Sample records for driving increasing congestion

  1. Right ventricular ejection fraction: an indicator of increased mortality in patients with congestive heart failure associated with coronary artery disease

    SciTech Connect (OSTI)

    Polak, J.F.; Holman, B.L.; Wynne, J.; Colucci, W.S.

    1983-08-01T23:59:59.000Z

    The predictive value of radionuclide ventriculography was studied in 34 patients with depressed left ventricular ejection fraction (less than 40%) and clinically evident congestive heart failure secondary to atherosclerotic coronary artery disease. In addition to left ventricular ejection fraction, right ventricular ejection fraction and extent of left ventricular paradox were obtained in an attempt to identify a subgroup at increased risk of mortality during the ensuing months. The 16 patients who were alive after a 2 year follow-up period had a higher right ventricular ejection fraction and less extensive left ventricular dyskinesia. When a right ventricular ejection fraction of less than 35% was used as a discriminant, mortality was significantly greater among the 21 patients with a depressed right ventricular ejection fraction (71 versus 23%), a finding confirmed by a life table analysis. It appears that the multiple factors contributing to the reduction in right ventricular ejection fraction make it a useful index not only for assessing biventricular function, but also for predicting patient outcome.

  2. Climate, Livestock, and Vegetation: What Drives Fire Increase in the Arid

    E-Print Network [OSTI]

    Radeloff, Volker C.

    : burning; arid ecosystems; livestock; climate; broad-scale climate; Southern Russia; socio-economic change by decreasing livestock numbers, vegetation changes, climate change, or interactions of these factors. OurClimate, Livestock, and Vegetation: What Drives Fire Increase in the Arid Ecosystems of Southern

  3. Demonstration of Reduced Airport Congestion Through Pushback Rate Control

    E-Print Network [OSTI]

    Simaiakis, Ioannis

    2011-02-02T23:59:59.000Z

    Airport surface congestion results in significant increases in taxi times, fuel burn and emissions at major airports. This paper presents the field tests of a control strategy to airport congestion control at Boston Logan ...

  4. RTS/CTS-Induced Congestion in Ad Hoc Wireless LANs

    E-Print Network [OSTI]

    Carruthers, Jeffrey

    . Figure 1 depicts a conceptual "throughput versus load" curve for a network. In the presence of congestion to zero as the load increases, i.e. it follows the "Congested" curve in Figure 1 instead of following a certain point, the network throughput decreases with increasing load instead of maintaining its peak value

  5. “Playboy Bunny” Sign of Congestive Heart Failure

    E-Print Network [OSTI]

    Hokama, Akira; Arakaki, Shingo; Shibata, Daisuke; Maeshiro, Tatsuji; Kinjo, Fukunori; Fujita, Jiro

    2011-01-01T23:59:59.000Z

    Bunny’’ Sign of Congestive Heart Failure Akira Hokama, MD*to evaluate congestive heart failure. We highlight ‘‘Playboycaused by congestive heart failure. [West J Emerg Med. 2011;

  6. Making the Traffic Operations Case for Congestion Pricing: Operational Impacts of Congestion Pricing

    SciTech Connect (OSTI)

    Chin, Shih-Miao [ORNL; Hu, Patricia S [ORNL; Davidson, Diane [ORNL

    2011-02-01T23:59:59.000Z

    Congestion begins when an excess of vehicles on a segment of roadway at a given time, resulting in speeds that are significantly slower than normal or 'free flow' speeds. Congestion often means stop-and-go traffic. The transition occurs when vehicle density (the number of vehicles per mile in a lane) exceeds a critical level. Once traffic enters a state of congestion, recovery or time to return to a free-flow state is lengthy; and during the recovery process, delay continues to accumulate. The breakdown in speed and flow greatly impedes the efficient operation of the freeway system, resulting in economic, mobility, environmental and safety problems. Freeways are designed to function as access-controlled highways characterized by uninterrupted traffic flow so references to freeway performance relate primarily to the quality of traffic flow or traffic conditions as experienced by users of the freeway. The maximum flow or capacity of a freeway segment is reached while traffic is moving freely. As a result, freeways are most productive when they carry capacity flows at 60 mph, whereas lower speeds impose freeway delay, resulting in bottlenecks. Bottlenecks may be caused by physical disruptions, such as a reduced number of lanes, a change in grade, or an on-ramp with a short merge lane. This type of bottleneck occurs on a predictable or 'recurrent' basis at the same time of day and same day of week. Recurrent congestion totals 45% of congestion and is primarily from bottlenecks (40%) as well as inadequate signal timing (5%). Nonrecurring bottlenecks result from crashes, work zone disruptions, adverse weather conditions, and special events that create surges in demand and that account for over 55% of experienced congestion. Figure 1.1 shows that nonrecurring congestion is composed of traffic incidents (25%), severe weather (15%), work zones, (10%), and special events (5%). Between 1995 and 2005, the average percentage change in increased peak traveler delay, based on hours spent in traffic in a year, grew by 22% as the national average of hours spent in delay grew from 36 hours to 44 hours. Peak delay per traveler grew one-third in medium-size urban areas over the 10 year period. The traffic engineering community has developed an arsenal of integrated tools to mitigate the impacts of congestion on freeway throughput and performance, including pricing of capacity to manage demand for travel. Congestion pricing is a strategy which dynamically matches demand with available capacity. A congestion price is a user fee equal to the added cost imposed on other travelers as a result of the last traveler's entry into the highway network. The concept is based on the idea that motorists should pay for the additional congestion they create when entering a congested road. The concept calls for fees to vary according to the level of congestion with the price mechanism applied to make travelers more fully aware of the congestion externality they impose on other travelers and the system itself. The operational rationales for the institution of pricing strategies are to improve the efficiency of operations in a corridor and/or to better manage congestion. To this end, the objectives of this project were to: (1) Better understand and quantify the impacts of congestion pricing strategies on traffic operations through the study of actual projects, and (2) Better understand and quantify the impacts of congestion pricing strategies on traffic operations through the use of modeling and other analytical methods. Specifically, the project was to identify credible analytical procedures that FHWA can use to quantify the impacts of various congestion pricing strategies on traffic flow (throughput) and congestion.

  7. PJMDOCS-#501543-v1-DOE_Congestion_Workshop_9_17_08_-_MJK.DOC

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

    PJM principally due to increased transportation costs, and when coupled with increases in oil and natural gas prices, have worked to increase congestion. Attached as an Excel...

  8. ECN Marking for Congestion Control in Multihop Wireless Networks

    E-Print Network [OSTI]

    Siris, Vasilios A.

    ECN Marking for Congestion Control in Multihop Wireless Networks Vasilios A. Siris and Despina an approach to increase TCP's fair- ness in multihop wireless networks, using ECN as a congestion signalling demonstrate that our approach can improve TCP's fairness in a multihop wireless network compared to drop tail

  9. Congestion Management Requirements, Methods and Performance Indices

    SciTech Connect (OSTI)

    Kirby, B.J.

    2002-08-28T23:59:59.000Z

    Transmission congestion occurs when there is insufficient transmission capacity to simultaneously accommodate all requests for transmission service within a region. Historically, vertically integrated utilities managed this condition by constraining the economic dispatch of generators with the objective of ensuring security and reliability of their own and/or neighboring systems. Electric power industry restructuring has moved generation investment and operations decisions into the competitive market but has left transmission as a communal resource in the regulated environment. This mixing of competitive generation and regulated transmission makes congestion management difficult. The difficulty is compounded by increases in the amount of congestion resulting from increased commercial transactions and the relative decline in the amount of transmission. Transmission capacity, relative to peak load, has been declining in all regions of the U.S. for over a decade. This decline is expected to continue. Congestion management schemes used today have negative impacts on energy markets, such as disruptions and monetary penalties, under some conditions. To mitigate these concerns various congestion management methods have been proposed, including redispatch and curtailment of scheduled energy transmission. In the restructured electric energy industry environment, new congestion management approaches are being developed that strive to achieve the desired degree of reliability while supporting competition in the bulk power market. This report first presents an overview and background on key issues and emerging approaches to congestion management. It goes on to identify and describe policies affecting congestion management that are favored and/or are now being considered by FERC, NERC, and one of the regional reliability councils (WSCC). It reviews the operational procedures in use or proposed by three of the leading independent system operators (ISOs) including ERCOT, California ISO, and PJM. Finally, it presents recommendations for evaluating the competing alternative approaches and developing metrics to use in such evaluations. As with any report concerning electricity restructuring, specific details quickly become dated. Individual utilities, states and regions will inevitably change rules and procedures even during the time it takes to publish a report. Hopefully, the general conclusions are more robust and this report will continue to have value even after some of the specific details have changed.

  10. Congestion control in charging of electric vehicles

    E-Print Network [OSTI]

    Carvalho, Rui; Gibbens, Richard; Kelly, Frank

    2015-01-01T23:59:59.000Z

    The increasing penetration of electric vehicles over the coming decades, taken together with the high cost to upgrade local distribution networks, and consumer demand for home charging, suggest that managing congestion on low voltage networks will be a crucial component of the electric vehicle revolution and the move away from fossil fuels in transportation. Here, we model the max-flow and proportional fairness protocols for the control of congestion caused by a fleet of vehicles charging on distribution networks. We analyse the inequality in the charging times as the vehicle arrival rate increases, and show that charging times are considerably more uneven in max-flow than in proportional fairness. We also analyse the onset of instability, and find that the critical arrival rate is indistinguishable between the two protocols.

  11. Abstract--The increase in use of power electronics in transmission and distribution applications is the driving

    E-Print Network [OSTI]

    Tolbert, Leon M.

    is the driving force for development of high power devices. Utility applications like FACTS and HVDC require cost and compared for SiC and Si devices. These loss models are integrated with an HVDC transmission system to study of the systems. High Voltage DC (HVDC) transmission and Flexible AC Transmission Systems (FACTS) are the widely

  12. 2006 National Electric Transmission Congestion Study and Related...

    Office of Environmental Management (EM)

    6 National Electric Transmission Congestion Study and Related Materials 2006 National Electric Transmission Congestion Study and Related Materials The 2006 National Congestion...

  13. INCREASE

    ScienceCinema (OSTI)

    None

    2013-07-22T23:59:59.000Z

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

  14. 2006 National Electric Transmission Congestion Study | Department...

    Energy Savers [EERE]

    Congestion Study Federal Register Notice of Inquiry Comments to Federal Register Notice Conference Proceedings Electricity Advisory Committee Technology Development Electricity...

  15. CONGESTION MANAGEMENT ALLOCATION 5.1 Introduction

    E-Print Network [OSTI]

    Gross, George

    of the congestion management allocation scheme. The time frame used here for the consideration of congestion attributable to each transaction. The congestion allocation results are explicitly represented in the IGO devote Section 5.4 to the presentation of numerical results and some discussion of the implementation

  16. Relay Placement for Minimizing Congestion in Wireless Backbone Networks*

    E-Print Network [OSTI]

    Shayman, Mark A.

    Relay Placement for Minimizing Congestion in Wireless Backbone Networks* Abhishek Kashyap, Fangting Park MD 20742 Email: {kashyap, ftsun, shayman}@glue.umd.edu Abstract-- Wireless optical networks are being increasingly used in the backbone of hierarchical ad hoc networks. We consider the problem

  17. IEEE TRANSACTIONS ON COMPUTERS 1 Analysis of Backward Congestion Notification

    E-Print Network [OSTI]

    Stojmenovic, Ivan

    Channel and High Performance Computing (HPC) networks over InfiniBand, not only increases the cost as the unified switch fabric for all of the TCP/IP traffic, the storage traffic and the high performance computing traffic in data centers. Backward Congestion Notification (BCN) is the basic mechanism for the end

  18. Estimating current and future benefits of airport surface congestion management techniques

    E-Print Network [OSTI]

    Nakahara, Alex (Alex Hiroo)

    2012-01-01T23:59:59.000Z

    Air traffic is expected to continue to grow in the future and improved methods for dealing with the increased demand on the system need to be designed and implemented. One method for reducing surface congestion at airports ...

  19. Finding ways out of congestion for the Chicago Loop : a microscopic simulation approach

    E-Print Network [OSTI]

    Jiang, Shan, S.M. Massachusetts Institute of Technology

    2009-01-01T23:59:59.000Z

    Over the past two decades, the City of Chicago, as many of its counterparts in the U.S., has experienced a great increase in traffic congestion, which limits regional mobility, induces a huge amount of energy waste and ...

  20. 2012 National Electric Transmission Congestion Study: Preliminary...

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

    loading relief (TLR) procedures. Frequent or recurrent disparities in wholesale electricity prices across regional markets, as seen in RTOs' reported congestion...

  1. 2009 National Electric Transmission Congestion Study | Department...

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

    Study Additional Materials Related to the 2009 Congestion Study Federal Register Notice of Inquiry Regional Workshop Proceedings Technical Conference Proceedings Public Comments...

  2. From: Scott Thorsen To: Congestion Study Comments Subject: Congestion Study

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport inEnergy0.pdf Flash2010-60.pdf2JessiNicholas AmmannOnaran, KarenRodCongestion

  3. arnaud.vergnol@hei.fr, jonathan.sprooten@hei.fr. Optimal network congestion management using wind farms

    E-Print Network [OSTI]

    Boyer, Edmond

    congestion in rural areas due the important increase of wind generation [1]. In the literature, many methods generation. Therefore, most European TSO's have chosen to manage separately, congestions related to wind are affected by errors in load and generation prediction due to element outage or random production as is wind

  4. acute congestive heart: Topics by E-print Network

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

    travel that is congested Source: 2002 Urban Mobility Report, TTI Congestion: Its Marginal Social Cost Travel Time (t) Demand ( D q) Externalized Cost at Capacity Kockelman,...

  5. advanced congestive heart: Topics by E-print Network

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

    travel that is congested Source: 2002 Urban Mobility Report, TTI Congestion: Its Marginal Social Cost Travel Time (t) Demand ( D q) Externalized Cost at Capacity Kockelman,...

  6. CRADIT FARM DRIVE CREEK DRIVE

    E-Print Network [OSTI]

    Davis, H. Floyd

    CRADIT FARM DRIVE THURSTON CREEK DRIVE CENTRALAVENUE ENUE UNIVERSITY AVENUE EASTAVENUE FOREST HOME CREEK DRIVE CENTRALAVENUE ENUE UNIVERSITY AVENUE EASTAVENUE FOREST HOME DRIVE HIGHLAND ROBERTS PLACE GARDEN DEANS ARTS QUAD RAWLINGS GREEN R. URIS GARDEN AG QUAD BIOLOGY BEEBE LAK FALL CREEK Clark Hall Olin

  7. The political calculus of congestion pricing

    E-Print Network [OSTI]

    King, David; Manville, Michael; Shoup, Donald

    2007-01-01T23:59:59.000Z

    congestion. Urban Studies Go mez-Iba n ez, J. , 1992. Thehoping it will disappear. Go mez-Iba n ez (1992) argued thatin most commuters’ lives. Go mez- Iba n ez’s point is sound,

  8. Essays on airport and airway congestion

    E-Print Network [OSTI]

    Schorr, Raphael Avram, 1976-

    2006-01-01T23:59:59.000Z

    Runway and airspace congestion are the primary causes of flight delays in the US. These delays cost airlines and airline customers billions of dollars per year. This thesis consists of two essays. The first essay focuses ...

  9. Techniques for mitigating congestion in wireless sensor networks

    E-Print Network [OSTI]

    Hull, Bret Warren, 1980-

    2005-01-01T23:59:59.000Z

    Network congestion occurs when offered traffic load exceeds available capacity at any point in a network. In wireless sensor networks, congestion causes overall channel quality to degrade and loss rates to rise, leads to ...

  10. Congestion control algorithms of TCP in emerging networks

    E-Print Network [OSTI]

    Bhandarkar, Sumitha

    2009-06-02T23:59:59.000Z

    faster than TCP in utilizing high bandwidth links while maintaining promising convergence properties. Third, we study the feasibility of employing congestion avoidance algorithms in TCP. We show that end-host based congestion prediction is more accurate...

  11. A Comprehensive Contribution Factor Method for Congestion Management

    E-Print Network [OSTI]

    be combined with demand side (load) management to solve the congestion. The congestion management scheme generator re-dispatching alone or combined with demand side management due to the availability of load1 A Comprehensive Contribution Factor Method for Congestion Management H. Song, Student Member

  12. The increasing world energy demand, depletion and unequal distribution of fossil resources, and the dangers caused by climate change are the driving forces for the

    E-Print Network [OSTI]

    van den Brink, Jeroen

    Summary Summary The increasing world energy demand, depletion and unequal distribution of fossil demand, many nations have established new regimes on renewable energy. For instance, the European of alternative energy sources. In view of the GHG emission reduction target agreed upon in the Kyoto protocol

  13. Driving on the Interior of Campus An increased number of vehicles and small electric/gas carts on campus, both State and private,

    E-Print Network [OSTI]

    de Lijser, Peter

    :30 AM - 3:00 PM. · Disciplinary action may be imposed on anyone violating the regulations. · Private on campus, both State and private, have created an increased risk to pedestrians and has damaged walkways Director or the designee. · Private and vendor vehicles are restricted at all times. Vehicles requiring

  14. Handling congestion in crowd motion modeling

    E-Print Network [OSTI]

    Maury, B; Santambrogio, F; Venel, J

    2011-01-01T23:59:59.000Z

    We address here the issue of congestion in the modeling of crowd motion, in the non-smooth framework: contacts between people are not anticipated and avoided, they actually occur, and they are explicitly taken into account in the model. We limit our approach to very basic principles in terms of behavior, to focus on the particular problems raised by the non-smooth character of the models. We consider that individuals tend to move according to a desired, or spontanous, velocity. We account for congestion by assuming that the evolution realizes at each time an instantaneous balance between individual tendencies and global constraints (overlapping is forbidden): the actual velocity is defined as the closest to the desired velocity among all admissible ones, in a least square sense. We develop those principles in the microscopic and macroscopic settings, and we present how the framework of Wasserstein distance between measures allows to recover the sweeping process nature of the problem on the macroscopic level, ...

  15. Congestive heart failure: treat the disease, not the symptom: return to normalcy/Part II--the experimental approach.

    E-Print Network [OSTI]

    Buckberg, Gerald D

    2007-01-01T23:59:59.000Z

    Number: Title: Congestive heart failure: treat the diseaseinvited) TITLE: Congestive heart failure: treat the diseasetreatment of congestive heart failure due to post-infarction

  16. Congestion Measures for Organized Markets in the U.S.

    SciTech Connect (OSTI)

    Fisher, Emily; Eto, Joseph H.

    2013-12-16T23:59:59.000Z

    Transmission lines deliver electricity that is generated at power plants to loads. When there is not sufficient transmission capacity to schedule or transport all desired electricity transfers, the transmission system is constrained, and the particular line, flowgate or interface is congested. While it is useful to measure congestion for several reasons—to identify where and how much congestion exists and how this changes over time, to determine whether or what to do about it, and to assess the effectiveness of actions taken—it is challenging to measure congestion in a meaningful and consistent way across markets or over time in the same market. This paper examines current public reporting of congestion measures for organized markets in the U.S., and what these measures can and cannot tell us about congestion across regions or over time in the same region.

  17. Electricity transmission congestion costs: A review of recent reports

    SciTech Connect (OSTI)

    Lesieutre, Bernard C.; Eto, Joseph H.

    2003-10-01T23:59:59.000Z

    Recently, independent system operators (ISOs) and others have published reports on the costs of transmission congestion. The magnitude of congestion costs cited in these reports has contributed to the national discussion on the current state of U.S. electricity transmission system and whether it provides an adequate platform for competition in wholesale electricity markets. This report reviews reports of congestion costs and begins to assess their implications for the current national discussion on the importance of the U.S. electricity transmission system for enabling competitive wholesale electricity markets. As a guiding principle, we posit that a more robust electricity system could reduce congestion costs; and thereby, (1) facilitate more vibrant and fair competition in wholesale electricity markets, and (2) enable consumers to seek out the lowest prices for electricity. Yet, examining the details suggests that, sometimes, there will be trade-offs between these goals. Therefore, it is essential to understand who pays, how much, and how do they benefit in evaluating options (both transmission and non-transmission alternatives) to address transmission congestion. To describe the differences among published estimates of congestion costs, we develop and motivate three ways by which transmission congestion costs are calculated in restructured markets. The assessment demonstrates that published transmission congestion costs are not directly comparable because they have been developed to serve different purposes. More importantly, critical information needed to make them more comparable, for example in order to evaluate the impacts of options to relieve congestion, is sometimes not available.

  18. National Electric Transmission Congestion Study - Draft for Public...

    Office of Environmental Management (EM)

    On August 19, 2014, the Department issued a Federal Register Notice announcing the availability of a draft of its National Electric Transmission Congestion Study for public...

  19. RULES FOR CONGESTION MANAGEMENT EVALUATION OF AVAILABILITY OF CAPACITY AND

    E-Print Network [OSTI]

    RULES FOR CONGESTION MANAGEMENT EVALUATION OF AVAILABILITY OF CAPACITY AND POSSIBILITIES.............................................................12 4.4 Available trading capacity in the market

  20. MEASURING RECURRENT AND NON-RECURRENT TRAFFIC CONGESTION

    E-Print Network [OSTI]

    Varaiya, Pravin

    Annual Meeting Transportation Research Board January 2003 Washington, D.C. August 1, 2002 No WORDS: 2600 congestion. Other congestion-related performance measures include travel rate, percent facility segments detectors or other surveillance systems. A methodology for rural freeway facilities is presented elsewhere

  1. Estimating the Actual Cost of Transmission System Congestion

    E-Print Network [OSTI]

    straightforward. Assuming complete knowledge of the power system inputs, such as the loads at all system buses congestion on a large-scale power system, such as the North American Eastern Interconnect, the simplicityEstimating the Actual Cost of Transmission System Congestion Thomas J. Overbye Department

  2. Engineering AnteaterDrive

    E-Print Network [OSTI]

    Mease, Kenneth D.

    Rockw ell & M DEA Engineering Tower AnteaterDrive AnteaterDrive East Peltason Drive EastPeltasonDrive East Peltason Drive Anteater Parking Structure EngineeringServiceRoad Engineering Laboratory Facility Engineering Gateway Engineering Hall AIRB Calit2 Engineering Lecture Hall Campus Building Engineering Building

  3. Political and Public Acceptability of Congestion Pricing: Ideology and Self Interest

    E-Print Network [OSTI]

    Harsman, Bjorn; Quigley, John M.

    2010-01-01T23:59:59.000Z

    Stockholm toll: An economic evaluation. Paper presented toa detailed regional economic evaluation of the congestion

  4. Political and Public Acceptability of Congestion Pricing: Ideology and Self Interest

    E-Print Network [OSTI]

    Harsman, Bjorn; Quigley, John M.

    2010-01-01T23:59:59.000Z

    The Stockholm Toll: An Economic Evaluation. Presented to thea detailed “regional economic evaluation” of the congestion

  5. Driving segments analysis for energy and environmental impacts of worsening traffic

    E-Print Network [OSTI]

    Feng, Wen, Ph. D. Massachusetts Institute of Technology

    2007-01-01T23:59:59.000Z

    During the last two decades, traffic congestion in the U.S. has increased from 30% to 67% of peak period travel. Further, current research shows that measures taken within transportation systems, such as adding capacity, ...

  6. Congestion pricing : policy dimensions, public rejection and impacts

    E-Print Network [OSTI]

    Chingcuanco, Franco (Franco Felipe)

    2014-01-01T23:59:59.000Z

    This thesis makes three related contributions to the broad literature on congestion pricing. First, it examines three policy dimensions that underlie pricing: the economic arguments that motivate it, the technological ...

  7. Towards understanding the impacts of congestion pricing on urban trucking

    E-Print Network [OSTI]

    Waliszewski, Janine M

    2005-01-01T23:59:59.000Z

    Understanding policy impacts on freight is essential for planners who have overlooked this transport group in the past and must evaluate new congestion alleviation policies with respect to regional economic and social ...

  8. New Insights on congested part of the FD calibration

    E-Print Network [OSTI]

    Bertini, Robert L.

    New Insights on congested part of the FD calibration from Loop Detector Data Nicolas Chiabaut an automatic method that will permits efficient on-line calibration procedure #12;Outline of the paper

  9. 2009 National Electric Transmission Congestion Study- Atlanta Workshop

    Broader source: Energy.gov [DOE]

    On July 29, 2008, DOE hosted a regional pre-study workshop in Atlanta, GA to receive input and suggestions concerning the 2009 National Electric Transmission Congestion Study. The agenda and full...

  10. Challenges to Congestion Control Posed by Concurrent Weibo Gong 2

    E-Print Network [OSTI]

    Liu, Yong

    Challenges to Congestion Control Posed by Concurrent Downloads Yong Liu 1 Weibo Gong 2 Abstract.S.A. e-mail: gong@ecs.umass.edu developments of new network applications which should be taken

  11. 2009 National Electric Transmission Congestion Study- Oklahoma City Workshop

    Broader source: Energy.gov [DOE]

    On June 18, 2008, DOE hosted a regional pre-study workshop in Oklahoma City, OK to receive input and suggestions concerning the 2009 National Electric Transmission Congestion Study. The agenda,...

  12. A congestion control scheme for wireless sensor networks

    E-Print Network [OSTI]

    Xiong, Yunli

    2005-08-29T23:59:59.000Z

    In wireless sensor networks (WSN), nodes have very limited power due to hardware constraints. Packet losses and retransmissions resulting from congestion cost precious energy and shorten the lifetime of sensor nodes. This problem motivates the need...

  13. RoadRunner: Infrastructure-less vehicular congestion control

    E-Print Network [OSTI]

    Gao, Jason Hao

    RoadRunner is an in-vehicle app for traffic congestion control without costly roadside infrastructure, instead judiciously harnessing vehicle-to-vehicle communications, cellular connectivity, and onboard computation and ...

  14. Measuring congestion and emissions : a network model for Mexico City

    E-Print Network [OSTI]

    Amano, Yasuaki Daniel, 1978-

    2004-01-01T23:59:59.000Z

    Congestion is a major problem for the major cities of today. It reduces mobility, slows economic growth, and is a major cause of emissions. Vehicles traveling at slow speeds emit significantly more pollutants than vehicles ...

  15. Evaluation of explicit congestion control for high-speed networks

    E-Print Network [OSTI]

    Jain, Saurabh

    2009-05-15T23:59:59.000Z

    in networking technology, recent pursuit to do better flow control of network traffic has led to the emergence of several explicit-feedback congestion control methods. As a first step towards understanding these methods, we analyze the stability and transient...

  16. Political obstacles to adopting congestion pricing in New York City

    E-Print Network [OSTI]

    Lynch, Patrick (Patrick Michael)

    2010-01-01T23:59:59.000Z

    In April 2007, New York City's Mayor Bloomberg released PlaNYC, a broad ranging set of planning initiatives for the city. A centerpiece of the plan was a congestion-pricing proposal for the downtown core in Manhattan. The ...

  17. 2009 National Electric Transmission Congestion Study- Hartford Workshop

    Broader source: Energy.gov [DOE]

    On July 9, 2008, DOE hosted a regional pre-study workshop in Hartford, CT to receive input and suggestions concerning the 2009 National Electric Transmission Congestion Study. The agenda, full...

  18. Using Map Matching for an Online Traffic Congestion Application 

    E-Print Network [OSTI]

    Day, Madeleine

    2010-11-24T23:59:59.000Z

    Optimising the flow of traffic on road networks can be achieved through sharing information about congestion events to road users. Using GPS sensors to track vehicle movements can provide information to monitor speeds ...

  19. 3D Module Placement for Congestion and Power Noise Reduction

    E-Print Network [OSTI]

    Lim, Sung Kyu

    3D Module Placement for Congestion and Power Noise Reduction Jacob R. Minz School of ECE Georgia that copies are not made or distributed for profit or commercial advantage and that copies bear this notice

  20. Congestive heart failure: treat the disease, not the symptom: return to normalcy/Part II--the experimental approach.

    E-Print Network [OSTI]

    Buckberg, Gerald D

    2007-01-01T23:59:59.000Z

    Title: Congestive heart failure: treat the disease not theTITLE: Congestive heart failure: treat the disease not theGD. Congestive heart failure: treat the disease, not the

  1. Roberts Union DRIVING DIRECTIONS

    E-Print Network [OSTI]

    Wilson, Herb

    the pond onto Bixler Drive, across from the Millwright Steam Plant and just before the outdoor track (Washington Street). Take your first left onto Bixler Drive, after you pass the outdoor track and football

  2. Nordic electricity congestion's arrangement as a model for Europe : physical constraints or operators' opportunism?

    E-Print Network [OSTI]

    Glachant, Jean-Michel

    2002-01-01T23:59:59.000Z

    Congestion on power grids seems a physical reality, a "hard" fact easy to check. Our paper models a different idea: congestion signal may be distorted by transmission system operators (TSOs), which puts the European ...

  3. Freight Distribution Tours in Congested Urban Areas: Characteristics and Implications for Carriers' Operations and

    E-Print Network [OSTI]

    Bertini, Robert L.

    trip generation, distribution, or network assignment are scant or nonexistent [1]. ConfidentialityFreight Distribution Tours in Congested Urban Areas: Characteristics and Implications for Carriers;FREIGHT DISTRIBUTION TOURS IN CONGESTED URBAN AREAS: CHARACTERISTICS AND IMPLICATIONS FOR CARRIERS

  4. Economical Aspects of Adjustable Speed Drives in Pumping Systems

    E-Print Network [OSTI]

    Hovstadius, G.

    Speed variations of pumps have become increasingly popular as the technology to produce variable frequency drives has progressed. Variable speed drives have many advantages compared to throttle valves when it comes to regulation of flow. They offer...

  5. Congestion Avoidance based on Light-Weight Buffer Management in Sensor Networks

    E-Print Network [OSTI]

    Chen, Shigang

    , congestion may occur as data packets converge toward a sink. Congestion causes energy waste, throughput1 Congestion Avoidance based on Light-Weight Buffer Management in Sensor Networks Shigang Chen, and above all, energy supply. When a critical event triggers a surge of data generated by the sensors

  6. A Game-theoretic Approach to Leasing Agreements can Reduce Congestion

    E-Print Network [OSTI]

    Rosenschein, Jeff

    . These include air, ground, and river pollution, an increase in accidents, the depletion of global oil reserves in many countries. Incentivized to drive as much as possible, their users contribute to pollution

  7. Transportation Center Seminar "Cost Recovery from Congestion Tolls with

    E-Print Network [OSTI]

    Bustamante, Fabián E.

    of Business University of British Columbia Thurs. Feb. 28, 2013 4:00 ­ 5:00 pm Location: Transportation Center discounted investment costs over a facility's lifetime. If the marginal cost of investment is constant of Business at UBC. His research interests include road pricing, traffic congestion models, financing roads

  8. A FRAMEWORK FOR TRANSMISSION CONGESTION MANAGEMENT ANALYSIS MINGHAI LIU

    E-Print Network [OSTI]

    Gross, George

    congestion, the market-based mechanisms using the locational marginal prices (LMPs) have become the most transmission services and compute the pricing for those services. The inherent volatility of electricity markets introduces uncertainty in the LMPs and consequently, in transmission pricing. In order to protect

  9. Lyapunov-Based Stability Analysis for REM Congestion Control

    E-Print Network [OSTI]

    Low, Steven H.

    Lyapunov-Based Stability Analysis for REM Congestion Control Orhan C¸ . IMER, Tamer BAS¸AR Abstract-- This paper investigates convergence properties of basic REM flow control algorithm via Lyapunov functions a Lyapunov argument. Extension to the general multi-link model is discussed as well. I. INTRODUCTION

  10. Optimization of condensing gas drive

    E-Print Network [OSTI]

    Lofton, Larry Keith

    1977-01-01T23:59:59.000Z

    - cal, undersaturated reservoir with gas being injected into the crest and oil being produced from the base of the structure. Fractional oil re- covery at gas breakthrough proved to be less sensitive to changes in oil withdrawal rates as the gas... injection pressure was increased. The validity of the model was established by accurately simulating several low pressure gas drives conducted in the laboratory. Oil recoveries at gas breakthrough using the model compared closely with those recoveries...

  11. Piezoelectric drive circuit

    DOE Patents [OSTI]

    Treu, C.A. Jr.

    1999-08-31T23:59:59.000Z

    A piezoelectric motor drive circuit is provided which utilizes the piezoelectric elements as oscillators and a Meacham half-bridge approach to develop feedback from the motor ground circuit to produce a signal to drive amplifiers to power the motor. The circuit automatically compensates for shifts in harmonic frequency of the piezoelectric elements due to pressure and temperature changes. 7 figs.

  12. Piezoelectric drive circuit

    DOE Patents [OSTI]

    Treu, Jr., Charles A. (Raymore, MO)

    1999-08-31T23:59:59.000Z

    A piezoelectric motor drive circuit is provided which utilizes the piezoelectric elements as oscillators and a Meacham half-bridge approach to develop feedback from the motor ground circuit to produce a signal to drive amplifiers to power the motor. The circuit automatically compensates for shifts in harmonic frequency of the piezoelectric elements due to pressure and temperature changes.

  13. Predictability of road traffic and congestion in urban areas

    E-Print Network [OSTI]

    Wang, Jingyuan; Li, Jing; Li, Chao; Xiong, Zhang; Wang, Wen-Xu

    2014-01-01T23:59:59.000Z

    Mitigating traffic congestion on urban roads, with paramount importance in urban development and reduction of energy consumption and air pollution, depends on our ability to foresee road usage and traffic conditions pertaining to the collective behavior of drivers, raising a significant question: to what degree is road traffic predictable in urban areas? Here we rely on the precise records of daily vehicle mobility based on GPS positioning device installed in taxis to uncover the potential daily predictability of urban traffic patterns. Using the mapping from the degree of congestion on roads into a time series of symbols and measuring its entropy, we find a relatively high daily predictability of traffic conditions despite the absence of any a priori knowledge of drivers' origins and destinations and quite different travel patterns between weekdays and weekends. Moreover, we find a counterintuitive dependence of the predictability on travel speed: the road segment associated with intermediate average travel ...

  14. Expected Technological Innovation to Drive Global Market for...

    Open Energy Info (EERE)

    Innovation to Drive Global Market for Microturbine Systems Home > Groups > Increase Natural Gas Energy Efficiency John55364's picture Submitted by John55364(95) Contributor...

  15. US DRIVE Driving Research and Innovation for Vehicle Efficiency...

    Office of Environmental Management (EM)

    More Documents & Publications US DRIVE Fuel Pathway Integration Technical Team Roadmap Hydrogen Program Goal-Setting Methodologies Report to Congress US DRIVE Hydrogen...

  16. Does Doctrine Drive Technology or Does Technology Drive Doctrine?

    E-Print Network [OSTI]

    Blasko, Dennis

    2010-01-01T23:59:59.000Z

    Brief No. 4 September 2010 Does Doctrine Drive Technology orDoes Technology Drive Doctrine? Dennis Blasko Summary Wthat emphasizes strategy over technology and may hold some

  17. Development and validation of an areawide congestion index using Intelligent Transportation Systems data

    E-Print Network [OSTI]

    Albert, Luke Perrone

    2000-01-01T23:59:59.000Z

    REVIEW TABLE OF CONTENTS Page . ut , tv vn tx Advanced Traffic Management Systems . Comparison of Loop Detectors and Road Tubes Loop Detector Data Loop Detector Data Quahty Control. Invalid Data. Missing Data. . Congestion. Congestion... 17 19 19 25 27 27 29 34 36 DATA COMPARABILITY AND ACCURACY RESULTS . . . . . Data Comparability Results ATR S184 Comparisons. ATR S185 Comparisons . Summary Data Accuracy Results. AREAWIDE CONGESTION INDEX RESULTS. Disaggregate Data...

  18. Ride and Drive Webinar

    Broader source: Energy.gov [DOE]

    Listen to this webinar and follow along using the slides below to learn how on-site plug-in electric vehicle (PEV) Ride and Drives can create value for your organization, your employees, and your...

  19. The Accident Externality from Driving

    E-Print Network [OSTI]

    Edlin, Aaron S.; Karaca-Mandic, Pinar

    2007-01-01T23:59:59.000Z

    Sex-Divided Mile- age, Accident, and Insurance Cost DataMandic. 2003. “The Accident Externality from Driving. ”Insurance Res. Council. accident externality from driving

  20. Direct drive wind turbine

    DOE Patents [OSTI]

    Bywaters, Garrett; Danforth, William; Bevington, Christopher; Jesse, Stowell; Costin, Daniel

    2006-10-10T23:59:59.000Z

    A wind turbine is provided that minimizes the size of the drive train and nacelle while maintaining the power electronics and transformer at the top of the tower. The turbine includes a direct drive generator having an integrated disk brake positioned radially inside the stator while minimizing the potential for contamination. The turbine further includes a means for mounting a transformer below the nacelle within the tower.

  1. Direct drive wind turbine

    DOE Patents [OSTI]

    Bywaters, Garrett; Danforth, William; Bevington, Christopher; Stowell, Jesse; Costin, Daniel

    2006-07-11T23:59:59.000Z

    A wind turbine is provided that minimizes the size of the drive train and nacelle while maintaining the power electronics and transformer at the top of the tower. The turbine includes a direct drive generator having an integrated disk brake positioned radially inside the stator while minimizing the potential for contamination. The turbine further includes a means for mounting a transformer below the nacelle within the tower.

  2. Direct drive wind turbine

    DOE Patents [OSTI]

    Bywaters, Garrett Lee; Danforth, William; Bevington, Christopher; Stowell, Jesse; Costin, Daniel

    2006-09-19T23:59:59.000Z

    A wind turbine is provided that minimizes the size of the drive train and nacelle while maintaining the power electronics and transformer at the top of the tower. The turbine includes a direct drive generator having an integrated disk brake positioned radially inside the stator while minimizing the potential for contamination. The turbine further includes a means for mounting a transformer below the nacelle within the tower.

  3. Direct drive wind turbine

    DOE Patents [OSTI]

    Bywaters, Garrett; Danforth, William; Bevington, Christopher; Jesse, Stowell; Costin, Daniel

    2007-02-27T23:59:59.000Z

    A wind turbine is provided that minimizes the size of the drive train and nacelle while maintaining the power electronics and transformer at the top of the tower. The turbine includes a direct drive generator having an integrated disk brake positioned radially inside the stator while minimizing the potential for contamination. The turbine further includes a means for mounting a transformer below the nacelle within the tower.

  4. From: Carol Munson Ross To: Congestion Study Comments Subject:

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport inEnergy0.pdf Flash2010-60.pdf2 DOEScienceNIETCMunson Ross To: Congestion

  5. From: David Newacheck To: Congestion Study Comments Date:

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport inEnergy0.pdf Flash2010-60.pdf2 DOEScienceNIETCMunsonNewacheck To: Congestion

  6. From: John D. Bixenman To: Congestion Study Comments Subject:

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport inEnergy0.pdf Flash2010-60.pdf2Jessi O"Bannon To: Congestion StudyJohn D.

  7. From: Joyce Crommett To: Congestion Study Comments Subject:

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport inEnergy0.pdf Flash2010-60.pdf2Jessi O"Bannon To: Congestion StudyJohn

  8. From: Joyce Wortmann To: Congestion Study Comments Subject:

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport inEnergy0.pdf Flash2010-60.pdf2Jessi O"Bannon To: Congestion

  9. From: Justin Imhof To: Congestion Study Comments Subject:

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport inEnergy0.pdf Flash2010-60.pdf2Jessi O"Bannon To: CongestionJustin Imhof

  10. Electric-Drive Vehicle engineering

    E-Print Network [OSTI]

    Berdichevsky, Victor

    Electric-Drive Vehicle engineering COLLEGE of ENGINEERING Electric-driveVehicleEngineering engineers for 80 years t Home to nation's first electric-drive vehicle engineering program and alternative-credit EDGE Engineering Entrepreneur Certificate Program is a great addition to an electric-drive vehicle

  11. Abstract--While the connectivity, sensing, and computational capabilities of today's smartphones have increased, congestion in

    E-Print Network [OSTI]

    Simunic, Tajana

    to pollution in the air. In a traditional pollution monitoring system, a handful of sites across a region of pollution with error of maximum 0.5 ppm, a negligible amount for the application of interest. Index Terms of interest are carefully selected for the deployment of air quality monitoring equipment [3]. However

  12. IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 19, NO. 2, MAY 2004 889 Congestion Management and Transmission Rights in

    E-Print Network [OSTI]

    Dixon, Juan

    and Transmission Rights in Centralized Electric Markets Roberto Méndez and Hugh Rudnick, Fellow, IEEE Abstract implementation unattractive. Index Terms--Congestion management, electric markets, nodal pricing, transmission by congestions in transmission lines. These rights can have physical or financial attributes

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

    E-Print Network [OSTI]

    Lobyaem, Sonchai

    2006-10-30T23:59:59.000Z

    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 ...

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

    E-Print Network [OSTI]

    Lobyaem, Sonchai

    2006-10-30T23:59:59.000Z

    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...

  15. Marginal costs of freeway traffic congestion with on-road pollution exposure externality

    E-Print Network [OSTI]

    Bertini, Robert L.

    Marginal costs of freeway traffic congestion with on-road pollution exposure externality Alexander August 2012 Received in revised form 6 March 2013 Accepted 23 September 2013 Keywords: External costs Traffic congestion On-road In-vehicle Pollution exposure Vehicle emissions a b s t r a c t The health cost

  16. Accumulation-based Congestion Control Yong Xia, David Harrison, Shivkumar Kalyanaraman,

    E-Print Network [OSTI]

    Kalyanaraman, Shivkumar

    1 Accumulation-based Congestion Control Yong Xia, David Harrison, Shivkumar Kalyanaraman, Kishore mechanism and uses accumulation, buffered packets of a flow inside the network routers, as a conges- tion accumulation- based congestion control (ACC), which fits into the nonlin- ear optimization framework proposed

  17. Real time grid congestion management in presence of high penetration of wind energy

    E-Print Network [OSTI]

    Boyer, Edmond

    of wind generation [2]. In the literature, many methods have been reported for congestion management to element outage or random production as is wind generation. hal-00422160,version1-6Oct2009 Author related to wind generation [8]. This is due to the difficulties to predict exact congestion magnitude

  18. UNCORRECTED 2 Congestion rents and FTR evaluations in mixed-pool-bilateral systems

    E-Print Network [OSTI]

    Gross, George

    Available online xxxx 13 Keywords: 14 Locational marginal prices 15 Congestion management 16 Congestionlation of appropriate locational marginal prices (LMPs). This requirement is particularly acute when to manage congestion, 49 the market-based mechanisms using the locational marginal prices 50 (LMPs) [2

  19. Transportation Cost and Benefit Analysis Congestion Costs Victoria Transport Policy Institute (www.vtpi.org)

    E-Print Network [OSTI]

    O'Donnell, Tom

    Transportation Cost and Benefit Analysis ­ Congestion Costs Victoria Transport Policy Institute congestion is considered one of the most significant transportation problems. The capacity of a road depends, Fundamentals of Traffic Engineering, 13th Edition, Institute of Transportation Studies, UBC (Berkeley; www

  20. Distinguishing congestion and error losses: an ECN/ELN based scheme

    E-Print Network [OSTI]

    Kamakshisundaram, Raguram

    2001-01-01T23:59:59.000Z

    error rates, like wireless links, packets are lost more due to error than due to congestion. But TCP does not differentiate between error and congestion losses and hence reduces the sending rate for losses due to error also, which unnecessarily reduces...

  1. CONGESTION IN THE ISO-NE ELECTRICITY MARKETS ANNA BARBARA IHRIG

    E-Print Network [OSTI]

    Gross, George

    CONGESTION IN THE ISO-NE ELECTRICITY MARKETS BY ANNA BARBARA IHRIG THESIS Advisor: Prof. George in charge of operation and control, the ISO-NE. We describe how the ISO-NE administers the energy market in causing congestion is analyzed; no significant correlation was found. In addition, the impacts of the ISO

  2. Can ECN Be Used to Differentiate Congestion Losses from Wireless Sa^ad Biaz Xia Wang

    E-Print Network [OSTI]

    Can ECN Be Used to Differentiate Congestion Losses from Wireless Losses? Sa^ad Biaz Xia Wang.auburn.edu Technical Report CSSE04-04 May 13, 2004 Abstract TCP was designed and tuned to work well on networks where losses are mainly congestion losses. The performance of TCP decreases dramatically when a TCP connection

  3. "De-randomizing" Congestion Losses To Improve TCP Performance over Wired-Wireless

    E-Print Network [OSTI]

    "De-randomizing" Congestion Losses To Improve TCP Performance over Wired-Wireless Networks Sa-Champaign sbiaz@eng.auburn.edu nhv@crhc.uiuc.edu Technical Report CSSE03-10 (October 30, 2003) Abstract Currently, a TCP sender considers all losses as congestion signals and reacts to them by throt- tling its sending

  4. Differentiated Services: A New Direction for Distinguishing Congestion Losses from Wireless Losses

    E-Print Network [OSTI]

    Differentiated Services: A New Direction for Distinguishing Congestion Losses from Wireless Losses Sa^ad Biaz Nitin H. Vaidya ¡£¢ sbiaz@eng.auburn.edu nhv@crhc.uiuc.edu February 21, 2003 Technical Report # CSSE03-02 Abstract Currently, a TCP sender considers all losses as congestion signals and reacts

  5. Low voltage vertical recording preamplifier for hard disk drives

    E-Print Network [OSTI]

    Mellachervu, Ramachandra Murthy

    2004-11-15T23:59:59.000Z

    , with increased demand for battery powered devices such as laptops, MP3 players, personal video recorders, andmanyother wireless hand-held devices, power consumption has become an important design parameter.Furthermore, in order to continue to increase drive...

  6. An Accumulation-based Congestion Control Model Yong Xia, David Harrison, Shivkumar Kalyanaraman, Kishore Ramachandran, Arvind Venkatesan

    E-Print Network [OSTI]

    Kalyanaraman, Shivkumar

    An Accumulation-based Congestion Control Model Yong Xia, David Harrison, Shivkumar Kalyanaraman and proposes a model to use accumulation, buffered packets of a flow inside network routers, as a congestion measure on which a family of congestion control schemes can be derived. We call this model accumulation

  7. Drive laser Photocathode

    E-Print Network [OSTI]

    Anlage, Steven

    Drive laser Gun cavity Scale 2" 3"0 1" Photocathode Schematic Overview of a Free Electron Laser Steel Sleeve Compressed Cs2CrO4:Ti Pellet (0.725g) 1.27 cm Nickel-Assisted Hermetic Braze #12;Foundation

  8. Non-linear Dynamics, Emergent Behaviors and Controlled Expansions: Towards Effective Modeling of the Congested Traffic

    E-Print Network [OSTI]

    Bo Yang; Xihua Xu; John Z. F. Pang; Christopher Monterola

    2015-04-06T23:59:59.000Z

    We propose a framework for constructing microscopic traffic models from microscopic acceleration patterns that can in principle be experimental measured and proper averaged. The exact model thus obtained can be used to justify the consistency of various popular models in the literature. Assuming analyticity of the exact model, we suggest that a controlled expansion around the constant velocity, uniform headway "ground state" is the proper way of constructing various different effective models. Assuming a unique ground state for any fixed average density, we discuss the universal properties of the resulting effective model, focusing on the emergent quantities of the coupled non-linear ODEs. These include the maximum and minimum headway that give the coexistence curve in the phase diagram, as well as an emergent intrinsic scale that characterizes the strength of interaction between clusters, leading to non-trivial cluster statistics when the unstable ground state is randomly perturbed. Utilizing the universal properties of the emergent quantities, a simple algorithm for constructing an effective traffic model is also presented. The algorithm tunes the model with statistically well-defined quantities extracted from the flow-density plot, and the resulting effective model naturally captures and predicts many quantitative and qualitative empirical features of the highway traffic, especially in the presence of an on-ramp bottleneck. The simplicity of the effective model provides strong evidence that stochasticity, diversity of vehicle types and modeling of complicated individual driving behaviors are \\emph{not} fundamental to many observations of the complex spatiotemporal patterns in the real traffic dynamics. We also propose the nature of the congested phase can be well characterized by the long lasting transient states of the effective model, from which the wide moving jams evolve.

  9. CONGESTIVE HEART FAILURE Congestive Heart Failure: Condition in which the heart muscle can not pump enough

    E-Print Network [OSTI]

    ; Orthopnea; Paroxysmal Nocturnal Dyspnea; Weight gain; Edema; Fatigue; Malaise; Cough or wheeze; Palpitations enough air in or out of lungs); Faster breathing; Noisy breathing; Cough which often worsens at night mucus production, increases the severity of asthma attacks, and lessens the effectiveness of a cough

  10. Variable Frequency Pump Drives

    E-Print Network [OSTI]

    Karassik, I. J.; Petraccaro, L. L.; McGuire, J. T.

    . In a conventional pump and driver arrangement (for example, a centrifugal pump coupled to an AC induction motor'with no speed control provision), the motor runs at. a constant speed, which is determined by the incoming line frequency, and the pump... when it is needed. LONG RANGE DESIGN TRENDS The growing use of variable-frequency electric motor drives will permit the integration of 60 and 50 cycle pump lines. One important concern for future improvements is the growing possibility...

  11. Age and cross-cultural comparison of drivers' cognitive workload and performance in simulated urban driving

    E-Print Network [OSTI]

    Son, J.

    Driving demands significant psychomotor attention and requires even more when drivers are engaged in secondary tasks that increase cognitive workload and divert attention. It is well established that age influences driving ...

  12. Vehicle Technologies Office: 2014 Electric Drive Technologies...

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

    Electric Drive Technologies Annual Progress Report Vehicle Technologies Office: 2014 Electric Drive Technologies Annual Progress Report The Electric Drive Technologies research and...

  13. Incentive schemes for Internet congestion management: Raffles versus time-of-day pricing

    E-Print Network [OSTI]

    Loiseau, Patrick

    The Internet is plagued with congestion problems of growing severity which are worst at peak periods. In this paper, we compare two schemes that incentivize users to shift part of their usage from the peak-time to the ...

  14. Using tactical flight level resource allocation to alleviate congested en-route airspace

    E-Print Network [OSTI]

    Abad, Antonio Manuel, 1976-

    2004-01-01T23:59:59.000Z

    A motivation exists to formulate and implement new tools and methodologies to address the problem of congestion in the National Airspace System (NAS). This thesis presents a novel methodology for allocating aircraft among ...

  15. Critical enhancements of a dynamic traffic assignment model for highly congested, complex urban network

    E-Print Network [OSTI]

    Wei, Zheng, S.M. Massachusetts Institute of Technology

    2010-01-01T23:59:59.000Z

    To accurately replicate the highly congested traffic situation of a complex urban network, significant challenges are posed to current simulation-based dynamic traffic assignment (DTA) models. This thesis discusses these ...

  16. Firefighters at Lab on June 5 for Training Program; Expect Congestion...

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

    Firefighters at Lab on June 5 for Training Program; Expect Congestion in CC Parking Lot, Front Atrium Nearly 100 Newport News Firefighters will be at Jefferson Lab on Friday, June...

  17. Performance of Quantized Congestion Notification in TCP Incast in Data Centers

    E-Print Network [OSTI]

    Devkota, Prajjwal Prasad

    2011-08-08T23:59:59.000Z

    This thesis analyzes the performance of Quantized Congestion Notification (QCN) during data access from clustered servers in data centers. The reasons why QCN does not perform adequately in these situations are examined and several modifications...

  18. Distributed Resolution of Network Congestion and Potential Deadlock Using Reservation-based Scheduling

    E-Print Network [OSTI]

    Pinkston, Timothy M.

    Distributed Resolution of Network Congestion and Potential Deadlock Using Reservation multiprocessor servers and loosely coupled (and, oftentimes, heterogeneous) distributed network Abstract Efficient and reliable communication is essential for achieving high performance in a networked

  19. Price of Anarchy for Non-atomic Congestion Games with Stochastic ...

    E-Print Network [OSTI]

    2013-10-18T23:59:59.000Z

    Oct 18, 2013 ... design for congestion games. Roughgarden and ...... where m ? N is the power degree, (r ? 1)!! is the double factorial of r ? 1,. i.e., (r ? 1)!

  20. A Utility-Based Congestion Control Scheme for Internet-Style Networks with Delay1

    E-Print Network [OSTI]

    Alpcan, Tansu

    @control.csl.uiuc.edu 2 Coordinated Science Laboratory and Department of Electrical and Computer Engineering, University versions of TCP as an indication of congestion. In this paper, however, we propose and analyze a pric- ing

  1. Base drive circuit

    DOE Patents [OSTI]

    Lange, A.C.

    1995-04-04T23:59:59.000Z

    An improved base drive circuit having a level shifter for providing bistable input signals to a pair of non-linear delays. The non-linear delays provide gate control to a corresponding pair of field effect transistors through a corresponding pair of buffer components. The non-linear delays provide delayed turn-on for each of the field effect transistors while an associated pair of transistors shunt the non-linear delays during turn-off of the associated field effect transistor. 2 figures.

  2. Base drive circuit

    DOE Patents [OSTI]

    Lange, Arnold C. (Livermore, CA)

    1995-01-01T23:59:59.000Z

    An improved base drive circuit (10) having a level shifter (24) for providing bistable input signals to a pair of non-linear delays (30, 32). The non-linear delays (30, 32) provide gate control to a corresponding pair of field effect transistors (100, 106) through a corresponding pair of buffer components (88, 94). The non-linear delays (30, 32) provide delayed turn-on for each of the field effect transistors (100, 106) while an associated pair of transistors (72, 80) shunt the non-linear delays (30, 32) during turn-off of the associated field effect transistor (100, 106).

  3. Next Generation Environmentally Friendly Driving Feedback Systems...

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

    Environmentally Friendly Driving Feedback Systems Research and Development Next Generation Environmentally Friendly Driving Feedback Systems Research and Development 2012 DOE...

  4. Optimal information transmission in organizations: search and congestion

    SciTech Connect (OSTI)

    Arenas, A.; Cabrales, A.; Danon, L.; Diaz-Guilera, A.; Guimera, R.; Vega-Redondo, F.

    2008-01-01T23:59:59.000Z

    We propose a stylized model of a problem-solving organization whose internal communication structure is given by a fixed network. Problems arrive randomly anywhere in this network and must find their way to their respective specialized solvers by relying on local information alone. The organization handles multiple problems simultaneously. For this reason, the process may be subject to congestion. We provide a characterization of the threshold of collapse of the network and of the stock of floating problems (or average delay) that prevails below that threshold. We build upon this characterization to address a design problem: the determination of what kind of network architecture optimizes performance for any given problem arrival rate. We conclude that, for low arrival rates, the optimal network is very polarized (i.e. star-like or centralized), whereas it is largely homogeneous (or decentralized) for high arrival rates. These observations are in line with a common transformation experienced by information-intensive organizations as their work flow has risen in recent years.

  5. Driving Demand | Department of Energy

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

    strategies, results achieved to date, and advice for other programs. Driving Demand for Home Energy Improvements. This guide, developed by the Lawrence Berkeley National...

  6. Proceedings of the March 29, 2006 Conference for the 2006 National Electric Transmission Congestion Study- Session 2

    Broader source: Energy.gov [DOE]

    A public technical conference on the 2006 congestion study and criteria for designating National Interest Electric Tranmission Corridors was held on March 29, 2006.

  7. Proceedings of the March 29, 2006 Conference for the 2006 National Electric Transmission Congestion Study- Session 1

    Broader source: Energy.gov [DOE]

    A public technical conference on the 2006 congestion study and criteria for designating National Interest Electric Tranmission Corridors was held on March 29, 2006. 

  8. Proceedings of the March 29, 2006 Conference for the 2006 National Electric Transmission Congestion Study- Session 3

    Broader source: Energy.gov [DOE]

    A public technical conference on the 2006 congestion study and criteria for designating National Interest Electric Tranmission Corridors was held on March 29, 2006.

  9. Natural Gas Infrastructure Implications of Increased Demand from...

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

    the potential infrastructure needs of the U.S. interstate natural gas pipeline transmission system across a range of future natural gas demand scenarios that drive increased...

  10. Mechanical front wheel drive tractors: a field performance study

    E-Print Network [OSTI]

    Babacz, William Adam

    1986-01-01T23:59:59.000Z

    . . . . . . . . . . . . . . . . . . . . . . . . . Comparison of 2WD and NFWD Tractors . . . . . . . . . . . . . . . . . . Comparison of NFWD Tractors Operating in FWA and 2WO Modes III TRACTOR PERFORNANCE NONITORING SYSTEM Instrumentation System Rear Axle Torque . Front Axle Driveline Torque Front...-sized tractors and may be operated with the mechanical front wheel drive engaged in a front wheel assist (FWA) mode or disengaged in a two-wheel drive (2WD) mode. The advertised benefits of NFWD are increased traction and reduced fuel consumption. Agricultural...

  11. Grand Challenge Portfolio: Driving Innovations in Industrial...

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

    Documents & Publications Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January 2011 - pg 8 Grand Challenge Portfolio: Driving Innovations in...

  12. Direct drive field actuator motors

    DOE Patents [OSTI]

    Grahn, A.R.

    1998-03-10T23:59:59.000Z

    A positive-drive field actuator motor is described which includes a stator carrying at least one field actuator which changes in dimension responsive to application of an energy field, and at least one drive shoe movable by the dimensional changes of the field actuator to contact and move a rotor element with respect to the stator. Various embodiments of the motor are disclosed, and the rotor element may be moved linearly or arcuately. 62 figs.

  13. DRIVING IN FORCE: WHY THE U.S. MILITARY COMMUTES BY AUTOMOBILE1

    E-Print Network [OSTI]

    Lin, C.-Y. Cynthia

    congestion, air pollution, global climate change, traffic accidents, and dependence on foreign supplies

  14. Low backlash direct drive actuator

    DOE Patents [OSTI]

    Kuklo, T.C.

    1994-10-25T23:59:59.000Z

    A low backlash direct drive actuator is described which comprises a motor such as a stepper motor having at least 200 steps per revolution; a two part hub assembly comprising a drive hub coaxially attached to the shaft of the motor and having a plurality of drive pins; a driven hub having a plurality of bores in one end thereof in alignment with the drive pins in the drive hub and a threaded shaft coaxially mounted in an opposite end of the driven hub; and a housing having a central bore therein into which are fitted the drive hub and driven hub, the housing having a motor mount on one end thereof to which is mounted the stepper motor, and a closed end portion with a threaded opening therein coaxial with the central bore in the housing and receiving therein the threaded shaft attached to the driven hub. Limit switches mounted to the housing cooperate with an enlarged lip on the driven hub to limit the lateral travel of the driven hub in the housing, which also acts to limit the lateral travel of the threaded shaft which functions as a lead screw. 10 figs.

  15. The Impact of Imperfect Permit Market on Congested Electricity Market Equilibrium

    E-Print Network [OSTI]

    Oren, Shmuel S.

    The Impact of Imperfect Permit Market on Congested Electricity Market Equilibrium Tanachai market in conjunction with a permit market to study such interactions. The concept of conjectural variations is proposed to account for imperfect competition in permit market. The model is then applied

  16. Strong and Pareto Price of Anarchy in Congestion Games Steve Chien

    E-Print Network [OSTI]

    Sinclair, Alistair

    their strategies so as to improve all of their costs. The strong price of anarchy (see, e.g., [3]) is the ratioStrong and Pareto Price of Anarchy in Congestion Games Steve Chien Alistair Sinclair§ September 21 games, focusing on the relationships between the price of anarchy for these equilibria

  17. Smart Engineering System Design, vol. 4:243-252, 2002 NETWORK CONGESTION ARBITRATION AND SOURCE PROBLEM

    E-Print Network [OSTI]

    Varela, Carlos

    to address the problem. However, these tools simply give the network administrator a great deal1 Smart Engineering System Design, vol. 4:243-252, 2002 NETWORK CONGESTION ARBITRATION AND SOURCE PROBLEM PREDICTION USING NEURAL NETWORKS J. ALAN BIVENS Computer Science Rensselaer Polytechnic Institute

  18. Managing Cellular Congestion Using Incentives Jagadeesh M. Dyaberi, Ben Parsons, Karthik Kannan, Vijay S. Pai,

    E-Print Network [OSTI]

    Greenberg, Albert

    . Our results indicate a high level of compliance with economic incentives and disincentives. Detailed/or punishments to help reduce network congestion. We found a high level of compliance with economic incentives several stud- ies on using economic incentives to help shape consumer behaviors towards more efficient use

  19. Adaptive Congestion Control in Broadband-ISDN: High Throughput with Sustained Quality of Service

    E-Print Network [OSTI]

    Pitsillides, Andreas

    ). The controller regulates QoS by manipulating the flow of controllable traffic into the network. Controllability. In this paper we use an adaptive feedback and feedforward control system to maximise throughput such that the QoAdaptive Congestion Control in Broadband-ISDN: High Throughput with Sustained Quality of Service

  20. Dynamic Versus Steady-State Modeling of FACTS Controllers in Transmission Congestion

    E-Print Network [OSTI]

    Cañizares, Claudio A.

    benchmark system is used to illustrate and compare the effect on locational marginal prices and transmission marginal prices obtained from stability-constrained auction models when dynamic and steady state FACTS discusses the effect on transmission congestion management and pricing of dynamic and steady- state models

  1. On the Use of Fixed Point Approximations to Study Reliable Protocols over Congested Links

    E-Print Network [OSTI]

    network operation? iii) What are the sustainable values of link utilization without the risk of network control features) over Internet congested links (the bottlenecks). Within this framework the analysis in a general framework, where only some very elementary properties of the protocols and the network come

  2. An active queue management scheme to contain high bandwidth flows at a congested router

    E-Print Network [OSTI]

    Smitha

    2001-01-01T23:59:59.000Z

    be incorporated in RED, an active queue management scheme. The proposed scheme possesses all the advantages of RED. In addition, it lowers the drop rates of short-lived flows and also those high bandwidth flows that reduce their sending rate when congestion...

  3. Economic Congestion Relief Across Multiple Regions Requires Tradable Physical Flow-gate Rights

    E-Print Network [OSTI]

    California at Berkeley. University of

    in the electric power industry in the US and around the world and the rapid growth of interregional trading of the Program on Workable Energy Regulation (POWER). POWER is a program of the University of California Energy of electric power require the development of procedures for coordinating congestion management across multiple

  4. Investigation of Density and Flow Relationships in Congested Trac Using Videogrammetric Data

    E-Print Network [OSTI]

    Ioerger, Thomas R.

    based on queuing theory [1], kinematic wave theory [2], kinetic theory [3], higher-order models [4], cellular automata [5], and car-following models [6], among others. These models, particularly the kinematic-wave congested conditions appear to propagate backward as \\constrictions" (waves of reduced ow), and we designed

  5. Optimum and equilibrium in assignment problems with congestion: mobile terminals association to base stations

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Optimum and equilibrium in assignment problems with congestion: mobile terminals association setting, this problem corresponds to the determination of the locations at which mobile terminals prefer power needed by the mobile terminals over the whole network (global optimum), and a user optimization

  6. Sender-Based Heuristics for Distinguishing Congestion Losses from Wireless Transmission Losses

    E-Print Network [OSTI]

    Vaidya, Nitin

    Sender-Based Heuristics for Distinguishing Congestion Losses from Wireless Transmission Losses Saad-3112, USA E-mail: saadb@cs.tamu.edu Phone : (409) 845-5007 Fax : (409) 847-8578 Technical Report #98-013 Abstract TCP is a popular transport protocol used in present-day internet. When packet losses occur, TCP

  7. A Bayesian Approach for TCP to Distinguish Congestion from Wireless Losses #

    E-Print Network [OSTI]

    A Bayesian Approach for TCP to Distinguish Congestion from Wireless Losses # Dhiman Barman,matta}@cs.bu.edu Technical Report BUCS­2003­030 Abstract. The Transmission Control Protocol (TCP) has been the protocol approach to infer at the source host the reason of a packet loss, whether conges­ tion or wireless

  8. Using End-to-End Statistics to Distinguish Congestion and Corruption Losses

    E-Print Network [OSTI]

    Vaidya, Nitin

    ://www.cs.tamu.edu/faculty/vaidya/mobile.html Technical Report 97-009 August 18, 1997 Abstract On wireless links, the rate of corruption losses canUsing End-to-End Statistics to Distinguish Congestion and Corruption Losses: A Negative Result Saad be signi cant, leading to poor TCP performance. The performance gets worse when these losses are mistaken

  9. SAIMD: A Novel False Congestion Detection Scheme in TCP over OBS Networks

    E-Print Network [OSTI]

    Shihada, Basem

    of the major technical barriers for all- optical networking. Burst losses occur in OBS networks due, Waterloo, Canada 2 Department of Electrical and Computer Engineering, University of Waterloo, Waterloo Switched (OBS) networks suffer from false congestion detection, where a packet loss event due to random

  10. Network Congestion Control of Airport Surface Operations Harshad Khadilkar

    E-Print Network [OSTI]

    Gummadi, Ramakrishna

    algorithm FAA Federal Aviation Administration Ns,l Number of stops on link l, modeled as a geometric random increases, resulting in increased taxi-out times. The FAA's Aviation System Performance Metrics (ASPM

  11. Drive reconfiguration mechanism for tracked robotic vehicle

    DOE Patents [OSTI]

    Willis, W. David (Idaho Falls, ID)

    2000-01-01T23:59:59.000Z

    Drive reconfiguration apparatus for changing the configuration of a drive unit with respect to a vehicle body may comprise a guide system associated with the vehicle body and the drive unit which allows the drive unit to rotate about a center of rotation that is located at about a point where the drive unit contacts the surface being traversed. An actuator mounted to the vehicle body and connected to the drive unit rotates the drive unit about the center of rotation between a first position and a second position.

  12. Anomalous-viscosity current drive

    DOE Patents [OSTI]

    Stix, T.H.; Ono, M.

    1986-04-25T23:59:59.000Z

    The present invention relates to a method and apparatus for maintaining a steady-state current for magnetically confining the plasma in a toroidal magnetic confinement device using anomalous viscosity current drive. A second aspect of this invention relates to an apparatus and method for the start-up of a magnetically confined toroidal plasma.

  13. Laser Direct Drive: Scientific Advances,

    E-Print Network [OSTI]

    1 Laser Direct Drive: Scientific Advances, Technical Achievements, and the Road To Fusion Energy energy gain ( 40) at 1 MJ laser energy · Advanced lasers/ target designs overcome uniformity requirements, medical applications) Gas laser medium is easy to cool (tough to break gas) Nike single beam focus #12

  14. Proceedings of the March 25-26, 2009 Conference for the 2009 National Electric Transmission Congestion Study- Session 2

    Broader source: Energy.gov [DOE]

    A technical workshop on the 2009 National Electric Transmission Congestion Study was held on March 25-26, 2009 to receive input from subject matter experts on the historical transmission data and...

  15. Proceedings of the March 25-26, 2009 Conference for the 2009 National Electric Transmission Congestion Study- Session 3

    Broader source: Energy.gov [DOE]

    A technical workshop on the 2009 National Electric Transmission Congestion Study was held on March 25-26, 2009 to receive input from subject matter experts on the historical transmission data and...

  16. Proceedings of the March 25-26, 2009 Conference for the 2009 National Electric Transmission Congestion Study- Session 1

    Broader source: Energy.gov [DOE]

    A technical workshop on the 2009 National Electric Transmission Congestion Study was held on March 25-26, 2009 to receive input from subject matter experts on the historical transmission data and...

  17. that minimizes vehicle emissions during design of routes in congested environments with time-dependent travel speeds, hard time windows,

    E-Print Network [OSTI]

    Bertini, Robert L.

    that minimizes vehicle emissions during design of routes in congested environments with time-dependent travel speeds, hard time windows, andcapacityconstraints.ThiscreatesanewtypeofVRP,theemissions vehicle routing problem (EVRP). BACKGROUND AND LITERATURE REVIEW There is extensive literature related to vehicle

  18. Proceedings of the March 25-26, 2009 Conference for the 2009 National Electric Transmission Congestion Study- Welcome

    Broader source: Energy.gov [DOE]

    A technical workshop on the 2009 National Electric Transmission Congestion Study was held on March 25-26, 2009 to receive input from subject matter experts on the historical transmission data and...

  19. Tonic Changes in EEG Power Spectra during Simulated Driving

    E-Print Network [OSTI]

    Makeig, Scott

    Tonic Changes in EEG Power Spectra during Simulated Driving Ruey-Song Huang, Tzyy-Ping Jung-departure paradigm. High-density EEG data were analyzed using independent component analysis (ICA) and Fourier analysis. Across subjects and sessions, when reaction time to lane- departure events increased several

  20. In Vehicle Technology to Correct Teen Driving Behavior

    E-Print Network [OSTI]

    Minnesota, University of

    Fatalities: Current Trends ! In last decade, have seen an increase in teen fatalities. ! Teen drivers have Inattention/Distraction 13% Driving left of center 11% Physical Impairment 9% Disregard of traffic control 7 teenagers. Source: Minnesota Motor Vehicle Crash Facts, 2004 Teen Fatality Contributing Factors: Seatbelt

  1. Nordic Electricity Congestion's Arrangement as a Model for Europe: Physical Constraints or Operators' Opportunity

    E-Print Network [OSTI]

    Glachant, Jean-Michel; Pignon, Virginie

    2004-06-16T23:59:59.000Z

    signal on a variable, complex and non transparent constraint that they may manipulate to benefit from the congestion management’s revenues or for any other personal agenda. The “Light Handed Regulation” in Nordic countries makes this strategy even more... . In the optimisation programs, these laws appear as constraints to take in account the way electric power is transmitted in the grid. References Barzel Y. (1990). Economic Analysis of Property Rights, Cambridge University Press. Baldick R. (2002). “Variation...

  2. Clean air. Safe, congestion-free highways and transit systems.

    E-Print Network [OSTI]

    Pennycook, Steve

    and weight, and increase safety and reliability of next-generation hybrid, battery-powered, and fuel cell. Through materials characterization, processing, and systems simulations, lab experts are developing next-generation batteries and manufacturing processes. ORNL is also addressing the bioenergy supply chain to enable large

  3. 51 Gerty Drive Champaign, Illinois 61820

    E-Print Network [OSTI]

    Bashir, Rashid

    51 Gerty Drive Champaign, Illinois 61820 217-333-3996 University Primary school sUmmer camP www of Illinois) with this form to: University Primary School, 51 Gerty Drive Champaign, IL 61820. Detailed

  4. Redundant Arrays of IDE Drives

    E-Print Network [OSTI]

    D. A. Sanders; L. M. Cremaldi; V. Eschenburg; C. N. Lawrence; C. Riley; D. J. Summers; D. L. Petravick

    2002-12-05T23:59:59.000Z

    The next generation of high-energy physics experiments is expected to gather prodigious amounts of data. New methods must be developed to handle this data and make analysis at universities possible. We examine some techniques that use recent developments in commodity hardware. We test redundant arrays of integrated drive electronics (IDE) disk drives for use in offline high-energy physics data analysis. IDE redundant array of inexpensive disks (RAID) prices now equal the cost per terabyte of million-dollar tape robots! The arrays can be scaled to sizes affordable to institutions without robots and used when fast random access at low cost is important. We also explore three methods of moving data between sites; internet transfers, hot pluggable IDE disks in FireWire cases, and writable digital video disks (DVD-R).

  5. Granular gases under extreme driving

    E-Print Network [OSTI]

    W. Kang; J. Machta; E. Ben-Naim

    2010-08-06T23:59:59.000Z

    We study inelastic gases in two dimensions using event-driven molecular dynamics simulations. Our focus is the nature of the stationary state attained by rare injection of large amounts of energy to balance the dissipation due to collisions. We find that under such extreme driving, with the injection rate much smaller than the collision rate, the velocity distribution has a power-law high energy tail. The numerically measured exponent characterizing this tail is in excellent agreement with predictions of kinetic theory over a wide range of system parameters. We conclude that driving by rare but powerful energy injection leads to a well-mixed gas and constitutes an alternative mechanism for agitating granular matter. In this distinct nonequilibrium steady-state, energy cascades from large to small scales. Our simulations also show that when the injection rate is comparable with the collision rate, the velocity distribution has a stretched exponential tail.

  6. Marketing & Driving Demand Collaborative - Social Media Tools...

    Energy Savers [EERE]

    drivingdemandsocialmedia010611.pdf More Documents & Publications Marketing & Driving Demand: Social Media Tools & Strategies - January 16, 2011 Social Media for Natural...

  7. An Analysis of Hard Drive Energy Consumption Anthony Hylick, Ripduman Sohan, Andrew Rice, and Brian Jones

    E-Print Network [OSTI]

    Cambridge, University of

    An Analysis of Hard Drive Energy Consumption Anthony Hylick, Ripduman Sohan, Andrew Rice, and Brian consumed by the electronics of a drive is just as important as the mechanical energy consumption; (ii consumption was a concern pri- marily for mobile computing domains. The rising cost of energy and increased

  8. EFFICIENCY OF FAST WAVE CURRENT DRIVE FOR

    E-Print Network [OSTI]

    Karney, Charles

    EFFICIENCY OF FAST WAVE CURRENT DRIVE FOR A WEAKLY RELATIVISTIC PLASMA by S.C. CHIU, C.F.F. KARNEY: http://charles.karney.info/biblio/chiu94.html #12;Chiu e t al. THE EFFICIENCY OF FAST WAVE CURRENT DRIVE FOR A WEAKLY RELATIVISTIC PLASMA THE EFFICIENCY OF FAST WAVE CURRENT DRIVE FOR A WEAKLY

  9. A Roundtable Overview Driving the Top Line

    E-Print Network [OSTI]

    A Roundtable Overview Driving the Top Line #12;© 2012 Glassmeyer/McNamee Center for Digital of the Center for Digital Strategies. Driving the Top Line A Thought Leadership Roundtable on Digital, Switzerland for a discussion on how information technology can help companies drive top-line revenue. In many

  10. US DRIVE Vehicle Systems and Analysis Technical Team Roadmap...

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

    DRIVE Technical Teams in determining performance goals and validation metrics. vsattroadmapjune2013.pdf More Documents & Publications US DRIVE Driving Research and Innovation...

  11. Real event detection and the treatment of congestive heart failure: an e fficient technique to help cardiologists to make crucial decisions

    E-Print Network [OSTI]

    P. Allegrini; R. Balocchi; S. Chillemi; P. Grigolini; P. Hamilton; R. Maestri; L. Palatella; G. Raffaelli

    2002-09-02T23:59:59.000Z

    Using a method of entropic analysis of time series we establish the correlation between heartbeat long-range memory and mortality risk in patients with congestive heart failure.

  12. Ratchet Effect and Nonlinear Transport for Particles on Random Substrates with Crossed ac Drives

    E-Print Network [OSTI]

    C. Reichhardt; C. J. Olson Reichhardt

    2005-09-13T23:59:59.000Z

    We show in simulations that overdamped interacting particles in two dimensions with a randomly disordered substrate can exhibit novel nonequilibrium transport phenomena including a transverse ratchet effect, where a combined dc drive and circular ac drive produce a drift velocity in the direction transverse to the applied dc drive. The random disorder does not break any global symmetry; however, in two dimensions, symmetry breaking occurs due to the chirality of the circular drive. In addition to inducing the transverse ratchet effect, increasing the ac amplitude also strongly affects the longitudinal velocity response and can produce what we term an overshoot effect where the longitudinal dc velocity is higher in the presence of the ac drive than it would be for a dc drive alone. We also find a dynamical reordering transition upon increasing the ac amplitude. In the absence of a dc drive, it is possible to obtain a ratchet effect when the combined ac drives produce particle orbits that break a reflection symmetry. In this case, as the ac amplitude increases, current reversals can occur. These effects may be observable for vortices in type II superconductors as well as for colloids interacting with random substrates.

  13. Fluid cooled vehicle drive module

    DOE Patents [OSTI]

    Beihoff, Bruce C.; Radosevich, Lawrence D.; Meyer, Andreas A.; Gollhardt, Neil; Kannenberg, Daniel G.

    2005-11-15T23:59:59.000Z

    An electric vehicle drive includes a support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. The support, in conjunction with other packaging features may form a shield from both external EM/RFI and from interference generated by operation of the power electronic circuits. Features may be provided to permit and enhance connection of the circuitry to external circuitry, such as improved terminal configurations. Modular units may be assembled that may be coupled to electronic circuitry via plug-in arrangements or through interface with a backplane or similar mounting and interconnecting structures.

  14. Electric Drive Status and Challenges

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the YouTube|6721 Federal Register / Vol.6:Energy Eighth Annual NationalELECTRIC DRIVE

  15. Drive5 | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluating A Potential MicrohydroDistrict ofDongjin Semichem CoDow CorningDrive5 Jump

  16. PHYSICS OF ELCTRON CYCLOTRON CURRENT DRIVE ON DIII-D

    SciTech Connect (OSTI)

    PETTY,CC; PRATER,R; LUCE,TC; ELLIS,RA; HARVEY,RW; KINSEY,JE; LAO,LL; LOHR,J; MAKOWSKI,MA

    2002-09-01T23:59:59.000Z

    OAK A271 PHYSICS OF ELCTRON CYCLOTRON CURRENT DRIVE ON DIII-D. Recent experiments on the DIII-D tokamak have focused on determining the effect of trapped particles on the electron cyclotron current drive (ECCD) efficiency. The measured ECCD efficiency increases as the deposition location is moved towards the inboard midplane or towards smaller minor radius for both co and counter injection. The measured ECCD efficiency also increases with increasing electron density and/or temperature. The experimental ECCD is compared to both the linear theory (Toray-GA) as well as a quasilinear Fokker-Planck model (CQL3D). The experimental ECCD is found to be in better agreement with the more complete Fokker-Planck calculation, especially for cases of high rf power density and/or loop voltage. The narrow width of the measured ECCD profile is consistent with only low levels of radial transport for the current carrying electrons.

  17. Driving and passengering: notes on the ordinary organisation of car travel 

    E-Print Network [OSTI]

    Laurier, Eric; Lorimer, Hayden; Brown, Barry; Jones, Owain; Juhlin, Oskar; Noble, Allyson; Perry, Mark; Pica, Daniele; Sormani, Philippe; Strebel, Ignaz; Swan, Laurel; Taylor, Alex S; Watts, Laura; Weilenmann, Alexandra

    2008-01-01T23:59:59.000Z

    We spend ever increasing periods of our lives travelling in cars, yet quite what it is we do while travelling, aside from driving the vehicle itself, is largely overlooked. Drawing on analyses of video records of a series ...

  18. Structural optimisation of permanent magnet direct drive generators for 5MW wind turbines 

    E-Print Network [OSTI]

    Zavvos, Aristeidis

    2013-11-28T23:59:59.000Z

    This thesis focuses on permanent magnet "direct drive" electrical generators for wind turbines with large power output. A variety of such generator topologies is reviewed, tested and optimised in an attempt to increase ...

  19. GCA: Global Congestion Awareness for Load Balance in Networks-on-Chip

    E-Print Network [OSTI]

    Ramakrishna, Mukund

    2012-10-19T23:59:59.000Z

    p N=2c If p N is odd, the lower bound is b p N=2c 1 Whenever the node updates one of the links in the map, our route computation module only needs to recompute a subgraph of the network. This is because the tra c ow from the source node... GCA:Global Congestion Awareness for Load Balance in Networks-on-Chip. (August 2012) Mukund Ramakrishna, B.Tech., International Institute of Information Technology, Hyderabad Co{Chairs of Advisory Committee: Dr. Paul V. Gratz Dr. Alexander...

  20. From: Jessi O"Bannon To: Congestion Study Comments Subject:

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport inEnergy0.pdf Flash2010-60.pdf2Jessi O"Bannon To: Congestion Study

  1. From: Kamra To: Congestion Study Comments Subject: NIETC"s Date:

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport inEnergy0.pdf Flash2010-60.pdf2Jessi O"Bannon To: CongestionJustin

  2. From: Kathy Mikels To: Congestion Study Comments Subject: STOP CLEAN LINE, BLOCK GRAIN BELT

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport inEnergy0.pdf Flash2010-60.pdf2Jessi O"Bannon To: CongestionJustinKathy

  3. Electric vehicle drive train with contactor protection

    DOE Patents [OSTI]

    Konrad, Charles E. (Roanoke, VA); Benson, Ralph A. (Roanoke, VA)

    1994-01-01T23:59:59.000Z

    A drive train for an electric vehicle includes a traction battery, a power drive circuit, a main contactor for connecting and disconnecting the traction battery and the power drive circuit, a voltage detector across contacts of the main contactor, and a controller for controlling the main contactor to prevent movement of its contacts to the closed position when the voltage across the contacts exceeds a predetermined threshold, to thereby protect the contacts of the contactor. The power drive circuit includes an electric traction motor and a DC-to-AC inverter with a capacitive input filter. The controller also inhibits the power drive circuit from driving the motor and thereby discharging the input capacitor if the contacts are inadvertently opened during motoring. A precharging contactor is controlled to charge the input filter capacitor prior to closing the main contactor to further protect the contacts of the main contactor.

  4. Electric vehicle drive train with contactor protection

    DOE Patents [OSTI]

    Konrad, C.E.; Benson, R.A.

    1994-11-29T23:59:59.000Z

    A drive train for an electric vehicle includes a traction battery, a power drive circuit, a main contactor for connecting and disconnecting the traction battery and the power drive circuit, a voltage detector across contacts of the main contactor, and a controller for controlling the main contactor to prevent movement of its contacts to the closed position when the voltage across the contacts exceeds a predetermined threshold, to thereby protect the contacts of the contactor. The power drive circuit includes an electric traction motor and a DC-to-AC inverter with a capacitive input filter. The controller also inhibits the power drive circuit from driving the motor and thereby discharging the input capacitor if the contacts are inadvertently opened during motoring. A precharging contactor is controlled to charge the input filter capacitor prior to closing the main contactor to further protect the contacts of the main contactor. 3 figures.

  5. Lectures on current-drive theory

    SciTech Connect (OSTI)

    Fisch, N.J.

    1986-01-01T23:59:59.000Z

    Separate abstracts were prepared for 2 papers in this report. The papers present an introduction and an overview to the theory of current drive. (JDB)

  6. Pile driving and bioacoustic impacts on fish

    E-Print Network [OSTI]

    McKee, Deborah C.

    2005-01-01T23:59:59.000Z

    was the nexus to use steel piles as the preferred structuralbegan driving the steel piles, we realized that underwaterdeath to fish near the pile. Pressure waves are generated

  7. US DRIVE Highlights of Technical Accomplishments 2013

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

    for longer-lasting and more cost-effective electric drive vehicle batteries. National Renewable Energy Laboratory Advanced energy storage devices, such as lithium- based...

  8. Fuel Economy: What Drives Consumer Choice?

    E-Print Network [OSTI]

    Turrentine, Tom; Kurani, Kenneth; Heffner, Rusty

    2007-01-01T23:59:59.000Z

    Car Buyers and Fuel Economy? ” Energy Policy, vol. 35, 2007.Fuel Economy: What Drives Consumer Choice? BY TOMyou think about fuel economy? ” Rather, we listened closely

  9. Fuel Economy: What Drives Consumer Choice?

    E-Print Network [OSTI]

    Turrentine, Tom; Kurani, Kenneth S; Heffner, Reid R.

    2008-01-01T23:59:59.000Z

    Car Buyers and Fuel Economy? ” Energy Policy, vol. 35, 2007.Fuel Economy: What Drives Consumer Choice? BY TOMyou think about fuel economy? ” Rather, we listened closely

  10. Electric-Drive Vehicle Basics (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2011-04-01T23:59:59.000Z

    Describes the basics of electric-drive vehicles, including hybrid electric vehicles, plug-in hybrid electric vehicles, all-electric vehicles, and the various charging options.

  11. Advanced Electric Drive Vehicles ? A Comprehensive Education...

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

    Meeting arravt034tiferdowsi2012o.pdf More Documents & Publications Advanced Electric Drive Vehicles A Comprehensive Education, Training, and Outreach Program...

  12. Advanced Electric Drive Vehicles ? A Comprehensive Education...

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

    Peer Evaluation arravt034tiferdowsi2011p.pdf More Documents & Publications Advanced Electric Drive Vehicles A Comprehensive Education, Training, and Outreach Program...

  13. Advanced Electric Drive Vehicles ? A Comprehensive Education...

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

    -- Washington D.C. tiarravt034ferdowsi2010o.pdf More Documents & Publications Advanced Electric Drive Vehicles A Comprehensive Education, Training, and Outreach Program...

  14. Dynamic coupling drives conformational evolution of branched...

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

    Materials Characterization Dynamic coupling drives conformational evolution of branched polymers in solutions March 06, 2015 Inter-particle collision time (filled circles) and...

  15. Grand Challenge Portfolio: Driving Innovations in Industrial...

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

    9 Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January 2011 - pg 9 grandchallengesportfoliopg9.pdf More Documents & Publications Grand...

  16. Grand Challenge Portfolio: Driving Innovations in Industrial...

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

    6 Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January 2011 - pg 6 grandchallengesportfoliopg6.pdf More Documents & Publications Grand...

  17. Grand Challenge Portfolio: Driving Innovations in Industrial...

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

    8 Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January 2011 - pg 8 grandchallengesportfoliopg8.pdf More Documents & Publications Grand...

  18. Highway vehicle electric drive in the United States : 2009 status and issues.

    SciTech Connect (OSTI)

    Santini, D. J.; Energy Systems

    2011-02-16T23:59:59.000Z

    The status of electric drive technology in the United States as of early 2010 is documented. Rapidly evolving electric drive technologies discussed include hybrid electric vehicles, multiple types of plug-in hybrid electric vehicles, and battery electric vehicles. Recent trends for hybrids are quantified. Various plug-in vehicles entering the market in the near term are examined. The technical and economic requirements for electric drive to more broadly succeed in a wider range of highway vehicle applications are described, and implications for the most promising new markets are provided. Federal and selected state government policy measures promoting and preparing for electric drive are discussed. Taking these into account, judgment on areas where increased Clean Cities funds might be most productively focused over the next five years are provided. In closing, the request by Clean Cities for opinion on the broad range of research needs providing near-term support to electric drive is fulfilled.

  19. Fast wave current drive in DIII-D

    SciTech Connect (OSTI)

    Petty, C.C.; Callis, R.W.; Chiu, S.C.; deGrassie, J.S.; Forest, C.B.; Freeman, R.L.; Gohil, P.; Harvey, R.W.; Ikezi, H.; Lin-Liu, Y.-R. [and others

    1995-02-01T23:59:59.000Z

    The non-inductive current drive from fast Alfven waves launched by a directional four-element antenna was measured in the DIII-D tokamak. The fast wave frequency (60 MHz) was eight times the deuterium cyclotron frequency at the plasma center. An array of rf pickup loops at several locations around the torus was used to verify the directivity of the four-element antenna. Complete non-inductive current drive was achieved using a combination of fast wave current drive (FWCD) and electron cyclotron current drive (ECCD) in discharges for which the total plasma current was inductively ramped down from 400 to 170 kA. For discharges with steady plasma current, up to 110 kA of FWCD was inferred from an analysis of the loop voltage, with a maximum non-inductive current (FWCD, ECCD, and bootstrap) of 195 out of 310 kA. The FWCD efficiency increased linearly with central electron temperature. For low current discharges, the FWCD efficiency was degraded due to incomplete fast wave damping. The experimental FWCD was found to agree with predictions from the CURRAY ray-tracing code only when a parasitic loss of 4% per pass was included in the modeling along with multiple pass damping.

  20. DRIVE Analysis Tool Generates Custom Vehicle Drive Cycles Based on Real-World Data (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2013-04-01T23:59:59.000Z

    This fact sheet from the National Renewable Energy Laboratory describes the Drive-Cycle Rapid Investigation, Visualization, and Evaluation (DRIVE) analysis tool, which uses GPS and controller area network data to characterize vehicle operation and produce custom vehicle drive cycles, analyzing thousands of hours of data in a matter of minutes.

  1. The Accident Externality from Driving

    E-Print Network [OSTI]

    Edlin, Aaron S.; Karaca-Mandic, Pinar

    2003-01-01T23:59:59.000Z

    to which this externality results from increases in accidentrates, accident severity or both remains unclear. Itpertains to underinsured accident costs like fatality risk.

  2. Redundant arrays of IDE drives

    SciTech Connect (OSTI)

    D.A. Sanders et al.

    2002-01-02T23:59:59.000Z

    The authors report tests of redundant arrays of IDE disk drives for use in offline high energy physics data analysis. Parts costs of total systems using commodity EIDE disks are now at the $4000 per Terabyte level. Disk storage prices have now decreased to the point where they equal the cost per Terabyte of Storage Technology tape silos. The disks, however, offer far better granularity; even small institutions can afford to deploy systems. The tests include reports on software RAID-5 systems running under Linux 2.4 using Promise Ultra 100{trademark} disk controllers. RAID-5 protects data in case of a single disk failure by providing parity bits. Tape backup is not required. Journaling file systems are used to allow rapid recovery from crashes. The data analysis strategy is to encapsulate data and CPU processing power. Analysis for a particular part of a data set takes place on the PC where the data resides. The network is only used to put results together. They explore three methods of moving data between sites; internet transfers, not pluggable IDE disks in FireWire cases, and DVD-R disks.

  3. Control rod drive hydraulic system

    DOE Patents [OSTI]

    Ose, Richard A. (San Jose, CA)

    1992-01-01T23:59:59.000Z

    A hydraulic system for a control rod drive (CRD) includes a variable output-pressure CR pump operable in a charging mode for providing pressurized fluid at a charging pressure, and in a normal mode for providing the pressurized fluid at a purge pressure, less than the charging pressure. Charging and purge lines are disposed in parallel flow between the CRD pump and the CRD. A hydraulic control unit is disposed in flow communication in the charging line and includes a scram accumulator. An isolation valve is provided in the charging line between the CRD pump and the scram accumulator. A controller is operatively connected to the CRD pump and the isolation valve and is effective for opening the isolation valve and operating the CRD pump in a charging mode for charging the scram accumulator, and closing the isolation valve and operating the CRD pump in a normal mode for providing to the CRD through the purge line the pressurized fluid at a purge pressure lower than the charging pressure.

  4. 546 IEEE COMMUNICATIONS LETTERS, VOL. 13, NO. 7, JULY 2009 Is It Congestion or a DDoS Attack?

    E-Print Network [OSTI]

    Ansari, Nirwan

    546 IEEE COMMUNICATIONS LETTERS, VOL. 13, NO. 7, JULY 2009 Is It Congestion or a DDoS Attack? Amey Shevtekar and Nirwan Ansari, Fellow, IEEE Abstract--We propose a new stealthy DDoS attack model referred to as the "quiet" attack. The attack traffic consists of TCP traffic only. Widely used botnets in today's various

  5. CIRED Workshop "Grid operation and congestion management" -Rome, 11-12 June 2014 Paper No 0371 Page 1 / 4

    E-Print Network [OSTI]

    Boyer, Edmond

    project. The project aims at developing a smart solar neighbourhood in an urban area near the city of NiceCIRED Workshop "Grid operation and congestion management" - Rome, 11-12 June 2014 Paper 0371 Paper IN THE NICE GRID DEMONSTRATOR Andrea MICHIORRI Georges KARINIOTAKIS Fiona FOUCAULT MINES ParisTech ­ France

  6. Risks of using AP locations discovered through war driving

    E-Print Network [OSTI]

    Kotz, David

    Risks of using AP locations discovered through war driving Minkyong Kim, Jeffrey J. Fielding the actual locations are often unavailable, they use estimated locations from war driving estimated through war driving. War driving is the process of collecting Wi-Fi beacons by driving or walking

  7. Chapter 18: Variable Frequency Drive Evaluation Protocol

    SciTech Connect (OSTI)

    Romberger, J.

    2014-11-01T23:59:59.000Z

    An adjustable-speed drive (ASD) includes all devices that vary the speed of a rotating load, including those that vary the motor speed and linkage devices that allow constant motor speed while varying the load speed. The Variable Frequency Drive Evaluation Protocol presented here addresses evaluation issues for variable-frequency drives (VFDs) installed on commercial and industrial motor-driven centrifugal fans and pumps for which torque varies with speed. Constant torque load applications, such as those for positive displacement pumps, are not covered by this protocol. Other ASD devices, such as magnetic drive, eddy current drives, variable belt sheave drives, or direct current motor variable voltage drives, are also not addressed. The VFD is by far the most common type of ASD hardware. With VFD speed control on a centrifugal fan or pump motor, energy use follows the affinity laws, which state that the motor electricity demand is a cubic relationship to speed under ideal conditions. Therefore, if the motor runs at 75% speed, the motor demand will ideally be reduced to 42% of full load power; however, with other losses it is about 49% of full load power.

  8. A high-fidelity harmonic drive model.

    SciTech Connect (OSTI)

    Preissner, C.; Royston, T. J.; Shu, D. (APS Engineering Support Division); ( MCS); (Univ. of Illinois)

    2012-01-01T23:59:59.000Z

    In this paper, a new model of the harmonic drive transmission is presented. The purpose of this work is to better understand the transmission hysteresis behavior while constructing a new type of comprehensive harmonic drive model. The four dominant aspects of harmonic drive behavior - nonlinear viscous friction, nonlinear stiffness, hysteresis, and kinematic error - are all included in the model. The harmonic drive is taken to be a black box, and a dynamometer is used to observe the input/output relations of the transmission. This phenomenological approach does not require any specific knowledge of the internal kinematics. In a novel application, the Maxwell resistive-capacitor hysteresis model is applied to the harmonic drive. In this model, sets of linear stiffness elements in series with Coulomb friction elements are arranged in parallel to capture the hysteresis behavior of the transmission. The causal hysteresis model is combined with nonlinear viscous friction and spectral kinematic error models to accurately represent the harmonic drive behavior. Empirical measurements are presented to quantify all four aspects of the transmission behavior. These measurements motivate the formulation of the complete model. Simulation results are then compared to additional measurements of the harmonic drive performance.

  9. Enhanced Recovery Utilizing Variable Frequency Drives and a Distributed Power System

    SciTech Connect (OSTI)

    Randy Peden; Sanjiv Shah

    2005-07-26T23:59:59.000Z

    This report describes complete results of the project entitled ''Enhanced Recovery Utilizing Variable Frequency Drives and a Distributed Power System''. This demonstration project was initiated in July 2003 and completed in March 2005. The objective of the project was to develop an integrated power production/variable frequency drive system that could easily be deployed in the oil field that would increase production and decrease operating costs. This report describes all the activities occurred and documents results of the demonstration.

  10. Wind turbine ring/shroud drive system

    DOE Patents [OSTI]

    Blakemore, Ralph W.

    2005-10-04T23:59:59.000Z

    A wind turbine capable of driving multiple electric generators having a ring or shroud structure for reducing blade root bending moments, hub loads, blade fastener loads and pitch bearing loads. The shroud may further incorporate a ring gear for driving an electric generator. In one embodiment, the electric generator may be cantilevered from the nacelle such that the gear on the generator drive shaft is contacted by the ring gear of the shroud. The shroud also provides protection for the gearing and aids in preventing gear lubricant contamination.

  11. Test Drive: Honda FCX Clarity | Department of Energy

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

    Drive: Honda FCX Clarity Test Drive: Honda FCX Clarity May 14, 2010 - 10:52am Addthis A member of the Energy Empowers team takes the Honda FCX Clarity for a drive outside the U.S....

  12. Lower-hybrid current drive with opposing ohmic drive on PLT

    SciTech Connect (OSTI)

    Stevens, J.; von Goeler, S.; Bernabei, S.; Chu, T.K.; Hooke, W.; Jobes, F.; Meservey, E.; Motley, R.

    1983-06-01T23:59:59.000Z

    Two distinct conditions where the rf phase velocity is directed opposite to the ohmically induced electron drift have been studied experimentally: (1) rf current ramp-up (f/sub p/ > 0), where an induced electric field opposes the current increase; (2) rf current ramp-down, where waves are launched opposite the electron drift direction for a decaying plasma current. The time behavior of the electron tail is inferred from hard x-ray (30 to 750 keV) emission as a function of angle to B. In cases (1) and (2) we find that the emission amplitude in the reverse (opposite the LH phase velocity) direction increases throughout the rf pulse, while it is constant in the forward direction. This increase indicates that some high energy electrons are accelerated or are even running away in the direction opposite to the main rf produced tail. It also indicates for case (1) that the electric field in the plasma center has been reversed by the rf current drive.

  13. Ag Education Student 1234 Education Drive

    E-Print Network [OSTI]

    Ag Education Student 1234 Education Drive Fort Collins, CO 80523 educationstudent@gmail.com~970-222-1234 Education Bachelors of Science in Agriculture Education (Teacher Licensure requirements met) Anticipated May

  14. January Blood Drive Announcement | Jefferson Lab

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

    Red Cross Blood Drive will take place Tuesday, January 27th from 10 a.m.-4 p.m. in CEBAF Center, Room F113. New and repeat donors are encouraged to attend. To schedule an...

  15. Universal power transistor base drive control unit

    DOE Patents [OSTI]

    Gale, A.R.; Gritter, D.J.

    1988-06-07T23:59:59.000Z

    A saturation condition regulator system for a power transistor is disclosed which achieves the regulation objectives of a Baker clamp but without dumping excess base drive current into the transistor output circuit. The base drive current of the transistor is sensed and used through an active feedback circuit to produce an error signal which modulates the base drive current through a linearly operating FET. The collector base voltage of the power transistor is independently monitored to develop a second error signal which is also used to regulate base drive current. The current-sensitive circuit operates as a limiter. In addition, a fail-safe timing circuit is disclosed which automatically resets to a turn OFF condition in the event the transistor does not turn ON within a predetermined time after the input signal transition. 2 figs.

  16. Image fusion for a nighttime driving display

    E-Print Network [OSTI]

    Herrington, William Frederick

    2005-01-01T23:59:59.000Z

    An investigation into image fusion for a nighttime driving display application was performed. Most of the image fusion techniques being investigated in this application were developed for other purposes. When comparing the ...

  17. Universal power transistor base drive control unit

    SciTech Connect (OSTI)

    Gale, Allan R. (Allen Park, MI); Gritter, David J. (Racine, WI)

    1988-01-01T23:59:59.000Z

    A saturation condition regulator system for a power transistor which achieves the regulation objectives of a Baker clamp but without dumping excess base drive current into the transistor output circuit. The base drive current of the transistor is sensed and used through an active feedback circuit to produce an error signal which modulates the base drive current through a linearly operating FET. The collector base voltage of the power transistor is independently monitored to develop a second error signal which is also used to regulate base drive current. The current-sensitive circuit operates as a limiter. In addition, a fail-safe timing circuit is disclosed which automatically resets to a turn OFF condition in the event the transistor does not turn ON within a predetermined time after the input signal transition.

  18. Fuel Economy: What Drives Consumer Choice?

    E-Print Network [OSTI]

    Turrentine, Tom; Kurani, Kenneth; Heffner, Rusty

    2007-01-01T23:59:59.000Z

    S. Kurani, “Car Buyers and Fuel Economy? ” Energy Policy,Fuel Economy: What Drives Consumer Choice? BY TOMa car, do they think about fuel costs over time, are they

  19. Consider Steam Turbine Drives for Rotating Equipment

    SciTech Connect (OSTI)

    Not Available

    2006-01-01T23:59:59.000Z

    This revised ITP tip sheet on steam turbine drives for rotating equipment provides how-to advice for improving the system using low-cost, proven practices and technologies.

  20. Computer-Aided Engineering for Electric Drive Vehicle Batteries...

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

    Computer-Aided Engineering for Electric Drive Vehicle Batteries (CAEBAT) Computer-Aided Engineering for Electric Drive Vehicle Batteries (CAEBAT) 2011 DOE Hydrogen and Fuel Cells...

  1. US DRIVE Electrochemical Energy Storage Technical Team Roadmap...

    Office of Environmental Management (EM)

    Electrochemical Energy Storage Technical Team Roadmap US DRIVE Electrochemical Energy Storage Technical Team Roadmap This U.S. DRIVE electrochemical energy storage roadmap...

  2. Vehicle Technologies Office Merit Review 2015: Electric Drive...

    Energy Savers [EERE]

    Vehicle Technologies Office Merit Review 2015: Electric Drive Inverter R&D Vehicle Technologies Office Merit Review 2015: Electric Drive Inverter R&D Presentation given by Oak...

  3. High-Voltage Solid Polymer Batteries for Electric Drive Vehicles...

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

    High-Voltage Solid Polymer Batteries for Electric Drive Vehicles High-Voltage Solid Polymer Batteries for Electric Drive Vehicles 2012 DOE Hydrogen and Fuel Cells Program and...

  4. Electric Drive Component Manufacturing: Magna E-Car Systems of...

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

    More Documents & Publications Electric Drive Component Manufacturing: Magna E-Car Systems of America, Inc. Electric Drive Component Manufacturing: Magna E-Car Systems...

  5. Energy Upgrade California Drives Demand From Behind the Wheel...

    Energy Savers [EERE]

    Upgrade California Drives Demand From Behind the Wheel Energy Upgrade California Drives Demand From Behind the Wheel Photo of a trailer with the Energy Upgrade California logo and...

  6. Energy Department Invests to Drive Down Costs of Carbon Capture...

    Energy Savers [EERE]

    Invests to Drive Down Costs of Carbon Capture, Support Reductions in Greenhouse Gas Pollution Energy Department Invests to Drive Down Costs of Carbon Capture, Support Reductions...

  7. Medium- and Heavy-Duty Electric Drive Vehicle Simulation and...

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

    Medium- and Heavy-Duty Electric Drive Vehicle Simulation and Analysis Medium- and Heavy-Duty Electric Drive Vehicle Simulation and Analysis 2011 DOE Hydrogen and Fuel Cells...

  8. Center for Electric Drive Transportation at the University of...

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

    Electric Drive Transportation at the University of Michigan - Dearborn Center for Electric Drive Transportation at the University of Michigan - Dearborn 2012 DOE Hydrogen and Fuel...

  9. High-Temperature, Air-Cooled Traction Drive Inverter Packaging...

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

    High-Temperature, Air-Cooled Traction Drive Inverter Packaging High-Temperature, Air-Cooled Traction Drive Inverter Packaging 2010 DOE Vehicle Technologies and Hydrogen Programs...

  10. Improving Motor and Drive System Performance - A Sourcebook for...

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

    motors and drives, as well as resources for additional information, tools, software, videos, and training opportunities. Improving Motor and Drive System Performance - A...

  11. EV Everywhere EV Everywhere Grand Challenge - Electric Drive...

    Energy Savers [EERE]

    EV Everywhere Grand Challenge - Electric Drive (Power Electronics and Electric Machines) Workshop Agenda EV Everywhere EV Everywhere Grand Challenge - Electric Drive (Power...

  12. EV Everywhere Grand Challenge - Electric Drive (Power Electronics...

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

    Drive Workshop EV Everywhere EV Everywhere Grand Challenge - Electric Drive (Power Electronics and Electric Machines) Workshop Agenda EV Everywhere Grand Challenge - Battery...

  13. Frequency modulation drive for a piezoelectric motor

    DOE Patents [OSTI]

    Mittas, Anthony (Albuquerque, NM)

    2001-01-01T23:59:59.000Z

    A piezoelectric motor has peak performance at a specific frequency f.sub.1 that may vary over a range of frequencies. A drive system is disclosed for operating such a motor at peak performance without feedback. The drive system consists of the motor and an ac source connected to power the motor, the ac source repeatedly generating a frequency over a range from f.sub.1 -.DELTA.x to f.sub.1 +.DELTA.y.

  14. Dielectric Wakefield Accelerator to drive the future FEL Light Source.

    SciTech Connect (OSTI)

    Jing, C.; Power, J.; Zholents, A. (Accelerator Systems Division (APS)); ( HEP); (LLC)

    2011-04-20T23:59:59.000Z

    X-ray free-electron lasers (FELs) are expensive instruments and a large part of the cost of the entire facility is driven by the accelerator. Using a high-energy gain dielectric wake-field accelerator (DWA) instead of the conventional accelerator may provide a significant cost saving and reduction of the facility size. In this article, we investigate using a collinear dielectric wakefield accelerator to provide a high repetition rate, high current, high energy beam to drive a future FEL x-ray light source. As an initial case study, a {approx}100 MV/m loaded gradient, 850 GHz quartz dielectric based 2-stage, wakefield accelerator is proposed to generate a main electron beam of 8 GeV, 50 pC/bunch, {approx}1.2 kA of peak current, 10 x 10 kHz (10 beamlines) in just 100 meters with the fill factor and beam loading considered. This scheme provides 10 parallel main beams with one 100 kHz drive beam. A drive-to-main beam efficiency {approx}38.5% can be achieved with an advanced transformer ratio enhancement technique. rf power dissipation in the structure is only 5 W/cm{sup 2} in the high repetition rate, high gradient operation mode, which is in the range of advanced water cooling capability. Details of study presented in the article include the overall layout, the transform ratio enhancement scheme used to increase the drive to main beam efficiency, main wakefield linac design, cooling of the structure, etc.

  15. MHD simulation of RF current drive in MST

    SciTech Connect (OSTI)

    Hendries, E. R.; Anderson, J. K.; Forest, C. B.; Reusch, J. A.; Seltzman, A. H.; Sovinec, C. R. [University of Wisconsin, Madison WI (United States); Diem, S. [Oak Ridge National Laboratory, Oak Ridge TN (United States); Harvey, R. W. [CompX, Del Mar, CA (United States)

    2014-02-12T23:59:59.000Z

    Auxiliary heating and current drive using RF waves such as the electron Bernstein wave (EBW) promises to advance the performance of the reversed field pinch (RFP). In previous computational work [1], a hypothetical edge-localized current drive is shown to suppress the tearing activity which governs the macroscopic transport properties of the RFP. The ideal conditions for tearing stabilization include a reduced toroidal induction, and precise width and radial position of the Gaussian-shaped external current drive. In support of the EBW experiment on the Madison Symmetric Torus, an integrated modeling scheme now incorporates ray tracing and Fokker-Plank predictions of auxiliary current into single fluid MHD. Simulations at low Lundquist number (S ? 10{sup 4}) generally agree with the previous work; significantly more burdensome simulations at MST-like Lundquist number (S ? 3×10{sup 6}) show unexpected results. The effect on nonlinearly saturated current profile by a particular RF-driven external force decreases in magnitude and widens considerably as the Lundquist number increases toward experimental values. Simulations reproduce the periodic current profile relaxation events observed in experiment (sawteeth) in the absence of current profile control. Reduction of the tearing mode amplitudes is still observable; however, reduction is limited to periods between the large bursts of magnetic activity at each sawtooth. The sawtoothing pattern persists with up to 10 MW of externally applied RF power. Periods with prolonged low tearing amplitude are predicted with a combination of external current drive and a reduced toroidal loop voltage, consistent with previous conclusions. Finally, the resistivity profile is observed to have a strong effect on the optimal externally driven current profile for mode stabilization.

  16. Impact of Input Voltage Sag and Unbalance on DC Link Inductor and Capacitor Stress in Adjustable Speed Drives

    E-Print Network [OSTI]

    Lipo, Thomas

    , outages, voltage surges and sags. Power quality problems induced in adjustable-speed drives (ASDs) have (120 Hz for 60 Hz system) that increases the electrical stresses on the dc bus choke inductor (if used

  17. Central interference in driving - Is there any stopping the psychological refractory period?

    E-Print Network [OSTI]

    Levy, J; Pashler, H; Boer, E

    2006-01-01T23:59:59.000Z

    while driving. Accident Analysis & Prevention, 31, 617–623.on driving performance. Accident Analysis & Prevention, 23,

  18. SYNTHETIC LUBRICANTS, INC 1411 Callaghan Drive

    E-Print Network [OSTI]

    Rollins, Andrew M.

    1 SYNTHETIC LUBRICANTS, INC 1411 Callaghan Drive Greenville, MI 48838 MATERIAL SAFETY DATA SHEET irritating and potentially toxic fumes containing oxides of nitrogen if exposed to extreme heat in air: (Conditions to Avoid) Stable under normal use conditions and in final use concentration. Incompatibility

  19. SYNTHETIC LUBRICANTS, INC 1411 Callaghan Drive

    E-Print Network [OSTI]

    Rollins, Andrew M.

    1 SYNTHETIC LUBRICANTS, INC 1411 Callaghan Drive Greenville, MI 48838 MATERIAL SAFETY DATA SHEET. It will produce irritating and potentially toxic fumes containing oxides of nitrogen if exposed to extreme heat: (Conditions to Avoid) Stable under normal use conditions and in final use concentration. Incompatibility

  20. What's Driving Oil Prices? James L. Smith

    E-Print Network [OSTI]

    O'Donnell, Tom

    to demand and supply reactions. "The Coal Age didn't end because producers ran out of coal !!" OIL PRICE VS1 What's Driving Oil Prices? James L. Smith Cary M. Maguire Chair in Oil & Gas Management Critical Issues in Energy Federal Reserve Bank of Dallas November 2, 2006 The Price of OPEC Oil ($/bbl) $0 $20 $40

  1. Operating Instructions CASSEHE PUMP DRIVE UNIT

    E-Print Network [OSTI]

    Kleinfeld, David

    4 · Operating Instructions CASSEHE® PUMP DRIVE UNIT Catalog No. 72-510-000 72-510-220 PUMPING The squeezing action of rollers on tubing causes the peristaltic pumping action. The flow is proportionate to the speied of the rollers and the inside diameter of the tubing, both of which can be varied. Pumping

  2. Driving EHOs in NSTX Rob Goldston

    E-Print Network [OSTI]

    Princeton Plasma Physics Laboratory

    Driving EHOs in NSTX Rob Goldston September 8, 2010 #12;Houston, We have a Problem · Lithium rises. · This is not good, but it is not because the lithium is not pumping deuterium. · In the absence in most respects to RWM interactions - but in rotating frame. · Being examined by J-K Park and A. Boozer

  3. Oscillation control system for electric motor drive

    DOE Patents [OSTI]

    Slicker, J.M.; Sereshteh, A.

    1988-08-30T23:59:59.000Z

    A feedback system for controlling mechanical oscillations in the torsionally complaint drive train of an electric or other vehicle. Motor speed is converted in a processor to estimate state signals in which a plant model which are used to electronically modify the torque commands applied to the motor. 5 figs.

  4. What drives option prices? Frdric Abergel1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    . The study reveals that while the modeling of stochastic volatility gives more robust models, the market does 2 Theoretical framework 4 3 Intraday joint dynamics of option and underlying prices 5 3.1 EppsWhat drives option prices? Frédéric Abergel1 and Riadh Zaatour2 Chair of Quantitative Finance Ecole

  5. Driving Supplement to Application for Student Employment

    E-Print Network [OSTI]

    Amin, S. Massoud

    Driving Supplement to Application for Student Employment For positions that require employees you for employment (MN STAT. S13.04 [Subd. 21]): Private Information Intended Use Legal Requirement. ______________________________________________________________________ ________________ Signature Date The University of Minnesota is an equal opportunity educator & employer. © 2001

  6. Oscillation control system for electric motor drive

    DOE Patents [OSTI]

    Slicker, James M. (Union Lake, MI); Sereshteh, Ahmad (Union Lake, MI)

    1988-01-01T23:59:59.000Z

    A feedback system for controlling mechanical oscillations in the torsionally complaint drive train of an electric or other vehicle. Motor speed is converted in a processor to estimate state signals in which a plant model which are used to electronically modify thetorque commands applied to the motor.

  7. Risk Management 1851 N. Research Drive

    E-Print Network [OSTI]

    Moore, Paul A.

    -372-3135 Bowling Green State University Motor Vehicle Record Statement University policy requires that all driversRisk Management 1851 N. Research Drive Bowling Green, OH 43403 419-372-2127 Fax 419 acknowledge that the university endorses all applicable state motor vehicle regulations relating to driver

  8. Program assists steam drive design project

    SciTech Connect (OSTI)

    Mendez, A.A.

    1984-08-27T23:59:59.000Z

    A new program for the HP-41CV programmable calculator will compute all parameters required for a steam drive project design. The Marx and Langenheim model assumptions are used to solve a more advanced version of the Myhill and Stegemeier model. Also, the Mandl and Volek model assuptions are used to compute the size of the steam zone.

  9. Drive piston assembly for a valve actuator assembly

    DOE Patents [OSTI]

    Sun, Zongxuan (Troy, MI)

    2010-02-23T23:59:59.000Z

    A drive piston assembly is provided that is operable to selectively open a poppet valve. The drive piston assembly includes a cartridge defining a generally stepped bore. A drive piston is movable within the generally stepped bore and a boost sleeve is coaxially disposed with respect to the drive piston. A main fluid chamber is at least partially defined by the generally stepped bore, drive piston, and boost sleeve. First and second feedback chambers are at least partially defined by the drive piston and each are disposed at opposite ends of the drive piston. At least one of the drive piston and the boost sleeve is sufficiently configured to move within the generally stepped bore in response to fluid pressure within the main fluid chamber to selectively open the poppet valve. A valve actuator assembly and engine are also provided incorporating the disclosed drive piston assembly.

  10. Polymers with increased order

    DOE Patents [OSTI]

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

    1998-08-25T23:59:59.000Z

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

  11. Location Based Challenges on Mobile Devices for a Fuel Efficient Driving Behavior

    E-Print Network [OSTI]

    while driving. 1 Introduction Global warming and rising oil prices have led to a state of increased task in real-time. On the other hand interfaces for giving feedback about the driver's historic fuel concept of location based challenges allows the combination of the idea of historic competitive systems

  12. Workplace Plug-in Electric Vehicle Ride and Drive

    Broader source: Energy.gov [DOE]

    Workplace plug-in electric vehicle (PEV) Ride and Drive events are one of the most effective ways to drive PEV adoption. By providing staff the opportunity to experience PEVs first hand, they can...

  13. Secrets of the Motor That Drives Archaea Revealed

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

    Secrets of the Motor That Drives Archaea Revealed Secrets of the Motor That Drives Archaea Revealed Print Thursday, 14 February 2013 00:00 An international team led by John Tainer...

  14. Optimization of Driving Styles for Fuel Economy Improvement

    SciTech Connect (OSTI)

    Malikopoulos, Andreas [ORNL] [ORNL; Aguilar, Juan P. [Georgia Institute of Technology] [Georgia Institute of Technology

    2012-01-01T23:59:59.000Z

    Modern vehicles have sophisticated electronic control units, particularly to control engine operation with respect to a balance between fuel economy, emissions, and power. These control units are designed for specific driving conditions and testing. However, each individual driving style is different and rarely meets those driving conditions. In the research reported here we investigate those driving style factors that have a major impact on fuel economy. An optimization framework is proposed with the aim of optimizing driving styles with respect to these driving factors. A set of polynomial metamodels are constructed to reflect the responses produced by changes of the driving factors. Then we compare the optimized driving styles to the original ones and evaluate the efficiency and effectiveness of the optimization formulation.

  15. Indianapolis Offers a Lesson on Driving Demand | Department of...

    Energy Savers [EERE]

    Indianapolis Offers a Lesson on Driving Demand Indianapolis Offers a Lesson on Driving Demand The flier for EcoHouse, with the headline 'Save energy, save money, improve your home'...

  16. Columbia Power Technologies, Inc. Deploys its Direct Drive Wave...

    Office of Environmental Management (EM)

    Columbia Power Technologies, Inc. Deploys its Direct Drive Wave Energy Buoy Columbia Power Technologies, Inc. Deploys its Direct Drive Wave Energy Buoy April 9, 2013 - 12:00am...

  17. Medium- and Heavy-Duty Electric Drive Vehicle Simulation and...

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

    Medium- and Heavy-Duty Electric Drive Vehicle Simulation and Analysis Medium- and Heavy-Duty Electric Drive Vehicle Simulation and Analysis 2012 DOE Hydrogen and Fuel Cells Program...

  18. An Optimization Model for Eco-Driving at Signalized Intersection

    E-Print Network [OSTI]

    Chen, Zhi

    2013-07-15T23:59:59.000Z

    This research develops an optimization model for eco-driving at signalized intersection. In urban areas, signalized intersections are the “hot spots” of air emissions and have significant negative environmental and health impacts. Eco-driving is a...

  19. Utilizing the Traction Drive Power Electronics System to Provide...

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

    Traction Drive Power Electronics System to Provide Plug-in Capability for PHEVs Utilizing the Traction Drive Power Electronics System to Provide Plug-in Capability for PHEVs 2009...

  20. Integrated Inverter For Driving Multiple Electric Machines

    SciTech Connect (OSTI)

    Su, Gui-Jia [Knoxville, TN; Hsu, John S [Oak Ridge, TN

    2006-04-04T23:59:59.000Z

    An electric machine drive (50) has a plurality of inverters (50a, 50b) for controlling respective electric machines (57, 62), which may include a three-phase main traction machine (57) and two-phase accessory machines (62) in a hybrid or electric vehicle. The drive (50) has a common control section (53, 54) for controlling the plurality of inverters (50a, 50b) with only one microelectronic processor (54) for controlling the plurality of inverters (50a, 50b), only one gate driver circuit (53) for controlling conduction of semiconductor switches (S1-S10) in the plurality of inverters (50a, 50b), and also includes a common dc bus (70), a common dc bus filtering capacitor (C1) and a common dc bus voltage sensor (67). The electric machines (57, 62) may be synchronous machines, induction machines, or PM machines and may be operated in a motoring mode or a generating mode.

  1. Upconversion as a Viable Route to Increased Efficiency Solar Energy

    E-Print Network [OSTI]

    Firestone, Jeremy

    Upconversion as a Viable Route to Increased Efficiency Solar Energy Conversion Joshua Zide, Matt University of Delaware Energy Institute #12;Efficiency drives reduced $/W.... http://www.nrel.gov/ncpv/! Shockley-Queisser Limit! *adopted from http://www.lbl.gov/Science-Articles/Archive/MSD-full-spectrum-solar

  2. Heating and current drive systems for TPX

    SciTech Connect (OSTI)

    Swain, D.; Goranson, P. [Oak Ridge National Lab., TN (United States); Halle, A. von; Bernabei, S.; Greenough, N. [Princeton Univ., NJ (United States). Plasma Physics Lab.

    1994-05-24T23:59:59.000Z

    The heating and current drive (H and CD) system proposed for the TPX tokamak will consist of ion cyclotron, neutral beam, and lower hybrid systems. It will have 17.5 MW of installed H and CD power initially, and can be upgraded to 45 MW. It will be used to explore advanced confinement and fully current-driven plasma regimes with pulse lengths of up to 1,000 s.

  3. System studies of rf current drive for MST

    SciTech Connect (OSTI)

    Anderson, J. K.; Burke, D. R.; Forest, C. B.; Goetz, J. A.; Hendries, E. R.; Seltzman, A. H.; Thomas, M. A. [Department of Physics, University of Wisconsin, Madison, WI (United States); Diem, S. [Oak Ridge National Laboratory, Oak Ridge TN (United States); Harvey, R. W. [CompX, Del Mar, CA (United States); Kaufman, M. C. [Department of Physics, University of Wisconsin, Madison, WI (United States); Oak Ridge National Laboratory, Oak Ridge, TN (United States)

    2011-12-23T23:59:59.000Z

    Two rf schemes are being studied on the MST reversed field pinch for their potential in current profile control experiments. MHD modeling has shown that a substantial externally-driven off axis parallel current can improve stability of the dominant core tearing modes. A radially localized axisymmetric population of fast electrons has been observed by SXR emission during LH injection (100kW at 800MHz), and is consistent with CQL3D modeling which predicts a small driven current. Computational work suggests that doubling the input power will statistically improve the LH-induced SXR signal to background ratio, and that about 2MW of injected power (an order of magnitude increase) will drive enough current for stabilization of tearing modes. Additionally, a 1 MW 5.5 GHz electron Bernstein wave (EBW) experiment is under construction, which utilizes a very simple and compact antenna compatible with the demands of the RFP. EBW allows access to electron cyclotron heating and current drive in the overdense plasma. Coupling of the external electromagnetic wave to the EBW has been demonstrated, and initial tests at {approx}100kW power have produced a small, localized xray flux consistent with rf heating and high diffusivity of fast electrons. Computational work is currently underway to answer the very important questions of how much power is required, and what level of electron diffusivity is tolerable, to generate a consequential amount of EBW current.

  4. Current Drive in a Ponderomotive Potential with Sign Reversal

    SciTech Connect (OSTI)

    N.J. Fisch; J.M. Rax; I.Y. Dodin

    2003-07-30T23:59:59.000Z

    Noninductive current drive can be accomplished through ponderomotive forces with high efficiency when the potential changes sign over the interaction region. The effect can practiced upon both ions and electrons. The current drive efficiencies, in principle, might be higher than those possible with conventional radio-frequency current-drive techniques, since different considerations come into play.

  5. Active surge control of centrifugal compressors using drive torque

    E-Print Network [OSTI]

    Gravdahl, Jan Tommy

    Active surge control of centrifugal compressors using drive torque Jan Tommy Gravdahl , Olav control is presented. A centrifugal compressor driven by an electrical motor is studied, and the drive of the drive as control ensures exponential convergence. The proposed method is simulated on a compressor model

  6. A Hybrid Controller for Autonomous Vehicles Driving on Automated Highways #

    E-Print Network [OSTI]

    Girault, Alain

    A Hybrid Controller for Autonomous Vehicles Driving on Automated Highways # Alain Girault a a Inria the problem of the hybrid control of autonomous vehicles driving on automated highways. Vehicles to be dealt with: a vehicle driving in a single­lane highway must never collide with its leading vehicle

  7. LAPP-TECH-2013-01 DRIVE BEAM STRIPLINE BPM

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 LAPP-TECH-2013-01 DRIVE BEAM STRIPLINE BPM ELECTRONICS AND ACQUISITION. Jean-Marc Nappa, Jean- around acquisition and components tests for drive beam stripline BPM read-out. The choice of the presented stripline BPM as the drive beam position monitor is not definitive. The aim of this study

  8. Production-management techniques for water-drive gas reservoirs. Annual Report, August 1990-December 1991

    SciTech Connect (OSTI)

    Hower, T.L.; Abbott, W.A.; Arsenault, J.W.; Jones, R.E.

    1992-01-01T23:59:59.000Z

    The project was designed to investigate production management strategies through a field study approach. The initial task was to prepare a summary of industry experience with water-drive gas and water-drive gas storage reservoirs. This activity was necessary to define the variety of reservoir situations in which water influx occurs, to identify those cases where alternative production practices will increase ultimate recovery, and to develop techniques to better characterize these reservoirs for further analysis. Four fields were selected for study: 1 onshore Gulf Coast gas reservoir, 2 offshore Gulf Coast reservoirs, and 1 mid-continent aquifier gas storage field. A modified material balance technique was developed and validated which predicts the pressure and production performance of water-drive gas reservoirs. This method yields more accurate results than conventional water influx techniques.

  9. Integrated Vehicle Thermal Management - Combining Fluid Loops in Electric Drive Vehicles (Presentation)

    SciTech Connect (OSTI)

    Rugh, J. P.

    2013-07-01T23:59:59.000Z

    Plug-in hybrid electric vehicles and electric vehicles have increased vehicle thermal management complexity, using separate coolant loop for advanced power electronics and electric motors. Additional thermal components result in higher costs. Multiple cooling loops lead to reduced range due to increased weight. Energy is required to meet thermal requirements. This presentation for the 2013 Annual Merit Review discusses integrated vehicle thermal management by combining fluid loops in electric drive vehicles.

  10. Characterization of dynamic change of Fan-delta reservoir properties in water-drive development

    SciTech Connect (OSTI)

    Wu Shenghe; Xiong Qihua; Liu Yuhong [Univ. of Petroleum Changping, Beijing (China)

    1997-08-01T23:59:59.000Z

    Fan-delta reservoir in Huzhuangji oil field of east China, is a typical highly heterogeneous reservoir. The oil field has been developed by water-drive for 10 years, but the oil recovery is less than 12%, and water cut is over 90%, resulting from high heterogeneity and serious dynamic change of reservoir properties. This paper aims at the study of dynamic change of reservoir properties in water-drive development. Through quantitative imaging analysis and mercury injection analysis of cores from inspection wells, the dynamic change of reservoir pore structure in water-drive development was studied. The results show that the {open_quotes}large pore channels{close_quotes} develop in distributary channel sandstone and become larger in water-drive development, resulting in more serious pore heterogeneity. Through reservoir sensitivity experiments, the rock-fluid reaction in water-drive development is studied. The results show the permeability of some distal bar sandstone and deserted channel sandstone becomes lower due to swelling of I/S clay minerals in pore throats. OD the other hand, the permeability of distributary channel and mouth bar sandstone become larger because the authigenic Koalinites in pore throats are flushed away with the increase of flow rate of injection water. Well-logging analysis of flooded reservoirs are used to study the dynamic change of reservoir properties in various flow units. The distribution of remaining oil is closely related to the types and distribution of flow units.

  11. Comparing Two Types of Magnetically- Coupled Adjustable Speed Drives with Variable Frequency Drives in Pump and Fan Applications

    E-Print Network [OSTI]

    Anderson, K. J.; Chvala, W. D.

    This paper presents the results from laboratory tests on MagnaDrive Corporations fixed-magnet magnetically-coupled adjustable speed drive (MC-ASD) and Coyote Electronics electromagnetic MC-ASD as compared to a typical variable frequency drive (VFD...

  12. Noninductive current drive experiments on DIII-D, and future plans

    SciTech Connect (OSTI)

    Prater, R. [General Atomics, San Diego, CA (United States); Austin, M.E. [Maryland Univ., College Park, MD (United States); Baity, F.W. [Oak Ridge National Lab., TN (United States)] [and others

    1994-02-01T23:59:59.000Z

    Experiments on DIII-D (and other tokamaks) have shown that improved performance can follow from optimization of the current density profile. Increased confinement of energy and a higher limit on beta have both been found in discharges in which the current density profile is modified through transient means, such as ramping of current or elongation. Peaking of the current distribution to obtain discharges with high internal inductance {ell}{sub i} has been found to be beneficial. Alternatively, discharges with broader profiles, as in the VH-mode or with high beta poloidal, have shown improved performance. Noninductive current drive is a means to access these modes of improved confinement on a steady state basis. Accordingly, experiments on noninductive current drive are underway on the DIII-D tokamak using fast waves, electron cyclotron waves. Recent experiments on fast wave current drive have demonstrated the ability to drive up to 180 kA of noninductive current using 1.5 MW of power at 60 MHz, including the contribution from 1 MW of ECCD and the bootstrap current. Higher power rf current drive systems are needed to strongly affect the current profile on DIII-D. An upgrade to the FWCD system is underway to increase the total power to 6 MW, using two additional antennas and two new 30 to 120 MHz transmitters. Additionally, a 1 MW prototype ECH system at 110 GHz is being developed (with eventual upgrade to 10 MW). With these systems, noninductive current drive at the 1 MA level will be available for experiments on profile control in DIII-D.

  13. Oscillatory nonohomic current drive for maintaining a plasma current

    DOE Patents [OSTI]

    Fisch, N.J.

    1984-01-01T23:59:59.000Z

    Apparatus and methods are described for maintaining a plasma current with an oscillatory nonohmic current drive. Each cycle of operation has a generation period in which current driving energy is applied to the plasma, and a relaxation period in which current driving energy is removed. Plasma parameters, such as plasma temperature or plasma average ionic charge state, are modified during the generation period so as to oscillate plasma resistivity in synchronism with the application of current driving energy. The invention improves overall current drive efficiencies.

  14. Heel and toe driving on fuel cell vehicle

    DOE Patents [OSTI]

    Choi, Tayoung; Chen, Dongmei

    2012-12-11T23:59:59.000Z

    A system and method for providing nearly instantaneous power in a fuel cell vehicle. The method includes monitoring the brake pedal angle and the accelerator pedal angle of the vehicle, and if the vehicle driver is pressing both the brake pedal and the accelerator pedal at the same time and the vehicle is in a drive gear, activating a heel and toe mode. When the heel and toe mode is activated, the speed of a cathode compressor is increased to a predetermined speed set-point, which is higher than the normal compressor speed for the pedal position. Thus, when the vehicle brake is removed, the compressor speed is high enough to provide enough air to the cathode, so that the stack can generate nearly immediate power.

  15. Electric vehicle drive train with direct coupling transmission

    DOE Patents [OSTI]

    Tankersley, Jerome B. (Fredericksburg, VA); Boothe, Richard W. (Roanoke, VA); Konrad, Charles E. (Roanoke, VA)

    1995-01-01T23:59:59.000Z

    An electric vehicle drive train includes an electric motor and an associated speed sensor, a transmission operable in a speed reduction mode or a direct coupled mode, and a controller responsive to the speed sensor for operating the transmission in the speed reduction mode when the motor is below a predetermined value, and for operating the motor in the direct coupled mode when the motor speed is above a predetermined value. The controller reduces the speed of the motor, such as by regeneratively braking the motor, when changing from the speed reduction mode to the direct coupled mode. The motor speed may be increased when changing from the direct coupled mode to the speed reduction mode. The transmission is preferably a single stage planetary gearbox.

  16. Electric vehicle drive train with direct coupling transmission

    DOE Patents [OSTI]

    Tankersley, J.B.; Boothe, R.W.; Konrad, C.E.

    1995-04-04T23:59:59.000Z

    An electric vehicle drive train includes an electric motor and an associated speed sensor, a transmission operable in a speed reduction mode or a direct coupled mode, and a controller responsive to the speed sensor for operating the transmission in the speed reduction mode when the motor is below a predetermined value, and for operating the motor in the direct coupled mode when the motor speed is above a predetermined value. The controller reduces the speed of the motor, such as by regeneratively braking the motor, when changing from the speed reduction mode to the direct coupled mode. The motor speed may be increased when changing from the direct coupled mode to the speed reduction mode. The transmission is preferably a single stage planetary gearbox. 6 figures.

  17. Veeco Develops Tools to Drive Down HBLED Costs

    Broader source: Energy.gov [DOE]

    Veeco is working in partnership with Sandia National Laboratories and Philips Lumileds to drive down the cost of high-brightness LEDs by implementing process simulation tools and by improving temperature measurement and control methods to increase MOCVD yield. Veeco is working with Sandia to reduce the cost of ownership (COO) of the deposition equipment by, for example, using a heated flow flange, which reduces the consumption of the expensive precursors (ammonia, nitrogen, hydrogen, and the metal organics) by 40 percent. Two different types of pyrometers developed by Sandia and Veeco are being tested by Philips Lumileds to control the substrate temperature, which helps determine the color of the LED. If all works according to plan, the COO will be reduced by at least 75 percent by improving throughput, growth uniformity, yield, and temperature stabilization.

  18. Electrifying Your Drive | 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 onYouTube YouTube Note: Since the YouTube|6721 Federal Register / Vol.6:Energy|Electrifying Your Drive Electrifying

  19. Traction Drive Systems Breakout | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin Transition in2, 2003Tool ofTopo II:7.1Tracking LivingTraction Drive

  20. Eco Drive Capital Partners | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluating A Potential MicrohydroDistrictInformationEau ClaireEco AlternativeDrive

  1. Has Driving Come to a Halt?

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Buildingto17 3400, U.S.MajorMarketsNov-14 Dec-14Has Driving Come to a Halt?

  2. Jefferson Lab Visitor's Center - Driving in Virginia

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12 InvestigationLabNewLabLab To ReceiveUserDriving

  3. MASSACHUSETTS DRIVES PERFORMANCE MEASUREMENT | 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 onYouTube YouTube Note: Since the.pdfBreaking ofOil & Gas »ofMarketing |Prepare For more(VersionMASSACHUSETTS DRIVES

  4. Driving/Idling Resources | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny:Revised Finding of No53197E TDrew Bittner About Us Drew BittnerHome to aDriving

  5. GenDrive Limited | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2,AUDIT REPORTEnergyFarms A SUK Place: Newport,Gate SolarGroupsGenDrive

  6. Driving Green com | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOE FacilityDimondale,South, New Jersey: EnergyDrewDrilling FluidsIdahoDriving

  7. National Drive Electric Week | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011 Strategic2 OPAM615_Cost Estimating35.docMusings on| DepartmentEnergyNational Drive

  8. Electric-drive tractability indicator integrated in hybrid electric vehicle tachometer

    SciTech Connect (OSTI)

    Tamai, Goro; Zhou, Jing; Weslati, Feisel

    2014-09-02T23:59:59.000Z

    An indicator, system and method of indicating electric drive usability in a hybrid electric vehicle. A tachometer is used that includes a display having an all-electric drive portion and a hybrid drive portion. The all-electric drive portion and the hybrid drive portion share a first boundary which indicates a minimum electric drive usability and a beginning of hybrid drive operation of the vehicle. The indicated level of electric drive usability is derived from at least one of a percent battery discharge, a percent maximum torque provided by the electric drive, and a percent electric drive to hybrid drive operating cost for the hybrid electric vehicle.

  9. A Study on Potential Environmental Benefits of Green Driving Strategies with NGSIM Data

    E-Print Network [OSTI]

    Jin, Wen-Long; Yuan, Daji; Yang, Hao

    2010-01-01T23:59:59.000Z

    before green driving, solid lines for those after greenbefore green driving, solid lines for those after green

  10. Increasing productivity: Another approach

    SciTech Connect (OSTI)

    Norton, F.J.

    1996-06-10T23:59:59.000Z

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

  11. Eco-Driving: Drive Green, Save Green Part of the Clean Fuel Advanced Technology Project

    E-Print Network [OSTI]

    for · Equipment: Vehicle choice makes a difference #12;Eco-Driving Practices 1. Watch your speed Every 5 mph you for XMT Construction of Surrey) #12;Resources For Economical Choices · Auto Alliance www scheduling the complete training: NC State University / North Carolina Solar Center Clean Transportation

  12. VIRTUAL REALITY DRIVING SIMULATION: Integrating Infrastructure Plans, Traffic Models, and Driving Behaviors

    E-Print Network [OSTI]

    to include 3D models, animated traffic and human characters, as well as functions that allow users to take-1- VIRTUAL REALITY DRIVING SIMULATION: Integrating Infrastructure Plans, Traffic Models@forum8.co.jp Summary: This paper presents a virtual reality (VR) system that enables large

  13. In Proc. of 4th IEEE Int'l Conference on Mobile and Wireless Communications Networks, Stockholm, Sweden, Sep. 9-11, 2002 Congestion Sensitive Downlink Power Control

    E-Print Network [OSTI]

    Siris, Vasilios A.

    , Sweden, Sep. 9-11, 2002 Congestion Sensitive Downlink Power Control for Wideband CDMA Systems Vasilios A-- We present a model for efficient and robust power control in the downlink of Wideband CDMA wireless. INTRODUCTION Current power control algorithms for wireless systems in- crease the power when the interference

  14. The impacts of congestion on time-definitive urban freight distribution networks CO2 emission levels: Results from a case study in Portland,

    E-Print Network [OSTI]

    Bertini, Robert L.

    The impacts of congestion on time-definitive urban freight distribution networks CO2 emission Accepted 29 November 2010 Keywords: Vehicle routing Time-dependent travel time speed GHG or CO2 emissions pressures to limit the impacts associated with CO2 emissions are mounting rapidly. A key challenge

  15. The Impacts of Congestion on Time-definitive Urban Freight Distribution1 Networks CO2 Emission Levels: results from a case study in Portland,2

    E-Print Network [OSTI]

    Bertini, Robert L.

    1 The Impacts of Congestion on Time-definitive Urban Freight Distribution1 Networks CO2 Emission pressures to limit the impacts13 associated with CO2 emissions are mounting rapidly. A key challenge on CO2 emissions are hindered by the complexities of vehicle routing18 problems with time

  16. Entropy Shows that Global Warming Should Cause Increased Variability in the Weather

    E-Print Network [OSTI]

    John Michael Williams

    2001-02-21T23:59:59.000Z

    Elementary physical reasoning seems to leave it inevitable that global warming would increase the variability of the weather. The first two terms in an approximation to the global entropy are used to show that global warming has increased the free energy available to drive the weather, and that the variance of the weather should increase correspondingly.

  17. Traction drive automatic transmission for gas turbine engine driveline

    DOE Patents [OSTI]

    Carriere, Donald L. (Livonia, MI)

    1984-01-01T23:59:59.000Z

    A transaxle driveline for a wheeled vehicle has a high speed turbine engine and a torque splitting gearset that includes a traction drive unit and a torque converter on a common axis transversely arranged with respect to the longitudinal centerline of the vehicle. The drive wheels of the vehicle are mounted on a shaft parallel to the turbine shaft and carry a final drive gearset for driving the axle shafts. A second embodiment of the final drive gearing produces an overdrive ratio between the output of the first gearset and the axle shafts. A continuously variable range of speed ratios is produced by varying the position of the drive rollers of the traction unit. After starting the vehicle from rest, the transmission is set for operation in the high speed range by engaging a first lockup clutch that joins the torque converter impeller to the turbine for operation as a hydraulic coupling.

  18. Coordinating Garbage Collection for Arrays of Solid-state Drives

    SciTech Connect (OSTI)

    Kim, Youngjae [ORNL] [ORNL; Lee, Junghee [ORNL] [ORNL; Oral, H Sarp [ORNL] [ORNL; Dillow, David A [ORNL] [ORNL; Wang, Feiyi [ORNL] [ORNL; Shipman, Galen M [ORNL] [ORNL

    2014-01-01T23:59:59.000Z

    Although solid-state drives (SSDs) offer significant performance improvements over hard disk drives (HDDs) for a number of workloads, they can exhibit substantial variance in request latency and throughput as a result of garbage collection (GC). When GC conflicts with an I/O stream, the stream can make no forward progress until the GC cycle completes. GC cycles are scheduled by logic internal to the SSD based on several factors such as the pattern, frequency, and volume of write requests. When SSDs are used in a RAID with currently available technology, the lack of coordination of the SSD-local GC cycles amplifies this performance variance. We propose a global garbage collection (GGC) mechanism to improve response times and reduce performance variability for a RAID of SSDs. We include a high-level design of SSD-aware RAID controller and GGC-capable SSD devices and algorithms to coordinate the GGC cycles. We develop reactive and proactive GC coordination algorithms and evaluate their I/O performance and block erase counts for various workloads. Our simulations show that GC coordination by a reactive scheme improves average response time and reduces performance variability for a wide variety of enterprise workloads. For bursty, write-dominated workloads, response time was improved by 69% and performance variability was reduced by 71%. We show that a proactive GC coordination algorithm can further improve the I/O response times by up to 9% and the performance variability by up to 15%. We also observe that it could increase the lifetimes of SSDs with some workloads (e.g. Financial) by reducing the number of block erase counts by up to 79% relative to a reactive algorithm for write-dominant enterprise workloads.

  19. A motor drive control system for the Lidar Polarimeter

    E-Print Network [OSTI]

    Leung, Waiming

    1977-01-01T23:59:59.000Z

    A MOTOR DRIVE CONTROL SYSTEM FOR THE LIDAR POLARIMETER A Thesis by Waiming Leung Submitted to the Graduate College of Texas A/M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCF, May 1977 Major... Subject: Electrical Engineering A MOTOR DRIVE CONTROL SYSTEM FOR THE LIDAR POLARIMETER A Thesis by Waiming Leung Approved as to style and content by: Chairman o Comm' ee ea o epartment Member Mem er May 1977 ABSTRACT A Motor Drive Control...

  20. A FORMULA FOR EFFICIENCY OF FAST WAVE CURRENT DRIVE

    E-Print Network [OSTI]

    Karney, Charles

    A FORMULA FOR EFFICIENCY OF FAST WAVE CURRENT DRIVE IN FUSION DEVICES S.C. CHIU, C.F.F. KARNEY,* R://charles.karney.info/biblio/chiu92.html #12;Chiu e t al. 4 FORMULA FOR EFFICIENCY OF FAST WAVE CURRENT DRIVE IN FUSION DEVICES A FORMULA FOR EFFICIENCY OF FAST WAVE CURRENT DRIVE IN FUSION DEVICES* S.C. CHIU,C.F.F. KARNEY,~R.W. HARVEY

  1. Driving conditions dependence of magneto-electroluminescence in tri-(8-hydroxyquinoline)-aluminum based organic light emitting diodes

    E-Print Network [OSTI]

    Peng, Qiming; Li, Xianjie; Li, Mingliang; Li, Feng

    2011-01-01T23:59:59.000Z

    we investigated the magneto-electroluminescence (MEL) in tri-(8-hydroxyquinoline)-aluminum based organic light-emitting diodes (OLEDs) through the steady-state and transient method simultaneously. The MELs show the great different behaviors when we turn the driving condition from a constant voltage to a pulse voltage. For devices driven by the constant voltage, the MELs are similar with the literature data; for devices driven by the pulse voltage, the MELs are quite different, they firstly increase to a maximum then decrease as the magnetic field increases continuously. Negative MELs can be seen when both the magnetic field and driving voltage are high enough.

  2. Side-payment profitability and interacting eyeball ISPs under convex demand-response modeling congestion-sensitive applications

    E-Print Network [OSTI]

    Kesidis, George

    2011-01-01T23:59:59.000Z

    This paper is concerned with the issue of side payments between content providers (CPs) and Internet service (access bandwidth) providers (ISPs) in an Internet that is potentially not neutral. We herein generalize past results modeling the ISP and CP interaction as a noncooperative game in two directions. We consider different demand response models (price sensitivities) for different provider types in order to explore when side payments are profitable to the ISP. Also, we consider convex (non-linear) demand response to model demand triggered by traffic which is sensitive to access bandwidth congestion, particularly delay-sensitive interactive real-time applications. Finally, we consider a model with two competing "eyeball" ISPs with transit pricing of net traffic at their peering point to study the effects of caching remote content.

  3. Productivity increases in science

    SciTech Connect (OSTI)

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

    1993-02-01T23:59:59.000Z

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

  4. Productivity increases in science

    SciTech Connect (OSTI)

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

    1993-02-01T23:59:59.000Z

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

  5. Vehicle drive module having improved terminal design

    DOE Patents [OSTI]

    Beihoff, Bruce C.; Radosevich, Lawrence D.; Phillips, Mark G.; Kehl, Dennis L.; Kaishian, Steven C.; Kannenberg, Daniel G.

    2006-04-25T23:59:59.000Z

    A terminal structure for vehicle drive power electronics circuits reduces the need for a DC bus and thereby the incidence of parasitic inductance. The structure is secured to a support that may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. The support may form a shield from both external EMI/RFI and from interference generated by operation of the power electronic circuits. Features may be provided to permit and enhance connection of the circuitry to external circuitry, such as by direct contact between the terminal assembly and AC and DC circuit components. Modular units may be assembled that may be coupled to electronic circuitry via plug-in arrangements or through interface with a backplane or similar mounting and interconnecting structures.

  6. Vehicle drive module having improved cooling configuration

    DOE Patents [OSTI]

    Radosevich, Lawrence D.; Meyer, Andreas A.; Kannenberg, Daniel G.; Kaishian, Steven C.; Beihoff, Bruce C.

    2007-02-13T23:59:59.000Z

    An electric vehicle drive includes a thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. Power electronic circuits are thermally matched, such as between component layers and between the circuits and the support. The support may form a shield from both external EMI/RFI and from interference generated by operation of the power electronic circuits. Features may be provided to permit and enhance connection of the circuitry to external circuitry, such as improved terminal configurations. Modular units may be assembled that may be coupled to electronic circuitry via plug-in arrangements or through interface with a backplane or similar mounting and interconnecting structures.

  7. Vehicle drive module having improved EMI shielding

    DOE Patents [OSTI]

    Beihoff, Bruce C.; Kehl, Dennis L.; Gettelfinger, Lee A.; Kaishian, Steven C.; Phillips, Mark G.; Radosevich, Lawrence D.

    2006-11-28T23:59:59.000Z

    EMI shielding in an electric vehicle drive is provided for power electronics circuits and the like via a direct-mount reference plane support and shielding structure. The thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. The support forms a shield from both external EMI/RFI and from interference generated by operation of the power electronic circuits. Features may be provided to permit and enhance connection of the circuitry to external circuitry, such as improved terminal configurations. Modular units may be assembled that may be coupled to electronic circuitry via plug-in arrangements or through interface with a backplane or similar mounting and interconnecting structures.

  8. US DRIVE Advanced Combustion and Emission Control Technical Team...

    Energy Savers [EERE]

    Advanced Combustion and Emission Control Technical Team Roadmap US DRIVE Advanced Combustion and Emission Control Technical Team Roadmap The ACEC focuses on advanced engine and...

  9. Using Partnerships to Drive Demand and Provide Services in Communities...

    Energy Savers [EERE]

    and Discussion Summary More Documents & Publications Strategies for Marketing and Driving Demand for Commercial Financing Products Information Technology Tools for Multifamily...

  10. Strategies for Marketing and Driving Demand for Commercial Financing...

    Energy Savers [EERE]

    Slides and Discussion Summary More Documents & Publications Using Partnerships to Drive Demand and Provide Services in Communities Financial Vehicles within an Integrated Energy...

  11. ae stars driving: Topics by E-print Network

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

    - Isolated Herbig Ae Stars Driving Herbig-Haro Flows Astrophysics (arXiv) Summary: Infrared photometry and spectroscopy covering a time span of a quarter century are presented...

  12. advanced electrical drives: Topics by E-print Network

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

    require large voltage changes on very short time scales. Since piezos behave electrically as capacitors, this requires a drive circuit capable of quickly sourcing or sinking...

  13. Vehicle Technologies Office: US DRIVE Materials Technical Team...

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

    vehicle efficiency regardless of the vehicle size or propulsion system employed. This roadmap lays out the future direction for this research. U.S. DRIVE Materials Technical Team...

  14. Vehicle Technologies Office: U.S. DRIVE 2014 Technical Accomplishments...

    Energy Savers [EERE]

    Report More Documents & Publications US DRIVE Electrochemical Energy Storage Technical Team Roadmap Vehicle Technologies Office: 2009 Energy Storage R&D Annual Progress Report...

  15. Accelerating the Electrification of U.S. Drive Trains: Ready...

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

    Ready and Affordable Technology Solutions for Domestically Manufactured Advanced Batteries Accelerating the Electrification of U.S. Drive Trains: Ready and Affordable...

  16. The Drive for Energy Diversity and Sustainability: The Impact...

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

    Diversity and Sustainability: The Impact on Transportation Fuels and Propulsion System Portfolios The Drive for Energy Diversity and Sustainability: The Impact on Transportation...

  17. U.S. DRIVE Highlights of Technical Accomplishments 2011: Super...

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

    2011 U.S. DRIVE Highlight Advanced Combustion and Emission Control 2011 Super Duty Diesel Truck with NO x Aftertreatment Diesel engine aftertreatment: Minimizing NO x emissions...

  18. Solutia: Utilizing Sub-Metering to Drive Energy Project Approvals...

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

    plant. Solutia: Utilizing Sub-Metering to Drive Energy Project Approvals Through Data (July 2011) More Documents & Publications Nissan North America: How Sub-Metering...

  19. Defining Real World Drive Cycles to Support APRF Technology Evaluation...

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

    DOE strategic goalsbarriers addressed - F: Constant advances in technology * Fuel energy consumption variability of different technologies to driving variation - D: Lack of...

  20. addressing teen driving: Topics by E-print Network

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

    Page Last Page Topic Index 1 In Vehicle Technology to Correct Teen Driving Behavior Energy Storage, Conversion and Utilization Websites Summary: In Vehicle Technology to Correct...

  1. ac motor drives: Topics by E-print Network

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

    - TxSpace Summary: and Quantitative Account Gear-Train Servo Error Types. IV. DC VARIABLE SPEED MOTOR DRIVE DESIGN CONSIDERATIONS AND RFALIZATION. Introduction. 27 29 30...

  2. ac motor drive: Topics by E-print Network

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

    - TxSpace Summary: and Quantitative Account Gear-Train Servo Error Types. IV. DC VARIABLE SPEED MOTOR DRIVE DESIGN CONSIDERATIONS AND RFALIZATION. Introduction. 27 29 30...

  3. assisted driving system: Topics by E-print Network

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

    - TxSpace Summary: and Quantitative Account Gear-Train Servo Error Types. IV. DC VARIABLE SPEED MOTOR DRIVE DESIGN CONSIDERATIONS AND RFALIZATION. Introduction. 27 29 30...

  4. US DRIVE Materials Technical Team Roadmap | Department of Energy

    Energy Savers [EERE]

    Materials Technical Team Roadmap US DRIVE Materials Technical Team Roadmap The Materials Technical Team (MTT) focuses primarily on reducing the mass of structural systems such as...

  5. Supercomputers Drive Discovery of Materials for More Efficient...

    Office of Science (SC) Website

    Supercomputers Drive Discovery of Materials for More Efficient Carbon Capture Advanced Scientific Computing Research (ASCR) ASCR Home About Research Facilities Science Highlights...

  6. Driving the Future Argonne's vehicle systems reseArch

    E-Print Network [OSTI]

    Kemner, Ken

    and commercialization of next- generation vehicles. APRF engineers use the facility's two-wheel drive (2WD) and four, drivetrain components, control strategies and

  7. Watch Energy Secretary Moniz Test Drive the Toyota Mirai

    Broader source: Energy.gov [DOE]

    The Energy Department posted a video of ?Secretary Ernest Moniz driving the Toyota Mirai, the first fuel cell electric vehicle (FCEV) for sale in the United States.

  8. actively drives processive: Topics by E-print Network

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

    and Hyoid during Chewing in Gnathostomes Biology and Medicine Websites Summary: SYMPOSIUM Evolution of Muscle Activity Patterns Driving Motions of the Jaw and Hyoid during Chewing....

  9. High-Temperature, Air-Cooled Traction Drive Inverter Packaging

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

    Air-Cooled Traction Drive Inverter Packaging Madhu Chinthavali Oak Ridge National Laboratory June 10, 2010 Project ID: APE025 This presentation does not contain any proprietary,...

  10. Phonon localization drives nanoregions in a relaxor ferroelectric...

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

    localization drives nanoregions in a relaxor ferroelectric April 11, 2014 This inelastic neutron scattering spectrum shows the localizing modes (LMs) between the transverse optic...

  11. EV Everywhere Electric Drive Workshop: Preliminary Target-Setting...

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

    Challenge - Electric Drive (Power Electronics and Electric Machines) Workshop on July 24, 2012 held at the Doubletree O'Hare, Chicago, IL. 3warded.pdf More Documents &...

  12. EV Everywhere Grand Challenge Introduction for Electric Drive...

    Energy Savers [EERE]

    David Danielson at the EV Everywhere Grand Challenge - Electric Drive (Power Electronics and Electric Machines) Workshop on July 24, 2012 held at the Doubletree O'Hare,...

  13. EV Everywhere Workshop: Traction Drive Systems Breakout Group...

    Energy Savers [EERE]

    Presentation given at the EV Everywhere Grand Challenge Electric Drive (Power Electronics and Electric Machines) Workshop on July 24, 2012 held at the Doubletree O'Hare,...

  14. Electrical motor/generator drive apparatus and method

    DOE Patents [OSTI]

    Su, Gui Jia

    2013-02-12T23:59:59.000Z

    The present disclosure includes electrical motor/generator drive systems and methods that significantly reduce inverter direct-current (DC) bus ripple currents and thus the volume and cost of a capacitor. The drive methodology is based on a segmented drive system that does not add switches or passive components but involves reconfiguring inverter switches and motor stator winding connections in a way that allows the formation of multiple, independent drive units and the use of simple alternated switching and optimized Pulse Width Modulation (PWM) schemes to eliminate or significantly reduce the capacitor ripple current.

  15. Cap-and-Trade Modeling and Analysis: Congested Electricity Market Equilibrium

    E-Print Network [OSTI]

    Limpaitoon, Tanachai

    2012-01-01T23:59:59.000Z

    firm 10 withholds hydroelectric power and completelyby increasing hydroelectric power. Nonetheless, firm 10slightly more of its hydroelectric power to fulfill firm 3’s

  16. Simulated fuel economy and emissions performance during city and interstate driving for a heavy-duty hybrid truck

    SciTech Connect (OSTI)

    Daw, C Stuart [ORNL; Gao, Zhiming [ORNL; Smith, David E [ORNL; LaClair, Tim J [ORNL; Pihl, Josh A [ORNL; Edwards, Kevin Dean [ORNL

    2013-01-01T23:59:59.000Z

    We compare simulated fuel economy and emissions for both conventional and hybrid class 8 heavy-duty diesel trucks operating over multiple urban and highway driving cycles. Both light and heavy freight loads were considered, and all simulations included full aftertreatment for NOx and particulate emissions controls. The aftertreatment components included a diesel oxidation catalyst (DOC), urea-selective catalytic NOx reduction (SCR), and a catalyzed diesel particulate filter (DPF). Our simulated hybrid powertrain was configured with a pre-transmission parallel drive, with a single electric motor between the clutch and gearbox. A conventional HD truck with equivalent diesel engine and aftertreatment was also simulated for comparison. Our results indicate that hybridization can significantly increase HD fuel economy and improve emissions control in city driving. However, there is less potential hybridization benefit for HD highway driving. A major factor behind the reduced hybridization benefit for highway driving is that there are fewer opportunities to utilize regenerative breaking. Our aftertreatment simulations indicate that opportunities for passive DPF regeneration are much greater for both hybrid and conventional trucks during highway driving due to higher sustained exhaust temperatures. When passive DPF regeneration is extensively utilized, the fuel penalty for particulate control is virtually eliminated, except for the 0.4%-0.9% fuel penalty associated with the slightly higher exhaust backpressure.

  17. Development of a Micro Drive-Under Tractor- Research and Application

    E-Print Network [OSTI]

    Lothar Schulze; Sebastian Behling; Stefan Buhrs

    Abstract—The in-plant transport of goods is increasingly becoming automated. All reasons that argue for automation result in a better cost effectiveness. An extended percentage of the load units are lightweight and small goods that often occur either as single parts or as several articles in multiple small load carriers. Modern logistics concepts demand an efficient transport and the delivery within the intended time. To reduce the covered distance a flexible adjustment of the load capacity to single or accumulated transport is beneficial so that the vehicle can carry the required amount of goods without being oversized. To fulfill these specifications the paper at hand presents the development and realization of a new type of Automated Guided Vehicle that is optimized for the transportation of small goods [1]. The construction is carried out as an omnidirectional drive-under tractor in compact dimensions. The main purpose of the vehicle is the automated towing of trailers. Additionally the transport of single small load carriers can be accomplished by using a lifting table. Therefore it is for the first possible time to use a towing and carrying vehicle with a variable load capacity. For the drive system Mecanum wheels are used to enable omnidirectional maneuverability. Index Terms—Automated Guided Vehicle, drive-under tractor, omnidirectional drive.

  18. Analysis of national pay-as-you-drive insurance systems and other variable driving charges

    SciTech Connect (OSTI)

    Wenzel, T.

    1995-07-01T23:59:59.000Z

    Under Pay as You Drive insurance (PAYD), drivers would pay part of their automobile insurance premium as a per-gallon surcharge every time they filled their gas tank. By transfering a portion of the cost of owning a vehicle from a fixed cost to a variable cost, PAYD would discourage driving. PAYD has been proposed recently in California as a means of reforming how auto insurance is provided. PAYD proponents claim that, by forcing drivers to purchase at least part of their insurance every time they refuel their car, PAYD would reduce or eliminate the need for uninsured motorist coverage. Some versions of PAYD proposed in California have been combined with a no-fault insurance system, with the intention of further reducing premiums for the average driver. Other states have proposed PAYD systems that would base insurance premiums on annual miles driven. In this report we discuss some of the qualitative issues surrounding adoption of PAYD and other policies that would convert other fixed costs of driving (vehicle registration, safety/emission control system inspection, and driver license renewal) to variable costs. We examine the effects of these policies on two sets of objectives: objectives related to auto insurance reform, and those related to reducing fuel consumption, CO{sub 2} emissions, and vehicle miles traveled. We pay particular attention to the first objective, insurance reform, since this has generated the most interest in PAYD to date, at least at the state level.

  19. Disk Quota Increase Request

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

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

  20. Residential propane prices increase

    Gasoline and Diesel Fuel Update (EIA)

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

  1. Residential propane prices increase

    Gasoline and Diesel Fuel Update (EIA)

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

  2. Managing Increased Charging Demand

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

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

  3. Increasing Employee PEV Awareness

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

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

  4. Conceptual Design - Polar Drive Ignition Campaign

    SciTech Connect (OSTI)

    Hansen, R

    2012-04-05T23:59:59.000Z

    The Laboratory for Laser Energetics (LLE) at the University of Rochester is proposing a collaborative effort with Lawrence Livermore National Laboratory (LLNL), Los Alamos National Laboratories (LANL), the Naval Research Laboratory (NRL), and General Atomics (GA) with the goal of developing a cryogenic polar drive (PD) ignition platform on the National Ignition Facility (NIF). The scope of this proposed project requires close discourse among theorists, experimentalists, and laser and system engineers. This document describes how this proposed project can be broken into a series of parallel independent activities that, if implemented, could deliver this goal in the 2017 timeframe. This Conceptual Design document is arranged into two sections: mission need and design requirements. Design requirements are divided into four subsystems: (1) A point design that details the necessary target specifications and laser pulse requirements; (2) The beam smoothing subsystem that describes the MultiFM 1D smoothing by spectral dispersion (SSD); (3) New optical elements that include continuous phase plates (CPP's) and distributed polarization rotators (DPR's); and (4) The cryogenic target handling and insertion subsystem, which includes the design, fabrication, testing, and deployment of a dedicated PD ignition target insertion cryostat (PD-ITIC). This document includes appendices covering: the primary criteria and functional requirements, the system design requirements, the work breakdown structure, the target point design, the experimental implementation plan, the theoretical unknowns and technical implementation risks, the estimated cost and schedule, the development plan for the DPR's, the development plan for MultiFM 1D SSD, and a list of acronym definitions. While work on the facility modifications required for PD ignition has been in progress for some time, some of the technical details required to define the specific modifications for a Conceptual Design Review (CDR) remain to be defined. In all cases, the facility modifications represent functional changes to existing systems or capabilities. The bulk of the scope yet to be identified is associated with the DPR's and MultiFM beam smoothing. Detailed development plans for these two subsystems are provided in Appendices H and I; additional discussion of subsystem requirements based on the physics of PD ignition is given in Section 3. Accordingly, LLE will work closely with LLNL to develop detailed conceptual designs for the PD-specific facility modifications, including assessments of the operational impact of implementation (e.g., changing optics for direct rather than indirect-drive illumination and swapping from a hohlraum-based ITIC to one that supports PD). Furthermore, the experimental implementation plan represents the current best understanding of the experimental campaigns required to achieve PD ignition. This plan will evolve based on the lessons learned from the National Ignition Campaign (NIC) and ongoing indirect-drive ignition experiments. The plan does not take the operational realities of the PD configuration into account; configuration planning for the proposed PD experiments is beyond the scope of this document.

  5. Drive System for Traction Applications Using 81-Level Converter

    E-Print Network [OSTI]

    Catholic University of Chile (Universidad Católica de Chile)

    of frequency converter. Keywords: vehicle power electronics, vehicle motor drives. I. INTRODUCTION Power Electronics technologies contribute with important part in the development of electric vehicles. On the otherDrive System for Traction Applications Using 81-Level Converter Juan W. Dixon, Micah E. Ortúzar

  6. Electric Drive Vehicles: A Huge New Distributed Energy Resource

    E-Print Network [OSTI]

    Firestone, Jeremy

    Electric Drive Vehicles: A Huge New Distributed Energy Resource Alec Brooks AC Propulsion, Inc. San Dimas, California www.acpropulsion.com #12;The Old and the New.. Old way of thinking: Electric vehicles are an unnecessary burden to an over- taxed electricity grid New way of thinking: Electric drive vehicles

  7. GNSS Driving Innovation in the Geospatial Industry/Community

    E-Print Network [OSTI]

    Sekercioglu, Y. Ahmet

    GNSS Driving Innovation in the Geospatial Industry/Community Don Grant Associate Professor in Geospatial Science, RMIT University GNSS Futures UNSW, Sydney, 7-8 July 2014 #12;Outline · Does my topic;So is this even the right topic? · Is GNSS driving geospatial innovation? · Or are geospatial

  8. A Hybrid Controller for Autonomous Vehicles Driving on Automated Highways

    E-Print Network [OSTI]

    Girault, Alain

    A Hybrid Controller for Autonomous Vehicles Driving on Automated Highways Alain Girault a aInria Rh of the hybrid control of autonomous vehicles driving on automated highways. Vehicles are autonomous, so they do not commu- nicate with each other nor with the infrastructure. Two problems have to be dealt with: a vehicle

  9. Blood Drive Coordinator Packet Massachusetts General Hospital pg.2

    E-Print Network [OSTI]

    Mootha, Vamsi K.

    1 Blood Drive Coordinator Packet Massachusetts General Hospital pg.2 The MGH Bloodmobile pg.3 Facts about Blood Donation pg.4 Spreading the Word pg.5 Frequently Asked Questions and Tips pg.7 Schedule a Blood Drive pg.10 Eligibility Guidelines pg.11 #12;2 Massachusetts General Hospital

  10. EFFICIENCY AND SCALING OF CURRENT DRIVE AND REFUELLING

    E-Print Network [OSTI]

    Brown, Michael R.

    EFFICIENCY AND SCALING OF CURRENT DRIVE AND REFUELLING BY SPHEROMAK INJEXTIQN INTO A TOKAMAK M ABSTRACT. The first measurements of current drive (refluxing) and refuelling by spheromak injection injection, and refuelling is attributed to the rapid incorporation of the dense spheromak plasma

  11. Model Based Vehicle Tracking for Autonomous Driving in Urban Environments

    E-Print Network [OSTI]

    Model Based Vehicle Tracking for Autonomous Driving in Urban Environments Anna Petrovskaya environments. This paper describes moving vehicle tracking module that we developed for our autonomous driving in this area. DARPA has organized a series of competitions for autonomous vehicles. In 2005, autonomous

  12. Resonant driving and ksymmetry Jeroen S.W. Lamb \\Lambda

    E-Print Network [OSTI]

    Lamb, Jeroen

    Resonant driving and k­symmetry Jeroen S.W. Lamb \\Lambda Institute for Theoretical Physics--60 PACS: 0545,0220 Abstract A particular type of `resonant' periodic driving of a symmetric dynamical of the kth iterate of L, then U is called a (reversing) k­symmetry of L [9]. Along the same lines, a group

  13. Working on new gas turbine cycle for heat pump drive

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    Working on new gas turbine cycle for heat pump drive FILE COPY TAP By Irwin Stambler, Field Editor DO NOT 16 0 REMOVE 16 Small recuperated gas turbine engine, design rated at 13 hp and 27% efficiency of the cycle- as a heat pump drive for commercial installations. Company is testing prototype gas turbine

  14. A Driving Simulator for Teaching Embedded Automotive Control Applications

    E-Print Network [OSTI]

    Gillespie, Brent

    A Driving Simulator for Teaching Embedded Automotive Control Applications Paul G. Griffiths component uses a typical automotive power- train micro-controller and teaches topics in system dynamics students build a fixed-based driving simulator to test advanced automotive control system designs

  15. Tape-Drive Based Plasma Mirror

    SciTech Connect (OSTI)

    Sokollik, Thomas; Shiraishi, Satomi; Osterhoff, Jens; Evans, Eugene; Gonsalves, Anthony; Nakamura, Kei; vanTilborg, Jeroen; Lin, Chen; Toth, Csaba; Leemans, Wim

    2011-07-22T23:59:59.000Z

    We present experimental results on a tape-drive based plasma mirror which could be used for a compact coupling of a laser beam into a staged laser driven electron accelerator. This novel kind of plasma mirror is suitable for high repetition rates and for high number of laser shots. In order to design a compact, staged laser plasma based accelerator or collider [1], the coupling of the laser beam into the different stages represents one of the key issues. To limit the spatial foot print and thus to realize a high overall acceleration gradient, a concept has to be found which realizes this in-coupling within a few centimeters (cf. Fig 1). The fluence of the laser pulse several centimeters away from the acceleration stage (focus) exceeds the damage threshold of any available mirror coating. Therefore, in reference [2] a plasma mirror was suggested for this purpose. We present experiments on a tape-drive based plasma mirror which could be used to reflect the focused laser beam into the acceleration stage. Plasma mirrors composed of antireflection coated glass substrates are usually used to improve the temporal laser contrast of laser pulses by several orders of magnitudes [3,4]. This is particularly important for laser interaction with solid matter, such as ion acceleration [5,6] and high harmonic generation on surfaces [7]. Therefore, the laser pulse is weekly focused onto a substrate. The main pulse generates a plasma and is reflected at the critical surface, whereas the low intensity pre-pulse (mainly the Amplified Spontaneous Emission pedestal) will be transmitted through the substrate before the mirror has been triggered. Several publications [3,4] demonstrate a conservation of the spatial beam quality and a reflectivity of about 70 %. The drawback of this technique is the limited repetition rate since for every shot a fresh surface has to be provided. In the past years several novel approaches for high repetition rate plasma mirrors have been developed [2, 8]. Nevertheless, for the staged accelerator scheme a second important requirement has to be considered. Since the electron beam has to propagate through the mirror, the thickness of the substrate has to be as thin as possible to reduce the distortion of the electron beam. A tape of only several micrometer thickness can overcome these disadvantages. It can be used with a sufficient repetition rate while it allows the electron beam to propagate through with a minimum of scattering.

  16. Envelope: estimation of bottleneck and available bandwidth over multiple congested links

    E-Print Network [OSTI]

    Bhati, Amit

    2006-04-12T23:59:59.000Z

    burst- size n. : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 55 28 Relative error ~ in bottleneck and available bandwidth estimation with increasing probe-tra?c packet-size qp and CBR cross-tra?c. : : 56 29 Relative error... ~ in bottleneck and available bandwidth estimation with increasing probe-tra?c packet-size qp and TCP cross-tra?c. : : 57 30 A probe-burst [P1;P2;:::;Pn] of n packets enveloped by two small packets [Ei;Ei?1] at router Rk...

  17. Advanced insulated gate bipolar transistor gate drive

    DOE Patents [OSTI]

    Short, James Evans (Monongahela, PA); West, Shawn Michael (West Mifflin, PA); Fabean, Robert J. (Donora, PA)

    2009-08-04T23:59:59.000Z

    A gate drive for an insulated gate bipolar transistor (IGBT) includes a control and protection module coupled to a collector terminal of the IGBT, an optical communications module coupled to the control and protection module, a power supply module coupled to the control and protection module and an output power stage module with inputs coupled to the power supply module and the control and protection module, and outputs coupled to a gate terminal and an emitter terminal of the IGBT. The optical communications module is configured to send control signals to the control and protection module. The power supply module is configured to distribute inputted power to the control and protection module. The control and protection module outputs on/off, soft turn-off and/or soft turn-on signals to the output power stage module, which, in turn, supplies a current based on the signal(s) from the control and protection module for charging or discharging an input capacitance of the IGBT.

  18. Base drive and overlap protection circuit

    DOE Patents [OSTI]

    Gritter, David J. (Southfield, MI)

    1983-01-01T23:59:59.000Z

    An inverter (34) which provides power to an A. C. machine (28) is controlled by a circuit (36) employing PWM control strategy whereby A. C. power is supplied to the machine at a preselectable frequency and preselectable voltage. This is accomplished by the technique of waveform notching in which the shapes of the notches are varied to determine the average energy content of the overall waveform. Through this arrangement, the operational efficiency of the A. C. machine is optimized. The control circuit includes a microcomputer and memory element which receive various parametric inputs and calculate optimized machine control data signals therefrom. The control data is asynchronously loaded into the inverter through an intermediate buffer (38). A base drive and overlap protection circuit is included to insure that both transistors of a complimentary pair are not conducting at the same time. In its preferred embodiment, the present invention is incorporated within an electric vehicle (10) employing a 144 VDC battery pack (32) and a three-phase induction motor (18).

  19. Hybrid-drive implosion system for ICF targets

    DOE Patents [OSTI]

    Mark, J.W.K.

    1987-10-14T23:59:59.000Z

    Hybrid-drive implosion systems for ICF targets are described which permit a significant increase in target gain at fixed total driver energy. The ICF target is compressed in two phases, an initial compression phase and a final peak power phase, with each phase driven by a separate, optimized driver. The targets comprise a hollow spherical ablator surroundingly disposed around fusion fuel. The ablator is first compressed to higher density by a laser system, or by an ion beam system, that in each case is optimized for this initial phase of compression of the target. Then, following compression of the ablator, energy is directly delivered into the compressed ablator by an ion beam driver system that is optimized for this second phase of operation of the target. The fusion fuel is driven, at high gain, to conditions wherein fusion reactions occur. This phase separation allows hydrodynamic efficiency and energy deposition uniformity to be individually optimized, thereby securing significant advantages in energy gain. In additional embodiments, the same or separate drivers supply energy for ICF target implosion. 3 figs.

  20. Hybrid-drive implosion system for ICF targets

    DOE Patents [OSTI]

    Mark, James W. (Danville, CA)

    1988-01-01T23:59:59.000Z

    Hybrid-drive implosion systems (20,40) for ICF targets (10,22,42) are described which permit a significant increase in target gain at fixed total driver energy. The ICF target is compressed in two phases, an initial compression phase and a final peak power phase, with each phase driven by a separate, optimized driver. The targets comprise a hollow spherical ablator (12) surroundingly disposed around fusion fuel (14). The ablator is first compressed to higher density by a laser system (24), or by an ion beam system (44), that in each case is optimized for this initial phase of compression of the target. Then, following compression of the ablator, energy is directly delivered into the compressed ablator by an ion beam driver system (30,48) that is optimized for this second phase of operation of the target. The fusion fuel (14) is driven, at high gain, to conditions wherein fusion reactions occur. This phase separation allows hydrodynamic efficiency and energy deposition uniformity to be individually optimized, thereby securing significant advantages in energy gain. In additional embodiments, the same or separate drivers supply energy for ICF target implosion.

  1. Turbine Drive Gas Generator for Zero Emission Power Plants

    SciTech Connect (OSTI)

    Doyle, Stephen E.; Anderson, Roger E.

    2001-11-06T23:59:59.000Z

    The Vision 21 Program seeks technology development that can reduce energy costs, reduce or eliminate atmospheric pollutants from power plants, provide choices of alternative fuels, and increase the efficiency of generating systems. Clean Energy Systems is developing a gas generator to replace the traditional boiler in steam driven power systems. The gas generator offers the prospects of lower electrical costs, pollution free plant operations, choices of alternative fuels, and eventual net plant efficiencies in excess of 60% with sequestration of carbon dioxide. The technology underlying the gas generator has been developed in the aerospace industry over the past 30 years and is mature in aerospace applications, but it is as yet unused in the power industry. This project modifies and repackages aerospace gas generator technology for power generation applications. The purposes of this project are: (1) design a 10 MW gas generator and ancillary hardware, (2) fabricate the gas generator and supporting equipment, (3) test the gas generator using methane as fuel, (4) submit a final report describing the project and test results. The principal test objectives are: (1) define start-up, shut down and post shutdown control sequences for safe, efficient operation; (2) demonstrate the production of turbine drive gas comprising steam and carbon dioxide in the temperature range 1500 F to 3000 F, at a nominal pressure of 1500 psia; (3) measure and verify the constituents of the drive gas; and (4) examine the critical hardware components for indications of life limitations. The 21 month program is in its 13th month. Design work is completed and fabrication is in process. The gas generator igniter is a torch igniter with sparkplug, which is currently under-going hot fire testing. Fabrication of the injector and body of the gas generator is expected to be completed by year-end, and testing of the full gas generator will begin in early 2002. Several months of testing are anticipated. When demonstrated, this gas generator will be the prototype for use in demonstration power plants planned to be built in Antioch, California and in southern California during 2002. In these plants the gas generator will demonstrate durability and its operational RAM characteristics. In 2003, it is expected that the gas generator will be employed in new operating plants primarily in clean air non-attainment areas, and in possible locations to provide large quantities of high quality carbon dioxide for use in enhanced oil recovery or coal bed methane recovery. Coupled with an emission free coal gasification system, the CES gas generator would enable the operation of high efficiency, non-polluting coal-fueled power plants.

  2. Congestion in a competitive world: a study of the impact of competition on airline operations

    E-Print Network [OSTI]

    Bierlaire, Michel

    impacts: first of all, the airlines' operational cost increase is estimated by JEC to $19 billion is a fast developing area. Airlines compete for a limited resource, namely airport capacity. The consequence as well as for many other. The airline business has, as the energy supply or the health care, a capital

  3. Base drive circuit for a four-terminal power Darlington

    DOE Patents [OSTI]

    Lee, Fred C. (Blacksburg, VA); Carter, Roy A. (Salem, VA)

    1983-01-01T23:59:59.000Z

    A high power switching circuit which utilizes a four-terminal Darlington transistor block to improve switching speed, particularly in rapid turn-off. Two independent reverse drive currents are utilized during turn off in order to expel the minority carriers of the Darlington pair at their own charge sweep-out rate. The reverse drive current may be provided by a current transformer, the secondary of which is tapped to the base terminal of the power stage of the Darlington block. In one application, the switching circuit is used in each power switching element in a chopper-inverter drive of an electric vehicle propulsion system.

  4. Microsoft PowerPoint - 06 Crawley Drive for Net Zero Energy Commercial...

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

    6 Crawley Drive for Net Zero Energy Commercial Buildings Microsoft PowerPoint - 06 Crawley Drive for Net Zero Energy Commercial Buildings Microsoft PowerPoint - 06 Crawley Drive...

  5. Development and Verification of a Truck Driving Simulator for Driver Drowsiness Studies

    E-Print Network [OSTI]

    Vertes, Akos

    environment. The control of simulation conditions in a driving simulator allows independent study of driving) and the Modeling, Simulation and Driving Simulators (MSIS) research unit of the French National Institute Steering torque feedback

  6. Best Practices for Energy Efficient Cleanrooms Efficient HVAC Systems: Variable-Speed-Drive Chillers

    E-Print Network [OSTI]

    -Speed-Drive Chillers Tengfang Xu June 15, 2005 The project is funded by the California Energy Commission's Industrial Efficient Cleanrooms Efficient HVAC Water Systems: Variable-Speed-Drive Chillers Tengfang Xu Contents HVAC.............................................................................................. 2 Variable-Speed-Drive Chillers

  7. Algal Biofuels: Long-Term Energy Benefits Drive U.S. Research...

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

    Biofuels: Long-Term Energy Benefits Drive U.S. Research Algal Biofuels: Long-Term Energy Benefits Drive U.S. Research Algal Biofuels: Long-Term Energy Benefits Drive U.S. Research...

  8. Pallets of PV: Communities Purchase Solar and Drive Down Costs...

    Open Energy Info (EERE)

    Pallets of PV: Communities Purchase Solar and Drive Down Costs Together Home > Groups > OpenEI Community Central Graham7781's picture Submitted by Graham7781(2017) Super...

  9. adjustable electric drives: Topics by E-print Network

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

    Ogden, Joan M. 2009-01-01 48 220,000-rmin, 2-kW Permanent Magnet Motor Drive for Turbocharger Toshihiko Noguchi, Yosuke Takata * Engineering Websites Summary: -combustion...

  10. adjustable electric drive: Topics by E-print Network

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

    Ogden, Joan M. 2009-01-01 48 220,000-rmin, 2-kW Permanent Magnet Motor Drive for Turbocharger Toshihiko Noguchi, Yosuke Takata * Engineering Websites Summary: -combustion...

  11. Strain based preload measurement in drive axle pinion bearings

    E-Print Network [OSTI]

    Thomas, Anthony H., 1981-

    2005-01-01T23:59:59.000Z

    Bearing setting has a significant impact on bearing life and system performance. A strain based load measurement technique that has been previously developed and patented will be used to measure preload in automotive drive ...

  12. Drive-access transit : a regional analytical framework

    E-Print Network [OSTI]

    Sorensen, James B

    2005-01-01T23:59:59.000Z

    A framework for analyzing drive-access transit at a regional level is developed in this research. This framework is intended primarily for in-house use by regional transit agencies, yet has implications for the regional ...

  13. Driving tissue morphogenetic cascades using tunable nanolayered surface coatings

    E-Print Network [OSTI]

    Shah, Nisarg Jaydeep

    2014-01-01T23:59:59.000Z

    Harnessing the synergy between materials at the nanoscale can be a valuable tool in understanding and probing cellular phenomena and in driving specific processes that lead to tissue and organ regeneration and repair. ...

  14. Magnetically suspended reaction sphere with one-axis hysteresis drive

    E-Print Network [OSTI]

    Zhou, Lei., S.M. Massachusetts Institute of Technology

    2014-01-01T23:59:59.000Z

    This thesis presents the design, modeling, implementation, and control of a magnetically suspended reaction sphere with one-axis hysteresis drive (1D-MSRS). The goal of this project is two fold: (a) exploring the design ...

  15. Variable Frequency Motor Drives: Harmonics, Power Factor, and Energy Efficiency

    E-Print Network [OSTI]

    Massey, G. W.

    Variable frequency motor drives (VFD's) have been on the market for many years. Early versions were unreliable and prone to failure. Relatively recent developments in Pulse-Width Modulated (PWM) waveform technology have improved VFD reliability...

  16. Design of a triple singularity drive for mobile wheeled robots

    E-Print Network [OSTI]

    Carothers, Jeffrey (Jeffrey W.)

    2014-01-01T23:59:59.000Z

    This thesis encompasses the development of a mobile robotic platform using three singularity drive modules. The process begins with a review of other omnidirectional platforms, comparing and contrasting their strengths and ...

  17. High efficiency pulse motor drive for robotic propulsion

    E-Print Network [OSTI]

    Sun, Zhen, M.S. Massachusetts Institute of Technology

    2013-01-01T23:59:59.000Z

    The goal of this research is to improve the power efficiency of robotic locomotion through the use of series elastic actuation, with a focus on swimming motion. To achieve high efficiency, electromechanical drives need to ...

  18. A cloud-assisted design for autonomous driving

    E-Print Network [OSTI]

    Suresh Kumar, Swarun

    This paper presents Carcel, a cloud-assisted system for autonomous driving. Carcel enables the cloud to have access to sensor data from autonomous vehicles as well as the roadside infrastructure. The cloud assists autonomous ...

  19. Energy Department Announces $19 Million to Drive Down Solar Soft...

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

    broader SunShot Initiative investments that are driving down the cost of solar and making solar affordable for more American families and companies. Since the beginning of 2010,...

  20. Innovation incentives and competition in the hard disk drive industry

    E-Print Network [OSTI]

    Wu, Xiaohua Sherry

    2011-01-01T23:59:59.000Z

    Firms in the hard disk drive industry are continually engaging in R & D and improving the quality of their products. We explore various determinants of the product innovation incentives for firms concerned with both their ...

  1. Series Input Modular Architecture for Driving Multiple LEDs

    E-Print Network [OSTI]

    , where each cell drives four 700 mA LEDs. Keywords ­ solid-state lighting, light emitting diodes, LED have been achieved over the past decade in solid state light emitting diodes (LEDs), leading to high

  2. A Study of Adjustable Speed Drive Applications for Pumps

    E-Print Network [OSTI]

    Triezenberg, D. M.; Lakhavani, S. T.

    1983-01-01T23:59:59.000Z

    A STUDY OF ADJUSTABLE SPEED DRIVE APPLICATIONS FOR PUMPS D. M. Triezenberg and S. T. Lakhavani Westinghouse R&D Center Pittsburgh, Pennsylvania ABSTRACT We have undertaken a survey and analysis of potential ASD applications for pumps in U...

  3. Electron Bernstein wave current drive modeling in toroidal plasma confinement

    E-Print Network [OSTI]

    Decker, Joan, 1977-

    2005-01-01T23:59:59.000Z

    The steady-state confinement of tokamak plasmas in a fusion reactor requires non-inductively driven toroidal currents. Radio frequency waves in the electron cyclotron (EC) range of frequencies can drive localized currents ...

  4. Electric Drive Component Manufacturing: Magna E-Car Systems of...

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

    Magna E-Car Systems of America, Inc. Electric Drive Component Manufacturing: Magna E-Car Systems of America, Inc. ATP-LD; Cummins Next Generation Tier 2 Bin 2 Diesel Engine...

  5. U.S. First Responder Safety Training for Advanced Electric Drive...

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

    U.S. First Responder Safety Training for Advanced Electric Drive Vehicle Presentation U.S. First Responder Safety Training for Advanced Electric Drive Vehicle Presentation 2010 DOE...

  6. SunLine Test Drives Hydrogen Bus: Hydrogen Fuel Cell & Infrastructure...

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

    Test Drives Hydrogen Bus: Hydrogen Fuel Cell & Infrastructure Technologies Program, Fuel Cell Bus Demonstration Projects Fact Sheet. SunLine Test Drives Hydrogen Bus: Hydrogen Fuel...

  7. Fast wave current drive: Experimental status and reactor prospects

    SciTech Connect (OSTI)

    Ehst, D.A.

    1988-03-01T23:59:59.000Z

    The fast wave is one of the two possible wave polarizations which propagate according to the basic theory of cold plasmas. It is distinguished from the other (slow wave) branch by having an electric field vector which is mainly orthogonal to the confining magnetic field of the plasma. The plasma and fast wave qualitatively assume different behavior depending on the frequency range of the launched wave. The high frequency fast wave (HFFW), with a frequency (..omega..2..pi.. )approximately) GHz) much higher than the ion cyclotron frequency (..cap omega../sub i/), suffers electron Landau damping and drives current by supplying parallel momentum to superthermal electrons in a fashion similar to lower hybrid (slow wave) current drive. In the simple theory the HFFW should be superior to the slow wave and can propagate to very high density and temperature without impediment. Experiments, however, have not conclusively shown that HFFW current drive can be achieved at densities above the slow wave current drive limit, possibly due to conversion of the launched fast waves into slow waves by density fluctuations. Alternatively, the low frequency fast wave (LFFW), with frequencies ()approxreverse arrowlt) 100 MHz) only a few times the ion cyclotron frequency, is damped by electron Landau damping and, in a hot plasma ()approxreverse arrowgt) 10 keV), by electron transit time magnetic pumping; current drive is achieved by pushing superthermal electrons, and efficiency is prediocted to be slightly better than for lower hybrid current drive. Most significantly, the slow wave does not propagate in high density plasma when ..omega.. )approximately) ..cap omega../sub i/, so parasitic coupling to the slow wave can be avoided, and no density and temperture limitations are foreseen. Experiments with fast wve current drive invariably find current drive efficiency as good as obtained in lower hybrid experiments at comparable, low temperatures. 45 refs., 4 figs., 1 tab

  8. Adjustable Speed AC Motor Drives-Applications Problems

    E-Print Network [OSTI]

    Enjeti, P.

    Adjustable Speed AC Motor Drives Applications Problems by Dr. P. Enjeti Power Quality Laboratory Department ofElectrical Engineering Texas A&M University College Station, TX 77843 Tel: 409-845-7466 Fax: 409-845-6259 Email..., it generates side effects, some which have been recognized only recently. This paper presents a comprehensive coverage of application issues of PWM inverter controlled ac motor drives which include damage to motor insulation due to reflected voltages caused...

  9. Unwinding the Spin on Variable Speed Drive Air Compressors

    E-Print Network [OSTI]

    Beals, C. E.

    2006-01-01T23:59:59.000Z

    Unwinding the Spin on Variable Speed Drive Air Compressors By Chris E. Beals, President, Air System Management, Inc Over the past several years, the variable speed drive (VSD) compressor has become a frequent choice for new compressor... purchases. The VSD compressor’s popularity is partly due to rising energy prices and its efficiency as a trim compressor. Unfortunately, much of the VSD compressor’s popularity is a result of spin applied by the marketers. For example, sales...

  10. Validity and limitations of gas-drive relative permeability measurement

    E-Print Network [OSTI]

    Gupta, Anand Kumar

    1971-01-01T23:59:59.000Z

    VALIDITY AND LIMITATIONS OF GAS-DRIVE RELA TI VE PERMEABILITY MEASUREMEN T A Thesis by ANAND KUMAR GUPTA Submitted to the Graduate College of Texas ARM University in partial fulfillxnent of the requirement for the degree of MASTER Ok SCIENCE... August, 1971 Major Subject: Petroleum Engineering VALIDITY AND LIMITATIONS OF GAS-DRIVE RELATIVE PERMEABILITY MEASUREMENT A Thesis by ANAND KUMAR GUPTA Approved as to style and content by: ( airman of Committee) ber) Head of Department) (Member...

  11. Strong mechanical driving of a single electron spin

    E-Print Network [OSTI]

    Arne Barfuss; Jean Teissier; Elke Neu; Andreas Nunnenkamp; Patrick Maletinsky

    2015-03-23T23:59:59.000Z

    Quantum devices for sensing and computing applications require coherent quantum systems which can be manipulated in a fast and robust way. Such quantum control is typically achieved using external electric or magnetic fields which drive the system's orbital or spin degrees of freedom. However, most of these approaches require complex and unwieldy antenna or gate structures, and with few exceptions are limited to the regime of weak driving. Here, we present a novel approach to strongly and coherently drive a single electron spin in the solid state using internal strain fields in an integrated quantum device. Specifically, we study individual Nitrogen-Vacancy (NV) spins embedded in diamond mechanical oscillators and exploit the intrinsic strain coupling between spin and oscillator to strongly drive the spins. As hallmarks of the strong driving regime, we directly observe the energy spectrum of the emerging phonon-dressed states and employ our strong, continuous driving for enhancement of the NV spin coherence time. Our results constitute a first step towards strain-driven, integrated quantum devices and open new perspectives to investigate unexplored regimes of strongly driven multi-level systems and to study exotic spin dynamics in hybrid spin-oscillator devices.

  12. Driving confidence and in-vehicle telematics : a study of technology adoption patterns of the 50+ driving population

    E-Print Network [OSTI]

    Hutchinson, Thomas E. (Thomas Ely), 1979-

    2004-01-01T23:59:59.000Z

    In-vehicle telematics is a term that encompasses a wide range of technologies, which aid the driving function through features assisting in safety and service tasks. These technologies are designed to give the operator and ...

  13. Work performed by a Classical-"reversible"-Carnot cycle Raising's distribution for the small "driving weights"

    E-Print Network [OSTI]

    Liberto, F

    2000-01-01T23:59:59.000Z

    The expansions or the compressions of the ideal gas in the quasi-static Carnot cycle, can be performed (on adiabatic or isothermal way) by slowly increasing or decreasing the external pressure by means of small weights acting on the piston of the vessel containing the gas. We call them shortly the ``driving weights'' (dw). Let N be their number, a large one. To determine the work performed by the ideal gas in the cycle the ``driving weights'' must be handled carefully. If we let them move on-off the piston only horizontally, their vertical motions will be due only to the gas. Here we show that, at the end, while some of them will have moved down (will have negative raising) the remaining ones (the majority) will have moved up (will have positive raising) so that the total work performed by the ideal gas equals the total variation of the gravitational potential energy of the ``driving weghts''. The cycle is performed in 2N time-steps. For each step t_i, with i in 1,..,2N, we give H(t_i), and DH(t_{i-1},t_i), r...

  14. Comparative Assessment of Direct Drive High Temperature Superconducting Generators in Multi-Megawatt Class Wind Turbines

    SciTech Connect (OSTI)

    Maples, B.; Hand, M.; Musial, W.

    2010-10-01T23:59:59.000Z

    This paper summarizes the work completed under the CRADA between NREL and American Superconductor (AMSC). The CRADA combined NREL and AMSC resources to benchmark high temperature superconducting direct drive (HTSDD) generator technology by integrating the technologies into a conceptual wind turbine design, and comparing the design to geared drive and permanent magnet direct drive (PMDD) wind turbine configurations. Analysis was accomplished by upgrading the NREL Wind Turbine Design Cost and Scaling Model to represent geared and PMDD turbines at machine ratings up to 10 MW and then comparing cost and mass figures of AMSC's HTSDD wind turbine designs to theoretical geared and PMDD turbine designs at 3.1, 6, and 10 MW sizes. Based on the cost and performance data supplied by AMSC, HTSDD technology has good potential to compete successfully as an alternative technology to PMDD and geared technology turbines in the multi megawatt classes. In addition, data suggests the economics of HTSDD turbines improve with increasing size, although several uncertainties remain for all machines in the 6 to 10 MW class.

  15. Lower hybrid current drive favoured by electron cyclotron radiofrequency heating

    SciTech Connect (OSTI)

    Cesario, R.; Cardinali, A.; Castaldo, C.; Marinucci, M.; Tuccillo, A. A. [Associazione EURATOM/ENEA sulla Fusione, Centro Ricerche Frascati, 00044, Frascati (Italy); Amicucci, L.; Galli, A. [Università di Roma Sapienza, Dipartimento Ingegneria Elettronica, Rome (Italy); Giruzzi, G. [CEA, IRFM, F-13108 Saint-Paul-lez-Durance (France); Napoli, F.; Schettini, G. [Università di Roma Tre, Dipartimento Ingegneria Elettronica, Rome (Italy)

    2014-02-12T23:59:59.000Z

    The important goal of adding to the bootstrap a fraction of non-inductive plasma current, which would be controlled for obtaining and optimizing steady-state profiles, can be reached by using the Current Drive produced by Lower Hybrid waves (LHCD). FTU (Frascati Tokamak Upgrade) experiments demonstrated, indeed, that LHCD is effective at reactor-graded high plasma density, and the LH spectral broadening is reduced, operating with higher electron temperature in the outer region of plasma column (T{sub e-periphery}). This method was obtained following the guidelines of theoretical predictions indicating that the broadening of launched spectrum produced by parametric instability (PI) should be reduced, and the LHCD effect at high density consequently enabled, under higher (T{sub e-periphery}). In FTU, the temperature increase in the outer plasma region was obtained by operating with reduced particle recycling, lithized walls and deep gas fuelling by means of fast pellet. Heating plasma periphery with electron cyclotron resonant waves (ECRH) will provide a further tool for achieving steady-state operations. New FTU experimental results are presented here, demonstrating that temperature effect at the plasma periphery, affecting LH penetration, occurs in a range of plasma parameters broader than in previous work. New information is also shown on the modelling assessing frequencies and growth rates of the PI coupled modes responsible of spectral broadening. Finally, we present the design of an experiment scheduled on FTU next campaign, where ECRH power is used to slightly increase the electron temperature in the outer plasma region of a high-density discharge aiming at restoring LHCD. Consequent to model results, by operating with a toroidal magnetic field of 6.3 T, useful for locating the electron cyclotron resonant layer at the periphery of the plasma column (r/a?0.8, f{sub 0}=144 GHz), an increase of T{sub e} in the outer plasma (from 40 eV to 80 eV at r/a?0.8) is expected by the JETTO code, sufficient for recovering LHCD. An ECRH power of 0.8 MW, and the standard FTU regime at high plasma density (n{sub eav}?1.3×10{sup 20}m{sup ?3} and plasma current of 0.5 MA) have been considered. The code has been set with transport modelling to reproduce the evolution of FTU kinetic profiles.

  16. Increased

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

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

  17. Adjustable speed drives: Applications and R&D needs

    SciTech Connect (OSTI)

    Stefanovic, V.R.

    1995-09-01T23:59:59.000Z

    The largest opportunity for the growth of adjustable speed drives (ASDs) during the next 5-6 years is in pump, fan and compressor (PFC) applications where a constant, fixed speed operation is converted to adjustable speed in order to realize energy savings. Inverter supplied induction motors are and will continue to be predominately used in these applications. Over the long term (10-15 years), the greatest ASD growth is expected in large volume consumer applications: first in hybrid electric vehicles (EVs) and in residential heating, ventilation and air-conditioning (HVAC). Both induction and a variety of AC Permanent Magnet motors are expected to be the dominant technology in this new field. The traditional ASD applications in industries which require adjustable speed (such as machine tools, robotics, steel rolling, extruders, paper mill finishing lines, etc.) offer a relatively limited potential for above average ASD growth since most of these applications have already converted to electronic speed control. As a result, ASD growth in this sector will essentially track the growth of the corresponding industries. If realized, both short and long term ASD growth opportunities will result in significant advancements of ASD technology, which will then substantially affect all other, more fragmented, ASD applications. In fact, any single large volume ASD application will serve as a catalyst for improving ASD characteristics in all other ASD applications with the same voltage rating. ASD cost and reliability (defined in the context of application compatibility) are the two most important factors which will determine whether the ASD growth opportunities are realized. Conversely, any technological improvement which carries a cost increase will be restricted to niche applications, at best. Consequently, future R & D efforts should be directed to secure reduction in ASD cost and improvement in ASD reliability. A specific action plan is outlined in this report.

  18. Increased efficiency of topping cycle PCFB power plants

    SciTech Connect (OSTI)

    Robertson, A.; Domeracki, W.; Horazak, D. [and others

    1996-05-01T23:59:59.000Z

    Pressurized circulating fluidized bed (PCFB) power plants offer the power industry significantly increased efficiencies with reduced costs of electricity and lower emissions. When topping combustion is incorporated in the plant, these advantages are enhanced. In the plant, coal is fed to a pressurized carbonizer that produces a low-Btu fuel gas and char. After passing through a cyclone and ceramic barrier filter to remove gas-entrained particulates and a packed bed of emathelite pellets to remove alkali vapors. the fuel gas is burned in a topping combustor to produce the energy required to drive a gas turbine. The gas turbine drives a generator combustor, and a fluidized bed heat exchanger (FBHE). The carbonizer char is burned in the PCFB and the exhaust gas passes through its own cyclone, ceramic barrier filter, and alkali getter and supports combustion of the fuel gas in the topping combustor. Steam generated in a heat-recovery steam generator (HRSG) downstream of the gas turbine and in the FBHE associated with the PCFB drives the steam turbine generator that furnishes the balance of electric power delivered by the plant.

  19. Initial Low Recycling Improving Confinement and Current Drive in Advanced Tokamak (AT) and Hybrid Scenarios

    E-Print Network [OSTI]

    Initial Low Recycling Improving Confinement and Current Drive in Advanced Tokamak (AT) and Hybrid Scenarios

  20. Designing Effective Incentives to Drive Residential Retrofit Program Participation (Text Version)

    Broader source: Energy.gov [DOE]

    Transcript of the webinar, "Designing Effective Incentives to Drive Residential Retrofit Program Participation."

  1. Computer-Aided Engineering for Electric Drive Vehicle Batteries (CAEBAT) (Presentation)

    SciTech Connect (OSTI)

    Pesaran, A. A.

    2011-05-01T23:59:59.000Z

    This presentation describes NREL's computer aided engineering program for electric drive vehicle batteries.

  2. Overview of Transport, Fast Particle and Heating and Current Drive Physics using Tritium in JET plasmas

    E-Print Network [OSTI]

    Overview of Transport, Fast Particle and Heating and Current Drive Physics using Tritium in JET plasmas

  3. Overview of Transport, Fast Particle and Heating and Current Drive Physics using Tritium in JET Plasmas

    E-Print Network [OSTI]

    Overview of Transport, Fast Particle and Heating and Current Drive Physics using Tritium in JET Plasmas

  4. Cancellation of TorqueRipple Due to Nonidealitiesof PermanentMagnet SynchronousMachine Drives

    E-Print Network [OSTI]

    Chapman, Patrick

    -magnet synchronous application than the predecessors. Further, the technique is machine (PMSM) drives dictates

  5. Simulation of Phase Stability at the Flat Top of the CLIC Drive Beam

    E-Print Network [OSTI]

    Gerbershagen, A; Burrows, P

    2011-01-01T23:59:59.000Z

    The drive beam phase stability is one of the critical issues of the Compact Linear Collider (CLIC). In this paper the generation and propagation of drive beam phase errors is studied for effects that vary during the drive beam pulse. This includes the influence of drive beam current and phase errors as well as of drive beam accelerator RF phase and amplitude errors on the drive beam phase after the compressor chicanes and the analysis of the propagation of these errors through the drive beam combination scheme. The impact of the imperfections on the main beam is studied including the possible correction with help of a feedforward system.

  6. The Wavedriver integrated drive and charger system for electric buses

    SciTech Connect (OSTI)

    Shemmans, D.J.; Green, R.M. [Wavedriver Ltd. (United Kingdom)

    1994-12-31T23:59:59.000Z

    Electric propulsion presents a realistic economic alternative to hydro-carbon fuelled passenger transport. Progress continues to reduce the major cost element - the battery - but other expensive systems, on-board and off-board, are still needed for an electric bus to function. The power conversion systems can be improved considerably, and this paper describes the Wavedriver combined field oriented AC motor drive and high rate charger. The field-oriented control gives high performance as a traction drive, and similar vector control strategies are used for the charging processes; advanced fabrication methods realise low costs. By using the drive system components for charging, the off-board electrical infrastructure components are extremely simple and cost-effective, meaning that opportunistic recharging at convenient locations around a route is feasible. This means that the on-board battery can be optimally sized, without restricting the service range, while reducing capital costs. 4 refs.

  7. Electric machine and current source inverter drive system

    DOE Patents [OSTI]

    Hsu, John S

    2014-06-24T23:59:59.000Z

    A drive system includes an electric machine and a current source inverter (CSI). This integration of an electric machine and an inverter uses the machine's field excitation coil for not only flux generation in the machine but also for the CSI inductor. This integration of the two technologies, namely the U machine motor and the CSI, opens a new chapter for the component function integration instead of the traditional integration by simply placing separate machine and inverter components in the same housing. Elimination of the CSI inductor adds to the CSI volumetric reduction of the capacitors and the elimination of PMs for the motor further improve the drive system cost, weight, and volume.

  8. Driving Biofuels End Use: BETO/VTO Collaborations

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny:Revised Finding of No53197E TDrew Bittner About Us Drew Bittner -DriveDriving

  9. Recent progress on lower hybrid current drive and implications for ITER

    E-Print Network [OSTI]

    Hillairet, Julien; Goniche, M; Achard, J; Armitano, A; Beckett, B; Belo, J; Berger-By, G; Corbel, E; Delpech, L; Decker, J; Dumont, R; Guilhem, D; Kazarian, F; Litaudon, X; Magne, R; Marfisi, L; Mollard, P; Namkung, W; Nilsson, E; Park, S; Peysson, Y; Preynas, M; Sharma, P K; Prou, M

    2015-01-01T23:59:59.000Z

    The sustainment of steady-state plasmas in tokamaks requires efficient current drive systems. Lower Hybrid Current Drive (LHCD) is currently the most efficient method to generate a continuous additional off-axis toroidal plasma current as well as reduce the poloidal flux consumption during the plasma current ramp-up phase. The operation of the Tore Supra ITER-like LH launcher has demonstrated the capability to couple LH power at ITER-like power densities with very low reflected power during long pulses. In addition, the installation of eight 700kW/CW klystrons at the LH transmitter has allowed increasing the total LH power in long pulse scenarios. However, in order to achieve pure stationary LH sustained plasmas, some R\\&D are needed to increase the reliability of all the systems and codes, from the RF sources to the plasma scenario prediction. The CEA/IRFM is addressing some of these issues by leading a R\\&D program towards an ITER LH system and by the validation of an integrated LH modeling suite of...

  10. Physical model of a hybrid electric drive train

    E-Print Network [OSTI]

    Young, Brady W. (Brady William)

    2006-01-01T23:59:59.000Z

    A motor and flywheel system was designed to simulate the dynamics of the electric drive train and inertial mass of a hybrid electric vehicle. The model will serve as a test bed for students in 2.672 to study the energy ...

  11. The driving force of plate tectonics evaluated in spherical coordinates

    E-Print Network [OSTI]

    Donahue, John Michael

    1985-01-01T23:59:59.000Z

    &' + Ri according to the force balance equation of Garison et al (1983) . The age weighting for a ridge-push driving force model is only the age, t. 13 magnetic linea tio ns I subduction boundary force vector FIG. 4. Trench segmentation scheme. I...

  12. Driving Major Solar Flares and Eruptions: Carolus J. Schrijver

    E-Print Network [OSTI]

    Schrijver, Karel

    Driving Major Solar Flares and Eruptions: A Review Carolus J. Schrijver Lockheed Martin Adv. Techn that energize and trigger M- and X-class so- lar flares and associated flux-rope destabilizations. Numerical modeling of specific solar regions is hampered by uncertain coronal-field reconstructions and by poorly

  13. ENGINEERS' DAY 2011 ACTIVITIES 1800 Engineering Hall, 1415 Engineering Drive

    E-Print Network [OSTI]

    Sheridan, Jennifer

    ENGINEERS' DAY 2011 ACTIVITIES 1800 Engineering Hall, 1415 Engineering Drive 5:30 SOCIAL HOUR · Distinguished Achievement Awards · Early-Career Achievement Award · College of Engineering faculty and staff, Chair, E-Day Committee Department of Biomedical Engineering 8:50 COLLEGE UPDATE Dean Paul S. Peercy

  14. Driving Resource Management With ApplicationLevel Quality of Service

    E-Print Network [OSTI]

    Katchabaw, Michael James

    Driving Resource Management With Application­Level Quality of Service Specifications Michael J­driven approach to resource management to support quality of service. We present our general strategy, the design resource management. Appeared in Decision Support Systems Journal, Volume 28, Elsevier Science Press, 2000

  15. College of Communication & Information 1345 Circle Park Drive | Suite 302

    E-Print Network [OSTI]

    Grissino-Mayer, Henri D.

    College of Communication & Information 1345 Circle Park Drive | Suite 302 Knoxville, TN 37996 & Communication Studies (CICS) - Awarded grants total $7 million +, NSF, IMLS, Sloan Foundation and more - 2.5+ million in science information and communication contract work at Oak Ridge National Labs. · Hands

  16. A CASTOR WHEEL CONTROLLER FOR DIFFERENTIAL DRIVE WHEELCHAIRS

    E-Print Network [OSTI]

    Bremen, Universität

    on the front axis), and the tire material (rubber), the addi- tional force to change the angle of the castor by the equipped laser scanners and brakes in time if an obstacle is danger- ously close to the wheelchair. During for different grounds and tire materials, but without a projection of these forces to the differential drive

  17. Drive torque actuation in active surge control of centrifugal compressors

    E-Print Network [OSTI]

    Gravdahl, Jan Tommy

    Drive torque actuation in active surge control of centrifugal compressors Jan Tommy Gravdahl , Olav to active surge control is presented for a centrifugal compressor driven by an electrical motor. The main is considered to be the control input. The proposed method is simulated on a compressor model using

  18. Control of the Lamb shift by a driving field

    E-Print Network [OSTI]

    Yang, Shuai; Zheng, Hang; Hong, Ran; Zhu, Shi-Yao; Zubairy, M. Suhail

    2010-01-01T23:59:59.000Z

    A unitary transformation approach is used to study the energy level shift of the atom coupled to both a vacuum electromagnetic field and a driving laser. The Lamb shift of the energy levels is shown to depend on the Rabi frequency and the detuning...

  19. Driving Pattern Recognition for Control of Hybrid Electric Trucks

    E-Print Network [OSTI]

    Peng, Huei

    Driving Pattern Recognition for Control of Hybrid Electric Trucks CHAN-CHIAO LIN1 , SOONIL JEON2 strategy is to minimize fuel consumption and engine-out NOx and PM emissions on a set of diversified trucks. The 21st Century Truck program in the US, spearheaded by two government agencies, Department

  20. How to Avoid Overestimating Variable Speed Drive Savings

    E-Print Network [OSTI]

    Maxwell, J. B.

    2005-01-01T23:59:59.000Z

    in fan efficiency. 5. Account for decreases in motor efficiency at part load, particularly for smaller motors below about 35 percent load. 6. Recognize that existing part load controls may be more efficient than expected. 7. Account for drive losses. 8...

  1. Transport Research Arena Europe 2010, Brussels Towards Highly Automated Driving

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of HAVEit is to develop and investigate vehicle automation beyond ADAS systems, especially highly automated automated vehicles In 2010, two lines of research and development exist in the domain of ground vehicle automation: Either the automation is driving the vehicle fully automated without a human driver

  2. Progress in Direct-Drive Inertial Confinement Fusion

    SciTech Connect (OSTI)

    Meyerhofer,D.D.

    2004-12-17T23:59:59.000Z

    Recent progress in direct-drive inertial confinement fusion research at LLE using the 60-beam, 30-kJUV OMEGA laser system and cryogenic target capability to perform ignition-scaled implosions will be reported. In addition, a new high-energy (2.6-kJ) petawatt capability is currently under construction.

  3. Assistive listening devices drive neuroplasticity in children with dyslexia

    E-Print Network [OSTI]

    Assistive listening devices drive neuroplasticity in children with dyslexia Jane Hornickela Jolla, CA, and approved August 3, 2012 (received for review April 23, 2012) Children with dyslexia often on auditory neurophysiology and reading skills in children with dyslexia. FM system use reduced

  4. Thermal Issues in Disk Drive Design: Challenges and Possible Solutions

    E-Print Network [OSTI]

    Gurumurthi, Sudhanva

    are to adhere to the thermal design envelope. We motivate the need for continued improvements in IDR by showing throttles its activities to remain within the thermal envelope. Categories and Subject Descriptors: B.4Thermal Issues in Disk Drive Design: Challenges and Possible Solutions SUDHANVA GURUMURTHI

  5. What Drives the Public Mood of Income Inequality

    E-Print Network [OSTI]

    Myers, Rebekah M

    2014-08-13T23:59:59.000Z

    on In co m e In eq ua lity , 1 97 1? 20 12 1970 1980 1990 2000 2010 Year Figure 3.1: Public Mood on Income Inequality, 1971-2012 23 Table 3.1: Do Economic Factors Drive Public Mood Towards Income Inequality? Public Mood of Income Inequalityt?1 0.813 (0...

  6. Global biofuel drive raises risk of eviction for African farmers

    E-Print Network [OSTI]

    Global biofuel drive raises risk of eviction for African farmers African farmers risk being forced from their lands by investors or government projects as global demand for biofuels encourages changes at risk if African farmland is turned over to growing crops for biofuel. With growing pressure to find

  7. innovati nWind Turbine Design Innovations Drive Industry Transformation

    E-Print Network [OSTI]

    innovati nWind Turbine Design Innovations Drive Industry Transformation For more than 20 years. Tackling Turbine Blade Inefficiencies In 1984, NREL researchers began investigating problems with wind turbine blade designs. Inefficiency was a significant barrier to lowering the cost of wind energy

  8. Office of Human Resources 1851 N. Research Drive

    E-Print Network [OSTI]

    Moore, Paul A.

    supervision of the Depository Supervisor, using the online systems of the cooperating libraries (Bowling GreenOffice of Human Resources 1851 N. Research Drive Bowling Green, Ohio 43402 (419) 372-8421 Fax: (419) 372-2920 E-mail: ohr@bgnet.bgsu.edu Position Vacancy Announcement LIBRARY ASSOCIATE 1 University

  9. Office of Human Resources 1851 N. Research Drive

    E-Print Network [OSTI]

    Moore, Paul A.

    Office of Human Resources 1851 N. Research Drive Bowling Green, Ohio 43403 (419) 372-8421 Fax: (419) 372-2920 E-mail: ohr@bgsu.edu Position Vacancy Announcement LIBRARY ASSOCIATE 2 Access Services, University Libraries Pay Grade: 9/$16.28 Job Opening Number: L- 62735 Posted: Monday, March 17, 2014 Posting

  10. Using HPM-Sampling to Drive Dynamic Compilation Dries Buytaert

    E-Print Network [OSTI]

    Eeckhout, Lieven

    Using HPM-Sampling to Drive Dynamic Compilation Dries Buytaert Andy Georges Michael Hind Matthew the frequently executed methods. We de- scribe and comprehensively evaluate HPM-sampling, a sim- ple) that addresses the aforementioned limitations. We show that HPM-sampling is more accurate; has low overhead

  11. Abstract--With increasing international trade of secondary materials it is imperative to start including it in our analysis of

    E-Print Network [OSTI]

    Gutowski, Timothy

    Abstract-- With increasing international trade of secondary materials it is imperative to start, exhibiting an increase in waste recovery and recycling rates. However, the key underlying factor driving trade, taking recycling overseas, where there exists not only a greater demand for secondary materials

  12. Polar-direct-drive experiments on the National Ignition Facility

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

    Hohenberger, M.; Radha, P. B.; Myatt, J. F.; LePape, S.; Marozas, J. A.; Marshall, F. J.; Michel, D. T.; Regan, S. P.; Seka, W.; Shvydky, A.; et al

    2015-05-01T23:59:59.000Z

    To support direct-drive inertial confinement fusion experiments at the National Ignition Facility (NIF) [G. H. Miller, E. I. Moses, and C. R. Wuest, Opt. Eng. 43, 2841 (2004)] in its indirect-drive beam configuration, the polar-direct-drive (PDD) concept [S. Skupsky et al., Phys. Plasmas 11, 2763 (2004)] has been proposed. Ignition in PDD geometry requires direct-drive–specific beam smoothing, phase plates, and repointing the NIF beams toward the equator to ensure symmetric target irradiation. First experiments to study the energetics and preheat in PDD implosions at the NIF have been performed. These experiments utilize the NIF in its current configuration, including beammore »geometry, phase plates, and beam smoothing. Room-temperature, 2.2-mm-diam plastic shells filled with D? gas were imploded with total drive energies ranging from ~500 to 750 kJ with peak powers of 120 to 180 TW and peak on-target irradiances at the initial target radius from 8 10¹? to 1.2 10¹?W/cm². Results from these initial experiments are presented, including measurements of shell trajectory, implosion symmetry, and the level of hot-electron preheat in plastic and Si ablators. Experiments are simulated with the 2-D hydrodynamics code DRACO including a full 3-D ray-trace to model oblique beams, and models for nonlocal electron transport and cross-beam energy transport (CBET). These simulations indicate that CBET affects the shell symmetry and leads to a loss of energy imparted onto the shell, consistent with the experimental data.« less

  13. Polar-direct-drive experiments on the National Ignition Facility

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

    Hohenberger, M. [Lab. for Laser Energetics, University of Rochester, Rochester, NY (United States)] (ORCID:0000000258879711); Radha, P. B. [Lab. for Laser Energetics, University of Rochester, Rochester, NY (United States); Myatt, J. F. [Lab. for Laser Energetics, University of Rochester, Rochester, NY (United States); LePape, S. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Marozas, J. A. [Lab. for Laser Energetics, University of Rochester, Rochester, NY (United States); Marshall, F. J. [Lab. for Laser Energetics, University of Rochester, Rochester, NY (United States); Michel, D. T. [Lab. for Laser Energetics, University of Rochester, Rochester, NY (United States)] (ORCID:0000000166894359); Regan, S. P. [Lab. for Laser Energetics, University of Rochester, Rochester, NY (United States); Seka, W. [Lab. for Laser Energetics, University of Rochester, Rochester, NY (United States); Shvydky, A. [Lab. for Laser Energetics, University of Rochester, Rochester, NY (United States); Sangster, T. C. [Lab. for Laser Energetics, University of Rochester, Rochester, NY (United States)] (ORCID:0000000340402672); Bates, J. W. [U. S. Naval Research Lab., Washington, DC (United States)] (ORCID:0000000188087240); Betti, R. [Lab. for Laser Energetics, University of Rochester, Rochester, NY (United States); Boehly, T. R. [Lab. for Laser Energetics, University of Rochester, Rochester, NY (United States); Bonino, M. J. [Lab. for Laser Energetics, University of Rochester, Rochester, NY (United States); Casey, D. T. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Collins, T. J. B. [Lab. for Laser Energetics, University of Rochester, Rochester, NY (United States); Craxton, R. S. [Lab. for Laser Energetics, University of Rochester, Rochester, NY (United States)] (ORCID:0000000158858227); Delettrez, J. A. [Lab. for Laser Energetics, University of Rochester, Rochester, NY (United States); Edgell, D. H. [Lab. for Laser Energetics, University of Rochester, Rochester, NY (United States); Epstein, R. [Lab. for Laser Energetics, University of Rochester, Rochester, NY (United States)] (ORCID:0000000340628444); Fiksel, G. [Lab. for Laser Energetics, University of Rochester, Rochester, NY (United States); Fitzsimmons, P. [General Atomics, San Diego, CA (United States); Frenje, J. A. [MIT (Massachusetts Inst. of Technology), Cambridge, MA (United States)] (ORCID:0000000168460378); Froula, D. H. [Lab. for Laser Energetics, University of Rochester, Rochester, NY (United States); Goncharov, V. N. [Lab. for Laser Energetics, University of Rochester, Rochester, NY (United States); Harding, D. R. [Lab. for Laser Energetics, University of Rochester, Rochester, NY (United States); Kalantar, D. H. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Karasik, M. [U. S. Naval Research Lab., Washington, DC (United States); Kessler, T. J. [Lab. for Laser Energetics, University of Rochester, Rochester, NY (United States); Kilkenny, J. D. [General Atomics, San Diego, CA (United States); Knauer, J. P. [Lab. for Laser Energetics, University of Rochester, Rochester, NY (United States); Kurz, C. [General Atomics, San Diego, CA (United States); Lafon, M. [Lab. for Laser Energetics, University of Rochester, Rochester, NY (United States); LaFortune, K. N. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); MacGowan, B. J. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Mackinnon, A. J. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); MacPhee, A. G. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)] (ORCID:0000000341604479); McCrory, R. L. [Lab. for Laser Energetics, University of Rochester, Rochester, NY (United States); McKenty, P. W. [Lab. for Laser Energetics, University of Rochester, Rochester, NY (United States); Meeker, J. F. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Meyerhofer, D. D. [Lab. for Laser Energetics, University of Rochester, Rochester, NY (United States)

    2015-05-01T23:59:59.000Z

    To support direct-drive inertial confinement fusion experiments at the National Ignition Facility (NIF) [G. H. Miller, E. I. Moses, and C. R. Wuest, Opt. Eng. 43, 2841 (2004)] in its indirect-drive beam configuration, the polar-direct-drive (PDD) concept [S. Skupsky et al., Phys. Plasmas 11, 2763 (2004)] has been proposed. Ignition in PDD geometry requires direct-drive–specific beam smoothing, phase plates, and repointing the NIF beams toward the equator to ensure symmetric target irradiation. First experiments to study the energetics and preheat in PDD implosions at the NIF have been performed. These experiments utilize the NIF in its current configuration, including beam geometry, phase plates, and beam smoothing. Room-temperature, 2.2-mm-diam plastic shells filled with D? gas were imploded with total drive energies ranging from ~500 to 750 kJ with peak powers of 120 to 180 TW and peak on-target irradiances at the initial target radius from 8 10¹? to 1.2 10¹?W/cm². Results from these initial experiments are presented, including measurements of shell trajectory, implosion symmetry, and the level of hot-electron preheat in plastic and Si ablators. Experiments are simulated with the 2-D hydrodynamics code DRACO including a full 3-D ray-trace to model oblique beams, and models for nonlocal electron transport and cross-beam energy transport (CBET). These simulations indicate that CBET affects the shell symmetry and leads to a loss of energy imparted onto the shell, consistent with the experimental data.

  14. South African Hake Sales Increase

    E-Print Network [OSTI]

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

  15. Work performed by a Classical-"reversible"-Carnot cycle: Raising's distribution for the small "driving weights"

    E-Print Network [OSTI]

    Francesco di Liberto

    2000-06-28T23:59:59.000Z

    The expansions or the compressions of the ideal gas in the quasi-static Carnot cycle, can be performed (on adiabatic or isothermal way) by slowly increasing or decreasing the external pressure by means of small weights acting on the piston of the vessel containing the gas. We call them shortly the ``driving weights'' (dw). Let N be their number, a large one. To determine the work performed by the ideal gas in the cycle the ``driving weights'' must be handled carefully. If we let them move on-off the piston only horizontally, their vertical motions will be due only to the gas. Here we show that, at the end, while some of them will have moved down (will have negative raising) the remaining ones (the majority) will have moved up (will have positive raising) so that the total work performed by the ideal gas equals the total variation of the gravitational potential energy of the ``driving weghts''. The cycle is performed in 2N time-steps. For each step t_i, with i in 1,..,2N, we give H(t_i), and DH(t_{i-1},t_i), respectively the height and the raising of the piston. Moreover the overall raising of the individual dw's (i.e. h_k, with k in 1...N), and their distribution are given in simple, general cases. The efficiency and the dissipated work are also evaluated. This paper is aimed at imparting a deeper understanding of the ideal Carnot Engine and may also be useful as a segment in a didactic path on elementary calculus and statistics.

  16. Simulation of a novel electromechanical engine valve drive to quantify performance gains in fuel consumption

    E-Print Network [OSTI]

    Miller, Justin (Justin Lee)

    2011-01-01T23:59:59.000Z

    This thesis describes the modeling and simulation of a novel electromechanical valve drive known as the MIT EMV. This valve drive allows an engine to achieve variable valve timing which has been shown to produce improvements ...

  17. FEMP and U.S. Army Corps of Engineers Partner to Drive Down Federal...

    Office of Environmental Management (EM)

    FEMP and U.S. Army Corps of Engineers Partner to Drive Down Federal Energy Costs FEMP and U.S. Army Corps of Engineers Partner to Drive Down Federal Energy Costs March 26, 2015 -...

  18. The Hydrophobic Effect Drives the Recognition of Hydrocarbons by an Anionic Metal-Ligand Cluster

    E-Print Network [OSTI]

    Biros, Shannon

    2009-01-01T23:59:59.000Z

    Drives the Recognition of Hydrocarbons by an Anionic Metal-Drives the Recognition of Hydrocarbons by an Anionic Metal-including saturated hydrocarbons, 11,12 in aqueous solution,

  19. Solar wind driving of magnetospheric ULF waves: Field line resonances driven by dynamic pressure fluctuations

    E-Print Network [OSTI]

    Solar wind driving of magnetospheric ULF waves: Field line resonances driven by dynamic pressure observational studies suggest that solar wind dynamic pressure fluctuations can drive magnetosphericFedderMobarry (LFM) global, threedimensional magnetohydrodynamic (MHD) simulations of the solar wind

  20. High Precision Control of Indirect Drive Systems Based on End-effector Sensor Information

    E-Print Network [OSTI]

    Han, Cheng-Huei

    2009-01-01T23:59:59.000Z

    Block diagram of a single-joint indirect drive train witha Figure 4.4: Block diagram of a single-joint indirect driveBlock diagram of the control system given in Section 3.6. Single-Joint

  1. Analysis of Battery Wear and V2G Benefits Using Real-world Drive...

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

    Battery Wear and V2G Benefits Using Real-world Drive Cycles and Ambient Data Analysis of Battery Wear and V2G Benefits Using Real-world Drive Cycles and Ambient Data 2011 DOE...

  2. Measured Savings of DC to AC Drive Retrofit in Plastic Extrusion

    E-Print Network [OSTI]

    Sfeir, R. A.

    2008-01-01T23:59:59.000Z

    This paper presents the potential electrical energy efficiency improvements for utilizing alternating current (AC) motors controlled by variable frequency drives (VFD) in place of direct current (DC) motors to drive plastic extrusion machines. A...

  3. A study of alternative drive control interfaces for next-generation electric vehicles

    E-Print Network [OSTI]

    Post, C. Christopher (Charles Christopher)

    2011-01-01T23:59:59.000Z

    The drive control interface in automobiles has not significantly changed for almost a century. Recent advances in electric vehicles and drive-by-wire technology allow for new alternative interfaces that enable novel vehicle ...

  4. Energy Department Awards $2.2 Million to Drive Innovative Solutions...

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

    Awards 2.2 Million to Drive Innovative Solutions, Lower Costs of Solar Energy Department Awards 2.2 Million to Drive Innovative Solutions, Lower Costs of Solar March 10, 2014 -...

  5. CAMPAIGNING, CANVASSING AND PETITION DRIVES ON THE MICHIGAN STATE UNIVERSITY CAMPUS

    E-Print Network [OSTI]

    Liu, Taosheng

    CAMPAIGNING, CANVASSING AND PETITION DRIVES ON THE MICHIGAN STATE UNIVERSITY CAMPUS - GUIDELINES - Michigan State University encourages students to be informed about and participate in the political process campaigning, canvassing and petitioning drives on the Michigan State University campus. These statements

  6. Evaluating Importance Ratings as an Alternative to Mental Models in Predicting Driving Crashes and Moving Violations

    E-Print Network [OSTI]

    McDonald, Jennifer Nicole

    2012-07-16T23:59:59.000Z

    The present study investigated the extent to which importance ratings (i.e., a measure of perceived importance for driving-related concepts) are a viable alternative to traditional mental model assessment methods in predicting driving performance...

  7. Design and testing of a sensorless switched reluctance motor drive with a custom integrated circuit controller 

    E-Print Network [OSTI]

    Zhang, Yingxia

    1996-01-01T23:59:59.000Z

    The switched reluctance motor (SRM) has become an attractive alternative candidate to conventional ae or dc motors for adjustable speed drive applications. The SRM drive system consists of a power converter and a control section. Making the control...

  8. EV Everywhere: Electric Drive Systems Bring Power to Plug-in...

    Energy Savers [EERE]

    EV Everywhere: Electric Drive Systems Bring Power to Plug-in Electric Vehicles EV Everywhere: Electric Drive Systems Bring Power to Plug-in Electric Vehicles January 31, 2014 -...

  9. Would You Consider Driving a Vehicle that Can Run on Biodiesel...

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

    Would You Consider Driving a Vehicle that Can Run on Biodiesel? Would You Consider Driving a Vehicle that Can Run on Biodiesel? September 16, 2010 - 7:30am Addthis On Monday,...

  10. Current-drive experiments on the PLT Tokamak

    SciTech Connect (OSTI)

    Jobes, F.; Bernabei, S.; Efthimion, P.; Hooke, W.; Hosea, J.; Mazzucato, E.; Meservey, E.; Motley, R.; Stevens, J.; von Goeler, S.

    1983-06-01T23:59:59.000Z

    Lower hybrid current-drive experiments have been carried out on the PLT Tokamak. Steady currents up to 175 kA have been maintained for three seconds and 400 kA for 0.3 sec by the rf power alone. The principal current carrier appears to be a high energy (approx. 100 keV) electron tail, concentrated in the central 20 to 40 cm diameter core of the 80-cm PLT discharge. Effective current drive is observed only for anti n/sub e/ less than or equal to 8 x 10/sup 12/ cm/sup -3/. This limitation may be a wave propagation phenomenon and not a fundamental plasma physics effects.

  11. Optimal Electron Energies for Driving Chromospheric Evaporation in Solar Flares

    E-Print Network [OSTI]

    Reep, Jeffrey; Alexander, David

    2015-01-01T23:59:59.000Z

    In the standard model of solar flares, energy deposition by a beam of electrons drives strong chromospheric evaporation leading to a significantly denser corona and much brighter emission across the spectrum. Chromospheric evaporation was examined in great detail by Fisher, Canfield, & McClymont (1985a,b,c), who described a distinction between two different regimes, termed explosive and gentle evaporation. In this work, we examine the importance of electron energy and stopping depths on the two regimes and on the atmospheric response. We find that with explosive evaporation, the atmospheric response does not depend strongly on electron energy. In the case of gentle evaporation, lower energy electrons are significantly more efficient at heating the atmosphere and driving up-flows sooner than higher energy electrons. We also find that the threshold between explosive and gentle evaporation is not fixed at a given beam energy flux, but also depends strongly on the electron energy and duration of heating. Furt...

  12. Variable Frequency AC Drives for Cooling Tower Energy Efficiency

    E-Print Network [OSTI]

    Corey, R. W.

    1982-01-01T23:59:59.000Z

    speed fan drives. Fan speed is reduced to yield specific water temperatures at thermal conditions less difficult than design. The reduced air flow is accomplished by reduced fan power consumption, resulting in optimum cooling tower operation... and economics. Automatic fan speed control by sensing cold water temperature is the economic essence of the application of adjustable frequency power to A-C fan motors. 2.2 Cell Partitions In some multi-cell mechanical-draft cooling towers, the isolation...

  13. Wave equation analysis of pile driving in gravel

    E-Print Network [OSTI]

    Lawson, William Dieterich

    1984-01-01T23:59:59.000Z

    and gravel. The fundamental analysis procedure involves varying the soil damping parameter J to match measured static soil resistance and blowcount records. The analysis uses quake values determined by drawing a secant through a point corresponding to 25X... of the ultimate load on the load-deflection curves. For each selected pile, the J value that best correlates ultimate static resistance of the time of driving (calculated by the wave equation) and the measured ultimate static resistance from the load tests...

  14. Direct Fusion Drive for a Human Mars Orbital Mission

    SciTech Connect (OSTI)

    Paluszek, Michael [Princeton Satellite Systems; Pajer, Gary [Princeton Satellite Systems; Razin, Yosef [Princeton Satellite Systems; Slonaker, James [Princeton Satellite Systems; Cohen, Samuel [PPPL; Feder, Russ [PPPL; Griffin, Kevin [Princeton University; Walsh, Matthew [Princeton University

    2014-08-01T23:59:59.000Z

    The Direct Fusion Drive (DFD) is a nuclear fusion engine that produces both thrust and electric power. It employs a field reversed configuration with an odd-parity rotating magnetic field heating system to heat the plasma to fusion temperatures. The engine uses deuterium and helium-3 as fuel and additional deuterium that is heated in the scrape-off layer for thrust augmentation. In this way variable exhaust velocity and thrust is obtained.

  15. Extended cage adjustable speed electric motors and drive packages

    DOE Patents [OSTI]

    Hsu, John S. (Oak Ridge, TN)

    1999-01-01T23:59:59.000Z

    The rotor cage of a motor is extended, a second stator is coupled to this extended rotor cage, and the windings have the same number of poles. The motor torque and speed can be controlled by either injecting energy into or extracting energy out from the rotor cage. The motor produces less harmonics than existing doubly-fed motors. Consequently, a new type of low cost, high efficiency drive is produced.

  16. Mode 1 drive asymmetry in inertial confinement fusion implosions on the National Ignition Facility

    SciTech Connect (OSTI)

    Spears, Brian K., E-mail: spears9@llnl.gov; Edwards, M. J.; Hatchett, S.; Kritcher, A.; Lindl, J.; Munro, D.; Patel, P.; Robey, H. F.; Town, R. P. J. [Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808 (United States)] [Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808 (United States); Kilkenny, J. [General Atomics, P.O. Box 85608, San Diego, California 92186-5608 (United States)] [General Atomics, P.O. Box 85608, San Diego, California 92186-5608 (United States); Knauer, J. [Laboratory for Laser Energetics, 250 E. River Road Rochester, New York 14623-1212 (United States)] [Laboratory for Laser Energetics, 250 E. River Road Rochester, New York 14623-1212 (United States)

    2014-04-15T23:59:59.000Z

    Mode 1 radiation drive asymmetry (pole-to-pole imbalance) at significant levels can have a large impact on inertial confinement fusion implosions at the National Ignition Facility (NIF). This asymmetry distorts the cold confining shell and drives a high-speed jet through the hot spot. The perturbed hot spot shows increased residual kinetic energy and reduced internal energy, and it achieves reduced pressure and neutron yield. The altered implosion physics manifests itself in observable diagnostic signatures, especially the neutron spectrum which can be used to measure the neutron-weighted flow velocity, apparent ion temperature, and neutron downscattering. Numerical simulations of implosions with mode 1 asymmetry show that the resultant simulated diagnostic signatures are moved toward the values observed in many NIF experiments. The diagnostic output can also be used to build a set of integrated implosion performance metrics. The metrics indicate that P{sub 1} has a significant impact on implosion performance and must be carefully controlled in NIF implosions.

  17. Designing symmetric polar direct drive implosions on the Omega laser facility

    SciTech Connect (OSTI)

    Krasheninnikova, Natalia S.; Cobble, James A.; Murphy, Thomas J.; Tregillis, Ian L.; Bradley, Paul A.; Hakel, Peter; Hsu, Scott C.; Kyrala, George A.; Obrey, Kimberly A.; Schmitt, Mark J.; Baumgaertel, Jessica A.; Batha, Steven H. [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)] [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

    2014-04-15T23:59:59.000Z

    Achieving symmetric capsule implosions with Polar Direct Drive [S. Skupsky et al., Phys. Plasmas 11, 2763 (2004); R. S. Craxton et al., Phys. Plasmas 12, 056304 (2005); F. J. Marshall et al., J. Phys. IV France 133, 153–157 (2006)] has been explored during recent Defect Induced Mix Experiment campaign on the Omega facility at the Laboratory for Laser Energetics. To minimize the implosion asymmetry due to laser drive, optimized laser cone powers, as well as improved beam pointings, were designed using 3D radiation-hydrodynamics code HYDRA [M. M. Marinak et al., Phys. Plasmas 3, 2070 (1996)]. Experimental back-lit radiographic and self-emission images revealed improved polar symmetry and increased neutron yield which were in good agreement with 2D HYDRA simulations. In particular, by reducing the energy in Omega's 21.4° polar rings by 16.75%, while increasing the energy in the 58.9° equatorial rings by 8.25% in such a way as to keep the overall energy to the target at 16?kJ, the second Legendre mode (P{sub 2}) was reduced by a factor of 2, to less than 4% at bang time. At the same time the neutron yield increased by 62%. The polar symmetry was also improved relative to nominal DIME settings by a more radical repointing of OMEGA's 42.0° and 58.9° degree beams, to compensate for oblique incidence and reduced absorption at the equator, resulting in virtually no P{sub 2} around bang time and 33% more yield.

  18. Power Electronics and Electrical Drives Prof. Dr.-Ing. Joachim Bcker

    E-Print Network [OSTI]

    Hellebrand, Sybille

    Power Electronics and Electrical Drives Prof. Dr.-Ing. Joachim Böcker Research Topics Mechatronic Systems, Electrical Drives and Electric Vehicles Control, modeling and optimization of electrical drives vehiclesElectric vehicles RailCab Power Electronics Switched-mode power supplies High efficiency

  19. Electric vehicles: How much range is required for a day's driving? Nathaniel S. Pearre a,

    E-Print Network [OSTI]

    Firestone, Jeremy

    Electric vehicles: How much range is required for a day's driving? Nathaniel S. Pearre a, , Willett online xxxx Keywords: Electric vehicle Plug-in vehicle Daily driving range Range requirement Trip timing Vehicle design a b s t r a c t One full year of high-resolution driving data from 484 instrumented

  20. ANL/ESD/10-9 Highway Vehicle Electric Drive in the United States

    E-Print Network [OSTI]

    Kemner, Ken

    ANL/ESD/10-9 Highway Vehicle Electric Drive in the United States: 2009 Status and Issues Energy Laboratory, or UChicago Argonne, LLC. #12;ANL/ESD/10-9 Highway Vehicle Electric Drive in the United States .............................................................................................................. 1 2 STATE OF ELECTRIC DRIVE VEHICLE TECHNOLOGY .......................................... 4 2

  1. BATTERY-POWERED, ELECTRIC-DRIVE VEHICLES PROVIDING BUFFER STORAGE FOR PV CAPACITY VALUE

    E-Print Network [OSTI]

    Perez, Richard R.

    BATTERY-POWERED, ELECTRIC-DRIVE VEHICLES PROVIDING BUFFER STORAGE FOR PV CAPACITY VALUE Steven, however, the use of batteries from parked electric- drive vehicles (EDV) to provide buffer storage for PV requirements that will result in a number of new battery-powered electric drive vehicles being sold beginning

  2. Driving Smart Growth: Electric Vehicle Adoption and OffPeak Electricity Rates

    E-Print Network [OSTI]

    Holsinger, Kent

    Driving Smart Growth: Electric Vehicle Adoption and OffPeak Electricity Rates Peter Driving Smart Growth: Electric Vehicle Adoption Page 2 Executive Summary Reducing our dependence to electric vehicles (EVs)1 is core to reducing reliance on fossil fuels and driving smart growth

  3. Effect of GOR, Temperature, and Initial Water Saturation on Solution-Gas Drive in

    E-Print Network [OSTI]

    Firoozabadi, Abbas

    Effect of GOR, Temperature, and Initial Water Saturation on Solution-Gas Drive in Heavy-Oil have carried out an extensive set of tests on solution-gas drive for a heavy oil to study the effects was approximately 16% and higher. Introduction Solution-gas drive from some heavy oil reservoirs in Canada, Ven

  4. The effect of luminance on simulated driving speed Sarah J. Pritchard and Stephen T. Hammett

    E-Print Network [OSTI]

    Sheldon, Nathan D.

    The effect of luminance on simulated driving speed Sarah J. Pritchard and Stephen T. Hammett§ Dept such as contrast, luminance and adaptation duration. It has been suggested that such changes in perceived speed may influence driving behaviour. In order to evaluate the effect of luminance on driving speed we have measured

  5. Co-Simulation of an Electric Traction Drive Christoph Schulte and Joachim Bocker

    E-Print Network [OSTI]

    Paderborn, Universität

    ) for an electric drive, where the control structure, power electronics and motor are modeled in different environ works as a combined system. The system model of the electric drive discussed in this work consists--For the simulation of electrical drives, reduced- order models or simple look-up tables are often used in order

  6. Disk Drive Roadmap from the Thermal Perspective: A Case for Dynamic Thermal Management

    E-Print Network [OSTI]

    Gurumurthi, Sudhanva

    to the thermal envelope of drive design. We present two mechanisms for buying back some of this IDR loss allowing higher RPMs than the thermal envelope, and employs dynamic throttling of disk drive activities to remain within this envelope. Keywords: Disk Drives, Thermal Management, Technology Scaling. 1

  7. Disk Drive Roadmap from the Thermal Perspective: A Case for Dynamic Thermal Management

    E-Print Network [OSTI]

    Sivasubramaniam, Anand

    the thermal envelope, and employs dynamic throttling of disk drive activities to remain within this envelopeDisk Drive Roadmap from the Thermal Perspective: A Case for Dynamic Thermal Management Sudhanva The importance of pushing the performance envelope of disk drives continues to grow, not just in the server

  8. Be prepared. Learn how to drive in winter conditions. Winter weather challenges our

    E-Print Network [OSTI]

    Kavanagh, Karen L.

    Be prepared. Learn how to drive in winter conditions. Winter weather challenges our driving skills in cold weather. Watch for"black ice", areas of the road with a thin, almost invisible coating of ice weather. Mother Nature's road test. Know before you go. ShiftIntoWinter.ca | DriveBC.ca This information

  9. The Design of a Novel Prismatic Drive for a Three-DOF Parallel-Kinematics Machine

    E-Print Network [OSTI]

    Boyer, Edmond

    The Design of a Novel Prismatic Drive for a Three-DOF Parallel-Kinematics Machine D. Chablat1 , J.Chablat@irccyn.ec-nantes.fr angeles@cim.mcgill.ca April 7, 2011 Abstract The design of a novel prismatic drive is reported on a common translating follower. The design of Slide-o-Cam was reported elsewhere. This drive thus provides

  10. Testing Small Wind Turbine Generators: Design of a Driving Dynamometer Stephen Rehmeyer Pepe

    E-Print Network [OSTI]

    Kammen, Daniel M.

    Testing Small Wind Turbine Generators: Design of a Driving Dynamometer by Stephen Rehmeyer Pepe Sc, Berkeley Spring 2007 #12;Testing Small Wind Turbine Generators: Design of a Driving Dynamometer Copyright c 2007 by Stephen Rehmeyer Pepe #12;Abstract Testing Small Wind Turbine Generators: Design of a Driving

  11. An On-line Method for Stator Fault Detection in Multi-phase PMSM Drives

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    An On-line Method for Stator Fault Detection in Multi-phase PMSM Drives Fabien Meinguet*, Eric deals with an on-line fault detection method for multi-phase PMSM drives. The method is based an original method for detecting an abnormal asymmetrical behavior in five-phase PMSM drives and we apply

  12. Drive-bys and Trade-ups: The Impact of Crime on Residential Mobility Patterns in Los Angeles

    E-Print Network [OSTI]

    Hipp, John R; Tita, George E; Greenbaum, Robert T

    2009-01-01T23:59:59.000Z

    ed. Sage. Drive-bys and Trade-ups Flippen, Chenoa. 2004. "6):975-994. Drive-bys and Trade-ups Massey, Douglas S. , and802. Drive-bys and Trade-ups Sampson, Robert J. , Jeffrey D.

  13. Effects of increasing tip velocity on wind turbine rotor design.

    SciTech Connect (OSTI)

    Resor, Brian Ray; Maniaci, David Charles; Berg, Jonathan Charles; Richards, Phillip William

    2014-05-01T23:59:59.000Z

    A reduction in cost of energy from wind is anticipated when maximum allowable tip velocity is allowed to increase. Rotor torque decreases as tip velocity increases and rotor size and power rating are held constant. Reduction in rotor torque yields a lighter weight gearbox, a decrease in the turbine cost, and an increase in the capacity for the turbine to deliver cost competitive electricity. The high speed rotor incurs costs attributable to rotor aero-acoustics and system loads. The increased loads of high speed rotors drive the sizing and cost of other components in the system. Rotor, drivetrain, and tower designs at 80 m/s maximum tip velocity and 100 m/s maximum tip velocity are created to quantify these effects. Component costs, annualized energy production, and cost of energy are computed for each design to quantify the change in overall cost of energy resulting from the increase in turbine tip velocity. High fidelity physics based models rather than cost and scaling models are used to perform the work. Results provide a quantitative assessment of anticipated costs and benefits for high speed rotors. Finally, important lessons regarding full system optimization of wind turbines are documented.

  14. Tensiometer, drive probe for use with environmental testing equipment, and methods of inserting environmental testing equipment into a sample

    DOE Patents [OSTI]

    Hubbell, Joel M.; Sisson, James B.

    2005-07-26T23:59:59.000Z

    A method of inserting a tensiometer into a sample, comprises providing a drive probe configured to be engaged by direct push equipment; supporting a porous member from the drive probe; and driving the drive probe into the sample using a cone penetrometer. A tensiometer comprises a drive probe configured to be engaged by direct push equipment or a cone penetrometer; a porous member supported by the drive probe; and a pressure sensor in pressure sensing relation to the porous member.

  15. Increasing intermodal transportation in Europe through realizing the value of short sea shipping

    E-Print Network [OSTI]

    Tenekecioglu, Goksel

    2005-01-01T23:59:59.000Z

    This thesis describes the role of short sea shipping within the transportation network in the European Union. It examines the existence of externalities relating to congestion, infrastructure, air pollution, noise, and ...

  16. Magnitude and value of electric vehicle emissions reductions for six driving cycles in four US cities with varying air quality problems

    SciTech Connect (OSTI)

    Wang, Q. (California Univ., Davis, CA (United States)); Santini, D.L. (Argonne National Lab., IL (United States))

    1992-01-01T23:59:59.000Z

    The emissions of logically competing mid-1990 gasoline vehicles (GVs) and electric vehicles (EVs) are estimated as if the vehicles were driven in the same pattern of driving. Six different driving cycles are evaluated, ranging in speed from 7 to 49 miles per hour (mph). These steps are repeated using specifics of fuel composition, electric power mix, and environmental conditions applicable to Chicago, Denver, Los Angeles, and New York in the month of July. The year 2000 emissions differences for each of four regulated pollutants - HC, CO, NO[sub x,] SO[sub x] - are estimated. CO[sub 2] emissions are also estimated. With use of EVs, HC and CO emissions are consistently lowered by 98% or more. CO[sub 2] emissions reductions are uniformly large at low speed, but variable at high speed. It is found that initially introduced EVs could achieve 100% emission reductions in Chicago by using off-peak power from nuclear power plants for EV electricity generation. Emissions reductions occur for all combinations in Los Angeles, and for most combinations in New York, excepting SO[sub x]. NO[sub x] emissions are reduced in all four cities. An avoided cost'' value for each regulated pollutant is estimated for each of the cities. The values for each city depend on severity of air quality violations. It is estimated that the emissions reduction value of EVs driven an average of one and one half hours per day in Los Angeles ranges from $1050 to $3,900; $590 to $2100 in New York; $270 to $1200 in Chicago, and $330 to $1250 in Denver (1989$). Assuming a range of about 100 miles in congested conditions with speeds of 10 mph or less, the estimates range from $3600 to $13300 for Los Angeles; $2004 to $7200 for New York; $930 to $2930 for Chicago; and $1120 to $4290 for Denver. Low estimates are obtained using EPA's draft Mobile5 model for GV emissions, high values by using California's EMFAC7EP-SCF1 model. The dollar value benefit estimates include no economic value.

  17. Magnitude and value of electric vehicle emissions reductions for six driving cycles in four US cities with varying air quality problems

    SciTech Connect (OSTI)

    Wang, Q. [California Univ., Davis, CA (United States); Santini, D.L. [Argonne National Lab., IL (United States)

    1992-12-31T23:59:59.000Z

    The emissions of logically competing mid-1990 gasoline vehicles (GVs) and electric vehicles (EVs) are estimated as if the vehicles were driven in the same pattern of driving. Six different driving cycles are evaluated, ranging in speed from 7 to 49 miles per hour (mph). These steps are repeated using specifics of fuel composition, electric power mix, and environmental conditions applicable to Chicago, Denver, Los Angeles, and New York in the month of July. The year 2000 emissions differences for each of four regulated pollutants - HC, CO, NO{sub x,} SO{sub x} - are estimated. CO{sub 2} emissions are also estimated. With use of EVs, HC and CO emissions are consistently lowered by 98% or more. CO{sub 2} emissions reductions are uniformly large at low speed, but variable at high speed. It is found that initially introduced EVs could achieve 100% emission reductions in Chicago by using off-peak power from nuclear power plants for EV electricity generation. Emissions reductions occur for all combinations in Los Angeles, and for most combinations in New York, excepting SO{sub x}. NO{sub x} emissions are reduced in all four cities. An ``avoided cost`` value for each regulated pollutant is estimated for each of the cities. The values for each city depend on severity of air quality violations. It is estimated that the emissions reduction value of EVs driven an average of one and one half hours per day in Los Angeles ranges from $1050 to $3,900; $590 to $2100 in New York; $270 to $1200 in Chicago, and $330 to $1250 in Denver (1989$). Assuming a range of about 100 miles in congested conditions with speeds of 10 mph or less, the estimates range from $3600 to $13300 for Los Angeles; $2004 to $7200 for New York; $930 to $2930 for Chicago; and $1120 to $4290 for Denver. Low estimates are obtained using EPA`s draft Mobile5 model for GV emissions, high values by using California`s EMFAC7EP-SCF1 model. The dollar value benefit estimates include no economic value.

  18. Lower hybrid heating and current drive on PLT

    SciTech Connect (OSTI)

    Stevens, J.E.; Bernabei, S.; Bitter, M.

    1983-03-01T23:59:59.000Z

    800 MHz lower hybrid waves have been launched into PLT with a six waveguide coupler. Recent improvements have allowed powers up to 400 kW to be launched with good coupling (R approx. 10 to 25%). Experiments at low density (anti n/sub e/ < 7 x 10/sup 12/ cm/sup -3/, i.e., ..omega../..omega../sub LH/ > 2) have demonstrated current drive and plasma heating. Experiments at higher densities have produced hot-ion tails, but so far have shown inefficient body heating. To date, only a limited parameters space has been investigated at high power.

  19. Analysis of resonance-driving imperfections in the AGS Booster

    SciTech Connect (OSTI)

    Gardner, C.; Shoji, Y.; Danby, G.; Glenn, J.W.; Jackson, G.J.; Soukas, A.; van Asselt, W.; Whalen, C.

    1994-08-01T23:59:59.000Z

    At the design intensity of 1.5 {times} 10{sup 13} ppp, the space charge tune shift in the AGS Booster at injection has been estimated to be about 0.35. The beam tunes are therefore spread over many lower order resonance lines and the associated stopbands must be corrected in order to minimize the amplitude growth due to resonance excitation. This requires proper compensation of the resonance-driving harmonics which result from random magnetic field errors. The observation and correction of second and third order resonance stopbands in the AGS Booster is reviewed, and an analysis of magnetic field imperfections based on the required corrections is given.

  20. Bichromatic Driving of a Solid State Cavity QED System

    E-Print Network [OSTI]

    Alexander Papageorge; Arka Majumdar; Erik D. Kim; Jelena Vuckovic

    2011-08-27T23:59:59.000Z

    The bichromatic driving of a solid state cavity quantum electrodynamics system is used to probe cavity dressed state transitions and observe coherent interaction between the system and the light field. We theoretically demonstrate the higher order cavity-dressed states, supersplitting, and AC stark shift in a solid state system comprised of a quantum dot strongly coupled to a photonic crystal cavity for on- and far off-resonant cases. For the off-resonant case, phonons mediate off-resonant coupling between the quantum dot and the photonic resonator, a phenomenon unique to solid state cavity quantum electrodynamics.

  1. High transformer ratio drive beams for wakefield accelerator studies

    SciTech Connect (OSTI)

    England, R. J.; Ng, C.-K.; Frederico, J.; Hogan, M. J.; Litos, M.; Muggli, P.; Joshi, C.; An, W.; Andonian, G.; Mori, W.; Lu, W. [SLAC National Accelerator Laboratory, Menlo Park, CA 94025 (United States); Max Planck Institute for Physics, 80805 Munich (Germany); University of California Los Angeles, Los Angeles, CA 90095 (United States); Tsinghua University, Beijing (China)

    2012-12-21T23:59:59.000Z

    For wakefield based acceleration schemes, use of an asymmetric (or linearly ramped) drive bunch current profile has been predicted to enhance the transformer ratio and generate large accelerating wakes. We discuss plans and initial results for producing such bunches using the 20 to 23 GeV electron beam at the FACET facility at SLAC National Accelerator Laboratory and sending them through plasmas and dielectric tubes to generate transformer ratios greater than 2 (the limit for symmetric bunches). The scheme proposed utilizes the final FACET chicane compressor and transverse collimation to shape the longitudinal phase space of the beam.

  2. Fluid equations in the presence of electron cyclotron current drive

    SciTech Connect (OSTI)

    Jenkins, Thomas G.; Kruger, Scott E. [Tech-X Corporation, 5621 Arapahoe Avenue, Boulder, Colorado 80303 (United States)

    2012-12-15T23:59:59.000Z

    Two-fluid equations, which include the physics imparted by an externally applied radiofrequency source near electron cyclotron resonance, are derived in their extended magnetohydrodynamic forms using the formalism of Hegna and Callen [Phys. Plasmas 16, 112501 (2009)]. The equations are compatible with the closed fluid/drift-kinetic model developed by Ramos [Phys. Plasmas 17, 082502 (2010); 18, 102506 (2011)] for fusion-relevant regimes with low collisionality and slow dynamics, and they facilitate the development of advanced computational models for electron cyclotron current drive-induced suppression of neoclassical tearing modes.

  3. Sub-wavelength position measurements with running wave driving fields

    E-Print Network [OSTI]

    J. Evers; S. Qamar

    2009-01-29T23:59:59.000Z

    A scheme for sub-wavelength position measurements of quantum particles is discussed, which operates with running-wave laser fields as opposed to standing wave fields proposed in previous setups. The position is encoded in the phase of the applied fields rather than in the spatially modulated intensity of a standing wave. Therefore, disadvantages of standing wave schemes such as cases where the atom remains undetected since it is at a node of the standing wave field are avoided. Reversing the directions of parts of the driving laser fields allows to switch between different magnification levels, and thus to optimize the localization.

  4. Protein folding: A complex potential for the driving force

    E-Print Network [OSTI]

    Chekmarev, Sergei F

    2013-01-01T23:59:59.000Z

    Using the Helmholtz decomposition of the vector field of folding fluxes in a reduced space of collective variables, a potential of the driving force for protein folding is determined. The potential has two components and can be written as a complex function. One component is responsible for the source and sink of the folding flows (representing, respectively, the unfolded states and the native state of the protein), and the other accounts for the vorticity of the flow that is produced at the boundaries of the main flow by the contact of the moving folding "fluid" with the quiescent surroundings. The theoretical consideration is illustrated by calculations for a model $\\beta$-hairpin protein.

  5. FTIR spectrometer with solid-state drive system

    DOE Patents [OSTI]

    Rajic, Slobodan (Knoxville, TN); Seals, Roland D. (Oak Ridge, TN); Egert, Charles M. (Oak Ridge, TN)

    1999-01-01T23:59:59.000Z

    An FTIR spectrometer (10) and method using a solid-state drive system with thermally responsive members (27) that are subject to expansion upon heating and to contraction upon cooling. Such members (27) are assembled in the device (10) so as to move an angled, reflective surface (22) a small distance. The sample light beam (13) is received at a detector (24) along with a reference light beam (13) and there it is combined into a resulting signal. This allows the "interference" between the two beams to occur for spectral analysis by a processor (29).

  6. DRIVING CURRENTS FOR FLUX ROPE CORONAL MASS EJECTIONS

    SciTech Connect (OSTI)

    Subramanian, Prasad [Indian Institute of Science Education and Research, Sai Trinity Building, Pashan, Pune 411021 (India); Vourlidas, Angelos [Code 7663, Naval Research Laboratory, Washington, DC 20375 (United States)], E-mail: p.subramanian@iiserpune.ac.in

    2009-03-10T23:59:59.000Z

    We present a method for measuring electrical currents enclosed by flux rope structures that are ejected within solar coronal mass ejections (CMEs). Such currents are responsible for providing the Lorentz self-force that propels CMEs. Our estimates for the driving current are based on measurements of the propelling force obtained using data from the LASCO coronagraphs aboard the SOHO satellite. We find that upper limits on the currents enclosed by CMEs are typically around 10{sup 10} A. We estimate that the magnetic flux enclosed by the CMEs in the LASCO field of view is a few times 10{sup 21} Mx.

  7. Linear hydraulic drive system for a Stirling engine

    DOE Patents [OSTI]

    Walsh, Michael M. (Schenectady, NY)

    1984-02-21T23:59:59.000Z

    A hydraulic drive system operating from the periodic pressure wave produced by a Stirling engine along a first axis thereof and effecting transfer of power from the Stirling engine to a load apparatus therefor and wherein the movable, or working member of the load apparatus is reciprocatingly driven along an axis substantially at right angles to the first axis to achieve an arrangement of a Stirling engine and load apparatus assembly which is much shorter and the components of the load apparatus more readily accessible.

  8. Electric Drive Transportation Association EDTA | Open Energy Information

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  9. Test Drive EIA's New Interactive Electricity Data Browser | Department of

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  10. Driving Transformation to Energy Efficient Buildings:Policies and Actions |

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  11. US DRIVE Hydrogen Delivery Technical Team Roadmap | Department of Energy

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  12. Driving the National Parks Forward | Department of Energy

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  13. Driving on "Green" Electrons | Department of Energy

    Energy Savers [EERE]

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  14. Do You Drive a Hybrid Electric Vehicle? | Department of Energy

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  15. Gift tag drive benefits local children and seniors

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  16. Diesel prices continue to increase

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  17. Diesel prices continue to increase

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  18. Diesel prices continue to increase

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  19. Technical Assistance: Increasing Code Compliance

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  20. Bifurcation and control of chaos in Induction motor drives

    E-Print Network [OSTI]

    Krishnendu Chakrabarty; Urmila Kar

    2014-10-24T23:59:59.000Z

    The induction motor controlled by Indirect Field Oriented Control (IFOC) is known to have high performance and better stability. This paper reports the dynamical behavior of an indirect field oriented control (IFOC) induction motor drive in the light of bifurcation theory. The speed of high performance induction motor drive is controlled by IFOC method. The knowledge of qualitative change of the behavior of the motor such as equilibrium points, limit cycles and chaos with the change of motor parameters and load torque are essential for proper control of the motor. This paper provides a numerical approach to understand better the dynamical behavior of an indirect field oriented control of a current-fed induction motor. The focus is on bifurcation analysis of the IFOC motor, with a particular emphasis on the change that affects the dynamics and stability under small variations of Proportional Integral controller (PI) parameters, load torque and k, the ratio of the rotor time constant and its estimate etc. Bifurcation diagrams are computed. This paper also attempts to discuss various types of the transition to chaos in the induction motor. The results of the obtained bifurcation simulations give useful guidelines for adjusting both motor model and PI controller parameters. It is also important to ensure desired operation of the motor when the motor shows chaotic behavior. Infinite numbers of unstable periodic orbits are embedded in a chaotic attractor. Any unstable periodic orbit can be stabilized by proper control algorithm. The delayed feedback control method to control chaos has been implemented in this system.