National Library of Energy BETA

Sample records for dc metropolitan area

  1. Office rent and labor availability in the Chicago Metropolitan Area

    E-Print Network [OSTI]

    Tang, Wencan, M.C.P. Massachusetts Institute of Technology

    2008-01-01

    This paper provides an empirical analysis of office rents using data from the 2000 U.S. Census and TWR office building data in the Chicago Metropolitan Statistical Area. The results indicate that rent levels respond to ...

  2. Abilene Metropolitan Area Metropolitan Transportation Plan 2010-2035 

    E-Print Network [OSTI]

    Abilene Metropolitan Planning Organization

    2010-01-12

    Lindley, former Abilene City Engineer MPO Staff (Non-Voting) Robert Allen, Abilene MPO Transportation Planning Director Dyess AFB SH 351 SH 351 FM 10 82 Jones County JonesCounty Jones County Jones County Jones County Te xt Jones County Jones... Area Urbanized Area Boundary county lines City Limits Freeways and Expressways Major Streets and Highways Railroad 0241Miles Tye Potosi Caps Dyess AFB Abilene Regional Airport Abilene ??? 20 ??? 20 ??? 20 Hamby State Prisons Lake Fort Phantom Hill...

  3. Baskerville, C. A.; and Merguerian, Charles, 1982, Tectonic history of the New York Metropolitan area.

    E-Print Network [OSTI]

    Merguerian, Charles

    Baskerville, C. A.; and Merguerian, Charles, 1982, Tectonic history of the New York Metropolitan area. Urban field mapping of basement (literally in some cases) rocks in the New York Metropolitan area: Baskerville, C. A.; and Merguerian, Charles, 1982, Tectonic history of the New York Metropolitan area (abs

  4. Washington Metropolitan Area Transit Authority: Compressed Natural Gas Transit Bus Evaluation

    SciTech Connect (OSTI)

    Chandler, K.; Eberts, E.; Melendez, M.

    2006-04-01

    Evaluates compressed natural gas (CNG) powered transit buses at Washington Metropolitan Area Transit Authority (WMATA), providing a comparison between them and standard diesel transit buses.

  5. Multiplex networks in metropolitan areas: generic features and local effects

    E-Print Network [OSTI]

    Strano, Emanuele; Dobson, Simon; Barthelemy, Marc

    2015-01-01

    Most large cities are spanned by more than one transportation system. These different modes of transport have usually been studied separately: it is however important to understand the impact on urban systems of the coupling between them and we report in this paper an empirical analysis of the coupling between the street network and the subway for the two large metropolitan areas of London and New York. We observe a similar behaviour for network quantities related to quickest paths suggesting the existence of generic mechanisms operating beyond the local peculiarities of the specific cities studied. An analysis of the betweenness centrality distribution shows that the introduction of underground networks operate as a decentralising force creating congestions in places located at the end of underground lines. Also, we find that increasing the speed of subways is not always beneficial and may lead to unwanted uneven spatial distributions of accessibility. In fact, for London -- but not for New York -- there is ...

  6. Truck transport of RAM: Risk effects of avoiding metropolitan areas

    SciTech Connect (OSTI)

    Mills, G.S.; Neuhauser, K.S.

    1997-11-01

    In the transport of radioactive material (RAM), e.g., spent nuclear fuel (SNF), stakeholders are generally most concerned about risks in high population density areas along transportation routes because of the perceived high consequences of potential accidents. The most significant portions of a transcontinental route and an alternative examined previously were evaluated again using population density data derived from US Census Block data. This method of characterizing population that adjoins route segments offers improved resolution of population density variations, especially in high population density areas along typical transport routes. Calculated incident free doses and accident dose risks for these routes, and the rural, suburban and urban segments are presented for comparison of their relative magnitudes. The results indicate that modification of this route to avoid major metropolitan areas through use of non-Interstate highways increases total risk yet does not eliminate a relatively small urban component of the accident dose risk. This conclusion is not altered by improved resolution of route segments adjoining high density populations.

  7. Photochemical age determinations in the Phoenix metropolitan area L. I. Kleinman,1

    E-Print Network [OSTI]

    Photochemical age determinations in the Phoenix metropolitan area L. I. Kleinman,1 P. H. Daum,1 Y oxidant field campaign conducted in the Phoenix air basin in the late spring of 1998. Sampling was done, Phoenix Citation: Kleinman, L. I., et al., Photochemical age determinations in the Phoenix metropolitan

  8. Impact of primary formaldehyde on air pollution in the Mexico City Metropolitan Area

    E-Print Network [OSTI]

    Lei, Wenfang

    Formaldehyde (HCHO) is a radical source that plays an important role in urban atmospheric chemistry and ozone formation. The Mexico City Metropolitan Area (MCMA) is characterized by high anthropogenic emissions of HCHO ...

  9. FARGO-MOORHEAD METROPOLITAN AREA, ND AND MN FLOOD RISK MANAGEMENT PROJECT

    E-Print Network [OSTI]

    US Army Corps of Engineers

    FARGO-MOORHEAD METROPOLITAN AREA, ND AND MN FLOOD RISK MANAGEMENT PROJECT 23 September 2011, and technically feasible flood risk management for Fargo, North Dakota, Moorhead, Minnesota, and the surrounding area, and a storage area to reduce the existing and future flood risk and damages to public and private

  10. Fuel-Based On-Road Motor Vehicle Emissions Inventory for the Denver Metropolitan Area

    E-Print Network [OSTI]

    Denver, University of

    Fuel-Based On-Road Motor Vehicle Emissions Inventory for the Denver Metropolitan Area Sajal S of obtaining on-road emissions inventories has been developed. This technique calculates emission factors these factors with fuel use data, available from tax records, yields a fuel based emission inventory. We have

  11. If you reside in WASHINGTON, DC - MD -VA - WV your salary will...

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

    If you are employed in the WASHINGTON, DC Metropolitan Area (D.C., Baltimore, Northern VA, Eastern WV, and Southern PA) your salary will range from: Pay Band Pay Plan(s) Minimum...

  12. Tulsa Metropolitan Area Destination 2030 Long Range Transportation Plan 

    E-Print Network [OSTI]

    Indian Nations Council of Governments

    2005-01-01

    , Osage, Rogers, Tulsa, and Wagoner counties. INCOG?s purpose is to promote economy and ef?ciency in government by providing a forum for regional cooperation and by supporting members with planning, development, management, research, and coordination... www.incog.org MAILING ADDRESS 201 W. 5th Street Suite 600 Tulsa, OK 74103-4236 The 1,200 square-mile Tulsa Transportation Management Area (TMA) is comprised of Tulsa County and portions of Creek, Osage, Rogers, and Wagoner counties. The area...

  13. Planning for mitigating climate change risk to metropolitan areas (USA) 

    E-Print Network [OSTI]

    Grover, Himanshu

    2009-06-02

    the growing urban areas in the world. The program coordinated the CO2 reduction efforts of 14 municipalities in Canada, the United States, and Europe. The program proved remarkably successful, with municipalities achieving both significant reductions in CO2... compensation (Rayner et al., 1999). The approach places the responsibility of remediation on the communities that have caused the damage by overuse of the common pool resources. The CCP program itself aims to enlist the higher polluting cities to commit...

  14. The case for pension plan and university endowment equity investment in brownfields in the urban core of major metropolitan areas

    E-Print Network [OSTI]

    Larsen, Tamara C. (Tamara Candace), 1977-

    2003-01-01

    The purpose of this thesis is to present a case for institutional equity investment in brownfields in the urban core of major metropolitan areas. Pension plans and university endowments are the primary institutional investors ...

  15. In situ measurements of speciated atmospheric mercury and the identification of source regions in the Mexico City Metropolitan Area

    E-Print Network [OSTI]

    Rutter, A. P.

    In order to expand the currently limited understanding of atmospheric mercury source-receptor relationships in the Mexico City Metropolitan Area, real time measurements of atmospheric mercury were made at a downtown urban ...

  16. Sanders, J. E.; and Merguerian, Charles, 1992a, Directional history of Pleistocene glaciers inferred from features eroded on bedrock, New York metropolitan area, SE NY.

    E-Print Network [OSTI]

    Merguerian, Charles

    inferred from features eroded on bedrock, New York metropolitan area, SE NY. If a glacier erodes bedrock Tryon Park, Central Park, and in the New York Botanical Garden. To Cite This Abstract: Sanders, J. E on bedrock, New York metropolitan area, SE NY (abs.): Geological Society of America, Abstracts with Programs

  17. Exploring the Raft River geothermal area, Idaho, with the dc...

    Open Energy Info (EERE)

    the dc resistivity method (Abstract) Abstract GEOTHERMAL ENERGY; GEOTHERMAL FIELDS; ELECTRICAL SURVEYS; IDAHO; GEOTHERMAL EXPLORATION; RAFT RIVER VALLEY; ELECTRIC CONDUCTIVITY;...

  18. Area Efficient D/A Converters For Accurate DC Operation Brandon Royce Greenley

    E-Print Network [OSTI]

    Moon, Un-Ku

    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 6.2 Mismatch Modeling For Area Optimization . . . . . . . . . . . . . . . . . . . . . . . 51 6Area Efficient D/A Converters For Accurate DC Operation by Brandon Royce Greenley A THESIS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 5.1 Measurement Setup

  19. The GeorGe WashinGTon UniversiTy | WashinGTon DC The Elliott School's M.A. program in International Affairs

    E-Print Network [OSTI]

    Larsen, Mike

    The GeorGe WashinGTon UniversiTy | WashinGTon DC Overview The Elliott School's M.A. program affairs. Students can take advantage of numerous internship opportunities in the Washington, DC, area to pursue daytime internships in the Washington, DC, metropolitan area. Master of arts in international

  20. (Draft) Community air pollution and mortality: Analysis of 1980 data from US metropolitan areas

    SciTech Connect (OSTI)

    Lipfert, F.W.

    1992-11-01

    1980 data from up to 149 metropolitan areas were used to define cross-sectional associations between community air pollution and ``excess`` human mortality. The regression model proposed by Ozkaynak and Thurston (1987), which accounted for age, race, education, poverty, and population density, was evaluated and several new models were developed. The new models also accounted for migration, drinking water hardness, and smoking, and included a more detailed description of race. Cause-of-death categories analyzed include all causes, all ``non-external`` causes, major cardiovascular diseases, and chronic obstructive pulmonary diseases (COPD). Both annual mortality rates and their logarithms were analyzed. Air quality data were obtained from the EPA AIRS database (TSP, SO{sub 4}{sup =}, Mn, and ozone) and from the inhalable particulate network (PM{sub 15}, PM{sub 2.5} and SO{sub 4}{sup =}, for 63{sup 4} locations). The data on particulates were averaged across all monitoring stations available for each SMSA and the TSP data were restricted to the year 1980. The associations between mortality and air pollution were found to be dependent on the socioeconomic factors included in the models, the specific locations included in the data set, and the type of statistical model used. Statistically significant associations were found as follows: between TSP and mortality due to non-external causes with log-linear models, but not with a linear model betweenestimated 10-year average (1980--90) ozone levels and 1980 non-external and cardiovascular deaths; and between TSP and COPD mortality for both linear and log-linear models. When the sulfate contribution to TSP was subtracted, the relationship with COPD mortality was strengthened.

  1. (Draft) Community air pollution and mortality: Analysis of 1980 data from US metropolitan areas

    SciTech Connect (OSTI)

    Lipfert, F.W.

    1992-11-01

    1980 data from up to 149 metropolitan areas were used to define cross-sectional associations between community air pollution and excess'' human mortality. The regression model proposed by Ozkaynak and Thurston (1987), which accounted for age, race, education, poverty, and population density, was evaluated and several new models were developed. The new models also accounted for migration, drinking water hardness, and smoking, and included a more detailed description of race. Cause-of-death categories analyzed include all causes, all non-external'' causes, major cardiovascular diseases, and chronic obstructive pulmonary diseases (COPD). Both annual mortality rates and their logarithms were analyzed. Air quality data were obtained from the EPA AIRS database (TSP, SO[sub 4][sup =], Mn, and ozone) and from the inhalable particulate network (PM[sub 15], PM[sub 2.5] and SO[sub 4][sup =], for 63[sup 4] locations). The data on particulates were averaged across all monitoring stations available for each SMSA and the TSP data were restricted to the year 1980. The associations between mortality and air pollution were found to be dependent on the socioeconomic factors included in the models, the specific locations included in the data set, and the type of statistical model used. Statistically significant associations were found as follows: between TSP and mortality due to non-external causes with log-linear models, but not with a linear model betweenestimated 10-year average (1980--90) ozone levels and 1980 non-external and cardiovascular deaths; and between TSP and COPD mortality for both linear and log-linear models. When the sulfate contribution to TSP was subtracted, the relationship with COPD mortality was strengthened.

  2. MAKING DO: How Working Families in Seven U.S. Metropolitan Areas Trade Off Housing Costs and Commuting Times

    E-Print Network [OSTI]

    2006-01-01

    San Francisco Washington, D.C. /Baltimore Washington, D.C. /Baltimore Washington, D.C. /Baltimore Washington, D.C. /Baltimore XX XXX X Suburban

  3. Chemical evolution of volatile organic compounds in the outflow of the Mexico City Metropolitan area

    SciTech Connect (OSTI)

    Apel, Eric; Emmons, L.; Karl, Thomas G.; Flocke, Frank M.; Hills, A. J.; Madronich, Sasha; Lee-Taylor, J.; Fried, Alan; Weibring, P.; Walega, J.; Richter, Dirk; Tie, X.; Mauldin, L.; Campos, Teresa; Weinheimer, Andrew J.; Knapp, David; Sive, B.; Kleinman, Lawrence I.; Springston, S.; Zaveri, Rahul A.; Ortega, John V.; Voss, Paul B.; Blake, D. R.; Baker, Angela K.; Warneke, Carsten; Welsh-Bon, Daniel; de Gouw, Joost A.; Zheng, J.; Zhang, Renyi; Rudolph, Jochen; Junkermann, W.; Riemer, D.

    2010-01-01

    The volatile organic compound (VOC) distribution in the Mexico City Metropolitan Area (MCMA) and its evolution as it is uplifted and transported out of the MCMA basin was studied during the 2006 MILAGRO/MIRAGE-Mex field campaign. The results show that in the morning hours in the city center, the VOC distribution is dominated by non-methane hydrocarbons (NMHCs) but with a substantial contribution from oxygenated volatile organic compounds (OVOCs), predominantly from primary emissions. Alkanes account for a large part of the NMHC distribution in terms of mixing ratios. In terms of reactivity, NMHCs also dominate overall, especially in the morning hours. However, in the afternoon, as the boundary layer lifts and air is mixed and aged within the basin, the distribution changes as secondary products are formed. The WRF-Chem (Weather Research and Forecasting with Chemistry) model and MOZART (Model for Ozone and Related chemical Tracers) were able to reproduce the general features of the daytime cycle of the VOC OH reactivity distribution showing that NMHCs dominate the distribution except in the afternoon hours and that the VOC OH reactivity peaks in the early morning due to high morning emissions from the city into a shallow boundary layer. The WRF-Chem and MOZART models showed higher reactivity than the experimental data during the nighttime cycle, perhaps indicating problems with the modeled nighttime boundary layer height. In addition, a plume was studied in which air was advected out of the MCMA and intercepted downwind with the DOE G1 on March 18 and the NCAR C130 one day later on March 19. A number of identical species measured aboard each aircraft gave insight into the chemical evolution of the plume as it aged and was transported as far as 1000 km downwind. Ozone and many OVOCs were photochemically produced in the plume. The WRF-Chem and MOZART models were used to examine the spatial and temporal extent of the March 19 plume and to help interpret the OH reactivity in the downwind plume. The model results generally showed good agreement with experimental results for the total VOC OH reactivity downwind and gave insight into the distributions of VOC chemical classes downwind. A box model with detailed gas phase chemistry (NCAR Master Mechanism), initialized with concentrations observed at one of the ground sites in the MCMA, was used to examine the expected evolution of specific VOCs over a 1-2 day period. The models clearly supported the experimental evidence for NMHC oxidation leading to the formation of OVOCs downwind, which then become the primary fuel for ozone production far away from the MCMA.

  4. Chemical evolution of volatile organic compounds in the outflow of the Mexico City Metropolitan area

    SciTech Connect (OSTI)

    Apel, E.; Springston, S.; Karl, T.; Emmons, L.; Flocke, F.; Hills, A. J.; Madronich, S.; Lee-Taylor, J.; Fried, A.; Weibring, P.; Walega, J.; Richter, D., Tie, X.; Mauldin, L.; Campos, T.; Sive, B.; Kleinman, L.; Springston, S., Zaveri, R.; deGouw, J.; Zheng, J.; Zhang, R.; Rudolph, J.; Junkermann, W.; Riemer, D. D.

    2009-11-01

    The volatile organic compound (VOC) distribution in the Mexico City Metropolitan Area (MCMA) and its evolution as it is uplifted and transported out of the MCMA basin was studied during the 2006 MILAGRO/MIRAGE-Mex field campaign. The results show that in the morning hours in the city center, the VOC distribution is dominated by non-methane hydrocarbons (NMHCs) but with a substantial contribution from oxygenated volatile organic compounds (OVOCs), predominantly from primary emissions. Alkanes account for a large part of the NMHC distribution in terms of mixing ratios. In terms of reactivity, NMHCs also dominate overall, especially in the morning hours. However, in the afternoon, as the boundary layer lifts and air is mixed and aged within the basin, the distribution changes as secondary products are formed. The WRF-Chem (Weather Research and Forecasting with Chemistry) model and MOZART (Model for Ozone and Related chemical Tracers) were able to reproduce the general features of the daytime cycle of the VOC OH reactivity distribution showing that NMHCs dominate the distribution except in the afternoon hours and that the VOC OH reactivity peaks in the early morning due to high morning emissions from the city into a shallow boundary layer. The WRF-Chem and MOZART models showed higher reactivity than the experimental data during the nighttime cycle, perhaps indicating problems with the modeled nighttime boundary layer height. In addition, a plume was studied in which air was advected out of the MCMA and intercepted downwind with the DOE G1 on 18 March and the NCAR C130 one day later on 19 March. A number of identical species measured aboard each aircraft gave insight into the chemical evolution of the plume as it aged and was transported as far as 1000 km downwind. Ozone and many OVOCs were photochemically produced in the plume. The WRF-Chem and MOZART models were used to examine the spatial and temporal extent of the 19 March plume and to help interpret the OH reactivity in the downwind plume. The model results generally showed good agreement with experimental results for the total VOC OH reactivity downwind and gave insight into the distributions of VOC chemical classes downwind. A box model with detailed gas phase chemistry (NCAR Master Mechanism), initialized with concentrations observed at one of the ground sites in the MCMA, was used to examine the expected evolution of specific VOCs over a 1-2 day period. The models clearly supported the experimental evidence for NMHC oxidation leading to the formation of OVOCs downwind, which then become the primary fuel for ozone production far away from the MCMA.

  5. The Future Metropolitan Landscape

    E-Print Network [OSTI]

    Bosselmann, Peter; Ruggeri, Deni

    2007-01-01

    The Future Metropolitan Landscape Peter Bosselmann and DeniMetropolitan Landscape The Future Metropolitan Landscape Thecomplex phenomenon of “The Future Metropolitan Landscape. ”

  6. Comparison of Daytime and Nighttime Populations Adjacent to Interstate Highways in Metropolitan Areas Using LandScan USA

    SciTech Connect (OSTI)

    Johnson, Paul E [ORNL] [ORNL

    2007-01-01

    An article of similar title was published in the International Journal of Radioactive Materials Transport in 1999. The study concluded that the daytime and nighttime populations are not substantially different for the metropolitan areas examined. This study revisits the issue, but using the LandScan USA high resolution population distribution data, which includes daytime and night-time population. Segments of Interstate highway beltways, along with the direct route through the city, for Atlanta, St. Louis, and Kansas City are examined with an 800m buffer from either side of the highways. The day/night ratio of population is higher using the LandScan USA data. LandScan USA daytime and night-time data will be incorporated into the TRAGIS routing model in future.

  7. DC Resistivity Survey (Schlumberger Array) At Raft River Geothermal Area

    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 SECTIONRobertsdale, Alabama (UtilityInstruments Inc Jump to: navigation,(RECP) in DevelopingOilsArea

  8. Use of Facility Contractor Employees for Services to DOE in the Washington, D.C., Area

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

    2001-07-12

    To clarify and modify policies and procedures for management of Department of Energy (DOE), including National Nuclear Security Administration (NNSA), facility contractor employees located in the Washington, D.C., area. Cancels DOE N 350.5. Certified 12-28-06. Canceled by DOE O 350.2A.

  9. Effects of urban land cover modifications in a mesoscale meteorological model on surface temperature and heat fluxes in the Phoenix metropolitan area.

    E-Print Network [OSTI]

    Hall, Sharon J.

    Effects of urban land cover modifications in a mesoscale meteorological model on surface between the two simulations. Mesoscale atmospheric models such as the Pennsylvania State University for the Phoenix metropolitan area was implemented in the fifth- generation PSU/NCAR mesoscale meteorological model

  10. Regional planning and operations architectures as means to foster transportation integration in the Mexico City Metropolitan Area

    E-Print Network [OSTI]

    Ortiz Mantilla, Bernardo Jose, 1977-

    2005-01-01

    The MCMA complexity in political, institutional, economical, and jurisdictional terms has resulted in limited coordination between MCMA authorities that in conjunction with the limited role of metropolitan transportation ...

  11. Emission Testing of Washington Metropolitan Area Transit Authority (WMATA) Natural Gas and Diesel Transit Buses

    SciTech Connect (OSTI)

    Melendez, M.; Taylor, J.; Wayne, W. S.; Smith, D.; Zuboy, J.

    2005-12-01

    An evaluation of emissions of natural gas and diesel buses operated by the Washington Metro Area Transit Authority.

  12. An ozone episode in the Philadelphia metropolitan area Lawrence I. Kleinman,1

    E-Print Network [OSTI]

    , winds were nearly stagnant, allowing local emissions to accumulate. In contrast to typical O3 episodes urban areas. High O3 was also observed in a less likely region near the Delaware-Pennsylvania border by 60­80 ppb. Photochemical model calculations indicate O3 production rates in excess of 20 ppb hÀ1

  13. Community air pollution and mortality: Analysis of 1980 data from US metropolitan areas. 1: Particulate air pollution

    SciTech Connect (OSTI)

    Lipfert, F.W.

    1992-11-01

    1980 data from up to 149 metropolitan areas were used to define cross-sectional associations between community air pollution and excess human mortality. The regression model proposed by Oezkaynak and Thurston, which accounted for age, race, education, poverty, and population density, was evaluated and several new models were developed. The new models also accounted for population change, drinking water hardness, and smoking, and included a more detailed description of race. Cause-of-death categories analyzed include all causes, all non-external causes, major cardiovascular diseases, and chronic obstructive pulmonary diseases (COPD). Both annual mortality rates and their logarithms were analyzed. The data on particulates were averaged across all monitoring stations available for each SMSA and the TSP data were restricted to the year 1980. The associations between mortality and air pollution were found to be dependent on the socioeconomic factors included in the models, the specific locations included din the data set, and the type of statistical model used. Statistically significant associations were found between TSP and mortality due to non-external causes with log-linear models, but not with a linear model, and between TS and COPD mortality for both linear and log-linear models. When the sulfate contribution to TSP was subtracted, the relationship with COPD mortality was strengthened. Scatter plots and quintile analyses suggested a TSP threshold for COPD mortality at around 65 ug/m{sup 3} (annual average). SO{sub 4}{sup {minus}2}, Mn, PM{sup 15}, and PM{sub 2.5} were not significantly associated with mortality using the new models.

  14. Use of Facility Contractor Employees for Services to DOE in the Washington, D.C., Area

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

    1999-04-15

    To clarify and modify policies and procedures for management of Department of Energy (DOE) facility contractor employees located in the Washington, D.C., area. A facility contractor employee is any employee of either a contractor responsible for managing a Department-owned facility, such as a National Laboratory, or a subcontractor of such a contractor. Facility contractor means any contractor performing under a Management and Operating (M&O), Management and Integration (M&I), or Environmental Restoration Management Contractor (ERMC) contract awarded by a DOE contracting officer. Canceled by DOE O 350.2.

  15. Characterization of Fine Particulate Matter (PM) and Secondary PM Precursor Gases in the Mexico City Metropolitan Area

    SciTech Connect (OSTI)

    Molina, Luisa T.; Molina, Mario J.; Volkamer, Rainer; de Foy, Benjamin; Lei, Wenfang; Zavaka, Miguel; Velasco, Erik

    2008-10-31

    This project was one of three collaborating grants funded by DOE/ASP to characterize the fine particulate matter (PM) and secondary PM precursors in the Mexico City Metropolitan Area (MCMA) during the MILAGRO Campaign. The overall effort of MCMA-2006, one of the four components, focused on i) examination of the primary emissions of fine particles and precursor gases leading to photochemical production of atmospheric oxidants and secondary aerosol particles; ii) measurement and analysis of secondary oxidants and secondary fine PM production, with particular emphasis on secondary organic aerosol (SOA), and iii) evaluation of the photochemical and meteorological processes characteristic of the Mexico City Basin. The collaborative teams pursued the goals through three main tasks: i) analyses of fine PM and secondary PM precursor gaseous species data taken during the MCMA-2002/2003 campaigns and preparation of publications; ii) planning of the MILAGRO Campaign and deployment of the instrument around the MCMA; and iii) analysis of MCMA-2006 data and publication preparation. The measurement phase of the MILAGRO Campaign was successfully completed in March 2006 with excellent participation from the international scientific community and outstanding cooperation from the Mexican government agencies and institutions. The project reported here was led by the Massachusetts Institute of Technology/Molina Center for Energy and the Environment (MIT/MCE2) team and coordinated with DOE/ASP-funded collaborators at Aerodyne Research Inc., University of Colorado at Boulder and Montana State University. Currently 24 papers documenting the findings from this project have been published. The results from the project have improved significantly our understanding of the meteorological and photochemical processes contributing to the formation of ozone, secondary aerosols and other pollutants. Key findings from the MCMA-2003 include a vastly improved speciated emissions inventory from on-road vehicles: the MCMA motor vehicles produce abundant amounts of primary PM, elemental carbon, particle-bound polycyclic aromatic hydrocarbons, carbon monoxide and a wide range of air toxics; the feasibility of using eddy covariance techniques to measure fluxes of volatile organic compounds in an urban core and a valuable tool for validating local emissions inventory; a much better understanding of the sources and atmospheric loadings of volatile organic compounds; the first spectroscopic detection of glyoxal in the atmosphere; a unique analysis of the high fraction of ambient formaldehyde from primary emission sources; characterization of ozone formation and its sensitivity to VOCs and NOx; a much more extensive knowledge of the composition, size distribution and atmospheric mass loadings of both primary and secondary fine PM, including the fact that the rate of MCMA SOA production greatly exceeded that predicted by current atmospheric models; evaluations of significant errors that can arise from standard air quality monitors for O3 and NO2; and the implementation of an innovative Markov Chain Monte Carlo method for inorganic aerosol modeling as a powerful tool to analyze aerosol data and predict gas phase concentrations where these are unavailable. During the MILAGRO Campaign the collaborative team utilized a combination of central fixed sites and a mobile laboratory deployed throughout the MCMA to representative urban and boundary sites to measure trace gases and fine particles. Analysis of the extensive 2006 data sets has confirmed the key findings from MCMA-2002/2003; additionally MCMA-2006 provided more detailed gas and aerosol chemistry and wider regional scale coverage. Key results include an updated 2006 emissions inventory; extension of the flux system to measure fluxes of fine particles; better understanding of the sources and apportionment of aerosols, including contribution from biomass burning and industrial sources; a comprehensive evaluation of metal containing particles in a com

  16. Harnessing the Power of the Sun, Solar Impulse Plane Lands in DC Area

    Office of Energy Efficiency and Renewable Energy (EERE)

    Today, Secretary Moniz spoke at an event welcoming the arrival of the solar-powered Solar Impulse plane at Dulles International Airport near Washington, D.C.

  17. Use of Management and Operating or Other Facility Management Contractor Employees for Services to DOE in the Washington, D.C., Area

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

    2003-10-29

    To establish policies and procedures for management of DOE, including NNSA, Management and Operating (M&O) and other facility management contractor employees assigned to the Washington, D.C., area. Cancels DOE O 350.2.

  18. Use of Management and Operating or Other Facility Management Contractor Employees for Services to DOE in the Washington, D.C. Area

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

    2015-05-18

    The Order establishes policies and procedures for managing DOE and NNSA management and operating (M&O) contractors and other facility management contractor employees assigned to the Washington, D.C., area.

  19. Involuntary Mobility, Gender, and Travel Demand Management in Metropolitan Phoenix

    E-Print Network [OSTI]

    Burns, Elizabeth K.

    1995-01-01

    1988. “Transportation in the Phoenix Metropolitan Area. ” In218. Luckingham, Bradford. 1989. Phoenix: The History of aYear Ending December 31, 1995. Phoenix: Maricopa County Trip

  20. Modeling urban growth and land use/land cover change in the Houston Metropolitan Area from 2002 - 2030 

    E-Print Network [OSTI]

    Oguz, Hakan

    2005-08-29

    for the period from 2002 to 2030 is predicted. Within SLEUTH, growth in the Houston CMSA is predominately "organic" with most growth occurring along the urban/rural fringe. Projected increases in urban area from 2002 to 2030 parallel projected increases...

  1. Final report for "Characterization of Fine Particulate Matter (PM) and secondary PM Precursor Gases in the Mexico City Metropolitan Area"

    SciTech Connect (OSTI)

    Prof. Jose-Luis Jimenez

    2009-05-18

    The objectives of this funded project were (a) to further analyze the data collected by our group and collaborators in Mexico City during the MCMA-2003 field campaign, with the goal of further our understanding of aerosol sources and processes; and (b) to deploy several advanced instruments, including the newly developed high-resolution time-of-flight aerosol mass spectrometer (HR-ToF-AMS) and thermal-denuder (TD), during the MILAGRO/MAX-Mex/MCMA-2006 field campaign, and to analyze those data (together with the 2003 data) to provide additional insights on the formation and transformation of aerosols in the Mexico City area. These goals were addressed in collaboration with our project partners, MIT/Molina Center, and Aerodyne Research. Overall this project was very successful, resulting on 22+ journal papers including six “highly cited papers” and three papers that are the most cited in their respective journals (out of several thousand papers) since the year in which they were published. Multiple discoveries, such as the the underestimation of SOA in urban areas even for short photochemical ages, the demonstration that urban POA is of similar or higher volatility than urban SOA, and the first analysis of organic aerosol elemental composition in real-time have been recently published. Several dozen presentations at major US and international conferences and seminars also acknowledged this grant.

  2. Sustainable metropolitan growth strategies : exploring the role of the built environment

    E-Print Network [OSTI]

    Diao, Mi, Ph. D. Massachusetts Institute of Technology

    2010-01-01

    The sustainability of metropolitan areas has been considered one of the most significant social challenges worldwide. Among the various policy options to achieve sustainable metropolitan growth, smart-growth strategies ...

  3. Governing the metropolis : the evolution of cooperative metropolitan governance in Mexico City's public transportation

    E-Print Network [OSTI]

    Cenizal, Callida

    2015-01-01

    What enables cooperation at the metropolitan scale? This thesis explores public transportation planning in the Mexico City metropolitan area (MCMA) for empirical evidence to better understand what institutional, financial, ...

  4. The Origins of Metropolitan Transportation Planning in Travel Demand Forecasting, 1944-1962

    E-Print Network [OSTI]

    Deutsch, Cheryl

    2013-01-01

    predictions for the Detroit area. In Highway Research Board4: Desire line charts from Detroit, 1942………………………………………………….transportation research in the Detroit Metropolitan Area

  5. Supplemental Requirements for the Use of Management and Operating or Other Facility Management Contractor Employees for Services to DOE in the Washington, D.C., Area

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

    2005-10-19

    The Notice supplements review and approval requirements of DOE O 350.2A, Use of Management and Operating (M&O) or Other Facility Management Contractor Employees for Services to DOE in the Washington, D.C., Area, dated 10-29-03.

  6. Use of Management and Operating or Other Facility Management Contractor Employees for Services to DOE in the Washington, D.C. Area

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

    2011-05-31

    To establish policies and procedures for management of Department of Energy (DOE), including National Nuclear Security Administration (NNSA), management and operating (M&O) and other facility management contractor employees assigned to the Washington, D.C. area. Supersedes DOE O 350.2A

  7. A gradient analysis of urban landscape pattern: a case study from the Phoenix metropolitan region, Arizona, USA

    E-Print Network [OSTI]

    Wu, Jianguo "Jingle"

    A gradient analysis of urban landscape pattern: a case study from the Phoenix metropolitan region the spatial pattern of urbanization in the Phoenix metropolitan area, Arizona, USA. Several landscape metrics

  8. DRAFT - DOE O 350.2C, Use of Management and Operating or Other Facility Management Contractor Employees for Services to DOE in the Washington, D.C. Area

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

    The Order establishes policies and procedures for managing DOE and NNSA management and operating (M&O) contractors and other facility management contractor employees assigned to the Washington, D.C., area.

  9. Hot Springs Metropolitan Planning Organization 2030 Long Range Transportation Plan 

    E-Print Network [OSTI]

    Hot Springs Metropolitan Planning Organization

    2005-11-03

    of Mountain Pine Hot Springs Village The Greater Hot Springs Chamber of Commerce The Arkansas State Highway and Transportation Department In Cooperation With United States Department of Transportation Federal Highway Administration Federal Transit... Administration 2030 Long Range Transportation Plan for the Hot Springs Area Metropolitan Planning Organization This LRTP has been funded with federal Metropolitan Planning (PL) funds through the Federal Highway Administration, Section 5303 funds...

  10. 2030 Metropolitan Transportation Plan for the Albuquerque Metropolitan Planning Area 

    E-Print Network [OSTI]

    Mid-Region Metropolitan Planning Organization

    2007-04-26

    Transportation Planner Diane Scena, Trails Planner Mark A. Sprick, AICP, Transportation Planning Manager Barbara Thomas, Secretary-Transportation/Water Kendra Watkins, Transportation Planner Eric Webster, Transportation Planner ?4?Q?F?D?J?B?M???5?I?B?O?L... Manager Bruce Rizzieri, Regional Transit Manager Tony Sylvester, AICP, Special Projects Planner Loretta Tollefson, AICP, Special Projects Manager-Mid-Region Rural Transportation Planning Organization ?4?Q?F?D?J?B?M???5?I?B?O?L?T???U?P???U?I?F???.?3...

  11. The Metropolitan Water District of Southern California

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

    ERcomments@hq.doe.gov Comments on the Department of Energy's Quadrennial Energy Review: Water-Energy Nexus The Metropolitan Water District of Southern California (Metropolitan) is...

  12. A COMPARISON OF OBJECT-BASED WITH PIXEL-BASED LAND COVER CHANGE DETECTION IN THE BALTIMORE METROPOLITAN AREA USING MULTITEMPORAL

    E-Print Network [OSTI]

    Vermont, University of

    A COMPARISON OF OBJECT-BASED WITH PIXEL-BASED LAND COVER CHANGE DETECTION IN THE BALTIMORE portions of Baltimore City and Baltimore County, Maryland, USA. The results indicated that the object- classification change detection, high-spatial resolution image, urban area, Baltimore, LTER. 1. INTRODUCTION

  13. Topographically-Based Real-Time Traffic Anomaly Detection in a Metropolitan Highway System

    E-Print Network [OSTI]

    Grossman, Robert

    Topographically-Based Real-Time Traffic Anomaly Detection in a Metropolitan Highway System Rajmonda metropolitan area. Our Chicago Alert System (CAS) considers both the spatial and temporal aspects of the data of attack, the need for real-time traffic management is crucial. Real-time traffic management encompasses

  14. Request to Cancel Department of Energy (DOE) Order 350.2B, Use of Management and Operating or other Facility Management Contractor Employees for Services to DOE in the Washington D.C. Area

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

    2015-11-23

    DOE is canceling this directive and its associated DOE-wide mandated requirements in recognition of Departmental management and oversight improvements of Headquarters sponsored assignments to the Washington D.C. area and opting to implement as program specific risk based management approach to these actions.

  15. Census Snapshot: Washington, DC

    E-Print Network [OSTI]

    Romero, Adam P.; Baumle, Amanda K; Badgett, M.V. Lee; Gates, Gary J

    2007-01-01

    INSTITUTE CENSUS SNAPSHOT | WASHINGTON, DC. | DECEMBER 2007WASHINGTON, D.C. Adam P. Romero, Public Policy Fellow AmandaINSTITUTE CENSUS SNAPSHOT | WASHINGTON, DC. | DECEMBER 2007

  16. Fargo-Moorhead Metropolitan Flood Risk Management Feasibility Study

    E-Print Network [OSTI]

    US Army Corps of Engineers

    Fargo-Moorhead Metropolitan Flood Risk Management Feasibility Study North Dakota and Minnesota Quality Bulletin for Peer Review released December 16, 2004. This flood risk management feasibility study flood risk management and recreation needs of the study area in February 2010. An IEPR of the draft

  17. Pricing Schemes for Metropolitan Traffic Data Markets Negin Golrezaei1

    E-Print Network [OSTI]

    Shahabi, Cyrus

    Marshall School of Business, University of Southern California, Los Angeles, CA 90089 {golrezae, nazerzad of the pricing schemes applicable to data marketplaces in the context of transportation traffic data. Traffic congestion is a growing problem in many metropolitan areas. It not only wastes our time and energy

  18. Unequal development : decentralization and fiscal disparities in the Metropolitan Zone of the Valley of Mexico

    E-Print Network [OSTI]

    Raich, Uri

    2006-01-01

    This study is about the impact of decentralization in metropolitan areas. Studies of fiscal decentralization have largely centered on the formal tiers of government, without looking at the effects of this process on the ...

  19. Metropolitan governance and local land use planning in Boston, Denver, and Portland

    E-Print Network [OSTI]

    Rosan, Christina

    2007-01-01

    Metropolitan areas across the U.S. are characterized by sprawling development which uses larger amounts of open space than necessary, leads to the inefficient use of energy and water, increases social inequality, and causes ...

  20. High Speed CMOS Output Stage for Integrated DC-DC Converters Wai Tung Ng*, Marian Changl

    E-Print Network [OSTI]

    Ng, Wai Tung

    to attain maximum channel width per unit area for low on-resistance. A typical MF layout and its equivalent DC/DC converters is characterized by power conversion efficiency, transient response, size and cost is introduced to enhance the switching speed and power conversion efficiency of low voltage integrated DC

  1. MANCHESTER METROPOLITAN Financial Statements

    E-Print Network [OSTI]

    (includes share of associated company's result) (199,979) (185,386) Impairment on properties in an impairment charge of £7.7m The University has during the past year been planning the implementation of six seven campus areas down to three and will ensure the University has a sustainable estate for the future

  2. Metropolitan Road Traffic Simulation on FPGAs.

    SciTech Connect (OSTI)

    Tripp J. L. (Justin L.); Mortveit, H. S. (Henning S.); Hansson, A. A. (Anders A.); Gokhale, M. (Maya)

    2005-01-01

    This work demonstrates that road traffic simulation of entire metropolitan areas is possible with reconfigurable supercomputing that combines 64-bit microprocessors and FPGAs in a high bandwidth, low latency interconnect. Previously, traffic simulation on FPGAs was limited to very short road segments or required a very large number of FPGAs. Our data streaming approach overcomes scaling issues associated with direct implementations and still allows for high-level parallelism by dividing the data sets between hardware and software across the reconfigurable supercomputer. Using one FPGA on the Cray XD1 supercomputer, we are able to achieve a 34.4 x speed up over the AMD microprocessor. System integration issues must be optimized to exploit this speedup in the overall simulation.

  3. Radio frequency dc-dc power conversion

    E-Print Network [OSTI]

    Rivas, Juan, 1976-

    2007-01-01

    THIS THESIS addresses the development of system architectures and circuit topologies for dc-dc power conversion at very high frequencies. The systems architectures that are developed are structured to overcome limitations ...

  4. Building Scale DC Microgrids

    E-Print Network [OSTI]

    Marnay, Chris

    2013-01-01

    however, DC was less amenable to transmission over longtransmission 32 km to Buffalo, even though the loads at that time were entirely DC.

  5. Building Scale DC Microgrids

    E-Print Network [OSTI]

    Marnay, Chris

    2014-01-01

    ABORATORY Building Scale DC Microgrids Chris Marnay, Stevenemployer. Building Scale DC Microgrids Chris Marnay, IEEEgenerally known as microgrids (or µgrids). The dominance of

  6. Monroe Urbanized Area MTP 2035 

    E-Print Network [OSTI]

    Monroe Urbanized Area Metropolitan Planning Organization

    2010-10-31

    /plain; charset=ISO-8859-1 Monroe Urbanized Area MTP 2035 The 2035 Metropolitan Transportation Plan for the Monroe Urbanized Area Developed for The Monroe Urbanized Area Metropolitan Planning Organization and The Louisiana Department... of Transportation and Development Developed by In association with Neel-Schaffer, Inc. **DRAFT** Adopted Date Here This document was prepared in cooperation with: The Monroe Urbanized Area MPO Technical Advisory Committee and The Louisiana...

  7. Washington DC Reliability Requirements and the Need to Operate Mirant's Potomac River Generation Station to Support Local Area Reliability.pdf

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirley Ann Jackson About1996HowFOAShowingFuel EfficiencyWashington , DC 20585 April 15, 2013

  8. Employee and Student Trip Reduction: First Year Results from Metropolitan Phoenix

    E-Print Network [OSTI]

    Burns, Elizabeth K.

    1994-01-01

    Results from Metropolitan Phoenix Elizabeth K. Bums Workingfrom Metropolitan Phoenix ElizabethK. Burns Department ofCounty Regional metropolitan Phoenix~ Arizona. compared with

  9. Metropolitan Accessibility and Transportation Sustainability:Sustainability

    E-Print Network [OSTI]

    Papalambros, Panos

    Metropolitan Accessibility and Transportation Sustainability:Sustainability: Comparative Reduce (fulfillment of)Promote Sustainability: Meet needs of (fulfillment of) needs present Institute SMART Sustainable Mobility and Accessibility Research andSMART Sustainable Mobility

  10. Washington DC Reliability Requirements and the Need to Operate...

    Energy Savers [EERE]

    DC Reliability Requirements and the Need to Operate Mirant's Potomac River Generation Station to Support Local Area Reliability (Oak Ridge National Laboratory 2005)...

  11. DC Resistivity Survey (Schlumberger Array) At Raft River Geothermal...

    Open Energy Info (EERE)

    Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: DC Resistivity Survey (Schlumberger Array) At Raft River Geothermal Area (1974-1975) Exploration...

  12. DC source assemblies

    DOE Patents [OSTI]

    Campbell, Jeremy B; Newson, Steve

    2013-02-26

    Embodiments of DC source assemblies of power inverter systems of the type suitable for deployment in a vehicle having an electrically grounded chassis are provided. An embodiment of a DC source assembly comprises a housing, a DC source disposed within the housing, a first terminal, and a second terminal. The DC source also comprises a first capacitor having a first electrode electrically coupled to the housing, and a second electrode electrically coupled to the first terminal. The DC source assembly further comprises a second capacitor having a first electrode electrically coupled to the housing, and a second electrode electrically coupled to the second terminal.

  13. DraftApril 7, 2009 Features of Climate-Smart Metropolitan Economies

    E-Print Network [OSTI]

    emissions of carbon dioxide.) Residential and commercial buildings account for 39 percent of the carbon. To help provide benchmarks and expand our understanding of carbon emissions, this chapter quantifies highway transportation and residential carbon emissions of the 100 largest U.S. metropolitan areas in 2000

  14. DraftApril 7, 2009 Features of Climate-Smart Metropolitan Economies

    E-Print Network [OSTI]

    , such as coal and oil, for energy.3 (Here, the terms carbon emissions or carbon footprint both indicate of the economy, and (4) carbon intensity of the energy system.8 Shrinking the nation's carbon footprint, while solving environmental challenges. With supportive federal policies, metropolitan areas can provide the low-carbon

  15. U.S. Metropolitan Spatial Structure and Employment Growth 

    E-Print Network [OSTI]

    Huang, Xiaoyan

    2014-08-13

    This study explores the influence of US metropolitan spatial structure evolution on regional employment growth rate. The first part of this study investigates the evolution of US metropolitan spatial structures from 2000 to 2010. At the macro level...

  16. Building Scale DC Microgrids

    E-Print Network [OSTI]

    Marnay, Chris

    2014-01-01

    involves DC directly, e.g. fuel cells, fuels, but electricthe likely emergence of fuel cells and required batteriesphotovoltaic cells, fuel cells, power quality, converters,

  17. Building Scale DC Microgrids

    E-Print Network [OSTI]

    Marnay, Chris

    2013-01-01

    the likely emergence of fuel cells and required batteriesphotovoltaic cells, fuel cells, power quality, converters,DC) generation, e.g. fuel cells (FCs), from combustion

  18. Building Scale DC Microgrids

    E-Print Network [OSTI]

    Marnay, Chris

    2013-01-01

    resources, a 10 kW vertical axis wind turbine, and Fig. 4AC-grid Fig. 3. Vertical axis wind turbine in the AIT DC µ

  19. Building Scale DC Microgrids

    E-Print Network [OSTI]

    Marnay, Chris

    2014-01-01

    resources, a 10 kW vertical axis wind turbine, and Fig. 4the µgrid Fig. 3. Vertical axis wind turbine in the AIT DC µ

  20. Multilevel DC link inverter

    DOE Patents [OSTI]

    Su, Gui-Jia

    2003-06-10

    A multilevel DC link inverter and method for improving torque response and current regulation in permanent magnet motors and switched reluctance motors having a low inductance includes a plurality of voltage controlled cells connected in series for applying a resulting dc voltage comprised of one or more incremental dc voltages. The cells are provided with switches for increasing the resulting applied dc voltage as speed and back EMF increase, while limiting the voltage that is applied to the commutation switches to perform PWM or dc voltage stepping functions, so as to limit current ripple in the stator windings below an acceptable level, typically 5%. Several embodiments are disclosed including inverters using IGBT's, inverters using thyristors. All of the inverters are operable in both motoring and regenerating modes.

  1. Columbia metropolitan Convention Center Columbia, South Carolina

    E-Print Network [OSTI]

    Valtorta, Marco

    at the Columbia metropolitan Convention Center Columbia, South Carolina marCh 23-25, 2011 Bringing Center 101 linColn Street Bringing Open SOurce tO the SOutheaSt Columbia, South Carolina developerS, edu team member, Rails Bringing Open SOurce tO the SOutheaSt Columbia, South Carolina POSSCON 2010 kicked

  2. Metropolitan Community College (Missouri-all locations)

    E-Print Network [OSTI]

    OF KANSAS Department of Design Photo Media-B.F.A Number to call at KU for advising: (785) 864-3500 Website/Senior level for graduation. Photo Media Requirements: KU Course Requirements Metropolitan Course Equivalents Critical Reading and Writing 3 ENGL 102 Composition and Reading II 3 GE21 GE11 Core: Core ENGL 209 Intro

  3. San Angelo Metropolitan Transportation Plan 

    E-Print Network [OSTI]

    San Angelo Metropolitan Planning Organization

    2009-11-16

    2-5 Projected Population for Tom Green County and the San Angelo MTP Planning Area ....................................................................................................................................................... 25 Table 2-6... Table 6-3 Estimated Costs for all LCI-related Improvements ...................................................... 84 Table 10-1 Financial Plan Roadway by Category ...................................................................... 118 Table 10-2...

  4. TransBorder 2035 Metropolitan Transportation Plan 

    E-Print Network [OSTI]

    El Paso Metropolitan Planning Organization

    2007-11-16

    Investigacion y Planeacion (IMIP), Tigua Tribal Government, New Mexico Environmental Department, Texas Commission on Environmental Quality, City of El Paso, and surrounding towns. The MPO staff is tasked with establishing an impartial setting for effective... Metropolitan Planning Organization www.elpasompo.org 3.3 Environmental Justice Environmental Justice (EJ) is a concept that has a major impact in the transportation planning process. The goal of EJ, as it relates to transportation...

  5. Chicago Metropolitan Agency for Planning Data Dashboard | Department...

    Energy Savers [EERE]

    Metropolitan Agency for Planning Data Dashboard More Documents & Publications Austin Energy Data Dashboard Massachusetts -- SEP Data Dashboard Phoenix, Arizona Data Dashboard...

  6. New Orleans Urbanized Area Metropolitan Transportation Plan FY 2032 

    E-Print Network [OSTI]

    New Orleans Urbanized Area Regional Planning Commission

    2007-06-12

    Road Corridor---------------------------------------------------------------------------------- 52 Earhart Corridor--------------------------------------------------------------------------------------- 53 Causeway Boulevard Widening...

  7. DC attenuation meter

    DOE Patents [OSTI]

    Hargrove, Douglas L.

    2004-09-14

    A portable, hand-held meter used to measure direct current (DC) attenuation in low impedance electrical signal cables and signal attenuators. A DC voltage is applied to the signal input of the cable and feedback to the control circuit through the signal cable and attenuators. The control circuit adjusts the applied voltage to the cable until the feedback voltage equals the reference voltage. The "units" of applied voltage required at the cable input is the system attenuation value of the cable and attenuators, which makes this meter unique. The meter may be used to calibrate data signal cables, attenuators, and cable-attenuator assemblies.

  8. DC arc weld starter

    DOE Patents [OSTI]

    Campiotti, Richard H. (Tracy, CA); Hopwood, James E. (Oakley, CA)

    1990-01-01

    A system for starting an arc for welding uses three DC power supplies, a high voltage supply for initiating the arc, an intermediate voltage supply for sustaining the arc, and a low voltage welding supply directly connected across the gap after the high voltage supply is disconnected.

  9. Alexandria/Pineville Metropolitan Transportation Plan MTP 2029 

    E-Print Network [OSTI]

    Rapides Area Planning Commission

    2005-01-01

    stream_source_info Alexandria_Pineville Metropolitan Transportation Plan MTP 2029.pdf.txt stream_content_type text/plain stream_size 90 Content-Encoding ISO-8859-1 stream_name Alexandria_Pineville Metropolitan Transportation Plan MTP...

  10. DC Resistivity Survey (Dipole-Dipole Array) At Mt Princeton Hot...

    Open Energy Info (EERE)

    1971) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: DC Resistivity Survey (Dipole-Dipole Array) At Mt Princeton Hot Springs Geothermal Area...

  11. Historical Material Analysis of DC745U Pressure Pads

    SciTech Connect (OSTI)

    Ortiz-Acosta, Denisse [Los Alamos National Laboratory

    2012-07-30

    As part of the Enhance Surveillance mission, it is the goal to provide suitable lifetime assessment of stockpile materials. This report is an accumulation of historical publication on the DC745U material and their findings. It is the intention that the B61 LEP program uses this collection of data to further develop their understanding and potential areas of study. DC745U is a commercially available silicone elastomer consisting of dimethyl, methyl-phenyl, and methyl-vinyl siloxane repeat units. Originally, this material was manufactured by Dow Corning as Silastic{reg_sign} DC745U at their manufacturing facility in Kendallville, IN. Recently, Dow Corning shifted this material to the Xiameter{reg_sign} brand product line. Currently, DC745U is available through Xiameter{reg_sign} or Dow Corning's distributor R. D. Abbott Company. DC745U is cured using 0.5 wt% vinyl-specific peroxide curing agent known as Luperox 101 or Varox DBPH-50. This silicone elastomer is used in numerous parts, including two major components (outer pressure pads and aft cap support) in the W80 and as pressure pads on the B61. DC745U is a proprietary formulation, thus Dow Corning provides limited information on its composition and properties. Based on past experience with Dow Corning, DC745U is at risk of formulation changes without notification to the costumer. A formulation change for DC745U may have a significant impact because the network structure is a key variable in determining material properties. The purpose of this report is to provide an overview of historical DC745U studies and identify gaps that need to be addressed in future work. Some of the previous studies include the following: 1. Spectroscopic characterization of raw gum stock. 2. Spectroscopic, thermal, and mechanical studies on cured DC745U. 3. Nuclear Magnetic Resonance (NMR) and solvent swelling studies on DC745U with different crosslink densities. 4. NMR, solvent swelling, thermal, and mechanical studies on thermally aged DC745U. 5. NMR, solvent swelling, thermal, and mechanical studies on radiolytically aged DC745U. Each area is reviewed and further work is suggested to improve our understanding of DC745U for systems engineering, surveillance, aging assessments, and lifetime assessment.

  12. Auxiliary resonant DC tank converter

    DOE Patents [OSTI]

    Peng, Fang Z. (Knoxville, TN)

    2000-01-01

    An auxiliary resonant dc tank (ARDCT) converter is provided for achieving soft-switching in a power converter. An ARDCT circuit is coupled directly across a dc bus to the inverter to generate a resonant dc bus voltage, including upper and lower resonant capacitors connected in series as a resonant leg, first and second dc tank capacitors connected in series as a tank leg, and an auxiliary resonant circuit comprising a series combination of a resonant inductor and a pair of auxiliary switching devices. The ARDCT circuit further includes first clamping means for holding the resonant dc bus voltage to the dc tank voltage of the tank leg, and second clamping means for clamping the resonant dc bus voltage to zero during a resonant period. The ARDCT circuit resonantly brings the dc bus voltage to zero in order to provide a zero-voltage switching opportunity for the inverter, then quickly rebounds the dc bus voltage back to the dc tank voltage after the inverter changes state. The auxiliary switching devices are turned on and off under zero-current conditions. The ARDCT circuit only absorbs ripples of the inverter dc bus current, thus having less current stress. In addition, since the ARDCT circuit is coupled in parallel with the dc power supply and the inverter for merely assisting soft-switching of the inverter without participating in real dc power transmission and power conversion, malfunction and failure of the tank circuit will not affect the functional operation of the inverter; thus a highly reliable converter system is expected.

  13. Transit Access and Regional Coordination in Metropolitan Detroit

    E-Print Network [OSTI]

    LaRose, Jeremiah; Netto, Alyssa; Thomas, Trevor

    2014-01-01

    groups on both sides of Detroit’s borders, and a great dealbadly needed transit service in Detroit. Planetizen, May 22.Coordination in Metropolitan Detroit Jeremiah LaRose, MURP '

  14. Efficient detection of contagious outbreaks in massive metropolitan encounter networks

    E-Print Network [OSTI]

    Sun, Lijun

    Physical contact remains difficult to trace in large metropolitan networks, though it is a key vehicle for the transmission of contagious outbreaks. Co-presence encounters during daily transit use provide us with a city-scale ...

  15. Improved DC Gun Insulator

    SciTech Connect (OSTI)

    M.L. Neubauer, K.B. Beard, R. Sah, C. Hernandez-Garcia, G. Neil

    2009-05-01

    Many user facilities such as synchrotron light sources and free electron lasers require accelerating structures that support electric fields of 10-100 MV/m, especially at the start of the accelerator chain where ceramic insulators are used for very high gradient DC guns. These insulators are difficult to manufacture, require long commissioning times, and have poor reliability, in part because energetic electrons bury themselves in the ceramic, creating a buildup of charge and causing eventual puncture. A novel ceramic manufacturing process is proposed. It will incorporate bulk resistivity in the region where it is needed to bleed off accumulated charge caused by highly energetic electrons. This process will be optimized to provide an appropriate gradient in bulk resistivity from the vacuum side to the air side of the HV standoff ceramic cylinder. A computer model will be used to determine the optimum cylinder dimensions and required resistivity gradient for an example RF gun application. A ceramic material example with resistivity gradient appropriate for use as a DC gun insulator will be fabricated by glazing using doping compounds and tested.

  16. Design Considerations for Very High Frequency dc-dc Converters

    E-Print Network [OSTI]

    Perreault, Dave

    the gating power while ensuring fast on- off transitions of the semiconductor switch. The rectifier of switching power converters operating at greatly increased switching frequencies. Greatly increasedDesign Considerations for Very High Frequency dc-dc Converters Juan M. Rivas, David Jackson, Olivia

  17. DOE Designates Southwest Area and Mid-Atlantic Area National...

    Energy Savers [EERE]

    Corridors DOE Designates Southwest Area and Mid-Atlantic Area National Interest Electric Transmission Corridors October 2, 2007 - 2:50pm Addthis WASHINGTON, DC - U.S. Department...

  18. Aalborg Universitet Power flow analysis for DC voltage droop controlled DC microgrids

    E-Print Network [OSTI]

    Vasquez, Juan Carlos

    Aalborg Universitet Power flow analysis for DC voltage droop controlled DC microgrids Li, Chendan). Power flow analysis for DC voltage droop controlled DC microgrids. In Proceedings of the 11th.aau.dk on: juli 07, 2015 #12;Power flow analysis for DC voltage droop controlled DC microgrids Chendan Li

  19. Triple voltage dc-to-dc converter and method

    DOE Patents [OSTI]

    Su, Gui-Jia (Knoxville, TN)

    2008-08-05

    A circuit and method of providing three dc voltage buses and transforming power between a low voltage dc converter and a high voltage dc converter, by coupling a primary dc power circuit and a secondary dc power circuit through an isolation transformer; providing the gating signals to power semiconductor switches in the primary and secondary circuits to control power flow between the primary and secondary circuits and by controlling a phase shift between the primary voltage and the secondary voltage. The primary dc power circuit and the secondary dc power circuit each further comprising at least two tank capacitances arranged in series as a tank leg, at least two resonant switching devices arranged in series with each other and arranged in parallel with the tank leg, and at least one voltage source arranged in parallel with the tank leg and the resonant switching devices, said resonant switching devices including power semiconductor switches that are operated by gating signals. Additional embodiments having a center-tapped battery on the low voltage side and a plurality of modules on both the low voltage side and the high voltage side are also disclosed for the purpose of reducing ripple current and for reducing the size of the components.

  20. Multi-Level DC/DC Power Conversion System with Multiple DC Sources

    E-Print Network [OSTI]

    Tolbert, Leon M.

    boost converter. Experimental results are provided to confirm the analysis and control concept. I, instead of connecting all batteries in series as one power source and a bi-directional boost converter. INTRODUCTION Traditional dc/dc converters require at least one inductive component, which is bulky, heavy

  1. DC-DC converter current source fed naturally commutated brushless DC motor drive 

    E-Print Network [OSTI]

    Khopkar, Rahul Vijaykumar

    2004-11-15

    the hard switchings by natural turn-off, thereby eliminating the heatsinks as well as the large dc link capacitor. A controlled rectifier together with a large inductor act as the current source. The only disadvantage is the large value of the dc link...

  2. Bi-Directional DC-DC Converter for PHEV Applications

    SciTech Connect (OSTI)

    Abas Goodarzi

    2011-01-31

    Plug-In Hybrid Electric Vehicles (PHEV) require high power density energy storage system (ESS) for hybrid operation and high energy density ESS for Electric Vehicle (EV) mode range. However, ESS technologies to maximize power density and energy density simultaneously are not commercially feasible. The use of bi-directional DC-DC converter allows use of multiple energy storage, and the flexible DC-link voltages can enhance the system efficiency and reduce component sizing. This will improve fuel consumption, increase the EV mode range, reduce the total weight, reduce battery initial and life cycle cost, and provide flexibility in system design.

  3. DeKalb County/Metropolitan Atlanta Alternative Fuel and Advanced...

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

    60tifrancis2012o.pdf More Documents & Publications DeKalb CountyMetropolitan Atlanta Alternative Fuel and Advanced Technology Vehicle Project DeKalb CountyMetropolitan...

  4. DeKalb County/Metropolitan Atlanta Alternative Fuel and Advanced...

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

    vt060francis2010p.pdf More Documents & Publications DeKalb CountyMetropolitan Atlanta Alternative Fuel and Advanced Technology Vehicle Project DeKalb CountyMetropolitan...

  5. DeKalb County/Metropolitan Atlanta Alternative Fuel and Advanced...

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

    60tifrancis2011p.pdf More Documents & Publications DeKalb CountyMetropolitan Atlanta Alternative Fuel and Advanced Technology Vehicle Project DeKalb CountyMetropolitan...

  6. DC Pro Software Tool Suite

    SciTech Connect (OSTI)

    2009-04-01

    This fact sheet describes how DOE's Data Center Energy Profiler (DC Pro) Software Tool Suite and other resources can help U.S. companies identify ways to improve the efficiency of their data centers.

  7. Catalog of DC Appliances and Power Systems

    SciTech Connect (OSTI)

    Garbesi, Karina; Vossos, Vagelis; Shen, Hongxia

    2010-10-13

    This document catalogs the characteristics of current and potential future DC products and power systems.

  8. Interaction of DC-DC converters and submarine power cables in offshore wind farm DC networks 

    E-Print Network [OSTI]

    Wood, Thomas Benedict

    2014-06-30

    Offshore wind power is attracting increasing levels of research and investment. The use of HVDC transmission and the development of DC grids are topics with similar high levels of interest that go hand in hand with the ...

  9. Generating Isolated Outputs in a Multilevel Modular Capacitor Clamped DC-DC Converter

    E-Print Network [OSTI]

    Tolbert, Leon M.

    -dc converters based on inductive energy transfer method (IETM) such as buck, boost, and buck-boost converter967 Generating Isolated Outputs in a Multilevel Modular Capacitor Clamped DC-DC Converter (MMCCC clamped dc-dc converter. The multilevel modular capacitor clamped converter (MMCCC) has several key

  10. Metropolitan Transportation Plan Fiscal Year 2010 - 2035 

    E-Print Network [OSTI]

    Corpus Christi Metropolitan Planning Organization

    2009-12-03

    .................................................................................................................... 23 Urban Action Plan ........................................................................................................................... 24 Table 1 - Functional Systems in Urbanized Areas... ........................................................................... 28 Critical Incident Planning ................................................................................................................ 29 CHAPTER 5 PUBLIC TRANSPORTATION...

  11. Green optical network design : power optimization of wide area and metropolitan area networks

    E-Print Network [OSTI]

    Lin, Katherine Xiaoyan

    2011-01-01

    Advancements in technology are fueling huge growth in network traffic capacity. Demand for low cost, reliable, and high bitrate transmissions grows 40-110% internationally every year. To date, most research has focused on ...

  12. The structure of agriculture in metropolitan and nonmetropolitan America 

    E-Print Network [OSTI]

    Scott, Michelle L

    2003-01-01

    the following questions: (1) What was the structure of U.S. agricultural production systems in 1992 and had this structure changed by 1997? (2) What was the relationship between metropolitan proximity and U.S. agristructure and its changes from 1992 to 1997...

  13. D.C. Water Resources Research Center Annual Technical Report

    E-Print Network [OSTI]

    of DC municipal drinking water quality through random sampling and testing of residential homes that could literally transform the lives of people, especially in the area of water availability. Mr. David. The Institute and the Cooperative Extension Service also added a solar powered weather station to the site

  14. Light-weight DC to very high voltage DC converter

    DOE Patents [OSTI]

    Druce, R.L.; Kirbie, H.C.; Newton, M.A.

    1998-06-30

    A DC-DC converter capable of generating outputs of 100 KV without a transformer comprises a silicon opening switch (SOS) diode connected to allow a charging current from a capacitor to flow into an inductor. When a specified amount of charge has flowed through the SOS diode, it opens up abruptly; and the consequential collapsing field of the inductor causes a voltage and current reversal that is steered into a load capacitor by an output diode. A switch across the series combination of the capacitor, inductor, and SOS diode closes to periodically reset the SOS diode by inducing a forward-biased current. 1 fig.

  15. Switching coordination of distributed dc-dc converters for highly efficient photovoltaic power plants

    DOE Patents [OSTI]

    Agamy, Mohammed; Elasser, Ahmed; Sabate, Juan Antonio; Galbraith, Anthony William; Harfman Todorovic, Maja

    2014-09-09

    A distributed photovoltaic (PV) power plant includes a plurality of distributed dc-dc converters. The dc-dc converters are configured to switch in coordination with one another such that at least one dc-dc converter transfers power to a common dc-bus based upon the total system power available from one or more corresponding strings of PV modules. Due to the coordinated switching of the dc-dc converters, each dc-dc converter transferring power to the common dc-bus continues to operate within its optimal efficiency range as well as to optimize the maximum power point tracking in order to increase the energy yield of the PV power plant.

  16. DC to DC power converters and methods of controlling the same

    SciTech Connect (OSTI)

    Steigerwald, Robert Louis; Elasser, Ahmed; Sabate, Juan Antonio; Todorovic, Maja Harfman; Agamy, Mohammed

    2012-12-11

    A power generation system configured to provide direct current (DC) power to a DC link is described. The system includes a first power generation unit configured to output DC power. The system also includes a first DC to DC converter comprising an input section and an output section. The output section of the first DC to DC converter is coupled in series with the first power generation unit. The first DC to DC converter is configured to process a first portion of the DC power output by the first power generation unit and to provide an unprocessed second portion of the DC power output of the first power generation unit to the output section.

  17. Catalog of DC Appliances and Power Systems

    E-Print Network [OSTI]

    Garbesi, Karina

    2012-01-01

    5V DC USB power from wall sockets. .. 52 viprovides 5V DC USB power from wall sockets. Reproduced withPower over Ethernet 51 Universal Serial Bus Wall

  18. Catalog of DC Appliances and Power Systems

    E-Print Network [OSTI]

    Garbesi, Karina

    2012-01-01

    main conclusions about off-grid markets for DC appliances,and power systems. Mature Off-Grid Markets for DC Appliancesapplications include off-grid residential, telecom, remote

  19. Catalog of DC Appliances and Power Systems

    E-Print Network [OSTI]

    Garbesi, Karina

    2012-01-01

    AEE Solar. 2010 Renewable Energy Design Guide and Catalog.2009, 2010, Interstate Renewable Energy Council. RetrievedDC) generated by on-site renewable energy systems in its DC

  20. Occupant Emergency Plans | Department of Energy

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

    documents for the Department of Energy, Headquarters buildings, in the Washington, DC, metropolitan area. Emergency Procedures Pamphlets Building Evacuation Routes Occupant...

  1. Las Cruces MPO 2040 Metropolitan Transportation Plan 

    E-Print Network [OSTI]

    Las Cruces Metropolitan Planning Organization

    2010-06-09

    /or regionally significant transportation projects determined by the Policy Committee. The list of projects is created in cooperation with residents, local governments, and the New Mexico Department of Transportation (NMDOT). The TIP must be in compliance... short and long-term strategies for maintaining and enhancing the area's transportation system and ? Develop implementation strategies and performance measures that will help achieve the desired results. TRANSPORT 2040 7 ?Y Existing...

  2. Ecological benefits of dc power transmission

    SciTech Connect (OSTI)

    Kutuzova, N. B.

    2011-05-15

    The environmental effects of dc overhead transmission lines are examined. The major effects of ac and dc transmission lines are compared. Dc lines have advantages compared to ac lines in terms of electrical safety for people under the lines, biological effects, corona losses, and clearance width.

  3. Analysis and Optimization of Switched-Capacitor DC-DC Converters

    E-Print Network [OSTI]

    Sanders, Seth

    on conduction loss) of a ladder-type converter is found to be superior to that of a conventional boost converterAnalysis and Optimization of Switched-Capacitor DC-DC Converters Michael D. Seeman, Seth R. Sanders­ Analysis methods are developed that fully determine a switched-capacitor (SC) dc-dc converter's steady

  4. QER Public Meeting in Washington, DC: Enhancing Energy Infrastructure...

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

    Washington, DC: Enhancing Energy Infrastructure Resiliency and Addressing Vulnerabilities QER Public Meeting in Washington, DC: Enhancing Energy Infrastructure Resiliency and...

  5. Car Based Transport and Transit Oriented Metropolitan —— Chinese Urban Motorization Pathways

    E-Print Network [OSTI]

    Ximing, Lu

    2008-01-01

    Car Based Transport and Transit Oriented Metropolitan ——the automobile, the result is that car ownership has becomeof American families lack cars. In China, however, large

  6. Graphite electrode DC arc furnace. Innovative technology summary report

    SciTech Connect (OSTI)

    1999-05-01

    The Graphite Electrode DC Arc Furnace (DC Arc) is a high-temperature thermal process, which has been adapted from a commercial technology, for the treatment of mixed waste. A DC Arc Furnace heats waste to a temperature such that the waste is converted into a molten form that cools into a stable glassy and/or crystalline waste form. Hazardous organics are destroyed through combustion or pyrolysis during the process and the majority of the hazardous metals and radioactive components are incorporated in the molten phase. The DC Arc Furnace chamber temperature is approximately 593--704 C and melt temperatures are as high as 1,500 C. The DC Arc system has an air pollution control system (APCS) to remove particulate and volatiles from the offgas. The advantage of the DC Arc is that it is a single, high-temperature thermal process that minimizes the need for multiple treatment systems and for extensive sorting/segregating of large volumes of waste. The DC Arc has the potential to treat a wide range of wastes, minimize the need for sorting, reduce the final waste volumes, produce a leach resistant waste form, and destroy organic contaminants. Although the DC arc plasma furnace exhibits great promise for treating the types of mixed waste that are commonly present at many DOE sites, several data and technology deficiencies were identified by the Mixed Waste Focus Area (MWFA) regarding this thermal waste processing technique. The technology deficiencies that have been addressed by the current studies include: establishing the partitioning behavior of radionuclides, surrogates, and hazardous metals among the product streams (metal, slag, and offgas) as a function of operating parameters, including melt temperature, plenum atmosphere, organic loading, chloride concentration, and particle size; demonstrating the efficacy of waste product removal systems for slag and metal phases; determining component durability through test runs of extended duration, evaluating the effect of feed composition variations on process operating conditions and slag product performance; and collecting mass balance and operating data to support equipment and instrument design.

  7. USCOMM-WB-DC PRELIMZNARY REPORT OH HURRICANE DAISY

    E-Print Network [OSTI]

    QC 945.2 .D3 H8 1958 c.2 #12;#12;USCOMM-WB-DC #12;PRELIMZNARY REPORT OH HURRICANE DAISY AWGUST 24-29, 1958 Hurricane "Daisy", intense but small in area, was detected as a tropical storm about 300 miles into a hurricane on August 25. A u g u s t 27 it drifted very slowly northward. coast increased. the Atlantic off

  8. Debris flows from small catchments of the Ma Ha Tuak Range, metropolitan Phoenix, Arizona

    E-Print Network [OSTI]

    Dorn, Ron

    Debris flows from small catchments of the Ma Ha Tuak Range, metropolitan Phoenix, Arizona Ronald I from tiny but steep mountain catchments throughout metropolitan Phoenix, Arizona, USA. Urban growth downtown Phoenix, was selected to determine the feasibility of using the varnish microlaminations (VML

  9. Catalog of DC Appliances and Power Systems

    E-Print Network [OSTI]

    Garbesi, Karina

    2012-01-01

    mainly fluorescent and LED lighting and DC ceiling fans. TheFluorescent, CFL Lighting systems: LED Fluorescent and CFLlamps CFL lamps LED lamp CFL floodlight Lighting systems:

  10. Simultaneous distribution of AC and DC power

    DOE Patents [OSTI]

    Polese, Luigi Gentile

    2015-09-15

    A system and method for the transport and distribution of both AC (alternating current) power and DC (direct current) power over wiring infrastructure normally used for distributing AC power only, for example, residential and/or commercial buildings' electrical wires is disclosed and taught. The system and method permits the combining of AC and DC power sources and the simultaneous distribution of the resulting power over the same wiring. At the utilization site a complementary device permits the separation of the DC power from the AC power and their reconstruction, for use in conventional AC-only and DC-only devices.

  11. Catalog of DC Appliances and Power Systems

    E-Print Network [OSTI]

    Garbesi, Karina

    2012-01-01

    sited renewable energy market for the foreseeable future. Inup renewable energy systems increases in the future, chargerenewable energy sources [5]. If direct-DC has a future in

  12. Catalog of DC Appliances and Power Systems

    E-Print Network [OSTI]

    Garbesi, Karina

    2012-01-01

    similarly to an uninterruptible power supply. Lifetime:utility coupled with uninterruptible power requirements forloads serviced by DC uninterruptible power supplies in data

  13. SSL Demonstration: Parking Garage Lighting, Washington, DC

    SciTech Connect (OSTI)

    2013-06-01

    GATEWAY program report brief summarizing an SSL parking garage demonstration at the Dept. of Labor headquarters parking garage in Washington, DC.

  14. Reliability Assessment of Fault-Tolerant Dc-Dc Converters for Photovoltaic Applications

    E-Print Network [OSTI]

    Liberzon, Daniel

    Reliability Assessment of Fault-Tolerant Dc-Dc Converters for Photovoltaic Applications Sairaj V in photovoltaic energy processing applications is presented. The proposed approach acknowledges the influence through several case studies. Index Terms-- Markov reliability modeling, photovoltaic systems, power

  15. Design of a very high frequency resonant boost DC-DC converter

    E-Print Network [OSTI]

    Burkhart, Justin (Justin Michael)

    2010-01-01

    THIS thesis explores the development of a very high frequency DC-DC resonant boost converter. The topology examined features low parts count and fast transient response but suffers from higher device stresses compared to ...

  16. Design and evaluation of a very high frequency dc/dc converter

    E-Print Network [OSTI]

    Pilawa-Podgurski, Robert C. N

    2007-01-01

    This thesis presents a resonant boost topology suitable for very high frequency (VHF, 30-300 MHz) dc-dc power conversion. The proposed design is a fixed frequency, fixed duty ratio resonant converter featuring low device ...

  17. Design and characterization of a radio-frequency dc/dc power converter

    E-Print Network [OSTI]

    Jackson, David A. (David Alexander)

    2005-01-01

    The use of radio-frequency (RF) amplifier topologies in dc/dc power converters allows the operating frequency to be increased by more than two orders of magnitude over the frequency of conventional converters. This enables ...

  18. Radio frequency dc-dc converters : device characterization, topology evaluation, and design

    E-Print Network [OSTI]

    Leitermann, Olivia

    2008-01-01

    High frequency power conversion is attractive for the opportunities it affords for improved performance. Dc-dc converters operating at high frequencies use smaller-valued energy storage elements, which tend to be physically ...

  19. Design and analysis of multiphase DC-DC converters with coupled inductors 

    E-Print Network [OSTI]

    Shi, Meng

    2007-09-17

    , directly coupled inductors have the benefit of low sensitivity to input variation at high frequencies. In addition, the proposed new structure for multiphase DC-DC converters has excellent current sharing performance and reduced current ripple. Computer...

  20. Computer-aided optimization of DC/DC converters for automotive applications

    E-Print Network [OSTI]

    Neugebauer, Timothy C.

    This paper investigates computer-aided optimization of DC/DC converters, with a focus on converters for dual-voltage automotive electrical systems. A new CAD optimization approach based on Monte Carlo search methods is ...

  1. The capacitively coupled converter (C³) for high power DC-DC conversion 

    E-Print Network [OSTI]

    Khan, Shahriar

    1992-01-01

    THE CAPACITIVELY COUPLED CONVERTER (C3) FOR HIGH POWER DC-DC CONVERSION A Thesis by SHAHRIAR KHAN 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 1992 Major Subject: Electrical Engineering THE CAPACITIVELY COUPLED CONVERTER (Cs) FOR HIGH POWER DC-DC CONVERSION A Thesis by SHAHRIAR KHAN Approved as to style and content by: Mehrdad Ehsani (Chair of Committee) Prasad Enjeti...

  2. DC Resistivity Survey (Schlumberger Array) At Coso Geothermal Area (1977) |

    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 J APPENDIX ECoopButtePower VenturesInformation9) Wind Farm JumpAlum|CycloneOpen Energy

  3. Design and development of a DC-DC converter for a fuel cell inverter system 

    E-Print Network [OSTI]

    Gopinath, Rajesh

    2001-01-01

    (FEC)' organized by the Department of Energy and IEEE in August 2001. An efficient 3-terminal DC-DC push-pull topology was adopted to meet the performance and stringent cost constraints. A broad overview of the DC-AC inverter and its control is also...

  4. High Voltage DC Transmission 2 1.0 Introduction

    E-Print Network [OSTI]

    McCalley, James D.

    1 High Voltage DC Transmission 2 1.0 Introduction Interconnecting HVDC within an AC system requires conversion from AC to DC and inversion from DC to AC. We refer to the circuits which provide conversion from AC to DC as rectifiers and the circuits which provide conversion from DC to AC as inverters. The term

  5. High voltage DC power supply

    DOE Patents [OSTI]

    Droege, Thomas F. (Batavia, IL)

    1989-01-01

    A high voltage DC power supply having a first series resistor at the output for limiting current in the event of a short-circuited output, a second series resistor for sensing the magnitude of output current, and a voltage divider circuit for providing a source of feedback voltage for use in voltage regulation is disclosed. The voltage divider circuit is coupled to the second series resistor so as to compensate the feedback voltage for a voltage drop across the first series resistor. The power supply also includes a pulse-width modulated control circuit, having dual clock signals, which is responsive to both the feedback voltage and a command voltage, and also includes voltage and current measuring circuits responsive to the feedback voltage and the voltage developed across the second series resistor respectively.

  6. High voltage DC power supply

    DOE Patents [OSTI]

    Droege, T.F.

    1989-12-19

    A high voltage DC power supply having a first series resistor at the output for limiting current in the event of a short-circuited output, a second series resistor for sensing the magnitude of output current, and a voltage divider circuit for providing a source of feedback voltage for use in voltage regulation is disclosed. The voltage divider circuit is coupled to the second series resistor so as to compensate the feedback voltage for a voltage drop across the first series resistor. The power supply also includes a pulse-width modulated control circuit, having dual clock signals, which is responsive to both the feedback voltage and a command voltage, and also includes voltage and current measuring circuits responsive to the feedback voltage and the voltage developed across the second series resistor respectively. 7 figs.

  7. DC-based magnetic field controller

    DOE Patents [OSTI]

    Kotter, Dale K. (Shelley, ID); Rankin, Richard A. (Ammon, ID); Morgan, John P,. (Idaho Falls, ID)

    1994-01-01

    A magnetic field controller for laboratory devices and in particular to dc operated magnetic field controllers for mass spectrometers, comprising a dc power supply in combination with improvements to a hall probe subsystem, display subsystem, preamplifier, field control subsystem, and an output stage.

  8. Areas Participating in the Oxygenated Gasoline Program (Released in the STEO July 1999)

    Reports and Publications (EIA)

    1999-01-01

    Section 211(m) of the Clean Air Act (42 U.S.C. 7401-7671q) requires that gasoline containing at least 2.7% oxygen by weight is to be used in the wintertime in those areas of the county that exceed the carbon monoxide National Ambient Air Quality Standards (NAAQS). The winter oxygenated gasoline program applies to all gasoline sold in the larger of the Consolidated Metropolitan Statistical Area (CMSA) or Metropolitan Statistical Area (MSA) in which the nonattainment area is located.

  9. Alcohol Outlets and Violent Crime in Washington D.C.

    E-Print Network [OSTI]

    Franklin, F. Abron; LaVeist, Thomas A.; Webster, Daniel W.; Pan, William K.

    2010-01-01

    of Violence and Disorder. Washington, D.C. : The Urbanand Violent Crime in Washington D.C. F. Abron Franklin II,Involvement in Crime. Washington, D.C. : U.S. Department of

  10. Efficient detection of contagious outbreaks in massive metropolitan encounter networks

    E-Print Network [OSTI]

    Sun, Lijun; Lee, Der-Horng; Cebrian, Manuel

    2014-01-01

    Physical contact remains difficult to trace in large metropolitan networks, though it is a key vehicle for the transmission of contagious outbreaks. Co-presence encounters during daily transit use provide us with a city-scale time-resolved physical contact network, consisting of 1 billion contacts among 3 million transit users. Here, we study the advantage that knowledge of such co-presence structures may provide for early detection of contagious outbreaks. We first examine the "friend sensor" scheme --- a simple, but universal strategy requiring only local information --- and demonstrate that it provides significant early detection of simulated outbreaks. Taking advantage of the full network structure, we then identify advanced "global sensor sets", obtaining substantial early warning times savings over the friends sensor scheme. Individuals with highest number of encounters are the most efficient sensors, with performance comparable to individuals with the highest travel frequency, exploratory behavior and ...

  11. EA-351 DC Energy Dakota, LLC | Department of Energy

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

    Dakota, LLC Order authorizing DC Energy Dakota, LLC to export electric energy to Canada EA-351 DC Energy Dakota, LLC More Documents & Publications Application to Export...

  12. INL Efficiency and Security Testing of EVSE, DC Fast Chargers...

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

    and Security Testing of EVSE, DC Fast Chargers, and Wireless Charging Systems INL Efficiency and Security Testing of EVSE, DC Fast Chargers, and Wireless Charging Systems...

  13. Report Now Available: DC Microgrids Scoping Study--Estimate of...

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

    Report Now Available: DC Microgrids Scoping Study--Estimate of Technical and Economic Benefits (March 2015) Report Now Available: DC Microgrids Scoping Study--Estimate of Technical...

  14. Energy Department Completes Cool Roof Installation on DC Headquarters...

    Energy Savers [EERE]

    Energy Department Completes Cool Roof Installation on DC Headquarters Building to Save Money by Saving Energy Energy Department Completes Cool Roof Installation on DC Headquarters...

  15. AVTA: Battery Testing - DC Fast Charging's Effects on PEV Batteries...

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

    Battery Testing - DC Fast Charging's Effects on PEV Batteries AVTA: Battery Testing - DC Fast Charging's Effects on PEV Batteries The Vehicle Technologies Office's Advanced Vehicle...

  16. AVTA: Hasdec DC Fast Charging Testing Results | Department of...

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

    Hasdec DC Fast Charging Testing Results AVTA: Hasdec DC Fast Charging Testing Results The Vehicle Technologies Office's Advanced Vehicle Testing Activity carries out testing on a...

  17. Low Cost, High Temperature, High Ripple Current DC Bus Capacitors...

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

    Low Cost, High Temperature, High Ripple Current DC Bus Capacitors Low Cost, High Temperature, High Ripple Current DC Bus Capacitors 2010 DOE Vehicle Technologies and Hydrogen...

  18. NOISE AND OPTIMIZATION OF THE dc SQUID

    E-Print Network [OSTI]

    Tesche, Claudia Denke

    2011-01-01

    unpublished). A. Van der Ziel, Noise (Prentice-Hall, Inc. ,MAY 29 19ft LBL-8510 MASTER NOISE AND OPTIMIZATION OF THE deW-7405-ENG-48 LBL-8510 NOISE AND OPTIMIZATION OF THE dc

  19. Catalog of DC Appliances and Power Systems

    E-Print Network [OSTI]

    Garbesi, Karina

    2012-01-01

    DC/AC-Hybrid) LED AC LED Power (W) Figure 8. Efficacywith the same power consumption. For LEDs, the improvementLED light-emitting diode viii lumen a measure of the power

  20. DC High School Science Bowl Regionals

    Broader source: Energy.gov [DOE]

    This event is the Washington, D.C. High School Regional competition for the US National Science Bowl. The regional competition is run by the Office of Economic Impact and Diversity, and the...

  1. Catalog of DC Appliances and Power Systems

    E-Print Network [OSTI]

    Garbesi, Karina

    2012-01-01

    direct-DC. The timing of EV charging relative to PV outputadded a hypothetical EV charging load. The EV load could bewith building loads. EV charging standards [26, 27

  2. Catalog of DC Appliances and Power Systems

    E-Print Network [OSTI]

    Garbesi, Karina

    2012-01-01

    Ovens Electric Heat Pumps Geothermal Heat Pumps Solar WaterOvens Appliance DC-internal product power (Watts) Personal Computers and Related Equipment Rechargeable Electronics Refrigerators Room Air Conditioners Security Systems Solar

  3. Catalog of DC Appliances and Power Systems

    E-Print Network [OSTI]

    Garbesi, Karina

    2012-01-01

    produce a DC-compatible dishwasher that uses 51% less energyCooking Equipments Dishwashers Lighting Electric Other Waterby end-Use ( TWh) Dishwashers DVDs/VCRs DVDs/VCRs Freezers

  4. Pedestrian Areas in Los Angeles: Influence of design features and market area on pedestrian activity. A case study of three commercial strips

    E-Print Network [OSTI]

    Soto, Manuel Antonio

    2012-01-01

    David and Ragan, Leslie (1991) Pedestrian and Street LifeOther Considerations for Pedestrian Malls. Washington D.C. ,is a compactly developed pedestrian area characterized by

  5. American Institute of Aeronautics and Astronautics Active System Identification of a DC-DC Converter Using

    E-Print Network [OSTI]

    American Institute of Aeronautics and Astronautics 1 Active System Identification of a DC and Computer Engineering, UCB 425. #12;American Institute of Aeronautics and Astronautics 2 analysis10

  6. Analysis of The Housing Market in the Metropolitan Areas in the United States 

    E-Print Network [OSTI]

    Li, Yarui

    2013-12-04

    The housing market plays a significant role in shaping the economic and social well-being of U.S. households. It helps spur U.S. economic growth when house prices rise, and drags the economic growth when house prices drop. In this dissertation...

  7. An Analysis of the Impacts of British Transport Reforms on Transit Integration in the Metropolitan Areas

    E-Print Network [OSTI]

    Rivasplata, Charles Richard

    2006-01-01

    British Transport Commission (BTC), 1963. The Reshaping ofroutes throughout Britain (BTC 1963), it had little direct

  8. Modeling the Dynamics of Desakota Regions: Global - Local Nexus in the Taipei Metropolitan Area 

    E-Print Network [OSTI]

    Wu, Bing-Sheng

    2010-10-12

    in 1991, focuses on how internal domestic and local forces drive the specific rural-urban transformation in Asia. However, the McGee-Ginsburg model does not emphasize the importance of globalization on Asian urbanization. To fill the gap, this study...

  9. An Analysis of the Impacts of British Transport Reforms on Transit Integration in the Metropolitan Areas

    E-Print Network [OSTI]

    Rivasplata, Charles Richard

    2006-01-01

    Transport Policy and Sustainable Mobility, London: Spon.sustainable environment. It is through the development of a comprehensive set of mobility

  10. Chemical evolution of volatile organic compounds in the outflow of the Mexico City Metropolitan area

    E-Print Network [OSTI]

    2010-01-01

    MEX 1 . Compound C-130 T0 T1 G1 Ethane Propane i-Butanen-Butane i-Pentane n-Pentane n-Hexane n-Heptane n-OctaneEthyne Propane Propene i-Butane n-Butane 1-Butene + i-Butene

  11. Real-time Air Quality Monitoring Through Mobile Sensing in Metropolitan Areas

    E-Print Network [OSTI]

    Iftode, Liviu

    . General Terms Measurement, Design, Experimentation, Human Factors. Keywords Air Quality, Pollution, Urban levels in the urban and suburban settings. According to the US EPA [3], the six common air pollutants. These are called the criteria pollutants and thus are required to be measured to tell us how healthy the air

  12. Chemical evolution of volatile organic compounds in the outflow of the Mexico City Metropolitan area

    E-Print Network [OSTI]

    2010-01-01

    Butene cis-2-Butene 1,3-Butadiene 1-Pentene trans-2-Pentenei-Pentane n-Pentane 1,3-Butadiene 1-Pentene Isoprene trans-i-Pentane n-Pentane 1,3-Butadiene 1-Pentene Isoprene trans-

  13. An Analysis of the Impacts of British Transport Reforms on Transit Integration in the Metropolitan Areas

    E-Print Network [OSTI]

    Rivasplata, Charles Richard

    2006-01-01

    dares – the London experience, Transportation Planning anddecisions, Transportation 27: 243-267. London Transport (transportation, Mass Transit (November). Transport for London (

  14. Technology and policy options for reducing industrial air pollutants in the Mexico City Metropolitan Area

    E-Print Network [OSTI]

    Vijay, Samudra, 1968-

    2005-01-01

    Technology plays an important role in dealing with air pollution and other environmental problems faced by developing and developed societies. This research examines if technological solutions alone, such as end-of-pipe ...

  15. Mobility 2030: The Metropolitan Transportation Plan for the Dallas-Fort Worth Area 2009 Amendment 

    E-Print Network [OSTI]

    North Central Texas Council of Governments

    2009-04-09

    are consistent with state and regional air quality improvement goals. Infrastructure Mainten. Management & Operations (ITS, TSM,TDM, Bike/Ped) Rail & Bus HOV/Managed Lanes Freeway/Tollway & Arterial Mobility Plan = Intermodal Planning Efforts System..., Paratransit Capital $1.5 Regional Arterial System $3.4 Other Arterials $2.9 Freeway, Tollway, HOV, Managed System $32.8 *Costs are adjusted for ?total project cost? and ?year of expenditure? consistent with SAFETEA-LU planning requirements. ?Actual...

  16. Chemical evolution of volatile organic compounds in the outflow of the Mexico City Metropolitan area

    E-Print Network [OSTI]

    2010-01-01

    methanol, ethanol, formaldehyde, acetaldehyde), while higher VOCs are represented as a lumped alkane (BIGANE), lumped alkene (BIGENE) and lumped aromatic (

  17. Chemical evolution of volatile organic compounds in the outflow of the Mexico City Metropolitan area

    E-Print Network [OSTI]

    2010-01-01

    C-130 T0 T1 G1 Ethane Propane i-Butane n-Butane i-Pentane n-ppbv) Ethane Ethene Ethyne Propane Propene i-Butane n-Butanee.g. , ethane, ethene, propane, propane, methanol, ethanol,

  18. An Analysis of the Impacts of British Transport Reforms on Transit Integration in the Metropolitan Areas

    E-Print Network [OSTI]

    Rivasplata, Charles Richard

    2006-01-01

    contrast to many other cities with the smart card system ofthe three case cities. Fare integration: transit smart cardsonly city in the country to have introduced a transit smart

  19. A DESCRIPTIVE STUDY OF PUBLIC HIGH SCHOOL FRESHMEN TRANSITION PROGRAMS IN THE KANSAS CITY METROPOLITAN AREA

    E-Print Network [OSTI]

    Biermann, Brian Richard

    2010-07-05

    Transitioning into high school can be exciting but also challenging for some students. To combat some of the common pitfalls incoming freshmen face, schools are developing freshmen induction programs. This research was a descriptive study of twenty...

  20. Chemical evolution of volatile organic compounds in the outflow of the Mexico City Metropolitan area

    E-Print Network [OSTI]

    2010-01-01

    results in bar graphs and pie charts. The bar graphs show03:00 p.m. Shown in the first pie chart to the right of eachof each bar graph is a pie chart showing the breakdown of

  1. Formation of semivolatile inorganic aerosols in the Mexico City Metropolitan Area during the MILAGRO campaign

    E-Print Network [OSTI]

    Karydis, V. A.

    One of the most challenging tasks for chemical transport models (CTMs) is the prediction of the formation and partitioning of the major semi-volatile inorganic aerosol components (nitrate, chloride, ammonium) between the ...

  2. A comparative study of ozone production in five U.S. metropolitan areas

    E-Print Network [OSTI]

    ) are calculated using observed concentrations as inputs to a steady state box model. City to city comparisons are made to illustrate common features of urban photochemistry and features that are unique to specific. These conditions are infrequent, and aside from a common dependence on calm winds, reasons vary from city to city

  3. Emission Testing of Washington Metropolitan Area Transit Authority (WMATA) Natural Gas and Diesel Transit Buses

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (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 Delicious Rank EERE: Alternative Fuels Data Center Home PageBlender PumpVehiclesThe Heat Is onis3INTRODUCTIONEmission

  4. Washington Metropolitan Area Transit Authority: Biodiesel Fuel Comparison Final Data Report

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (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 Delicious Rank EERE: Alternative Fuels Data Center Home PageBlender PumpVehiclesThe HeatClean Cities

  5. Improved DC Gun Insulator Assembly

    SciTech Connect (OSTI)

    Sah, R.; Dudas, A.; Neubauer, M. L.; Poelker, M.; Surles-Law, K. E.L.

    2010-05-23

    Many user fa­cil­i­ties such as syn­chrotron ra­di­a­tion light sources and free elec­tron lasers re­quire ac­cel­er­at­ing struc­tures that sup­port elec­tric fields of 10-100 MV/m, es­pe­cial­ly at the start of the ac­cel­er­a­tor chain where ce­ram­ic in­su­la­tors are used for very high gra­di­ent DC guns. These in­su­la­tors are dif­fi­cult to man­u­fac­ture, re­quire long com­mis­sion­ing times, and often ex­hib­it poor re­li­a­bil­i­ty. Two tech­ni­cal ap­proach­es to solv­ing this prob­lem will be in­ves­ti­gat­ed. First­ly, in­vert­ed ce­ram­ics offer so­lu­tions for re­duced gra­di­ents be­tween the elec­trodes and ground. An in­vert­ed de­sign will be pre­sent­ed for 350 kV, with max­i­mum gra­di­ents in the range of 5-10 MV/m. Sec­ond­ly, novel ce­ram­ic man­u­fac­tur­ing pro­cess­es will be stud­ied, in order to pro­tect triple junc­tion lo­ca­tions from emis­sion, by ap­ply­ing a coat­ing with a bulk re­sis­tiv­i­ty. The pro­cess­es for cre­at­ing this coat­ing will be op­ti­mized to pro­vide pro­tec­tion as well as be used to coat a ce­ram­ic with an ap­pro­pri­ate gra­di­ent in bulk re­sis­tiv­i­ty from the vac­u­um side to the air side of an HV stand­off ce­ram­ic cylin­der. Ex­am­ple in­su­la­tor de­signs are being com­put­er mod­elled, and in­su­la­tor sam­ples are being man­u­fac­tured and test­ed

  6. A DC-DC Converter-Based PEM Fuel Cell System Emulator

    E-Print Network [OSTI]

    Boyer, Edmond

    A DC-DC Converter-Based PEM Fuel Cell System Emulator Daoud Rezzak, Farid Khoucha, Mohamed Benbouzid, Abdelaziz Kheloui and Abdeslam Mamoune Abstract--The Proton Exchange Membrane Fuel Cell (PEMFC power supplies. Fuel cell systems are characterized by high costs and complex auxiliary devices

  7. DC's Marble ceiling : urban height and its regulation in Washington, DC

    E-Print Network [OSTI]

    Trueblood, Andrew Tyson

    2009-01-01

    Washington, DC has a unique urban form that is the result of a century-old law. Through the narrow lens of DC's height limit, I survey a range of topics related to urban height, starting with a review of its history of ...

  8. Method to Improve Total Dose Radiation Hardness in a CMOS dc-dc Boost

    E-Print Network [OSTI]

    Wilamowski, Bogdan Maciej

    Method to Improve Total Dose Radiation Hardness in a CMOS dc-dc Boost Converter Huadian Pan in a wide range of radiation environment, with increasing total dose radiation, The efticieney also greatly for low-power applications (1],[2]. It is known that radiation has many effects on MOSFETs

  9. Development of a 55 kW 3X DC-DC Converter for HEV Systems

    E-Print Network [OSTI]

    Tolbert, Leon M.

    efficiency provide the great potential for the very high temperature operation. The circuit parameter design converter and a traction motor to drive the vehicle. In most commercial HEV systems, the power converter, 37996 Abstract--The design of a 55 kW 3X dc-dc converter is presented for hybrid electric vehicle (HEV

  10. Time domain design of digital compensators for PWM DC-DC converters

    E-Print Network [OSTI]

    transformation and discretization. Digital PID controllers for a Buck and Boost type converters were implemented (via the various transformation algorithms), a digital compensator operates, in reality, in the sampledTime domain design of digital compensators for PWM DC-DC converters Mor Mordechai Peretz and Sam

  11. 5 kW Multilevel DC-DC Converter for Hybrid Electric and Fuel Cell Automotive

    E-Print Network [OSTI]

    Tolbert, Leon M.

    5 kW Multilevel DC-DC Converter for Hybrid Electric and Fuel Cell Automotive Applications Faisal H) for future hybrid electric vehicle and fuel cell automotive applications will be presented in this paper will impact if the 42V/14V dual bus system will be a successful and cost effective solution for future

  12. Aalborg Universitet Optimization with System Damping Restoration for Droop Controlled DC-DC

    E-Print Network [OSTI]

    Vasquez, Juan Carlos

    --The parallel operation of dc-dc converters is widely used in distribution systems and uninterruptable power supply systems. Droop control along with virtual resistance (VR) is considered a simple and reliable method for achieving wireless power sharing among converters. In order to enhance the efficiency

  13. DC WRRC Report No. 44 THE D.C. WATER RESOURCES RESEARCH CENTER

    E-Print Network [OSTI]

    District of Columbia, University of the

    . The agreements will reduce the possibility of water shortages during low flows or pollution crisis and insure for new expanded treatment facilities. Finally, the recently completed Rock Creek water shed study has#12;DC WRRC Report No. 44 THE D.C. WATER RESOURCES RESEARCH CENTER THE UNIVERSITY OF THE DISTRICT

  14. Climate Action Champions: Metropolitan Washington Council of Governments,

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

    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 GasAdjustmentsShirleyEnergy A plug-in electric vehicle (PEV) chargingWASHINGTON, DCThe City of Dubuque,DC, MD,

  15. Homopolar dc motor and trapped flux brushless dc motor using high temperature superconductor materials

    SciTech Connect (OSTI)

    Crapo, A.D.; Lloyd, J.D. (Emerson Electric Co., St. Louis, MO (US))

    1991-03-01

    This paper reports on two motors designed and built for use with high temperature superconductor (HTSC) materials. They are a homopolar DC motor that will use HTSC field windings and a brushless DC motor that will use bulk HTSC material to trap flux in steel rotor poles. The HTSC field windings of the homopolar DC motor are designed to operate at 1000 Amperes/cm{sup 2} in a 0.010 Tesla (100 Gauss) field. In order to maximize torque in the homopolar DC motor, an iron magnetic circuit with small air gaps gives maximum flux for minimum Ampere turns in the field. A copper field winding version of the homopolar DC motor has been tested while the authors wait for 575 Ampere turn HTSC coils.

  16. An Exploration of the Perceptions and Utilizations of Networking Systems in Washington, D.C.

    E-Print Network [OSTI]

    Lindsey, Robynne

    2013-01-01

    Personal Interview. Washington, D.C. , July 25, 2013.Personal Interview. Washington, D.C. , August 12, 2013.Personal Interview. Washington, D.C. , July 17, 2013. 12

  17. FEDERAL COMMUNICATIONS COMMISSION Washington, DC 20554

    E-Print Network [OSTI]

    Bove Jr., V. Michael

    FCC 96­207 Before the FEDERAL COMMUNICATIONS COMMISSION Washington, DC 20554 In the Matter of a mechanism for a bit stream layer transmission standard (into which, e.g., MPEG­2 could fit) 3) The FCC: number of hours per day of digital television transmission, minimal Quality of Service specifications

  18. Halbach array DC motor/generator

    DOE Patents [OSTI]

    Merritt, Bernard T. (Livermore, CA); Dreifuerst, Gary R. (Livermore, CA); Post, Richard F. (Walnut Creek, CA)

    1998-01-01

    A new configuration of DC motor/generator is based on a Halbach array of permanent magnets. This motor does not use ferrous materials so that the only losses are winding losses and losses due to bearings and windage. An "inside-out" design is used as compared to a conventional motor/generator design. The rotating portion, i.e., the rotor, is on the outside of the machine. The stationary portion, i.e., the stator, is formed by the inside of the machine. The rotor contains an array of permanent magnets that provide a uniform field. The windings of the motor are placed in or on the stator. The stator windings are then "switched" or "commutated" to provide a DC motor/generator much the same as in a conventional DC motor. The commutation can be performed by mechanical means using brushes or by electronic means using switching circuits. The invention is useful in electric vehicles and adjustable speed DC drives.

  19. Halbach array DC motor/generator

    DOE Patents [OSTI]

    Merritt, B.T.; Dreifuerst, G.R.; Post, R.F.

    1998-01-06

    A new configuration of DC motor/generator is based on a Halbach array of permanent magnets. This motor does not use ferrous materials so that the only losses are winding losses and losses due to bearings and windage. An ``inside-out`` design is used as compared to a conventional motor/generator design. The rotating portion, i.e., the rotor, is on the outside of the machine. The stationary portion, i.e., the stator, is formed by the inside of the machine. The rotor contains an array of permanent magnets that provide a uniform field. The windings of the motor are placed in or on the stator. The stator windings are then ``switched`` or ``commutated`` to provide a DC motor/generator much the same as in a conventional DC motor. The commutation can be performed by mechanical means using brushes or by electronic means using switching circuits. The invention is useful in electric vehicles and adjustable speed DC drives. 17 figs.

  20. SUBCONTRACT REPORT: DC-DC Converter for Fuel Cell and Hybrid Vehicles

    SciTech Connect (OSTI)

    Marlino, Laura D; Zhu, Lizhi

    2007-07-01

    The goal of this project is to develop and fabricate a 5kW dc-dc converter with a baseline 14V output capability for fuel cell and hybrid vehicles. The major objectives for this dc-dc converter technology are to meet: Higher efficiency (92%); High coolant temperature,e capability (105 C); High reliability (15 Years/150,000miles); Smaller volume (5L); Lower weight (6kg); and Lower cost ($75/kW). The key technical challenge for these converters is the 105 C coolant temperatures. The power switches and magnetics must be designed to sustain these operating temperatures reliably, without a large cost/mass/volume penalty.

  1. D.C. Water Resources Research Center Annual Technical Report

    E-Print Network [OSTI]

    - DC Water and Sewer Authority (WASA) The Institutes received favorable responses from and met with the following new Advisory Board members: 1- Mr. Richard Gianni, Water Quality Manager, DC Water and Sewer

  2. Decoherence and dephasing errors caused by the dc Stark effect...

    Office of Scientific and Technical Information (OSTI)

    Decoherence and dephasing errors caused by the dc Stark effect in rapid ion transport Citation Details In-Document Search Title: Decoherence and dephasing errors caused by the dc...

  3. DC Microgrids Scoping Study: Estimate of Technical and Economic...

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

    applications where the end-use loads are natively DC, e.g., computers, solid-state lighting, and building networks. These early DC applications may provide higher efficiency,...

  4. Persons Who Received the DC PSC's Emergency Petition and Complaint...

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

    Persons Who Received the DC PSC's Emergency Petition and Complaint via E-mail on August 24, 2005 Persons Who Received the DC PSC's Emergency Petition and Complaint via E-mail on...

  5. Aalborg Universitet Hierarchical Control for Multiple DC-Microgrids Clusters

    E-Print Network [OSTI]

    Vasquez, Juan Carlos

    , and energy storages (e.g., secondary battery and super capacitor) [7]­[15]. Normally, dc MGs are proposed

  6. Energy Training Session for DC Elementary School Teachers

    Broader source: Energy.gov [DOE]

    Are you an elementary school teacher in Washington, DC, looking for creative ideas to introduce energy curriculum to your students?

  7. Urbanisation de DC ANF Datacentres 2 Octobre 2014

    E-Print Network [OSTI]

    van Tiggelen, Bart

    Urbanisation de DC ANF Datacentres ­ 2 Octobre 2014 Cargese Urbanisation des Datacentres Romaric David david@unistra.fr Univerité de Strasbourg 2 Octobre 2014 #12;2 Urbanisation de DC ANF Datacentres constructeurs Conclusion #12;3 Urbanisation de DC ANF Datacentres ­ 2 Octobre 2014 Cargese Introduction Centre

  8. D.C. Water Resources Research Center Annual Technical Report

    E-Print Network [OSTI]

    D.C. Water Resources Research Center Annual Technical Report FY 2007 D.C. Water Resources Research of the District of Columbia (DC) Water Resources Research Institute (the Institute) for the period of March 1 relevant water resources research results and transfer information to assist policy makers and residents

  9. Aalborg Universitet Hierarchical Control for Multiple DC Microgrids Clusters

    E-Print Network [OSTI]

    Vasquez, Juan Carlos

    Aalborg Universitet Hierarchical Control for Multiple DC Microgrids Clusters Shafiee, Qobad). Hierarchical Control for Multiple DC Microgrids Clusters. I E E E Transactions on Energy Conversion, 29(4), 922. Dragicevic, J. C. Vasquez, and J. M. Guerrero, "Hierarchical Control for Multiple DC-Microgrids Clusters

  10. RF MEMS DC CONTACT SWTCHES FOR RECONFIGURABLE Presented to the

    E-Print Network [OSTI]

    Kassegne, Samuel Kinde

    RF MEMS DC CONTACT SWTCHES FOR RECONFIGURABLE ANTENNAS _______________ A Thesis Presented STATE UNIVERSITY The Undersigned Faculty Committee Approves the Thesis of Lei Zhou: RF DC Contact MEMS rock and water, water, through persistence, eventually wins. #12;vi ABSTRACT OF THE THESIS RF MEMS DC

  11. Q&A: Kristen Psaki of WeatherizeDC

    Broader source: Energy.gov [DOE]

    Roughly 20 percent of carbon emissions come from inefficient homes. The DC Project says it has found a way to mitigate emissions and create jobs, a winning combination. WeatherizeDC is the non-profit’s effort to use a community engagement model to help DC residents find green jobs and live a more energy efficient lifestyle.

  12. Energy Challenge Two: The WeatherizeDC Campaign

    Broader source: Energy.gov [DOE]

    WeatherizeDC is a campaign of The DC Project, a nonprofit based in Washington, D.C., founded by former leaders of the Obama for America campaign around a mission to advance economic and environmental justice by creating clean energy career opportunities for people who need them most.

  13. A single-inductor switching DC-DC converter with five outputs and ordered power-distributive control

    E-Print Network [OSTI]

    Le, Hanh-Phuc; Chae, Chang-Seok; Lee, Kwang-Chan; Wang, Se-Won; Cho, Gyu-Ha; Cho, Gyu-Hyeong

    2007-01-01

    integrated current mode boost converter in standard 3.3=5-Vef?ciency CMOS DC-DC boost converter with current sensingdeveloping reset ICs, boost converters for PM OLED, and SIMO

  14. Low Power DC-DC Converters and a Low Quiescent Power High PSRR Class-D Audio Amplifier 

    E-Print Network [OSTI]

    Torres, Joselyn

    2013-12-03

    High-performance DC-DC voltage converters and high-efficient class-D audio amplifiers are required to extend battery life and reduce cost in portable electronics. This dissertation focuses on new system architectures and design techniques...

  15. Design of a step-down DC-DC controller integrated circuit with adaptive dead-time control

    E-Print Network [OSTI]

    Li, Zhipeng, M. Eng. Massachusetts Institute of Technology

    2010-01-01

    A constant-frequency peak current mode synchronous step-down DC-DC controller integrated circuit has been designed with adaptive dead-time control. The adaptive dead-time control circuitry is implemented as digital ...

  16. Computer-Aided Optimization of dc/dc Converters for Automotive Applications Timothy C. Neugebauer David J. Perreault

    E-Print Network [OSTI]

    Perreault, Dave

    Computer-Aided Optimization of dc/dc Converters for Automotive Applications Timothy C. Neugebauer/dc converters, with a focus on converters for dual-voltage automotive electrical systems. A new CAD optimization is the next evolutionary step for automotive electrical systems. High-power loads will be moved to a new high

  17. Do Debris Flows Pose a Hazard to Mountain-Front Property in Metropolitan Phoenix, Arizona?

    E-Print Network [OSTI]

    Dorn, Ron

    Do Debris Flows Pose a Hazard to Mountain-Front Property in Metropolitan Phoenix, Arizona? Ronald I by growing suburbs of metropoli- tan Phoenix, Arizona, including on steep slopes above large single hazard in Phoenix and perhaps other grow- ing cities in the desert Southwest. Key Words: debris flow

  18. Visualizing Diurnal Population Change in Urban Areas for Emergency Management

    SciTech Connect (OSTI)

    Kobayashi, Tetsuo; Medina, Richard M; Cova, Thomas

    2011-01-01

    There is an increasing need for a quick, simple method to represent diurnal population change in metropolitan areas for effective emergency management and risk analysis. Many geographic studies rely on decennial U.S. Census data that assume that urban populations are static in space and time. This has obvious limitations in the context of dynamic geographic problems. The U.S. Department of Transportation publishes population data at the transportation analysis zone level in fifteen-minute increments. This level of spatial and temporal detail allows for improved dynamic population modeling. This article presents a methodology for visualizing and analyzing diurnal population change for metropolitan areas based on this readily available data. Areal interpolation within a geographic information system is used to create twenty-four (one per hour) population surfaces for the larger metropolitan area of Salt Lake County, Utah. The resulting surfaces represent diurnal population change for an average workday and are easily combined to produce an animation that illustrates population dynamics throughout the day. A case study of using the method to visualize population distributions in an emergency management context is provided using two scenarios: a chemical release and a dirty bomb in Salt Lake County. This methodology can be used to address a wide variety of problems in emergency management.

  19. The effectiveness of jobs-housing balance as a strategy for reducing traffic congestion: a study of metropolitan Bangkok 

    E-Print Network [OSTI]

    Lobyaem, Sonchai

    2006-10-30

    Bangkok is widely known for its severe traffic congestion. The Thai government advocates the concept of jobs and housing balance (JHB) as a strategy for reducing traffic congestion in Metropolitan Bangkok. The basic idea is to decentralize the jobs...

  20. Improved DC Gun and Insulator Assembly

    SciTech Connect (OSTI)

    Neubauer, Michael; Johnson, Rolland P

    2015-01-11

    Many user facilities such as synchrotron radiation light sources and free electron lasers rely on DC high voltage photoguns with internal field gradients as high as 10 to 15 MV/m. These high gradients often lead to field emission which poses serious problems for the photocathode used to generate the electron beam and the ceramic insulators used to bias the photocathode at high voltage. Ceramic insulators are difficult to manufacture, require long commissioning times, and have poor reliability, in part because energetic electrons bury themselves in the ceramic causing a buildup of charge and eventual puncture, and also because large diameter ceramics are difficult to braze reliably. The lifetimes of photo cathodes inside high current DC guns exhibiting field emission are limited to less than a hundred hours. Reducing the surface gradients on the metals reduces the field emission, which serves to maintain the required ultrahigh vacuum condition. A novel gun design with gradients around 5 MV/m and operating at 350 kV, a major improvement over existing designs, was proposed that allows for the in-situ replacement of photo cathodes in axially symmetric designs using inverted ceramics. In this project, the existing JLAB CEBAF asymmetric gun design with an inverted ceramic support was modeled and the beam dynamics characterized. An improved structure was designed that reduces the surface gradients and improves the beam optics. To minimize the surface gradients, a number of electrostatic gun designs were studied to determine the optimum configuration of the critical electrodes within the gun structure. Coating experiments were carried out to create a charge dissipative coating for cylindrical ceramics. The phase II proposal, which was not granted, included the design and fabrication of an axially symmetric DC Gun with an inverted ceramic that would operate with less than 5 MV/m at 350 kV and would be designed with an in-situ replaceable photo-cathode.

  1. Quantitative Outgassing studies in DC Electrical breakdown

    E-Print Network [OSTI]

    Levinsen, Yngve Inntjore; Calatroni, Sergio; Taborelli, Mauro; Wünsch, Walter

    2010-01-01

    Breakdown in the accelerating structures sets an important limit to the performance of the CLIC linear collider. Vacuum degradation and subsequent beam instability are possible outcomes of a breakdown if too much gas is released from the cavity surface. Quantitative data of gas released by breakdowns are provided for copper (milled Cu-OFE, as-received and heat-treated), and molybdenum. These data are produced in a DC spark system based on a capacitance charged at fixed energy, and will serve as a reference for the vacuum design of the CLIC accelerating structures.

  2. Dc's blog | OpenEI Community

    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 SECTIONRobertsdale, Alabama (UtilityInstruments Inc JumpIowa:Minnesota:Daylighting JumpDc's blog Home >

  3. DC Survey 2013 | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    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 NaturalDukeWakefield Municipal Gas &SCE-SessionsSouthReport for the t-) S/,,5 'a CConversion |National Laser UserDC

  4. Washington DC | OpenEI Community

    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 J APPENDIX ECoop IncIowa (Utility Company)Idaho)Vossloh Kiepe JumpWarana Group ofDC Home Linked

  5. A Reachability-Based Method for Large-Signal Behavior Verification of DC-DC Converters

    E-Print Network [OSTI]

    Liberzon, Daniel

    -loop, large-signal system behavior verification, and iv) switching detail modeling. In open-loop, large´inguez-Garc´ia, Member, IEEE Abstract--A method for large-signal behavior verification of power electronics DC behavior verification, lengthy time-domain simula- tions are conducted to analyze the system response

  6. Vehicle Technologies Office Merit Review 2014: DC Fast Charging...

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

    Technologies Office Merit Review 2014: DC Fast Charging Effects on Battery Life and EVSE Efficiency and Security Testing Presentation given by Idaho National Laboratory at 2014...

  7. INL Efficiency and Security Testing of EVSE, DC Fast Chargers...

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

    INL Efficiency and Security Testing of EVSE, DC Fast Chargers, and Wireless Charging Systems May 14, 2013 Project ID VSS096 2013 DOE Vehicle Technologies Program Annual Merit...

  8. INL Efficiency and Security Testing of EVSE, DC Fast Chargers...

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

    Testing to support Code & Standards Vehicle Technologies Office Merit Review 2014: DC Fast Charging Effects on Battery Life and EVSE Efficiency and Security Testing Vehicle...

  9. DC Bus Capacitor Manufacturing Facility for Electric Drive Vehicles...

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

    0 DOE Vehicle Technologies and Hydrogen Programs Annual Merit Review and Peer Evaluation Meeting, June 7-11, 2010 -- Washington D.C. apearravt028boan2010...

  10. DC Resistivity Survey (Wenner Array) At Mt Princeton Hot Springs...

    Open Energy Info (EERE)

    2008 - 2010 Usefulness useful DOE-funding Unknown Exploration Basis Determination of groundwater flux patterns Notes Researchers measured DC resistivity and produced 12 resistivity...

  11. DESIGN AND PERFORMANCE OF PEP DC POWER SYSTEMS

    E-Print Network [OSTI]

    Jackson, T.

    2010-01-01

    DC supplies, with no switchgear interposed between the DCthe only transformers and switchgear in the system, and theycost of transformers and switchgear is eliminated from the

  12. The 2005 - 2030 Harlingen-San Benito Metropolitan Transportation Plan 

    E-Print Network [OSTI]

    Harlingen-San Benito Metropolitan Planning Organization

    2004-12-29

    . Construct Additional Rail and Complete Rail Realignments E. Construct Intercity Loops 5.14 Future Freeway Traffic Management and Operations Team??pg. 76 5.15 Future Mobility and Arterial Congestion Team???????pg. 77 5.16 Goals to Meet Transportation... of Mobility Level of Accessibility System Relationships Interstate or Freeway Connects urban and rural service, connects urban sub regions, connects urban areas. There is no direct land access. Used for long trips at high speeds...

  13. Chicago Metropolitan Agency for Planning Summary of Reported Data From July 1, 2010 - September 30, 2013

    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:FinancingPetroleum Based Fuels|Programs |Chart of breakout of fundsChicago Metropolitan Agency for

  14. Weather and emotional state: a search for associations between weather and calls to telephone counseling services 

    E-Print Network [OSTI]

    Stillman, Daniel Noah

    2000-01-01

    Calls to four telephone counseling services, or "hotlines", each serving communities in a major metropolitan area of the United States (Detroit, Washington DC, Dallas and Seattle), were analyzed for influence from daily weather. Associations...

  15. Detroit folio : Wayne, Detroit, Grosse Pointe, Romulus, and Wyandotte quadrangles, Michigan 

    E-Print Network [OSTI]

    Sherzer, W. H. (William Hittell), 1860-1932.

    1917-01-01

    Calls to four telephone counseling services, or "hotlines", each serving communities in a major metropolitan area of the United States (Detroit, Washington DC, Dallas and Seattle), were analyzed for influence from daily weather. Associations...

  16. Design and analysis of a zero-voltage switching scheme for a dc- to-dc converter 

    E-Print Network [OSTI]

    Arun, G.

    1992-01-01

    DESIGN AND ANALYSIS OF A ZERO-VOLTAGE SSVITCHING SCFIE'. tIE FOR A DC-TO-DC CONVERTER A Thesis by G. ARUN Submitted to the Office of Graduate Studies of Texas ARM 1. niversity in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE December 1992 Major Subject: Electrical Engineering DESIGN AND ANALYSIS OE A ZERO-VOLTAGE SWITCHING SCHEME I'OR A DC-TO-DC CONVERTER A Thesis by G. AR(tN Approved as to style and content by: P. Enjeti (Chair of Cornrnitteel C...

  17. Observations and Tectonic Setting of Historic and Instrumentally Located Earthquakes in the Greater New York CityPhiladelphia Area

    E-Print Network [OSTI]

    in the Greater New York City­Philadelphia Area by Lynn R. Sykes, John G. Armbruster, Won-Young Kim, and Leonardo Seeber Abstract A catalog of 383 earthquakes in southeastern New York, southwestern Connecticut, northern New Jersey, and eastern Pennsylvania, including metropolitan New York City and Philadelphia

  18. High Voltage DC Transmission 1.0 Introduction

    E-Print Network [OSTI]

    McCalley, James D.

    1 High Voltage DC Transmission 1.0 Introduction HVDC has been applied in electric power systems Supplier: ABB Railroa d DC Tie USA - Mission, TX 26°1001N9 8°1925W USA - Mission, TX 26°1001N9 8°1925W 21

  19. DC Optimal Power Flow: Uniqueness and Chee Wei Tan

    E-Print Network [OSTI]

    Tan, Chee Wei

    the minimization of power transmission loss in DC-OPF and char- acterize the uniqueness of its solutions. This hasDC Optimal Power Flow: Uniqueness and Algorithms Chee Wei TanÝ , Desmond W. H. Cai£ and Xin LouÝ Ý and transmission loss in a power net- work subject to physical constraints governed by Kirchhoff's and Ohm's law [1

  20. A 3D Magnetic Force Manipulator DC Prototype

    E-Print Network [OSTI]

    North Carolina at Chapel Hill, University of

    A 3D Magnetic Force Manipulator DC Prototype Leandra Vicci Microelectronic Systems Laboratory optical field intensities which interact strongly with many materials and may produce undesired side;Leandra Vicci A 3D Magnetic Force Manipulator DC Prototype 17 October 2001 1 Conceptual design

  1. Read-out electronics for DC squid magnetic measurements

    DOE Patents [OSTI]

    Ganther, Jr., Kenneth R. (Olathe, KS); Snapp, Lowell D. (Independence, MO)

    2002-01-01

    Read-out electronics for DC SQUID sensor systems, the read-out electronics incorporating low Johnson noise radio-frequency flux-locked loop circuitry and digital signal processing algorithms in order to improve upon the prior art by a factor of at least ten, thereby alleviating problems caused by magnetic interference when operating DC SQUID sensor systems in magnetically unshielded environments.

  2. Peter M. Vallone AAFS Washington, D.C.

    E-Print Network [OSTI]

    Peter M. Vallone AAFS Washington, D.C. February 23, 2008 http://www.cstl.nist.gov/biotech available for the purpose. Our publications and presentations are made available at: http://www.cstl.nist.gov/biotech/strbase/NISTpub.htm #12;Peter M. Vallone AAFS Washington, D.C. February 23, 2008 http://www.cstl.nist.gov/biotech

  3. Tutorial, GECCO'05, Washington D.C. Fitness Approximation

    E-Print Network [OSTI]

    Yang, Shengxiang

    1 Tutorial, GECCO'05, Washington D.C. Fitness Approximation in Evolutionary Computation Yaochu Jin Honda Research Institute Europe Khaled Rasheed University of Georgia Tutorial, GECCO'05, Washington D expensive fitness evaluations Tutorial, GECCO'05, Washington D.C. Fitness Approximation Methods · Problem

  4. National Small Business Federal Contracting Summit-DC Fall Conference

    Broader source: Energy.gov [DOE]

    The 2014 National Small Business Federal Contracting Summit - DC Fall Conference is presented jointly by the National Association of Small Business Contractors (the Supplier Council of The American Small Business Chamber of Commerce) and the U.S. Women's Chamber of Commerce in Washington DC.

  5. Dynamic microscopic theory of fusion using DC-TDHF

    SciTech Connect (OSTI)

    Umar, A. S.; Oberacker, V. E.; Keser, R.; Maruhn, J. A.; Reinhard, P.-G.

    2012-10-20

    The density-constrained time-dependent Hartree-Fock (DC-TDHF) theory is a fully microscopic approach for calculating heavy-ion interaction potentials and fusion cross sections below and above the fusion barrier. We discuss recent applications of DC-TDHF method to fusion of light and heavy systems.

  6. 1668 IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 27, NO. 4, APRIL 2012 55-kW Variable 3X DC-DC Converter for Plug-in

    E-Print Network [OSTI]

    Tolbert, Leon M.

    vehicle (HEV) traction drives. The boost converter used in commercial HEVs meets with obstacles when is shown in Fig. 1. In this system, the dc-dc converter boosts the battery voltage from 244 V to three op series-parallel HEV. speed and power demand of the vehicle. In this traditional dc- dc boost converter

  7. New leading/trailing edge modulation strategies for two-stage AC/DC PFC adapters to reduce DC-link capacitor ripple current 

    E-Print Network [OSTI]

    Sun, Jing

    2007-09-17

    PFC stage and trailing edge modulation for the second DC/DC converter stage can significantly reduce the ripple current and ripple voltage of the DC-link capacitor. Thus, a smaller DC-link capacitance can be used, lowering the cost and size of the AC...

  8. Development of a Novel Bi-Directional Isolated Multiple-Input DC-DC Converter

    SciTech Connect (OSTI)

    Li, H.

    2005-10-24

    There is vital need for a compact, lightweight, and efficient energy-storage system that is both affordable and has an acceptable cycle life for the large-scale production of electric vehicles (EVs) and hybrid electric vehicles (HEVs). Most of the current research employs a battery-storage unit (BU) combined with a fuel cell (FC) stack in order to achieve the operating voltage-current point of maximum efficiency for the FC system. A system block diagram is shown in Fig.1.1. In such a conventional arrangement, the battery is sized to deliver the difference between the energy required by the traction drive and the energy supplied by the FC system. Energy requirements can increase depending on the drive cycle over which the vehicle is expected to operate. Peak-power transients result in an increase of losses and elevated temperatures which result in a decrease in the lifetime of the battery. This research will propose a novel two-input direct current (dc) dc to dc converter to interface an additional energy-storage element, an ultracapacitor (UC), which is shown in Fig.1.2. It will assist the battery during transients to reduce the peak-power requirements of the battery.

  9. Abstract--A design method for digital controller of PWM DC-DC converters was developed, tested by simulations and

    E-Print Network [OSTI]

    domain transformation and discretization. A digital PID controller for a Buck type converter domain and the sampled data domain (via the various transformation algorithms), a digital compensatorAbstract-- A design method for digital controller of PWM DC-DC converters was developed, tested

  10. Phase-Shifted Full Bridge DC-DC Converter with Energy Recovery Clamp and Reduced Circulating Current

    E-Print Network [OSTI]

    Phase-Shifted Full Bridge DC-DC Converter with Energy Recovery Clamp and Reduced Circulating@aei.com Abstract - This paper introduces a full bridge converter with reduced circulating current and a reduction bridge converter operating at 32 kHz switching frequency. Losses and efficiency of the experimental

  11. Optimizing Energy Savings from Direct-DC in U.S. Residential Buildings

    E-Print Network [OSTI]

    Garbesi, Karina

    2012-01-01

    AC vs. DC distribution: A loss comparison. Transmission andof a DC microgrid for residential houses. In Transmission &DC mainly because it enabled central generation and efficient long-distance power transmission.

  12. Application to Export Electric Energy OE Docket No. EA-351 DC...

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

    1 DC Energy Dakota, LLC Application to Export Electric Energy OE Docket No. EA-351 DC Energy Dakota, LLC Application from DC Energy Dakota, LLC to export electric energy to Canada...

  13. We Have a Winner - DC High School Regional Science Bowl Competition...

    Energy Savers [EERE]

    We Have a Winner - DC High School Regional Science Bowl Competition Held Last Saturday We Have a Winner - DC High School Regional Science Bowl Competition Held Last Saturday...

  14. Implementing the DC Mode in Cosmological Simulations with Supercomoving Variables

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

    Gnedin, Nickolay Y; Kravtsov, Andrey V; Rudd, Douglas H

    2011-06-02

    As emphasized by previous studies, proper treatment of the density fluctuation on the fundamental scale of a cosmological simulation volume - the 'DC mode' - is critical for accurate modeling of spatial correlations on scales ~> 10% of simulation box size. We provide further illustration of the effects of the DC mode on the abundance of halos in small boxes and show that it is straightforward to incorporate this mode in cosmological codes that use the 'supercomoving' variables. The equations governing evolution of dark matter and baryons recast with these variables are particularly simple and include the expansion factor, andmore »hence the effect of the DC mode, explicitly only in the Poisson equation.« less

  15. Thermoelectric DC conductivities and Stokes flows on black hole horizons

    E-Print Network [OSTI]

    Elliot Banks; Aristomenis Donos; Jerome P. Gauntlett

    2015-07-15

    We consider a general class of electrically charged black holes of Einstein-Maxwell-scalar theory that are holographically dual to conformal field theories at finite charge density which break translation invariance explicitly. We examine the linearised perturbations about the solutions that are associated with the thermoelectric DC conductivity. We show that there is a decoupled sector at the black hole horizon which must solve generalised Stokes equations for a charged fluid. By solving these equations we can obtain the DC conductivity of the dual field theory. For one-dimensional lattices we solve the fluid equations to obtain closed form expressions for the DC conductivity in terms of the solution at the black hole horizon. We also determine the leading order DC conductivity for lattices that can be expanded as a perturbative series about translationally invariant solutions.

  16. Radiofrequency amplifier based on a dc superconducting quantum interference device

    DOE Patents [OSTI]

    Hilbert, C.; Martinis, J.M.; Clarke, J.

    1984-04-27

    A low noise radiofrequency amplifer, using a dc SQUID (superconducting quantum interference device) as the input amplifying element. The dc SQUID and an input coil are maintained at superconductivity temperatures in a superconducting shield, with the input coil inductively coupled to the superconducting ring of the dc SQUID. A radiofrequency signal from outside the shield is applied to the input coil, and an amplified radiofrequency signal is developed across the dc SQUID ring and transmitted to exteriorly of the shield. A power gain of 19.5 +- 0.5 dB has been achieved with a noise temperature of 1.0 +- 0.4 K at a frequency of 100 MHz.

  17. National Science Bowl Brings Best and Brightest to DC

    Broader source: Energy.gov [DOE]

    The National Science Bowl Finals in Washington D.C. April 27 to 30 pit 113 high and middle school teams against one another answering questions Jeopardy-style about biology, chemistry, earth science, physics, astronomy, and math.

  18. Thermoelectric DC conductivities and Stokes flows on black hole horizons

    E-Print Network [OSTI]

    Banks, Elliot; Gauntlett, Jerome P

    2015-01-01

    We consider a general class of electrically charged black holes of Einstein-Maxwell-scalar theory that are holographically dual to conformal field theories at finite charge density which break translation invariance explicitly. We examine the linearised perturbations about the solutions that are associated with the thermoelectric DC conductivity. We show that there is a decoupled sector at the black hole horizon which must solve generalised Stokes equations for a charged fluid. By solving these equations we can obtain the DC conductivity of the dual field theory. For one-dimensional lattices we solve the fluid equations to obtain closed form expressions for the DC conductivity in terms of the solution at the black hole horizon. We also determine the leading order DC conductivity for lattices that can be expanded as a perturbative series about translationally invariant solutions.

  19. Thermoelectric DC conductivities with momentum dissipation from higher derivative gravity

    E-Print Network [OSTI]

    Long Cheng; Xian-Hui Ge; Zu-Yao Sun

    2015-04-28

    We present a mechanism of momentum relaxation in higher derivative gravity by adding linear scalar fields to the Gauss-Bonnet theory. We analytically computed all of the DC thermoelectric conductivities in this theory by adopting the method given by Donos and Gauntlett in [arXiv:1406.4742]. The results show that the DC electric conductivity is not a monotonic function of the effective impurity parameter $\\beta$: in the small $\\beta$ limit, the DC conductivity is dominated by the coherent phase, while for larger $\\beta$, pair creation contribution to the conductivity becomes dominant, signaling an incoherent phase. In addition, the DC heat conductivity is found independent of the Gauss-Bonnet coupling constant.

  20. Thermoelectric DC conductivities and Stokes flows on black hole horizons

    E-Print Network [OSTI]

    Elliot Banks; Aristomenis Donos; Jerome P. Gauntlett

    2015-10-11

    We consider a general class of electrically charged black holes of Einstein-Maxwell-scalar theory that are holographically dual to conformal field theories at finite charge density which break translation invariance explicitly. We examine the linearised perturbations about the solutions that are associated with the thermoelectric DC conductivity. We show that there is a decoupled sector at the black hole horizon which must solve generalised Stokes equations for a charged fluid. By solving these equations we can obtain the DC conductivity of the dual field theory. For Q-lattices and one-dimensional lattices we solve the fluid equations to obtain closed form expressions for the DC conductivity in terms of the solution at the black hole horizon. We also determine the leading order DC conductivity for lattices that can be expanded as a perturbative series about translationally invariant solutions.

  1. MDI-QKD: Continuous- versus discrete-variables at metropolitan distances

    E-Print Network [OSTI]

    Stefano Pirandola; Carlo Ottaviani; Gaetana Spedalieri; Christian Weedbrook; Samuel L. Braunstein; Seth Lloyd; Tobias Gehring; Christian S. Jacobsen; Ulrik L. Andersen

    2015-08-01

    In a comment, Xu, Curty, Qi, Qian, and Lo claimed that discrete-variable (DV) measurement device independent (MDI) quantum key distribution (QKD) would compete with its continuous-variable (CV) counterpart at metropolitan distances. Actually, Xu et al.'s analysis supports exactly the opposite by showing that the experimental rate of our CV protocol (achieved with practical room-temperature devices) remains one order of magnitude higher than their purely-numerical and over-optimistic extrapolation for qubits, based on nearly-ideal parameters and cryogenic detectors (unsuitable solutions for a realistic metropolitan network, which is expected to run on cheap room-temperature devices, potentially even mobile). The experimental rate of our protocol (expressed as bits per relay use) is confirmed to be two-three orders of magnitude higher than the rate of any realistic simulation of practical DV-MDI-QKD over short-medium distances. Of course this does not mean that DV-MDI-QKD networks should not be investigated or built, but increasing their rate is a non-trivial practical problem clearly beyond the analysis of Xu et al. Finally, in order to clarify the facts, we also refute a series of incorrect arguments against CV-MDI-QKD and, more generally, CV-QKD, which were made by Xu et al. with the goal of supporting their thesis.

  2. A Multiphase, Modular, Bidirectional, Triple-Voltage DC-DC Converter Power Systems

    SciTech Connect (OSTI)

    Su, Gui-Jia [ORNL; Tang, Lixin [ORNL

    2008-01-01

    Electrical power systems in future hybrid and fuel cell vehicles may employ three voltage [14 V, 42 V, and high voltage (HV)] nets. These will be necessary to accommodate existing 14-V loads as well as efficiently handle new heavy loads at the 42-V net and a traction drive on the HV bus. A low-cost DC-DC converter was proposed for connecting the three voltage nets. It minimizes the number of switches and their associated gate driver components by using two half-bridges and a high-frequency transformer. Another salient feature is that the half bridge on the 42-V bus is also utilized to provide the 14-V bus by operating at duty ratios around an atypical value of 1/3. Moreover, it makes use of the parasitic capacitance of the switches and the transformer leakage inductance for soft switching. The use of half bridges makes the topology well suited for interleaved multiphase modular configurations as a means to increase the power level because the capacitor legs can be shared. This paper presents simulation and experimental results on an interleaved two-phase arrangement rated at 4.5 kW. Also discussed are the benefits of operating with an atypical duty ratio on the transformer and a preferred multiphase configuration to minimize capacitor ripple currents.

  3. Access to jobs : transportation barriers faced by low-skilled autoless workers in U.S. metropolitan areas

    E-Print Network [OSTI]

    Kawabata, Mizuki, 1972-

    2002-01-01

    One of the major concerns in today's urban labor market is spatial mismatch, the geographic separation between jobs and workers. Although numerous studies examine spatial mismatch, most of them focus on inner-city minorities, ...

  4. Identification of Management and Planning Problems of Urban Water Resources in the Metropolitan Area of Greater San Antonio 

    E-Print Network [OSTI]

    Garner, K.; Shih, C. S.

    1971-01-01

    This interim report describes the research performed to date on Project A-017-TEX sponsored by the U. S. Department of Interior Office of Water Resources Research and the Texas A&M University Texas Water Resources ...

  5. From Cars to Casinos: Global Pasts and Local Futures in the Detroit-Windsor Transnational Metropolitan Area [book chapter

    E-Print Network [OSTI]

    Ryan, Brent D.

    Over the past twenty years the topics of globalization and the global city have come to dominate the intellectual dialogue on international planning and development. Related issues like poverty, neocolonialism, sustainability, ...

  6. Project identification and evaluation techniques for transportation infrastructure : assessing their role in metropolitan areas of developing countries

    E-Print Network [OSTI]

    Kumar, Vimal, S.M. Massachusetts Institute of Technology

    2009-01-01

    Project identification and evaluation of transportation infrastructure play a vital role in shaping and sustaining the forms of cities all over the world. These cities differ substantially in character and urban form and ...

  7. A Modification to the NOAH LSM to Simulate Heat Mitigation Strategies in the New York City Metropolitan Area

    E-Print Network [OSTI]

    to simulating the urban environment with a mesocale model has been developed to identify efficient strategies temperature, moisture, and winds within an atmospheric model. This information is used to calculate local for mitigating increases in surface air temperatures associated with the urban heat island (UHI). A key step

  8. Connecting Land Use and Transportation Toward Sustainable Development: A Case Study of Houston-Galveston Metropolitan Area 

    E-Print Network [OSTI]

    Lee, Jae Su

    2011-02-22

    How do land use characteristics affect individual and household travel behavior in a regional context? Can the investigation justify the land use policies to reduce automobile dependence and achieve the goals of sustainable ...

  9. Aalborg Universitet Power flow analysis for droop controlled LV hybrid AC-DC microgrids with virtual

    E-Print Network [OSTI]

    Vasquez, Juan Carlos

    Aalborg Universitet Power flow analysis for droop controlled LV hybrid AC-DC microgrids controlled LV hybrid AC-DC microgrids with virtual impedance. In Proceedings of the IEEE Power & Energy Interlinking converter PV WT IBS DC microgrid DC microgrid AC microgrid AC Load Figure 1. Structure

  10. Switching power converter Figure 1(a): Switching DC-DC converter with analog voltage-mode control

    E-Print Network [OSTI]

    + ­ RC L Vg 1 2 i + v _ Vref + _ Gc(s) VM = 1 PWM u c Switching power converter H v dTs H = 1 design of digital compensators. I. INTRODUCTION Discrete-time modeling of dc-dc switching converters has IEEE. #12;+ ­ R C L Vg 1 2 i + v _ Vref + _ Gc(z) VM = 1 DPWM u c Switching power converter H v dTs H

  11. A High Efficiency DC-DC Converter Topology Suitable for Distributed Large Commercial and Utility Scale PV Systems

    SciTech Connect (OSTI)

    Mohammed S. Agamy; Maja Harfman-Todorovic; Ahmed Elasser; Robert L. Steigerwald; Juan A. Sabate; Song Chi; Adam J. McCann; Li Zhang; Frank Mueller

    2012-09-01

    In this paper a DC-DC power converter for distributed photovoltaic plant architectures is presented. The proposed converter has the advantages of simplicity, high efficiency, and low cost. High efficiency is achieved by having a portion of the input PV power directly fed forward to the output without being processed by the converter. The operation of this converter also allows for a simplified maximum power point tracker design using fewer measurements

  12. Analysis and Comparison between War Driving and War Walk-ing in Metropolitan WiFi Radio Maps

    E-Print Network [OSTI]

    Chu, Hao-hua

    Analysis and Comparison between War Driving and War Walk- ing in Metropolitan WiFi Radio Maps Arvin, Hsinchu County, 310, Taiwan arvin@itri.org.tw ABSTRACT War-driving is currently the most widely adopted cost for war driv- ing is smaller than that of war walking, its positional accu- racy is also lower

  13. An Investigation into the Spatial Variability of Near-Surface Air Temperatures in the Detroit, Michigan, Metropolitan Region*

    E-Print Network [OSTI]

    Brown, Daniel G.

    An Investigation into the Spatial Variability of Near-Surface Air Temperatures in the Detroit. This study focused on the air temperatures in the Detroit, Michigan, metropolitan region during the summer portions of Detroit experienced decreased temperatures during afternoons. 1. Introduction In 2010, more

  14. Estimating overdispersion in the assessment of crime reduction interventions Paul R. Marchant, Leeds Metropolitan University, School of Information m

    E-Print Network [OSTI]

    Barber, Stuart

    , Leeds Metropolitan University, School of Information m Management, Leeds, LS6 3QS; email: p.marchant@leedsmet.ac.uk; phone: 0113 283 6109; fax: 0113 283 7599 Paul D. Baxter* and Stuart Barber, University of Leeds, Department of Statistics, Leeds LS2 9JT; email: pdbaxt@maths.leeds.ac.uk, stuart@maths.leeds.ac.uk; phone

  15. Focus Area 2 Deliverables

    Office of Environmental Management (EM)

    Suppliers Department of Energy Washington, DC 20585 J U N 2 2 2069 MEMORANDUM FOR DISTRIBUTION FROM: DAE Y. CHUNG DEPUTY ASSISTANT SECRETARY FOR SAFETY MANAGEMENT AND OPERATIONS...

  16. Materials with low DC magnetic susceptibility for sensitive magnetic measurements

    E-Print Network [OSTI]

    Khatiwada, Rakshya; Kendrick, Rachel; Khosravi, Marjan; Peters, Michael; Smith, Erick; Snow, Mike

    2015-01-01

    Materials with very low DC magnetic susceptibility have many scientific applications. To our knowledge however, relatively little research has been conducted with the goal to produce a totally nonmagnetic material. This phrase in our case means after spatially averaging over macroscopic volumes, it possesses an average zero DC magnetic susceptibility. We report measurements of the DC magnetic susceptibility of three different types of nonmagnetic materials at room temperature: (I) solutions of paramagnetic salts and diamagnetic liquids, (II) liquid gallium-indium alloys and (III) pressed powder mixtures of tungsten and bismuth. The lowest measured magnetic susceptibility among these candidate materials is in the order of 10^-9 cgs volume susceptibility units, about two orders of magnitude smaller than distilled water. In all cases, the measured concentration dependence of the magnetic susceptibility is consistent with that expected for the weighted sum of the susceptibilities of the separate components within...

  17. Nuclear magnetic resonance experiments with dc SQUID amplifiers

    SciTech Connect (OSTI)

    Heaney, M.B. . Dept. of Physics Lawrence Berkeley Lab., CA )

    1990-11-01

    The development and fabrication of dc SQUIDs (Superconducting QUantum Interference Devices) with Nb/Al{sub 2}O{sub 3}/Nb Josephson junctions is described. A theory of the dc SQUID as a radio-frequency amplifier is presented, with an optimization strategy that accounts for the loading and noise contributions of the postamplifier and maximizes the signal-to-noise ratio of the total system. The high sensitivity of the dc SQUID is extended to high field NMR. A dc SQUID is used as a tuned radio-frequency amplifier to detect pulsed nuclear magnetic resonance at 32 MHz from a metal film in a 3.5 Tesla static field. A total system noise temperature of 11 K has been achieved, at a bath temperature of 4.2 K. The minimum number of nuclear Bohr magnetons observable from a free precession signal after a single pulse is about 2 {times} 10{sup 17} in a bandwidth of 25 kHz. In a separate experiment, a dc SQUID is used as a rf amplifier in a NQR experiment to observe a new resonance response mechanism. The net electric polarization of a NaClO{sub 3} crystal due to the precessing electric quadrupole moments of the Cl nuclei is detected at 30 MHz. The sensitivity of NMR and NQR spectrometers using dc SQUID amplifiers is compared to the sensitivity of spectrometers using conventional rf amplifiers. A SQUID-based spectrometer has a voltage sensitivity which is comparable to the best achieved by a FET-based spectrometer, at these temperatures and operating frequencies.

  18. Inductorless DC-AC Cascaded H-bridge Multilevel Boost Inverter for Electric/Hybrid Electric Vehicle

    E-Print Network [OSTI]

    Tolbert, Leon M.

    - DC boost converter to boost the battery voltage for a traditional 3-phase inverter. The present HEV continuous power rating. Currently available power inverter systems for HEVs use a DC-DC boost converter power, the DC-DC boost converter is not needed and the battery voltage will be directly applied

  19. Characterization of the PvdS-regulated promoter motif in Pseudomonas syringae pv. tomato DC3000 reveals

    E-Print Network [OSTI]

    Myers, Chris

    Characterization of the PvdS-regulated promoter motif in Pseudomonas syringae pv. tomato DC3000S, a group IV sigma factor encoded by Pseudomonas syringae pv. tomato DC3000 (DC3000), a plant pathogen, 2002; Potvin et al., 2008). The model plant pathogen Pseudomonas syringae pv. tomato DC3000 (DC3000

  20. High voltage dc--dc converter with dynamic voltage regulation and decoupling during load-generated arcs

    DOE Patents [OSTI]

    Shimer, D.W.; Lange, A.C.

    1995-05-23

    A high-power power supply produces a controllable, constant high voltage output under varying and arcing loads. The power supply includes a voltage regulator, an inductor, an inverter for producing a high frequency square wave current of alternating polarity, an improved inverter voltage clamping circuit, a step up transformer, an output rectifier for producing a dc voltage at the output of each module, and a current sensor for sensing output current. The power supply also provides dynamic response to varying loads by controlling the voltage regulator duty cycle and circuitry is provided for sensing incipient arc currents at the output of the power supply to simultaneously decouple the power supply circuitry from the arcing load. The power supply includes a plurality of discrete switching type dc--dc converter modules. 5 Figs.

  1. High voltage dc-dc converter with dynamic voltage regulation and decoupling during load-generated arcs

    DOE Patents [OSTI]

    Shimer, Daniel W. (Danville, CA); Lange, Arnold C. (Livermore, CA)

    1995-01-01

    A high-power power supply produces a controllable, constant high voltage output under varying and arcing loads. The power supply includes a voltage regulator, an inductor, an inverter for producing a high frequency square wave current of alternating polarity, an improved inverter voltage clamping circuit, a step up transformer, an output rectifier for producing a dc voltage at the output of each module, and a current sensor for sensing output current. The power supply also provides dynamic response to varying loads by controlling the voltage regulator duty cycle and circuitry is provided for sensing incipient arc currents at the output of the power supply to simultaneously decouple the power supply circuitry from the arcing load. The power supply includes a plurality of discrete switching type dc--dc converter modules.

  2. DOE Hosts Festival to Collect Items for Area Food Banks

    Broader source: Energy.gov [DOE]

    WASHINGTON, D.C. – Deputy Secretary of Energy Daniel Poneman and a representative of the Capital Area Food Bank are among the guest speakers at an event this Tuesday, July 31, to collect food items for the DOE Feeds Families drive.

  3. Train the Teacher- Energy Workshops for DC-area Elementary School Teachers

    Broader source: Energy.gov [DOE]

    Are you an elementary school teacher looking for creative ideas to introduce energy curriculum to your students? If so, join us on Friday, May 2, 2014 for an exciting, hands-on training session...

  4. Policy Flash 2013-76 Term Assignments of Contractors to the DC Area |

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

    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 GasAdjustmentsShirleyEnergy AEnergyPresidential PermitDAYS - WE NEEDImplications of

  5. Exploring the Raft River geothermal area, Idaho, with the dc resistivity

    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 J APPENDIX ECoopButtePowerEdisto Electric Coop,Erosion FlumeEvent PlanningBirdsmethod (Abstract) |

  6. DC Resistivity Survey (Dipole-Dipole Array) At Coso Geothermal Area (1977)

    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 J APPENDIX ECoopButtePower VenturesInformation9) Wind Farm JumpAlum|Cyclone PowerD1 FuelDBDBD|

  7. D.C. Water Resource Research Center Annual Technical Report

    E-Print Network [OSTI]

    strengthening a credible program. Proposals submitted to USGS for the 2002 fiscal year was approved and funding to the success of the Institute. Hence, the goals of 2002 fiscal year will continue to fiscal 2003 while DC water resources information has been significantly delayed because UDC website, which hosts WRRI

  8. DC WRRC Report No. 59 DEVELOPMENT OF FREQUENCY

    E-Print Network [OSTI]

    District of Columbia, University of the

    #12;DC WRRC Report No. 59 DEVELOPMENT OF FREQUENCY FUNCTIONS FOR URBAN NON-POINT SOURCE RISK THE CATHOLIC UNIVERSITY OF AMERICA "This work on which this report is based was supported in part by funds guidance during the entire course of the work. Ms. Cathy Saunders served as research assistant

  9. DC WRRC Report No. 139 BOOK OF ABSTRACTS

    E-Print Network [OSTI]

    District of Columbia, University of the

    Washington, DC 20008 , (202) 274- 6400 #12;Table of Contents Preface i I. Social Sciences 1 II. Ground Water THE FEDERAL WATER POLLUTION CONTROL ACT AMENDMENTS OF 1972 Lieber, H. WRRC Report No. 17 DESCRWWRS: Management 208 of the Clean Water Act was examined. The accomplishments and failures of the 208 plans were

  10. Natural Gas Pipeline Leaks Across Washington, DC Robert B. Jackson,,,

    E-Print Network [OSTI]

    Jackson, Robert B.

    Natural Gas Pipeline Leaks Across Washington, DC Robert B. Jackson,,, * Adrian Down, Nathan G increased in recent decades, but incidents involving natural gas pipelines still cause an average of 17 fatalities and $133 M in property damage annually. Natural gas leaks are also the largest anthropogenic

  11. Winter Break Trip 2014 New York City & Washington DC

    E-Print Network [OSTI]

    Hutcheon, James M.

    Winter Break Trip 2014 New York City & Washington DC Tentative Trip Information December 13/Meadowlands 575 Park Plaza Drive Secaucus, NJ 07094 (201) 422-9480 Hotel is located 3 miles west of New York City for departure at 5pm. · Public Transportation to and from the city o Bus stop is at NW E ST & NW New Jersey Ave

  12. HYBRID DC ACCURATE CHARGE AMPLIFIER FOR LINEAR PIEZOELECTRIC POSITIONING

    E-Print Network [OSTI]

    Fleming, Andrew J.

    the diverse literature in- volving piezoelectric applications is the problem of hysteresis (Adriaens et alHYBRID DC ACCURATE CHARGE AMPLIFIER FOR LINEAR PIEZOELECTRIC POSITIONING Andrew J. Fleming, S. O, Australia 2308 Abstract: Piezoelectric transducers are known to exhibit less hysterisis when driven

  13. DC WRRC Report No. 170 Program ReportAnnual

    E-Print Network [OSTI]

    District of Columbia, University of the

    the people living in the north east of Washington, D.C. and measured the degree of their interest products constitute their endorsement by the United States Government. #12;The project entitled "A Pilot of groundwater inflows requires a knowledge of the hydraulic conductivity or permeability of the sediments

  14. Qualifying Exam Presentation: DC Discharge Studies Using PIC-MCC

    E-Print Network [OSTI]

    Wurtele, Jonathan

    Qualifying Exam Presentation: DC Discharge Studies Using PIC-MCC Jeffrey Hammel Department during cylindrical magnetron sputtering To assess the applicability of the PIC-MCC method for modeling;Presentation Overview I. Introduction II. Theory A. Paschen's Law B. Positive Column III. PIC-MCC Simulations A

  15. Fuzzy Estimation of DC Motor Winding Currents Innovatia Software

    E-Print Network [OSTI]

    Simon, Dan

    Fuzzy Estimation of DC Motor Winding Currents Dan Simon Innovatia Software 775 Rothrock Circle °ux is rotated in the desired direction of ofuzzy ¯ltering to motor winding current estimation stator windings. an attractive alternative to current estimation using In order to implement an e

  16. DC powerline communication system using a transmission line transformer for high degree of freedom applications

    E-Print Network [OSTI]

    Wade, Eric R. (Eric Randolph), 1978-

    2004-01-01

    A new type of powerline communication is developed to reduce cable requirements for robotic, electromechanical, and vehicular systems. A DC power bus line connecting a DC power supply to motor drives and sensor units is ...

  17. Energy Secretary Moniz's Remarks at CSIS in Washington D.C. on...

    Energy Savers [EERE]

    Moniz's Remarks at CSIS in Washington D.C. on Energy Security 40 Years after the Embargo - As Delivered Energy Secretary Moniz's Remarks at CSIS in Washington D.C. on Energy...

  18. D.C. Middle and High School Students Get a Chance to Experience...

    Energy Savers [EERE]

    D.C. Middle and High School Students Get a Chance to Experience the Regional Science Bowl Competition Setting D.C. Middle and High School Students Get a Chance to Experience the...

  19. Recovery Act: Integrated DC-DC Conversion for Energy-Efficient Multicore Processors

    SciTech Connect (OSTI)

    Shepard, Kenneth L

    2013-03-31

    In this project, we have developed the use of thin-film magnetic materials to improve in energy efficiency of digital computing applications by enabling integrated dc-dc power conversion and management with on-chip power inductors. Integrated voltage regulators also enables fine-grained power management, by providing dynamic scaling of the supply voltage in concert with the clock frequency of synchronous logic to throttle power consumption at periods of low computational demand. The voltage converter generates lower output voltages during periods of low computational performance requirements and higher output voltages during periods of high computational performance requirements. Implementation of integrated power conversion requires high-capacity energy storage devices, which are generally not available in traditional semiconductor processes. We achieve this with integration of thin-film magnetic materials into a conventional complementary metal-oxide-semiconductor (CMOS) process for high-quality on-chip power inductors. This project includes a body of work conducted to develop integrated switch-mode voltage regulators with thin-film magnetic power inductors. Soft-magnetic materials and inductor topologies are selected and optimized, with intent to maximize efficiency and current density of the integrated regulators. A custom integrated circuit (IC) is designed and fabricated in 45-nm CMOS silicon-on-insulator (SOI) to provide the control system and power-train necessary to drive the power inductors, in addition to providing a digital load for the converter. A silicon interposer is designed and fabricated in collaboration with IBM Research to integrate custom power inductors by chip stacking with the 45-nm CMOS integrated circuit, enabling power conversion with current density greater than 10A/mm2. The concepts and designs developed from this work enable significant improvements in performance-per-watt of future microprocessors in servers, desktops, and mobile devices. These new approaches to scaled voltage regulation for computing devices also promise significant impact on electricity consumption in the United States and abroad by improving the efficiency of all computational platforms. In 2006, servers and datacenters in the United States consumed an estimated 61 billion kWh or about 1.5% of the nation's total energy consumption. Federal Government servers and data centers alone accounted for about 10 billion kWh, for a total annual energy cost of about $450 million. Based upon market growth and efficiency trends, estimates place current server and datacenter power consumption at nearly 85 billion kWh in the US and at almost 280 billion kWh worldwide. Similar estimates place national desktop, mobile and portable computing at 80 billion kWh combined. While national electricity utilization for computation amounts to only 4% of current usage, it is growing at a rate of about 10% a year with volume servers representing one of the largest growth segments due to the increasing utilization of cloud-based services. The percentage of power that is consumed by the processor in a server varies but can be as much as 30% of the total power utilization, with an additional 50% associated with heat removal. The approaches considered here should allow energy efficiency gains as high as 30% in processors for all computing platforms, from high-end servers to smart phones, resulting in a direct annual energy savings of almost 15 billion kWh nationally, and 50 billion kWh globally. The work developed here is being commercialized by the start-up venture, Ferric Semiconductor, which has already secured two Phase I SBIR grants to bring these technologies to the marketplace.

  20. Fig.1: Digital Controller with modified buck-boost converter LOAD-INTERACTIVE STEERED-INDUCTOR DC-DC

    E-Print Network [OSTI]

    Prodiæ, Aleksandar

    Fig.1: Digital Controller with modified buck-boost converter LOAD-INTERACTIVE STEERED-INDUCTOR DC-inverting buck- boost. Transient response results show that, compared to standard converters with near-inverting buck-boost converter, i.e. steered-inductor buck-boost, a digital controller, and a communication block

  1. Building Scale DC Microgrids Chris Marnay, Steven Lanzisera, Michael Stadler, and Judy Lai

    E-Print Network [OSTI]

    of building loads are either native DC, such as electronics and compact fluorescent and light emitting diode

  2. Potential Federal On-Site Solar Aggregation in Washington, D.C., and Maryland

    Broader source: Energy.gov [DOE]

    Presentation describes potential Federal on-site solar aggregation opportunities in Washington, D.C., and Maryland.

  3. Interviews in Washington, DC for Albert Einstein Fellowship Semi-Finalists

    Broader source: Energy.gov [DOE]

    Selected semi-finalists in the Albert Einstein Distinguished Educator Fellowship are invited to DC for interviews.

  4. Demonstration of LED Retrofit Lamps at the Smithsonian Art Museum, Washington, DC

    SciTech Connect (OSTI)

    Miller, N. J.; Rosenfeld, S. M.

    2012-06-01

    GATEWAY program report on a demonstration of LED retrofit lamps at the Smithsonian American Art Museum in Washington, DC.

  5. Sputter target erosion and its effects on long duration DC magnetron sputter coating

    E-Print Network [OSTI]

    Schoff, Michael Elliott

    2009-01-01

    Duration DC Magnetron Sputter Coating A thesis submitted in1 II. Sputter Coating24 VII. Coating Rate vs.

  6. Research Areas

    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 of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDid youOxygen Generation |Publications TheGashome /Areas Research Areas

  7. A nonlinear robust HVDC control for a parallel AC/DC power system

    E-Print Network [OSTI]

    Qu, Zhihua

    recognized that, through an HVDC transmission line, fast electronic control can be applied on the DC power, controlling DC line transmission power can improve stability of the AC system after a major disturbanceA nonlinear robust HVDC control for a parallel AC/DC power system Hongzhi Cai a , Zhihua Qu b

  8. Towards Building an Optimal Demand Response Framework for DC Distribution Networks

    E-Print Network [OSTI]

    Mohsenian-Rad, Hamed

    Towards Building an Optimal Demand Response Framework for DC Distribution Networks Hamed Mohsenian, an optimization-based foundation is proposed for demand response in DC distribution networks in presence to assess the performance and to gain insights into the proposed demand-response paradigm. Keywords: DC

  9. Aalborg Universitet Generation-Side Power Scheduling in a Grid-Connected DC Microgrid

    E-Print Network [OSTI]

    Vasquez, Juan Carlos

    Aalborg Universitet Generation-Side Power Scheduling in a Grid-Connected DC Microgrid Hernández). Generation-Side Power Scheduling in a Grid-Connected DC Microgrid. In IEEE ICDCM 2015. IEEE. General rights.aau.dk on: juli 04, 2015 #12;Generation-Side Power Scheduling in a Grid-Connected DC Microgrid Adriana C

  10. Aalborg Universitet Modeling, Stability Analysis and Active Stabilization of Multiple DC-Microgrids Clusters

    E-Print Network [OSTI]

    Vasquez, Juan Carlos

    Aalborg Universitet Modeling, Stability Analysis and Active Stabilization of Multiple DC-Microgrids and Active Stabilization of Multiple DC-Microgrids Clusters. In Proceedings of the 2014 IEEE International of Multiple DC-Microgrid Clusters," in Proc. IEEE International Energy Conference (EnergyCon'14), 2014

  11. Aalborg Universitet Agent-based distributed hierarchical control of dc microgrid systems

    E-Print Network [OSTI]

    Vasquez, Juan Carlos

    Aalborg Universitet Agent-based distributed hierarchical control of dc microgrid systems Meng, J. M., & Dragicevic, T. (2014). Agent-based distributed hierarchical control of dc microgrid systems-BASED DISTRIBUTED HIERARCHICAL CONTROL OF DC MICROGRID SYSTEMS Lexuan Meng, Tomislav Dragicevic, Josep M. Guerrero

  12. OLENDER REPORTING, INC. 1100 Connecticut Avenue NW, #810, Washington, DC 20036

    E-Print Network [OSTI]

    1 OLENDER REPORTING, INC. 1100 Connecticut Avenue NW, #810, Washington, DC 20036 Washington: 202 Avenue17 Washington, D.C.18 19 20 21 22 #12;2 OLENDER REPORTING, INC. 1100 Connecticut Avenue NW, #810 #12;3 OLENDER REPORTING, INC. 1100 Connecticut Avenue NW, #810, Washington, DC 20036 Washington: 202

  13. Control of a Fuel-Cell Powered DC Electric Vehicle Motor

    E-Print Network [OSTI]

    Skogestad, Sigurd

    Control of a Fuel-Cell Powered DC Electric Vehicle Motor Federico Zenith Sigurd Skogestad Meeting, 2005 www.ntnu.no Federico Zenith, Sigurd Skogestad, Control of a Fuel-Cell Powered DC Electric Vehicle Motor #12;2 Outline 1) Control of Fuel Cells--Status 2) Dynamic Modelling of Fuel Cells 3) DC

  14. Multilevel cascade voltage source inverter with separate DC sources

    DOE Patents [OSTI]

    Peng, F.Z.; Lai, J.S.

    1997-06-24

    A multilevel cascade voltage source inverter having separate DC sources is described herein. This inverter is applicable to high voltage, high power applications such as flexible AC transmission systems (FACTS) including static VAR generation (SVG), power line conditioning, series compensation, phase shifting and voltage balancing and fuel cell and photovoltaic utility interface systems. The M-level inverter consists of at least one phase wherein each phase has a plurality of full bridge inverters equipped with an independent DC source. This inverter develops a near sinusoidal approximation voltage waveform with only one switching per cycle as the number of levels, M, is increased. The inverter may have either single-phase or multi-phase embodiments connected in either wye or delta configurations. 15 figs.

  15. Multilevel cascade voltage source inverter with seperate DC sources

    DOE Patents [OSTI]

    Peng, Fang Zheng (Oak Ridge, TN); Lai, Jih-Sheng (Knoxville, TN)

    1997-01-01

    A multilevel cascade voltage source inverter having separate DC sources is described herein. This inverter is applicable to high voltage, high power applications such as flexible AC transmission systems (FACTS) including static VAR generation (SVG), power line conditioning, series compensation, phase shifting and voltage balancing and fuel cell and photovoltaic utility interface systems. The M-level inverter consists of at least one phase wherein each phase has a plurality of full bridge inverters equipped with an independent DC source. This inverter develops a near sinusoidal approximation voltage waveform with only one switching per cycle as the number of levels, M, is increased. The inverter may have either single-phase or multi-phase embodiments connected in either wye or delta configurations.

  16. Multilevel cascade voltage source inverter with seperate DC sources

    DOE Patents [OSTI]

    Peng, Fang Zheng; Lai, Jih-Sheng

    2001-04-03

    A multilevel cascade voltage source inverter having separate DC sources is described herein. This inverter is applicable to high voltage, high power applications such as flexible AC transmission systems (FACTS) including static VAR generation (SVG), power line conditioning, series compensation, phase shifting and voltage balancing and fuel cell and photovoltaic utility interface systems. The M-level inverter consists of at least one phase wherein each phase has a plurality of full bridge inverters equipped with an independent DC source. This inverter develops a near sinusoidal approximation voltage waveform with only one switching per cycle as the number of levels, M, is increased. The inverter may have either single-phase or multi-phase embodiments connected in either wye or delta configurations.

  17. Multilevel cascade voltage source inverter with seperate DC sources

    DOE Patents [OSTI]

    Peng, Fang Zheng (Knoxville, TN); Lai, Jih-Sheng (Blacksburg, VA)

    2002-01-01

    A multilevel cascade voltage source inverter having separate DC sources is described herein. This inverter is applicable to high voltage, high power applications such as flexible AC transmission systems (FACTS) including static VAR generation (SVG), power line conditioning, series compensation, phase shifting and voltage balancing and fuel cell and photovoltaic utility interface systems. The M-level inverter consists of at least one phase wherein each phase has a plurality of full bridge inverters equipped with an independent DC source. This inverter develops a near sinusoidal approximation voltage waveform with only one switching per cycle as the number of levels, M, is increased. The inverter may have either single-phase or multi-phase embodiments connected in either wye or delta configurations.

  18. AVTA: Battery Testing- DC Fast Charging's Effects on PEV Batteries

    Broader source: Energy.gov [DOE]

    The Vehicle Technologies Office's Advanced Vehicle Testing Activity carries out testing on a wide range of advanced vehicles and technologies on dynamometers, closed test tracks, and on-the-road. These results provide benchmark data that researchers can use to develop technology models and guide future research and development. The following report describes DC fast charging's effects on plug-in electric vehicle batteries. This research was conducted by Idaho National Laboratory.

  19. The Use of DC Glow Discharges as Undergraduate Educational Tools

    SciTech Connect (OSTI)

    Stephanie A. Wissel and Andrew Zwicker, Jerry Ross, and Sophia Gershman

    2012-10-09

    Plasmas have a beguiling way of getting students excited and interested in physics. We argue that plasmas can and should be incorporated into the undergraduate curriculum as both demonstrations and advanced investigations of electromagnetism and quantum effects. Our device, based on a direct current (DC) glow discharge tube, allows for a number of experiments into topics such as electrical breakdown, spectroscopy, magnetism, and electron temperature.

  20. dc-plasma-sprayed electronic-tube device

    DOE Patents [OSTI]

    Meek, T.T.

    1982-01-29

    An electronic tube and associated circuitry which is produced by dc plasma arc spraying techniques is described. The process is carried out in a single step automated process whereby both active and passive devices are produced at very low cost. The circuitry is extremely reliable and is capable of functioning in both high radiation and high temperature environments. The size of the electronic tubes produced are more than an order of magnitude smaller than conventional electronic tubes.

  1. Synthesis of silicon nanotubes by DC arc plasma method

    SciTech Connect (OSTI)

    Tank, C. M.; Bhoraskar, S. V.; Mathe, V. L.

    2012-06-05

    Plasma synthesis is a novel technique of synthesis of nanomaterials as they provide high rate of production and promote metastable reactions. Very thin walled silicon nanotubes were synthesized in a DC direct arc thermal plasma reactor. The effect of parameters of synthesis i.e. arc current and presence of hydrogen on the morphology of Si nanoparticles is reported. Silicon nanotubes were characterized by Transmission Electron Microscopy (TEM), Local Energy Dispersive X-ray analysis (EDAX), and Scanning Tunneling Microscopy (STM).

  2. Report on Non-Contact DC Electric Field Sensors

    SciTech Connect (OSTI)

    Miles, R; Bond, T; Meyer, G

    2009-06-16

    This document reports on methods used to measure DC electrostatic fields in the range of 100 to 4000 V/m using a non-contact method. The project for which this report is written requires this capability. Non-contact measurements of DC fields is complicated by the effect of the accumulation of random space-charges near the sensors which interfere with the measurement of the field-of-interest and consequently, many forms of field measurements are either limited to AC measurements or use oscillating devices to create pseudo-AC fields. The intent of this document is to report on methods discussed in the literature for non-contact measurement of DC fields. Electric field meters report either the electric field expressed in volts per distance or the voltage measured with respect to a ground reference. Common commercial applications for measuring static (DC) electric fields include measurement of surface charge on materials near electronic equipment to prevent arcing which can destroy sensitive electronic components, measurement of the potential for lightning to strike buildings or other exposed assets, measurement of the electric fields under power lines to investigate potential health risks from exposure to EM fields and measurement of fields emanating from the brain for brain diagnostic purposes. Companies that make electric field sensors include Trek (Medina, NY), MKS Instruments, Boltek, Campbell Systems, Mission Instruments, Monroe Electronics, AlphaLab, Inc. and others. In addition to commercial vendors, there are research activities continuing in the MEMS and optical arenas to make compact devices using the principles applied to the larger commercial sensors.

  3. Energy Incentive Programs, Washington DC | 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: AlternativeCommunication3-EDepartment ofArizona EnergyHampshire EnergyOregonTexasWashington DC

  4. Final Independent External Peer Review Report Fargo-Moorhead Metropolitan Flood Risk

    E-Print Network [OSTI]

    US Army Corps of Engineers

    feet in 51 of the past 107 years, and every year from 1993 through 2009. The study area is between in Minnesota also cross the study area. The primary problem in the study area is a high risk of flood damage, Canada. The drainage area of the Red River of the North above the U.S. Geological Survey gauging station

  5. OUTLINE OF DATA SOURCES, MAY 1933 LANDAREAS OCEAN AREAS SOURCES OF DATA

    E-Print Network [OSTI]

    ~ecldeallydv- en.but when Drmnt weather is rewrted: Base map descdptIon N used when coverage mbsing "round i#12;#12;#12;OUTLINE OF DATA SOURCES, MAY 1933 LANDAREAS OCEAN AREAS SOURCES OF DATA Area Bource National dfdeordogiguc dc Efance. 2 Daily Weather Report, Egypt. 3 Monthly Meteorological Bulletin, Nanking

  6. Determining the Optimal Search Area for a Serial Mike O'Leary

    E-Print Network [OSTI]

    O'Leary, Michael

    Determining the Optimal Search Area for a Serial Criminal Mike O'Leary Department of Mathematics Towson University Joint Mathematics Meetings Washington DC, 2009 Mike O'Leary (Towson University) Optimal Department Mike O'Leary (Towson University) Optimal Search Areas for Serial Criminals January 7, 2009 2 / 31

  7. Using Nyquist or Nyquist-Like Plot to Predict Three Typical Instabilities in DC-DC Converters

    E-Print Network [OSTI]

    Fang, Chung-Chieh

    2012-01-01

    By transforming an exact stability condition, a new Nyquist-like plot is proposed to predict occurrences of three typical instabilities in DC-DC converters. The three instabilities are saddle-node bifurcation (coexistence of multiple solutions), period-doubling bifurcation (subharmonic oscillation), and Neimark bifurcation (quasi-periodic oscillation). In a single plot, it accurately predicts whether an instability occurs and what type the instability is. The plot is equivalent to the Nyquist plot, and it is a useful design tool to avoid these instabilities. Nine examples are used to illustrate the accuracy of this new plot to predict instabilities in the buck or boost converter with fixed or variable switching frequency.

  8. Using Nyquist or Nyquist-Like Plot to Predict Three Typical Instabilities in DC-DC Converters

    E-Print Network [OSTI]

    Chung-Chieh Fang

    2012-04-09

    By transforming an exact stability condition, a new Nyquist-like plot is proposed to predict occurrences of three typical instabilities in DC-DC converters. The three instabilities are saddle-node bifurcation (coexistence of multiple solutions), period-doubling bifurcation (subharmonic oscillation), and Neimark bifurcation (quasi-periodic oscillation). In a single plot, it accurately predicts whether an instability occurs and what type the instability is. The plot is equivalent to the Nyquist plot, and it is a useful design tool to avoid these instabilities. Nine examples are used to illustrate the accuracy of this new plot to predict instabilities in the buck or boost converter with fixed or variable switching frequency.

  9. Multiphase soft switched DC/DC converter and active control technique for fuel cell ripple current elimination

    DOE Patents [OSTI]

    Lai, Jih-Sheng (Blacksburg, VA); Liu, Changrong (Sunnyvale, CA); Ridenour, Amy (Salem, VA)

    2009-04-14

    DC/DC converter has a transformer having primary coils connected to an input side and secondary coils connected to an output side. Each primary coil connects a full-bridge circuit comprising two switches on two legs, the primary coil being connected between the switches on each leg, each full-bridge circuit being connected in parallel wherein each leg is disposed parallel to one another, and the secondary coils connected to a rectifying circuit. An outer loop control circuit that reduces ripple in a voltage reference has a first resistor connected in series with a second resistor connected in series with a first capacitor which are connected in parallel with a second capacitor. An inner loop control circuit that reduces ripple in a current reference has a third resistor connected in series with a fourth resistor connected in series with a third capacitor which are connected in parallel with a fourth capacitor.

  10. Deep Trench Capacitor based Step-up and Step-down DC/DC Converters in 32nm SOI with Opportunistic

    E-Print Network [OSTI]

    Sapatnekar, Sachin

    Deep Trench Capacitor based Step-up and Step-down DC/DC Converters in 32nm SOI with Opportunistic domains. Using ultra-high density deep trench capacitors, we are able to achieve an output power density-power domain scenario by implementing a bi-directional opportunistic current borrowing scheme. Deep trench

  11. Abstract--Emerging high-end portable electronics demand on-chip integration of high-performance dc-dc power supplies not

    E-Print Network [OSTI]

    Rincon-Mora, Gabriel A.

    series resistance (ESR) output capacitors, it is not clear how it applies to boost converters boost converter. Experimental results verified the switching supply was stable across 1-30µH, 1-350µ variation to less than 27%. Index Terms--differential control, boost dc-dc converter I. INTRODUCTION

  12. SoC Energy Savings = Reduce+Reuse+Recycle: A Case Study Using a 660MHz DC-DC Converter with Integrated Output Filter

    E-Print Network [OSTI]

    Lemieux, Guy

    that requires careful planning of the interface between the provider and receptor of the energy. In this paper between energy provider and receptor. Since fully integrated on-chip regulators are usually inefficientSoC Energy Savings = Reduce+Reuse+Recycle: A Case Study Using a 660MHz DC-DC Converter

  13. 2004 35Ih Annual IEEE Power Elearonics Specialisrs Conference Aachen, Germany,2004 Modeling of Quantization Effects in Digitally Controlled DC-DC Converters

    E-Print Network [OSTI]

    Prodiæ, Aleksandar

    : {hpeng,maksimov)@colorado.edu Abstract- In digitally controlled DC-DC converters with a single voltage variations, programmability, reduction or elimination of external passive components, as well a conservative hound for the limit-cycle oscillation amplitude, while Section VI11 summarizes the conclusions. 11

  14. 26.2 Single-Inductor Dual-Input Dual-Output Buck-Boost Fuel Cell-Li Ion Charging DC-DC Converter Supply

    E-Print Network [OSTI]

    Rincon-Mora, Gabriel A.

    1 26.2 Single-Inductor Dual-Input Dual-Output Buck-Boost Fuel Cell-Li Ion Charging DC-DC Converter battery with its energy-dense counterpart like the fuel cell (FC) improves micro-scale integration [2]. As a result, buck or boost single-inductor, dual-input, dual-output (SIDIDO) converters enjoy

  15. Abstract -This paper presents the coordinated control of distributed energy storage systems (DESSs) in DC micro-grids.

    E-Print Network [OSTI]

    Vasquez, Juan Carlos

    ) in DC micro-grids. In order to balance the state-of-charge (SoC) of each energy storage unit (ESU--Droop control; distributed energy storage system (DESS); DC micro-grids; state-of-charge (SoC) I. INTRODUCTION and more popularity [1]. Nowadays DC micro-grids are becoming more attractive with the raise of DC power

  16. 650 IEEE TRANSACTIONS ON POWER DELIVERY, VOL. 26, NO. 2, APRIL 2011 Hourly Scheduling of DC Transmission Lines in

    E-Print Network [OSTI]

    Fu, Yong

    ). The impact of VSC-DC transmission system on the economics and the security of integrated ac/dc transmission will determine the optimal hourly schedule of controllable VSC-DC transmission systems in electricity markets;LOTFJOU et al.: HOURLY SCHEDULING OF DC TRANSMISSION LINES 651 , Vector of real and reactive power

  17. 936 IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 50, NO. 5, OCTOBER 2003 Gain Adaptation of Networked DC Motor Controllers

    E-Print Network [OSTI]

    Chow, Mo-Yuen

    ) milling machine, dc motors can be connected to controllers, drivers and sensors by directly wiring

  18. Materials with low DC magnetic susceptibility for sensitive magnetic measurements

    E-Print Network [OSTI]

    Rakshya Khatiwada; Lawrence Dennis; Rachel Kendrick; Marjan Khosravi; Michael Peters; Erick Smith; Mike Snow

    2015-06-30

    Materials with very low DC magnetic susceptibility have many scientific applications. To our knowledge however, relatively little research has been conducted with the goal to produce a totally nonmagnetic material. This phrase in our case means after spatially averaging over macroscopic volumes, it possesses an average zero DC magnetic susceptibility. We report measurements of the DC magnetic susceptibility of three different types of nonmagnetic materials at room temperature: (I) solutions of paramagnetic salts and diamagnetic liquids, (II) liquid gallium-indium alloys and (III) pressed powder mixtures of tungsten and bismuth. The lowest measured magnetic susceptibility among these candidate materials is in the order of 10^-9 cgs volume susceptibility units, about two orders of magnitude smaller than distilled water. In all cases, the measured concentration dependence of the magnetic susceptibility is consistent with that expected for the weighted sum of the susceptibilities of the separate components within experimental error. These results verify the Wiedemann additivity law and thereby realize the ability to produce materials with small but tunable magnetic susceptibility. For our particular scientific application, we are also looking for materials with the largest possible number of neutrons and protons per unit volume. The gallium-indium alloys fabricated and measured in this work possess to our knowledge the smallest ratio of volume magnetic susceptibility to nucleon number density per unit volume for a room temperature liquid, and the tungsten-bismuth pressed powder mixtures possess to our knowledge the smallest ratio of volume magnetic susceptibility to nucleon number density per unit volume for a room temperature solid. This ratio is a figure of merit for a certain class of precision experiments that search for possible exotic spin-dependent forces of Nature.

  19. Positron lifetime spectrometer using a DC positron beam

    DOE Patents [OSTI]

    Xu, Jun; Moxom, Jeremy

    2003-10-21

    An entrance grid is positioned in the incident beam path of a DC beam positron lifetime spectrometer. The electrical potential difference between the sample and the entrance grid provides simultaneous acceleration of both the primary positrons and the secondary electrons. The result is a reduction in the time spread induced by the energy distribution of the secondary electrons. In addition, the sample, sample holder, entrance grid, and entrance face of the multichannel plate electron detector assembly are made parallel to each other, and are arranged at a tilt angle to the axis of the positron beam to effectively separate the path of the secondary electrons from the path of the incident positrons.

  20. Hardwired Control Changes For NSTX DC Power Feeds

    SciTech Connect (OSTI)

    Ramakrishnan, S.

    2013-06-28

    The National Spherical Torus Experiment (NSTX) has been designed and installed in the existing facilities at Princeton Plasma Physics Laboratory (PPPL). Most of the hardware, plant facilities, auxiliary sub-systems, and power systems originally used for the Tokamak Fusion Test Reactor (TFTR) have been used with suitable modifications to reflect NSTX needs. The original TFTR Hardwired Control System (HCS) with electromechanical relays was used for NSTX DC Power loop control and protection during NSTX operations. As part of the NSTX Upgrade, the HCS is being changed to a PLC-based system with the same control logic. This paper gives a description of the changeover to the new PLC-based system __________________________________________________

  1. Heteroepitaxial Ge-on-Si by DC magnetron sputtering

    SciTech Connect (OSTI)

    Steglich, Martin; Schrempel, Frank; Füchsel, Kevin; Kley, Ernst-Bernhard; Patzig, Christian; Berthold, Lutz; Höche, Thomas; Tünnermann, Andreas; Fraunhofer Institute for Applied Optics and Precision Engineering IOF, Albert-Einstein-Str. 7, 07745 Jena

    2013-07-15

    The growth of Ge on Si(100) by DC Magnetron Sputtering at various temperatures is studied by Spectroscopic Ellipsometry and Transmission Electron Microscopy. Smooth heteroepitaxial Ge films are prepared at relatively low temperatures of 380°C. Typical Stransky-Krastanov growth is observed at 410°C. At lower temperatures (320°C), films are essentially amorphous with isolated nanocrystallites at the Si-Ge interface. A minor oxygen contamination at the interface, developing after ex-situ oxide removal, is not seen to hinder epitaxy. Compensation of dislocation-induced acceptors in Ge by sputtering from n-doped targets is proposed.

  2. EA-327-A DC Energy, LLC | Department of Energy

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

    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 GasAdjustmentsShirleyEnergy A plug-inPPL EnergyPlus, LLC to export electricSilverhill Ltdto export electricDC

  3. EA-351 DC Energy Dakota, LLC | Department of Energy

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

    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 GasAdjustmentsShirleyEnergy A plug-inPPL EnergyPlus, LLC to export electricSilverhillSaracenCreditNextEraDC

  4. EA-377 DC Energy Texas | Department of Energy

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

    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 GasAdjustmentsShirleyEnergy A plug-inPPL EnergyPlus, LLC to exportEndure Energy,Vitol Inc toDC Energy Texas to

  5. Category:DC Resistivity Survey (Wenner Array) | 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 JEnvironmentalBowerbank,Cammack Village,8199089°,AnalyticalCuttings Analysis JumpDC Resistivity

  6. Global DC Power System Market Analysis | OpenEI Community

    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 J APPENDIXsource History View New Pages RecentPlant <SilverChange Associates JumpGlobal DC Power

  7. DC Resistivity Survey (Dipole-Dipole Array) | 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 J APPENDIX ECoopButtePower VenturesInformation9) Wind Farm JumpAlum|Cyclone PowerD1DC

  8. Categorical Exclusion Determinations: Washington, D.C. | Department of

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

    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 GasAdjustmentsShirleyEnergyTher i n c i p a lCaribElectricSouth Dakota. DOCUMENTSEnergy Washington, D.C.

  9. DOE Designates Southwest Area and Mid-Atlantic Area National...

    Energy Savers [EERE]

    Corridors October 2, 2007 - 11:12am Addthis WASHINGTON, DC - U.S. Department of Energy (DOE) Assistant Secretary for Electricity Delivery and Energy Reliability Kevin M....

  10. Single-mode deformation via nanoindentation in dc-Si

    SciTech Connect (OSTI)

    Wong, Sherman; Haberl, Bianca; Williams, James S.; Bradby, Jodie E.

    2015-01-01

    The mixture of the metastable body-centered cubic (bc8) and rhombohedral (r8) phases of silicon that is formed via nanoindentation of diamond cubic (dc) silicon exhibits properties that are of scientifc and technological interest. This letter demonstrates that large regions of this mixed phase can be formed in crystalline Si via nanoindentation without signifcant damage to the surrounding crystal. Cross-sectional transmission electron microscopy is used to show that volumes 6 um wide and up to 650 nm deep can be generated in this way using a spherical tip of 21.5 um diameter. The phase transformed region is characterised using both Raman microspectroscopy and transmission electron microscopy. It is found that uniform loading using large spherical indenters can favor phase transformation as the sole deformation mechanism as long as the maximum load is below a critical level. We suggest that the sluggish nature of the transformation from the dc-Si phase to the metallic (b-Sn) phase normally results in competing deformation mechanisms such as slip and cracking but these can be suppressed by controlled loading conditions.

  11. DC switching regulated power supply for driving an inductive load

    DOE Patents [OSTI]

    Dyer, G.R.

    1983-11-29

    A dc switching regulated power supply for driving an inductive load is provided. The regulator basic circuit is a bridge arrangement of diodes and transistors. First and second opposite legs of the bridge are formed by first and second parallel-connected transistor arrays, respectively, while the third and fourth legs of the bridge are formed by appropriately connected first and second parallel connected diode arrays, respectively. A dc power supply is connected to the input of the bridge and the output is connected to the load. A servo controller is provided to control the switching rate of the transistors to maintain a desired current to the load. The regulator may be operated in three stages or modes: (1) for current runup in the load, both first and second transistor switch arrays are turned on and current is supplied to the load through both transistor arrays. (2) When load current reaches the desired level, the first switch is turned off, and load current flywheels through the second switch array and the fourth leg diode array connecting the second switch array in series with the load. Current is maintained by alternating between modes 1 and 2 at a suitable duty cycle and switching rate set by the controller. (3) Rapid current rundown is accomplished by turning both switch arrays off, allowing load current to be dumped back into the source through the third and fourth diode arrays connecting the source in series opposition with the load to recover energy from the inductive load.

  12. Optimizing Energy Savings from Direct-DC in U.S. Residential Buildings

    E-Print Network [OSTI]

    Garbesi, Karina

    2012-01-01

    ballast fluorescent and LED lighting, which are DC- internalmotors [7]. Fluorescent and LED lighting uses one-quarter ofbest technology Lighting Incandescent, fluorescent, LED

  13. Optimizing Energy Savings from Direct-DC in U.S. Residential Buildings

    E-Print Network [OSTI]

    Garbesi, Karina

    2012-01-01

    motors [7]. Fluorescent and LED lighting uses one-quarter ofballast fluorescent and LED lighting, which are DC- internalbest technology Lighting Incandescent, fluorescent, LED

  14. Optimization of spin-torque switching using AC and DC pulses

    SciTech Connect (OSTI)

    Dunn, Tom [Department of Physics, University of Minnesota, Minneapolis, Minnesota 55455 (United States); Kamenev, Alex [Department of Physics, University of Minnesota, Minneapolis, Minnesota 55455 (United States); Fine Theoretical Physics Institute, University of Minnesota, Minneapolis, Minnesota 55455 (United States)

    2014-06-21

    We explore spin-torque induced magnetic reversal in magnetic tunnel junctions using combined AC and DC spin-current pulses. We calculate the optimal pulse times and current strengths for both AC and DC pulses as well as the optimal AC signal frequency, needed to minimize the Joule heat lost during the switching process. The results of this optimization are compared against numeric simulations. Finally, we show how this optimization leads to different dynamic regimes, where switching is optimized by either a purely AC or DC spin-current, or a combination AC/DC spin-current, depending on the anisotropy energies and the spin-current polarization.

  15. Bulletin of the Seismological Society of America, Vol. 94, No. 6, pp. 21372163, December 2004 A Probabilistic Approach to Seismic Hazard in Metropolitan France

    E-Print Network [OSTI]

    Avouac, Jean-Philippe

    methods to seismic hazard assessment in France. This study differs from previous studies that have adopted A Probabilistic Approach to Seismic Hazard in Metropolitan France by Sylvie Marin, Jean-Philippe Avouac,* Marc Nicolas, and Antoine Schlupp Abstract In this study, we applied a probabilistic methodology to seismic

  16. Mathematical Modeling of Hepatitis C Prevalence Reduction with Antiviral Treatment Scale-Up in Persons Who Inject Drugs in Metropolitan Chicago

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

    Echevarria, Desarae; Gutfraind, Alexander; Boodram, Basmattee; Major, Marian; Del Valle, Sara; Cotler, Scott J.; Dahari, Harel

    2015-08-21

    New direct-acting antivirals (DAAs) provide an opportunity to combat hepatitis C virus (HCV) infection in persons who inject drugs (PWID). Here we use a mathematical model to predict the impact of a DAA-treatment scale-up on HCV prevalence among PWID and the estimated cost in metropolitan Chicago.

  17. East Coast Cool-Weather Storms in the New York Metropolitan Region Hunter College of the City University of New York, New York, New York

    E-Print Network [OSTI]

    Salmun, Haydee

    East Coast Cool-Weather Storms in the New York Metropolitan Region H. SALMUN Hunter College of the City University of New York, New York, New York A. MOLOD University of Maryland, Baltimore County of New York, New York, New York (Manuscript received 20 January 2009, in final form 3 May 2009) ABSTRACT

  18. SECONDARY MINERALS FOUND IN CORES DC2 Al AND DC2 TAKEN FROM THE GRANDE RONDE BASALT FORMATION, PASCO BASIN, WASHINGTON

    E-Print Network [OSTI]

    Teague, L.S.

    2010-01-01

    of secondary and primary mineral phases in basalts of theB. , 1975. Perched silia minerals on mordenite fibers. Jour.lt;. UC—70 I SECONDARY MINERALS FOUND IN CORES DC2 AI AND

  19. Discharging a DC bus capacitor of an electrical converter system

    DOE Patents [OSTI]

    Kajouke, Lateef A; Perisic, Milun; Ransom, Ray M

    2014-10-14

    A system and method of discharging a bus capacitor of a bidirectional matrix converter of a vehicle are presented here. The method begins by electrically shorting the AC interface of the converter after an AC energy source is disconnected from the AC interface. The method continues by arranging a plurality of switching elements of a second energy conversion module into a discharge configuration to establish an electrical current path from a first terminal of an isolation module, through an inductive element, and to a second terminal of the isolation module. The method also modulates a plurality of switching elements of a first energy conversion module, while maintaining the discharge configuration of the second energy conversion module, to at least partially discharge a DC bus capacitor.

  20. Thermal cum DC Camouflage in Duet with Undecorated Natural Materials

    E-Print Network [OSTI]

    Yang, Tian-Zhi; Gao, Dongliang; Wu, Linzhi; Li, Baowen; Thong, John T L; Qiu, Cheng-Wei

    2015-01-01

    To manipulate various types of physical signals in one single device has long captivated the attention of scientists and engineers. This however is very challenging, if not impossible, even for emerging metamaterials. Up to date, many artificial materials have been proposed, theoretically and (or) experimentally, for manipulating various waves/signals on a one-function-one-device basis. In this work, for the very first time, we employ undecorated natural materials to experimentally demonstrate a simultaneous camouflage for thermal current and electric dc current on the same device. It demonstrates how ingenuity can overcome the limitations of natural material systems without the need for complex decoration to impart inhomogeneous and (or) anisotropic properties, which was previously considered impossible to accomplish except by using metamaterials.

  1. FLUXCAP: A flux-coupled ac/dc magnetizing device

    E-Print Network [OSTI]

    Gopman, Daniel B; Kent, Andrew D

    2012-01-01

    We report on an instrument for applying ac and dc magnetic fields by capturing the flux from a rotating permanent magnet and projecting it between two adjustable pole pieces. This can be an alternative to standard electromagnets for experiments with small samples or in probe stations in which an applied magnetic field is needed locally, with advantages that include a compact form-factor, very low power requirements and dissipation as well as fast field sweep rates. This flux capture instrument (FLUXCAP) can produce fields from -400 to +400 mT, with field resolution less than 1 mT. It generates static magnetic fields as well as ramped fields, with ramping rates as high as 10 T/s. We demonstrate the use of this apparatus for studying the magnetotransport properties of spin-valve nanopillars, a nanoscale device that exhibits giant magnetoresistance.

  2. Superconducting DC and RF Properties of Ingot Niobium

    SciTech Connect (OSTI)

    Pashupati Dhakal, Gianluigi Ciovati, Peter Kneisel, Ganapati Rao Myneni

    2011-07-01

    The thermal conductivity, DC magnetization and penetration depth of large-grain niobium hollow cylindrical rods fabricated from ingots, manufactured by CBMM subjected to chemical and heat treatment were measured. The results confirm the influence of chemical and heat-treatment processes on the superconducting properties, with no significant dependence on the impurity concentrations in the original ingots. Furthermore, RF properties, such as the surface resistance and quench field of the niobium rods were measured using a TE{sub 011} cavity. The hollow niobium rod is the center conductor of this cavity, converting it to a coaxial cavity. The quench field is limited by the critical heat flux through the rods' cooling channel.

  3. Possible temperature control DC switch effect between two superconductors

    E-Print Network [OSTI]

    Tian De Cao

    2011-08-11

    The lifetime of an electron pair could not be unlimited long, on the basis of this, we suggest a model. The model means that the movements of charge carriers in a superconductor should have three forms: the single-electron movement, the single-pair movement, and the revolving around the mass center of two electrons in a pair. Thus the current in a superconductor has three possible parts. Similarly, there should be three possible effects in a SIS junction: the tunneling of single electron, the tunneling of single pair, and the pair-forming following the pair-breaking. This paper will discuss these problems and present a possible temperature control DC switch effect between two superconductors.

  4. Multi-terminal Subsystem Model Validation for Pacific DC Intertie

    SciTech Connect (OSTI)

    Yang, Bo; Huang, Zhenyu; Kosterev, Dmitry

    2008-07-20

    this paper proposes to validate dynamic model of Pacific DC Intertie with the concept of hybrid simulation by combing simulation with PMU measurements. The Playback function available in GE PSLF is adopted for hybrid simulation. It is demonstrated for the first time the feasibility of using Playback function on multi-terminal subsystem. Sensitivity studies are also presented as a result of common PMU measurement quality problem, ie, offset noise and time synchronization. Results indicate a good tolerance of PDCI model generally. It is recommended that requirements should apply to phasor measurements in model validation work to ensure better analysis. Key parameters are identified based on impact of value change to model behavior. Two events are employed for preliminary model validation with PMU measurements. Suggestions are made for PDCI model validation work in the future.

  5. Effect of DC voltage pulses on memristor behavior.

    SciTech Connect (OSTI)

    Evans, Brian R.

    2013-10-01

    Current knowledge of memristor behavior is limited to a few physical models of which little comprehensive data collection has taken place. The purpose of this research is to collect data in search of exploitable memristor behavior by designing and implementing tests on a HP Labs Rev2 Memristor Test Board. The results are then graphed in their optimal format for conceptualizing behavioral patterns. This series of experiments has concluded the existence of an additional memristor state affecting the behavior of memristors when pulsed with positively polarized DC voltages. This effect has been observed across multiple memristors and data sets. The following pages outline the process that led to the hypothetical existence and eventual proof of this additional state of memristor behavior.

  6. Auxiliary quasi-resonant dc tank electrical power converter

    DOE Patents [OSTI]

    Peng, Fang Z.

    2006-10-24

    An auxiliary quasi-resonant dc tank (AQRDCT) power converter with fast current charging, voltage balancing (or charging), and voltage clamping circuits is provided for achieving soft-switched power conversion. The present invention is an improvement of the invention taught in U.S. Pat. No. 6,111,770, herein incorporated by reference. The present invention provides faster current charging to the resonant inductor, thus minimizing delay time of the pulse width modulation (PWM) due to the soft-switching process. The new AQRDCT converter includes three tank capacitors or power supplies to achieve the faster current charging and minimize the soft-switching time delay. The new AQRDCT converter further includes a voltage balancing circuit to charge and discharge the three tank capacitors so that additional isolated power supplies from the utility line are not needed. A voltage clamping circuit is also included for clamping voltage surge due to the reverse recovery of diodes.

  7. Materials with low DC magnetic susceptibility for sensitive magnetic measurements R. Khatiwada,1, 2, 3,

    E-Print Network [OSTI]

    Materials with low DC magnetic susceptibility for sensitive magnetic measurements R. Khatiwada,1, 2 (Dated: July 1, 2015) Materials with very low DC magnetic susceptibility have many scientific a totally nonmagnetic material. This phrase in our case means after spatially averaging over macroscopic

  8. Nonlinear Dust Acoustic Waves, Shocks and Stationary Structures in a DC Glow Discharge Dusty Plasma

    E-Print Network [OSTI]

    Merlino, Robert L.

    Nonlinear Dust Acoustic Waves, Shocks and Stationary Structures in a DC Glow Discharge Dusty Plasma drifting dusty plasmas and temporal dust acoustic wave growth Phys. Plasmas 18, 113706 (2011) Modulational;Nonlinear Dust Acoustic Waves, Shocks and Stationary Structures in a DC Glow Discharge Dusty Plasma Robert L

  9. DC WRRC Report No. 178 AN EXPERIMENTAL STUDY OF THE OPTIMAL THICKNESS OF A SAND

    E-Print Network [OSTI]

    District of Columbia, University of the

    FILTER WATER QUALITY STRUCTURE July 1994 D.C. Water Resources Research Center University of the District OF THE OPTIMAL THICKNESS OF A SAND LAYER IN A SAND FILTER WATER QUALITY STRUCTURE Submitted by: Farshad Amini THICKNESS OF A SAND LAYER IN A SAND FILTER WATER QUALITY STRUCTURE July 1994 D.C. Water Resources Research

  10. EE443L: Intermediate Control Lab Lab2: Modeling a DC motor

    E-Print Network [OSTI]

    Wedeward, Kevin

    EE443L: Intermediate Control Lab Lab2: Modeling a DC motor Introduction: In this lab we will develop and validate a basic model of a permanent magnet DC motor (Yaskawa Electric, Mini-series, Minertia motor). The specific input/output relationship, which we are interested in determining, is the manner

  11. www.sciencemag.org/cgi/content/full/342/6155/224/DC1 Supplementary Materials for

    E-Print Network [OSTI]

    McEuen, Paul L.

    www.sciencemag.org/cgi/content/full/342/6155/224/DC1 Supplementary Materials for Imaging Atomic the following: (available at www.sciencemag.org/cgi/content/full/342/6155/224/DC1) Movies S1 to S5 #12;2 Materials and Methods Transmission electron microscopy (TEM )Imaging Transmission electron microscopy (TEM

  12. Aalborg Universitet Intelligent DC Microgrid Living Laboratories -A Chinese-Danish Project

    E-Print Network [OSTI]

    Vasquez, Juan Carlos

    Aalborg Universitet Intelligent DC Microgrid Living Laboratories - A Chinese-Danish Project Diaz Microgrid Living Laboratories - A Chinese-Danish Project. In IEEE ICDCM 2015. IEEE Press. General rights.aau.dk on: juli 07, 2015 #12;Intelligent DC Microgrid Living Laboratories - A Chinese-Danish Project Enrique

  13. A Scalable DC Microgrid Architecture for Rural Electrification in Emerging Regions

    E-Print Network [OSTI]

    Sanders, Seth

    A Scalable DC Microgrid Architecture for Rural Electrification in Emerging Regions P. Achintya the design and experimental validation of a scalable dc microgrid architecture for rural electrification. The microgrid design has been driven by field data collected from Kenya and India. The salient features

  14. Aalborg Universitet Distributed Consensus-Based Control of Multiple DC-Microgrids Clusters

    E-Print Network [OSTI]

    Vasquez, Juan Carlos

    Aalborg Universitet Distributed Consensus-Based Control of Multiple DC-Microgrids Clusters Shafiee). Distributed Consensus-Based Control of Multiple DC-Microgrids Clusters. In Proceedings of the 40th Annual.aau.dk on: juli 05, 2015 #12;This document downloaded from www.microgrids.et.aau.dk is a preprint

  15. Zeroing Transformer's DC Current in Resonant Converters with No Series Capacitors

    E-Print Network [OSTI]

    Gertsman, Student Member, IEEE and Sam Ben-Yaakov ,Fellow, IEEE Power Electronics Laboratory Department: www.ee.bgu.ac.il/~pel Abstract - DC current unbalance in the windings of a transformer may initiate the transformer's DC current to zero by correcting the asymmetry of the drive. This balancing control

  16. Aalborg Universitet Distributed Bus Signaling Control for a DC Charging Station with Multi Paralleled

    E-Print Network [OSTI]

    Vasquez, Juan Carlos

    been reported in order to verify the validity of proposed approach. Keywords--EV charging; flywheelAalborg Universitet Distributed Bus Signaling Control for a DC Charging Station with Multi., & Savaghebi, M. (2015). Distributed Bus Signaling Control for a DC Charging Station with Multi Paralleled

  17. Genomic Plasticity Enables Phenotypic Variation of Pseudomonas syringae pv. tomato DC3000

    E-Print Network [OSTI]

    Myers, Chris

    Genomic Plasticity Enables Phenotypic Variation of Pseudomonas syringae pv. tomato DC3000 Zhongmeng of a genomic anomaly in the region of 4.7 to 4.9 Mb of the Pseudomonas syringae pv. tomato (Pst) DC3000 genome in P. syringae. Citation: Bao Z, Stodghill PV, Myers CR, Lam H, Wei H-L, et al. (2014) Genomic

  18. The Data Center (DC) Genome project is a collaborative effort with Microsoft Research

    E-Print Network [OSTI]

    Amir, Yair

    DC Genome The Data Center (DC) Genome project is a collaborative effort with Microsoft Research the efficiency of data center operations and thus minimize their environmental impact. Data center energy about carbon footprints and climate change. Lack of visibility into the data center's operating

  19. DC Discharge Studies Using PIC-MCC Jeff Hammel and John Verboncoeur

    E-Print Network [OSTI]

    Wurtele, Jonathan

    DC Discharge Studies Using PIC-MCC Jeff Hammel and John Verboncoeur March 31, 2004 1 Introduction (PIC-MCC) method. PIC-MCC is used to accurately model kinetic processes present in DC discharges PIC. Cross-validation of PIC-MCC simulation and analysis may be used to improved both computational

  20. D.C. Community Comes Together in the Name of Sustainability, Affordability

    Broader source: Energy.gov [DOE]

    The New School for Design and Stevens Institute of Technology 2011 Solar Decathlon team is partnering with D.C. community members and Habitat for Humanity to build an energy efficient home that will be moved to the Deanwood neighborhood of Washington, D.C. following the competition.

  1. Reid Rosnick/DC/USEPA/US 10/25/2012 11:54 AM

    E-Print Network [OSTI]

    Management and Regulations Washington, DC phone: 202-343-9186 email: egidi.philip@epa.gov cell: 970 Washington, DC phone: 202-343-9186 email: egidi.philip@epa.gov cell: 970-209-2885 Reid Rosnick---10! ------------------------------------------------------------------------------------------------------ -------- Reid J. Rosnick Radiation Protection Division (6608J) U.S. Environmental Protection Agency 1200

  2. Parametric Study of PV Arc-Fault Generation Methods and Analysis of Conducted DC Spectrum

    E-Print Network [OSTI]

    Parametric Study of PV Arc-Fault Generation Methods and Analysis of Conducted DC Spectrum Jay photovoltaic (PV) direct current (DC) arc- fault detectors use the frequency content of the PV system to detect by different PV arcs in the field. In this investigation, we (a) discuss the differences in establishing

  3. Adaptive Selective Harmonic Minimization Based on ANNs for Cascade Multilevel Inverters With Varying DC Sources

    SciTech Connect (OSTI)

    Filho, Faete [ORNL; Maia, Helder Z [UFMS, Department of Electrical Engineering; Mateus, Tiago Henrique D [ORNL; Ozpineci, Burak [ORNL; Tolbert, Leon M [ORNL; Pinto, Joao Onofre P [ORNL

    2013-01-01

    A new approach for modulation of an 11-level cascade multilevel inverter using selective harmonic elimination is presented in this paper. The dc sources feeding the multilevel inverter are considered to be varying in time, and the switching angles are adapted to the dc source variation. This method uses genetic algorithms to obtain switching angles offline for different dc source values. Then, artificial neural networks are used to determine the switching angles that correspond to the real-time values of the dc sources for each phase. This implies that each one of the dc sources of this topology can have different values at any time, but the output fundamental voltage will stay constant and the harmonic content will still meet the specifications. The modulating switching angles are updated at each cycle of the output fundamental voltage. This paper gives details on the method in addition to simulation and experimental results.

  4. Narrating Washington, D.C. from the Margins: Urban Space and Cultural Identity in "Lost in the City" and "The Beautiful Things that Heaven Bears"

    E-Print Network [OSTI]

    Brown, Jessica M

    2011-01-01

    and Urban Space in Washington, D.C. Chicago: University ofBrookings Institution. Washington, D.C. Gillette, Howard Jr.of Urban Policy in Washington, D.C. (2006). Baltimore: The

  5. Proceedings of WindPower 95, AWEA, Washington, D.C., 1995. FATIGUE DAMAGE ESTIMATE COMPARISONS FOR

    E-Print Network [OSTI]

    Proceedings of WindPower 95, AWEA, Washington, D.C., 1995. FATIGUE DAMAGE ESTIMATE COMPARISONS," Proceedings of WindPower `95, AWEA, Washington, DC, March, 1995, pp. 177-186. * This work is supported

  6. Insertion sequence 5 at various upstream locations of the flhDC operon causes Escherichia coli hyper motility

    E-Print Network [OSTI]

    Wang, Jing

    2010-01-01

    locations of the flhDC operon causes Escherichia coli Hyperlocations of the PflhDC operon causes Escherichia coli Hyperof the transposing segment causes the formation of co-

  7. Wildlife Management Areas (Florida)

    Broader source: Energy.gov [DOE]

    Certain sites in Florida are designated as wildlife management areas, and construction and development is heavily restricted in these areas.

  8. 1620 IEEE TRANSACTIONS ON POWER DELIVERY, VOL. 27, NO. 3, JULY 2012 Hybrid AC/DC Transmission Expansion Planning

    E-Print Network [OSTI]

    Fu, Yong

    1620 IEEE TRANSACTIONS ON POWER DELIVERY, VOL. 27, NO. 3, JULY 2012 Hybrid AC/DC Transmission--This paper proposes a hybrid algorithm for the ac/dc transmission expansion planning (TEP). The stochastic simulation method would consider random outages of generating units and ac/dc transmission lines as well

  9. Urban growth pattern and sustainable development: a comparative study of municipalities in the Seoul Metropolitan Region 

    E-Print Network [OSTI]

    Paek, Seunggeun

    2006-10-30

    sustainability in 31 study areas for the years 1990, 1995 and 2000. Data for this study were drawn from the 1990-2000 censuses and local government publications. Statistical methods such as t-test, analysis of variance and factor analysis were used to answer...

  10. Area Activation 1 Running Head: AREA ACTIVATION

    E-Print Network [OSTI]

    Pomplun, Marc

    Area Activation 1 Running Head: AREA ACTIVATION Advancing Area Activation towards a General Model at Boston 100 Morrissey Boulevard Boston, MA 02125-3393 USA Phone: 617-287-6485 Fax: 617-287-6433 e. Without great effort, human observers clearly outperform every current artificial vision system in tasks

  11. DC switching regulated power supply for driving an inductive load

    DOE Patents [OSTI]

    Dyer, George R. (Norris, TN)

    1986-01-01

    A power supply for driving an inductive load current from a dc power supply hrough a regulator circuit including a bridge arrangement of diodes and switching transistors controlled by a servo controller which regulates switching in response to the load current to maintain a selected load current. First and second opposite legs of the bridge are formed by first and second parallel-connected transistor arrays, respectively, while the third and fourth legs of the bridge are formed by appropriately connected first and second parallel connected diode arrays, respectively. The regulator may be operated in three "stages" or modes: (1) For current runup in the load, both first and second transistor switch arrays are turned "on" and current is supplied to the load through both transistor arrays. (2) When load current reaches the desired level, the first switch is turned "off", and load current "flywheels" through the second switch array and the fourth leg diode array connecting the second switch array in series with the load. Current is maintained by alternating between modes 1 and 2 at a suitable duty cycle and switching rate set by the controller. (3) Rapid current rundown is accomplished by turning both switch arrays "off", allowing load current to be dumped back into the source through the third and fourth diode arrays connecting the source in series opposition with the load to recover energy from the inductive load. The three operating states are controlled automatically by the controller.

  12. A Very Low-Luminosity, Very Cool, DC White Dwarf

    E-Print Network [OSTI]

    Hugh Harris; Conard Dahn; Frederick Vrba; Arne Henden; James Liebert; Gary Schmidt; Neill Reid

    1999-06-03

    The star LHS 3250 is found to be a white dwarf at a distance of 30 pc. Its absolute magnitudes (M_V = 15.72; M_bol = 16.2) put it among the least-luminous white dwarfs known. Its optical spectrum shows no features, indicating it has a DC classification, and it shows no detectable polarization, indicating it does not have a very strong magnetic field. However, its broadband colors show it to have a unique spectral energy distribution, and it stands out from all other stars in BVI and other broadband photometric surveys. We discuss these properties, and conclude that LHS 3250 must be an extremely cool white dwarf with strong collision-induced absorption at red-infrared wavelengths from molecular hydrogen, in accord with models for very cool white dwarf atmospheres. If so, it is the first such star known, and the first star to provide observational evidence supporting these models. It suggests that other very cool white dwarfs, both halo white dwarfs and the oldest disk white dwarfs, also may have colors affected by similar absorption. The atmospheric composition of LHS 3250 is not known, and therefore its temperature is poorly determined. It may be a helium-core star with a mass 0.3-0.45 M_solar and a product of mass-transfer in a close binary system. However, until its temperature is better known, its mass and age remain uncertain.

  13. The correlational and causal investigation into the land use-transportation relationships: evidence from the Dallas-Fort Worth metropolitan area 

    E-Print Network [OSTI]

    Lee, Sangkug

    2006-10-30

    The role of land-use and related policies in reducing automobile dependence has been the subject of heated policy debate for over two decades. Previous research has shed light on the correlations between land-use and travel. ...

  14. Using a Regional Chemical Transport Model for the Analysis of Gaseous and Particulate Air Pollutants in the Mexico City Metropolitan Area 

    E-Print Network [OSTI]

    Ali, Sajjad Ghulam

    2012-02-14

    -Chem). The simulation period was March 2-7, 2006. Hourly species concentrations of O3, NOx, CO, SO2, PM10, and PM2.5 for the period were provided by the Automatic Air Quality Monitoring Network (labeled as RAMA). Preliminary evaluation showed GEOS-Chem and CMAQ being...

  15. Investigations of Atmospheric and Plant Physiological Effects along an Urban-To-Rural Gradient in the Houston Metropolitan Area Comparing 2011 to 2012 

    E-Print Network [OSTI]

    Gramann, Jonathan

    2014-09-02

    to rural trees. To study this, an urban0to-rural gradient was set up starting near downtown Houston, TX, and extending north approximately 90 km. Three weather stations were erected along this gradient to continually monitor weather. Photosynthesis rates...

  16. Investigation of surface inhomogeneity and estimation of the GOES skin temperature assimilation errors of the MM5 implied by the inhomogeneity over Houston metropolitan area 

    E-Print Network [OSTI]

    Han, Sang-Ok

    2005-11-01

    by about 25 %, thereby inducing the warmer (0.7 %) and drier (-1.0 %) PBL and the colder and moister PBL top induced by greater turbulent diffusivities. The 3-d application of the inhomogeneity parameterization indicated consistent results with the 1-d...

  17. The Residential Segregation of Same-Sex Partnered Households from Heterosexual Partnered Households: Metropolitan Statistical Areas in the U.S., 2010 

    E-Print Network [OSTI]

    Deng, Xiaodan

    2015-05-12

    to date. Figure 1, reproduced from Duncan and Duncan (1955), shows a geometrical def- inition of D as the maximum vertical dis- tance between the "segregation curve" and the curve Y = X. The segregation curve is the plot of the cumulative proportion... of whites versus the cumulative proportion of nonwhites, where the respective cumula- tions are obtained by taking the census tracts in order of increasing nonwhite per- centages. The Duncans provided a set of inade- quacies and precautionary comments...

  18. Evaluation of the volatility basis-set approach for the simulation of organic aerosol formation in the Mexico City metropolitan area

    E-Print Network [OSTI]

    Tsimpidi, A. P.

    New primary and secondary organic aerosol modules have been added to PMCAMx, a three dimensional chemical transport model (CTM), for use with the SAPRC99 chemistry mechanism based on recent smog chamber studies. The new ...

  19. The value trees contribute to residential property in the Austin metropolitan area: a factor in assessing the impact of oak wilt 

    E-Print Network [OSTI]

    Martin, Clay Whitney

    1986-01-01

    rt 0 nl 0 Ql 8 4 CQ 't5 8 8 Ql ) tt 8 A 'CI nl tn A 8 8 8 rt 0l kr IQ 0 0 Ql 0 8 In 8 ) '0 nl 0 Ql IQ M 8 8 K ) QQ D Ot I0 A Ot nQ 0 M Cl a ot QO OQ Ul P4 g R 0 0 0 IX 0 x IO M 4V QQ M r tel M rV 0 0 nt 0 Ifl rn to d... 0 IO 0 'IO IO m OI Ifl CO 'IO m r Ifl r nt tlt m ft tfr 0 0 0 0 Pl Pl fr PI tn 0' 8 0 tt 8 0 0 0 0 8 0 0 nl nl M tt Cl 0 IQ 0 OQ nn 0 34 Predictive Modeling Method A regression model was developed in order to predict tree value...

  20. DC Pro Software Tool Suite, Data Center Fact Sheet, Industrial Technologies Program

    SciTech Connect (OSTI)

    Not Available

    2009-04-01

    This fact sheet describes how DOE's Data Center Energy Profiler (DC Pro) Software Tool Suite and other resources can help U.S. companies identify ways to improve the efficiency of their data centers.

  1. DC-OPF Formulation with Price-Sensitive Demand Bids Junjie Sun and Leigh Tesfatsion

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    DC-OPF Formulation with Price-Sensitive Demand Bids Junjie Sun and Leigh Tesfatsion Last Revised (TNCS) subject to various transmission constraints. As explained at length in Sun and Tesfation (2007

  2. ReHABit : claiming endangered structures in Washington DC to rethink subsidized housing

    E-Print Network [OSTI]

    Fowlkes, Catherine Kuhnle

    2007-01-01

    There is an affordable housing crisis today in Washington D.C. that is the result of a uniquely complicated history of a capital city and a current economic boom. This thesis responds to that crisis by proposing a new ...

  3. Dielectric relaxation and conduction in SrTiO{sub 3} thin films under dc bias

    SciTech Connect (OSTI)

    Ang, Chen; Yu, Zhi; Cross, L. E.; Guo, Ruyan; Bhalla, A. S.

    2001-08-06

    The dielectric and conduction behavior of SrTiO{sub 3} thin films deposited on a SrTiO{sub 3} single-crystal substrate is studied. Without dc bias, an obvious dielectric 'defect mode' in the dielectric loss is observed in the temperature range of {approx}100--200 K; however, no noticeable corresponding dielectric constant peak is observed. By applying a high dc bias ({>=}40 kV/cm), a dielectric constant peak with frequency dispersion appears in the same temperature range, the dielectric loss is increased, and simultaneously high dc conduction is observed. The induced dielectric constant peak is related to dc conduction and attributed to the coupling effect of the mobile carriers with the dielectric defect mode. {copyright} 2001 American Institute of Physics.

  4. DC power transmission from the Leningradskaya Nuclear Power Plant to Vyborg

    SciTech Connect (OSTI)

    Koshcheev, L. A.; Shul'ginov, N. G.

    2011-05-15

    DC power transmission from the Leningradskaya Nuclear Power Plant (LAES) to city of Vyborg is proposed. This will provide a comprehensive solution to several important problems in the development and control of the unified power system (EES) of Russia.

  5. New AC-DC Power Factor Correction Architecture Suitable for High Frequency Operation

    E-Print Network [OSTI]

    Lim, Seungbum

    This paper presents a novel ac-dc power factor correction (PFC) power conversion architecture for single-phase grid interface. The proposed architecture has significant advantages for achieving high efficiency, good power ...

  6. Vehicle Technologies Office Merit Review 2014: High Performance DC Bus Film Capacitor

    Office of Energy Efficiency and Renewable Energy (EERE)

    Presentation given by GE Global Research at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about high performance DC bus...

  7. Vehicle Technologies Office Merit Review 2015: High Performance DC Bus Film Capacitor

    Office of Energy Efficiency and Renewable Energy (EERE)

    Presentation given by GE Global Research at 2015 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about high performance DC bus...

  8. Multilevel-Dc-Bus Inverter For Providing Sinusoidal And Pwm Electrical Machine Voltages

    DOE Patents [OSTI]

    Su, Gui-Jia [Knoxville, TN

    2005-11-29

    A circuit for controlling an ac machine comprises a full bridge network of commutation switches which are connected to supply current for a corresponding voltage phase to the stator windings, a plurality of diodes, each in parallel connection to a respective one of the commutation switches, a plurality of dc source connections providing a multi-level dc bus for the full bridge network of commutation switches to produce sinusoidal voltages or PWM signals, and a controller connected for control of said dc source connections and said full bridge network of commutation switches to output substantially sinusoidal voltages to the stator windings. With the invention, the number of semiconductor switches is reduced to m+3 for a multi-level dc bus having m levels. A method of machine control is also disclosed.

  9. Development and evaluation of an implantable chronic DC stimulation and measurement probe for nerve regeneration studies 

    E-Print Network [OSTI]

    Macha, Douglas Bryan

    1995-01-01

    isotropic. The actual field strength or current density induced by the applied current is seldom directly measured in-vivo. This research seeks to evaluate the design of an implantable DC stimulator capable of delivering a constant, stable and measurable...

  10. DC Discharge Studies Using PIC-MCC: PIC Simulations Jeff Hammel & John Verboncoeur

    E-Print Network [OSTI]

    Wurtele, Jonathan

    DC Discharge Studies Using PIC-MCC: PIC Simulations Jeff Hammel & John Verboncoeur Electronics PIC Simulations (XPDP1) XPDP1, a 1D-3V PIC-MCC code (Verboncoeur et al., 1993), was used to simu- late

  11. Modeling of D/C motor driven synthetic jet acutators for flow separation control 

    E-Print Network [OSTI]

    Balasubramanian, Ashwin Kumar

    2004-11-15

    The objective of this research is to present a theoretical study of the compressibility effects on the performance of an electric D/C motor driven synthetic jet actuator for flow separation control. Hot wire anemometer experiments were conducted...

  12. Low speed control of a DC motor driving a mechanical system with fuzzy adaptive compensation 

    E-Print Network [OSTI]

    Hyun, Dongyoon

    1997-01-01

    A fuzzy adaptive feedforward control scheme in conjunction with classical feedback control is proposed for the low speed control of DC motors driving mechanical systems in the presence of friction. In the fuzzy adaptive scheme, a fuzzy logic based...

  13. Grid Modernization Highlighted in Washington DC in September with the Solar Decathlon

    Broader source: Energy.gov [DOE]

    Smart Grid is on display at the U.S. Department of Energy 2011 Solar Decathlon, held September 23 through October 2 on the National Mall, West Potomac Park, Washington, DC.  The decathlon...

  14. Assessment of Soil Erosion at a DC Park Facility Spring Valley Park

    E-Print Network [OSTI]

    District of Columbia, University of the

    park for the pilot assessment study. Failure to control erosion caused by the runoff of rain water can of Columbia Date: May 2005 Prepared for the DC Water Resources Research Institute Funded by USGS through

  15. Washington, D.C. and Indiana: Allison Hybrid Technology Achieves...

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

    technology has prospered in the neighboring areas of Philadelphia (449 city buses), Baltimore (308), and Boston (25) as part of the 5,600 hybrid systems delivered worldwide. The...

  16. Gaseous and particulate emissions from a DC arc melter

    SciTech Connect (OSTI)

    Overcamp, T.J.; Speer, M.P.; Griner, S.J.; Cash, D.M. [Clemson Univ., Anderson, SC (United States)

    1997-12-31

    This paper presents the results of the gaseous and particulate emissions from eight experimental tests of a DC arc melter to treat simulated Savannah River soils contaminated with metals, surrogates for radionuclides, and organic debris. The gaseous analyses reported on the concentrations of oxygen, hydrogen, carbon monoxide, carbon dioxide, hydrogen, methane, nitric oxide, and nitrogen dioxide. The carbon dioxide concentration was high for all runs. For the runs with an air purge, the carbon monoxide concentration ranged up to 10% in the runs with the debris and 2% in the runs without debris. Hydrogen ranged up to 5% by with debris and up to 1% without debris. The methane concentration ranged up to 7,000 ppm{sub v} for the runs with debris and 2,000 ppm for the runs without debris. With a nitrogen purge, oxygen concentrations were less than 1%. The carbon dioxide concentrations ranged from 3 to 15%. Much of this carbon dioxide was probably due the carbonates added to the feed material. The carbon monoxide concentration ranged up to 20% with the debris and 7% without debris. Hydrogen was above 6% in with debris and up to 6% without debris. The methane concentration ranged up to 10,000 ppm{sub v} with debris and 4,000 ppm{sub v} without debris. The particulate concentrations exiting ranged from 32 to 145 g/m{sup 3}. From the chemical analyses, the primary elements were silicon and calcium. The CHN analyses indicated that carbon, probably as carbonates, are an additional component in the particulate matter. The estimated emissions were at a level of 3% or less for cerium, up to 7% for nickel, and 11 to 30% for cesium.

  17. Abstract--A novel control scheme for improving the power efficiency of low-voltage DC-DC converters for battery-powered,

    E-Print Network [OSTI]

    Rincon-Mora, Gabriel A.

    -DC converters for battery-powered, portable applications is presented. In such applications, light- load efficiency is crucial for extending battery life, since mobile devices operate in stand-by mode for most-of-the-art techniques. As a result, the battery life in a typical DSP microprocessor application is improved by 7

  18. Use of Management and Operating Contractor and National Laboratory Employees for Services in the D.C. Area

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

    1997-03-05

    This Notice provides requirements for Headquarters use of employees from Management and Operating (M&O) contractors and National Laboratories and establishes limitations on payments to those employees whose assignments to Headquarters exceed 365 days.

  19. Optimizing Energy Savings from Direct-DC in U.S. Residential Buildings

    SciTech Connect (OSTI)

    Garbesi, Karina; Vossos, Vagelis; Sanstad, Alan; Burch, Gabriel

    2011-10-13

    An increasing number of energy efficient appliances operate on direct current (DC) internally, offering the potential to use DC from renewable energy systems directly and avoiding the losses inherent in converting power to alternating current (AC) and back. This paper investigates that potential for net-metered residences with on-site photovoltaics (PV) by modeling the net power draw of the ‘direct-DC house’ with respect to today’s typical configuration, assuming identical DC-internal loads. Power draws were modeled for houses in 14 U.S. cities, using hourly, simulated PV-system output and residential loads. The latter were adjusted to reflect a 33% load reduction, representative of the most efficient DC-internal technology, based on an analysis of 32 electricity end-uses. The model tested the effect of climate, electric vehicle (EV) loads, electricity storage, and load shifting on electricity savings; a sensitivity analysis was conducted to determine how future changes in the efficiencies of power system components might affect savings potential. Based on this work, we estimate that net-metered PV residences could save 5% of their total electricity load for houses without storage and 14% for houses with storage. Based on residential PV penetration projections for year 2035 obtained from the National Energy Modeling System (2.7% for the reference case and 11.2% for the extended policy case), direct-DC could save the nation 10 trillion Btu (without storage) or 40 trillion Btu (with storage). Shifting the cooling load by two hours earlier in the day (pre-cooling) has negligible benefits for energy savings. Direct-DC provides no energy savings benefits for EV charging, to the extent that charging occurs at night. However, if charging occurred during the day, for example with employees charging while at work, the benefits would be large. Direct-DC energy savings are sensitive to power system and appliance conversion efficiencies but are not significantly influenced by climate. While direct-DC for residential applications will most likely arise as a spin-off of developments in the commercial sector—because of lower barriers to market entry and larger energy benefits resulting from the higher coincidence between load and insolation—this paper demonstrates that there are substantial benefits in the residential sector as well. Among residential applications, space cooling derives the largest energy savings from being delivered by a direct-DC system. It is the largest load for the average residence on a national basis and is particularly so in high-load regions. It is also the load with highest solar coincidence.

  20. SUBMITTED TO: THE D.C. WATER RESOURCES RESEARCH CENTER

    E-Print Network [OSTI]

    District of Columbia, University of the

    that the hydraulic connection is negligible, but this has been based solely on the intermediate to low permeability are frequently noted in wells drilled through the Patapsco in the immediate vicinity of the field site (Schnabel. Proposed construction along New York Avenue and recently drilled water-supply wells in the area may also

  1. UNITED STATES ENVIRONMENTAL PROTECTION AGENCY WASHINGTON, D.C. 20460

    E-Print Network [OSTI]

    Pilot Plant (WIPP)on March 26,2004. In addition, key technical staff fiom DOE and its contractors presented an overviewof the CRA-with an emphasis on areas of change sinceEPA's initial WIPP certification this meeting, as well as the full CRA contents, have been placed in EPA's docketsand made availableon our WIPP

  2. April3-5,2008 WashingtonDC

    E-Print Network [OSTI]

    Bhattacharya, Debashish

    of Life? Workshop Summary 3 Emerging research areas addressed by the workshop: 3 Consider the fundamental to understand speciation, biodiversity, and biogeography. 12 Summary and Recommendations 14 Final Discussion 14 WorkshopReport WheretoNextwith TheTreeofLife? #12;Contents Workshop Report - Where to Next with The Tree

  3. UNITED STATES ENVIRONMENTAL PROTECTION AGENCY WASHINGTON D.C. 20460

    E-Print Network [OSTI]

    to update the environmental protection standards for uranium mining because current regulations, promulgated monitoring networks at ISL uranium mines, including wells within the production area to compare post- and pre preliminary framework of considerations applicable to groundwater monitoring at ISL uranium mines

  4. One-dimensional hybrid simulation of the dc/RF combined driven capacitively coupled CF{sub 4} plasmas

    SciTech Connect (OSTI)

    Wang Shuai [School of Science, Northeastern University, Shenyang 110891 (China); Xu Xiang; Wang Younian [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China)

    2012-11-15

    We developed a one-dimensional hybrid model to simulate the dc/RF combined driven capacitively coupled plasma for CF{sub 4} discharges. The numerical results show the influence of the dc source on the plasma density distribution, ion energy distributions (IEDs), and ion angle distributions (IADs) on both RF and dc electrodes. The increase of dc voltage impels more ions with high energy to the electrode applied to the dc source, which makes the IEDs at the dc electrode shift toward higher energy and the peaks in IADs shift toward the small angle region. At the same time, it also decreases ion-energy at the RF electrode and enlarges the ion-angles which strike the RF electrode.

  5. Plasma and Ion Sources in Large Area Coatings: A Review

    SciTech Connect (OSTI)

    Anders, Andre

    2005-02-28

    Efficient deposition of high-quality coatings often requires controlled application of excited or ionized particles. These particles are either condensing (film-forming) or assisting by providing energy and momentum to the film growth process, resulting in densification, sputtering/etching, modification of stress, roughness, texture, etc. In this review, the technical means are surveyed enabling large area application of ions and plasmas, with ion energies ranging from a few eV to a few keV. Both semiconductortype large area (single wafer or batch processing with {approx} 1000 cm{sup 2}) and in-line web and glass-coating-type large area (> 10{sup 7} m{sup 2} annually) are considered. Characteristics and differences between plasma and ion sources are explained. The latter include gridded and gridless sources. Many examples are given, including sources based on DC, RF, and microwave discharges, some with special geometries like hollow cathodes and E x B configurations.

  6. Performance Study of K2CsSb Photocathode inside a DC High Voltage Gun

    SciTech Connect (OSTI)

    T. Rao, J. Smedley, J.M. Grames, R. Mammei, J.L. McCarter, M. Poelker, R. Suleiman

    2011-03-01

    In the past decade, there has been considerable interest in the generation of tens of mA average current in a photoinjector. Until recently, GaAs:Cs cathodes and K2CsSb cathodes have been tested successfully in DC and RF injectors respectively for this application. Our goal is to test the GaAs:Cs in RF injector and the K2CsSb cathode in the DC gun in order to widen our choices. Since the multialkali cathode is a compound with uniform stochiometry over its entire thickness, we anticipate that the life time issues seen in GaAs:Cs due surface damage by ion bombardment would be minimized with this material. Hence successful operation of the K2CsSb cathode in DC gun could lead to a relatively robust electron source capable of delivering ampere level currents. In order to test the performance of K2CsSb cathode in a DC gun, we have designed and built a load lock system that would allow the fabrication of the cathode at BNL and its testing at JLab. In this paper, we will present the design of the load-lock system, cathode fabrication, and the cathode performance in the preparation chamber and in the DC gun.

  7. Performance Study of K2CsSb Photocathode Inside a DC High Voltage Gun

    SciTech Connect (OSTI)

    McCarter J. L.; Rao T.; Smedley, J.; Grames, J.; Mammei, R.; Poelker, M.; Suleiman, R.

    2011-09-01

    In the past decade, there has been considerable interest in the generation of tens of mA average current in a photoinjector. Until recently, GaAs:Cs cathodes and K{sub 2}CsSb cathodes have been tested successfully in DC and RF injectors respectively for this application. Our goal is to test the K{sub 2}CsSb photocathode inside a DC gun. Since the multialkali cathode is a compound with constant characteristics over its entire thickness, we anticipate that the lifetime issues seen in GaAs:Cs due to surface damage by ion bombardment would be minimized. Hence successful operation of the K{sub 2}CsSb cathode in a DC gun could lead to a relatively robust electron source capable of delivering ampere level currents. In order to test the performance of a K{sub 2}CsSb cathode in a DC gun, we have designed and built a load lock system that allows the fabrication of the cathode at Brookhaven National Lab (BNL) and its testing at Jefferson Lab (JLab). In this paper, we will present the performance of the K{sub 2}CsSb photocathode in the preparation chamber and in the DC gun.

  8. Unit 51 - GIS Application Areas

    E-Print Network [OSTI]

    Unit 51, CC in GIS; Cowen, David; Ferguson, Warren

    1990-01-01

    51 - GIS APPLICATION AREAS UNIT 51 - GIS APPLICATION AREAS1990 Page 1 Unit 51 - GIS Application Areas Computers inyour students. UNIT 51 - GIS APPLICATION AREAS Compiled with

  9. Please cite this article in press as: Buyantuyev, A., et al., Multiscale analysis of the urbanization pattern of the Phoenix metropolitan landscape of USA: Time, space and thematic resolution. Landscape Urban Plan. (2009), doi:10.1016/j.landurbplan.2009.1

    E-Print Network [OSTI]

    Wu, Jianguo "Jingle"

    2009-01-01

    of the urbanization pattern of the Phoenix metropolitan landscape of USA: Time, space and thematic resolution of the urbanization pattern of the Phoenix metropolitan landscape of USA: Time, space and thematic resolution of land-cover dynam- ics. Quantification of land-use/land-cover change in Phoenix, Arizona during

  10. Dynamic magnetization states of a spin valve in the presence of dc and ac currents: Synchronization, modification, and chaos

    E-Print Network [OSTI]

    Li, Charles

    Dynamic magnetization states of a spin valve in the presence of dc and ac currents: Synchronization and numerical calculations of dynamic magnetization states of a spin valve in the presence of dc and ac currents are expected to appear. In this paper, we consider a simple spin valve as a model system to study the problem

  11. Abstract--Environmentally friendly technologies such as photovoltaics and fuel cells are DC sources. In the current power

    E-Print Network [OSTI]

    Tolbert, Leon M.

    Abstract--Environmentally friendly technologies such as photovoltaics and fuel cells are DC sources in pollution [1]. The most well-known green technologies include photovoltaics and wind turbines. Although fuel, fuel cells and photovoltaics, produce direct current (DC). Currently, power system infrastructures

  12. Superconductivity for Electric Systems Annual Peer Review Washington, DC July 27-29, 2004. OAK RIDGE NATIONAL LABORATORY

    E-Print Network [OSTI]

    Superconductivity for Electric Systems Annual Peer Review Washington, DC ­ July 27-29, 2004. OAK RIDGE NATIONAL LABORATORY U. S. DEPARTMENT OF ENERGY American Superconductor Corporation U. Schoop, M. W&D support #12;Superconductivity for Electric Systems Annual Peer Review Washington, DC ­ July 27-29, 2004

  13. Optimal Demand Response in DC Distribution Networks Hamed Mohsenian-Rad, Member, IEEE and Ali Davoudi, Member, IEEE

    E-Print Network [OSTI]

    Mohsenian-Rad, Hamed

    Optimal Demand Response in DC Distribution Networks Hamed Mohsenian-Rad, Member, IEEE and Ali first present an optimization-based foundation for demand response in DC distribution networks. Then, we devise a pricing mechanism to enforce optimal demand response in a distributed fashion. Simulation

  14. Jaworski Liquid metal PSI science and component development FESAC Meeting, Washington DC July 8-10, 2014

    E-Print Network [OSTI]

    Jaworski ­ Liquid metal PSI science and component development ­ FESAC Meeting, Washington DC ­ July 8-10, 2014 Liquid metal plasma-material interaction science and component development MA Jaworski on behalf of the Liquid Metal Plasma-Facing Component working group FESAC Meeting, Washington DC ­ July 8

  15. THE GREATER TORONTO AREA TRAVEL DEMAND MODELLING SYSTEM

    E-Print Network [OSTI]

    Toronto, University of

    by the then Metropolitan Toronto Planning Department and the Ministry of Transportation, Ontario. Support and advice Post-Run Report 32 4.5 Base 1996 Files for Use in Post-Run Utilities 33 #12;GTA Travel Demand Modelling

  16. DC WRRC Report No. 127 GROUND WATER RESOURCE ASSESSMENT STUDY FOR

    E-Print Network [OSTI]

    District of Columbia, University of the

    project: James Collier - DCRA Water Resources Management Division Mohsin Siddique - DCRA Water Quality DRILLING AND FIELD OPERATIONS REPORT FOR THE GROUP B WELLS D.C. WATER RESOURCES RESEARCH CENTER University: Well Drilling and Field Operations Report - Group B Wells DATE: July 1993 AUTHOR(S): Jutta Schneider

  17. Strontium Titanate DC Electric Field Switchable and Tunable Bulk Acoustic Wave Solidly Mounted Resonator

    E-Print Network [OSTI]

    York, Robert A.

    Strontium Titanate DC Electric Field Switchable and Tunable Bulk Acoustic Wave Solidly Mounted.3 0/0. Index Terms - Acoustic resonators, bulk acoustic wave devices, delay filters, ferroelectric,4] that can be exploited to realize voltage-switchable bulk-acoustic wave (BAW) devices for RF applications [5

  18. dc electric field tunable bulk acoustic wave solidly mounted resonator using SrTiO3

    E-Print Network [OSTI]

    York, Robert A.

    dc electric field tunable bulk acoustic wave solidly mounted resonator using SrTiO3 G. N. SaddikTiO3 solidly mounted bulk acoustic wave resonator has been designed, fabricated, and tested of Physics. DOI: 10.1063/1.2759464 Thin film bulk acoustic wave resonators FBARs have been in use by research

  19. SEC Training -Risk Management Washington, D.C., February 27, 2006

    E-Print Network [OSTI]

    Frey, Robert J.

    SEC Training - Risk Management Washington, D.C., February 27, 2006 Robert J. Frey, Ph.D. Director Managers, pp. IV-3 to IV-9 · Market Risk · Liquidity Risk · Credit Risk · Leverage Risk · Operational Risk · Valuation Risk 10 #12;Monitoring Risk Source: MFA's 2005 Sound Practices for Hedge Fund Managers, pp. AI-1

  20. DC 20 a,f,g AXISYMMETRIC INSTABILITY IN A NONCIRCDLAR TOKAMAK

    E-Print Network [OSTI]

    Sprott, Julien Clinton

    DC 20 a,f,g AXISYMMETRIC INSTABILITY IN A NONCIRCDLAR TOKAMAK: EXPERIMENT AND THEORY BY B, a tokamak with a four-null poloidal divertor. Experi mental results are clo sely compared with stability indicates #12;AXISYMMETRIC INSTABILITY IN A NONCIRCULAR TOKAMAK: EXPERIMENT AND THEORY by B. Lipschultz

  1. Design and Verification of Smart and Scalable DC Microgrids for Emerging Regions

    E-Print Network [OSTI]

    Sanders, Seth

    in grid power: A droop voltage power-sharing scheme is implemented, wherein the microgrid voltage droops transmission and distributed storage. Since the PMUs will be able to communicate digitally to the power stationDesign and Verification of Smart and Scalable DC Microgrids for Emerging Regions P. Achintya

  2. February 2012 Did you know that the Navy Memorial in Washington D.C. is

    E-Print Network [OSTI]

    February 2012 004/12 Did you know that the Navy Memorial in Washington D.C. is is honoring all://navymemorial.org/yotc/Home/tabid/224/Default.aspx Challenge to all: in the Navy Log. This is your free opportunity to be entered and activities occurring across our Navy to support YOTC through this Facebook page: http

  3. November 2002 15th TOFE, Washington, D.C. 1 Thermal Behavior and Operating

    E-Print Network [OSTI]

    Raffray, A. René

    - Enthalpy transfer - Condensation (latent heat transfer) in the case of gas with boiling point and melting of condensation. - Latent heats have only a small effect on the overall energy transfer which is governed, Washington, D.C. 7 Radiation Heat Transfer from Chamber Wall · Simple estimate given by: Where: Tw

  4. IEEE Photovoltaic Specialists Conference Washington, D.C., May 13-17, 1996

    E-Print Network [OSTI]

    Perez, Richard R.

    IEEE Photovoltaic Specialists Conference Washington, D.C., May 13-17, 1996 NICHE MARKETS FOR GRID-CONNECTED PHOTOVOLTAICS Howard Wenger Pacific Energy Group Walnut Creek, CA, USA Christy Herig & Roger Taylor National- Sited Photovoltaics (CSPV) in the United States. 1 The intent is to demonstrate markets that are cost

  5. IMPLEMENTATION OF A DC BUMP AT THE STORAGE RING INJECTION STRAIGHT SECTION

    SciTech Connect (OSTI)

    Wang, G.M.; Shaftan, T.; Kramer, S.K.; Fliller, R.; Guo, W.; Heese, R.; Yu, L.H.; Parker, B.; Willeke, F.J.

    2011-03-28

    The NSLS II beam injection works with a DC septum, a pulsed septum and four fast kicker magnets. The kicker power supplies each produce a two revolution period pulsed field, 5.2 {micro}s half sine waveform, using {approx}5kA drive voltage. The corresponding close orbit bump amplitude is {approx}15mm. It is desired that the bump is transparent to the users for top-off injection. However, high voltage and short pulse power supplies have challenges to maintain pulse-to-pulse stability and magnet-to-magnet reproducibility. To minimize these issues, we propose implementing a DC local bump on top of the fast bump to reduce the fast kicker strength by a factor of 2/3. This bump uses two storage ring corrector magnets plus one additional magnet at the septum to create a local bump. Additionally, these magnets could provide a DC bump to simulate the septum position effects on the store beam lifetime. This paper presents the detail design of this DC injection bump and related beam dynamics.

  6. Diagnostics of ballistic electrons in a dc/rf hybrid capacitively coupled discharge

    E-Print Network [OSTI]

    Economou, Demetre J.

    Diagnostics of ballistic electrons in a dc/rf hybrid capacitively coupled discharge Lin Xu,1,a Lee the substrate electrode or the semiconduc- tor wafer. Watanabe et al.7 superimposed a high energy electron beam. Economou,2,c and Vincent M. Donnelly2,d 1 Tokyo Electron America, Austin, Texas 78741, USA 2 Department

  7. The ecological causes of evolution Andrew D.C. MacColl

    E-Print Network [OSTI]

    Obbard, Darren

    The ecological causes of evolution Andrew D.C. MacColl School of Biology, University of Nottingham, but it is not the cause of evolution. The cause of natural selection and, therefore, of adaptive evolution, is any of species and their response to environmental change. What causes natural selection? When one contemplates

  8. 1. PMU Based RAS for a Hybrid AC/DC System 1.1. Project Team

    E-Print Network [OSTI]

    Li, Husheng

    1. PMU Based RAS for a Hybrid AC/DC System 1.1. Project Team Primary Thrust: Modeling Secondary to be detected more quickly allowing less severe action. This effort focuses on PMU driven response-based RAS from PMU units. The project goals break down into three efforts: · Investigating the possibility

  9. Living downtown in Washington, D.C. : defining residential community in the city center

    E-Print Network [OSTI]

    Allen, Robin P. (Robin Porter)

    1995-01-01

    In Washington D.C., as in many other American cities, a significant section of the downtown is distinguished by boarded-up buildings and vacant lots. In spite of traces of a city plan that could organize and accommodate a ...

  10. Chapter 6.7 Edwards Auto 306 DC and RF Sputter Coater

    E-Print Network [OSTI]

    Healy, Kevin Edward

    mechanical pump is installed for rough pumping and one turbo pump for fine pumping. A crystal monitor on it to assure good seal of the chamber. 4.2 Control Panel: Allows you to vent and pump the chamber. 4.3 DC power over 30 years of your career. 5.4 Wear light blue vacuum gloves when you handle components

  11. CTMCONTROL: Addressing the MC/DC Objective for Safety-Critical Automotive Software

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , testing, MC/DC, ISO 26262, AUTOSAR. 1 INTRODUCTION ISO 26262 [1] is one of the main points of reference-critical software. AUTOSAR, since release 4.0 in 2011 [2], refers to the demands of ISO 26262 for safety A (most critical) software for airborne systems before they can receive an official approval/certification

  12. DC Discharge Studies Using PIC-MCC: Unmagnetized Glow Discharge Theory Jeff Hammel & John Verboncoeur

    E-Print Network [OSTI]

    Wurtele, Jonathan

    DC Discharge Studies Using PIC-MCC: Unmagnetized Glow Discharge Theory Jeff Hammel & John Wiley and Sons, Inc., New York, 1994. · Leonard B. Loeb. Fundamental Processes of Electrical Discharge. Verboncoeur, A. B. Langdon, and N. T. Gladd. An object-oriented electromagnetic pic code. Computer Physics

  13. Bi-directional Current-fed Medium Frequency Transformer Isolated AC-DC Converter 

    E-Print Network [OSTI]

    Essakiappan, Somasundaram

    2011-08-08

    demand for power converters with bi-directional capabilities. The objective of this thesis is to develop a high power quality, bi-directional AC-DC power converter that is a solution to the aforementioned problems. This thesis studies an existing topology...

  14. New World Monkeys Alfred L Rosenberger, Smithsonian Institution, Washington DC, USA

    E-Print Network [OSTI]

    Rosenberger, Alfred H.

    New World Monkeys Alfred L Rosenberger, Smithsonian Institution, Washington DC, USA Walter Carl Hartwig,Touro University College of Osteopathic Medicine, Vallejo, California, USA New World monkeys are the living (nonhuman) primates of South and Central America. Introduction New World monkeys are distributed

  15. New Global Alliance Formed to Undercut Illegal WASHINGTON, DC, May 26, 2010 (ENS) -To reduce trade

    E-Print Network [OSTI]

    New Global Alliance Formed to Undercut Illegal Logging WASHINGTON, DC, May 26, 2010 (ENS with a stake in promoting legal forest product supply chains. The Forest Legality Alliance aims to achieve products and increasing the capacity of suppliers to deliver legal wood and paper. "The Alliance seeks

  16. Joint two-dimensional DC resistivity and seismic travel time inversion with cross-gradients constraints

    E-Print Network [OSTI]

    Meju, Max

    Joint two-dimensional DC resistivity and seismic travel time inversion with cross to evaluate the structural features common to both methods. The cross-gradients function is incorporated method. The resultant iterative two-dimensional (2-D) joint inversion scheme is successfully applied

  17. Operation of the DC current transformer intensity monitors at FNAL during run II

    SciTech Connect (OSTI)

    Crisp, J.; Fellenz, B.; Heikkinen, D.; Ibrahim, M.A.; Meyer, T.; Vogel, G.; /Fermilab

    2012-01-01

    Circulating beam intensity measurements at FNAL are provided by five DC current transformers (DCCT), one per machine. With the exception of the DCCT in the Recycler, all DCCT systems were designed and built at FNAL. This paper presents an overview of both DCCT systems, including the sensor, the electronics, and the front-end instrumentation software, as well as their performance during Run II.

  18. Control of a Fuel-Cell Powered DC Electric Vehicle Motor Federico Zenith

    E-Print Network [OSTI]

    Skogestad, Sigurd

    Control of a Fuel-Cell Powered DC Electric Vehicle Motor Federico Zenith Sigurd Skogestad Introduction Research in fuel cells receives currently a lot of interest. Fuel cells can be used, in different. However, the dynamics of fuel cells has received comparatively less attention. Control of fuel cells

  19. Navier-Stokes on Black Hole Horizons and DC Thermoelectric Conductivity

    E-Print Network [OSTI]

    Aristomenis Donos; Jerome P. Gauntlett

    2015-11-12

    Within the context of the AdS/CFT correspondence we show that the DC thermoelectric conductivity can be obtained by solving the linearised, time-independent and forced Navier-Stokes equations on the black hole horizon for an incompressible and charged fluid.

  20. Navier-Stokes on Black Hole Horizons and DC Thermoelectric Conductivity

    E-Print Network [OSTI]

    Donos, Aristomenis

    2015-01-01

    We consider a general class of black hole solutions of Einstein-Maxwell theory which are holographically dual to CFTs with spatially dependent sources. We show that an averaged DC thermoelectric conductivity matrix can be obtained by solving the forced, linearised, time-independent Navier-Stokes equations on the black hole horizon for an incompressible and charged fluid.

  1. Site Monitoring Area Maps

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

    and roads The spatial location and boundaries for each Site shown on the Site Monitoring Area maps originate from activities conducted under the Compliance Order on Consent with...

  2. Geothermal br Resource br Area Geothermal br Resource br Area...

    Open Energy Info (EERE)

    Area Central Nevada Seismic Zone Pull Apart in Strike Slip Fault Zone Ordovician shale quartzite MW K Blue Mountain Geothermal Area Blue Mountain Geothermal Area Northwest...

  3. Metropolitan Transportation Plan 2035 

    E-Print Network [OSTI]

    Tyler Area Metropolitan Planning Organization

    2009-12-04

    and vertical concentration distributions with the assumptions of continuous emissions, conservation of mass, steady-state conditions, and normal distribution of crosswind and vertical concentrations of pollutants (Cooper and Alley, 2002). The Gaussian...

  4. Lubbock Metropolitan Transportation Plan 

    E-Print Network [OSTI]

    Lubbock Metropolitan Planning Organization

    2007-09-18

    ..............................................................................................................................40 Marsha Sharp Freeway (US 62/82) ...............................................................................................40 Ports-To-Plains Corridor...

  5. Manchester Metropolitan University Sustainability

    E-Print Network [OSTI]

    to create a sustainable University with a positive environmental impact" First Class Environmental and environmental impact. · We've installed two green roofs on our All Saints building to help reduce the risk "Working together to create a sustainable University with a positive environmental impact" First Class

  6. Neutron Science Research Areas | ORNL

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

    Home | Science & Discovery | Neutron Science | Research Areas SHARE Research Areas Neutron scattering research at ORNL covers four broad research areas: biology and soft...

  7. DRAFT of Klahr, D. (2012) Patterns, Rules, & Discoveries in Life and in Science. In Carver, S., & Shrager, J..(Eds.) The Journey From Child to Scientist: Integrating Cognitive Development and the Education Sciences. Washington DC: American Psychological A

    E-Print Network [OSTI]

    Klahr, David

    2012-01-01

    Development and the Education Sciences. Washington DC: American Psychological Association 2 ingenious and the Education Sciences. Washington DC: American Psychological Association 1 Patterns, Rules, & Discoveries

  8. Geographic Area Month

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    Fuels by PAD District and State (Cents per Gallon Excluding Taxes) - Continued Geographic Area Month No. 1 Distillate No. 2 Distillate a No. 4 Fuel b Sales to End Users Sales for...

  9. Decontamination & decommissioning focus area

    SciTech Connect (OSTI)

    1996-08-01

    In January 1994, the US Department of Energy Office of Environmental Management (DOE EM) formally introduced its new approach to managing DOE`s environmental research and technology development activities. The goal of the new approach is to conduct research and development in critical areas of interest to DOE, utilizing the best talent in the Department and in the national science community. To facilitate this solutions-oriented approach, the Office of Science and Technology (EM-50, formerly the Office of Technology Development) formed five Focus AReas to stimulate the required basic research, development, and demonstration efforts to seek new, innovative cleanup methods. In February 1995, EM-50 selected the DOE Morgantown Energy Technology Center (METC) to lead implementation of one of these Focus Areas: the Decontamination and Decommissioning (D & D) Focus Area.

  10. 300 Area Disturbance Report

    SciTech Connect (OSTI)

    LL Hale; MK Wright; NA Cadoret

    1999-01-07

    The objective of this study was to define areas of previous disturbance in the 300 Area of the U.S. Department of Energy (DOE) Hanford Site to eliminate these areas from the cultural resource review process, reduce cultural resource monitoring costs, and allow cultural resource specialists to focus on areas where subsurface disturbance is minimal or nonexistent. Research into available sources suggests that impacts from excavations have been significant wherever the following construction activities have occurred: building basements and pits, waste ponds, burial grounds, trenches, installation of subsurface pipelines, power poles, water hydrants, and well construction. Beyond the areas just mentioned, substrates in the' 300 Area consist of a complex, multidimen- sional mosaic composed of undisturbed stratigraphy, backfill, and disturbed sediments; Four Geographic Information System (GIS) maps were created to display known areas of disturbance in the 300 Area. These maps contain information gleaned from a variety of sources, but the primary sources include the Hanford GIS database system, engineer drawings, and historic maps. In addition to these maps, several assumptions can be made about areas of disturbance in the 300 Area as a result of this study: o o Buried pipelines are not always located where they are mapped. As a result, cultural resource monitors or specialists should not depend on maps depicting subsurface pipelines for accurate locations of previous disturbance. Temporary roads built in the early 1940s were placed on layers of sand and gravel 8 to 12 in. thick. Given this information, it is likely that substrates beneath these early roads are only minimally disturbed. Building foundations ranged from concrete slabs no more than 6 to 8 in. thick to deeply excavated pits and basements. Buildings constructed with slab foundations are more numerous than may be expected, and minimally disturbed substrates may be expected in these locations. Historic black and white photographs provide a partial record of some excavations, including trenches, building basements, and material lay-down yards. Estimates of excavation depth and width can be made, but these estimates are not accurate enough to pinpoint the exact location where the disturbedhmdisturbed interface is located (e.g., camera angles were such that depths and/or widths of excavations could not be accurately determined or estimated). In spite of these limitations, these photographs provide essential information. Aerial and historic low-level photographs have captured what appears to be backfill throughout much of the eastern portion of the 300 Area-near the Columbia River shoreline. This layer of fill has likely afforded some protection for the natural landscape buried beneath the fill. This assumption fits nicely with the intermittent and inadvertent discoveries of hearths and stone tools documented through the years in this part of the 300 Area. Conversely, leveling of sand dunes appears to be substantial in the northwestern portion of the 300 Area during the early stages of development. o Project files and engineer drawings do not contain information on any impromptu but necessary adjustments made on the ground during project implementation-after the design phase. Further, many projects are planned and mapped but never implemented-this information is also not often placed in project files. Specific recommendations for a 300 Area cultural resource monitoring strategy are contained in the final section of this document. In general, it is recommended that monitoring continue for all projects located within 400 m of the Columbia River. The 400-m zone is culturally sensitive and likely retains some of the most intact buried substrates in the 300 Area.

  11. Quantum Oscillator on $\\DC P^n$ in a constant magnetic field

    E-Print Network [OSTI]

    Stefano Bellucci; Armen Nersessian; Armen Yeranyan

    2004-06-22

    We construct the quantum oscillator interacting with a constant magnetic field on complex projective spaces $\\DC P^N$, as well as on their non-compact counterparts, i. e. the $N-$dimensional Lobachewski spaces ${\\cal L}_N$. We find the spectrum of this system and the complete basis of wavefunctions. Surprisingly, the inclusion of a magnetic field does not yield any qualitative change in the energy spectrum. For $N>1$ the magnetic field does not break the superintegrability of the system, whereas for N=1 it preserves the exact solvability of the system. We extend this results to the cones constructed over $\\DC P^N$ and ${\\cal L}_N$, and perform the (Kustaanheimo-Stiefel) transformation of these systems to the three-dimensional Coulomb-like systems.

  12. Demonstration of Cathode Emittance Dominated High Bunch Charge Beams in a DC gun-based Photoinjector

    E-Print Network [OSTI]

    Gulliford, Colwyn; Bazarov, Ivan; Dunham, Bruce; Cultrera, Luca

    2015-01-01

    We present the results of transverse emittance and longitudinal current profile measurements of high bunch charge (greater than or equal to 100 pC) beams produced in the DC gun-based Cornell Energy Recovery Linac Photoinjector. In particular, we show that the cathode thermal and core beam emittances dominate the final 95% and core emittance measured at 9-9.5 MeV. Additionally, we demonstrate excellent agreement between optimized 3D space charge simulations and measurement, and show that the quality of the transverse laser distribution limits the optimal simulated and measured emittances. These results, previously thought achievable only with RF guns, demonstrate that DC gun based photoinjectors are capable of delivering beams with sufficient single bunch charge and beam quality suitable for many current and next generation accelerator projects such as Energy Recovery Linacs (ERLs) and Free Electron Lasers (FELs).

  13. Metastability in a nano-bridge based hysteretic DC-SQUID embedded in superconducting microwave resonator

    E-Print Network [OSTI]

    Eran Segev; Oren Suchoi; Oleg Shtempluck; Fei Xue; Eyal Buks

    2010-07-29

    We study the metastable response of a highly hysteretic DC-SQUID made of a Niobium loop interrupted by two nano-bridges. We excite the SQUID with an alternating current and with direct magnetic flux, and find different stability zones forming diamond-like structures in the measured voltage across the SQUID. When such a SQUID is embedded in a transmission line resonator similar diamond structures are observed in the reflection pattern of the resonator. We have calculated the DC-SQUID stability diagram in the plane of the exciting control parameters, both analytically and numerically. In addition, we have obtained numerical simulations of the SQUID equations of motion, taking into account temperature variations and non-sinusoidal current-phase relation of the nano-bridges. Good agreement is found between experimental and theoretical results.

  14. Demonstration of cathode emittance dominated high bunch charge beams in a DC gun-based photoinjector

    SciTech Connect (OSTI)

    Gulliford, Colwyn Bartnik, Adam Bazarov, Ivan; Dunham, Bruce; Cultrera, Luca

    2015-03-02

    We present the results of transverse emittance and longitudinal current profile measurements of high bunch charge (?100 pC) beams produced in the DC gun-based Cornell energy recovery linac photoinjector. In particular, we show that the cathode thermal and core beam emittances dominate the final 95% and core emittances measured at 9–9.5?MeV. Additionally, we demonstrate excellent agreement between optimized 3D space charge simulations and measurement, and show that the quality of the transverse laser distribution limits the optimal simulated and measured emittances. These results, previously thought achievable only with RF guns, demonstrate that DC gun based photoinjectors are capable of delivering beams with sufficient single bunch charge and beam quality suitable for many current and next generation accelerator projects such as Energy Recovery Linacs and Free Electron Lasers.

  15. Effect of alkali addition on DC conductivity and thermal properties of vanadium-bismo-borate glasses

    SciTech Connect (OSTI)

    Khasa, S., E-mail: skhasa@rediff.com; Dahiya, M. S., E-mail: skhasa@rediff.com [Physics Department, Deenbandhu Chhotu Ram University of Science and Technology, Murthal-131039 (India); Agarwal, A. [Physics Department, Guru Jambheshwara University of Science and Technology, Hisar-125001 (India)

    2014-04-24

    The DC Conductivity and Differential Thermal Analysis of glasses with composition (30?x)Li{sub 2}O?xV{sub 2}O{sub 5}?20Bi{sub 2}O{sub 3}?50B{sub 2}O{sub 3}(x=15, 10, 5) has been carried out in order to study the effect of replacing the Transition Metal Oxide (TMO) with alkali oxide. A significant increase in the DC conductivity has been observed with increase in alkali content. Again the thermal measurements have shown the decrease in both glass transition temperature (T{sub g}) and crystallization temperature (T{sub x}). The Glass Stability (GS) and Glass Forming Ability (GFA) have also been calculated and these also were found to decrease with increase in alkali oxide content at the cost of TMO.

  16. Time series analysis of ionization waves in dc neon glow discharge

    SciTech Connect (OSTI)

    Hassouba, M. A.; Al-Naggar, H. I.; Al-Naggar, N. M.; Wilke, C. [Department of Physics, Faculty of Science, Benha University (Egypt); Institute of Physics, E. M. A. University, Domstrasse 10a, 17489 Greifswald (Germany)

    2006-07-15

    The dynamics of dc neon glow discharge is examined by calculating a Lyapunov exponent spectrum (LES) and correlation dimension (D{sub corr}) from experimental time series. The embedding theory is used to reconstruct an attractor with the delay coordinate method. The analysis refers to periodic, chaotic, and quasi-periodic attractors. The results obtained are confirmed by a comparison with other methods of time series analysis such as the Fourier power spectrum and autocorrelation function. The main object of the present work is the positive column of a dc neon glow discharge. The positive column is an excellent model for the study of a non-linearity plasma system because it is nonisothermal plasma far from equilibrium.

  17. Ions in solution: Density corrected density functional theory (DC-DFT)

    SciTech Connect (OSTI)

    Kim, Min-Cheol; Sim, Eunji; Burke, Kieron

    2014-05-14

    Standard density functional approximations often give questionable results for odd-electron radical complexes, with the error typically attributed to self-interaction. In density corrected density functional theory (DC-DFT), certain classes of density functional theory calculations are significantly improved by using densities more accurate than the self-consistent densities. We discuss how to identify such cases, and how DC-DFT applies more generally. To illustrate, we calculate potential energy surfaces of HO·Cl{sup ?} and HO·H{sub 2}O complexes using various common approximate functionals, with and without this density correction. Commonly used approximations yield wrongly shaped surfaces and/or incorrect minima when calculated self consistently, while yielding almost identical shapes and minima when density corrected. This improvement is retained even in the presence of implicit solvent.

  18. Method of measuring the dc electric field and other tokamak parameters

    DOE Patents [OSTI]

    Fisch, Nathaniel J. (Princeton, NJ); Kirtz, Arnold H. (Princeton Junction, NJ)

    1992-01-01

    A method including externally imposing an impulsive momentum-space flux to perturb hot tokamak electrons thereby producing a transient synchrotron radiation signal, in frequency-time space, and the inference, using very fast algorithms, of plasma parameters including the effective ion charge state Z.sub.eff, the direction of the magnetic field, and the position and width in velocity space of the impulsive momentum-space flux, and, in particular, the dc toroidal electric field.

  19. Design, Packaging, and Architectural Policy Co-optimization for DC Power Integrity in 3D DRAM

    E-Print Network [OSTI]

    Lim, Sung Kyu

    -domain CAD/architectural platform that addresses DC power noise issues in 3D DRAM targeting stacked DDR3) Interposer Figure 1: Default configurations of four 3D DRAM designs. (a) on-chip stacked DDR3, (b) off-chip stacked DDR3, (c) Wide I/O, and (d) HMC. are used in a stacked DDR3 design [2] to reduce power noise. Sub

  20. Analogue Hawking Radiation in a dc-SQUID Array Transmission Line

    E-Print Network [OSTI]

    P. D. Nation; M. P. Blencowe; A. J. Rimberg; E. Buks

    2009-08-01

    We propose the use of a superconducting waveguide formed from an array of dc-SQUID's for investigating analogue Hawking radiation. Biasing the array with a space-time varying flux modifies the propagation velocity of the waveguide, leading to an effective metric with an horizon. Being a fundamentally quantum mechanical device, this setup allows for investigations of quantum effects such as back-reaction and analogue space-time fluctuations on the Hawking process.

  1. Method and apparatus for generating radiation utilizing DC to AC conversion with a conductive front

    DOE Patents [OSTI]

    Dawson, John M. (Pacific Palisades, CA); Mori, Warren B. (Hermosa Beach, CA); Lai, Chih-Hsiang (So. Pasadena, CA); Katsouleas, Thomas C. (Malibu, CA)

    1998-01-01

    Method and apparatus for generating radiation of high power, variable duration and broad tunability over several orders of magnitude from a laser-ionized gas-filled capacitor array. The method and apparatus convert a DC electric field pattern into a coherent electromagnetic wave train when a relativistic ionization front passes between the capacitor plates. The frequency and duration of the radiation is controlled by the gas pressure and capacitor spacing.

  2. 1D AND 2D PIC-MCC SIMULATIONS OF DC DISCHARGES BETWEEN PLANAR ELECTRODES

    E-Print Network [OSTI]

    Wurtele, Jonathan

    1D AND 2D PIC-MCC SIMULATIONS OF DC DISCHARGES BETWEEN PLANAR ELECTRODES Verboncoeur, JV, Hammel in argon and helium (p = 0.1 - 1 Torr; I = 10-6 - 10-2 A) have been simulated using the PIC-MCC methedology using 1d-3v and 2d-3v models. The theory for glow discharges is presented. PIC results are analyzed

  3. VUV generation by adiabatically expanded and excited by a DC electrical discharge Argon gas

    SciTech Connect (OSTI)

    Pipergias, K.; Yasemidis, D.; Reppa, E.; Pentaris, D.; Efthimiopoulos, T.; Merlemis, N.; Giannetas, V.

    2010-11-10

    We investigate the emission of Argon (Ar) gas which is adiabatically expanded through a nozzle and excited using a DC electrical discharge. Because of the expansion and the electronic excitation, Ar dimers and clusters are formed, which give radiation in the second (2nd) and in the third (3rd) continua of Ar, centered at about 126 and 254 nm respectively. We particularly focus our study on the 2nd continuum, in order to develop a laser at this wavelength.

  4. Ultraviolet and electron irradiation of DC-704 siloxane oil in zinc orthotitanate paint

    SciTech Connect (OSTI)

    Mossman, D.L.; Barsh, M.K.; Greenberg, S.A.

    1982-01-01

    Discrepancies exist between accelerated laboratory simulation and geosynchronous orbit flight data for zinc orthotitanate (ZOT) paint degradation. The effects of ultraviolet and electron irradiation on ZOT contaminated with DC-704 silicone oil are reported. In-situ solar absorptance and emittance changes for contaminated and clean specimens are discussed with reference to post-test surface morphology, determined by scanning electron microscope analysis. Features of the contaminated ZOT degradation kinetics correlate with orbital performance.

  5. Comparative Study of DC and AC Microgrids in Commercial Buildings Across Different Climates and Operating Profiles: Preprint

    SciTech Connect (OSTI)

    Fregosi, D.; Ravula, S.; Brhlik, D.; Saussele, J.; Frank, S.; Bonnema, E.; Scheib, J.; Wilson, E.

    2015-04-22

    Bosch has developed and demonstrated a novel DC microgrid system designed to maximize utilization efficiency for locally generated photovoltaic energy while offering high reliability, safety, redundancy, and reduced cost compared to equivalent AC systems. Several demonstration projects validating the system feasibility and expected efficiency gains have been completed and additional ones are in progress. This work gives an overview of the Bosch DC microgrid system and presents key results from a large simulation study done to estimate the energy savings of the Bosch DC microgrid over conventional AC systems. The study examined the system performance in locations across the United States for several commercial building types and operating profiles and found that the Bosch DC microgrid uses generated PV energy 6%–8% more efficiently than traditional AC systems.

  6. The design of a hybrid DC motor/SMA actuated robotic hand based on physiological and anatomical synergies

    E-Print Network [OSTI]

    Rosmarin, Josiah Benjamin

    2008-01-01

    A new approach to the design and control of multi-fingered hands using hybrid DC motor-Shape Memory Alloy (SMA) array actuators is presented in this thesis. The fundamental design concept is based on the principle of motor ...

  7. Data:12a45141-7972-4ec8-a2dc-37fedc8133d3 | Open Energy Information

    Open Energy Info (EERE)

    ec8-a2dc-37fedc8133d3 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic...

  8. Data:7a23ab07-5468-48dc-947a-679327ca61e0 | Open Energy Information

    Open Energy Info (EERE)

    dc-947a-679327ca61e0 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic...

  9. Design and performance evaluation of an electric go-kart and custom permanent magnet brushless DC motor

    E-Print Network [OSTI]

    Davis, Eli Marc

    2012-01-01

    This undergraduate thesis documents the design considerations and specifications of building a personal battery-powered go-kart. This includes designing and building a custom brushless DC motor for use in the drivetrain. ...

  10. A Generalized Class of Stationary Frame-Current Controllers for Grid-Connected AC–DC Converters

    E-Print Network [OSTI]

    Hwang, J. George

    Within power systems, high-power pulsewidth-modulated ac-dc converters are used in flexible ac transmission systems controllers and for interfacing renewable energy sources to the grid. These converters traditionally ...

  11. Residential Energy Efficiency Research Planning Meeting Summary Report: Washington, D.C. - October 27-28, 2011

    SciTech Connect (OSTI)

    Not Available

    2012-02-01

    This report summarizes key findings and outcomes from the U.S. Department of Energy's Building America Residential Energy Efficiency Research Planning meeting, held on October 28-29, 2011, in Washington, D.C.

  12. The District Emancipation Act and Its Effects on Washington, DC during the Civil War Brittany Jones & Dr. Kenneth Winkle

    E-Print Network [OSTI]

    Farritor, Shane

    but equal rhetoric Opinions & Outcomes: African Americans · Congressional Globe, 37 Congress, 2 session the smuggling of slaves out of DC · African American testimony held equal weight to whites · Only granted

  13. Achieving high mobility ZnO:Al at very high growth rates by dc filtered cathodic arc deposition

    E-Print Network [OSTI]

    Mendelsberg, Rueben

    2013-01-01

    scale heating in cathodic arc plasma deposition. Appl. Phys.modest 25-70 A dc. The arc plasma was ?ltered using aenergy of the cathodic arc plasma is utilized for ?lm growth

  14. The Smart Approach to Intelligence:[FINAL Edition] John Deutch. The Washington Post. Washington, D.C.: Sep 9, 2002.

    E-Print Network [OSTI]

    Deutch, John

    The Smart Approach to Intelligence:[FINAL Edition] John Deutch. The Washington Post. Washington, D.C.: Sep 9, 2002. pg. A.17 Full Text (1023 words) Copyright The Washington Post Company Sep 9, 2002 Defense

  15. Quantitative study of macroscopic quantum tunneling in a dc SQUID: A system with two degrees of freedom

    E-Print Network [OSTI]

    Li, Shaoxiong; Yu, Yang; Zhang, Y.; Qiu, W.; Han, Siyuan; Wang, Z.

    2002-08-01

    To test whether the theory of macroscopic quantum tunneling (MQT) is applicable to systems with 2 degrees of freedom, we experimentally investigated the switching current distribution of a dc SQUID. Using sample parameters determined from...

  16. Hardware model of a shipboard zonal electrical distribution system (ZEDS) : alternating current/direct current (AC/DC)

    E-Print Network [OSTI]

    Tidd, Chad N. (Chad Norman)

    2010-01-01

    A hardware model of a shipboard electrical distribution system based on aspects of the DDG 51 Flight IIA, Arleigh Burke class, 60Hz Alternating Current (AC) and the future direct current (DC), zonal electrical distribution ...

  17. Vehicle Technologies Office Merit Review 2014: DC Fast Charging Effects on Battery Life and EVSE Efficiency and Security Testing

    Broader source: Energy.gov [DOE]

    Presentation given by Idaho National Laboratory at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about DC fast charging...

  18. www.sciencemag.org/cgi/content/full/330/6009/1408/DC1 Supporting Online Material for

    E-Print Network [OSTI]

    Cottrell, Garrison W.

    www.sciencemag.org/cgi/content/full/330/6009/1408/DC1 Supporting Online Material for Paradoxical-90% of their free feeding weight, except during recovery from surgery where food was available ad libitum. Water

  19. www.sciencemag.org/cgi/content/full/314/5805/1585/DC1 Supporting Online Material for

    E-Print Network [OSTI]

    Winfree, Erik

    www.sciencemag.org/cgi/content/full/314/5805/1585/DC1 Supporting Online Material for Enzyme solutions were prepared at a concentration of 50 µM in ultra pure water (purified by a Milli-Q system

  20. OLED area illumination source

    DOE Patents [OSTI]

    Foust, Donald Franklin (Scotia, NY); Duggal, Anil Raj (Niskayuna, NY); Shiang, Joseph John (Niskayuna, NY); Nealon, William Francis (Gloversville, NY); Bortscheller, Jacob Charles (Clifton Park, NY)

    2008-03-25

    The present invention relates to an area illumination light source comprising a plurality of individual OLED panels. The individual OLED panels are configured in a physically modular fashion. Each OLED panel comprising a plurality of OLED devices. Each OLED panel comprises a first electrode and a second electrode such that the power being supplied to each individual OLED panel may be varied independently. A power supply unit capable of delivering varying levels of voltage simultaneously to the first and second electrodes of each of the individual OLED panels is also provided. The area illumination light source also comprises a mount within which the OLED panels are arrayed.