Regge-motivated model. Using our model, we successfully described the deeply virtual Compton scattering (DVCS) cross section measured by H1 and ZEUS, the moments of the beam-spin A{sub LU}{sup sin{phi}}, the beam-charge A{sub C}{sup cos{phi}}, and the transversely polarized target A{sub UT}{sup sin{phi}}{sup cos{phi}} DVCS asymmetries measured by HERMES and A{sub LU}{sup sin{phi}} measured by CLAS. The data on A{sub C}{sup cos{phi}} prefer the Regge-motivated model of the t dependence of the GPDs. The data on A{sub UT}{sup sin{phi}}{sup cos{phi}} indicate that the u and d quarks carry only a small fraction of the proton total angular momentum.

  17. E00-110 experiment at Jefferson Lab Hall A: Deeply virtual Compton scattering off the proton at 6 GeV

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Defurne, M.; Amaryan, M.; Aniol, K. A.; Beaumel, M.; Benaoum, H.; Bertin, P.; Brossard, M.; Camsonne, A.; Chen, J. -P.; Chudakov, E.; et al

    2015-11-03

    We present final results on the photon electroproduction (more » $$\\vec{e}p\\rightarrow ep\\gamma$$) cross section in the deeply virtual Compton scattering (DVCS) regime and the valence quark region from Jefferson Lab experiment E00-110. Results from an analysis of a subset of these data were published before, but the analysis has been improved which is described here at length, together with details on the experimental setup. Furthermore, additional data have been analyzed resulting in photon electroproduction cross sections at new kinematic settings, for a total of 588 experimental bins. Results of the $Q^2$- and $x_B$-dependences of both the helicity-dependent and helicity-independent cross sections are discussed. The $Q^2$-dependence illustrates the dominance of the twist-2 handbag amplitude in the kinematics of the experiment, as previously noted. Thanks to the excellent accuracy of this high luminosity experiment, it becomes clear that the unpolarized cross section shows a significant deviation from the Bethe-Heitler process in our kinematics, compatible with a large contribution from the leading twist-2 DVCS$^2$ term to the photon electroproduction cross section. The necessity to include higher-twist corrections in order to fully reproduce the shape of the data is also discussed. The DVCS cross sections in this study represent the final set of experimental results from E00-110, superseding the previous publication.« less

  18. BioenergizeME Virtual Toolkit

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

    ... students in designing their own. * POET-DSM: Project LIBERTY * Abengoa Biorefinery * ... IMAGE RESOURCES 10 DOEEE-1139 | published 92215 11 APPENDIX A GOAL: SOCIAL MEDIA ...

  19. Virtual Crosswalk Analysis Tool (VCAT)

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

    that are critical resources for other productsactivities Indicates common concepts, language and activities that bind organizations together Summary: VCAT is a knowledge modeling...

  20. An array of virtual Frisch-grid CdZnTe detectors and a front-end application-specific integrated circuit for large-area position-sensitive gamma-ray cameras

    SciTech Connect (OSTI)

    Bolotnikov, A. E.; Ackley, K.; Camarda, G. S.; Cherches, C.; Cui, Y.; De Geronimo, G.; Fried, J.; Hodges, D.; Hossain, A.; Lee, W.; Mahler, G.; Maritato, M.; Petryk, M.; Roy, U.; Salwen, C.; Vernon, E.; Yang, G.; James, R. B.

    2015-07-28

    We developed a robust and low-cost array of virtual Frisch-grid CdZnTe (CZT) detectors coupled to a front-end readout ASIC for spectroscopy and imaging of gamma rays. The array operates as a self-reliant detector module. It is comprised of 36 close-packed 6x6x15 mm3 detectors grouped into 3x3 sub-arrays of 2x2 detectors with the common cathodes. The front-end analog ASIC accommodates up to 36 anode and 9 cathode inputs. Several detector modules can be integrated into a single- or multi-layer unit operating as a Compton or a coded-aperture camera. We present the results from testing two fully assembled modules and readout electronics. The further enhancement of the arrays’ performance and reduction of their cost are made possible by using position-sensitive virtual Frisch-grid detectors, which allow for accurate corrections of the response of material non-uniformities caused by crystal defects.

  1. An array of virtual Frisch-grid CdZnTe detectors and a front-end application-specific integrated circuit for large-area position-sensitive gamma-ray cameras

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Bolotnikov, A. E.; Ackley, K.; Camarda, G. S.; Cherches, C.; Cui, Y.; De Geronimo, G.; Fried, J.; Hodges, D.; Hossain, A.; Lee, W.; et al

    2015-07-28

    We developed a robust and low-cost array of virtual Frisch-grid CdZnTe (CZT) detectors coupled to a front-end readout ASIC for spectroscopy and imaging of gamma rays. The array operates as a self-reliant detector module. It is comprised of 36 close-packed 6x6x15 mm3 detectors grouped into 3x3 sub-arrays of 2x2 detectors with the common cathodes. The front-end analog ASIC accommodates up to 36 anode and 9 cathode inputs. Several detector modules can be integrated into a single- or multi-layer unit operating as a Compton or a coded-aperture camera. We present the results from testing two fully assembled modules and readout electronics.more » The further enhancement of the arrays’ performance and reduction of their cost are made possible by using position-sensitive virtual Frisch-grid detectors, which allow for accurate corrections of the response of material non-uniformities caused by crystal defects.« less

  2. Real time infrared aerosol analyzer

    DOE Patents [OSTI]

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

    1990-01-01

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

  3. HEAVY ION FUSION SCIENCE VIRTUAL NATIONAL LABORATORY 1ST QUARTER 2010 MILESTONE REPORT: Simulations of fast correction of chromatic aberrations to establish physics specifications for implementation on NDCX-1 and NDCX-2

    SciTech Connect (OSTI)

    LIDIA, S.M.; LUND, S.M.; SEIDL, P.A.

    2010-01-04

    This milestone has been accomplished. The Heavy Ion Fusion Science Virtual National Laboratory has completed simulations of a fast correction scheme to compensate for chromatic and time-dependent defocusing effects in the transport of ion beams to the target plane in the NDCX-1 facility. Physics specifications for implementation in NDCX-1 and NDCX-2 have been established. This milestone has been accomplished. The Heavy Ion Fusion Science Virtual National Laboratory has completed simulations of a fast correction scheme to compensate for chromatic and time-dependent defocusing effects in the transport of ion beams to the target plane in the NDCX-1 facility. Physics specifications for implementation in NDCX-1 and NDCX-2 have been established. Focal spot differences at the target plane between the compressed and uncompressed regions of the beam pulse have been modeled and measured on NDCX-1. Time-dependent focusing and energy sweep from the induction bunching module are seen to increase the compressed pulse spot size at the target plane by factors of two or more, with corresponding scaled reduction in the peak intensity and fluence on target. A time-varying beam envelope correction lens has been suggested to remove the time-varying aberration. An Einzel (axisymmetric electric) lens system has been analyzed and optimized for general transport lines, and as a candidate correction element for NDCX-1. Attainable high-voltage holdoff and temporal variations of the lens driving waveform are seen to effect significant changes on the beam envelope angle over the duration of interest, thus confirming the utility of such an element on NDCX-1. Modeling of the beam dynamics in NDCX-1 was performed using a time-dependent (slice) envelope code and with the 3-D, self-consistent, particle-in-cell code WARP. Proof of concept was established with the slice envelope model such that the spread in beam waist positions relative to the target plane can be minimized with a carefully designed Einzel lens waveform and transport line. WARP simulations have verified the efficacy of the Einzel lens while including more detailed beam physics. WARP simulations have also indicated some unpredicted transittime effects, and methods are currently being explored to compensate and reduce this complication. We have explored the use of an Einzel lens, or system of Einzel lenses, to compensate for chromatic aberrations in the beam focal spot in the NDCX-2 target plane. The final beam manipulations in NDCX-2 (linear velocity ramp, charge neutralization, high field final focus solenoid) are similar to NDCX-1 though the NDCX-2 beam has much higher energy and current. The most relevant distinctions are that the pulse duration at the entrance to the drift compression section is tenfold shorter, and that the beam energy tenfold higher, than in NDCX-1. Placing a time-dependent, envelope angle correcting element at the neutralized drift region entrance presents a very significant challenge to voltage holdoff and voltage swing V(t) in a single Einzel lens. Placing the Einzel lens(es) further upstream reduces the required voltage risetime V'(t) to effect the necessary envelope correction, while increasing the duration over which the timedependent voltage must vary. While this simplifies the technological challenge of designing and operating a Einzel lens in NDCX-2, it does require much finer control of the correcting waveform and measurements of its effect on space-charge dominated beams over a much longer axial path length to target than in the NDCX-1.

  4. Towards III-V solar cells on Si: Improvement in the crystalline quality of Ge-on-Si virtual substrates through low porosity porous silicon buffer layer and annealing

    SciTech Connect (OSTI)

    Calabrese, Gabriele; Baricordi, Stefano; Bernardoni, Paolo; Fin, Samuele; Guidi, Vincenzo; Vincenzi, Donato

    2014-09-26

    A comparison between the crystalline quality of Ge grown on bulk Si and on a low porosity porous Si (pSi) buffer layer using low energy plasma enhanced chemical vapor deposition is reported. Omega/2Theta coupled scans around the Ge and Si (004) diffraction peaks show a reduction of the Ge full-width at half maximum (FWHM) of 22.4% in presence of the pSi buffer layer, indicating it is effective in improving the epilayer crystalline quality. At the same time atomic force microscopy analysis shows an increase in root means square roughness for Ge grown on pSi from 38.5 nm to 48.0 nm, as a consequence of the larger surface roughness of pSi compared to bulk Si. The effect of 20 minutes vacuum annealing at 580C is also investigated. The annealing leads to a FWHM reduction of 23% for Ge grown on Si and of 36.5% for Ge on pSi, resulting in a FWHM of 101 arcsec in the latter case. At the same time, the RMS roughness is reduced of 8.8% and of 46.5% for Ge grown on bulk Si and on pSi, respectively. The biggest improvement in the crystalline quality of Ge grown on pSi with respect to Ge grown on bulk Si observed after annealing is a consequence of the simultaneous reorganization of the Ge epilayer and the buffer layer driven by energy minimization. A low porosity buffer layer can thus be used for the growth of low defect density Ge on Si virtual substrates for the successive integration of III-V multijunction solar cells on Si. The suggested approach is simple and fast thus allowing for high throughput-, moreover is cost effective and fully compatible with subsequent wafer processing. Finally it does not introduce new chemicals in the solar cell fabrication process and can be scaled to large area silicon wafers.

  5. Virtual mask digital electron beam lithography

    DOE Patents [OSTI]

    Baylor, L.R.; Thomas, C.E.; Voelkl, E.; Moore, J.A.; Simpson, M.L.; Paulus, M.J.

    1999-04-06

    Systems and methods for direct-to-digital holography are described. An apparatus includes a laser; a beamsplitter optically coupled to the laser; a reference beam mirror optically coupled to the beamsplitter; an object optically coupled to the beamsplitter, a focusing lens optically coupled to both the reference beam mirror and the object; and a digital recorder optically coupled to the focusing lens. A reference beam is incident upon the reference beam mirror at a non-normal angle, and the reference beam and an object beam are focused by the focusing lens at a focal plane of the digital recorder to form an image. The systems and methods provide advantages in that computer assisted holographic measurements can be made. 5 figs.

  6. Virtual mask digital electron beam lithography

    DOE Patents [OSTI]

    Baylor, Larry R. (Farragut, TN); Thomas, Clarence E. (Knoxville, TN); Voelkl, Edgar (Oak Ridge, TN); Moore, James A. (Powell, TN); Simpson, Michael L. (Knoxville, TN); Paulus, Michael J. (Knoxville, TN)

    1999-01-01

    Systems and methods for direct-to-digital holography are described. An apparatus includes a laser; a beamsplitter optically coupled to the laser; a reference beam mirror optically coupled to the beamsplitter; an object optically coupled to the beamsplitter, a focusing lens optically coupled to both the reference beam mirror and the object; and a digital recorder optically coupled to the focusing lens. A reference beam is incident upon the reference beam mirror at a non-normal angle, and the reference beam and an object beam are focused by the focusing lens at a focal plane of the digital recorder to form an image. The systems and methods provide advantages in that computer assisted holographic measurements can be made.

  7. Virtual Tours | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure ...

  8. Virtual Environment for Reactor Applications (VERA

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

    Environment for Reactor Applications (VERA) Modern high performance computing (HPC) platforms bring an opportunity for modeling and simulation (modsim) at levels of detail...

  9. Virtual Tour | Princeton Plasma Physics Lab

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

    Science Ed NSTX Health Physics 1 2 3 4 5 6 7 Locations 1 Lyman Spitzer Building 2 Theory Wing 3 The L-wing 4 The Tunnel 5 Science Ed 6 NSTX 7 Health Physics Lyman Spitzer Building ...

  10. Virtual Desktop Infrastructure (VDI) and Citrix Workplace

    Broader source: Energy.gov [DOE]

    For questions or concerns related to VDI or Workplace, contact the EITS Service Desk at 301-903-2500.

  11. Intelligence Community Student Opportunities (Virtual Information Session)

    Broader source: Energy.gov [DOE]

    Attendees: Students interested in intelligence internship opportunities Participating Office: Office of Intelligence and Counter-Intelligence POC: Kevin Kremer (IN) Supports: Student Employment Program

  12. Caterpillar, Argonne undertake cooperative virtual engine design...

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

    project By Jared Sagoff * June 30, 2014 Tweet EmailPrint ARGONNE, Ill - Internal combustion engines are poised for dramatic breakthroughs in improving efficiency with lower...

  13. A SULI Virtual Tour | The Ames Laboratory

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

    error occurred. Try watching this video on www.youtube.com, or enable JavaScript if it is disabled in your browser. Ames Laboratory researcher and SULI mentor Ikenna Nlebedim and...

  14. Virtual Private Network (VPN) | Argonne National Laboratory

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

    Instructions for using a Cryptocard Download the VPN Client VPN client downloads (login required) Instructions AnyConnect Client For laptop or desktop For mobile devices IpSec ...

  15. Virtual Hydropower Prospector | Open Energy Information

    Open Energy Info (EERE)

    Website Website: hydropower.inl.govprospectorindex.shtml Country: United States Cost: Free Northern America Coordinates: 37.09024, -95.712891 Show Map Loading map......

  16. Residential heating oil prices virtually unchanged

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

    0, 2014 Residential heating oil price decreases The average retail price for home heating oil fell 1.9 cents from a week ago to 4.23 per gallon. That's up 5.1 cents from a year...

  17. Residential heating oil prices virtually unchanged

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

    5, 2014 Residential heating oil price decreases The average retail price for home heating oil fell 1.6 cents from a week ago to 4.23 per gallon. That's up 14.9 cents from a year...

  18. Residential heating oil prices virtually unchanged

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

    4 Residential heating oil price decreases The average retail price for home heating oil fell 3.1 cents from a week ago to 4.20 per gallon. That's up 13.6 cents from a year ago,...

  19. Residential heating oil prices virtually unchanged

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

    9, 2014 Residential heating oil price decreases The average retail price for home heating oil fell 7.2 cents from a week ago to 4.12 per gallon. That's up 9.4 cents from a year...

  20. Heavy Ion Fusion Science Virtual National Laboratory1st Quarter FY08 Milestone Report: Report Initial Work on Developing Plasma Modeling Capability in WARP for NDCX ExperimentsReport Initial work on developing Plasma Modeling Capability in WARP for NDCX Experiments

    SciTech Connect (OSTI)

    Friedman, A.; Cohen, R.H.; Grote, D.P.; Vay, J.-L.

    2007-12-10

    This milestone has been accomplished. The Heavy Ion Fusion Science Virtual National Laboratory (HIFS-VNL) has developed and implemented an initial beam-in-plasma implicit modeling capability in Warp; has carried out tests validating the behavior of the models employed; has compared the results of electrostatic and electromagnetic models when applied to beam expansion in an NDCX-I relevant regime; has compared Warp and LSP results on a problem relevant to NDCX-I; has modeled wave excitation by a rigid beam propagating through plasma; and has implemented and begun testing a more advanced implicit method that correctly captures electron drift motion even when timesteps too large to resolve the electron gyro-period are employed. The HIFS-VNL is well on its way toward having a state-of-the-art source-to-target simulation capability that will enable more effective support of ongoing experiments in the NDCX series and allow more confident planning for future ones.

  1. Explosive plane-wave lens

    DOE Patents [OSTI]

    Marsh, Stanley P. (Los Alamos, NM)

    1988-01-01

    An explosive plane-wave air lens which enables a spherical wave form to be converted to a planar wave without the need to specially machine or shape explosive materials is described. A disc-shaped impactor having a greater thickness at its center than around its periphery is used to convert the spherical wave into a plane wave. When the wave reaches the impactor, the center of the impactor moves first because the spherical wave reaches the center of the impactor first. The wave strikes the impactor later in time as one moves radially along the impactor. Because the impactor is thinner as one moves radially outward, the velocity of the impactor is greater at the periphery than at the center. An acceptor explosive is positioned so that the impactor strikes the acceptor simultaneously. Consequently, a plane detonation wave is propagated through the acceptor explosive.

  2. Explosive plane-wave lens

    DOE Patents [OSTI]

    Marsh, S.P.

    1988-03-08

    An explosive plane-wave air lens which enables a spherical wave form to be converted to a planar wave without the need to specially machine or shape explosive materials is described. A disc-shaped impactor having a greater thickness at its center than around its periphery is used to convert the spherical wave into a plane wave. When the wave reaches the impactor, the center of the impactor moves first because the spherical wave reaches the center of the impactor first. The wave strikes the impactor later in time as one moves radially along the impactor. Because the impactor is thinner as one moves radially outward, the velocity of the impactor is greater at the periphery than at the center. An acceptor explosive is positioned so that the impactor strikes the acceptor simultaneously. Consequently, a plane detonation wave is propagated through the acceptor explosive. 4 figs.

  3. Explosive plane-wave lens

    DOE Patents [OSTI]

    Marsh, S.P.

    1987-03-12

    An explosive plane-wave air lens which enables a spherical wave form to be converted to a planar wave without the need to specially machine or shape explosive materials is described. A disc-shaped impactor having a greater thickness at its center than around its periphery is used to convert the spherical wave into a plane wave. When the wave reaches the impactor, the center of the impactor moves first because the spherical wave reaches the center of the impactor first. The wave strikes the impactor later in time as one moves radially along the impactor. Because the impactor is thinner as one moves radially outward, the velocity of the impactor is greater at the periphery than at the center. An acceptor explosive is positioned so that the impactor strikes the acceptor simultaneously. Consequently, a plane detonation wave is propagated through the acceptor explosive. 3 figs., 3 tabs.

  4. Importance of aerosol composition, mixing state, and morphology for heterogeneous ice nucleation: A combined field and laboratory approach

    SciTech Connect (OSTI)

    Baustian, Kelly J.; Cziczo, Daniel J.; Wise, M. A.; Pratt, Kerri; Kulkarni, Gourihar R.; Hallar, Anna G.; Tolbert, Margaret A.

    2012-03-30

    In this study chemical compositions of background aerosol and ice nuclei were examined through laboratory investigations using Raman spectroscopy and field measurements by single-particle mass spectrometry. Aerosol sampling took place at Storm Peak Laboratory in Steamboat Springs, Colorado (elevation of 3210 m). A cascade impactor was used to collect coarse-mode aerosol particles for laboratory analysis by Raman spectroscopy; the composition, mixing state, and heterogeneous ice nucleation activity of individual particles were examined. For in situ analysis of fine-mode aerosol, ice nucleation on ambient particles was observed using a compact ice nucleation chamber. Ice crystals were separated from unactivated aerosol using a pumped counterflow virtual impactor, and ice nuclei were analyzed using particle analysis by laser mass spectrometry. For both fine and coarse modes, the ice nucleating particle fractions were enriched in minerals and depleted in sulfates and nitrates, compared to the background aerosol sampled. The vast majority of particles in both the ambient and ice active aerosol fractions contained a detectable amount of organic material. Raman spectroscopy showed that organic material is sometimes present in the form of a coating on the surface of inorganic particles. We find that some organic-containing particles serve as efficient ice nuclei while others do not. For coarse-mode aerosol, organic particles were only observed to initiate ice formation when oxygen signatures were also present in their spectra.

  5. Apparatus having reduced background for measuring radiation activity in aerosol particles

    DOE Patents [OSTI]

    Rodgers, John C. (Santa Fe, NM); McFarland, Andrew R. (College Station, TX); Oritz, Carlos A. (Bryan, TX); Marlow, William H. (College Station, TX)

    1992-01-01

    Apparatus having reduced background for measuring radiation activity in aerosol particles. A continuous air monitoring sampler is described for use in detecting the presence of alpha-emitting aerosol particles. An inlet fractionating screen has been demonstrated to remove about 95% of freshly formed radon progeny from the aerosol sample, and approximately 33% of partially aged progeny. Addition of an electrical condenser and a modified dichotomous virtual impactor are expected to produce considerable improvement in these numbers, the goal being to enrich the transuranic (TRU) fraction of the aerosols. This offers the possibility of improving the signal-to-noise ratio for the detected alpha-particle energy spectrum in the region of interest for detecting TRU materials associated with aerosols, thereby enhancing the performance of background-compensation algorithms for improving the quality of alarm signals intended to warn personnel of potentially harmful quantities of TRU materials in the ambient air.

  6. Characterization of suspended flue gas particle systems with...

    Office of Scientific and Technical Information (OSTI)

    IMPACTORS; PERFORMANCE TESTING; FLUE GAS; PARTICLE SIZE; FLUIDIZED-BED COMBUSTION; AIR FILTERS; DISTRIBUTION; MEASURING INSTRUMENTS; SORTING; CHEMICAL REACTIONS; COMBUSTION;...

  7. A COMPUTATIONAL WORKBENCH ENVIRONMENT FOR VIRTUAL POWER PLANT SIMULATION

    SciTech Connect (OSTI)

    Mike Bockelie; Dave Swensen; Martin Denison; Connie Senior; Adel Sarofim; Bene Risio

    2002-07-28

    This is the seventh Quarterly Technical Report for DOE Cooperative Agreement No.: DE-FC26-00NT41047. The goal of the project is to develop and demonstrate a computational workbench for simulating the performance of Vision 21 Power Plant Systems. Within the last quarter, good progress has been made on the development of the IGCC workbench. A series of parametric CFD simulations for single stage and two stage generic gasifier configurations have been performed. An advanced flowing slag model has been implemented into the CFD based gasifier model. A literature review has been performed on published gasification kinetics. Reactor models have been developed and implemented into the workbench for the majority of the heat exchangers, gas clean up system and power generation system for the Vision 21 reference configuration. Modifications to the software infrastructure of the workbench have been commenced to allow interfacing to the workbench reactor models that utilize the CAPE{_}Open software interface protocol.

  8. REACTOR ANALYSIS AND VIRTUAL CONTROL ENVIRONMENT (RAVEN) FY12 REPORT

    SciTech Connect (OSTI)

    Cristian Rabiti; Andrea Alfonsi; Joshua Cogliati; Diego Mandelli; Robert Kinoshita

    2012-09-01

    RAVEN is a complex software tool that will have tasks spanning from being the RELAP-7 user interface, to using RELAP-7 to perform Risk Informed Safety Characterization (RISMC), and to controlling RELAP-7 calculation execution. The goal of this document is to: 1. Highlight the functional requirements of the different tasks of RAVEN 2. Identify shared functions that could be aggregate in modules so to obtain a minimal software redundancy and maximize software utilization. RAVEN is in fact a software framework that will allow exploiting the following functionalities: Derive and actuate the control logic required to: o Simulate the plant control system o Simulate the operator (procedure guided) actions o Perform Monte Carlo sampling of random distributed events o Perform event three based analysis Provide a GUI to: o Input a plant description to RELAP-7 (component, control variable, control parameters) o Concurrent monitoring of Control Parameters o Concurrent alteration of control parameters Provide Post Processing data mining capability based on o Dimensionality reduction o Cardinality reduction In this document it will be shown how an appropriate mathematical formulation of the control logic and probabilistic analysis leads to have most of the software infrastructure leveraged between the two main tasks. Further, this document will go through the development accomplished this year, including simulation results, and priorities for the next years development

  9. SMART Wind Consortium Support Structures Subgroup Virtual Meeting...

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

    Design November 18, 2015 2:30PM to 4:00PM EST Funded by the U.S. Department of Commerce, the SMART Wind Consortium is connecting collaborators to form consensus on near-term...

  10. Virtual Aluminum Castings An Industrial Application of Integrated...

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

    and cost challenges. Nowhere is this more evident than in the development of designs and manufacturing processes for cast aluminum engine blocks and cylinder heads. Increasing...

  11. How ORISE is Making a Difference: Virtual Community Reception...

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

    video. Following a mass casualty radiation emergency, public health professionals will play a crucial role in assessing radiation exposures, screening for radioactive...

  12. Interactive display system having a scaled virtual target zone

    DOE Patents [OSTI]

    Veligdan, James T.; DeSanto, Leonard

    2006-06-13

    A display system includes a waveguide optical panel having an inlet face and an opposite outlet face. A projector and imaging device cooperate with the panel for projecting a video image thereon. An optical detector bridges at least a portion of the waveguides for detecting a location on the outlet face within a target zone of an inbound light spot. A controller is operatively coupled to the imaging device and detector for displaying a cursor on the outlet face corresponding with the detected location of the spot within the target zone.

  13. Virtual Center of Excellence for Hydrogen Storage- Chemical Hydrides

    Broader source: Energy.gov [DOE]

    Presentation from the Hydrogen Storage Pre-Solicitation Meeting held June 19, 2003 in Washington, DC.

  14. OLADE Virtual Energy Training Program (CAPEV) | Open Energy Informatio...

    Open Energy Info (EERE)

    Background analysis Resource Type: Video, Presentation, Webinar, Training materials, Lessons learnedbest practices Website: www.olade.org.ecencategoryproductscapev...

  15. BEAM SIMULATIONS USING VIRTUAL DIAGNOSTICS FOR THE DRIVER LINAC

    SciTech Connect (OSTI)

    R. C. York; X. Wu; Q. Zhao

    2011-12-21

    End-to-end beam simulations for the driver linac have shown that the design meets the necessary performance requirements including having adequate transverse and longitudinal acceptances. However, to achieve reliable operational performance, the development of appropriate beam diagnostic systems and control room procedures are crucial. With limited R&D funding, beam simulations provide a cost effective tool to evaluate candidate beam diagnostic systems and to provide a critical basis for developing early commissioning and later operational activities. We propose to perform beam dynamic studies and engineering analyses to define the requisite diagnostic systems of the driver linac and through simulation to develop and test commissioning and operational procedures.

  16. PNNL offers 'virtual tour' of Shallow Underground Laboratory...

    National Nuclear Security Administration (NNSA)

    For the first time, some of the world's most sensitive radiation detection systems and fundamental physics research can be seen from your desktop computer or mobile device. PNNL ...

  17. Virtual Office Community and Computing (VOCC) Laboratory The

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

    infrastructure has proven to be more reliable and less expensive than traditional legacy communications systems. The VOCC Edge telepresence units and 3D visualization systems...

  18. BioenergizeME Virtual Science Fair: History of Biomass

    Broader source: Energy.gov [DOE]

    This infographic was created by students from Sun Valley High School in Aston, PA, as part of the U.S. Department of Energy-BioenergizeME Infographic Challenge. The BioenergizeME Infographic...

  19. Proposed Virtual Center for Excellence for Metal Hydride Development

    Broader source: Energy.gov [DOE]

    Presentation from the Hydrogen Storage Pre-Solicitation Meeting held June 19, 2003 in Washington, DC.

  20. Virtual Reading Room after to 2000 | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    Administration after to 2000 | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Countering Nuclear Terrorism About Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Library Bios Congressional Testimony Fact Sheets Newsletters Press Releases Photo Gallery Jobs Apply for Our Jobs Our Jobs

  1. Virtual Reading Room prior to 2000 | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    Administration prior to 2000 | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Countering Nuclear Terrorism About Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Library Bios Congressional Testimony Fact Sheets Newsletters Press Releases Photo Gallery Jobs Apply for Our Jobs Our Jobs

  2. Virtual photon fragmentation functions (Journal Article) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    OSTI Identifier: 40277406 DOE Contract Number: FG02-87ER40731 Resource Type: Journal Article Resource Relation: Journal Name: Physical Review D; Journal Volume: 64; Journal Issue: ...

  3. Energy Department Launches Virtual Hackathon to Build the Next...

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

    them to a vast array of software tools, capabilities, data sets, and application program interfaces (APIs) developed by the Energy Department and its national laboratories. ...

  4. Impact assisted segmented cutterhead

    DOE Patents [OSTI]

    Morrell, Roger J. (Bloomington, MN); Larson, David A. (Minneapolis, MN); Ruzzi, Peter L. (Eagan, MN)

    1992-01-01

    An impact assisted segmented cutterhead device is provided for cutting various surfaces from coal to granite. The device comprises a plurality of cutting bit segments deployed in side by side relationship to form a continuous cutting face and a plurality of impactors individually associated with respective cutting bit segments. An impactor rod of each impactor connects that impactor to the corresponding cutting bit segment. A plurality of shock mounts dampening the vibration from the associated impactor. Mounting brackets are used in mounting the cutterhead to a base machine.

  5. Slide 1

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

    clear: plan unchanged if cloudy repeat low altitude legs a 2 nd time (AMS on CVI + Isokinetic sampling) If ATC does *not* allow low altitude legs then repeat high altitude legs a...

  6. Investigation of forced and isothermal chemical vapor infiltrated SiC/SiC ceramic matrix composites. Final report

    SciTech Connect (OSTI)

    Sankar, J.; Kelkar, A.D.; Vaidyanathan, R.

    1993-09-01

    Mechanical properties of two different layups for each of the forced CVI (41 specimens) and isothermal CVI (36 specimens) materials were investigated in air at room temperature (RT), 1000C, and at room temperature after thermal shock (RT/TS) and exposure to oxidation (RT/OX). The FCVI specimens had a nominal interfacial coating thickness of 0.3 {mu}m of pyrolytic carbon, while CVI specimens had a coating thickness of 0.1 {mu}m. Effect of reinforcement and interfacial bond on mechanical properties of composite were investigated. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were employed to analyze the fiber-matrix interface and the toughening mechanisms in this ceramic composite system.

  7. Porous nuclear fuel element for high-temperature gas-cooled nuclear reactors

    DOE Patents [OSTI]

    Youchison, Dennis L.; Williams, Brian E.; Benander, Robert E.

    2011-03-01

    Porous nuclear fuel elements for use in advanced high temperature gas-cooled nuclear reactors (HTGR's), and to processes for fabricating them. Advanced uranium bi-carbide, uranium tri-carbide and uranium carbonitride nuclear fuels can be used. These fuels have high melting temperatures, high thermal conductivity, and high resistance to erosion by hot hydrogen gas. Tri-carbide fuels, such as (U,Zr,Nb)C, can be fabricated using chemical vapor infiltration (CVI) to simultaneously deposit each of the three separate carbides, e.g., UC, ZrC, and NbC in a single CVI step. By using CVI, the nuclear fuel may be deposited inside of a highly porous skeletal structure made of, for example, reticulated vitreous carbon foam.

  8. Porous nuclear fuel element with internal skeleton for high-temperature gas-cooled nuclear reactors

    DOE Patents [OSTI]

    Youchison, Dennis L.; Williams, Brian E.; Benander, Robert E.

    2013-09-03

    Porous nuclear fuel elements for use in advanced high temperature gas-cooled nuclear reactors (HTGR's), and to processes for fabricating them. Advanced uranium bi-carbide, uranium tri-carbide and uranium carbonitride nuclear fuels can be used. These fuels have high melting temperatures, high thermal conductivity, and high resistance to erosion by hot hydrogen gas. Tri-carbide fuels, such as (U,Zr,Nb)C, can be fabricated using chemical vapor infiltration (CVI) to simultaneously deposit each of the three separate carbides, e.g., UC, ZrC, and NbC in a single CVI step. By using CVI, the nuclear fuel may be deposited inside of a highly porous skeletal structure made of, for example, reticulated vitreous carbon foam.

  9. Methods for manufacturing porous nuclear fuel elements for high-temperature gas-cooled nuclear reactors

    DOE Patents [OSTI]

    Youchison, Dennis L.; Williams, Brian E.; Benander, Robert E.

    2010-02-23

    Methods for manufacturing porous nuclear fuel elements for use in advanced high temperature gas-cooled nuclear reactors (HTGR's). Advanced uranium bi-carbide, uranium tri-carbide and uranium carbonitride nuclear fuels can be used. These fuels have high melting temperatures, high thermal conductivity, and high resistance to erosion by hot hydrogen gas. Tri-carbide fuels, such as (U,Zr,Nb)C, can be fabricated using chemical vapor infiltration (CVI) to simultaneously deposit each of the three separate carbides, e.g., UC, ZrC, and NbC in a single CVI step. By using CVI, a thin coating of nuclear fuel may be deposited inside of a highly porous skeletal structure made, for example, of reticulated vitreous carbon foam.

  10. Methods for making a porous nuclear fuel element

    DOE Patents [OSTI]

    Youchison, Dennis L; Williams, Brian E; Benander, Robert E

    2014-12-30

    Porous nuclear fuel elements for use in advanced high temperature gas-cooled nuclear reactors (HTGR's), and to processes for fabricating them. Advanced uranium bi-carbide, uranium tri-carbide and uranium carbonitride nuclear fuels can be used. These fuels have high melting temperatures, high thermal conductivity, and high resistance to erosion by hot hydrogen gas. Tri-carbide fuels, such as (U,Zr,Nb)C, can be fabricated using chemical vapor infiltration (CVI) to simultaneously deposit each of the three separate carbides, e.g., UC, ZrC, and NbC in a single CVI step. By using CVI, the nuclear fuel may be deposited inside of a highly porous skeletal structure made of, for example, reticulated vitreous carbon foam.

  11. Array of virtual Frisch-grid CZT detectors with common cathode...

    Office of Scientific and Technical Information (OSTI)

    We optimized the geometry of the device and improved its spectral response. We found that ... CATHODES; ELECTRODES; ELECTRON LOSS; GEOMETRY; OPTICS; PERFORMANCE; SHIELDING; ...

  12. Buildings of the Future Research Project Launch and Virtual Panel Discussion on Building Technology Trends

    Broader source: Energy.gov [DOE]

    Learn more about the DOE's Buildings of the Future Project. Buildings will no longer be passive objects that consume resources, but rather active participants engaged in the energy system and our community.

  13. Energy Department Launches Virtual Hackathon to Build the Next Big Solar

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

    Software Solutions | Department of Energy Last week, the Energy Department's SunShot Initiative launched the largest-of-its-kind, 60-day online hackathon to quickly build prototype solutions and products that address barriers to greater solar energy deployment and drive down the costs of solar energy. Approximately 700,000 coders, developers, and data scientists are expected to participate in this series of contests to build promising software prototypes to help more American families and

  14. Array of virtual Frisch-grid CZT detectors with common cathode...

    Office of Scientific and Technical Information (OSTI)

    the device's performance. At the same time, this allowed corrections for electron loss by reading the cathode signals to obtain depth information. Authors: Bolotnikov, A.E. ;...

  15. Systems and methods for interactive virtual reality process control and simulation

    DOE Patents [OSTI]

    Daniel, Jr., William E. (North Augusta, SC); Whitney, Michael A. (Augusta, GA)

    2001-01-01

    A system for visualizing, controlling and managing information includes a data analysis unit for interpreting and classifying raw data using analytical techniques. A data flow coordination unit routes data from its source to other components within the system. A data preparation unit handles the graphical preparation of the data and a data rendering unit presents the data in a three-dimensional interactive environment where the user can observe, interact with, and interpret the data. A user can view the information on various levels, from a high overall process level view, to a view illustrating linkage between variables, to view the hard data itself, or to view results of an analysis of the data. The system allows a user to monitor a physical process in real-time and further allows the user to manage and control the information in a manner not previously possible.

  16. Festival Re-Cap: Energy Bikes, Levitated Trains and 3D Virtual Rides

    Broader source: Energy.gov [DOE]

    Office of Science Director Dr. William Brinkman recaps the USA Science and Engineering Festival that took place on the National Mall this pass weekend.

  17. Google+ Virtual Field Trip on Vehicle Electrification at Argonne National Laboratory

    Broader source: Energy.gov [DOE]

    Don't miss this exclusive peek into the U.S. Department of Energy's Argonne National Laboratory. Attendees will meet three researchers who will explain a different phase of vehicle electrification research. This field trip is very similar to the tou

  18. Share My Lesson Virtual Conference- Find ways to teach about energy!

    Broader source: Energy.gov [DOE]

    Looking for ways to teach about energy?  Join our webinar, where we will share engaging activities and educational tools from the Department of Energy!

  19. SMART Wind Consortium Composites Subgroup Virtual Meeting: Advanced Manufacturing of Wind Turbine Blades

    Broader source: Energy.gov [DOE]

    Funded by the U.S. Department of Commerce, the SMART Wind Consortium is connecting collaborators to form consensus on near-term and mid-term plans needed to increase cost competitiveness of U.S....

  20. Texas A&M Virtual Employment Information Session for the Bush School

    Broader source: Energy.gov [DOE]

    Attendees: Graduate students majoring in Public Service and Administration and International Affairs

  1. SMART Wind Consortium Support Structures Subgroup Virtual Meeting: Tower and Foundation Design

    Broader source: Energy.gov [DOE]

    Funded by the U.S. Department of Commerce, the SMART Wind Consortium is connecting collaborators to form consensus on near-term and mid-term plans needed to increase cost competitiveness of U.S....

  2. DOE Announces Webinars on Geothermal FORGE Initiative, National Energy Literacy Virtual Town Hall, and More

    Broader source: Energy.gov [DOE]

    EERE offers webinars to the public on a range of subjects, from adopting the latest energy efficiency and renewable energy technologies, to training for the clean energy workforce. Webinars are free; however, advanced registration is typically required. You can also watch archived webinars and browse previously aired videos, slides, and transcripts.

  3. DOE Launches World-Class Virtual Energy Simulation Training and Research Center

    Broader source: Energy.gov [DOE]

    A new training center developed to teach personnel how to operate clean integrated gasification combined cycle power plants is now up and running with help from the U.S. Department of Energy.

  4. Lawrence Livermore National Laboratory Proposal to Participate in the Carbon and Metal Hydride Virtual Centers

    Broader source: Energy.gov [DOE]

    Presentation from the Hydrogen Storage Pre-Solicitation Meeting held June 19, 2003 in Washington, DC.

  5. Single and double polarization asymmetries from deeply virtual exclusive pi^0 electroproduction

    SciTech Connect (OSTI)

    Kim, Andrey; Avakian, Harut A.; Burkert, Volker D.

    2014-10-01

    The target and double spin asymmetry measurements of exclusive p0 electroproduction were performed for the first time in DIS region at Jefferson Lab using the CEBAF Large Acceptance Spectrometer (CLAS) and longitudinally polarized proton target. The wide kinematic coverage and good resolution of CLAS allowed measurements in full azimuthal range providing an opportunity to extract single and double spin asymmetries proportional to polarized structure functions. Their angular dependencies in hadronic center-of-mass system were analyzed, and extracted moments are compared to recent theoretical handbag-based calculations based on chiral-even and chiral-odd GPDs contributions. The interpretation of present results within the framework of the modified perturbative approach and their use as a constraint for models of the t behavior will be discussed.

  6. Students Share Experiences from First Run of BioenergizeME Virtual...

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

    Winners were as follows: First place for highest number of likes, shares, and page views-Aston, Pennsylvania's Sun Valley High School, Science and Technology: Sustainable ...

  7. VIRTUAL HYDROPOWER PROSPECTING: A FOUNDATION FOR WATER ENERGY RESOURCE PLANNING AND DEVELOPMENT

    SciTech Connect (OSTI)

    Randy Lee; Sera White; Julie Brizzee; Shane Cherry; Douglas Hall

    2008-06-01

    A comprehensive assessment of the gross power potential of the natural stream water energy resources of the United States was performed using state-of-the-art digital elevation models (DEMs) and geographic information system (GIS) tools. Water energy resource sites (stream segments) assessed in the basic resource assessment were further evaluated to identify which can be developed using a set of feasibility criteria. The gross power potential of each site was refined to determine its developable hydropower potential using a set of development criteria corresponding to a damless low power (less than 1 MWa) or small hydro (between 1 and 30 MWa) project. The methodologies for performing the basic resource assessment and subsequent feasibility assessment are described and the summary results for the nation are presented.

  8. A texture-based framework for improving CFD data visualization in a virtual environment

    SciTech Connect (OSTI)

    Gerrick O'Ron Bivins

    2005-05-05

    In the field of computational fluid dynamics (CFD) accurate representations of fluid phenomena can be simulated hut require large amounts of data to represent the flow domain. Most datasets generated from a CFD simulation can be coarse, {approx}10,000 nodes or cells, or very fine with node counts on the order of 1,000,000. A typical dataset solution can also contain multiple solutions for each node, pertaining to various properties of the flow at a particular node. Scalar properties such as density, temperature, pressure, and velocity magnitude are properties that are typically calculated and stored in a dataset solution. Solutions are not limited to just scalar properties. Vector quantities, such as velocity, are also often calculated and stored for a CFD simulation. Accessing all of this data efficiently during runtime is a key problem for visualization in an interactive application. Understanding simulation solutions requires a post-processing tool to convert the data into something more meaningful. Ideally, the application would present an interactive visual representation of the numerical data for any dataset that was simulated while maintaining the accuracy of the calculated solution. Most CFD applications currently sacrifice interactivity for accuracy, yielding highly detailed flow descriptions hut limiting interaction for investigating the field.

  9. Board Focuses on Budget in First Virtual Semi-Annual Meeting

    Broader source: Energy.gov [DOE]

    WASHINGTON, D.C. – The EM Site-Specific Advisory Board (EMSSAB) Chairs held their semi-annual meeting via webinar recently, a move to curtail costs in a challenging fiscal climate.

  10. Slide 1

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

    19:08 19:10 19:12 100 80 60 40 20 0 b sp , Mm -1 1.5 1.0 0.5 0.0 LWC, gm m -3 Org < 60 Sulfate Nitrate Cl bspgreen LWCGerber CVI IsoK Preliminary Observations from the June 15...

  11. Pulsed Power Technology at Sandia National Laboratories

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

    M.D. Furnish, "Exploring pulse shaping for Z using graded-density impactors on Gas Guns," October 2005. J. Davis, "User Manual for INVICE 0.1-beta: A computer Code for Inverse...

  12. ARM - Campaign Instrument - csi

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

    govInstrumentscsi Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Cloud Spectrometer and Impactor (CSI)...

  13. Virtual Institute of Microbial Stress and Survival: Deduction of Stress Response Pathways in Metal and Radionuclide Reducing Microorganisms

    SciTech Connect (OSTI)

    2004-04-17

    The projects application goals are to: (1) To understand bacterial stress-response to the unique stressors in metal/radionuclide contamination sites; (2) To turn this understanding into a quantitative, data-driven model for exploring policies for natural and biostimulatory bioremediation; (3) To implement proposed policies in the field and compare results to model predictions; and (4) Close the experimental/computation cycle by using discrepancies between models and predictions to drive new measurements and construction of new models. The projects science goals are to: (1) Compare physiological and molecular response of three target microorganisms to environmental perturbation; (2) Deduce the underlying regulatory pathways that control these responses through analysis of phenotype, functional genomic, and molecular interaction data; (3) Use differences in the cellular responses among the target organisms to understand niche specific adaptations of the stress and metal reduction pathways; (4) From this analysis derive an understanding of the mechanisms of pathway evolution in the environment; and (5) Ultimately, derive dynamical models for the control of these pathways to predict how natural stimulation can optimize growth and metal reduction efficiency at field sites.

  14. Single and double spin asymmetries for deeply virtual Compton scattering measured with CLAS and a longitudinally polarized proton target

    SciTech Connect (OSTI)

    Pisano, S.; Biselli, A.; Niccolai, S.; Seder, E.; Guidal, M.; Mirazita, M.; Adhikari, K. P.; Adikaram, D.; Amaryan, M. J.; Anderson, M. D.; Anefalos Pereira, S.; Avakian, H.; Ball, J.; Battaglieri, M.; Batourine, V.; Bedlinskiy, I.; Bosted, P.; Briscoe, B.; Brock, J.; Brooks, W. K.; Burkert, V. D.; Carlin, C.; Carman, D. S.; Celentano, A.; Chandavar, S.; Charles, G.; Colaneri, L.; Cole, P. L.; Compton, N.; Contalbrigo, M.; Cortes, O.; Crabb, D. G.; Crede, V.; D' Angelo, A.; De Vita, R.; De Sanctis, E.; Deur, A.; Djalali, C.; Dupre, R.; Egiyan, H.; El Alaoui, A.; El Fassi, L.; Elouadrhiri, L.; Eugenio, P.; Fedotov, G.; Fegan, S.; Fersch, R.; Filippi, A.; Fleming, J. A.; Fradi, A.; Garillon, B.; Garcon, M.; Ghandilyan, Y.; Gilfoyle, G. P.; Giovanetti, K. L.; Girod, F. X.; Goetz, J. T.; Gohn, W.; Golovatch, E.; Gothe, R. W.; Griffioen, K. A.; Guo, L.; Hafidi, K.; Hanretty, C.; Hattawy, M.; Hicks, K.; Holtrop, M.; Hughes, S. M.; Ilieva, Y.; Ireland, D. G.; Ishkhanov, B. S.; Jenkins, D.; Jiang, X.; Jo, H. S.; Joo, K.; Joosten, S.; Keith, C. D.; Keller, D.; Kim, A.; Kim, W.; Klein, F. J.; Kubarovsky, V.; Kuhn, S. E.; Lenisa, P.; Livingston, K.; Lu, H. Y.; MacCormick, M.; MacGregor, Ian J. D.; Mayer, M.; McKinnon, B.; Meekins, D. G.; Meyer, C. A.; Mokeev, V.; Montgomery, R. A.; Moody, C. I.; Munoz Camacho, C.; Nadel-Turonski, P.; Osipenko, M.; Ostrovidov, A. I.; Park, K.; Phelps, W.; Phillips, J. J.; Pogorelko, O.; Price, J. W.; Procureur, S.; Prok, Y.; Puckett, A. J. R.; Ripani, M.; Rizzo, A.; Rosner, G.; Rossi, P.; Roy, P.; Sabatie, F.; Salgado, C.; Schott, D.; Schumacher, R. A.; Skorodumina, I.; Smith, G. D.; Sober, D. I.; Sokhan, D.; Sparveris, N.; Stepanyan, S.; Stoler, P.; Strauch, S.; Sytnik, V.; Tian, Ye; Tkachenko, S.; Turisini, M.; Ungaro, M.; Voutier, E.; Walford, N. K.; Watts, D. P.; Wei, X.; Weinstein, L. B.; Wood, M. H.; Zachariou, N.; Zana, L.; Zhang, J.; Zhao, Z. W.; Zonta, I.

    2015-03-19

    Single-beam, single-target, and double-spin asymmetries for hard exclusive photon production on the proton e? p? ?e'p'? are presented. The data were taken at Jefferson Lab using the CLAS detector and a longitudinally polarized 14NH3 target. The three asymmetries were measured in 165 4-dimensional kinematic bins, covering the widest kinematic range ever explored simultaneously for beam and target-polarization observables in the valence quark region. The kinematic dependences of the obtained asymmetries are discussed and compared to the predictions of models of Generalized Parton Distributions. As a result, the measurement of three DVCS spin observables at the same kinematic points allows a quasi-model-independent extraction of the imaginary parts of the H and H~ Compton Form Factors, which give insight into the electric and axial charge distributions of valence quarks in the proton.

  15. LANL Virtual Center for Chemical Hydrogen Storage: Chemical Hydrogen Storage Using Ultra-high Surface Area Main Group Materials

    SciTech Connect (OSTI)

    Susan M. Kauzlarich; Phillip P. Power; Doinita Neiner; Alex Pickering; Eric Rivard; Bobby Ellis, T. M.; Atkins, A. Merrill; R. Wolf; Julia Wang

    2010-09-05

    The focus of the project was to design and synthesize light element compounds and nanomaterials that will reversibly store molecular hydrogen for hydrogen storage materials. The primary targets investigated during the last year were amine and hydrogen terminated silicon (Si) nanoparticles, Si alloyed with lighter elements (carbon (C) and boron (B)) and boron nanoparticles. The large surface area of nanoparticles should facilitate a favorable weight to volume ratio, while the low molecular weight elements such as B, nitrogen (N), and Si exist in a variety of inexpensive and readily available precursors. Furthermore, small NPs of Si are nontoxic and non-corrosive. Insights gained from these studies will be applied toward the design and synthesis of hydrogen storage materials that meet the DOE 2010 hydrogen storage targets: cost, hydrogen capacity and reversibility. Two primary routes were explored for the production of nanoparticles smaller than 10 nm in diameter. The first was the reduction of the elemental halides to achieve nanomaterials with chloride surface termination that could subsequently be replaced with amine or hydrogen. The second was the reaction of alkali metal Si or Si alloys with ammonium halides to produce hydrogen capped nanomaterials. These materials were characterized via X-ray powder diffraction, TEM, FTIR, TG/DSC, and NMR spectroscopy.

  16. Method for measuring the size distribution of airborne rhinovirus

    SciTech Connect (OSTI)

    Russell, M.L.; Goth-Goldstein, R.; Apte, M.G.; Fisk, W.J.

    2002-01-01

    About 50% of viral-induced respiratory illnesses are caused by the human rhinovirus (HRV). Measurements of the concentrations and sizes of bioaerosols are critical for research on building characteristics, aerosol transport, and mitigation measures. We developed a quantitative reverse transcription-coupled polymerase chain reaction (RT-PCR) assay for HRV and verified that this assay detects HRV in nasal lavage samples. A quantitation standard was used to determine a detection limit of 5 fg of HRV RNA with a linear range over 1000-fold. To measure the size distribution of HRV aerosols, volunteers with a head cold spent two hours in a ventilated research chamber. Airborne particles from the chamber were collected using an Andersen Six-Stage Cascade Impactor. Each stage of the impactor was analyzed by quantitative RT-PCR for HRV. For the first two volunteers with confirmed HRV infection, but with mild symptoms, we were unable to detect HRV on any stage of the impactor.

  17. Aerosol sampling system

    DOE Patents [OSTI]

    Masquelier, Donald A.

    2004-02-10

    A system for sampling air and collecting particulate of a predetermined particle size range. A low pass section has an opening of a preselected size for gathering the air but excluding particles larger than the sample particles. An impactor section is connected to the low pass section and separates the air flow into a bypass air flow that does not contain the sample particles and a product air flow that does contain the sample particles. A wetted-wall cyclone collector, connected to the impactor section, receives the product air flow and traps the sample particles in a liquid.

  18. A VIRTUAL SKY WITH EXTRAGALACTIC H I AND CO LINES FOR THE SQUARE KILOMETRE ARRAY AND THE ATACAMA LARGE MILLIMETER/SUBMILLIMETER ARRAY

    SciTech Connect (OSTI)

    Obreschkow, D.; Kloeckner, H.-R.; Heywood, I.; Rawlings, S.; Levrier, F.

    2009-10-01

    We present a sky simulation of the atomic H I-emission line and the first 10 {sup 12}C{sup 16}O rotational emission lines of molecular gas in galaxies beyond the Milky Way. The simulated sky field has a comoving diameter of 500 h {sup -1} Mpc; hence, the actual field of view depends on the (user-defined) maximal redshift z {sub max}; e.g., for z {sub max} = 10, the field of view yields approx4 x 4 deg{sup 2}. For all galaxies, we estimate the line fluxes, line profiles, and angular sizes of the H I and CO-emission lines. The galaxy sample is complete for galaxies with cold hydrogen masses above 10{sup 8} M {sub sun}. This sky simulation builds on a semi-analytic model of the cosmic evolution of galaxies in a LAMBDA cold dark matter (LAMBDACDM) cosmology. The evolving CDM distribution was adopted from the Millennium Simulation, an N-body CDM simulation in a cubic box with a side length of 500 h {sup -1} Mpc. This side length limits the coherence scale of our sky simulation: it is long enough to allow the extraction of the baryon acoustic oscillations in the galaxy power spectrum, yet the position and amplitude of the first acoustic peak will be imperfectly defined. This sky simulation is a tangible aid to the design and operation of future telescopes, such as the Square Kilometre Array, Large Millimeter Telescope, and Atacama Large Millimeter/Submillimeter Array. The results presented in this paper have been restricted to a graphical representation of the simulated sky and fundamental dN/dz analyses for peak flux density limited and total flux limited surveys of H I and CO. A key prediction is that H I will be harder to detect at redshifts z approx> 2 than predicted by a no-evolution model. The future verification or falsification of this prediction will allow us to qualify the semi-analytic models.

  19. HIGH PRESSURE COAL COMBUSTION KINETICS PROJECT

    SciTech Connect (OSTI)

    Stefano Orsino

    2003-07-25

    NEA completed the CFD simulations for all NBFZ tests. SRI resumed work on HPBO experiments and conducted preliminary tests using the UCONN impactor. UCONN prepared several samples of char for cross-sectional analysis by SEM and characterization is underway. BU completed the NBFZ char characterization program. CBK model had been implemented into Fluent.

  20. Uranium mill ore dust characterization

    SciTech Connect (OSTI)

    Knuth, R.H.; George, A.C.

    1980-11-01

    Cascade impactor and general air ore dust measurements were taken in a uranium processing mill in order to characterize the airborne activity, the degree of equilibrium, the particle size distribution and the respirable fraction for the /sup 238/U chain nuclides. The sampling locations were selected to limit the possibility of cross contamination by airborne dusts originating in different process areas of the mill. The reliability of the modified impactor and measurement techniques was ascertained by duplicate sampling. The results reveal no significant deviation from secular equilibrium in both airborne and bulk ore samples for the /sup 234/U and /sup 230/Th nuclides. In total airborne dust measurements, the /sup 226/Ra and /sup 210/Pb nuclides were found to be depleted by 20 and 25%, respectively. Bulk ore samples showed depletions of 10% for the /sup 226/Ra and /sup 210/Pb nuclides. Impactor samples show disequilibrium of /sup 226/Ra as high as +-50% for different size fractions. In these samples the /sup 226/Ra ratio was generally found to increase as particle size decreased. Activity median aerodynamic diameters of the airborne dusts ranged from 5 to 30 ..mu..m with a median diameter of 11 ..mu..m. The maximum respirable fraction for the ore dusts, based on the proposed International Commission on Radiological Protection's (ICRP) definition of pulmonary deposition, was < 15% of the total airborne concentration. Ore dust parameters calculated for impactor duplicate samples were found to be in excellent agreement.

  1. CHAPS: status of issues and action items

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

    4, 2007 CHAPS: status of issues and action items. Items to watch are shown in bold. 1. Our most recent 'off-line' conference call was on March 30, with Yin-Nan, Liz, John J. Betsy, and John H. Details of AMS plumbing were discussed. 2. Status of CVI: a. It has been installed and test flown, 3/14 & 3/16. b. We are working on an instability in one of the flow meters (feedback with the zero-air regulator?) c. Will be flown again with nephs and psaps, and again with AMS d. See full status of

  2. Research Projects | The Ames Laboratory

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

    Research Projects Analysis of Gas Turbine Thermal Performances Development of Virtual Power Plants High Density Sensor Network Development Virtual Advanced Power Training...

  3. Browse by Discipline -- E-print Network Subject Pathways: Materials...

    Office of Scientific and Technical Information (OSTI)

    ... of Computer Science and Engineering, Virtual Reality, Visualization and Imaging ... and Computer Engineering, Parallel Virtual File System (PVFS) Project Colorado State ...

  4. N OV I N T

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

    ... feel a needle push through virtual tissue, or feel a drill passing through virtual bone. ... tion, CADCAM, computer animation, engineering design and analysis, architectural ...

  5. Sandia Energy Highlights - HPC

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

    Upcoming Release of the University of Minnesota's Virtual Wind Simulator http:energy.sandia.govupcoming-release-of-the-university-of-minnesotas-virtual-wind-simulator http:...

  6. EERE Program Management Guide - Appendix I

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

    Management Virtual University December 2007 http:www1.eere.energy.govbaprogmgmtguide.html I-5 EERE Program Management Guide Appendix I- Program Management Virtual University ...

  7. OSTI, US Dept of Energy, Office of Scientific and Technical Information |

    Office of Scientific and Technical Information (OSTI)

    Speeding access to science information from DOE and Beyond DOE Virtual University

  8. Metallic species derived from fluidized bed coal combustion. [59 references

    SciTech Connect (OSTI)

    Natusch, D.F.S.; Taylor, D.R.

    1980-01-01

    Samples of fly ash generated by the combustion of Montana Rosebud coal in an experimental 18 inch fluidized bed combustor were collected. The use of a heated cascade impactor permitted collection of size fractionated material that avoided condensation of volatile gases on the particles. Elemental concentration trends were determined as a function of size and temperature and the results compared to published reports for conventional power plants. The behavior of trace metals appears to be substantially different in the two systems due to lower operating temperatures and the addition of limestone to the fluidized bed. Corrosion of the impactor plates was observed at the highest temperature and lowest limestone feed rate sampled during the study. Data from the elemental concentration and leaching studies suggest that corrosion is most likely due to reactions involving sodium sulfate. However, it is concluded that corrosion is less of a potential problem in fluidized-bed systems than in conventional coal-fired systems.

  9. ARM - Publications: Science Team Meeting Documents

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

    Comparison of Laboratory Ice Cloud and Cirrus Crystal Size Spectra Obtained with the FSSP and Cloudscope Arnott, W.P., Schmitt, C.G., Lowenthal, D.H., Desert Research Institute; Poellot, M.R., University of North Dakota Ninth Atmospheric Radiation Measurement (ARM) Science Team Meeting Laboratory cloud chamber measurements of ice cloud particle size spectra have been performed using three methods: a Forward Scattering Spectrometer Probe (FSSP), a video impactor or cloudscope, and inversion of

  10. In-Situ Microphysics from the MPACE IOP

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

    McFarquhar, Greg

    2008-01-15

    Best estimates of the size distributions of supercooled water droplets and ice crystals for mixed-phase clouds measured during M-PACE for spiral ascents/descents over Barrow and Oliktok Point, and for ramped ascents/descents between Barrow and Oliktok Point. Our best estimates of the bulk microphysical properties such as ice water content (IWC), liquid water content (LWC), effective radius of ice crystals defined following Fu (1996) (rei), effective radius of supercooled water droplets (rew), total ice crystal number concentration (Ni), total water droplet number concentration (Nw) and total condensed water content (CWC), are also provided. The quantities were derived from the FSSP, 1DC, 2DC, HVPS and the CVI. Note HVPS data are only available after 10 Oct 2004 and some procedures have been developed to account for the missing data.

  11. THE KFIB EXPERIMENT

    SciTech Connect (OSTI)

    Youngblood, Gerald E.; Senor, David J.; Jones, Russell H.; Kowbel, W.; Kohyama, A.

    2000-06-30

    Several rod-shaped specimens with uniaxially packed fibers (Hi-Nicalon™, Hi-Nicalon™ Type S, Tyranno™ SA and Amoco K1100™ types) in a pre-ceramic polymer matrix were fabricated. By using appropriate analytic models, the bare fiber thermal conductivity (Kf) will be determined as a function of temperature up to 1000°C before and after irradiation for samples cut from these rods. Preliminary thermal conductivity data for unirradiated fibers (Hi-Nicalon™ and Tyranno™ SA-B SiC and K1100™ graphite) and for three types of unirradiated composites made from these fibers (2D-Nicalon S/SiC multilayer/CVI-SiC, 3D-Nicalon S/PIP-SiC, and 2D-8HS Tyrannohex™ HP) are presented.

  12. CFCC working group meeting: Proceedings

    SciTech Connect (OSTI)

    1997-12-31

    This report is a compilation of the vugraphs presented at this meeting. Presentations covered are: CFCC Working Group; Overview of study on applications for advanced ceramics in industries for the future; Design codes and data bases: The CFCC program and its involvement in ASTM, ISO, ASME, and military handbook 17 activities; CFCC Working Group meeting (McDermott Technology); CFCC Working Group meeting (Textron); CFCC program for DMO materials; Developments in PIP-derived CFCCs; Toughened Silcomp (SiC-Si) composites for gas turbine engine applications; CFCC program for CVI materials; Self-lubricating CFCCs for diesel engine applications; Overview of the CFCC program`s supporting technologies task; Life prediction methodologies for CFCC components; Environmental testing of CFCCs in combustion gas environments; High-temperature particle filtration ORNL/DCC CRADA; HSCT CMC combustor; and Case study -- CFCC shroud for industrial gas turbines.

  13. In-Situ Microphysics from the MPACE IOP

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

    McFarquhar, Greg

    Best estimates of the size distributions of supercooled water droplets and ice crystals for mixed-phase clouds measured during M-PACE for spiral ascents/descents over Barrow and Oliktok Point, and for ramped ascents/descents between Barrow and Oliktok Point. Our best estimates of the bulk microphysical properties such as ice water content (IWC), liquid water content (LWC), effective radius of ice crystals defined following Fu (1996) (rei), effective radius of supercooled water droplets (rew), total ice crystal number concentration (Ni), total water droplet number concentration (Nw) and total condensed water content (CWC), are also provided. The quantities were derived from the FSSP, 1DC, 2DC, HVPS and the CVI. Note HVPS data are only available after 10 Oct 2004 and some procedures have been developed to account for the missing data.

  14. Laser device

    DOE Patents [OSTI]

    Scott, Jill R. (Idaho Falls, ID); Tremblay, Paul L. (Idaho Falls, ID)

    2008-08-19

    A laser device includes a virtual source configured to aim laser energy that originates from a true source. The virtual source has a vertical rotational axis during vertical motion of the virtual source and the vertical axis passes through an exit point from which the laser energy emanates independent of virtual source position. The emanating laser energy is collinear with an orientation line. The laser device includes a virtual source manipulation mechanism that positions the virtual source. The manipulation mechanism has a center of lateral pivot approximately coincident with a lateral index and a center of vertical pivot approximately coincident with a vertical index. The vertical index and lateral index intersect at an index origin. The virtual source and manipulation mechanism auto align the orientation line through the index origin during virtual source motion.

  15. VE-Suite

    Energy Science and Technology Software Center (OSTI)

    2006-10-01

    an open source virtual engineering software toolkit that simplifies information management so users can simultaneously interact with engineering analyses and graphical models to create a virtual decision-making environment.

  16. Ames Lab 101: osgBullet

    ScienceCinema (OSTI)

    McCorkle, Doug

    2012-08-29

    Ames Laboratory scientist Doug McCorkle explains osgBullet, a 3-D virtual simulation software, and how it helps engineers design complex products and systems in a realistic, real-time virtual environment.

  17. NETL Researcher Honored with 2013 Federal Laboratory Consortium...

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

    for Excellence in Technology Transfer for his work on the 3D Virtual Energy Plant Simulator and Immersive Training System. The 3D Virtual Energy Plant Simulator and Immersive...

  18. CONSORTIUM FOR ADVANCED SIMULATION OF LIGHT WATER REACTORS (CASL...

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

    Problem Integration Virtual Reactor Integration (VRI) Bridging the gap between research and engineering. Chemistry Mesh Motion Quality Improvement Multi- resolution...

  19. ORISE: Health Communication and Technical Training Fact Sheet

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

    * Simulations and animations * Virtual environment learning systems * Instructional game design and development * Distance learning development * Section 508 and SCORM...

  20. Final Report: Enabling Exascale Hardware and Software Design through

    Office of Scientific and Technical Information (OSTI)

    Scalable System Virtualization (Technical Report) | SciTech Connect Technical Report: Final Report: Enabling Exascale Hardware and Software Design through Scalable System Virtualization Citation Details In-Document Search Title: Final Report: Enabling Exascale Hardware and Software Design through Scalable System Virtualization In this grant, we enhanced the Palacios virtual machine monitor to increase its scalability and suitability for addressing exascale system software design issues. This

  1. ARM - SGP Central Facility

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

    Central Facility SGP Related Links Virtual Tour Facilities and Instruments Central Facility Boundary Facility Extended Facility Intermediate Facility Radiometric Calibration...

  2. Browse by Discipline -- E-print Network Subject Pathways: Materials...

    Office of Scientific and Technical Information (OSTI)

    ... and Computer Engineering, Bradley University Ahn, Junghyun (Junghyun Ahn) - Virtual Reality Lab., Facult Informatique et Communications, Ecole Polytechnique Fdrale ...

  3. NETL Researcher Honored with 2013 Federal Laboratory Consortium Award

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

    Eric Liese of the National Energy Technology Laboratory (NETL) has been awarded a Mid-Atlantic region Federal Laboratory Consortium (FLC) award for Excellence in Technology Transfer for his work on the 3D Virtual Energy Plant Simulator and Immersive Training System. The 3D Virtual Energy Plant Simulator and Immersive Training System (ITS) deployed at NETL's Advanced Virtual Energy Simulation Training and Research (AVESTAR ® ) Center delivers the first virtual energy plant for training,

  4. NETL Researcher Honored with 2013 Federal Laboratory Consortium Award

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

    Dr. Priyadarshi Mahapatra of the National Energy Technology Laboratory (NETL) has been awarded a Mid-Atlantic region Federal Laboratory Consortium (FLC) award for Excellence in Technology Transfer for his work on the 3D Virtual Energy Plant Simulator and Immersive Training System. The 3D Virtual Energy Plant Simulator and Immersive Training System (ITS) deployed at NETL's Advanced Virtual Energy Simulation Training and Research (AVESTAR ® ) Center delivers the first virtual energy plant for

  5. NETL Researcher Honored with 2013 Federal Laboratory Consortium Award

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

    Terry Jordan of the National Energy Technology Laboratory (NETL) has been awarded a Mid-Atlantic region Federal Laboratory Consortium (FLC) award for Excellence in Technology Transfer for his work on the 3D Virtual Energy Plant Simulator and Immersive Training System. The 3D Virtual Energy Plant Simulator and Immersive Training System (ITS) deployed at NETL's Advanced Virtual Energy Simulation Training and Research (AVESTAR ® ) Center delivers the first virtual energy plant for training,

  6. American Recovery & Reinvestment Act Newsletter - Issue 18

    Office of Environmental Management (EM)

    from Hanford Tanks ... page 13 Physical Centers Virtual Centers This map shows the locations of EM's Con- tractor Transition Service...

  7. Inquiring Minds - Questions About Physics

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

    What are the virtual particles? You Wrote: What are the virtual particles? What does it mean - "virtual"? Sincerely, Anthony Petrov. Hi, you ask another very good question. "Virtual particles" are real -- they exist in that they can be detected and can interact. But they are fleeting -- they are soon gone with no trace of their existence. This phenomenon is related to the Heisenberg uncertainty principle of quantum physics. Uncertainty in time multiplied by uncertainty in

  8. University-Industry-National Laboratory Partnership to Improve Building

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

    Efficiency by Equipment Health Monitoring with Virtual Intelligent Sensing | Department of Energy University-Industry-National Laboratory Partnership to Improve Building Efficiency by Equipment Health Monitoring with Virtual Intelligent Sensing University-Industry-National Laboratory Partnership to Improve Building Efficiency by Equipment Health Monitoring with Virtual Intelligent Sensing Lead Performer: Oak Ridge National Laboratory - Oak Ridge, TN Partners: -- University of Tennessee -

  9. T-552: Cisco Nexus 1000V VEM updates address denial of service in VMware ESX/ESXi

    Broader source: Energy.gov [DOE]

    The Cisco Nexus 1000V Virtual Ethernet Module (VEM) is a virtual switch for ESX and ESXi. This switch can be added to ESX and ESXi where it replaces the VMware virtual switch and runs as part of the ESX and ESXi kernel. A flaw in the handling of dropped packets by Cisco Nexus 1000V VEM can cause ESX and ESXi to crash.

  10. Inertial impaction air sampling device

    DOE Patents [OSTI]

    Dewhurst, K.H.

    1990-05-22

    An inertial impactor is designed which is to be used in an air sampling device for collection of respirable size particles in ambient air. The device may include a graphite furnace as the impaction substrate in a small-size, portable, direct analysis structure that gives immediate results and is totally self-contained allowing for remote and/or personal sampling. The graphite furnace collects suspended particles transported through the housing by means of the air flow system, and these particles may be analyzed for elements, quantitatively and qualitatively, by atomic absorption spectrophotometry. 3 figs.

  11. Isentropic compressive wave generator impact pillow and method of making same

    DOE Patents [OSTI]

    Barker, Lynn M. (Albuquerque, NM)

    1985-01-01

    An isentropic compressive wave generator and method of making same. The w generator comprises a disk or flat "pillow" member having component materials of different shock impedances formed in a configuration resulting in a smooth shock impedance gradient over the thickness thereof for interpositioning between an impactor member and a target specimen for producing a shock wave of a smooth predictable rise time. The method of making the pillow member comprises the reduction of the component materials to a powder form and forming the pillow member by sedimentation and compressive techniques.

  12. Inertial impaction air sampling device

    DOE Patents [OSTI]

    Dewhurst, K.H.

    1987-12-10

    An inertial impactor to be used in an air sampling device for collection of respirable size particles in ambient air which may include a graphite furnace as the impaction substrate in a small-size, portable, direct analysis structure that gives immediate results and is totally self-contained allowing for remote and/or personal sampling. The graphite furnace collects suspended particles transported through the housing by means of the air flow system, and these particles may be analyzed for elements, quantitatively and qualitatively, by atomic absorption spectrophotometry. 3 figs.

  13. Inertial impaction air sampling device

    DOE Patents [OSTI]

    Dewhurst, Katharine H. (13150 Wenonah SE. Apt. 727, Albuquerque, NM 87123)

    1990-01-01

    An inertial impactor to be used in an air sampling device for collection of respirable size particles in ambient air which may include a graphite furnace as the impaction substrate in a small-size, portable, direct analysis structure that gives immediate results and is totally self-contained allowing for remote and/or personal sampling. The graphite furnace collects suspended particles transported through the housing by means of the air flow system, and these particles may be analyzed for elements, quantitatively and qualitatively, by atomic absorption spectrophotometry.

  14. ARM - Publications: Science Team Meeting Documents

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

    Cirrus Cloud Particle Mass and Terminal Velocity Derived from Airborne 2D-C Probe and Counterflow Virtural Impactor Data for Selected Cases During the Spring 2000 Cloud IOP Benson-Troth, S.(a), Mace, G.G.(a), Twohy, C.(b), and Poellot, M.(c), University of Utah (a), Oregon State University (b), University of North Dakota (c) Thirteenth Atmospheric Radiation Measurement (ARM) Science Team Meeting When cirrus cloud particles are sampled by an airborne 2D-C probe, the shadows of the particles on

  15. Asteroid diversion considerations and comparisons of diversion techniques

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Owen, J. Michael; Miller, Paul; Rovny, Jared; Wasem, Joe; Howley, Kirsten; Herbold, Eric B.

    2015-05-19

    The threat of asteroid impacts on Earth poses a low-probability but high consequence risk, with possible outcomes ranging from regional to global catastrophe. However, unique amongst such global threats we have the capability of averting such disasters. Diversion approaches by either kinetic impactor or nuclear energy deposition are the two most practical technologies for mitigating hazardous near Earth asteroids. One of the greatest challenges in understanding our options is the uncertain response of asteroids to such impulsive techniques, due both to our lack of knowledge of the composition and structure of these objects as well as their highly varied nature.more » Predicting whether we will simply divert or break up a given object is a crucial: the weak self-gravity and inferred weak structure of typical asteroids present the strong possibility the body will fragment for modest impulses. Predictive modeling of failure and fragmentation is one important tool for such studies. In this paper we apply advances in modeling failure and fracture using Adaptive Smoothed Particle Hydrodynamics (ASPH) to understand mega-cratering on asteroids as a validation exercise, and show examples of diverting the near Earth asteroid Bennu using both a kinetic impactor and ablative blow-off due to nuclear energy deposition.« less

  16. Asteroid diversion considerations and comparisons of diversion techniques

    SciTech Connect (OSTI)

    Owen, J. Michael; Miller, Paul; Rovny, Jared; Wasem, Joe; Howley, Kirsten; Herbold, Eric B.

    2015-05-19

    The threat of asteroid impacts on Earth poses a low-probability but high consequence risk, with possible outcomes ranging from regional to global catastrophe. However, unique amongst such global threats we have the capability of averting such disasters. Diversion approaches by either kinetic impactor or nuclear energy deposition are the two most practical technologies for mitigating hazardous near Earth asteroids. One of the greatest challenges in understanding our options is the uncertain response of asteroids to such impulsive techniques, due both to our lack of knowledge of the composition and structure of these objects as well as their highly varied nature. Predicting whether we will simply divert or break up a given object is a crucial: the weak self-gravity and inferred weak structure of typical asteroids present the strong possibility the body will fragment for modest impulses. Predictive modeling of failure and fragmentation is one important tool for such studies. In this paper we apply advances in modeling failure and fracture using Adaptive Smoothed Particle Hydrodynamics (ASPH) to understand mega-cratering on asteroids as a validation exercise, and show examples of diverting the near Earth asteroid Bennu using both a kinetic impactor and ablative blow-off due to nuclear energy deposition.

  17. Neoadjuvant Chemoradiation for Distal Rectal Cancer: 5-Year Updated Results of a Randomized Phase 2 Study of Neoadjuvant Combined Modality Chemoradiation for Distal Rectal Cancer

    SciTech Connect (OSTI)

    Mohiuddin, Mohammed, E-mail: asemuddin@gmail.com [King Faisal Specialist Hospital and Research Centre, Riyadh (Saudi Arabia)] [King Faisal Specialist Hospital and Research Centre, Riyadh (Saudi Arabia); Paulus, Rebecca [RTOG Statistical Department, Philadelphia, Pennsylvania (United States)] [RTOG Statistical Department, Philadelphia, Pennsylvania (United States); Mitchell, Edith [Thomas Jefferson University, Philadelphia, Pennsylvania (United States)] [Thomas Jefferson University, Philadelphia, Pennsylvania (United States); Hanna, Nader [Department of Surgical Oncology, University of Maryland Medical Center, Baltimore, Maryland (United States)] [Department of Surgical Oncology, University of Maryland Medical Center, Baltimore, Maryland (United States); Yuen, Albert [Reading Hospital and Medical Center, Reading, Pennsylvania (United States)] [Reading Hospital and Medical Center, Reading, Pennsylvania (United States); Nichols, Romaine [University of Florida Proton Therapy Institute, Jacksonville, Florida (United States)] [University of Florida Proton Therapy Institute, Jacksonville, Florida (United States); Yalavarthi, Salochna [Ingalls Memorial Hospital, Harvey, Illinois (United States)] [Ingalls Memorial Hospital, Harvey, Illinois (United States); Hayostek, Cherie [Santa Fe Cancer Center, Santa Fe, New Mexico (United States)] [Santa Fe Cancer Center, Santa Fe, New Mexico (United States); Willett, Christopher [Duke University Medical Center, Durham, North Carolina (United States)] [Duke University Medical Center, Durham, North Carolina (United States)

    2013-07-01

    Purpose: To assess the efficacy of 2 different approaches to neoadjuvant chemoradiation for distal rectal cancers. Methods and Materials: One hundred six patients with T3/T4 distal rectal cancers were randomized in a phase 2 study. Patients received either continuous venous infusion (CVI) of 5-Fluorouracil (5-FU), 225 mg/m{sup 2} per day, 7 days per week plus pelvic hyperfractionated radiation (HRT), 45.6 Gy at 1.2 Gy twice daily plus a boost of 9.6 to 14.4 Gy for T3 or T4 cancers (Arm 1), or CVI of 5-FU, 225 mg/m{sup 2} per day, Monday to Friday, plus irinotecan, 50 mg/m{sup 2} once weekly 4, plus pelvic radiation therapy (RT), 45 Gy at 1.8 Gy per day and a boost of 5.4 Gy for T3 and 9 Gy for T4 cancers (Arm 2). Surgery was performed 4 to 10 weeks later. Results: All eligible patients (n=103) are included in this analysis; 2 ineligible patients were excluded, and 1 patient withdrew consent. Ninety-eight of 103 patients (95%) underwent resection. Four patients did not undergo surgery for either disease progression or patient refusal, and 1 patient died during induction chemotherapy. The median time of follow-up was 6.4 years in Arm 1 and 7.0 years in Arm 2. The pathological complete response (pCR) rates were 30% in Arm 1 and 26% in Arm 2. Locoregional recurrence rates were 16% in Arm 1 and 17% in Arm 2. Five-year survival rates were 61% and 75% and Disease-specific survival rates were 78% and 85% for Arm1 and Arm 2, respectively. Five second primaries occurred in patients on Arm 1, and 1 second primary occurred in Arm 2. Conclusions: High rates of disease-specific survival were seen in each arm. Overall survival appears affected by the development of unrelated second cancers. The high pCR rates with 5-FU and higher dose radiation in T4 cancers provide opportunity for increased R0 resections and improved survival.

  18. ARM - Facility News Article

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

    7, 2015 [Facility News] New Virtual Tour Takes ARM Users to the "Top of the World" Bookmark and Share Featured in the virtual tour, the Great White Instrument Platform houses the most instruments of any installation at ARM's NSA site, including five radiometers, two radars, two lidars, a total sky imager, and an infrared thermometer. Featured in the virtual tour, the Great White Instrument Platform houses the most instruments of any installation at ARM's NSA site, including five

  19. Local Imaging of High Mobility Two-Dimensional Electron Systems with

    Office of Scientific and Technical Information (OSTI)

    Virtual Scanning Tunneling Microscopy (Journal Article) | SciTech Connect Local Imaging of High Mobility Two-Dimensional Electron Systems with Virtual Scanning Tunneling Microscopy Citation Details In-Document Search Title: Local Imaging of High Mobility Two-Dimensional Electron Systems with Virtual Scanning Tunneling Microscopy Authors: Pelliccione, M. ; /Stanford U., Appl. Phys. Dept. /SLAC /UC, Santa Barbara ; Bartel, J. ; /SLAC /Stanford U., Phys. Dept. ; Sciambi, A. ; /Stanford U.,

  20. NETL Researcher Honored with 2013 Federal Laboratory Award Morgantown, W.Va. - Dr. Stephen E. Zitney of the National Energy Technology

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

    Award Morgantown, W.Va. - Dr. Stephen E. Zitney of the National Energy Technology Laboratory (NETL) has been awarded a Mid-Atlantic region Federal Laboratory Consortium (FLC) award for Excellence in Technology Transfer for his work on the 3D Virtual Energy Plant Simulator and Immersive Training System. The 3D Virtual Energy Plant Simulator and Immersive Training System (ITS) deployed at NETL's Advanced Virtual Energy Simulation Training and Research (AVESTAR ® ) Center delivers the first

  1. Remote Access Options

    Energy Savers [EERE]

    Remote Access Options November 2013 Remote Access Options for EITS Customers If access is required to DOE Headquarters internal network resources, such as messaging, productivity tools or network-stored files and folders while away from the DOE building, you can access them through a Virtual Private Network. Follow the instructions below. (Note: You must have access to the Internet to use these services) Virtual Private Network A Virtual Private Network (VPN) is a private connection between two

  2. Offshore Wind Farm Model Development - Upcoming Release of the University

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

    of Minnesota's Virtual Wind Simulator | Department of Energy Offshore Wind Farm Model Development - Upcoming Release of the University of Minnesota's Virtual Wind Simulator Offshore Wind Farm Model Development - Upcoming Release of the University of Minnesota's Virtual Wind Simulator September 16, 2015 - 1:14pm Addthis Large-eddy simulation of wind farms with parameterization of wind turbines is emerging as a powerful tool for improving the performance and lowering the maintenance cost of

  3. Outdoor Solar Lighting | Department of Energy

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

    Electricity & Fuel » Lighting » Outdoor Solar Lighting Outdoor Solar Lighting Outdoor solar lights use solar cells, which convert sunlight into electricity, and are easy to install and virtually maintenance free. | Photo courtesy of ©iStockphoto.com/ndejan Outdoor solar lights use solar cells, which convert sunlight into electricity, and are easy to install and virtually maintenance free. | Photo courtesy of ©iStockphoto.com/ndejan Outdoor solar lights are easy to install and virtually

  4. DOE Announces Webinars on the Energy Department's Quadrennial Technology

    Office of Environmental Management (EM)

    Review, SunShot Incubator Virtual Company Showcase, and More | Department of Energy Energy Department's Quadrennial Technology Review, SunShot Incubator Virtual Company Showcase, and More DOE Announces Webinars on the Energy Department's Quadrennial Technology Review, SunShot Incubator Virtual Company Showcase, and More February 26, 2015 - 8:28am Addthis EERE offers webinars to the public on a range of subjects, from adopting the latest energy efficiency and renewable energy technologies, to

  5. Consortium for Advanced Simulation of Light Water Reactors (CASL...

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

    Thermal Hydraulics Methods (THM) Delivers next-generation thermal-hydraulic simulation tools to Virtual Environment for Reactor Applications (VERA) Thermal Hydraulics Methods...

  6. research and development

    National Nuclear Security Administration (NNSA)

    detection systems and fundamental physics research can be seen from your desktop computer or mobile device.

    PNNL recently launched a virtual tour showcasing its

  7. Net Metering

    Broader source: Energy.gov [DOE]

    Note: Illinois is currently undergoing a rulemaking that would change its existing net metering rules. The proposed rules include provisions clarifying virtual net metering policies, facilitating...

  8. CBEI: FDD for Advanced RTUs - 2015 Peer Review | Department of...

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

    Commercial Buildings - 2015 Peer Review CBEI: Virtual Refrigerant Charge Sensing and Load Metering - 2015 Peer Review Credit: United Technologies Research Center...

  9. Think Outside the Box During Our Open Data by Design Contest...

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

    with a virtual wind tunnel. | Photo courtesy of the Energy Department. Patricia A. Hoffman Patricia A. Hoffman Assistant Secretary, Office of Electricity Delivery & Energy...

  10. Microsoft Word - Improved Interfaces and Decision Support_FINAL...

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

    ... the speed and effectiveness of the human-machine interface. * Virtual reality environments ... algorithm then compares those signals to words and phrases from a pre-set ...

  11. Silicon Carbide (SiC) Technologies | GE Global Research

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

    for managing the flow of current for virtually everything ... For power generation sources like wind and solar energy, ... To get there, production costs need to go down while ...

  12. © Marketing Edge Consulting Group and TargetGov Successful Marketing...

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

    ... More Virtual Networks * Website * E-mail * Podcasts * Webinars * E-mail Newsletter * Online advertising * Online Social Networks 20 Marketing Edge Consulting Group and TargetGov ...

  13. NETL Researcher Honored with 2013 Federal Laboratory Consortium...

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

    and low-risk workforce training to the energy industries. Virtual reality-based training helps operators increase their process knowledge and confidence, so they can...

  14. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... Filter Results Filter by Subject nuclear physics and radiation physics (2) physics of ... Deeply virtual Compton scattering at small x Balitsky, Ian ; Theory Group, Jefferson Lab, ...

  15. Technologist in Residence pilot program pairs companies with...

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

    conducts leading-edge basic and applied scientific research in virtually every scientific discipline. Argonne researchers work closely with researchers from hundreds of companies,...

  16. Programming Tuning Options

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

    Tuning Options Programming Tuning Options Using Huge Pages Hugepages are virtual memory pages which are bigger than the default base page size of 4KB. Some applications may...

  17. NREL: Technology Transfer - Popular Mechanics: Scientists Break...

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

    Popular Mechanics: Scientists Break This Virtual Power Grid to Save the Real One July 27, 2015 Popular Mechanics describes how NREL's Energy Systems Integration Facility (ESIF)...

  18. Breakthrough Cutting Technology Promises to Reduce Solar Costs

    Broader source: Energy.gov [DOE]

    Silicon Genesis advancing the field of solar energy by developing a process that will virtually eliminate all waste when cutting materials needed to implement solar technology.

  19. Department of Energy Announces New Partnerships to Support Manufacturi...

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

    to provide students with highly interactive and engaging materials in a variety of science, technology, engineering and math (STEM) areas, as well as virtual technician training. ...

  20. Annual Report: Carbon Capture Simulation Initiative (CCSI) (30...

    Office of Scientific and Technical Information (OSTI)

    (2) reduce the time to design and troubleshoot new ... operational tests with virtual power plant simulations. ... reactors, combustion, process synthesis and ...

  1. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... (2) reduce the time to design and troubleshoot new ... operational tests with virtual power plant simulations. ... reactors, combustion, process synthesis and ...

  2. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    (e.g. impacts on process performance and ... (2) reduce the time to design and troubleshoot new ... operational tests with virtual power plant simulations. ...

  3. Local Imaging of High Mobility Two-Dimensional Electron Systems...

    Office of Scientific and Technical Information (OSTI)

    Local Imaging of High Mobility Two-Dimensional Electron Systems with Virtual Scanning Tunneling Microscopy Citation Details In-Document Search Title: Local Imaging of High Mobility ...

  4. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... Local Imaging of High Mobility Two-Dimensional Electron Systems with Virtual Scanning Tunneling Microscopy Pelliccione, M. ; Stanford U., Appl. Phys. Dept. SLAC UC, Santa ...

  5. 3D Scanner to Help Boost Worker Safety in Hanford Tank Farms

    Broader source: Energy.gov [DOE]

    RICHLAND, Wash. – A laser scanner is being tested in the Hanford tank farms as a mapping tool to help conduct virtual walk-downs.

  6. Tax Credits, Rebates & Savings | Department of Energy

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

    offers cash incentives to non-residential customers for virtually any cost-effective energy efficiency project. Standard incentives are available for lighting, controls, HVAC,...

  7. file://L:\\DOE-hanford.gov\\public\\boards\\hab\\advice\\advice85.htm

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

    of disproportionate cuts in cleanup work compared to cuts in overhead and indirect costs, and a virtual halt of progress in the high-priority Environmental Restoration...

  8. Consortium for Advanced Simulation of Light Water Reactors (CASL...

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

    LWRs; Develop and effectively apply modern virtual reactor technology; Engage the nuclear energy community through modeling and simulation; and Deploy new partnership and...

  9. Consortium for Advanced Simulation of Light Water Reactors (CASL...

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

    Virtual Environment for Scientific Collaboration Posted: April 30, 2013 The Consortium for Advanced Simulation of Light Water Reactors, the Department of Energy's first...

  10. Consortium for Advanced Simulation of Light Water Reactors (CASL...

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

    Radiation Transport Methods (RTM) Delivers next-generation radiation transport tools to the virtual Reactor RTM Vision Statement Objectives and Strategies Next generation,...

  11. National Laboratory Research and Development Funding Opportunities...

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

    ... Performance Sandia National Laboratories: Low-Cost Solar Variability Sensor for Ubiquitous Deployment Sandia National Laboratories: Optimization of a Virtual Power Plant to ...

  12. Ames Lab 101: VE-Suite

    ScienceCinema (OSTI)

    Bryden, Mark

    2012-08-29

    Ames Laboratory scientist Mark Bryden talks about virtual engineering and the advantages it gives engineers when they can "walk through" designs visually.

  13. Paging memory from random access memory to backing storage in a parallel computer

    DOE Patents [OSTI]

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

    2013-05-21

    Paging memory from random access memory (`RAM`) to backing storage in a parallel computer that includes a plurality of compute nodes, including: executing a data processing application on a virtual machine operating system in a virtual machine on a first compute node; providing, by a second compute node, backing storage for the contents of RAM on the first compute node; and swapping, by the virtual machine operating system in the virtual machine on the first compute node, a page of memory from RAM on the first compute node to the backing storage on the second compute node.

  14. Using powerful computers, physicists uncover mechanism that stabilizes...

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

    of the virtual plasma showing where the magnetic field lines intersect the plane. ... This gradient combines with the rotating magnetic field lines to create spinning rolls ...

  15. CAB Investment Review Summary

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

    IT Virtualization and Consolidation This project will replace and upgrade certain data center servers and associated infrastructure, as well as the install software tools to...

  16. T-536: Cisco ASA Multiple Flaws Let Remote Users Deny Service...

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

    Device Manager (ASDM) Administrative Access * Telnet Access * SSH Access * Virtual ... Security Focus Bugtraq ID: 45768 SecurityTracker Alert ID: 1024963 CVE-2010-4692 ...

  17. Wakonda Technologies Inc | Open Energy Information

    Open Energy Info (EERE)

    Inc Place: Greater Boston, Massachusetts Product: US manufacturer of thin-film PV cells that uses a Virtual Single Crystal technology that can be building-integrated....

  18. Science Council

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

    broadly by the U.S. nuclear energy industry Goals * Develop and effectively apply modern virtual reactor technology * Provide more understanding of safety margins while...

  19. Slide 1

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

    broadly by the U.S. nuclear energy industry Goals * Develop and effectively apply modern virtual reactor technology * Provide more understanding of safety margins while...

  20. Optimizing TLB entries for mixed page size storage in contiguous memory

    DOE Patents [OSTI]

    Chen, Dong; Gara, Alan; Giampapa, Mark E.; Heidelberger, Philip; Kriegel, Jon K.; Ohmacht, Martin; Steinmacher-Burow, Burkhard

    2013-04-30

    A system and method for accessing memory are provided. The system comprises a lookup buffer for storing one or more page table entries, wherein each of the one or more page table entries comprises at least a virtual page number and a physical page number; a logic circuit for receiving a virtual address from said processor, said logic circuit for matching the virtual address to the virtual page number in one of the page table entries to select the physical page number in the same page table entry, said page table entry having one or more bits set to exclude a memory range from a page.

  1. DOE Issues Agency Information Collection Extension for OE-417...

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

    the U.S. Trust Territories) so that the Government may help prevent the physical or virtual disruption of the operation of any critical infrastructure. Comments regarding this...

  2. PNNL: PNNL In the News - Newsletters

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

    Homeland Security Newsletter published by the Northwest Regional Technology Center, a virtual resource center operated by PNNL for emergency responder communities who are...

  3. SGP Overview Map

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

    Overview Map SGP Related Links Virtual Tour Facilities and Instruments Central Facility Boundary Facility Extended Facility Intermediate Facility Radiometric Calibration Facility...

  4. SGP Shipment Notification Form

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

    PlainsShipment Notification Form SGP Related Links Virtual Tour Facilities and Instruments Central Facility Boundary Facility Extended Facility Intermediate Facility Radiometric...

  5. Chloride-Magnesium Ratio of Shallow Groundwaters as a Regional...

    Open Energy Info (EERE)

    Hawaii Abstract Because of the complex geological and hydrological conditions and the virtual lack of thermal springs, regional geothermal investigations in Hawaii require the use...

  6. Watch a Live Stream of the Portland Public Meeting on the Quadrennial...

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

    Webinars on the Energy Department's Quadrennial Technology Review, SunShot Incubator Virtual Company Showcase, and More Department of Energy Announces Quadrennial Energy Review...

  7. CASL - Analysis of Two-Dimensional Lattice Physics

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

    Analysis of Two-Dimensional Lattice Physics CASL is developing the Virtual Environment for Reactor Applications (VERA) as a key capability to support the analysis of the CASL...

  8. Summer 2012 Cyclotron Institute REU Program

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

    led by Institute faculty. Students will have the opportunity to share their work via an oral presentation and virtual poster session. 2012 REU Group Participating Students...

  9. Summer 2010 Cyclotron Institute REU Program

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

    led by Institute faculty. Students will have the opportunity to share their work via an oral presentation and virtual poster session. Student Posters and Presentations (students...

  10. Summer 2014 Cyclotron Institute REU Program

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

    led by Institute faculty. Students will have the opportunity to share their work via an oral presentation and virtual poster session. 2014 REU Group Participating Students...

  11. Summer 2013 Cyclotron Institute REU Program

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

    led by Institute faculty. Students will have the opportunity to share their work via an oral presentation and virtual poster session. 2013 REU Group Participating Students...

  12. Browse by Discipline -- E-print Network Subject Pathways: Materials...

    Office of Scientific and Technical Information (OSTI)

    ... Laboratory Texas at Arlington, University of - Department of Computer Science and Engineering Texas at Austin, University of - Center for Perceptual Systems, Virtual Reality Lab. ...

  13. U.S Department of Energy Fuel Cell Technologies Office Overview...

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

    2015 Smithsonian Science Education Academies for Teachers Webcast: National Energy Literacy Virtual Town Hall FCTO Home About the Fuel Cell Technologies Office Hydrogen...

  14. Annual Report: Carbon Capture Simulation Initiative (CCSI) (30...

    Office of Scientific and Technical Information (OSTI)

    technology from laboratory-scale to commercial-scale; and (4) stabilize deployment costs more quickly by replacing some of the physical operational tests with virtual power ...

  15. DOE Tour of Zero: Pumpkin Ridge Passive House by Hammer and Hand...

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

    Rating System (HERS) score of 5. In other words, this home has virtually no net annual ... refrigerator, dishwasher, and clothes washer help to reduce energy and water usage. ...

  16. Estes Park Light and Power Department - Commercial and Industrial...

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

    Virtualization: 250 Office Lighting: 5 - 20 SensorsControls: 7 - 90 Summary Estes Park Power & Light, in conjunction with the Platte River Power Authority provides businesses...

  17. Stefan Lasiewski

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

    projects. Current projects include Improving IPv6 services for many publicly available web services, virtualization, DevOps and migrating server infrastructure to the new...

  18. EERE Program Management Initiative (PMI) Brochure

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

    ... EERE has made substantial investments in two separate information system development initiatives that complement each other and come together to form a virtual comprehensive ...

  19. Publications and Presentations About OSCARS

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

    optical virtual switch im- plementation managing a small optical transport network for big-data applications is described. With appropriate exten- sions to OpenFlow, we discuss...

  20. PROJECT PROFILE: California Center for Sustainable Energy (Solar...

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

    Energy (Solar Market Pathways) Title: Virtual Net Metering Market Development Plan CCSE logo.png Funding Opportunity: Solar Market Pathways SunShot Subprogram: Soft Costs...

  1. 1009-0630_17_2_05

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

    de- tailed single-crystal plasticity models 3 . Laser rays are propagated through a virtual composite mesh consist- ing of the finest resolution representation of the mod- eled...

  2. Small Business Internet Sites

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

    GAO Legal Reports, Guidance for Oral Presentations, Lobbying Brochure, and the Virtual Library on ARNET. http:professionals.pr.doe.govma5MA-5Web.nsfProcurement...

  3. Inquiring Minds - Questions About Physics

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

    Virtual Photon Question Brian, X-URL: http://www.fnal.gov/pub/hep_descript.html Dear Fermilab (or to whom this may be going to), Hi. I am 14 years old and I happen to be reading a physics book when I came across something called Virtual Photons and the uncertianty principle. The book does not explain what Virtual Photons are to well, and all I know about Photons is that they could be a wave or matter. If you could help me about what Virtual Photons are and Photons, that would be a great help.

  4. Sibendu Som | Argonne National Laboratory

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

    of Nozzle Orifice Geometry Fuel Spray Modeling High-Fidelity Large Eddy Simulations (LES) Multi-Dimensional Modeling Simulation Approaches for Drop-in Biofuels Virtual Engine...

  5. 1

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

    Supporting biosurveillance via the web January 28, 2015 Los Alamos science team gathers a virtual biological toolkit for international disease outbreak response LOS ALAMOS, N.M.,...

  6. NETL Researcher Honored with 2013 Federal Laboratory Consortium...

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

    industries. Virtual reality-based training helps operators increase their process knowledge and confidence, so they can bring plants online faster, reduce shutdowns and...

  7. Coulter-RL

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

    4-Year Study of the RASS Temperature Bias R. L. Coulter and B. M. Lesht Argonne National Laboratory Argonne, Illinois Introduction Measurements of vertical profiles of virtual...

  8. NREL: Transportation Research - Compare Vehicle Technologies

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

    of vehicles on today's roads, while developing the electric, fuel cell, and biofuel technologies needed to transition to a virtually net-zero emissions, non-polluting fleet. ...

  9. FY14 AWARD FEE DETERMINATION SCORECARD Contractor: Wastren-EnergX...

    Office of Environmental Management (EM)

    for the period. Significant Achievements: * Received the Federal Electronic Challenge Gold Award illustrating the site's commitment to sustainability. * Deployed the Virtual...

  10. http://doeintest/DOEXWEB/NEWS/PressReleases/PR080731-BodmanCong

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

    and uninhabited areas of Northern Alaska. These proposals are all languishing on Capitol Hill. Congressional leaders have failed to act on virtually all of the president's...

  11. BEFORE THE DEPARTMENT OF ENERGY

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

    ... Utilities can also subscribe to a managed virtual private network (VPN), which will also ... various classes of traffic on the VPN, so the utility's highest priority service ...

  12. QER- Comment of Solar Electric Power Association

    Broader source: Energy.gov [DOE]

    I realize the deadline has passed, but attached is a document for inclusion in the Virtual Library if it's not too late. Best regards,

  13. Award: DE-SC0005050 Title: Enabling Exascale...

    Office of Scientific and Technical Information (OSTI)

    ... Optimizing overlay-based virtual networking through optimistic interrupts and cut-through forwarding. In Proceedings of the 2012 ACMIEEE Conference on Supercomputing (SC'12), Salt ...

  14. de-fe0010808-uta | netl.doe.gov

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

    in the lower 48 states will come from unconventional resources-shales, low permeability sands, and heavy oil. Production of virtually all the oil and gas from...

  15. Consortium for Advanced Simulation of Light Water Reactors (CASL...

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

    of technology. Management Performance reflects CASL's ability to meet its virtual one-roof plan (collocation), maintain consortium cohesion and chemistry, and deliver its...

  16. Cloud Computing

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

    surge resources to address larger problems, and the advantages that come from increased economies of scale. Virtualization is the primary feature that provides these...

  17. OSTI, US Dept of Energy, Office of Scientific and Technical Informatio...

    Office of Scientific and Technical Information (OSTI)

    Information (OSTI) has launched the National Library of EnergyBeta (NLEBeta), a virtual library and open government resource to advance energy literacy, innovation and security. ...

  18. NNMCAB Combined Committee Agenda: July 2015 Pojoaque

    Broader source: Energy.gov [DOE]

    Agenda for the July 8, 2015 Committee meeting Presentation LANL, Overview RDX in Groundwater at LANL, Tim Goering Presentation LANL, Virtual Simulation Team, Kelly Michael

  19. openhouse | netl.doe.gov

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

    (ORD) Overview ORD Laboratory Virtual Tours: Albany, Oregon: Severe Environment Corrosion Erosion Facility (SECERF) High Pressure Immersion and Reactive Transport Laboratory...

  20. Microsoft Word - 500_FinalPaper.docx

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

    of a "virtual reactor toolkit" that incorporates science-base models, state-of-the-art numerical methods, modern computational science, modern software engineering, and...

  1. 2012Modeling_Factsheet.indd

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

    designated the Virtual Reactor (VR), will incorporate science-based models, state-of-the-art numerical methods, modern computational science and engineering practices, and UQ and...

  2. U

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

    infrastructure practices such as packet-filtering firewalls, Network Address Translation (NAT), and Virtual Private Networks (VPN). Sandia conducted testing of NSI...

  3. Four Scientific Approaches | JCESR

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

    at the atomic level for the three energy storage concepts. 3. Systems Analysis and Translation designs virtual batteries on the computer, projects their performance, identifies...

  4. Ameren Missouri (Electric) - Business Energy Efficiency Program...

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

    11 Occupancy Sensors: 15, 35, or 45 Exit Sign: 12 Desktop Virtualization: 22computer ENERGY STAR 5.0 Desktop Computer: 10computer PC Power Management Software: 10...

  5. FirmGreen Energy Inc FGE | Open Energy Information

    Open Energy Info (EERE)

    an integrated energy company participating in virtually all aspects of the global green energy business. Coordinates: 41.837752, -79.268594 Show Map Loading map......

  6. In 20th Year, Stockpile Stewardship Program Celebrated As One...

    National Nuclear Security Administration (NNSA)

    of modern science and engineering by requiring the transition from explosive nuclear weapons testing to what is effectively virtual nuclear testing-was celebrated today at a ...

  7. Cool CAVEs

    Broader source: Energy.gov [DOE]

    The Idaho National Laboratory's "CAVE" -- 3-D Computer-Assisted Virtual Environment –- allows scientists to literally walk into their data and look at it from multiple perspectives.

  8. Enhancement of soft X-ray lasing action with thin blade radiators

    DOE Patents [OSTI]

    Suckewer, Szymon (Princeton Junction, NJ); Skinner, Charles H. (Kingston, NJ); Voorhees, David R. (Hopewell, NJ)

    1988-01-01

    An enhancement of approximately 100 of stimulated emission over spontaneous emission of the CVI 182 Angstrom line was obtained in a recombining magnetically confined plasma column. The plasma was formed by focusing a CO.sub.2 laser beam on a carbon disc. A magnetic solenoid produced a strong magnetic field which confined the plasma to the shape of a column. A single thin carbon blade extended parallel to the plasma column and served to make the column axially more uniform and also acted as a heat sink. Axial and transverse measurements of the soft X-ray lasing action were made from locations off-set from the central axis of the plasma column. Multiple carbon blades located at equal intervals around the plasma column were also found to produce acceptable results. According to another embodiment 10 a thin coating of aluminum or magnesium was placed on the carbon disc and blade. The Z of the coating should preferably be at least 5 greater than the Z of the target. Measurements of the soft X-rays generated at 182 Angstroms showed a significant increase in intensity enhancement.

  9. The global coastal hazards data base

    SciTech Connect (OSTI)

    Gornitz, V. . Goddard Inst. for Space Studies Columbia Univ., New York, NY ); White, T.W. )

    1989-01-01

    A rise of sea level between 0.5 and 1.5 m, caused by predicted climate warming in the next century, could jeopardize low-lying radioactive waste disposal sites near the coast, due to permanent and episodic inundation, increased shoreline retreat, and changes in the water table. The effects of global sea level rise on the shoreline will not be spatially uniform. Therefore, site selection will depend on assessment of these differential vulnerabilities, in order to avoid high-risk coasts. The coastal hazards data base described here could provide an appropriate framework. The coastal hazards data base integrates relevant topographic, geologic, geomorphologic, erosional and subsidence information in a Geographic Information System (GIS), to identify high-risk shorelines characterized by low coastal relief, an erodible substrate, present and past evidence of subsidence, extensive shoreline retreat, and high wave/tide energies. Data for seven variables relating to inundation and erosion hazards are incorporated into the ORNL ARC/INFO Geographic Information System (GIS). Data compilation has been completed for the US and is being extended to North America, and ultimately the world. A coastal vulnerability index (CVI) has been designed to flag high risk coastal segments. 17 refs., 2 figs., 2 tabs.

  10. A coastal hazards data base for the U.S. West Coast

    SciTech Connect (OSTI)

    Gornitz, V.M. |; Beaty, T.W.; Daniels, R.C.

    1997-12-01

    This document describes the contents of a digital data base that may be used to identify coastlines along the US West Coast that are at risk to sea-level rise. This data base integrates point, line, and polygon data for the US West Coast into 0.25{degree} latitude by 0.25{degree} longitude grid cells and into 1:2,000,000 digitized line segments that can be used by raster or vector geographic information systems (GIS) as well as by non-GIS data bases. Each coastal grid cell and line segment contains data variables from the following seven data sets: elevation, geology, geomorphology, sea-level trends, shoreline displacement (erosion/accretion), tidal ranges, and wave heights. One variable from each data set was classified according to its susceptibility to sea-level rise and/or erosion to form 7 relative risk variables. These risk variables range in value from 1 to 5 and may be used to calculate a Coastal Vulnerability Index (CVI). Algorithms used to calculate several CVIs are listed within this text.

  11. LabView Based Nuclear Physics Laboratory experiments as a remote teaching and training tool for Latin American Educational Centers

    SciTech Connect (OSTI)

    Sajo-Bohus, L.; Greaves, E. D.; Barros, H.; Gonzalez, W.; Rangel, A.

    2007-10-26

    A virtual laboratory via internet to provide a highly iterative and powerful teaching tool for scientific and technical discipline is given. The experimenter takes advantage of a virtual laboratory and he can execute nuclear experiment at introductory level e.g. Gamma ray detection with Geiger-Mueller Counter at remote location using internet communication technology.

  12. Science & Technology Review March 2007

    SciTech Connect (OSTI)

    Radousky, H B

    2007-02-05

    This month's issue has the following articles: (1) Partnering to Enhance Americans Health--Commentary by Tomas Diaz de la Rubia; (2) Advancing the Frontiers in Cancer Research--Researchers at the University of California Davis Cancer Center and Lawrence Livermore are teaming up to fight cancer; (3) On the Leading Edge of Atmospheric Predictions--Continual research and development at the National Atmospheric Release Advisory Center help mitigate the consequences of toxic airborne hazards; (4) Climate and Agriculture: Change Begets Change--A Livermore researcher is using computer models to explore how a warmer climate may affect crop yields in California; (5) New Routes to High Temperatures and Pressures--With functionally graded density impactors composed of thin metal and polyethylene films, researchers can explore new areas of experimental physics; and (6) From Sound Waves to Stars: Teller's Contributions to Shock Physics--Edward Teller's interest in shock physics led to significant developments in both basic and applied science.

  13. Data communications in a parallel active messaging interface of a parallel computer

    DOE Patents [OSTI]

    Blocksome, Michael A.; Ratterman, Joseph D.; Smith, Brian E.

    2014-09-02

    Eager send data communications in a parallel active messaging interface (`PAMI`) of a parallel computer, the PAMI composed of data communications endpoints that specify a client, a context, and a task, including receiving an eager send data communications instruction with transfer data disposed in a send buffer characterized by a read/write send buffer memory address in a read/write virtual address space of the origin endpoint; determining for the send buffer a read-only send buffer memory address in a read-only virtual address space, the read-only virtual address space shared by both the origin endpoint and the target endpoint, with all frames of physical memory mapped to pages of virtual memory in the read-only virtual address space; and communicating by the origin endpoint to the target endpoint an eager send message header that includes the read-only send buffer memory address.

  14. Data communications in a parallel active messaging interface of a parallel computer

    DOE Patents [OSTI]

    Blocksome, Michael A.; Ratterman, Joseph D.; Smith, Brian E.

    2014-09-16

    Eager send data communications in a parallel active messaging interface (`PAMI`) of a parallel computer, the PAMI composed of data communications endpoints that specify a client, a context, and a task, including receiving an eager send data communications instruction with transfer data disposed in a send buffer characterized by a read/write send buffer memory address in a read/write virtual address space of the origin endpoint; determining for the send buffer a read-only send buffer memory address in a read-only virtual address space, the read-only virtual address space shared by both the origin endpoint and the target endpoint, with all frames of physical memory mapped to pages of virtual memory in the read-only virtual address space; and communicating by the origin endpoint to the target endpoint an eager send message header that includes the read-only send buffer memory address.

  15. Review of Enabling Technologies to Facilitate Secure Compute Customization

    SciTech Connect (OSTI)

    Aderholdt, Ferrol; Caldwell, Blake A; Hicks, Susan Elaine; Koch, Scott M; Naughton, III, Thomas J; Pelfrey, Daniel S; Pogge, James R; Scott, Stephen L; Shipman, Galen M; Sorrillo, Lawrence

    2014-12-01

    High performance computing environments are often used for a wide variety of workloads ranging from simulation, data transformation and analysis, and complex workflows to name just a few. These systems may process data for a variety of users, often requiring strong separation between job allocations. There are many challenges to establishing these secure enclaves within the shared infrastructure of high-performance computing (HPC) environments. The isolation mechanisms in the system software are the basic building blocks for enabling secure compute enclaves. There are a variety of approaches and the focus of this report is to review the different virtualization technologies that facilitate the creation of secure compute enclaves. The report reviews current operating system (OS) protection mechanisms and modern virtualization technologies to better understand the performance/isolation properties. We also examine the feasibility of running ``virtualized'' computing resources as non-privileged users, and providing controlled administrative permissions for standard users running within a virtualized context. Our examination includes technologies such as Linux containers (LXC [32], Docker [15]) and full virtualization (KVM [26], Xen [5]). We categorize these different approaches to virtualization into two broad groups: OS-level virtualization and system-level virtualization. The OS-level virtualization uses containers to allow a single OS kernel to be partitioned to create Virtual Environments (VE), e.g., LXC. The resources within the host's kernel are only virtualized in the sense of separate namespaces. In contrast, system-level virtualization uses hypervisors to manage multiple OS kernels and virtualize the physical resources (hardware) to create Virtual Machines (VM), e.g., Xen, KVM. This terminology of VE and VM, detailed in Section 2, is used throughout the report to distinguish between the two different approaches to providing virtualized execution environments. As part of our technology review we analyzed several current virtualization solutions to assess their vulnerabilities. This included a review of common vulnerabilities and exposures (CVEs) for Xen, KVM, LXC and Docker to gauge their susceptibility to different attacks. The complete details are provided in Section 5 on page 33. Based on this review we concluded that system-level virtualization solutions have many more vulnerabilities than OS level virtualization solutions. As such, security mechanisms like sVirt (Section 3.3) should be considered when using system-level virtualization solutions in order to protect the host against exploits. The majority of vulnerabilities related to KVM, LXC, and Docker are in specific regions of the system. Therefore, future "zero day attacks" are likely to be in the same regions, which suggests that protecting these areas can simplify the protection of the host and maintain the isolation between users. The evaluations of virtualization technologies done thus far are discussed in Section 4. This includes experiments with 'user' namespaces in VEs, which provides the ability to isolate user privileges and allow a user to run with different UIDs within the container while mapping them to non-privileged UIDs in the host. We have identified Linux namespaces as a promising mechanism to isolate shared resources, while maintaining good performance. In Section 4.1 we describe our tests with LXC as a non-root user and leveraging namespaces to control UID/GID mappings and support controlled sharing of parallel file-systems. We highlight several of these namespace capabilities in Section 6.2.3. The other evaluations that were performed during this initial phase of work provide baseline performance data for comparing VEs and VMs to purely native execution. In Section 4.2 we performed tests using the High-Performance Computing Conjugate Gradient (HPCCG) benchmark to establish baseline performance for a scientific application when run on the Native (host) machine in contrast with execution under Docker and KVM. Our tests verified prior studie

  16. PROJECT PROFILE: California Center for Sustainable Energy (Solar Market Pathways)

    Broader source: Energy.gov [DOE]

    The Center for Sustainable Energy (CSE) is creating the Virtual Net Metering Market Development Plan as a part of the Solar Market Pathways program to expand the awareness, effectiveness and use of virtual net metering in California and beyond. California recently passed a virtual net metering tariff, which allows kilowatt hour credits from one solar system to be distributed to numerous utility accounts throughout the property based on a predetermined allocation arrangement. Currently, solar adoption outside of traditional commercial or single family rooftop systems has been challenging for solar markets throughout California. Virtual net metering is a system that enables a multi-meter property owner to allocate a solar system's energy credits to other tenants. CSE aims to expand the application of virtual net metering to multifamily and multi-metered homes and facilities. For more information on this award and the Solar Market Pathway’s program, visit their website.

  17. Condensing economizers for small coal-fired boilers and furnaces

    SciTech Connect (OSTI)

    Butcher, T.A.; Litzke, W.

    1994-01-01

    Condensing economizers increase the thermal efficiency of boilers by recovering sensible and latent heat from exhaust gas. These economizers are currently being used commercially for this purpose in a wide range of applications. Performance is dependent upon application-specific factors affecting the utility of recovered heat. With the addition of a condensing economizer boiler efficiency improvements up to 10% are possible. Condensing economizers can also capture flue gas particulates. In this work, the potential use of condensing economizers for both efficiency improvement and control of particulate emissions from small, coal water slurry-fired boilers was evaluated. Analysis was done to predict heat transfer and particulate capture by mechanisms including: inertial impaction, interception, diffusion, thermophoretic forces, and condensation growth. Shell-and-tube geometries were considered with flue gas on the outside of Teflon-covered tubes. Experimental studies were done with both air- and water-cooled economizers refit to a small boiler. Two experimental arrangements were used including oil-firing with injection of flyash upstream of the economizer and direct coal water slurry firing. Firing rates ranged from 27 to 82 kW (92,000 to 280,000 Btu/hr). Inertial impaction was found to be the most important particulate capture mechanism and removal efficiencies to 95% were achieved. With the addition of water sprays directly on the first row of tubes, removal efficiencies increased to 98%. Use of these sprays adversely affects heat recovery. Primary benefits of the sprays are seen to be the addition of small impaction sites and future design improvements are suggested in which such small impactors are permanently added to the highest velocity regions of the economizer. Predicted effects of these added impactors on particulate removal and pressure drop are presented.

  18. Princeton Plasma Physics Laboratory annual report, October 1, 1982-September 30, 1983

    SciTech Connect (OSTI)

    Phillips, C.A.

    1983-01-01

    The Tokamak Fusion Test Reactor (TFTR) achieved first plasma at 3:05 a.m. on December 24, 1982. During the course of the year, the plasma current was raised to a maximum of 1 MA, and extensive confinement studies were carried out with ohmic-heated plasmas. The most important finding was that tokamak energy confinement time increases as the cube of the plasma size. The Princeton Large Torus (PLT) carried out a number of high-powered plasma-heating experiments in the ion cyclotron frequency range, and also demonstrated for the first time that a 100-kA tokamak discharge can be built up by means of rf-waves in the lower hybrid range, without any need for inductive current drive by the conventional tokamak transformer system. The Poloidal Divertor Experiment (PDX) demonstrated that substantial improvements in plasma confinement during intense neutral-beam heating can be obtained by means of either a magnetic divertor or a mechanical scoop limiter. The S-1 spheromak experiment has come into operation, with first plasma in January 1983, and machine completion in August. The soft X-ray laser development experiment continues to make strong progress towards the demonstration of laser amplification. Thus far, a single-pass gain of 3.5 has been achieved, using the 182 A line of CVI. Theoretical MHD-stability studies have shed new light on the nature of the energetic-ion-driven ''fishbone instability,'' and the utilization of the bean-shaping technique to reach higher beta values in the tokamak.

  19. Assessment of Silicon Carbide Composites for Advanced Salt-Cooled Reactors

    SciTech Connect (OSTI)

    Katoh, Yutai; Wilson, Dane F; Forsberg, Charles W

    2007-09-01

    The Advanced High-Temperature Reactor (AHTR) is a new reactor concept that uses a liquid fluoride salt coolant and a solid high-temperature fuel. Several alternative fuel types are being considered for this reactor. One set of fuel options is the use of pin-type fuel assemblies with silicon carbide (SiC) cladding. This report provides (1) an initial viability assessment of using SiC as fuel cladding and other in-core components of the AHTR, (2) the current status of SiC technology, and (3) recommendations on the path forward. Based on the analysis of requirements, continuous SiC fiber-reinforced, chemically vapor-infiltrated SiC matrix (CVI SiC/SiC) composites are recommended as the primary option for further study on AHTR fuel cladding among various industrially available forms of SiC. Critical feasibility issues for the SiC-based AHTR fuel cladding are identified to be (1) corrosion of SiC in the candidate liquid salts, (2) high dose neutron radiation effects, (3) static fatigue failure of SiC/SiC, (4) long-term radiation effects including irradiation creep and radiation-enhanced static fatigue, and (5) fabrication technology of hermetic wall and sealing end caps. Considering the results of the issues analysis and the prospects of ongoing SiC research and development in other nuclear programs, recommendations on the path forward is provided in the order or priority as: (1) thermodynamic analysis and experimental examination of SiC corrosion in the candidate liquid salts, (2) assessment of long-term mechanical integrity issues using prototypical component sections, and (3) assessment of high dose radiation effects relevant to the anticipated operating condition.

  20. Th1A.2.pdf

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

    Th1A.2.pdf OFC 2015 © OSA 2015 WAN Virtualization and Dynamic End-to-End Bandwidth Provisioning Using SDN Adrian Lara 1 , Byrav Ramamurthy 1 , Eric Pouyoul 2 and Inder Monga 2 1 University of Nebraska-Lincoln, Lincoln NE 68504 {alara,byrav}@cse.unl.edu 2 Energy Science Network, Lawrence Berkeley National Laboratory, Berkeley CA 94720 {lomax,imonga}@es.net Abstract: We evaluate a WAN-virtualization framework in terms of delay and scalability and demonstrate that adding a virtual layer between

  1. Direct access inter-process shared memory

    DOE Patents [OSTI]

    Brightwell, Ronald B; Pedretti, Kevin; Hudson, Trammell B

    2013-10-22

    A technique for directly sharing physical memory between processes executing on processor cores is described. The technique includes loading a plurality of processes into the physical memory for execution on a corresponding plurality of processor cores sharing the physical memory. An address space is mapped to each of the processes by populating a first entry in a top level virtual address table for each of the processes. The address space of each of the processes is cross-mapped into each of the processes by populating one or more subsequent entries of the top level virtual address table with the first entry in the top level virtual address table from other processes.

  2. Exclusive heavy quarkonium +{gamma} production from e{sup +}e{sup -}

    Office of Scientific and Technical Information (OSTI)

    annihilation into a virtual photon (Journal Article) | SciTech Connect Exclusive heavy quarkonium +{gamma} production from e{sup +}e{sup -} annihilation into a virtual photon Citation Details In-Document Search Title: Exclusive heavy quarkonium +{gamma} production from e{sup +}e{sup -} annihilation into a virtual photon We compute the cross section for exclusive production of a photon associated with a heavy quarkonium H of charge-conjugation parity C=+1 from e{sup +}e{sup -} annihilation

  3. High power microwave generator

    DOE Patents [OSTI]

    Minich, Roger W. (Patterson, CA)

    1988-01-01

    A device (10) for producing high-powered and coherent microwaves is described. The device comprises an evacuated, cylindrical, and hollow real cathode (20) that is driven to inwardly field emit relativistic electrons. The electrons pass through an internally disposed cylindrical and substantially electron-transparent cylindrical anode (24), proceed toward a cylindrical electron collector electrode (26), and form a cylindrical virtual cathode (32). Microwaves are produced by spatial and temporal oscillations of the cylindrical virtual cathode (32), and by electrons that reflex back and forth between the cylindrical virtual cathode (32) and the cylindrical real cathode (20).

  4. Advancing Research & Technology in the Sciences (ARTS) Forum | Department

    Energy Savers [EERE]

    of Energy Advancing Research & Technology in the Sciences (ARTS) Forum Advancing Research & Technology in the Sciences (ARTS) Forum January 28, 2016 - 4:11pm Addthis VE-Suite, a virtual engineering tool developed at Ames Laboratory, displayed on a six-sided virtual reality room which helps engineers build greener, next-generation power plants faster and less expensively than ever before. VE-Suite, a virtual engineering tool developed at Ames Laboratory, displayed on a six-sided

  5. Neuro-parity pattern recognition system and method

    DOE Patents [OSTI]

    Gross, Kenneth C. (Bolingbrook, IL); Singer, Ralph M. (Naperville, IL); Van Alstine, Rollin G. (Lecanto, FL); Wegerich, Stephan W. (Glendale Heights, IL); Yue, Yong (Chicago, IL)

    2000-01-01

    A method and system for monitoring a process and determining its condition. Initial data is sensed, a first set of virtual data is produced by applying a system state analyzation to the initial data, a second set of virtual data is produced by applying a neural network analyzation to the initial data and a parity space analyzation is applied to the first and second set of virtual data and also to the initial data to provide a parity space decision about the condition of the process. A logic test can further be applied to produce a further system decision about the state of the process.

  6. FedVTE | Department of Energy

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

    Train2.jpg The Federal Virtual Training Environment (FedVTE) is a multi-media, e-learning environment that provides free cybersecurity training resources to employees and...

  7. Microwave generator

    DOE Patents [OSTI]

    Kwan, T.J.T.; Snell, C.M.

    1987-03-31

    A microwave generator is provided for generating microwaves substantially from virtual cathode oscillation. Electrons are emitted from a cathode and accelerated to an anode which is spaced apart from the cathode. The anode has an annular slit there through effective to form the virtual cathode. The anode is at least one range thickness relative to electrons reflecting from the virtual cathode. A magnet is provided to produce an optimum magnetic field having the field strength effective to form an annular beam from the emitted electrons in substantial alignment with the annular anode slit. The magnetic field, however, does permit the reflected electrons to axially diverge from the annular beam. The reflected electrons are absorbed by the anode in returning to the real cathode, such that substantially no reflexing electrons occur. The resulting microwaves are produced with a single dominant mode and are substantially monochromatic relative to conventional virtual cathode microwave generators. 6 figs.

  8. Natural Gas Weekly Update

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    (Wednesday-Wednesday), prices at the Henry Hub were virtually unchanged, climbing 1 cent, to 7.11 per MMBtu. Yesterday (April 27), the price of the NYMEX futures contract for...

  9. Natural Gas Weekly Update, Printer-Friendly Version

    Gasoline and Diesel Fuel Update (EIA)

    (Wednesday-Wednesday), prices at the Henry Hub were virtually unchanged, climbing 1 cent, to 7.11 per MMBtu. Yesterday (April 27), the price of the NYMEX futures contract for...

  10. Outline

    Office of Scientific and Technical Information (OSTI)

    ... Though these texts cover a wide range of technical and marketing issues related to the ... A virtual tour of the Elk plant is available online at

  11. Running with Java

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

    Running with Java Running with Java Workflows that require the Java Virtual Machine will run into a couple of issues when running on Genepool. Java Software installed on Genepool...

  12. 5 Questions for a Scientist: Materials Engineer David Forrest...

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

    Since 1970, we have seen the rise of the Minimill, which uses smaller and cheaper electric arc furnaces to make steel by melting scrap metal. In 1970, virtually all steel was...

  13. Tweet with Deputy Secretary Sherwood-Randall | The Ames Laboratory

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

    the DOE laboratory complex will have the opportunity to engage with Deputy Secretary Elizabeth Sherwood-Randall on Twitter. VIRTUAL OFFICE HOUR: At 12:30 p.m. (ET) on January 8,...

  14. Megatux

    Energy Science and Technology Software Center (OSTI)

    2012-09-25

    The Megatux platform enables the emulation of large scale (multi-million node) distributed systems. In particular, it allows for the emulation of large-scale networks interconnecting a very large number of emulated computer systems. It does this by leveraging virtualization and associated technologies to allow hundreds of virtual computers to be hosted on a single moderately sized server or workstation. Virtualization technology provided by modern processors allows for multiple guest OSs to run at the same time,moresharing the hardware resources. The Megatux platform can be deployed on a single PC, a small cluster of a few boxes or a large cluster of computers. With a modest cluster, the Megatux platform can emulate complex organizational networks. By using virtualization, we emulate the hardware, but run actual software enabling large scale without sacrificing fidelity.less

  15. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    In addition, our enhanced version of the Palacios virtual machine monitor has been adopted as a core element of the Hobbes operating system under active DOE-fundedmore research ...

  16. Tour of Zero: How you can help customers find better homes at...

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

    Description: Are you interested in helping homebuyers find a better home at a lower cost? The DOE Tour of Zero provides the opportunity for visitors to take a virtual tour of...

  17. Tour of Zero: How you can Help Customers Find Better Homes at...

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

    Description: Are you interested in helping homebuyers find a better home at a lower cost? The DOE Tour of Zero provides the opportunity for visitors to take a virtual tour of...

  18. Press Pass - Press Releases

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

    website in the nation, said they designed the new site to make the science of high-energy physics more accessible to the laboratory's virtual visitors. "On a typical day,...

  19. SRNL Development of Recovery Processes for Mark-18A Heavy Actinide...

    Office of Scientific and Technical Information (OSTI)

    the Mark-18A. Mark-18A assemblies were irradiated in Savannah River Site (SRS) reactors in the 1970s under extremely high neutron-flux conditions and produced, virtually, ...

  20. DOE ZERH Webinar: Tour of Zero, Helping Customers Find Better Homes at Lower Costs

    Broader source: Energy.gov [DOE]

    Are you interested in helping homebuyers find a better home at a lower cost? The DOE Tour of Zero provides the opportunity for visitors to take a virtual tour of high-performance Zero Energy Ready...

  1. CMR17

    Office of Scientific and Technical Information (OSTI)

    that has been shown experimentally to produce large-scale flow changes (e.g., re-attachment of separated flow or virtual aerodynamic shaping of lifting surfaces) from...

  2. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    density Ge on Si virtual substrates for the successive integration of III-V multijunction solar cells on Si. The suggested approach is simple and fast -thus allowing for high...

  3. 2004 - 06 | Jefferson Lab

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

    June 2004 Sun, 06132004 - 11:00pm Tiny details crucial for building particle detector prototype (Pittsburgh Post-Gazette) Thu, 06032004 - 11:00pm 'Virtual Enterprises' Teach...

  4. User Liaison Office

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

    Office Space User space is available in the ARC, reserve space here. arc-thumb.jpg Click to see Virtual Tour 12000 Jefferson Avenue, Newport News, VA 23606 Phone: (757) 269-7255...

  5. EMagin Corporation | Open Energy Information

    Open Energy Info (EERE)

    eMagin Corporation Place: Bellevue, Washington State Zip: 98004 Product: eMagin makes visual data equipment for near-eye virtual imaging systems. They use the OLED displays in...

  6. CX-100146 Categorical Exclusion Determination

    Office of Energy Efficiency and Renewable Energy (EERE)

    Virtual Net Metering Market Development Plan Award Number: DE-EE0006902 CX(s) Applied: A9, A11 Date: 12/12/2014 Location(s): CA Office(s): Golden Field Office

  7. U-192: VMware Workstation/Player VM Remote Device Bug Lets Local...

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

    aBSTRACT: A local or remote user can cause denial of service conditions on the target virtual system. reference LINKS: Vendor Advisory Security Tracker ID 1027173 CVE-2012-3289...

  8. ARM - VAP Product - rwptemp

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

    1-888-ARM-DATA. Send VAP Output : RWPTEMP Radar Wind Profilers (RWP), 50 and 915 MHZ: virtual temperature profiles Active Dates 1995.12.15 - 2006.05.14 Originating VAP Process...

  9. CX-005023: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Energy Efficiency and Conservation Block Grant - Server Virtualization ProjectCX(s) Applied: B5.1Date: 01/13/2011Location(s): Loudon County, VirginiaOffice(s): Energy Efficiency and Renewable Energy, Golden Field Office

  10. VERIFI Brochure | Argonne National Laboratory

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

    VERIFI Brochure The Virtual Engine Research Institute and Fuels Initiative (VERIFI) is the first and only source in the world for high-fidelity, end-to-end, combustion engine...

  11. Natural Gas Weekly Update

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    18 (next release 2:00 p.m. on August 25) Since Wednesday, August 10, natural gas spot prices increased more than 50 cents per MMBtu at virtually all market locations in the Lower...

  12. Natural Gas Weekly Update, Printer-Friendly Version

    Gasoline and Diesel Fuel Update (EIA)

    2, 2004 (next release 2:00 p.m. on April 29) Since Wednesday, April 14, natural gas spot prices have decreased at virtually all market locations in the Lower 48 States. For the...

  13. Natural Gas Weekly Update

    Gasoline and Diesel Fuel Update (EIA)

    April 22, 2004 (next release 2:00 p.m. on April 29) Since Wednesday, April 14, natural gas spot prices have decreased at virtually all market locations in the Lower 48 States. For...

  14. Natural Gas Weekly Update, Printer-Friendly Version

    Gasoline and Diesel Fuel Update (EIA)

    8 (next release 2:00 p.m. on August 25) Since Wednesday, August 10, natural gas spot prices increased more than 50 cents per MMBtu at virtually all market locations in the Lower 48...

  15. Building a private cloud with Open Nebula

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

    Short Ryan Glenn Ross Nordeen Mentors: Andree Jacobson ISTI-OFF David Kennel DCS-1 LA-UR 10-05197 Why use Virtualized Cloud Computing for HPC? * Support Legacy Software Stacks *...

  16. Natural Gas Weekly Update, Printer-Friendly Version

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    33.06 per barrel or 5.70 per MMBtu. Prices: A respite from below-normal temperatures led to price declines of at least 12 cents per MMBtu at virtually all market locations in...

  17. Summer 2016 Cyclotron Institute REU Program

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

    led by Institute faculty. Students will have the opportunity to share their work via an oral presentation and virtual poster session. Program Dates: May 31st - August 5th, 2016...

  18. 16F

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

    16O(p, n), E 35 MeV; measured (En), (); deduced giant multipole resonance virtual excitation. 16F level deduced J, , T. DWBA, shell model. 1982OR04: 16O(p, n), E...

  19. Labs

    National Nuclear Security Administration (NNSA)

    requiring the transition from explosive nuclear weapons testing to what is effectively virtual nuclear testing-was celebrated today at a half-day public event hosted by the...

  20. Title of the paper

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

    are; this technique can also be utilized later on a real turbine in the field. Three virtual vibration test scenarios are performed in order to identify the modes. First, the...

  1. Teacher Resource Kit

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

    in which there is magnetic force). The facility is called the National High Magnetic Field Laboratory. You are welcome to share a tour of the facility by visiting the virtual...

  2. Natural Gas Weekly Update

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

    June 1 (next release 2:00 p.m. on June 8, 2006) Natural gas spot prices were virtually unchanged at most market locations in the Lower 48 States during the holiday-shortened...

  3. Natural Gas Weekly Update, Printer-Friendly Version

    Gasoline and Diesel Fuel Update (EIA)

    June 1 (next release 2:00 p.m. on June 8, 2006) Natural gas spot prices were virtually unchanged at most market locations in the Lower 48 States during the holiday-shortened...

  4. Natural Gas Weekly Update, Printer-Friendly Version

    Gasoline and Diesel Fuel Update (EIA)

    8 (next release 2:00 p.m. on May 25, 2006) Natural gas spot prices decreased this week (Wednesday - Wednesday, May 10-17) at virtually all market locations, partly because of weak...

  5. Natural Gas Weekly Update

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    18 (next release 2:00 p.m. on May 25, 2006) Natural gas spot prices decreased this week (Wednesday - Wednesday, May 10-17) at virtually all market locations, partly because of weak...

  6. Natural Gas Weekly Update

    Gasoline and Diesel Fuel Update (EIA)

    December 30 (next release 2:00 p.m. on January 6) Since Wednesday, December 22, natural gas spot prices have decreased sharply at virtually all market locations in the Lower 48...

  7. Natural Gas Weekly Update, Printer-Friendly Version

    Gasoline and Diesel Fuel Update (EIA)

    30 (next release 2:00 p.m. on January 6) Since Wednesday, December 22, natural gas spot prices have decreased sharply at virtually all market locations in the Lower 48 States. For...

  8. Natural Gas Weekly Update, Printer-Friendly Version

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    6, 2007 (next release 2:00 p.m. on August 23, 2007) Since Wednesday, August 8, natural gas spot prices increased at virtually all markets in the Lower 48 States outside the Rocky...

  9. Natural Gas Weekly Update

    Gasoline and Diesel Fuel Update (EIA)

    16, 2007 (next release 2:00 p.m. on August 23, 2007) Since Wednesday, August 8, natural gas spot prices increased at virtually all markets in the Lower 48 States outside the Rocky...

  10. Sustainable Transportation: Accelerating Widespread Adoption...

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

    ... majority of vehicles on today's roads, while developing the EDV, fuel cell, and biofuel technologies needed to transition to a virtually net-zero emissions, non-polluting fleet. ...

  11. Public comment sought on final end state of Experimental Breeder...

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

    The EBR-II was an innovative sodium-cooled reactor with an ... inherently safe Integral Fast Reactor (IFR) concept in 1986. The IFR tests proved that reactors could be made virtually ...

  12. ALSNews Vol. 277

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

    primary component of his job will be the ALS Detector Program. "This program is a virtual umbrella that brings together talent from the ALS, Engineering, and Physics to focus on...

  13. Rfinity

    ScienceCinema (OSTI)

    Aaron R. Turner

    2010-01-08

    An innovation that offers a low-cost, plug-n-play option that enables virtually any wireless telecommunications device to safely store sensitive personal information and perform secure transactions. INL researchers include Steven McCown, Aaron Turner, Kur

  14. Three-dimensional Modeling of Fracture Clusters in Geothermal Reservoirs

    Broader source: Energy.gov [DOE]

    Project objective: to develop a 3-D numerical model for simulating mode I; II; and III (tensile; shear; and tearing propagation of multiple fractures using the virtual multi-dimensional internal bond (VMIB); to predict geothermal reservoir stimulation.

  15. Apparatus and method for modifying the operation of a robotic vehicle in a real environment, to emulate the operation of the robotic vehicle operating in a mixed reality environment

    DOE Patents [OSTI]

    Garretson, Justin R. (Albuquerque, NM); Parker, Eric P. (Albuquerque, NM); Gladwell, T. Scott (Albuquerque, NM); Rigdon, J. Brian (Edgewood, NM); Oppel, III, Fred J. (Albuquerque, NM)

    2012-05-29

    Apparatus and methods for modifying the operation of a robotic vehicle in a real environment to emulate the operation of the robotic vehicle in a mixed reality environment include a vehicle sensing system having a communications module attached to the robotic vehicle for communicating operating parameters related to the robotic vehicle in a real environment to a simulation controller for simulating the operation of the robotic vehicle in a mixed (live, virtual and constructive) environment wherein the affects of virtual and constructive entities on the operation of the robotic vehicle (and vice versa) are simulated. These effects are communicated to the vehicle sensing system which generates a modified control command for the robotic vehicle including the effects of virtual and constructive entities, causing the robot in the real environment to behave as if virtual and constructive entities existed in the real environment.

  16. SVDI Ver. 1.1

    Energy Science and Technology Software Center (OSTI)

    2009-06-09

    SVDI is the Sandia Virtual Device Interface library which is an internal library used by SEAMS codes (blot and fastq) to provide graphics to multiple device types; primarily X11R6 clients.

  17. Web Articles | Argonne Leadership Computing Facility

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

    Paving the Way for Theta and Aurora insideHPC CAVE2 Virtual Environment National Science Foundation Budget Request Reveals New Elements of US Exascale Program HPCwire more news Web ...

  18. L3:VRI.PSS.P3.01 Ross Bartlett ORNL

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

    VRI.PSS.P3.01 Ross Bartlett ORNL Completed: 93011 CASL-U-2011-0167-000 Technical Note Virtual Reactor Integration VERA From: Roscoe A. Bartlett (ORNNL), and Roger Pawlowski (SNL)...

  19. Inquiring Minds

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

    physics. Acronyms of High-Energy Physics A glossary of acronyms to help decipher the language of high-energy physics. Virtual Ask-a-Scientist Read transcripts from past online...

  20. Answering Mom: What Is Cloud Computing? | GE Global Research

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

    flaws to this model - it is incomplete, exaggerates some aspects, and clothes are not digital (yet) so cannot be replicated or transmitted (like a virtual closet). But as a...

  1. Climate Change Impacts on Fish and Wildlife

    Broader source: Energy.gov [DOE]

    The Earth’s climate is changing. In some places such as the Arctic, the change is rapid and profound, while in other areas change has been less dramatic and more gradual. But virtually everywhere,...

  2. 915-MHz Radar Wind Profiler (915RWP) Handbook

    SciTech Connect (OSTI)

    Coulter, R

    2005-01-01

    The 915 MHz radar wind profiler/radio acoustic sounding system (RWP/RASS) measures wind profiles and backscattered signal strength between (nominally) 0.1 km and 5 km and virtual temperature profiles between 0.1 km and 2.5 km. It operates by transmitting electromagnetic energy into the atmosphere and measuring the strength and frequency of backscattered energy. Virtual temperatures are recovered by transmitting an acoustic signal vertically and measuring the electromagnetic energy scattered from the acoustic wavefront. Because the propagation speed of the acoustic wave is proportional to the square root of the virtual temperature of the air, the virtual temperature can be recovered by measuring the Doppler shift of the scattered electromagnetic wave.

  3. Thermilate Europe | Open Energy Information

    Open Energy Info (EERE)

    distributes an insulating paint additive which can be added to virtually any coating. References: Thermilate Europe1 This article is a stub. You can help OpenEI by...

  4. A partonic interpretation of DVCS at small x{sub B{sub j}}

    SciTech Connect (OSTI)

    Kumericki, Kresimir; Mueller, Dieter; Passek-Kumericki, Kornelija

    2009-03-23

    We describe small-X{sub B{sub j}} deeply virtual Compton scattering measurements at HERA in terms of generalized parton distributions at leading order of perturbation series.

  5. DVU info now on the OLWD website

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy (DOE) Virtual University (DVU) was a website that provided employees cost-effective and user-friendly options for professional development and training 24/7. The DVU...

  6. Solar Decathlon Update from Secretary Chu

    ScienceCinema (OSTI)

    Chu, Steven

    2013-05-29

    Secretary Steven Chu provides his insights on the 2009 Solar Decathlon in Washington, DC. To view each of the houses in this year's competition and vote for your favorite, visit http://www.solardecathlon.org/virtual_tours/

  7. An Update on Advanced Battery Manufacturing | Department of Energy

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

    in 2020, an average annual growth rate of roughly 25 percent. Earlier this year, the Toyota Prius became the third best-selling vehicle in the world. Virtually every major...

  8. 1

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

    to reach the virtually inaccessible worksite, TerranearPMC used a 275-ton, all-terrain crane to transport workers and specialized excavation equipment down to the canyon slope and...

  9. Videos | Photosynthetic Antenna Research Center

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

    Videos Videos December 16, 2015 Science in St. Louis | Dr. Benjamin Kumfer An Introduction to Carbon Capture, Utilization, and Storage Original Event Info: Read more about Science in St. Louis | Dr. Benjamin Kumfer December 10, 2015 Ultrafast Laser Facility - Virtual Tour A look at the technology and science in the Ultrafast lab PARC Research Scientist Darek Niedzwiedzki hosted a virtual tour of the Ultrafast Laser Facility for St. Louis University High School students. Special thanks to teacher

  10. Resources for Implementing Federal Utility Energy Service Contracts |

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

    Department of Energy Utility Energy Service Contracts » Resources for Implementing Federal Utility Energy Service Contracts Resources for Implementing Federal Utility Energy Service Contracts The Federal Energy Management Program (FEMP) offers resources to help federal agencies implement utility energy service contracts (UESCs). UESC case studies are also available. Virtual Center of Expertise The UESC Virtual Center of Expertise helps federal agencies and utilities significantly streamline

  11. Energy Solutions Conference | Department of Energy

    Energy Savers [EERE]

    Energy Solutions Conference Energy Solutions Conference March 23, 2016 9:00AM EDT to March 24, 2016 4:00PM EDT Online The virtual Energy Solutions Conference will be held March 23-24, 2016. Bioenergy Technologies Office Director Jonathan Male will be giving a virtual presentation on the Office's activities supporting the federal bioeconomy as part of the renewable energy portion of the program.

  12. OSTI, US Dept of Energy, Office of Scientific and Technical Information |

    Office of Scientific and Technical Information (OSTI)

    Speeding access to science information from DOE and Beyond warehouse Topic How to Integrate Anything on the Web by Dr. Walt Warnick 03 Aug, 2011 in Technology Computer Integration OSTI is especially proud of its web integration work whereby we take multiple web pages, documents, and web databases and make them appear to the user as if they were an integrated whole. Once the sources are virtually integrated by OSTI, the virtual collection becomes searchable via a single query. Because

  13. OSTI, US Dept of Energy, Office of Scientific and Technical Information |

    Office of Scientific and Technical Information (OSTI)

    Speeding access to science information from DOE and Beyond integration Topic How to Integrate Anything on the Web by Dr. Walt Warnick 03 Aug, 2011 in Technology Computer Integration OSTI is especially proud of its web integration work whereby we take multiple web pages, documents, and web databases and make them appear to the user as if they were an integrated whole. Once the sources are virtually integrated by OSTI, the virtual collection becomes searchable via a single query. Because

  14. OSTI, US Dept of Energy, Office of Scientific and Technical Information |

    Office of Scientific and Technical Information (OSTI)

    Speeding access to science information from DOE and Beyond Topic How to Integrate Anything on the Web by Dr. Walt Warnick 03 Aug, 2011 in Technology Computer Integration OSTI is especially proud of its web integration work whereby we take multiple web pages, documents, and web databases and make them appear to the user as if they were an integrated whole. Once the sources are virtually integrated by OSTI, the virtual collection becomes searchable via a single query. Because information on

  15. Vacuum Insulation for Windows | Department of Energy

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

    Vacuum Insulation for Windows Vacuum Insulation for Windows Image of vacuum capsules in water (4 mg/ml) used for dip coating. Image of vacuum capsules in water (4 mg/ml) used for dip coating. Image of vacuum capsules deposited using dip coating, demonstrating virtually no visual degradation. Image of vacuum capsules deposited using dip coating, demonstrating virtually no visual degradation. Image of vacuum capsules in water (4 mg/ml) used for dip coating. Image of vacuum capsules deposited using

  16. Using powerful computers, physicists uncover mechanism that stabilizes

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

    plasma within tokamaks | Princeton Plasma Physics Lab Using powerful computers, physicists uncover mechanism that stabilizes plasma within tokamaks By Raphael Rosen November 17, 2015 Tweet Widget Google Plus One Share on Facebook A cross-section of the virtual plasma showing where the magnetic field lines intersect the plane. The central section has field lines that rotate exactly once. (Photo by Stephen Jardin) A cross-section of the virtual plasma showing where the magnetic field lines

  17. Using powerful computers, physicists uncover mechanism that stabilizes

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

    plasma within tokamaks | Princeton Plasma Physics Lab Using powerful computers, physicists uncover mechanism that stabilizes plasma within tokamaks By Raphael Rosen November 17, 2015 Tweet Widget Google Plus One Share on Facebook A cross-section of the virtual plasma showing where the magnetic field lines intersect the plane. The central section has field lines that rotate exactly once. (Photo by Stephen Jardin) A cross-section of the virtual plasma showing where the magnetic field lines

  18. Inquiring Minds - Questions About Physics

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

    Photons in Electromagnetic Interactions You wrote: The exchange of virtual photons in the elastic scattering of particles of charged particles explains the phenomenon of electrostatic repulsion of particles of the same charge. How does the exchange of virtual photons as per QED explain the electrostatic attraction of particles of opposite charge? - Colin Cumming Dear Colin, I know that it's hard to visualize, but it works the same way. When it comes to repulsion, you can think of two people

  19. minimega

    Energy Science and Technology Software Center (OSTI)

    2013-08-27

    Minimega is a simple emulytics platform for creating testbeds of networked devices. The platform consists of easily deployable tools to facilitate bringing up large networks of virtual machines including Windows, Linux, and Android. Minimega attempts to allow experiments to be brought up quickly with nearly no configuration. Minimega also includes tools for simple cluster management, as well as tools for creating Linux based virtual machine images.

  20. NREL: Electric Infrastructure Systems Research - Distributed Energy

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

    Resources Test Facility Virtual Tour Electricity Integration Research Printable Version Distributed Energy Resources Test Facility Virtual Tour The Distributed Energy Resources Test Facility (DERTF), located at the National Renewable Energy Laboratory in Golden, Colorado, was designed to assist the distributed power industry in the development and testing of distributed power systems. Researchers use state-of-the-art laboratories and outdoor test beds to characterize the performance and