Sample records for rising highway speeds

  1. 3D Laser Imaging at Highway Speed Kelvin CP Wang

    E-Print Network [OSTI]

    3D Laser Imaging at Highway Speed Kelvin CP Wang And the Team Formerly at the University Concrete Consortium Meeting Oklahoma City Sheraton Hotel #12;3D Laser Imaging for Pavements Mature Potential to Cover Most if Not All Data Collection on Pavement Surface How to Obtain True 1mm 3D Visual

  2. Relationship between speed distribution measures and rural two-lane highway characteristics

    E-Print Network [OSTI]

    Collins, Jon Michael

    2012-06-07T23:59:59.000Z

    mandated 55 mph (88. 5 km/h) speed limit, the original design speed of a roadway does not always meet the desired operating speeds of today's drivers. Thus, a design consistency approach has been suggested as an alternative means for ensuring driver... STATISTICS PRELIMINARY ANALYSIS MEAN SPEED REDUCTION ANALYSIS STANDARD DEVIATION DIFFERENCE ANALYSIS . . 80 . 88 . . 91 VII SUMMARY AND CONCLUSIONS 93 CONCLUSIONS . RECOMMENDATIONS 95 97 REFERENCES APPENDIX . . VITA 100 I04 117 LIST...

  3. Evaluation of alignment indices in estimating tangent speeds on rural two-lane highways

    E-Print Network [OSTI]

    Parma, Kelly Daniel

    1997-01-01T23:59:59.000Z

    The design-speed concept has been used in attempting to ensure design and operating-speed consistency of roads in the United States, However, this concept has no effective controls on maximum speeds (e.g., tangents), which reduces its effectiveness...

  4. An evaluation of operating speed reduction as a surrogate measure for accident experience on horizontal curves on two-lane rural highways

    E-Print Network [OSTI]

    Anderson, Ingrid Bernice

    1993-01-01T23:59:59.000Z

    AN EVALUATION OF OPERATING SPEED REDUCTION AS A SURROGATE MEASURE FOR ACCIDENT EXPERIENCE ON HORIZONTAL CURVES ON TWO-LANE RURAL HIGHWAYS A Thesis by INGRID BERNICE ANDERSON Submitted to the Office of Graduate Studies of Texas A&M University... in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 1993 Major Subject: Civil Engineering AN EVALUATION OF OPERATING SPEED REDUCTION AS A SURROGATE MEASURE OF ACCIDENT EXPERIENCE ON HORIZONTAL CURVES ON TWO-LANE RURAL...

  5. Comparison of day and night vehicular speeds on horizontal curves on rural two-lane highways

    E-Print Network [OSTI]

    Guzman, Jesus

    1996-01-01T23:59:59.000Z

    the magnitude of the difference between daytime and nighttime speeds is small for all degrees of curvature, a variable accounting for light condition is not needed for operating-speedbased profile modeling for horizontal alignment design consistency evaluation....

  6. A speed prediction model for a U.S. operating speed-based design consistency procedure on two-lane rural highways

    E-Print Network [OSTI]

    Ottesen, Jeffery Lynn

    1993-01-01T23:59:59.000Z

    was selected (MSE=l0. 43, R'=0. 802). No significant difference was found between the estimated values gencratcd by fourth-order polynomial model and the simple linear model (or=0. 05). Other factors such as the posted speed limit and operational... the design speed concept exclusively. ~g speed- based geometric design attempts to do what the design speed concept originally intended: Transportation Resemh Record 1195, National Research Council, Washington, D. C. , 1988, is used as a model...

  7. Analysis of improvements in system efficiency and safety at highway-railroad-pedestrian grade crossings

    E-Print Network [OSTI]

    Tydlacka, Jonathan Michael

    2013-02-22T23:59:59.000Z

    The purpose of this project was to perform micro-simulation analyses on intersections near Highway-Railroad Grade Crossings to determine if controlling mean train speed and train speed variability would improve safety and reduce delays. The first...

  8. An investigation into the use of highway traffic signals at highway-railroad grade crossings

    E-Print Network [OSTI]

    Frieslaar, Andre Henry

    1997-01-01T23:59:59.000Z

    2 Highway Speed Limit Classification 3 Light Condition Classification 4 Presence of Drunk Driver Classification 5 Driver Age Group Classification . . 43 50 52 57 LIST OF TABLES TABLE Page 1 Fatal Accidents Based on FARS Traffic Control... Device 2 Traffic Control Comparison between FARS and DOT/AAR Databases. . . 3 Fatal Accident Rates Based on DOT/AAR Traffic Control Device . 4 Driver Related Factor Results 5 FARS Variables Used in Analysis . 6 Driver Related Factor Classification...

  9. Highway Crash Cushions

    E-Print Network [OSTI]

    White, Monroe Carlton

    1971-01-01T23:59:59.000Z

    . (August 1971) Monroe Carlton White, B. S. , Texas A&M University Directed by: Dr'. T. J. Hirsch Statistics indi. cate that approximately 20 to 35/ of motor vehicle accident fatalities on highways and freeways were the re- sult of colliding with fixed... roadside structures. A device which would cushion vehicles that collide with these rigid obstacles could thus save the lives of and decrease injuries to occupants, and minimize property damage to colliding vehicles. Four such devices are presently...

  10. An evaluation of alternative horizontal curve design approaches for rural two-lane highways

    E-Print Network [OSTI]

    Voigt, Anthony Paul

    1995-01-01T23:59:59.000Z

    documents an evaluation of the effects of superelevation on operating speeds and accident experience and the effects of side friction demand on accident experience at horizontal curves on rural two-lane highways. Variables considered in operating speed.... The hypothesis of this portion of the study was that the addition of superelevation would cause operating speeds to increase. Superelevation was found to have a significant influence on vehicle operating speeds. Potential accident surrogates examined included...

  11. Technical Support Document: 50% Energy Savings Design Technology Packages for Highway Lodging Buildings

    SciTech Connect (OSTI)

    Jiang, Wei; Gowri, Krishnan; Lane, Michael D.; Thornton, Brian A.; Rosenberg, Michael I.; Liu, Bing

    2009-09-28T23:59:59.000Z

    This Technical Support Document (TSD) describes the process, methodology and assumptions for development of the 50% Energy Savings Design Technology Packages for Highway Lodging Buildings, a design guidance document intended to provide recommendations for achieving 50% energy savings in highway lodging properties over the energy-efficiency levels contained in ANSI/ASHRAE/IESNA Standard 90.1-2004, Energy Standard for Buildings Except Low-Rise Residential Buildings.

  12. Wisconsin Strategic Highway Safety Plan 2011 2013

    E-Print Network [OSTI]

    Sheridan, Jennifer

    will also play key roles in establishing and nurturing a culture of highway safety values in the BadgerWisconsin Strategic Highway Safety Plan 2011 ­ 2013 Published by the Wisconsin Department of Transportation Mark Gottlieb, P.E., Secretary Wisconsin DOT Traffic Safety Council #12;Zero in Wisconsin ­ Any

  13. Off-Highway Heavy Vehicle Diesel Efficiency Improvement and Emissions...

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

    Off-Highway Heavy Vehicle Diesel Efficiency Improvement and Emissions Reduction Off-Highway Heavy Vehicle Diesel Efficiency Improvement and Emissions Reduction 2005 Diesel Engine...

  14. administration federal highway: Topics by E-print Network

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

    traffic flow control in automated highway systems Luis Alvarez a,*, Roberto 13 October 1999; accepted 8 April 2002 Abstract Traffic flow control in automated highway systems...

  15. Eaton Aftertreatment System (EAS) for On-Highway Diesel Engines

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

    System (EAS) for On- Highway Diesel Engines Highway Diesel Engines Haoran Hu Eaton Corporation August 22, 2006 2004 Eaton Corporation. All rights reserved. Agenda...

  16. Texas Hydrogen Highway - Fuel Cell Hybrid Bus and Fueling Infrastructu...

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

    Hydrogen Highway - Fuel Cell Hybrid Bus and Fueling Infrastructure Technology Showcase Texas Hydrogen Highway - Fuel Cell Hybrid Bus and Fueling Infrastructure Technology Showcase...

  17. The Rising Sea

    E-Print Network [OSTI]

    Miller, Ryder W.

    2011-01-01T23:59:59.000Z

    in the thick of a sea level rise. After reading the evidencepredictive figure for ocean level rise by the turn of thethat a 7-foot (2 m) sea level rise by the year 2100 should

  18. Design of highway embankments using tire chips

    SciTech Connect (OSTI)

    Bosscher, P.J.; Edil, T.B. [Univ. of Wisconsin, Madison, WI (United States). Dept. of Civil and Environmental Engineering; Kuraoka, S. [National Research Council Canada, Ottawa, Ontario (Canada). Inst. for Research in Construction

    1997-04-01T23:59:59.000Z

    This paper describes research undertaken to develop design procedures for using shredded scrap tires as a lightweight fill material in highway construction. The benefits of using scrap tires are particularly enhanced if they can be used to replace virgin construction materials made from nonrenewable resources. This paper addresses the use of tire chips as a highway embankment material. Design parameters for embankments constructed using discarded shredded tires are presented based on laboratory model studies, numerical analyses, and field performance of test fills. The conclusions of this report support the use of tire chips as an environmentally acceptable lightweight fill in highway applications if properly confined. Recommendations for design procedures and construction specifications for the use of tire chips in highway fills are provided.

  19. Empirical Features of Spontaneous and Induced Traffic Breakdowns in Free Flow at Highway Bottlenecks

    E-Print Network [OSTI]

    Kerner, Boris S; Klenov, Sergey L; Rehborn, Hubert; Leibel, Michael

    2015-01-01T23:59:59.000Z

    Based on an empirical study of real field traffic data measured in 1996--2014 through road detectors installed on German freeways, we reveal physical features of empirical nuclei for spontaneous traffic breakdown in free flow at highway bottlenecks. It is shown that the source of a nucleus for traffic breakdown is the solely difference between empirical spontaneous and induced traffic breakdowns at a highway bottleneck. Microscopic traffic simulations with a stochastic traffic flow model in the framework of three-phase theory explain the empirical findings. It turns out that in the most cases, a nucleus for empirical spontaneous traffic breakdown occurs through an interaction of one of waves in free flow with an empirical permanent speed disturbance localized at a highway bottleneck. The wave is a localized structure in free flow, in which the total flow rate is larger and the speed averaged across the highway is smaller than outside the wave. The waves in free flow appear due to oscilations in the percentage...

  20. From marginalized to optimized : re-envisioning urban highway corridors

    E-Print Network [OSTI]

    Spicer, Sarah J

    2011-01-01T23:59:59.000Z

    The past century of highway construction has assumed relentless growth of vehicular traffic capacity. Yet today is an era of highway rationalization, aging facilities, strained finances, peak oil concerns, climate change, ...

  1. 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

  2. The sun also rises.

    E-Print Network [OSTI]

    Erwin, Suzanne K.

    2009-01-01T23:59:59.000Z

    ??This is an adaptation of 'Fiesta: The Sun Also Rises'. The story is changed in form and function from a book into a screenplay. And (more)

  3. Technical Support Document: The Development of the Advanced Energy Design Guide for Highway Lodging Buildings

    SciTech Connect (OSTI)

    Jiang, Wei; Jarnagin, Ronald E.; Gowri, Krishnan; McBride, M.; Liu, Bing

    2008-09-30T23:59:59.000Z

    This Technical Support Document (TSD) describes the process and methodology for development of the Advanced Energy Design Guide for Highway Lodgings (AEDG-HL or the Guide), a design guidance document intended to provide recommendations for achieving 30% energy savings in highway lodging properties over levels contained in ANSI/ASHRAE/IESNA Standard 90.1-1999, Energy Standard for Buildings Except Low-Rise Residential Buildings. The AEDG-HL is the fifth in a series of guides being developed by a partnership of organizations, including the American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. (ASHRAE), the American Institute of Architects (AIA), the Illuminating Engineering Society of North America (IESNA), the United States Green Buildings Council (USGBC), and the U.S. Department of Energy (DOE).

  4. Modeling highway travel time distribution with conditional probability models

    SciTech Connect (OSTI)

    Oliveira Neto, Francisco Moraes [ORNL] [ORNL; Chin, Shih-Miao [ORNL] [ORNL; Hwang, Ho-Ling [ORNL] [ORNL; Han, Lee [University of Tennessee, Knoxville (UTK)] [University of Tennessee, Knoxville (UTK)

    2014-01-01T23:59:59.000Z

    ABSTRACT Under the sponsorship of the Federal Highway Administration's Office of Freight Management and Operations, the American Transportation Research Institute (ATRI) has developed performance measures through the Freight Performance Measures (FPM) initiative. Under this program, travel speed information is derived from data collected using wireless based global positioning systems. These telemetric data systems are subscribed and used by trucking industry as an operations management tool. More than one telemetric operator submits their data dumps to ATRI on a regular basis. Each data transmission contains truck location, its travel time, and a clock time/date stamp. Data from the FPM program provides a unique opportunity for studying the upstream-downstream speed distributions at different locations, as well as different time of the day and day of the week. This research is focused on the stochastic nature of successive link travel speed data on the continental United States Interstates network. Specifically, a method to estimate route probability distributions of travel time is proposed. This method uses the concepts of convolution of probability distributions and bivariate, link-to-link, conditional probability to estimate the expected distributions for the route travel time. Major contribution of this study is the consideration of speed correlation between upstream and downstream contiguous Interstate segments through conditional probability. The established conditional probability distributions, between successive segments, can be used to provide travel time reliability measures. This study also suggests an adaptive method for calculating and updating route travel time distribution as new data or information is added. This methodology can be useful to estimate performance measures as required by the recent Moving Ahead for Progress in the 21st Century Act (MAP 21).

  5. The economic impacts of highway widening projects

    E-Print Network [OSTI]

    Jackson, Patricia Ann

    1997-01-01T23:59:59.000Z

    Research Program (NCHRP) surveyed states, provinces, and MPOs regarding highway widening projects undertaken from 1993 to 1995. Results of this survey showed that most urban impacts are magnified by the density of residential, commercial, and industrial... result of the 1995 NCHRP study. Portions of the results from the 1995 NCHRP synthesis study were reviewed to identify factors pertinent to this research study. Results showed access as the issue most frequently cited by businesses. Access frequency...

  6. SAFETY ANALYSIS ON RAIL HIGHWAY AT-GRADE CROSSING IN ALABAMA

    E-Print Network [OSTI]

    Illinois at Urbana-Champaign, University of

    Administration (FRA) database · Highway-rail crossing inventory · Highway-rail crossing history file · Highway-rail crossing accident database Alabama Department of Transportation (ALDOT) database · Rail-highway at,720 RHGCs FRA highway-rail crossing history file Crossing ID Crossing characteristics Crash count over 1998

  7. Structural and safety characteristics and warrants for highway traffic barriers

    E-Print Network [OSTI]

    Kohutek, Terry Lee

    1975-01-01T23:59:59.000Z

    Ross Highway traffic barriers are highway appurtenances that provide vehicle occupants with a relative degree of protection from roadside hazards and from errant vehicles encroaching across a median. The six basic types of traffic barr1ers are roads... are decision criteria that 1dentify sites along highways that need traff1c barrier installations. Structural and safety character- istics of the barr1ers refer to the impact performance, the structural integrity, and the safety of the vehicle occupants upon...

  8. Federal Highway Administration - Pilot Car Escort - Best Practices...

    Open Energy Info (EERE)

    Federal Highway Administration - Pilot Car Escort - Best Practices Guidelines Jump to: navigation, search OpenEI Reference LibraryAdd to library PermittingRegulatory Guidance -...

  9. Optimizing Highway Transportation at the United States Postal Service

    E-Print Network [OSTI]

    Anthony Pajunas

    2007-04-04T23:59:59.000Z

    Apr 4, 2007 ... Optimizing Highway Transportation at the United States Postal Service. Anthony Pajunas (Anthony.pajunas ***at*** usps.gov) Edward J. Matto...

  10. Financing West Virginia's Highways: Challenges and Opportunities1

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    Financing West Virginia's Highways: Challenges College of Business and Economics West Virginia University Joint Standing Committee on Finance West Virginia Legislature January 2010

  11. Hawaii Clean Energy Iniative - Construction Upon a State Highway...

    Open Energy Info (EERE)

    Construction Upon a State Highway Permit Packet Jump to: navigation, search OpenEI Reference LibraryAdd to library PermittingRegulatory Guidance - Instructions: Hawaii Clean...

  12. Development of design guidelines for two-lane, two-way rural highways in Texas

    E-Print Network [OSTI]

    Raghupathy, Selvam

    2001-01-01T23:59:59.000Z

    on rural highways, which allows trucks to travel at 96 km/hr, there has been a marked increase in the percentage of trucks using these facilities (/). Furthermore, due to the speed differential existing on these facilities with cars being allowed... to travel at 112 km/hr, trucks at 96 km/hr, and school buses at 80 km/hr, potentially unsafe passing movements are attempted by motorists, increasing the risk of crashes on these facilities (/). Thus the lack of adequate passing opportunities on two...

  13. Automotive speed control and cruise controls. (Bibliography from the Global Mobility database). Published Search

    SciTech Connect (OSTI)

    NONE

    1996-08-01T23:59:59.000Z

    The bibliography contains citations concerning speed controls and cruise controls for automobiles, trucks, and industrial forklifts. Topics include stability analysis, H-infinity control theory, Proportional Integrative Derivative (PID) control, and idle speed control. The use and effect of controls in various highway situations are reviewed. (Contains 50-250 citations and includes a subject term index and title list.) (Copyright NERAC, Inc. 1995)

  14. Off-Highway Transportation-Related Fuel Use

    SciTech Connect (OSTI)

    Davis, S.C.

    2004-05-08T23:59:59.000Z

    The transportation sector includes many subcategories--for example, on-highway, off-highway, and non-highway. Use of fuel for off-highway purposes is not well documented, nor is the number of off-highway vehicles. The number of and fuel usage for on-highway and aviation, marine, and rail categories are much better documented than for off-highway land-based use. Several sources document off-highway fuel use under specific conditions--such as use by application (e.g., recreation) or by fuel type (e.g., gasoline). There is, however, no single source that documents the total fuel used off-highway and the number of vehicles that use the fuel. This report estimates the fuel usage and number of vehicles/equipment for the off-highway category. No new data have been collected nor new models developed to estimate the off-highway data--this study is limited in scope to using data that already exist. In this report, unless they are being quoted from a source that uses different terminology, the terms are used as listed below. (1) ''On-highway/on-road'' includes land-based transport used on the highway system or other paved roadways. (2) ''Off-highway/off-road'' includes land-based transport not using the highway system or other paved roadways. (3) ''Non-highway/non-road'' includes other modes not traveling on highways such as aviation, marine, and rail. It should be noted that the term ''transportation'' as used in this study is not typical. Generally, ''transportation'' is understood to mean the movement of people or goods from one point to another. Some of the off-highway equipment included in this study doesn't transport either people or goods, but it has utility in movement (e.g., a forklift or a lawn mower). Along these lines, a chain saw also has utility in movement, but it cannot transport itself (i.e., it must be carried) because it does not have wheels. Therefore, to estimate the transportation-related fuel used off-highway, transportation equipment is defined to include all devices that have wheels, can move or be moved from one point to another, and use fuel. An attempt has been made to exclude off-highway engines that do not meet all three of these criteria (e.g., chain saws and generators). The following approach was used to determine the current off-highway fuel use. First, a literature review was conducted to ensure that all sources with appropriate information would be considered. Secondly, the fuel use data available from each source were compiled and compared in so far as possible. Comparable data sets (i.e., same fuel type; same application) were evaluated. Finally, appropriate data sets were combined to provide a final tally.

  15. 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

  16. Dutch Wholesale Company Highway 57 North Elnora, IN 47529

    E-Print Network [OSTI]

    2011 Dutch Wholesale Company Highway 57 North · Elnora, IN 47529 TOLL FREE: (800) 472-9178 · FAX States only. J enclosed is a check payable to Dutch Wholesale Company J J please send payment with your! Thank You! Dutch Wholesale Company Highway 57 North Elnora, IN 47529 Phone: (800) 472-9178 Fax: (812

  17. Paying the Toll: A Political History of the Golden Gate Bridge and Highway District, 1923-1971

    E-Print Network [OSTI]

    Dyble, Amy Louise Nelson

    2003-01-01T23:59:59.000Z

    Final Environmental Statement Golden Gate Bridge, HighwayGolden Gate Bridge Highway and Transportation District, Draft Environmental

  18. Evaluating the Interstate Highway Transportation System in West Africa: Recommendations for an Integrated Highway Network

    E-Print Network [OSTI]

    Nyang, Lamin Bumi

    2010-12-17T23:59:59.000Z

    facilitate development and spur economic growth in the West African region by attracting foreign investors, residential, commercial, and industrial development along its corridor. With an integrated interstate highway system in West Africa, it is expected... infrastructure so that it becomes the catalyst for Africas growth. The regionally integrated corridor approach offers prospects for speedier integration of infrastructure systems in Africa. The vision and ultimate objective for Africa should be to create a...

  19. Ground potential rise monitor

    DOE Patents [OSTI]

    Allen, Zachery W. (Mandan, ND); Zevenbergen, Gary A. (Arvada, CO)

    2012-04-03T23:59:59.000Z

    A device and method for detecting ground potential rise (GPR) comprising positioning a first electrode and a second electrode at a distance from each other into the earth. The voltage of the first electrode and second electrode is attenuated by an attenuation factor creating an attenuated voltage. The true RMS voltage of the attenuated voltage is determined creating an attenuated true RMS voltage. The attenuated true RMS voltage is then multiplied by the attenuation factor creating a calculated true RMS voltage. If the calculated true RMS voltage is greater than a first predetermined voltage threshold, a first alarm is enabled at a local location. If user input is received at a remote location acknowledging the first alarm, a first alarm acknowledgment signal is transmitted. The first alarm acknowledgment signal is then received at which time the first alarm is disabled.

  20. Sea Level Rise Media Release

    E-Print Network [OSTI]

    Hu, Aixue

    Sea Level Rise Media Release Coverage Report 07/06/2009 Melting Ice Could Lead to Massive Waves 06/11/2009 Rising sea levels could see U.S. Atlantic coast cities make hard choices; Where to let Baltimore Chronicle & Sentinel, The 06/08/2009 Rapid rise in sea levels on East Coast predicted Pittsburgh

  1. Airborne Traffic Surveillance Systems Video Surveillance of Highway Traffic

    E-Print Network [OSTI]

    Latchman, Haniph A.

    from ground up, using unmanned aerial vehicles, digital video encoding, and transmission of data on towers along the highways, or through manned or unmanned aircraft. The problem with having cameras

  2. Microsoft Word - Old Highway Bridge_CX Memo_20120608.docx

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

    Old Highway Bridge Property Funding Fish and Wildlife Project No.: 2009-003-00 Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): B1.25 Transfer, lease,...

  3. Driver comprehension of railroad-highway grade crossings

    E-Print Network [OSTI]

    Messick, Jennifer

    1995-01-01T23:59:59.000Z

    Over the past twenty years, over $2 billion has been allocated for the improvement of railroad-highway grade crossings. Many passive crossings have been upgraded with active protection which has decreased the number of collisions at grade crossings...

  4. A knowledge based approach to preliminary highway bridge design

    E-Print Network [OSTI]

    Woodward, Richard Dean

    1995-01-01T23:59:59.000Z

    focuses on the development of a knowledged based system which would help to guide the inexperienced engineer to a preliminary design configuration for highway bridges. The knowledge based system developed in this study focuses on the preliminary design...

  5. Alternative highway sign alphabet styles for older drivers

    E-Print Network [OSTI]

    Tan, Carol Hannah

    1991-01-01T23:59:59.000Z

    ALTERNATIVE HIGHWAY SIGN ALPHABET STYLES FOR OLDER DRIVERS A Thesis by Carol Hannah Tan Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May... (Member) Jame T. . Yao (Head of partment) May 1991 ABSTRACT Alternative Highway Sign Alphabet Styles for Older Drivers. (May 1991) Carol Hannah Tan, B. S. , Texas A8 M University Chair of Advisory Committee: Dr. Daniel B. Farnbro In the United...

  6. Activity of polymerized trichloroacetic acid for highway vegetation control

    E-Print Network [OSTI]

    Wiedenfeld, R. P

    1974-01-01T23:59:59.000Z

    Mem r ember Play 1/74 ABSTRACT Activity of Polymer- zed Trichloroacetic Acid for Highway Vegetation Control. (May 1/74) Hobert Phillip Wieaenfeld, B. S. , California State University, Humboldt Chairman of Advisory Committee: Dr. Wayne G. Mc... applied to highway roadsides near Fort Worth, Lufkin and Yoakum, Texas in the spring of 1g'7$. Two polymerizing activates which differed in their solubility were used. TCA polymerized with the more soluble activate and applied at a rate of '3 lbs...

  7. Evaluation of the Highway Safety Manual Crash Prediction Model for Rural Two-Lane Highway Segments in Kansas

    E-Print Network [OSTI]

    Lubliner, Howard

    2011-12-31T23:59:59.000Z

    for states other than those the model was developed for. To address this gap the Kansas Department of Transportation (KDOT) commissioned this study to analyze both the accuracy and the practicality of using these crash prediction models on Kansas highways...

  8. Off-Highway Gasoline Consuption Estimation Models Used in the Federal Highway Administration Attribution Process: 2008 Updates

    SciTech Connect (OSTI)

    Hwang, Ho-Ling [ORNL; Davis, Stacy Cagle [ORNL

    2009-12-01T23:59:59.000Z

    This report is designed to document the analysis process and estimation models currently used by the Federal Highway Administration (FHWA) to estimate the off-highway gasoline consumption and public sector fuel consumption. An overview of the entire FHWA attribution process is provided along with specifics related to the latest update (2008) on the Off-Highway Gasoline Use Model and the Public Use of Gasoline Model. The Off-Highway Gasoline Use Model is made up of five individual modules, one for each of the off-highway categories: agricultural, industrial and commercial, construction, aviation, and marine. This 2008 update of the off-highway models was the second major update (the first model update was conducted during 2002-2003) after they were originally developed in mid-1990. The agricultural model methodology, specifically, underwent a significant revision because of changes in data availability since 2003. Some revision to the model was necessary due to removal of certain data elements used in the original estimation method. The revised agricultural model also made use of some newly available information, published by the data source agency in recent years. The other model methodologies were not drastically changed, though many data elements were updated to improve the accuracy of these models. Note that components in the Public Use of Gasoline Model were not updated in 2008. A major challenge in updating estimation methods applied by the public-use model is that they would have to rely on significant new data collection efforts. In addition, due to resource limitation, several components of the models (both off-highway and public-us models) that utilized regression modeling approaches were not recalibrated under the 2008 study. An investigation of the Environmental Protection Agency's NONROAD2005 model was also carried out under the 2008 model update. Results generated from the NONROAD2005 model were analyzed, examined, and compared, to the extent that is possible on the overall totals, to the current FHWA estimates. Because NONROAD2005 model was designed for emission estimation purposes (i.e., not for measuring fuel consumption), it covers different equipment populations from those the FHWA models were based on. Thus, a direct comparison generally was not possible in most sectors. As a result, NONROAD2005 data were not used in the 2008 update of the FHWA off-highway models. The quality of fuel use estimates directly affect the data quality in many tables published in the Highway Statistics. Although updates have been made to the Off-Highway Gasoline Use Model and the Public Use Gasoline Model, some challenges remain due to aging model equations and discontinuation of data sources.

  9. Development Impacts of high-speed rail : megalopolis formation and implications for Portugal's Lisbon-Porto High-Speed Rail Link

    E-Print Network [OSTI]

    Melibaeva, Sevara (Sevara Mukhtarovna)

    2010-01-01T23:59:59.000Z

    High-speed rail (HSR) has been gaining acceptance worldwide with development of rail technology and rising concerns over climate change and congestion in airports and on roads. The implementation of high-speed rail lines ...

  10. Highway Car Traffic as a Complex System: The Physicist's Point of View

    SciTech Connect (OSTI)

    Boccara, Nino (University of Illinois at Chicago) [University of Illinois at Chicago

    2005-04-20T23:59:59.000Z

    A simple cellular automaton model of highway car traffic flow will be presented. This system exhibits a second-order phase transition between the free-moving phase and the jammed phase. Using concepts borrowed from the theory of phase transitions in statistical physics, it can be shown that random braking is the symmetry-breaking field conjugate to the order parameter. For a given value of the speed limit, it is then possible to determine the values of the usual critical exponents using computer simulations. These numerical results can also be obtained within the framework of an approximate technique going beyond the mean-field approximation. It can be shown that the critical exponents satisfy a scaling relation, which can be derived assuming that the order parameter is a generalized homogeneous function in the vicinity of the phase transition point.

  11. CE 467 / 567 HIGHWAY SAFETY AND OPERATIONS Fall 2006 Course Syllabus

    E-Print Network [OSTI]

    Hickman, Mark

    1 CE 467 / 567 HIGHWAY SAFETY AND OPERATIONS Fall 2006 Course Syllabus Catalog This course of class) #12;2 CE 467 / 567 HIGHWAY SAFETY AND OPERATIONS Fall 2006 Course Syllabus Course Outline: What

  12. Paying the Toll: A Political History of the Golden Gate Bridge and Highway District, 1923-1971

    E-Print Network [OSTI]

    Dyble, Amy Louise Nelson

    2003-01-01T23:59:59.000Z

    Gate: the Construction of the Golden Gate Bridge and HighwayCommittee on Golden Gate Bridge and Highway District,versus the Golden Gate Bridge . . . . . . . . . . . . . . .

  13. A microsimulation analysis of highway intersections near highway-railroad grade crossings

    E-Print Network [OSTI]

    Tydlacka, Jonathan Michael

    2004-11-15T23:59:59.000Z

    . This research focused on three specific areas. First, average vehicle delay was examined, and this delay was compared for seven specific train speed distributions, including existing conditions. Furthermore, each distribution was associated with train...

  14. Air, High Speed Rail, or Highway: A Cost Comparison in the California Corridor

    E-Print Network [OSTI]

    Levinson, David M.

    these reduced social costs offset rail's high capital and operating costs. The development of cost estimates, any of these three modes. In this study we include estimates of four types of external, social costs design characteristics observed in the California corridor. We estimate rail costs with models adapted

  15. Tradeoffs among Free-flow Speed, Capacity, Cost, and Environmental Footprint in Highway Design

    E-Print Network [OSTI]

    Ng, Chen Feng; Small, Kenneth

    2011-01-01T23:59:59.000Z

    heavy vehicles (a car has 1 pce). Our calculations are basedequivalents per hour per lane (pce/h/ln) and is used laterfunction of the flow rate v p (pce/h/ln). We consider free-

  16. Safety effects of barrier curb on high-speed suburban multilane highways

    E-Print Network [OSTI]

    Lienau, Krista Ann

    2012-06-07T23:59:59.000Z

    Intersection Related 39 46 49 53 56 57 59 61 63 V CONCLUSIONS AND RECOMMENDATIONS 65 Conclusions Recommendations 65 67 REFERENCES APPENDIX A APPENDIX B APPENDIX C 69 71 78 91 VITA LIST OF FIGURES FIGURE 1 Difference in Accident Rates... LIST OF TABLES TABLE 1 Geometric Attributes of Texas Study Sites Page 22 2 Geometric Attributes of Illinois Curbed Study Sites 24 3 Geometric Attributes of Illinois Non-Curbed Study Sites 25 4 Accident Types Studied 29 5 Driveway Density Levels...

  17. Tradeoffs among Free-flow Speed, Capacity, Cost, and Environmental Footprint in Highway Design

    E-Print Network [OSTI]

    Ng, Chen Feng; Small, Kenneth

    2011-01-01T23:59:59.000Z

    in accident rates over a ten-mile section would imply ansocial costs for a ten-mile expressway section would then be

  18. Electric Urban Motorcycle: The design of a A1 class electric motorcycle, reaching highway speeds:.

    E-Print Network [OSTI]

    Rotteveel, K.

    2014-01-01T23:59:59.000Z

    ??This master thesis Electric Urban Motorcycle, shows the development of the next generation light motorcycle for Qwic. The assignment was performed by student Kars Rotteveel (more)

  19. Highway Traffic Noise Analysis and Abatement Guidelines The purpose of this project is to

    E-Print Network [OSTI]

    Prevedouros, Panos D.

    Highway Traffic Noise Analysis and Abatement Guidelines The purpose of this project is to: (1 AND ABATEMENT GUIDELINE. HDOT's 1997 noise policy has to be reviewed and updated in order to allow for relief or Federal-Aid highway projects to construct traffic noise abatement measures on existing highways

  20. Rise Time Measurement for Ultrafast X-Ray Pulses

    DOE Patents [OSTI]

    Celliers, Peter M.; Weber, Franz A.; Moon, Stephen J.

    2005-04-05T23:59:59.000Z

    A pump-probe scheme measures the rise time of ultrafast x-ray pulses. Conventional high speed x-ray diagnostics (x-ray streak cameras, PIN diodes, diamond PCD devices) do not provide sufficient time resolution to resolve rise times of x-ray pulses on the order of 50 fs or less as they are being produced by modern fast x-ray sources. Here, we are describing a pump-probe technique that can be employed to measure events where detector resolution is insufficient to resolve the event. The scheme utilizes a diamond plate as an x-ray transducer and a p-polarized probe beam.

  1. Rise time measurement for ultrafast X-ray pulses

    DOE Patents [OSTI]

    Celliers, Peter M. (Berkeley, CA); Weber, Franz A. (Oakland, CA); Moon, Stephen J. (Tracy, CA)

    2005-04-05T23:59:59.000Z

    A pump-probe scheme measures the rise time of ultrafast x-ray pulses. Conventional high speed x-ray diagnostics (x-ray streak cameras, PIN diodes, diamond PCD devices) do not provide sufficient time resolution to resolve rise times of x-ray pulses on the order of 50 fs or less as they are being produced by modern fast x-ray sources. Here, we are describing a pump-probe technique that can be employed to measure events where detector resolution is insufficient to resolve the event. The scheme utilizes a diamond plate as an x-ray transducer and a p-polarized probe beam.

  2. Scheduling of Connected Autonomous Vehicles on Highway Lanes

    E-Print Network [OSTI]

    Scheduling of Connected Autonomous Vehicles on Highway Lanes Jiajun Hu, Linghe Kong, Wei Shu}@sjtu.edu.cn + University of New Mexico, USA, shu@ece.unm.edu Abstract--With recent progress in vehicle autonomous driving autonomous sys- tems. This paper studies lane assignment strategies for connected autonomous vehicles

  3. Alternative energy sources for non-highway transportation. Appendices

    SciTech Connect (OSTI)

    Not Available

    1980-06-01T23:59:59.000Z

    A planning study was made for DOE on alternate fuels for non-highway transportation (aircraft, rail, marine, and pipeline). The study provides DOE with a recommendation of what alternate fuels may be of interest to non-highway transportation users from now through 2025 and recommends R and D needed to allow non-petroleum derived fuels to be used in non-highway transportation. Volume III contains all of the references for the data used in the preliminary screening and is presented in 4 subvolumes. Volume IIIA covers the background information on the various prime movers used in the non-highway transportation area, the physical property data, the fuel-prime mover interaction and a review of some alternate energy forms. Volume IIIB covers the economics of producing, tranporting, and distributing the various fuels. Volume IIIC is concerned with the environment issues in production and use of the fuels, the energy efficiency in use and production, the fuel logistics considerations, and the overall ratings and selection of the fuels and prime movers for the detailed evaluation. Volume IIID covers the demand-related issues.

  4. MULTI-HAZARD RESISTANT HIGHWAY BRIDGE PIERS HAVING

    E-Print Network [OSTI]

    Bruneau, Michel

    of California to its main suspension bridges and the detailed shots of the Golden Gate and Brooklyn bridgesMULTI-HAZARD RESISTANT HIGHWAY BRIDGE PIERS HAVING CONCRETE-FILLED STEEL TUBE Shuichi FUJIKURA1 of a multi-hazard bridge pier concept, i.e., a bridge pier system capable of providing an adequate level

  5. Vehicle Following Control Design for Automated Highway Systems

    E-Print Network [OSTI]

    Ioannou, Petros

    Vehicle Following Control Design for Automated Highway Systems H. Raza and P. Ioannou A, utomatic vehicle following isan important feature of a fully rpartially automated highwaysystem (AHS is todesign and test avehicle control system in order toachieve full vehicle automation in the longitudinal

  6. Motor Vehicle Administration 6601 Ritchie Highway, N.E.

    E-Print Network [OSTI]

    Miami, University of

    Motor Vehicle Administration 6601 Ritchie Highway, N.E. Glen Burnie, Maryland 21062 For more-Owner's Signature Vehicle Information Year Make Sticker No. Title No. Tag No. Vehicle Identification Number Car Multi-purpose vehicle Truck 1 ton or less Motorcycle Fees: Non Logo Organizational Tags: $15

  7. ORNL/TM-2003/210 THE FEDERAL HIGHWAY ADMINISTRATION

    E-Print Network [OSTI]

    ORNL/TM-2003/210 THE FEDERAL HIGHWAY ADMINISTRATION GASOHOL CONSUMPTION ESTIMATION MODEL August January 1, 1996, are generally available free via the U.S. Department of Energy (DOE) Information Bridge by members of the public from the following source. National Technical Information Service 5285 Port Royal

  8. CHARACTERIZING UNCERTAIN SEA LEVEL RISE PROJECTIONS TO

    E-Print Network [OSTI]

    CHARACTERIZING UNCERTAIN SEA LEVEL RISE PROJECTIONS TO SUPPORT INVESTMENT DECISIONS Many institutions worldwide are considering how to include expectations about future sea level rise sea level rise in its investment plans? Such extreme events--for instance, increased storm frequency

  9. A safety program design for state highway departments

    E-Print Network [OSTI]

    Hudlow, Chester Dow

    1973-01-01T23:59:59.000Z

    Specialists Safety Library VI. RECORDS AND STATISTICS Status of Recordkeeping Fleet Safety Fleet Safety Program 62 62 66 66 68 69 69 70 70 Chapter Accident Records Quantitative Evaluation of Performance Recommended Quantitative Method... prevention effort I 16) . In order to fully evaluate the safety situation of the State Highway Departments some parameter was needed as to the Departments' organizational 18 Table 1 Features of Safety Program Components 1. SAFETY ORGANIZATION...

  10. Checklist for transition to new highway fuel(s).

    SciTech Connect (OSTI)

    Risch, C.; Santini, D.J. (Energy Systems)

    2011-12-15T23:59:59.000Z

    Transportation is vital to the U.S. economy and society. As such, U.S. Presidents have repeatedly stated that the nation needs to reduce dependence on petroleum, especially for the highway transportation sector. Throughout history, highway transportation fuel transitions have been completed successfully both in United States and abroad. Other attempts have failed, as described in Appendix A: Historical Highway Fuel Transitions. Planning for a transition is critical because the changes can affect our nation's ability to compete in the world market. A transition will take many years to complete. While it is tempting to make quick decisions about the new fuel(s) of choice, it is preferable and necessary to analyze all the pertinent criteria to ensure that correct decisions are made. Doing so will reduce the number of changes in highway fuel(s). Obviously, changes may become necessary because of occurrences such as significant technology breakthroughs or major world events. With any and all of the possible transitions to new fuel(s), the total replacement of gasoline and diesel fuels is not expected. These conventional fuels are envisioned to coexist with the new fuel(s) for decades, while the revised fuel and vehicle infrastructures are implemented. The transition process must analyze the needs of the primary 'players,' which consist of the customers, the government, the fuel industry, and the automotive industry. To maximize the probability of future successes, the prime considerations of these groups must be addressed. Section 2 presents a succinct outline of the Checklist. Section 3 provides a brief discussion about the groupings on the Checklist.

  11. Simulations of highway traffic with various degrees of automation

    SciTech Connect (OSTI)

    Doss, E.; Hanebutte, U.; Vitela, J.; Brown-VanHoozer, A.; Ewing, T.; Tentner, A.

    1996-10-01T23:59:59.000Z

    A traffic simulator to study highway traffic under various degrees of automation is being developed at Argonne National Laboratory (ANL). The key components of this simulator include a global and a local Expert Drive Mode, a human factor study and a graphical user interface. Further, an Autonomous Intelligent Cruise Control (AICC) which is based on a neural network controller is described and results for a typical driving scenario are given.

  12. Simulation of vehicle traffic on an automatic highway system.

    SciTech Connect (OSTI)

    Hanebutte, U.; Doss, E.; Ewing, T.; Tentner, A.; Technology Development

    1998-01-01T23:59:59.000Z

    A traffic simulator has been developed at Argonne National Laboratory to study highway traffic under various degrees of automation. The key components of this simulator include a global and a local Expert Driver Model, a human factor study, and a graphical user interface. Furthermore, an Autonomous Intelligent Cruise Control, which is based on a neural network controller, is described and results for two typical driving scenarios are given.

  13. Methods of right-of-way acquisition used by the Texas Highway Department

    E-Print Network [OSTI]

    Lowry, Paul Russell

    1959-01-01T23:59:59.000Z

    OF APPRAISERS. XXII. WHEN SHOULD APPRAISAL FEES BE PAID FOR CONPLETED vi Page 48 56 57 57 vii LIST OP FIGURES FIGURE 1. TEXAS HIGHWAY DEPARTHNHT Right-of-Way Division Organization Chart 2. Right-of-Way Acquisition HIGHWAY DEPAETNEHT AND OTHER... of appraisal after assignsmnt. 3. The desirability of the various means of assigning parcels of appraisal ~ 4. The adequacy of msp and other inforsmtion provided the appraiser by the Texas Highway Department. 5. The adequacy of fees paid to appraisers...

  14. Visual complexity in highway work zones: an exploratory study

    E-Print Network [OSTI]

    Helmuth, Jaime Leigh

    2012-06-07T23:59:59.000Z

    Speed Profile FIGURE 34 Site 4 Day Speed Profile. FIGURE 35 Site 4 Night Speed Profile . . 54 54 55 . . . . 57 . . . . 58 60 . 62 . 63 . 64 . 151 152 . 153 . 154 . 155 . 156 . 157 FIGURE 36 Site 5 Day Speed Profile. FIGURE 37 Site 5... for North of Dallas (Southbound/Night) . . . . . . . . . 148 TABLE 47 Catalog of Signs 168 INTRODUCTION Problem Statement This research was part of a Texas Transportation Institute (TTI) project that was conducted for the Texas Department...

  15. Effectiveness of speed trailers on low-speed urban roadways

    E-Print Network [OSTI]

    Perrillo, Kerry Victoria

    1997-01-01T23:59:59.000Z

    Efforts are being made to use speed management methods to match operating speeds to posted speeds and to reduce the variability in vehicle speeds. The effectiveness of many different methods of speed management has not been documented. This thesis...

  16. Fact #634: August 2, 2010 Off-highway Transportation-related...

    Energy Savers [EERE]

    graph showing the 2008 off-highway transportation-related fuel consumption including gasoline, diesel, CNG, and LPG for the following areas: railroad maintenance; airport ground;...

  17. Development and Demonstration of a Fuel-Efficient Class 8 Highway...

    Energy Savers [EERE]

    and Demonstration of a Fuel-Efficient Class 8 Highway Vehicle 2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation...

  18. Development and Demonstration of a Fuel-Efficient Class 8 Highway...

    Energy Savers [EERE]

    and Demonstration of a Fuel-Efficient Class 8 Highway Vehicle 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation...

  19. Some factors affecting the location of controlled access highways

    E-Print Network [OSTI]

    Case, Henry Orlando

    1952-01-01T23:59:59.000Z

    ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ VI BIBLIC(I44 ifT ~ ~ ~ ~ ~ ~ 4 ~ ~ ~ ~ t ~ ~ ~ ~ ~ ~ t ~ ~ ~ 1 Aversion of Traffic Prom City Ctroets to essay Iased on Comparative Travel Ties . ~ ~ ~ 2 ?~ted Produotion of llew Passenger Cars and 'ioommGated gumber of Cars wrapped... and highways to which each citissn ~ property abutting the thoroughfare has full right of ingress and egress at his ccmvenience. If the travel is light and the property holdings large ths need to exercise the right of ingress and egress is small, and little...

  20. MOBILE HIGHWAY INVENTORY AND MEASUREMENT SYSTEM Norbert H. Maerz, University of Missouri-Rolla, 1006 Kingshighway, Rolla MO, 65409-0660, USA. Tel

    E-Print Network [OSTI]

    Maerz, Norbert H.

    Surveyor® : MOBILE HIGHWAY INVENTORY AND MEASUREMENT SYSTEM Norbert H. Maerz, University classified inventories annotated with object dimensions, object position relative to the road, and global collection, Highway measurements, Instrumented vehicle, Highway inventory management, Infrastructure

  1. The rise of "china threat" arguments

    E-Print Network [OSTI]

    Ueki, Chikako

    2006-01-01T23:59:59.000Z

    The study seeks to explain the rise of "China threat" arguments in the United States and Japan in the 1990s by using three theories of states behavior- realism, organization theory, and democratic peace theory. The rise ...

  2. Using LIDAR in Highway Rock Cuts Norbert H. Maerz, Ph. D., P. Eng,

    E-Print Network [OSTI]

    Maerz, Norbert H.

    the data needed to begin the process of modeling the rock raveling process. INTRODUCTION LIDAR damage, injury, and even death. Highways impeded by even small spills of rock material by blasting techniques to facilitate the highway construction. A constant danger to the motoring public

  3. A New Cost-Benefit Methodology for Highway-Railway Grade Crossing Safety

    E-Print Network [OSTI]

    Illinois at Urbana-Champaign, University of

    visible at the time of the crash) ­ Injury and Fatality cost; ­ Highway vehicle damage; ­ Rail prior to impact and was not injured. Engineer advised after striking vehicle fumes from the radiatorA New Cost-Benefit Methodology for Highway-Railway Grade Crossing Safety Programs GLX-2014 Ali

  4. 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

  5. Impact of Communication Erasure Channels on Safety of Highway Vehicle Platoons

    E-Print Network [OSTI]

    Zhang, Hongwei

    such an impact. By autonomous inter-vehicle coordination, a platoon can potentially enhance safety, improve1 Impact of Communication Erasure Channels on Safety of Highway Vehicle Platoons Lijian Xu, Member perfor- mance significantly. This paper employs safety of highway vehicle platoons as a platform to study

  6. J Syst Sci Complex (20XX) XX: 128 Control of Vehicle Platoons for Highway Safety and

    E-Print Network [OSTI]

    Zhang, Hongwei

    utility, increased fuel economy, and reduced emission toward autonomous or semi- autonomous vehicle foundation for autonomous or semi- autonomous vehicle control for enhanced safety, improved highway utilityJ Syst Sci Complex (20XX) XX: 128 Control of Vehicle Platoons for Highway Safety and Efficient

  7. Communication Information Structures and Contents for Enhanced Safety of Highway Vehicle

    E-Print Network [OSTI]

    Zhang, Hongwei

    in developing intelligent transporta- tion systems. By autonomous or semi-autonomous vehicle con- trol and inter-vehicle, autonomous vehicles. I. INTRODUCTION Highway platooning of vehicles has been identified as a promising1 Communication Information Structures and Contents for Enhanced Safety of Highway Vehicle Platoons

  8. The Impact of Fuel Use Trends on the Highway Trust Fund's Present and Future

    E-Print Network [OSTI]

    Lewis, Robert Michael

    1 The Impact of Fuel Use Trends on the Highway Trust Fund's Present and Future Devin;2 The Impact of Fuel Use Trends on the Highway Trust Fund's Present and Future Devin Braun Ryan Endorf Stephen.3. Historical and Projected Fuel Use and Vehicle Miles Traveled Trends Section 2. Methodology Section 2

  9. 3D Engineered Models for Highway Construction Gabe Nelson, P.E.

    E-Print Network [OSTI]

    3D Engineered Models for Highway Construction Gabe Nelson, P.E. Snyder & Associates, Inc. Overview of 3D Engineered Models for Highway Construction Module 1 Introduction #12;3D Engineered Models & Quality ­ Protect the Environment · Every Day Counts 2 included 3D Engineered Models for Construction

  10. Updating Maryland's Sea-level Rise

    E-Print Network [OSTI]

    Ezer,Tal

    Updating Maryland's Sea-level Rise Projections Scientific and Technical Working Group Maryland Climate Change Commission June 26, 2013 #12;Sea-level Rise Expert Group Donald F. Boesch* , University-author of the National Assessment Scenarios report Author of paper(s) on recent sea-level rise ~ Author contributing

  11. The effect of restricted highway facilities on traffic operations

    E-Print Network [OSTI]

    Cloninger, Kriss

    1953-01-01T23:59:59.000Z

    ~ ~ ~ ~ 73 ~ ~ ~ ~ . ~ ~ . 74 LIST OF TABLES Table l. iflotor Vehicle degistrations in The 'Jnited States 2. Analysis of Traf. ic Data 3. Frequency Distribution of Vehicle Speeds at Open Site Number 2 4. Frequency Distribution of Vehicle Time... Recording Tace ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ . 25 . 26 . 31 15. Comparison of Vehicle Speeds At Open Site Number 1 And Restricted Site Number 1 . 42 16. Comparison cf Vehicle Speeds At Ooen Site Number 1 And Restricted Site Number 1 . 43 17...

  12. Counting Rises, Levels and Drops in Compositions 1 Counting Rises, Levels and

    E-Print Network [OSTI]

    Heubach, Silvia

    Counting Rises, Levels and Drops in Compositions 1 Counting Rises, Levels and Drops in Compositions Mansour Department of Mathematics, Haifa University, Israel #12;Counting Rises, Levels and Drops;Counting Rises, Levels and Drops in Compositions 3 Definitions · A composition = 12 . . . m of n N

  13. Incorporating Vehicle Emission Models into the Highway Design Process

    E-Print Network [OSTI]

    Ko, Myung-Hoon

    2012-02-14T23:59:59.000Z

    simulator (MOVES). The generated speed profiles were matched with the extracted rates and aggregated during a trip on the grades and curves. In addition, the researcher conducted the environmental evaluation including a benefit-cost analysis with actual...

  14. Predicting violations at gated active highway-railroad grade crossings

    E-Print Network [OSTI]

    Bean, Jonathan Alan

    1997-01-01T23:59:59.000Z

    -railroad grade crossing. It also was recommended that constant warning time devices be used whenever feasible with priority given to crossings with multiple tracks and/or average train speeds below 35 km/hr....

  15. Estimation of economic impact of freight distribution due to highway closure

    E-Print Network [OSTI]

    Hu, Shiyin

    2008-01-01T23:59:59.000Z

    The main aim of this study is to provide a theoretical framework and methodology to estimate and analyze the economic impact of freight disruption due to highway closure. The costs in this study will be classified into ...

  16. Creating sustainable air rights development over highway corridors : lessons from the Massachusetts Turnpike in Boston

    E-Print Network [OSTI]

    Campbell, Bonnie E., 1977-

    2004-01-01T23:59:59.000Z

    Research and practice have shown that air rights development over highway corridors in America's cities is not only feasible, but desirable. As planners, policy makers and consumers attempt to curb the sprawling development ...

  17. Restructuring The Automobile/highway System For Lean Vehicles: The Scaled Precedence Activity Network (SPAN) Approach

    E-Print Network [OSTI]

    Pitstick, Mark E.; Garrison, William L.

    1991-01-01T23:59:59.000Z

    shared with conventional automobiles and trucks (on a 2 to 119791. Man and the Automobile. New York: McGraw-Hill. Jones,AT BERKELEY Restructuring the Automobile/Highway System for

  18. E-Print Network 3.0 - area highway networks Sample Search Results

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

    E. Ycesan, eds. Summary: . Hugan, and E. Ycesan, eds. HIGHWAY MOBILITY AND VEHICULAR AD-HOC NETWORKS IN NS-3 Hadi Arbabi Michele C... of vehicular ad-hoc networks (VANETs)...

  19. Lateral control of articulated vehicles for automated highway systems under uncertainty in vehicle parameters

    E-Print Network [OSTI]

    Daud, Omar

    1998-01-01T23:59:59.000Z

    Studied in this thesis is the formulation of lateral control algorithms for articulated vehicles performing a lane following maneuver on Automated Highway Systems (AHS). A steering control algorithm using the input/output linearization scheme...

  20. A hotel economic feasibility study : Monsignor O'Brien Highway, Cambridge, Massachusetts

    E-Print Network [OSTI]

    Rogers, Mark P. (Mark Paul)

    2007-01-01T23:59:59.000Z

    A hotel economic feasibility study was carried out for an assemblage of four (4) parcels located on Monsignor O'Brien Highway in Cambridge, Massachusetts. The primary objective of this economic feasibility study was to ...

  1. Newfound land : urban highway removal and planning the land it uncovers

    E-Print Network [OSTI]

    Masenten, David J. (David Joel), 1974-

    2004-01-01T23:59:59.000Z

    When the interstate highway system was routed through urban centers during the 1950's and 1960's, few thought these elevated expressways would have a serious detrimental impact on the cities they served. These interstates ...

  2. Identification of potential strategies, methods, and tools for improving cost estimating practices for highway projects

    E-Print Network [OSTI]

    Donnell, Kelly Elaine

    2005-08-29T23:59:59.000Z

    Project cost escalation is a major problem for State Highway Agencies (SHA). This problem is evident in cost estimating procedures that may not promote consistency and accuracy of costs over the project development process. The research proposes...

  3. Relating geometric design consistency and accident experience on two-lane rural highways

    E-Print Network [OSTI]

    Glascock, Stephen Wade

    1991-01-01T23:59:59.000Z

    RELATING GEOMETRIC DESIGN CONSISTENCY AND ACCIDENT EXPERIENCE ON TWO-LANE RURAL HIGHWAYS A Thesis by STEPHEN WADE GLASCOCK Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE May 1991 Major Subject: Civil Engineering RELATING GEOMETRIC DESIGN CONSISTENCY AND ACCIDENT EXPERIENCE ON TWO-LANE RURAL HIGHWAYS A Thesis by STEPHEN WADE GLASCOCK Approved as to style and content by: aymond A...

  4. Balancing of high speed, flexible rotating shafts across critical speeds

    E-Print Network [OSTI]

    White, Gary Paul

    1977-01-01T23:59:59.000Z

    this is equivalent to eliminating certain sen- sors. Once the influence coefficient matrix is square, the solution procedure is exactly that of the single speed case. The computed balance weights should now null the rotor vibration at the sensor ports which were... critical speed, The Sin- gle Speed and the Exact Point-Speed techniques were determined to be relatively ineffective over this speed range; however, the Least Squares procedure yields a dramatic decrease in rotor vibration over the entire speed range...

  5. Combination of Speed Stroke Grinding and High Speed Grinding with Regard to Sustainability

    E-Print Network [OSTI]

    Linke, Barbara; M. Duscha; F. Klocke; Dornfeld, David

    2011-01-01T23:59:59.000Z

    Combination of Speed Stroke Grinding and High Speed Grindinghow the combination of speed stroke grinding and high speed4] Inasaki, I. , 1988, Speed Stroke Grinding of Advanced

  6. High speed door assembly

    DOE Patents [OSTI]

    Shapiro, C.

    1993-04-27T23:59:59.000Z

    A high speed door assembly is described, comprising an actuator cylinder and piston rods, a pressure supply cylinder and fittings, an electrically detonated explosive bolt, a honeycomb structured door, a honeycomb structured decelerator, and a structural steel frame encasing the assembly to close over a 3 foot diameter opening within 50 milliseconds of actuation, to contain hazardous materials and vapors within a test fixture.

  7. High speed door assembly

    DOE Patents [OSTI]

    Shapiro, Carolyn (Idaho Falls, ID)

    1993-01-01T23:59:59.000Z

    A high speed door assembly, comprising an actuator cylinder and piston rods, a pressure supply cylinder and fittings, an electrically detonated explosive bolt, a honeycomb structured door, a honeycomb structured decelerator, and a structural steel frame encasing the assembly to close over a 3 foot diameter opening within 50 milliseconds of actuation, to contain hazardous materials and vapors within a test fixture.

  8. Short rise time intense electron beam generator

    DOE Patents [OSTI]

    Olson, C.L.

    1984-03-16T23:59:59.000Z

    A generator for producing an intense relativisitc electron beam having a subnanosecond current rise time includes a conventional generator of intense relativistic electrons feeding into a short electrically conductive drift tube including a cavity containing a working gas at a low enough pressure to prevent the input beam from significantly ionizing the working gas. Ionizing means such as a laser simultaneously ionize the entire volume of working gas in the cavity to generate an output beam having a rise time less than one nanosecond.

  9. Highway Geology Symposium Santa Fe, 2008 HGS Session 5 -Paper 5.2 Page 1 of 21

    E-Print Network [OSTI]

    Haneberg, William C.

    59th Highway Geology Symposium Santa Fe, 2008 HGS Session 5 - Paper 5.2 Page 1 of 21 59 TH HIGHWAY GEOLOGY SYMPOSIUM 2008 Santa Fe, New Mexico SESSION 5 PAPER #5.2 REVISITING AN OLD PROJECT WITH NEW TECHNOLOGY-- DIGITAL TERRAIN MODELING AND MULTI-LAYERED VIRTUAL GEOLOGIC HAZARD MAPPING ALONG A PROPOSED

  10. RISING ECONOMIC INSECURITY AMONG SENIOR SINGLE WOMEN

    E-Print Network [OSTI]

    Snider, Barry B.

    RISING ECONOMIC INSECURITY AMONG SENIOR SINGLE WOMEN Tatjana Meschede Martha Cronin Laura Sullivan paying bills, forgoing home maintenance or medical needs. New research shows that economic insecurity of the Great Recession had been felt--economic insecurity among this population subgroup increased by one

  11. Rise of the Biopsychosocial Model Psychoanalytic Contributions

    E-Print Network [OSTI]

    Meagher, Mary

    Infant and Maternal Mortality #12;Rise of the Biopsychosocial Model Escalating Health Care Costs Factors Patterns of Illness Escalating Health Care Costs Research #12;The Mind-Body Relationship: Psychoanalytic contributing to increased costs: i) Technology ii) Insurance iii) Aging Population iv) Defensive Medicine v

  12. Gas plants, new fields spark production rise

    SciTech Connect (OSTI)

    Lenzini, D.

    1980-04-01T23:59:59.000Z

    Gas plant construction is welcomed by operators in the Williston Basin, North Dakota. Petroleum and gas production has increased. The Montana portion of the Williston Basin shows new discoveries. Some secondary recovery efforts are in operation. Industrial officials share the same enthusiasm and optimism for rising production as they do for exploration potential in the basin. 5 tables.

  13. Paleomagnetism of Igenous Rocks from Shatsky Rise

    E-Print Network [OSTI]

    Pueringer, Margaret

    2013-04-24T23:59:59.000Z

    1349 ..................................................... 94 2.6 Colatitude versus depth for Site U1350 ..................................................... 95 2.7 Colatitude arcs for Shatsky Rise sites compared to Pacific plate paleomagnetic... U1350 displayed directional changes consistent with significant paleosecular variation, but even this section does not completely average out secular variation, implying that the time span was <104-105 years. On the whole, the paleomagnetic data...

  14. High speed door assembly

    SciTech Connect (OSTI)

    Shapiro, C.

    1991-12-31T23:59:59.000Z

    This invention is comprised of a high speed door assembly, comprising an actuator cylinder and piston rods, a pressure supply cylinder and fittings, an electrically detonated explosive bolt, a honeycomb structured door, a honeycomb structured decelerator, and a structural steel frame encasing the assembly to close over a 3 foot diameter opening within 50 milliseconds of actuation, to contain hazardous materials and vapors within a test fixture.

  15. Two-speed transaxle

    DOE Patents [OSTI]

    Kalns, Ilmars (Northville, MI)

    1981-01-01T23:59:59.000Z

    Disclosed is a drive assembly (10) for an electrically powered vehicle (12). The assembly includes a transaxle (16) having a two-speed transmission (40) and a drive axle differential (46) disposed in a unitary housing assembly (38), an oil-cooled prime mover or electric motor (14) for driving the transmission input shaft (42), an adapter assembly (24) for supporting the prime mover on the transaxle housing assembly, and a hydraulic system (172) providing pressurized oil flow for cooling and lubricating the electric motor and transaxle and for operating a clutch (84) and a brake (86) in the transmission to shift between the two-speed ratios of the transmission. The adapter assembly allows the prime mover to be supported in several positions on the transaxle housing. The brake is spring-applied and locks the transmission in its low-speed ratio should the hydraulic system fail. The hydraulic system pump is driven by an electric motor (212) independent of the prime mover and transaxle.

  16. Rising Above the Water: New Orleans Implements Energy Efficiency...

    Energy Savers [EERE]

    Rising Above the Water: New Orleans Implements Energy Efficiency and Sustainability Practices Following Hurricanes Katrina and Rita (Fact Sheet) Rising Above the Water: New Orleans...

  17. Development of Sea Level Rise Scenarios for Climate Change Assessments...

    Open Energy Info (EERE)

    Sea Level Rise Scenarios for Climate Change Assessments of the Mekong Delta, Vietnam Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Development of Sea Level Rise...

  18. 1International High Speed Rail Conference 19642064 High Speed Rail

    E-Print Network [OSTI]

    Birmingham, University of

    1International High Speed Rail Conference 1964­2064 High Speed Rail: Celebrating Ambition 2014 by the Birmingham Centre for Railway Research and Education Conference programme 8 ­10 December 2014 Kindly supported by: #12;2 International High Speed Rail Conference Monday 8 December 12:00 ­ 12:50 Registration

  19. SHEAR STRENGTHENING USING FRJ> SHEETS FOR A HIGHWAY BRIDGE IN MANITOHA, CANADA

    E-Print Network [OSTI]

    SHEAR STRENGTHENING USING FRJ> SHEETS FOR A HIGHWAY BRIDGE IN MANITOHA, CANADA lIutchinson et al trucks demanded upgrading of a twenty-seven year old bridge in Winnipeg, Manitoba, Canada. Analysis, Manitoba, Canada, is considering an upgrading of the Maryland bridge in response to the demand for using

  20. Hybrid 320 Ton Off Highway Haul Truck: Quarterly Technical Status Report 13

    SciTech Connect (OSTI)

    Tim Richter

    2006-03-23T23:59:59.000Z

    This thirteenth quarterly status report for the Hybrid Off Highway Vehicle (OHV) project, DOE Award DE-FC04-02AL68080 presents the project status at the end of December 2005, and covers activities in the thirteenth project quarter, October 2005 ? December 2005.

  1. Hybrid 320 Ton Off Highway Haul Truck: Quarterly Technical Status Report 10

    SciTech Connect (OSTI)

    Tim Richter

    2005-05-05T23:59:59.000Z

    This tenth quarterly status report for the Hybrid Off Highway Vehicle (OHV) project, DOE Award DE-FC04-2002AL68080 presents the project status at the end of March 2005, and covers activities in the tenth project quarter, January-March 2005.

  2. Hybrid 320 Ton Off Highway Haul Truck: Quarterly Technical Status Report 9

    SciTech Connect (OSTI)

    Tim Richter

    2005-03-02T23:59:59.000Z

    This ninth quarterly status report for the Hybrid Off Highway Vehicle (OHV) project, DOE Award DEFC04- 2002AL68080 presents the project status at the end of December 2004, and covers activities in the ninth project quarter, October - December 2004.

  3. Hybrid 240 Ton Off Highway Haul Truck: Quarterly Technical Status Report 18

    SciTech Connect (OSTI)

    Tim Richter

    2007-03-31T23:59:59.000Z

    This eighteenth quarterly status report for the Hybrid Off Highway Vehicle (OHV) project, DOE Award DE-FC04-02AL68080 presents the project status at the end of March 2007, and covers activities in the eighteenth project quarter, January 2007 March 2007.

  4. Evaluation of sight distance as a criterion for prioritizing rail-highway intersections in Texas

    E-Print Network [OSTI]

    Pecheux, Kelley Klaver

    2012-06-07T23:59:59.000Z

    for its effects on the overall ranking of the rail-highway intersections. A state hazard index was chosen from a state-of-the-practice review with which to compare the current and revised Texas Priority Indices. Finally, the effectiveness of each...

  5. Return on Investment for State Highway Projects 25th Annual Transportation Research Conference

    E-Print Network [OSTI]

    Minnesota, University of

    Return on Investment for State Highway Projects 25th Annual Transportation Research Conference May ­ Maintain and repair existing roads and bridges · Grow the Economy by Making Your Transportation Investments;8 · Describes strategies states can use to achieve the greatest outcomes at the least cost with transportation

  6. Linseed Oil-Based Concrete Surface Treatment -for Building and Highway Structures in

    E-Print Network [OSTI]

    , Linseed Oil-Based Concrete Surface Treatment -for Building and Highway Structures in Hong Kong Y using jour Canadian linseed oil- based sealants on concrete specimens madejrom G30120 and G45120 Keywords: Unseed Oil, Concrete Surface Treatment, Salt Spray Resistance, Carbonation, Bond Strength, Ultra

  7. Coordinated Control and Communication for Enhanced Safety of Highway Vehicle Platoons

    E-Print Network [OSTI]

    Zhang, Hongwei

    Coordinated Control and Communication for Enhanced Safety of Highway Vehicle Platoons Lijian Xu as a promising framework in developing intelligent transportation systems. By autonomous or semi-autonomous vehicle control and inter-vehicle coordination, an appropriately managed platoon can potentially offer

  8. Control Design of an Automated Highway System Roberto Horowitz and Pravin Varaiya

    E-Print Network [OSTI]

    Varaiya, Pravin

    vehicle driving decisions to the driver. It is argued in [42] that full automation can greatly increase/h), the vehicles must be fully automated, since people cannot react quickly enough to drive safely with such smallControl Design of an Automated Highway System Roberto Horowitz and Pravin Varaiya University

  9. A technique for classifying and evaluating railroad-highway grade crossings

    E-Print Network [OSTI]

    Newton, Thomas Monroe

    1974-01-01T23:59:59.000Z

    . Track View of Research Annex Boring Site 50 33. Locations for Test Holes at Research Annex Boring Site 52 34. Goodyear Rubber Crossing Installation at FM Highway 1960 and Rock Island Railroad 57 35. Cross Section Through Rubber Panel Crossing 57 36...

  10. Power Control in Spectrum Overlay Networks: How to Cross a Multi-Lane Highway

    E-Print Network [OSTI]

    Islam, M. Saif

    Power Control in Spectrum Overlay Networks: How to Cross a Multi-Lane Highway Wei Ren, Qing Zhao Research Laboratory, Adelphi, MD 20783 Email: aswami@arl.army.mil Abstract--We consider power control interference to primary users. We quantify the impact of the transmission power of secondary users

  11. First Smart Highway Bridge in Canada S. H. RizkaIla and G. Tadros

    E-Print Network [OSTI]

    fiber composite cables, CFCC, 5/8" FIRST SMART HIGHWAY BRIDGE IN CANADA Ri::Jwlla & Tadros. 1994 PAGE I by Mitsubishi Kasei. Distribution of the CFCC cables and Leadline tendons within the bottom flange, is shown and the materials characteristics of the CFCC, Leadline rods and the concrete. The material characteristics of CFRP

  12. Microsimulation analysis of a hybrid system model of multiple merge junction highway and semiautomatic vehicles

    E-Print Network [OSTI]

    Girault, Alain

    Microsimulation analysis of a hybrid system model of multiple merge junction highway and semi­automatic vehicles Marco Antoniottiz Akash Deshpandez Alain Giraultx marcoxa@path.berkeley.edu akash Abstract In this paper we present a protocol that controls semi­automated autonomous vehicles driving

  13. Engineers are problem solvers. Computers, safe water and highways are just a few things

    E-Print Network [OSTI]

    Gelfond, Michael

    Engineers are problem solvers. Computers, safe water and highways are just a few things invented by engineers that we use everyday. Using math, science and technology, engineers make life safer and easier. Engineers are in short supply. Nation-wide enrollment in engineering programs continues to decline. Schools

  14. V2V Wireless Communication Protocol for Rear-End Collision Avoidance on Highways

    E-Print Network [OSTI]

    Roy, Sumit

    vehicle crashes in the United States annually has never fallen below 35,000, and the number of persons crashes (both fatal and nonfatal), or more than 1.5 million crashes per year, are rear-end collisions [2]. In Washington State, for the year 2005, rear-end crashes were the leading type of collision on state highways

  15. Intermediate-Scale Experiments to Evaluate Silt Fence Designs to Control Sediment Discharge from Highway

    E-Print Network [OSTI]

    Clement, Prabhakar

    headings: Silts; Fences; Erosion; Sediment transport; Best management practice; Stormwater management Abstract: Soil erosion occurring at highway construction sites can contribute large amounts of sediment to the local stream network and degrades overall water quality. The environmental impacts of the sediment

  16. Control device for vehicle speed

    SciTech Connect (OSTI)

    Kawata, S.; Hyodo, H.

    1987-03-03T23:59:59.000Z

    This patent describes a control device for vehicle speed comprising: a throttle driving means operatively coupled to a throttle valve of a vehicle; a set switch means for commanding memorization of the vehicle speed; a resume switch means for commanding read of the vehicle speed; a vehicle speed detecting means for generating a signal in accordance with the vehicle speed; a vehicle speed memory; an electronical control means for memorizing in the vehicle speed memory vehicle speed information corresponding to the signal obtained from the vehicle speed detecting means in response to actuation of the set switch means. The control means is also for reading out the content of the vehicle speed memory in response to actuation of the resume switch means to control the throttle driving means in accordance with the read-out content; a power supply means for supplying power to the electronical control means; and a power supply control switch means for controlling supply of power to the electronical control means in response to the state of at least one of the set switch means and the resume switch means and the state of the electronical control means. The improvement described here comprises the electronical control means sets the power supply control switch means into such a state that supply of power to the electronical control means is turned OFF, when vehicle speed information is not memorized in the vehicle speed memory.

  17. Temporary Losses of Highway Capacity and Impacts on Performance: Phase 2

    SciTech Connect (OSTI)

    Chin, S.M.

    2004-11-10T23:59:59.000Z

    Traffic congestion and its impacts significantly affect the nation's economic performance and the public's quality of life. In most urban areas, travel demand routinely exceeds highway capacity during peak periods. In addition, events such as crashes, vehicle breakdowns, work zones, adverse weather, railroad crossings, large trucks loading/unloading in urban areas, and other factors such as toll collection facilities and sub-optimal signal timing cause temporary capacity losses, often worsening the conditions on already congested highway networks. The impacts of these temporary capacity losses include delay, reduced mobility, and reduced reliability of the highway system. They can also cause drivers to re-route or reschedule trips. Such information is vital to formulating sound public policies for the highway infrastructure and its operation. In response to this need, Oak Ridge National Laboratory, sponsored by the Federal Highway Administration (FHWA), made an initial attempt to provide nationwide estimates of the capacity losses and delay caused by temporary capacity-reducing events (Chin et al. 2002). This study, called the Temporary Loss of Capacity (TLC) study, estimated capacity loss and delay on freeways and principal arterials resulting from fatal and non-fatal crashes, vehicle breakdowns, and adverse weather, including snow, ice, and fog. In addition, it estimated capacity loss and delay caused by sub-optimal signal timing at intersections on principal arterials. It also included rough estimates of capacity loss and delay on Interstates due to highway construction and maintenance work zones. Capacity loss and delay were estimated for calendar year 1999, except for work zone estimates, which were estimated for May 2001 to May 2002 due to data availability limitations. Prior to the first phase of this study, which was completed in May of 2002, no nationwide estimates of temporary losses of highway capacity by type of capacity-reducing event had been made. This report describes the second phase of the TLC study (TLC2). TLC2 improves upon the first study by expanding the scope to include delays from rain, toll collection facilities, railroad crossings, and commercial truck pickup and delivery (PUD) activities in urban areas. It includes estimates of work zone capacity loss and delay for all freeways and principal arterials, rather than for Interstates only. It also includes improved estimates of delays caused by fog, snow, and ice, which are based on data not available during the initial phase of the study. Finally, computational errors involving crash and breakdown delay in the original TLC report are corrected.

  18. A STUDY OF THE DISCREPANCY BETWEEN FEDERAL AND STATE MEASUREMENTS OF ON-HIGHWAY FUEL CONSUMPTION

    SciTech Connect (OSTI)

    Hwang, HL

    2003-08-11T23:59:59.000Z

    Annual highway fuel taxes are collected by the Treasury Department and placed in the Highway Trust Fund (HTF). There is, however, no direct connection between the taxes collected by the Treasury Department and the gallons of on-highway fuel use, which can lead to a discrepancy between these totals. This study was conducted to determine how much of a discrepancy exists between the total fuel usages estimated based on highway revenue funds as reported by the Treasury Department and the total fuel usages used in the apportionment of the HTF to the States. The analysis was conducted using data from Highway Statistics Tables MF-27 and FE-9 for the years 1991-2001. It was found that the overall discrepancy is relatively small, mostly within 5% difference. The amount of the discrepancy varies from year to year and varies among the three fuel types (gasoline, gasohol, special fuels). Several potential explanations for these discrepancies were identified, including issues on data, tax measurement, gallon measurement, HTF receipts, and timing. Data anomalies caused by outside forces, such as deferment of tax payments from one fiscal year to the next, can skew fuel tax data. Fuel tax evasion can lead to differences between actual fuel use and fuel taxes collected. Furthermore, differences in data collection and reporting among States can impact fuel use data. Refunds, credits, and transfers from the HTF can impact the total fuel tax receipt data. Timing issues, such as calendar year vs. fiscal year, can also cause some discrepancy between the two data sources.

  19. Generic vehicle speed models based on traffic simulation: Development and application

    SciTech Connect (OSTI)

    Margiotta, R.; Cohen, H.; Elkins, G.; Rathi, A.; Venigalla, M.

    1994-12-15T23:59:59.000Z

    This paper summarizes the findings of a research project to develop new methods of estimating speeds for inclusion in the Highway Performance Monitoring System (HPMS) Analytical Process. The paper focuses on the effects of traffic conditions excluding incidents (recurring congestion) on daily average ed and excess fuel consumption. A review of the literature revealed that many techniques have been used to predict speeds as a function of congestion but most fail to address the effects of queuing. However, the method of Dowling and Skabardonis avoids this limitation and was adapted to the research. The methodology used the FRESIM and NETSIM microscopic traffic simulation models to develop uncongested speed functions and as a calibration base for the congested flow functions. The chief contributions of the new speed models are the simplicity of application and their explicit accounting for the effects of queuing. Specific enhancements include: (1) the inclusion of a queue discharge rate for freeways; (2) use of newly defined uncongested flow speed functions; (3) use of generic temporal distributions that account for peak spreading; and (4) a final model form that allows incorporation of other factors that influence speed, such as grades and curves. The main limitation of the new speed models is the fact that they are based on simulation results and not on field observations. They also do not account for the effect of incidents on speed. While appropriate for estimating average national conditions, the use of fixed temporal distributions may not be suitable for analyzing specific facilities, depending on observed traffic patterns. Finally, it is recommended that these and all future speed models be validated against field data where incidents can be adequately identified in the data.

  20. High speed transient sampler

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1995-01-01T23:59:59.000Z

    A high speed sampler comprises a meandered sample transmission line for transmitting an input signal, a straight strobe transmission line for transmitting a strobe signal, and a plurality of sampling gates along the transmission lines. The sampling gates comprise a four terminal diode bridge having a first strobe resistor connected from a first terminal of the bridge to the positive strobe line, a second strobe resistor coupled from the third terminal of the bridge to the negative strobe line, a tap connected to the second terminal of the bridge and to the sample transmission line, and a sample holding capacitor connected to the fourth terminal of the bridge. The resistance of the first and second strobe resistors is much higher than the signal transmission line impedance in the preferred system. This results in a sampling gate which applies a very small load on the sample transmission line and on the strobe generator. The sample holding capacitor is implemented using a smaller capacitor and a larger capacitor isolated from the smaller capacitor by resistance. The high speed sampler of the present invention is also characterized by other optimizations, including transmission line tap compensation, stepped impedance strobe line, a multi-layer physical layout, and unique strobe generator design. A plurality of banks of such samplers are controlled for concatenated or interleaved sample intervals to achieve long sample lengths or short sample spacing.

  1. High speed transient sampler

    DOE Patents [OSTI]

    McEwan, T.E.

    1995-11-28T23:59:59.000Z

    A high speed sampler comprises a meandered sample transmission line for transmitting an input signal, a straight strobe transmission line for transmitting a strobe signal, and a plurality of sampling gates along the transmission lines. The sampling gates comprise a four terminal diode bridge having a first strobe resistor connected from a first terminal of the bridge to the positive strobe line, a second strobe resistor coupled from the third terminal of the bridge to the negative strobe line, a tap connected to the second terminal of the bridge and to the sample transmission line, and a sample holding capacitor connected to the fourth terminal of the bridge. The resistance of the first and second strobe resistors is much higher than the signal transmission line impedance in the preferred system. This results in a sampling gate which applies a very small load on the sample transmission line and on the strobe generator. The sample holding capacitor is implemented using a smaller capacitor and a larger capacitor isolated from the smaller capacitor by resistance. The high speed sampler of the present invention is also characterized by other optimizations, including transmission line tap compensation, stepped impedance strobe line, a multi-layer physical layout, and unique strobe generator design. A plurality of banks of such samplers are controlled for concatenated or interleaved sample intervals to achieve long sample lengths or short sample spacing. 17 figs.

  2. Correlation of the Texas Highway Department Cone Penetrometer Test with unconsolidated-undrained shear strength of cohesive soils

    E-Print Network [OSTI]

    Hamoudi, Manaf M

    2012-06-07T23:59:59.000Z

    CORRELATION OF THE TEXAS HIGHWAY DEPARTMENT CONE PENETROMETER TEST WITH UNCONSOLIDATED-UNDRAINED SHEAR STRENGTH OF COHESIVE SOILS A Thesis by MANAF M. HAMOUDI Submitted to the Graduate College of Texas A&M University in partial fulfillment... of the requirement for the degree of MASTER OF SCIENCE December 1974 Major Subject: Civil Engineering CORRELATION OF THE TEXAS HIGHWAY DEPARTMENT CONE PENETROMETER TEST WITH UNCONSOLIDATED-UNDRAINED SHEAR STRENGTH OF COHESIVE SOILS A Thesis by MANAF M...

  3. Energy Efficiency Opportunities in Highway Lodging Buildings: Development of 50% Energy Savings Design Technology Packages

    SciTech Connect (OSTI)

    Jiang, Wei; Gowri, Krishnan; Thornton, Brian A.; Liu, Bing

    2010-06-30T23:59:59.000Z

    This paper presents the process, methodology, and assumptions for development of the 50% Energy Savings Design Technology Packages for Highway Lodging Buildings, a design guidance document that provides specific recommendations for achieving 50% energy savings in roadside motels (highway lodging) above the requirements of ANSI/ASHRAE/IESNA Standard 90.1-2004. This 50% solution represents a further step toward realization of the U.S. Department of Energys net-zero energy building goal, and go beyond the 30% savings in the Advanced Energy Design Guide series (upon which this work was built). This work can serve as the technical feasibility study for the development of a 50% saving Advanced Energy Design Guide for highway lodging, and thus should greatly expedite the development process. The purpose of this design package is to provide user-friendly design assistance to designers, developers, and owners of highway lodging properties. It is intended to encourage energy-efficient design by providing prescriptive energy-efficiency recommendations for each climate zone that attains the 50% the energy savings target. This paper describes the steps that were taken to demonstrate the technical feasibility of achieving a 50% reduction in whole-building energy use with practical and commercially available technologies. The energy analysis results are presented, indicating the recommended energy-efficient measures achieved a national-weighted average energy savings of 55%, relative to Standard 90.1-2004. The cost-effectiveness of the recommended technology package is evaluated and the result shows an average simple payback of 11.3 years.

  4. Study of the effect of seasonal desiccation and wetting on the strength of highway subgrade soils

    E-Print Network [OSTI]

    Biswas, Bhupati Ranjan

    1962-01-01T23:59:59.000Z

    for possible deteriora- tion of soil strength due to cyolic drying and wetting. Likewise the test procedure (28) used by the Kansas State Highway Commission provides for saturation ranging from a few minutes to two weeks, depending on the density... (il, ). East Pakistan can be divided into three broad geological divisions: (a) the deltaic coastal areas; (b) the broad alluvial valleys of the Ganges and Brahmaputra Rivers through the central, western and northern portion of the country; and (c...

  5. Weatherization Projects on the Rise in Michigan County | Department...

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

    Weatherization Projects on the Rise in Michigan County Weatherization Projects on the Rise in Michigan County August 12, 2010 - 5:03pm Addthis Kevin Craft Monroe County Opportunity...

  6. Estimating the Economic Cost of Sea-Level Rise

    E-Print Network [OSTI]

    Sugiyama, Masahiro.

    To improve the estimate of economic costs of future sea-level rise associated with global climate change,

  7. The Emphasis on Ecological Design for High-rise Buildings

    E-Print Network [OSTI]

    Xu, F.; Zhang, G.; Xie, M.

    2006-01-01T23:59:59.000Z

    -rise buildings should be paid more attention because high-rise buildings consume a large amount of natural resources and energy. An ecological design method of high-rise buildings was introduced based on four points: adaptation of climate, ecological accounting...

  8. South High Rise Renovation and Addition Project OSU-109000

    E-Print Network [OSTI]

    South High Rise Renovation and Addition Project OSU-109000 Program of Requirements February 16 Mission Project Objectives Project Budget #12;Program of Requirements South High Rises Renovation Rises Renovation & Addition Project OSU-109000 February 2010 Project Overview February 2010 Page 4

  9. South High Rises Renovation and Addition Program of Requirements

    E-Print Network [OSTI]

    South High Rises Renovation and Addition OSU-109000 Program of Requirements October 2009 234 N Project Objectives Project Budget #12;Program of Requirements South High Rises Renovation and Addition are considered to be part of the Program of Requirements. #12;Program of Requirements South High Rises Renovation

  10. he Sun Rises From the Village (Gne Kyden

    E-Print Network [OSTI]

    Gürel, Levent

    he Sun Rises From the Village (Güne Köyden Douyor) project, working this year in the village of Eymir in Yozgat's Sorgun district, has started off the semester with 70 volunteers. The Sun Rises From University's umbrella organization for student volunteer activity. The goal of The Sun Rises From the Village

  11. ICE SHEET SOURCES OF SEA LEVEL RISE AND FRESHWATER DISCHARGE

    E-Print Network [OSTI]

    Carlson, Anders

    ICE SHEET SOURCES OF SEA LEVEL RISE AND FRESHWATER DISCHARGE DURING THE LAST DEGLACIATION Anders E the sources of sea level rise and freshwater dis- charge to the global oceans associated with retreat of ice­10 m sea level rise at 19.0­19.5 ka, sourced largely from Northern Hemisphere ice sheet retreat

  12. Contemporary Sea Level Rise Anny Cazenave and William Llovel

    E-Print Network [OSTI]

    Siegel, David A.

    Contemporary Sea Level Rise Anny Cazenave and William Llovel Laboratoire d'´etudes en g reserved 1941-1405/10/0115-0145$20.00 Key Words sea level rise, climate change, land ice melt, ocean we report on most recent results on contemporary sea level rise. We first present sea level

  13. CLIMATE CHANGE AND SEA LEVEL RISE SCENARIOS FOR CALIFORNIA

    E-Print Network [OSTI]

    CLIMATE CHANGE AND SEA LEVEL RISE SCENARIOS FOR CALIFORNIA VULNERABILITY AND ADAPTATION This white paper provides an evaluation of physical elements of climate change and sea level rise, and a range of sea level rise along the California coast. Keywords: California climate change

  14. Sea Level Rise Adaptation: From Climate Chaos to Climate Resilience

    E-Print Network [OSTI]

    Rohs, Remo

    Sea Level Rise Adaptation: From Climate Chaos to Climate Resilience Human Dimensions and Ocean, 2013 #12;Main Discussion Points · How do we incorporate Sea-Level Rise into planning and regulatory actions? · What Does the new NRC Report on Sea- Level Rise mean to Decision-makers? · How does Sea-Level

  15. Sea-Level Rise OF THE EFFECTS OF

    E-Print Network [OSTI]

    Climate Change AND Sea-Level Rise IN Florida AN Update OF THE EFFECTS OF Climate Change ON FLORIDA to them. Florida Oceans and Coastal Council. 2010. Climate Change and Sea-Level Rise in Florida: An Update, sea-level rise, with the expectation that updates for increasing greenhouse gases, air temperature

  16. Virginia Wetlands Report Sea Level Rise & Other Coastal Hazards

    E-Print Network [OSTI]

    Virginia Wetlands Report Sea Level Rise & Other Coastal Hazards: The Risks of Coastal Living See. Climate change is bringing increased temperatures, rising sea level, more frequent storms and increased in tide levels. From these records it is not only clear that water levels are rising, they appear

  17. Assessment of the Applicability of Cooperative Vehicle-Highway Automation Systems to Bus Transit and Intermodal Freight: Case Study Feasibility Analyses in the Metropolitan Chicago Region

    E-Print Network [OSTI]

    2004-01-01T23:59:59.000Z

    it is a form of vehicle automation that could be implementedare developed. For full automation, vehicle-roadway wirelessof Cooperative Vehicle-Highway Automation Systems to Bus

  18. Adjustable Speed Drive Industrial Applications

    E-Print Network [OSTI]

    Poole, J. N.

    Electric motors are significant users of electricity in the United States. Approximately 66 percent of the total electricity in the U.S. is used by electric motors. Electronic adjustable speed drives (ASDs) can save energy, lower maintenance cost...

  19. Renewable variable speed hybrid system

    E-Print Network [OSTI]

    Stott, Paul Anthony

    2010-01-01T23:59:59.000Z

    At present many remote and Island communities rely solely on diesel powered generators to provide electricity. Diesel fuel is both expensive and polluting and the constant speed operation of the diesel engine is inefficient. ...

  20. Forecasting wind speed financial return

    E-Print Network [OSTI]

    D'Amico, Guglielmo; Prattico, Flavio

    2013-01-01T23:59:59.000Z

    The prediction of wind speed is very important when dealing with the production of energy through wind turbines. In this paper, we show a new nonparametric model, based on semi-Markov chains, to predict wind speed. Particularly we use an indexed semi-Markov model that has been shown to be able to reproduce accurately the statistical behavior of wind speed. The model is used to forecast, one step ahead, wind speed. In order to check the validity of the model we show, as indicator of goodness, the root mean square error and mean absolute error between real data and predicted ones. We also compare our forecasting results with those of a persistence model. At last, we show an application of the model to predict financial indicators like the Internal Rate of Return, Duration and Convexity.

  1. Computational Fluid Dynamics of rising droplets

    SciTech Connect (OSTI)

    Wagner, Matthew [Lake Superior State University; Francois, Marianne M. [Los Alamos National Laboratory

    2012-09-05T23:59:59.000Z

    The main goal of this study is to perform simulations of droplet dynamics using Truchas, a LANL-developed computational fluid dynamics (CFD) software, and compare them to a computational study of Hysing et al.[IJNMF, 2009, 60:1259]. Understanding droplet dynamics is of fundamental importance in liquid-liquid extraction, a process used in the nuclear fuel cycle to separate various components. Simulations of a single droplet rising by buoyancy are conducted in two-dimensions. Multiple parametric studies are carried out to ensure the problem set-up is optimized. An Interface Smoothing Length (ISL) study and mesh resolution study are performed to verify convergence of the calculations. ISL is a parameter for the interface curvature calculation. Further, wall effects are investigated and checked against existing correlations. The ISL study found that the optimal ISL value is 2.5{Delta}x, with {Delta}x being the mesh cell spacing. The mesh resolution study found that the optimal mesh resolution is d/h=40, for d=drop diameter and h={Delta}x. In order for wall effects on terminal velocity to be insignificant, a conservative wall width of 9d or a nonconservative wall width of 7d can be used. The percentage difference between Hysing et al.[IJNMF, 2009, 60:1259] and Truchas for the velocity profiles vary from 7.9% to 9.9%. The computed droplet velocity and interface profiles are found in agreement with the study. The CFD calculations are performed on multiple cores, using LANL's Institutional High Performance Computing.

  2. Combination of Speed Stroke Grinding and High Speed Grinding with Regard to Sustainability

    E-Print Network [OSTI]

    Linke, Barbara; Duscha, Michael; Klocke, Fritz; Dornfeld, David

    2011-01-01T23:59:59.000Z

    Stress Model for Speed Stroke Grinding of Hardened SteelStresses in Speed Stroke Grinding via FEA Simulation andCombination of Speed Stroke Grinding and High Speed Grinding

  3. An investigation of wind loads on conventional and nonconventional highway signs

    E-Print Network [OSTI]

    Ross, Hayes Ellis

    1967-01-01T23:59:59.000Z

    ) With the flanged connection at the base of the tubular support the sign could be rotated. in 22. 5-degree increments allowing for a semi-controlled environment. (d) The wind loads on a sign with a single tubular support are believed to be of the same order...AN INVESTIGATION OF WIND LOADS ON CONVENTIONAL AND NONCONVENTIONAL HIGHWAY SIGNS A Thesis By Hayes Ellis Ross, Jr. Submitted to the Graduate College of the Texas A&M University in partial fulfillment of the requirements for the degree...

  4. Proposal for development of a resource and commodity highway system. Research report

    SciTech Connect (OSTI)

    Deacon, J.A.; Allen, D.L.; Crabtree, J.D.; Agent, K.R.; Pigman, J.G.

    1994-01-01T23:59:59.000Z

    In 1986, the Kentucky General Assembly established the Extended Weight Coal and Coal By-Products Haul Road System. The system includes approximately 3,200 miles of the most significant coal-haul roads in the state and permits coal trucks to carry much larger payloads than trucks with other commodities. In many ways, the extended-weight system has been very successful. Coal-transportation productivity has been substantially increased, and Kentucky coal continues to remain competitive in the marketplace. The study, conducted by the Kentucky Transportation Center, concluded that development of a statewide trucking network, herein named the Resource and Commodity Highway System, was both feasibile and desirable.

  5. Hybrid 320 Ton Off Highway Haul Truck: Quarterly Technical Status Report 1

    SciTech Connect (OSTI)

    Salasoo, Lembit

    2003-02-11T23:59:59.000Z

    The mine proving ground to be used for the hybrid off highway vehicle (OHV) demonstration was visited, to obtain haul route profile data and OHV vehicle data. A 6500-ft haul mission with 7% average grade was selected. Enhancements made to a dynamic model of hybrid missions provided capability to analyze hybrid OHV performance. A benefits study defined relationships between fuel and productivity benefits and hybrid system parameters. OHV hybrid system requirements were established, and a survey of candidate energy storage technology characteristics was carried out. Testing of the performance of an existing power battery bank verified its suitability for use in the hybrid OHV demonstration.

  6. ,"U.S. On-Highway Diesel Fuel Prices"

    U.S. Energy Information Administration (EIA) 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 CenterFranconia, Virginia:FAQ < RAPID Jump to:SeadovCooperativeA2. World liquids consumption by region, Reference case,A5.On-Highway

  7. Sustainably Priced Energy Enterprise Development (SPEED) Goals

    Broader source: Energy.gov [DOE]

    Vermont's Sustainably Priced Energy Enterprise Development (SPEED) Program was created by legislation in 2005 to promote renewable energy development. The SPEED program itself is not a renewable...

  8. Speeding Up Zeolite Evaluation for Carbon Capture

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

    Speeding Up Zeolite Evaluation for Carbon Capture Speeding Up Zeolite Evaluation for Carbon Capture Zeolite.png Schematic of an important class of porous materials known as...

  9. Energy Management Strategies for Fast Battery Temperature Rise...

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

    Very Cold Conditions Energy Management Strategies for Fast Battery Temperature Rise and Engine Efficiency Improvement at Very Cold Conditions 2010 DOE Vehicle Technologies and...

  10. Rising Electricity Costs: A Challenge For Consumers, Regulators, And Utilities

    Broader source: Energy.gov [DOE]

    Presentation covers the rising electricity costs and is given at the Spring 2010 Federal Utility Partnership Working Group (FUPWG) meeting in Providence, Rhode Island.

  11. Energy Management Strategies for Fast Battery Temperature Rise...

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

    Strategies to Quickly Raise Battery Temperature and Engine Efficiency Component level comparison: - Compare rate of temperature rise for the battery , engine. Vehicle...

  12. The rise and fall of presidential power in Iran.

    E-Print Network [OSTI]

    Jacobsen, Donavan.

    2008-01-01T23:59:59.000Z

    ??This project explores the power dynamics within the Iranian political system, asking what accounts for the rise and fall of a president's power relative to (more)

  13. The social values at risk from sea-level rise

    SciTech Connect (OSTI)

    Graham, Sonia, E-mail: sonia.graham@unimelb.edu.au [Department of Resource Management and Geography, The University of Melbourne, 221 Bouverie St., Carlton, Victoria 3053 (Australia)] [Department of Resource Management and Geography, The University of Melbourne, 221 Bouverie St., Carlton, Victoria 3053 (Australia); Barnett, Jon, E-mail: jbarn@unimelb.edu.au [Department of Resource Management and Geography, The University of Melbourne, 221 Bouverie St., Carlton, Victoria 3053 (Australia)] [Department of Resource Management and Geography, The University of Melbourne, 221 Bouverie St., Carlton, Victoria 3053 (Australia); Fincher, Ruth, E-mail: r.fincher@unimelb.edu.au [Department of Resource Management and Geography, The University of Melbourne, 221 Bouverie St., Carlton, Victoria 3053 (Australia)] [Department of Resource Management and Geography, The University of Melbourne, 221 Bouverie St., Carlton, Victoria 3053 (Australia); Hurlimann, Anna, E-mail: anna.hurlimann@unimelb.edu.au [Faculty of Architecture, Building and Planning, The University of Melbourne, Architecture and Planning Building, Parkville, Victoria 3010 (Australia)] [Faculty of Architecture, Building and Planning, The University of Melbourne, Architecture and Planning Building, Parkville, Victoria 3010 (Australia); Mortreux, Colette, E-mail: colettem@unimelb.edu.au [Department of Resource Management and Geography, The University of Melbourne, 221 Bouverie St., Carlton, Victoria 3053 (Australia)] [Department of Resource Management and Geography, The University of Melbourne, 221 Bouverie St., Carlton, Victoria 3053 (Australia); Waters, Elissa, E-mail: elissa.waters@unimelb.edu.au [Department of Resource Management and Geography, The University of Melbourne, 221 Bouverie St., Carlton, Victoria 3053 (Australia)] [Department of Resource Management and Geography, The University of Melbourne, 221 Bouverie St., Carlton, Victoria 3053 (Australia)

    2013-07-15T23:59:59.000Z

    Analysis of the risks of sea-level rise favours conventionally measured metrics such as the area of land that may be subsumed, the numbers of properties at risk, and the capital values of assets at risk. Despite this, it is clear that there exist many less material but no less important values at risk from sea-level rise. This paper re-theorises these multifarious social values at risk from sea-level rise, by explaining their diverse nature, and grounding them in the everyday practices of people living in coastal places. It is informed by a review and analysis of research on social values from within the fields of social impact assessment, human geography, psychology, decision analysis, and climate change adaptation. From this we propose that it is the lived values of coastal places that are most at risk from sea-level rise. We then offer a framework that groups these lived values into five types: those that are physiological in nature, and those that relate to issues of security, belonging, esteem, and self-actualisation. This framework of lived values at risk from sea-level rise can guide empirical research investigating the social impacts of sea-level rise, as well as the impacts of actions to adapt to sea-level rise. It also offers a basis for identifying the distribution of related social outcomes across populations exposed to sea-level rise or sea-level rise policies.

  14. Rising Above the Water: New Orleans Implements Energy Efficiency...

    Energy Savers [EERE]

    Rising Above the Water: New Orleans Implements Energy Efficiency and Sustainability Practices Following Hurricanes Katrina and Rita On August 29, 2005, Hurricane Katrina, the...

  15. Clean-coal technology by-products used in a highway embankment stabilization demonstration project. Master's thesis

    SciTech Connect (OSTI)

    Nodjomian, S.M.

    1994-01-01T23:59:59.000Z

    Clean-coal technology by-products are used in a highway embankment demonstration project. This research chronicles the procedures used in the process and analyzes the stability of a repaired highway embankment. The reconstructed slope is analyzed using an Intelligent Discussion Support System that was developed from a slope stability program. Water quality studies are performed and an instrumentation plan is suggested. The calculated factors of safety and the observed embankment performance give indications that the field demonstration project was a success. Long-term monitoring will be the best barometer for determining embankment gross movement and the future of FGD by-products as a stabilizing material.

  16. Sea-Level Rise, El Nio, And The Future Of The California Coastline

    E-Print Network [OSTI]

    Russell, Nicole Lian

    2014-01-01T23:59:59.000Z

    City of Santa Barbara Sea-Level Rise Vulnerability Study.Projecting future sea level rise. California Climate Changeand responses to sea level rise. In Understanding Sea Level

  17. Heart-shaped bubbles rising in anisotropic liquids Chunfeng Zhou

    E-Print Network [OSTI]

    Feng, James J.

    Heart-shaped bubbles rising in anisotropic liquids Chunfeng Zhou Department of Chemical of an unusual inverted-heart shape for bubbles rising in an anisotropic micellar solution. We explain the bubble heart or a spade a . The upper sur- face has sloped shoulders that join in a point. The bottom

  18. First and second order semi-Markov chains for wind speed modeling

    E-Print Network [OSTI]

    D'Amico, Guglielmo; Prattico, Flavio

    2012-01-01T23:59:59.000Z

    The increasing interest in renewable energy, particularly in wind, has given rise to the necessity of accurate models for the generation of good synthetic wind speed data. Markov chains are often used with this purpose but better models are needed to reproduce the statistical properties of wind speed data. We downloaded a database, freely available from the web, in which are included wind speed data taken from L.S.I. -Lastem station (Italy) and sampled every 10 minutes. With the aim of reproducing the statistical properties of this data we propose the use of three semi-Markov models. We generate synthetic time series for wind speed by means of Monte Carlo simulations. The time lagged autocorrelation is then used to compare statistical properties of the proposed models with those of real data and also with a synthetic time series generated though a simple Markov chain.

  19. Simulation of vehicular delays on two-lane rural highway grades

    E-Print Network [OSTI]

    Byington, Stanley R

    1964-01-01T23:59:59.000Z

    Defining the Problem Figures of Merit Elements of the Design 4 5 5 III. FORNULATIOH OF THE MODEL IV. V, Organisation of the Model . Loading the "System" Entering Vehicles into the "System" . Assignment of Vehicle Characteristics . Vehicle... Classifications Desired Operating Speed . Movement of "System" Vehicles Vehicles Departing From "System" Vehicle Interference Measurements and Accumulations Vehicle Operating Speeds Geometric Conditions Operating Conditions . . ~ FIELD STUDY PROCEDURE...

  20. The Center for Excellence in Rural Safety (CERS) at the University of Minnesota developed the Rural Highway Safety

    E-Print Network [OSTI]

    Minnesota, University of

    , and work-zone safety. · Complements SafeRoadMaps.org, a mapping tool also developed by CERS. · ListsThe Center for Excellence in Rural Safety (CERS) at the University of Minnesota developed the Rural Highway Safety Clearinghouse in 2008 with support from the Federal High- way Administration (FHWA) as part

  1. Storm water quantity control has long been a challenge for highway designers. Traditionally, centralized best management practice designs

    E-Print Network [OSTI]

    Fiedler, Fritz R.

    on centralized detention-based best man- agement practices (BMPs) that reduce the amount of storm water released and environmentally sound storm water management practice (1, 6). Numerous studies and other research efforts have, centralized best management practice designs are often cost prohibitive and inefficient in many rural highway

  2. Optimal Highway Maintenance Policies under Uncertainty Bruno Castanier, Ph.D., Ecole des Mines de Nantes / IRCCyN

    E-Print Network [OSTI]

    Boyer, Edmond

    will extend the lifecycle of the road by performing preventive, conditioned-based maintenance to slow down the growth of cracks. Classical preventive maintenance policies usually shorten the lifecycle by forcingOptimal Highway Maintenance Policies under Uncertainty Bruno Castanier, Ph.D., Ecole des Mines de

  3. Project Information Form Project Title Do California Highways Act as Barriers to Gene Flow for Ground-Dwelling

    E-Print Network [OSTI]

    California at Davis, University of

    (by each agency or organization) Caltrans $78,395 Total Project Cost $78,395 Agency ID or ContractProject Information Form Project Title Do California Highways Act as Barriers to Gene Flow of Research Project Roads can act as significant barriers to wildlife dispersal, creating small fragmented

  4. Hybrid 320 Ton Off Highway Haul Truck: Quarterly Technical Status Report 11, DOE/AL68080-TSR11

    SciTech Connect (OSTI)

    Tim Richter

    2005-09-26T23:59:59.000Z

    This eleventh quarterly status report for the Hybrid Off Highway Vehicle (OHV) project, DOE Award DE-FC04-02AL68080 presents the project status at the end of June 2005, and covers activities in the eleventh project quarter, April 2005-June 2005.

  5. Hybrid 240 Ton Off Highway Haul Truck: Quarterly Technical Status Report 19, DOE/AL68080-TSR19

    SciTech Connect (OSTI)

    Tim Richter

    2007-06-30T23:59:59.000Z

    This nineteenth quarterly status report for the Hybrid Off Highway Vehicle (OHV) project, DOE Award DE-FC04-02AL68080 presents the project status at the end of June 2007, and covers activities in the nineteenth project quarter, April 2007 June 2007.

  6. Development of a right-of-way cost estimation and cost estimate management process framework for highway projects

    E-Print Network [OSTI]

    Lucas, Matthew Allen

    2009-05-15T23:59:59.000Z

    Escalation of right-of-way (ROW) costs have been shown to be a prime contributor to project cost escalation in the highway industry. Two problems contribute to ROW cost escalation: 1) the ROW cost estimation and cost estimate management process...

  7. 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.

  8. Diesel Fueled SOFC for Class 7/Class 8 On-Highway Truck Auxiliary Power

    SciTech Connect (OSTI)

    Vesely, Charles John-Paul [Cummins Power Generation; Fuchs, Benjamin S. [Cummins Power Generation; Booten, Chuck W. [Protonex Technology, LLC

    2010-03-31T23:59:59.000Z

    The following report documents the progress of the Cummins Power Generation (CPG) Diesel Fueled SOFC for Class 7/Class 8 On-Highway Truck Auxiliary Power (SOFC APU) development and final testing under the U.S. Department of Energy (DOE) Energy Efficiency and Renewable Energy (EERE) contract DE-FC36-04GO14318. This report overviews and summarizes CPG and partner development leading to successful demonstration of the SOFC APU objectives and significant progress towards SOFC commercialization. Significant SOFC APU Milestones: Demonstrated: Operation meeting SOFC APU requirements on commercial Ultra Low Sulfur Diesel (ULSD) fuel. SOFC systems operating on dry CPOX reformate. Successful start-up and shut-down of SOFC APU system without inert gas purge. Developed: Low cost balance of plant concepts and compatible systems designs. Identified low cost, high volume components for balance of plant systems. Demonstrated efficient SOFC output power conditioning. Demonstrated SOFC control strategies and tuning methods.

  9. Dual-speed wind turbine generation

    SciTech Connect (OSTI)

    Muljadi, E.; Butterfield, C.P. [National Renewable Energy Lab., Golden, CO (United States)] [National Renewable Energy Lab., Golden, CO (United States); Handman, D. [Flowind Corp., San Rafael, CA (United States)] [Flowind Corp., San Rafael, CA (United States)

    1996-10-01T23:59:59.000Z

    Induction generator has been used since the early development of utility-scale wind turbine generation. An induction generator is the generator of choice because of its ruggedness and low cost. With an induction generator, the operating speed of the wind turbine is limited to a narrow range (almost constant speed). Dual- speed operation can be accomplished by using an induction generator with two different sets of winding configurations or by using a dual output drive train to drive two induction generators with two different rated speeds. With single-speed operation, the wind turbine operates at different power coefficients (Cp) as the wind speed varies. Operation at maximum Cp can occur only at a single wind speed. However, if the wind speed.varies across a wider range, the operating Cp will vary significantly. Dual-speed operation has the advantage of enabling the wind turbine to operate at near maximum Cp over a wider range of wind speeds. Thus, annual energy production can be increased. The dual-speed mode may generate less energy than a variable-speed mode; nevertheless, it offers an alternative which captures more energy than single-speed operation. In this paper, dual-speed operation of a wind turbine is investigated. Annual energy production is compared between single-speed and dual-speed operation. One type of control algorithm for dual-speed operation is proposed. Some results from a dynamic simulation will be presented to show how the control algorithm works as the wind turbine is exposed to varying wind speeds.

  10. On the maximum pressure rise rate in boosted HCCI operation

    E-Print Network [OSTI]

    Wildman, Craig B.

    This paper explores the combined effects of boosting, intake air temperature, trapped residual gas fraction, and dilution on the Maximum Pressure Rise Rate (MPRR) in a boosted single cylinder gasoline HCCI engine with ...

  11. Sun-Sentinel South Florida consumer costs rising faster than

    E-Print Network [OSTI]

    Belogay, Eugene A.

    Sun-Sentinel South Florida consumer costs rising faster than the national average May 18, 2011|By Donna Gehrke-White, Sun Sentinel We are not imagining it: The cost of living has jumped in South Florida

  12. Estimating the economic cost of sea-level rise

    E-Print Network [OSTI]

    Sugiyama, Masahiro, Ph. D. Massachusetts Institute of Technology

    2007-01-01T23:59:59.000Z

    (cont.) In the case of a classical linear sea-level rise of one meter per century, the use of DIVA generally decreases the protection fraction of the coastline, and results in a smaller protection cost because of high ...

  13. Rising Sea Levels Due to Global Warming Are Unstoppable

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

    Levels Due to Global Warming Are Unstoppable Mitigation can slow down but not prevent sea level rise for centuries to come August 5, 2013 Contact: Linda Vu, Lvu@lbl.gov, +1 510 495...

  14. Performance Assessment of Pressurized Stairs in High Rise Buildings

    E-Print Network [OSTI]

    Bellido, Carlos; Quiroz, Antonio; Panizo, Alfonso; Torero, Jose L

    2008-12-17T23:59:59.000Z

    Pressurized stair cases are an important part of the fire safety strategy of high rise buildings. Long egress times are compensated by creating safe environments within egress staircases allowing the displacement time ...

  15. Hi h Fi 101Hi h Fi 101Highway Finance 101:Highway Finance 101: Where Does the Money Come From?Where Does the Money Come From?Where Does the Money Come From?Where Does the Money Come From?

    E-Print Network [OSTI]

    Hi h Fi 101Hi h Fi 101Highway Finance 101:Highway Finance 101: Where Does the Money Come From?Where Does the Money Come From?Where Does the Money Come From?Where Does the Money Come From? Where Does Vehicles Vehicle Miles Traveled State-Maintained Lanep g Miles #12;Where Does the Money Come From

  16. Speed control with end cushion for high speed air cylinder

    DOE Patents [OSTI]

    Stevens, Wayne W. (Idaho Falls, ID); Solbrig, Charles W. (Idaho Falls, ID)

    1991-01-01T23:59:59.000Z

    A high speed air cylinder in which the longitudinal movement of the piston within the air cylinder tube is controlled by pressurizing the air cylinder tube on the accelerating side of the piston and releasing pressure at a controlled rate on the decelerating side of the piston. The invention also includes a method for determining the pressure required on both the accelerating and decelerating sides of the piston to move the piston with a given load through a predetermined distance at the desired velocity, bringing the piston to rest safely without piston bounce at the end of its complete stroke.

  17. Dilemmas of decline, risks of rise : the systemic and military sources of rising state strategy towards declining great powers

    E-Print Network [OSTI]

    Itzkowitz Shifrinson, Joshua R

    2013-01-01T23:59:59.000Z

    What explains variation in relatively rising state strategy towards declining great powers? This project develops and tests a theory of state strategy vis-a-vis declining great powers, termed Realist Decline Theory. Realist ...

  18. High speed optical quantum random number generation

    E-Print Network [OSTI]

    Weinfurter, Harald

    .3351 (2009). 6. I. Reidler, Y. Aviad, M. Rosenbluh, and I. Kanter, "Ultrahigh-speed random number generation

  19. Channel coding for high speed links

    E-Print Network [OSTI]

    Blitvic, Natasa

    2008-01-01T23:59:59.000Z

    This thesis explores the benefit of channel coding for high-speed backplane or chip-to-chip interconnects, referred to as the high-speed links. Although both power-constrained and bandwidth-limited, the high-speed links ...

  20. Better haul roads speed operations

    SciTech Connect (OSTI)

    Not Available

    1982-03-01T23:59:59.000Z

    Modern trucks and scrapers are manufactured to standards of increasingly larger size and degree of sophistication, and to get the greatest return in productivity it is necessary to have good haul roads. Good haul roads can reduce fuel consumption, increase vehicle speed, reduce wear and tear on machinery, and improve safety. The paper describes aspects of haul road maintenance, including levelling and repairing of the surface, reducing rolling resistance, super-elevating curves, eliminating reverse curves and controlling dust. The design of haul roads is also covered.

  1. Multi-modal Transportation > Highway Transportation > Trucking > Railroad transportation > Public transit > Rural transportation > Rural transit > Freig pipeline transportation > Airport planning and development > Airport maintenance > Bicycle and pedestr

    E-Print Network [OSTI]

    Multi-modal Transportation > Highway Transportation > Trucking > Railroad transportation > Public transit > Rural transportation > Rural transit > Freig pipeline transportation > Airport planning and development > Airport maintenance > Bicycle and pedestrian > Ports and waterways >>> Transportation ope

  2. http://tti.tamu.edu Multi-modal Transportation > Highway Transportation > Trucking > Railroad transportation > Public transit > Rural transportation > Rural transit > Freight

    E-Print Network [OSTI]

    http://tti.tamu.edu Multi-modal Transportation > Highway Transportation > Trucking > Railroad transportation > Public transit > Rural transportation > Rural transit > Freight pipeline transportation >>> Transportation operat > Freight traffic > Commodities > Travel time > Travel demand > http

  3. Managing Commodity Risks in Highway Contracts: Quantifying Premiums, Accounting for Correlations Among Risk Factors, and Designing Optimal Price-Adjustment Contracts

    E-Print Network [OSTI]

    Zhou, Xue

    2012-02-14T23:59:59.000Z

    fixed-price contracts. In turn, the contractors respond by adding premiums in bid prices. If the contractors overprice the risk, the price of fixed-price contract could exceed the price of the contract with adjustment clauses. Consequently, highway...

  4. Paper presented at the First World Congress on Applications of Transport Telematics and Intelligent Vehicle-Highway Systems, Nov. 30-Dec. 3, 1994, Paris, France.

    E-Print Network [OSTI]

    and Intelligent Vehicle-Highway Systems, Nov. 30-Dec. 3, 1994, Paris, France. Demonstration of an Advanced Public and to new or improved data sources, (4) a guarantee that existing agencies retain autonomous use

  5. Subsidence, Sea Level Rise, and Seismicity in the SacramentoSan Joaquin Delta

    E-Print Network [OSTI]

    Mount, Jeffrey; Twiss, Robert

    2005-01-01T23:59:59.000Z

    butions to global sea level rise. Nature 428:406-409. Mount420. Reed DJ. 2002a. Sea-level rise and coastal marsh sus-MARCH 2005 Subsidence, Sea Level Rise, and Seismicity in the

  6. Assessment of Seawater Intrusion Potential From Sea-level Rise in Coastal Aquifers of California

    E-Print Network [OSTI]

    Loiciga, Hugo A; Pingel, Thomas J; Garcia, Elizabeth S

    2009-01-01T23:59:59.000Z

    2009). Impact of Sea-Level Rise on Sea Water Intrusion inC. (1997). Global Sea Level Rise: A Redetermination. Surveys2007). Effects of sea-level rise on groundwater flow in a

  7. Potential Inundation Due to Rising Sea Levels in the San Francisco Bay Region

    E-Print Network [OSTI]

    Knowles, Noah

    2010-01-01T23:59:59.000Z

    impact of accelerated sea level rise on San Francisco Bay.change scenarios and sea level rise estimates for thedistribution of sea level rise over the 19502000 period.

  8. On the Rates of Sea Level Rise -- Clues From the Distant Past

    E-Print Network [OSTI]

    Berger, Wolfgang H

    2009-01-01T23:59:59.000Z

    vulnerable to sea level rise, with wetlands surrounded byA Just how much will sea level rise in the current century?on warming and tying sea level rise to such warming, gets

  9. "Half Seas Over": The Impact of Sea Level Rise on International Law and Policy

    E-Print Network [OSTI]

    Menefee, Samuel Pyeatt

    1991-01-01T23:59:59.000Z

    other ramifications of sea level rise. As the overview ofintro. 1960). SEA LEVEL RISE beneath the sea, immersedZONE ACTIVmES AND SEA LEVEL RISE I (Envi- ronment and Policy

  10. New Pilot Study on Sea Level Rise Offers Approach That Can Help...

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

    Pilot Study on Sea Level Rise Offers Approach That Can Help Communities Assess Possible Impact of Sea Level Rise on Energy Assets New Pilot Study on Sea Level Rise Offers Approach...

  11. Acceleration of the contribution of the Greenland and Antarctic ice sheets to sea level rise

    E-Print Network [OSTI]

    Rignot, E.; Velicogna, I.; van den Broeke, M. R; Monaghan, A.; Lenaerts, J. T. M

    2011-01-01T23:59:59.000Z

    make a large sea?level rise contribu- tion, Geophys. Res.and Antarctic ice sheets to sea level rise E. Rignot, 1,2 I.ice sheets to sea level rise, Geophys. Res. Lett. , 38,

  12. High speed sampler and demultiplexer

    DOE Patents [OSTI]

    McEwan, T.E.

    1995-12-26T23:59:59.000Z

    A high speed sampling demultiplexer based on a plurality of sampler banks, each bank comprising a sample transmission line for transmitting an input signal, a strobe transmission line for transmitting a strobe signal, and a plurality of sampling gates at respective positions along the sample transmission line for sampling the input signal in response to the strobe signal. Strobe control circuitry is coupled to the plurality of banks, and supplies a sequence of bank strobe signals to the strobe transmission lines in each of the plurality of banks, and includes circuits for controlling the timing of the bank strobe signals among the banks of samplers. Input circuitry is included for supplying the input signal to be sampled to the plurality of sample transmission lines in the respective banks. The strobe control circuitry can repetitively strobe the plurality of banks of samplers such that the banks of samplers are cycled to create a long sample length. Second tier demultiplexing circuitry is coupled to each of the samplers in the plurality of banks. The second tier demultiplexing circuitry senses the sample taken by the corresponding sampler each time the bank in which the sampler is found is strobed. A plurality of such samples can be stored by the second tier demultiplexing circuitry for later processing. Repetitive sampling with the high speed transient sampler induces an effect known as ``strobe kickout``. The sample transmission lines include structures which reduce strobe kickout to acceptable levels, generally 60 dB below the signal, by absorbing the kickout pulses before the next sampling repetition. 16 figs.

  13. High speed sampler and demultiplexer

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1995-01-01T23:59:59.000Z

    A high speed sampling demultiplexer based on a plurality of sampler banks, each bank comprising a sample transmission line for transmitting an input signal, a strobe transmission line for transmitting a strobe signal, and a plurality of sampling gates at respective positions along the sample transmission line for sampling the input signal in response to the strobe signal. Strobe control circuitry is coupled to the plurality of banks, and supplies a sequence of bank strobe signals to the strobe transmission lines in each of the plurality of banks, and includes circuits for controlling the timing of the bank strobe signals among the banks of samplers. Input circuitry is included for supplying the input signal to be sampled to the plurality of sample transmission lines in the respective banks. The strobe control circuitry can repetitively strobe the plurality of banks of samplers such that the banks of samplers are cycled to create a long sample length. Second tier demultiplexing circuitry is coupled to each of the samplers in the plurality of banks. The second tier demultiplexing circuitry senses the sample taken by the corresponding sampler each time the bank in which the sampler is found is strobed. A plurality of such samples can be stored by the second tier demultiplexing circuitry for later processing. Repetitive sampling with the high speed transient sampler induces an effect known as "strobe kickout". The sample transmission lines include structures which reduce strobe kickout to acceptable levels, generally 60 dB below the signal, by absorbing the kickout pulses before the next sampling repetition.

  14. Evaluation of enhanced traffic control devices for use at highway-railroad grade crossings

    E-Print Network [OSTI]

    Carroll, Randy W.

    2000-01-01T23:59:59.000Z

    the standard railroad advance warning sign. The LOOK FOR TRAIN AT CROSSING system was installed at a crossing near Temple, Texas. The vehicle-activated strobe light was triggered by a loop detector and powered by a solar charged 12-volt battery. Three study... approximately five hundred speed profiles at each location. Speed profile data is more readily obtained in the field than driver behavior. Also, the low volumes experienced on these roadways and the location of the grade crossing restrict on-site observation...

  15. SC-RISE LECTURE SERIES BRIGHT HORIZONS IN SOLAR ENERGY

    E-Print Network [OSTI]

    SC-RISE LECTURE SERIES BRIGHT HORIZONS IN SOLAR ENERGY Sustainable Energy Opportunities, Options are being developed including biomass, geothermal, hydropower, ocean thermal energy conversion, solar electric, solar thermal, and wind. However, such aspects as low energy density, siting, and temporal

  16. Computational analysis of temperature rise phenomena in electric induction motors

    E-Print Network [OSTI]

    Melnik, Roderick

    Computational analysis of temperature rise phenomena in electric induction motors Ying Huai Institute, University of Southern Denmark, Grundvigs Alle 150, Sonderborg, DK-6400, Denmark c Danfoss Drives A/S, Denmark Received 12 October 2002; accepted 20 December 2002 Abstract In developing electric

  17. COMMUNICATION NETWORKS AND THE RISE OF AN INFORMATION ELITE

    E-Print Network [OSTI]

    COMMUNICATION NETWORKS AND THE RISE OF AN INFORMATION ELITE CAN COMMUNICATION HELP THE INFORMATION shared. Thus universal access policies that provide only communication channels but do not also establish of communication channels and the levels of learning and sharing that take place, the model rigorously explains how

  18. The Ohio State University South Campus High Rise

    E-Print Network [OSTI]

    The Ohio State University South Campus High Rise Building & Utility Assessment Page 6.1 CHILLER providing its own chilled water, the creation of a central chiller plant within an existing building to serve the area, up to the creation of a freestanding central chiller plant to serve the existing

  19. Manganese-oxidizing photosynthesis before the rise of cyanobacteria

    E-Print Network [OSTI]

    Fischer, Woodward

    Manganese-oxidizing photosynthesis before the rise of cyanobacteria Jena E. Johnsona,1 , Samuel M) The emergence of oxygen-producing (oxygenic) photosynthesis fundamentally transformed our planet; however biological innovation-- the evolution of oxygenic photosynthesis (3, 4). Several bio- chemical attributes

  20. . ^ ^ L c O / ^ -Rise-R-497 Energy Systems Group

    E-Print Network [OSTI]

    2 otSMooiaji é. ^ ^ L c O / ^ - Rise-R-497 t x Energy Systems Group Annual Progress Report 1 Januar Roskilde, Denmark March 1984 r #12;RIS?-R-497 ENERGY SYSTEMS GROUP Annual Progress Report 1 January - 31 of the Energy Systems Group at Risø National Laboratory during 1983. Th«r activities may be roughly classified

  1. Rising Above the Water: New Orleans Implements Energy

    E-Print Network [OSTI]

    for Humanity DOE/NREL worked with Florida Solar Energy Center to assist the New Orleans Area Habitat for Humanity, the largest builder in the greater New Orleans area, to achieve ENERGY STAR efficiency levelsRising Above the Water: New Orleans Implements Energy Efficiency and Sustainability Practices

  2. The Rise of Egypt: New Beginnings or Same Old Story

    E-Print Network [OSTI]

    Thompson, Michael

    The Rise of Egypt: New Beginnings or Same Old Story Monday March 28th - 2011 Course # 846A, Tuition dramatic than the change in government in Egypt. What does this mean for the workers of Egypt in this transition? Will the revolution in Egypt take the path of the failed revolutions in Iran or are we witnessing

  3. Effect of Sea Level Rise on Energy Infrastructure in Four Major...

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

    Effect of Sea Level Rise on Energy Infrastructure in Four Major Metropolitan Areas (September 2014) Effect of Sea Level Rise on Energy Infrastructure in Four Major Metropolitan...

  4. Active control system for high speed windmills

    DOE Patents [OSTI]

    Avery, Don E. (45-437 Akimala St., Honolulu, HI 96744)

    1988-01-01T23:59:59.000Z

    A pump stroke is matched to the operating speed of a high speed windmill. The windmill drives a hydraulic pump for a control. Changes in speed of a wind driven shaft open supply and exhaust valves to opposite ends of a hydraulic actuator to lengthen and shorten an oscillating arm thereby lengthening and shortening the stroke of an output pump. Diminishing wind to a stall speed causes the valves to operate the hydraulic cylinder to shorten the oscillating arm to zero. A pressure accumulator in the hydraulic system provides the force necessary to supply the hydraulic fluid under pressure to drive the actuator into and out of the zero position in response to the windmill shaft speed approaching and exceeding windmill stall speed.

  5. Active control system for high speed windmills

    DOE Patents [OSTI]

    Avery, D.E.

    1988-01-12T23:59:59.000Z

    A pump stroke is matched to the operating speed of a high speed windmill. The windmill drives a hydraulic pump for a control. Changes in speed of a wind driven shaft open supply and exhaust valves to opposite ends of a hydraulic actuator to lengthen and shorten an oscillating arm thereby lengthening and shortening the stroke of an output pump. Diminishing wind to a stall speed causes the valves to operate the hydraulic cylinder to shorten the oscillating arm to zero. A pressure accumulator in the hydraulic system provides the force necessary to supply the hydraulic fluid under pressure to drive the actuator into and out of the zero position in response to the windmill shaft speed approaching and exceeding windmill stall speed. 4 figs.

  6. Wind Speed Prediction Via Time Series Modeling.

    E-Print Network [OSTI]

    Alexander, Daniel

    2009-01-01T23:59:59.000Z

    ??Projected construction of nearby wind farms motivates this study of statistical forecasting of wind speed, for which accurate prediction is critically important to the fluid (more)

  7. High speed imager test station

    DOE Patents [OSTI]

    Yates, G.J.; Albright, K.L.; Turko, B.T.

    1995-11-14T23:59:59.000Z

    A test station enables the performance of a solid state imager (herein called a focal plane array or FPA) to be determined at high image frame rates. A programmable waveform generator is adapted to generate clock pulses at determinable rates for clock light-induced charges from a FPA. The FPA is mounted on an imager header board for placing the imager in operable proximity to level shifters for receiving the clock pulses and outputting pulses effective to clock charge from the pixels forming the FPA. Each of the clock level shifters is driven by leading and trailing edge portions of the clock pulses to reduce power dissipation in the FPA. Analog circuits receive output charge pulses clocked from the FPA pixels. The analog circuits condition the charge pulses to cancel noise in the pulses and to determine and hold a peak value of the charge for digitizing. A high speed digitizer receives the peak signal value and outputs a digital representation of each one of the charge pulses. A video system then displays an image associated with the digital representation of the output charge pulses clocked from the FPA. In one embodiment, the FPA image is formatted to a standard video format for display on conventional video equipment. 12 figs.

  8. Free falling and rising of spherical and angular particles

    SciTech Connect (OSTI)

    Rahmani, M., E-mail: mona.rahmani@ifpen.fr; Wachs, A., E-mail: anthony.wachs@ifpen.fr [Fluid Mechanics Department, IFP Energies nouvelles, Etablissement de Lyon, 69360 Solaize (France)

    2014-08-15T23:59:59.000Z

    Direct numerical simulations of freely falling and rising particles in an infinitely long domain, with periodic lateral boundary conditions, are performed. The focus is on characterizing the free motion of cubical and tetrahedral particles for different Reynolds numbers, as an extension to the well-studied behaviour of freely falling and rising spherical bodies. The vortical structure of the wake, dynamics of particle movement, and the interaction of the particle with its wake are studied. The results reveal mechanisms of path instabilities for angular particles, which are different from those for spherical ones. The rotation of the particle plays a more significant role in the transition to chaos for angular particles. Following a framework similar to that of Mougin and Magnaudet [Wake-induced forces and torques on a zigzagging/spiralling bubble, J. Fluid Mech. 567, 185194 (2006)], the balance of forces and torques acting on particles is discussed to gain more insight into the path instabilities of angular particles.

  9. Relationship between design speed and operating speed at horizontal curves on suburban arterials

    E-Print Network [OSTI]

    Shamburger, Carl Brian

    2012-06-07T23:59:59.000Z

    RELATIONSHIP BETWEEN DESIGN SPEED AND OPERATING SPEED AT HORIZONTAL CURVES ON SUBURBAN ARTERIALS A Thesis by CARL BRIAN SHAMBURGER Submitted to the OIIice of Graduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE December 1995 Major Subject: Civil Engineering RELATIONSHIP BETWEEN DESIGN SPEED AND OPERATING SPEED AT HORIZONTAL CURVES ON SUBURBAN ARTERIALS A Thesis by CARL BRIAN SHAMBURGER Submitted to Texas A&M University...

  10. Variable Speed Pumping for Level Control

    E-Print Network [OSTI]

    Vasel, M.

    1982-01-01T23:59:59.000Z

    The purpose of this paper is to describe an application of variable speed pumping to level control of an industrial process. Topics include a comparison of the process using control valves with a variable speed system, an energy savings and cost...

  11. Measuring the Impacts of Speed Reduction Technologies

    E-Print Network [OSTI]

    Bertini, Robert L.

    -Seoud, Edward Anderson #12;Background Identified as a problem area Sharp curve & excessive speed High crash;Comparison of Mean Zones - Southbound, Commercial Vehicles 45 46 47 48 49 50 51 52 53 54 55 -1300 -1100 -900-70 Speed Category Before After #12;At nearest rest area

  12. SEA LEVEL RISE, COASTAL RISK, ADAPTATION OPTIONS TUESDAY, FEBRUARY 27, 2014

    E-Print Network [OSTI]

    SEA LEVEL RISE, COASTAL RISK, ADAPTATION OPTIONS TUESDAY, FEBRUARY 27, 2014 For More Information@odu.edu "Sea Level Rise, Coastal Risk, and Adaptation Options" "Looking at what we know about sea level rise will be explored. A special look will be taken at the Philippines and its situation with sea level rise." Skip

  13. COUNTING DESCENTS, RISES, AND LEVELS, WITH PRESCRIBED FIRST ELEMENT, IN WORDS

    E-Print Network [OSTI]

    Kitaev, Sergey

    COUNTING DESCENTS, RISES, AND LEVELS, WITH PRESCRIBED FIRST ELEMENT, IN WORDS Sergey Kitaev1 the distribution of descents, levels, and rises according to whether the first letter of the descent, rise 0654060 1 #12;2 COUNTING DESCENTS, RISES, AND LEVELS, WITH PRESCRIBED FIRST ELEMENT, IN WORDS Subsequently

  14. Plume Rise and Dispersion of Emissions from Low Level Buoyant Sources in Urban Areas

    E-Print Network [OSTI]

    Pournazeri, Sam

    2012-01-01T23:59:59.000Z

    layer. The vertical profile of wind speed (Fig. 8-3g, h)by assuming that wind speed has both vertical and horizontalthat the vertical profile of horizontal wind speed matches

  15. A field evaluation of experimental passive railroad-highway grade crossing warning systems

    E-Print Network [OSTI]

    Beitler, Michael Morgan

    2012-06-07T23:59:59.000Z

    . 18 18 23 28 40 40 42 42 47 50 CHAPI'ER V CONCLUSIONS CONCLUSIONS RECOMMENDATIONS Page 59 59 60 REFERENCES 62 APPENDIX A FIELD DATA FORMS . APPENDIX B TEST SITE DESCRIPTIONS APPENDIX C SPEED GRAPHS AND SUMMARIES... TO TRAINS Sign Page Figure 4. Experimental Sign System with YIELD TO TRAINS Sign . . . . . 20 Figure 5. Experimental Sign System with LOOK FOR TRAINS Sign . . . . 22 Figure 6. Texas Counties Selected for Study Sites Figure 7. Results of Driver Opinion...

  16. Correlation of the Texas Highway Department Cone Penetrometer Test with the drained shear strength of cohesionless soils

    E-Print Network [OSTI]

    Cozart, George Davis

    1975-01-01T23:59:59.000Z

    the penetrometer to be seated 4 in. (102 mm), driven 1 ft. (. 305 m), and the disturbed material removed to a depth of 1 ft. (. 305 m) below the penetrated soil. Soil Pro erties Other than Shear Stren th. -- The soil properties other than shear strength... GRAY FIRM SILTY CLAY 10. 3 124. 6 10 FIG. 3. - LOG OF BORING I SITE A ? STATE HIGHWAY 30. ( I ft = . 305 m I I pcf = 16. 01 k g/m~ ) 13 DESCRIPTION OF STRATUM O o& ~ v) ll. Ch z ~Ko z a- O O I- 0 o N z u v) ~&) Q&n&+ LLj cc o QQ zN IU...

  17. Nuclear reactor control rod cluster for enthalpy rise compensation

    SciTech Connect (OSTI)

    Freeman, T.R.

    1987-07-07T23:59:59.000Z

    This patent describes a control arrangement for use with a nuclear fuel assembly having guide thimbles to provide enthalpy rise compensation, comprising: (a) a spider assembly; and (b) control rodlets containing neutron absorber material, supported at their upper ends from the spider assembly in a pattern which matches that of the guide thimbles and extending generally parallel to one another downwardly for insertion into the guide thimbles of the fuel assembly; (c) the control rodlets arranged in a cluster having a higher axial neutron absorption capability at an upper portion than at a lower portion; each control rodlet varying in axial neutron absorption capability from every other rodlet.

  18. Rising Sea Levels Due to Global Warming Are Unstoppable

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassive Solar HomePromisingStories »SubmitterJ. Norby (2007)Rising Sea Levels Due to

  19. Rising global temperatures accelerate drought-induced forest mortality

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassive Solar HomePromisingStories »SubmitterJ. Norby (2007)Rising Sea Levels

  20. Rising global temperatures accelerate drought-induced forest mortality

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassive Solar HomePromisingStories »SubmitterJ. Norby (2007)Rising Sea

  1. A Rising Star: Solid-State Lighting | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-Up from theDepartment(October-DecemberBasedToward a MoreA Rising Star: Solid-State

  2. Effects of engine speed, fueling rate, and combustion phasing on the thermal stratification required to limit HCCI knocking intensity.

    SciTech Connect (OSTI)

    Sjoberg, Magnus; Dec, John E.

    2004-12-01T23:59:59.000Z

    Thermal stratification has the potential to reduce pressure-rise rates and allow increased power output for HCCI engines. This paper systematically examines how the amount of thermal stratification of the core of the charge has to be adjusted to avoid excessive knock as the engine speed and fueling rate are increased. This is accomplished by a combination of multi-zone chemical-kinetics modeling and engine experiments, using iso-octane as the fuel. The experiments show that, for a low-residual engine configuration, the pressure traces are self-similar during changes to the engine speed when CA50 is maintained by adjusting the intake temperature. Consequently, the absolute pressure-rise rate measured as bar/ms increases proportionally with the engine speed. As a result, the knocking (ringing) intensity increases drastically with engine speed, unless counteracted by some means. This paper describes how adjustments of the thermal width of the in-cylinder charge can be used to limit the ringing intensity to 5 MW/m2 as both engine speed and fueling are increased. If the thermal width can be tailored without constraints, this enables smooth operation even for combinations of high speed, high load, and combustion phasing close to TDC. Since large alterations of the thermal width of the charge are not always possible, combustion retard is considered to reduce the requirement on the thermal stratification. The results show that combustion retard carries significant potential since it amplifies the benefit of a fixed thermal width. Therefore, the thermal stratification required for operation with an acceptable knocking intensity can be decreased substantially by the use of combustion retard. This enables combinations of high engine speed and high fueling rate even for operation with the naturally occurring thermal stratification. However, very precise control of the combustion phasing will likely be required for such operation.

  3. Wind Speed Forecasting for Power System Operation

    E-Print Network [OSTI]

    Zhu, Xinxin

    2013-07-22T23:59:59.000Z

    In order to support large-scale integration of wind power into current electric energy system, accurate wind speed forecasting is essential, because the high variation and limited predictability of wind pose profound challenges to the power system...

  4. Energy Savings of Variable Speed Motors

    E-Print Network [OSTI]

    Fishel, F. D.

    1979-01-01T23:59:59.000Z

    This paper investigates the energy savings available by utilizing variable speed motors on pump and fan applications. Conventional control of flow or pressure in process plants is normally accomplished by throttling the various streams with control...

  5. Low Speed Unsteady Aerodynamics Soumitra Banerjee*

    E-Print Network [OSTI]

    Patil, Mayuresh

    Low Speed Unsteady Aerodynamics Soumitra Banerjee* Virginia Polytechnic Institute and State University, Blacksburg, Virginia, 24061 Unsteady aerodynamics is the study of fluid flow, where the flow field changes with time. The unsteadiness is significant in many aerodynamic applications; few examples

  6. Speed selection for coupled wave equations

    E-Print Network [OSTI]

    Mariano Cadoni; Giuseppe Gaeta

    2015-01-13T23:59:59.000Z

    We discuss models for coupled wave equations describing interacting fields, focusing on the speed of travelling wave solutions. In particular, we propose a general mechanism for selecting and tuning the speed of the corresponding (multi-component) travelling wave solutions under certain physical conditions. A number of physical models (molecular chains, coupled Josephson junctions, propagation of kinks in chains of adsorbed atoms and domain walls) are considered as examples.

  7. The rise of the afterglow in GRB 050820a

    E-Print Network [OSTI]

    F. Genet; F. Daigne; R. Mochkovitch

    2007-07-06T23:59:59.000Z

    The early optical afterglow of GRB 050820a recorded by the RAPTOR telescope shows both a contribution from the prompt emission and the initial rise of the afterglow. It is therefore well-suited for the study of the dynamical evolution of the GRB ejecta when it first undergoes the decelerating effect of the environment. This is a complex phase where the internal, reverse, and forward shocks can all be present simultaneously. We have developed a simplified model that can follow these different shocks in an approximate, but self-consistent way. It is applied to the case of GRB 050820a to obtain the prompt and afterglow light curves. We show that the rise of the afterglow during the course of the prompt emission has some important consequences. The reverse shock propagates back into the ejecta before internal shocks are completed, which affects the shape of the gamma-ray profile. We get the best results when the external medium has a uniform density, but obtaining a simultaneous fit of the prompt and afterglow emission is not easy. We discuss a few possibilities that could help to improve this situation.

  8. Wind speed vertical distribution at Mt. Graham

    E-Print Network [OSTI]

    Hagelin, S; Lascaux, F

    2010-01-01T23:59:59.000Z

    The characterization of the wind speed vertical distribution V(h) is fundamental for an astronomical site for many different reasons: (1) the wind speed shear contributes to trigger optical turbulence in the whole troposphere, (2) a few of the astroclimatic parameters such as the wavefront coherence time (tau_0) depends directly on V(h), (3) the equivalent velocity V_0, controlling the frequency at which the adaptive optics systems have to run to work properly, depends on the vertical distribution of the wind speed and optical turbulence. Also, a too strong wind speed near the ground can introduce vibrations in the telescope structures. The wind speed at a precise pressure (200 hPa) has frequently been used to retrieve indications concerning the tau_0 and the frequency limits imposed to all instrumentation based on adaptive optics systems, but more recently it has been proved that V_200 (wind speed at 200 hPa) alone is not sufficient to provide exhaustive elements concerning this topic and that the vertical d...

  9. A Multivariate Analysis of Freeway Speed and Headway Data

    E-Print Network [OSTI]

    Zou, Yajie

    2013-11-11T23:59:59.000Z

    key process is the generation of entry vehicle speeds and vehicle arrival times. It is helpful to find desirable mathematical distributions to model individual speed and headway values, because the individual vehicle speed and arrival time...

  10. Correlation of flame speed with stretch in turbulent premixed methane/air flames

    SciTech Connect (OSTI)

    Chen, J.H.; Im, H.G.

    1998-03-01T23:59:59.000Z

    Direct numerical simulations of two-dimensional unsteady premixed methane/air flames are performed to determine the correlation of flame speed with stretch over a wide range of curvatures and strain rates generated by intense two-dimensional turbulence. Lean and stoichiometric premixtures are considered with a detailed C{sub 1}-mechanism for methane oxidation. The computed correlation shows the existence of two distinct stable branches. It further shows that exceedingly large negative values of stretch can be obtained solely through curvature effects which give rise to an overall nonlinear correlation of the flame speed with stretch. Over a narrower stretch range, {minus}1 {le} Ka {le} 1, which includes 90% of the sample, the correlation is approximately linear, and hence, the asymptotic theory for stretch is practically applicable. Overall, one-third of the sample has negative stretch. In this linear range, the Markstein number associated with the positive branch is determined and is consistent with values obtained from comparable steady counterflow computations. In addition to this conventional positive branch, a negative branch is identified. This negative branch occurs when a flame cusp, with a center of curvature in the burnt gases, is subjected to intense compressive strain, resulting in a negative displacement speed. Negative flame speeds are also encountered for extensive tangential strain rates exceeding a Karlovitz number of unity, a value consistent with steady counterflow computations.

  11. Wind speed modeled as a semi-Markov process with memory

    E-Print Network [OSTI]

    D'Amico, Guglielmo; Prattico, Flavio

    2012-01-01T23:59:59.000Z

    The increasing interest in renewable energy, particularly in wind, has given rise to the necessity of accurate models for the generation of good synthetic wind speed data. Markov chains are often used with this purpose but better models are needed to reproduce the statistical properties of wind speed data. In a previous paper we showed that semi-Markov processes are more appropriate for this purpose but to reach an accurate reproduction of real data features high order model should be used. In this work we introduce an indexed semi-Markov process that is able to fit real data. We downloaded a database, freely available from the web, in which are included wind speed data taken from L.S.I. -Lastem station (Italy) and sampled every 10 minutes. We then generate synthetic time series for wind speed by means of Monte Carlo simulations. The time lagged autocorrelation is then used to compare statistical properties of the proposed model with those of real data and also with a synthetic time series generated though a ...

  12. A study of the effect of posted speed limits on traffic speeds

    E-Print Network [OSTI]

    Rowan, Neilon Joyce

    2012-06-07T23:59:59.000Z

    . 60 C 50 JJ 40 Be fore After tti 0 U Ol DO 4) ts U U C 4) C U 4) I ) 4) 0 40 30 0 20 10 4 t 13. 0 14. 0 Ni 1 epos ts - S. H. 36 Location D-12 - West Columbia CI Be fore IED After 15. 0 FIGURE V. 11, LUSTRAT10N OF A... Distribution Curves for No Change in the Original 60-Nile-Par-Hour Speed Limit in District 12. Each Curve Represents Data Prom 7 Spot Speed Studies in 4 Locations. 37 12. 13. Cumulative Speed Distribution Curves for a Change in Speed Limit From 60 to 55...

  13. Variable Speed Pumping: A Guide to Successful Applications -...

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

    Variable Speed Pumping: A Guide to Successful Applications - Executive Summary Variable Speed Pumping: A Guide to Successful Applications - Executive Summary This document...

  14. Energy Department Announces $10 Million to Speed Enhanced Geothermal...

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

    to Speed Enhanced Geothermal Systems into the Market Energy Department Announces 10 Million to Speed Enhanced Geothermal Systems into the Market February 24, 2014 - 11:46am...

  15. Advanced Variable Speed Air-Source Integrated Heat Pump 2013...

    Energy Savers [EERE]

    Advanced Variable Speed Air-Source Integrated Heat Pump 2013 Peer Review Advanced Variable Speed Air-Source Integrated Heat Pump 2013 Peer Review Emerging Technologies Project for...

  16. Broadband marine MT exploration of the East Pacific Rise at 9500 Kerry Key and Steven Constable

    E-Print Network [OSTI]

    Key, Kerry

    Broadband marine MT exploration of the East Pacific Rise at 9°°500 N Kerry Key and Steven Constable., and S. Constable, Broadband marine MT exploration of the East Pacific Rise at 9°500 N, Geophys. Res

  17. The grand strategies of rising powers: reassurance, coercion, and balancing responses

    E-Print Network [OSTI]

    Glosny, Michael A

    2012-01-01T23:59:59.000Z

    This dissertation asks: what explains variation in how other great powers respond to rising powers? It tries to explain why the emergence of a rising power sometimes leads to tension, rivalry, and war, and other times leads ...

  18. Fact #778: May 6, 2013 Vehicles per Thousand Persons Rising Quickly...

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

    8: May 6, 2013 Vehicles per Thousand Persons Rising Quickly in China and India Fact 778: May 6, 2013 Vehicles per Thousand Persons Rising Quickly in China and India The number of...

  19. Effect of Sea Level Rise on Energy Infrastructure in Four Major...

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

    Effect of Sea Level Rise on Energy Infrastructure in Four Major Metropolitan Areas Effect of Sea Level Rise on Energy Infrastructure in Four Major Metropolitan Areas The Office of...

  20. E-Print Network 3.0 - accelerated sea-level rise Sample Search...

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

    sea-level rise Search Powered by Explorit Topic List Advanced Search Sample search results for: accelerated sea-level rise Page: << < 1 2 3 4 5 > >> 1 The EGU General Assembly 2009...

  1. Precursor systems analyses of automated highway systems: Commercial vehicle and transit ahs analysis. Volume 6. Final report, September 1993-February 1995

    SciTech Connect (OSTI)

    Bottiger, F.; Chemnitz, H.D.; Doorman, J.; Franke, U.; Zimmerman, T.

    1995-03-01T23:59:59.000Z

    This document is the final report of the Automated Highway System (AHS). The activities of Commercial Vehicle and Transit AHS Analysis are reported on in this document. This document type is resource materials. This volume is the six in a series. There are nine other volumes in the series.

  2. INTRODUCTION TEA 21 (Transportation Equity Act 21) of 1998 allows heavy sugarcane truck loads on Louisiana interstate highways.These heavier loads are currently being

    E-Print Network [OSTI]

    Harms, Kyle E.

    , are significant parameters of highway traffic.TEA 21 is allowing sugarcane trucks to haul loads up to 100,000 lb that the study include vehicles hauling sugarcane biomass for alternative fuel and electricity generation. DuringINTRODUCTION TEA 21 (Transportation Equity Act 21) of 1998 allows heavy sugarcane truck loads

  3. Statistical Modeling of Freight Train Derailments at Highway-Rail Level Crossings Samantha G. Chadwick, C. Tyler Dick, Mohd Rapik Saat, Christopher P.L. Barkan

    E-Print Network [OSTI]

    Barkan, Christopher P.L.

    discusses level-crossing-caused freight train derailments in a larger risk-analysis context. We generalize an additional tool for decision makers to prioritize level crossings upgrades and/or closures. 2. Development reduction in the risk of level crossings to North American highway users over the past several decades. Much

  4. Earth'sFuture Sea level rise and its coastal impacts

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Earth'sFuture Sea level rise and its coastal impacts Anny Cazenave1 and Gonéri Le Cozannet2 1LEGOS and land ice melt in turn are causing sea level to rise. Sea level rise and its impacts on coastal zones and public. In this review paper, we summarize the most up-to-date knowledge about sea level rise and its

  5. Final Report for Sea-level Rise Response Modeling for San Francisco Bay Estuary Tidal

    E-Print Network [OSTI]

    Fleskes, Joe

    i Final Report for Sea-level Rise Response Modeling for San Francisco Bay Estuary Tidal Marshes Refuge in northern San Francisco Bay, California. #12;iii Final Report for Sea-level Rise Response)................................................................... 7 Sea-level rise scenario model inputs

  6. Rapid sea level rise along the Antarctic margins driven by increased glacial1 Supplementary material4

    E-Print Network [OSTI]

    Naveira Garabato, Alberto

    Rapid sea level rise along the Antarctic margins driven by increased glacial1 discharge2 3 of the signal of anomalously rapid sea level rise in the41 Antarctic subpolar seas at the core of this study.42, the Antarctic coastal sea level rise signal is significantly different from47 zero with 95% confidence

  7. Assessment of Inundation Risk from Sea Level Rise and Storm Surge in Northeastern Coastal National Parks

    E-Print Network [OSTI]

    Wang, Y.Q. "Yeqiao"

    Assessment of Inundation Risk from Sea Level Rise and Storm Surge in Northeastern Coastal National of inundation risk from sea level rise and storm surge in northeastern coastal national parks. Journal of Coastal Research, 00(0), 000­000. Coconut Creek (Florida), ISSN 0749-0208. Sea level rise and an increase

  8. Abrupt Climate Change linked to Sea-level Rise from Freshwater

    E-Print Network [OSTI]

    Fountain, Andrew G.

    Abrupt Climate Change linked to Sea-level Rise from Freshwater Outbursts affecting the THC Matt-sheet decay, sea-level rise and abrupt climate change · Torbjorn E. Tornqvist, Marc P. Hijma, 2012. Reduced) Flesche Kleiven, et al., 2008. #12;Overview · Holocene sea level rise · Tornqvist and Hijima ­ Lake

  9. Does sea-level rise have an impact on saltwater intrusion? Sun Woo Chang a

    E-Print Network [OSTI]

    Clement, Prabhakar

    Does sea-level rise have an impact on saltwater intrusion? Sun Woo Chang a , T. Prabhakar Clement a 22 June 2011 Keywords: Saltwater intrusion Sea-level rise Coastal aquifer Climate change Confined, the adverse intrusion effects induced by sea-level rise. A detailed numerical study using the MODFLOW

  10. Spatial variability of sea level rise due to water impoundment behind dams

    E-Print Network [OSTI]

    Conrad, Clint

    Click Here for Full Article Spatial variability of sea level rise due to water impoundment behind global sea level by 30.0 mm and decreasing the rate of sea level rise. The load from impounded water change on sea level rise sources, which include thermal expansion of seawater and the melting of glaciers

  11. Svalbard glacier elevation changes and contribution to sea level rise Christopher Nuth,1

    E-Print Network [OSTI]

    Kääb, Andreas

    Svalbard glacier elevation changes and contribution to sea level rise Christopher Nuth,1 Geir contribution to global sea level rise of 0.026 mm yr?1 sea level equivalent. Citation: Nuth, C., G. Moholdt, J level rise, J. Geophys. Res., 115, F01008, doi:10.1029/2008JF001223. 1. Introduction [2] The most recent

  12. Infilling and flooding of the Mekong River incised valley during deglacial sea-level rise

    E-Print Network [OSTI]

    Wetzel, Andreas

    Infilling and flooding of the Mekong River incised valley during deglacial sea-level rise Rik is related with the low shelf gradient and a strong acceleration of the East Asian sea-level rise from 34 depositional systems change into estuaries and eventually drown when sea-level rise overtakes the sediment

  13. Effective sea-level rise and deltas: Causes of change and human dimension implications

    E-Print Network [OSTI]

    New Hampshire, University of

    Effective sea-level rise and deltas: Causes of change and human dimension implications Jason P January 2006 Abstract An assessment is made of contemporary effective sea-level rise (ESLR) for a sample of eustatic sea-level rise, the natural gross rate of fluvial sediment deposition and subsidence

  14. ENUMERATION OF PARTITIONS BY RISES, LEVELS AND DESCENTS Toufik Mansour and Augustine O. Munagi

    E-Print Network [OSTI]

    Breuer, Florian

    ENUMERATION OF PARTITIONS BY RISES, LEVELS AND DESCENTS Toufik Mansour and Augustine O. Munagi of integers, we study this statistic among the set partitions, as well as the numbers of rises and levels. We the statistics of numbers of rises, levels and descents among set partitions expressed as canonical sequences

  15. Adaptive Management of Migratory Birds Under Sea Level Rise Samuel Nicol

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Adaptive Management of Migratory Birds Under Sea Level Rise Samuel Nicol CSIRO Ecosystem Sciences the East Asian-Australasian flyway given uncertainty about the rate of sea level rise. The non-Australasian (EAA) fly- way given uncertainty about the rate of sea level rise and its effect on shorebird

  16. Coastal Inundation due to Tide, Surge, Waves, and Sea Level Rise at Naval Station Norfolk

    E-Print Network [OSTI]

    US Army Corps of Engineers

    Coastal Inundation due to Tide, Surge, Waves, and Sea Level Rise at Naval Station Norfolk Honghai of future sea level rise (SLR) scenarios and to evaluate the potential coastal inundation at Naval Station and sea level rise threats to coastal residents and coastal military facilities, the US Strategic

  17. RISES, LEVELS, DROPS AND "+" SIGNS IN COMPOSITIONS: EXTENSIONS OF A PAPER BY

    E-Print Network [OSTI]

    Heubach, Silvia

    RISES, LEVELS, DROPS AND "+" SIGNS IN COMPOSITIONS: EXTENSIONS OF A PAPER BY ALLADI AND HOGGATT S, levels (a summand followed by itself), rises (a summand followed by a larger one), and drops (a summand of levels, rises and drops for compositions, as well as interesting connections between these quantities

  18. Meteorologically driven trends in sea level rise Alexander S. Kolker1

    E-Print Network [OSTI]

    Hameed, Sultan

    Meteorologically driven trends in sea level rise Alexander S. Kolker1 and Sultan Hameed2 Received] Determining the rate of global sea level rise (GSLR) during the past century is critical to understanding a suite of coastal oceanographic processes. These findings reduce variability in regional sea level rise

  19. Coastal flood damage and adaptation costs under 21st century sea-level rise

    E-Print Network [OSTI]

    Marzeion, Ben

    Coastal flood damage and adaptation costs under 21st century sea-level rise Jochen Hinkela,1st century sea-level rise are assessed on a global scale taking into account a wide range- ment and sea-level rise. Uncertainty in global mean and regional sea level was derived from four

  20. Anthropogenic forcing dominates sea level rise since 1850 S. Jevrejeva,1

    E-Print Network [OSTI]

    Binford, Michael W.

    Anthropogenic forcing dominates sea level rise since 1850 S. Jevrejeva,1 A. Grinsted,2 and J. C October 2009. [1] The rate of sea level rise and its causes are topics of active debate. Here we use 200 years sea level rise is mostly associated with anthropogenic factors. Only 4 ± 1.5 cm (25

  1. Sea level rise implications on shoreline changes: expectations from a retrospective analysis

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Sea level rise implications on shoreline changes: expectations from a retrospective analysis Gonéri de Recherche et de Formation en Calcul Scientifique (Cerfacs) Sea level rise is a major consequence level rise is up to 3 times the global mean rate (estimated as 3.5 mm per year since the early 1990s

  2. Estimating the economic cost of sea-level rise Masahiro Sugiyama

    E-Print Network [OSTI]

    Estimating the economic cost of sea-level rise by Masahiro Sugiyama Bachelor of Science in Earth To improve the estimate of economic costs of future sea-level rise associated with global climate change, the thesis generalizes the sea-level rise cost function originally proposed by Fankhauser, and applies

  3. PALeo-constraints on SEA-level rise (PALSEA) -a PAGES/IMAGES working group

    E-Print Network [OSTI]

    Siddall, Mark

    PALeo-constraints on SEA-level rise (PALSEA) - a PAGES/IMAGES working group Coordinators: Mark for the reduction in ice sheets and subsequent rise in sea level over the next century are highly uncertain rise. Interglacial sea levels constrain the global sensitivity of sea-level to radiative forcing. Well

  4. ELSEVIER Marine Geology 124 (1995) 137-159 A sea-level rise curve

    E-Print Network [OSTI]

    Royer, Dana

    ELSEVIER Marine Geology 124 (1995) 137-159 A sea-level rise curve Koren R. Nydick, Alison B. from emissions of greenhouse gases. 1. Introduction 1.1. Climate and sea-level rise Global sea level has been of peat deposits in salt marshes provide insight into the rates of relative sea-level rise (RSLR

  5. Thermosteric sea level rise, 19552003 J. I. Antonov, S. Levitus, and T. P. Boyer

    E-Print Network [OSTI]

    Thermosteric sea level rise, 1955­­2003 J. I. Antonov, S. Levitus, and T. P. Boyer National/year to global sea level rise. About half of this thermosteric trend is due to warming of the Atlantic Ocean), Thermosteric sea level rise, 1955­2003, Geophys. Res. Lett., 32, L12602, doi:10.1029/2005GL023112. 1

  6. Electrical structure beneath the northern MELT line on the East Pacific Rise at 15450

    E-Print Network [OSTI]

    Brest, Universit de

    Electrical structure beneath the northern MELT line on the East Pacific Rise at 15450 S Kiyoshi] The electrical structure of the upper mantle beneath the East Pacific Rise (EPR) at 15450 S is imaged structure beneath the northern MELT line on the East Pacific Rise at 15450 S, Geophys. Res. Lett., 33, L

  7. Advanced Hybrid Propulsion and Energy Management System for High Efficiency, Off Highway, 240 Ton Class, Diesel Electric Haul Trucks

    SciTech Connect (OSTI)

    Richter, Tim; Slezak, Lee; Johnson, Chris; Young, Henry; Funcannon, Dan

    2008-12-31T23:59:59.000Z

    The objective of this project is to reduce the fuel consumption of off-highway vehicles, specifically large tonnage mine haul trucks. A hybrid energy storage and management system will be added to a conventional diesel-electric truck that will allow capture of braking energy normally dissipated in grid resistors as heat. The captured energy will be used during acceleration and motoring, reducing the diesel engine load, thus conserving fuel. The project will work towards a system validation of the hybrid system by first selecting an energy storage subsystem and energy management subsystem. Laboratory testing at a subscale level will evaluate these selections and then a full-scale laboratory test will be performed. After the subsystems have been proven at the full-scale lab, equipment will be mounted on a mine haul truck and integrated with the vehicle systems. The integrated hybrid components will be exercised to show functionality, capability, and fuel economy impacts in a mine setting.

  8. Measure Guideline: Replacing Single-Speed Pool Pumps with Variable Speed Pumps for Energy Savings

    SciTech Connect (OSTI)

    Hunt, A.; Easley, S.

    2012-05-01T23:59:59.000Z

    The report evaluates potential energy savings by replacing traditional single-speed pool pumps with variable speed pool pumps, and provide a basic cost comparison between continued uses of traditional pumps verses new pumps. A simple step-by-step process for inspecting the pool area and installing a new pool pump follows.

  9. Variable speed operation of generators with rotor-speed feedback in wind power applications

    SciTech Connect (OSTI)

    Muljadi, E.; Butterfield, C.P.; Migliore, P.

    1995-11-01T23:59:59.000Z

    The use of induction generators in wind power applications has been common since the early development of the wind industry. Most of these generators operate at fixed frequency and are connected directly to the utility grid. Unfortunately, this mode of operation limits the rotor speed to a specific rpm. Variable-speed operation is preferred in order to facilitate maximum energy capture over a wide range of wind speeds. This paper explores variable-speed operating strategies for wind turbine applications. The objectives are to maximize energy production, provide controlled start-up and reduce torque loading. This paper focuses on optimizing the energy captured by operating at maximum aerodynamic efficiency at any wind speed. The control strategy we analyze uses rotor speed and generator power as the feedback signals. In the normal operating region, rotor speed is used to compute a target power that corresponds to optimum operation. With power as the control objective, the power converter and generator are controlled to track the target power at any rpm. Thus, the torque-speed characteristic of the generator is shaped to optimize the energy capture. The target power is continuously updated at any rpm. in extreme areas of the operating envelope, during start-up, shutdown, generator overload, or overspeed, different strategies driven by other system considerations must be used.

  10. Variable speed operation of generators with rotor-speed feedback in wind power applications

    SciTech Connect (OSTI)

    Muljadi, E.; Butterfield, C.P.; Migliore, P. [National Renewable Energy Lab., Golden, CO (United States). Wind Technology Div.

    1996-10-01T23:59:59.000Z

    The use of induction generators in wind power applications has been common since the early development of the wind industry. Most of these generators operate at fixed frequency and are connected directly to the utility grid. Unfortunately, this mode of operation limits the rotor speed to a specific rpm. Variable-speed operation is preferred in order to facilitate maximum energy capture over a wide range of wind speeds. This paper explores variable-speed operating strategies for wind turbine applications. The objectives are to maximize energy production, provide controlled start-up and reduce torque loading. This paper focuses on optimizing the energy captured by operating at maximum aerodynamic efficiency at any wind speed. The control strategy analyzed uses rotor speed and generator power as the feedback signals. In the normal operating region, rotor speed is used to compute a target power that corresponds to optimum operation. With power as the control objective, the power converter and generator are controlled to track the target power at any rpm. Thus, the torque-speed characteristic of the generator is shaped to optimize the energy capture. The target power is continuously updated at any rpm. In extreme areas of the operating envelope, during start-up, shutdown, generator overload, or overspeed, different strategies driven by other system considerations must be used.

  11. Variable speed operation of generators with rotor-speed feedback in wind power applications

    SciTech Connect (OSTI)

    Muljadi, E.; Butterfield, C.P.; Migliore, P. [National Renewable Energy Lab., Golden, CO (United States)

    1996-11-01T23:59:59.000Z

    The use of induction generators in wind power applications has been common since the early development of the wind industry. Most of these generators operate at fixed frequency and are connected directly to the utility grid. Unfortunately, this mode of operation limits the rotor speed to a specific rpm. Variable speed operation is preferred in order to facilitate maximum energy capture over a wide range of wind speeds. This paper explores variable speed operating strategies for wind turbine applications. The objectives are to maximize energy production, provide controlled start-up, and reduce torque loading. This paper focuses on optimizing the energy captured by operating at maximum aerodynamic efficiency at any wind speed. The control strategy the authors analyze uses rotor speed and generator power as the feedback signals. In the normal operating region, rotor speed is used to compute a target power that corresponds to optimum operation. With power as the control objective, the power converter and generator are controlled to track the target power at any rpm. Thus, the torque-speed characteristic of the generator is shaped to optimize the energy capture. The target power is continuously updated at any rpm. In extreme areas of the operating envelope, during start-up, shutdown, generator overload, or overspeed, different strategies driven by other system considerations must be used.

  12. Adjustable speed drive for residential applications

    SciTech Connect (OSTI)

    Jungreis, A.M.; Kelley, A.W. [North Carolina State Univ., Raleigh, NC (United States). Dept. of Electrical and Computer Engineering] [North Carolina State Univ., Raleigh, NC (United States). Dept. of Electrical and Computer Engineering

    1995-11-01T23:59:59.000Z

    This paper describes a demonstration of an adjustable speed drive suitable for use in residential applications such as compressors and fans in heat pumps, air conditioners, and refrigerators. The adjustable speed drive uses only a four-diode rectifier and a six-transistor six-diode inverter and does not require a source-frequency filter inductor or capacitor. Motor speed is adjusted with source-frequency phase control eliminating the switching loss and electromagnetic interference caused by the more commonly used high-frequency pulse-width modulation. Low source-current distortion and high power factor are obtained at a full-load operating point which is found using a parametric analysis.

  13. Pattern speed evolution and bar reformation

    E-Print Network [OSTI]

    F. Combes

    2008-11-05T23:59:59.000Z

    Bars in spiral galaxies can weaken through gas inflow towards the center, and angular momentum transfer. Several bar episodes can follow one another in the life of the galaxy, if sufficient gas is accreted from the intergalactic medium to revive young disks. Pattern speeds of the successive bars are different, due to mass concentration, or increased velocity dispersion of the remaining stellar component. In the same time, the spiral galaxy evolves in morphological type. Numerical simulations are presented, trying to correlate type and bar pattern speeds.

  14. Exhaust Aftertreatment and Low Pressure Loop EGR Applied to an Off-Highway Engine

    SciTech Connect (OSTI)

    Baumgard, Kirby; Triana, Antonio; Johnson, John; Yang, Song; Premchand, Kiran

    2006-01-30T23:59:59.000Z

    The goal of the project was to demonstrate that low pressure loop EGR incorporating a diesel oxidation catalyst (DOC) and a diesel particulate filter (DPF) can be applied to an off-highway engine to meet Tier 3 (Task I) and Interim Tier 4 (Task II) off-road emissions standards. Task I data was collected using a John Deere 8.1 liter engine modified with a low pressure loop EGR system. The engine and EGR system was optimized and final data over the ISO 8178 eight mode test indicated the NOx emissions were less than 4 g/kWh and the PM was less than 0.02 g/kWh which means the engine met the Tier 3 off-road standard. Considerable experimental data was collected and used by Michigan Tech University to develop and calibrate the MTU-Filter 1D DPF model. The MTU-Filter 1D DPF code predicts the particulate mass evolution (deposition and oxidation) in the diesel particulate filter (DPF) during simultaneous loading and during thermal and NO{sub 2}-assisted regeneration conditions. It also predicts the pressure drop across the DPF, the flow and temperature fields, the solid filtration efficiency and the particle number distribution downstream of the DPF. A DOC model was also used to predict the NO{sub 2} upstream of the DPF. The DPF model was calibrated to the experimental data at temperatures from 230 C to 550 C, and volumetric flow rates from 9 to 39 actual m{sup 3}/min. Model predictions of the solid particulate mass deposited in the DPF after each loading and regeneration case were in agreement within +/-10g (or +/-10%) of experimental measurements at the majority of the engine operating conditions. The activation temperatures obtained from the model calibration are in good agreement with values reported in the literature and gave good results in the model calibration by using constant pre-exponential factors throughout the entire range of conditions evaluated. The average clean filter permeability was 2.372 x 10{sup -13} m{sup 2}. Estimates of the solid particulate mass packing density inside the porous wall were 1 to 5 kg/m{sup 3}; and percolation factors were 0.81 to 0.97. Average particulate layer permeability was 1.95 x 10{sup -14} m{sup 2}. Solid particulate layer packing density values were between 11 and 128 kg/m{sup 3}. These values were in good agreement with the Peclet number correlation theory reported in the literature. NO{sub 2}-assisted oxidation of PM in the DPF showed experimentally that a significant reduction of the pressure drop can be achieved (<8 kPa) when sufficient NO{sub 2} (>120 ppm) is available and high exhaust gas temperatures ({approx}360-460 C) can be maintained, even at high PM loadings (low NO{sub 2}/solid PM ratios). The CRT{trademark} (DOC-DPF system) showed limited advantages when used with high PM rates (low NOx/PM ratios) in combination with a low pressure loop EGR strategy for a continuous operation of an engine-exhaust aftertreatment system. The 8.1-liter engine was not designed for low-pressure loop EGR and when the EGR was added the NOx emissions were reduced but the PM emissions increased. This corresponds to the well known NOx to PM relationship in which if the NOx is reduced the PM emissions increase. In order for this technology to be successful on this engine family, the engine out PM emissions must be reduced. These results led to Task II. Task II objective was to meet the interim Tier 4 standards using the CCRT{trademark} technology applied to an advanced 6.8 liter John Deere engine. The advanced engine incorporated a 4 valve head, required additional EGR, an advanced high pressure common rail fuel system and a better matched turbocharger. The EGR system was optimized and the goal of less than 2 g/kWh NOx and less than 0.02 g/kWh PM were achieved over the 8 mode test. Again, experimental data was provided to Michigan Tech to study the passive regeneration of the CCRT{trademark} technology. Two computer models, i.e., the MTU 1-D DOC model and the MTU 1-D 2-layer CPF model were developed as part of this research and calibrated using the data obtained from experiments. The 1-D D

  15. Dynamic simulation of dual-speed wind turbine generation

    SciTech Connect (OSTI)

    Muljadi, E.; Butterfield, C.P.

    1996-10-01T23:59:59.000Z

    Induction generators have been used since the early development of utility-scale wind turbine generation. An induction generator is the generator of choice because of its ruggedness, and low cost. With an induction generator, the operating speed of the wind turbine is limited to a narrow range (almost constant speed). Dual- speed operation can be accomplished by using an induction generator with two different sets of winding configurations or by using two induction generators with two different rated speeds. With single- speed operation, the wind turbine operates at different power coefficients (Cp) as the wind speed varies. The operation at maximum Cp can occur only at a single wind speed. However, if the wind speed varies across a wider range, the operating Cp will vary significantly. Dual-speed operation has the advantage of enabling the wind turbine to operate at near maximum Cp over a wider range of wind-speeds. Thus, annual energy production can be increased. The dual-speed mode may generate less energy than a variable-speed mode; nevertheless, it offers an alternative to capture more energy than single-speed operation. In this paper, dual-speed operation of a wind turbine will be investigated. One type of control algorithm for dual- speed operation is proposed. Results from a dynamic simulation will be presented to show how the control algorithm works and how power, current and torque of the system vary as the wind turbine is exposed to varying wind speeds.

  16. On-chip high speed localized cooling using superlattice microrefrigerators

    E-Print Network [OSTI]

    Zhang, Y; Christofferson, J; Shakouri, A; Zeng, G H; Bowers, J E; Croke, E T

    2006-01-01T23:59:59.000Z

    cooling, microrefrigerators, optoelectronics, superlattice,in high power, high-speed optoelectronics devices, and

  17. CRYOPUMP MEASUREMENTS RELATING TO SAFETY, PUMPING SPEED, AND RADIATION OUTGASSING

    E-Print Network [OSTI]

    Graham, W.G.

    2011-01-01T23:59:59.000Z

    Fast Gas Pulse Typical Data for Dynamic Pumping Speed Measurements with Deuterium Plan View of Reactor

  18. Detour : Los Angeles River Speed Cinema

    E-Print Network [OSTI]

    Lee, Weifeng Victoria

    2010-01-01T23:59:59.000Z

    We live in the culture of speed; everything is on its way to become a faster version of itself tomorrow if it is not already there today. Automobile and cinema are two inventions at the turn of the 20th Century that brought ...

  19. Average Rate Speed Scaling Nikhil Bansal1

    E-Print Network [OSTI]

    Bunde, David

    energy. In this setting, the operating system must not only have a job selection policy to determine was deadline feasibility and the objective was to minimize the energy used. More precisely, each job i has of the speed to power function, this even spreading is energy optimal if the instance consists of only one job

  20. Average Rate Speed Scaling Nikhil Bansal

    E-Print Network [OSTI]

    Bunde, David

    energy. In this setting, the operating system must not only have a job selection policy to determine was deadline feasibility and the objective was to minimize the energy used. More precisely, each job i has of the speed to power function, this even spreading is energy optimal if the instance consists of only one job

  1. Speed estimation using single loop detector outputs

    E-Print Network [OSTI]

    Ye, Zhirui

    2009-05-15T23:59:59.000Z

    ...................................................................................10 2.1 Introduction ........................................................................................10 2.2 Vehicle Detectors ...............................................................................10 2.3 Description of the Speed....4 Hourly traffic volumes from the IH-35 test bed in Austin on Oct. 27, 2004 38 Fig 3.5 Layout of the simulated freeway section ...................................................... 41 Fig. 4.1 Average vehicle lengths over time...

  2. Speed estimation using single loop detector outputs

    E-Print Network [OSTI]

    Ye, Zhirui

    2008-10-10T23:59:59.000Z

    ...................................................................................10 2.1 Introduction ........................................................................................10 2.2 Vehicle Detectors ...............................................................................10 2.3 Description of the Speed....4 Hourly traffic volumes from the IH-35 test bed in Austin on Oct. 27, 2004 38 Fig 3.5 Layout of the simulated freeway section ...................................................... 41 Fig. 4.1 Average vehicle lengths over time...

  3. An investigation of passing operations on a rural, two-lane, two-way highway with centerline rumble strips

    E-Print Network [OSTI]

    Miles, Jeffrey David

    2005-02-17T23:59:59.000Z

    -centers. Pavement markings were striped over the CRSs. iv Data were collected using an innovative data collection system developed by the author through the Texas Transportation Institute (TTI). This system was mounted to a four-door sedan, and it consisted... of four concealed cameras that recorded the entire passing maneuver around the data collection vehicle. Data were collected at three different speeds during the daytime. The speeds were 55, 60, and 65 mph (15, 10, and 5 mph, respectively, under...

  4. High voltage electrical amplifier having a short rise time

    DOE Patents [OSTI]

    Christie, David J. (Pleasanton, CA); Dallum, Gregory E. (Livermore, CA)

    1991-01-01T23:59:59.000Z

    A circuit, comprising an amplifier and a transformer is disclosed that produces a high power pulse having a fast response time, and that responds to a digital control signal applied through a digital-to-analog converter. The present invention is suitable for driving a component such as an electro-optic modulator with a voltage in the kilovolt range. The circuit is stable at high frequencies and during pulse transients, and its impedance matching circuit matches the load impedance with the output impedance. The preferred embodiment comprises an input stage compatible with high-speed semiconductor components for amplifying the voltage of the input control signal, a buffer for isolating the input stage from the output stage; and a plurality of current amplifiers connected to the buffer. Each current amplifier is connected to a field effect transistor (FET), which switches a high voltage power supply to a transformer which then provides an output terminal for driving a load. The transformer comprises a plurality of transmission lines connected to the FETs and the load. The transformer changes the impedance and voltage of the output. The preferred embodiment also comprises a low voltage power supply for biasing the FETs at or near an operational voltage.

  5. A New Model to Construct Ice Stream Surface Elevation Profiles and Calculate Contributions to Sea-Level Rise

    E-Print Network [OSTI]

    Adachi, Yosuke

    2012-01-01T23:59:59.000Z

    to 21st-Century Sea-Level Rise. Science, 321, 1340; DOI:in the Face of Sea-Level Rise: A Hybrid Modeling Approachof ice sheets to sea-level rise. Bibliography Alcamo, J. et

  6. A Comparative Study of Passive versus Dynamic Sea-Level Rise Inundation Models for the Island of Kauai

    E-Print Network [OSTI]

    Bezore, Rhiannon Victoria Ann

    2014-01-01T23:59:59.000Z

    Consequences of sea-level rise and coastal erosion,Cultivated Crops Sea-level rise (m) Table 16 Waimea landCouncil, 2012, Sea-Level Rise for the Coasts of California,

  7. Shoreface Morphodynamics, Back Beach Variability, and Implications of Future Sea-Level Rise for California's Sandy Shorelines

    E-Print Network [OSTI]

    Harden, Erika Lynne

    2012-01-01T23:59:59.000Z

    change scenarios and sea-level rise estimates for thePilkey, O.H. (2004) Sea-level rise and shoreline retreat:and multi-decadal sea-level rise, Nature 453:1090-1093.

  8. Furman Lake Poinsett Highway/ Highway 276

    E-Print Network [OSTI]

    ) ..................................................J-4 · Athletics (IAB) ................................................. E-9 · Chaplain (CHP) ................................B-10 · Housing and Residential Life (ESC) .................J-22 · Human Resources (PAC

  9. Thermodynamics in variable speed of light theories

    E-Print Network [OSTI]

    Juan Racker; Pablo Sisterna; Hector Vucetich

    2009-11-30T23:59:59.000Z

    The perfect fluid in the context of a covariant variable speed of light theory proposed by J. Magueijo is studied. On the one hand the modified first law of thermodynamics together with a recipe to obtain equations of state are obtained. On the other hand the Newtonian limit is performed to obtain the nonrelativistic hydrostatic equilibrium equation for the theory. The results obtained are used to determine the time variation of the radius of Mercury induced by the variability of the speed of light ($c$), and the scalar contribution to the luminosity of white dwarfs. Using a bound for the change of that radius and combining it with an upper limit for the variation of the fine structure constant, a bound on the time variation of $c$ is set. An independent bound is obtained from luminosity estimates for Stein 2015B.

  10. Thermodynamics in variable speed of light theories

    SciTech Connect (OSTI)

    Racker, Juan [CONICET, Centro Atomico Bariloche, Avenida Bustillo 9500 (8400), San Carlos De Bariloche (Argentina); Facultad de Ciencias Astronomicas y Geofisicas, Universidad Nacional de La Plata, Paseo del Bosque S/N (1900), La Plata (Argentina); Sisterna, Pablo [Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350 (7600), Mar del Plata (Argentina); Vucetich, Hector [Facultad de Ciencias Astronomicas y Geofisicas, Universidad Nacional de La Plata, Paseo del Bosque S/N (1900), La Plata (Argentina)

    2009-10-15T23:59:59.000Z

    The perfect fluid in the context of a covariant variable speed of light theory proposed by J. Magueijo is studied. On the one hand the modified first law of thermodynamics together with a recipe to obtain equations of state are obtained. On the other hand the Newtonian limit is performed to obtain the nonrelativistic hydrostatic equilibrium equation for the theory. The results obtained are used to determine the time variation of the radius of Mercury induced by the variability of the speed of light (c), and the scalar contribution to the luminosity of white dwarfs. Using a bound for the change of that radius and combining it with an upper limit for the variation of the fine structure constant, a bound on the time variation of c is set. An independent bound is obtained from luminosity estimates for Stein 2015B.

  11. Wind Speed Data Analysis using Wavelet Transform

    E-Print Network [OSTI]

    S. Avdakovic; A. Lukac; A. Nuhanovic; M. Music

    AbstractRenewable energy systems are becoming a topic of great interest and investment in the world. In recent years wind power generation has experienced a very fast development in the whole world. For planning and successful implementations of good wind power plant projects, wind potential measurements are required. In these projects, of great importance is the effective choice of the micro location for wind potential measurements, installation of the measurement station with the appropriate measuring equipment, its maintenance and analysis of the gained data on wind potential characteristics. In this paper, a wavelet transform has been applied to analyze the wind speed data in the context of insight in the characteristics of the wind and the selection of suitable locations that could be the subject of a wind farm construction. This approach shows that it can be a useful tool in investigation of wind potential. KeywordsWind potential, Wind speed data, Wavelet transform.

  12. Gas Model of Gravitons with Light Speed

    E-Print Network [OSTI]

    Ming Chen; Yong-Chang Huang

    2014-06-17T23:59:59.000Z

    We first review some aspects of gravitational wave and the thermodynamic expression of Einstein field equations, these achieved conclusions allow people to think of Einstein's gravitational wave as a kind of sound wave in ordinary gas which propagates as an adiabatic compression wave. In the following, using the properties of photon gas in "white wall box", we find an analogous relationship between ordinary gas and photon gas through sound velocity formula. At last, by taking the ordinary gas as an intermediary, we find that gravitational wave is analogous to photon gas, or equally, gravitons are analogous to photons although they are different in some ways such as spins and coupling strengths, and these different properties don't affect their propagation speeds. Utilizing this analogous relationship, we achieve the gas model of gravitons and this model naturally gives out the light speed of gravitons

  13. Resonant speed meter for gravitational wave detection

    E-Print Network [OSTI]

    Atsushi Nishizawa; Seiji Kawamura; Masa-aki Sakagami

    2008-05-01T23:59:59.000Z

    Gravitational-wave detectors have been well developed and operated with high sensitivity. However, they still suffer from mirror displacement noise. In this paper, we propose a resonant speed meter, as a displacement noise-canceled configuration based on a ring-shaped synchronous recycling interferometer. The remarkable feature of this interferometer is that, at certain frequencies, gravitational-wave signals are amplified, while displacement noises are not.

  14. Data Capture Technique for High Speed Signaling

    DOE Patents [OSTI]

    Barrett, Wayne Melvin (Rochester, MN); Chen, Dong (Croton On Hudson, NY); Coteus, Paul William (Yorktwon Heights, NY); Gara, Alan Gene (Mount Kisco, NY); Jackson, Rory (Eastchester, NY); Kopcsay, Gerard Vincent (Yorktown Hieghts, NY); Nathanson, Ben Jesse (Teaneck, NY); Vranas, Paylos Michael (Bedford Hills, NY); Takken, Todd E. (Brewster, NY)

    2008-08-26T23:59:59.000Z

    A data capture technique for high speed signaling to allow for optimal sampling of an asynchronous data stream. This technique allows for extremely high data rates and does not require that a clock be sent with the data as is done in source synchronous systems. The present invention also provides a hardware mechanism for automatically adjusting transmission delays for optimal two-bit simultaneous bi-directional (SiBiDi) signaling.

  15. Energy curable compositions having improved cure speeds

    DOE Patents [OSTI]

    Halm, L.W.

    1993-05-18T23:59:59.000Z

    The composition and method provide improved physical properties and cure speed of polyurethane precursors, with or without free radical polymerizable monomers or oligomers present, by use of a two component catalyst system. The resin blend can be activated with a latent organometallic catalyst combined with an organic peroxide which can be a hydroperoxide or an acyl peroxide to decrease the cure time while increasing the break energy and tangent modulus of the system.

  16. Contribution of Alaskan glaciers to sea-level rise derived from satellite imagery

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Contribution of Alaskan glaciers to sea-level rise derived from satellite imagery BERTHIER E.1 level rise derived from satellite imagery. Nature Geoscience, 3(2), 92-95, doi: 10.1038/ngeo737, 2010 glaciers lost 41.9 ± 8.6 km3 yr-1 of water, and contributed 0.12 ± 0.02mm yr-1 to sea-level rise, 34% less

  17. Rapid Rise of Sea Level 19,000 Years Ago and Its Global Implications

    E-Print Network [OSTI]

    Kurapov, Alexander

    Rapid Rise of Sea Level 19,000 Years Ago and Its Global Implications Peter U. Clark,1* A. Marshall of an abrupt rise in sea level (meltwater pulse) at 19,000 years before the present (B.P.). Climate records level rise of 10 to 15 m at 19,000 years B.P. (1) (Fig. 1). (Unless otherwise indicated, all ages

  18. Mangroves, Mudbanks and Seawalls: Political Ecology of Adaptation to Sea Level Rise in Suriname.

    E-Print Network [OSTI]

    Nijbroek, Ravic

    2012-01-01T23:59:59.000Z

    ??This study seeks to understand how global discourses of sea level rise (SLR) and mangrove ecology influence national climate change adaptation policy to reduce coastal (more)

  19. Ground water of Yucca Mountain: How high can it rise?; Final report

    SciTech Connect (OSTI)

    NONE

    1992-12-31T23:59:59.000Z

    This report describes the geology, hydrology, and possible rise of the water tables at Yucca Mountain. The possibilities of rainfall and earthquakes causing flooding is discussed.

  20. The Rise of Europe: Atlantic Trade, Institutioanl Change and Economic Growth

    E-Print Network [OSTI]

    Acemoglu, Daron

    2003-04-14T23:59:59.000Z

    This paper documents that the Rise of (Western) Europe between 1500 and 1850 is largely accounted for by the growth of European nations with access to the Atlantic, ...

  1. The design, fabrication and maintenance of semi-trailers employed in the highway transport of weight-concentrated radioactive loads

    SciTech Connect (OSTI)

    Huffman, D.S. [Allied-Signal Inc., Metropolis, IL (United States)

    1991-12-31T23:59:59.000Z

    Transportation of weight-concentrated radioactive loads by truck is an essential part of a safe and economical nuclear industry. This proposed standard presents guidance and performance criteria for the safe transport of these weight-concentrated radioactive loads. ANSI N14.30 will detail specific requirements for the design, fabrication, testing, in-service inspections, maintenance and certification of the semi-trailers to be employed in said service. Furthermore, guidelines for a quality assurance program are also enumerated. This standard would apply to any semi-trailer that may or may not be specifically designed to carry weight-concentrated loads. Equipment not suitable per the criteria established in the standard would be removed from service. The nature of the nuclear industry and the need for a positive public perception of the various processes and players, mandates that the highway transportation of weight-concentrated radioactive loads be standardized and made inherently safe. This proposed standard takes a giant step in that direction.

  2. Nationwide: Slashing Red Tape To Speed Solar Deployment for Homes...

    Energy Savers [EERE]

    Slashing Red Tape To Speed Solar Deployment for Homes and Businesses Nationwide: Slashing Red Tape To Speed Solar Deployment for Homes and Businesses January 24, 2014 - 12:00am...

  3. 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...

  4. Speed Map for Autonomous Rovers over Rough Terrain

    E-Print Network [OSTI]

    Loh, Jonathan Edau

    2012-01-01T23:59:59.000Z

    presented here: fuzzy logic, reactive control, and machineto speed control is to utilize fuzzy logic. Fuzzy logic wascontrol, this is a new area of research where reactive speed controller, fuzzy logic,

  5. Excitation and control of a high-speed induction generator

    E-Print Network [OSTI]

    Englebretson, Steven Carl

    2005-01-01T23:59:59.000Z

    This project investigates the use of a high speed, squirrel cage induction generator and power converter for producing DC electrical power onboard ships and submarines. Potential advantages of high speed induction generators ...

  6. Discrete Mathematics and Theoretical Computer Science DMTCS vol. 10:3, 2008, 122 Counting descents, rises, and levels, with

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , rises, and levels, with prescribed first element, in words Sergey Kitaev1 and Toufik Mansour2 and Jeff of descents, levels, and rises according to whether the first letter of the descent, rise, or level lies in Ni some of the results by Burstein and Mansour. Keywords: descent, level, rise, set partition, word

  7. Wind speed PDF classification using Dirichlet mixtures Rudy CALIF1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Wind speed PDF classification using Dirichlet mixtures Rudy CALIF1 , Richard EMILION2 , Ted'Orléans), UMR CNRS 6628 Université d'Orléans, France. Abstract: Wind energy production is very sensitive to instantaneous wind speed fluctuations. Thus rapid variation of wind speed due to changes in the local

  8. Estimation of Wind Speed in Connection to a Wind Turbine

    E-Print Network [OSTI]

    Estimation of Wind Speed in Connection to a Wind Turbine X. Ma #3; , N. K. Poulsen #3; , H. Bindner y December 20, 1995 Abstract The wind speed varies over the rotor plane of wind turbine making the wind speed on the rotor plane will be estimated by using a wind turbine as a wind measuring device

  9. Adult Football Helmet Detailed Ratings Riddell Revolution Speed

    E-Print Network [OSTI]

    Lu, Chang

    Adult Football Helmet Detailed Ratings May 2011 Riddell Revolution Speed Helmet ID SPEED1 SPEED2: A total of 10 adult football helmet models were evaluated using the STAR evaluation system for May 2011.397 0.350 0.322 Overall STAR 0.356 Very Good: Adult Football Helmet Detailed Ratings May 2011 #12

  10. Deadline Scheduling and Power Management for Speed Bounded Processors

    E-Print Network [OSTI]

    Wong, Prudence W.H.

    be scaled arbitrarily high (the infinite speed model), SOA can complete all jobs with reduced energy usage,15,23,24] enables a processor to vary the speed dynamically. Running a job slower reduces energy usage, but it takes online job scheduling with speed scaling and energy usage taken into consideration. The challenge arises

  11. Statistical Analysis of Environment Canada's Wind Speed Data

    E-Print Network [OSTI]

    Taylor, James H.

    Statistical Analysis of Environment Canada's Wind Speed Data Someshwar Singh Department Brunswick-Fredericton New Brunswick, Canada Email: jtaylor@unb.ca Abstract--Wind energy utilities use wind. This paper reports on a study of the histories of wind speed forecasts and actual wind speed data available

  12. Ris-R-Report LIDAR Wind Speed Measurements from a

    E-Print Network [OSTI]

    , the spinner axis's vertical tilt and the wind turbine's yaw relative to the mean wind speed direction: Data Files 54 Appendix B: Wind Speed Vertical Profile 55 Appendix C: Sonic Cup Comparison 59Risø-R-Report LIDAR Wind Speed Measurements from a Rotating Spinner: "SpinnerEx 2009" Nikolas

  13. Coal-fueled high-speed diesel engine development. Final report, September 28, 1990--November 30, 1993

    SciTech Connect (OSTI)

    Kakwani, R.M.; Winsor, R.E.; Ryan, T.W. III; Schwalb, J.A.; Wahiduzzaman, S.; Wilson, R.P. Jr.

    1993-09-01T23:59:59.000Z

    The goal of this program was to study the feasibility of operating a Detroit Diesel Series 149 engine at high speeds using a Coal-Water-Slurry (CWS) fuel. The CWS-fueled 149 engine is proposed for the mine-haul off-highway truck and work boat marine markets. Economic analysis studies indicate that, for these markets, the use of CWS fuel could have sufficient operating cost savings, depending upon the future diesel fuel price, emission control system capital and operating costs, and maintenance and overhaul costs. A major portion of the maintenance costs is expected to be due to lower life and higher cost of the CWS injectors. Injection and combustion systems were specially designed for CWS, and were installed in one cylinder of a Detroit Diesel 8V-149TI engine for testing. The objective was to achieve engine operation for sustained periods at speeds up to 1,900 rpm with reasonable fuel economy and coal burnout rate. A computer simulation predicted autoignition of coal fuel at 1,900 rpm would require an average droplet size of 18 microns and 19:1 compression ratio, so the injection system, and pistons were designed accordingly. The injection system was capable of supplying the required volume of CWS/injection with a duration of approximately 25 crank angle degrees and peak pressures on the order of 100 mpa. In addition to the high compression ratio, the combustion system also utilized hot residual gases in the cylinder, warm inlet air admission and ceramic insulated engine components to enhance combustion. Autoignition of CWS fuel was achieved at 1900 rpm, at loads ranging from 20--80 percent of the rated load of diesel-fuel powered cylinders. Limited emissions data indicates coal burnout rates in excess of 99 percent. NO{sub x} levels were significantly lower, while unburned hydrocarbon levels were higher for the CWS fueled cylinder than for corresponding diesel-fuel powered cylinders.

  14. AIR FLOW DISTRIBUTION IN A HIGH-RISE RESIDENTIAL Helmut E. Feustel and Richard C. Diamond

    E-Print Network [OSTI]

    Diamond, Richard

    AIR FLOW DISTRIBUTION IN A HIGH-RISE RESIDENTIAL BUILDING Helmut E. Feustel and Richard C. Diamond Lawrence Berkeley National Laboratory, Berkeley, USA ABSTRACT The provision of ventilation air for high-rise multifamily housing has plagued retrofit practitioners and researchers alike. We have been studying the air

  15. Submeter bathymetric mapping of volcanic and hydrothermal features on the East Pacific Rise crest at 9500

    E-Print Network [OSTI]

    Whitcomb, Louis L.

    of bathymetric changes associated with active volcanic, hydrothermal and tectonic processes. Components: 15Submeter bathymetric mapping of volcanic and hydrothermal features on the East Pacific Rise crest to produce submeter resolution bathymetric maps of five hydrothermal vent areas at the East Pacific Rise (EPR

  16. Reconciling multidecadal land-sea global temperature with rising CO2

    E-Print Network [OSTI]

    Pratt, Vaughan

    Reconciling multidecadal land-sea global temperature with rising CO2 Vaughan Pratt Stanford CO2 1 / 35 #12;Goal Additional insight into 1 Similarity of the 1860-1880 & 1910-1940 rises to 1970-2000. 2 The recent pause 3 No sign of 3 C per doubling of CO2. Some applicable audiences: Average reader

  17. Reconciling multidecadal land-sea global temperature with rising CO2

    E-Print Network [OSTI]

    Pratt, Vaughan

    Reconciling multidecadal land-sea global temperature with rising CO2 Vaughan Pratt Stanford CO2 1 / 29 #12;Goal Additional insight into 1 Similarity of the 1860-1880 & 1910-1940 rises to 1970-2000. 2 The recent pause (2001-2013). 3 No sign of 3 C per doubling of CO2. Simple reasoning (no opaque

  18. Rosid radiation and the rapid rise of angiosperm-dominated forests

    E-Print Network [OSTI]

    Rosid radiation and the rapid rise of angiosperm-dominated forests Hengchang Wanga,b , Michael J relationships within the angiosperms, rosids remain the largest poorly resolved major clade; deep relationships] corresponds with the rapid rise of angiosperm-dominated forests and the concomitant diversification of other

  19. Low Speed Automation, a French Initiative

    E-Print Network [OSTI]

    Sbastien Glaser; Maurice Cour; Lydie Nouveliere; Alain Lambert; Fawzi Nashashibi; Jean-christophe Popieul; Benjamin Mourllion

    MIPS, 2 rue des frres Lumire,68093 Mulhouse-FRANCE Nowadays, vehicle safety is constantly increasing thanks to the improvement of vehicle passive and active safety. However, on a daily usage of the car, traffic jams remains a problem. With limited space for road infrastructure, automation of the driving task on specific situation seems to be a possible solution. The French project ABV, which stands for low speed automation, tries to demonstrate the feasibility of the concept and to prove the benefits. In this article, we describe the scientific background of the project and expected outputs. "Keywords: vehicle automation, shared control, environment sensing, data fusion;" 1.

  20. Speed-line for 3D animation

    E-Print Network [OSTI]

    Song, Won Chan

    2007-04-25T23:59:59.000Z

    Committee Members, Carol LaFayette John Keyser Head of Department, Mardelle Shepley December 2005 Major Subject: Visualization Sciences iii ABSTRACT Speed-Line for 3D Animation. (December 2005) Won Chan Song, B.F.A., Ringling School of Art and Design Chair... to thank my committee members, Prof. Carol LaFayette and Dr. John Keyser for their advice and feedback. My gratitude also goes to Hobart Chan for letting me borrow his car model, which saved me a huge amount of time when I was making an animation as a...

  1. Effective speed of sound in phononic crystals

    E-Print Network [OSTI]

    A. A. Kutsenko; A. L. Shuvalov; A. N. Norris

    2011-06-27T23:59:59.000Z

    A new formula for the effective quasistatic speed of sound $c$ in 2D and 3D periodic materials is reported. The approach uses a monodromy-matrix operator to enable direct integration in one of the coordinates and exponentially fast convergence in others. As a result, the solution for $c$ has a more closed form than previous formulas. It significantly improves the efficiency and accuracy of evaluating $c$ for high-contrast composites as demonstrated by a 2D example with extreme behavior.

  2. Nuclear Speed-Dating | 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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas Conchas recoveryLaboratory | NationalJohnSecurityControls |NavyNuclear Speed-Dating Nuclear

  3. MHL High Speed Cavitation | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to:46 - 429Lacey,(MonasterLowell Point,ECO Auger < MHK TechnologiesMonofloathyTideSpeed

  4. Speeding Up Zeolite Evaluation for Carbon Capture

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassiveSubmittedStatus Tom Fletcher,Future |CarlosSpeakersSpectroscopy PrintSpeeding

  5. Lensless magneto-optic speed sensor

    DOE Patents [OSTI]

    Veeser, L.R.; Forman, P.R.; Rodriguez, P.J.

    1998-02-17T23:59:59.000Z

    Lensless magneto-optic speed sensor is disclosed. The construction of a viable Faraday sensor has been achieved. Multimode fiber bundles are used to collect the light. If coupled directly into a 100 or 200 {micro}m core fiber, light from a light emitting diode (LED) is sufficient to operate the sensor. In addition, LEDs ensure that no birefringence effects in the input fiber are possible, as the output from such light sources have random polarization. No lens is required since the large diameter optical fibers and thin crystals of materials having high Verdet constants (such as iron garnets) employed permit the collection of a substantial quantity of light. No coupler is required. The maximum amount of light which could reach a detector using a coupler is 25%, while the measured throughput of the fiber-optic bundle without a coupler is about 42%. All of the elements employed in the present sensor are planar, and no particular orientation of these elements is required. The present sensor operates over a wide range of distances from magnetic field sources, and observed signals are large. When a tone wheel is utilized, the signals are independent of wheel speed, and the modulation is observed to be about 75%. No sensitivity to bends in the input or output optical fiber leads was observed. Reliable operation was achieved down to zero frequency, or no wheel rotation. 5 figs.

  6. Lensless Magneto-optic speed sensor

    DOE Patents [OSTI]

    Veeser, Lynn R. (Los Alamos, NM); Forman, Peter R. (Los Alamos, NM); Rodriguez, Patrick J. (Santa Fe, NM)

    1998-01-01T23:59:59.000Z

    Lensless magneto-optic speed sensor. The construction of a viable Faraday sensor has been achieved. Multimode fiber bundles are used to collect the light. If coupled directly into a 100 or 200 .mu.m core fiber, light from a light emitting diode (LED) is sufficient to operate the sensor. In addition, LEDs ensure that no birefringence effects in the input fiber are possible, as the output from such light sources have random polarization. No lens is required since the large diameter optical fibers and thin crystals of materials having high Verdet constants (such as iron garnets) employed permit the collection of a substantial quantity of light. No coupler is required. The maximum amount of light which could reach a detector using a coupler is 25%, while the measured throughput of the fiber-optic bundle without a coupler is about 42%. All of the elements employed in the present sensor are planar, and no particular orientation of these elements is required. The present sensor operates over a wide range of distances from magnetic field sources, and observed signals are large. When a tone wheel is utilized, the signals are independent of wheel speed, and the modulation is observed to be about 75%. No sensitivity to bends in the input or output optical fiber leads was observed. Reliable operation was achieved down to zero frequency, or no wheel rotation.

  7. Slow speed object detection for haul trucks

    SciTech Connect (OSTI)

    NONE

    2009-09-15T23:59:59.000Z

    Caterpillar integrates radar technology with its current camera based system. Caterpillar has developed the Integrated Object Detection System, a slow speed object detection system for mining haul trucks. Object detection is a system that aids the truck operator's awareness of their surroundings. The system consists of a color touch screen display along with medium- and short-range radar as well as cameras, harnesses and mounting hardware. It is integrated into the truck's Work Area Vision System (WAVS). After field testing in 2007, system commercialization began in 2008. Prototype systems are in operation in Australia, Utah and Arizona and the Integrated Object Detection System will be available in the fourth quarter of 2009 and on production trucks 785C, 789C, 793D and 797B. The article is adapted from a presentation by Mark Richards of Caterpillar to the Haulage & Loading 2009 conference, May, held in Phoenix, AZ. 1 fig., 5 photos.

  8. High Speed AB-Solar Sail

    E-Print Network [OSTI]

    Bolonkin, A

    2007-01-01T23:59:59.000Z

    The Solar sail is a large thin film used to collect solar light pressure for moving of space apparatus. Unfortunately, the solar radiation pressure is very small about 9 mkN/sq.m at Earth's orbit. However, the light force significantly increases up to 0.2 - 0.35 N/sq.m near the Sun. The author offers his research on a new revolutionary highly reflective solar sail which flyby (after special maneuver) near Sun and attains velocity up to 400 km/sec and reaching far planets of the Solar system in short time or enable flights out of Solar system. New, highly reflective sail-mirror allows avoiding the strong heating of the solar sail. It may be useful for probes close to the Sun and Mercury and Venus. Key words: AB-solar sail, highly reflective solar sail, high speed propulsion.

  9. High-speed electrical motor evaluation

    SciTech Connect (OSTI)

    Not Available

    1989-02-03T23:59:59.000Z

    Under this task, MTI conducted a general review of state-of-the-art high-speed motors. The purpose of this review was to assess the operating parameters, limitations and performance of existing motor designs, and to establish commercial sources for a motor compatible with the requirements of the Brayton-cycle system. After the motor requirements were established, a list of motor types, manufacturers and designs capable of achieving the requisite performance was compiled. This list was based on an in-house evaluation of designs. Following the establishment of these options, a technical evaluation of the designs selected was conducted. In parallel with their evaluations, MTI focused on the establishment of commercial sources.

  10. High Speed AB-Solar Sail

    E-Print Network [OSTI]

    A. Bolonkin

    2007-01-08T23:59:59.000Z

    The Solar sail is a large thin film used to collect solar light pressure for moving of space apparatus. Unfortunately, the solar radiation pressure is very small about 9 mkN/sq.m at Earth's orbit. However, the light force significantly increases up to 0.2 - 0.35 N/sq.m near the Sun. The author offers his research on a new revolutionary highly reflective solar sail which flyby (after special maneuver) near Sun and attains velocity up to 400 km/sec and reaching far planets of the Solar system in short time or enable flights out of Solar system. New, highly reflective sail-mirror allows avoiding the strong heating of the solar sail. It may be useful for probes close to the Sun and Mercury and Venus. Key words: AB-solar sail, highly reflective solar sail, high speed propulsion.

  11. High Speed/ Low Effluent Process for Ethanol

    SciTech Connect (OSTI)

    M. Clark Dale

    2006-10-30T23:59:59.000Z

    n this project, BPI demonstrated a new ethanol fermentation technology, termed the High Speed/ Low Effluent (HS/LE) process on both lab and large pilot scale as it would apply to wet mill and/or dry mill corn ethanol production. The HS/LE process allows very rapid fermentations, with 18 to 22% sugar syrups converted to 9 to 11% ethanol beers in 6 to 12 hours using either a consecutive batch or continuous cascade implementation. This represents a 5 to 8X increase in fermentation speeds over conventional 72 hour batch fermentations which are the norm in the fuel ethanol industry today. The consecutive batch technology was demonstrated on a large pilot scale (4,800 L) in a dry mill corn ethanol plant near Cedar Rapids, IA (Xethanol Biofuels). The pilot demonstrated that 12 hour fermentations can be accomplished on an industrial scale in a non-sterile industrial environment. Other objectives met in this project included development of a Low Energy (LE) Distillation process which reduces the energy requirements for distillation from about 14,000 BTU/gal steam ($0.126/gal with natural gas @ $9.00 MCF) to as low as 0.40 KW/gal electrical requirements ($0.022/gal with electricity @ $0.055/KWH). BPI also worked on the development of processes that would allow application of the HS/LE fermentation process to dry mill ethanol plants. A High-Value Corn ethanol plant concept was developed to produce 1) corn germ/oil, 2) corn bran, 3) ethanol, 4) zein protein, and 5) nutritional protein, giving multiple higher value products from the incoming corn stream.

  12. Trends in the size distribution, highway use, and consumption of gasoline and diesel fuels of the U.S. Commercial Truck Fleet, 1977-2002.

    SciTech Connect (OSTI)

    Bertram, K. M.; Santini, D. J.; Anderson, J. L.; Vyas, A. D.

    2008-01-01T23:59:59.000Z

    This paper focuses on various major long-range (1977-2002, 1982-2002) U.S. commercial trucking trends by using U.S. Department of Commerce, Bureau of the Census Vehicle/Truck Inventory and Use Survey (VIUS/TIUS) data from this period, as well as selected 1977-2002 data from the U.S. Department of Energy's (DOE's) Energy Information Administration (EIA) and the U.S. Department of Transportation, Federal Highway Administration's (FHWA's) Highway Statistics. Analyses are made of (1) overall passenger vehicle versus truck consumption patterns of gasoline and diesel fuel and (2) the population growth and fuels used by all commercial truck classes and selected truck types (single unit and combination). Selected vehicle miles traveled, gallons per vehicle miles traveled, and gallons per cargo ton-miles traveled trends, as well as the effect of cargo tons per truck on fuel consumption, are also assessed. In addition, long-range trends of related factors (such as long-haul mileages driven by heavy trucks) and their impacts on both reducing fuel consumption per cargo-ton-mile and the relative shares of total commercial fuel use among truck classes were examined. Results of these trends on U.S. petroleum consumption are identified. The effects of basic engineering design and performance, national Interstate highway construction legislation, national demographic trends (such as suburbanization), and changes in U.S. corporate operational requirements are discussed. Their impacts on both the long-distance hauling and shorter-distance urban and suburban delivery markets of the commercial trucking industry are highlighted.

  13. Ocean Drilling Program (ODP) Leg 207 recently cored sediments on the Demerara Rise at ~9N

    E-Print Network [OSTI]

    Bice, Karen L.

    Rise,north of Suriname and French Guyana, South America,is an ideal drilling target because expanded of Suriname,and is ~220 km wide from the shelf break to the northeastern escarpment. Most of the plateau lies

  14. Regionalism and the design of low-rise building envelope systems

    E-Print Network [OSTI]

    Tapia, Jason W. (Jason Wilfredo)

    2010-01-01T23:59:59.000Z

    This investigation proposes the use of a three-pronged approach to evaluating building envelopes for low-rise affordable housing in urban contexts: construction cost estimating, building performance modeling, and cradle ...

  15. Localization with Dive'N'Rise (DNR) Beacons for Underwater Acoustic Sensor Networks

    E-Print Network [OSTI]

    Zhou, Shengli

    Localization with Dive'N'Rise (DNR) Beacons for Underwater Acoustic Sensor Networks Melike Erol-Based Systems]: Underwater acoustic sensor networks - localization General Terms: Performance Keywords: Underwater sensor networks, localization, positioning, mobile beacon 1. INTRODUCTION Pollution monitoring

  16. Transformation of the courtyard house--low-rise high density urban housing in Korea

    E-Print Network [OSTI]

    Park, Gene S. (Gene Sungjin)

    1987-01-01T23:59:59.000Z

    The idea of low-rise high-density urban housing is based on two fundamental objectives: 1) To provide higher density by intensifying land use as urban growth escalates at an unprecedented rate. 2) To reconsider the essential ...

  17. Evolution of the Galapagos Rise and the Bauer Microplate: implications for the Nazca plate

    E-Print Network [OSTI]

    Wright, Jennifer Catherine McGuire

    2006-04-12T23:59:59.000Z

    Analysis of the satellite altimetry based predicted bathymetry, magnetic anomalies, and earthquake seismic data relating to the geophysical structure on the Nazca plate indicates that the Galapagos Rise system served as the transitional spreading...

  18. "Shelter within my reach" : medium rise apartment housing for the middle income group in Karachi, Pakistan

    E-Print Network [OSTI]

    Mahmood, Saman, 1972-

    1999-01-01T23:59:59.000Z

    This thesis identifies the project development processes of medium rise (five storied or less) apartment housing built by the private formal sector, catering to the middle income groups in Karachi, Pakistan. Middle income ...

  19. A Single Continuous Function as a Model for Fast Rise Exponential Decay Gamma-Ray Bursts.

    E-Print Network [OSTI]

    Logue, Daniel B

    2006-01-01T23:59:59.000Z

    ??A quantitative analysis was performed on a sample of Fast-Rise Exponential-Decay gamma-ray bursts using a continuous fitting function. The data were obtained from the Large (more)

  20. East Boston buffer : a transferable urban framework for adapting to sea rise

    E-Print Network [OSTI]

    Jenkins, Carolyn (Carolyn Hiller)

    2013-01-01T23:59:59.000Z

    Urban vulnerability to climate change is constantly increasing. Many coastal cities will need to begin sea rise mitigation efforts soon, and now is a critical time for architects to intervene in this process with good ...

  1. Swell : a proposition for coastal metropolises in the age of rising seas and distributed centralization

    E-Print Network [OSTI]

    Dorsey, Talia (Talia H.)

    2006-01-01T23:59:59.000Z

    Premised upon the certain realities of the rise of urban sprawl, globalized dynamic networks, and sea levels, this thesis seeks to question these forces and mobilize the inherent potentials that lie within their intersections. ...

  2. Storm smart planning for adaptation to sea level rise : addressing coastal flood risk in East Boston

    E-Print Network [OSTI]

    Wolff, Victoria H

    2009-01-01T23:59:59.000Z

    Regardless of how well we implement sustainability plans, now and in the future, the weight of scientific evidence indicates that mean sea level will continue to rise at an increasing rate over the next century. Thus, ...

  3. Preliminary global assessment of terrestrial biodiversity consequences of sea level rise mediated by climate change

    E-Print Network [OSTI]

    Menon, Shaily; Soberó n, Jorge; Li, Xingong; Peterson, A. Townsend

    2010-02-25T23:59:59.000Z

    Considerable attention has focused on the climatic effects of global climate change on biodiversity, but few analyses and no broad assessments have evaluated the effects of sea level rise on biodiversity. Taking advantage of new maps of marine...

  4. Organ Trade : sea level rise adaptation strategies for the San Francisco Bay Area

    E-Print Network [OSTI]

    Ungureanu, Cristina

    2010-01-01T23:59:59.000Z

    It is not only coastal conditions, but inland ones, that can inform an approach to and process of wetland adaptation in the face of sea level rise. A particular watershed clip in Alameda County, located in South San Francisco ...

  5. Energy Performance and Comfort Level in High Rise and Highly Glazed Office Buildings

    E-Print Network [OSTI]

    Bayraktar, M.; Perino, M.; Yilmaz, A. Z.

    2010-01-01T23:59:59.000Z

    Thermal and visual comfort in buildings play a significant role on occupants' performance but on the other hand achieving energy savings and high comfort levels can be a quite difficult task especially in high rise buildings with highly glazed...

  6. Investigation of shear lag effect in high-rise buildings with diagrid system

    E-Print Network [OSTI]

    Leonard, Johan, M. Eng. Massachusetts Institute of Technology

    2007-01-01T23:59:59.000Z

    In the recent years, there have been many new skyscrapers built which soar into new heights. The most efficient building system for high-rises has been the framed tube system. However, the framed tube building suffers from ...

  7. Impact of cladding on mid-rise buildings in the Northridge Earthquake

    E-Print Network [OSTI]

    Kuo, Chuan-Hua

    2009-01-01T23:59:59.000Z

    In this thesis, the importance of cladding panels on mid-rise buildings in an earthquake-prone region is investigated. A cladding panel acts as a protective or an insulating layer to control weather infiltration. The ...

  8. Structural performance of early 20th century masonry high rise buildings

    E-Print Network [OSTI]

    Buntrock, Rebecca (Rebecca Miriam)

    2010-01-01T23:59:59.000Z

    Early generation high rise buildings built between 1890 and World War 11 represent a technical transition between traditional load bearing masonry construction and modern curtain wall systems, and are typically referred ...

  9. George Beauchamp and the rise of the electric guitar up to 1939

    E-Print Network [OSTI]

    Hill, Matthew William

    2014-06-27T23:59:59.000Z

    This thesis examines the rise of the electric guitar in the United States arguably the most iconic and successful musical instrument of the 20th century and the role of George Beauchamp in its invention and development. ...

  10. E-Print Network 3.0 - ambient temperature rise Sample Search...

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

    (ambient), 30 C, 40 C, 45 C, and 65 C. A temperature sensor was placed inside the transformer tank to make... to higher values with rising temperature. For calculating paper...

  11. Wave Speed in the Macroscopic Extended Model for Ultrarelativistic Gases

    E-Print Network [OSTI]

    F. Borghero; F. Demontis; S. Pennisi

    2010-12-07T23:59:59.000Z

    An exact macroscopic extended model for ultrarelativistic gases, with an arbitrary number of moments, is present in the literature. Here we exploit equations determining wave speeds for that model. We find interesting results; for example, the whole system for their determination can be divided into independent subsystems and some, but not all, wave speeds are expressed by rational numbers. Moreover, the extraordinary property that these wave speeds for the macroscopic model are the same of those in the kinetic model, is proved.

  12. Effect of shrink fits on threshold speeds of rotordynamic instability

    E-Print Network [OSTI]

    Mir, MD. Mofazzal Hossain

    2001-01-01T23:59:59.000Z

    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 CHAPTER IV TEST APPARATUS . . . . 13 CHAPTER V RESULTS AND DISCUSSION . . . 17 17 30 42 42 47 5. 1 Rap Test. . 5. 2 Running Test 5. 3 Modeling and the Prcdiction of Threshold Speed of Instability.... . . . . . . . . . . . , . . . . . . . . . . . 5. 3. 1 Matching the Base Case. 5. 3. 2 Gunter's Prediction Using C, q 5. 3. 3 Modeling and Prediction of the Threshold Speed Using the XLTRC Code. . . . 51 5. 4 Prediction of the Onset Speed of Instability for a Tight Inteiference Fit...

  13. Boosting the Next Wave of Accelerators: New Technique Speeds...

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

    Boosting Accelerator Design Boosting the Next Wave of Accelerators New Technique Speeds Simulations by up to a Million-fold March 29, 2011 | Tags: Franklin, Nuclear Physics (NP)...

  14. Surface wind speed distributions| Implications for climate and wind power.

    E-Print Network [OSTI]

    Capps, Scott Blair

    2010-01-01T23:59:59.000Z

    ?? Surface constituent and energy fluxes, and wind power depend non-linearly on wind speed and are sensitive to the tails of the wind distribution. Until (more)

  15. New process speeds conversion of biomass to fuels

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

    Conversion of Biomass to Fuels New process speeds conversion of biomass to fuels Scientists made a major step forward recently towards transforming biomass-derived molecules into...

  16. High-Speed, Stereoselective Polymerization for Renewable, Bio...

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

    Speed, Stereoselective Polymerization for Renewable, Bio-derived Plastics Fabrication of polymers and plastics from naturally renewable feedstocks offers the potential for a cost...

  17. Very High Fuel Economy, Heavy Duty Truck, Narrow Range Speed...

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

    Heavy Duty Truck, Narrow Range Speed Engine, Optimized Via Unique Energy Recovery Turbines and Facilitated by High Efficiency Continuously Variable Drivetrain Very High Fuel...

  18. Variable current speed controller for eddy current motors

    DOE Patents [OSTI]

    Gerth, H.L.; Bailey, J.M.; Casstevens, J.M.; Dixon, J.H.; Griffith, B.O.; Igou, R.E.

    1982-03-12T23:59:59.000Z

    A speed control system for eddy current motors is provided in which the current to the motor from a constant frequency power source is varied by comparing the actual motor speed signal with a setpoint speed signal to control the motor speed according to the selected setpoint speed. A three-phase variable voltage autotransformer is provided for controlling the voltage from a three-phase power supply. A corresponding plurality of current control resistors is provided in series with each phase of the autotransformer output connected to inputs of a three-phase motor. Each resistor is connected in parallel with a set of normally closed contacts of plurality of relays which are operated by control logic. A logic circuit compares the selected speed with the actual motor speed obtained from a digital tachometer monitoring the motor spindle speed and operated the relays to add or substract resistance equally in each phase of the motor input to vary the motor current to control the motor at the selected speed.

  19. The Rise And Fall Of The Muslim Brotherhood In The Egyptian Revolution: The Interplay of Narrative And Other Factors

    E-Print Network [OSTI]

    Tombaugh, William

    2013-08-31T23:59:59.000Z

    This study examines the interplay of narrative and other factors in the rise and fall of the Muslim Brotherhood during the Egyptian Revolution. I hypothesize that narrative played a major role in the Muslim Brotherhoods rise to power...

  20. 20 My of nitrogen fixation during deposition of mid-Cretaceous black shales on the Demerara Rise, equatorial Atlantic Ocean

    E-Print Network [OSTI]

    Gilli, Adrian

    Drilling Pro- gram (ODP) Leg 207 on the Demerara Rise offshore of Surinam is up to 90 m in thickness

  1. Spatio-Temporal Dynamics of Resident and Immigrating Populations of Carcinops pumilio (Coleoptera: Histeridae) in High-Rise

    E-Print Network [OSTI]

    -rise poultry house ma- nure. Its association with poultry manure was ?rst described by Peck (1969) and Peck

  2. High speed point derivative microseismic detector

    DOE Patents [OSTI]

    Uhl, J.E.; Warpinski, N.R.; Whetten, E.B.

    1998-06-30T23:59:59.000Z

    A high speed microseismic event detector constructed in accordance with the present invention uses a point derivative comb to quickly and accurately detect microseismic events. Compressional and shear waves impinging upon microseismic receiver stations disposed to collect waves are converted into digital data and analyzed using a point derivative comb including assurance of quiet periods prior to declaration of microseismic events. If a sufficient number of quiet periods have passed, the square of a two point derivative of the incoming digital signal is compared to a trip level threshold exceeding the determined noise level to declare a valid trial event. The squaring of the derivative emphasizes the differences between noise and signal, and the valid event is preferably declared when the trip threshold has been exceeded over a temporal comb width to realize a comb over a given time period. Once a trial event has been declared, the event is verified through a spatial comb, which applies the temporal event comb to additional stations. The detector according to the present invention quickly and accurately detects initial compressional waves indicative of a microseismic event which typically exceed the ambient cultural noise level by a small amount, and distinguishes the waves from subsequent larger amplitude shear waves. 9 figs.

  3. High speed point derivative microseismic detector

    DOE Patents [OSTI]

    Uhl, James Eugene (Albuquerque, NM); Warpinski, Norman Raymond (Albuquerque, NM); Whetten, Ernest Blayne (Albuquerque, NM)

    1998-01-01T23:59:59.000Z

    A high speed microseismic event detector constructed in accordance with the present invention uses a point derivative comb to quickly and accurately detect microseismic events. Compressional and shear waves impinging upon microseismic receiver stations disposed to collect waves are converted into digital data and analyzed using a point derivative comb including assurance of quiet periods prior to declaration of microseismic events. If a sufficient number of quiet periods have passed, the square of a two point derivative of the incoming digital signal is compared to a trip level threshold exceeding the determined noise level to declare a valid trial event. The squaring of the derivative emphasizes the differences between noise and signal, and the valid event is preferably declared when the trip threshold has been exceeded over a temporal comb width to realize a comb over a given time period. Once a trial event has been declared, the event is verified through a spatial comb, which applies the temporal event comb to additional stations. The detector according to the present invention quickly and accurately detects initial compressional waves indicative of a microseismic event which typically exceed the ambient cultural noise level by a small amount, and distinguishes the waves from subsequent larger amplitude shear waves.

  4. High speed exhaust gas recirculation valve

    DOE Patents [OSTI]

    Fensom, Rod (Peterborough, GB); Kidder, David J. (Peterborough, GB)

    2005-01-18T23:59:59.000Z

    In order to minimize pollutants such as Nox, internal combustion engines typically include an exhaust gas recirculation (EGR) valve that can be used to redirect a portion of exhaust gases to an intake conduit, such as an intake manifold, so that the redirected exhaust gases will be recycled. It is desirable to have an EGR valve with fast-acting capabilities, and it is also desirable to have the EGR valve take up as little space as possible. An exhaust gas recirculation valve is provided that includes an exhaust passage tube, a valve element pivotally mounted within the exhaust passage tube, a linear actuator; and a gear train. The gear train includes a rack gear operatively connected to the linear actuator, and at least one rotatable gear meshing with the rack gear and operatively connected to the valve element to cause rotation of the valve element upon actuation of the linear actuator. The apparatus provides a highly compact package having a high-speed valve actuation capability.

  5. Dynamical suppression of sea level rise along the Pacific coast of North America: Indications for imminent acceleration

    E-Print Network [OSTI]

    Bromirski, Peter D.

    Dynamical suppression of sea level rise along the Pacific coast of North America: Indications changes in global mean sea level (MSL) rise have important practical implications for shoreline and beach occurred after the mid1970s regime shift, can account for the suppression of regional sea level rise along

  6. Late Glacial to Preboreal sea-level rise recorded by the previous termRhne deltaic systemnext term

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Late Glacial to Preboreal sea-level rise recorded by the previous termRhône deltaic systemnext term by progradation initiated during the first phase of the Younger Dryas, a period of reduced sea-level rise or stillstand. The delta kept pace with resumed sea-level rise during the Preboreal (which is estimated at about

  7. Climate scenarios of sea level rise for the northeast Atlantic Ocean: a study including the effects of ocean

    E-Print Network [OSTI]

    Drijfhout, Sybren

    Climate scenarios of sea level rise for the northeast Atlantic Ocean: a study including the effects. Here we present a set of regional climate scenarios of sea level rise for the northeast Atlantic Ocean best estimate of twenty-first century sea level rise in the northeast Atlantic Ocean, given the current

  8. PUBLISHED ONLINE: 26 JULY 2009 | DOI: 10.1038/NGEO587 Constraints on future sea-level rise from past

    E-Print Network [OSTI]

    Siddall, Mark

    LETTERS PUBLISHED ONLINE: 26 JULY 2009 | DOI: 10.1038/NGEO587 Constraints on future sea-level rise to project sea-level rise in response to warming climates by the end of the century, especially because­24 cm of sea-level rise during the twentieth century, in agreement with the Fourth Assessment Report

  9. Shore & Beach Vol. 77, No. 4 Fall 2009 Page 1 ea-level rise (SLR) has received

    E-Print Network [OSTI]

    US Army Corps of Engineers

    Shore & Beach Vol. 77, No. 4 Fall 2009 Page 1 S ea-level rise (SLR) has received considerable that is typically 50 years, and it Sea level rise and consequences for navigable coastal inlets By Julie D. Rosati.C.Kraus@usace.army.mil ABSTRACT Global sea level is expected to rise over the next 100 years. Changes in sea level will alter

  10. 19 HASTINGS WEST NORTHWEST J. ENVTL. L. & POL'Y 463 (2013) COMBATING SEA-LEVEL RISE IN SOUTHERN CALIFORNIA

    E-Print Network [OSTI]

    Rohs, Remo

    19 HASTINGS WEST NORTHWEST J. ENVTL. L. & POL'Y 463 (2013) 1 COMBATING SEA-LEVEL RISE IN SOUTHERN governments will make choices that will shape the region's resilience to sea-level rise. To implement of adaptation actions and sea-level rise itself. This article identifies how local governments can harness legal

  11. Bursting the Bubble of Doom and Adapting to Sea Level Rise Randall W. Parkinson, Ph.D., P.G.

    E-Print Network [OSTI]

    Donoghue, Joseph

    March 2010 Bursting the Bubble of Doom and Adapting to Sea Level Rise Randall W. Parkinson, Ph of Geological Sciences Florida State University Tallahassee, Florida Introduction Late Holocene sea level rise to adapt to sea level rise or for that matter any of the other elements of climate change. In light

  12. Gulf Stream's induced sea level rise and variability along the U.S. mid-Atlantic coast

    E-Print Network [OSTI]

    Ezer,Tal

    Gulf Stream's induced sea level rise and variability along the U.S. mid-Atlantic coast Tal Ezer,1 that the rates of sea level rise (SLR) along the U.S. mid-Atlantic coast have accelerated in recent decades along the coast. The study suggests that regional coastal sea level rise projections due to climate

  13. Dynamic response of marshes to perturbations in suspended sediment concentrations and rates of relative sea level rise

    E-Print Network [OSTI]

    of relative sea level rise A. D'Alpaos,1 S. M. Mudd,2,3 and L. Carniello4 Received 18 May 2011; revised 5 in suspended sediment concentrations, plant productivity, and the rate of relative sea level rise (RSLR in suspended sediment concentrations and rates of relative sea level rise, J. Geophys. Res., 116, F04020, doi

  14. A PRACTICAL APPROACH TO MAPPING EXTREME WAVE INUNDATION: CONSEQUENCES OF SEA-LEVEL RISE AND COASTAL EROSION.

    E-Print Network [OSTI]

    Wang, Yuqing

    A PRACTICAL APPROACH TO MAPPING EXTREME WAVE INUNDATION: CONSEQUENCES OF SEA-LEVEL RISE AND COASTAL and the influence of sea-level rise and coastal erosion. The concept is presented for windward Oahu, Hawai in future inundation levels. INTRODUCTION Sea-level rise of 0.5-1.4 m (Rahmstorf 2007) is expected

  15. Effect of sea-level rise on piping plover (Charadrius melodus) breeding habitat Jennifer R. Seavey a,

    E-Print Network [OSTI]

    McGarigal, Kevin

    Effect of sea-level rise on piping plover (Charadrius melodus) breeding habitat Jennifer R. Seavey, threatening many low-lying coastal areas and associated wildlife. We assessed the threat of sea-level rise sys- tems because of their vulnerability to sea-level rise (Farbotko, 2010; Nicholls et al., 2007

  16. EA-2001: Energy Efficiency Design Standards: New Federal Commercial and Multi-Family High-Rise Residential Buildings and New Federal Low-Rise Residential Buildings

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy (DOE) is publishing this final rule to implement provisions in the Energy Conservation and Production Act (ECPA) that require DOE to update the baseline Federal energy efficiency performance standards for the construction of new Federal commercial and multi-family high-rise residential buildings. This rule updates the baseline Federal commercial standard to the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) Standard 90.1-2013.

  17. Phoenix rising

    SciTech Connect (OSTI)

    Buchsbaum, L.

    2008-08-15T23:59:59.000Z

    Phoenix Coal currently operates 3 surface coal mines in Western Kentucky and have recently obtained the permits to construct their first underground mine. The expansion of the Phoenix Coal company since its formation in July 2004 is described. 4 photos.

  18. 0 Riso-R-434 Wind Speed and Direction

    E-Print Network [OSTI]

    meteorological statistics for the area as it was considered a possible site for a nuclear power plant. \\ \\ Duringm I 0 Riso-R-434 t Wind Speed and Direction Changes due to Terrain Effects revealed-4000 Roskilde, Denmark May 1983 #12;RIS?-R-434 WIND SPEED AND DIRECTION CHANGES DUE TO TERRAIN EFFECTS

  19. Multiprocessor Speed Scaling for Jobs with Arbitrary Sizes and Deadlines

    E-Print Network [OSTI]

    Wong, Prudence W.H.

    or laptops with multi-core processors. A popular technology to reduce energy usage is dynamic speed scaling.H. Wong 1 Introduction Energy consumption has become an important concern in the design of modern energy, yet it takes longer to finish the job. The study of speed scaling was initiated by Yao et al. [6

  20. Structural vibration damping using lightweight, low-wave-speed media

    E-Print Network [OSTI]

    Verdirame, Justin Matthew, 1978-

    2007-01-01T23:59:59.000Z

    Incorporation of a low-density, low-wave-speed medium (LWSM) into a structure yields significant damping if the speed of wave propagation in the medium is low enough for standing waves to arise in it. In this thesis, we ...

  1. High Speed Rail in America Thomas Ducharme, Matt Schena,

    E-Print Network [OSTI]

    Nagurney, Anna

    International Airport. · Florida is on track to open one of America's first HSR express service between Tampa Situation of High Speed Rail · The US only has one high speed rail o Acela Which runs from Boston Airport congestion o By eliminating 900,000 city to city flights · Give access to cheaper long distance

  2. Probabilistic Wind Speed Forecasting Using Ensembles and Bayesian Model Averaging

    E-Print Network [OSTI]

    Raftery, Adrian

    distribution; Numerical weather prediction; Skewed distribution; Truncated data; Wind energy. 1. INTRODUCTION- native. Purely statistical methods have been applied to short-range forecasts for wind speed only a fewProbabilistic Wind Speed Forecasting Using Ensembles and Bayesian Model Averaging J. Mc

  3. Hydropower at flood control reservoirs - the variable speed option

    SciTech Connect (OSTI)

    Laurence, K.; Yale, J. [Stone & Webster Engineering Corp., Denver, CO (United States)

    1995-12-31T23:59:59.000Z

    Application of hydroelectric turbine-generators to flood control has been limited due to the inability of a single turbine to operate efficiently over the wide head and flow ranges encountered. Multiple and different unit combinations have been applied to this problem, but the cost of the additional unit(s), powerhouse, and supporting facilities typically causes the project to become unfeasible. Variable speed operation can increase the operating range of a single turbine, and significantly improve efficiency over single speed units. This can make hydroelectric generation at flood control projects feasible. This paper presents a comparison of the application of variable speed units, two speed units, and single speed units at the Blue River Dam Hydroelectric Project. The project consists of the addition of a powerhouse to an existing Army Corps of Engineers flood control project. Efficiency data for the different types of units are compared and historical flow and release data are used in a computer model to simulate plant operation.

  4. Non-Gaussianities of primordial perturbations and tensor sound speed

    E-Print Network [OSTI]

    Toshifumi Noumi; Masahide Yamaguchi

    2014-03-24T23:59:59.000Z

    We investigate the relation between the non-Gaussianities of the primordial perturbations and the sound speed of the tensor perturbations, that is, the propagation speed of the gravitational waves. We find that the sound speed of the tensor perturbations is directly related not to the auto-bispectrum of the tensor perturbations but to the cross-bispectrum of the primordial perturbations, especially, the scalar-tensor-tensor bispectrum. This result is in sharp contrast with the case of the scalar (curvature) perturbations, where their reduced sound speed enhances their auto-bispectrum. Our findings indicate that the scalar-tensor-tensor bispectrum can be a powerful tool to probe the sound speed of the tensor perturbations.

  5. High-speed electrochemistry using ultramicroelectrodes

    SciTech Connect (OSTI)

    Walsh, M.R.

    1989-01-01T23:59:59.000Z

    This research investigates the use of ultramicroelectrodes in performing electrochemistry on microsecond and nanosecond time scales. One purpose of this research was to look at new ways to apply ultramicroelectrodes to high speed experiments. Some of the aspects that are discussed in this thesis are: (a) A novel technique was developed for measuring currents on short time scales that involves conversion of the current to light using a light emitting diode and measuring the light intensity as a function of time using time correlated single photon counting (TCSPC). Computer processing of the light intensity data can convert this data back to current. The technique is capable of measurements on nanosecond time scales, but TCSPC requires tens or hundreds of millions of experiments to obtain a complete set of data and this frequently results in severe electrode fouling problems. (b) Potential step experiments were used instead of potential sweep experiments. Potential step experiments enable the separation in time of the faradaic and charging currents for chemical systems in which the faradaic impedance is greater than the uncompensated solution resistance. (c) For systems in which the faradaic impedance and uncompensated resistance are of the same order of magnitude, a computer simulation was developed which accounts for the interaction of the faradaic and double layer charging processes. (d) Application of short time scale experiments to the study of surface processes. Some processes studied in this work are the oxidation of clean platinum surfaces, electrode reactions of anthraquinone-2,6-disulfonic acid adsorbed on mercury, reductive hydrogen adsorption on platinum and double layer charging. (e) A study of the smallest available time constants was performed, taking into account non-idealities in the electrode such as stray capacitance and resistance of the electrode itself.

  6. Diagnostics of stellar flares from X-ray observations: from the decay to the rise phase

    E-Print Network [OSTI]

    F. Reale

    2007-05-23T23:59:59.000Z

    The diagnostics of stellar flaring coronal loops have been so far largely based on the analysis of the decay phase. We derive new diagnostics from the analysis of the rise and peak phase of stellar flares. We release the assumption of full equilibrium of the flaring loop at the flare peak, according to the frequently observed delay between the temperature and the density maximum. From scaling laws and hydrodynamic simulations we derive diagnostic formulas as a function of observable quantities and times. We obtain a diagnostic toolset related to the rise phase, including the loop length, density and aspect ratio. We discuss the limitations of this approach and find that the assumption of loop equilibrium in the analysis of the decay leads to a moderate overestimate of the loop length. A few relevant applications to previously analyzed stellar flares are shown. The analysis of the flare rise and peak phase complements and completes the analysis of the decay phase.

  7. Rise Time of the Simulated VERITAS 12 m Davies-Cotton Reflector

    SciTech Connect (OSTI)

    White, Richard J. [School of Physics and Astronomy, University of Leeds (United Kingdom)

    2005-02-21T23:59:59.000Z

    The Very Energetic Radiation Imaging Telescope Array System (VERITAS) will utilise Imaging Atmospheric Cherenkov Telescopes (IACTs) based on a Davies-Cotton design with f-number f/1.0 to detect cosmic gamma-rays. Unlike a parabolic reflector, light from the Davies-Cotton does not arrive isochronously at the camera. Here the effect of the telescope geometry on signal rise-time is examined. An almost square-pulse arrival time profile with a rise time of 1.7 ns is found analytically and confirmed through simulation.

  8. The 'Muslim Threat' and the Bharatiya Janata Party's Rise to Power

    E-Print Network [OSTI]

    Nadadur, Anuj

    2006-01-01T23:59:59.000Z

    questions: How and why did the BJP rise to prominence in the 1990s, finally winning a national election in 1998? Though the role of Hindu nationalist feeder organizations was important, this explanation does not account for the characteristics that made... , "Religious Fundamentalism in India and Beyond, Parameters, (2002): 17-33. 16 Kumar, ibid., 17-33. Peace and Democracy in South Asia, Volume 2, Numbers 1 & 2, 2006. 93 Fear of Islamic fundamentalism in India began with the 1977 rise to power...

  9. Pitch-controlled variable-speed wind turbine generation

    SciTech Connect (OSTI)

    Muljadi, E.; Butterfield, C.P.

    2000-03-01T23:59:59.000Z

    Wind energy is a viable option to complement other types of pollution-free generation. In the early development of wind energy, the majority of wind turbines were operated at constant speed. Recently, the number of variable-speed wind turbines installed in wind farms has increased and more wind turbine manufacturers are making variable-speed wind turbines. This paper covers the operation of variable-speed wind turbines with pitch control. The system the authors considered is controlled to generate maximum energy while minimizing loads. The maximization of energy was only carried out on a static basis and only drive train loads were considered as a constraint. In medium wind speeds, the generator and power converter control the wind turbine to capture maximum energy from the wind. In the high wind speed region, the wind turbine is controlled to maintain the aerodynamic power produced by the wind turbine. Two methods to adjust the aerodynamic power were investigated: pitch control and generator load control, both of which are employed to control the operation of the wind turbine. The analysis and simulation shows that the wind turbine can be operated at its optimum energy capture while minimizing the load on the wind turbine for a wide range of wind speeds.

  10. Spatial and Temporal Patterns of Global Onshore Wind Speed Distribution

    SciTech Connect (OSTI)

    Zhou, Yuyu; Smith, Steven J.

    2013-09-09T23:59:59.000Z

    Wind power, a renewable energy source, can play an important role in electrical energy generation. Information regarding wind energy potential is important both for energy related modeling and for decision-making in the policy community. While wind speed datasets with high spatial and temporal resolution are often ultimately used for detailed planning, simpler assumptions are often used in analysis work. An accurate representation of the wind speed frequency distribution is needed in order to properly characterize wind energy potential. Using a power density method, this study estimated global variation in wind parameters as fitted to a Weibull density function using NCEP/CFSR reanalysis data. The estimated Weibull distribution performs well in fitting the time series wind speed data at the global level according to R2, root mean square error, and power density error. The spatial, decadal, and seasonal patterns of wind speed distribution were then evaluated. We also analyzed the potential error in wind power estimation when a commonly assumed Rayleigh distribution (Weibull k = 2) is used. We find that the assumption of the same Weibull parameter across large regions can result in substantial errors. While large-scale wind speed data is often presented in the form of average wind speeds, these results highlight the need to also provide information on the wind speed distribution.

  11. Critical speed measurements in the Tevatron cold compressors

    SciTech Connect (OSTI)

    DeGraff, B.; Bossert, R.; Martinez, A.; Soyars, W.M.; /Fermilab

    2006-01-01T23:59:59.000Z

    The Fermilab Tevatron cryogenic system utilizes high-speed centrifugal cold compressors, manufactured by Ishikawajima-Harima Heavy Industries Co. Ltd. (IHI), for high energy operations. Nominal operating range for these compressors is 43,000 to 85,000 rpm. Past foil bearing failures prompted investigation to determine if critical speeds for operating compressors fall within operating range. Data acquisition hardware and software settings will be discussed for measuring liftoff, first critical and second critical speeds. Several tests provided comparisons between an optical displacement probe and accelerometer measurements. Vibration data and analysis of the 20 Tevatron ring cold compressors will be presented.

  12. Coal-fueled high-speed diesel engine development

    SciTech Connect (OSTI)

    Kakwani, R. M.; Winsor, R. E.; Ryan, III, T. W.; Schwalb, J. A.; Wahiduzzaman, S.; Wilson, Jr., R. P.

    1991-11-01T23:59:59.000Z

    The objectives of this program are to study combustion feasibility by running Series 149 engine tests at high speeds with a fuel injection and combustion system designed for coal-water-slurry (CWS). The following criteria will be used to judge feasibility: (1) engine operation for sustained periods over the load range at speeds from 600 to 1900 rpm. The 149 engine for mine-haul trucks has a rated speed of 1900 rpm; (2) reasonable fuel economy and coal burnout rate; (3) reasonable cost of the engine design concept and CWS fuel compared to future oil prices.

  13. New superlong-stroke slow-speed diesel

    SciTech Connect (OSTI)

    Kunberger, K.

    1994-09-01T23:59:59.000Z

    Changes in the marine market and ship design in recent years created a demand for lower speed two-stroke engines. To meet this demand, MAN B W has added to its MC engine family the new S-versions, with cylinder bores of 80, 70, 60, 50 and 26 cm. The stroke-to-bore ratio was selected to be around 3.8:1, versus 3.2:1 for the previous L-versions. This basically reduced the engine speed to achieve a mean piston speed for improved propeller efficiency, increased the cylinder displacement for higher output, and improved the fuel consumption. 5 figs.

  14. Engine control system having speed-based timing

    DOE Patents [OSTI]

    Willi, Martin L. (Dunlap, IL); Fiveland, Scott B. (Metamora, IL); Montgomery, David T. (Edelstein, IL); Gong, Weidong (Dunlap, IL)

    2012-02-14T23:59:59.000Z

    A control system for an engine having a cylinder is disclosed having an engine valve movable to regulate a fluid flow of the cylinder and an actuator associated with the engine valve. The control system also has a controller in communication with the actuator. The controller is configured to receive a signal indicative of engine speed and compare the engine speed signal with a desired engine speed. The controller is also configured to selectively regulate the actuator to adjust a timing of the engine valve to control an amount of air/fuel mixture delivered to the cylinder based on the comparison.

  15. China Camp's race against the tides: Predicting tidal marsh survival through comparison of project sea level rise elevations and sediment accretion rates

    E-Print Network [OSTI]

    Hannah, Whitney; Kuhn, Marlene

    2012-01-01T23:59:59.000Z

    with 55 inches of sea level rise and continued average marshthe Costs of Adapting to Sea Level Rise: A Case Study of San2009. The Impacts of Sea-Level Rise on the California Coast.

  16. Modeling Tidal Marsh Distribution with Sea-Level Rise: Evaluating the Role of Vegetation, Sediment, and Upland Habitat in Marsh Resiliency

    E-Print Network [OSTI]

    2014-01-01T23:59:59.000Z

    and 180 cm/century sea-level rise at mid suspended sedimentCouncil (2012) Sea-level rise for the coasts of California,to projecting future sea-level rise. Science 315: 368370.

  17. Evaluating Tidal Marsh Sustainability in the Face of Sea-Level Rise: A Hybrid Modeling Approach Applied to San Francisco Bay

    E-Print Network [OSTI]

    Kelly, Maggi

    2011-01-01T23:59:59.000Z

    wetland losses due to sea-level rise: regional and global2009) The impact of sea level rise on developing countries:Coastal impacts due to sea-level rise. Annu Rev Earth Pl Sc

  18. Simplified 1-D Hydrodynamic and Salinity Transport Modeling of the SacramentoSan Joaquin Delta: Sea Level Rise and Water Diversion Effects

    E-Print Network [OSTI]

    Fleenor, William E.; Bombardelli, Fabian

    2013-01-01T23:59:59.000Z

    salinity simulations of sea level rise scenarios. AppendixSan Joaquin Delta: Sea Level Rise and Water Diversiona 1-D model of sea level rise in an estuary must account for

  19. Taking Control of Green Speed Thomas A. Nikolai, Ph.D.

    E-Print Network [OSTI]

    to know about green speed A lot of green speed misinformation Poor communication cited #1 problem GreenTaking Control of Green Speed Thomas A. Nikolai, Ph.D. The Doctor of Green Speed nikolait finds when requesting green speed help are.... #12;The 3 most common answers a superintendent finds when

  20. Heavy-Duty Stoichiometric Compression Ignition Engine with Improved Fuel Economy over Alternative Technologies for Meeting 2010 On-Highway Emission

    SciTech Connect (OSTI)

    Kirby J. Baumgard; Richard E. Winsor

    2009-12-31T23:59:59.000Z

    The objectives of the reported work were: to apply the stoichiometric compression ignition (SCI) concept to a 9.0 liter diesel engine; to obtain engine-out NO{sub x} and PM exhaust emissions so that the engine can meet 2010 on-highway emission standards by applying a three-way catalyst for NO{sub x} control and a particulate filter for PM control; and to simulate an optimize the engine and air system to approach 50% thermal efficiency using variable valve actuation and electric turbo compounding. The work demonstrated that an advanced diesel engine can be operated at stoichiometric conditions with reasonable particulate and NOx emissions at full power and peak torque conditions; calculated that the SCI engine will operate at 42% brake thermal efficiency without advanced hardware, turbocompounding, or waste heat recovery; and determined that EGR is not necessary for this advanced concept engine, and this greatly simplifies the concept.

  1. The singularity at the tip of the rising plane bubble: The case of nonzero surface tension

    E-Print Network [OSTI]

    Daripa, Prabir

    The singularity at the tip of the rising plane bubble: The case of nonzero surface tension Prabir pointed bubble in the presenceof surface tension. These bubbles have been recently obtained by Vanden to find the apexangle as a function of the speedof the bubbles for a fixed value of surface tension

  2. Holoparasitic Rafflesiaceae possess the most reduced endophytes and yet give rise to the world's largest flowers

    E-Print Network [OSTI]

    Holoparasitic Rafflesiaceae possess the most reduced endophytes and yet give rise to the world, the parasite is a myce- lium-like endophyte living inside their grapevine hosts. This study provides a comprehensive treatment of the endophytic vegetative body for all three genera of Rafflesiaceae (Rafflesia

  3. Planktonic Foraminifera Record of the Mid Albian Sea Level Rise, Upper Magdalena Valley, Colombia

    E-Print Network [OSTI]

    Sukop, Mike

    Planktonic Foraminifera Record of the Mid Albian Sea Level Rise, Upper Magdalena Valley, Colombia Cretaceous unit in southern Colombia named "Tetuán Limestone", have allowed the comparison between planktic foraminifera interval zones in Colombia: Ticinella primula and Biticinella breggiensis, with late

  4. Lattice Boltzmann simulation of the rise and dissolution of two-1 dimensional immiscible droplets2

    E-Print Network [OSTI]

    Zhang, Dongxiao

    transport of nonaqueous-phase liquid contaminant in groundwater. For example, in geological45 carbon to buoyancy leads to brine flowing around it, which accelerates the dissolution of47 scCO2. In addition, the dissolved scCO2 slightly increases the density of brine, which might give48 rise to downward density

  5. An experimental study of a high-rise building model in tornado-like winds

    E-Print Network [OSTI]

    Hu, Hui

    the characteristics of wake vortex and flow structures around a high-rise building model as well as the resultant wind significantly different from those in conventional straight-line winds. The detailed flow field measurements information about the tornado- induced wind loads and wind field information around the civil structures due

  6. Rise of the Robots A look at the growth of robotics globally

    E-Print Network [OSTI]

    Levinson, David M.

    Rise of the Robots A look at the growth of robotics globally Minnesota's emerging robotics cluster #12;Global publication based in MN Mike Davin Editor, The Business of Robotics Communications Chair, Association for Unmanned Vehicle Systems International Advisory Committee, Robotics Alley

  7. Global and regional exposure to large rises in sea-level: a sensitivity analysis

    E-Print Network [OSTI]

    Watson, Andrew

    , but investment in the protection is required. While the costs of sea-level rise increase due to greater damage protection, investment is diverted from other uses. Much research remains to refine our understanding International Max Planck Research School on Earth System Modelling, Hamburg, Germany Research Unit

  8. Constraint of the CO2 rise by new atmospheric carbon isotopic measurements during the last deglaciation

    E-Print Network [OSTI]

    Chappellaz, Jérôme

    Click Here for Full Article Constraint of the CO2 rise by new atmospheric carbon isotopic increase of atmospheric carbon dioxide (CO2) during the last glacialinterglacial climatic transition remain debated. We analyzed the parallel evolution of CO2 and its stable carbon isotopic ratio (d13 CO2

  9. Induced abortion ratio in modern Sweden falls with age, but rises again before menopause

    E-Print Network [OSTI]

    Tullberg, Birgitta

    Induced abortion ratio in modern Sweden falls with age, but rises again before menopause Birgitta S. Tullberga, *, Virpi Lummaab,1 a Department of Zoology, University of Stockholm, S-10691 Stockholm, Sweden b than on age per se. We used data on abortions and births in Sweden during 1994 to investigate how

  10. Past and future sea-level rise along the coast of North Carolina, United States

    E-Print Network [OSTI]

    Kopp, Robert E; Kemp, Andrew C; Tebaldi, Claudia

    2014-01-01T23:59:59.000Z

    Focusing on factors that cause relative sea-level (RSL) rise to differ from the global mean, we evaluate RSL trajectories for North Carolina, United States, in the context of tide gauge and geological sea-level proxy records spanning the last $\\mathord{\\sim}$11,000 years. RSL rise was fastest ($\\mathord{\\sim}$7 mm/yr) during the early Holocene and decreased over time. During the Common Era before the 19th century, RSL rise ($\\mathord{\\sim}$0.7 to 1.1 mm/yr) was driven primarily by glacio-isostatic adjustment, dampened by tectonic uplift along the Cape Fear Arch. Ocean/atmosphere dynamics caused centennial variability of up to $\\mathord{\\sim}$0.6 mm/yr around the long-term rate. It is extremely likely (probability $P = 0.95$) that 20th century RSL rise at Sand Point, NC, (2.8 $\\pm$ 0.5 mm/yr) was faster than during any other century in $\\geq2,900$ years. Projections based on a fusion of process models, statistical models, expert elicitation and expert assessment indicate that RSL at Wilmington, NC, is very lik...

  11. HiRISE observations of new impact craters exposing Martian ground ice

    E-Print Network [OSTI]

    Byrne, Shane

    ice rather than ice-cemented regolith. Although some clean ice may be produced by the impact processHiRISE observations of new impact craters exposing Martian ground ice Colin M. Dundas1 , Shane craters or clusters have been observed to excavate bright material inferred to be ice at mid

  12. From Bad to Worse: Senior economic inSecurity on the riSe

    E-Print Network [OSTI]

    Snider, Barry B.

    From Bad to Worse: Senior economic inSecurity on the riSe Tatjana Meschede Laura Sullivan Thomas the Senior Financial Stability Index, economic insecurity among senior households increased by one demographic groups, economic security of seniors has deteriorated further. Contrary to the popular belief

  13. The Rise of Oxygen over the Past 205 Million Years and the Evolution

    E-Print Network [OSTI]

    The Rise of Oxygen over the Past 205 Million Years and the Evolution of Large Placental Mammals to the present, we modeled oxygen concentrations over the past 205 million years. Our analysis indicates that atmospheric oxygen approximately doubled over this period, with rela- tively rapid increases in the early

  14. To begin, what gave rise to this project on anticipatory learning for climate change

    E-Print Network [OSTI]

    Giles, C. Lee

    in developing countries to adapt to uncertain futures IN RECENT DECADES, the spectre of global climate change To begin, what gave rise to this project on anticipatory learning for climate change adaptation processes for climate change adaptation (CCA) whilst working on a USAID funded project, Climate Change

  15. METHANE IN HYDROTF{ERMAL PLUMES ALONG TFIEEAST PACIFIC RISE, 28-32"5

    E-Print Network [OSTI]

    Luther, Douglas S.

    METHANE IN HYDROTF{ERMAL PLUMES ALONG TFIEEAST PACIFIC RISE, 28-32"5 A TFMSISSUBMITTEDEPR. Molar ratiosof methane/manganesein plumesover segmentW3 indicatedmethanedid not covary with manganese,nor did methanecovarywith any otherhydrothermaltracersuchasnephelometryor heatanomalyon this segment.Methane

  16. Pertussis is on the rise Whooping Cough (or pertussis) is Not Just For Kids.........

    E-Print Network [OSTI]

    Wilcock, William

    Pertussis is on the rise Whooping Cough (or pertussis) is Not Just For Kids......... Pertussis, also known as "whooping cough," is a communicable bacterial disease that is spread through droplets from the mouth and nose when a person with pertussis coughs, sneezes, or talks. This disease has

  17. Our winters of discontent: Addressing the problem of rising home-heating costs1

    E-Print Network [OSTI]

    Hughes, Larry

    on fossil fuels by using solar energy, reducing residential energy demand, and promoting district heating. 1ERG/200602 Our winters of discontent: Addressing the problem of rising home-heating costs1 Larry Residential space heating is a necessity in northern countries such as Canada. With over 70 percent

  18. CBER-DETR Nevada Coincident and Leading Employment Coincident Index Rises, Leading Index Pauses

    E-Print Network [OSTI]

    Ahmad, Sajjad

    the seasonally adjusted data reported by the Bureau of Labor Statistics. The Nevada Coincident Employment IndexCBER-DETR Nevada Coincident and Leading Employment Indexes1 Coincident Index Rises, Leading Index Pauses The Nevada Coincident Employment Index measures the ups and downs of the Nevada economy using

  19. $ ^T)) \\ ^ / f l \\ Rise-M-2597 of Mass and Velocity Measurements

    E-Print Network [OSTI]

    in flight without use of optical equipment has been tested. The mass is measured by a microwave system, control of density profile, diagnostic purposes, etc.. In any case it is imports it to be able to measureh- $ ^T)) \\ ^ / f l \\ Rise-M-2597 of Mass and Velocity Measurements on Pellets in Flight

  20. Surficial sediments of the continental rise and slope, Niger Delta, West Africa: properties and geology

    E-Print Network [OSTI]

    Kobilka, David William

    2012-06-07T23:59:59.000Z

    useful, however sparse data on the region. Using a suite of piston cores from the lower continental slope and continental rise, this study set out to describe, illustrate, and analyze the surficial sediments of that region. With the aid of previous...

  1. Identification of matrix conditions that give rise to the linear coupling resonances

    SciTech Connect (OSTI)

    Gardner,C.J.

    2009-03-01T23:59:59.000Z

    General definitions of horizontal and vertical amplitudes for linear coupled motion are developed from the normal form of the one-turn matrix. This leads to the identification of conditions on the matrix that give rise to the linear coupling sum and difference resonances. The correspondence with the standard hamiltonian treatment of the resonances is discussed.

  2. Detecting and Blocking Network Attacks at Ultra High Speeds

    SciTech Connect (OSTI)

    Paxson, Vern

    2010-11-29T23:59:59.000Z

    Stateful, in-depth, in-line traffic analysis for intrusion detection and prevention has grown increasingly more difficult as the data rates of modern networks rise. One point in the design space for high-performance network analysis - pursued by a number of commercial products - is the use of sophisticated custom hardware. For very high-speed processing, such systems often cast the entire analysis process in ASICs. This project pursued a different architectural approach, which we term Shunting. Shunting marries a conceptually quite simple hardware device with an Intrusion Prevention System (IPS) running on commodity PC hardware. The overall design goal is was to keep the hardware both cheap and readily scalable to future higher speeds, yet also retain the unparalleled flexibility that running the main IPS analysis in a full general-computing environment provides. The Shunting architecture we developed uses a simple in-line hardware element that maintains several large state tables indexed by packet header fields, including IP/TCP flags, source and destination IP addresses, and connection tuples. The tables yield decision values the element makes on a packet-by-packet basis: forward the packet, drop it, or divert ('shunt') it through the IPS (the default). By manipulating table entries, the IPS can, on a fine-grained basis: (i) specify the traffic it wishes to examine, (ii) directly block malicious traffic, and (iii) 'cut through' traffic streams once it has had an opportunity to 'vet' them, or (iv) skip over large items within a stream before proceeding to further analyze it. For the Shunting architecture to yield benefits, it needs to operate in an environment for which the monitored network traffic has the property that - after proper vetting - much of it can be safely skipped. This property does not universally hold. For example, if a bank needs to examine all Web traffic involving its servers for regulatory compliance, then a monitor in front of one of the bank's server farms cannot safely omit a subset of the traffic from analysis. In this environment, Shunting cannot realize its main performance benefits, and the monitoring task likely calls for using custom hardware instead. However, in many other environments we find Shunting holds promise for delivering major performance gains. This arises due to the the widely documented 'heavy tail' nature of most forms of network traffic, which we might express as 'a few of the connections carry just about all the bytes.' The key additional insight is '... and very often for these few large connections, the very beginning of the connection contains nearly all the information of interest from a security analysis perspective.' We argue that this second claim holds because it is at the beginning of connections that authentication exchanges occur, data or file names and types are specified, request and reply status codes conveyed, and encryption is negotiated. Once these occur, we have seen most of the interesting facets of the dialog. Certainly the remainder of the connection might also yield some grist for analysis, but this is generally less likely, and thus if we want to lower analysis load at as small a loss as possible of information relevant to security analysis, we might best do so by skipping the bulk of large connections. In a different context, the 'Time Machine' work by Kornexl and colleagues likewise shows that in some environments we can realize major reductions in the volume of network traffic processed, by limiting the processing to the first 10-20 KB of each connection. As a concrete example, consider an IPS that monitors SSH traffic. When a new SSH connection arrives and the Shunt fails to find an entry for it in any of its tables (per-address, per-port, per-connection), it executes the default action of diverting the connection through the IPS. The IPS analyzes the beginning of the connection in this fashion. As long as it is satisified with the dialog, it reinjects the packets forwarded to it so that the connection can continue. If the connection successfully

  3. Hydrodynamic evaluation of high-speed semi-SWATH vessels

    E-Print Network [OSTI]

    Guttenplan, Adam (Adam David)

    2007-01-01T23:59:59.000Z

    High-speed semi-displacement vessels have enjoyed rapid development and widespread use over the past 25 years. Concurrent with their growth as viable commercial and naval platforms, has been the advancement of three-dimensional ...

  4. A Machian Version of Einstein's Variable Speed of Light Theory

    E-Print Network [OSTI]

    Unzicker, Alexander

    2015-01-01T23:59:59.000Z

    It is little known that while developing general relativity, Einstein's very first idea was a variable speed of light theory. Indeed spacetime curvature can be mimicked by a speed of light $c(r)$ that depends on the distribution of masses. Einstein's 1911 theory was considerably improved by Robert Dicke in 1957, but only recently the equivalence of the variable speed of light approach to the conventional formalism has been demonstrated (Broekaert, 2008). Using Green's functions, we show that Einstein's 1911 idea can be expressed in an analytic form, similar to the Poisson equation. Using heuristic arguments, we derive then a simple formula that directly relates curvature $w$ to the local speed of light, $w= -c^2 \\Delta \\frac{1}{c^2}$. In contrast to the conventional formulation, this allows for a Machian interpretation of general relativity and the gravitational constant $G$. Gravity, though described by local equations, would have its origin in all other masses in the universe.

  5. A Machian Version of Einstein's Variable Speed of Light Theory

    E-Print Network [OSTI]

    Alexander Unzicker; Jan Preuss

    2015-03-13T23:59:59.000Z

    It is little known that while developing general relativity, Einstein's very first idea was a variable speed of light theory. Indeed spacetime curvature can be mimicked by a speed of light $c(r)$ that depends on the distribution of masses. Einstein's 1911 theory was considerably improved by Robert Dicke in 1957, but only recently the equivalence of the variable speed of light approach to the conventional formalism has been demonstrated (Broekaert, 2008). Using Green's functions, we show that Einstein's 1911 idea can be expressed in an analytic form, similar to the Poisson equation. Using heuristic arguments, we derive then a simple formula that directly relates curvature $w$ to the local speed of light, $w= -c^2 \\Delta \\frac{1}{c^2}$. In contrast to the conventional formulation, this allows for a Machian interpretation of general relativity and the gravitational constant $G$. Gravity, though described by local equations, would have its origin in all other masses in the universe.

  6. On advancement of high speed atomic force microscope technology

    E-Print Network [OSTI]

    SooHoo, Kimberly E

    2008-01-01T23:59:59.000Z

    High speed atomic force microscopy (AFM) is a developing process in which nanoscale objects, such as crystal structures or strands of DNA, can be imaged at rates fast enough to watch processes as they occur. Although current ...

  7. The effect of rainfall on freeway travel speeds

    E-Print Network [OSTI]

    Holdener, Douglas Joseph

    1997-01-01T23:59:59.000Z

    Studies on the effect of rainfall on freeway capacity found that capacity during wet conditions was 8 percent to 24 percent lower than average capacity during dry conditions. Based on these findings, Greenshield's speed-flow model was calibrated...

  8. Microsoft Word - idaho_wind_speed_summary.doc

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

    Ft. Hall, ID Sites Wheat Grass Ridge Average Wind Speeds Site 0001 (66 ft. (20m) tower, erected week of 11101, data started on 11201) N. 42 deg. 44.762', W. 112 deg. 41.011'...

  9. A preliminary evaluation of a speed threshold incident detection algorithm

    E-Print Network [OSTI]

    Kolb, Stephanie Lang

    1996-01-01T23:59:59.000Z

    Traffic management centers can reduce emergency vehicle response time to incidents with immediate detection of incidents. Traffic management centers detect incidents by applying speed, occupancy, and/or volume loop detector data to an incident...

  10. automated speed enforcement: Topics by E-print Network

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

    Websites Summary: of a partial automation since they act on the control part of the vehicle. This increasing automationABV- A Low Speed Automation Project to Study the...

  11. adjustable speed drives: Topics by E-print Network

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

    Websites Summary: of a partial automation since they act on the control part of the vehicle. This increasing automationABV- A Low Speed Automation Project to Study the...

  12. adjustable speed drive: Topics by E-print Network

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

    Websites Summary: of a partial automation since they act on the control part of the vehicle. This increasing automationABV- A Low Speed Automation Project to Study the...

  13. Probabilistic Wind Speed Forecasting using Ensembles and Bayesian Model Averaging

    E-Print Network [OSTI]

    Washington at Seattle, University of

    is to issue deterministic forecasts based on numerical weather prediction models. Uncertainty canProbabilistic Wind Speed Forecasting using Ensembles and Bayesian Model Averaging J. Mc discretization than is seen in other weather quantities. The prevailing paradigm in weather forecasting

  14. High speed imaging of transient non-Newtonian fluid phenomena

    E-Print Network [OSTI]

    Gallup, Benjamin H. (Benjamin Hodsdon), 1982-

    2004-01-01T23:59:59.000Z

    In this thesis, I investigate the utility of high speed imaging for gaining scientific insight into the nature of short-duration transient fluid phenomena, specifically applied to the Kaye effect. The Kaye effect, noted ...

  15. High Speed Flywheels for Integrated Energy Storage and Attitude Control

    E-Print Network [OSTI]

    Hall, Christopher D.

    High Speed Flywheels for Integrated Energy Storage and Attitude Control Christopher D. Hall. Decomposition of the space of internal torques separates the attitude control functionfrom the energy storage simultaneously performing energy storage and extraction operations. 1 Introduction The power engineering

  16. A Unified View on Speeded Categorization Hongbin Gu 1

    E-Print Network [OSTI]

    Ji, Chuanshu

    A Unified View on Speeded Categorization Hongbin Gu 1 Chuanshu Ji 2 1 Introduction The research of Psychiatry, School of Medicine, University of North Carolina, Chapel Hill, NC 27599, USA; hongbin

  17. Effects of various inefficiencies in rowing on shell speed

    E-Print Network [OSTI]

    Young, Stephen F., Jr

    2009-01-01T23:59:59.000Z

    First order predictions were made in determining the effects of various sources of inefficiency in rowing on shell speed. These predictions were then tested using a MATLAB model of the rowing stroke. The model simulates ...

  18. RESEARCH ARTICLE Controlling speed and direction during interception

    E-Print Network [OSTI]

    . Turning rate was controlled using a steering wheel and speed was controlled using a foot pedal (Wann and Land 2000), braking (Lee 1976; Yilmaz and Warren 1995), and fly ball catching (Chapman 1968

  19. A high-speed hysteresis motor spindle for machining applications

    E-Print Network [OSTI]

    Bayless, Jacob D. (Jacob Daniel)

    2014-01-01T23:59:59.000Z

    An analysis of suitable drive technologies for use in a new high-speed machining spindle was performed to determine critical research areas. The focus is on a hysteresis motor topology using a solid, inherently-balanced ...

  20. Rotary-linear axes for high speed machining

    E-Print Network [OSTI]

    Liebman, Michael Kevin, 1974-

    2001-01-01T23:59:59.000Z

    This thesis presents the design, analysis, fabrication, and control of a rotary-linear axis; this axis is a key subsystem for high speed, 5-axis machine tools intended for fabricating centimeter-scale parts. The rotary-linear ...

  1. Microsoft Word - utah_wind_speed_summary.doc

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

    Jeff Anderson Site Castle Valley, Utah Average Wind Speeds Site 0006 (66 ft. (20m) tower, data started on 110601, data ended 112102) N. 38.635 deg., W. 109.397 deg. Elevation...

  2. Very High Fuel Economy, Heavy Duty, Constant Speed, Truck Engine Optimized Via Unique Energy Recovery Turbines and Facilitated High Efficiency Continuously Variable Drivetrain

    SciTech Connect (OSTI)

    Bahman Habibzadeh

    2010-01-31T23:59:59.000Z

    The project began under a corporative agreement between Mack Trucks, Inc and the Department of Energy starting from September 1, 2005. The major objective of the four year project is to demonstrate a 10% efficiency gain by operating a Volvo 13 Litre heavy-duty diesel engine at a constant or narrow speed and coupled to a continuously variable transmission. The simulation work on the Constant Speed Engine started on October 1st. The initial simulations are aimed to give a basic engine model for the VTEC vehicle simulations. Compressor and turbine maps are based upon existing maps and/or qualified, realistic estimations. The reference engine is a MD 13 US07 475 Hp. Phase I was completed in May 2006 which determined that an increase in fuel efficiency for the engine of 10.5% over the OICA cycle, and 8.2% over a road cycle was possible. The net increase in fuel efficiency would be 5% when coupled to a CVT and operated over simulated highway conditions. In Phase II an economic analysis was performed on the engine with turbocompound (TC) and a Continuously Variable Transmission (CVT). The system was analyzed to determine the payback time needed for the added cost of the TC and CVT system. The analysis was performed by considering two different production scenarios of 10,000 and 60,000 units annually. The cost estimate includes the turbocharger, the turbocompound unit, the interstage duct diffuser and installation details, the modifications necessary on the engine and the CVT. Even with the cheapest fuel and the lowest improvement, the pay back time is only slightly more than 12 months. A gear train is necessary between the engine crankshaft and turbocompound unit. This is considered to be relatively straight forward with no design problems.

  3. Design of high temperature high speed electromagnetic axial thrust bearing

    E-Print Network [OSTI]

    Mohiuddin, Mohammad Waqar

    2002-01-01T23:59:59.000Z

    DESIGN OF HIGH TEMPERATURE HIGH SPEED ELECTROMAGNETIC AXIAL THRUST BEARING A Thesis by MOHAMMAD WAQAR MOHIUDDIN Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE December 2002 Major Subject: Mechanical Engineering DESIGN OF HIGH TEMPERATURE HIGH SPEED ELECTROMAGNETIC AXIAL THRUST BEARING A Thesis by MOHAMMAD WAQAR MOHIUDDIN Submitted to Texas A&M University in partial fulfillment...

  4. Energy and Reliability Considerations For Adjustable Speed Driven Pumps

    E-Print Network [OSTI]

    Casada, D.

    ENERGY AND RELIABILITY CONSIDERATIONS FOR ADJUSTABLE SPEED DRIVEN PUMPS Don Casada Senior Development Associate ABSTRACT Centrifugal devices such as pumps, fans, and compressors follow a general set of speed affinity laws: Q2 = QI *( N z... there is no static head, the system head, like the pump head, is proportional to the velocity, or flow rate, squared. As a result. the pump affinity laws also indicate how the pump and system will work together to define the operating point in such a system...

  5. An evaluation of inductance loop detectors for speed measurement accuracy

    E-Print Network [OSTI]

    Cronin, Brian Patrick

    2012-06-07T23:59:59.000Z

    AN EVALUATION OF INDUCTANCE LOOP DETECTORS FOR SPEED MEASUREMENT ACCURACY A Thesis by BRIAN PATRICK CRONIN Submitted to the OfBce of Graduate Studies of Texas AJkM University in partial fulSllment of the requirements for the degree of MASTER... OF SCIENCE December 1994 Major Subject: Civil Engineering AN EVALUATION OF INDUCTANCE LOOP DETECTORS FOR SPEED MEASUREMENT ACCURACY A Thesis by BRIAN PATRICK CRONIN Submitted to Texas ~M University in partial fulfillment of the requirements...

  6. The Speed of Light as a Dilaton Field

    E-Print Network [OSTI]

    Walter Wyss

    1997-12-09T23:59:59.000Z

    Through dimensional analysis, eliminating the physical time, we identify the speed of light as a dilaton field. This leads to a restmass zero, spin zero gauge field which we call the speedon field. The complete Lagrangian for gravitational, electromagnetic and speedon field interactions with a charged scalar field, representing matter, is given. We then find solutions for the gravitational-electromagnetic-speedon field equations. This then gives an expression for the speed of light.

  7. Texas Hydrogen Highway Fuel Cell Hybrid Bus and Fueling Infrastructure Technology Showcase - Final Scientific/Technical Report

    SciTech Connect (OSTI)

    Hitchcock, David

    2012-06-29T23:59:59.000Z

    The Texas Hydrogen Highway project has showcased a hydrogen fuel cell transit bus and hydrogen fueling infrastructure that was designed and built through previous support from various public and private sector entities. The aim of this project has been to increase awareness among transit agencies and other public entities on these transportation technologies, and to place such technologies into commercial applications, such as a public transit agency. The initial project concept developed in 2004 was to show that a skid-mounted, fully-integrated, factory-built and tested hydrogen fueling station could be used to simplify the design, and lower the cost of fueling infrastructure for fuel cell vehicles. The approach was to design, engineer, build, and test the integrated fueling station at the factory then install it at a site that offered educational and technical resources and provide an opportunity to showcase both the fueling station and advanced hydrogen vehicles. The two primary technology components include: Hydrogen Fueling Station: The hydrogen fueling infrastructure was designed and built by Gas Technology Institute primarily through a funding grant from the Texas Commission on Environmental Quality. It includes hydrogen production, clean-up, compression, storage, and dispensing. The station consists of a steam methane reformer, gas clean-up system, gas compressor and 48 kilograms of hydrogen storage capacity for dispensing at 5000 psig. The station is skid-mounted for easy installation and can be relocated if needed. It includes a dispenser that is designed to provide temperaturecompensated fills using a control algorithm. The total station daily capacity is approximately 50 kilograms. Fuel Cell Bus: The transit passenger bus built by Ebus, a company located in Downey, CA, was commissioned and acquired by GTI prior to this project. It is a fuel cell plug-in hybrid electric vehicle which is ADA compliant, has air conditioning sufficient for Texas operations, and regenerative braking for battery charging. It uses a 19.3 kW Ballard PEM fuel cell, will store 12.6 kg of hydrogen at 350 Bar, and includes a 60 kWh battery storage system. The objectives of the project included the following: (a) To advance commercialization of hydrogen-powered transit buses and supporting infrastructure; (b) To provide public outreach and education by showcasing the operation of a 22-foot fuel cell hybrid shuttle bus and Texas first hydrogen fueling infrastructure; and (c) To showcase operation of zero-emissions vehicle for potential transit applications. As mentioned above, the project successfully demonstrated an early vehicle technology, the Ebus plug-in hybrid fuel cell bus, and that success has led to the acquisition of a more advanced vehicle that can take advantage of the same fueling infrastructure. Needed hydrogen station improvements have been identified that will enhance the capabilities of the fueling infrastructure to serve the new bus and to meet the transit agency needs. Over the course of this project, public officials, local government staff, and transit operators were engaged in outreach and education activities that acquainted them with the real world operation of a fuel cell bus and fueling infrastructure. Transit staff members in the Dallas/Ft. Worth region were invited to a workshop in Arlington, Texas at the North Central Texas Council of Governments to participate in a workshop on hydrogen and fuel cells, and to see the fuel cell bus in operation. The bus was trucked to the meeting for this purpose so that participants could see and ride the bus. Austin area transit staff members visited the fueling site in Austin to be briefed on the bus and to participate in a fueling demonstration. This led to further meetings to determine how a fuel cell bus and fueling station could be deployed at Capital Metro Transit. Target urban regions that expressed additional interest during the project in response to the outreach meetings and showcase events include San Antonio and Austin, Texas. In summary, the project objectives wer

  8. ABV-A Low Speed Automation Project to Study the Technical Feasibility of Fully Automated Driving

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    on vehicle automation since many years. From 1987 to 1995 the European Commission funded the 800 million concepts of vehicles designed as fully automated vehicles [1]. Beyond its fully automation ability Automated Highway System Consortium (NAHSC) that demonstrated about 20 automated vehicles in Demo'97 on I-15

  9. On-line implementation of an adaptive speed filter and its experimental demonstration

    E-Print Network [OSTI]

    Abdul, Anis Mohamed

    2012-06-07T23:59:59.000Z

    previously developed neural network speed filter is implemented for on-line induction motor speed estimation. The speed filter is constructed using a combination of five neural networks. A neural networks framework developed in this work is used to construct...

  10. E-Print Network 3.0 - ac adjustable speed Sample Search Results

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

    speed wind turbine concept 50 4.1 Variable speed wind turbine... of a variable speed wind turbine with DFIG 54 4.4 Doubly-fed induction generator control 57 4.4.1 System......

  11. E-Print Network 3.0 - adjustable speed ac Sample Search Results

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

    speed wind turbine concept 50 4.1 Variable speed wind turbine... of a variable speed wind turbine with DFIG 54 4.4 Doubly-fed induction generator control 57 4.4.1 System......

  12. Fact #851: December 15, 2014 The Average Number of Gears used in Transmissions Continues to Rise Dataset

    Broader source: Energy.gov [DOE]

    Excel file with dataset for Fact #851: December 15, 2014 The Average Number of Gears used in Transmissions Continues to Rise

  13. Fact #839: September 22, 2014 World Petroleum Consumption Continues to Rise despite Declines from the United States and Europe- Dataset

    Broader source: Energy.gov [DOE]

    Excel file with dataset for Fact #839: World Petroleum Consumption Continues to Rise despite Declines from the United States and Europe

  14. High speed diesel performance/combustion characteristics correlated with structural composition of tar sands derived experimental fuels

    SciTech Connect (OSTI)

    Webster, G.D.; Chiappetta, S.J.; Neill, W.S.; Glavihcevski, B.; Stringer, P.L.

    1985-01-01T23:59:59.000Z

    Two Canadian tar sands derived experimental diesel fuels with cetane numbers of 26 and 36 and a reference fuel with a cetane number of 47 were tested in a Deutz (FIL511D), single cylinder, 4 stroke, naturally aspirated research engine. The fuels were tested at intake and cooling air temperatures of 30 and 0/sup 0/C. The 36 cetane number fuel was tested with advanced, rated and retarded injection timings. Poor engine speed stability at light loads and excessive rates of combustion pressure rise were experienced with the lowest cetane number fuel. Detailed performance/combustion behavior is presented and a correlation with fuel structural compostiton is made. The analytical techniques used to characterize the fuels included liquid chromatography, gas chromatography mass spectrometry (GC-MS) and proton nuclear magnetic resonance spectrometry (PNMR).

  15. Cloud speed impact on solar variability scaling ?? Application to the wavelet variability model

    E-Print Network [OSTI]

    Lave, Matthew; Kleissl, Jan

    2013-01-01T23:59:59.000Z

    Kleissl, J. , 2013. Deriving cloud velocity from an array ofCloud Speed Impact on Solar Variability Scaling -this work, we determine from cloud speeds. Cloud simulator

  16. Fact #740: August 13, 2012 Interest in Smaller Vehicles is on the Rise |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeat PumpRecord ofESPCofConstructionofFY 20112: July|Rise

  17. Uranium in iron formations and the rise of atmospheric oxygen C.A. Partin a,

    E-Print Network [OSTI]

    Konhauser, Kurt

    Uranium in iron formations and the rise of atmospheric oxygen C.A. Partin a, , S.V. Lalonde b , N.J. Planavsky c , A. Bekker a , O.J. Rouxel b,d , T.W. Lyons e , K.O. Konhauser f a Dept. of Geological Sciences), UMR 6538, Technopôle Brest-Iroise, 29280 Plouzané, France c Department of Geology and Geophysics, Yale

  18. Synchronization of high speed framing camera and intense electron-beam accelerator

    SciTech Connect (OSTI)

    Cheng Xinbing; Liu Jinliang; Hong Zhiqiang; Qian Baoliang [College of Opto-electronic Science and Engineering, National University of Defense Technology, Changsha, Hunan 410073 (China)

    2012-06-15T23:59:59.000Z

    A new trigger program is proposed to realize the synchronization of high speed framing camera (HSFC) and intense electron-beam accelerator (IEBA). The trigger program which include light signal acquisition radiated from main switch of IEBA and signal processing circuit could provide a trigger signal with rise time of 17 ns and amplitude of about 5 V. First, the light signal was collected by an avalanche photodiode (APD) module, and the delay time between the output voltage of APD and load voltage of IEBA was tested, it was about 35 ns. Subsequently, the output voltage of APD was processed further by the signal processing circuit to obtain the trigger signal. At last, by combining the trigger program with an IEBA, the trigger program operated stably, and a delay time of 30 ns between the trigger signal of HSFC and output voltage of IEBA was obtained. Meanwhile, when surface flashover occurred at the high density polyethylene sample, the delay time between the trigger signal of HSFC and flashover current was up to 150 ns, which satisfied the need of synchronization of HSFC and IEBA. So the experiment results proved that the trigger program could compensate the time (called compensated time) of the trigger signal processing time and the inherent delay time of the HSFC.

  19. Low Wind Speed Technology Phase II: Investigation of the Application of Medium-Voltage Variable-Speed Drive Technology to Improve the Cost of Energy from Low Wind Speed Turbines; Behnke, Erdman and Whitaker Engineering, Inc.

    SciTech Connect (OSTI)

    Not Available

    2006-03-01T23:59:59.000Z

    This fact sheet describes a subcontract with Behnke, Erdman & Whitaker Engineering, Inc. to test the feasibility of applying medium-voltage variable-speed drive technology to low wind speed turbines.

  20. Evidence of thermonuclear flame spreading on neutron stars from burst rise oscillations

    E-Print Network [OSTI]

    Chakraborty, Manoneeta

    2014-01-01T23:59:59.000Z

    Burst oscillations during the rising phases of thermonuclear X-ray bursts are usually believed to originate from flame spreading on the neutron star surface. However, the decrease of fractional oscillation amplitude with rise time, which provides a main observational support for the flame spreading model, have so far been reported from only a few bursts. Moreover, the non-detection and intermittent detections of rise oscillations from many bursts are not yet understood considering the flame spreading scenario. Here, we report the decreasing trend of fractional oscillation amplitude from an extensive analysis of a large sample of Rossi X-ray Timing Explorer Proportional Counter Array bursts from ten neutron star low-mass X-ray binaries. This trend is 99.99% significant for the best case, which provides, to the best of our knowledge, by far the strongest evidence of such trend. Moreover, it is important to note that an opposite trend is not found from any of the bursts. The concave shape of the fractional ampli...

  1. High-Speed Cylindrical Collapse of Two Perfect Fluids

    E-Print Network [OSTI]

    M. Sharif; Zahid Ahmad

    2007-04-20T23:59:59.000Z

    In this paper, the study of the gravitational collapse of cylindrically distributed two perfect fluid system has been carried out. It is assumed that the collapsing speeds of the two fluids are very large. We explore this condition by using the high-speed approximation scheme. There arise two cases, i.e., bounded and vanishing of the ratios of the pressures with densities of two fluids given by $c_s, d_s$. It is shown that the high-speed approximation scheme breaks down by non-zero pressures $p_1, p_2$ when $c_s, d_s$ are bounded below by some positive constants. The failure of the high-speed approximation scheme at some particular time of the gravitational collapse suggests the uncertainity on the evolution at and after this time. In the bounded case, the naked singularity formation seems to be impossible for the cylindrical two perfect fluids. For the vanishing case, if a linear equation of state is used, the high-speed collapse does not break down by the effects of the pressures and consequently a naked singularity forms. This work provides the generalisation of the results already given by Nakao and Morisawa [1] for the perfect fluid.

  2. MEASUREMENT OF WIND SPEED FROM COOLING LAKE THERMAL IMAGERY

    SciTech Connect (OSTI)

    Garrett, A; Robert Kurzeja, R; Eliel Villa-Aleman, E; Cary Tuckfield, C; Malcolm Pendergast, M

    2009-01-20T23:59:59.000Z

    The Savannah River National Laboratory (SRNL) collected thermal imagery and ground truth data at two commercial power plant cooling lakes to investigate the applicability of laboratory empirical correlations between surface heat flux and wind speed, and statistics derived from thermal imagery. SRNL demonstrated in a previous paper [1] that a linear relationship exists between the standard deviation of image temperature and surface heat flux. In this paper, SRNL will show that the skewness of the temperature distribution derived from cooling lake thermal images correlates with instantaneous wind speed measured at the same location. SRNL collected thermal imagery, surface meteorology and water temperatures from helicopters and boats at the Comanche Peak and H. B. Robinson nuclear power plant cooling lakes. SRNL found that decreasing skewness correlated with increasing wind speed, as was the case for the laboratory experiments. Simple linear and orthogonal regression models both explained about 50% of the variance in the skewness - wind speed plots. A nonlinear (logistic) regression model produced a better fit to the data, apparently because the thermal convection and resulting skewness are related to wind speed in a highly nonlinear way in nearly calm and in windy conditions.

  3. Speed of sound in liquids at high pressure

    E-Print Network [OSTI]

    P., Kielczynski; S, Piekarski

    2013-01-01T23:59:59.000Z

    In this paper, a new general formula for the sound speed in adiabatic conditions ( S = const ) has been established. The sound speed depends on the mass density {\\rho} (p,T ) and the internal energy per unit mass E(p,T ), both expressed as functions of the pressure p and the temperature T . This formula has been compared with experimental data on the example of triolein over the pressure range up to 450 MPa. For experimental data, phenomenological approximate formulas have been proposed. Those formulas have two versions, depending on the 2 and 3 parameters. Both versions have been developed with the help of the new expression (Eq.8) for the sound speed. The explicit form of both approximate curves can be regarded as the result of purely phenomenological modeling. However, in this paper, these new analytical expressions have been obtained by applying the heuristic procedure described in Appendix.

  4. Constant power speed range extension of surface mounted PM motors

    DOE Patents [OSTI]

    Lawler, Jack Steward (Knoxville, TN); Bailey, John Milton (Knoxville, TN)

    2001-01-01T23:59:59.000Z

    A circuit and method for controlling a rotating machine (11) in the constant horsepower range above base speed uses an inverter (15) having SCR's (T1-T6) connected in series with the primary commutation switches (Q1-Q6) to control turn off of the primary commutation switches and to protect the primary commutation switches from faults. The primary commutation switches (Q1-Q6) are controlled by a controller (14), to fire in advance or after a time when the back emf equals the applied voltage, and then to turn off after a precise dwell time, such that suitable power is developed at speeds up to at least six times base speed.

  5. Systematic Controller Design Methodology for Variable-Speed Wind Turbines

    SciTech Connect (OSTI)

    Hand, M. M.; Balas, M. J.

    2002-02-01T23:59:59.000Z

    Variable-speed, horizontal axis wind turbines use blade-pitch control to meet specified objectives for three operational regions. This paper provides a guide for controller design for the constant power production regime. A simple, rigid, non-linear turbine model was used to systematically perform trade-off studies between two performance metrics. Minimization of both the deviation of the rotor speed from the desired speed and the motion of the actuator is desired. The robust nature of the proportional-integral-derivative controller is illustrated, and optimal operating conditions are determined. Because numerous simulation runs may be completed in a short time, the relationship between the two opposing metrics is easily visualized.

  6. Ultra-high-speed optical and electronic distributed devices

    SciTech Connect (OSTI)

    Hietala, V.M.; Plut, T.A.; Kravitz, S.H.; Vawter, G.A.; Wendt, J.R.; Armendariz, M.G.

    1995-08-01T23:59:59.000Z

    This report summarizes work on the development of ultra-high-speed semiconductor optical and electronic devices. High-speed operation is achieved by velocity matching the input stimulus to the output signal along the device`s length. Electronic devices such as field-effect transistors (FET`s), should experience significant speed increases by velocity matching the electrical input and output signals along the device. Likewise, optical devices, which are typically large, can obtain significant bandwidths by velocity matching the light being generated, detected or modulated with the electrical signal on the device`s electrodes. The devices discussed in this report utilize truly distributed electrical design based on slow-wave propagation to achieve velocity matching.

  7. Local non-Gaussianity from rapidly varying sound speeds

    SciTech Connect (OSTI)

    Emery, Jon; Tasinato, Gianmassimo; Wands, David, E-mail: jon.emery@port.ac.uk, E-mail: gianmassimo.tasinato@port.ac.uk, E-mail: david.wands@port.ac.uk [Institute of Cosmology and Gravitation, University of Portsmouth, Dennis Sciama Building, Portsmouth, PO1 3FX (United Kingdom)

    2012-08-01T23:59:59.000Z

    We study the effect of non-trivial sound speeds on local-type non-Gaussianity during multiple-field inflation. To this end, we consider a multiple-DBI model and use the ?N formalism to track the super-horizon evolution of perturbations. By adopting a sum separable Hubble parameter we derive analytic expressions for the relevant quantities in the two-field case, valid beyond slow variation. We find that non-trivial sound speeds can, in principle, curve the trajectory in such a way that significant local-type non-Gaussianity is produced. Deviations from slow variation, such as rapidly varying sound speeds, enhance this effect. To illustrate our results we consider two-field inflation in the tip regions of two warped throats and find large local-type non-Gaussianity produced towards the end of the inflationary process.

  8. Analysis of a teetered, variable-speed rotor: final report

    SciTech Connect (OSTI)

    Weber, T.L.; Wilson, R.E.; Walker, S.N. (Oregon State Univ., Corvallis, OR (USA). Dept. of Mechanical Engineering) [Oregon State Univ., Corvallis, OR (USA). Dept. of Mechanical Engineering

    1991-06-01T23:59:59.000Z

    A computer model of a horizontal axis wind turbine (HOOT) with four structural degrees of freedom has been derived and verified. The four degrees of freedom include flapwise motion of the blades, teeter motion, and variable rotor speed. Options for the variable rotor speed include synchronous, induction, and constant-tip speed generator models with either start, stop, or normal operations. Verification is made by comparison with analytical solutions and mean and cyclic ESI-80 data. The Veers full-field turbulence model is used as a wind input for a synchronous and induction generator test case during normal operation. As a result of the comparison, it is concluded that the computer model can be used to predict accurately mean and cyclic loads with a turbulent wind input. 47 refs., 19 figs.

  9. Speed-up of combustion fronts in shear flows

    E-Print Network [OSTI]

    Hamel, Francois

    2011-01-01T23:59:59.000Z

    This paper is concerned with the analysis of speed-up of reaction-diffusion-advection traveling fronts in infinite cylinders with periodic boundary conditions. The advection is a shear flow with a large amplitude and the reaction is nonnegative, with either positive or zero ignition temperature. The unique or minimal speeds of the traveling fronts are proved to be asymptotically linear in the flow amplitude as the latter goes to infinity, solving an open problem from \\cite{b}. The asymptotic growth rate is characterized explicitly as the unique or minimal speed of traveling fronts for a limiting degenerate problem, and the convergence of the regular traveling fronts to the degenerate ones is proved for positive ignition temperatures under an additional H{\\"{o}}rmander-type condition on the flow.

  10. Harmonic mean, the Gamma factor and Speed of Light

    E-Print Network [OSTI]

    Chandru Iyer

    2008-11-17T23:59:59.000Z

    The relationship between the harmonic mean and special relativity is concisely elucidated. The arguments in favor and against SRT are explored. It is shown that the ratio of the speed of light to the harmonic mean of the onward and return speeds of light in a moving frame under Newtonian mechanics, when equitably distributed between space and time as a correction, leads to the Lorentz transformation. This correction implies an apparent contraction of objects and time dilation. However, the symmetry of the onward and inverse transformations give a different meaning to the gamma factor

  11. Comparison of operating speeds at spiral transition and circular curves

    E-Print Network [OSTI]

    Passetti, Karl Andrew

    1998-01-01T23:59:59.000Z

    acceleration, fijs; and V = speed, mph In evaluating the models, it was found that the spiral length increases with increasing speed, but does not become unreasonably long. It was also found that the spiral length and spiral ang e epen o y on 1 d d nl... curves provide deceptive information to drivers is based on crash data for spiral curves, he does not present data for comparable circular curves In addition, the issue of whether the spiral curve is causing the crashes or whether crash rates...

  12. EFFECT OF PITCH CONTROL AND POWER CONDITIONING ON POWER QUALITY OF VARIABLE SPEED WIND TURBINE GENERATORS

    E-Print Network [OSTI]

    EFFECT OF PITCH CONTROL AND POWER CONDITIONING ON POWER QUALITY OF VARIABLE SPEED WIND TURBINE), Curtin University of Technology, WA Abstract: Variable speed wind turbine generators provide the opportunity to capture more power than fixed speed turbines. However the variable speed machine output can

  13. Environmental Assessment for Central Power and Light Company`s proposed Military Highway-CFE tie 138/69-kV transmission line project Brownsville, Cameron County, Texas

    SciTech Connect (OSTI)

    Not Available

    1992-04-01T23:59:59.000Z

    Central Power and Light Company (CPL) intends to upgrade its existing transmission line ties with the Commision Federal de Electricidad (CFE) system in Mexico. CPL currently has a single 69-kilovolt (kV) transmission line in the Brownsville area which connects CPL`s system with the system of CFE. This existing line runs between the Brownsville Switching Station, located on Laredo Road in Brownsville, Cameron County, Texas, and an existing CFE 69-kV line at the Rusteberg Bend of the Rio Grande in Cameron County. Under current conditions of need, the existing 69-kV line does not possess sufficient capability to engage in appropriate power exchanges. Therefore, CPL is proposing to build a new line to link up with CFE. This proposed line would be a double-circuit line, which would (1) continue (on a slightly relocated route) the existing 69-kV tie from CPL`s Brownsville Switching Station to CFE`s facilities, and (2) add a 138-kV tie from the Military Highway Substation, located on Military Highway (US Highway 281), to CFE`s facilities. The proposed 138/69-kV line, which will be constructed and operated by CPL, will be built primarily on steel single-pole structures within an average 60-foot (ft) wide right-of-way (ROW). It will be approximately 6900--9200 ft (1.3--1.7 miles) in length, depending on the alternative route constructed.

  14. Energy Implications of Retrofitting Retail Sector Rooftop Units with Stepped-Speed and Variable-Speed Functionality

    SciTech Connect (OSTI)

    Studer, D.; Romero, R.; Herrmann, L.; Benne, K.

    2012-04-01T23:59:59.000Z

    Commercial retailers understand that retrofitting constant-speed RTU fan motors with stepped- or variable-speed alternatives could save significant energy in most U.S. climate zones. However, they lack supporting data, both real-world and simulation based, on the cost effectiveness and climate zone-specific energy savings associated with this measure. Thus, building managers and engineers have been unable to present a compelling business case for fan motor upgrades to upper management. This study uses whole-building energy simulation to estimate the energy impact of this type of measure so retailers can determine its economic feasibility.

  15. Convergence Speed of GARCH Option Price to Diffusion Option Price

    E-Print Network [OSTI]

    Chaudhuri, Sanjay

    Convergence Speed of GARCH Option Price to Diffusion Option Price Jin-Chuan Duan, Yazhen Wang that as the time interval between two consecutive observations shrinks to zero, a properly constructed GARCH model will weakly converge to a bivariate diffusion. Naturally the European option price under the GARCH model

  16. Convergence Speed of GARCH Option Price to Diffusion Option Price

    E-Print Network [OSTI]

    Wang, Yazhen

    Convergence Speed of GARCH Option Price to Diffusion Option Price Jin-Chuan Duan National constructed GARCH model will weakly converge to a bi- variate diffusion. Naturally the European option price under the GARCH model will also converge to its bivariate diffusion counterpart. This paper investigates

  17. Speed and Energy Performance Asynchronous MIPS R3000 Microprocessor

    E-Print Network [OSTI]

    is at least four times as fast as a commercial MIPS R3000 in the same technology at its initial introductionSpeed and Energy Performance of an Asynchronous MIPS R3000 Microprocessor Alain J. Martin Mika Nystrom Paul Penzes Catherine Wong California Institute of Technology Pasadena, CA 91125 June 22, 2001

  18. Improving the Accuracy and Speed of Support Vector Machines

    E-Print Network [OSTI]

    Improving the Accuracy and Speed of Support Vector Machines Chris J.C. Burges Bell Laboratories bs@mpik-tueb.mpg.de Abstract Support Vector Learning Machines (SVM) are nding application in pattern to achieve a factor of fty speedup in test phase over the virtual support vector machine. The combined

  19. High Speed Rail in Greece : methods for evaluating economic impacts

    E-Print Network [OSTI]

    Radopoulou, Stefania Christina

    2010-01-01T23:59:59.000Z

    High Speed Rail is a mode that gains popularity every day. Many countries have such a network and others are on the way to adopting one. Greece, which is part of the European Union, is one of those countries that are looking ...

  20. Modeling of a rotor speed transient response with radial rubbing

    E-Print Network [OSTI]

    Boyer, Edmond

    by an accidental blade­off imbalance. In order to assess the angular deceleration of the rotor due to rubbingModeling of a rotor speed transient response with radial rubbing Sébastien Roques1 Institut deGill Univer- sity, 817 Sherbrooke St West, Montreal, Quebec H3A 2K6, Canada Abstract A rotor­stator model