National Library of Energy BETA

Sample records for beluga whale interactions

  1. Acoustic Monitoring of Beluga Whale Interactions with Cook Inlet Tidal Energy Project

    SciTech Connect (OSTI)

    Worthington, Monty

    2014-02-05

    Cook Inlet, Alaska is home to some of the greatest tidal energy resources in the U.S., as well as an endangered population of beluga whales (Delphinapterus leucas). Successfully permitting and operating a tidal power project in Cook Inlet requires a biological assessment of the potential and realized effects of the physical presence and sound footprint of tidal turbines on the distribution, relative abundance, and behavior of Cook Inlet beluga whales. ORPC Alaska, working with the Project Team—LGL Alaska Research Associates, University of Alaska Anchorage, TerraSond, and Greeneridge Science—undertook the following U.S. Department of Energy (DOE) study to characterize beluga whales in Cook Inlet – Acoustic Monitoring of Beluga Whale Interactions with the Cook Inlet Tidal Energy Project (Project). ORPC Alaska, LLC, is a wholly-owned subsidiary of Ocean Renewable Power Company, LLC, (collectively, ORPC). ORPC is a global leader in the development of hydrokinetic power systems and eco-conscious projects that harness the power of ocean and river currents to create clean, predictable renewable energy. ORPC is developing a tidal energy demonstration project in Cook Inlet at East Foreland where ORPC has a Federal Energy Regulatory Commission (FERC) preliminary permit (P-13821). The Project collected baseline data to characterize pre-deployment patterns of marine mammal distribution, relative abundance, and behavior in ORPC’s proposed deployment area at East Foreland. ORPC also completed work near Fire Island where ORPC held a FERC preliminary permit (P-12679) until March 6, 2013. Passive hydroacoustic devices (previously utilized with bowhead whales in the Beaufort Sea) were adapted for study of beluga whales to determine the relative abundance of beluga whale vocalizations within the proposed deployment areas. Hydroacoustic data collected during the Project were used to characterize the ambient acoustic environment of the project site pre-deployment to inform the FERC pilot project process. The Project compared results obtained from this method to results obtained from other passive hydrophone technologies and to visual observation techniques performed simultaneously. This Final Report makes recommendations on the best practice for future data collection, for ORPC’s work in Cook Inlet specifically, and for tidal power projects in general. This Project developed a marine mammal study design and compared technologies for hydroacoustic and visual data collection with potential for broad application to future tidal and hydrokinetic projects in other geographic areas. The data collected for this Project will support the environmental assessment of future Cook Inlet tidal energy projects, including ORPC’s East Foreland Tidal Energy Project and any tidal energy developments at Fire Island. The Project’s rigorous assessment of technology and methodologies will be invaluable to the hydrokinetic industry for developing projects in an environmentally sound and sustainable way for areas with high marine mammal activity or endangered populations. By combining several different sampling methods this Project will also contribute to the future preparation of a comprehensive biological assessment of ORPC’s projects in Cook Inlet.

  2. KILLER WHALE PREDATION ON BELUGAS IN COOK INLET, ALASKA: IMPLICATIONS

    E-Print Network [OSTI]

    , National Marine Fisheries Service, NOAA, 7600 Sand Point Way NE, Seattle, Washington 98115, U.S.A. BARBARA Fisheries Science Center, NMFS, NOAA, 7600 Sand Point Way NE, Seattle, Washington 98115, U.S.A. ABSTRACT, sightings were infrequent (18 in 27 yr), especially prior to the 1990s. Beach cast beluga carcasses

  3. Computer simulation of the probability that endangered whales will interact with oil spills

    SciTech Connect (OSTI)

    Reed, M.; Jayko, K.; Bowles, A.; Anderson, E.; Leatherwood, S.

    1987-03-01

    A numerical model system was developed to assess quantitatively the probability that endangered bowhead and gray whales will encounter spilled oil in Alaskan waters. Bowhead and gray whale migration and diving-surfacing models, and an oil-spill trajectory model comprise the system. The migration models were developed from conceptual considerations, then calibrated with and tested against observations. The movement of a whale point is governed by a random walk algorithm which stochastically follows a migratory pathway. The oil-spill model, developed under a series of other contracts, accounts for transport and spreading behavior in open water and in the presence of sea ice. Historical wind records and heavy, normal, or light ice cover data sets are selected at random to provide stochastic oil-spill scenarios for whale-oil interaction simulations.

  4. Beluga Coal Gasification - ISER

    SciTech Connect (OSTI)

    Steve Colt

    2008-12-31

    ISER was requested to conduct an economic analysis of a possible 'Cook Inlet Syngas Pipeline'. The economic analysis was incorporated as section 7.4 of the larger report titled: 'Beluga Coal Gasification Feasibility Study, DOE/NETL-2006/1248, Phase 2 Final Report, October 2006, for Subtask 41817.333.01.01'. The pipeline would carry CO{sub 2} and N{sub 2}-H{sub 2} from a synthetic gas plant on the western side of Cook Inlet to Agrium's facility. The economic analysis determined that the net present value of the total capital and operating lifecycle costs for the pipeline ranges from $318 to $588 million. The greatest contributor to this spread is the cost of electricity, which ranges from $0.05 to $0.10/kWh in this analysis. The financial analysis shows that the delivery cost of gas may range from $0.33 to $0.55/Mcf in the first year depending primarily on the price for electricity.

  5. Comprehensive Video Ethogram on Beluga (Delphinapterus leucas) Behavior 

    E-Print Network [OSTI]

    Campbell, Carolyn Ann

    2012-07-16

    . There are several studies focused on different aspects of beluga behavior, including nursing behaviors of calves. There are also a few studies on general 8 physiological characteristics of belugas conducted in the care of humans, focused on growth... healthy diverse population in the care of humans. Two studies have focused on specific behaviors observed in belugas: bubble blows and the occurrence of S-posturing. Delfour and Aulagnier (1997) observed five captive adult belugas to examine...

  6. Beluga, Alaska: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental JumpInformation Beaufort County,Bel AirPennsylvania:California:BeltramiBeluga,

  7. Abundance of Belugas, Delphinapterus leucas, in Cook Inlet, Alaska, 19942000

    E-Print Network [OSTI]

    , perhaps to optimize feed ing opportunities on fish runs (Hunting- ton, 2000; Moore et al., 2000). Observed spring and early summer, dense aggregations of belugas are found near river mouths along the shores

  8. The Blue Whale, Balaenoptera musculus

    E-Print Network [OSTI]

    The Blue Whale, Balaenoptera musculus SALLY A. MIZROCH, DALE W. RICE, and JEFFREY M. BREIWICK Introduction The blue whale, Balaenoptera mus- culus (Linnaeus, 1758), is not only the largest of the whales metric tons (t) (Mackintosh, 1942). Blue whales are entirely bluish-gray in color, except for the white

  9. False Killer Whale Dorsal Fin Disfigurements as a Possible Indicator of Long-Line Fishery Interactions in Hawaiian Waters1

    E-Print Network [OSTI]

    Baird, Robin W.

    (Pseudorca crassidens) are known to interact with the Hawai`i-based tuna and swordfish long-line fish- ery

  10. Alaska Regional Energy Resources Planning Project. Phase 2: coal, hydroelectric and energy alternatives. Volume I. Beluga Coal District Analysis

    SciTech Connect (OSTI)

    Rutledge, G.; Lane, D.; Edblom, G.

    1980-01-01

    This volume deals with the problems and procedures inherent in the development of the Beluga Coal District. Socio-economic implications of the development and management alternatives are discussed. A review of permits and approvals necessary for the initial development of Beluga Coal Field is presented. Major land tenure issues in the Beluga Coal District as well as existing transportation routes and proposed routes and sites are discussed. The various coal technologies which might be employed at Beluga are described. Transportation options and associated costs of transporting coal from the mine site area to a connecting point with a major, longer distance transportation made and of transporting coal both within and outside (exportation) the state are discussed. Some environmental issues involved in the development of the Beluga Coal Field are presented. (DMC)

  11. Social Behavior and Ecology of "Southern Resident" Killer Whales (Orcinus orca) Jennifer Anne Marsh

    E-Print Network [OSTI]

    forces and behavioral characteristics interact to shape the structure and dynamics of social systems whales frequent inshore waters between Southern Vancouver Island, British Columbia, Canada, and the San Juan Island, Washington, USA (Baird, Hanson, & Dill, 2005). The "southern resident" killer whale

  12. FY 2010 NOAA BUDGET HIGHLIGHTS (National Marine Fisheries Service)

    E-Print Network [OSTI]

    : With these funds NMFS will conduct conservation and recovery actions for Hawaiian Monk Seals, Cook Inlet Beluga Whales, ice seals, and convene a new Take Reduction Team to reduce harmful interactions between marine

  13. Blue whale response to underwater noise from commercial ships

    E-Print Network [OSTI]

    McKenna, Megan Frances

    2011-01-01

    hydrodynamics and energetics of blue whale lunge feeding:2010. Association between Blue Whale (Balaenoptera musculus)and calling behavior of blue whales from a suction-cup-

  14. The Gray Whale, Eschrichtius robustus

    E-Print Network [OSTI]

    and MeadI), but has been extinct there for several cen- turies. Distribution and Migration Eastern North the migration routes. Stippling indicates the winter grounds. In the Atlantic, the gray whale has been extinct). 46(4),1984 7 #12;A new~orn gray whale calf in Laguna Ojo de Liebre, Baja California, Mexico. Each

  15. Measuring the Impact of Tidal Power Installations on Endangered Beluga

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuelsof EnergyApril 2014 |Department ofMay 2013 Monthly News Blast May 2013Whales

  16. Orchestration : the movement and vocal behavior of free-ranging Norwegian killer whales (Orcinus orca)

    E-Print Network [OSTI]

    Shapiro, Ari Daniel

    2008-01-01

    Studying the social and cultural transmission of behavior among animals helps to identify patterns of interaction and information content flowing between individuals. Killer whales are likely to acquire traits culturally ...

  17. The Humpback Whale, Megaptera novaeangliae

    E-Print Network [OSTI]

    or flippers. Occasional- ly it holds one flipper in the air while lying on one side or both. The humpback has humpback whale on its wintering grounds near Maui, Hawaii. Note the ex- tremely long flippers. Photo by J to nearshore pollution, boat traffic, mineral and industrial development, and other human activi- ty

  18. Blue and fin whale acoustics and ecology off Antarctic Peninsula

    E-Print Network [OSTI]

    Širovi?, Ana

    2006-01-01

    for increases in Antarctic blue whales based on BayesianG. , 1962b. The movements of blue and fin whales within theF. G. Wheeler, 1929. Southern blue and fin whales. Discovery

  19. Biomechanics of North Atlantic right whale bone : mandibular fracture as a fatal endpoint for blunt vessel-whale collision modeling

    E-Print Network [OSTI]

    Campbell-Malone, Regina P

    2007-01-01

    The North Atlantic right whale, Eubalaena glacialis, one of the most critically endangered whales in the world, is subject to high anthropogenic mortality. Vessel-whale collisions and entanglement in fishing gear were ...

  20. Are Antarctic minke whales unusually abundant because of 20th century whaling?

    E-Print Network [OSTI]

    Palumbi, Stephen

    size of the Antarctic minke whale prior to whaling by sequencing 11 nuclear genetic markers from 52 estimates, suggesting that managing Antarctic ecosystems under the assumption that Antarctic minke whales). Teasing apart the effects of top predator removal requires knowledge of an ecosystem before and after

  1. Behavioral context of call production by eastern North Pacific blue whales

    E-Print Network [OSTI]

    Oleson, Erin M; Calambokidis, J; Burgess, W C; McDonald, M A; LeDuc, C A; Hildebrand, J A

    2007-01-01

    by eastern North Pacific blue whales Erin M. Oleson 1, *,context of calls produced by blue whales Balaenoptera mus-North Pacific population of blue whales (Thompson 1965,

  2. (ARCTIC WHALE ECOLOGY STUDY) 2013 Cruise Report

    E-Print Network [OSTI]

    of 51 This report was prepared by the ARCWEST principal investigators: Nancy A. Friday1 , Ph.D., Phillip.30 million square kilometers). This area was more than 50% less than that of two decades ago. The speed-round presence of large whales is needed in the Chukchi Sea planning area. Timing and location of whale

  3. Blue whale (Balaenoptera musculus) sounds from the North Atlantic

    E-Print Network [OSTI]

    Blue whale (Balaenoptera musculus) sounds from the North Atlantic David K. Mellingera) Bioacoustics 2003 Sounds of blue whales were recorded from U.S. Navy hydrophone arrays in the North Atlantic-duration, very-low-frequency sound units repeated every 1­2 min are typical of blue whale sounds recorded

  4. Revised 9/27/05 HUMPBACK WHALE (Megaptera novaeangliae)

    E-Print Network [OSTI]

    whales in the North Pacific encompassed coastal and inland waters around the Pacific Rim from PointRevised 9/27/05 HUMPBACK WHALE (Megaptera novaeangliae): Central North Pacific Stock STOCK(-23( latitude). Humpback whales in the high latitudes of the North Pacific are seasonal migrants that feed North-Pacific

  5. Blue and fin whale call source levels and propagation range in the Southern Ocean

    E-Print Network [OSTI]

    Sirovic, Anna; Hildebrand, John A; Wiggins, Sean

    2007-01-01

    graphic characterization of blue whale song worldwide: UsingAugust 2007 Širovi? et al. : Blue and ?n whale source levelsout of the discussion of blue whales,” Rep. Int. Whal. Comm.

  6. Occurrence, behavior and genetic diversity of bowhead whales in the Western Sea of Okhotsk, Russia 

    E-Print Network [OSTI]

    MacLean, Stephen Ahgeak

    2002-01-01

    The Okhotsk Sea (OS) stock of bowhead whales was severely reduced by commercial whaling in the late 19th century and again by illegal Soviet pelagic whaling in the 1960s. Estimates of the population prior to exploitation ...

  7. CX-003341: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Acoustic Monitoring of Beluga Whale Interactions with Cook Inlet Tidal Energy ProjectCX(s) Applied: B3.3Date: 08/10/2010Location(s): Anchorage, AlaskaOffice(s): Energy Efficiency and Renewable Energy, Golden Field Office

  8. 61(3), 1999 1 History of Whaling and Estimated

    E-Print Network [OSTI]

    , Reeves and Mitchell surveyed whale charts (1983) and compiled catch data for shore whaling on Long Island and now is with the Natural History Museum of Los Angeles County, 900 Exposition Blvd., Los Angeles, CA essentially absent from coastal waters south of Maine during the summer and autumn. Based on documented

  9. Revised 2/6/05 HUMPBACK WHALE (Megaptera novaeangliae)

    E-Print Network [OSTI]

    encompassed coastal and inland waters around the Pacific Rim from Point Conception, California, northRevised 2/6/05 HUMPBACK WHALE (Megaptera novaeangliae): Western North Pacific Stock STOCK and South Hemispheres (from 10(-23( latitude). Humpback whales in the high latitudes of the North Pacific

  10. MFR PAPER 1196 Utilization of the Bowhead Whale

    E-Print Network [OSTI]

    is with the Marine Mammal Division, National Marine Fisheries Service, NOAA, Naval Support Activity, Building 192, and for manufacturing soap, candles. paints, varnishes. and lubri- cation oils (VanStone, 1958). One large bowhead whale

  11. NEW HOST RECORD FOR THE WHALE LOUSE ISOCYAMUS DELPHINII (AMPHIPODA, CYAMIDAE)

    E-Print Network [OSTI]

    -beaked dolphin, Lagenorhynchus albirostris (Gray, 1846), the false killer whale, Pseudorca crassidens (Owen, 1846) for specimens collected from the false killer whale, Pseudorca crassidens. All previously-reported hosts

  12. bowhead whales. The Naval Arctic Re-search Laboratory at Barrow, Alaska,

    E-Print Network [OSTI]

    , Greenland whale, or bowhead. Unpubl. manuscr. [Vol. 15, Encyclopedia Arctica], 71 p. Avail. Dartmouth. Biology of the bowhead whale (Sa/aena mysticetus) in the western Arctic. Unpubl. manuscr., 93 p. Dep. Bio

  13. Aquatic Mammals 2010, 36(2), 195-204, DOI 10.1578/AM.36.2.2010.195 First Record of Predation on False Killer Whales

    E-Print Network [OSTI]

    Stockin, Karen

    on False Killer Whales (Pseudorca crassidens) by Killer Whales (Orcinus orca) Ingrid N. Visser,1 Jochen- dation on false killer whales (Pseudorca crassi- dens) is reported here. On 25 March 2010, a group of 50, cetacean, killer whale, Orcinus orca, false killer whale, Pseudorca crassidens, cookie cutter shark

  14. MFR PAPER 1254 Humpback Whales in Hawaii: Vessel Census, 1976

    E-Print Network [OSTI]

    seen during a subsequent monk seal survey off the Leeward Islands. INTRODUCTION Humpback whales Hawaiian Islands during a vessel survey from 24 February to 6 March 7976. Indications, Megaptera novaeangliae, wintering in Hawaiian waters, were surveyed by the Marine Mammal Division (MMD

  15. Arctic Whale Ecology Study (ARCWEST)/ Chukchi Acoustics, Oceanography, and Zooplankton

    E-Print Network [OSTI]

    (AKC 108) November 2014 #12;ARCWEST 2014 Cruise Report M12PG00021 (AKC 108) 2 of 51 This report set in 2007 (4.30 million square kilometers). This area was more than 50% less than that of two information on the year-round presence of large whales is needed in the Chukchi Sea planning area. Timing

  16. Cook Inlet (CI) distribution

    E-Print Network [OSTI]

    Figure 1. Approximate distribution of beluga whales in Alaska waters. The dark shading displays (DeMaster 1995: pp. 16). CURRENT AND MAXIMUM NET PRODUCTIVITY RATES A reliable estimate of the maximum net productivity rate is currently unavailable for the Beaufort Sea stock of beluga whales. Hence

  17. The population genetics of gray whales (Eschrichtius robustus) in the North Pacific

    E-Print Network [OSTI]

    Lang, Aimée R.

    2010-01-01

    Panel on the impacts of Sakhalin II Phase 2 on western Northgray whales summering off Sakhalin Island, Russia. Paperin coastal and offshore Sakhalin shelf waters. International

  18. Assessment of Strike of Adult Killer Whales by an OpenHydro Tidal Turbine Blade

    SciTech Connect (OSTI)

    Carlson, Thomas J.; Elster, Jennifer L.; Jones, Mark E.; Watson, Bruce E.; Copping, Andrea E.; Watkins, Michael L.; Jepsen, Richard A.; Metzinger, Kurt

    2012-02-01

    Report to DOE on an analysis to determine the effects of a potential impact to an endangered whale from tidal turbines proposed for deployment in Puget Sound.

  19. Testing the effectiveness of an acoustic deterrent for gray whales along the Oregon coast

    SciTech Connect (OSTI)

    Lagerquist, Barbara; Winsor, Martha; Mate, Bruce

    2012-12-31

    This study was conducted to determine whether a low-powered sound source could be effective at deterring gray whales from areas that may prove harmful to them. With increased interest in the development of marine renewal energy along the Oregon coast the concern that such development may pose a collision or entanglement risk for gray whales. A successful acoustic deterrent could act as a mitigation tool to prevent harm to whales from such risks. In this study, an acoustic device was moored on the seafloor in the pathway of migrating gray whales off Yaquina Head on the central Oregon coast. Shore-based observers tracked whales with a theodolite (surveyor’s tool) to accurately locate whales as they passed the headland. Individual locations of different whales/whale groups as well as tracklines of the same whale/whale groups were obtained and compared between times with the acoustic device was transmitting and when it was off. Observations were conducted on 51 d between January 1 and April 15, 2012. A total of 143 individual whale locations were collected for a total of 243 whales, as well as 57 tracklines for a total of 142 whales. Inclement weather and equipment problems resulted in very small sample sizes, especially during experimental periods, when the device was transmitting. Because of this, the results of this study were inconclusive. We feel that another season of field testing is warranted to successfully test the effectiveness of the deterrent, but recommend increasing the zone of influence to 3 km to ensure the collection of adequate sample sizes. Steps have been taken to acquire the necessary federal research permit modification to authorize the increased zone of influence and to modify the acoustic device for the increased power. With these changes we are confident we will be able to determine whether the deterrent is effective at deflecting gray whales. A successful deterrent device may serve as a valuable mitigation tool to protect gray whales, and other baleen whales, in the event that marine energy development poses a collision or entanglement risk.

  20. Evidence of a Possible Decline since 1989 in False Killer Whales (Pseudorca crassidens) around the Main Hawaiian Islands1

    E-Print Network [OSTI]

    Baird, Robin W.

    253 Evidence of a Possible Decline since 1989 in False Killer Whales (Pseudorca crassidens) around killer whales (Pseudorca crassidens) around the main Hawaiian Islands. Although it is known that false isolated, island-associated popula- tion of false killer whales, Pseudorca crassidens (Owen), around

  1. ESTIMATES OF THE LANDED CATCH OF RIGHT (AND OTHER WHALEBONE) WHALES IN THE AMERICAN FISHERY, 1805-1909

    E-Print Network [OSTI]

    of oil and whalebone peak of the fishery. the American whaling fleet whales listed for partic- ular voyages by C. H. Townsend, and the declared returns of whale oil and whalebone from the same \\'o.vages as Iistl,d b.v A. Starbuck and R. B. Hegarty, mean oil and whalebone

  2. A Pygmy Blue Whale (Cetacea: Balaenopteridae) in the Inshore Waters of New Caledonia1 Philippe Borsa2,3

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A Pygmy Blue Whale (Cetacea: Balaenopteridae) in the Inshore Waters of New Caledonia1 Philippe 14, 9750 AA, Haren, The Netherlands. To be cited as: Borsa P., Hoarau G. 2004. A pygmy blue whale;Abstract: The occurrence of a blue whale is reported for the first time for the New Caledonian archipelago

  3. In press in: Whales, Whaling and Marine Ecosystems, James Estes, ed., University of California Press, 12/03 Bigger is Better: The Role of Whales as Detritus in Marine Ecosystems

    E-Print Network [OSTI]

    Smith, Craig

    1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 In press in: Whales, Whaling and Marine as Detritus in Marine Ecosystems Craig R. Smith Department of Oceanography University of Hawaii at Manoa 1000 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 6 g of organic carbon in energy-rich lipids and proteins

  4. Behavior and movement of southern right whales: effects of boats and swimmers 

    E-Print Network [OSTI]

    Lundquist, David Jeffrey

    2007-09-17

    . From September to November of 2005 and July to October of 2006, I collected movement and behavioral state data for southern right whales in proximity of swimmers at Pen�­nsula Vald�©s, Argentina. Whales were observed before, during, and after a...

  5. MAINTENANCE OF THE NORTH ATLANTIC RIGIFfWHALE CATALOG 1 JANUARY -30 JUNE, 1998

    E-Print Network [OSTI]

    Center 166 Water Street Woods Hole, MA 02543 Contract No. 46 EANF 600004 October, 1998 #12;CATALOG STATUSMAINTENANCE OF THE NORTH ATLANTIC RIGIFfWHALE CATALOG 1 JANUARY - 30 JUNE, 1998 Philip K. Hamilton The right whale photo-identification catalog presently contains 12,688 photographed records of388 right

  6. A Preliminary Estimate of the Reduction of the Western Arctic Bowhead Whale

    E-Print Network [OSTI]

    where the bowheads, oil-rich, baleen- laden, and docile, were found in num- bers. Roys quickly filled his ship and returned to Honolulu to broadcast his success. Word of these new whaling grounds spread ice of the central Bering Sea a month later. They took a few whales as they worked their way north

  7. Insights into the Evolution of Longevity from the Bowhead Whale Genome

    E-Print Network [OSTI]

    de Magalhães, João Pedro

    and Natural Resources, Purdue University, West Lafayette, IN 47907, USA 15North Slope Borough, DepartmentResource Insights into the Evolution of Longevity from the Bowhead Whale Genome Graphical Abstract Correspondence jp@senescence.info In Brief The bowhead whale is the longest-lived mammal, possibly living over

  8. Blue Whale Skeleton at the Seymour Marine Discovery Center at Long Marine Laboratory

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Blue Whale Skeleton at the Seymour Marine Discovery Center at Long Marine Laboratory Arching 87 feet in length and rising 18 feet above the ground, the blue whale skeleton at the Seymour Center Ms. Blue and move her to the present Seymour Center. This seemed a perfect opportunity to perform

  9. Western Gray Whale (Eschrichtius robustus) Mother and Calf Ecology Off Sakhalin Island 

    E-Print Network [OSTI]

    Sychenko, Olga Aleksandrovna

    2012-07-16

    The western population of gray whales (Eschrichtius robustus) is endangered with approximately 130 individuals remaining. Many individuals return annually to the same feeding sites off northeastern Sakhalin Island, indicating a site...

  10. Anthropogenic Disturbance of Western Gray Whale Behavior Off Sakhalin Island, Russia 

    E-Print Network [OSTI]

    Gailey, Glenn Andrew

    2013-05-14

    , the western gray whale population face several threats to their future survival. On their only known feeding grounds off the northeastern coast of Sakhalin Island, Russia, anthropogenic activity has increased in the past decade due to oil and gas exploration...

  11. An Acoustic Survey of Beaked Whales at Cross Seamount near Hawaii

    E-Print Network [OSTI]

    McDonald, M A; Hildebrand, John A; Wiggins, S M; Johnston, David W; Polovina, Jeffery J

    2009-01-01

    whales at Cross Seamount near Hawaii (L) Mark A. McDonald a?2570 Dole Street, Honolulu, Hawaii 96822 ?Received 2 Julyfrom Cross Seamount, southwest of Hawaii, revealed sounds

  12. Biomechanics and Energetics in Aquatic and Semiaquatic Mammals: Platypus to Whale*

    E-Print Network [OSTI]

    Fish, Frank

    683 Biomechanics and Energetics in Aquatic and Semiaquatic Mammals: Platypus to Whale* Frank E'principle dominates, from the lessviscous,gravity- dominated terrestrial environment has presented biomechan- ical

  13. An investigation of the roles of geomagnetic and acoustic cues in whale navigation and orientation

    E-Print Network [OSTI]

    Allen, Ann Nichole

    2013-01-01

    Many species of whales migrate annually between high-latitude feeding grounds and low-latitude breeding grounds. Yet, very little is known about how these animals navigate during these migrations. This thesis takes a first ...

  14. Monitoring and Mitigation Alternatives for Protection of North Atlantic Right Whales during Offshore Wind Farm Installation

    SciTech Connect (OSTI)

    Carlson, Thomas J.; Halvorsen, Michele B.; Matzner, Shari; Copping, Andrea E.; Stavole, Jessica

    2012-09-01

    Progress report on defining and determining monitoring and mitigation measures for protecting North Atlantic Right Whales from the effects of pile driving and other activities associated with installation of offshore wind farms.

  15. The Tubercles on Humpback Whales' Flippers: Application of Bio-Inspired Technology

    E-Print Network [OSTI]

    Fish, Frank

    SYMPOSIUM The Tubercles on Humpback Whales' Flippers: Application of Bio-Inspired Technology Frank complex, costly, high-maintenance, and heavy control mechanisms, while improving performance for lifting, skeletal mechanics involved an understanding of architecture, material science and beam theory, while

  16. Shallow and Deep Lunge Feeding of Humpback Whales in Fjords of the West Antarctic Peninsula

    E-Print Network [OSTI]

    Ware, Colin

    1 Shallow and Deep Lunge Feeding of Humpback Whales in Fjords of the West Antarctic Peninsula Colin lunges during which they engulf large volumes of water equal to as much as 70% of their body mass. To understand the kinematics of humpback lunge feeding, we attached high-resolution digital recording tags

  17. Eddies as Offshore Foraging Grounds for Melon-headed Whales (Peponocephala electra)

    E-Print Network [OSTI]

    Hawai'i at Manoa, University of

    Eddies as Offshore Foraging Grounds for Melon- headed Whales (Peponocephala electra) Phoebe, NOAA 5School of Fisheries and Ocean Sciences, University of Alaska Fairbanks and Alaska SeaLife Center eddies occur frequently in the lee of the Hawaiian Islands ­ Formed and sustained by easterly trade winds

  18. Subunit definition and analysis for humpback whale call classification Federica Pace a,*, Frederic Benard b

    E-Print Network [OSTI]

    Chamroukhi, Faicel

    , we propose a new approach for the analysis of humpback whale calls from the North East coast and systematically has become crucial to allow processing large data sets. We propose a new approach for song 2008 and 2009 were segmented using an energy detector with a double threshold and classified

  19. Predicted decline of protected whales based on molecular genetic monitoring of Japanese

    E-Print Network [OSTI]

    Palumbi, Stephen

    of `whale' products purchased from retail markets in Japan and the Republic of (South) Korea during 1993¢rmed the power of molecular methods in monitoring retail markets and pointed to the inadequacy of the current markets C. S. Baker1* , G. M. Lento1 , F. Cipriano2 and S. R. Palumbi2 1 School of Biological Sciences

  20. Winter distribution and abundance of humpback whales (Megaptera novaeangliae) off Northeastern Brazil

    E-Print Network [OSTI]

    Simões-Lopes, Paulo César

    Brazil Alexandre N. Zerbini* , Artur Andriolo+ , Jesuina M. da Rocha# , Paulo César Simões'). The northeastern coast of Brazil was an important whaling ground in the 20th century. Shipboard sighting surveys off northeastern Brazil suggests that the species is reoccupying historical areas of distribution

  1. Common Name Scientific Name Status Critical Habitat in AK? Humpback Whale Megaptera novaeangliae Endangered No

    E-Print Network [OSTI]

    Threatened No Lower Columbia River Coho Salmon* Oncorhynchus kisutch Threatened No Hood Canal Summer Run Chum Lepidochelys olivacea Threatened No Upper Columbia River Spring Chinook Salmon* Oncorhynchus tshawytscha Endangered No Snake River Sockeye Salmon* Oncorhynchus nerka Endangered No WHALES PINNIPEDS REPTILES FISH

  2. Echolocation-based foraging by harbor porpoises and sperm whales, including effects of noise and acoustic propagation

    E-Print Network [OSTI]

    DeRuiter, Stacy L

    2008-01-01

    In this thesis, I provide quantitative descriptions of toothed whale echolocation and foraging behavior, including assessment of the effects of noise on foraging behavior and the potential influence of ocean acoustic ...

  3. The auditory system of the minke whale (Balaenoptera acutorostrata) : a potential fatty sound reception pathway in a mysticete cetacean

    E-Print Network [OSTI]

    Yamato, Maya

    2012-01-01

    Despite widespread concerns about the effects of anthropogenic noise on baleen whales (suborder Mysticeti), we lack basic information about their auditory physiology for comprehensive risk assessments. Hearing ranges and ...

  4. Humpback and Fin Whaling in the Gulf of Maine from 1800 to 1918 RANDALL R. REEVES, TIM D. SMITH, ROBERT L. WEBB, JOOKE ROBBINS, and PHILLIP J. CLAPHAM

    E-Print Network [OSTI]

    Humpback and Fin Whaling in the Gulf of Maine from 1800 to 1918 RANDALL R. REEVES, TIM D. SMITH, ROBERT L. WEBB, JOOKE ROBBINS, and PHILLIP J. CLAPHAM Introduction The Gulf of Maine is an oceanic body is with the Center for Coastal Studies, Provincetown, MA 02657. ABSTRACT--The history of whaling in the Gulf of Maine

  5. Characteristics of the deep scattering layer in the Gulf of Mexico as they relate to sperm whale diving and foraging behavior 

    E-Print Network [OSTI]

    Azzara, Alyson Julie

    2009-05-15

    and studies of sperm whale foraging and diving patterns. During the SWSS 2005 cruise, acoustic volume backscatter data were collected using a 38 kHz ADCP for comparison with XBT, MODIS ocean color data, and whale dive profiles extrapolated from analysis...

  6. JOURNAL OF VIROLOGY, May 2008, p. 50845088 Vol. 82, No. 10 0022-538X/08/$08.00 0 doi:10.1128/JVI.02722-07

    E-Print Network [OSTI]

    Wang, David

    of a captive beluga whale in an aquatic park. A highly divergent coronavirus, tentatively named coronavirus SW1, was identified in liver tissue from the deceased whale. Subsequently, the entire genome of SW1 was sequenced, yielding a genome of 31,686 nucleotides. Phylogenetic analysis revealed SW1 to be a novel virus distantly

  7. Between a Rock and a Hard Place: Habitat Selection in Female-Calf Humpback Whale (Megaptera novaeangliae) Pairs on the Hawaiian Breeding Grounds

    E-Print Network [OSTI]

    2012-01-01

    the North shore of Kauai, Hawaii [55]. In contrast, wherehumpback whales between Kauai and Hawaii: Implications forIsland of Hawaii and the north shore of Kauai, regions that

  8. Distributions of sperm whales along the continental slope in the northwestern and central Gulf of Mexico as determined from an acoustic survey 

    E-Print Network [OSTI]

    Sparks, Troy Daniel

    1997-01-01

    up to 80% of their time on deep dives, and vocalize in a predictable manner while diving, their distributions can be estimated qualitatively using acoustic sampling techniques. Acoustic sperm whale distributions were determined via a passive towed...

  9. Using orbital altimetry and ocean color to characterize habitat of sperm whales in the Gulf of Mexico 

    E-Print Network [OSTI]

    O'Hern, Julia Elizabeth

    2009-05-15

    . Howard Bernd W?rsig Head of Department, Piers Chapman December 2007 Major Subject: Oceanography iii ABSTRACT Using Orbital Altimetry and Ocean Color to Characterize Habitat of Sperm Whales in the Gulf of Mexico. (December 2007... guidance in developing the direction of my research and this manuscript. Dr. Matt Howard provided invaluable instruction in the computer programming necessary to obtain and analyze satellite data, as well as the interpretation of that data. Dr. Bernd W...

  10. Friends of Long Marine Lab's Annual Whale of an Auction, a Benefit for the Seymour Marine Discovery Center, set for Saturday, June 20

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Friends of Long Marine Lab's Annual Whale of an Auction, a Benefit for the Seymour Marine Discovery crucial support for the Seymour Marine Discovery Center, the community education hub at Long Marine Lab in Santa Cruz. Although part of UCSC's marine science campus, the Seymour Center remains primarily self

  11. ENVIRONMENTAL ASSESSMENT CO-MAGEMENT AGREEMENT BETWEEN THE

    E-Print Network [OSTI]

    AND THE COOK INLET MARINE m L COUNCIL FOR THE YEAR 2005 September 8, 2005 Lead Agency: Responsible Official of the Commercial Harvest . 20 4.4 2.2 Effects of the Subsistence Harvest Prlor to 1999 . . . . . 20 4.4.2 3 Effects . . . . . . 25 4.4 2.6 Direct Effects of Commercial Flsherles on CI Beluga Whales . . . . 26 (i) Incidental

  12. SpecieS in the Spotlight: Survive to thrive Recovering threatened and

    E-Print Network [OSTI]

    for taking the time to review this annual report to Congress. The report is important because it documents with renewed commitment and intensified efforts. Starting on May 15, 2015--Endangered Species Day) ·Central California Coast Coho Evolutionarily Significant Unit (ESU) ·Cook Inlet Beluga Whale DPS ·Hawaiian

  13. Ecosystem Scale Acoustic Sensing Reveals Humpback Whale Behavior Synchronous with Herring Spawning Processes and Re-Evaluation Finds No Effect of Sonar on Humpback Song Occurrence in the Gulf of Maine in Fall 2006

    E-Print Network [OSTI]

    Gong, Zheng

    We show that humpback-whale vocalization behavior is synchronous with peak annual Atlantic herring spawning processes in the Gulf of Maine. With a passive, wide-aperture, densely-sampled, coherent hydrophone array towed ...

  14. International interactive

    E-Print Network [OSTI]

    Nielsen, Finn Årup

    and interact with the same visualization. The researchers can be situated anywhere on the Internet. Bibli

  15. Abundance of fin whales in West Greenland in 2007 M.P. HEIDE-JRGENSEN*, K.L. LAIDRE*+, M. SIMON*, M.L. BURT$, D.L. BORCHERS$ AND M. RASMUSSEN#

    E-Print Network [OSTI]

    Laidre, Kristin L.

    ., 2008). A ship-based survey also conducted in 2005 gave a smaller abundance estimate (1,980, 95% CI 913 and too imprecise to be used for generating advice on sustainable takes (IWC, 2005). For continued advice on the sustainability of the harvest in West Greenland it is important to determine if the abundance of fin whales

  16. Interactive Jobs

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformation CurrentHenryInhibitingInteractive Jobs Interactive Jobs To run an interactive

  17. developments. interactive

    E-Print Network [OSTI]

    Jaun, André

    interactive course: ffl web­pages for hyper­linked lecture notes, student exercises and projects, ffl java teachers: ffl public on the web y : lecture notes including the JBONE applet, ffl on demand: source Java

  18. Northern Fur Seals (Callorhinus ursinus) of the Commander Islands: Summer Feeding Trips, Winter Migrations and Interactions with Killer Whales (Orcinus orca) 

    E-Print Network [OSTI]

    Belonovich, Olga Andreevna

    2011-10-21

    The northern fur seal (NFS) population on the Pribilof Islands (PI) is currently declining while the population on the Commander Islands (CI which includes Bering and Medny Islands) is stable. The reasons for the different population trajectories...

  19. Interactive Jobs

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformation CurrentHenryInhibiting IndividualIntegratingInstituteInteractiveInteractive

  20. Kenai Tyonek Kasilof Nikiski Soldotna Salamatof KENAI BELUGA RIVER

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry NaturalPrices1Markets See full2% of domesticIssues inrgyUFields

  1. Kenai Tyonek Kasilof Nikiski Soldotna Salamatof KENAI BELUGA RIVER

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry NaturalPrices1Markets See full2% of domesticIssues

  2. Kenai Tyonek Kasilof Nikiski Soldotna Salamatof KENAI BELUGA RIVER

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry NaturalPrices1Markets See full2% of domesticIssuesSouthern

  3. Interactive Jobs

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformation CurrentHenryInhibiting IndividualIntegratingInstituteInteractive Jobs

  4. Interactive Jobs

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformation CurrentHenryInhibiting IndividualIntegratingInstituteInteractive

  5. Interaction, protection and epidemics

    E-Print Network [OSTI]

    Goyal, Sanjeev; Vigier, Adrien

    2015-03-06

    unique equilibrium: individuals who invest in protection choose to interact more relative to those who do not invest in protection. Changes in the contagiousness of the disease have non-monotonic effects: as a result interaction initially falls...

  6. A Review of Interactions Between Hawaii's Fisheries and Protected Species

    E-Print Network [OSTI]

    lose bait and catch to bottlenose dolphins, rough-toothed dol phins, and Hawaiian monk seals. Trollfish fisheries. 55(2),1993 gered species involved in fishery in teractions are the Hawaiian monk seal, Monachus turtles, seabirds, and monk seals take bait and are known to become hooked, and false killer whales may

  7. Is Gravity an Interaction?

    E-Print Network [OSTI]

    Felix M. Lev

    2010-05-16

    We consider a possibility that gravity is not an interaction but a manifestation of a symmetry based on a Galois field.

  8. Interactivity and Emotion Cinematography

    E-Print Network [OSTI]

    Tomlinson, Bill

    ______________________________________________________________________________ Glorianna Davenport Principal Research Associate Director of Interactive Cinema MIT Media Laboratory Reader______________________________________________________________________________ Thomas Porter Supervising Technical Director Pixar Animation Studios May 1999 #12;TABLE OF CONTENTS: 1

  9. Weak Interaction | Jefferson Lab

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

    Weak Interaction February 22, 2011 Jefferson Lab has an accelerator designed to do incisive medium energy physics. This program is dominated by experiments aimed at developing our...

  10. Nerve-pulse interactions

    SciTech Connect (OSTI)

    Scott, A.C.

    1982-01-01

    Some recent experimental and theoretical results on mechanisms through which individual nerve pulses can interact are reviewed. Three modes of interactions are considered: (1) interaction of pulses as they travel along a single fiber which leads to velocity dispersion; (2) propagation of pairs of pulses through a branching region leading to quantum pulse code transformations; and (3) interaction of pulses on parallel fibers through which they may form a pulse assembly. This notion is analogous to Hebb's concept of a cell assembly, but on a lower level of the neural hierarchy.

  11. Interactive Whiteboards @ Using the Interactive Whiteboards

    E-Print Network [OSTI]

    University of Technology, Sydney

    . Press and hold the power button until it turns GREEN. The IWB now needs to connect to the resident Pen slot Pen tray Power module Keyboard button Right-click button Interactive Whiteboards (IWB) @ UTS is in standby mode, the Power button on the pen tray is unlit. Press the Power button to wake up your

  12. Interactive Holographic Cinema 

    E-Print Network [OSTI]

    Portales, Christopher

    2012-07-16

    HOLOGRAPHIC CINEMA A Thesis by CHRISTOPHER ALBERT PORTALES Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 2012 Major Subject...: Visualization Interactive Holographic Cinema Copyright 2012 Christopher Albert Portales INTERACTIVE HOLOGRAPHIC CINEMA A Thesis by CHRISTOPHER ALBERT PORTALES Submitted to the Office of Graduate...

  13. Elementary particle interactions

    SciTech Connect (OSTI)

    Bugg, W.M.; Condo, G.T.; Handler, T.; Hart, E.L.; Ward, B.F.L.; Close, F.E.; Christophorou, L.G.

    1990-10-01

    This report discusses freon bubble chamber experiments exposed to {mu}{sup +} and neutrinos, photon-proton interactions; shower counter simulations; SLD detectors at the Stanford Linear Collider, and the detectors at the Superconducting Super Collider; elementary particle interactions; physical properties of dielectric materials used in High Energy Physics detectors; and Nuclear Physics. (LSP)

  14. Interactive Virtual Environments Introduction

    E-Print Network [OSTI]

    Petriu, Emil M.

    sensor data or by animation scripts. Human users can interact and directly manipulate objects within Reality Interactive Virtual Reality Virtualized Reality Augmented Reality #12;HUMAN PERCEPTION OF REALITY REAL WORLD / ENVIRONMENT HUMAN (sentient living animal able of sensible reasoning) #12;Real

  15. MARKERAUGMENTED ROBOTENVIRONMENT INTERACTION

    E-Print Network [OSTI]

    Mali, Amol D.

    MARKER­AUGMENTED ROBOT­ENVIRONMENT INTERACTION Amol Dattatraya Mali Electrical Engg. & Computer Science University of Wisconsin, Milwaukee, WI 53211 mali@miller.cs.uwm.edu Abstract There has been

  16. Human-machine interactions

    DOE Patents [OSTI]

    Forsythe, J. Chris (Sandia Park, NM); Xavier, Patrick G. (Albuquerque, NM); Abbott, Robert G. (Albuquerque, NM); Brannon, Nathan G. (Albuquerque, NM); Bernard, Michael L. (Tijeras, NM); Speed, Ann E. (Albuquerque, NM)

    2009-04-28

    Digital technology utilizing a cognitive model based on human naturalistic decision-making processes, including pattern recognition and episodic memory, can reduce the dependency of human-machine interactions on the abilities of a human user and can enable a machine to more closely emulate human-like responses. Such a cognitive model can enable digital technology to use cognitive capacities fundamental to human-like communication and cooperation to interact with humans.

  17. Relativistic Laser-Matter Interactions

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

    Relativistic Laser-Matter Interactions Relativistic Laser-Matter Interactions Enabling the next generation of intense particle accelerators Contact Juan Fernandez (505) 667-6575...

  18. Surprising Quasiparticle Interactions in Graphene

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

    Surprising Quasiparticle Interactions in Graphene Surprising Quasiparticle Interactions in Graphene Print Wednesday, 31 October 2007 00:00 Until now, the world's electronics have...

  19. Achromatic Interaction Point Design

    SciTech Connect (OSTI)

    Guimei Wang,, Yaroslav Derbenev, S.Alex Bogacz, P. Chevtsov, Andre Afanaciev, Charles Ankenbrandt, Valentin Ivanov, Rolland P. Johnson

    2009-05-01

    Designers of high-luminosity energy-frontier muon colliders must provide strong beam focusing in the interaction regions. However, the construction of a strong, aberration-free beam focus is difficult and space consuming, and long straight sections generate an off-site radiation problem due to muon decay neutrinos that interact as they leave the surface of the earth. Without some way to mitigate the neutrino radiation problem, the maximum c.m. energy of a muon collider will be limited to about 3.5 TeV. A new concept for achromatic low beta design is being developed, in which the interaction region telescope and optical correction elements, are installed in the bending arcs. The concept, formulated analytically, combines space economy, a preventative approach to compensation for aberrations, and a reduction of neutrino flux concentration. An analytical theory for the aberration-free, low beta, spatially compact insertion is being developed.

  20. MARINE MAMMAL SCIENCE, 29(3): 555562 (July 2013) C 2012 by the Society for Marine Mammalogy

    E-Print Network [OSTI]

    Stockin, Karen

    : 10.1111/j.1748-7692.2012.00582.x Rare observations of false killer whales (Pseudorca crassidens, the driving factors behind these interactions are often difficult to ascertain. False killer whales (Pseudorca-mail:jzaeschmar@hotmail.com). 555 #12;556 MARINE MAMMAL SCIENCE, VOL. 29, NO. 3, 2013 Figure 1. A false killer whale (Pseudorca

  1. Elastic Interactions of Cells

    E-Print Network [OSTI]

    U. S. Schwarz; S. A. Safran

    2002-01-08

    Biological cells in soft materials can be modeled as anisotropic force contraction dipoles. The corresponding elastic interaction potentials are long-ranged ($\\sim 1/r^3$ with distance $r$) and depend sensitively on elastic constants, geometry and cellular orientations. On elastic substrates, the elastic interaction is similar to that of electric quadrupoles in two dimensions and for dense systems leads to aggregation with herringbone order on a cellular scale. Free and clamped surfaces of samples of finite size introduce attractive and repulsive corrections, respectively, which vary on the macroscopic scale. Our theory predicts cell reorientation on stretched elastic substrates.

  2. Gaze-augmented Manual Interaction

    E-Print Network [OSTI]

    Reiterer, Harald

    ) pointing. Proc. CHI, ACM Press ( ), - . Fig. 1: Interacting via gaze and gestures on a 221" Powerwall

  3. Nucleon-nucleon interactions

    SciTech Connect (OSTI)

    Wiringa, R.B.

    1996-12-31

    Nucleon-nucleon interactions are at the heart of nuclear physics, bridging the gap between QCD and the effective interactions appropriate for the shell model. We discuss the current status of {ital NN} data sets, partial-wave analyses, and some of the issues that go into the construction of potential models. Our remarks are illustrated by reference to the Argonne {ital v}{sub 18} potential, one of a number of new potentials that fit elastic nucleon-nucleon data up to 350 MeV with a {Chi}{sup 2} per datum near 1. We also discuss the related issues of three-nucleon potentials, two-nucleon charge and current operators, and relativistic effects. We give some examples of calculations that can be made using these realistic descriptions of {ital NN} interactions. We conclude with some remarks on how our empirical knowledge of {ital NN} interactions may help constrain models at the quark level, and hence models of nucleon structure.

  4. Electron: Cluster interactions

    SciTech Connect (OSTI)

    Scheidemann, A.A.; Kresin, V.V.; Knight, W.D.

    1994-02-01

    Beam depletion spectroscopy has been used to measure absolute total inelastic electron-sodium cluster collision cross sections in the energy range from E {approximately} 0.1 to E {approximately} 6 eV. The investigation focused on the closed shell clusters Na{sub 8}, Na{sub 20}, Na{sub 40}. The measured cross sections show an increase for the lowest collision energies where electron attachment is the primary scattering channel. The electron attachment cross section can be understood in terms of Langevin scattering, connecting this measurement with the polarizability of the cluster. For energies above the dissociation energy the measured electron-cluster cross section is energy independent, thus defining an electron-cluster interaction range. This interaction range increases with the cluster size.

  5. Deep Inelastic Neutrino Interactions

    E-Print Network [OSTI]

    S. Kretzer; M. H. Reno

    2003-06-30

    Understanding neutrino interactions is an important task in searches for neutrino oscillations; e.g. the nu_{mu} -> nu_{tau} oscillation hypothesis will be tested through nu_{tau} production of tau in long-baseline experiments as well as underground neutrino telescopes. An anomaly in the deep inelastic interaction of neutrinos has recently been observed by the NuTeV collaboration -- resulting in a measured weak mixing angle sin^2 Theta_{W} that differs by ~ 3 sigma from the standard model expectation. In this contribution to the proceedings of NUINT02, we summarize results on the NLO neutrino structure functions and cross sections in which charm quark mass and target mass effects in the collinear approximation are included.

  6. AGNs and galaxy interactions

    E-Print Network [OSTI]

    M. Sol Alonso; Diego G. Lambas; Patricia Tissera; Georgina Coldwell

    2007-01-08

    We perform a statistical analysis of AGN host characteristics and nuclear activity for AGNs in pairs and without companions. Our study concerns a sample of AGNs derived from the SDSS-DR4 data by Kauffmann et al (2003) and pair galaxies obtained from the same data set by Alonso et al. (2006). An eye-ball classification of images of 1607 close pairs ($r_p<25$ kpc $h^{-1}$, $\\Delta V<350$ km $s^{-1}$) according to the evidence of interaction through distorted morphologies and tidal features provides us with a more confident assessment of galaxy interactions from this sample. We notice that, at a given luminosity or stellar mass content, the fraction of AGNs is larger for pair galaxies exhibiting evidence for strong interaction and tidal features which also show sings of strong star formation activity. Nevertheless, this process accounts only for a $\\sim 10%$ increase of the fraction of AGNs. As in previous works, we find AGN hosts to be redder and with a larger concentration morphological index than non-AGN galaxies. This effect does not depend whether AGN hosts are in pairs or in isolation. The OIII luminosity of AGNs with strong interaction features is found to be significantly larger than that of other AGNs, either in pairs or in isolation. Estimations of the accretion rate, $L[OIII]/M_{BH}$, show that AGNs in merging pairs are actively feeding their black holes, regardless of their stellar masses. We also find that the luminosity of the companion galaxy seems to be a key parameter in the determination of the black hole activity. At a given host luminosity, both the OIII luminosity and the $L[OIII]/M_{BH}$ are significantly larger in AGNs with a bright companion ($M_r < -20$) than otherwise.

  7. ELEMENTARY PARTICLE INTERACTIONS

    SciTech Connect (OSTI)

    EFREMENKO, YURI; HANDLER, THOMAS; KAMYSHKOV, YURI; SIOPSIS, GEORGE; SPANIER, STEFAN

    2013-07-30

    The High-Energy Elementary Particle Interactions group at UT during the last three years worked on the following directions and projects: Collider-based Particle Physics; Neutrino Physics, particularly participation in “NO?A”, “Double Chooz”, and “KamLAND” neutrino experiments; and Theory, including Scattering amplitudes, Quark-gluon plasma; Holographic cosmology; Holographic superconductors; Charge density waves; Striped superconductors; and Holographic FFLO states.

  8. Web Interactions A Dissertation Presented

    E-Print Network [OSTI]

    Strickland, Stevie

    Web Interactions A Dissertation Presented by Paul Thorsen Graunke to The College of Computer Thorsen Graunke ALL RIGHTS RESERVED #12; ii Web Interactions by Paul Thorsen Graunke ABSTRACT that exhibit the same exibility as Web dialogues. A foundational model of Web interactions pro- vides

  9. Interactive storytelling engines 

    E-Print Network [OSTI]

    Ong, Teong Joo

    2006-10-30

    , writing spaces still mimic these age old, two dimensional (2D) static media. For example, popular word-processing suites such as Microsoft?s Office and Lotus Smart-suite are modeled on the writing spaces spanned by paper or similar media that have been... in use since the dawn of human civilization. Sev- eral researchers have opened new horizons to this art form by experimenting with differ- ent ways of telling a story. Well-known examples include non-linear storytelling [14] and interactive storytelling...

  10. Interactive (login) Nodes

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformation CurrentHenryInhibiting IndividualIntegratingInstitute Interactions

  11. Non standard neutrino interactions

    E-Print Network [OSTI]

    Miranda, O G

    2015-01-01

    Neutrino oscillations have become well-known phenomenon; the measurements of neutrino mixing angles and mass squared differences are continuously improving. Future oscillation experiments will eventually determine the remaining unknown neutrino parameters, namely, the mass ordering, normal or inverted, and the CP-violating phase. On the other hand, the absolute mass scale of neutrinos could be probed by cosmological observations, single beta decay as well as by neutrinoless double beta decay experiments. Furthermore, the last one may shed light on the nature of neutrinos, Dirac or Majorana, by measuring the effective Majorana mass of neutrinos. However, the neutrino mass generation mechanism remains unknown. A well-motivated phenomenological approach to search for new physics, in the neutrino sector, is that of non-standard interactions. In this short review, the current constraints in this picture, as well as the perspectives from future experiments, are discussed.

  12. Theoretical studies of molecular interactions

    SciTech Connect (OSTI)

    Lester, W.A. Jr. [Univ. of California, Berkeley (United States)

    1993-12-01

    This research program is directed at extending fundamental knowledge of atoms and molecules including their electronic structure, mutual interaction, collision dynamics, and interaction with radiation. The approach combines the use of ab initio methods--Hartree-Fock (HF) multiconfiguration HF, configuration interaction, and the recently developed quantum Monte Carlo (MC)--to describe electronic structure, intermolecular interactions, and other properties, with various methods of characterizing inelastic and reaction collision processes, and photodissociation dynamics. Present activity is focused on the development and application of the QMC method, surface catalyzed reactions, and reorientation cross sections.

  13. ANTswers: an interactive library FAQ

    E-Print Network [OSTI]

    Kane, Danielle A.

    2105-01-01

    ANTswers: an interactive library FAQ Danielle Kane, Researchand Service Innovation, UCI Libraries ALA Annual 2015 – Sanquestions about the UCI Libraries but to also respond to

  14. Surprising Quasiparticle Interactions in Graphene

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

    Surprising Quasiparticle Interactions in Graphene Print Until now, the world's electronics have been dominated by silicon, whose properties, while excellent, significantly limit...

  15. A Universe Without Weak Interactions

    E-Print Network [OSTI]

    Harnik, Roni; Kribs, Graham D.; Perez, Gilad

    2006-01-01

    stars in the Weakless Universe begin fusion by the fastof obtaining a habitable universe. Acknowledgments We11795, hep-ph/0604027 A Universe Without Weak Interactions

  16. Hadronic interactions and nuclear physics

    E-Print Network [OSTI]

    Silas R. Beane

    2008-12-05

    I give an overview of efforts in the last year to calculate interactions among hadrons using lattice QCD. Results discussed include the extraction of low-energy phase shifts and three-body interactions, and the study of pion and kaon condensation. A critical appraisal is offered of recent attempts to calculate nucleon-nucleon and nucleon-hyperon potentials on the lattice.

  17. Water wave interactions Walter Craig

    E-Print Network [OSTI]

    Thomann, Laurent

    Water wave interactions Walter Craig Department of Mathematics & Statistics ´EquationsMaster University) Water wave interactions 25 janvier 2011 1 / 34 #12;Joint work with: Philippe Guyenne University, Killam Research Fellows Program, Fields Institute Walter Craig (McMaster University) Water wave

  18. HIERARCHICAL STORAGE SYSTEMS FOR INTERACTIVE

    E-Print Network [OSTI]

    Chan, Shueng-Han Gary

    HIERARCHICAL STORAGE SYSTEMS FOR INTERACTIVE VIDEO­ON­DEMAND Shueng­Han Gary Chan and Fouad A; Hierarchical Storage Systems for Interactive Video­On­Demand Shueng­Han Gary Chan and Fouad A. Tobagi Technical­9040 pubs@shasta.stanford.edu Abstract On­demand video servers based on hierarchical storage systems

  19. Decoherence of interacting Majorana modes

    E-Print Network [OSTI]

    H. T. Ng

    2015-07-31

    We study the decoherence of Majorana modes of a fermion chain, where the fermions interact with their nearest neighbours. We investigate the effect of dissipation and dephasing on the Majorana modes of a fermionic chain. The dissipative and dephasing noises induce the non-parity- and parity-preserving transitions between the eigenstates of the system, respectively. Therefore, these two types of noises lead to the different decoherence mechanisms. In each type of noise, we discuss the low- and high-frequency regimes to describe the different environments. We numerically calculate the dissipation and dephasing rates in the presence of long-range interactions. We find that the decoherence rate of interacting Majorana modes is different to that of non-interacting modes. We show the examples that the long-range interactions can reduce the decoherence rate. It is advantageous to the potential applications of quantum information processing.

  20. Perturbative gadgets without strong interactions

    E-Print Network [OSTI]

    Yudong Cao; Daniel Nagaj

    2014-08-25

    Perturbative gadgets are used to construct a quantum Hamiltonian whose low-energy subspace approximates a given quantum $k$-body Hamiltonian up to an absolute error $\\epsilon$. Typically, gadget constructions involve terms with large interaction strengths of order $\\text{poly}(\\epsilon^{-1})$. Here we present a 2-body gadget construction and prove that it approximates a target many-body Hamiltonian of interaction strength $\\gamma = O(1)$ up to absolute error $\\epsilon\\ll\\gamma$ using interactions of strength $O(\\epsilon)$ instead of the usual inverse polynomial in $\\epsilon$. A key component in our proof is a new condition for the convergence of the perturbation series, allowing our gadget construction to be applied in parallel on multiple many-body terms. We also show how to apply this gadget construction for approximating 3- and $k$-body Hamiltonians. The price we pay for using much weaker interactions is a large overhead in the number of ancillary qubits, and the number of interaction terms per particle, both of which scale as $O(\\text{poly}(\\epsilon^{-1}))$. Our strong-from-weak gadgets have their primary application in complexity theory (QMA hardness of restricted Hamiltonians, a generalized area law counterexample, gap amplification), but could also motivate practical implementations with many weak interactions simulating a much stronger quantum many-body interaction.

  1. Groundwater Report Goes Online, Interactive

    Broader source: Energy.gov [DOE]

    RICHLAND, Wash. – EM’s Richland Operations Office (RL) has moved its 1,200-page annual report on groundwater monitoring to a fully online and interactive web application.

  2. Interaction engineering for environmental probing

    E-Print Network [OSTI]

    M. Paternostro; S. Bose; M. S. Kim

    2007-06-04

    We study the conditions for the probing of an environment affecting one party of a bipartite system of interacting objects by measurements operated only on the other element. We show that entanglement plays no crucial role in such an environment-characterization. On the other hand, if an interaction is established between the two parties, information can be reliably gathered. This result holds for both discrete and continuous variables and helps in the interpretation of recent experiments addressing the properties of mesoscopic objects.

  3. Interaction engineering for environmental probing

    E-Print Network [OSTI]

    Paternostro, M; Kim, M S

    2007-01-01

    We study the conditions for the probing of an environment affecting one party of a bipartite system of interacting objects by measurements operated only on the other element. We show that entanglement plays no crucial role in such an environment-characterization. On the other hand, if an interaction is established between the two parties, information can be reliably gathered. This result holds for both discrete and continuous variables and helps in the interpretation of recent experiments addressing the properties of mesoscopic objects.

  4. Height fluctuations in interacting dimers

    E-Print Network [OSTI]

    Alessandro Giuliani; Vieri Mastropietro; Fabio Lucio Toninelli

    2015-05-05

    We consider a non-integrable model for interacting dimers on the two-dimensional square lattice. Configurations are perfect matchings of $\\mathbb Z^2$, i.e. subsets of edges such that each vertex is covered exactly once ("close-packing" condition). Dimer configurations are in bijection with discrete height functions, defined on faces $\\boldsymbol{\\xi}$ of $\\mathbb Z^2$. The non-interacting model is "integrable" and solvable via Kasteleyn theory; it is known that all the moments of the height difference $h_{\\boldsymbol{\\xi}}-h_{\\boldsymbol{\\eta}}$ converge to those of the massless Gaussian Free Field (GFF), asymptotically as $|{\\boldsymbol{\\xi}}-{\\boldsymbol{\\eta}}|\\to \\infty$. We prove that the same holds for small non-zero interactions, as was conjectured in the theoretical physics literature. Remarkably, dimer-dimer correlation functions are instead not universal and decay with a critical exponent that depends on the interaction strength. Our proof is based on an exact representation of the model in terms of lattice interacting fermions, which are studied by constructive field theory methods. In the fermionic language, the height difference $h_{\\boldsymbol{\\xi}}-h_{\\boldsymbol{\\eta}}$ takes the form of a non-local operator, consisting of a sum of monomials along an {\\it arbitrary} path connecting $\\boldsymbol{\\xi}$ and $\\boldsymbol{\\eta}$. As in the non-interacting case, this path-independence plays a crucial role in the proof.

  5. Modeling Web Interactions Paul Graunke (Northeastern University),

    E-Print Network [OSTI]

    Tobin-Hochstadt, Sam

    Modeling Web Interactions Paul Graunke (Northeastern University), Robert Bruce Findler (University) Abstract. Programmers confront a minefield when they design interactive Web programs. Web interactions take place via Web browsers. With browsers, con- sumers can whimsically navigate among the various stages

  6. Interaction of Radiation with Matter Electrons

    E-Print Network [OSTI]

    Massey, Thomas N.

    Module 2 Interaction of Radiation with Matter · Gammas · Electrons · Charged Particles · Neutron of mass. · Energy from radiation only deposited if it interacts with the material. · Only the amount;Pair Production #12;Gamma Interaction with Water #12;http://physics

  7. Name________________________________________ Blue Whale Skeleton: Observations and Questions

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    scooping mouth, nostrils (blowholes) up top to ease breathing, large hyoid bones for tongue attachment, tall dorsal processes for muscle attachment to power fluke, added chevron bones for muscle attachment/rigid in front while flexible, powered in rear to move through water efficiently. Large, gaping mouth to catch

  8. November 2001 HUMPBACK WHALE (Megaptera novaeangliae)

    E-Print Network [OSTI]

    subpopulations, fidelity to which is determined matrilineally (Cla pham and Mayo 1 987). G enetic analysis

  9. Occurrence and group characteristics of minke whales,

    E-Print Network [OSTI]

    , 1991; Wada et aI., 1991) have cast some doubt on the long-held belief that all populations constitute, an elongated glacial feature of sand and gravel approximately 25 kIn in length, which has a minimum depth of 18

  10. espite the International Whaling Commission's (IWC) moratorium

    E-Print Network [OSTI]

    Gerber, Leah R.

    be remarkably successful. Emissions trading markets for air pollutants such as sulphur dioxide and nitrogen

  11. Structural Interactions within Lithium Salt Solvates: Acyclic...

    Office of Scientific and Technical Information (OSTI)

    Structural Interactions within Lithium Salt Solvates: Acyclic Carbonates and Esters Citation Details In-Document Search Title: Structural Interactions within Lithium Salt Solvates:...

  12. Bridging Research Interactions Through Collaborative Development...

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

    Bridging Research Interactions Through Collaborative Development Grants in Energy Bridging Research Interactions Through Collaborative Development Grants in Energy The DOE Bridging...

  13. Community detection for interaction networks

    E-Print Network [OSTI]

    Crane, Harry

    2015-01-01

    In many applications, it is common practice to obtain a network from interaction counts by thresholding each pairwise count at a prescribed value. Our analysis calls attention to the dependence of certain methods, notably Newman--Girvan modularity, on the choice of threshold. Essentially, the threshold either separates the network into clusters automatically, making the algorithm's job trivial, or erases all structure in the data, rendering clustering impossible. By fitting the original interaction counts as given, we show that minor modifications to classical statistical methods outperform the prevailing approaches for community detection from interaction datasets. We also introduce a new hidden Markov model for inferring community structures that vary over time. We demonstrate each of these features on three real datasets: the karate club dataset, voting data from the U.S.\\ Senate (2001--2003), and temporal voting data for the U.S. Supreme Court (1990--2004).

  14. Interaction Proxemics: Combining Physical Spaces for Seamless Gesture Interaction

    E-Print Network [OSTI]

    - teraction. While applications usually focus on one particular input technology, we set out to adjust combines technology-transparent inter- action spaces across 4 interaction zones: touch, fine. Windows 8). Today, taps, pan, and pinch gestures are established touch gestures that users expect from

  15. Self-Interacting Dark Matter

    E-Print Network [OSTI]

    Benjamin D. Wandelt; Romeel Dave; Glennys R. Farrar; Patrick C. McGuire; David N. Spergel; Paul J. Steinhardt

    2000-06-28

    Spergel and Steinhardt have recently proposed the concept of dark matter with strong self-interactions as a means to address numerous discrepancies between observations of dark matter halos on subgalactic scales and the predictions of the standard collisionless dark matter picture. We review the motivations for this scenario and discuss some recent, successful numerical tests. We also discuss the possibility that the dark matter interacts strongly with ordinary baryonic matter, as well as with itself. We present a new analysis of the experimental constraints and re-evaluate the allowed range of cross-section and mass.

  16. Hydrodynamic interactions in colloidal crystals

    E-Print Network [OSTI]

    Weeber, Rudolf

    2011-01-01

    In dense colloids it is commonly assumed that hydrodynamic interactions do not play a role. However, a found theoretical quantification is often missing. We present computer simulations that are motivated by experiments where a large colloidal particle is dragged through a colloidal crystal. To qualify the influence of long-ranged hydrodynamics, we model the setup by conventional Langevin dynamics simulations and by an improved scheme with limited hydrodynamic interactions. This scheme significantly improves our results and allows to show that hydrodynamics strongly impacts on the development of defects, the crystal regeneration as well as on the jamming behavior.

  17. UBIQUITOUS COMPUTING AND INTERACTION Kaj Grnbk, Professor,

    E-Print Network [OSTI]

    Equipment (Kinesthetic Interaction) > PosLogistics (Positioning and Logistics) > VPP4SGR ­ SmartGrid project

  18. Interacting new generalized Chaplygin gas

    E-Print Network [OSTI]

    Mubasher Jamil

    2009-10-20

    We have presented a model in which the new generalized Chaplygin gas interacts with matter. We find that there exists a stable scaling solution at late times in the evolution of the universe. Moreover, the phantom crossing scenario is observed in this model.

  19. Interaction in the dark sector

    E-Print Network [OSTI]

    Sergio del Campo; Ramon Herrera; Diego Pavon

    2015-07-01

    It may well happen that the two main components of the dark sector of the Universe, dark matter and dark energy, do not evolve separately but interact nongravitationally with one another. However, given our current lack of knowledge on the microscopic nature of these two components there is no clear theoretical path to determine their interaction. Yet, over the years, phenomenological interaction terms have been proposed on mathematical simplicity and heuristic arguments. In this paper, based on the likely evolution of the ratio between the energy densities of these dark components, we lay down reasonable criteria to obtain phenomenological, useful, expressions of the said term independent of any gravity theory. We illustrate this with different proposals which seem compatible with the known evolution of the Universe at the background level. Likewise, we show that two possible degeneracies with noninteracting models are only apparent as they can be readily broken at the background level. Further, we analyze some interaction terms that appear in the literature.

  20. Digital Soil Mapping: Interactions with

    E-Print Network [OSTI]

    Grunwald, Sabine

    Chapter 21 Digital Soil Mapping: Interactions with and Applications for Hydropedology J.A. Thompson,1, * S. Roecker,2 S. Grunwald3 and P.R. Owens4 ABSTRACT Spatial information on soils, particularly hydrologic and hydromorphic soil properties, is used to understand and assess soil water retention, flooding

  1. Grid Interaction Technical Team Roadmap

    SciTech Connect (OSTI)

    2013-06-01

    The mission of the Grid Interaction Technical Team (GITT) is to support a transition scenario to large scale grid-connected vehicle charging with transformational technology, proof of concept and information dissemination. The GITT facilitates technical coordination and collaboration between vehicle-grid connectivity and communication activities among U.S. DRIVE government and industry partners.

  2. Introduction to Interactive Web Design

    E-Print Network [OSTI]

    Hickey, Timothy J.

    Introduction to Interactive Web Design Timothy J. Hickey Associate Professor of Computer Science . . . . . . . . . . . . . . . . 17 1.4 Web Browsers and Servers . . . . . . . . . . . . . . . . . . . . . . 17 1.5 URLs and Domain . . . . . . . . . . . . . . . . . . . . . . . . . . 22 I Static Web Site Design 23 2 HTML 27 2.1 Simple HTML elements

  3. Specificity of Molecular Interactions in Transient ProteinProtein Interaction Interfaces

    E-Print Network [OSTI]

    Lee, Doheon

    ¼¼C interaction, cationÁÁÁanion interaction, ami- neÁÁÁamine interaction, and amineÁÁÁcation interac- tion. The amine ÁÁÁ amine and amineÁÁÁcation interaction give a minor contribution to the classification accu, and hydroxyl-carbonyl interaction, are also investigated. Analyzing the structural orientations of the p

  4. Strongly interacting parton matter equilibration

    SciTech Connect (OSTI)

    Ozvenchuk, V.; Linnyk, O.; Bratkovskaya, E.; Gorenstein, M.; Cassing, W.

    2012-07-15

    We study the kinetic and chemical equilibration in 'infinite' parton matter within the Parton-Hadron-String Dynamics transport approach. The 'infinite' matter is simulated within a cubic box with periodic boundary conditions initialized at different energy densities. Particle abundances, kinetic energy distributions, and the detailed balance of the off-shell quarks and gluons in the strongly-interacting quarkgluon plasma are addressed and discussed.

  5. Structural Interactions in Spatial Panels

    E-Print Network [OSTI]

    Bhattacharjee, Arnab; Holly, Sean

    , the ele- ments of this matrix represent the direction and strength of spillovers between each pair of units. Alternatively, multifactor approaches which assume cross section dependence can be explained by a …nite number of unobserved com- mon factors... on an application to cross-member interactions within a committee setting. The idea behind spatial weights matrix is that there are spillover e¤ects across the economic agents because of spatial or other forms of local cross section dependence. Such a matrix, W...

  6. Interactive proofs April 12, 2014

    E-Print Network [OSTI]

    Babai, László

    :10.1145/103418.103428. [141] L´aszl´o Babai. Transparent proofs and limits to approximation. In Proc] L´aszl´o Babai. Transparent proofs. FOCUS (MAA Newsletter), 12(3):1­2, June 1992. [123] L´aszl´o Babai. Bounded round interactive proofs in finite groups. SIAM J. Discrete Math., 5(1):88­111, 1992. doi

  7. Surprising Quasiparticle Interactions in Graphene

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorking With Livermore NationalSurprising Quasiparticle Interactions

  8. Weak interactions at the SSC

    SciTech Connect (OSTI)

    Chanowitz, M.S.

    1986-03-01

    Prospects for the study of standard model weak interactions at the SSC are reviewed, with emphasis on the unique capability of the SSC to study the mechanism of electroweak symmetry breaking whether the associated new quanta are at the TeV scale or higher. Symmetry breaking by the minimal Higgs mechanism and by related strong interaction dynamical variants is summarized. A set of measurements is outlined that would calibrate the proton structure functions and the backgrounds to new physics. The ability to measure the three weak gauge boson vertex is found to complement LEP II, with measurements extending to larger Q/sup 2/ at a comparable statistical level in detectable decays. B factory physics is briefly reviewed as one example of a possible broad program of high statistics studies of sub-TeV scale phenomena. The largest section of the talk is devoted to the possible manifestations of symmetry breaking in the WW and ZZ production cross sections. Some new results are presented bearing on the ability to detect high mass WW and ZZ pairs. The principal conclusion is that although nonstandard model scenarios are typically more forgiving, the capability to study symmetry breaking in the standard model (and in related strong interaction dynamical variants) requires achieving the SSC design goals of ..sqrt.. s,L = 40Tev, 10/sup 33/cm/sup -2/sec/sup -1/. 28 refs., 5 figs.

  9. Measuring the Monitoring User Interactive Experiences on Franklin Interactive Nodes

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass map shines light on dark matter By SarahMODELING CLOUD1 H( 7MeasurementsInteractive

  10. Introduction Counterpropagating interactions Numerical methods Co-propagating interactions A result on energy transfer Solitary water wave interactions

    E-Print Network [OSTI]

    Craig, Walter

    on energy transfer Solitary water wave interactions Walter Craig Department of Mathematics & Statistics (energy loss) and S (amplitude change). Walter Craig McMaster University Solitary wave interactions #12 (energy loss) and S (amplitude change). Walter Craig McMaster University Solitary wave interactions #12

  11. Interactive data narrative : designing for public engagement

    E-Print Network [OSTI]

    Craig, Heather (Heather Hult)

    2015-01-01

    Interactive data narrative, or the crafting of interactive online stories based upon new or existing data, has grown dramatically over the last several years. Data is increasingly available through such mechanisms as ...

  12. Gene-environment interactions in genetic epidemiology 

    E-Print Network [OSTI]

    Spinka, Christine Marie

    2005-02-17

    Gene-environment interactions are an area of increasing interest in complex hu- man diseases. The first step in any study of the interactions between genes and the environment involves identifying genes which influence ...

  13. Interactive eshopping experience: an empirical investigation 

    E-Print Network [OSTI]

    Mahfouz, Ahmed Yousry Mohamed

    2005-02-17

    effect on flow's cognitive enjoyment component. High interactivity level sites moderately increased cognitive enjoyment more than low interactivity level sites did. Eshopping experience strongly and positively influenced flow experience in terms...

  14. HYDROGEN EFFECTS ON THE INTERACTION BETWEEN DISLOCATIONS

    E-Print Network [OSTI]

    Ferreira, Paulo J.

    HYDROGEN EFFECTS ON THE INTERACTION BETWEEN DISLOCATIONS P. J. FERREIRA{, I. M. ROBERTSON and H. K of hydrogen on the interaction between dislocations and other elastic centers (impur- ity atoms, the presence of hydrogen was observed to reduce the elastic interactions between obstacles and perfect

  15. Climate change projections and stratospheretroposphere interaction

    E-Print Network [OSTI]

    Wirosoetisno, Djoko

    Climate change projections and stratosphere­troposphere interaction Article Accepted Version Scaife change projections and stratosphere­troposphere interaction. Climate Dynamics, 38 (9-10). pp. 2089 Climate Change Projections and Stratosphere-Troposphere Interaction Adam A. Scaife*,1 , Thomas Spangehl2

  16. Drug-Target Interaction Predicates Combining Similarities

    E-Print Network [OSTI]

    Daume III, Hal

    Drug-Target Interaction Predicates DataSet Combining Similarities Collective Inference Collective Inference and Multi-Relational Learning for Drug­Target Interaction Prediction Shobeir Fakhraei1, Bert Huang1 and Lise Getoor1,2 Poly-pharmacology Drug Repurposing Drug-Target Interaction Network Studies

  17. Interacting Induced Dark Energy Model

    E-Print Network [OSTI]

    Bahrehbakhsh, Amir F

    2016-01-01

    Similar to the idea of the brane world scenarios, but based on the approach of the induced matter theory, for a non--vacuum five--dimensional version of general relativity, we propose a model in which the conventional matter sources considered as all kind of the matter (the baryonic and dark) and the induced terms emerging from the extra dimension supposed to be as dark energy. Then we investigate the FLRW type cosmological equations and illustrate that the model is capable to explain respectively the deceleration and then acceleration eras of the universe expansion with an interacting term between the matter and dark energy.

  18. Stochastic pump of interacting particles

    E-Print Network [OSTI]

    Debasish Chaudhuri; Abhishek Dhar

    2010-12-28

    We consider the overdamped motion of Brownian particles, interacting via particle exclusion, in an external potential that varies with time and space. We show that periodic potentials that maintain specific position-dependent phase relations generate time-averaged directed current of particles. We obtain analytic results for a lattice version of the model using a recently developed perturbative approach. Many interesting features like particle-hole symmetry, current reversal with changing density, and system-size dependence of current are obtained. We propose possible experiments to test our predictions.

  19. Surprising Quasiparticle Interactions in Graphene

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorking With Livermore NationalSurprising Quasiparticle Interactions in

  20. Compact submanifolds supporting singular interactions

    SciTech Connect (OSTI)

    Kaynak, Burak Tevfik Teoman Turgut, O.

    2013-12-15

    A quantum particle moving under the influence of singular interactions on embedded surfaces furnish an interesting example from the spectral point of view. In these problems, the possible occurrence of a bound-state is perhaps the most important aspect. Such systems can be introduced as quadratic forms and generically they do not require renormalization. Yet an alternative path through the resolvent is also beneficial to study various properties. In the present work, we address these issues for compact surfaces embedded in a class of ambient manifolds. We discover that there is an exact bound state solution written in terms of the heat kernel of the ambient manifold for a range of coupling strengths. Moreover, we develop techniques to estimate bounds on the ground state energy when several surfaces, each of which admits a bound state solution, coexist. -- Highlights: •Schrödinger operator with singular interactions supported on compact submanifolds. •Exact bound-state solution in terms of the heat kernel of the ambient manifold. •Generalization of the variational approach to a collection of submanifolds. •Existence of a lower bound for a unique ground state energy.

  1. Whither the whale shark wanders: Tools and methods for modelling whale shark movement

    E-Print Network [OSTI]

    Wickham, Charlotte Victoria

    2011-01-01

    location (often near an equinox). Tags that only managed tolocations for the 15 sharks. Equinoxes are marked with greyof the two circles. At the equinox, when the length of night

  2. CO2 interaction with geomaterials.

    SciTech Connect (OSTI)

    Guthrie, George D. (U.S. Department of Energy, Pittsburgh, PA); Al-Saidi, Wissam A. (University of Pittsburgh, Pittsburgh, PA); Jordan, Kenneth D. (University of Pittsburgh, Pittsburgh, PA); Voora, Vamsee, K. (University of Pittsburgh, Pittsburgh, PA); Romanov, Vyacheslav N. (U.S. Department of Energy, Pittsburgh, PA); Lopano, Christina L (U.S. Department of Energy, Pittsburgh, PA); Myshakin, Eugene M. (URS Corporation, Pittsburgh, PA); Hur, Tae Bong (University of Pittsburgh, Pittsburgh, PA); Warzinski, Robert P. (U.S. Department of Energy, Pittsburgh, PA); Lynn, Ronald J. (URS Corporation, Pittsburgh, PA); Howard, Bret H. (U.S. Department of Energy, Pittsburgh, PA); Cygan, Randall Timothy

    2010-09-01

    This work compares the sorption and swelling processes associated with CO2-coal and CO2-clay interactions. We investigated the mechanisms of interaction related to CO2 adsortion in micropores, intercalation into sub-micropores, dissolution in solid matrix, the role of water, and the associated changes in reservoir permeability, for applications in CO2 sequestration and enhanced coal bed methane recovery. The structural changes caused by CO2 have been investigated. A high-pressure micro-dilatometer was equipped to investigate the effect of CO2 pressure on the thermoplastic properties of coal. Using an identical dilatometer, Rashid Khan (1985) performed experiments with CO2 that revealed a dramatic reduction in the softening temperature of coal when exposed to high-pressure CO2. A set of experiments was designed for -20+45-mesh samples of Argonne Premium Pocahontas No.3 coal, which is similar in proximate and ultimate analysis to the Lower Kittanning seam coal that Khan used in his experiments. No dramatic decrease in coal softening temperature has been observed in high-pressure CO2 that would corroborate the prior work of Khan. Thus, conventional polymer (or 'geopolymer') theories may not be directly applicable to CO2 interaction with coals. Clays are similar to coals in that they represent abundant geomaterials with well-developed microporous structure. We evaluated the CO2 sequestration potential of clays relative to coals and investigated the factors that affect the sorption capacity, rates, and permanence of CO2 trapping. For the geomaterials comparison studies, we used source clay samples from The Clay Minerals Society. Preliminary results showed that expandable clays have CO2 sorption capacities comparable to those of coal. We analyzed sorption isotherms, XRD, DRIFTS (infrared reflectance spectra at non-ambient conditions), and TGA-MS (thermal gravimetric analysis) data to compare the effects of various factors on CO2 trapping. In montmorillonite, CO2 molecules may remain trapped for several months following several hours of exposure to high pressure (supercritical conditions), high temperature (above boiling point of water) or both. Such trapping is well preserved in either inert gas or the ambient environment and appears to eventually result in carbonate formation. We performed computer simulations of CO2 interaction with free cations (normal modes of CO2 and Na+CO2 were calculated using B3LYP / aug-cc-pVDZ and MP2 / aug-cc-pVDZ methods) and with clay structures containing interlayer cations (MD simulations with Clayff potentials for clay and a modified CO2 potential). Additionally, interaction of CO2 with hydrated Na-montmorillonite was studied using density functional theory with dispersion corrections. The sorption energies and the swelling behavior were investigated. Preliminary modeling results and experimental observations indicate that the presence of water molecules in the interlayer region is necessary for intercalation of CO2. Our preliminary conclusion is that CO2 molecules may intercalate into interlayer region of swelling clay and stay there via coordination to the interlayer cations.

  3. STRUCTURE-SOIL-STRUCTURE INTERACTION AT SRS | Department of Energy

    Office of Environmental Management (EM)

    INTERACTION AT SRS Structure-Soil-Structure Interaction at SRS Structural Mechanics - SRS October 25, 2011 Structure-Soil-Structure Interaction at SRS More Documents &...

  4. Two mesoscopic models of two interacting electrons

    E-Print Network [OSTI]

    Dibyendu Roy

    2009-11-03

    We study two simple mesoscopic models of interacting two electrons; first one consists of two quantum coherent parallel conductors with long-range Coulomb interaction in some localized region and the other is of an interacting quantum dot (QD) side-coupled to a noninteracting quantum wire. We evaluate exact two-particle scattering matrix as well as two-particle current which are relevant in a two-particle scattering experiment in these models. Finally we show that the on-site repulsive interaction in the QD filters out the spin-singlet two-electron state from the mixed two-electron input states in the side-coupled QD model.

  5. Frank Wilczek, Asymptotic Freedom, and Strong Interaction

    Office of Scientific and Technical Information (OSTI)

    Freedom, and Strong Interaction Resources with Additional Information H. David Politzer Photo Credit: Donna Coveney, MIT Frank Wilczek, a winner of the 2004 Nobel Prize in Physics...

  6. Quantifying turbidity current interactions with topography

    E-Print Network [OSTI]

    Straub, Kyle M

    2007-01-01

    This thesis advances our understanding of how transport properties of turbidity currents are mediated by interactions with seafloor topography, specifically channelized surfaces. Turbidity currents are responsible for ...

  7. Online interaction database: What have we learned

    E-Print Network [OSTI]

    Zadezensky, I.; de Castro, W.; Meyer, J.; Butterweck, V.; Derendorf, H.

    2006-10-25

    ?[Citrus?Reference?Book] 1Center?for?Food?and?Drug?Interaction?Research?and?Education,?University?of?Florida,?Gainesville,?FL Online?Database?For?Grapefruit?Juice?Drug?Interactions:?What?Have?We?Learned?? I.?Zadezensky1,?W.V.?de?Castro1,??J.?Meyer1,?V...?[Citrus?Reference?Book] 1Center?for?Food?and?Drug?Interaction?Research?and?Education,?University?of?Florida,?Gainesville,?FL Online?Database?For?Grapefruit?Juice?Drug?Interactions:?What?Have?We?Learned?? I.?Zadezensky1,?W.V.?de?Castro1,??J.?Meyer1,?V...

  8. Structural Interactions within Lithium Salt Solvates: Cyclic...

    Office of Scientific and Technical Information (OSTI)

    and ester solvents coordinate Li+ cations in electrolyte solutions for lithium batteries. One approach to gleaning significant insight into these interactions is to examine...

  9. Sticky Hands interaction with an anthropomorphic robot

    E-Print Network [OSTI]

    Hale, J.G.

    Hale,J.G. Pollick,F.E. Workshop on Interactive Robotics and Entertainment (WIRE-2000), Carnegie Mellon University, Pittsburgh, Pennsylvania Dept of Computing Science, University of Glasgow

  10. Africa Infrastructure Country Diagnostic Documents: Interactive...

    Open Energy Info (EERE)

    Africa Infrastructure Country Diagnostic Documents: Interactive MAP in PDF, all Countries Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Africa Infrastructure Country...

  11. Catalyst Support Interactions | Argonne Leadership Computing...

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

    on the reactivity of metal catalyst particles. The research team will also study the adhesion properties by simulating the interactions between metal particles of different sizes...

  12. Charge oscillations and interaction between potassium adatoms...

    Office of Scientific and Technical Information (OSTI)

    Charge oscillations and interaction between potassium adatoms on graphene studied by first-principles calculations Citation Details In-Document Search This content will become...

  13. Enhanced van der Waals interaction at interfaces

    E-Print Network [OSTI]

    Marin-Slobodan Tomas

    2008-02-20

    Using a recently obtained (general) formula for the interaction energy between an excited and a ground-state atom (Sherkunov Y 2007 Phys. Rev. A 75 012705), we consider the interaction energy between two such atoms near the interface between two media. We demonstrate that under the circumstances of the resonant coupling of the excited atom to the surface polariton mode of a vacuum-medium system the nonretarded atom*-atom interaction energy can be enhanced by (several) orders of magnitude in comparison with the van der Waals interaction energy of the two isolated atoms.

  14. Energy or Mass and Interaction

    E-Print Network [OSTI]

    Gustavo R Gonzalez-Martin

    2010-07-19

    A review. Problems: 1-Many empirical parameters and large dimension number; 2-Gravitation and Electrodynamics are challenged by dark matter and energy. Energy and nonlinear electrodynamics are fundamental in a unified nonlinear interaction. Nuclear energy appears as nonlinear SU(2) magnetic energy. Gravitation and electromagnetism are unified giving Einstein's equation and a geometric energy momentum tensor. A solution energy in the newtonian limit gives the gravitational constant G. Outside of this limit G is variable. May be interpreted as dark matter or energy. In vacuum, known gravitational solutions are obtained. Electromagnetism is an SU(2) subgroup. A U(1) limit gives Maxwell's equations. Geometric fields determine a generalized Dirac equation and are the germ of quantum physics. Planck's h and of Einstein's c are given by the potential and the metric. Excitations have quanta of charge, flux and spin determining the FQHE. There are only three stable 1/2 spin fermions. Mass is a form of energy. The rest energies of the fermions give the proton/electron mass ratio. Potential excitations have energies equal to the weak boson masses allowing a geometric interpretation of Weinberg's angle. SU(2) gives the anomalous magnetic moments of proton, electron, neutron and generates nuclear range attractive potentials strong enough to produce the binding energies of the deuteron and other nuclides. Lepton and meson masses are due to topological excitations. The geometric mass spectrum is satisfactory. The proton has a triple structure. The alpha constant is a geometric number.

  15. Fault interaction near Hollister, California

    SciTech Connect (OSTI)

    Mavko, G.M.

    1982-09-10

    A numerical model is used to study fault stress slip near Hollister, California. The geometrically complex system of interacting faults, including the San Andreas, Calaveras, Sargent, and Busch faults, is approximated with a two-dimensional distribution of short planar fault segments in an elastic medium. The steady stress and slip rate are simulated by specifying frictional strength and stepping the remote stress ahead in time. The resulting computed fault stress is roughly proportional to the observed spatial density of small earthquakes, suggesting that the distinction between segments characterized by earthquakes and those with aseismic creep results, in part, from geometry. A nonsteady simulation is made by introducing, in addition, stress drops for individual moderate earthquakes. A close fit of observed creep with calculated slip on the Calaveras and San Andreas faults suggests that many changes in creep rate (averaged over several months) are caused by local moderate earthquakes. In particular, a 3-year creep lag preceding the August 6, 1979, Coyote Lake earthquake on the Calaveras fault seems to have been a direct result of the November 28, 1974, Thanksgiving Day earthquake on the Busch fault. Computed lags in slip rate preceding some other moderate earthquakes in the area are also due to earlier earthquakes. Although the response of the upper 1 km of the fault zone may cause some individual creep events and introduce delays in others, the long-term rate appears to reflect deep slip.

  16. Interacting Jets from Binary Protostars

    E-Print Network [OSTI]

    G. C. Murphy; T. Lery; S. O'Sullivan; D. Spicer; F. Bacciotti; A. Rosen

    2007-11-20

    We investigate potential models that could explain why multiple proto-stellar systems predominantly show single jets. During their formation, stars most frequently produce energetic outflows and jets. However, binary jets have only been observed in a very small number of systems. We model numerically 3D binary jets for various outflow parameters. We also model the propagation of jets from a specific source, namely L1551 IRS 5, known to have two jets, using recent observations as constraints for simulations with a new MHD code. We examine their morphology and dynamics, and produce synthetic emission maps. We find that the two jets interfere up to the stage where one of them is almost destroyed or engulfed into the second one. We are able to reproduce some of the observational features of L1551 such as the bending of the secondary jet. While the effects of orbital motion are negligible over the jets dynamical timeline, their interaction has significant impact on their morphology. If the jets are not strictly parallel, as in most observed cases, we show that the magnetic field can help the collimation and refocusing of both of the two jets.

  17. Competing interactions in semiconductor quantum dots

    SciTech Connect (OSTI)

    van den Berg, R.; Brandino, G. P.; El Araby, O.; Konik, R. M.; Gritsev, V.; Caux, J. -S.

    2014-10-01

    We introduce an integrability-based method enabling the study of semiconductor quantum dot models incorporating both the full hyperfine interaction as well as a mean-field treatment of dipole-dipole interactions in the nuclear spin bath. By performing free induction decay and spin echo simulations we characterize the combined effect of both types of interactions on the decoherence of the electron spin, for external fields ranging from low to high values. We show that for spin echo simulations the hyperfine interaction is the dominant source of decoherence at short times for low fields, and competes with the dipole-dipole interactions at longer times. On the contrary, at high fields the main source of decay is due to the dipole-dipole interactions. In the latter regime an asymmetry in the echo is observed. Furthermore, the non-decaying fraction previously observed for zero field free induction decay simulations in quantum dots with only hyperfine interactions, is destroyed for longer times by the mean-field treatment of the dipolar interactions.

  18. Dynamical Symmetries Reflected in Realistic Interactions

    SciTech Connect (OSTI)

    Sviratcheva, K.D.; Draayer, J.P.; /Louisiana State U.; Vary, J.P.; /Iowa State U. /LLNL, Livermore /SLAC

    2007-04-06

    Realistic nucleon-nucleon (NN) interactions, derived within the framework of meson theory or more recently in terms of chiral effective field theory, yield new possibilities for achieving a unified microscopic description of atomic nuclei. Based on spectral distribution methods, a comparison of these interactions to a most general Sp(4) dynamically symmetric interaction, which previously we found to reproduce well that part of the interaction that is responsible for shaping pairing-governed isobaric analog 0{sup +} states, can determine the extent to which this significantly simpler model Hamiltonian can be used to obtain an approximate, yet very good description of low-lying nuclear structure. And furthermore, one can apply this model in situations that would otherwise be prohibitive because of the size of the model space. In addition, we introduce a Sp(4) symmetry breaking term by including the quadrupole-quadrupole interaction in the analysis and examining the capacity of this extended model interaction to imitate realistic interactions. This provides a further step towards gaining a better understanding of the underlying foundation of realistic interactions and their ability to reproduce striking features of nuclei such as strong pairing correlations or collective rotational motion.

  19. Interacting composite fermions , R.K. Kamillab

    E-Print Network [OSTI]

    Scarola, Vito

    composite fermions (CFs), the inter-CF interaction is responsible for many interesting, non-trivial phenom=2; the Fermi sea of CFs is unstable to Cooper pairing of CFs, thereby opening up a gap and producing into a weakly interacting gas of composite fermions (CFs) [2±6], where a CF is the bound state of an electron

  20. Spectroscopic investigation of metal-RNA interactions 

    E-Print Network [OSTI]

    Vogt, Matthew John

    2005-02-17

    Metal-RNA interactions are important to neutralize the negative charge and aid in correctly folding the RNA. Spectroscopically active metal ions, especially Mn2+, have been used to probe the type of interaction the metal has with RNA. In previous...

  1. Study of Coulomb interactions at VECC energies

    E-Print Network [OSTI]

    Varinderjit Kaur; Suneel Kumar; Rajeev K. Puri; S. Bhattacharya

    2011-07-29

    we study the effect of Coulomb interactions on balance energy for various colliding nuclei in terms of mass asymmetry. This study shows that the balance energy is affected by the Coulomb interactions as well as different nuclear equations of state. The preliminary results calculated theoretically will be of great use for scientists at VECC. This study is further in progress.

  2. eschweizerbartxxx Interactions between alien species and restoration

    E-Print Network [OSTI]

    Pace, Michael L.

    eschweizerbartxxx Interactions between alien species and restoration of large-river ecosystems-river ecosystems that are the subject of restoration efforts also typically are heavily invaded by alien species interactions that link alien species and river restoration. Most obviously, restoration may be aimed

  3. Competing interactions in semiconductor quantum dots

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

    van den Berg, R.; Brandino, G. P.; El Araby, O.; Konik, R. M.; Gritsev, V.; Caux, J. -S.

    2014-10-01

    We introduce an integrability-based method enabling the study of semiconductor quantum dot models incorporating both the full hyperfine interaction as well as a mean-field treatment of dipole-dipole interactions in the nuclear spin bath. By performing free induction decay and spin echo simulations we characterize the combined effect of both types of interactions on the decoherence of the electron spin, for external fields ranging from low to high values. We show that for spin echo simulations the hyperfine interaction is the dominant source of decoherence at short times for low fields, and competes with the dipole-dipole interactions at longer times. Onmore »the contrary, at high fields the main source of decay is due to the dipole-dipole interactions. In the latter regime an asymmetry in the echo is observed. Furthermore, the non-decaying fraction previously observed for zero field free induction decay simulations in quantum dots with only hyperfine interactions, is destroyed for longer times by the mean-field treatment of the dipolar interactions.« less

  4. Simulation Worksheet: Kuiper Belt Interactions Instructor Guidelines

    E-Print Network [OSTI]

    Farritor, Shane

    Simulation Worksheet: Kuiper Belt Interactions Instructor Guidelines The goal of this activity is for students to understand that there are possible orbits in the outer solar system where Kuiper Belt Objects interaction with the asteroid belt and the Kirkwood Gaps. This worksheet makes use of simulations contained

  5. Abstract polymer models with general pair interactions

    E-Print Network [OSTI]

    Aldo Procacci

    2008-11-26

    A convergence criterion of cluster expansion is presented in the case of an abstract polymer system with general pair interactions (i.e. not necessarily hard core or repulsive). As a concrete example, the low temperature disordered phase of the BEG model with infinite range interactions, decaying polynomially as $1/r^{d+\\lambda}$ with $\\lambda>0$, is studied.

  6. 1 Interaction modelling for digital libraries. C@Mdx 2000 Interaction Modelling for Digital Libraries

    E-Print Network [OSTI]

    Blandford, Ann

    1 Interaction modelling for digital libraries. C@Mdx 2000 Interaction Modelling for Digital specifically to the design and evaluation of digital libraries. This work is at an early stage of development about the quality of the interaction between users and devices, using digital libraries as a test domain

  7. Postdoctoral position -UC Davis -plant-vector interactions, plant-microbe interactions, molecular biology, ecology

    E-Print Network [OSTI]

    Ishida, Yuko

    Postdoctoral position - UC Davis - plant-vector interactions, plant-microbe interactions, molecular August 2014. The primary research goal of the Casteel lab is to identify the functions of microbes- microbe or plant-insect interactions will be preferred. Candidates with a proven record of excellence

  8. Van der Waals interactions in rare-gas dimers: The role of interparticle interactions

    E-Print Network [OSTI]

    Chen, Yu-Ting; Chai, Jeng-Da

    2015-01-01

    We investigate the potential energy curves of rare-gas dimers with various ranges and strengths of interparticle interactions (nuclear-electron, electron-electron, and nuclear-nuclear interactions). Our investigation is based on the highly accurate coupled-cluster theory associated with those interparticle interactions. For comparison, the performance of the corresponding Hartree-Fock theory, second-order Moller-Plesset perturbation theory, and density functional theory is also investigated. Our results reveal that when the interparticle interactions retain the long-range Coulomb tails, the nature of van der Waals interactions in the rare-gas dimers remains similar. By contrast, when the interparticle interactions are sufficiently short-range, the conventional van der Waals interactions in the rare-gas dimers completely disappear, yielding purely repulsive potential energy curves.

  9. High-energy cosmic ray interactions

    SciTech Connect (OSTI)

    Engel, Ralph; Orellana, Mariana; Reynoso, Matias M.; Vila, Gabriela S.

    2009-04-30

    Research into hadronic interactions and high-energy cosmic rays are closely related. On one hand--due to the indirect observation of cosmic rays through air showers--the understanding of hadronic multiparticle production is needed for deriving the flux and composition of cosmic rays at high energy. On the other hand the highest energy particles from the universe allow us to study the characteristics of hadronic interactions at energies far beyond the reach of terrestrial accelerators. This is the summary of three introductory lectures on our current understanding of hadronic interactions of cosmic rays.

  10. Proton radioactivity half lives with Skyrme interactions

    E-Print Network [OSTI]

    T. R. Routray; Abhishek Mishra; S. K. Tripathy; B. Behera; D. N. Basu

    2012-05-31

    The potential barrier impeding the spontaneous emission of protons in the proton radioactive nuclei is calculated as the sum of nuclear, Coulomb and centrifugal contributions. The nuclear part of the proton-nucleus interaction potential is obtained in the energy density formalism using Skyrme effective interaction that results into a simple algebraic expression. The half-lives of the proton emitters are calculated for the different Skyrme sets within the improved WKB framework. The results are found to be in reasonable agreement with the earlier results obtained for more complicated calculations involving finite range interactions.

  11. Pseudopotential for the electron-electron interaction

    E-Print Network [OSTI]

    Lloyd-Williams, J H; Conduit, G J

    2015-01-01

    We propose a pseudopotential for the electron-electron Coulomb interaction to improve the efficiency of many-body electronic structure calculations. The pseudopotential accurately replicates the scattering properties of the Coulomb interaction, and recovers the analytical solution for two electrons in a parabolic trap. A case study for the homogeneous electron gas using the diffusion Monte Carlo and configuration interaction methods recovers highly accurate values for the ground state energy, and the smoother potential reduces the computational cost by a factor of ~30. Finally, we demonstrate the use of the pseudopotential to study isolated lithium and beryllium atoms.

  12. Interaction of gravitational waves with matter

    E-Print Network [OSTI]

    A. Cetoli; C. J. Pethick

    2011-10-03

    We develop a unified formalism for describing the interaction of gravitational waves with matter that clearly separates the effects of general relativity from those due to interactions in the matter. Using it, we derive a general expression for the dispersion of gravitational waves in matter in terms of correlation functions for the matter in flat spacetime. The self energy of a gravitational wave is shown to have contributions analogous to the paramagnetic and diamagnetic contributions to the self energy of an electromagnetic wave. We apply the formalism to some simple systems - free particles, an interacting scalar field, and a fermionic superfluid.

  13. Cellular structure in system of interacting particles

    E-Print Network [OSTI]

    Bohdan Lev

    2008-02-21

    The general description of formation the cellular structure in the system of interacting particles is proposed. Interactions between particles are presumably well-understood and the phase transition in which can be studied in the scale of particle resolution. We presented analytical results of possible cellular structures for suspension of colloidal particles, in system particles immersed in liquid crystal and gravitational system. We have shown that cellular structure formation can occur in system of interacting particles for realistic values of temperature and particles concentration.

  14. Microscopic Models of Heavy Ion Interactions

    E-Print Network [OSTI]

    Capella, A

    2003-01-01

    An introduction to dynamical microscopic models of hadronic and nuclear interactions is presented. Special emphasis is put in the relation between multiparticle production and total cross-section contributions. In heavy ion collisions, some observables, considered as signals of the production of a Quark Gluon Plasma (QGP), are studied. It is shown that they can only be described if final state interactions are introduced. It is argued that the cross-sections required are too small to drive the system to thermal equilibrium within the duration time of the final state interaction.

  15. Proton radioactivity with a Yukawa effective interaction

    E-Print Network [OSTI]

    T. R. Routray; S. K. Tripathy; B. B. Dash; B. Behera; D. N. Basu

    2011-04-26

    The half lives of proton radioactivity of proton emitters are investigated theoretically. Proton-nucleus interaction potentials are obtained by folding the densities of the daughter nuclei with a finite range effective nucleon-nucleon interaction having Yukawa form. The Wood-Saxon density distributions for the nuclei used in calculating the nuclear as well as the Coulomb interaction potentials are predictions of the interaction. The quantum mechanical tunneling probability is calculated within the WKB framework. These calculations provide reasonable estimates for the observed proton radioactivity lifetimes. The effects of neutron-proton effective mass splitting in neutron rich asymmetric matter as well as the nuclear matter incompressibility on the decay probability are investigated.

  16. The lightspeed automatic interactive lighting preview system

    E-Print Network [OSTI]

    Ragan-Kelley, Jonathan Millard

    2007-01-01

    We present an automated approach for high-quality preview of feature-film rendering during lighting design. Similar to previous work, we use a deep-framebuffer shaded on the GPU to achieve interactive performance. Our first ...

  17. Stochastic analysis of soil-structure interaction 

    E-Print Network [OSTI]

    Chan, Charles Cheuk Lap

    1994-01-01

    This study investigates the effect of soil structure interaction on the response of a building subjected to an earthquake motion. Spectra consisting of the auto and cross spectral densities of three components of free-field earthquake motion at all...

  18. Interactive Bayesian identification of kinematic mechanisms

    E-Print Network [OSTI]

    Barragán, Patrick R

    2015-01-01

    This thesis addresses the problem of identifying mechanisms based on data gathered from a robot's interaction with them. We present a decision-theoretic formulation of this problem, using Bayesian filtering techniques to ...

  19. Protein Interactions in Regulation and Assembly 

    E-Print Network [OSTI]

    Hsiao, Hao-Ching

    2015-03-17

    The objectives of this work include: validation of yeast-based assays, investigation of protein-protein interactions in the regulatory role of an intrinsically disordered protein, Ultrabithorax (Ubx), and exploration of possible application of Ubx...

  20. Long range interactions in nanoscale science

    E-Print Network [OSTI]

    Rajter, Richard F.

    Our understanding of the “long range” electrodynamic, electrostatic, and polar interactions that dominate the organization of small objects at separations beyond an interatomic bond length is reviewed. From this basic-forces ...

  1. Cooperative Tertiary Interaction Network Guides RNA Folding

    SciTech Connect (OSTI)

    Behrouzi, Reza; Roh, Joon Ho; Kilburn, Duncan; Briber, R.M.; Woodson, Sarah A.

    2013-04-08

    Noncoding RNAs form unique 3D structures, which perform many regulatory functions. To understand how RNAs fold uniquely despite a small number of tertiary interaction motifs, we mutated the major tertiary interactions in a group I ribozyme by single-base substitutions. The resulting perturbations to the folding energy landscape were measured using SAXS, ribozyme activity, hydroxyl radical footprinting, and native PAGE. Double- and triple-mutant cycles show that most tertiary interactions have a small effect on the stability of the native state. Instead, the formation of core and peripheral structural motifs is cooperatively linked in near-native folding intermediates, and this cooperativity depends on the native helix orientation. The emergence of a cooperative interaction network at an early stage of folding suppresses nonnative structures and guides the search for the native state. We suggest that cooperativity in noncoding RNAs arose from natural selection of architectures conducive to forming a unique, stable fold.

  2. Hybrid Solutions to the Feature Interaction Problem

    E-Print Network [OSTI]

    Calder, M.

    Calder,M. Kolberg,M. Magill,E. Marples,D. Reiff-Marganiec,S. Feature Interactions in Telecommunications and Software Systems VII pp 295-312 IOS Press

  3. Dynamic strategic interactions : analysis and mechanism design

    E-Print Network [OSTI]

    Candogan, Utku Ozan

    2013-01-01

    Modern systems, such as engineering systems with autonomous entities, markets, and financial networks, consist of self-interested agents with potentially conflicting objectives. These agents interact in a dynamic manner, ...

  4. Topological phases with long-range interactions

    E-Print Network [OSTI]

    Gong, Zhe-Xuan; Hu, Anzi; Wall, Michael L; Foss-Feig, Michael; Gorshkov, Alexey V

    2015-01-01

    Topological phases of matter are primarily studied in quantum many-body systems with short-range interactions. Whether various topological phases can survive in the presence of long-range interactions, however, is largely unknown. Here we show that a paradigmatic example of a symmetry-protected topological phase, the Haldane phase of an antiferromagnetic spin-1 chain, surprisingly remains intact in the presence of arbitrarily slowly decaying power-law interactions. The influence of long-range interactions on the topological order is largely quantitative, and we expect similar results for more general systems. Our conclusions are based on large-scale matrix-product-state simulations and two complementary effective-field-theory calculations. The striking agreement between the numerical and analytical results rules out finite-size effects. The topological phase considered here should be experimentally observable in a recently developed trapped-ion quantum simulator.

  5. Topological phases with long-range interactions

    E-Print Network [OSTI]

    Zhe-Xuan Gong; Mohammad F. Maghrebi; Anzi Hu; Michael L. Wall; Michael Foss-Feig; Alexey V. Gorshkov

    2015-05-12

    Topological phases of matter are primarily studied in quantum many-body systems with short-range interactions. Whether various topological phases can survive in the presence of long-range interactions, however, is largely unknown. Here we show that a paradigmatic example of a symmetry-protected topological phase, the Haldane phase of an antiferromagnetic spin-1 chain, surprisingly remains intact in the presence of arbitrarily slowly decaying power-law interactions. The influence of long-range interactions on the topological order is largely quantitative, and we expect similar results for more general systems. Our conclusions are based on large-scale matrix-product-state simulations and two complementary effective-field-theory calculations. The striking agreement between the numerical and analytical results rules out finite-size effects. The topological phase considered here should be experimentally observable in a recently developed trapped-ion quantum simulator.

  6. Interactive Stereoscopic Installation: A Photographic Collage 

    E-Print Network [OSTI]

    Kannapurakkaran, Shyam

    2010-10-12

    The research involves the creation of an interactive installation showcasing the dynamic nature of human visual observation of a still photograph. Using an eye tracker as an input device, the data collected is used to create a photographic collage...

  7. Interacting vacuum energy in the dark sector

    SciTech Connect (OSTI)

    Chimento, L. P.; Carneiro, S.

    2015-03-26

    We analyse three cosmological scenarios with interaction in the dark sector, which are particular cases of a general expression for the energy flux from vacuum to matter. In the first case the interaction leads to a transition from an unstable de Sitter phase to a radiation dominated universe, avoiding in this way the initial singularity. In the second case the interaction gives rise to a slow-roll power-law inflation. Finally, the third scenario is a concordance model for the late-time universe, with the vacuum term decaying into cold dark matter. We identify the physics behind these forms of interaction and show that they can be described as particular types of the modified Chaplygin gas.

  8. Statistical methods to infer biological interactions

    E-Print Network [OSTI]

    Tucker, George Jay

    2014-01-01

    Biological systems are extremely complex, and our ability to experimentally measure interactions in these systems is limited by inherent noise. Technological advances have allowed us to collect unprecedented amounts of raw ...

  9. Dynamics of deceptive interactions in social networks

    E-Print Network [OSTI]

    Barrio, Rafael A; Dunbar, Robin; Iñiguez, Gerardo; Kaski, Kimmo

    2015-01-01

    In this paper we examine the role of lies in human social relations by implementing some salient characteristics of deceptive interactions into an opinion formation model, so as to describe the dynamical behaviour of a social network more realistically. In this model we take into account such basic properties of social networks as the dynamics of the intensity of interactions, the influence of public opinion, and the fact that in every human interaction it might be convenient to deceive or withhold information depending on the instantaneous situation of each individual in the network. We find that lies shape the topology of social networks, especially the formation of tightly linked, small communities with loose connections between them. We also find that agents with a larger proportion of deceptive interactions are the ones that connect communities of different opinion, and in this sense they have substantial centrality in the network. We then discuss the consequences of these results for the social behaviou...

  10. MARKER-AUGMENTED ROBOT-ENVIRONMENT INTERACTION

    E-Print Network [OSTI]

    Mali, Amol D.

    MARKER-AUGMENTED ROBOT-ENVIRONMENT INTERACTION Amol Dattatraya Mali Electrical Engg. & Computer Science University of Wisconsin, Milwaukee, WI 53211 mali@miller.cs.uwm.edu Abstract There has been

  11. Enhancing Interactive Web Applications in Hybrid Networks

    E-Print Network [OSTI]

    Venkataramani, Arun

    Enhancing Interactive Web Applications in Hybrid Networks Aruna Balasubramanian Brian Neil Levine into a one- shot request/response process. We deployed a prototype of Thedu on the DieselNet testbed

  12. Arduino Tool: For Interactive Artwork Installations

    E-Print Network [OSTI]

    Shaikh, Murtaza Hussain

    2012-01-01

    The emergence of the digital media and computational tools has widened the doors for creativity. The cutting edge in the digital arts and role of new technologies can be explored for the possible creativity. This gives an opportunity to involve arts with technologies to make creative works. The interactive artworks are often installed in the places where multiple people can interact with the installation, which allows the art to achieve its purpose by allowing the people to observe and involve with the installation. The level of engagement of the audience depends on the various factors such as aesthetic satisfaction, how the audience constructs meaning, pleasure and enjoyment. The method to evaluate these experiences is challenging as it depends on integration between the artificial life and real life by means of human computer interaction. This research investigates "How Adriano fits for creative and interactive artwork installations?" using an artwork installation in the campus of NTNU (Norwegian University...

  13. Understanding Lorentz violation with Rashba interaction

    E-Print Network [OSTI]

    Ajaib, M Adeel

    2012-01-01

    Rashba spin orbit interaction is a well studied effect in condensed matter physics and has important applications in spintronics. The Standard Model Extension (SME) includes a CPT-even term with the coefficient H_{\\mu \

  14. CATRA: Interactive Measuring and Modeling of Cataracts

    E-Print Network [OSTI]

    Pamplona, Vitor F.

    We introduce an interactive method to assess cataracts in the human eye by crafting an optical solution that measures the perceptual impact of forward scattering on the foveal region. Current solutions rely on highly-trained ...

  15. INTERACTIONS BETWEEN ADSORBATE PARTICLES Theodore L. Einstein

    E-Print Network [OSTI]

    Einstein, Theodore L.

    .N. Unertl, (Elsevier, Amsterdam, 1996), Handbook of Surface Science, vol. 1, S. Holloway and N.V. Richardson.2. General Features of Lateral Interaction Energies 11.2.1. Fundamental Ideas 11.2.2. Electronic Indirect

  16. Tachyonic field interacting with Scalar (Phantom) Field

    E-Print Network [OSTI]

    Surajit Chattopadhyay; Ujjal Debnath

    2009-01-29

    In this letter, we have considered the universe is filled with the mixture of tachyonic field and scalar or phantom field. If the tachyonic field interacts with scalar or phantom field, the interaction term decays with time and the energy for scalar field is transferred to tachyonic field or the energy for phantom field is transferred to tachyonic field. The tachyonic field and scalar field potentials always decrease, but phantom field potential always increases.

  17. Interactions and Focusing of Nonlinear Water Waves

    E-Print Network [OSTI]

    Harihar Khanal; Stefan C. Mancas; Shahrdad Sajjadi

    2013-02-21

    The coupled cubic nonlinear Schr\\"odinger (CNLS) equations are used to study modulational instabilities of a pair of nonlinearly interacting two-dimensional waves in deep water. It has been shown that the full dynamics of these interacting waves gives rise to localized large-amplitude wavepackets (wave focusing). In this short letter we attempt to verify this result numerically using a Fourier spectral method for the CNLS equations.

  18. DIP: The Database of Interacting Proteins

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

    The DIP Database catalogs experimentally determined interactions between proteins. It combines information from a variety of sources to create a single, consistent set of protein-protein interactions. By interaction, the DIP Database creators mean that two amino acid chains were experimentally identified to bind to each other. The database lists such pairs to aid those studying a particular protein-protein interaction but also those investigating entire regulatory and signaling pathways as well as those studying the organisation and complexity of the protein interaction network at the cellular level. The data stored within the DIP database were curated, both, manually by expert curators and also automatically using computational approaches that utilize the knowledge about the protein-protein interaction networks extracted from the most reliable, core subset of the DIP data. It is a relational database that can be searched by protein, sequence, motif, article information, and pathBLAST. The website also serves as an access point to a number of projects related to DIP, such as LiveDIP, The Database of Ligand-Receptor Partners (DLRP) and JDIP. Users have free and open access to DIP after login. [Taken from the DIP Guide and the DIP website] (Specialized Interface) (Registration Required)

  19. Titration Microcalorimetry Study: Interaction of Drug and Ionic Microgel System

    E-Print Network [OSTI]

    Tian, Y.

    Doxorubicin (DOX) and Pluronic-PAA interaction was investigated using isothermal titration calorimetry (ITC). DOX/polymer interaction is governed primarily by electrostatic interaction. The uptake of DOX results in the ...

  20. Extracting Emotion From Movement: Representing Interactions as Glyphs

    E-Print Network [OSTI]

    Sharlin, Ehud

    to interact in a way that is socially acceptable. It will be useful to have tools to understand, evaluate objects interacting, such as leaves blowing in the wind, they often translate the interaction

  1. Fluid-rock interaction: A reactive transport approach

    E-Print Network [OSTI]

    Steefel, C.

    2009-01-01

    to coupled mass transport and fluid-rock interaction in aof a reactive transport approach in fluid-rock interaction,reactive transport models for fluid-rock interaction. Case

  2. Many-body systems in the presence of the random interaction and the $J$ pairing interaction

    E-Print Network [OSTI]

    A. Arima

    2004-05-26

    In this talk I shall discuss some regularities of many-body systems in the presence of random interactions and regularities of a single-$j$ shell for the $J$ pairing interaction which works only when two particles are coupled to spin $J$. I shall first explain an empirical rule to predict the spin $I$ ground state probability. Then I shall present some interesting results of a single-$j$ shell under the $J$ pairing interaction. Last I shall discuss some preliminary results of binding energies in the presence of random two-body interactions.

  3. Non-Linear Seismic Soil Structure Interaction (SSI) Method for...

    Office of Environmental Management (EM)

    Non-Linear Seismic Soil Structure Interaction (SSI) Method for Developing Non-Linear Seismic SSI Analysis Techniques Non-Linear Seismic Soil Structure Interaction (SSI) Method for...

  4. Advanced Characterization of Particles and Particle-Cell Interactions...

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

    Characterization of Particles and Particle-Cell Interactions Advanced Characterization of Particles and Particle-Cell Interactions 2004 Diesel Engine Emissions Reduction (DEER)...

  5. Grid-Interactive Renewable Water Heating Economic and Environmental...

    Energy Savers [EERE]

    1 Grid-Interactive Renewable Water Heating Economic and Environmental Value Grid-interactive renewable water heaters have smart controls that quickly change their charge rate and...

  6. Quantum Chemistry of CO2 Interaction with Swelling Clays | netl...

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

    Quantum Chemistry of CO2 Interaction with Swelling Clays Quantum Chemistry of CO2 Interaction with Swelling Clays Ubiquitous clay minerals can play an important role in assessing...

  7. First-principles studies of hydrogen interaction with ultrathin...

    Office of Scientific and Technical Information (OSTI)

    First-principles studies of hydrogen interaction with ultrathin Mg and Mg-based alloy films Prev Next Title: First-principles studies of hydrogen interaction with ultrathin...

  8. Control of Light-matter Interaction Using Dispersion Engineered...

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

    interaction between them is carried by the electromagnetic Bloch waves of the photonic crystal. This coherent interaction results in the formation of strongly coupled...

  9. Experiment-Based Model for the Chemical Interactions between...

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

    Experiment-Based Model for the Chemical Interactions between Geothermal Rocks, Supercritical Carbon Dioxide and Water Experiment-Based Model for the Chemical Interactions between...

  10. Method and apparatus for modeling interactions

    DOE Patents [OSTI]

    Xavier, Patrick G. (Albuquerque, NM)

    2000-08-08

    A method and apparatus for modeling interactions between bodies. The method comprises representing two bodies undergoing translations and rotations by two hierarchical swept volume representations. Interactions such as nearest approach and collision can be modeled based on the swept body representations. The present invention can serve as a practical tool in motion planning, CAD systems, simulation systems, safety analysis, and applications that require modeling time-based interactions. A body can be represented in the present invention by a union of convex polygons and convex polyhedra. As used generally herein, polyhedron includes polygon, and polyhedra includes polygons. The body undergoing translation can be represented by a swept body representation, where the swept body representation comprises a hierarchical bounding volume representation whose leaves each contain a representation of the region swept by a section of the body during the translation, and where the union of the regions is a superset of the region swept by the surface of the body during translation. Interactions between two bodies thus represented can be modeled by modeling interactions between the convex hulls of the finite sets of discrete points in the swept body representations.

  11. Identifying dark matter interactions in monojet searches

    SciTech Connect (OSTI)

    Agrawal, Prateek; Rentala, Vikram

    2014-05-01

    We study the discrimination of quark-initiated jets from gluon-initiated jets in monojet searches for dark matter using the technique of averaged jet energy profiles. We demonstrate our results in the context of effective field theories of dark matter interactions with quarks and gluons, but our methods apply more generally to a wide class of models. Different effective theories of dark matter and the standard model backgrounds each have a characteristic quark/gluon fraction for the leading jet. When used in conjunction with the traditional cut-and-count monojet search, the jet energy profile can be used to set stronger bounds on contact interactions of dark matter. In the event of a discovery of a monojet excess at the 14 TeV LHC, contact interactions between dark matter with quarks or with gluons can be differentiated at the 95% confidence level. For a given rate at the LHC, signal predictions at direct detection experiments for different dark matter interactions can span five orders of magnitude. The ability to identify these interactions allows us to make a tighter connection between LHC searches and direct detection experiments.

  12. Intrinsic Spin-Orbit Interaction in Graphene

    E-Print Network [OSTI]

    B. S. Kandemir

    2012-05-03

    In graphene, we report the first theoretical demonstration of how the intrinsic spin orbit interaction can be deduced from the theory and how it can be controlled by tuning a uniform magnetic field, and/or by changing the strength of a long range Coulomb like impurity (adatom), as well as gap parameter. In the impurity context, we find that intrinsic spin-orbit interaction energy may be enhanced by increasing the strength of magnetic field and/or by decreasing the band gap mass term. Additionally, it may be strongly enhanced by increasing the impurity strength. Furthermore, from the proposal of Kane and Mele [Phys. Rev. Lett. 95, 226801 (2005)], it was discussed that the pristine graphene has a quantized spin Hall effect regime where the Rashba type spin orbit interaction term is smaller than that of intrinsic one. Our analysis suggest the nonexistence of such a regime in the ground state of flat graphene.

  13. Identifying the structural discontinuities of human interactions

    E-Print Network [OSTI]

    Grauwin, Sebastian; Sobolevsky, Stanislav; Hövel, Philipp; Simini, Filippo; Vanhoof, Maarten; Smoreda, Zbigniew; Barabasi, Albert-Laszlo; Ratti, Carlo

    2015-01-01

    The idea of a hierarchical spatial organization of society lies at the core of seminal theories in human geography that have strongly influenced our understanding of social organization. In the same line, the recent availability of large-scale human mobility and communication data has offered novel quantitative insights hinting at a strong geographical confinement of human interactions within neighboring regions, extending to local levels within countries. However, models of human interaction largely ignore this effect. Here, we analyze several country-wide networks of telephone calls and uncover a systematic decrease of communication induced by borders which we identify as the missing variable in state-of-the-art models. Using this empirical evidence, we propose an alternative modeling framework that naturally stylize the damping effect of borders. We show that this new notion substantially improves the predictive power of widely used interaction models, thus increasing our ability to predict social activiti...

  14. Axial interaction free-electron laser

    DOE Patents [OSTI]

    Carlsten, B.E.

    1997-09-02

    Electron orbits from a helical axial wiggler in an axial guide field are absolutely unstable as power is extracted from the particles. For off-axis beams an axial FEL mechanism exists when the axial electric field in a TM mode is wiggled to interact with the axial velocity of the electrons that form the beam. The interaction strength is comparable to that for helical FELs and is insensitive to beam orbit errors. The orbits for this mechanism are extremely stable in the absence of space charge and lead to high extraction efficiencies without particle phasing incoherence or interception. This interaction mechanism is suitable for use with intense annular electron beams for high power generation at microwave frequencies. 5 figs.

  15. Directional depletion interactions in shaped particles

    E-Print Network [OSTI]

    A. Scala; P. G. De Sanctis Lucentini

    2014-10-16

    Entropic forces in colloidal suspensions and in polymer-colloid systems are of long-standing and continuing interest. Experiments show how entropic forces can be used to control the self-assembly of colloidal particles. Significant advances in colloidal synthesis made in the past two decades have enabled the preparation of high quality nano-particles with well-controlled sizes, shapes, and compositions, indicating that such particles can be utilized as "artificial atoms" to build new materials. To elucidate the effects of the shape of particles upon the magnitude of entropic interaction, we analyse the entropic interactions of two cut-spheres. We show that the solvent induces a strong directional depletion attraction among flat faces of the cut-spheres. Such an effect highlights the possibility of using the shape of particles to control directionality and strength of interaction.

  16. Axial interaction free-electron laser

    DOE Patents [OSTI]

    Carlsten, Bruce E. (Los Alamos, NM)

    1997-01-01

    Electron orbits from a helical axial wiggler in an axial guide field are absolutely unstable as power is extracted from the particles. For off-axis beams an axial FEL mechanism exists when the axial electric field in a TM mode is wiggled to interact with the axial velocity of the electrons that form the beam. The interaction strength is comparable to that for helical FELs and is insensitive to beam orbit errors. The orbits for this mechanism are extremely stable in the absence of space charge and lead to high extraction efficiencies without particle phasing incoherence or interception. This interaction mechanism is suitable for use with intense annular electron beams for high power generation at microwave frequencies.

  17. Modeling bubble-vortex interactions Modeling and simulation of multiple bubble entrainment and interactions with two

    E-Print Network [OSTI]

    Apte, Sourabh V.

    Modeling bubble-vortex interactions Modeling and simulation of multiple bubble entrainment entrainment and interactions with two dimensional vorti- cal flows are preformed using a Discrete Element microbubbles entrained in a traveling vortex tube is studied in detail. The test case resembles the experiments

  18. Pseudopotential for the electron-electron interaction

    E-Print Network [OSTI]

    Lloyd-Williams, J. H.; Needs, R. J.; Conduit, G. J.

    2015-08-05

    -of-mass frame with wave vector k ? 0 and angular momentum quantum number `. The Hamiltonian in atomic units is ? 1r2 ddr (r2 d? dr ) + `(`+1) r2 ?+ V (r)? = k2?, and the repulsive Coulomb potential is V (r) = 1/r. The proposed pseudopotential is identical... to fermion anti- symmetry. We solve for the energy of two interacting electrons in the parabolic trap within the center-of-mass frame in which the interacting Hamiltonian for relative mo- tion is Hˆ = ? 1r2 ddr (r2 ddr ) + ?2r2/4 + `(`+ 1)/r2 + V (r), where V...

  19. Casimir interaction from magnetically coupled eddy currents

    E-Print Network [OSTI]

    Francesco Intravaia; Carsten Henkel

    2009-09-06

    We study the quantum and thermal fluctuations of eddy (Foucault) currents in thick metallic plates. A Casimir interaction between two plates arises from the coupling via quasi-static magnetic fields. As a function of distance, the relevant eddy current modes cross over from a quantum to a thermal regime. These modes alone reproduce previously discussed thermal anomalies of the electromagnetic Casimir interaction between good conductors. In particular, they provide a physical picture for the Casimir entropy whose nonzero value at zero temperature arises from a correlated, glassy state.

  20. Casimir Interaction from Magnetically Coupled Eddy Currents

    SciTech Connect (OSTI)

    Intravaia, Francesco; Henkel, Carsten [Institut fuer Physik und Astronomie, Universitaet Potsdam, 14476 Potsdam (Germany)

    2009-09-25

    We study the quantum and thermal fluctuations of eddy (Foucault) currents in thick metallic plates. A Casimir interaction between two plates arises from the coupling via quasistatic magnetic fields. As a function of distance, the relevant eddy current modes cross over from a quantum to a thermal regime. These modes alone reproduce previously discussed thermal anomalies of the electromagnetic Casimir interaction between good conductors. In particular, they provide a physical picture for the Casimir entropy whose nonzero value at zero temperature arises from a correlated, glassy state.

  1. Microengineering laser plasma interactions at relativistic intensities

    E-Print Network [OSTI]

    Jiang, S; Audesirk, H; George, K M; Snyder, J; Krygier, A; Lewis, N S; Schumacher, D W; Pukhov, A; Freeman, R R; Akli, K U

    2015-01-01

    We report on the first successful proof-of-principle experiment to manipulate laser-matter interactions on the microscale using highly ordered Si microwire arrays. The interaction of a high contrast short pulse laser with a flat target via periodic Si microwires yields a substantial enhancement in both total and cut-off energies of the produced electron beam. The self generated electric and magnetic fields behave as an electromagnetic lens that confines and guides electrons between the microwires as they acquire relativistic energies via direct laser acceleration (DLA).

  2. Nuclear Self-energy and Realistic Interactions

    E-Print Network [OSTI]

    T. Frick; Kh. Gad; H. Müther; P. Czerski

    2001-11-14

    The structure of nucleon self-energy in nuclear matter is evaluated for various realistic models of the nucleon-nucleon (NN) interaction. Starting from the Brueckner-Hartree-Fock approximation without the usual angle-average approximation, the effects of hole-hole contributions and a self-consistent treatment within the framework of the Green function approach are investigated. Special attention is paid to the predictions for the spectral function originating from various models of the NN interaction which all yield an accurate fit for the NN phase shifts.

  3. Gas-Alloy Interactions at Elevated Temperatures

    SciTech Connect (OSTI)

    Arroyave, Raymundo; Gao, Michael

    2012-12-01

    The understanding of the stability of metals and alloys against oxidation and other detrimental reactions, to the catalysis of important chemical reactions and the minimization of defects associated with processing and synthesis have one thing in common: At the most fundamental level, all these scientific/engineering problems involve interactions between metals and alloys (in the solid or liquid state) and gaseous atmospheres at elevated temperatures. In this special issue, we have collected a series of articles that illustrate the application of different theoretical, computational, and experimental techniques to investigate gas-alloy interactions.

  4. Configuration Interactions Constrained by Energy Density Functionals

    E-Print Network [OSTI]

    B. Alex Brown; Angelo Signoracci; Morten Hjorth-Jensen

    2010-09-24

    A new method for constructing a Hamiltonian for configuration interaction calculations with constraints to energies of spherical configurations obtained with energy-density-functional (EDF) methods is presented. This results in a unified model that reproduced the EDF binding-energy in the limit of single-Slater determinants, but can also be used for obtaining energy spectra and correlation energies with renormalized nucleon-nucleon interactions. The three-body and/or density-dependent terms that are necessary for good nuclear saturation properties are contained in the EDF. Applications to binding energies and spectra of nuclei in the region above 208Pb are given.

  5. Adaptive Interaction through WWW Fuyau Lin and Ron Danielson

    E-Print Network [OSTI]

    Danielson, Ronald

    Adaptive Interaction and Instruction using the World-Wide Web. We include a brief survey of human-computer of this paper discusses human-computer interaction in the context of the WWW, factors relevant to delivering on the Web. 2. HUMAN-COMPUTER INTERACTION AND THE WWW #12;Mechanisms for Human-Computer Interaction (HCI

  6. Microsoft PowerPoint - 11_Interactive Session on NMMSS _Monday...

    National Nuclear Security Administration (NNSA)

    Interactive Session on NMMSS Fundamentals (Including SAMS) Pete Dessaules, NNSA James Crabtree, NNSA NMMSS Analysts, LINK...

  7. Multimedia Pedagogues: Interactive Multimedia Systems for Teaching and Learning

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    documented interactive educational videodisk projects was The Puzzle of the Tacoma Narrows Bridge Collapse

  8. Exploring Host-Microbe Interactions in Hydra

    E-Print Network [OSTI]

    hosts interact with epithelial-bound microorganisms Sebastian Fraune, Rene´ Augustin, and Thomas C. G against patho- gens, much like other more complex organisms. Further, microorganisms colonize epithelial colonizers from threat- ening pathogens, and what role do those coloniz- ers play for Hydra in its

  9. Automatically Testing Interacting Software Components Leonard Gallagher

    E-Print Network [OSTI]

    Offutt, Jeff

    Automatically Testing Interacting Software Components Leonard Gallagher Information Technology@ise.gmu.edu ABSTRACT One goal of integration testing for object-oriented software is to ensure high object. It addresses methods for identifying the relevant actions of a test component to be integrated into the system

  10. Investigation of electrons interaction in a superconductor

    E-Print Network [OSTI]

    Iogann Tolbatov

    2009-10-21

    Investigating the interaction of electrons in a superconductor by means of a method of solitary waves of Korteweg - de Vries, we refute the claim of absence of "Cooper pairs" in a superconductor. We also indicate that the nondissipative transfer of energy in the superconductor is possible only with the help of a pair of electrons.

  11. Interacting with Layered Physical Visualizations on Tabletops

    E-Print Network [OSTI]

    Visualizations; Digital Fabricaton; Interactive Surfaces ACM Classification Keywords H.5.m. Information objects to support a direct engagement with the digital world. These physical objects either represent digital objects Copyright is held by the author/owner(s). TEI 2014, Feb 16 ­ 19, 2014, Munich, Germany

  12. Learning an Interactive Segmentation System Hannes Nickisch

    E-Print Network [OSTI]

    Kohli, Pushmeet

    Permission to make digital or hard copies of all or part of this work for personal or classroom use 1 . Interactive image classification without user model is dis- cussed in the machine learning of an image. It is a classification problem where eac

  13. Impact Schedule Building Interactive Digital Libraries

    E-Print Network [OSTI]

    New Ideas Impact Schedule Building Interactive Digital Libraries of Formal Algorithmic Knowledge Winter 2002 Elaborate conceptual basis for FDL Implement Prototype Formal Digital Library Add content in formal digital libraries § The project is testing these mechanisms and tools in a prototype formal

  14. 2010 Atomic & Molecular Interactions Gordon Research Conference

    SciTech Connect (OSTI)

    Todd Martinez

    2010-07-23

    The Atomic and Molecular Interactions Gordon Conferences is justifiably recognized for its broad scope, touching on areas ranging from fundamental gas phase and gas-condensed matter collision dynamics, to laser-molecule interactions, photophysics, and unimolecular decay processes. The meeting has traditionally involved scientists engaged in fundamental research in gas and condensed phases and those who apply these concepts to systems of practical chemical and physical interest. A key tradition in this meeting is the strong mixing of theory and experiment throughout. The program for 2010 conference continues these traditions. At the 2010 AMI GRC, there will be talks in 5 broadly defined and partially overlapping areas of intermolecular interactions and chemical dynamics: (1) Photoionization and Photoelectron Dynamics; (2) Quantum Control and Molecules in Strong Fields; (3) Photochemical Dynamics; (4) Complex Molecules and Condensed Phases; and (5) Clusters and Reaction Dynamics. These areas encompass many of the most productive and exciting areas of chemical physics, including both reactive and nonreactive processes, intermolecular and intramolecular energy transfer, and photodissociation and unimolecular processes. Gas phase dynamics, van der Waals and cluster studies, laser-matter interactions and multiple potential energy surface phenomena will all be discussed.

  15. Classical gravitational spin-spin interaction

    E-Print Network [OSTI]

    W. B. Bonnor

    2002-01-30

    I obtain an exact, axially symmetric, stationary solution of Einstein's equations for two massless spinning particles. The term representing the spin-spin interaction agrees with recently published approximate work. The spin-spin force appears to be proportional to the inverse fourth power of the coordinate distance between the particles.

  16. iCosmo: an Interactive Cosmology Package

    E-Print Network [OSTI]

    Alexandre Refregier; Adam Amara; Thomas Kitching; Anais Rassat

    2011-04-28

    Aims: The interactive software package iCosmo, designed to perform cosmological calculations is described. Methods: iCosmo is a software package to perform interactive cosmological calculations for the low redshift universe. Computing distance measures, the matter power spectrum, and the growth factor is supported for any values of the cosmological parameters. It also computes derived observed quantities for several cosmological probes such as cosmic shear, baryon acoustic oscillations and type Ia supernovae. The associated errors for these observables can be derived for customised surveys, or for pre-set values corresponding to current or planned instruments. The code also allows for the calculation of cosmological forecasts with Fisher matrices which can be manipulated to combine different surveys and cosmological probes. The code is written in the IDL language and thus benefits from the convenient interactive features and scientific library available in this language. iCosmo can also be used as an engine to perform cosmological calculations in batch mode, and forms a convenient adaptive platform for the development of further cosmological modules. With its extensive documentation, it may also serve as a useful resource for teaching and for newcomers in the field of cosmology. Results: The iCosmo package is described with various examples and command sequences. The code is freely available with documentation at http://www.icosmo.org, along with an interactive web interface and is part of the Initiative for Cosmology, a common archive for cosmological resources.

  17. Protein Interactions in Regulation and Assembly 

    E-Print Network [OSTI]

    Hsiao, Hao-Ching

    2015-03-17

    , which interact with other proteins, as well as characterization of cell behaviors on biomaterials formed by self-assemble Ubx proteins will be discussed in this dissertation. Figure 1.12 Ubx fibers accommodate cells regardless of the cell type. Ubx...

  18. Sequence Mining in Dynamic and Interactive Environments

    E-Print Network [OSTI]

    Zaki, Mohammed Javeed

    ) and are required to manipulate it (interactivity). For example, consider a large retail store like Walmart, which has a data-warehouse more than a terabyte in size. In addition, Walmart collects approximately 20 by applications in the retail industry (e.g. the Walmart example from above), including attached mailing, add

  19. Quenching Processes in Flame-Vortex Interactions

    E-Print Network [OSTI]

    Zingale, Michael

    for Astrophysical Thermonuclear Flashes 1 , Chicago, IL 60637 y Department of Astronomy and Astrophysics, University-vortex interactions in order to understand quenching of thermonuclear ames. The key question is|can a ther- monuclear. If a ame encounters a 1) The Center for Astrophysical Thermonuclear Flashes is supported by the Department

  20. AREA OVERVIEW----Agent & Data Mining Interaction

    E-Print Network [OSTI]

    Cao, Longbing

    AREA OVERVIEW---- Agent & Data Mining Interaction (ADMI) Longbing Cao Faculty of Information in a Multiple Agent Environment", EWSL91, 1991 Agent-based data mining & knowledge discovery by Davies, W., 1994 Research topics Agent driven data mining Data mining driven agents & multi- agent systems Mutual issues

  1. Lattice investigation of heavy meson interactions

    E-Print Network [OSTI]

    Björn Wagenbach; Pedro Bicudo; Marc Wagner

    2014-11-10

    We report on a lattice investigation of heavy meson interactions and of tetraquark candidates with two very heavy quarks. These two quarks are treated in the static limit, while the other two are up, down, strange or charm quarks of finite mass. Various isospin, spin and parity quantum numbers are considered.

  2. Working group on $??$ and $?$N interactions - Summary

    E-Print Network [OSTI]

    Ulf-G. Meißner; Martin Sevior; A. Badertscher; B. Borasoy; P. Büttiker; G. Höhler; M. Knecht; O. Krehl; J. Lowe; M. Mojzis; G. Müller; O. Patarakin; M. Pavan; A. Rusetsky; M. E. Sainio; J. Schacher; G. Smith; S. Steininger; V. Vereshagin

    1997-11-18

    This is the summary of the working group on $\\pi\\pi$ and $\\pi$N interactions of the Chiral Dynamics Workshop in Mainz, September 1-5, 1997. Each talk is represented by an extended one page abstract. Some additional remarks by the convenors are added

  3. PIC : Protein Interaction Calculator HELP AND GUIDELINES

    E-Print Network [OSTI]

    Srinivasan, N.

    PIC : Protein Interaction Calculator HELP AND GUIDELINES CONTENTS 1. Overview 2. Method 3. Input 4 (PIC) is a server which, given the coordinate set of threedimensional structure of a protein colored by PIC programmes can be downloaded and conveniently displayed with structural viewers

  4. Interactions of Photons at the Highest Energies

    E-Print Network [OSTI]

    Interactions of Photons at the Highest Energies Measurement of the photon­proton total cross section at a center­of­mass energy of 209 GeV at HERA The discovery of the photon dates back to Einstein remains incomplete, even though its properties have been explored over a wide range of energies

  5. Interactive Multiresolution Surface Viewing Andrew Certainz

    E-Print Network [OSTI]

    Washington at Seattle, University of

    proposed as a basic tool supporting com- pression, progressive transmission, and level-of-detail control David Salesin Werner Stuetzley Department of Computer Science and Engineering Department of Mathematics of machine characteristics and load, and interactive choice of tradeoff between the amount of detail in ge

  6. Interactive Termination Proofs using Termination Cores

    E-Print Network [OSTI]

    Manolios, Panagiotis "Pete"

    Interactive Termination Proofs using Termination Cores Panagiotis Manolios and Daron Vroon College@ccs.neu.edu, daron.vroon@gmail.com Abstract. Recent advances in termination analysis have yielded new methods and determining how to proceed. In this paper, we address the issue of building termination analysis engines

  7. AN ADAPTIVE WAVELET METHOD FOR FLUIDSTRUCTURE INTERACTION

    E-Print Network [OSTI]

    Vasilyev, Oleg V.

    .g. turbu- lent flow over the wings and fuselage of airplanes), in off-shore drilling (e.g. water flow). In this paper we propose combining two mathematical approaches to calculate fluid­structure interaction re- duced number of modes with a well-controlled error. Furthermore, the computational cost

  8. Ice-volcano interactions Eyjafjallajkull volcano, Iceland

    E-Print Network [OSTI]

    Berthier, Etienne

    Ice-volcano interactions in Eyjafjallajökull volcano, Iceland Eyjólfur Magnússon1, Magnús Tumi Sciences, University of Iceland, Reykjavík, Iceland 2. Institute of Earth Sciences, University of Iceland, Reykjavík, Iceland 3. Icelandic Coast Guard SPIRIT workshop 29&30 April 2010, Toulouse Picture by Eyjólfur

  9. Interactive Visualization of Remote Sensing Data

    E-Print Network [OSTI]

    Blanz, Volker

    Interactive Visualization of Remote Sensing Data Interaktive Visualisierung von Fernerkundungsdaten alterungsbeständigem holz- und säurefreiem Papier. #12;Abstract Remote Sensing is an important tool for the analysis and spaceborne Remote Sensing systems produce a rapidly growing number of data sets, and improvements in sensor

  10. Interaction Region Issues at the NLC

    SciTech Connect (OSTI)

    Markiewicz, Thomas W.; Maruyama, T.; /SLAC

    2007-09-26

    Two detector concepts are being investigated for the Next Linear Collider. This paper discusses the current design of the interaction region for one of them, based on a 6 Tesla solenoid and silicon based tracking. Topics include masking layout, backgrounds and the suppression of final quadrupole jitter. All calculations are based on the 1 TeV design parameters.

  11. MAKING INTERACTIVE GUIDES MORE ATTRACTIVE Anton Nijholt

    E-Print Network [OSTI]

    Nijholt, Anton

    as animated cartoon characters or animated objects resembling human beings. Sometimes they just consist that should be taken to make 2D and 3D guides on webpages and in (augmented) virtual reality environments more and have to interact with the user or a visitor of an environment. What does the virtual guide know about

  12. A Painting Interface for Interactive Surface Deformations

    E-Print Network [OSTI]

    A Painting Interface for Interactive Surface Deformations Jason Lawrence a Thomas Funkhouser a a with a painting interface that gives the user direct, local control over a physical simulation. The "paint" a user- locity, the user can effect surface deformations. We have found that this painting metaphor gives

  13. ROMEAn interactive guide for families Artful Adventures

    E-Print Network [OSTI]

    Rowley, Clarence W.

    and turn to your right. Then make a left and walk through the doorway into the Roman gallery. J ANCIENTROMEAn interactive guide for families 56 Artful Adventures ANCIENT Your Roman Adventure Awaits You 753 B.C. to 476 A.D. At its height it spanned an area from present-day England to Iraq. The Roman

  14. Navigation Concepts for ZUIs Using Proxemic Interactions

    E-Print Network [OSTI]

    Deussen, Oliver

    Navigation Concepts for ZUIs Using Proxemic Interactions Roman Rädle, Simon Butscher, Stephan Huber of midas touch) Proxemics matrix (Picture of human + Axis and Angles) Left/Right Forward/Back Up/Down Head Butscher, 2012 #12;Demo in the Afternoon #12;Roman Rädle Roman.Raedle@uni-konstanz.de http

  15. Materials of interaction : responsive materials in the design of transformable interactive surfaces

    E-Print Network [OSTI]

    Coelho, Marcelo

    2008-01-01

    Materials that embody computational properties are reshaping the ways in which we design, interact and communicate. This thesis looks at the topic of form transformation and how to bring the programmability and versatility ...

  16. Interaction of Alamethicin Pores in DMPC Bilayers

    E-Print Network [OSTI]

    Doru Constantin; Guillaume Brotons; Ansgar Jarre; Chenghao Li; Tim Salditt

    2015-04-11

    We have investigated the x-ray scattering signal of highly aligned multilayers of the zwitterionic lipid 1,2-dimyristoyl-sn-glycero-3-phosphatidylcholine containing pores formed by the antimicrobial peptide alamethicin as a function of the peptide/lipid ratio. We are able to obtain information on the structure factor of the pore fluid, which then yields the interaction potential between pores in the plane of the bilayers. Aside from a hard core with a radius corresponding to the geometric radius of the pore, we find a repulsive lipid-mediated interaction with a range of $\\simeq 30$ {\\AA} and a contact value of 2.4 $k_BT$. This result is in qualitative agreement with recent theoretical models.

  17. Damped transverse oscillations of interacting coronal loops

    E-Print Network [OSTI]

    Soler, Roberto

    2015-01-01

    Damped transverse oscillations of magnetic loops are routinely observed in the solar corona. This phenomenon is interpreted as standing kink magnetohydrodynamic waves, which are damped by resonant absorption owing to plasma inhomogeneity across the magnetic field. The periods and damping times of these oscillations can be used to probe the physical conditions of the coronal medium. Some observations suggest that interaction between neighboring oscillating loops in an active region may be important and can modify the properties of the oscillations compared to those of an isolated loop. Here we theoretically investigate resonantly damped transverse oscillations of interacting non-uniform coronal loops. We provide a semi-analytic method, based on the T-matrix theory of scattering, to compute the frequencies and damping rates of collective oscillations of an arbitrary configuration of parallel cylindrical loops. The effect of resonant damping is included in the T-matrix scheme in the thin boundary approximation. ...

  18. Consistent interacting multi-graviton theories

    E-Print Network [OSTI]

    Idan Talshir

    2014-12-29

    We present a general model of interacting metric fields with the sum of Fierz-Pauli actions as its free limit.. These theories are energetically stable, i.e. their Hamiltonian is bounded from below and the multi-Minkowski metric configuration is the unique ground state. The model can be constructed even with the restriction of maximum two derivatives Lagrangian terms. The coupling can be made with an arbitrary number of metric fields on each vertex. The model is not based on some specific interaction structure that put extra constraints for the ghost degrees of freedom and thus avoids superluminal shock waves and causality problems subjected to these constraints. The dominant energy condition is maintained with respect to all metric fields for all field configurations.

  19. Momentum-space Argonne V18 interaction

    SciTech Connect (OSTI)

    Veerasamy, S.; Polyzou, W. N.

    2011-09-15

    This paper gives a momentum-space representation of the Argonne V18 potential as an expansion in products of spin-isospin operators with scalar coefficient functions of the momentum transfer. Two representations of the scalar coefficient functions for the strong part of the interaction are given. One is as an expansion in an orthonormal basis of rational functions and the other as an expansion in Chebyshev polynomials on different intervals. Both provide practical and efficient representations for computing the momentum-space potential that do not require integration or interpolation. Programs based on both expansions are available as supplementary material. Analytic expressions are given for the scalar coefficient functions of the Fourier transform of the electromagnetic part of the Argonne V18. A simple method for computing the partial-wave projections of these interactions from the operator expressions is also given.

  20. Dark matter interacts with variable vacuum energy

    E-Print Network [OSTI]

    Iván E. Sánchez G

    2014-09-21

    We investigate a spatially flat Friedmann-Robertson-Walker (FRW) scenario with two interacting components, dark matter and variable vacuum energy (VVE) densities, plus two decoupled components, one is a baryon term while the other behaves as a radiation component. We consider a linear interaction in the derivative dark component density. We apply the $\\chi^2$ method to the observational Hubble data for constraining the cosmological parameters and analyze the amount of dark energy in the radiation era for the model. It turns out that our model fulfills the severe bound of $\\Omega_{x}(z\\simeq 1100)energy at early times, and fulfills the stringent bound $\\Omega_{x}(z\\simeq 10^{10})today.

  1. Interaction between Injection Points during Hydraulic Fracturing

    E-Print Network [OSTI]

    Hals, Kjetil M D

    2012-01-01

    We present a model of the hydraulic fracturing of heterogeneous poroelastic media. The formalism is an effective continuum model that captures the coupled dynamics of the fluid pressure and the fractured rock matrix and models both the tensile and shear failure of the rock. As an application of the formalism, we study the geomechanical stress interaction between two injection points during hydraulic fracturing (hydrofracking) and how this interaction influences the fracturing process. For injection points that are separated by less than a critical correlation length, we find that the fracturing process around each point is strongly correlated with the position of the neighboring point. The magnitude of the correlation length depends on the degree of heterogeneity of the rock and is on the order of 30-45 m for rocks with low permeabilities. In the strongly correlated regime, we predict a novel effective fracture-force that attracts the fractures toward the neighboring injection point.

  2. Elastic interactions between 2D geometric defects

    E-Print Network [OSTI]

    Michael Moshe; Eran Sharon; Raz Kupferman

    2015-10-13

    In this paper, we introduce a methodology applicable to a wide range of localized two-dimensional sources of stress. This methodology is based on a geometric formulation of elasticity. Localized sources of stress are viewed as singular defects---point charges of the curvature associated with a reference metric. The stress field in the presence of defects can be solved using a scalar stress function that generalizes the classical Airy stress function to the case of materials with nontrivial geometry. This approach allows the calculation of interaction energies between various types of defects. We apply our methodology to two physical systems: shear-induced failure of amorphous materials and the mechanical interaction between contracting cells.

  3. The anisotropic distribution of the interacting electrons

    E-Print Network [OSTI]

    Boris Bondarev

    2013-01-21

    The distribution function for a system of interacting electrons in metals is multivalent in a certain region of wave vectors. One solution among many is isotropic. For other solutions the distribution of electrons over the wave vectors is anisotropic. In the simplest case, the anisotropy arises as a result of the repulsion between electrons in states with the wave vectors $\\bf k$ and $-\\hh\\bf k$.

  4. Transport calculations of antiproton-nucleus interactions

    E-Print Network [OSTI]

    A. B. Larionov; I. N. Mishustin; I. A. Pshenichnov; L. M. Satarov; W. Greiner

    2010-01-15

    The Giessen Boltzmann-Uehling-Uhlenbeck transport model is extended and applied to the antiproton-nucleus interactions in a wide beam momentum range. The model calculations are compared with the experimental data on $\\bar p$-absorption cross sections on nuclei with an emphasis on extraction of the real part of an antiproton optical potential. The possibility of the cold compression of a nucleus by an antiproton in-flight is also considered.

  5. Electromagnetic interactions at RHIC and LHC

    E-Print Network [OSTI]

    M. C. Guclu

    2008-11-15

    At LHC energies the Lorentz factor will be 3400 for the Pb + Pb collisions and the electromagnetic interactions will play important roles. Cross sections for the electromagnetic particle productions are very large and can not be ignored for the lifetimes of the beams and background. In this article, we are going to study some of the electromagnetic processes at RHIC and LHC and show the cross section calculations of the electron-positron pair production with the giant dipole resonance of the ions.

  6. On Principle of Universality of Gravitational Interactions

    E-Print Network [OSTI]

    I. B. Pestov

    2001-12-19

    In this work, the experiment is discussed on the verification of the principle of universality of gravitational interactions and some related problems of gravity theory and physics of elementary particles. The meaning of this proposal lies in the fact that the self-consistency of General Relativity, as it turns out, presuppose the existence of the nongravitating form of energy. Theory predicts that electrons are particles that transfer the nongravitating form of energy.

  7. Soft photon yield in nuclear interactions

    E-Print Network [OSTI]

    Kokoulina, E

    2015-01-01

    First results of study of a soft photon yield at Nuclotron (LHEP, JINR) in nucleus-nucleus collisions at 3.5 GeV per nucleon are presented. These photons are registered by an BGO electromagnetic calorimeter built by SVD-2 Collaboration. The obtained spectra confirm the excessive yield in the energy region less than 50 MeV in comparison with theoretical estimations and agree with previous experiments at high-energy interactions.

  8. Foundation of Hydrodynamics of Strongly Interacting Systems

    E-Print Network [OSTI]

    Cheuk-Yin Wong

    2014-04-03

    Hydrodynamics and quantum mechanics have many elements in common, as the density field and velocity fields are common variables that can be constructed in both descriptions. Starting with the Schroedinger equation and the Klein-Gordon for a single particle in hydrodynamical form, we examine the basic assumptions under which a quantum system of particles interacting through their mean fields can be described by hydrodynamics.

  9. Introduction to quantum field theory exhibiting interaction

    E-Print Network [OSTI]

    Glenn Eric Johnson

    2015-02-28

    This note is an introduction to methods of construction for Hilbert space realizations of relativistic quantum physics. The realizations satisfy a revision to Wightman's functional analytic axioms and exhibit interaction in physical spacetimes. The local commutativity, relativistic invariance, positive energy and Hilbert space realization axioms are satisfied. The revision eliminates conjecture that a real quantum field is necessarily a Hermitian Hilbert space operator. The resulting explicit scattering cross sections coincide with the first contributing order from Feynman series for a neutral scalar field.

  10. Foundation of Hydrodynamics of Strongly Interacting Systems

    SciTech Connect (OSTI)

    Wong, Cheuk-Yin

    2014-01-01

    Hydrodynamics and quantum mechanics have many elements in common, as the density field and velocity fields are common variables that can be constructed in both descriptions. Starting with the Schroedinger equation and the Klein-Gordon for a single particle in hydrodynamical form, we examine the basic assumptions under which a quantum system of particles interacting through their mean fields can be described by hydrodynamics.

  11. Hydrodynamic Interactions of Self-Propelled Swimmers

    E-Print Network [OSTI]

    John J. Molina; Yasuya Nakayama; Ryoichi Yamamoto

    2013-01-12

    The hydrodynamic interactions of a suspension of self-propelled particles are studied using a direct numerical simulation method which simultaneously solves for the host fluid and the swimming particles. A modified version of the "Smoothed Profile" method (SPM) is developed to simulate microswimmers as squirmers, which are spherical particles with a specified surface-tangential slip velocity between the particles and the fluid. This simplified swimming model allows one to represent different types of propulsion (pullers and pushers) and is thus ideal to study the hydrodynamic interactions among swimmers. We use the SPM to study the diffusive behavior which arises due to the swimming motion of the particles, and show that there are two basic mechanisms responsible for this phenomena: the hydrodynamic interactions caused by the squirming motion of the particles, and the particle-particle collisions. This dual nature gives rise to two distinct time- and length- scales, and thus to two diffusion coefficients, which we obtain by a suitable analysis of the swimming motion. We show that the collisions between swimmers can be interpreted in terms of binary collisions, in which the effective collision radius is reduced due to the collision dynamics of swimming particles in viscous fluids. At short time-scales, the dynamics of the swimmer is analogous to that of an inert tracer particle in a swimming suspension, in which the diffusive motion is caused by fluid-particle collisions. Our results, along with the simulation method we have introduced, will allow us to gain a better understanding of the complex hydrodynamic interactions of self-propelled swimmers.

  12. Understanding Interactions in Social Networks and Committee

    E-Print Network [OSTI]

    Bhattacharjee, Arnab; Holly, Sean

    on the magnitude and strength of spill-overs and interactions has been largely ignored. At the same time, such inferences are important in many applications, not least because they have structural interpretations and provide useful inter- pretation and structural... . The idea is that there are spillover e¤ects across the economic agents because of spatial or other forms of local cross section dependence. Panel data regression models with such spatially correlated error structures have been estimated using maximum...

  13. BETO Quiz - Interactive Content | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels DataEnergy Webinar:I DueBETO Quiz - Interactive Content BETO Quiz -

  14. Droplet structure interactions in direct containment heating

    SciTech Connect (OSTI)

    Baker, L. Jr.; Pilch, M.; Tarbell, W.W.

    1988-01-01

    Direct containment heating (DCH) in light water reactors can occur during severe accidents that involve the meltout of the bottom of the reactor vessel while the vessel is at high pressure. The ejected core debris can heat and pressurize the atmosphere and challenge the integrity of containment. The results of recent large-scale direct containment heating tests in the Surtsey facility at the Sandia National Laboratories have demonstrated the importance of the interactions of core debris with structure. In the DCH-2, -3, and -4 tests, > 50% of the simulated core debris injected into the large vessel was found frozen to the ceiling or sidewalls. This finding led to questions concerning the detailed physics of debris/structure interactions. It was expected that vigorous splashing assisted by gravity would have limited the quantity of frozen debris to much smaller amounts. Accordingly, a search of the technical literature was undertaken in the areas of liquid drop interactions with surfaces and with other liquid drops to provide the bases for modeling. The available information was reviewed for applicability to the DCH process. The results of the search and review led to a correlation for the splashing process and a preliminary explanation of the DCH test results in the form of illustrative models.

  15. ANTENNA-COUPLED LIGHT-MATTER INTERACTIONS

    SciTech Connect (OSTI)

    NOVOTNY, LUKAS

    2014-01-10

    This project is focused on antenna-coupled photon emission from single quantum emitters. The properties of optical antennas are tailored to control different photophysical parameters, such as the excited state lifetime, the saturation intensity, and the quantum yield [3]. Using a single molecule coupled to an optical antenna whose position and properties can be controllably adjusted we established a detailed and quantitative understanding of light-matter interactions in nanoscale environments. We have studied various quantum emitters: single molecules [11], quantum dots [7], rareearth ions [2], and NV centers in diamond [19]. We have systematically studied the interaction of these emitters with optical antennas. The overall objective was to establish a high-level of control over the light-matter interaction. In order to eliminate the coupling to the environment, we have taken a step further and explored the possibility of levitating the quantum emitter in high vacuum. What started as a side-project soon became a main activity in our research program and led us to the demonstration of vacuum trapping and cooling of a nanoscale particle [14].

  16. Interaction between two stopped light pulses

    SciTech Connect (OSTI)

    Chen, Yi-Hsin, E-mail: yhchen920@gmail.com; Lee, Meng-Jung, E-mail: yhchen920@gmail.com; Hung, Weilun, E-mail: yhchen920@gmail.com; Yu, Ite A., E-mail: yu@phys.nthu.edu.tw [Department of Physics and Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan (China); Chen, Ying-Cheng [Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan and Department of Physics and Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan (China); Chen, Yong-Fan [Department of Physics, National Cheng Kung University, Tainan 70101, Taiwan (China)

    2014-03-05

    The efficiency of a nonlinear optical process is proportional to the interaction time. We report a scheme of all-optical switching based on two motionless light pulses via the effect of electromagnetically induced transparency. One pulse was stopped as the stationary light pulse (SLP) and the other was stopped as stored light. The time of their interaction via the medium can be prolonged and, hence, the optical nonlinearity is greatly enhanced. Using a large optical density (OD) of 190, we achieved a very long interaction time of 6.9 ?s. This can be analogous to the scheme of trapping light pulses by an optical cavity with a Q factor of 8×10{sup 9}. With the approach of using moving light pulses in the best situation, a switch can only be activated at 2 photons per atomic absorption cross section. With the approach of employing a SLP and a stored light pulse, a switch at only 0.56 photons was achieved and the efficiency is significantly improved. Moreover, the simulation results are in good agreement with the experimental data and show that the efficiency can be further improved by increasing the OD of the medium. Our work advances the technology in quantum information manipulation utilizing photons.

  17. Intense Magnetized Plasma-Wall Interaction

    SciTech Connect (OSTI)

    Bauer, Bruno S.; Fuelling, Stephan

    2013-11-30

    This research project studied wall-plasma interactions relevant to fusion science. Such interactions are a critical aspect of Magneto-Inertial Fusion (MIF) because flux compression by a pusher material, in particular the metal for the liner approach to MIF, involves strong eddy current heating on the surface of the pusher, and probably interactions and mixing of the pusher with the interior fuel during the time when fusion fuel is being burned. When the pusher material is a metal liner, high-energy-density conditions result in fascinating behavior. For example, "warm dense matter" is produced, for which material properties such as resistivity and opacity are not well known. In this project, the transformation into plasma of metal walls subjected to pulsed megagauss magnetic fields was studied with an experiment driven by the UNR 1 MA Zebra generator. The experiment was numerically simulated with using the MHRDR code. This simple, fundamental high-energy-density physics experiment, in a regime appropriate to MIF, has stimulated an important and fascinating comparison of numerical modeling codes and tables with experiment. In addition, we participated in developing the FRCHX experiment to compress a field-reversed-configuration (FRC) plasma with a liner, in collaboration with researchers from Air Force Research Laboratory and Los Alamos National Lab, and we helped develop diagnostics for the Plasma Liner Experiment (PLX) at LANL. Last, but not least, this project served to train students in high-energy-density physics.

  18. Interaction and merging of two sinistral filaments

    SciTech Connect (OSTI)

    Jiang, Yunchun; Yang, Jiayan; Liu, Yu; Li, Haidong; Wang, Haimin; Ji, Haisheng; Li, Jianping

    2014-09-20

    In this paper, we report the interaction and subsequent merging of two sinistral filaments (F1 and F2) occurring at the boundary of AR 9720 on 2001 December 6. The two filaments were close and nearly perpendicular to each other. The interaction occurred after F1 was erupted and the eruption was impeded by a more extended filament channel (FC) standing in the way, in which F2 was embedded. The erupted material ran into FC along its axis, causing F1 and F2 to merge into a single structure that subsequently underwent a large-amplitude to-and-fro motion. A significant plasma heating process was observed in the merging process, making the mixed material largely disappear from the H? passband, but appear in Extreme Ultraviolet Telescope 195 Å images for a while. These observations can serve as strong evidence of merging reconnection between the two colliding magnetic structures. A new sinistral filament was formed along FC after the cooling of the merged and heated material. No coronal mass ejection was observed to be associated with the event; though, the eruption was accompanied by a two-ribbon flare with a separation motion, indicating that the eruption had failed. This event shows that, in addition to overlying magnetic fields, such an interaction is an effective restraint to make a filament eruption fail in this way.

  19. Pseudo-interactive monitoring in distributed computing

    SciTech Connect (OSTI)

    Sfiligoi, I.; /Fermilab; Bradley, D.; Livny, M.; /Wisconsin U., Madison

    2009-05-01

    Distributed computing, and in particular Grid computing, enables physicists to use thousands of CPU days worth of computing every day, by submitting thousands of compute jobs. Unfortunately, a small fraction of such jobs regularly fail; the reasons vary from disk and network problems to bugs in the user code. A subset of these failures result in jobs being stuck for long periods of time. In order to debug such failures, interactive monitoring is highly desirable; users need to browse through the job log files and check the status of the running processes. Batch systems typically don't provide such services; at best, users get job logs at job termination, and even this may not be possible if the job is stuck in an infinite loop. In this paper we present a novel approach of using regular batch system capabilities of Condor to enable users to access the logs and processes of any running job. This does not provide true interactive access, so commands like vi are not viable, but it does allow operations like ls, cat, top, ps, lsof, netstat and dumping the stack of any process owned by the user; we call this pseudo-interactive monitoring. It is worth noting that the same method can be used to monitor Grid jobs in a glidein-based environment. We further believe that the same mechanism could be applied to many other batch systems.

  20. Alien Species and Evolution: The Evolutionary Ecology of Exotic Plants, Animals, Microbes and Interacting Native Species

    E-Print Network [OSTI]

    Nehrbass, Nana

    2005-01-01

    of Exotic Plants, Animals, Microbes and Interacting Nativeof Exotic Plants, Animals, Microbes, and Interacting Native

  1. Interactions between non-physician clinicians and industry: a systematic review.

    E-Print Network [OSTI]

    Grundy, Q; Bero, L; Malone, R

    2013-01-01

    and management of industry interactions. Non-physician clinicians reported interacting with the pharmaceutical and

  2. INTRODUCTION Cetaceans (whales, dolphins and porpoises) are exceptional

    E-Print Network [OSTI]

    Fish, Frank

    contractions of muscles that insert on the rays embedded within the fins (Lauder, 2005; Fish and Lauder, 2006, retain several bones within the flipper, manipulate flow via coordinated contraction of muscles housed to distend (Lambertsen et al., 1995; Goldbogen et al., 2006, 2007). While the mouth closes, water is pushed

  3. Baleen whales host a unique gut microbiome with similarities...

    Office of Scientific and Technical Information (OSTI)

    independently even given an animal-derived diet, illustrating how diet and evolutionary history combine to shape microbial diversity in the mammalian gut. Authors: Sanders, Jon...

  4. Remote Sensing of Whales Using Thermal and Visual Imaging

    E-Print Network [OSTI]

    prospection, which both employ large acoustic sources. This research focused on design the development and night. SEMINAR To receive ORE Seminar announcements by e-mail, please visit http://www.ore.hawaii.edu/OE/ore_news.htm MSB 114 Wednesday, February 26 3:00-3:30 pm Coffee Hour 3:30-4:30 pm Seminar Please join us

  5. Passenger Preferences for Whale Watching Tour Attributes and Payment

    E-Print Network [OSTI]

    coastal tourism activity in many regions across the globe. Worldwide, more people are participating me access to survey

  6. Social Context of Gray Whale Eschrichtius robustus Sound Activity 

    E-Print Network [OSTI]

    Charles, Sarah

    2012-07-16

    -distance communication, as startle responses, or "precursors" to the adult repertoire. Frequency-related parameters of all sound classes showed variation among social contexts, but duration demonstrated very little variation. Calf-containing contexts exhibited greatest...

  7. Japanese Whale Fishery Extension Explored Recent NMFS Scientific Publications

    E-Print Network [OSTI]

    Publications NOAA Technical Report NMFS SSRF-687. Reintjes, John W., and Peggy M. Keney. "Annotated Bibli

  8. MIGRANT GRAY WHALES WITH CALVES AND SEXUAL BEHAVIOR OF

    E-Print Network [OSTI]

    , where the water depth is 12 m. Both calves appeared to nurse when the adults rolled. "Non-pregnant adult females regularly ovu- late in late November and early December ... while still north of central California on the southward migration [page 61]." and "Almost all of the adult females

  9. Recovery Plan for the North Pacific Right Whale

    E-Print Network [OSTI]

    of the Plan can be achieved only if a long-term commitment is made to support the actions recommended herein of the United States and other nations. Within the United States, the shared resources and cooperative Brownell, Jr., Kristine Petersen and Amy Scholik-Schlomer for technical review, and to peer reviewers who

  10. Early Evolution of Whales A Century of Research in Egypt

    E-Print Network [OSTI]

    Gingerich, Philip D.

    , and the innominates of Basilosaurus were mounted as if they still articu- lated with the vertebral column. Kellogg fossil to be studied scientifically was a very large vertebral centrum collected in 1832 near

  11. EMGRIE : Ergonomic Microgesture Recognition and Interaction Evaluation, a case study

    E-Print Network [OSTI]

    Way, David (David H.)

    2014-01-01

    Given the recent success of hand pose gesture recognition via wrist-worn camera based sensors, specific hand pose interaction evaluation is needed. In order to evaluate such interactions, we built EMGRIE: a quick-prototype ...

  12. Social Interactions and We-Intentions for Agrivisitors’ Service Encounters 

    E-Print Network [OSTI]

    Choo, Hyungsuk

    2010-10-12

    This study addresses how agrivisitors' social interactions affect satisfaction and, in turn, revisit intention. Adopting social exchange theory and resource theory, the study proposes that social interactions with service providers, local residents...

  13. HISTORY OF WEAK INTERACTIONS. | SciTech Connect

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

    HISTORY OF WEAK INTERACTIONS. Citation Details In-Document Search Title: HISTORY OF WEAK INTERACTIONS. You are accessing a document from the Department of Energy's (DOE) SciTech...

  14. Communication Patterns in Collaborative Peer Learning around Interactive Tables

    E-Print Network [OSTI]

    Subramanian, Sriram

    @cs.bris.ac.uk Mark T. Marshall Interaction & Graphics University of Bristol, UK mark@cs.bris.ac.uk Sriram Subramanian Interaction & Graphics University of Bristol, UK sriram@cs.bris.ac.uk Abstract Despite many advances

  15. Tabletops and Therapeutic Interactions David Coyle, Izdihar Jamil, Sriram Subramanian

    E-Print Network [OSTI]

    Subramanian, Sriram

    Tabletops and Therapeutic Interactions David Coyle, Izdihar Jamil, Sriram Subramanian Interaction.Jamil@bris.ac.uk, sriram@cs.bris.ac.uk ABSTRACT Writing in 1957 Carl Rogers, a pioneer of person-centred therapy

  16. Human-automation interaction for lunar landing aimpoint redesignation

    E-Print Network [OSTI]

    Needham, Jennifer M

    2008-01-01

    Human-automation interactions are a critical area of research in systems with modem automation. The decision-making portion of tasks presents a special challenge for human-automation interactions because of the many factors ...

  17. Investigation of Soil Moisture - Vegetation Interactions in Oklahoma 

    E-Print Network [OSTI]

    Ford, Trenton W.

    2013-03-06

    and-atmosphere interactions are an important component of climate, especially in semi-arid regions such as the Southern Great Plains. Interactions between soil moisture and vegetation modulate land-atmosphere coupling and thus represent a crucial...

  18. UNDERSTANDING OF JAPANESE IN AN INTERACTIVE PROGRAMMING SYSTEM

    E-Print Network [OSTI]

    UNDERSTANDING OF JAPANESE IN AN INTERACTIVE PROGRAMMING SYSTEM Kenji SugiyamaI, Masayuki Kameda, Nakahara-ku, Kawasaki 211, JAPAN ABSTRACT KIPS is an automatic programming system which generates standardized business application programs through interactive natural language dialogue. KIPS models

  19. Computational approaches for identifying inhibitors of protein interactions 

    E-Print Network [OSTI]

    Mehio, Wissam

    2011-06-27

    Inter-molecular interaction is at the heart of biological function. Proteins can interact with ligands, peptides, small molecules, and other proteins to serve their structural or functional purpose. With advances in ...

  20. Using Light to Control How X Rays Interact with Matter

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

    Using Light to Control How X Rays Interact with Matter Using Light to Control How X Rays Interact with Matter Print Wednesday, 27 January 2010 00:00 Schemes that use one light...

  1. Using Light to Control How X Rays Interact with Matter

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

    Using Light to Control How X Rays Interact with Matter Print Schemes that use one light pulse to manipulate interactions of another with matter are well developed in the...

  2. Directing Exploratory Search with Interactive Intent Tuukka Ruotsalo1,

    E-Print Network [OSTI]

    Kaski, Samuel

    . [Information Search and Retrieval]: Miscellaneous General Terms Search User Interfaces, Search IntentDirecting Exploratory Search with Interactive Intent Modeling Tuukka Ruotsalo1, , Jaakko Peltonen1 introduce interactive intent modeling, where the user directs exploratory search by providing feedback

  3. Authoring and Presentation Tools for Distance Learning over Interactive TV

    E-Print Network [OSTI]

    Erdem, Cigdem Eroglu

    questions into interactive exams, and a virtual teacher whose facial animation is automatically generated]: Multimedia Information Systems ­ animations, evaluation/methodology, video. General Terms Management, Design, Human Factors. Keywords Distance education, interactive TV, set-top-box, multimedia presentation. 1

  4. A Prototypical Interactive exhibition for the Archaeological Museum of

    E-Print Network [OSTI]

    Zabulis, Xenophon

    Macedonia, named "Macedonia from fragments to pixels". The exhibition comprises seven interactive systems of prototypical interactive systems with subjects drawn from ancient Macedonia, named "Macedonia from fragments objects from the Museum's permanent collection and from ancient Macedonia in general. Several

  5. The experimental setup of the Interaction in Crystals for Emission...

    Office of Scientific and Technical Information (OSTI)

    high intensity sources via the coherent interactions with crystals in the sub-GeV energy range has been proved by the ICE-RAD (Interaction in Crystals for Emission of...

  6. Collaborative Interaction with Volumetric Displays Tovi Grossman, Ravin Balakrishnan

    E-Print Network [OSTI]

    Toronto, University of

    Collaborative Interaction with Volumetric Displays Tovi Grossman, Ravin Balakrishnan Department Volumetric displays possess a number of unique properties which potentially make them particularly suitable for volumetric displays. Author Keywords Volumetric displays, collaborative interaction. ACM Classification

  7. Effective dipole-dipole interactions in multilayered dipolar Bose ...

    E-Print Network [OSTI]

    2013-07-10

    Jul 10, 2013 ... for weakly interacting BECs at zero temperature [54]. We ... a transversely homogeneous BEC with contact interaction, ... as a function of the number of lattice sites and polarization ... imuthal and polar angles, respectively.

  8. Hydrogen production during fragmented debris/concrete interactions. [PWR; BWR

    SciTech Connect (OSTI)

    Tarbell, W.W.; Blose, R.E.

    1982-01-01

    In the unlikely event that molten core debris escapes the reactor pressure vessel, the interactions of the debris with concrete and structural materials become the driving forces for severe accident phenomena. The Ex-vessel Core Debris Interactions Program at Sandia Laboratories is a research effort to characterize the nature of these interactions and the magnitude of safety-related phenomena such as hydrogen generation, aerosol production, and fission product release that arise because of the melt/concrete interactions.

  9. RAWS: Collective interactions and data transfers

    SciTech Connect (OSTI)

    Fasel, P.K. (Pat K.); Keahey, K. (Katarzyna); Mniszewski, S. M. (Susan M.)

    2001-01-01

    Most high performance scientific components or applications are implemented as parallel programs operating on physically or logically distributed data. As we consider the interaction between such components two major issues arise: (1) the definition of what exactly it means for two parallel components to interact, for example in terms of synchronization, and (2) how those components can most efficiently exchange the distributed data they operate on. Since both are common and important significant efforts have been expanded to implement them efficiently. Many of those efforts were, and still are, undertaken by applications developers (see [Cou99] for an example). Several attempts have been made to develop generic frameworks solving this problem; [FKKCSCi, KG97a, BFHM98, GKP971] have all addressed its aspects. Unfortunately, all of these solutions are limited to a set of applications that have fallen within the scope of experience of their developers, and therefore none of them have been fully successful in providing a general solution. Several factors influence the difficulty of producing a general solution. First, data redistribution depends on data representation which in applications is very often specific to an application. Therefore developing a standardized solution for distributed data transfer depends on developing a standardized data representation. Further, different systems assume different transfer logistics, such as timing of transfer, locking of data, and synchronization assumptions. Finally, the shape of abstractions in different systems depends on time and tolerance of different users. The Common Component Architecture (CCA) effort is promising with respect to addressing these challenges as it has already introduced a standardized system of interactions [AGG+99] and is in the process of defining standardized representations for distributed data. Furthermore, CCA builds on the sum of experiences of its participants. In this paper we summarize our most recent contributions to the CCA design process related to the interactions of parallel components, called collective components. We introduce the notion of a collectible port which is an extension of the CCA ports [AGG+99] and allows collective components to interact as one entity. This is a functionality not found in other existing standards of the day such as [OMG95, Ses97] and represents a significant extension of these standards. The usefulness and efficiency of similar abstractions has been shown in [KG97a, KG97b]. The abstraction described here, extends them in that it allows the programmer to define the performance/utility trade-off of his or her choice. We further describe a class of translation components, which translate between the distributed data format used by one parallel implementation, to that used by another. A well known example of such components is the MxN component which translates between data distributed on M processors to data distributed on N processors. We described its implementation in PAWS, and the supporting data structures. We also present a mechanism allowing the framework to invoke this component on the programmer's behalf whenever such translation is necessary freeing the programmer from treating collective component interactions as a special case. In doing that we introduce user-defined distributed type casts. Finally, we discuss our initial experiments in building complex translation components out of atomic functionalities. Since PAWS assumes a distributed memory model, our experiments are limited to dense rectilinear data. We describe a PAWS application to illustrate the results of this discussion.

  10. Shybot: Friend-Stranger Interaction for Children Living with Autism

    E-Print Network [OSTI]

    Shybot: Friend-Stranger Interaction for Children Living with Autism Abstract This paper presents this simple social interaction to open up a new direction for intervention for children living with autism. We hope that from minimal social interaction, a child with autism or social anxiety disorders could

  11. A Brief History of Human Computer Interaction Technology

    E-Print Network [OSTI]

    A Brief History of Human Computer Interaction Technology Brad A. Myers December, 1996 CMU­CS­96 development of major advances in human­ computer interaction technology, emphasizing the pivotal role, of NCCOSC or the U.S. Government. #12; Keywords: Human Computer Interaction, History, User Interfaces

  12. The Computational Power of Interactive Recur-rent Neural Networks

    E-Print Network [OSTI]

    Siegelmann , Hava T

    1 The Computational Power of Interactive Recur- rent Neural Networks J´er´emie Cabessa1 and Hava T, interactive computation, analog computation, re- current neural networks, interactive Turing machines-weighted recurrent neural networks were shown to be respectively equivalent to and strictly more powerful than

  13. Lieb-Thirring Bounds for Interacting Bose Gases

    E-Print Network [OSTI]

    Douglas Lundholm; Fabian Portmann; Jan Philip Solovej

    2015-02-02

    We study interacting Bose gases and prove lower bounds for the kinetic plus interaction energy of a many-body wave function in terms of its particle density. These general estimates are then applied to various types of interactions, including hard sphere (in 3D) and hard disk (in 2D) as well as a general class of homogeneous potentials.

  14. BOTANICUS INTERACTICUS: Interactive Plants Technology Ivan Poupyrev 1

    E-Print Network [OSTI]

    Poupyrev, Ivan

    BOTANICUS INTERACTICUS: Interactive Plants Technology Ivan Poupyrev 1 , Philipp Schoessler 2 is a technology for designing highly ex- pressive interactive plants, both living and artificial. We are moti? Figure 1. Top: Precise and playful interaction with living plants; Bottom: Design of biologically

  15. Interactive Data Mining Considered Harmful (If Done Wrong)

    E-Print Network [OSTI]

    Waldmann, Uwe

    Interactive Data Mining Considered Harmful (If Done Wrong) Pauli Miettinen Max-Planck-Institut für Informatik Saarbrücken, Germany pauli.miettinen@mpi-inf.mpg.de ABSTRACT Interactive data mining can, there is a serious risk that the user of powerful interactive data mining tools will only find the results she

  16. A taxonomy for identifying requirement interactions in software systems

    E-Print Network [OSTI]

    Eberlein, Armin

    A taxonomy for identifying requirement interactions in software systems Mohamed Shehata a taxonomy for classifying and identifying requirement interactions in software systems. The proposed taxonomy is in the form of a four-layered pyramid that defines 6 Main Interaction Categories in the first

  17. Classifying Human-Robot Interaction: An Updated Taxonomy*

    E-Print Network [OSTI]

    Yanco, Holly A.

    Classifying Human-Robot Interaction: An Updated Taxonomy* Holly A. Yanco Computer Science-7803-8566-7/04/$20.00 2004 IEEE. Abstract - This paper extends a taxonomy of human- robot interaction (HRI) introduced taxonomy. New classifications include measures of the social nature of the task (human interaction roles

  18. You are What You Eat! Tracking Health Through Recipe Interactions

    E-Print Network [OSTI]

    Bellogin, Alejandro

    You are What You Eat! Tracking Health Through Recipe Interactions Alan Said TU, recipe recommender systems are attracting many users looking for inspi- ration on the next thing' interactions with recipes (ratings) on the online social network Allrecipes.com. We compare the interaction

  19. Ozone climatology using interactive chemistry: results from the Canadian

    E-Print Network [OSTI]

    Wirosoetisno, Djoko

    Ozone climatology using interactive chemistry: results from the Canadian Middle Atmosphere Model., Medvedev, A. S. and Shepherd, T. G. (2000) Ozone climatology using interactive chemistry: results from RESEARCH, VOL. 105,NO. D21, PAGES 26,475-26,491,NOVEMBER 16, 2000 Ozone climatology using interactive

  20. VISUAL ASSISTANCE TOOLS FOR INTERACTIVE VISUALIZATION OF REMOTE SENSING DATA

    E-Print Network [OSTI]

    Blanz, Volker

    VISUAL ASSISTANCE TOOLS FOR INTERACTIVE VISUALIZATION OF REMOTE SENSING DATA Martin Lambers to interactive visualization of remote sensing data. Index Terms-- Visualization 1. INTRODUCTION Interactive visualization of remote sensing data gives the user much control over the visualization result. In the ideal

  1. AUI: A Programming Language for Developing Plastic Interactive Software

    E-Print Network [OSTI]

    Cordy, James R.

    AUI: A Programming Language for Developing Plastic Interactive Software Kevin A. Schneider is said to be `plastic'. This paper introduces the AUI programming language that was designed specifically to support the development of plastic interactive software. An AUI program describes the abstract interaction

  2. Interaction Techniques with Virtual Humans in Mixed Environments

    E-Print Network [OSTI]

    Kallmann, Marcelo

    animation have led to the integration of Virtual Humans [9] into interactive 3D environments. With emergeInteraction Techniques with Virtual Humans in Mixed Environments Selim Balcisoy, Marcelo Kallmann use virtual humans as mediators between the real and virtual world. Keywords: Interaction Techniques

  3. Spatial Adiabatic Passage for Interacting Particles

    E-Print Network [OSTI]

    Gillet, Jeremie; Busch, Thomas

    2015-01-01

    Control over the quantum state of interacting particles to a high degree of fidelity is an important ability to have in the quest for understanding fundamental properties of non-classical states. However, the quickly increasing density of the spectrum, together with the appearance of crossings in time-dependent processes, makes any effort to control the system hard and resource intensive. Here we show that in trapped systems regimes can exist, in which isolated energy bands appear that allow to easily generalize known single-particle techniques. We demonstrate this for the well known spatial adiabatic passage effect, which can control the centre-of-mass state of atoms with high fidelity.

  4. Spatial Adiabatic Passage for Interacting Particles

    E-Print Network [OSTI]

    Jeremie Gillet; Albert Benseny; Thomas Busch

    2015-05-15

    Control over the quantum state of interacting particles to a high degree of fidelity is an important ability to have in the quest for understanding fundamental properties of non-classical states. However, the quickly increasing density of the spectrum, together with the appearance of crossings in time-dependent processes, makes any effort to control the system hard and resource intensive. Here we show that in trapped systems regimes can exist, in which isolated energy bands appear that allow to easily generalize known single-particle techniques. We demonstrate this for the well known spatial adiabatic passage effect, which can control the centre-of-mass state of atoms with high fidelity.

  5. Peppytides: Interactive Models of Polypeptide Chains

    ScienceCinema (OSTI)

    Zuckermann, Ron; Chakraborty, Promita; Derisi, Joe

    2014-10-28

    Peppytides are scaled, 3D-printed models of polypeptide chains that can be folded into accurate protein structures. Designed and created by Berkeley Lab Researcher, Promita Chakraborty, and Berkeley Lab Senior Scientist, Dr. Ron Zuckermann, Peppytides are accurate physical models of polypeptide chains that anyone can interact with and fold intro various protein structures - proving to be a great educational tool, resulting in a deeper understanding of these fascinating structures and how they function. Build your own Peppytide model and learn about how nature's machines fold into their intricate architectures!

  6. Spectral analysis of slender tensioned cylinder interaction 

    E-Print Network [OSTI]

    Diao, Weiguo

    1998-01-01

    the coefficient k, and c, are constants: Case I The Duffing nonlinear system is defined by p(u, u, t) =k, u'(t) Case 2 The Van der Pol nonlinear system is defined by (60) p(u, u, t)= ? ? u (t)= c, u (t)u(t) c, c 3 Ct (6l) Case 3 The combined Duffing-Van der... models, the Duffing model, the Van Der Pol model and a combination model will be examined using the test data obtained in the study by Rijken (1997). By developing a better understanding of the interactive behavior between two tensioned tandem...

  7. Peppytides: Interactive Models of Polypeptide Chains

    SciTech Connect (OSTI)

    Zuckermann, Ron; Chakraborty, Promita; Derisi, Joe

    2014-01-21

    Peppytides are scaled, 3D-printed models of polypeptide chains that can be folded into accurate protein structures. Designed and created by Berkeley Lab Researcher, Promita Chakraborty, and Berkeley Lab Senior Scientist, Dr. Ron Zuckermann, Peppytides are accurate physical models of polypeptide chains that anyone can interact with and fold intro various protein structures - proving to be a great educational tool, resulting in a deeper understanding of these fascinating structures and how they function. Build your own Peppytide model and learn about how nature's machines fold into their intricate architectures!

  8. Neutron scattering and extra short range interactions

    E-Print Network [OSTI]

    V. V. Nesvizhevsky; G. Pignol; K. V. Protasov

    2007-11-14

    The available data on neutron scattering were analyzed to constrain a hypothetical new short-range interaction. We show that these constraints are several orders of magnitude better than those usually cited in the range between 1 pm and 5 nm. This distance range occupies an intermediate space between collider searches for strongly coupled heavy bosons and searches for new weak macroscopic forces. We emphasise the reliability of the neutron constraints in so far as they provide several independent strategies. We have identified the most promising way to improve them.

  9. The interaction of plasma proteins with polymers 

    E-Print Network [OSTI]

    Elkarmi, Ali Zuhair

    1984-01-01

    computer code developed by Magnuson, et al. (1984) based on the Wielopolski approach [46] was used in calculating the solid angle for this experimental arrangement. 1v) Detector-Electronics Effic1ency: It is not certain that a particle will be counted..., density and size of detector material, b) type and energy of radiat1on, c) the electronic system used. The first two factors determ1ne the intrinsic effic1ency of 31 the detector, i. e. , the interactions that take place in the detector material...

  10. Entanglement replication via quantum repeated interactions

    E-Print Network [OSTI]

    Pierre Wendenbaum; Thierry Platini; Dragi Karevski

    2015-04-28

    We study entanglement creation between two independent XX chains, which are repeatedly coupled locally to spin-1/2 Bell pairs. We show analytically that in the steady state the entanglement of the Bell pairs is perfectly transferred to the chains, generating large-scale interchain pair correlations. However, before the steady state is reached, within a growing causal region around the interacting locus the chains are found in a current driven nonquilibrium steady state (NESS). In the NESS, the chains cross entanglement decays exponentially with respect to the distance to the boundary sites with a typical length scale which is inversely proportional to the driving current.

  11. ERROR ANALYSIS OF COMPOSITE SHOCK INTERACTION PROBLEMS.

    SciTech Connect (OSTI)

    LEE,T.MU,Y.ZHAO,M.GLIMM,J.LI,X.YE,K.

    2004-07-26

    We propose statistical models of uncertainty and error in numerical solutions. To represent errors efficiently in shock physics simulations we propose a composition law. The law allows us to estimate errors in the solutions of composite problems in terms of the errors from simpler ones as discussed in a previous paper. In this paper, we conduct a detailed analysis of the errors. One of our goals is to understand the relative magnitude of the input uncertainty vs. the errors created within the numerical solution. In more detail, we wish to understand the contribution of each wave interaction to the errors observed at the end of the simulation.

  12. An investigation into the role of protein-ligand interactions on obligate and transient protein-protein interactions 

    E-Print Network [OSTI]

    Quinlan, Robert Jason

    2005-02-17

    Protein-ligand and protein-protein interactions are critical to cellular function. Most cellular metabolic and signal tranduction pathways are influenced by these interactions, consequently molecular level understanding ...

  13. Nantucket Sleighride: An exhibit on Whales and Whaling from the Department of Special Collections, Kenneth Spencer Research Library

    E-Print Network [OSTI]

    Haines, Sally

    2012-12-01

    NANTUCKET SLEIGHRIDE Catalog of an exhibition by Sally Haines 2nd edition, revised, enlarged and improved December 2012 INTRODUCTION In a curious preamble to his novel Moby-Dick, Herman Melville gives us Extracts “supplied by a Sub... walked into the Spencer Library’s exhibit area on that day of the opening of Nantucket Sleighride you might have thought you’d wandered by mistake into an aquarium. In the shadows behind this aquarium’s glass, absent the salt water (bad for books...

  14. Turbulence-chemistry interactions in reacting flows

    SciTech Connect (OSTI)

    Barlow, R.S.; Carter, C.D. [Sandia National Laboratories, Livermore, CA (United States)

    1993-12-01

    Interactions between turbulence and chemistry in nonpremixed flames are investigated through multiscalar measurements. Simultaneous point measurements of major species, NO, OH, temperature, and mixture fraction are obtained by combining spontaneous Raman scattering, Rayleigh scattering, and laser-induced fluorescence (LIF). NO and OH fluorescence signals are converted to quantitative concentrations by applying shot-to-shot corrections for local variations of the Boltzmann fraction and collisional quenching rate. These measurements of instantaneous thermochemical states in turbulent flames provide insights into the fundamental nature of turbulence-chemistry interactions. The measurements also constitute a unique data base for evaluation and refinement of turbulent combustion models. Experimental work during the past year has focused on three areas: (1) investigation of the effects of differential molecular diffusion in turbulent combustion: (2) experiments on the effects of Halon CF{sub 3}Br, a fire retardant, on the structure of turbulent flames of CH{sub 4} and CO/H{sub 2}/N{sub 2}; and (3) experiments on NO formation in turbulent hydrogen jet flames.

  15. Species interactions differ in their genetic robustness

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

    Chubiz, Lon M.; Granger, Brian R.; Segre, Daniel; Harcombe, William R.

    2015-04-14

    Conflict and cooperation between bacterial species drive the composition and function of microbial communities. Stability of these emergent properties will be influenced by the degree to which species' interactions are robust to genetic perturbations. We use genome-scale metabolic modeling to computationally analyze the impact of genetic changes when Escherichia coli and Salmonella enterica compete, or cooperate. We systematically knocked out in silico each reaction in the metabolic network of E. coli to construct all 2583 mutant stoichiometric models. Then, using a recently developed multi-scale computational framework, we simulated the growth of each mutant E. coli in the presence of S.more »enterica. The type of interaction between species was set by modulating the initial metabolites present in the environment. We found that the community was most robust to genetic perturbations when the organisms were cooperating. Species ratios were more stable in the cooperative community, and community biomass had equal variance in the two contexts. Additionally, the number of mutations that have a substantial effect is lower when the species cooperate than when they are competing. In contrast, when mutations were added to the S. enterica network the system was more robust when the bacteria were competing. These results highlight the utility of connecting metabolic mechanisms and studies of ecological stability. Cooperation and conflict alter the connection between genetic changes and properties that emerge at higher levels of biological organization.« less

  16. Molecular Motors Interacting with Their Own Tracks

    E-Print Network [OSTI]

    Max N. Artyomov; Alexander Yu. Morozov; Anatoly B. Kolomeisky

    2007-12-20

    Dynamics of molecular motors that move along linear lattices and interact with them via reversible destruction of specific lattice bonds is investigated theoretically by analyzing exactly solvable discrete-state ``burnt-bridge'' models. Molecular motors are viewed as diffusing particles that can asymmetrically break or rebuild periodically distributed weak links when passing over them. Our explicit calculations of dynamic properties show that coupling the transport of the unbiased molecular motor with the bridge-burning mechanism leads to a directed motion that lowers fluctuations and produces a dynamic transition in the limit of low concentration of weak links. Interaction between the backward biased molecular motor and the bridge-burning mechanism yields a complex dynamic behavior. For the reversible dissociation the backward motion of the molecular motor is slowed down. There is a change in the direction of the molecular motor's motion for some range of parameters. The molecular motor also experiences non-monotonic fluctuations due to the action of two opposing mechanisms: the reduced activity after the burned sites and locking of large fluctuations. Large spatial fluctuations are observed when two mechanisms are comparable. The properties of the molecular motor are different for the irreversible burning of bridges where the velocity and fluctuations are suppressed for some concentration range, and the dynamic transition is also observed. Dynamics of the system is discussed in terms of the effective driving forces and transitions between different diffusional regimes.

  17. Interaction of cadmium with phosphate on goethite

    SciTech Connect (OSTI)

    Venema, P.; Hiemstra, T.; Riemsdijk, W.H. van

    1997-08-01

    Interactions between different ions are of importance in understanding chemical processes in natural systems. In this study simultaneous adsorption of phosphate and cadmium on goethite is studied in detail. The charge distribution (CD)-multisite complexation (MUSIC) model has been successful in describing extended data sets of cadmium adsorption and phosphate adsorption on goethite. In this study, the parameters of this model for these two data sets were combined to describe a new data set of simultaneous adsorption of cadmium and phosphate on goethite. Attention is focused on the surface speciation of cadmium. With the extra information that can be obtained from the interaction experiments, the cadmium adsorption model is refined. For a perfect description of the data, the singly coordinated surface groups at the 110 face of goethite were assumed to form both monodentate and bidentate surface species with cadmium. The CD-MUSIC model is able to describe data sets of both simultaneous and single adsorption of cadmium and phosphate with the same parameters. The model calculations confirmed the idea that only singly coordinated surface groups are reactive for specific ion binding.

  18. Chemical Reaction due to Stronger Ramachandran Interaction

    E-Print Network [OSTI]

    Andrew Das Arulsamy

    2013-12-26

    The origin of a chemical reaction between two reactant atoms is associated to the activation energy, with the assumption that, high-energy collisions between these atoms, are the ones that overcome the activation energy. Here, we (i) show that a stronger attractive van der Waals (vdW) and electron-ion Coulomb interactions between two polarized atoms are responsible to initiate a chemical reaction, either before or after the collision. We derive this stronger vdW attraction formula exactly using the quasi one-dimensional Drude model within the ionization energy theory and the energy-level spacing renormalization group method. Along the way, we (ii) expose the precise physical mechanism responsible for the existence of a stronger vdW interaction for both long and short distances, and also show how to technically avoid the electron-electron Coulomb repulsion between polarized electrons from these two reactant atoms. Finally, we properly and correctly associate the existence of this stronger attraction to Ramachandran's 'normal limits' (distance shorter than what is allowed by the standard vdW bond) between chemically nonbonded atoms.

  19. Species interactions differ in their genetic robustness

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

    Chubiz, Lon M. [Univ. of Missouri - St. Louis, St. Louis, MO (United States); Granger, Brian R. [Boston Univ., MA (United States); Segre, Daniel [Boston Univ., MA (United States); Harcombe, William R. [Univ. of Minnesota, St. Paul, MN (United States)

    2015-04-14

    Conflict and cooperation between bacterial species drive the composition and function of microbial communities. Stability of these emergent properties will be influenced by the degree to which species' interactions are robust to genetic perturbations. We use genome-scale metabolic modeling to computationally analyze the impact of genetic changes when Escherichia coli and Salmonella enterica compete, or cooperate. We systematically knocked out in silico each reaction in the metabolic network of E. coli to construct all 2583 mutant stoichiometric models. Then, using a recently developed multi-scale computational framework, we simulated the growth of each mutant E. coli in the presence of S. enterica. The type of interaction between species was set by modulating the initial metabolites present in the environment. We found that the community was most robust to genetic perturbations when the organisms were cooperating. Species ratios were more stable in the cooperative community, and community biomass had equal variance in the two contexts. Additionally, the number of mutations that have a substantial effect is lower when the species cooperate than when they are competing. In contrast, when mutations were added to the S. enterica network the system was more robust when the bacteria were competing. These results highlight the utility of connecting metabolic mechanisms and studies of ecological stability. Cooperation and conflict alter the connection between genetic changes and properties that emerge at higher levels of biological organization.

  20. High Temperature Interactions of Antimony with Nickel

    SciTech Connect (OSTI)

    Marina, Olga A.; Pederson, Larry R.

    2012-07-01

    In this chapter, the surface and bulk interactions of antimony with the Ni-based anodes in solid oxide fuel cells (SOFC) will be discussed. High fuel flexibility is a significant advantage of SOFCs, allowing the direct use of fossil and bio fuels without a hydrogen separation unit. Synthesis gas derived from coal and biomass consists of a mixture of hydrogen, carbon monoxide, carbon dioxide, and steam, but finite amounts of tars and trace impurities such as S, Se, P, As, Sb, Cd, Pb, Cl, etc, are also always present. While synthesis gas is commonly treated with a series of chemical processes and scrubbers to remove the impurities, complete purification is not economical. Antimony is widely distributed in coals. During coal gasification antimony is volatilized, such that contact with the SOFC anodes and other SOFC parts, e.g., interconnect, current collecting wires, fuel gas supplying tubing, is most likely. This chapter addresses the following topics: high temperature Ni - Sb interactions; alteration phase, Ni3Sb, Ni5Sb2, NiSb, formation; thermochemical modeling; impact of Sb on the electrocatalytic activity of Ni toward the fuel oxidation and the presence of other impurities (sulfur, in particular); converted anode structural instability during long-term SOFC operation; comparison with nickel heterogeneous catalysts.

  1. Universal Quantum Computation with the Exchange Interaction

    E-Print Network [OSTI]

    D. P. DiVincenzo; D. Bacon; J. Kempe; G. Burkard; K. B. Whaley

    2002-05-23

    Experimental implementations of quantum computer architectures are now being investigated in many different physical settings. The full set of requirements that must be met to make quantum computing a reality in the laboratory [1] is daunting, involving capabilities well beyond the present state of the art. In this report we develop a significant simplification of these requirements that can be applied in many recent solid-state approaches, using quantum dots [2], and using donor-atom nuclear spins [3] or electron spins [4]. In these approaches, the basic two-qubit quantum gate is generated by a tunable Heisenberg interaction (the Hamiltonian is $H_{ij}=J(t){\\vec S}_i\\cdot{\\vec S}_j$ between spins $i$ and $j$), while the one-qubit gates require the control of a local Zeeman field. Compared to the Heisenberg operation, the one-qubit operations are significantly slower and require substantially greater materials and device complexity, which may also contribute to increasing the decoherence rate. Here we introduce an explicit scheme in which the Heisenberg interaction alone suffices to exactly implement any quantum computer circuit, at a price of a factor of three in additional qubits and about a factor of ten in additional two-qubit operations. Even at this cost, the ability to eliminate the complexity of one-qubit operations should accelerate progress towards these solid-state implementations of quantum computation.

  2. Interaction of membrane-spanning proteins with peripheral and lipid-anchored membrane proteins: perspectives from protein lipid interactions (Review)

    E-Print Network [OSTI]

    Kleinschmidt, Jörg H.

    Interaction of membrane-spanning proteins with peripheral and lipid-anchored membrane proteins: perspectives from protein ± lipid interactions (Review) D. Marsh{*, L. I. HorvaÂth{, M. J. Swamy}, S ± protein interactions in double-reconstituted systems involving both integral and peripheral or lipid

  3. Sensor Signals for Interaction This is a brief tutorial on algorithms for processing sensor signals. When developing interactive

    E-Print Network [OSTI]

    Olsen Jr., Dan R.

    Sensor Signals for Interaction This is a brief tutorial on algorithms for processing sensor signals for performing the recognition at interactive speeds. Signal processing vs. interaction The topics covered in this tutorial traditionally fall under signal processing. Some of the techniques described are drawn from signal

  4. Submission to Joint sOc-EUSAI conference Grenoble, October 2005 Interacting with the Ubiquitous Computer Towards Embedding Interaction

    E-Print Network [OSTI]

    with the Ubiquitous Computer ­Towards Embedding Interaction Albrecht Schmidt, Matthias Kranz, Paul Holleis Embedded advances in technology the vision of ubiquitous computing ­ from a user perspective ­ is not yet achieved. In this paper we look at new forms of interaction that will help to interact with the ubiquitous computer

  5. Ising interaction between capacitively-coupled superconducting flux qubits

    E-Print Network [OSTI]

    Takahiko Satoh; Yuichiro Matsuzaki; Kosuke Kakuyanagi; Koichi Semba; Hiroshi Yamaguchi; Shiro Saito

    2015-01-30

    Here, we propose a scheme to generate a controllable Ising interaction between superconducting flux qubits. Existing schemes rely on inducting couplings to realize Ising interactions between flux qubits, and the interaction strength is controlled by an applied magnetic field On the other hand, we have found a way to generate an interaction between the flux qubits via capacitive couplings. This has an advantage in individual addressability, because we can control the interaction strength by changing an applied voltage that can be easily localized. This is a crucial step toward the realizing superconducting flux qubit quantum computation.

  6. Self-interaction corrections in density functional theory

    SciTech Connect (OSTI)

    Tsuneda, Takao; Hirao, Kimihiko

    2014-05-14

    Self-interaction corrections for Kohn-Sham density functional theory are reviewed for their physical meanings, formulations, and applications. The self-interaction corrections get rid of the self-interaction error, which is the sum of the Coulomb and exchange self-interactions that remains because of the use of an approximate exchange functional. The most frequently used self-interaction correction is the Perdew-Zunger correction. However, this correction leads to instabilities in the electronic state calculations of molecules. To avoid these instabilities, several self-interaction corrections have been developed on the basis of the characteristic behaviors of self-interacting electrons, which have no two-electron interactions. These include the von Weizsäcker kinetic energy and long-range (far-from-nucleus) asymptotic correction. Applications of self-interaction corrections have shown that the self-interaction error has a serious effect on the states of core electrons, but it has a smaller than expected effect on valence electrons. This finding is supported by the fact that the distribution of self-interacting electrons indicates that they are near atomic nuclei rather than in chemical bonds.

  7. Solvent-mediated interactions between nanoparticles at fluid interfaces

    E-Print Network [OSTI]

    F. Bresme; H. Lehle; M. Oettel

    2009-04-03

    We investigate the solvent mediated interactions between nanoparticles adsorbed at a liquid-vapor interface in comparison to the solvent mediated interactions in the bulk liquid and vapor phases of a Lennard-Jones solvent. Molecular dynamics simulation data for the latter are in good agreement with results from integral equations in the reference functional approximation and a simple geometric approximation. Simulation results for the solvent mediated interactions at the interface differ markedly from the interactions of the particles in the corresponding bulk phases. We find that at short interparticle distances the interactions are considerably more repulsive than those in either bulk phase. At long interparticle distances we find evidence for a long-ranged attraction. We discuss these observations in terms of interfacial interactions, namely, the three-phase line tension that would operate at short distances, and capillary wave interactions for longer interparticle distances.

  8. USING INTERACTION MATRICES TO DESCRIBEUSING INTERACTION MATRICES TO DESCRIBE RADIOCAESIUM MIGRATION IN GRASSLANDRADIOCAESIUM MIGRATION IN GRASSLAND

    E-Print Network [OSTI]

    Nacional de San Luis, Universidad

    - the components of the system are elements in the leading diagonal (i=j). - n(n-1) interaction terms (off diagonal,1: resuspension a3,2: rain splash, soil adhesion root uptake a3,4: soil vertical transport (difussion, convection

  9. CHEMICAL ASPECTS OF PELLET-CLADDING INTERACTION IN LIGHT WATER REACTOR FUEL ELEMENTS

    E-Print Network [OSTI]

    Olander, D.R.

    2010-01-01

    Tubing in Relation to the Pellet-Cladding Interaction010155 CHEMICAL ASPECTS OF PELLET-CLADDING INTERACTION INthe mechanical as­ pects of pellet-cladding interaction(PCI)

  10. Relative localization of point particle interactions

    E-Print Network [OSTI]

    José Ricardo Oliveira

    2011-10-25

    We review the main concepts of the recently introduced principle of relative locality and investigate some aspects of classical interactions between point particles from this new perspective. We start with a physical motivation and basic mathematical description of relative locality and review the treatment of a system of classical point particles in this framework. We then examine one of the unsolved problems of this picture, the apparent ambiguities in the definition of momentum constraints caused by a non-commutative and/or non-associative momentum addition rule. The gamma ray burst experiment is used as an illustration. Finally, we use the formalism of relative locality to reinterpret the well-known multiple point particle system coupled to 2+1 Einstein gravity, analyzing the geometry of its phase space and once again referring to the gamma ray burst problem as an example.

  11. Interactive software integrates geological and engineering data

    SciTech Connect (OSTI)

    Srivastava, G.S. (Oxy USA Inc., Tulsa, OK (United States))

    1994-09-05

    A comprehensive software package provides Oxy USA Inc. a set of interactive tools for rapid and easy integration of geological, geophysical, petrophysical, and reservoir engineering data for the purpose of reservoir characterization. The stacked curves system (SCPC), proprietary software of Oxy USA Inc., is used extensively within Occidental Petroleum Corp. to determine detailed knowledge of reservoir geometry and associated parameters crucial in infill drilling, field extension, and enhanced recovery projects. SCPC has all the desk top management and mapping software tools necessary to fully address, analyze, and resolve three components of reservoir characterization: defining the geometry; calculating reservoir properties; and making volumetric estimates. The paper discusses the background of the software, describes its functions of data base management and transformation, and explains the types of displays it is capable of producing.

  12. Coarse-grained distinguishability of field interactions

    E-Print Network [OSTI]

    Bény, Cédric

    2015-01-01

    Information-theoretical quantities such as statistical distinguishability typically result from optimisations over all conceivable observables. Physical theories, however, are not generally considered valid for all mathematically allowed measurements. For instance, quantum field theories are not meant to be correct or even consistent at arbitrarily small lengthscales. A general way of limiting such an optimisation to certain observables is to first coarse-grain the states by a quantum channel. We show how to calculate contractive quantum information metrics on coarse-grained equilibrium states of free bosonic systems (Gaussian states), in directions generated by arbitrary perturbations of the Hamiltonian. As an example, we study the Klein-Gordon field. If the phase-space resolution is coarse compared to h-bar, the various metrics become equal and the calculations simplify. In that context, we compute the scale dependence of the distinguishability of the quartic interaction.

  13. Coarse-grained distinguishability of field interactions

    E-Print Network [OSTI]

    Cédric Bény

    2015-09-10

    Information-theoretical quantities such as statistical distinguishability typically result from optimisations over all conceivable observables. Physical theories, however, are not generally considered valid for all mathematically allowed measurements. For instance, quantum field theories are not meant to be correct or even consistent at arbitrarily small lengthscales. A general way of limiting such an optimisation to certain observables is to first coarse-grain the states by a quantum channel. We show how to calculate contractive quantum information metrics on coarse-grained equilibrium states of free bosonic systems (Gaussian states), in directions generated by arbitrary perturbations of the Hamiltonian. As an example, we study the Klein-Gordon field. If the phase-space resolution is coarse compared to h-bar, the various metrics become equal and the calculations simplify. In that context, we compute the scale dependence of the distinguishability of the quartic interaction.

  14. Nonlinear Electromagnetic Interactions in Energetic Materials

    E-Print Network [OSTI]

    Wood, M A; Moore, D S

    2015-01-01

    We study the scattering of electromagnetic waves in anisotropic energetic materials. Nonlinear light-matter interactions in molecular crystals result in frequency-conversion and polarization changes. Applied electromagnetic fields of moderate intensity can induce these nonlinear effects without triggering chemical decomposition, offering a mechanism for non-ionizing identification of explosives. We use molecular dynamics simulations to compute such two-dimensional Raman spectra in the terahertz range for planar slabs made of PETN and ammonium nitrate. We discuss third-harmonic generation and polarization-conversion processes in such materials. These observed far-field spectral features of the reflected or transmitted light may serve as an alternative tool for stand-off explosive detection.

  15. Thermalization of gluon matter including ggggg interactions

    E-Print Network [OSTI]

    A. El; C. Greiner; Z. Xu

    2006-09-27

    Within a pQCD inspired kinetic parton cascade we simulate the space time evolution of gluons which are produced initially in a heavy ion collision at RHIC energy. The inelastic gluonic interactions $gg \\leftrightarrow ggg$ do play an important role: For various initial conditions it is found that thermalization and the close to ideal fluid dynamical behaviour sets in at very early times. Special emphasis is put on color glass condensate initial conditions and the `bottom up thermalization' scenario. Off-equilibrium $3\\to 2$ processes make up the very beginning of the evolution leading to an initial decrease in gluon number and a temporary avalanche of the gluon momentum distribution to higher transversal momenta.

  16. Laser-Nucleus Interactions: The Quasiadiabatic Regime

    E-Print Network [OSTI]

    Adriana Pálffy; Oliver Buss; Axel Hoefer; Hans A. Weidenmüller

    2015-06-12

    The interaction between nuclei and a strong zeptosecond laser pulse with coherent MeV photons is investigated theoretically. We provide a first semi-quantitative study of the quasiadiabatic regime where the photon absorption rate is comparable to the nuclear equilibration rate. In that regime, multiple photon absorption leads to the formation of a compound nucleus in the so-far unexplored regime of excitation energies several hundred MeV above the yrast line. The temporal dynamics of the process is investigated by means of a set of master equations that account for dipole absorption, stimulated dipole emission, neutron decay and induced fission in a chain of nuclei. That set is solved numerically by means of state-of-the-art matrix exponential methods also used in nuclear fuel burnup and radioactivity transport calculations. Our quantitative estimates predict the excitation path and range of nuclei reached by neutron decay and provide relevant information for the layout of future experiments.

  17. Modeling of particle interactions in magnetorheological elastomers

    SciTech Connect (OSTI)

    Biller, A. M., E-mail: kam@icmm.ru; Stolbov, O. V., E-mail: oleg100@gmail.com; Raikher, Yu. L., E-mail: raikher@icmm.ru [Institute of Continuous Media Mechanics, Ural Branch of Russian Academy of Sciences, Perm 614013 (Russian Federation)

    2014-09-21

    The interaction between two particles made of an isotropic linearly polarizable magnetic material and embedded in an elastomer matrix is studied. In this case, when an external field is imposed, the magnetic attraction of the particles, contrary to point dipoles, is almost wraparound. The exact solution of the magnetic problem in the linear polarization case, although existing, is not practical; to circumvent its use, an interpolation formula is proposed. One more interpolation expression is developed for the resistance of the elastic matrix to the field-induced particle displacements. Minimization of the total energy of the pair reveals its configurational bistability in a certain field range. One of the possible equilibrium states corresponds to the particles dwelling at a distance, the other—to their collapse in a tight dimer. This mesoscopic bistability causes magnetomechanical hysteresis which has important implications for the macroscopic behavior of magnetorheological elastomers.

  18. Community Structure in Interaction Web Service Networks

    E-Print Network [OSTI]

    Cherifi, Chantal

    2013-01-01

    Many real-world complex systems such as social, biological, information as well as technological systems results of a decentralized and unplanned evolution which leads to a common structuration. Irrespective of their origin, these so-called complex networks typically exhibit small-world and scale-free properties. Another common feature is their organisation into communities. In this paper, we introduce models of interaction networks based on the composition process of syntactic and semantic Web services. An extensive experimental study conducted on a benchmark of real Web services shows that these networks possess the typical properties of complex networks (small-world, scale-free). Unlike most social networks, they are not transitive. Using a representative sample of community detection algorithms, a community structuration is revealed. The comparative evaluation of the discovered community structures shows that they are very similar in terms of content. Furthermore, the analysis performed on the community s...

  19. Multi-transmission-line-beam interactive system

    E-Print Network [OSTI]

    Alexander Figotin; Guillermo Reyes

    2013-09-04

    We construct here a Lagrangian field formulation for a system consisting of an electron beam interacting with a slow-wave structure modeled by a possibly non-uniform multiple transmission line (MTL). In the case of a single line we recover the linear model of a traveling wave tube (TWT) due to J.R. Pierce. Since a properly chosen MTL can approximate a real waveguide structure with any desired accuracy, the proposed model can be used in particular for design optimization. Furthermore, the Lagrangian formulation provides for: (i) a clear identification of the mathematical source of amplification, (ii) exact expressions for the conserved energy and its flux distributions obtained from the Noether theorem. In the case of uniform MTLs we carry out an exhaustive analysis of eigenmodes and find sharp conditions on the parameters of the system to provide for amplifying regimes.

  20. Three regimes of relativistic beam - plasma interaction

    SciTech Connect (OSTI)

    Muggli, P.; Allen, B.; Fang, Y.; Yakimenko, V.; Babzien, M.; Kusche, K.; Fedurin, M.; Vieira, J.; Martins, J.; Silva, L.

    2012-12-21

    Three regimes of relativistic beam - plasma interaction can in principle be reached at the ATF depending on the relative transverse and longitudinal size of the electron bunch when compared to the cold plasma collisionless skin depth c?{omega}{sub pe}: the plasma wakefield accelerator (PWFA), the self-modulation instability (SMI), and the current filamentation instability (CFI) regime. In addition, by choosing the bunch density, the linear, quasi-nonlinear and non linear regime of the PWFA can be reached. In the case of the two instabilities, the bunch density determines the growth rate and therefore the occurrence or not of the instability. We briefly describe these three regimes and outline results demonstrating that all these regime have or will be reached experimentally. We also outline planned and possible follow-on experiments.

  1. Laser-Nucleus Interactions: The Quasiadiabatic Regime

    E-Print Network [OSTI]

    Pálffy, Adriana; Hoefer, Axel; Weidenmüller, Hans A

    2015-01-01

    The interaction between nuclei and a strong zeptosecond laser pulse with coherent MeV photons is investigated theoretically. We provide a first semi-quantitative study of the quasiadiabatic regime where the photon absorption rate is comparable to the nuclear equilibration rate. In that regime, multiple photon absorption leads to the formation of a compound nucleus in the so-far unexplored regime of excitation energies several hundred MeV above the yrast line. The temporal dynamics of the process is investigated by means of a set of master equations that account for dipole absorption, stimulated dipole emission, neutron decay and induced fission in a chain of nuclei. That set is solved numerically by means of state-of-the-art matrix exponential methods also used in nuclear fuel burnup and radioactivity transport calculations. Our quantitative estimates predict the excitation path and range of nuclei reached by neutron decay and provide relevant information for the layout of future experiments.

  2. Gravitational Interactions of Higher-Spin Fermions

    E-Print Network [OSTI]

    Marc Henneaux; Gustavo Lucena Gomez; Rakibur Rahman

    2014-09-14

    We investigate the cubic interactions of a massless higher-spin fermion with gravity in flat space and present covariant 2-s-s vertices, compatible with the gauge symmetries of the system, preserving parity. This explicit construction relies on the BRST deformation scheme that assumes locality and Poincare invariance. Consistent nontrivial cubic deformations exclude minimal gravitational coupling and may appear only with a number of derivatives constrained in a given range. Derived in an independent manner, our results do agree with those obtained from the light-cone formulation or inspired by string theory. We also show that none of the Abelian vertices deform the gauge transformations, while all the non-Abelian ones are obstructed in a local theory beyond the cubic order.

  3. Final State Interactions in Hypernuclear Decay

    E-Print Network [OSTI]

    A. Parreño; A. Ramos

    2001-04-27

    We present an update of the One-Meson-Exchange (OME) results for the weak decay of s- and p-shell hypernuclei (Ref. Phys. Rev. C {\\bf 56}, 339 (1997)), paying special attention to the role played by final state interactions between the emitted nucleons. The present study also corrects for a mistake in the inclusion of the $K$ and $K^*$ exchange mechanisms, which substantially increases the ratio of neutron-induced to proton-induced transitions, $\\Gamma_n/\\Gamma_p$. With the most up-to-date model ingredients, we find that the OME approach is able to describe very satisfactorily most of the measured observables, including the ratio $\\Gamma_n/\\Gamma_p$.

  4. Extending theories on muon-specific interactions

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

    Carlson, Carl E.; Freid, Michael C.

    2015-11-23

    The proton radius puzzle, the discrepancy between the proton radius measured in muonic hydrogen and electronic hydrogen, has yet to be resolved. There are suggestions that beyond the standard model (BSM) physics could resolve both this puzzle and the muon anomalous magnetic moment discrepancy. Karshenboim et al. point out that simple, nonrenormalizable, models in this direction involving new vector bosons have serious problems when confronting high energy data. The prime example is radiative corrections to W to ?? decay which exceed experimental bounds. We show how embedding the model in a larger and arguably renormalizable theory restores gauge invariance ofmore »the vector particle interactions and controls the high energy behavior of decay and scattering amplitudes. Thus BSM explanations of the proton radius puzzle can still be viable.« less

  5. Nuclear weak interaction rates in primordial nucleosynthesis

    E-Print Network [OSTI]

    George M. Fuller; Christel J. Smith

    2010-09-01

    We calculate the weak interaction rates of selected light nuclei during the epoch of Big Bang Nucleosynthesis (BBN), and we assess the impact of these rates on nuclear abundance flow histories and on final light element abundance yields. We consider electron and electron antineutrino captures on 3He and 7Be, and the reverse processes of positron capture and electron neutrino capture on 3H and 7Li. We also compute the rates of positron and electron neutrino capture on 6He. We calculate beta and positron decay transitions where appropriate. As expected, the final standard BBN abundance yields are little affected by addition of these weak processes, though there can be slight alterations of nuclear flow histories. However, non-standard BBN scenarios, e.g., those involving out of equilibrium particle decay with energetic final state neutrinos, may be affected by these processes.

  6. Wilson Fermions with Four Fermion Interactions

    E-Print Network [OSTI]

    Rantaharju, Jarno; Hietanen, Ari; Pica, Claudio; Sannino, Francesco

    2015-01-01

    We present a lattice study of a four fermion theory, known as Nambu Jona-Lasinio (NJL) theory, via Wilson fermions. Four fermion interactions naturally occur in several extensions of the Standard Model as a low energy parameterisation of a more fundamental theory. In models of dynamical electroweak symmetry breaking these operators, at an effective level, are used to endow the Standard Model fermions with masses. Furthermore these operators, when sufficiently strong, can drastically modify the fundamental composite dynamics by, for example, turning a strongly coupled infrared conformal theory into a (near) conformal one with desirable features for model building. As first step, we study spontaneous chiral symmetry breaking for the lattice version of the NJL model.

  7. On dark degeneracy and interacting models

    SciTech Connect (OSTI)

    Carneiro, S.; Borges, H.A., E-mail: saulo.carneiro@pq.cnpq.br, E-mail: humberto@ufba.br [Instituto de Física, Universidade Federal da Bahia, Campus de Ondina, Salvador, BA, 40210-340 Brazil (Brazil)

    2014-06-01

    Cosmological background observations cannot fix the dark energy equation of state, which is related to a degeneracy in the definition of the dark sector components. Here we show that this degeneracy can be broken at perturbation level by imposing two observational properties on dark matter. First, dark matter is defined as the clustering component we observe in large scale structures. This definition is meaningful only if dark energy is unperturbed, which is achieved if we additionally assume, as a second condition, that dark matter is cold, i.e. non-relativistic. As a consequence, dark energy models with equation-of-state parameter ?1 ? ? < 0 are reduced to two observationally distinguishable classes with ? = ?1, equally competitive when tested against observations. The first comprises the ?CDM model with constant dark energy density. The second consists of interacting models with an energy flux from dark energy to dark matter.

  8. Laser under ultrastrong electromagnetic interaction with matter

    E-Print Network [OSTI]

    Motoaki Bamba; Tetsuo Ogawa

    2015-05-18

    The conventional picture of the light amplification by stimulated emission of radiation (laser) is broken under the ultrastrong interaction between the electromagnetic fields and matter, and distinct dynamics of the electric field and of the magnetic one make the "laser" qualitatively different from the conventional laser, which has been described simply without the distinction. The "laser" in the ultrastrong regime can show a rich variety of behaviors with spontaneous appearance of coherence. We found that the "laser" generally accompanies odd-order harmonics of the electromagnetic fields both inside and outside the cavity and a synchronization with an oscillation of atomic population. A bistability is also demonstrated in a simple model under two-level and single-mode approximations.

  9. Two-wave interaction in ideal magnetohydrodynamics

    E-Print Network [OSTI]

    T. V. Zaqarashvili; B. Roberts

    2006-02-24

    The weakly nonlinear interaction of sound and linearly polarised Alfv{\\'e}n waves propagating in the same direction along an applied magnetic field is studied. It is found that a sound wave is coupled to the Alfv{\\'e}n wave with double period and wavelength when the sound and Alfv{\\'e}n speeds are equal. The Alfv{\\'e}n wave drives the sound wave through the ponderomotive force, while the sound wave returns energy back to the Alfv{\\'e}n wave through the parametric (swing) influence. As a result, the two waves alternately exchange their energy during propagation. The process of energy exchange is faster for waves with stronger amplitudes. The phenomenon can be of importance in astrophysical plasmas, including the solar atmosphere and solar wind.

  10. Nuclear Transparency in the lightest nuclear interactions

    E-Print Network [OSTI]

    M. Ajaz; M. K. Suleymanov; K. H. Khan; A. Zaman

    2012-03-28

    Some experimental results on nuclear transparency effect in pC- and dC-interaction at 4.2 A GeV/c (JINR Dubna) are presented. The "half angle" ({\\theta}1/2) technique was used and the particles with emission angle greater and less than {\\theta}1/2 are considered separately. The results of the experimental study have been compared with the simulation data coming from the Dubna Cascade model. The values of average multiplicity, average momentum, and average transverse momentum of charged pions and protons are analyzed as a function of the number of identified protons in an event. We observed some behaviors for the data which could be considered as some nuclear transparency effects. The lasts have been divided into three main groups depending on their probable behavior: leading effect; cascade effect; medium effect.

  11. Strongly Interacting Matter at High Energy Density

    E-Print Network [OSTI]

    Larry McLerran

    2008-12-08

    This lecture concerns the properties of strongly interacting matter (which is described by Quantum Chromodynamics) at very high energy density. I review the properties of matter at high temperature, discussing the deconfinement phase transition . At high baryon density and low temperature, large $N_c$ arguments are developed which suggest that high baryonic density matter is a third form of matter, Quarkyonic Matter, that is distinct from confined hadronic matter and deconfined matter. I finally discuss the Color Glass Condensate which controls the high energy limit of QCD, and forms the low x part of a hadron wavefunction. The Glasma is introduced as matter formed by the Color Glass Condensate which eventually thermalizes into a Quark Gluon Plasma.

  12. Effects of galaxy interactions in different environments

    E-Print Network [OSTI]

    M. Sol Alonso; Diego G. Lambas; Patricia B. Tissera; Georgina Coldwell

    2006-01-04

    We analyse star formation rates derived from photometric and spectroscopic data of galaxies in pairs in different environments using the 2dF Galaxy Redshift Survey (2dFGRS) and the Sloan Digital Sky Survey (SDSS). The two samples comprise several thousand pairs, suitable to explore into detail the dependence of star formation activity in pairs on orbital parameters and global environment. We use the projected galaxy density derived from the fifth nearest neighbour of each galaxy, with convenient luminosity thresholds to characterise environment in both surveys in a consistent way. Star formation activity is derived through the $\\eta$ parameter in 2dFGRS and through the star formation rate normalised to the total mass in stars, $SFR/M^*$, given by Brinchmann et al. (2004) in the second data release SDSS-DR2. For both galaxy pair catalogs, the star formation birth rate parameter is a strong function of the global environment and orbital parameters. Our analysis on SDSS pairs confirms previous results found with the 2dFGRS where suitable thresholds for the star formation activity induced by interactions are estimated at a projected distance $r_{\\rm p} = 100 \\kpc$ and a relative velocity $\\Delta V = 350$ km $s^{-1}$. We observe that galaxy interactions are more effective at triggering important star formation activity in low and moderate density environments with respect to the control sample of galaxies without a close companion. Although close pairs have a larger fraction of actively star-forming galaxies, they also exhibit a greater fraction of red galaxies with respect to those systems without a close companion, an effect that may indicate that dust stirred up during encounters could be affecting colours and, partially, obscuring tidally-induced star formation.

  13. Study of electron-positron interactions

    SciTech Connect (OSTI)

    Abashian, A.; Gotow, K.; Philonen, L.

    1990-09-15

    For the past seven years, this group has been interested in the study of tests of the Standard Model of Electroweak interactions. The program has centered about the AMY experiment which examines the nature of the final state products in electron-positron collisions in the center of mass energy range near 60 GeV. Results of these measurements have shown a remarkable consistency with the predictions of the minimal model of 3 quark and lepton generations and single charged and neutral intermediate bosons. No new particles or excited states have been observed nor has any evidence for departures in cross sections or angular asymmetries from expectations been observed. These conclusions have been even more firmly established by the higher energy results from the LEP and SLC colliders at center of mass energies of about 90 GeV. Our focus is shifting to the neutrino as a probe to electroweak interactions. The relative merit of attempting to observe neutrinos from point sources versus observing neutrinos generally is not easy to predict. The improved ability to interpret is offset by the probably episodic nature of the emission and irreproducibility of the results. In this phase of development, it is best to be sensitive to both sources of neutrinos. As a second phase of our program at Virginia Tech, we are studying the feasibility of detecting cosmic ray neutrinos in a proposed experiment which we have called NOVA. the results of the test setup will be instrumental in developing an optimum design. A third program we are involved in is the MEGA experiment at Los Alamos, an experiment to place a limit on the rate of muon decay to electron plus photon which is forbidden by the Standard Model.

  14. MARINE MAMMAL SCIENCE, 13(2):307-3 14 (April 1997) 0 1997 by the Society for Marine Mammalogy

    E-Print Network [OSTI]

    Acevedo, Alejandro

    RESIGHTINGS AND BEHAVIOR OF FALSE KILLER WHALES (PSEUDORCA CRASSZDENS) IN COSTA RICA False killer whales

  15. Cetaceans in the Southern California Bight : behavioral, acoustical and spatio-temporal modeling

    E-Print Network [OSTI]

    Henderson, E. Elizabeth

    2010-01-01

    of false killer whale (Pseudorca crassidens) vocalizations.of false killer whale (Pseudorca crassidens) vocalizations.

  16. 168 RESEARCH LETTERS Copyright 2003, SEPM (Society for Sedimentary Geology) 0883-1351/03/0018-0003/$3.00

    E-Print Network [OSTI]

    Arizona, University of

    skulls), Pseudorca crassi- dens (False Killer Whale, one skull), Kogia breviceps (Pyg- my Sperm Whale

  17. Underwater Mirror Exposure to Free-Ranging Naïve Atlantic Spotted Dolphins (Stenella frontalis) in the Bahamas

    E-Print Network [OSTI]

    Delfour, Fabienne; Herzing, Denise

    2013-01-01

    false killer whales (Pseudorca crassidens) and Californiafalse killer whales (Pseudorca crassidens) and sea lions (

  18. Marine Mammals Enact Individual Worlds

    E-Print Network [OSTI]

    Delfour, Fabienne

    2010-01-01

    false killer whales (Pseudorca crassidens) and Californiafalse killer whales (Pseudorca crassidens) and sea lions (

  19. A Bottlenose Dolphin’s (Tursiops truncatus) Responses to Its Mirror Image: Further Analysis

    E-Print Network [OSTI]

    Sarko, Diana; Marino, Lori; Reiss, Diana

    2002-01-01

    false killer whales (Pseudorca crassidens) and Californiaand false killer whales (Pseudorca crassidens; Delfour &

  20. Odontocete population assessment in the four-island area, Hawaii: a preliminary summary of results from 19991

    E-Print Network [OSTI]

    Baird, Robin W.

    attenuata) groups, 6 false killer whale (Pseudorca crassidens) groups, 2 melon-headed whale (Peponocephala

  1. Classification of Risso’s and Pacific white-sided dolphins using spectral properties of echolocation clicks

    E-Print Network [OSTI]

    Soldevilla, M S; Henderson, E Elizabeth; Campbell, Greg S; Wiggins, S M; Hildebrand, John A; Roch, Marie A

    2008-01-01

    False killer whales Pseudorca crassidens and Risso’sand false killer whale ?Pseudorca crassidens? clicks are

  2. United States DeJE,rtment of the Interior, J .A. Krug, Secretary Fish and Wildlife Service, Albert M. Day, Director

    E-Print Network [OSTI]

    haddock, coal fish, pollock, and fish related to the cod family are mixed with the cod liver oil II whaling was disoontinued. Whale factory ~ Iceland: IL 1946, a company called Hvalur h.f. (Whale. The company pur,chased four whale oatchers named respeo,tively "Whale I", "Whale II", "Whale III", and "Whale

  3. Prospective study on microscopic potential with Gogny interaction

    E-Print Network [OSTI]

    Blanchon, G; Arellano, H F

    2015-01-01

    We present our current studies and our future plans on microscopic potential based on effective nucleon-nucleon interaction and many-body theory. This framework treats in an unified way nuclear structure and reaction. It offers the opportunity to link the underlying effective interaction to nucleon scattering observables. The more consistently connected to a variety of reaction and structure experimental data the framework will be, the more constrained effective interaction will be. As a proof of concept, we present some recent results for both neutron and proton scattered from spherical target nucleus, namely 40 Ca, using the Gogny D1S interaction. Possible fruitful crosstalks between microscopic potential, phenomenological potential and effective interaction are exposed. We then draw some prospective plans for the forthcoming years including scattering from spherical nuclei experiencing pairing correlations, scattering from axially deformed nuclei, and new effective interaction with reaction constraints.

  4. Equation of State of an Interacting Pion Gas with Realistic $?$--$?$ Interactions

    E-Print Network [OSTI]

    R. Rapp; J. Wambach

    1995-10-27

    Within the finite-temperature Greens-function formalism we study the equation of state of a hot interacting pion gas at zero chemical potential. Employing realistic $\\pi\\pi$ meson-exchange interactions we selfconsistently calculate the in-medium single-pion selfenergy and the $\\pi\\pi$ scattering amplitude in the quasiparticle approximation. These quantities are then used to evaluate the thermodynamic potential, $\\Omega_\\pi$(T), from which the state variables: pressure-, entropy- and energy-density can be derived. In contrast to earlier calculations based on the low-energy Weinberg Lagrangian we find an overall increase as compared to the free-gas results. We also consider the possibility of a dropping $\\rho$-meson mass as suggested by the 'Brown-Rho Scaling' law.

  5. LHC INTERACTION REGION CORRECTION IN HEAVY ION OPERATION

    SciTech Connect (OSTI)

    PTITSIN,V.; FISCHER,W.; WEI,J.

    1999-09-07

    In heavy ion operation the LHC interaction region at IP2 will have a low-{beta} optics for collisions. The dynamic aperture is therefore sensitive to magnetic field errors in the interaction region quadrupoles and dipoles. The authors investigate the effect of the magnetic field errors on the dynamic aperture and evaluate the effectiveness of local interaction region correctors. The dynamic aperture and the tune space are computed for different crossing angles.

  6. Phase space analysis of some interacting Chaplygin gas models

    E-Print Network [OSTI]

    M. Khurshudyan; R. Myrzakulov

    2015-09-08

    The goal of this paper is to discuss phase space analysis of some interacting Chaplygin gas models in General Relativity. Chaplygin gas is one of the fluids actively considered in modern cosmology due to the fact that it is a joint model of dark energy and dark matter. In this paper we have considered various forms of interaction term Q including linear and non linear sign changeable interactions. For each case late time attractors for the field equations are found.

  7. Aqua-vanadyl ion interaction with Nafion® membranes

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

    Vijayakumar, Murugesan; Govind, Niranjan; Li, Bin; Wei, Xiaoliang; Nie, Zimin; Thevuthasan, Suntharampillai; Sprenkle, Vince L.; Wang, Wei

    2015-03-23

    Lack of comprehensive understanding about the interactions between Nafion membrane and battery electrolytes prevents the straightforward tailoring of optimal materials for redox flow battery applications. In this work, we analyzed the interaction between aqua-vanadyl cation and sulfonic sites within the pores of Nafion membranes using combined theoretical and experimental X-ray spectroscopic methods. Molecular level interactions, namely, solvent share and contact pair mechanisms are discussed based on Vanadium and Sulfur K-edge spectroscopic analysis.

  8. Winding number order in the Haldane model with interactions

    E-Print Network [OSTI]

    Emilio Alba; Jiannis Pachos; Juan Jose Garcia-Ripoll

    2015-05-02

    We study the Haldane model with nearest-neighbor interactions. This model is physically motivated by the associated ultracold atoms implementation. We show that the topological phase of the interacting model can be characterized by a physically observable winding number. The robustness of this number extends well beyond the topological insulator phase towards attractive and repulsive interactions that are comparable to the kinetic energy scale of the model. We identify and characterize the relevant phases of the model.

  9. QCD and High Energy Interactions: Moriond 2014 Theory Summary

    E-Print Network [OSTI]

    Thomas Gehrmann

    2014-06-20

    This article summarizes new theoretical developments, ideas and results that were presented at the 2014 Moriond "QCD and High Energy Interactions".

  10. Radiation Dose Measurement for High-Intensity Laser Interactions...

    Office of Scientific and Technical Information (OSTI)

    Radiation Dose Measurement for High-Intensity Laser Interactions with Solid Targets at SLAC Citation Details In-Document Search Title: Radiation Dose Measurement for High-Intensity...

  11. Bridging Research Interactions Through Collaborative Development Grants in Energy

    Broader source: Energy.gov [DOE]

    The DOE Bridging Research Interactions through collaborative Development Grants in Energy (BRIDGE) program funds collaborative research teams to significantly lower the cost of solar energy systems...

  12. Differential analysis of high-throughput quantitative genetic interaction data

    E-Print Network [OSTI]

    Bean, Gordon J; Ideker, Trey

    2012-01-01

    DNA damage response (DDR)). Other biological networks, suchespecially in context of the DDR. Thus, differentialThese gene pairs indicate DDR- relevant interactions that

  13. Itinerant effects and enhanced magnetic interactions in Bi-based...

    Office of Scientific and Technical Information (OSTI)

    and enhanced magnetic interactions in Bi-based multilayer cuprates Dean, M. P. M. Brookhaven National Lab. (BNL), Upton, NY (United States). Department of Condensed Matter...

  14. Interaction Pool: Towards a user-centred test collection

    E-Print Network [OSTI]

    Joho, H.

    Joho,H. Villa,R. Jose,J.M. Proceedings of the Workshop on Web Information Seeking and Interaction, SIGIR 2007. ACM

  15. Effect of Coulomb interaction on multi-electronwave packet dynamics

    SciTech Connect (OSTI)

    Shiokawa, T.; Takada, Y.; Konabe, S.; Hatsugai, Y.; Muraguchi, M.; Endoh, T.; Shiraishi, K.

    2013-12-04

    We have investigated the effect of Coulomb interaction on electron transport in a one-dimensional nanoscale structure using a multi-electron wave packet approach. To study the time evolution, we numerically solve the time-dependent Hartree-Fock equation, finding that the electron wave packet dynamics strongly depends on the Coulomb interaction strength. When the Coulomb interaction is large, each electron wave packet moves separately in the presence of an electric field. With weak Coulomb interaction, however, the electron wave packets overlap, forming and moving as one collective wave packet.

  16. Non-linear Seismic Soil Structure Interaction Method for Developing...

    Office of Environmental Management (EM)

    techniques * "EFFECT ON NON-LINEAR SOIL- STRUCTURE INTERACTION DUE TO BASE SLAB UPLIFT ON THE SEISMIC RESPONSE OF A HIGH- TEMPERATURE GAS-COOLED REACTOR (HTGR)" Kennedy,...

  17. Investigations of multivalent ligand-receptor interactions in microfluidic devices 

    E-Print Network [OSTI]

    Baryshnikova, Olga K.

    2002-01-01

    The objective of the studies presented herein was to obtain thermodynamic data on surface confined multivalent ligand - receptor interactions. Novel microfluidic strategies in conjunction with total internal reflection ...

  18. Exploring new physics through contact interactions in lepton...

    Office of Scientific and Technical Information (OSTI)

    Conference: Exploring new physics through contact interactions in lepton pair production at a linear collider Citation Details In-Document Search Title: Exploring new physics...

  19. Ecology of microbe/basaltic glass interactions : mechanisms and diversity

    E-Print Network [OSTI]

    Sudek, Lisa A.

    2011-01-01

    in oceanography: microbe-mineral interactions at and belowThe phylogeny of endolithic microbes associated with marineIn: Iron transport in microbes, plants and animals.

  20. Microbe-metazoan interactions at Pacific Ocean methane seeps

    E-Print Network [OSTI]

    Thurber, Andrew Reichmann

    2010-01-01

    lipid biomarkers for microbes with chemoautotrophicOF CALIFORNIA, SAN DIEGO Microbe-Metazoan Interactions atxiv xvii xviii Chapter 3. Microbes, Macrofauna, and Methane:

  1. Front-runners in plant-microbe interactions.

    E-Print Network [OSTI]

    Ronald, Pamela C; Shirasu, Ken

    2012-01-01

    Front-runners in plant–microbe interactions Editorialwww.sciencedirect.com Plants and microbes, abundant in thedetermine if the associated microbes are friends or foes,

  2. Microbe-Metazoan interactions at Pacific Ocean methane seeps

    E-Print Network [OSTI]

    Thurber, Andrew R

    2010-01-01

    lipid biomarkers for microbes with chemoautotrophicOF CALIFORNIA, SAN DIEGO Microbe-Metazoan Interactions atxiv xvii xviii Chapter 3. Microbes, Macrofauna, and Methane:

  3. Neutron Interactions in the CUORE Neutrinoless Double Beta Decay...

    Office of Scientific and Technical Information (OSTI)

    Interactions in the CUORE Neutrinoless Double Beta Decay Experiment Dolinski, M J 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS;...

  4. Effect of alcohols on aqueous lysozyme-lysozyme interactions...

    Office of Scientific and Technical Information (OSTI)

    Effect of alcohols on aqueous lysozyme-lysozyme interactions from static light-scattering measurements Citation Details In-Document Search Title: Effect of alcohols on aqueous...

  5. Compressible Turbulence and Interactions with Shock Waves and...

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

    Why it Matters: Shockturbulence interaction is a fundamental phenomenon in fluid mechanics that occurs in a wide range of interesting problems in various disciplines,...

  6. Wind Turbine Interactions with Birds, Bats, and their Habitats...

    Office of Environmental Management (EM)

    Birds, Bats, and their Habitats: A Summary of Research Results and Priority Questions Wind Turbine Interactions with Birds, Bats, and their Habitats: A Summary of Research...

  7. Supernova bounds on supersymmetric R-parity violating interactions

    E-Print Network [OSTI]

    Nunokawa, H; Valle, José W F

    1996-01-01

    We re-examine resonant massless-neutrino conversions in a dense medium induced by flavour changing neutral current (FCNC) interactions. We show how the observed \\bar\

  8. Ab Initio Coupled-Cluster Effective Interactions for the Shell...

    Office of Scientific and Technical Information (OSTI)

    Initio Coupled-Cluster Effective Interactions for the Shell Model: Application to Neutron-Rich Oxygen and Carbon Isotopes Citation Details In-Document Search Title: Ab Initio...

  9. Scale-Dependent Fracture-Matrix Interactions and Their Impact...

    Office of Scientific and Technical Information (OSTI)

    Scale-Dependent Fracture-Matrix Interactions and Their Impact on Radionuclide Transport: Development of efficient particle-tracking methods Citation Details In-Document Search...

  10. Grid Interaction Tech Team, and International Smart Grid Collaboration...

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

    Team, and International Smart Grid Collaboration Grid Interaction Tech Team, and International Smart Grid Collaboration 2012 DOE Hydrogen and Fuel Cells Program and Vehicle...

  11. Hydrodynamic interactions in metal rod-like particle suspensions...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: Hydrodynamic interactions in metal rod-like particle suspensions due to induced charge electroosmosis Citation Details In-Document Search Title: Hydrodynamic...

  12. Interaction Between Carbon Markets and Renewable Energy Markets (Poster)

    SciTech Connect (OSTI)

    Carroll, G. L.; Milford, J.; Bird, L.

    2006-10-03

    This poster, submitted for the CU Energy Initiative/NREL Symposium on October 3, 2006 in Boulder, Colorado, discusses the interaction between carbon markets and renewable energy markets.

  13. 22.51 Interaction of Radiation with Matter, Spring 2003

    E-Print Network [OSTI]

    Chen, Sow-Hsin

    Basic principles of interaction of electromagnetic radiation, thermal neutrons, and charged particles with matter. Introduces classical electrodynamics, quantum theory of radiation, time-dependent perturbation theory, ...

  14. Centrifugal-Barrier Effects and Determination of the Interaction Radius

    E-Print Network [OSTI]

    Ning Wu

    2013-05-21

    The interaction radius of a resonance is an important physical quantity to describe the structure of a resonance. But, for a long time, physicists do not find a reliable way to measure the magnitude of the interaction radius of a resonance. In this paper, a method is proposed to measure the interaction radius in physics analysis. It is found that the centrifugal barrier effects have great influence to physical results obtained in the PWA fit, and the interaction radius of some resonances can be well measured in the fit.

  15. Laser-induced acoustic wave generation/propagation/interaction in water in various internal channels

    E-Print Network [OSTI]

    2010-01-01

    induced plane acoustic wave generation, propagation andinduced acoustic wave generation/propagation/interaction insingle acoustic wave generation, propagation, interaction

  16. CRIME - cosmic ray interactions in molecular environments

    E-Print Network [OSTI]

    Krause, Julian; Gabici, Stefano

    2015-01-01

    Molecular clouds act as targets for cosmic rays (CR), revealing their presence through either gamma-ray emission due to proton-proton interactions, and/or through the ionization level in the cloud, produced by the CR flux. The ionization rate is a unique tool, to some extent complementary to the gamma-ray emission, in that it allows to constrain the CR spectrum especially for energies below the pion production rate ($\\approx 280$ MeV). Here we study the effect of ionization on $H_2$ clouds due to both CR protons and electrons, using the fully relativistic ionization cross sections, which is important to correctly account for the contribution due to relativistic CRs. The contribution to ionization due to secondary electrons is also included self-consistently. The whole calculation has been implemented into a numerical code which is publicly accessible through a web-interface. The code also include the calculation of gamma-ray emission once the CR spectrum

  17. Stability of Horndeski vector-tensor interactions

    SciTech Connect (OSTI)

    Jiménez, Jose Beltrán [Centre for Cosmology, Particle Physics and Phenomenology, Institute of Mathematics and Physics, Louvain University, 2 Chemin du Cyclotron, Louvain-la-Neuve, 1348 (Belgium); Durrer, Ruth; Heisenberg, Lavinia [Département de Physique Théorique and Center for Astroparticle Physics, Université de Genève, 24 quai Ansermet, Genève 4, CH-1211 (Switzerland); Thorsrud, Mikjel, E-mail: jose.beltran@uclouvain.be, E-mail: ruth.durrer@unige.ch, E-mail: lavinia.heisenberg@unige.ch, E-mail: mikjel.thorsrud@astro.uio.no [Institute of Theoretical Astrophysics, University of Oslo, P.O. Box 1029 Blindern, Oslo, N-0315 (Norway)

    2013-10-01

    We study the Horndeski vector-tensor theory that leads to second order equations of motion and contains a non-minimally coupled abelian gauge vector field. This theory is remarkably simple and consists of only 2 terms for the vector field, namely: the standard Maxwell kinetic term and a coupling to the dual Riemann tensor. Furthermore, the vector sector respects the U(1) gauge symmetry and the theory contains only one free parameter, M{sup 2}, that controls the strength of the non-minimal coupling. We explore the theory in a de Sitter spacetime and study the presence of instabilities and show that it corresponds to an attractor solution in the presence of the vector field. We also investigate the cosmological evolution and stability of perturbations in a general FLRW spacetime. We find that a sufficient condition for the absence of ghosts is M{sup 2} > 0. Moreover, we study further constraints coming from imposing the absence of Laplacian instabilities. Finally, we study the stability of the theory in static and spherically symmetric backgrounds (in particular, Schwarzschild and Reissner-Nordström-de Sitter). We find that the theory, quite generally, do have ghosts or Laplacian instabilities in regions of spacetime where the non-minimal interaction dominates over the Maxwell term. We also calculate the propagation speed in these spacetimes and show that superluminality is a quite generic phenomenon in this theory.

  18. Tracing interactions in HCGs through the HI

    E-Print Network [OSTI]

    L. Verdes-Montenegro; M. S. Yun; B. A. Williams; W. K. Huchtmeier; A. Del Olmo; J. Perea

    1999-09-02

    We present a global study of HI spectral line mapping for 16 Hickson Compact Groups (HCGs) combining new and unpublished VLA data, plus the analysis of the HI content of individual galaxies. Sixty percent of the groups show morphological and kinematical signs of perturbations (from multiple tidal features to concentration of the HI in a single enveloping cloud) and sixty five of the resolved galaxies are found to be HI deficient with respect to a sample of isolated galaxies. In total, 77% of the groups suffer interactions among all its members which provides strong evidence of their reality. We find that dynamical evolution does not always produce HI deficiency, but when this deficiency is observed, it appears to correlate with a high group velocity dispersion and in some cases with the presence of a first-ranked elliptical. The X-ray data available for our sample are not sensitive enough for a comparison with the HI mass; however this study does suggest a correlation between HI deficiency and hot gas since velocity dispersions are known from the literature to correlate with X-ray luminosity.

  19. Quantized vortices in interacting gauge theories

    E-Print Network [OSTI]

    Salvatore Butera; Manuel Valiente; Patrik Öhberg

    2015-09-21

    We consider a two-dimensional weakly interacting ultracold Bose gas whose constituents are two-level atoms. We study the effects of a synthetic density-dependent gauge field that arises from laser-matter coupling in the adiabatic limit with a laser configuration such that the single-particle zero-order vector potential corresponds to a constant synthetic magnetic field. We find a new exotic type of current non-linearity in the Gross-Pitaevskii equation which affects the dynamics of the order parameter of the condensate. We investigate the rotational properties of this system, focusing in particular on the physical conditions that make the nucleation of a quantized vortex in the system energetically favourable with respect to the non rotating solution. We point out that two different physical interpretations can be given to this new non linearity: firstly it can be seen as a local modification of the mean field coupling constant, whose value depends on the angular momentum of the condensate. Secondly, it can be interpreted as a density modulated angular velocity given to the cloud. Looking at the problem from both of these viewpoints, we analyze the physical conditions that make a single vortex state energetically favourable. In the Thomas-Fermi limit, we show that the effect of the new nonlinearity is to induce a rotation to the condensate, where the transition from non-rotating to rotating states depends on the density of the cloud.

  20. Configuration Interaction with Antisymmetrized Geminal Powers

    E-Print Network [OSTI]

    Uemura, Wataru; Sugino, Osamu

    2015-01-01

    To avoid the combinatorial computational cost of configuration interaction (CI), we have previously introduced the symmetric tensor decomposition CI (STD-CI) method, where we take advantage of the antisymmetric nature of the electronic wave function and express the CI coefficients compactly as a series of Kronecker product states (STD series) [W. Uemura and O. Sugino, Phys. Rev. Lett. 109, 253001 (2012)]. Here we extend the variational degrees of freedom by using different molecular orbitals for different terms in the STD series. This scheme is equivalent to the linear combination of the Hartree-Fock-Bogoliubov state or the antisymmetrized geminal powers (AGP). The total energy converges very rapidly within 0.72 $\\mu$Hartree taking only 10 terms for the water molecule, and the convergence is likewise fast for Hubbard tetramers. The computational cost scales as the fifth power of the number of electrons and the square of the number of terms in the STD series, indicating the promise of this AGP-based scheme for...

  1. Mechanical interactions of UIS support columns. [LMFBR

    SciTech Connect (OSTI)

    Kennedy, J.M.; Belytschko, T.B.

    1983-01-01

    Code development involving above-core structures (ACS) has recently focused on modeling the complexities of mechanical interactions in the ACS support columns which play a very important role in their behavior. These developments are directed toward two considerations: (1) the prediction of the forces exerted by the column in a hypothetical core-disruptive accident (HCDA) in order that the motion of the ACS can be predicted in a coupled fluid-structure analysis, (2) the calculation of the strains and deformations of the support columns so that situations which lead to complete failure can be identified. Finite element capabilities have been developed to handle various types of plant design for the analysis of coupled hydrodynamics and structural response. Beam elements, which previously represented the support columns were able to account for geometric nonlinearities and material nonlinearities, however, changes in the column cross section were not treated. Therefore, one of the aims of this study was to examine the effect of the change in cross section on the behavior of the support columns. A second effect which has been studied is the behavior of support columns consisting of two concentric cylinders.

  2. Realistic model for radiation-matter interaction

    E-Print Network [OSTI]

    Richard A. Pakula

    2004-06-21

    This paper presents a realistic model that describes radiation-matter interactions. This is achieved by a generalization of first quantization, where the Maxwell equations are interpreted as the electromagnetic component of the Schroedinger equation. This picture is complemented by the consideration of electrons and photons as real particles in three-dimensional space, following guiding conditions derived from the particle-wave-functions to which they are associated. The guiding condition for the electron is taken from Bohmian mechanics, while the photon velocity is defined as the ratio between the Poynting vector and the electromagnetic energy density. The case of many particles is considered, taking into account their statistical properties. The formalism is applied to a two level system, providing a satisfactory description for spontaneous emission, Lamb shift, scattering, absorption, dispersion, resonance fluorescence and vacuum fields. This model adequately describes quantum jumps by the entanglement between the photon and the atomic system and it will prove to be very useful in the simulation of quantum devices for quantum computers and quantum information systems. A possible relativistic generalization is presented, together with its relationship to QED.

  3. Bilayer membrane interactions with nanofabricated scaffolds

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

    Collier, Patrick C.

    2015-07-29

    Membrane function is facilitated by lateral organization within the lipid bilayer, including phase-separation of lipids into more ordered domains (lipid rafts) and anchoring of the membrane to a cytoskeleton. These features have proven difficult to reproduce in model membrane systems such as black lipid membranes, unilamellar vesicles and supported bilayers. However, advances in micro/nanofabrication have resulted in more realistic synthetic models of membrane-cytoskeleton interactions that can help uncover the design rules responsible for biological membrane formation and organization. This review will focus on describing micro-/nanostructured scaffolds that can emulate the connections of a cellular membrane to an underlying “cytoskeleton”. Thismore »includes molecular-based scaffolds anchored to a solid substrate through surface chemistry, solid-state supports modified by material deposition, lithography and etching, the creation of micro/nanoporous arrays, integration with microfluidics, and droplet-based bilayers at interfaces.Model systems such as these are increasing our understanding of structure and organization in cell membranes, and how they result in the emergence of functionality at the nanoscale.« less

  4. Wake potentials of the ILC Interaction Region

    SciTech Connect (OSTI)

    Novokhatski, A.; /SLAC

    2011-08-16

    The vacuum chamber of the ILC Interaction Region (IR) is optimized for best detector performance. It has special shaping to minimize additional backgrounds due to the metal part of the chamber. Also, for the same reason this thin vacuum chamber does not have water cooling. Therefore, small amounts of power, which may be deposited in the chamber, can be enough to raise the chamber to a high temperature. One of the sources of 'heating' power is the electromagnetic field of the beam. This field diffracts by non-regularities of the beam pipe and excites free-propagating fields, which are then absorbed by the pipe wall. In addition we have a heating power of the image currents due to finite conductivity of the metallic wall. We will discuss these effects as updating the previous results. The conclusions of this report are: (1) The amount of the beam energy loss in IR is almost equal to the energy loss in one ILC (TESLA) accelerating cryo-module; (2) Addition energy spread at IR is very small; (3) Spectrum of the wake fields is limited 300 GHz; (4) Average power of the wake fields excited in IR is 30 W for nominal ILC parameters; and (5) Pulse power in this case is 6 kilowatts.

  5. An alternative view on the electroweak interactions

    E-Print Network [OSTI]

    Xavier Calmet

    2010-08-23

    We discuss an alternative to the Higgs mechanism which leads to gauge invariant masses for the electroweak bosons. The key idea is to reformulate the gauge invariance principle which, instead of being applied as usual at the level of the action, is applied at the level of the quantum fields. In other words, we define gauge invariant quantum fields which are used to build the action. In that framework, the Higgs field is not necessarily a physical degree of freedom but can merely be a dressing field that does not propagate. If the Higgs boson is not propagating, the weak interactions must become strongly coupled below 1 TeV and have a non-trivial fixed point and would thus be renormalizable at the non-perturbative level. On the other hand, if a gauge invariant Higgs boson is introduced in the model, its couplings to the fermions and the electroweak bosons can be quite different from those expected in the standard model.

  6. National Marine Fisheries Service/NOAA, Commerce 224.103 Where listed

    E-Print Network [OSTI]

    or finback whale (Balaenoptera physalus); Hawaiian monk seal (Monachus schauinslandi); Humpback whale mammals. Blue whale (Balaenoptera musculus); Bowhead whale (Balaena mysticetus); Caribbean monk seal to listing or their captive born prog- eny; Mediterranean monk seal (Monachus monachus); Right whales

  7. Test-aware Combinatorial Interaction Testing Cemal Yilmaz

    E-Print Network [OSTI]

    Yanikoglu, Berrin

    a configuration model that defines the valid configuration space for the software under test. This model typicallyTest-aware Combinatorial Interaction Testing Cemal Yilmaz Faculty of Engineering and Natural interaction testing (CIT) approaches system- atically sample a given configuration space and select a set

  8. Display Requirements for an Interactive Rail Scheduling Display

    E-Print Network [OSTI]

    Cummings, Mary "Missy"

    the development of an interactive in-cab scheduling interface. Information about current high speed railDisplay Requirements for an Interactive Rail Scheduling Display Jacqueline M. Tappan1 , David J, paper speed charts, and rote memorization to meet the many demands of train operation. The separation

  9. Development of Human-Robot Interaction Systems for Humanoid Robots

    E-Print Network [OSTI]

    Maxwell, Bruce

    Development of Human-Robot Interaction Systems for Humanoid Robots Bruce A. Maxwell, Brian Leighton, Andrew Ramsay Colby College {bmaxwell,bmleight,acramsay}@colby.edu Abstract - Effective human-robot interaction is one of the primary challenges for humanoid robots. Sources of uncertainty, such as robot motion

  10. Measurement of the quantum capacitance of interacting electrons in

    E-Print Network [OSTI]

    Loss, Daniel

    LETTERS Measurement of the quantum capacitance of interacting electrons in carbon nanotubes S.ilani@cornell.edu; mceuen@ccmr.cornell.edu Published online: 24 September 2006; doi:10.1038/nphys412 T he electronic the interactions between electrons and their correlations, and a kinetic term given by the electronic density

  11. High-Resolution Simulations of Parallel BladeVortex Interactions

    E-Print Network [OSTI]

    Alonso, Juan J.

    to that encountered in the simulation of realistic helicopter blade­vortex interaction, but the computational costs aeroacoustics rotor tests [2,3]. These tests were performed on a Mach-scaled Bo-105 rotor and the blade loadsHigh-Resolution Simulations of Parallel Blade­Vortex Interactions Alasdair Thom University

  12. BLUE: An Interactive Visualization System for Categorical Data Technical Note

    E-Print Network [OSTI]

    Kerbs, R. W.

    BLUE: An Interactive Visualization System for Categorical Data Technical Note Robert W. Kerbs. This paper introduces a prototype data visualization system, BLUE, to help induce meaningful decision trees from databases that contain primarily categorical attributes. BLUE is an interactive model creation

  13. Hierarchical Partial Matching and Segmentation of Interacting Cells

    E-Print Network [OSTI]

    Wu, Zheng

    Hierarchical Partial Matching and Segmentation of Interacting Cells Zheng Wu1 , Danna Gurari1 propose a method that automatically tracks and seg- ments living cells in phase-contrast image sequences, especially for cells that deform and interact with each other or clutter. We formulate the problem as a many

  14. Study of ProteinProtein Interaction Using Conformational Space Annealing

    E-Print Network [OSTI]

    Lee, Jooyoung

    Sim, and Jooyoung Lee* School of Computational Sciences, Korea Institute for Advanced Study, Seoul geometric and chemical complementarities, as well as electrostatic interaction, hydrogen-bonding interaction the population of solutions through genetic operators to the final population containing diverse solutions

  15. Multidimensional, autoresonant three-wave interactions O. Yaakobia

    E-Print Network [OSTI]

    Friedland, Lazar

    electromagnetic wave and an ion-acoustic wave stimulated Brillouin scattering SBS or an electrostatic plasma wave waves of the Korteweg­de Vries KdV equation,23 and one-dimensional 1D two- and three-wave interactionsMultidimensional, autoresonant three-wave interactions O. Yaakobia and L. Friedlandb Racah

  16. Prediction of proteinprotein interaction sites in heterocomplexes with neural networks

    E-Print Network [OSTI]

    Pazos, Florencio

    Prediction of protein­protein interaction sites in heterocomplexes with neural networks Piero on information about evolutionary con- servation and surface disposition. We implement a neural network based protein sur- face. However neural networks trained with a reduced representation of the interacting patch

  17. Prediction protein--protein interaction sites heterocomplexes with neural networks

    E-Print Network [OSTI]

    Pazos, Florencio

    Prediction protein--protein interaction sites heterocomplexes with neural networks Piero Fariselli neural network based system, which a cross validation proce­ dure and allows correct detection 73 face. However neural networks trained a reduced representation of interacting patch sequence profile su

  18. Influence of Salt Purity on Na+ and Palmitic Acid Interactions

    E-Print Network [OSTI]

    Influence of Salt Purity on Na+ and Palmitic Acid Interactions Zishuai Huang, Wei Hua, Dominique of salt purity on the interactions between Na+ ions and the carboxylate (COO- ) head group of palmitic frequency generation (VSFG) spectroscopy. Ultrapure (UP) and ACS grade NaCl salts are used for aqueous

  19. Design Study of Belle II Interaction Region Shinya Sugihara

    E-Print Network [OSTI]

    Aihara, Hiroaki

    Design Study of Belle II Interaction Region Shinya Sugihara Department of Physics, University positron collider SuperKEKB which is designed to have a luminosity of 8 × 1035 cm-2 s-1 . To achieve this high luminosity, we have to design a new interaction region due to high background and reduced space

  20. THE PARITY NON-CONSERVING ELECTRON-NUCLEON INTERACTION

    SciTech Connect (OSTI)

    Commins, E.D.; Bucksbaum, P.H.

    1980-01-01

    We present general ideas concerning the neutral weak eq interaction. Then we describe the salient features of the Weinberg-Salam model, discuss in detail the principles and methods of the SLAC polarized electron scattering experiment and atomic physics experiments, and summarize neutral weak interaction results and their implications.

  1. Molecular motors interacting with their own tracks Max N. Artyomov

    E-Print Network [OSTI]

    Molecular motors interacting with their own tracks Max N. Artyomov Department of Chemistry; published 17 April 2008 Dynamics of molecular motors that move along linear lattices and interact with them exactly solvable discrete-state "burnt- bridge" models. Molecular motors are viewed as diffusing particles

  2. NISTIR 7966 (Second Draft) Security of Interactive and

    E-Print Network [OSTI]

    and patch management, and dynamic cloud provisioning. This is often34 accomplished using the Secure ShellNISTIR 7966 (Second Draft) Security of Interactive and Automated Access Management Using Secure (Second Draft) Security of Interactive and Automated Access Management Using Secure Shell (SSH) (Second

  3. Interactive Urban Development Control with Collaborative Virtual Environments

    E-Print Network [OSTI]

    Taylor, Hamish

    a collaborative virtual environment system can be constructed, applied and used in the context of urban planning medium that also allows interactions with 3D representations of the environment being worked onInteractive Urban Development Control with Collaborative Virtual Environments Tina Manoharana

  4. Interactive Simulation of Fire Zeki Melek John Keyser

    E-Print Network [OSTI]

    Keyser, John

    and interactive model to simulate and control the fire phenomenon. We use a modified interactive fluid dynamics solver to describe the motion of a 3-gas system. We simulate the motion of oxidizing air, fuel gases, and exhaust gases. The burning process is simulated by consuming fuel and air based on the amounts of fuel

  5. Interaction-induced decoherence of atomic Bloch oscillations

    E-Print Network [OSTI]

    A. Buchleitner; A. R. Kolovsky

    2003-05-08

    We show that the energy spectrum of the Bose-Hubbard model amended by a static field exhibits Wigner-Dyson level statistics. In itself a characteristic signature of quantum chaos, this induces the irreversible decay of Bloch oscillations of cold, interacting atoms loaded into an optical lattice, and provides a Hamiltonian model for interaction induced decoherence.

  6. Repeated interaction model for diffusion-induced Ramsey narrowing

    E-Print Network [OSTI]

    Walsworth, Ronald L.

    Repeated interaction model for diffusion-induced Ramsey narrowing Yanhong Xiao 1, Irina Novikova 2. Xiao et al., Phys. Rev. Lett. 96, 043601 (2006)] we characterized diffusion-induced Ramsey narrowing presentation of the repeated interaction model of diffusion-induced Ramsey narrowing, with particular focus

  7. Cnidarian-Microbe Interactions and the Origin of Innate

    E-Print Network [OSTI]

    Cnidarian-Microbe Interactions and the Origin of Innate Immunity in Metazoans Thomas C.G. Bosch-155626 Copyright c 2013 by Annual Reviews. All rights reserved Keywords host-microbe interactions, evolution. These resident microbes influence fitness and thus ecologically important traits of their hosts, ultimately

  8. An Integrated Approach to Interactive and Personalized TV Advertising

    E-Print Network [OSTI]

    Ardissono, Liliana

    An Integrated Approach to Interactive and Personalized TV Advertising Georgios Lekakos1, Dimitris, personalisation of advertisements refers to the use of technology and viewer information in order to tailor with the topic of advertising over digital interactive TV and de- scribe a specific approach to the delivery

  9. Blue Lacuna: Lessons Learned Writing the World's Longest Interactive Fiction

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    1 Blue Lacuna: Lessons Learned Writing the World's Longest Interactive Fiction Aaron A. Reed Abstract--Blue Lacuna is a new long form interactive fic- tion comprising nearly 400,000 words of prose play time of fifteen to twenty hours. In development between 2006 and 2009, Blue Lacuna fea- tures

  10. Using Interactive Design Activity Visualizations for Supporting Collaborative Sketching Sessions

    E-Print Network [OSTI]

    Reiterer, Harald

    limiting the control such a trained professional can have over the group activity. Figure 1. Our system combines digital pen & paper and interactive design activity visualizations. In our research, we have visualizations. Therefore, our system combines digital pen & paper tools with interactive visualizations that can

  11. Stress and Cognitive Load in Multimodal Conversational Interactions

    E-Print Network [OSTI]

    Nijholt, Anton

    Stress and Cognitive Load in Multimodal Conversational Interactions Andreea Niculescu, Yujia Cao conversational interactions is determined by many influence parameters. Stress and cognitive load are two of them. In order to assess the impact of stress and cognitive load on the perceived conversational quality

  12. Stress-induced changes in gene interactions in human cells

    E-Print Network [OSTI]

    Ives, Zachary G.

    Stress-induced changes in gene interactions in human cells Renuka R. Nayak1 , William E. Bernal2 environments by changing gene expression and gene interactions. To study how human cells response to stress, we endo- plasmic reticulum stress and exposure to ionizing radiation. We identified thousands of genes

  13. A finite element analysis of pneumatic-tire/sand interactions

    E-Print Network [OSTI]

    Grujicic, Mica

    A finite element analysis of pneumatic-tire/sand interactions during off-road vehicle travel M pneumatic tire and sand during off-road vehicle travel. Keywords Finite element analysis, Road vehicles and for other tire/sand combinations. Since the finite element analysis of the tire/sand interaction enables

  14. Using data fusion for scoring reliability of proteinprotein interactions

    E-Print Network [OSTI]

    Wong, Limsoon

    Using data fusion for scoring reliability of protein­protein interactions Alireza Vazifedoost@ut.ac.ir **Rahgozar@ut.ac.ir moshiri@ut.ac.ir sadeghi@nigeb.ac.ir § § hnchua@i2r.a-star.edu.sg ¶¶ skng@i2r.a-star data fusion to model potential interactions between the multiple information sources. Using data fusion

  15. CLouds and Aerosol Radiative Interaction and Forcing Investigation

    E-Print Network [OSTI]

    Graaf, Martin de

    Radiative Interaction and Forcing Investigation Version 1.0 Date March 2012 Status Final #12;#12;CLARIFI, by absorbing and scattering solar radiation, and more importantly, by modifying cloud propertiesCLARIFI CLouds and Aerosol Radiative Interaction and Forcing Investigation M. de Graaf, L

  16. GN Wave theory and TEBEM for Wave-Body Interaction

    E-Print Network [OSTI]

    GN Wave theory and TEBEM for Wave-Body Interaction Dr. BinBin Zhao and Professor Wenyang Duan of simulating irregular nonlinear water wave interaction with arbitrary floating bodies, the Green-Naghdi wave corners. The results show that the high-level GN theory can predict wave transformation over uneven seabed

  17. An Experimental Comparison of Physical Mobile Interaction Techniques

    E-Print Network [OSTI]

    work has shown that mobile devices can act as universal remote controls for interaction with smart as selection techniques in smart environments. 1 Introduction Mobile devices have become pervasive; most people they are mostly used for interaction between a user, mobile device and a service. In such situations the context

  18. World Data Center for Human Interactions in the Environment

    E-Print Network [OSTI]

    Columbia University

    University Conference on Climate Change and Official Statistics Oslo, Norway, 14-16 April 2008 #12;World Data of observations to climate-driven model simulations. #12;World Data Center for Human Interactions in the Environment Linking Cause to Effect 6 #12;World Data Center for Human Interactions in the Environment Climate

  19. Biomaterials 28 (2007) 162174 Spectroscopic translation of cellmaterial interactions

    E-Print Network [OSTI]

    Bustamante, Fabián E.

    2007-01-01

    Biomaterials 28 (2007) 162­174 Spectroscopic translation of cell­material interactions Josephine of cellular interactions with a biomaterial surface is important to the development of novel biomaterials on biomaterials can be time consuming, and destructive, and are not amenable to quantitative assessment in situ

  20. An Interactive Computer Model of Two-Country Trade

    E-Print Network [OSTI]

    Hamlen, Kevin W.

    country when free trade is made available. One of the most important learning lessons for the students91 An Interactive Computer Model of Two-Country Trade Bill Hamlen and Kevin Hamlen Abstract We introduce an interactive computer model of two-country trade that allows students to investigate

  1. Fluid structure interaction in flexible Christina Grigoria Giannopapa

    E-Print Network [OSTI]

    Eindhoven, Technische Universiteit

    Fluid structure interaction in flexible vessels Christina Grigoria Giannopapa Thesis submitted with the study of fluid-structure interaction in flexible tubes both from the modelling as well as the experimental point of view. More specifically, it presents the first stage of development and testing

  2. On the Evolution of User Interaction in Facebook Bimal Viswanath

    E-Print Network [OSTI]

    Gummadi, Krishna P.

    On the Evolution of User Interaction in Facebook Bimal Viswanath Alan Mislove Meeyoung Cha Krishna the activity network-- a network that is based on the actual interaction between users, rather than mere. In this paper, we study the evolution of activity between users in the Facebook social network to capture

  3. Understanding the Interaction between Interests, Conversations and Friendships in Facebook

    E-Print Network [OSTI]

    Understanding the Interaction between Interests, Conversations and Friendships in Facebook Qirong the Interaction between Interests, Conversations and Friendships in Facebook Qirong Ho Rong Yan Rajat Raina Eric P 15213 Facebook, 10 Hacker Way, Menlo Park CA 94025 Abstract In this paper, we explore salient questions

  4. Goldstone-Soliton Interactions and Brane World Neutrinos

    E-Print Network [OSTI]

    N. D. Lambert; P. C. West

    2000-12-14

    We discuss the interactions of Goldstone particles with solitonic states. We observe that, contrary to the familiar situation in the vacuum sector, the Goldstone particles can have non-derivative interactions with the solitons. This result is applied to brane physics and in particular leads to the possibility that neutrinos in brane world scenarios are Goldstone particles for broken supersymmetry.

  5. Empathic Painting: Interactive stylization through observed emotional state

    E-Print Network [OSTI]

    Collomosse, John

    Empathic Painting: Interactive stylization through observed emotional state Maria Shugrina Computer. Abstract We present the "empathic painting" -- an interactive painterly ren- dering whose appearance adapts in real time to reflect the perceived emotional state of the viewer. The empathic painting is an ex

  6. Paint with Your Voice: An Interactive, Sonic Installation

    E-Print Network [OSTI]

    Paint with Your Voice: An Interactive, Sonic Installation Abstract In this paper, we describe the design and implementa- tion of an interactive, sonic installation that lets visitors paint pictures paintbrush that paints onto a projected canvas. Depending on both pitch and volume of the visitor's voice

  7. THE FUTURE IN BRAIN/NEURAL-COMPUTER INTERACTION

    E-Print Network [OSTI]

    Theune, Mariët

    THE FUTURE IN BRAIN/NEURAL-COMPUTER INTERACTION: HORIZON 2020 Roadmap #12;ISBN 978-3-85125-379-5 DOI 10.3217/978-3-85125-379-5 © 2015 Graz University of Technology This roadmap and its appendix can #12;THE FUTURE IN BRAIN/NEURAL-COMPUTER INTERACTION: HORIZON 2020 Roadmap #12;© Kurhan - Fotolia.com 4

  8. Blended Interaction as an Approach for Holistic Control Room Design

    E-Print Network [OSTI]

    Reiterer, Harald

    ranging from energy production to traffic control. Copyright is held by the author/owner(s). CHI'13, April or industrial production plants. In today's control rooms operators mainly interact with these processes via of Konstanz 78464 Konstanz, Germany Simon.Butscher@uni-konstanz.de Jens Müller Human-Computer Interaction

  9. The Interaction Analyzer: A Tool for Debugging Ubiquitous Computing Applications

    E-Print Network [OSTI]

    Kleinrock, Leonard

    The Interaction Analyzer: A Tool for Debugging Ubiquitous Computing Applications Nam Nguyen@cs.ucla.edu, lk@cs.ucla.edu, reiher@cs.ucla.edu Abstract--Ubiquitous computing applications are frequently long, a debugging tool for ubiquitous computing applications that addresses this problem. The Interaction Analyzer

  10. Mobile Interaction with the Internet of Things Sven Siorpaes1

    E-Print Network [OSTI]

    Mobile Interaction with the Internet of Things Sven Siorpaes1 , Gregor Broll1 , Massimo Paolucci2 hand the Internet of Things provides a set of standards and methods to tag objects in the real world and an early prototype currently under development for mobile interactions with the Internet of Things. Hereby

  11. Techniques for Interactive and Interrogative Scientific Volumetric Visualization Robert Haimes

    E-Print Network [OSTI]

    Peraire, Jaime

    Techniques for Interactive and Interrogative Scientific Volumetric Visualization Robert Haimes­interactive visualization environment for the investigation and interrogation of 3D volumetric sci­ entific data. First probes) which have proven to be very useful in the interrogation of volumetric data [3]. VISUAL3 allows

  12. Van der Waals versus optical interaction between metal nanoparticles

    E-Print Network [OSTI]

    Novotny, Lukas

    Henkel2 1 The Institute of Optics, University of Rochester, Rochester, New York 14627, USA 2 Institut für, the maximum interaction energy turns out to be proportional to the plasma frequency, and it is comparable to the thermal energy at T=300 K. On the other hand, the light-induced interaction depends linearly on the light

  13. Constraining Effective Self Interactions of Fermionic Dark Matter

    E-Print Network [OSTI]

    Modak, Kamakshya Prasad

    2015-01-01

    The idea of Dark Matter (DM) with self interaction was invoked to resolve a number of discrepancies between the simulation based predictions by collisionless cold DM and the astrophysical observations on galactic and subgalactic scales. Evidences for self interaction would have striking implications for particle nature of DM. In order to reconcile such astrophysical observations for self interaction with particle properties for DM, we consider the general scenario of self interacting Dirac fermionic DM, $\\chi$. Also since the exact particle physics model for DM is yet to be probed, we simply adopt the effective model independent framework for DM self interaction which occurs via the most general effective 4-fermion operators invariant under both Lorentz and CPT transformations. From the thorough investigation of the interrelations among the parameters in this framework, namely, the effective DM self couplings ($G_{i}$), DM mass ($m_{\\chi}$) and relative velocity ($v_{\\rm rel}$), it can be inferred that $G_{i}...

  14. Capillary Interactions on Fluid Interfaces: Opportunities for Directed Assembly

    E-Print Network [OSTI]

    Nima Sharifi-Mood; Iris B. Liu; Kathleen J. Stebe

    2015-10-19

    A particle placed in soft matter distorts its host and creates an energy landscape. This can occur, for example, for particles in liquid crystals, for particles on lipid bilayers or for particles trapped at fluid interfaces. Such energies can be used to direct particles to assemble with remarkable degrees of control over orientation and structure. These notes explore that concept for capillary interactions, beginning with particle trapping at fluid interfaces, addressing pair interactions on planar interfaces and culminating with curvature capillary migration. Particular care is given to the solution of the associated boundary value problems to determine the energies of interaction. Experimental exploration of these interactions on planar and curved interfaces is described. Theory and experiment are compared. These interactions provide a rich toolkit for directed assembly of materials, and, owing to their close analogy to related systems, pave the way to new explorations in materials science.

  15. Ground-State Magnetization for Interacting Fermions in a Disordered Potential : Kinetic Energy, Exchange Interaction and Off-Diagonal Fluctuations

    E-Print Network [OSTI]

    Philippe Jacquod; A. Douglas Stone

    2001-10-05

    We study a model of interacting fermions in a disordered potential, which is assumed to generate uniformly fluctuating interaction matrix elements. We show that the ground state magnetization is systematically decreased by off-diagonal fluctuations of the interaction matrix elements. This effect is neglected in the Stoner picture of itinerant ferromagnetism in which the ground-state magnetization is simply determined by the balance between ferromagnetic exchange and kinetic energy, and increasing the interaction strength always favors ferromagnetism. The physical origin of the demagnetizing effect of interaction fluctuations is the larger number of final states available for interaction-induced scattering in the lower spin sectors of the Hilbert space. We analyze the energetic role played by these fluctuations in the limits of small and large interaction $U$. In the small $U$ limit we do second-order perturbation theory and identify explicitly transitions which are allowed for minimal spin and forbidden for higher spin. These transitions then on average lower the energy of the minimal spin ground state with respect to higher spin. For large interactions $U$ we amplify on our earlier work [Ph. Jacquod and A.D. Stone, Phys. Rev. Lett. 84, 3938 (2000)] which showed that minimal spin is favored due to a larger broadening of the many-body density of states in the low-spin sectors. Numerical results are presented in both limits.

  16. Resonance production in two-photon interactions

    SciTech Connect (OSTI)

    Roe, N.A.

    1989-02-01

    Resonance production in two-photon interactions is studied using data collected with the ASP detector at the PEP e/sup +/e/sup /minus// storage ring located at the Stanford Linear Accelerator Center. The ASP detector is a non-magnetic lead-glass calorimeter constructed from 632 lead-glass bars. It covers 94% of 4..pi.. in solid angle, extending to within 20/degree/ of the beamline. Lead-scintillator calorimeters extend the coverage to within 21 mr of the beamline on both sides. Energy resolution of ..sqrt..E/10%, where E is the energy is GeV, is achieved for electrons and photons in the lead-glass calorimeter, and particle trajectories are reconstructed with high efficiency. A total luminosity of 108 pb/sup /minus/1/ was collected with the ASP detector at a center-of-mass energy of 29 GeV. The observed process is e/sup +/e/sup /minus// ..-->.. e/sup +/e/sup /minus//..gamma..*..gamma..* ..-->.. e/sup +/e/sup /minus//X, is a pseudoscalar resonance (J/sup PC/ = 0/sup /minus/+/) and ..gamma..* is a virtual (mass /ne/ 0) photon. The outgoing electrons scatter down the beampipe and are not detected. The observed resonances are the /eta/ and /eta/' mesons, with masses of 549 and 958 MeV, respectively. They are detected in the ..gamma gamma.. decay mode; a total of 2380 +- 49 /eta/ ..-->.. ..gamma gamma.. and 568 +- 26 /eta/' ..-->.. ..gamma gamma.. events are observed. From the number of events, the detection efficiency, and the calculated production cross sections the radiative widths, GAMMA/sub ..gamma gamma../, of the /eta/ and /eta/' were measured and found to be: GAMMA/sub ..gamma gamma../(/eta/) = .481 +- .010 +- .047keV and GAMMA/sub ..gamma gamma../(/eta/') = 4.71 +- .22 +- .70keV. These results are in good agreement with the world average values. 67 refs., 42 figs., 20 tabs.

  17. The effect of stoichiometry on vortex flame interactions

    SciTech Connect (OSTI)

    Bell, John B.; Brown, Nancy J.; Day, Marcus S.; Frenklach, Michael; Grcar, Joseph F.; Tonse, Shaheen R.

    1999-12-01

    The interaction of a vortex pair with a premixed flame serves as an important prototype for premixed turbulent combustion. In this study, the authors investigate the interaction of a counter-rotating vortex pair with an initially flat premixed methane flame. The authors focus on characterizing the mechanical nature of the flame-vortex interaction and on the features of the interaction strongly affected by fuel equivalence ratio. The authors compare computational solutions obtained using a time-dependent, two-dimensional adaptive low Mach number combustion algorithm that incorporates GRI-Mech 1.2 for the chemistry, thermodynamics and transport of the chemical species. The authors find that the circulation around the vortex scours gas from the preheat zone in front of the flame, making the interaction extremely sensitive to equivalence ratio. For nearly stoichiometric cases, the peak mole fraction of CH across the flame is relatively insensitive to the vortex whereas for richer flames they observe a substantial and rapid decline in the peak CH mole fraction, commencing early in the flame-vortex interaction. The peak concentration of HCO is found to correlate, in both space and time, with the peak heat release across a broad range of equivalence ratios. The model also predicts a measurable increase in C{sub 2}H{sub 2} as a result of interaction with the vortex, and a marked increase in the low temperature chemistry activity.

  18. The growth of structure in interacting dark energy models

    SciTech Connect (OSTI)

    Caldera-Cabral, Gabriela; Maartens, Roy; Schaefer, Bjoern Malte E-mail: roy.maartens@port.ac.uk

    2009-07-01

    If dark energy interacts with dark matter, there is a change in the background evolution of the universe, since the dark matter density no longer evolves as a{sup ?3}. In addition, the non-gravitational interaction affects the growth of structure. In principle, these changes allow us to detect and constrain an interaction in the dark sector. Here we investigate the growth factor and the weak lensing signal for a new class of interacting dark energy models. In these models, the interaction generalises the simple cases where one dark fluid decays into the other. In order to calculate the effect on structure formation, we perform a careful analysis of the perturbed interaction and its effect on peculiar velocities. Assuming a normalization to today's values of dark matter density and overdensity, the signal of the interaction is an enhancement (suppression) of both the growth factor and the lensing power, when the energy transfer in the background is from dark matter to dark energy (dark energy to dark matter)

  19. Conformation changes and protein folding induced by \\phi^4 interaction

    E-Print Network [OSTI]

    Januar, M; Handoko, L T; 10.1142/9789814335614_0047

    2011-01-01

    A model to describe the mechanism of conformational dynamics in protein based on matter interactions using lagrangian approach and imposing certain symmetry breaking is proposed. Both conformation changes of proteins and the injected non-linear sources are represented by the bosonic lagrangian with an additional \\phi^4 interaction for the sources. In the model the spring tension of protein representing the internal hydrogen bonds is realized as the interactions between individual amino acids and nonlinear sources. The folding pathway is determined by the strength of nonlinear sources that propagate through the protein backbone. It is also shown that the model reproduces the results in some previous works.

  20. Directional interactions and cooperativity between mechanosensitive membrane proteins

    E-Print Network [OSTI]

    Christoph A. Haselwandter; Rob Phillips

    2013-05-24

    While modern structural biology has provided us with a rich and diverse picture of membrane proteins, the biological function of membrane proteins is often influenced by the mechanical properties of the surrounding lipid bilayer. Here we explore the relation between the shape of membrane proteins and the cooperative function of membrane proteins induced by membrane-mediated elastic interactions. For the experimental model system of mechanosensitive ion channels we find that the sign and strength of elastic interactions depend on the protein shape, yielding distinct cooperative gating curves for distinct protein orientations. Our approach predicts how directional elastic interactions affect the molecular structure, organization, and biological function of proteins in crowded membranes.