Sample records for traffic flow adjustments

  1. Modeling Traffic Flow Emissions

    E-Print Network [OSTI]

    Cappiello, Alessandra

    2002-09-17T23:59:59.000Z

    The main topic of this thesis is the development of light-duty vehicle dynamic emission models and their integration with dynamic traffic models. Combined, these models

  2. Freeway Short-Term Traffic Flow Forecasting by Considering Traffic Volatility Dynamics and Missing Data Situations

    E-Print Network [OSTI]

    Zhang, Yanru

    2012-10-19T23:59:59.000Z

    , assuming constant variance when perform forecasting. This method does not consider the volatility nature of traffic flow data. This paper demonstrated that the variance part of traffic flow data is not constant, and dependency exists. A volatility model...

  3. Automated identification of terminal area air traffic flows and weather related deviations

    E-Print Network [OSTI]

    Ng, Tony M. Eng. Massachusetts Institute of Technology

    2008-01-01T23:59:59.000Z

    Air traffic in terminal air space is very complex, making it very difficult to identify air traffic flows. Finding air traffic flows and flow boundaries are very helpful in analyzing how air traffic would react to weather. ...

  4. Supporting Air Traffic Flow Management with Agents Shawn R. Wolfe

    E-Print Network [OSTI]

    Yorke-Smith, Neil

    Supporting Air Traffic Flow Management with Agents Shawn R. Wolfe Intelligent Systems Division NASA Ames Research Center Moffett Field, CA 94035-1000 Shawn.R.Wolfe@nasa.gov Abstract Air traffic flow an agent-based system to facilitate mutually beneficial air traffic management decisions, and identify

  5. Chaos control in traffic flow models

    E-Print Network [OSTI]

    Elman Mohammed Shahverdiev; Shin-ichi Tadaki

    1998-11-30T23:59:59.000Z

    Chaos control in some of the one- and two-dimensional traffic flow dynamical models in the mean field theory is studied.One dimensional model is investigated taking into account the effect of random delay. Two dimensional model takes into account the effects of overpasses, symmetric distribution of cars and blockages of cars moving in the same direction. Chaos synchronization is performed within both replica and nonreplica approaches, and using parameter perturbation method.

  6. A Kinematic Wave Traffic Flow Model for Mixed Traffic H. M. Zhang1

    E-Print Network [OSTI]

    Mease, Kenneth D.

    A Kinematic Wave Traffic Flow Model for Mixed Traffic H. M. Zhang1 Department of Civil-mail: wjin@ucdavis.edu ABSTRACT In this paper we extend the Lighthill-Whitham-Richards kinematic wave traffic kinematic wave model developed by Lighthill, Whitham (3) and Richards (4): t+(V())x=0, V( )Q(). (3

  7. adaptive traffic flow: Topics by E-print Network

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

    C; Sahni, Onkar; Shephard, Mark S; Jansen, Kenneth E 2014-01-01 143 The inhomogeneous kinematic wave traffic flow model as a resonant nonlinear system Engineering Websites...

  8. Accident Analysis and Prevention 36 (2004) 933946 Freeway safety as a function of traffic flow

    E-Print Network [OSTI]

    Detwiler, Russell

    2004-01-01T23:59:59.000Z

    Accident Analysis and Prevention 36 (2004) 933­946 Freeway safety as a function of traffic flow of strong relationships between traffic flow conditions and the likelihood of traffic accidents (crashes reserved. Keywords: Traffic safety; Accident rates; Traffic flow; Loop detectors; Speed; Traffic density

  9. Adjustable flow rate controller for polymer solutions

    DOE Patents [OSTI]

    Jackson, Kenneth M. (Bartlesville, OK)

    1981-01-01T23:59:59.000Z

    An adjustable device for controlling the flow rate of polymer solutions which results in only little shearing of the polymer molecules, said device comprising an inlet manifold, an outlet manifold, a plurality of tubes capable of providing communication between said inlet and outlet manifolds, said tubes each having an internal diameter that is smaller than that of the inlet manifold and large enough to insure that viscosity of the polymer solution passing through each said tube will not be reduced more than about 25 percent, and a valve associated with each tube, said valve being capable of opening or closing communication in that tube between the inlet and outlet manifolds, each said valve when fully open having a diameter that is substantially at least as great as that of the tube with which it is associated.

  10. Traffic flow wide-area surveillance system definition

    SciTech Connect (OSTI)

    Allgood, G.O.; Ferrell, R.K.; Kercel, S.W.; Abston, R.A.; Carnal, C.L. [Oak Ridge National Lab., TN (United States); Moynihan, P.I. [Jet Propulsion Lab., Pasadena, CA (United States)

    1994-11-01T23:59:59.000Z

    Traffic Flow Wide-Area Surveillance (TFWAS) is a system for assessing the state of traffic flow over a wide area for enhanced traffic control and improved traffic management and planning. The primary purpose of a TFWAS system is to provide a detailed traffic flow description and context description to sophisticated traffic management and control systems being developed or envisioned for the future. A successful TFWAS system must possess the attributes of safety, reconfigurability, reliability, and expandability. The primary safety premise of TFWAS is to ensure that no action or failure of the TFWAS system or its components can result in risk of injury to humans. A wide variety of communication techniques is available for use with TFWAS systems. These communication techniques can be broken down into two categories, landlines and wireless. Currently used and possible future traffic sensing technologies have been examined. Important criteria for selecting TFWAS sensors include sensor capabilities, costs, operational constraints, sensor compatibility with the infrastructure, and extent. TFWAS is a concept that can take advantage of the strengths of different traffic sensing technologies, can readily adapt to newly developed technologies, and can grow with the development of new traffic control strategies. By developing innovative algorithms that will take information from a variety of sensor types and develop descriptions of traffic flows over a wide area, a more comprehensive understanding of the traffic state can be provided to the control system to perform the most reasonable control actions over the entire wide area. The capability of characterizing the state of traffic over an entire region should revolutionize developments in traffic control strategies.

  11. Integration of an Aggregate Flow Model with a Traffic Flow Simulator

    E-Print Network [OSTI]

    Integration of an Aggregate Flow Model with a Traffic Flow Simulator Robert Hoffman , Dengfeng Sun restrictions to aircraft movement are applied by air traffic controllers and traffic managers in response to demand overages or capacity shortfalls in sectors of airspace. To estimate and assess the efficiency

  12. Post processing large integer programming problems in air traffic flow management

    E-Print Network [OSTI]

    Gangadharan, Rajesh

    1994-01-01T23:59:59.000Z

    The Federal Aviation Administration is keen to develop new strategies for air traffic control, in order to better tackle the numerous problems arising due to increasing traffic in the national air space. The Traffic Flow Management (TFM) problem...

  13. The inhomogeneous kinematic wave traffic flow model as a resonant nonlinear system

    E-Print Network [OSTI]

    Mease, Kenneth D.

    The inhomogeneous kinematic wave traffic flow model as a resonant nonlinear system December, 2000 W 95616 Abstract The kinematic wave traffic flow model for an inhomogeneous road is studied as a resonant conform to expectations. Introduction The kinematic wave traffic flow model of LWR was introduced

  14. Dynamic programming applied to maximizing traffic flow in parallel systems

    E-Print Network [OSTI]

    Anderson, Gerald Lee

    1967-01-01T23:59:59.000Z

    Solution of the problem The Triple-Route Model 33 CHAPTER I INTRODUCTION The control of traffic flow and congestion in freeway systems is a matter of increasing importance at a time when it. has become evident that it is impossible to construct... enough urban highway- to satisfy all of the traffic demand. It is necessary to seek ways to make more efficient u. e of existing freeways. Nattleworth (1, 2) and others (3, 4, 5, 6) have discussed various aspects of the control of freeway systems...

  15. Continuous kinematic wave models of merging traffic flow

    E-Print Network [OSTI]

    Wen-Long Jin

    2010-04-13T23:59:59.000Z

    Merging junctions are important network bottlenecks, and a better understanding of merging traffic dynamics has both theoretical and practical implications. In this paper, we present continuous kinematic wave models of merging traffic flow which are consistent with discrete Cell Transmission Models with various distribution schemes. In particular, we develop a systematic approach to constructing kinematic wave solutions to the Riemann problem of merging traffic flow in supply-demand space. In the new framework, Riemann solutions on a link consist of an interior state and a stationary state, subject to admissible conditions such that there are no positive and negative kinematic waves on the upstream and downstream links respectively. In addition, various distribution schemes in Cell Transmission Models are considered entropy conditions. In the proposed analytical framework, we prove that the stationary states and boundary fluxes exist and are unique for the Riemann problem for both fair and constant distribution schemes. We also discuss two types of invariant merge models, in which local and discrete boundary fluxes are the same as global and continuous ones. With numerical examples, we demonstrate the validity of the analytical solutions of interior states, stationary states, and corresponding kinematic waves. Discussions and future studies are presented in the conclusion section.

  16. Self-learning IP Traffic Classification based on Statistical Flow Characteristics

    E-Print Network [OSTI]

    Zander, Sebastian

    and intrusion detection. The most common identification technique based on the inspection of `known port numbers or encrypted traffic. The authors of [1] propose signature-based methods to classify P2P traffic. AlthoughSelf-learning IP Traffic Classification based on Statistical Flow Characteristics Sebastian Zander1

  17. Automation cueing modulates cerebral blood flow and vigilance in a simulated air traffic control task

    E-Print Network [OSTI]

    Parasuraman, Raja

    Automation cueing modulates cerebral blood flow and vigilance in a simulated air traffic control: Automation; vigilance; cerebral blood flow; mental workload; attentional resources. Automation cueing operator, depending on automation reliability. To assess these effects, transcranial Doppler sonography

  18. A non-continuum approach to obtain a macroscopic model for the flow of traffic 

    E-Print Network [OSTI]

    Tyagi, Vipin

    2007-09-17T23:59:59.000Z

    by continuum models for the flow of traffic. The number of vehicles in a typical section of a freeway does not justify traffic being treated as a continuum. It is also important to recognize that the basic premises of kinetic theory are not appropriate...

  19. A non-continuum approach to obtain a macroscopic model for the flow of traffic

    E-Print Network [OSTI]

    Tyagi, Vipin

    2007-09-17T23:59:59.000Z

    by continuum models for the flow of traffic. The number of vehicles in a typical section of a freeway does not justify traffic being treated as a continuum. It is also important to recognize that the basic premises of kinetic theory are not appropriate...

  20. Intelligent Cruise Control design based on a traffic flow specification

    E-Print Network [OSTI]

    Huandra, Rusli

    1998-01-01T23:59:59.000Z

    The principal objectives of the Automated Highway graphics. System (AHS), an Intelligent Transportation System (ITS) technology, are to increase the safety and through-put of the existing highway by traffic automation. Advanced Vehicle Control...

  1. Intelligent Cruise Control design based on a traffic flow specification 

    E-Print Network [OSTI]

    Huandra, Rusli

    1998-01-01T23:59:59.000Z

    The principal objectives of the Automated Highway graphics. System (AHS), an Intelligent Transportation System (ITS) technology, are to increase the safety and through-put of the existing highway by traffic automation. Advanced Vehicle Control...

  2. Visualization of Traffic Flow and Atmospheric Pollutant Flow in Urban Areas

    E-Print Network [OSTI]

    Tokyo, University of

    and air pollutants using polygons and translucent particles. The system is applied for public roads around.transport.iis.u-tokyo.ac.jp CCity modelity model Air pollutionAir pollution simsim.. TrafficTraffic simsim.. CCity modelity model Air pollutionAir pollution simsim.. TrafficTraffic simsim.. #12;

  3. Self-sustained nonlinear waves in traffic flow M. R. Flynn,1

    E-Print Network [OSTI]

    Flynn, Morris R.

    by considering examples of traffic flow on open and closed roadways. DOI: 10.1103/PhysRevE.79.056113 PACS number-Whitham model on ei- ther an infinite roadway or, as with the recent physical ex- periment conducted by Sugiyama

  4. Adjusting flow station job to remote Nigerian location yields savings

    SciTech Connect (OSTI)

    Wooten, R.; Williams, E.C. (OPI International Inc., Houston, TX (United States))

    1994-05-02T23:59:59.000Z

    In September 1991, Chevron Nigeria Ltd. and Nigerian National Petroleum Crop. contracted Offshore Pipelines to design, procure, construct, install, and commission the Opuekeba 30,000 b/d crude-oil flow station on an offshore platform near Olero Creek, Nigeria, approximately 22 miles from the nearest deepwater access. Chevron's original project plan included bringing the flow station to the site in small packages and then assembling it in a lengthy field hook-up process. Offshore Pipelines developed a plan early in the project to maximize construction and hook-up in the fabrication yard, then transport the nearly complete structures to site by way of a newly dredged canal. What proved to be most difficult was the site location in Nigeria. Job planning and communication were important in the successful completion of the project. Keeping the components of the large and complex facility simple proved to be effective and efficient and played a key role in completing the project on time and within budget. The paper discusses overcoming obstacles, lift and depth constraints, dredging, fabrication, installation, and large-time problems.

  5. Online Optimal Control of Connected Vehicles for Efficient Traffic Flow at Merging Roads

    SciTech Connect (OSTI)

    Rios-Torres, Jackeline [ORNL; Malikopoulos, Andreas [ORNL; Pisu, Pierluigi [Clemson University

    2015-01-01T23:59:59.000Z

    This paper addresses the problem of coordinating online connected vehicles at merging roads to achieve a smooth traffic flow without stop-and-go driving. We present a framework and a closed-form solution that optimize the acceleration profile of each vehicle in terms of fuel economy while avoiding collision with other vehicles at the merging zone. The proposed solution is validated through simulation and it is shown that coordination of connected vehicles can reduce significantly fuel consumption and travel time at merging roads.

  6. Flow adjustment and interior flow associated with a rectangular porous obstruction

    E-Print Network [OSTI]

    Rominger, Jeffrey Tsaros

    The flow at the leading edge and in the interior of a rectangular porous obstruction is described through experiments and scaling. The porous obstruction consists of an emergent, rectangular array of cylinders in shallow ...

  7. A Model and Case Study of the Impacts of Stochastic Capacity on Freeway Traffic Flow Benefits and Costs

    E-Print Network [OSTI]

    Bertini, Robert L.

    and Costs Alexander Bigazzi1 and Dr. Miguel Figliozzi2 1 Department of Civil and Environmental Engineering conditions with the accompanying heavy congestion costs. As the traffic volume at which flow breaks down is uncertain, this research utilizes a stochastic capacity model to estimate congestion costs in terms

  8. An Empirical Investigation of the Impacts of Sun-Related Glare on Traffic Flow Paper 08-0773

    E-Print Network [OSTI]

    Bertini, Robert L.

    An Empirical Investigation of the Impacts of Sun-Related Glare on Traffic Flow Paper 08 error, or in the worst case to an incident or a crash. Glare can be caused by sun, headlights of other at night, is often addressed with median barriers or glare screens. However, the effect of sun

  9. Queueing in Traffic Flows This project studies the effects of vehicle routing on pollution levels. We aim to develop queueing theory

    E-Print Network [OSTI]

    Boucherie, Richard J.

    model to predict air pollution in a wider region. These predictions will be tested using remote sensing forecast can then predict how air pollution is affected by this emission. Rerouting Alternative routing can reduce traffic jams and air pollution. Numereous options are available to reroute traffic flows, e

  10. A FLEXIBLE MODEL FOR TRAFFIC SIMULATION AND

    E-Print Network [OSTI]

    Sanner, Scott

    accurate prediction of macroscopic traffic flows (in con- sistent with kinematic wave theory) under all

  11. Using DTMon to Monitor Transient Flow Traffic Hadi Arbabi and Michele C. Weigle

    E-Print Network [OSTI]

    Weigle, Michele

    call task organizers (TOs) and vehicles equipped with communications devices. TOs use Dedicated Short and changed dynamically by the TOs according to the traffic conditions. In this paper, we evaluate

  12. Impact of Traffic States on Freeway Collision Frequency

    E-Print Network [OSTI]

    Yeo, Hwasoo; Jang, Kitae; Skabardonis, Alexander

    2010-01-01T23:59:59.000Z

    interurban motorways, Accident Analysis and Prevention, 34,of traffic flow, Accident Analysis and Prevention, 36, 2004,hourly traffic flow-I: Accident Analysis and Prevention, 14,

  13. Flow of autonomous traffic on a single multi-lane street

    E-Print Network [OSTI]

    Polito, Federico

    2007-01-01T23:59:59.000Z

    We investigate the behaviour of an original traffic model. The model considers a single multi-lane street, populated by autonomous vehicles directed from either end to the other. Lanes have no intrinsic directionality, and the vehicles are inserted at random at either end and any lane. Collision avoidance is fully automatic and, to enhance the transport capacity of the street, vehicles form_trains_ in which they may travel at high speed quite close to the vehicle in front. We report on the transit times for vehicles under a wide variety of conditions: vehicle insertion probability & imbalance and their maximum speed distribution. We also outline an interesting feature of the model, that the complex interactions of many vehicles are considerably more powerful than a simple "keep left" directive which each vehicle should obey.

  14. Composition and Flow Behavior of F-Canyon Tank 804 Sludge following Manganese Addition and pH Adjustment

    SciTech Connect (OSTI)

    Poirier, M. R.; Stallings, M. E.; Burket, P.R.; Fink, S. D.

    2005-11-30T23:59:59.000Z

    The Site Deactivation and Decommissioning (SDD) Organization is evaluating options to disposition the 800 underground tanks (including removal of the sludge heels from these tanks). To support this effort, SDD requested assistance from Savannah River National Laboratory (SRNL) personnel to examine the composition and flow characteristics of the Tank 804 sludge slurry after diluting it 10:1 with water, adding manganese nitrate to produce a slurry containing 5.5 wt % manganese (40:1 ratio of Mn:Pu), and adding sufficient 8 M caustic to raise the pH to 7, 10, and 14. Researchers prepared slurries containing one part Tank 804 sludge and 10 parts water. The water contained 5.5 wt % manganese (which SDD will add to poison the plutonium in Tank 804) and was pH adjusted to 3, 7, 10, or 14. They hand mixed (i.e., shook) these slurries and allowed them to sit overnight. With the pH 3, 7, and 10 slurries, much of the sludge remained stuck to the container wall. With the pH 14 slurry, most of the sludge appeared to be suspended in the slurry. They collected samples from the top and bottom of each container, which were analyzed for plutonium, manganese, and organic constituents. Following sampling, they placed the remaining material into a viscometer and measured the relationship between applied shear stress and shear rate. The pH 14 slurry was placed in a spiral ''race track'' apparatus and allowed to gravity drain.

  15. Towards practical implementation of computational solution of the Kinematic -wave Model for simulating traffic-flow scenarios

    E-Print Network [OSTI]

    Kumar, Nishant

    2004-11-15T23:59:59.000Z

    The Kinematic-wave model is one of the models proposed to simulate vehicular traffic. It has not received widespread use because of poor understanding of associated interface conditions and early use of incorrect numerical schemes used. This thesis...

  16. The use of a simple cellular automata model as a testbed for kinetic theories of vehicular traffic flow

    E-Print Network [OSTI]

    Raney, Bryan Keith

    2000-01-01T23:59:59.000Z

    The broad objective of this thesis is to explore the potential for the use of Cellular Automata (CA) models to provide a testbed for comparison of different kinetic models of vehicular traffic. We intend to develop a quantitative technique...

  17. Variability in continuous traffic monitoring data

    SciTech Connect (OSTI)

    Wright, T.; Hu, P.S. [Oak Ridge National Lab., TN (United States); Young, J. [Tennessee Univ., Knoxville, TN (United States)

    1996-07-01T23:59:59.000Z

    Each state in the United States can be viewed as a universe of road segments. For each road segment in each state, it is desired to know various traffic characteristics based on count data, classification count data, and weigh-in-motion data. These data are absolutely essential for highway design, maintenance, safety, and planning. Given no cost constraints, each road segment would be continuously monitored every day of the year. However, in practice, a few road segments are monitored continuously every day of the year to produce annual characteristics of traffic flow. The remaining road segments are monitored for one or two days each year, and this resulting data are `adjusted` (using factors based on data collected from the continuously monitored road segments) to produce estimates of annual characteristics. With this general approach, each state strives to provide estimates of annual characteristics for each road segment within its jurisdiction. In 1985, the Federal Highway Administration (FHWA) published the Traffic Monitoring Guide to assist states in achieving this end. As with almost any data collection effort, the monitoring data suffers from errors from many sources. In this paper, we report some empirical findings in a research project sponsored by the FHWA. This research project studied the variability in the traffic data from the continuously monitored road segments from state(s) and, the extent to which this variability is transferred to and affects the precision of the data produced from the road segments which are monitored only one or two days each year. The ultimate hope is that states will eventually be able to not only publish an estimate of a characteristic such as Average Annual Daily Traffic (AADT) for each road segment, but also that each estimate will be accompanied by a statement expressing how good the estimate is in terms of its estimated variability or precision, which will likely be expressed as a coefficient of variation.

  18. Multi-lane hybrid traffic flow model: a theory on the impacts of lane-changing maneuvers

    E-Print Network [OSTI]

    Daganzo, Carlos F.

    is parsimonious; it requires only one more parameter than the simple kinematic wave model. The extra parameter flow models do not address lane-changing phenomena properly. Extensions to kinematic wave (KW) theory

  19. HPSS Yearly Network Traffic

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

    growth in network traffic to storage over the years. Network Traffic Growth Network Distribution 2010 Network Distribution 2010 Network Distribution 2009 Network Distribution...

  20. Budget Adjustment Single Sided Budget Adjustment

    E-Print Network [OSTI]

    Stephens, Graeme L.

    Budget Adjustment & Single Sided Budget Adjustment WELCOME! #12;Accessing Kuali · Campus://busfin.colostate.edu #12;What will be covered today? · When should I use a Budget Adjustment (BA) or Single Sided Budget · Error correction · Onesided vs. singlesided entries #12;When to use a Budget Adjustment · How do I know

  1. Statistical traffic classification by Boosting Support Vector Machines

    E-Print Network [OSTI]

    Statistical traffic classification by Boosting Support Vector Machines Gabriel Gómez Sena Facultad years, traffic classification based on the statistical properties of flows has become an important topic. In this paper we statistically analyze the data length of the first few segments exchanged by a transport flow

  2. Fermilab | Traffic Safety at Fermilab |

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

    Submit a SuggestionQuestion Fermilab traffic rules (FESHM 9010) Fermilab traffic accident statistics Traffic safety awareness training Resources Texting While Driving...

  3. Streamlining Transportation Corridor Planning Processess: Freight and Traffic Information

    SciTech Connect (OSTI)

    Franzese, Oscar [ORNL

    2010-08-01T23:59:59.000Z

    The traffic investigation is one of the most important parts of an Environmental Impact Statement of projects involving the construction of new roadway facilities and/or the improvement of existing ones. The focus of the traffic analysis is on the determination of anticipated traffic flow characteristics of the proposed project, by the application of analytical methods that can be grouped under the umbrella of capacity analysis methodologies. In general, the main traffic parameter used in EISs to describe the quality of traffic flow is the Level of Service (LOS). The current state of the practice in terms of the traffic investigations for EISs has two main shortcomings. The first one is related to the information that is necessary to conduct the traffic analysis, and specifically to the lack of integration among the different transportation models and the sources of information that, in general, reside in GIS databases. A discussion of the benefits of integrating CRS&SI technologies and the transportation models used in the EIS traffic investigation is included. The second shortcoming is in the presentation of the results, both in terms of the appearance and formatting, as well as content. The presentation of traffic results (current and proposed) is discussed. This chapter also addresses the need of additional data, in terms of content and coverage. Regarding the former, other traffic parameters (e.g., delays) that are more meaningful to non-transportation experts than LOS, as well as additional information (e.g., freight flows) that can impact traffic conditions and safety are discussed. Spatial information technologies can decrease the negative effects of, and even eliminate, these shortcomings by making the relevant information that is input to the models more complete and readily available, and by providing the means to communicate the results in a more clear and efficient manner. The benefits that the application and use of CRS&SI technologies can provide to improve and expedite the traffic investigation part of the EIS process are presented.

  4. Traffic congestion forecasting model for the INFORM System. Final report

    SciTech Connect (OSTI)

    Azarm, A.; Mughabghab, S.; Stock, D.

    1995-05-01T23:59:59.000Z

    This report describes a computerized traffic forecasting model, developed by Brookhaven National Laboratory (BNL) for a portion of the Long Island INFORM Traffic Corridor. The model has gone through a testing phase, and currently is able to make accurate traffic predictions up to one hour forward in time. The model will eventually take on-line traffic data from the INFORM system roadway sensors and make projections as to future traffic patterns, thus allowing operators at the New York State Department of Transportation (D.O.T.) INFORM Traffic Management Center to more optimally manage traffic. It can also form the basis of a travel information system. The BNL computer model developed for this project is called ATOP for Advanced Traffic Occupancy Prediction. The various modules of the ATOP computer code are currently written in Fortran and run on PC computers (pentium machine) faster than real time for the section of the INFORM corridor under study. The following summarizes the various routines currently contained in the ATOP code: Statistical forecasting of traffic flow and occupancy using historical data for similar days and time (long term knowledge), and the recent information from the past hour (short term knowledge). Estimation of the empirical relationships between traffic flow and occupancy using long and short term information. Mechanistic interpolation using macroscopic traffic models and based on the traffic flow and occupancy forecasted (item-1), and the empirical relationships (item-2) for the specific highway configuration at the time of simulation (construction, lane closure, etc.). Statistical routine for detection and classification of anomalies and their impact on the highway capacity which are fed back to previous items.

  5. E-Print Network 3.0 - air traffic management Sample Search Results

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

    Sridhar and Kapil... of the problems in Traffic Flow ... Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and Utilization 2 Table of...

  6. Using Map Matching for an Online Traffic Congestion Application 

    E-Print Network [OSTI]

    Day, Madeleine

    2010-11-24T23:59:59.000Z

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

  7. Governance of Adjustments

    E-Print Network [OSTI]

    Wernerfelt, Birger

    2003-03-14T23:59:59.000Z

    The article proposes a research program to compare game forms in terms of their ability to govern ex post adjustments to ex ante contracts. The comparisons can be ...

  8. Hybrid Traffic Data Collection Roadmap: Pilot Procurement of Third-Party Traffic Data

    E-Print Network [OSTI]

    Alexandre, Bayen

    2013-01-01T23:59:59.000Z

    Traffic Management Systems PROBE DATA QUALITY VISUALIZATIONin Traffic Management Systems EXTEND PROBE DATA QUALITYquality, accuracy, and availability of traffic data Traffic system management

  9. Multimedia Traffic Routing in Multilayer WDM Networks

    E-Print Network [OSTI]

    Amphawan, Angela; Hasan, Hassanuddin

    2012-01-01T23:59:59.000Z

    The advent of real-time multimedia services over the Internet has stimulated new technologies for expanding the information carrying capacity of optical network backbones. Multilayer wavelength division multiplexing (WDM) packet switching is an emerging technology for increasing the bandwidth of optical networks. Two algorithms for the routing of the multimedia traffic flows were applied: (i) Capacitated Shortest Path First (CSPF) routing, which minimizes the distance of each flow linking the given source and destination nodes and satisfying capacity constraints; and (ii) Flow Deviation Algorithm (FDA) routing, which minimizes the network?wide average packet delay.

  10. Purchased Gas Adjustment Rules (Tennessee)

    Broader source: Energy.gov [DOE]

    The Purchased Gas Adjustment Rules are implemented by the Tennessee Regulatory Authority (Authority). Purchased Gas Adjustment (PGA) Rules are intended to permit the company/LDC (local gas...

  11. FPGA Based Real-time Network Traffic Analysis using Traffic Dispersion Patterns

    SciTech Connect (OSTI)

    Khan, F; Gokhale, M; Chuah, C N

    2010-03-26T23:59:59.000Z

    The problem of Network Traffic Classification (NTC) has attracted significant amount of interest in the research community, offering a wide range of solutions at various levels. The core challenge is in addressing high amounts of traffic diversity found in today's networks. The problem becomes more challenging if a quick detection is required as in the case of identifying malicious network behavior or new applications like peer-to-peer traffic that have potential to quickly throttle the network bandwidth or cause significant damage. Recently, Traffic Dispersion Graphs (TDGs) have been introduced as a viable candidate for NTC. The TDGs work by forming a network wide communication graphs that embed characteristic patterns of underlying network applications. However, these patterns need to be quickly evaluated for mounting real-time response against them. This paper addresses these concerns and presents a novel solution for real-time analysis of Traffic Dispersion Metrics (TDMs) in the TDGs. We evaluate the dispersion metrics of interest and present a dedicated solution on an FPGA for their analysis. We also present analytical measures and empirically evaluate operating effectiveness of our design. The mapped design on Virtex-5 device can process 7.4 million packets/second for a TDG comprising of 10k flows at very high accuracies of over 96%.

  12. LUNAR SOIL SIMULATION TRAFFICABILITY PARAMETERS

    E-Print Network [OSTI]

    Rathbun, Julie A.

    LUNAR SOIL SIMULATION and TRAFFICABILITY PARAMETERS by W. David Carrier, III Lunar Geotechnical.0 RECOMMENDED LUNAR SOIL TRAFFICABILITY PARAMETERS Table 9.14 in the Lunar Sourcebook (Carrier et al. 1991, p. 529) lists the current recommended lunar soil trafficability parameters: bc = 0.017 N/cm2 bN = 35° K

  13. Efficient Mining of the Multidimensional Traffic Cluster Hierarchy for Digesting, Visualization, and Anomaly Identification*

    E-Print Network [OSTI]

    Yener, Aylin

    1 Efficient Mining of the Multidimensional Traffic Cluster Hierarchy for Digesting, Visualization) 865-7065 Abstract Mining traffic traces to identify the dominant flows sent over a given link, over, and visualization of unexpected phenomena. Recently, Estan et al. advanced a comprehensive data mining structure

  14. INSTITUT NATIONAL DE RECHERCHE EN INFORMATIQUE ET EN AUTOMATIQUE WDM Mesh Networks with Dynamic Traffic

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    the demands and the required wavelengths in all time. Key-words: WDM, dynamic traffic, linear programming. It considers the problem of routing working traffic and assigning wavelengths in an all-optical network avoiding if possible that wavelengths assignment changes and flow rerouting. The model allows to know when

  15. EXPERIMENTAL VERIFICATION OF TIME-DEPENDENT ACCUMULATION PREDICTIONS IN CONGESTED TRAFFIC

    E-Print Network [OSTI]

    Smilowitz, Karen

    with a streamlined version of the kinematic wave theory that does not rely on ambiguous traffic stream, it is fair to ask whether these complexities prevent a theory of waves (such as the kinematic wave (KW traffic at random but predictable speeds, i.e., as waves (see e.g. [1-5]), plots of flow-density data have

  16. An Empirical Approach to Modeling Inter-AS Traffic Matrices Hyunseok Chang Sugih Jamin

    E-Print Network [OSTI]

    Mao, Zhuoqing Morley

    . These techniques rely on link measure- ments, flow measurements, or routing-related data to infer traffic demand data needed (e.g., ingress-egress demand) and data most readily available (e.g., link measurements for modeling inter-AS traffic demand that relies exclusively on publicly available/obtainable mea- surements

  17. The dynamic classification and identification of network applications responsible for network traffic

    E-Print Network [OSTI]

    Zander, Sebastian

    -taps based on statistical summaries of traffic details) Intrusion detection (detect suspicious activities Dynamic access control (adaptive firewalls that can detect forbidden applications, Denial of Service (Do for network traffic flows offers substantial benefits to a number of key areas in IP network engineering

  18. Automatic temperature adjustment apparatus

    DOE Patents [OSTI]

    Chaplin, James E. (66 Overlook Rd., Bloomingdale, NJ 07403)

    1985-01-01T23:59:59.000Z

    An apparatus for increasing the efficiency of a conventional central space heating system is disclosed. The temperature of a fluid heating medium is adjusted based on a measurement of the external temperature, and a system parameter. The system parameter is periodically modified based on a closed loop process that monitors the operation of the heating system. This closed loop process provides a heating medium temperature value that is very near the optimum for energy efficiency.

  19. Precision adjustable stage

    DOE Patents [OSTI]

    Cutburth, Ronald W. (Tracy, CA); Silva, Leonard L. (Livermore, CA)

    1988-01-01T23:59:59.000Z

    An improved mounting stage of the type used for the detection of laser beams is disclosed. A stage center block is mounted on each of two opposite sides by a pair of spaced ball bearing tracks which provide stability as well as simplicity. The use of the spaced ball bearing pairs in conjunction with an adjustment screw which also provides support eliminates extraneous stabilization components and permits maximization of the area of the center block laser transmission hole.

  20. EECBG Success Story: Getting Traffic Lights Talking to Improve...

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

    Traffic Lights Talking to Improve Topeka's Traffic Tunnel EECBG Success Story: Getting Traffic Lights Talking to Improve Topeka's Traffic Tunnel October 8, 2010 - 11:16am Addthis...

  1. Traffic Dynamic Instability

    E-Print Network [OSTI]

    Louis Reese; Anna Melbinger; Erwin Frey

    2015-05-05T23:59:59.000Z

    Here we study a driven lattice gas model for microtubule depolymerizing molecular motors, where traffic jams of motors induce stochastic switching between microtubule growth and shrinkage. We term this phenomenon \\enquote{traffic dynamic instability} because it is reminiscent of microtubule dynamic instability [T. Mitchison and M. Kirschner, Nature 312, 237 (1984)]. The intermittent dynamics of growth and shrinking emerges from the interplay between the arrival of motors at the microtubule tip, motor induced depolymerization, and motor detachment from the tip. The switching dynamics correlates with low and high motor density on the lattice. This leads to an effectively bistable particle density in the system. A refined domain wall theory predicts this transient appearance of different phases in the system. The theoretical results are supported by stochastic simulations.

  2. Traffic Dynamic Instability

    E-Print Network [OSTI]

    Reese, Louis; Frey, Erwin

    2015-01-01T23:59:59.000Z

    Here we study a driven lattice gas model for microtubule depolymerizing molecular motors, where traffic jams of motors induce stochastic switching between microtubule growth and shrinkage. We term this phenomenon \\enquote{traffic dynamic instability} because it is reminiscent of microtubule dynamic instability [T. Mitchison and M. Kirschner, Nature 312, 237 (1984)]. The intermittent dynamics of growth and shrinking emerges from the interplay between the arrival of motors at the microtubule tip, motor induced depolymerization, and motor detachment from the tip. The switching dynamics correlates with low and high motor density on the lattice. This leads to an effectively bistable particle density in the system. A refined domain wall theory predicts this transient appearance of different phases in the system. The theoretical results are supported by stochastic simulations.

  3. Adjustable shear stress erosion and transport flume

    DOE Patents [OSTI]

    Roberts, Jesse D. (Carlsbad, NM); Jepsen, Richard A. (Carlsbad, NM)

    2002-01-01T23:59:59.000Z

    A method and apparatus for measuring the total erosion rate and downstream transport of suspended and bedload sediments using an adjustable shear stress erosion and transport (ASSET) flume with a variable-depth sediment core sample. Water is forced past a variable-depth sediment core sample in a closed channel, eroding sediments, and introducing suspended and bedload sediments into the flow stream. The core sample is continuously pushed into the flow stream, while keeping the surface level with the bottom of the channel. Eroded bedload sediments are transported downstream and then gravitationally separated from the flow stream into one or more quiescent traps. The captured bedload sediments (particles and aggregates) are weighed and compared to the total mass of sediment eroded, and also to the concentration of sediments suspended in the flow stream.

  4. A microcomputer based traffic evacuation modeling system for emergency planning application

    SciTech Connect (OSTI)

    Rathi, A.K.

    1994-12-01T23:59:59.000Z

    Vehicular evacuation is one of the major and often preferred protective action options available for emergency management in a real or anticipated disaster. Computer simulation models of evacuation traffic flow are used to estimate the time required for the affected populations to evacuate to safer areas, to evaluate effectiveness of vehicular evacuations as a protective action option. and to develop comprehensive evacuation plans when required. Following a review of the past efforts to simulate traffic flow during emergency evacuations, an overview of the key features in Version 2.0 of the Oak Ridge Evacuation Modeling System (OREMS) are presented in this paper. OREMS is a microcomputer-based model developed to simulate traffic flow during regional emergency evacuations. OREMS integrates a state-of-the-art dynamic traffic flow and simulation model with advanced data editing and output display programs operating under a MS-Windows environment.

  5. Optimization of airport terminal-area air traffic operations under uncertain weather conditions

    E-Print Network [OSTI]

    Pfeil, Diana Michalek

    2011-01-01T23:59:59.000Z

    Convective weather is responsible for large delays and widespread disruptions in the U.S. National Airspace System, especially during summer. Although Air Traffic Flow Management algorithms exist to schedule and route ...

  6. Wireless sensor networks for measuring traffic

    E-Print Network [OSTI]

    Varaiya, Pravin

    Wireless sensor networks for measuring traffic University of California, Berkeley Sing Yiu Cheung, Sinem Coleri, and Pravin Varaiya 2 Outline · Traffic measurement · Wireless Sensor Networks · Vehicle wireless sensor networks compete? 7 Outline · Traffic measurement · Wireless Sensor Networks · Vehicle

  7. Artificial Immune System based urban traffic control

    E-Print Network [OSTI]

    Negi, Pallav

    2007-09-17T23:59:59.000Z

    traffic. The traffic was micro-simulated with each car on a two junction road system modeled individually. The cars themselves were programmed with 'personalities' to better simulate real traffic. A novel AIS was developed to detect, predict, and control...

  8. Traffic Safety Facts 2004

    National Nuclear Security Administration (NNSA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilAElectronic Input Options Gary L. Hirsch SNLMay 20102 HourtoTransportation TRAFFIC

  9. An analysis of peak traffic demand at signalized urban intersections

    E-Print Network [OSTI]

    Drew, Donald R

    1961-01-01T23:59:59.000Z

    (3 LANES) 350 705 7:15 725 7:35 7:45 7:55 805 TIME INTERVAL TYPICAL PEAK HOUR 5 MIN. TRAFFIC FLOWS 3 ? LANE FREEWAY 100 90 80 UI Z 3 70 0 PEAK RATES OF FLOW FORT WORTH UNIFORM ARRIVALS 0 ~ o170 EQUIVALENT RATE OF FLOW 60 50 O... {Figure 3), it is seen thai from 7:10 A. M. to 7:45 A. Lvf . the average hourly rate of flow is exceeded. If the mid-points of the five-minute ordinates are connected, a polygon is formed which:ntersects the PHV at the extremities of the peak period...

  10. Traffic information computing platform for big data

    SciTech Connect (OSTI)

    Duan, Zongtao, E-mail: ztduan@chd.edu.cn; Li, Ying, E-mail: ztduan@chd.edu.cn; Zheng, Xibin, E-mail: ztduan@chd.edu.cn; Liu, Yan, E-mail: ztduan@chd.edu.cn; Dai, Jiting, E-mail: ztduan@chd.edu.cn; Kang, Jun, E-mail: ztduan@chd.edu.cn [Chang'an University School of Information Engineering, Xi'an, China and Shaanxi Engineering and Technical Research Center for Road and Traffic Detection, Xi'an (China)

    2014-10-06T23:59:59.000Z

    Big data environment create data conditions for improving the quality of traffic information service. The target of this article is to construct a traffic information computing platform for big data environment. Through in-depth analysis the connotation and technology characteristics of big data and traffic information service, a distributed traffic atomic information computing platform architecture is proposed. Under the big data environment, this type of traffic atomic information computing architecture helps to guarantee the traffic safety and efficient operation, more intelligent and personalized traffic information service can be used for the traffic information users.

  11. Experiment on ATM traffic analysis

    E-Print Network [OSTI]

    Liang, Chai

    1997-01-01T23:59:59.000Z

    efficiently utilizing the underlying network resources, one must have some proper methods to analyze the performance of the ATM network. In this thesis, we studied the traffic characteristics in the ATM networks and the traffic modeling. To do this, we used...

  12. Modeling and Detection of Content and Packet Flow Anomalies at Enterprise Network Gateway

    E-Print Network [OSTI]

    Lin, Sheng-Ya

    2013-02-12T23:59:59.000Z

    This dissertation investigates modeling techniques and computing algorithms for detection of anomalous contents and traffic flows of ingress Internet traffic at an enterprise network gateway. Anomalous contents refer to a large volume of ingress...

  13. Scalability of dynamic traffic assignment

    E-Print Network [OSTI]

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

    2009-01-01T23:59:59.000Z

    This research develops a systematic approach to analyze the computational performance of Dynamic Traffic Assignment (DTA) models and provides solution techniques to improve their scalability for on-line applications for ...

  14. Suppressing traffic-driven epidemic spreading by edge-removal strategies

    E-Print Network [OSTI]

    Yang, Han-Xin; Wang, Bing-Hong

    2015-01-01T23:59:59.000Z

    The interplay between traffic dynamics and epidemic spreading on complex networks has received increasing attention in recent years. However, the control of traffic-driven epidemic spreading remains to be a challenging problem. In this Brief Report, we propose a method to suppress traffic-driven epidemic outbreak by properly removing some edges in a network. We find that the epidemic threshold can be enhanced by the targeted cutting of links among large-degree nodes or edges with the largest algorithmic betweeness. In contrast, the epidemic threshold will be reduced by the random edge removal. These findings are robust with respect to traffic-flow conditions, network structures and routing strategies. Moreover, we find that the shutdown of targeted edges can effectively release traffic load passing through large-degree nodes, rendering a relatively low probability of infection to these nodes.

  15. Protection Over Asymmetric Channels, S-MATE: Secure Multipath Adaptive Traffic Engineering

    E-Print Network [OSTI]

    Aly, Salah A; Poor, H Vincent; Walid, Anwar I

    2010-01-01T23:59:59.000Z

    Several approaches have been proposed to the problem of provisioning traffic engineering between core network nodes in Internet Service Provider (ISP) networks. Such approaches aim to minimize network delay, increase capacity, and enhance security services between two core (relay) network nodes, an ingress node and an egress node. MATE (Multipath Adaptive Traffic Engineering) has been proposed for multipath adaptive traffic engineering between an ingress node (source) and an egress node (destination) to distribute the network flow among multiple disjoint paths. Its novel idea is to avoid network congestion and attacks that might exist in edge and node disjoint paths between two core network nodes. This paper proposes protection schemes over asymmetric channels. Precisely, the paper aims to develop an adaptive, robust, and reliable traffic engineering scheme to improve performance and reliability of communication networks. This scheme will also provision Quality of Server (QoS) and protection of traffic engine...

  16. Low volume flow meter

    DOE Patents [OSTI]

    Meixler, Lewis D. (East Windsor, NJ)

    1993-01-01T23:59:59.000Z

    The low flow monitor provides a means for determining if a fluid flow meets a minimum threshold level of flow. The low flow monitor operates with a minimum of intrusion by the flow detection device into the flow. The electrical portion of the monitor is externally located with respect to the fluid stream which allows for repairs to the monitor without disrupting the flow. The electronics provide for the adjustment of the threshold level to meet the required conditions. The apparatus can be modified to provide an upper limit to the flow monitor by providing for a parallel electronic circuit which provides for a bracketing of the desired flow rate.

  17. Calibration of Dynamic Traffic Assignment Models with Point-to-Point Traffic Surveillance

    E-Print Network [OSTI]

    Vaze, Vikrant

    Accurate calibration of demand and supply simulators within a dynamic traffic assignment system is critical for consistent travel information and efficient traffic management. Emerging traffic surveillance devices such as ...

  18. Calibration of dynamic traffic assignment models with point-to-point traffic surveillance

    E-Print Network [OSTI]

    Vaze, Vikrant (Vikrant Suhas)

    2007-01-01T23:59:59.000Z

    Accurate calibration of demand and supply simulators within a Dynamic Traffic Assignment (DTA) system is critical for the provision of consistent travel information and efficient traffic management. Emerging traffic ...

  19. Seven Traffic Signals in Two Minutes

    Broader source: Energy.gov [DOE]

    Topeka, Kansas has activated the first of three key traffic corridors to receive a "green light tunnel," a real-time adaptive traffic signal system that synchronizes signals to create a series of...

  20. Built Environmental Correlates of Traffic Collisions 

    E-Print Network [OSTI]

    Yu, Chia-Yuan

    2014-07-01T23:59:59.000Z

    Traffic safety has become an important concern in recent years. Built environmental characteristics have been identified as a critical factor in affecting traffic safety. However, several research gaps remain in the ...

  1. Fermilab | Traffic Safety at Fermilab |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist.New Mexico Feb. 13, 2013FocusreceivesTraffic Safety Traffic

  2. DATALITE: a Distributed Architecture for Traffic Analysis via Light-weight Traffic Digest

    E-Print Network [OSTI]

    Chao, Jonathan

    DATALITE: a Distributed Architecture for Traffic Analysis via Light-weight Traffic Digest for Traffic Analysis via LIght- weight Traffic digEst, which introduces a set of new distributed algorithms digests (TD's) amongst the network nodes. A TD for N packets only requires O(loglog N) bits of memory

  3. Adjusted Estimates of Texas Natural Gas Production

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

    1 Energy Information Administration Adjusted Estimates of Texas Natural Gas Production Background The Energy Information Administration (EIA) is adjusting its estimates of natural...

  4. FAA Air Traffic Organization Safety Management

    Broader source: Energy.gov [DOE]

    Presenter: Mark DeNicuolo, Manager Performance and Analyses Air Traffic Organization Safety and Technical Training Federal Aviation Administration

  5. 2001 TRAFFIC ZONE BOUNDARIES Zone Numbers

    E-Print Network [OSTI]

    Toronto, University of

    2001 TRAFFIC ZONE BOUNDARIES Zone Numbers & Detailed Definitions #12;2001 TRAFFIC ZONE BOUNDARIES of Toronto Joint Program in Transportation January 2003 #12;PREFACE This report presents the 2001 traffic zone numbers by local municipalities in the 2001 TTS survey area. The second part presents detailed

  6. May 21, 2014 Local Agency Traffic

    E-Print Network [OSTI]

    Minnesota, University of

    Field Evaluation Traffic Data Collection Processes Study Is there better EQUIPMENT for collecting low Improvements Field Evaluation Traffic Data Collection Processes Study Is there better EQUIPMENT for collecting;Project Overview 2013-2014Local Agency Data Collection 5 · Tested traffic sensors in a low

  7. CHANGES IN THE FLOW-DENSITY RELATION DUE TO ENVIRONMENTAL, VEHICLE, AND

    E-Print Network [OSTI]

    Kockelman, Kara M.

    with slightly higher flows than those predicted for accelerating vehicles. KEY WORDS: Traffic models, flow in accessing the traffic data. Thanks also go to Karl Petty for maintaining the web site from which these data, statistical examinations of multiple hypotheses based on a wide range of flow-density data are performed

  8. Solving the additive eigenvalue problem associated to a dynamics of a 2D-traffic system

    E-Print Network [OSTI]

    Nadir Farhi

    2009-08-25T23:59:59.000Z

    This is a technical note where we solve the additive eigenvalue problem associated to a dynamics of a 2D-traffic system. The traffic modeling is not explained here. It is available in \\cite{Far08}. It consists of a microscopic road traffic model of two circular roads crossing on one junction managed with the priority-to-the-right rule. It is based on Petri nets and minplus algebra. One of our objectives in \\cite{Far08} was to derive the fundamental diagram of 2D-traffic, which is the relation between the density and the flow of vehicles. The dynamics of this system, derived from a Petri net design, is non monotone and additively homogeneous of degree 1. In this note, we solve the additive eigenvalue problem associated to this dynamics.

  9. Atypical Behavior Identification in Large Scale Network Traffic

    SciTech Connect (OSTI)

    Best, Daniel M.; Hafen, Ryan P.; Olsen, Bryan K.; Pike, William A.

    2011-10-23T23:59:59.000Z

    Cyber analysts are faced with the daunting challenge of identifying exploits and threats within potentially billions of daily records of network traffic. Enterprise-wide cyber traffic involves hundreds of millions of distinct IP addresses and results in data sets ranging from terabytes to petabytes of raw data. Creating behavioral models and identifying trends based on those models requires data intensive architectures and techniques that can scale as data volume increases. Analysts need scalable visualization methods that foster interactive exploration of data and enable identification of behavioral anomalies. Developers must carefully consider application design, storage, processing, and display to provide usability and interactivity with large-scale data. We present an application that highlights atypical behavior in enterprise network flow records. This is accomplished by utilizing data intensive architectures to store the data, aggregation techniques to optimize data access, statistical techniques to characterize behavior, and a visual analytic environment to render the behavioral trends, highlight atypical activity, and allow for exploration.

  10. A rigorous treatment of a follow-the-leader traffic model with traffic lights present

    SciTech Connect (OSTI)

    Argall, Brenna; Cheleshkin, Eugene; Greenberg, J.M.; Hinde, Colin; Lin, Pei-Jen

    2003-07-16T23:59:59.000Z

    Traffic flow on a unidirectional roadway in the presence of traffic lights is modeled. Individual car responses to green, yellow, and red lights are postulated and these result in rules governing the acceleration and deceleration of individual cars. The essence of the model is that only specific cars are directly affected by the lights. The other cars behave according to simple follow-the-leader rules which limit their speed by the spacing between it and the car directly ahead. The model has a number of desirable properties; namely cars do not run red lights, cars do not smash into one another, and cars exhibit no velocity reversals. In a situation with multiple lights operating in-phase we get, after an initial startup period, a constant number of cars through each light during any green-yellow period. Moreover, this flux is less by one or two cars per period than the flux obtained in discretized versions of the idealized Lighthill, Whitham, Richards model which allows for infinite accelerations.

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

    SciTech Connect (OSTI)

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

    2011-02-01T23:59:59.000Z

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

  12. Transforming Traffic Signals to Support Sustainability

    E-Print Network [OSTI]

    Bertini, Robert L.

    transportation modes · Go beyond minimum design standards · Improve nonmotorized facilities during maintenance trafficed locations #12;· Intersection treatment #12;Graphic by Bill Kloos, City of Port · Traditional

  13. Test instances for the traffic assignment problem

    E-Print Network [OSTI]

    2008-01-08T23:59:59.000Z

    Jan 8, 2008 ... mation on test problems previously used in the literature to facilitate benchmarking. Keywords. Traffic assignment problem, BPR function, ...

  14. Improvement of the Road Traffic Management by an Ant-Hierarchical Fuzzy System

    E-Print Network [OSTI]

    Casillas Barranquero, Jorge

    of an adaptive vehicle guidance system. The proposed method is implemented as a deliberative module of a vehicle quality in terms of time, fluidity, and adaptability. Index Terms--transportation, adaptive vehicle of ITS are the vehicle guidance [1], the optimization of the road traffic flow [2], the manage- ment

  15. Continuous kinematic wave models of merging traffic Wen-Long Jin

    E-Print Network [OSTI]

    Mease, Kenneth D.

    Continuous kinematic wave models of merging traffic flow Wen-Long Jin February 12, 2010 Abstract to admissible conditions such that there are no positive and negative kinematic waves on the upstream waves. Discussions and future studies are presented in the conclusion section. Key words: Kinematic wave

  16. On the distribution schemes for determining flows through a merge W. L. Jin and H. M. Zhang

    E-Print Network [OSTI]

    Mease, Kenneth D.

    of a general Riemann problem will be of interest in future studies. Keywords: The kinematic wave traffic flow of realistic size. The kinematic wave model is a promising candidate for these tasks since it describes traffic for simulating traffic dynamics in a large network. In the seminal kinematic wave model by Lighthill

  17. A comparison of thick film and thin film traffic stripes

    E-Print Network [OSTI]

    Keese, Charles J

    1952-01-01T23:59:59.000Z

    Striys. . . Pigmented Bitusmn Stripes . Asphalt %uilt-Upa Striye vith Pigmented Portland Cement Mortar Cover Course 38 . ~ 41 Thin Film Stripes Used for Comparison Results of Comparing Thick Film Stripes and Thin Film Paint Stripes . ~ ~ ~ ~ ~ 43... was aspbaltio oonorets. The pavement in Test Areas 2y 3p and 4 vas portland cesmnh ooncrete, Two test areas (3 and 4) vere located in such manner as to provide uninterrupted flow of traffic over tbs entire length of the test area. The other two test areas (1...

  18. Addendum to 2010 NREL Environmental Performance Report ? Traffic...

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

    Update November 2011 Page 1 of 4 Traffic Mitigation Action Plan 2010 Update Traffic Management A Mitigation Action Plan (MAP), finalized in May 2008, was developed to address...

  19. Network Traffic Analysis and SCADA Security

    E-Print Network [OSTI]

    Hu, Jiankun

    systems are widely used for monitoring and controlling industrial systems including power plants, water of traffic generated. Finally, network traffic monitoring can be used in security management to identify the vulnerabilities of SCADA systems because this 383 © Springer 2010 , Handbook of Information and Communication

  20. Seven Traffic Signals in Two Minutes

    SciTech Connect (OSTI)

    None

    2011-01-01T23:59:59.000Z

    Topeka, KS has activated the first of three key traffic corridors to receive a "green light tunnel," a real-time adaptive traffic signal system that synchronizes signals to create a series of green lights for motorists. The result is fewer stops, less travel time and -- most importantly -- a lot of saved gasoline.

  1. Approaching Real-time Network Traffic Classification

    E-Print Network [OSTI]

    Haddadi, Hamed

    and studies. It serves as the input for Intrusion Detection Systems, provides Class-of-Service (CoS) mapping22 Approaching Real-time Network Traffic Classification ISSN 1470-5559 RR-06-12 October 2006-time Network Traffic Classification Wei Li, Kaysar Abdin, Robert Dann and Andrew Moore Department of Computer

  2. applying dynamic flow-density: Topics by E-print Network

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

    20 21 22 23 24 25 Next Page Last Page Topic Index 1 Online traffic flow model applying dynamic flow-density relation CERN Preprints Summary: This dissertation describes a new...

  3. Autonomous Traffic Control System Using Agent Based Technology

    E-Print Network [OSTI]

    M, Venkatesh; V, Srinivas

    2011-01-01T23:59:59.000Z

    The way of analyzing, designing and building of real-time projects has been changed due to the rapid growth of internet, mobile technologies and intelligent applications. Most of these applications are intelligent, tiny and distributed components called as agent. Agent works like it takes the input from numerous real-time sources and gives back the real-time response. In this paper how these agents can be implemented in vehicle traffic management especially in large cities and identifying various challenges when there is a rapid growth of population and vehicles. In this paper our proposal gives a solution for using autonomous or agent based technology. These autonomous or intelligent agents have the capability to observe, act and learn from their past experience. This system uses the knowledge flow of precedent signal or data to identify the incoming flow of forthcoming signal. Our architecture involves the video analysis and exploration using some Intelligence learning algorithm to estimate and identify the...

  4. A multiagent urban traffic simulation Part I: dealing with the ordinary

    E-Print Network [OSTI]

    Tranouez, Pierrick; Daudé, Eric

    2009-01-01T23:59:59.000Z

    We describe in this article a multiagent urban traffic simulation, as we believe individual-based modeling is necessary to encompass the complex influence the actions of an individual vehicle can have on the overall flow of vehicles. We first describe how we build a graph description of the network from purely geometric data, ESRI shapefiles. We then explain how we include traffic related data to this graph. We go on after that with the model of the vehicle agents: origin and destination, driving behavior, multiple lanes, crossroads, and interactions with the other vehicles in day-to-day, ?ordinary? traffic. We conclude with the presentation of the resulting simulation of this model on the Rouen agglomeration.

  5. Robust Risk Adjustment in Health Insurance

    E-Print Network [OSTI]

    2014-08-07T23:59:59.000Z

    Aug 7, 2014 ... Moody's estimates the preliminary median operating margins for ..... [1] Staff, ORYX risk adjustment guide, Tech. rep., Joint Commission (2014).

  6. Introducing Traffic Analysis Attacks, Defences and Public Policy Issues. . .

    E-Print Network [OSTI]

    Danezis, George

    Roots Traffic analysis is a key part of signal intelligence and electronic warfare. Michael Hermann, who

  7. Introducing Traffic Analysis George Danezis and Richard Clayton

    E-Print Network [OSTI]

    Danezis, George

    . 2 Military Roots Traffic analysis is a key component of signal intelligence and electronic warfare

  8. Kinematic Wave Models of Network Vehicular Traffic Wenlong Jin

    E-Print Network [OSTI]

    Mease, Kenneth D.

    Kinematic Wave Models of Network Vehicular Traffic By Wenlong Jin B.S. (University of Science Applied Mathematics Kinematic Wave Models of Network Vehicular Traffic Abstract The kinematic wave theory vehicular traffic. In this dissertation, we study kinematic wave models of network traffic, which

  9. Structure Evolution of Dynamic Bayesian Network for Traffic Accident Detection

    E-Print Network [OSTI]

    Cho, Sung-Bae

    Structure Evolution of Dynamic Bayesian Network for Traffic Accident Detection Ju-Won Hwang, Young and the accuracy in a domain of the traffic accident detection. Keywords-structure of dynamic Bayesian network; Bayesian network, evolution I. INTRODUCTION Every year, traffic congestion and traffic accidents have been

  10. Efficient Adjustable Reflectivity Smart Window

    SciTech Connect (OSTI)

    D. Morgan Tench

    2005-12-01T23:59:59.000Z

    This project addressed the key technical issues for development of an efficient smart window based on reversible electrochemical transfer of silver between a mirror electrode and a localized counter electrode. Effort to provide uniform switching over large areas focused on use of a resistive transparent electrode innerlayer to increase the interelectrode resistance. An effective edge seal was developed in collaboration with adhesive suppliers and an electrochromic device manufacturer. Work to provide a manufacturable counter electrode focused on fabricating a dot matrix electrode without photolithography by electrodeposition of Pt nuclei on inherent active sites on a transparent oxide conductor. An alternative counter electrode based on a conducting polymer and an ionic liquid electrolyte was also investigated. Work in all of these areas was successful. Sputtered large-bandgap oxide innerlayers sandwiched between conductive indium tin oxide (ITO) layers were shown to provide sufficient cross-layer resistance (>300 ohm/cm{sup 2}) without significantly affecting the electrochemical properties of the ITO overlayer. Two edge seal epoxies, one procured from an epoxy manufacturer and one provided by an electrochromic device manufacturer in finished seals, were shown to be effective barriers against oxygen intrusion up to 80 C. The optimum density of nuclei for the dot matrix counter electrode was attained without use of photolithography by electrodeposition from a commercial alkaline platinum plating bath. Silver loss issues for cells with dot matrix electrodes were successfully addressed by purifying the electrolyte and adjusting the cell cycling parameters. More than 30K cycles were demonstrated for a REM cell (30-cm square) with a dot matrix counter electrode. Larger cells (30-cm square) were successfully fabricated but could not be cycled since the nucleation layers (provided by an outside supplier) were defective so that mirror deposits could not be produced.

  11. Partitioning Complexity in Air Traffic Management Task

    E-Print Network [OSTI]

    Cummings, M. L.

    2006-01-01T23:59:59.000Z

    Cognitive complexity is a term that appears frequently in air traffic control (ATC) research literature, yet there is little principled investigation of the potential sources of cognitive complexity. Three distinctly ...

  12. On traffic analysis attacks and countermeasures

    E-Print Network [OSTI]

    Fu, Xinwen

    2007-04-25T23:59:59.000Z

    . This is true even if some commonly used countermeasures (e.g., link padding) have been deployed. We proposed an alternative effective countermeasure to counter this passive traffic analysis attack. Our extensive experimental results indicated...

  13. The design of a microprogrammed traffic controller

    E-Print Network [OSTI]

    Tietjen, James Leslie

    1973-01-01T23:59:59.000Z

    Subject: Electrical Fngineering THE DESIGN OF A MICROPROGRAMMED TRAFFIC CONTROLLER A Thesis by JAMES LESLIE TIETJEN Approved as to style and content by: ar a o C rttee ea o epartm nt em er m er Mem er em er Mem er August 1973 ABSTRACT... The Design of a Microprogrammed Traffic Controller. (August 1973) James Leslie Tietjen, B. S, , Texas ABM 11niversity Directed By: Dr, V. Thomas Rhyne The purpose of this thesis is to design, simulate, and evaluate a microprogrammed system...

  14. Engine control system having fuel-based adjustment

    DOE Patents [OSTI]

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

    2011-03-15T23:59:59.000Z

    A control system for an engine having a cylinder is disclosed having an engine valve configured to affect a fluid flow of the cylinder, an actuator configured to move the engine valve, and an in-cylinder sensor configured to generate a signal indicative of a characteristic of fuel entering the cylinder. The control system also has a controller in communication with the actuator and the sensor. The controller is configured to determine the characteristic of the fuel based on the signal and selectively regulate the actuator to adjust a timing of the engine valve based on the characteristic of the fuel.

  15. Fuel consumption analyses for urban traffic management

    SciTech Connect (OSTI)

    Bowyer, D.P.; Akcelik, R.; Biggs, D.C.

    1986-12-01T23:59:59.000Z

    A primary output from the fuel consumption research conducted by the Australian Road Research Board (ARRB) is the ARRB Special Report, Guide to Fuel Consumption Analyses. This article briefly summarizes the background of the guide, describes its major features, and considers its relevance to urban traffic management decision. The guide was a result of a technical audit of studies relating to energy consumption in traffic and transport systems. A brief summary of the audit process and findings is given. The guide is intended primarily as an aid to effective use of fuel consumption models in the design of traffic management schemes. The forms of four interrelated fuel consumption models of the guide are described and their likely transferability to various situations is indicated. Each traffic and fuel consumption model is appropriate to a particular scale of traffic system. This link is shown for several selected traffic models. As an example, a discussion of the importance of accurate fuel consumption estimates for the case of priority control at a particular intersection is given.

  16. Statewide Traffic Flow Data: Probe Vehicle Study for

    E-Print Network [OSTI]

    Minnesota, University of

    ! · How have you dealt with the non-technical issues?! · Have you conducted an evaluation?! · Data for data! #12;INRIX Data Evaluation · 30-day trial evaluation, August-September 2010! · 17 roadway segments chosen in Iowa! · Existing sensors (loops, NIT) used as baseline for comparison! · Data was queried from

  17. Magnetic bearing element with adjustable stiffness

    DOE Patents [OSTI]

    Post, Richard F

    2013-11-12T23:59:59.000Z

    A compact magnetic bearing element is provided which is made of permanent magnet discs configured to be capable of the adjustment of the bearing stiffness and levitation force over a wide range.

  18. Risk-adjusted monitoring of survival times

    SciTech Connect (OSTI)

    Sego, Landon H.; Reynolds, Marion R.; Woodall, William H.

    2009-02-26T23:59:59.000Z

    We consider the monitoring of clinical outcomes, where each patient has a di®erent risk of death prior to undergoing a health care procedure.We propose a risk-adjusted survival time CUSUM chart (RAST CUSUM) for monitoring clinical outcomes where the primary endpoint is a continuous, time-to-event variable that may be right censored. Risk adjustment is accomplished using accelerated failure time regression models. We compare the average run length performance of the RAST CUSUM chart to the risk-adjusted Bernoulli CUSUM chart, using data from cardiac surgeries to motivate the details of the comparison. The comparisons show that the RAST CUSUM chart is more efficient at detecting a sudden decrease in the odds of death than the risk-adjusted Bernoulli CUSUM chart, especially when the fraction of censored observations is not too high. We also discuss the implementation of a prospective monitoring scheme using the RAST CUSUM chart.

  19. Determination of traffic responsive plan selection factors and thresholds using artificial neural networks

    E-Print Network [OSTI]

    Sharma, Anuj

    2004-11-15T23:59:59.000Z

    Traffic congestion has become a menace to civilized society. It degrades air quality, jeopardizes safety and causes delay. Traffic congestion can be alleviated by providing an effective traffic control signal system. Closed-loop traffic control...

  20. Using Electronic Adjustable Speed Drives for Efficiency Improvement and Cost Reduction

    E-Print Network [OSTI]

    Friedman, N. R.

    U.S. industry and utilities have been using ac adjustable speed drives (ASDs) for more than 50 years. ASDs utilize power electronics technology to control the flow of power to an ac motor, thereby controlling the motor’s speed and rate of energy...

  1. Laboratory to change vehicle traffic-screening regimen at vehicle...

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

    Changes to vehicle traffic-screening Laboratory to change vehicle traffic-screening regimen at vehicle inspection station Lanes two through five will be open 24 hours a day and...

  2. automated control traffic: Topics by E-print Network

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

    technology, are to increase the safety and through-put of the existing highway by traffic automation. Advanced Vehicle Control... Huandra, Rusli 1998-01-01 14 Traffic Control on...

  3. Supporting the Future Air Traffic Control Projection Process

    E-Print Network [OSTI]

    Davison, H. J.

    2003-01-01T23:59:59.000Z

    In air traffic control, projecting what the air traffic situation will be over the next 30 seconds to 30 minutes is a key process in identifying conflicts that may arise so that evasive action can be taken upon discovery ...

  4. Modeling and estimation techniques for understanding heterogeneous traffic behavior

    E-Print Network [OSTI]

    Zhao, Zhili

    2004-09-30T23:59:59.000Z

    The majority of current internet traffic is based on TCP. With the emergence of new applications, especially new multimedia applications, however, UDP-based traffic is expected to increase. Furthermore, multimedia applications have sparkled...

  5. A study of freeway traffic volume control

    E-Print Network [OSTI]

    Smith, Edwin McMurray

    1958-01-01T23:59:59.000Z

    LI8 RARY i & m ceLLCSE el' lEXAe A STUDY GP FRE8NAY TRAFFIC VOLUME CONTROL Mwin McMurray Smith A Thesis Submitteh to the GracLuate School of the Agricultural ant Mechanical College of Texas in partial fulfillment of the requirements...; to Mr. W. H. Carsten, Director, Department of Traffic Control, City of Dallas; to Mr. W. E. Carmichael, District Engineer, Texas Highway Department; and to the Texas Transportation Institute for furnishing the data which were analyzed for this thesis...

  6. INTRODUCTION Several proposals for future air traffic man-

    E-Print Network [OSTI]

    Parasuraman, Raja

    for Aeronautics [RTCA], 1995) and Distributed Air/Ground Traffic Management (DAG-TM; Na- tional Aeronautics

  7. On the management of variable bit-rate traffic streams in packet-switched networks

    E-Print Network [OSTI]

    Yoo, Byeongki

    1998-01-01T23:59:59.000Z

    in GPS Example of GPS when 2Wt = Ws PGPS service sequence of the jobs in the arrival pattern of Fig. 1 . . 7 Example of VC Unfair behavior of VC 10 Arrival and service rates of Fig. 5 Unfair behavior of SCFQ 13 Concept of time window in grouping... the over-service flow 31 18 Snapshot of packet transmission in GSF 32 FIGURE Page 19 Comparison of arrival and transmission of flow 1 in GSF 33 20 21 Example of GOP in MPEG Functions for traffic smoothing 39 39 22 Autocorrelation of lecture...

  8. Gresham/Multnomah County Phase 3 Traffic Signal System Optimization September 2008 Adaptive Traffic Signal Control System Benefits Report

    E-Print Network [OSTI]

    Bertini, Robert L.

    Gresham/Multnomah County Phase 3 Traffic Signal System Optimization September 2008 Adaptive Traffic Signal Control System Benefits Report Page i TTAABBLLEE OOFF CCOONNTTEENNTTSS 1 Executive Summary......................................................................................................................15 2.3.1 System Evaluation

  9. Author's personal copy Gasoline prices and traffic safety in Mississippi

    E-Print Network [OSTI]

    Levinson, David M.

    Author's personal copy Gasoline prices and traffic safety in Mississippi Guangqing Chi a, , Arthur November 2010 Keywords: Gasoline prices Traffic crashes Traffic safety Age Gender Race Problem: Limited literature suggests that gasoline prices have substantial effects on reducing fatal crashes. However

  10. Air Traffic Control Using Virtual Stationary Automata Matthew D. Brown

    E-Print Network [OSTI]

    Lynch, Nancy

    Air Traffic Control Using Virtual Stationary Automata by Matthew D. Brown B.S., Massachusetts by . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Arthur C. Smith Chairman, Department Committee on Graduate Students #12;Air Traffic Control Using Virtual of Engineering Abstract As air travel has become an essential part of modern life, the air traffic control system

  11. Randomization in Traffic Information Sharing Systems Masaaki Tanizaki

    E-Print Network [OSTI]

    Wolfson, Ouri E.

    , we consider a traffic information sharing system based on Floating Car Data (FCD). FCD is oneRandomization in Traffic Information Sharing Systems Masaaki Tanizaki Intelligent Media Systems to the server. The traffic information sharing system broadcasts speed information updated by such transmission

  12. VEHICLE EMISSIONS AND TRAFFIC MEASURES: EXPLORATORY ANALYSIS OF FIELD

    E-Print Network [OSTI]

    Frey, H. Christopher

    VEHICLE EMISSIONS AND TRAFFIC MEASURES: EXPLORATORY ANALYSIS OF FIELD OBSERVATIONS AT SIGNALIZED between vehicle emissions and traffic control measures is an important step toward reducing the potential roadway design and traffic control, have the ability to reduce vehicle emissions. However, current vehicle

  13. NetViewer: A Network Traffic Visualization and Analysis Tool

    E-Print Network [OSTI]

    Reddy, Narasimha

    . NetViewer can be employed to detect and identify network anomalies such as DoS/DDoS attacks, worms from both the commercial and free soft- ware communities. To study and classify traffic on the network most of the time. In such cases, attack traffic may not induce significant overshoot in traffic volume

  14. Cost of Gas Adjustment for Gas Utilities (Maine)

    Broader source: Energy.gov [DOE]

    This rule, applicable to gas utilities, establishes rules for calculation of gas cost adjustments, procedures to be followed in establishing gas cost adjustments and refunds, and describes reports...

  15. Online Calibration for Dynamic Traffic Constantinos Antoniou

    E-Print Network [OSTI]

    Bertini, Robert L.

    On­line Calibration for Dynamic Traffic Assignment Constantinos Antoniou October 5, 2007 Seminar­line DTA framework Demand simulator Supply simulator State estimation and model calibration Network calibration approaches include subset of these models Seminar at Portland State University 3 #12;Constantinos

  16. Does Daylight Savings Time Affect Traffic Accidents?

    E-Print Network [OSTI]

    Deen, Sophia 1988-

    2012-04-20T23:59:59.000Z

    This paper studies the effect of changes in accident pattern due to Daylight Savings Time (DST). The extension of the DST in 2007 provides a natural experiment to determine whether the number of traffic accidents is affected by shifts in hours...

  17. Performance Analysis of Isolated Intersection Traffic Signals 

    E-Print Network [OSTI]

    Yin, Kai

    2013-08-01T23:59:59.000Z

    This dissertation analyzes two unsolved problems to fulfill the gap in the literature: (1). What is the vehicle delay and intersection capacity considering left-turn traffic at a pre-timed signal? (2). What are the mean and variance of delay...

  18. Smart-card traffic system keeps Singapore

    E-Print Network [OSTI]

    Hunt, Julian

    Smart-card traffic system keeps Singapore in the fast lane Sir -- Recognizing the high economic tariffs from a smart card installed in a slot near the vehicle's windscreen. Infringement is registered. For expressways and approach routes leading to the city, a tiered pricing scheme operates during the peak period

  19. Performance Analysis of Isolated Intersection Traffic Signals

    E-Print Network [OSTI]

    Yin, Kai

    2013-08-01T23:59:59.000Z

    This dissertation analyzes two unsolved problems to fulfill the gap in the literature: (1). What is the vehicle delay and intersection capacity considering left-turn traffic at a pre-timed signal? (2). What are the mean and variance of delay...

  20. Metropolitan Road Traffic Simulation on FPGAs.

    SciTech Connect (OSTI)

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

    2005-01-01T23:59:59.000Z

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

  1. Bicycle traffic planning and design criteria

    E-Print Network [OSTI]

    Vathana, Jhirasak

    1975-01-01T23:59:59.000Z

    for bicycle facilities, 34 15 16 17 18 19 20 21 Bicycle and wheelchair ramp, Curb drain opening spacings Bicycle facility extruded curb Curb drain opening spacing. Bicycle facility signing. Motor vehicle directed warning signs' Regulatory signs... design: Bicycle facility on 59 an arterial street crossing a collector street. The bicycle facility is separated from motor vehicle traffic by strip, 32 German intersection design: bicycle facility on 60 an arterial street crossing a collector street...

  2. Article mounting and position adjustment stage

    DOE Patents [OSTI]

    Cutburth, Ronald W. (Tracy, CA); Silva, Leonard L. (Livermore, CA)

    1988-01-01T23:59:59.000Z

    An improved adjustment and mounting stage of the type used for the detection of laser beams is disclosed. A ring sensor holder has locating pins on a first side thereof which are positioned within a linear keyway in a surrounding housing for permitting reciprocal movement of the ring along the keyway. A rotatable ring gear is positioned within the housing on the other side of the ring from the linear keyway and includes an oval keyway which drives the ring along the linear keyway upon rotation of the gear. Motor-driven single-stage and dual (x, y) stage adjustment systems are disclosed which are of compact construction and include a large laser transmission hole.

  3. Article mounting and position adjustment stage

    DOE Patents [OSTI]

    Cutburth, R.W.; Silva, L.L.

    1988-05-10T23:59:59.000Z

    An improved adjustment and mounting stage of the type used for the detection of laser beams is disclosed. A ring sensor holder has locating pins on a first side thereof which are positioned within a linear keyway in a surrounding housing for permitting reciprocal movement of the ring along the keyway. A rotatable ring gear is positioned within the housing on the other side of the ring from the linear keyway and includes an oval keyway which drives the ring along the linear keyway upon rotation of the gear. Motor-driven single-stage and dual (x, y) stage adjustment systems are disclosed which are of compact construction and include a large laser transmission hole. 6 figs.

  4. NETWORK FLOWS AND THE MAX-FLOW MIN-CUT AL STAPLES-MOORE

    E-Print Network [OSTI]

    May, J. Peter

    travels from one point to another, e.g. the spread of data in a network, traffic along roads, water about flows to define an edge's residual capacity as the difference between an edge's maximum allowed to define the residual capacity along a path from s to t. Definition 1.3. The residual capacity of an edge

  5. Remote control for anode-cathode adjustment

    DOE Patents [OSTI]

    Roose, Lars D. (Albuquerque, NM)

    1991-01-01T23:59:59.000Z

    An apparatus for remotely adjusting the anode-cathode gap in a pulse power machine has an electric motor located within a hollow cathode inside the vacuum chamber of the pulse power machine. Input information for controlling the motor for adjusting the anode-cathode gap is fed into the apparatus using optical waveguides. The motor, controlled by the input information, drives a worm gear that moves a cathode tip. When the motor drives in one rotational direction, the cathode is moved toward the anode and the size of the anode-cathode gap is diminished. When the motor drives in the other direction, the cathode is moved away from the anode and the size of the anode-cathode gap is increased. The motor is powered by batteries housed in the hollow cathode. The batteries may be rechargeable, and they may be recharged by a photovoltaic cell in combination with an optical waveguide that receives recharging energy from outside the hollow cathode. Alternatively, the anode-cathode gap can be remotely adjusted by a manually-turned handle connected to mechanical linkage which is connected to a jack assembly. The jack assembly converts rotational motion of the handle and mechanical linkage to linear motion of the cathode moving toward or away from the anode.

  6. Optimization Online - Test instances for the traffic assignment problem

    E-Print Network [OSTI]

    Frédéric Babonneau

    Abstract: This short note on the Traffic Assignment Problem (TAP) provides the relevant information on test problems previously used in the literature to facilitate

  7. actuated traffic signal controllers: Topics by E-print Network

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

    Ramanan Venkat 2012-01-01 8 UNCORRECTED 2 Stochastic adaptive control model for traffic signal systems Environmental Sciences and Ecology Websites Summary: process. The model...

  8. average daily traffic: Topics by E-print Network

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

    Next Page Last Page Topic Index 1 April 2014 Annual Average DailyTraffic (AADT) is a key input in operations and transportation planning Environmental Sciences and Ecology...

  9. Measurements of Diesel Truck Traffic Associated with Goods Movement

    E-Print Network [OSTI]

    Houston, Douglas; Krudysz, Margaret; Winer, Arthur

    2007-01-01T23:59:59.000Z

    Concentrations of PM2.5 and Diesel Exhaust Particles onPatterns of Measured Port Diesel Traffic. (a) Intersectionof particulate emissions from diesel engines: a review’, J.

  10. Theoretical approach and impact of correlations on the critical packet generation rate in traffic dynamics on complex networks

    E-Print Network [OSTI]

    Fronczak, Piotr

    2015-01-01T23:59:59.000Z

    Using the formalism of the biased random walk in random uncorrelated networks with arbitrary degree distributions, we develop theoretical approach to the critical packet generation rate in traffic based on routing strategy with local information. We explain microscopic origins of the transition from the flow to the jammed phase and discuss how the node neighbourhood topology affects the transport capacity in uncorrelated and correlated networks.

  11. GLOBAL OPTIMIZATION OF MULTIPHASE FLOW NETWORKS IN OIL AND GAS PRODUCTION SYSTEMS

    E-Print Network [OSTI]

    Johansen, Tor Arne

    1 GLOBAL OPTIMIZATION OF MULTIPHASE FLOW NETWORKS IN OIL AND GAS PRODUCTION SYSTEMS MSc. Hans in an oil production system is developed. Each well may be manipulated by injecting lift gas and adjusting in the maximum oil flow rate, water flow rate, liquid flow rate, and gas flow rate. The wells may also

  12. Method and apparatus for controlling fluid flow

    DOE Patents [OSTI]

    Miller, J.R.

    1980-06-27T23:59:59.000Z

    A method and apparatus for precisely controlling the rate (and hence amount) of fluid flow are given. The controlled flow rate is finely adjustable, can be extremely small (on the order of microliter-atmospheres per second), can be adjusted to zero (flow stopped), and is stable to better than 1% with time. The dead volume of the valve can be made arbitrarily small, in fact essentially zero. The valve employs no wearing mechanical parts (including springs, stems, or seals). The valve is finely adjustable, has a flow rate dynamic range of many decades, can be made compatible with any fluid, and is suitable for incorporation into an open or closed loop servo-control system.

  13. Circulating fibrocytes traffic to the lungs in response to CXCL12 and mediate fibrosis

    E-Print Network [OSTI]

    2004-01-01T23:59:59.000Z

    fibrocytes traffic to the lungs in response to CXCL12 andto CXCL12 and traffics to the lungs in a murine model of+ fibrocytes also traffic to the lungs in response to a

  14. Road traffic accidents in Kathmandu¿an hour of education yields a glimmer of hope

    E-Print Network [OSTI]

    Basnet, Bibhusan; Vohra, Rais; Bhandari, Amit; Pandey, Subash

    2013-01-01T23:59:59.000Z

    et al. : Road traffic accidents in Kathmandu— an hour ofOpen Access Road traffic accidents in Kathmandu—an hour ofnumber of road traffic accidents in the year 2012 decreased

  15. Evaluation of detector placement strategies for first generation traffic responsive signal control

    E-Print Network [OSTI]

    Brehmer, Christopher Lynn

    1996-01-01T23:59:59.000Z

    Traffic responsive signal systems rely on system detector data to evaluate current traffic conditions and select a corresponding timing plan from a library of plans. One of the major decisions surrounding the use of traffic responsive signal systems...

  16. Cyclist route choice, traffic-related air pollution, and lung function: a scripted exposure study

    E-Print Network [OSTI]

    2013-01-01T23:59:59.000Z

    choice, traffic-related air pollution, and lung function: aexposure to traffic-related air pollution on respiratory andR: Traffic- related air pollution and acute changes in heart

  17. Wage adjustment, competitiveness and unemployment East Germany after unification

    E-Print Network [OSTI]

    Pfeifer, Holger

    Wage adjustment, competitiveness and unemployment ­ East Germany after unification Werner Smolny years after unification large differences of the labor market situation in East and West Germany persist adjustment in East Germany and the resulting development of competitiveness and unemployment differentials

  18. Traffic lights for crop-based biofuels

    E-Print Network [OSTI]

    Phalan, Ben

    Traffic lights for crop-based biofuels Ben Phalan Department of Zoology, University of Cambridge, Cambridge CB2 3EJ, UK Email: btp22@cam.ac.uk Nobody likes to have limits put on their freedom. However, in all areas of life... of having to slow down is an acceptable price to pay if it reduces the number of pedestrians killed and injured. How is this relevant to biofuels? There are many different kinds of biofuels, including some with considerable potential to generate cleaner...

  19. Hanford Traffic Safety FAQs - Hanford Site

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

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

  20. NAC 484 - Traffic Laws | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer PlantMunhall, Pennsylvania: Energy Resources Jump to:MuskingumMyers-4 Jump-84 - Traffic Laws

  1. Adjustable expandable cryogenic piston and ring

    DOE Patents [OSTI]

    Mazur, Peter O. (Aurora, IL); Pallaver, Carl B. (Woodridge, IL)

    1980-01-01T23:59:59.000Z

    The operation of a reciprocating expansion engine for cryogenic refrigeration is improved by changing the pistons and rings so that the piston can be operated from outside the engine to vary the groove in which the piston ring is located. This causes the ring, which is of a flexible material, to be squeezed so that its contact with the wall is subject to external control. This control may be made manually or it may be made automatically in response to instruments that sense the amount of blow-by of the cryogenic fluid and adjust for an optimum blow-by.

  2. Elliptically polarizing adjustable phase insertion device

    DOE Patents [OSTI]

    Carr, Roger (Redwood City, CA)

    1995-01-01T23:59:59.000Z

    An insertion device for extracting polarized electromagnetic energy from a beam of particles is disclosed. The insertion device includes four linear arrays of magnets which are aligned with the particle beam. The magnetic field strength to which the particles are subjected is adjusted by altering the relative alignment of the arrays in a direction parallel to that of the particle beam. Both the energy and polarization of the extracted energy may be varied by moving the relevant arrays parallel to the beam direction. The present invention requires a substantially simpler and more economical superstructure than insertion devices in which the magnetic field strength is altered by changing the gap between arrays of magnets.

  3. adjusted clinical groups: Topics by E-print Network

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

    status, psychiatric symptomatology, various family variables, psychosocial adjustment and knowledge of illness, medication, stress management and problem-solving skills......

  4. adjusted clinical group: Topics by E-print Network

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

    status, psychiatric symptomatology, various family variables, psychosocial adjustment and knowledge of illness, medication, stress management and problem-solving skills......

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

    E-Print Network [OSTI]

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

    2015-04-06T23:59:59.000Z

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

  6. Self-adjusting magnetic bearing systems

    DOE Patents [OSTI]

    Post, R.F.

    1998-07-21T23:59:59.000Z

    A self-adjusting magnetic bearing automatically adjusts the parameters of an axially unstable magnetic bearing such that its force balance is maintained near the point of metastable equilibrium. Complete stabilization can be obtained with the application of weak restoring forces either from a mechanical bearing (running at near-zero load, thus with reduced wear) or from the action of residual eddy currents in a snubber bearing. In one embodiment, a torque is generated by the approach of a slotted pole to a conducting plate. The torque actuates an assembly which varies the position of a magnetic shunt to change the force exerted by the bearing. Another embodiment achieves axial stabilization by sensing vertical displacements in a suspended bearing element, and using this information in an electrical servo system. In a third embodiment, as a rotating eddy current exciter approaches a stationary bearing, it heats a thermostat which actuates an assembly to weaken the attractive force between the two bearing elements. An improved version of an electromechanical battery utilizing the designs of the various embodiments is described. 7 figs.

  7. Self-adjusting magnetic bearing systems

    DOE Patents [OSTI]

    Post, Richard F. (Walnut Creek, CA)

    1998-01-01T23:59:59.000Z

    A self-adjusting magnetic bearing automatically adjusts the parameters of an axially unstable magnetic bearing such that its force balance is maintained near the point of metastable equilibrium. Complete stabilization can be obtained with the application of weak restoring forces either from a mechanical bearing (running at near-zero load, thus with reduced wear) or from the action of residual eddy currents in a snubber bearing. In one embodiment, a torque is generated by the approach of a slotted pole to a conducting plate. The torque actuates an assembly which varies the position of a magnetic shunt to change the force exerted by the bearing. Another embodiment achieves axial stabilization by sensing vertical displacements in a suspended bearing element, and using this information in an electrical servo system. In a third embodiment, as a rotating eddy current exciter approaches a stationary bearing, it heats a thermostat which actuates an assembly to weaken the attractive force between the two bearing elements. An improved version of an electromechanical battery utilizing the designs of the various embodiments is described.

  8. A mathematical model and descent algorithm for bilevel traffic management

    E-Print Network [OSTI]

    Patriksson, Michael

    variables enter as parameters in the travel costs. We consider a (small) variety of model settings, and interpret their workings in terms of the traffic network. Key words: Traffic equilibrium; Stackelberg game derivative; Armijo line search; stationary point. 1 Introduction The need for measures to reduce congestion

  9. AN UNSCENTED KALMAN FILTER FOR FREEWAY TRAFFIC ESTIMATION

    E-Print Network [OSTI]

    Mihaylova, Lyudmila

    AN UNSCENTED KALMAN FILTER FOR FREEWAY TRAFFIC ESTIMATION L. Mihaylova , R. Boel and A. Hegyi at boundaries between some segments and averaged within regular time intervals. An Unscented Kalman filter state. Keywords: macroscopic traffic models, unscented Kalman filter, particle filter 1. INTRODUCTION

  10. Model Reference Adaptive Control Framework for Real Time Traffic

    E-Print Network [OSTI]

    Minnesota, University of

    Adaptive Control #12;12 Prescriptive Dynamic Traffic Assignment A Prediction Model and the Reference ModelModel Reference Adaptive Control Framework for Real Time Traffic Management Under Emergency Movement Volume Adaptive Controller Model Reference Adaptive Control (MRAC) Assumptions Super Zone Concept

  11. Hybrid Control Models of Next Generation Air Traffic Management ?

    E-Print Network [OSTI]

    Pappas, George J.

    Hybrid Control Models of Next Generation Air Traffic Management ? C. Tomlin, G. Pappas, J. Lygeros of California at Berkeley Berkeley, CA 94720 Abstract. The study of hierarchical, hybrid control systems by today's Air Traffic Control (ATC), a ground­based system which routes aircraft along predefined jet ways

  12. Joint Traffic Blocking and Routing under Network Failures and Maintenances

    E-Print Network [OSTI]

    Liu, Yong

    Joint Traffic Blocking and Routing under Network Failures and Maintenances Chao Liang ECE Dept paths. Therefore, it is important to design ingress traffic blocking and routing jointly to achieve a good balance between the two factors. Working towards this goal, we formulate a joint ingress blocking

  13. Jetway: Minimizing Costs on Inter-Datacenter Video Traffic

    E-Print Network [OSTI]

    Li, Baochun

    Jetway: Minimizing Costs on Inter-Datacenter Video Traffic Yuan Feng, Baochun Li Department deploy a number of datacenters inter-connected by high-capacity links, spanning different geographical by ISPs, such inter-datacenter video traffic incurs substantial operational costs to a cloud provider

  14. Top-percentile traffic routing problem by Dynamic Programming

    E-Print Network [OSTI]

    Grothey, Andreas

    Top-percentile traffic routing problem by Dynamic Programming Andreas Grothey, Xinan Yang School according to top-percentile pricing. We call this problem the Top-percentile Traffic Routing Problem (Tp problem, which is hard to solve due to the integer variables introduced by top-percentile pricing. Several

  15. Geometric Programming and Mechanism Design for Air Traffic Conflict Resolution

    E-Print Network [OSTI]

    Pappas, George J.

    methods in air traffic control. The problem considered concerns the scheduling of the crossing times traffic controller (ATC). In this setting, numerous conflict resolution methods have been proposed have different valuations for the additional delays imposed by the ATC, and might be willing

  16. California Says''Go'' to Energy-Saving Traffic Lights

    SciTech Connect (OSTI)

    Not Available

    2004-05-01T23:59:59.000Z

    DOE's State Energy Program published this case study in conjunction with the California Energy Commission. It describes the growing use of traffic lights employing the technology of light emitting diodes, or LEDs. Such traffic lights use less energy and produce a brighter illumination.

  17. Increasing Air Traffic: What is the Problem? Areski Hadjaz

    E-Print Network [OSTI]

    Boyer, Edmond

    Increasing Air Traffic: What is the Problem? Areski Hadjaz Thales Air Systems, Rungis, France Email: areski.hadjaz@thalesgroup.com Ga´etan Marceau Thales Air Systems and TAO, Rungis, France Email: gaetan efforts are made to modernize the air traffic management systems to cope with uncertainty, complexity

  18. Traffic Analysis: From Stateful Firewall to Network Intrusion Detection System

    E-Print Network [OSTI]

    Chiueh, Tzi-cker

    1 Traffic Analysis: From Stateful Firewall to Network Intrusion Detection System Fanglu Guo Tzi normalization. Index Terms Packet (traffic) analysis, stateful firewall, network intrusion detection system intrusion detection system (NIDS). Stateful firewall analyzes packets up to their layer 4 headers while NIDS

  19. Guest Editorial Traffic classification and its applications to modern networks

    E-Print Network [OSTI]

    Mellia, Marco

    , such as the enforcement of quality of service guarantees or traffic engineering, and of security issues such as intrusion use of encryption techniques, make the measurement, analysis and classifica- tion of Internet traffic are being published here: ``Targeting Spam Control on Middleboxes: Spam Detection Based on Layer-3 E- mail

  20. Predictability of road traffic and congestion in urban areas

    E-Print Network [OSTI]

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

    2014-01-01T23:59:59.000Z

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

  1. Traffic Light Protocol: WHITE Traffic Light Protocol: WHITE (information may be distributed without restriction, subject to copyright controls.)

    E-Print Network [OSTI]

    Thomas, Andrew

    the event for their gain. The Threats: Internet watch groups and cyber security experts have already potential cyber threats please visit the Center for Internet Security website at CISecurity.org. #12;Traffic Light Protocol: WHITE Traffic Light Protocol: WHITE (information may be distributed without

  2. 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.

  3. Adjusting the IP $\\beta$ Functions in RHIC

    E-Print Network [OSTI]

    Wittmer, W; Pilat, F; Ptitsyn, V; Van Zeijts, J

    2004-01-01T23:59:59.000Z

    The beta functions at the IP can be adjusted without perturbation of other optics functions via several approaches. In this paper we describe a scheme based on a vector knob, which assigns fixed values to the different tuning quadrupoles and scales them by a common multiplier. The values for the knob vector were calculated for a lattice without any errors using MADX. Previous studies for the LHC [1] have shown that this approach can meet the design goals. A specific feature of the RHIC lattice is the nested power supply system. To cope with the resulting problems a detailed response matrix analysis has been carried out and different sets of knobs were calculated and compared. The knobs were tested at RHIC during the 2004 run and preliminary results are discussed. Simultaneously a new approach to measure the beam sizes of both colliding beams at the IP, based on the tunability provided by the knobs, was developed and tested.

  4. Scheme for rapid adjustment of network impedance

    DOE Patents [OSTI]

    Vithayathil, John J. (3814 NE. 136th Pl., Portland, OR 97230)

    1991-01-01T23:59:59.000Z

    A static controlled reactance device is inserted in series with an AC electric power transmission line to adjust its transfer impedance. An inductor (reactor) is serially connected with two back-to-back connected thyristors which control the conduction period and hence the effective reactance of the inductor. Additional reactive elements are provided in parallel with the thyristor controlled reactor to filter harmonics and to obtain required range of variable reactance. Alternatively, the static controlled reactance device discussed above may be connected to the secondary winding of a series transformer having its primary winding connected in series to the transmission line. In a three phase transmission system, the controlled reactance device may be connected in delta configuration on the secondary side of the series transformer to eliminate triplen harmonics.

  5. Permanent-magnet multipole with adjustable strength

    DOE Patents [OSTI]

    Halbach, K.

    1982-09-20T23:59:59.000Z

    Two or more magnetically soft pole pieces are symmetrically positioned along a longitudinal axis to provide a magnetic field within a space defined by the pole pieces. Two or more permanent magnets are mounted to an external magnetically-soft cylindrical sleeve which rotates to bring the permanent magnets into closer coupling with the pole pieces and thereby adjustably control the field strength of the magnetic field produced in the space defined by the pole pieces. The permanent magnets are preferably formed of rare earth cobalt (REC) material which has a high remanent magnetic field and a strong coercive force. The pole pieces and the permanent magnets have corresponding cylindrical surfaces which are positionable with respect to each other to vary the coupling there between. Auxiliary permanent magnets are provided between the pole pieces to provide additional magnetic flux to the magnetic field without saturating the pole pieces.

  6. Permanent magnet multipole with adjustable strength

    DOE Patents [OSTI]

    Halbach, Klaus (Berkeley, CA)

    1985-01-01T23:59:59.000Z

    Two or more magnetically soft pole pieces are symmetrically positioned along a longitudinal axis to provide a magnetic field within a space defined by the pole pieces. Two or more permanent magnets are mounted to an external magnetically-soft cylindrical sleeve which rotates to bring the permanent magnets into closer coupling with the pole pieces and thereby adjustably control the field strength of the magnetic field produced in the space defined by the pole pieces. The permanent magnets are preferably formed of rare earth cobalt (REC) material which has a high remanent magnetic field and a strong coercive force. The pole pieces and the permanent magnets have corresponding cylindrical surfaces which are positionable with respect to each other to vary the coupling therebetween. Auxiliary permanent magnets are provided between the pole pieces to provide additional magnetic flux to the magnetic field without saturating the pole pieces.

  7. Elliptically polarizing adjustable phase insertion device

    DOE Patents [OSTI]

    Carr, R.

    1995-01-17T23:59:59.000Z

    An insertion device for extracting polarized electromagnetic energy from a beam of particles is disclosed. The insertion device includes four linear arrays of magnets which are aligned with the particle beam. The magnetic field strength to which the particles are subjected is adjusted by altering the relative alignment of the arrays in a direction parallel to that of the particle beam. Both the energy and polarization of the extracted energy may be varied by moving the relevant arrays parallel to the beam direction. The present invention requires a substantially simpler and more economical superstructure than insertion devices in which the magnetic field strength is altered by changing the gap between arrays of magnets. 3 figures.

  8. Remote adjustable focus Raman spectroscopy probe

    DOE Patents [OSTI]

    Schmucker, John E. (Hurt, VA); Blasi, Raymond J. (Harrison City, PA); Archer, William B. (Bethel Park, PA)

    1999-01-01T23:59:59.000Z

    A remote adjustable focus Raman spectroscopy probe allows for analyzing Raman scattered light from a point of interest external probe. An environmental barrier including at least one window separates the probe from the point of interest. An optical tube is disposed adjacent to the environmental barrier and includes a long working length compound lens objective next to the window. A beam splitter and a mirror are at the other end. A mechanical means is used to translated the prove body in the X, Y, and Z directions resulting in a variable focus optical apparatus. Laser light is reflected by the beam splitter and directed toward the compound lens objective, then through the window and focused on the point of interest. Raman scattered light is then collected by the compound lens objective and directed through the beam splitter to a mirror. A device for analyzing the light, such as a monochrometer, is coupled to the mirror.

  9. Cost estimates for near-term depolyment of advanced traffic management systems. Final report

    SciTech Connect (OSTI)

    Stevens, S.S.; Chin, S.M.

    1993-02-15T23:59:59.000Z

    The objective of this study is to provide cost est engineering, design, installation, operation and maintenance of Advanced Traffic Management Systems (ATMS) in the largest 75 metropolitan areas in the United States. This report gives estimates for deployment costs for ATMS in the next five years, subject to the qualifications and caveats set out in following paragraphs. The report considers infrastructure components required to realize fully a functional ATMS over each of two highway networks (as discussed in the Section describing our general assumptions) under each of the four architectures identified in the MITRE Intelligent Vehicle Highway Systems (IVHS) Architecture studies. The architectures are summarized in this report in Table 2. Estimates are given for eight combinations of highway networks and architectures. We estimate that it will cost between $8.5 Billion (minimal network) and $26 Billion (augmented network) to proceed immediately with deployment of ATMS in the largest 75 metropolitan areas. Costs are given in 1992 dollars, and are not adjusted for future inflation. Our estimates are based partially on completed project costs, which have been adjusted to 1992 dollars. We assume that a particular architecture will be chosen; projected costs are broken by architecture.

  10. A study and comparison of traffic assignment methods

    E-Print Network [OSTI]

    McIver, Jes David

    1956-01-01T23:59:59.000Z

    OF SCIENCE January 1956 Ma)or Sub]ect: Civil Engineering LIBRARY I S IS CIILLEOE OF TEXAS A STUDY AND COMPARISON OF TRAFFIC ASSIGNFIENT IIETHODS A Thesd. s by JES DAVID MCIVER Approved as to style and content by: p/ / ~ Chairman of Committee Head... Traffic Assignment by Brown's and Related Methods g8 LIST OF FIGURES Figure ~Ne ~Ttle Page Number Total . 'iotor Vehicle Travel in the United States Relation of Traffio on Raine Turnpike to That on U S 1, By Years 10 Traffic Diversion Curves...

  11. The impact of gasoline price changes on traffic safety: a time geography explanation Guangqing Chi a,

    E-Print Network [OSTI]

    Levinson, David M.

    The impact of gasoline price changes on traffic safety: a time geography explanation Guangqing Chi, United States a r t i c l e i n f o Keywords: Time geography Gasoline prices Traffic safety Traffic crashes Fatal crashes Space­time path a b s t r a c t The impact of gasoline price changes on traffic

  12. Behavioral Authentication of Server Flows James P. Early

    E-Print Network [OSTI]

    Rosenberg, Catherine P.

    Behavioral Authentication of Server Flows James P. Early Carla E. Brodley ¡ Catherine Rosenberg, in the presence of proxy servers that re-map port numbers or host services that have been compromised to act as backdoors or covert channels. We present an approach to classify server traffic based on decision trees

  13. Trade Adjustment Assistance Community College and Career Training...

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

    View a list of all current Trade Adjustment Assistance Community College and Career Training (TAACCCT) grant program awards containing Energy andor Manufacturing topics. This...

  14. adjustable speed ac: Topics by E-print Network

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

    of Input Voltage Sag and Unbalance on DC Link Inductor and Capacitor Stress in Adjustable Speed Drives Renewable Energy Websites Summary: 's transition into single-phase operation,...

  15. ac adjustable speed: Topics by E-print Network

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

    of Input Voltage Sag and Unbalance on DC Link Inductor and Capacitor Stress in Adjustable Speed Drives Renewable Energy Websites Summary: 's transition into single-phase operation,...

  16. Adjustment Data Report for Fiscal Years Prior to 2008 | Department...

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

    covers the adjustment data report for fiscal years prior to 2008. energydatareport.xls More Documents & Publications Reporting Guidance for Federal Agency Annual Report on Energy...

  17. ,"New York Dry Natural Gas Reserves Adjustments (Billion Cubic...

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

    Name","Description"," Of Series","Frequency","Latest Data for" ,"Data 1","New York Dry Natural Gas Reserves Adjustments (Billion Cubic Feet)",1,"Annual",2013 ,"Release...

  18. Optimization Online - Robust risk adjustment in health insurance

    E-Print Network [OSTI]

    Tengjiao Xiao

    2014-08-08T23:59:59.000Z

    Aug 8, 2014 ... Abstract: Risk adjustment is used to calibrate payments to health plans based on the relative health status of insured populations and helps ...

  19. UNCORRECTED 2 Stochastic adaptive control model for traffic signal systems

    E-Print Network [OSTI]

    Detwiler, Russell

    UNCORRECTED PROOF 1 2 Stochastic adaptive control model for traffic signal systems 3 X.-H. Yu a,1 , W.W. Recker b,* 4 a Department of Electrical Engineering, California Polytechnic State University

  20. Traffic Synchronization and Management for Energy Savings 5-18...

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

    the corridor, and it's seven or eight traffic signals. You can also see the camera on the signal pole. The next slide is another view of the area, where you can also see the camera...

  1. accidents traffic: Topics by E-print Network

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

    specifically, three distinct studies (more) OShields, Lara Lynn 2007-01-01 2 Does Daylight Savings Time Affect Traffic Accidents? Texas A&M University - TxSpace Summary: This...

  2. Decision support systems for automated terminal area air traffic control

    E-Print Network [OSTI]

    Pararas, John Demetrios

    1982-01-01T23:59:59.000Z

    This work studies the automation of the terminal area Air Traffic Management and Control (ATM/C) system. The ATM/C decision-making process is analyzed and broken down into a number of "automation functions". Each of these ...

  3. area traffic signal control: Topics by E-print Network

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

    technology, are to increase the safety and through-put of the existing highway by traffic automation. Advanced Vehicle Control... Huandra, Rusli 1998-01-01 102 Evaluation of...

  4. automated mixed traffic: Topics by E-print Network

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

    technology, are to increase the safety and through-put of the existing highway by traffic automation. Advanced Vehicle Control... Huandra, Rusli 1998-01-01 46 Cognitive Engineering...

  5. Dynamic Traffic Assignment Incorporating Commuters’ Trip Chaining Behavior

    E-Print Network [OSTI]

    Wang, Wen

    2012-10-19T23:59:59.000Z

    through a fixed-point problem. However, they treated the travel time on links ideally as constants without considering the dynamic traffic conditions. Heydecker and Polak (2006) developed a model of tour scheduling with equilibrium analysis on congested...

  6. Evaluation of teenage driver understanding of traffic control devices

    E-Print Network [OSTI]

    Ford, Garry Lee

    1999-01-01T23:59:59.000Z

    This research documents the evaluation of teenage graphics. drivers with regards to their understanding of 53 traffic control devices. A multiple choice survey was developed and administered to a group of teenage drivers between 15 and 18 years...

  7. airport traffic: Topics by E-print Network

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

    as a benchmark in the 4th International Planning Competition. Sebastian Trg; Jrg Hoffmann; Bernhard Nebel 2004-01-01 10 Towards a Market Mechanism for Airport Traffic Control...

  8. Notes and comments Impacts of traffic heterogeneity on roadside air

    E-Print Network [OSTI]

    Illinois at Chicago, University of

    a discrete traffic kinematic wave model formulated by Daganzo (1994, 1995). This model provides a cell-based solution, termed the cell-transmission (CT) recipe, to the kinematic wave model. It introduces a simplistic

  9. Development and Evaluation of a Novel Traffic Friendly Commuter Vehicle

    E-Print Network [OSTI]

    Minnesota, University of

    Development and Evaluation of a Novel Traffic Friendly Commuter Vehicle Rajesh Rajamani Department What solutions do researchers in the automotive industry and researchers in the vehicle dynamics lanes - Vehicles will travel together in closely- packed "platoons". Dedicated to automated vehicles

  10. Design and testing of a roadside traffic threat alerting mechanism

    E-Print Network [OSTI]

    Powale, Pallavi

    2013-01-01T23:59:59.000Z

    Every year, law enforcement officials, emergency personnel, and other workers stopped in traffic outside their vehicles are struck by inattentive drivers. Until now, most efforts to prevent these types of accidents have ...

  11. Characterization of network traffic on a local area network

    E-Print Network [OSTI]

    Suravarapu, Prasad Devi

    1995-01-01T23:59:59.000Z

    In this thesis we analyze network traffic on a local area network in an academic environment. We analyze the trace based on transport-level and network-level applications. Networks conversations are studied using the newly developed packet...

  12. Anti-eavesdropping communication layer to protect against traffic analysis

    E-Print Network [OSTI]

    Shen, Yiping

    2002-01-01T23:59:59.000Z

    In this thesis, we present unicast and multicast protocols to resist eavesdropping and traffic profiling of group communications. At the application layer, we propose a secret-sharing approach for the exchange of shared keys. That is, multicast...

  13. Optimization Online - Ship Traffic Optimization for the Kiel Canal

    E-Print Network [OSTI]

    Elisabeth Lübbecke

    2014-12-01T23:59:59.000Z

    Dec 1, 2014 ... This leads us to construct a fast online heuristic. The STCP ... In view of computational experiments on real traffic data expert planners approved that our combinatorial algorithm is well-suited for this decision support. With the ...

  14. 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.

  15. 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.

  16. 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...

  17. 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...

  18. Strategies for improving traffic operations at oversaturated signalized diamond interchanges

    E-Print Network [OSTI]

    Herrick, George Curtis

    1992-01-01T23:59:59.000Z

    to reduce both recurring and nonrecurring congestion. Incident detection and management systems can be implemented on freeways to decrease incident durations and reduce the resulting traffic congestion. Surveillance and control systems can be integrated... urban diamond interchanges, the traffic engineer needs to better understand these control strategies and seek new and innovative control strategies to more effectively address them. This research addressed two major objectives. The first objective...

  19. Design and analysis of an ATM network traffic security device

    E-Print Network [OSTI]

    Teodor, Dan Cristian

    1997-01-01T23:59:59.000Z

    and retransmit the network traffic from one ATM network switch output port. The Receivers queue the incoming data from the ATM network switch and present the data to the Analysis Modules in manageable pieces. The Analysis Modules capture the data from... at an exponential rate. With the continuation of this growth, the requirements of providing uniform security management will become more and more difficult to manage without occupying a significant portion of the network traffic capability available to the end...

  20. CSEM WP 120 Asymmetric Price Adjustment and Consumer Search

    E-Print Network [OSTI]

    California at Berkeley. University of

    CSEM WP 120 Asymmetric Price Adjustment and Consumer Search: An Examination of the Retail Gasoline of Economics November 13, 2003 Abstract It has been documented that retail gasoline prices respond more quickly theoretical model of asymmetric adjustment that empiri- cally matches observed retail gasoline price behavior

  1. Upgrade LCDs or TVs with improved ergonomic adjustability

    E-Print Network [OSTI]

    Saskatchewan, University of

    Highlights · Upgrade LCDs or TVs with improved ergonomic adjustability · Constant Force (CFTM) patented lift-and-pivot motion technology produces smooth adjustment · Neo-Flex LCD Stand is the only range of movement to your LCD display or TV with the Neo-Flex LCD Stand! This proven technology is now

  2. Risk adjusted control charts for health care Willem Albers

    E-Print Network [OSTI]

    Al Hanbali, Ahmad

    )) strongly suggest to apply SPC methods, in particular control charts, and we shall follow that line hereRisk adjusted control charts for health care monitoring Willem Albers Department of Applied membership can be used to adjust the basic negative binomial charts to the actual risk incurred. Attention

  3. Would Border Carbon Adjustments prevent carbon leakage and heavy industry

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    No 52-2013 Would Border Carbon Adjustments prevent carbon leakage and heavy industry halshs-00870689,version1-7Oct2013 #12;Would Border Carbon Adjustments prevent carbon leakage and heavy The efficiency of unilateral climate policies may be hampered by carbon leakage and competitiveness losses

  4. Adjustable, rapidly switching microfluidic gradient generation using focused travelling surface acoustic waves

    SciTech Connect (OSTI)

    Destgeer, Ghulam; Im, Sunghyuk; Hang Ha, Byung; Ho Jung, Jin; Ahmad Ansari, Mubashshir; Jin Sung, Hyung, E-mail: hjsung@kaist.ac.kr [Department of Mechanical Engineering, KAIST, 291 Daejak-ro, Yuseong-gu, Daejeon 305-701 (Korea, Republic of)

    2014-01-13T23:59:59.000Z

    We demonstrate a simple device to generate chemical concentration gradients in a microfluidic channel using focused travelling surface acoustic waves (F-TSAW). A pair of curved interdigitated metal electrodes deposited on the surface of a piezoelectric (LiNbO{sub 3}) substrate disseminate high frequency sound waves when actuated by an alternating current source. The F-TSAW produces chaotic acoustic streaming flow upon its interaction with the fluid inside a microfluidic channel, which mixes confluent streams of chemicals in a controlled fashion for an adjustable and rapidly switching gradient generation.

  5. T.T.T.Nguyen, G.Armitage, A Survey of Techniques for Internet Traffic Classification using Machine Learning A Survey of Techniques for Internet Traffic

    E-Print Network [OSTI]

    Armitage, Grenville

    of their various business goals. Traffic classification may be a core part of automated intrusion detection systemsT.T.T.Nguyen, G.Armitage, A Survey of Techniques for Internet Traffic Classification using Machine Learning A Survey of Techniques for Internet Traffic Classification using Machine Learning Thuy T.T. Nguyen

  6. 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.

  7. adjusted correlation analysis: Topics by E-print Network

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

    the quickest convergence to maxmin-fair states. Whereas Chiu-Jain model rests on a well modeling, it is still common to use Chiu-Jain model for comparison of binary adjust-...

  8. An asset-pricing view of external adjustment

    E-Print Network [OSTI]

    Pavlova, Anna

    Recent literature has argued that conventional measures of external sustainability – the trade balance and current account – are misleading because they omit capital gains on net foreign asset positions. We adjust the ...

  9. ADJUSTMENT COEFFICIENT FOR RISK PROCESSES IN SOME DEPENDENT CONTEXTS

    E-Print Network [OSTI]

    Maume-Deschamps, Véronique

    ADJUSTMENT COEFFICIENT FOR RISK PROCESSES IN SOME DEPENDENT CONTEXTS H. COSSETTE, E. MARCEAU, AND V, ruin theory, non para- metric estimation, weak dependence. . 1 #12;2 H. COSSETTE, E. MARCEAU, AND V

  10. ADJUSTMENT COEFFICIENT FOR RISK PROCESSES IN SOME DEPENDENT CONTEXTS

    E-Print Network [OSTI]

    Boyer, Edmond

    ADJUSTMENT COEFFICIENT FOR RISK PROCESSES IN SOME DEPENDENT CONTEXTS H. COSSETTE, E. MARCEAU, AND V" DOI : 10.1007/s11009-010-9182-y #12;2 H. COSSETTE, E. MARCEAU, AND V. MAUME-DESCHAMPS with UTu = u

  11. A Study of Adjustable Speed Drive Applications for Pumps

    E-Print Network [OSTI]

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

    1983-01-01T23:59:59.000Z

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

  12. Support assembly having three dimension position adjustment capabilities

    DOE Patents [OSTI]

    Cutburth, R.W.; House, F.A.

    1985-11-08T23:59:59.000Z

    An assembly for supporting an apparatus such as a microscope or laser to and against a planer surface is disclosed herein. This apparatus includes three specific arrangements for adjusting the positions of three segments of the apparatus so as to adjust the position of the overall apparatus with respect to the planer surface in the x-, y- and z-directions, where the x-direction and the y-direction are both parallel with the planer surface and perpendicular to one another and where the z-direction is perpendicular to the planer surface and the x- and y-directions. Each of two of the three arrangements includes its own means for providing x-, y- and z-adjustments (which includes rotation in the x, y plane) while it is only necessary for the third arrangement to provide adjustments in the z-direction.

  13. Pressure-flow reducer for aerosol focusing devices

    DOE Patents [OSTI]

    Gard, Eric (San Francisco, CA); Riot, Vincent (Oakland, CA); Coffee, Keith (Diablo Grande, CA); Woods, Bruce (Livermore, CA); Tobias, Herbert (Kensington, CA); Birch, Jim (Albany, CA); Weisgraber, Todd (Brentwood, CA)

    2008-04-22T23:59:59.000Z

    A pressure-flow reducer, and an aerosol focusing system incorporating such a pressure-flow reducer, for performing high-flow, atmosphere-pressure sampling while delivering a tightly focused particle beam in vacuum via an aerodynamic focusing lens stack. The pressure-flow reducer has an inlet nozzle for adjusting the sampling flow rate, a pressure-flow reduction region with a skimmer and pumping ports for reducing the pressure and flow to enable interfacing with low pressure, low flow aerosol focusing devices, and a relaxation chamber for slowing or stopping aerosol particles. In this manner, the pressure-flow reducer decouples pressure from flow, and enables aerosol sampling at atmospheric pressure and at rates greater than 1 liter per minute.

  14. Method for preparing membranes with adjustable separation performance

    DOE Patents [OSTI]

    Peterson, E.S.; Orme, C.J.; Stone, M.L.

    1995-01-31T23:59:59.000Z

    Methods for adjustable separation of solutes and solvents involve the combination of the use of a maximally swollen membrane and subsequent vacuum depressurization exerted on the permeate side of that membrane. By adjusting the extent of depressurization it is possible to separate solvent from solutes and solutes from each other. Improved control of separation parameters as well as improved flux rates characterize the present invention. 2 figs.

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

    E-Print Network [OSTI]

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

    2010-01-01T23:59:59.000Z

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

  16. advanced automation system air traffic control: Topics by E-print...

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

    technology, are to increase the safety and through-put of the existing highway by traffic automation. Advanced Vehicle Control... Huandra, Rusli 1998-01-01 56 Post: Air Traffic...

  17. Rethinking Internet Traffic Management: From Multiple Decompositions to a Practical Protocol

    E-Print Network [OSTI]

    Singh, Jaswinder Pal

    management spans congestion control (at end hosts), routing protocols (on routers), and traffic engineering (by network operators). Historically, this division of functionality evolved organically- tures of the algorithms, we construct TRUMP: a traffic man- agement protocol that is distributed

  18. Utilizing Correlations to Compress Time-Series in Traffic Monitoring Sensor Networks

    E-Print Network [OSTI]

    Martin, Ralph R.

    at £20bn. In urban areas, transport is the major source of carbon dioxide emissions, and traffic Cambridge testbed (Figure 1) and the spatio- temporal properties of a real traffic dataset. Section III

  19. A noise-tolerant traffic sign recognition method based on color images

    E-Print Network [OSTI]

    Ahmad, Akram

    1995-01-01T23:59:59.000Z

    Devising a pattern recognition methodology for traffic sign images captured in noisy outdoor environments poses a challenging problem. Such a method has to cope with occlusion noise as when part of the region of interest (in this case, the traffic...

  20. Methods and systems for detecting abnormal digital traffic

    DOE Patents [OSTI]

    Goranson, Craig A [Kennewick, WA; Burnette, John R [Kennewick, WA

    2011-03-22T23:59:59.000Z

    Aspects of the present invention encompass methods and systems for detecting abnormal digital traffic by assigning characterizations of network behaviors according to knowledge nodes and calculating a confidence value based on the characterizations from at least one knowledge node and on weighting factors associated with the knowledge nodes. The knowledge nodes include a characterization model based on prior network information. At least one of the knowledge nodes should not be based on fixed thresholds or signatures. The confidence value includes a quantification of the degree of confidence that the network behaviors constitute abnormal network traffic.

  1. An operational analysis of flashing traffic signal operation

    E-Print Network [OSTI]

    Benz, Robert Joseph

    1993-01-01T23:59:59.000Z

    AN OPERATIONAL ANALYSIS OF FLASHING TRAFFIC SIGNAL OPERATION A Thesis by ROBERT JOSEPH BENZ Submitted to the Office of Graduate Studies of Texas AEcM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE... street volumes are below 250 vph per approach and for main street volume of 500 vph per approach when the main/minor street volume ratio is above two. The volume range exceeds the Warrant 1 the minimum volume warrant for traffic signal installation...

  2. U-134: Apache Traffic Server Host Header Processing Flaw Lets Remote Users Deny Service

    Broader source: Energy.gov [DOE]

    A vulnerability was reported in Apache Traffic Server. A remote user can cause denial of service conditions.

  3. Boise Air Traffic Control Tower: High Performance and sustainable Building Guiding Principles Technical Assistance

    SciTech Connect (OSTI)

    Fowler, Kimberly M.; Goel, Supriya; Henderson, Jordan W.

    2013-09-01T23:59:59.000Z

    Overview of energy efficiency opportunities for new FAA tower construction using the Boise Air Traffic Control Tower as an example.

  4. Gasoline price effects on traffic safety in urban and rural areas: Evidence from Minnesota, 19982007

    E-Print Network [OSTI]

    Levinson, David M.

    Gasoline price effects on traffic safety in urban and rural areas: Evidence from Minnesota, 1998 February 2012 Received in revised form 3 May 2013 Accepted 24 May 2013 Keywords: Gasoline prices Traffic examines the role of gasoline prices in the occurrence of traffic crashes. However, no studies have

  5. Coupling traffic models on networks and urban dispersion models for simulating sustainable

    E-Print Network [OSTI]

    Ceragioli, Francesca

    models for modeling and testing different traffic scenarios, in order to define the impact on air quality it with the urban dispersion model Sirane. Keywords: urban air quality, macroscopic traffic models, road networks, pollutant dispersion models, traffic emissions control. AMS subject classification: 35L65, 35L67, 60K30, 90B

  6. Bounding Peer-to-Peer Upload Traffic in Client Networks Chun-Ying Huang

    E-Print Network [OSTI]

    Chen, Sheng-Wei

    interest. However, as the amount of peer-to- peer traffic increases, a network administrator would like for such network traffic. Second, as any one can develop their own protocols, even if network administratorsBounding Peer-to-Peer Upload Traffic in Client Networks Chun-Ying Huang National Taiwan University

  7. Realistic network traffic profile generation: theory and practice Antoine Varet1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , "realistic behavior" means to generate traffic similar to the traffic a network administrator can captureRealistic network traffic profile generation: theory and practice Antoine Varet1 & Nicolas Larrieu1-mail: nicolas.larrieu@enac.fr Abstract Network engineers and designers need additional tools to generate network

  8. weber, evans, moser, and newell Air Traffic Management Decision Support During Convective Weather

    E-Print Network [OSTI]

    Reuter, Martin

    · weber, evans, moser, and newell Air Traffic Management Decision Support During Convective WeatherTraffic Management Decision Support During Convective Weather Mark E. Weber, James E. Evans, William R. Moser algorithm. #12;· weber, evans, moser, and newell Air Traffic Management Decision Support During Convective

  9. Review of Urban Bicyclists' Intake and Uptake of Traffic-Related Air Pollution

    E-Print Network [OSTI]

    Bertini, Robert L.

    Review of Urban Bicyclists' Intake and Uptake of Traffic-Related Air Pollution ALEXANDER Y. BIGAZZI- clists may experience increased inhalation of traffic-related air pollutants. Bicyclists have two to five regarding urban bicyclists' intake and uptake of traffic-related air pollution and to identify key knowledge

  10. Review of Urban Bicyclists' Intake and Uptake of Traffic-Related Air Pollution

    E-Print Network [OSTI]

    Bertini, Robert L.

    1 Review of Urban Bicyclists' Intake and Uptake of Traffic-Related Air Pollution Alexander Y of Traffic-Related Air Pollution Abstract Bicycling as a mode of transportation is enjoying a boost in many while bicycling, bicyclists may experience increased inhalation of traffic-related air pollutants

  11. Automatic Model Classification of Measured Internet Traffic Yi Zeng and Thomas M. Chen

    E-Print Network [OSTI]

    Chen, Thomas M.

    issues for future work. II. MODEL-LIBRARY TRAFFIC CLASSIFICATION Many traffic models have been developed Model 2 module ... Model library Fig. 1. General model classification system In the general case with NAutomatic Model Classification of Measured Internet Traffic Yi Zeng and Thomas M. Chen Department

  12. Development of an actuated traffic control process utilizing real-time estimated volume feedbback

    E-Print Network [OSTI]

    Pacelli, Michael Joseph

    1999-01-01T23:59:59.000Z

    state of the system in the same units. The goal of this research was to develop an actuated traffic control process that could use estimated volumes in order to optimally operate the traffic signal in real- time in response to actual traffic demands...

  13. Air Traffic Complexity Resolution in Multi-Sector Planning Using CP

    E-Print Network [OSTI]

    Flener, Pierre

    Air Traffic Complexity Resolution in Multi-Sector Planning Using CP Pierre Flener1 Justin Pearson1 Programming for ATC & ATM, Brétigny (France), 2 December 2008 #12;Objective Air Traffic Complexity Complexity Resolution A CP Model Experiments Conclusion Outline 1 Objective 2 Air Traffic Complexity 3 Complexity

  14. Air traffic complexity and the interacting particle system method: An integrated approach for collision risk estimation

    E-Print Network [OSTI]

    Del Moral , Pierre

    Air traffic complexity and the interacting particle system method: An integrated approach explore the possibility of using air traffic complexity metrics to accelerate the Interacting Particle to assess the performance and impact of, e.g., possible modifications of the current air traffic management

  15. Adaptive Traffic-Based Techniques For Live Multimedia Streaming

    E-Print Network [OSTI]

    Adaptive Traffic-Based Techniques For Live Multimedia Streaming Gabriel-Miro Muntean and LiamMiro.Muntean@ucd.ie, Liam.Murphy@ucd.ie Abstract The growing number of multimedia stream transmissions done through the time-sensitive applications and especially the continuity of multimedia streaming. The paper presents

  16. Traffic Light Mapping and Detection Nathaniel Fairfield Chris Urmson

    E-Print Network [OSTI]

    Tomkins, Andrew

    by lines painted on the road, traffic lights indicate precedence at intersections, brake lights show when, are becoming common- place as part of commercial driver-assistance systems. With power steering, power brakes obstructions or false positives such as those induced by the brake lights of other vehicles. Happily, both

  17. Traffic Merging for Energy-Efficient Datacenter Networks

    E-Print Network [OSTI]

    Singh, Suresh

    Traffic Merging for Energy-Efficient Datacenter Networks Alessandro Carrega University of Genoa shown that datacenter net- works typically see loads of between 5% ­ 25% but the energy draw these networks more energy proportional ­ that is, the energy draw scales with the network load. We propose

  18. A Comparison of Unsupervised Learning Techniques for Encrypted Traffic Identification

    E-Print Network [OSTI]

    Zincir-Heywood, Nur

    the performance of five unsupervised clustering algorithms: Basic K-Means, Semi-supervised K-Means, DBSCAN, EM Algorithms, K-Means, DBSCAN, EM, Encrypted Traffic Identification. 1. Introduction An important part perspective we benchmark four unsupervised clustering techniques: basic K-Means, semi-supervised K- Means

  19. Traffic-Aware Video Streaming in Broadband Wireless Networks

    E-Print Network [OSTI]

    Ansari, Nirwan

    Traffic-Aware Video Streaming in Broadband Wireless Networks Ehsan Haghani and Nirwan Ansari Shyam in the Internet. Streaming real-time video in wireless networks is a challenging problem due to the stringent video quality at the end user in wireless networks. Our solution incorporates the characteristics

  20. Decentralized Traffic Management: A Synchronization-Based Intersection Control

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    the autonomous vehicle-agents to cross without stopping, i.e., in order to avoid congestions (delays) and energy by the vehicles while crossing the intersections, and the energy consumption due to the speed variations- portation systems. Autonomous vehicles are today considered as a promising approach to deal with traffic

  1. Computation Availability of Crossbar Systems in a Nonuniform Traffic Environment

    E-Print Network [OSTI]

    Atiquzzaman, Mohammed

    Computation Availability of Crossbar Systems in a Non­uniform Traffic Environment M. Atiquzzaman M Multiprocessor systems can provide higher performance, reliability, and availability than single processor performance and reliability are needed. Most previous studies have considered the performance and reliability/availability

  2. Evaluation of Non-intrusive Traffic Detection Technologies Phase III

    E-Print Network [OSTI]

    Minnesota, University of

    TPF-5(171) Evaluation of Non-intrusive Traffic Detection Technologies Ð Phase III #12 not intrude into pavement for installation. ·! Sensors above, below or to the side of the roadway qualify;Miovision #12;Miovision #12;Laser-based sensors #12;PEEK AxleLight #12;TIRTL #12;TIRTL #12;#12;#12;#12;

  3. AT&T Labs -Research Traffic Matrix Estimation

    E-Print Network [OSTI]

    Roughan, Matthew

    engineering (choosing OSPF weights) Reliability analysis Detecting anomalies Understanding traffic over limited availability ­ like a high zoom snap shot · special equipment needed (O&M expensive even if box to get routing matrices Gives the Routing Matrix A #12;AT&T Labs - Research Example App: reliability

  4. Measuring Bicyclists' Uptake of Traffic-Related Air Pollution

    E-Print Network [OSTI]

    Bertini, Robert L.

    Measuring Bicyclists' Uptake of Traffic-Related Air Pollution Alex Bigazzi PSU Transportation Seminar Feb. 28, 2014 Miguel Figliozzi Jim Pankow Wentai Luo Lorne Isabelle Urban Bicyclists' Pollution Uptake 1 #12;Bicycle & Health Promotion Public Health Exercise CrashesPollution Emissions Exposure/ Dose

  5. A categorical model for traffic incident likelihood estimation

    E-Print Network [OSTI]

    Kuchangi, Shamanth

    2007-04-25T23:59:59.000Z

    In this thesis an incident prediction model is formulated and calibrated. The primary idea of the model developed is to correlate the expected number of crashes on any section of a freeway to a set of traffic stream characteristics, so that a...

  6. Power Efficient Traffic Grooming in Optical WDM Networks

    E-Print Network [OSTI]

    @ncsu.edu Abstract--Power-awareness in networking attracts more at- tention as the trends in the energy consumption the objectives of minimizing the number of lightpaths and electronically routed traffic. Energy consumption has Department of Computer Science North Carolina State University Raleigh, NC 27695-8206 USA Email: rouskas

  7. Enforcing Liveness in Autonomous Traffic Management Tsz-Chiu Au

    E-Print Network [OSTI]

    Au, Tsz-Chiu

    - section Management (AIM). They showed that by leveraging the capacities of autonomous vehicles a First Come, First Served (FCFS) policy to direct autonomous vehicles through an intersection traditional traffic signals and stop signs, resulting in fuel savings since vehicles are less likely to stop

  8. Estimating Emissions in Latin America: An Alternative to Traffic Models

    E-Print Network [OSTI]

    Richner, Heinz

    Estimating Emissions in Latin America: An Alternative to Traffic Models Margarita Ossés de Eicker; Hans Hurni, Centre for Development and Environment (CDE), University of Bern, Switzerland Emissions allow precise estimations of these emissions but are too expensive for a broad application. A simplifed

  9. 1997 Hui Zhang 1 LIRA: Service Differentiation for Traffic

    E-Print Network [OSTI]

    Zhang, Hui

    1 1997 Hui Zhang 1 Carnegie Mellon LIRA: Service Differentiation for Traffic Aggregates With Large Spatial Granularities Ion Stoica Hui Zhang School of Computer Science Carnegie Mellon University 1997 Hui Simulation experiments l Conclusions and future work #12; 2 1997 Hui Zhang 3 Carnegie Mellon Motivation l

  10. 1997 Hui Zhang 1 LIRA: Service Differentiation for Traffic

    E-Print Network [OSTI]

    Zhang, Hui

    1 1997 Hui Zhang 1 Carnegie Mellon LIRA: Service Differentiation for Traffic Aggregates With Large Spatial Granularities Ion Stoica Hui Zhang School of Computer Science Carnegie Mellon University 1997 Hui Simulation experiments q Conclusions and future work #12;2 1997 Hui Zhang 3 Carnegie Mellon Motivation q

  11. PROOF COPY 004805HFS Molecular motors: a traffic cop within?

    E-Print Network [OSTI]

    Gross, Steven

    PROOF COPY 004805HFS PROOF COPY 004805HFS Molecular motors: a traffic cop within? M. A. Welte1 bidirectional, employing multiple plus- and minus-end directed motors. How cells regulate such transport in time approach to predict how much of transport can be understood just from our knowledge of the motors involved

  12. Impact of retailer's promotional activities on customer traffic

    E-Print Network [OSTI]

    Tasic, Ivan

    2007-09-17T23:59:59.000Z

    effect on store traffic that is comparable with the customer count effect of an average holiday. Some 55 percent of the positive long-run promotional activity effect is felt immediately, and the remaining 45 percent is spread over a five week long period...

  13. A Network-Processor-Based Traffic Splitter for Intrusion Detection

    E-Print Network [OSTI]

    Markatos, Evangelos P.

    1 A Network-Processor-Based Traffic Splitter for Intrusion Detection Ioannis Charitakis, Kostas processor and evaluated its performance using a combination of experimental evaluation and simulation. Our network-level security and protection, Network Processors, Intrusion Detection I. Charitakis and E. P

  14. Flow chamber

    DOE Patents [OSTI]

    Morozov, Victor (Manassas, VA)

    2011-01-18T23:59:59.000Z

    A flow chamber having a vacuum chamber and a specimen chamber. The specimen chamber may have an opening through which a fluid may be introduced and an opening through which the fluid may exit. The vacuum chamber may have an opening through which contents of the vacuum chamber may be evacuated. A portion of the flow chamber may be flexible, and a vacuum may be used to hold the components of the flow chamber together.

  15. Geological flows

    E-Print Network [OSTI]

    Yu. N. Bratkov

    2008-11-19T23:59:59.000Z

    In this paper geology and planetology are considered using new conceptual basis of high-speed flow dynamics. Recent photo technics allow to see all details of a flow, 'cause the flow is static during very short time interval. On the other hand, maps and images of many planets are accessible. Identity of geological flows and high-speed gas dynamics is demonstrated. There is another time scale, and no more. All results, as far as the concept, are new and belong to the author. No formulae, pictures only.

  16. TRAFFIC AND PARKING REGULATIONS 2013/2014 The following document comprises the University of Stirling's Traffic & Parking

    E-Print Network [OSTI]

    Little, Tony

    of Stirling's Traffic & Parking Regulations and sets out the rules for all individuals bringing a vehicle onto the University's Stirling campus. These rules are referred to as the Regulations in this document and may & display ticket unless they opt to park in a full parking space. 1.10 The University of Stirling is a data

  17. TRAFFIC AND PARKING REGULATIONS 2014/2015 The following document comprises the University of Stirling's Traffic & Parking

    E-Print Network [OSTI]

    Little, Tony

    of Stirling's Traffic & Parking Regulations and sets out the rules for all individuals bringing a vehicle onto the University's Stirling campus. These rules are referred to as the Regulations in this document and may & display ticket unless they opt to park in a full parking space. #12;2 1.9 The University of Stirling

  18. TI 176C Flow Rate Audits and Adjustment TABLE OF CONTENTS

    E-Print Network [OSTI]

    Fischer, Emily V.

    AND APPLICABILITY This standard operating procedure (SOP) describes the procedures for performing initial and final. The procedures followed in this situation are similar to those followed during site set up or annual maintenance, except that they are performed by the site operator rather than by field technicians. The procedure

  19. A peaks-over-threshold analysis of extreme traffic load effects on bridges Franziska Schmidt, Xiao Yi Zhou, Franois Toutlemonde

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    extreme traffic load or traffic load effect. These are: i. a half-normal curve fitted to the end1 A peaks-over-threshold analysis of extreme traffic load effects on bridges Franziska Schmidt focuses on modeling and estimating tail parameters of bridge traffic load effects by generalized Pareto

  20. Massive Scale Cyber Traffic Analysis: A Driver for Graph Database Research

    SciTech Connect (OSTI)

    Joslyn, Cliff A.; Choudhury, S.; Haglin, David J.; Howe, Bill; Nickless, William K.; Olsen, Bryan K.

    2013-06-19T23:59:59.000Z

    We describe the significance and prominence of network traffic analysis (TA) as a graph- and network-theoretical domain for advancing research in graph database systems. TA involves observing and analyzing the connections between clients, servers, hosts, and actors within IP networks, both at particular times and as extended over times. Towards that end, NetFlow (or more generically, IPFLOW) data are available from routers and servers which summarize coherent groups of IP packets flowing through the network. IPFLOW databases are routinely interrogated statistically and visualized for suspicious patterns. But the ability to cast IPFLOW data as a massive graph and query it interactively, in order to e.g.\\ identify connectivity patterns, is less well advanced, due to a number of factors including scaling, and their hybrid nature combining graph connectivity and quantitative attributes. In this paper, we outline requirements and opportunities for graph-structured IPFLOW analytics based on our experience with real IPFLOW databases. Specifically, we describe real use cases from the security domain, cast them as graph patterns, show how to express them in two graph-oriented query languages SPARQL and Datalog, and use these examples to motivate a new class of "hybrid" graph-relational systems.

  1. GLOBAL GLACIAL ISOSTATIC ADJUSTMENT: TARGET FIELDS FOR SPACE GEODESY

    E-Print Network [OSTI]

    Peltier, W. Richard

    GLOBAL GLACIAL ISOSTATIC ADJUSTMENT: TARGET FIELDS FOR SPACE GEODESY W.R. Peltier Department of Physics, University of Toronto, Toronto, Ontario, Canada M5S-1A7 peltier) and Sabadini and Peltier (1981) whose analysis was based upon the application of a homogeneous viscoelastic

  2. Respiratory and Cardiovascular Adjustments to Exercise in Reptiles

    E-Print Network [OSTI]

    Bennett, Albert F.

    challenges to the respiratory system of reptiles. Incrementing aerobic metabolism above resting levelsRespiratory and Cardiovascular Adjustments to Exercise in Reptiles T.T. GLEESON ' and A.F. BEN NETT all levels of activity (Fig. lb). The mechanism for an- aerobic energy production during exercise

  3. Sensitivity of health risk estimates to air quality adjustment procedure

    SciTech Connect (OSTI)

    Whitfield, R.G.

    1997-06-30T23:59:59.000Z

    This letter is a summary of risk results associated with exposure estimates using two-parameter Weibull and quadratic air quality adjustment procedures (AQAPs). New exposure estimates were developed for children and child-occurrences, six urban areas, and five alternative air quality scenarios. In all cases, the Weibull and quadratic results are compared to previous results, which are based on a proportional AQAP.

  4. Estimation in Covariate Adjusted Regression Damla Senturk1

    E-Print Network [OSTI]

    Sentürk, Damla

    confounder in a multiplicative fashion. One example is data collected for a study on diabetes, where adjusted for the effects of the confounders. One example is data collected for a study on diabetes (Willems for diabetes, including cholesterol and hypertension, and diagnostic variables, such as glycosolated hemoglobin

  5. Saving Energy by Adjusting Transmission Power in Wireless Sensor Networks

    E-Print Network [OSTI]

    Rowe, Neil C.

    Saving Energy by Adjusting Transmission Power in Wireless Sensor Networks Xiao Chen Department and communication areas. Energy-efficient communication is an important issue in WSNs because of the limited power propose methods to reduce communication energy by minimizing the total sensor trans- mission power

  6. On Adjusting Power to Defend Wireless Networks from Jamming

    E-Print Network [OSTI]

    Xu, Wenyuan

    1 On Adjusting Power to Defend Wireless Networks from Jamming Wenyuan Xu Department of Computer}@engr.sc.edu Abstract-- Wireless networks are susceptible to accidental or intentional radio interference. One way, we turn to examining the more complicated scenario consisting of a multi- hop wireless network. We

  7. Ihsan Yaniko No. 2013-022 ADJUSTABLE ROBUST PARAMETER ...

    E-Print Network [OSTI]

    BruijnC

    2013-03-21T23:59:59.000Z

    Mar 21, 2013 ... The goal of many experiments is to estimate the best solution for a ... Output may be univariate (a single or scalar response) or multivariate ... second type of inputs is not controlled by the users; e.g., demand in an inventory system. ...... practice, a part of the controllable factors can often be adjusted after ...

  8. OPERATIONAL BUDGET ADJUSTMENTS: FOCUSING RESOURCES TO 2016 AND BEYOND

    E-Print Network [OSTI]

    Saskatchewan, University of

    OPERATIONAL BUDGET ADJUSTMENTS: FOCUSING RESOURCES TO 2016 AND BEYOND EMMA LAKE KENDERDINE CAMPUS. This decision, while difficult, was necessary in a time of budget restraint. In addition to saving budget, in 2008 the Provost's Committee on Integrated Planning (PCIP) began providing an annual

  9. Bias adjustment of radar-based 3-hour precipitation accumulations

    E-Print Network [OSTI]

    Stoffelen, Ad

    projection of KNMI radar images 55 4 #12;Chapter 1 Introduction Since June 2003 a daily gauge is generated at 1400 UTC when the majority of the manual gauge observations have been reported. The radar-gaugeBias adjustment of radar-based 3-hour precipitation accumulations Iwan Holleman Technical Report

  10. Movement Planning and Simulation for Attitude Adjustment of a Drilling Robot

    E-Print Network [OSTI]

    Movement Planning and Simulation for Attitude Adjustment of a Drilling Robot Chengkun Wang planning method for attitude adjustment of a drilling robot is presented in this paper. The double eccentric discs normal adjustment mechanism is used in the robot to adjust the attitude of the drill axis

  11. Robust Background Subtraction with Foreground Validation for Urban Traffic Video

    SciTech Connect (OSTI)

    Cheung, S S; Kamath, C

    2004-01-15T23:59:59.000Z

    Identifying moving objects in a video sequence is a fundamental and critical task in many computer-vision applications. Background subtraction techniques are commonly used to separate foreground moving objects from the background. Most background subtraction techniques assume a single rate of adaptation, which is inadequate for complex scenes such as a traffic intersection where objects are moving at different and varying speeds. In this paper, we propose a foreground validation algorithm that first builds a foreground mask using a slow-adapting Kalman filter, and then validates individual foreground pixels by a simple moving object model, built using both the foreground and background statistics as well as the frame difference. Ground-truth experiments with urban traffic sequences show that our proposed algorithm significantly improves upon results using only Kalman filter or frame-differencing, and outperforms other techniques based on mixture of Gaussians, median filter, and approximated media filter.

  12. Hamiltonian traffic dynamics in microfluidic-loop networks

    E-Print Network [OSTI]

    Raphaël Jeanneret; Julien Piera-Vest; Denis Bartolo

    2011-09-28T23:59:59.000Z

    Recent microfluidic experiments revealed that large particles advected in a fluidic loop display long-range hydrodynamic interactions. However, the consequences of such couplings on the traffic dynamics in more complex networks remain poorly understood. In this letter, we focus on the transport of a finite number of particles in one-dimensional loop networks. By combining numerical, theoretical, and experimental efforts, we evidence that this collective process offers a unique example of Hamiltonian dynamics for hydrodynamically interacting particles. In addition, we show that the asymptotic trajectories are necessarily reciprocal despite the microscopic traffic rules explicitly break the time reversal symmetry. We exploit these two remarkable properties to account for the salient features of the effective three-particle interaction induced by the exploration of fluidic loops.

  13. On freeway traffic control by a lane closure

    E-Print Network [OSTI]

    Henderson, Donald Manson

    1971-01-01T23:59:59.000Z

    ON PREENAY TRAPPIC CONTROL BY. A LANE CLOSURE A Thesis by DONALD MANSON HENDERSON Submitted to the. Graduate College of Texas A&M University in partial fulfillment of the requirement. for the degree of MASTER OP SCIENCE Ma)or Suh]ect: Civil... Engineering August 1971 ON FREEWAY TRAFFIC CONTROL BY A LANE CLOSURE A Thesis by DONALD MANSON HENDERSON Approved as to style and content by: (Chairman of ommittee) (Head of Departmen (Member) (Member) (Member) ember) (Member) August 1971 ABSTRACT...

  14. Traffic Dynamics Prospectives: From Fundamental Diagram to Energy Balance

    E-Print Network [OSTI]

    Bertini, Robert L.

    Traffic Dynamics Prospectives: From Fundamental Diagram to Energy Balance R. Mahnke1 , Ch. Liebe, R) = vmax D m 2 - arctan xi D (13) Energy balance: d dt (Ekin(vi) + Epot(xi)) + i(xi, vi, vi+1) = 0 (14) with i as energy flux. 08.07.2008 Woods Hole ­ p.8/11 #12;Energy Balance with Energy Flux Energy balance

  15. Taxiway Aircraft Traffic Scheduling: A Model and Solution Algorithms

    E-Print Network [OSTI]

    Tian, Chunyu

    2012-10-19T23:59:59.000Z

    -known of these policies are the Ground Delay Progr am and Collaborative Decision Making (CDM). 15 The Ground Delay Program is currently implemented by the Federal Aviation Administration (FAA) to control air traffic when the acceptance rate of the destination... directions, they are referred as intersecting runways. In runway operations, the most important factors that need to be considered include wake vortex separations. Federal Aviation Administration categorizes the aircraft into three classes according...

  16. A Learning System for Discriminating Variants of Malicious Network Traffic

    SciTech Connect (OSTI)

    Beaver, Justin M [ORNL; Symons, Christopher T [ORNL; Gillen, Rob [ORNL

    2013-01-01T23:59:59.000Z

    Modern computer network defense systems rely primarily on signature-based intrusion detection tools, which generate alerts when patterns that are pre-determined to be malicious are encountered in network data streams. Signatures are created reactively, and only after in-depth manual analysis of a network intrusion. There is little ability for signature-based detectors to identify intrusions that are new or even variants of an existing attack, and little ability to adapt the detectors to the patterns unique to a network environment. Due to these limitations, the need exists for network intrusion detection techniques that can more comprehensively address both known unknown networkbased attacks and can be optimized for the target environment. This work describes a system that leverages machine learning to provide a network intrusion detection capability that analyzes behaviors in channels of communication between individual computers. Using examples of malicious and non-malicious traffic in the target environment, the system can be trained to discriminate between traffic types. The machine learning provides insight that would be difficult for a human to explicitly code as a signature because it evaluates many interdependent metrics simultaneously. With this approach, zero day detection is possible by focusing on similarity to known traffic types rather than mining for specific bit patterns or conditions. This also reduces the burden on organizations to account for all possible attack variant combinations through signatures. The approach is presented along with results from a third-party evaluation of its performance.

  17. Cooling Flows or Heating Flows?

    E-Print Network [OSTI]

    James Binney

    2003-10-08T23:59:59.000Z

    It is now clear that AGN heat cooling flows, largely by driving winds. The winds may contain a relativistic component that generates powerful synchrotron radiation, but it is not clear that all winds do so. The spatial and temporal stability of the AGN/cooling flow interaction are discussed. Collimation of the winds probably provides spatial stability. Temporal stability may be possible only for black holes with masses above a critical value. Both the failure of cooling flows to have adiabatic cores and the existence of X-ray cavities confirm the importance of collimated outflows. I quantify the scale of the convective flow that the AGN Hydra would need to drive if it balanced radiative inward flow by outward flow parallel to the jets. At least in Virgo any such flow must be confined to r<~20 kpc. Hydrodynamical simulations suggest that AGN outbursts cannot last longer than ~25 Myr. Data for four clusters with well studied X-ray cavities suggests that heating associated with cavity formation approximately balances radiative cooling. The role of cosmic infall and the mechanism of filament formation are briefly touched on.

  18. Adjustable Speed Drives as Applied to Centrifugal Pumps

    E-Print Network [OSTI]

    Jarc, D. A.; Robechek, J. D.; Connors, D. P.

    1982-01-01T23:59:59.000Z

    Required Power In addition to energy savings, which are discussed in detail later, operation at reduced pressures can result in longer pump seal life, reduced impeller wear, and less system vibration and noise. These benefits could provide additional... FLOW CONTROL TECHNIQUES Historically, centrifugal pumps have been driven by fixed speed A-C motors and reduced flow has been achieved by using control valves as shown in Figure 8. Closing the valve reduces the flow by increasing the friction...

  19. Adjustable Speed Drives as Applied to Centrifugal Pumps 

    E-Print Network [OSTI]

    Jarc, D. A.; Robechek, J. D.; Connors, D. P.

    1982-01-01T23:59:59.000Z

    the reduction in flow, the potential exists for significant energy reduction at reduced flows. 572 ESL-IE-82-04-109 Proceedings from the Fourth Industrial Energy Technology Conference, Houston, TX, April 4-7, 1982 13 12 11 10 w 9 :!: 8 i= Cl 7 z... curve, it is possible to achieve the same reduced flow achieved with a valve, but at significantly less pressure. 573 ESL-IE-82-04-109 Proceedings from the Fourth Industrial Energy Technology Conference, Houston, TX, April 4-7, 1982 Flow Control V...

  20. A VLSI Design Flow for Secure Side-Channel Attack Resistant ICs and Ingrid Verbauwhede1,2

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    A VLSI Design Flow for Secure Side-Channel Attack Resistant ICs Kris Tiri1 and Ingrid Verbauwhede1 VLSI design flow to create secure, side-channel attack (SCA) resistant integrated circuits. The design standard cell design flow. We discuss the basis for side-channel attack resistance and adjust the library

  1. Measurement of steam quality in two-phase critical flow

    E-Print Network [OSTI]

    Sinclair, John William

    1984-01-01T23:59:59.000Z

    flow orifice meter 4 Vapor-phase orifice meter 5 Steam quality adjustment valves 6 Critical flow test section 12 13 15 17 7 Two-phase mixture vent to atmosphere passage through test section 8 Fluke data logger 9 Condenser apparatus 18 21...-water 15 Steam quality as a function of vapor-phase Reynolds number for critical flow of steam-water . . . . . . . . , . . . . 48 16 Steam quality as a function of pressure measured upstream from critical flow orifice 17 Steam quality as a function...

  2. Stereoscopic PIV measurements of swirling flow entering a catalyst substrate

    SciTech Connect (OSTI)

    Persoons, T. [Trinity College Dublin, Mechanical Engineering Department, Parsons Building, Dublin 2 (Ireland); Vanierschot, M.; Van den Bulck, E. [Katholieke Universiteit Leuven, Department of Mechanical Engineering, Celestijnenlaan 300A, 3001 Leuven (Belgium)

    2008-09-15T23:59:59.000Z

    This experimental study investigates the stagnation region of a swirling flow entering an automotive catalyst substrate. A methodology is established using stereoscopic particle image velocimetry (PIV) to determine three-component velocity distributions up to 0.2 mm from the catalyst entrance face. In adverse conditions of strong out-of-plane velocity, PIV operating parameters are adjusted for maximum spatial correlation strength. The measurement distance to the catalyst is sufficiently small to observe radial flow spreading. A scaling analysis of the stagnation flow region provides a model for the flow uniformization as a function of the catalyst pressure drop. (author)

  3. Time-Dependent Traffic Flow Features at a Freeway Bottleneck Downstream of a Merge

    E-Print Network [OSTI]

    Bertini, Robert Lawrence

    1999-01-01T23:59:59.000Z

    upstream queue (Aglemang-Duah and Hall, 1991; Banks, 1990,both extremes (Agyemang-Duah and Hall, 1991; Hall and Hall,s location ( Agyemang-Duah and Hall, 1991; Koshi et al. ,

  4. E-Print Network 3.0 - air traffic flow Sample Search Results

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

    Dynamic System Models (LDSM... ). The dynamics of air ... Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and Utilization 47 Table...

  5. Time-Dependent Traffic Flow Features at a Freeway Bottleneck Downstream of a Merge

    E-Print Network [OSTI]

    Bertini, Robert Lawrence

    1999-01-01T23:59:59.000Z

    74 Upstream and downstream N-curves, Queen Elizabethconditions upstream and downstream of a freeway bottleneckfreely between those two downstream stations. Conversely,

  6. Estimating traffic flows and environmental effects of urban commercial supply in global city logistics decision support

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    logistics decision support Jesús González Feliu Laboratoire d'Economie des Transports Frédéric Henriot for the entire urban logistics system. The model shows the relation between several aspects of commercial on representative scenarios are proposed. Introduction City logistics studies the urban part of the logistic chain

  7. Development of a Web-based Emissions Reduction Calculator for Street Light and Traffic Light Retrofits

    E-Print Network [OSTI]

    Liu, Z.; Gilman, D.; Haberl, J. S.; Culp, C.

    2005-01-01T23:59:59.000Z

    , street lights and traffic lights represent one of the largest categories of electricity used by a city. By retrofitting the street lights with energy efficient lamps such as high pressure sodium and metal halide and traffic lights with light-emitting... diode (LED) traffic signals, a city 1 In the 2003 and 2005 Texas State legislative sessions, the emissions reductions legislation in Senate Bill 5 was modified by House bill 3235, and House bill 1365...

  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. An evaluation of the operating effectiveness of a computer-controlled traffic network

    E-Print Network [OSTI]

    De Steiguer, Allen Louis

    1969-01-01T23:59:59.000Z

    on relationships whith neazby detected links and known patterns of traffic movement control. iv Acknowled ements I wish to express my gratitide to those people wi. thout whose assistance this thesis would not have seen the light of day. My deepest... system of traffic control and to compare it to several conventional types of traffic signal control; * To evaluate various detector configurations for computer- controlled networks to determine the effects of different levels of detection intensity...

  10. Adjustable Speed AC Motor Drives-Applications Problems

    E-Print Network [OSTI]

    Enjeti, P.

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

  11. The Dynamics of Internet Traffic: Self-Similarity, Self-Organization, and Complex Phenomena

    E-Print Network [OSTI]

    Reginald D. Smith

    2010-09-05T23:59:59.000Z

    The Internet is the most complex system ever created in human history. Therefore, its dynamics and traffic unsurprisingly take on a rich variety of complex dynamics, self-organization, and other phenomena that have been researched for years. This paper is a review of the complex dynamics of Internet traffic. Departing from normal treatises, we will take a view from both the network engineering and physics perspectives showing the strengths and weaknesses as well as insights of both. In addition, many less covered phenomena such as traffic oscillations, large-scale effects of worm traffic, and comparisons of the Internet and biological models will be covered.

  12. A MACROSCOPIC TRAFFIC MODEL FOR ROAD NETWORKS WITH A

    E-Print Network [OSTI]

    Bastin, Georges

    ) and Hall and Agyemang-Duah (1991)). The flow decrease, which may range up to 15 %, has a considerable

  13. Flow preconditioner for electrostatic precipitator

    SciTech Connect (OSTI)

    Honacker, H.; Drlik, R.J.

    1980-01-01T23:59:59.000Z

    A flow preconditioner for an electrostatic precipitator removes particulate matter from a stream of polluted gas immediately after it passes through a tangential inlet at the lower end of a vertical cylindrical housing and straightens and divides the stream into laminations parallel to the axis of the housing. It comprises an annular ledge or choke ring extending inwardly from said housing above the inlet and an assembly of vanes above said ledge extending radially from the axis of the housing and angularly spaced apart. Each of said vanes has a flow receiving edge directed toward said inlet, a curved portion extending upwardly and away from said inlet, and a flat portion extending upwardly from said curved portion in a plane parallel to the housing axis. The curved portion of each vane defines a trough having a camber which gradually decreases along its span from the outer end of the vane towards the axis of the housng, together with means to vary the centrifugal flow distribution relative to the housing to render the preconditioner adjustable for various flow capacities.

  14. 4. Network Flows 4.2 The Network Simplex Algorithm

    E-Print Network [OSTI]

    Krumke, Sven O.

    Contents 4. Network Flows 4.2 The Network Simplex Algorithm 1 #12;Starting Solutions Extend Set EB as all new edges, EL as all old edges 2 #12;Network Simplex Part I Require: Network N = (V , E #12;Network Simplex Part II 6: Adjust x: xij := xij + if (i, j) C+ es xij - if (i, j) C- es xij

  15. EECBG Success Story: Getting Traffic Lights Talking to Improve Topeka's

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China U.S.ContaminationJulySavannah River Site forCommunity'Department ofDepartmentTraffic

  16. LED Traffic Lights Get Buy American Stamp | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy ChinaofSchaeferApril 1, 1999 InspectionVolunteersKarenThisDepartment ofLED traffic lights

  17. Energy-Efficient Variable-Flow Liquid Cooling in 3D Stacked Architectures

    E-Print Network [OSTI]

    Simunic, Tajana

    1 Energy-Efficient Variable-Flow Liquid Cooling in 3D Stacked Architectures Ayse K. Coskun , David not fully utilized. Thus, it is not energy-efficient to adjust the coolant flow rate based on the worst-case conditions, as this would cause an excess in pump power. For energy-efficient cooling, we propose a novel

  18. 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...

  19. Maximum Network Lifetime in Wireless Sensor Networks with Adjustable Sensing Ranges

    E-Print Network [OSTI]

    Wu, Jie

    1 Maximum Network Lifetime in Wireless Sensor Networks with Adjustable Sensing Ranges Mihaela problem in wireless sensor networks with adjustable sensing range. Communication and sensing consume Wireless sensor networks (WSNs) constitute the foundation of a broad range of applications related

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

    SciTech Connect (OSTI)

    Stefanovic, V.R.

    1995-09-01T23:59:59.000Z

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

  1. Sonde Adjust Value-Added Product Technical Report

    SciTech Connect (OSTI)

    Troyan, D

    2012-01-09T23:59:59.000Z

    The Sonde Adjust (SONDEADJUST) value-added product (VAP) creates a file that includes all fields from original Atmospheric Radiation Measurement Climate Research Facility (ARM Facility) radiosonde files and contains several value-added fields that provide adjustments related to well-known humidity issues. SONDEADJUST produces data that correct documented biases in radiosonde humidity measurements. Previous efforts towards applying some of these corrections are available via the discontinued PI product sgpsondecorr1miloC1. Unique fields contained within this datastream include smoothed original relative humidity, dry bias corrected relative humidity, and final corrected relative humidity. The smoothed RH field refines the relative humidity from integers-the resolution of the instrument-to fractions of a percent. This profile is then used to calculate the dry bias corrected field. The final correction fixes the time-lag problem and uses the dry-bias field as input into the algorithm. In addition to dry bias, solar heating is another correction that is encompassed in the final corrected RH field. Output from SONDEADJUST differs from the previous RH-corrected datastreams in important ways. First, all three types of ARM radiosondes-Vaisala RS-80, RS-90, and RS-92-are corrected using dedicated procedures and/or parameters. Second, the output variables include all of those found in the original radiosonde file: dry bulb temperature, dewpoint temperature, wind speed, wind direction, eastward wind component, northward wind component, wind status (a Vaisala-produced field used in conjunction with the Loran system), ascent rate, and original relative humidity. Additional humidity fields are smoothed relative humidity, dry biased corrected relative humidity, final ambient relative humidity, and scaled adjusted relative humidity. Third, quality control (QC) flags of the fields from the original radiosonde datastream are brought into the SONDEADJUST output file. Additional QC variables are created for the new fields.

  2. Kansas Dry Natural Gas Reserves Adjustments (Billion Cubic Feet)

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Building FloorspaceThousandWithdrawals0.0Decade Year-0Base7 3 2 1301Adjustments

  3. Kentucky Dry Natural Gas Reserves Adjustments (Billion Cubic Feet)

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Buildingto China (Million Cubic Feet) Kenai, AK LiquefiedCubicAdjustments

  4. Mississippi Dry Natural Gas Reserves Adjustments (Billion Cubic Feet)

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Buildingto China (Million Cubic Feet)Commercialper Thousand70 349252Adjustments

  5. Texas Dry Natural Gas Reserves Adjustments (Billion Cubic Feet)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122Commercial ConsumersThousandCubicSeparation 7,559 8,762 10,130Adjustments

  6. Alabama Dry Natural Gas Reserves Adjustments (Billion Cubic Feet)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National and Regional Data; Row: NAICS8) Distribution Category UC-950 Cost and Quality of Fuels forA 6 J 9 U B u o f l d w3,290 2,871Adjustments

  7. Alaska Dry Natural Gas Reserves Adjustments (Billion Cubic Feet)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National and Regional Data; Row: NAICS8) Distribution Category UC-950 Cost and Quality of Fuels forA 6 J 9 U B uYear Jan Feb MarAdjustments

  8. Colorado Dry Natural Gas Reserves Adjustments (Billion Cubic Feet)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,128 2,469 2,321Spain (Million Cubic 1.Year Jan3,302Adjustments

  9. West Virginia Dry Natural Gas Reserves Adjustments (Billion Cubic Feet)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122Commercial602 1,397 125 Q 69 (Million Cubic58 810Year Jan Feb39,28720 21Adjustments

  10. Wyoming Dry Natural Gas Reserves Adjustments (Billion Cubic Feet)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122Commercial602 1,397 125 Q 69 (MillionAdjustments (Billion Cubic Feet) Wyoming Dry

  11. U.S. Shale Proved Reserves Adjustments (Billion Cubic Feet)

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Buildingto17 34 44Year Jan Feb MarDecade Year-0 Year-1(Billion- -Adjustments

  12. Utah Dry Natural Gas Reserves Adjustments (Billion Cubic Feet)

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Buildingto17 34 44Year Jan Feb MarDecadeFour-Dimensional2009893 725Adjustments

  13. Oklahoma Dry Natural Gas Reserves Adjustments (Billion Cubic Feet)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5 Tables July 1996 Energy Information Administration Office ofthroughYear Jan Feb Mar Apr May Jun Jul9Thousand CubicAdjustments (Billion

  14. Pennsylvania Dry Natural Gas Reserves Adjustments (Billion Cubic Feet)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5 Tables July 1996 Energy Information Administration Office ofthroughYear Jan Feb Mar Apr MayYear Jan MonthlyCubic17 34 44Adjustments

  15. Traffic-related air pollution exposures and changes in heart rate variability in Mexico City: A panel study

    E-Print Network [OSTI]

    2013-01-01T23:59:59.000Z

    variability with traffic and air pollution in patients withAtherosclerosis and Air Pollution (MESA Air). Am J Epidemiolto traffic-related air pollution and the risk of coronary

  16. Pilot Perception and Use of ADS-B Traffic and Weather Services (TIS-B & FIS-B)

    E-Print Network [OSTI]

    Silva, Sathya

    2014-10-08T23:59:59.000Z

    Automatic Dependent Surveillance – Broadcast (ADS-B) is a central component of the NextGen air traffic control modernization program. It is intended to improve traffic surveillance capabilities by sharing accurate aircraft ...

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

    E-Print Network [OSTI]

    Lobyaem, Sonchai

    2006-10-30T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Lobyaem, Sonchai

    2006-10-30T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Bertini, Robert L.

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

  20. February 17, 2005 Traffic: See current conditions on all Valley freeways

    E-Print Network [OSTI]

    McGraw, Kevin J.

    ° Flagstaff 34° |Traffic Weather Site search| | | | | |Front Page Valley & State Sports Business Arizona Wheels Yes Ahwatukee Chandler Gilbert Glendale/Peoria Mesa Phoenix Scottsdale Southwest Valley Sun CitiesFebruary 17, 2005 Traffic: See current conditions on all Valley freeways PHOENIX 56° Tucson 53

  1. Switching Kalman Filter-Based Approach for Tracking and Event Detection at Traffic Intersections

    E-Print Network [OSTI]

    He, Sheng

    Switching Kalman Filter-Based Approach for Tracking and Event Detection at Traffic Intersections, and (ii) a simple event detection system using the results of a switching Kalman filter in combination outdoor traffic scenes. Keywords­ Event detection, switching Kalman filter, multi- ple cue-based tracking

  2. Roadmap: Aeronautics-Air Traffic Control -Bachelor of Science [AT-BS-AERN-ATC

    E-Print Network [OSTI]

    Sheridan, Scott

    Roadmap: Aeronautics- Air Traffic Control - Bachelor of Science [AT-BS-AERN-ATC] College of Applied This roadmap is a recommended semester-by-semester plan of study for this major. However, courses #12;Roadmap: Aeronautics- Air Traffic Control - Bachelor of Science [AT-BS-AERN-ATC] College

  3. Rapid Traffic Information Dissemination Using Named Data Los Angeles, CA, USA

    E-Print Network [OSTI]

    California at Los Angeles, University of

    Rapid Traffic Information Dissemination Using Named Data Lucas Wang UCLA Los Angeles, CA, USA lucas@us.toyota-itc.com Lixia Zhang UCLA Los Angeles, CA, USA lixia@cs.ucla.edu ABSTRACT This paper applies the Named Data traffic information dissemination application based on the data naming design from our previ- ous work

  4. Sources of Traffic Demand Variability and Use of Monte Carlo for Network Capacity Planning

    E-Print Network [OSTI]

    Cortes, Corinna

    to deal with rightfully angry business and finance teams: physical resources start depreciating the moment the sources of traffic demand variability and dive into Monte-Carlo methodology as an efficient way; throughput; traffic; concurrency; availability; node-and-link model; fast-time simulation; agent

  5. From Jammer to Gambler: Modeling and Detection of Jamming Attacks against Time-Critical Traffic

    E-Print Network [OSTI]

    Wang, Wenye

    From Jammer to Gambler: Modeling and Detection of Jamming Attacks against Time-Critical Traffic attacks. However, existing methods to characterize and detect jamming attacks cannot be applied directly. In this paper, we aim at modeling and detecting jamming attacks against time-critical traffic. We introduce

  6. Bigazzi, Figliozzi, and Clifton 1 Motorists' Exposure to Traffic-Related Air Pollution:1

    E-Print Network [OSTI]

    Bertini, Robert L.

    Bigazzi, Figliozzi, and Clifton 1 1 Motorists' Exposure to Traffic-Related Air Pollution:1 Modeling to traffic-related pollution. Large peak-period trip exposures are5 primarily the result of increased pollutants (3), which progressively degrade urban20 air quality (4). Because of coincident vehicle and human

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

    E-Print Network [OSTI]

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

  8. MaxMAC: a Maximally Traffic-Adaptive MAC Protocol for Wireless Sensor Networks

    E-Print Network [OSTI]

    Braun, Torsten

    consumption, researchers have proposed Energy-Efficient Medium Access (E2 -MAC) protocols that switch- traffic phases, while still exhibiting a high energy-efficiency in periods of sparse traffic. The paper-based scenarios require reasonable quality of service during periods of increased activity, and a high energy-efficiency

  9. Riemann Solver for a Kinematic Wave Traffic Model with Discontinuous Flux$

    E-Print Network [OSTI]

    Stockie, John

    Riemann Solver for a Kinematic Wave Traffic Model with Discontinuous Flux$ Jeffrey K. Wiensa class of kinematic wave15 traffic models that couple the conservation law Eq. (1) with a variety as 0. For certain initial data, the Riemann problem can give rise to zero waves that propagate

  10. IMPACT OF ADVERSE WEATHER ON TRAFFIC CONDITIONS ON AN AMERICAN HIGHWAY

    E-Print Network [OSTI]

    Bertini, Robert L.

    IMPACT OF ADVERSE WEATHER ON TRAFFIC CONDITIONS ON AN AMERICAN HIGHWAY Effect of the Sun Glare ANALYTIQUE NOM PRENOM AUTEUR AUFFRAY Benjamin TITRE DU TFE IMPACT OF AN ADVERSE WEATHER ON AN AMERICAN réf. biblio. : 42 MOTS CLÉS Sun, Glare, Highway, Visibility, Weather, Sunlight, Delay, Traffic

  11. Scheduling Automated Traffic on a Network of Arvind Giridhar and P.R. Kumar

    E-Print Network [OSTI]

    vehicles which are au- tomatically driven along smart highways and/or city roads [2], [3]. Such automation consider the problem of scheduling automated traffic in a city. Such automatic scheduling can improve algorithm and evaluate its performance through simulations. Index Terms: Traffic scheduling, smart vehicles

  12. Max-Weight Scheduling in Queueing Networks With Heavy-Tailed Traffic

    E-Print Network [OSTI]

    Markakis, Mihalis G.

    We consider the problem of scheduling in a single-hop switched network with a mix of heavy-tailed and light-tailed traffic and analyze the impact of heavy-tailed traffic on the performance of Max-Weight scheduling. As a ...

  13. A Machine Learning Approach for Efficient Traffic Classification Wei Li and Andrew W. Moore

    E-Print Network [OSTI]

    Hand, Steven

    . It serves as the input for practical solutions such as network monitoring, quality- of-service and intrusion-detection efficient monitoring, auditing and intelligent control over the traffic, but the success of the Internet has of encapsulated or encrypted traffic is increasing. Examples include proxies, VPN, tunneling, and applications

  14. A First Look at Cellular Machine-to-Machine Traffic Large Scale Measurement and Characterization

    E-Print Network [OSTI]

    Liu, Alex X.

    of businesses and applications such as telematics, smart metering, point-of-sale terminals, and home security Machine-to-Machine (M2M) commu- nication is fast becoming a market-changing force for a wide spectrum traffic resulting in bursty aggregate traffic volumes, and are less mobile compared to smart- phones

  15. Simulative Evaluation of a UMTS-based Car-to-Infrastructure Traffic Information System

    E-Print Network [OSTI]

    Breu, Ruth

    Simulative Evaluation of a UMTS-based Car-to-Infrastructure Traffic Information System (Invited-to-Infrastructure (C2I) applications. Based on our simulation framework, we evaluated a UMTS-based Traffic Information model of the simulated UMTS-based Car-to-Infrastructure communication system 3G networks are quite

  16. A review of statistical methods for the meteorological adjustment of tropospheric ozone

    E-Print Network [OSTI]

    Washington at Seattle, University of

    A review of statistical methods for the meteorological adjustment of tropospheric ozone Mary Lou adjustment of tropospheric ozone Mary Lou Thompson1 Joel Reynolds1 Lawrence H. Cox2 Peter Guttorp1 Paul D.larry@epamail.epa.gov ABSTRACT: A variety of statistical methods for meteorological adjustment of ozone have been proposed

  17. Abstract--We describe in this article a multiagent urban traffic simulation, as we believe individual-based modeling is

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of the network from purely geometric data, ESRI shapefiles. We then explain how we include traffic related data

  18. IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, VOL. 47, NO. 1, FEBRUARY 1998 321 A Real-Time Traffic Simulation System

    E-Print Network [OSTI]

    Chronopoulos, Anthony T.

    be used for real-time traffic control and drivers' guidance. Accurate mathematical and computer modeling of the collective behavior of the traffic, designing efficient control and management strategies, assessing the effects of roadway geometries, and in the design of new highway lanes. Traffic models can be characterized

  19. SITE-CONTROLLED SECURE MULTI-HOMING AND TRAFFIC ENGINEERING FOR IP Randall Atkinson Saleem Bhatti Steve Hailes

    E-Print Network [OSTI]

    Bhatti, Saleem N.

    SITE-CONTROLLED SECURE MULTI-HOMING AND TRAFFIC ENGINEERING FOR IP Randall Atkinson Saleem Bhatti Grid, including the global Internet. Similarly, the ability to provide traffic engineering for a site. Current approaches to site multi-homing and site traffic engineering (a) re- quire assistance from

  20. GT: picking up the truth from the ground for Internet traffic F. Gringoli, L. Salgarelli, M. Dusi

    E-Print Network [OSTI]

    California at San Diego, University of

    of Internet traffic modeling, firewall, and intrusion detection research requires traces where some ground. But DPI is ineffective when traffic is encrypted and ambiguous when different protocols exhibit similarGT: picking up the truth from the ground for Internet traffic F. Gringoli, L. Salgarelli, M. Dusi

  1. Time-resolved fluorescence decay measurements for flowing particles

    DOE Patents [OSTI]

    Deka, C.; Steinkamp, J.A.

    1999-06-01T23:59:59.000Z

    Time-resolved fluorescence decay measurements are disclosed for flowing particles. An apparatus and method for the measurement and analysis of fluorescence for individual cells and particles in flow are described, wherein the rapid measurement capabilities of flow cytometry and the robust measurement and analysis procedures of time-domain fluorescence lifetime spectroscopy are combined. A pulse-modulated CW laser is employed for excitation of the particles. The characteristics and the repetition rate of the excitation pulses can be readily adjusted to accommodate for fluorescence decays having a wide range of lifetimes. 12 figs.

  2. Programmable Differential Delay Circuit With Fine Delay Adjustment

    DOE Patents [OSTI]

    DeRyckere, John F. (Eau Claire, WI); Jenkins, Philip Nord (Eau Claire, WI); Cornett, Frank Nolan (Chippewa Falls, WI)

    2002-07-09T23:59:59.000Z

    Circuitry that provides additional delay to early arriving signals such that all data signals arrive at a receiving latch with same path delay. The delay of a forwarded clock reference is also controlled such that the capturing clock edge will be optimally positioned near quadrature (depending on latch setup/hold requirements). The circuitry continuously adapts to data and clock path delay changes and digital filtering of phase measurements reduce errors brought on by jittering data edges. The circuitry utilizes only the minimum amount of delay necessary to achieve objective thereby limiting any unintended jitter. Particularly, this programmable differential delay circuit with fine delay adjustment is designed to allow the skew between ASICS to be minimized. This includes skew between data bits, between data bits and clocks as well as minimizing the overall skew in a channel between ASICS.

  3. Adjustable Nonlinear Springs to Improve Efficiency of Vibration Energy Harvesters

    E-Print Network [OSTI]

    S. Boisseau; G. Despesse; B. Ahmed Seddik

    2015-06-01T23:59:59.000Z

    Vibration Energy Harvesting is an emerging technology aimed at turning mechanical energy from vibrations into electricity to power microsystems of the future. Most of present vibration energy harvesters are based on a mass spring structure introducing a resonance phenomenon that allows to increase the output power compared to non-resonant systems, but limits the working frequency bandwidth. Therefore, they are not able to harvest energy when ambient vibrations' frequencies shift. To follow shifts of ambient vibration frequencies and to increase the frequency band where energy can be harvested, one solution consists in using nonlinear springs. We present in this paper a model of adjustable nonlinear springs (H-shaped springs) and their benefits to improve velocity-damped vibration energy harvesters' (VEH) output powers. A simulation on a real vibration source proves that the output power can be higher in nonlinear devices compared to linear systems (up to +48%).

  4. Observing and modeling Earths energy flows

    SciTech Connect (OSTI)

    Stevens B.; Schwartz S.

    2012-05-11T23:59:59.000Z

    This article reviews, from the authors perspective, progress in observing and modeling energy flows in Earth's climate system. Emphasis is placed on the state of understanding of Earth's energy flows and their susceptibility to perturbations, with particular emphasis on the roles of clouds and aerosols. More accurate measurements of the total solar irradiance and the rate of change of ocean enthalpy help constrain individual components of the energy budget at the top of the atmosphere to within {+-}2 W m{sup -2}. The measurements demonstrate that Earth reflects substantially less solar radiation and emits more terrestrial radiation than was believed even a decade ago. Active remote sensing is helping to constrain the surface energy budget, but new estimates of downwelling surface irradiance that benefit from such methods are proving difficult to reconcile with existing precipitation climatologies. Overall, the energy budget at the surface is much more uncertain than at the top of the atmosphere. A decade of high-precision measurements of the energy budget at the top of the atmosphere is providing new opportunities to track Earth's energy flows on timescales ranging from days to years, and at very high spatial resolution. The measurements show that the principal limitation in the estimate of secular trends now lies in the natural variability of the Earth system itself. The forcing-feedback-response framework, which has developed to understand how changes in Earth's energy flows affect surface temperature, is reviewed in light of recent work that shows fast responses (adjustments) of the system are central to the definition of the effective forcing that results from a change in atmospheric composition. In many cases, the adjustment, rather than the characterization of the compositional perturbation (associated, for instance, with changing greenhouse gas concentrations, or aerosol burdens), limits accurate determination of the radiative forcing. Changes in clouds contribute importantly to this adjustment and thus contribute both to uncertainty in estimates of radiative forcing and to uncertainty in the response. Models are indispensable to calculation of the adjustment of the system to a compositional change but are known to be flawed in their representation of clouds. Advances in tracking Earth's energy flows and compositional changes on daily through decadal timescales are shown to provide both a critical and constructive framework for advancing model development and evaluation.

  5. Energy and Reliability Considerations For Adjustable Speed Driven Pumps

    E-Print Network [OSTI]

    Casada, D.

    -frictional. In fact, some fluid systems are dominated by static, rather than frictional head. When there is static head in a fluid system, the system no longer follows the same rule that head is proportional to flow rate squared. Instead, there is a constant term...

  6. Design of a Host Traffic Management system for Hard Real Time networks

    E-Print Network [OSTI]

    Krishna Moorthy, Jayasankar

    1997-01-01T23:59:59.000Z

    MODEL A. What Is NetEx? . B. NetEx Block Schematic . . C. The Host Traffic Manager D. The Network Traffic Manager (NTM) III DESIGN OF THE HOST TRAFFIC MANAGER A. Design Requirements B. Design Methodology C. HTM ? System Layout D. Design... of Future Work REFERENCES . 7 7 9 10 12 12 13 16 17 22 25 27 29 32 32 32 36 37 39 39 41 43 45 CHAPTER Page VITA 47 LIST OF FIGURES FIGURE Page Decomposition of Connection into Servers ISO OSI Model NetEx Block Schematic I...

  7. Reservoir analysis using production decline data and adjusted time

    E-Print Network [OSTI]

    McCray, Thomas Lee

    1990-01-01T23:59:59.000Z

    -pressure approximation which provides a straight- line relationship and allows us to determine shape factor and reserves. In the following section we verify this relationship with simulated data. VERIFICATION OF VARIABLE-PRESSURE APPROXIMATION WITH SIMULATED DATA We... = Dtt (37) Combining Eqs 35 and 37 45 (3g) This provides us with an analytical approach to decline curve analysis. Initial reserves in place can be determined by type curve matching post-transient flow data (which will match the empirical solutions...

  8. Use of Structure as a Basis for Abstraction in Air Traffic Control

    E-Print Network [OSTI]

    Davison, H. J.

    The safety and efficiency of the air traffic control domain is highly dependent on the capabilities and limitations of its human controllers. Past research has indicated that structure provided by the airspace and procedures ...

  9. Preemption strategy for traffic signals at intersections near highway-railroad grade crossings

    E-Print Network [OSTI]

    Cho, Hanseon

    2004-09-30T23:59:59.000Z

    Because the operational characteristics of signalized intersections near highway-railroad grade crossings (IHRGCs) are different from those of signalized intersections located elsewhere in the traffic system, standard operational strategies do...

  10. E-Print Network 3.0 - air traffic Sample Search Results

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

    "A day in the life of air traffic in the U.S.," shows ... Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and Utilization 2 Table of...

  11. E-Print Network 3.0 - air traffic operations Sample Search Results

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

    "A day in the life of air traffic in the U.S.," shows ... Source: NASA - Center-TRACTION Automation System (CTAS) Collection: Energy Storage, Conversion and Utilization 2 Table of...

  12. TRAFFIC-RELATED AIR POLLUTION. A PILOT EXPOSURE1 ASSESSMENT IN BEIRUT, LEBANON2

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    the use of biomarkers of exposure to benzene and BD. Personal benzene, toluene,30 ethylbenzene, and xylene as biomarker of exposure to BD in humans. Traffic policemen, who are exposed to46 hal-00914713,version1-25Jan

  13. Evaluation of TexSIM for modeling traffic behavior at diamond interchanges

    E-Print Network [OSTI]

    Meadors, Allison Christine Cherry

    1995-01-01T23:59:59.000Z

    traffic behavior at signalized diamond interchanges. To evaluate TexSIM 2.0 for simulating and providing accurate descriptive measures of performance for pretimed and actuated diamond interchanges, model outputs were compared to field data collected from...

  14. Evolution of domestic traffic and fares at the top 200 US airports between 1990 and 2008

    E-Print Network [OSTI]

    Ben Abda, Mehdi

    2010-01-01T23:59:59.000Z

    The main objective of this thesis is to analyze the evolution of domestic Origin- Destination (O-D) traffic and fares at the Top 200 airports in the United States between 1990 and 2008. The impetus behind this research is ...

  15. Investigating conformance monitoring issues in air traffic control using fault detection approaches

    E-Print Network [OSTI]

    Reynolds, Tom George, 1972-

    2004-01-01T23:59:59.000Z

    In order to maintain Air Traffic Control (ATC) system safety, security and efficiency, conformance monitoring must be performed to ensure that aircraft adhere to their assigned clearances. New Decision Support Tools (DSTs), ...

  16. Developing a methodology to account for commercial motor vehicles using microscopic traffic simulation models

    E-Print Network [OSTI]

    Schultz, Grant George

    2004-09-30T23:59:59.000Z

    with an increased availability of CMV data. The primary sources of these data are automatic vehicle classification (AVC) and weigh-in-motion (WIM). Microscopic traffic simulation models have been used extensively to model the dynamic and stochastic nature...

  17. Assessment of older driver understanding of certain traffic control devices in Texas

    E-Print Network [OSTI]

    Hulett, Stephanie Renee

    2000-01-01T23:59:59.000Z

    The purpose of this research was to assess older Texas drivers on their understanding of nine traffic control devices and identify the devices that are misunderstood by people 65 years and older. Additionally, older driver education programs were...

  18. Air Traffic Control and Alert Agent Henry Hexmoor and Tim Heng

    E-Print Network [OSTI]

    Hexmoor, Henry

    Air Traffic Control and Alert Agent Henry Hexmoor and Tim Heng University of North Dakota Grand Forks, North Dakota, USA {hexmoor,heng}@cs.und.edu ABSTRACT This paper presents an agent program

  19. An alternative to constant rate link padding for the prevention of traffic analysis

    E-Print Network [OSTI]

    Graham, Bryan Wayne

    2002-01-01T23:59:59.000Z

    approach to prevent traffic analysis has always been constant rate link padding. However, the effectiveness of this method when an adversary has access to advanced monitoring equipment and knowledge of statistical analysis has not been addressed...

  20. Aviation safety. Serious problems concerning the Air Traffic Control work force

    SciTech Connect (OSTI)

    Not Available

    1986-03-01T23:59:59.000Z

    This report provides the results of an extensive study of the air traffic control work force and includes conclusions and recommendations. The report shows that the Federal Aviation Administration (FAA) has not met its goals for fully qualified (FPL) controllers at many major facilities, and that the growth in air traffic activity as caused controller work load to reach a point where controllers are stretched too thin. Controllers and their supervisors have expressed serious concerns about their ability to continue to maintain the proper margin of safety. We recommend that FAA impose restrictions on air traffic until both the number of FPL controllers and overtime requirements meet FAA's goals. Problems relating to both the number of FPLs and overtime are most acute at the air route traffic control centers and FAA must recognize this in deciding what restrictions to impose.

  1. Combining Routing and Traffic Data for Detection of IP Forwarding Anomalies

    E-Print Network [OSTI]

    Roughan, Matthew

    Monitoring, C.4 Reliability, availability, and serviceability. General Terms: Algorithms, Management, Reliability. Keywords: Network anomaly detection, routing, BGP, traffic, SNMP. ABSTRACT IP forwarding anomalies, triggered by equipment failures, imple- mentation bugs, or configuration errors, can

  2. AC&N Incident Reporting The Colorado School of Mines takes all complaints about inappropriate traffic

    E-Print Network [OSTI]

    . If the attack is currently in progress, you should expect the traffic to stop shortly after we have verified are not currently experiencing problems, please send your report via email. · For more information about contacting

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

    E-Print Network [OSTI]

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

    2007-01-01T23:59:59.000Z

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

  4. DEVELOPING VISUALIZATION TOOLS FOR THE DESIGN OF AIR TRAFFIC CONTROL EXPERIMENTS

    E-Print Network [OSTI]

    Cummings, Mary "Missy"

    for those human factors researchers and practitioners designing experiments. Designing an experimentDEVELOPING VISUALIZATION TOOLS FOR THE DESIGN OF AIR TRAFFIC CONTROL EXPERIMENTS ABSTRACT While, little attention has been paid to developing visualization tools for human factors researchers designing

  5. Optimal Vehicle Routing with Real-Time Traffic Information Seongmoon Kim1

    E-Print Network [OSTI]

    Lewis, Mark E.

    to accidents, bad weather, traffic con- gestion, etc., trucks hauling time-sensitive freight build "buffer time cost. Indeed a truck parked at the origin is less expensive than one that is in use. Moreover

  6. Real-time trajectory optimization and air traffic control simulation for noise abatement approach procedures

    E-Print Network [OSTI]

    Zou, Feng, 1977-

    2004-01-01T23:59:59.000Z

    Aircraft noise is a major obstacle to the growth of aviation. This thesis presents an adaptive onboard real-time optimization algorithm and an Air Traffic Control simulation model that can minimize the aircraft approach ...

  7. Assessment of durability performance of "Early-Opening-to-Traffic" Portland Cement Concrete pavement and patches

    E-Print Network [OSTI]

    Shrestha, Pradhumna Babu

    1999-01-01T23:59:59.000Z

    This study relates the assessment of durability to ''early-opening-to-traffic'' (EOT) portland cement concrete (PCC). Several factors were identified relative to the performance of EOT PCC. Each of these factors was considered in terms of freeze...

  8. Throughput Optimal Scheduling Over Time-Varying Channels in the Presence of Heavy-Tailed Traffic

    E-Print Network [OSTI]

    Jagannathan, Krishna

    We study the problem of scheduling over time varying links in a network that serves both heavy-tailed and light tailed traffic. We consider a system consisting of two parallel queues, served by a single server. One of the ...

  9. Throughput Optimal Scheduling in the Presence of Heavy-Tailed Traffic

    E-Print Network [OSTI]

    Jagannathan, Krishna Prasanna

    We investigate the tail behavior of the steady-state queue occupancies under throughput optimal scheduling in the presence of heavy-tailed traffic. We consider a system consisting of two parallel queues, served by a single ...

  10. Real-time analysis of aggregate network traffic for anomaly detection

    E-Print Network [OSTI]

    Kim, Seong Soo

    2005-08-29T23:59:59.000Z

    The frequent and large-scale network attacks have led to an increased need for developing techniques for analyzing network traffic. If efficient analysis tools were available, it could become possible to detect the attacks, anomalies...

  11. 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

    train volumes. The majority of grade crossings will continue to have only signs and markings that provide passive warning to drivers because it is not economically feasible to provide active control at each grade crossing. Thus, enhanced traffic control...

  12. Evaluation of traffic operations at diamond interchanges using advanced actuated control

    E-Print Network [OSTI]

    Koonce, Peter John Vincent

    1998-01-01T23:59:59.000Z

    This thesis documents an operational analysis of ographics. advanced actuated traffic control at signalized diamond interchanges. The study attempts to determine the benefits a "flexible'' phasing strategy provides to the interchange. Flexible...

  13. Analysis of seasonal and day-of-week traffic patterns at national parks

    E-Print Network [OSTI]

    Liggett, Lindsay Elizabeth

    2009-05-15T23:59:59.000Z

    The National Park Service (NPS) is currently contemplating the implementation of a system-wide traffic monitoring program. While several of the national parks within this network collect continuous vehicle data at multiple stations within each park...

  14. Multi-step-ahead prediction of MPEG-coded video source traffic using empirical modeling techniques 

    E-Print Network [OSTI]

    Gupta, Deepanker

    2006-04-12T23:59:59.000Z

    In the near future, multimedia will form the majority of Internet traffic and the most popular standard used to transport and view video is MPEG. The MPEG media content data is in the form of a time-series representing ...

  15. Airport surface traffic optimization and simulation in the presence of uncertainties

    E-Print Network [OSTI]

    Lee, Hanbong

    2014-01-01T23:59:59.000Z

    Surface traffic congestion causes significant taxi delays and long queues for takeoffs at busy airports, increasing operational and environmental costs. These impacts may be mitigated by optimizing runway and taxiway ...

  16. Validation of the Highway Performance Monitoring System for forecasting levels of traffic

    E-Print Network [OSTI]

    Bray, Rebecca Anne

    1995-01-01T23:59:59.000Z

    This thesis documents the results and studies conducted when determining the accuracy of the Texas Department of Transportation (TXDOT) methodology of forecasting future levels of traffic demand. The data that was used was the Federal Highway...

  17. A continuous traffic study - estimation of population parameters and the variance of the estimated parameters

    E-Print Network [OSTI]

    Dresser, George Brayton

    1969-01-01T23:59:59.000Z

    are pre- ;ected. The operating ratio is defined and its use for regulatory pur- poses discussed. Procedures for the estimation of operating ratios from CTS and cost data are explained. An approximate formula for the variance of the ratio of two random... 31 TEXAS INTRASTATE TRAFFIC 1967 (Operating Ratio by Actual Weight of Shipment). . 32 TEXAS INTRASTATE TRAFFIC 1967 (Operating Ratio by Number Miles Shipm nt Moved) 33 CHAPTER I STATEMENT QF THE PRGBLEM 1. 1 Introduction The Southwestern...

  18. Performance Analysis of Transactional Traffic in Mobile Ad-hoc Networks

    E-Print Network [OSTI]

    Cheng, Yufei

    2014-05-31T23:59:59.000Z

    are expected to present different characteristics and pose different requirements for transport protocols as well as routing protocols. The canonical transport protocol to carry transactional traffic is HTTP on TCP, there are several drawbacks for TCP to better... contribution from the ResiliNets group we have mod- eled DSDV routing protocol [19], 3D–Gauss-Markov mobility model [20], TDMA MAC protocol, DSR routing protocol [21], and HTTP traffic generator [22], TCP Westwood and Westwood+ [23]. This thesis demonstrates...

  19. Adjustable Shock Test Sled for Haversine Pulses at 250 fps

    SciTech Connect (OSTI)

    Troy Hartwig; Brent Hower; Aaron Seaholm

    2008-05-05T23:59:59.000Z

    New test requirements were developed by Sandia National Laboratory to simulate a regime of shock testing not previously performed at the Kansas City Plant operated by Honeywell Federal Manufacturing & Technologies. These environments were unique in that they involved amplitude of shock >1000g with relatively long pulse durations (greater 5 ms but less than 10 ms) and involved velocity changes up to 235 ft/sec. Ten months were available to develop, design, manufacture and prove-in this new capability. We designed a new shock sled to deliver this new family of shock environments in a laboratory test. The performance range of the new sled includes five specific shocks (1000 g – 8 ms, 1300 - 6 ms, 1500 g – 5.4 ms, 1950 g – 6 ms, 2250 g – 5.4 ms; all haversine shaped), and it also incorporates adjustability to accommodate new shocks within this range. These shock environments result in velocity changes ranging from 160 fps to 250 fps. The test sled accommodates test articles weighing up to 20 lbs and measuring up to 10” along any axis.

  20. Apparatus for adjustably controlling valve movement and fuel injection

    SciTech Connect (OSTI)

    Miller, C.R.; Shyu, T.P.; Weber, J.R.

    1993-08-24T23:59:59.000Z

    Apparatus is described for adjustably controlling valve movement and fuel injection of an engine having at least one fuel injection system, one exhaust valve system, one intake valve system, a microprocessor controller for receiving input signals and delivering engine controlling electrical signals, and a liquid pressure system, comprising: a single piezoelectric motor connectable to the microprocessor controller and the liquid pressure system and being adapted to receive engine controlling electrical signals from the microprocessor and controllably delivering pressurized liquid signals to the liquid pressure system in response to the received signal; and a spool valve having a single spool, the valve having a plurality of inlets and outlets and being connectable to the liquid pressure system for receiving pressurized liquid signals therefrom and controllably moving the single spool of the spool valve and delivering valve and injection controlling signals to the valve systems and injector system and controlling both valve movement and fuel injection responsive to engine controlling electrical signals received by the piezoelectric motor.

  1. Capacitor charging FET switcher with controller to adjust pulse width

    DOE Patents [OSTI]

    Mihalka, Alex M. (Livermore, CA)

    1986-01-01T23:59:59.000Z

    A switching power supply includes an FET full bridge, a controller to drive the FETs, a programmable controller to dynamically control final output current by adjusting pulse width, and a variety of protective systems, including an overcurrent latch for current control. Power MOSFETS are switched at a variable frequency from 20-50 kHz to charge a capacitor load from 0 to 6 kV. A ferrite transformer steps up the DC input. The transformer primary is a full bridge configuration with the FET switches and the secondary is fed into a high voltage full wave rectifier whose output is connected directly to the energy storage capacitor. The peak current is held constant by varying the pulse width using predetermined timing resistors and counting pulses. The pulse width is increased as the capacitor charges to maintain peak current. A digital ripple counter counts pulses, and after the desired number is reached, an up-counter is clocked. The up-counter output is decoded to choose among different resistors used to discharge a timing capacitor, thereby determining the pulse width. A current latch shuts down the supply on overcurrent due to either excessive pulse width causing transformer saturation or a major bridge fault, i.e., FET or transformer failure, or failure of the drive circuitry.

  2. Adjustment, Political Transition, and the Organization of Military Power in Nigeria

    E-Print Network [OSTI]

    Ihonvbere, Julius O.

    1991-01-01T23:59:59.000Z

    and Cambridge Universities in Nigeria, Lagos. May 1990. 44future after NOTES 1 "Nigeria: Taming the Army," AfricanPhillips, Economic Impact of Nigeria's Structural Adjustment

  3. ADJUSTMENT COSTS, LEARNING-BY-DOING, AND TECHNOLOGY ADOPTION UNDER UNCERTAINTY

    E-Print Network [OSTI]

    Pavlova, Anna

    2003-01-27T23:59:59.000Z

    We consider a variety of vintage capital models of a firm's choice of technology under uncertainty in the presence of adjustment costs and technology-specific learning. ...

  4. Asymmetric Price Adjustment and Consumer Search: An Examination of the Retail Gasoline Market

    E-Print Network [OSTI]

    Lewis, Matt

    2003-01-01T23:59:59.000Z

    The Behavior of Retail Gasoline Prices: Symmetric or Not? ”Adjustment of U.K. Retail Gasoline Prices to Cost Changes. ”documented that retail gasoline prices respond more quickly

  5. Asymmetric Price Adjustment and Consumer Search: An Examination of the Retail Gasoline Industry

    E-Print Network [OSTI]

    Lewis, Matt

    2003-01-01T23:59:59.000Z

    Adjustment of U.K. Retail Gasoline Prices to Cost Changes. ”The Behavior of Retail Gasoline Prices: Symmetric or Not? ”documented that retail gasoline prices respond more quickly

  6. 2014 Across-Breed EPD Adjustment Factors Released When using EPDs, bulls from one breed cannot be compared to another unless an adjustment factor is used. Since 1993,

    E-Print Network [OSTI]

    Florida, University of

    Research Center in Clay Center, Nebraska have released adjustment factors for growth traits and maternal Tough Decisions I have heard several questions concerning 1.) Should I sell my calves at weaning?, And 2

  7. Bacteria in shear flow

    E-Print Network [OSTI]

    Marcos, Ph.D. Massachusetts Institute of Technology

    2011-01-01T23:59:59.000Z

    Bacteria are ubiquitous and play a critical role in many contexts. Their environment is nearly always dynamic due to the prevalence of fluid flow: creeping flow in soil, highly sheared flow in bodily conduits, and turbulent ...

  8. Dispersed flow film boiling

    E-Print Network [OSTI]

    Yoder, Graydon L.

    1980-01-01T23:59:59.000Z

    Dispersed flow consists of small liquid droplets entrained in a flowing vapor. This flow regime can occur in cryogenic equipment, in steam generators, and during nuclear reactor loss of coolant accidents. A theoretical ...

  9. Assembly flow simulation of a radar

    SciTech Connect (OSTI)

    Rutherford, W.C.; Biggs, P.M.

    1993-10-01T23:59:59.000Z

    A discrete event simulation model has been developed to predict the assembly flow time of a new radar product. The simulation was the key tool employed to identify flow constraints. The radar, production facility, and equipment complement were designed, arranged, and selected to provide the most manufacturable assembly possible. A goal was to reduce the assembly and testing cycle time from twenty-six weeks to six weeks. A computer software simulation package (SLAM II) was utilized as the foundation a for simulating the assembly flow time. FORTRAN subroutines were incorporated into the software to deal with unique flow circumstances that were not accommodated by the software. Detailed information relating to the assembly operations was provided by a team selected from the engineering, manufacturing management, inspection, and production assembly staff. The simulation verified that it would be possible to achieve the cycle time goal of six weeks. Equipment and manpower constraints were identified during the simulation process and adjusted as required to achieve the flow with a given monthly production requirement. The simulation is being maintained as a planning tool to be used to identify constraints in the event that monthly output is increased. ``What-if`` studies have been conducted to identify the cost of reducing constraints caused by increases in output requirement.

  10. Multiphase flow calculation software

    DOE Patents [OSTI]

    Fincke, James R. (Idaho Falls, ID)

    2003-04-15T23:59:59.000Z

    Multiphase flow calculation software and computer-readable media carrying computer executable instructions for calculating liquid and gas phase mass flow rates of high void fraction multiphase flows. The multiphase flow calculation software employs various given, or experimentally determined, parameters in conjunction with a plurality of pressure differentials of a multiphase flow, preferably supplied by a differential pressure flowmeter or the like, to determine liquid and gas phase mass flow rates of the high void fraction multiphase flows. Embodiments of the multiphase flow calculation software are suitable for use in a variety of applications, including real-time management and control of an object system.

  11. Control of flow through a vapor generator

    DOE Patents [OSTI]

    Radcliff, Thomas D.

    2005-11-08T23:59:59.000Z

    In a Rankine cycle system wherein a vapor generator receives heat from exhaust gases, provision is made to avoid overheating of the refrigerant during ORC system shut down while at the same time preventing condensation of those gases within the vapor generator when its temperature drops below a threshold temperature by diverting the flow of hot gases to ambient and to thereby draw ambient air through the vapor generator in the process. In one embodiment, a bistable ejector is adjustable between one position, in which the hot gases flow through the vapor generator, to another position wherein the gases are diverted away from the vapor generator. Another embodiment provides for a fixed valve ejector with a bias towards discharging to ambient, but with a fan on the downstream side of said vapor generator for overcoming this bias.

  12. A void distribution model-flashing flow

    SciTech Connect (OSTI)

    Riznic, J.; Ishii, M.; Afgan, N.

    1987-01-01T23:59:59.000Z

    A new model for flashing flow based on wall nucleations is proposed here and the model predictions are compared with some experimental data. In order to calculate the bubble number density, the bubble number transport equation with a distributed source from the wall nucleation sites was used. Thus it was possible to avoid the usual assumption of a constant bubble number density. Comparisons of the model with the data shows that the model based on the nucleation site density correlation appears to be acceptable to describe the vapor generation in the flashing flow. For the limited data examined, the comparisons show rather satisfactory agreement without using a floating parameter to adjust the model. This result indicated that, at least for the experimental conditions considered here, the mechanistic predictions of the flashing phenomenon is possible on the present wall nucleation based model.

  13. Optimal transition from coal to gas and renewable power under capacity constraints and adjustment costs

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Optimal transition from coal to gas and renewable power under capacity constraints and adjustment existing coal power plants to gas and renewable power under a carbon budget. It solves a model of polluting, exhaustible resources with capacity constraints and adjustment costs (to build coal, gas, and renewable power

  14. Ergonomics Self-Evaluation: Computer Workstation Step 1: Adjust the Chair

    E-Print Network [OSTI]

    Johnston, Daniel

    Ergonomics Self-Evaluation: Computer Workstation Step 1: Adjust the Chair a. Seat height ­ Adjust medical condition or ergonomic concern, contact the UT at Austin Occupational Health Program at 512.471.4OHP(4647). http://www.utexas.edu/hr/current/services/ohp.html Ergonomic evaluation services

  15. Emerging Furniture Design Challenges and Product Development -Plus-size Furniture and Adjustable Furniture

    E-Print Network [OSTI]

    Emerging Furniture Design Challenges and Product Development - Plus-size Furniture and Adjustable population, · Furniture with reduced environmental impact, · Furniture lifecycle and end-of-life disposal of Problem: Adjustable furniture is a high-end product which provides customers more options to increase

  16. Cyclical adjustment, capital-labor substitution and total factor productivity convergence East Germany after unification

    E-Print Network [OSTI]

    Pfeifer, Holger

    Cyclical adjustment, capital-labor substitution and total factor productivity convergence ­ East integration and massive help from the Federal Government East German productivity catching up faded out in the nineties. This paper presents panel-data estimates of the productivity adjustment based on a production

  17. A Bayesian method for linear, inequality-constrained adjustment and its application to GPS positioning

    E-Print Network [OSTI]

    Santerre, Rock

    A Bayesian method for linear, inequality-constrained adjustment and its application to GPS 2005 Abstract. One of the typical approaches to linear, inequality-constrained adjustment (LICA be improved significantly and the new approach is feasible. Key words: Linear, inequality-constrained

  18. Section 1 (For Expenditure Adjustments) EXPENDITURES FOR BUSINESS BUDGET BUDGET BUDGET BUDGET OFFICE USE

    E-Print Network [OSTI]

    Tennessee, University of

    DATE Section 1 (For Expenditure Adjustments) EXPENDITURES FOR BUSINESS BUDGET BUDGET BUDGET BUDGET AMOUNT AMOUNT AMOUNT CODE TOTAL FOR BUSINESS Section 2 (For Revenue and Other Adjustments) BUDGET BUDGET/Chief Administrative Officer Department Head Chief Business Officer Dean or Director Vice President for Budget

  19. A continuous traffic study as a source of input data for the computation of operating ratios for selected weight brackets

    E-Print Network [OSTI]

    Jones, James Davis

    1966-01-01T23:59:59.000Z

    Purpose Scope Need for Adequate Cost Data Methods and Procedures HISTORICAL DEVELOPMENT OF FREIGHT TRAFFIC STUDIES Xn tro due t ion Waybill Studies Special Purpose Studies General Purpose Studies Continuous Waybi, ll Sample Sample Selection... Uses of Waybill Data Freight Bill Studies One' Day Studies Fixed Period Studies Continuous Traffic Studies Continuous Traffic Study and the Regulatory Body Summary METHODOLOGY sge 1 2 4 ) 'I 1 1 2i 21 22 26 27 27 37 38 40 42...

  20. Arterial-street signal timing strategies to provide additional through-traffic capacity during freeway incident conditions

    E-Print Network [OSTI]

    Dale, James Joseph

    1992-01-01T23:59:59.000Z

    relationships identified are likely to be common to other arterial-street sections with similar configurations and traffic patterns. ACKNOWLEDGMENTS This research was funded by Project No. 30, "Fuel Savings from Surveillance, Signing, and Signal Control... timing plan to accommodate diverted traffic from a freeway plays a significant role in the development of integrated freeway and arterial street control systems like the Automated Traffic Surveillance gnd control (ATSAC) system in Los Angeles (Rowe...

  1. Information flow in the DAMA Project beyond database managers: Information flow managers

    SciTech Connect (OSTI)

    Russell, L. [Argonne National Lab., IL (United States); Wolfson, O.; Yu, C. [Illinois Univ., Chicago, IL (United States)

    1996-03-01T23:59:59.000Z

    To meet the demands of commercial data traffic on the information highway, a new look at managing data is necessary. One projected activity, sharing of point-of-sale information, is being considered in the Demand Activated Manufacturing Project of the American Textile Partnership project. A scenario is examined in which 100,000 retail outlets communicate over a period of days. They provide the latest estimate of demand for sewn products across a chain of 26,000 suppliers through the use of bill-of-materials explosions at four levels of detail. A new paradign the information flow manager, is developed to handle this situation, including the case where members of the supply chain fail to communicate and go out of business. Techniques for approximation are introduced to keep estimates of demand as current as possible.

  2. Management processes in U.S. air traffic management modernization : a study of global navigation satellite system development

    E-Print Network [OSTI]

    Sandvig, John H.

    1994-01-01T23:59:59.000Z

    This thesis investigates organization and management issues associated with the Federal Aviation Administration's (FAA) efforts to modernize the nation's Air Traffic Management (ATM) system. Focus is placed specifically ...

  3. Traffic-related air pollution exposures and changes in heart rate variability in Mexico City: A panel study

    E-Print Network [OSTI]

    2013-01-01T23:59:59.000Z

    to traffic-related air pollution and the risk of coronaryof particulate air pollution. Environ Health Perspect 2001,between ambient air pollution and daily mortality among

  4. Freshwater Flow Charts - 1995

    SciTech Connect (OSTI)

    Kaiper, G V

    2003-11-21T23:59:59.000Z

    This report covers the following: (1) Explanation of Charts Showing Freshwater Flow in 1995; (2) Estimated U.S. Freshwater Flow in 1995 (chart); (3) Estimated California Freshwater Flow in 1995 (chart); (4) Estimated New Mexico Freshwater Flow in 1995 (chart); and (5) Web locations and credits.

  5. Severity of injuries in different modes of transport, expressed with disability-adjusted life years (DALYs)

    E-Print Network [OSTI]

    Tainio, Marko; Olkowicz, Dorota; Teresi?ski, Grzegorz; de Nazelle, Audrey; Nieuwenhuijsen, Mark J.

    2014-07-11T23:59:59.000Z

    ; STRADA: Swedish traffic accident data acquisition; YLD: Years lost due to disability; YLL: Years of life lost. Warsaw. TAPAS is a four year project (partly) funded by the Coca-Cola greenhouse-gas emissions: urban land transport. Lancet 2009, Mendez M...

  6. Portable wastewater flow meter

    DOE Patents [OSTI]

    Hunter, Robert M. (320 S. Wilson Ave., Bozeman, MT 59715)

    1990-01-01T23:59:59.000Z

    A portable wastewater flow meter particularly adapted for temporary use at a single location in measuring the rate of liquid flow in a circular entrance conduit of a sewer manhole both under free flow and submerged, open channel conditions and under full pipe, surcharged conditions, comprising an apparatus having a cylindrical external surface and an inner surface that constricts the flow through the apparatus in such a manner that a relationship exists between (1) the difference between the static pressure head of liquid flowing through the entrance of the apparatus and the static pressure head of liquid flowing through the constriction, and (2) the rate of liquid flow through the apparatus.

  7. Portable wastewater flow meter

    DOE Patents [OSTI]

    Hunter, Robert M. (320 S. Wilson Ave., Bozeman, MT 59715)

    1999-02-02T23:59:59.000Z

    A portable wastewater flow meter particularly adapted for temporary use at a single location in measuring the rate of liquid flow in a circular entrance conduit of a sewer manhole both under free flow and submerged, open channel conditions and under fill pipe, surcharged conditions, comprising an apparatus having a cylindrical external surface and an inner surface that constricts the flow through the apparatus in such a manner that a relationship exists between (1) the difference between the static pressure head of liquid flowing through the entrance of the apparatus and the static pressure head of liquid flowing through the constriction, and (2) the rate of liquid flow through the apparatus.

  8. Real-Time Traffic Information for Emergency Evacuation Operations: Phase A Final Report

    SciTech Connect (OSTI)

    Franzese, Oscar [ORNL; Zhang, Li [Mississippi State University (MSU); Mahmoud, Anas M. [Mississippi State University (MSU); Lascurain, Mary Beth [ORNL; Wen, Yi [Mississippi State University (MSU)

    2010-05-01T23:59:59.000Z

    There are many instances in which it is possible to plan ahead for an emergency evacuation (e.g., an explosion at a chemical processing facility). For those cases, if an accident (or an attack) were to happen, then the best evacuation plan for the prevailing network and weather conditions would be deployed. In other cases (e.g., the derailment of a train transporting hazardous materials), there may not be any previously developed plan to be implemented and decisions must be made ad-hoc on how to proceed with an emergency evacuation. In both situations, the availability of real-time traffic information plays a critical role in the management of the evacuation operations. To improve public safety during a vehicular emergency evacuation it is necessary to detect losses of road capacity (due to incidents, for example) as early as possible. Once these bottlenecks are identified, re-routing strategies must be determined in real-time and deployed in the field to help dissipate the congestion and increase the efficiency of the evacuation. Due to cost constraints, only large urban areas have traffic sensor deployments that permit access to some sort of real-time traffic information; any evacuation taking place in any other areas of the country would have to proceed without real-time traffic information. The latter was the focus of this SERRI/DHS (Southeast Region Research Initiative/Department of Homeland Security) sponsored project. That is, the main objective on the project was to improve the operations during a vehicular emergency evacuation anywhere by using newly developed real-time traffic-information-gathering technologies to assess traffic conditions and therefore to potentially detect incidents on the main evacuation routes. Phase A of the project consisted in the development and testing of a prototype system composed of sensors that are engineered in such a way that they can be rapidly deployed in the field where and when they are needed. Each one of these sensors is also equipped with their own power supply and a GPS (Global Positioning System) device to auto-determine its spatial location on the transportation network under surveillance. The system is capable of assessing traffic parameters by identifying and re-identifying vehicles in the traffic stream as those vehicles pass over the sensors. The system of sensors transmits, through wireless communication, real-time traffic information (travel time and other parameters) to a command and control center via an NTCIP (National Transportation Communication for ITS Protocol) -compatible interface. As an alternative, an existing NTCIP-compatible system accepts the real-time traffic information mentioned and broadcasts the traffic information to emergency managers, the media and the public via the existing channels. A series of tests, both in a controlled environment and on the field, were conducted to study the feasibility of rapidly deploying the system of traffic sensors and to assess its ability to provide real-time traffic information during an emergency evacuation. The results of these tests indicated that the prototype sensors are reliable and accurate for the type of application that is the focus of this project.

  9. High-speed and high-fidelity system and method for collecting network traffic

    DOE Patents [OSTI]

    Weigle, Eric H. (Los Alamos, NM)

    2010-08-24T23:59:59.000Z

    A system is provided for the high-speed and high-fidelity collection of network traffic. The system can collect traffic at gigabit-per-second (Gbps) speeds, scale to terabit-per-second (Tbps) speeds, and support additional functions such as real-time network intrusion detection. The present system uses a dedicated operating system for traffic collection to maximize efficiency, scalability, and performance. A scalable infrastructure and apparatus for the present system is provided by splitting the work performed on one host onto multiple hosts. The present system simultaneously addresses the issues of scalability, performance, cost, and adaptability with respect to network monitoring, collection, and other network tasks. In addition to high-speed and high-fidelity network collection, the present system provides a flexible infrastructure to perform virtually any function at high speeds such as real-time network intrusion detection and wide-area network emulation for research purposes.

  10. Traffic Incident Analysis on Urban Arterials Using Extended Spectral Envelope Method

    E-Print Network [OSTI]

    Yang, Zhen-zhen; Gao, Zi-you; Sun, Ya-fu; Guo, Sheng-min

    2015-01-01T23:59:59.000Z

    A traffic incident analysis method based on extended spectral envelope (ESE) method is presented to detect the key incident time. Sensitivity analysis of parameters (the length of time window, the length of sliding window and the study period) are discussed on four real traffic incidents in Beijing. The results show that: (1) Moderate length of time window got the best accurate in detection. (2) The shorter the sliding window is, the more accurate the key incident time are detected. (3) If the study period is too short, the end time of an incident cannot be detected. Empirical studies show that the proposed method can effectively discover the key incident time, which can provide a theoretic basis for traffic incident management.

  11. LED Traffic Light as a Communications Device Grantham Pang, Thomas Kwan, Chi-Ho Chan, Hugh Liu.

    E-Print Network [OSTI]

    Pang, Grantham

    :http://www.eee.hku.hk/~gpang Abstract The visible light from an LED (light emitting diode) traffic light can be modulated and encoded on the description of an audio information system made up of high brightness, visible light emitting diodes (LEDs messages 1. Introduction Recently, high intensity light emitting diodes for traffic signals are available

  12. Detecting Anomalies in Network Traffic Using Maximum Entropy Estimation Yu Gu, Andrew McCallum, Don Towsley

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    the network administrator a multi­ dimensional view of the network traffic. Our method can detect anomalies classes that increase the relative entropy thus providing the network administrator information related1 Detecting Anomalies in Network Traffic Using Maximum Entropy Estimation Yu Gu, Andrew Mc

  13. Traffic Generation of IEC 61850 Sampled Values Jakub W. Konka, Colin M. Arthur, Francisco J. Garcia and Robert C. Atkinson

    E-Print Network [OSTI]

    Atkinson, Robert C

    Traffic Generation of IEC 61850 Sampled Values Jakub W. Konka, Colin M. Arthur, Francisco J. Garcia or emulate his ideas are paramount. Within this scope, a traffic generation system has been developed for IEC transmission systems to Smart Grids [2]. One such example is the international standard IEC 61850. Originally

  14. Traffic-Thermal Mutual-Coupling Co-Simulation Platform for Three-Dimensional Network-on-Chip

    E-Print Network [OSTI]

    Hung, Shih-Hao

    of network traffic, power, temperature, and thermal management is shown in Fig. 1(b). During simulation power consumption of the NoC system, which is a power trace. The thermal model calculates the temperature profile by the given power trace. The thermal management regulates the network traffic based

  15. Examining the Generalized Waring Model for the Analysis of Traffic Crashes

    E-Print Network [OSTI]

    Peng, Yichuan

    2013-05-03T23:59:59.000Z

    characterized by heavy long tail (Guo and Trivedi, 2002). Third, many empirical crash data exhibit more zero observations than would be allowed by a NB regression model, which causes the low mean issue of traffic crash datasets. It is often difficult.... This kind of model has been extensively used in many areas (e.g. Ramaswamy et al., 1994; Wang et al., 1998; Guo & Trivedi, 2002)and has been proposed and applied in the traffic safety context recently (Park & Lord, 2010). The general model structure of a...

  16. Psychological Characteristics and Adjustment in Caregivers of Children with Severe Neurodisability with Chronic Pulmunary Symptoms

    E-Print Network [OSTI]

    Blucker, Ryan Thomas

    2011-08-08T23:59:59.000Z

    -reported experiences related to general health and psychological adjustment. It was hypothesized that this specific group of caregivers would report relatively high levels of distress related to disability severity and resulting respiratory care management plan...

  17. Is the hourly data I get from NREL's PV Watts program adjusted...

    Open Energy Info (EERE)

    get from NREL's PV Watts program adjusted for daylight savings time. Home I take the hourly AC output numbers and apply them to a program I built that assigns a dollar value to the...

  18. E-Print Network 3.0 - adjusted d-dimer cut-off Sample Search...

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

    44 Study of the Response Function of the CUORE Bolometers towards a Neutrinoless Double Beta Decay Summary: sampling and cut-off frequency for each bolometer and adjust them...

  19. 31.01.01.V1.05 SALARY ADJUSTMENTS FOR INTERNATIONAL ASSIGNMENTS

    E-Print Network [OSTI]

    administered by the employee, or other measure of increased responsibility resulting from the assignment. 1 associated with a change in position. 2.00 GUIDELINES AND PROCEDURES 2.01 All salary adjustments

  20. Essays in Applied Macroeconomics: Asymmetric Price Adjustment, Exchange Rate and Treatment Effect

    E-Print Network [OSTI]

    Gu, Jingping

    2009-05-15T23:59:59.000Z

    -varying volatility of gasoline price disturbances is an important feature of the data, and when we allow for asymmetric GARCH errors and investigate the system wide impulse response function, we find evidence of asymmetric adjustment to crude oil price changes...

  1. Assessment of Dancoff adjusted Wigner-Seitz cells for self-shielding LWR lattices

    E-Print Network [OSTI]

    Roomy, Thomas Hayward

    2012-01-01T23:59:59.000Z

    The objective of this thesis was to assess the effectiveness of using a Wigner-Seitz (WS) cell with an adjusted moderator thickness to produce more accurate resonance self-shielded cross sections for light water reactor ...

  2. The relation between family functioning and psychological adjustment in children with asthma and children with diabetes

    E-Print Network [OSTI]

    Fontaine, Eve Nicole

    2007-04-25T23:59:59.000Z

    The goals of this study were to evaluate the relationships among family functioning, psychological adjustment, and health-related quality of life in children with asthma and children with diabetes. A secondary goal of this study was to examine...

  3. Design of an adjustable arm-supported table that is counterbalanced against gravity

    E-Print Network [OSTI]

    Olle, Chase R

    2013-01-01T23:59:59.000Z

    A prototype system was designed and constructed that used a wall-mounted, counterbalanced mechanical arm to support a workspace that can be adjusted for position. Possible applications of the system include use as a writing ...

  4. 2007 IEEE International Conference on Signal Processing and Communications (ICSPC 2007), 24-27 November 2007, Dubai, United Arab Emirates A MODLE FOR CONTROLLED VBR VIDEO TRAFFIC

    E-Print Network [OSTI]

    Gabbouj, Moncef

    -27 November 2007, Dubai, United Arab Emirates A MODLE FOR CONTROLLED VBR VIDEO TRAFFIC Mehdi Rezaei, 2Imed

  5. Power Compensation Effect of an Adjustable-Speed Rotary Condenser with a Flywheel for a Large Capacity Magnet Power Supply

    E-Print Network [OSTI]

    Akagi, H

    1999-01-01T23:59:59.000Z

    Power Compensation Effect of an Adjustable-Speed Rotary Condenser with a Flywheel for a Large Capacity Magnet Power Supply

  6. Uncertainty-based Estimation of the Secure Range for ISO New England Dynamic Interchange Adjustment

    SciTech Connect (OSTI)

    Etingov, Pavel V.; Makarov, Yuri V.; Wu, Di; Hou, Zhangshuan; Sun, Yannan; Maslennikov, S.; Luo, Xiaochuan; Zheng, T.; George, S.; Knowland, T.; Litvinov, E.; Weaver, S.; Sanchez, E.

    2014-04-14T23:59:59.000Z

    The paper proposes an approach to estimate the secure range for dynamic interchange adjustment, which assists system operators in scheduling the interchange with neighboring control areas. Uncertainties associated with various sources are incorporated. The proposed method is implemented in the dynamic interchange adjustment (DINA) tool developed by Pacific Northwest National Laboratory (PNNL) for ISO New England. Simulation results are used to validate the effectiveness of the proposed method.

  7. Denial of Service attacks: path reconstruction for IP traceback using Adjusted Probabilistic Packet Marking

    E-Print Network [OSTI]

    Dube, Raghav

    2005-02-17T23:59:59.000Z

    DENIAL OF SERVICE ATTACKS: PATH RECONSTRUCTION FOR IP TRACEBACK USING ADJUSTED PROBABILISTIC PACKET MARKING A Thesis by RAGHAV DUBE 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 2004 Major Subject: Electrical Engineering DENIAL OF SERVICE ATTACKS: PATH RECONSTRUCTION FOR IP TRACEBACK USING ADJUSTED PROBABILISTIC PACKET MARKING A Thesis by RAGHAV DUBE Submitted to Texas A&M University...

  8. Traffic Management Policy and Guidelines v. 1.0 Page 1 of 4 This document is the property of the University of Canterbury.

    E-Print Network [OSTI]

    Hickman, Mark

    -323 ______________________________________________________________________________________ Traffic Management Policy and Guidelines v. 1.0 Page 1 of 4 © This document is the property (COPTTM) ­ document created by NZ Transport Agency which lays out the temporary traffic management-323 ______________________________________________________________________________________ Traffic Management Policy and Guidelines v. 1.0 Page 2 of 4 © This document is the property

  9. Ultrasonic flow metering system

    DOE Patents [OSTI]

    Gomm, Tyler J. (Meridian, ID); Kraft, Nancy C. (Idaho Falls, ID); Mauseth, Jason A. (Pocatello, ID); Phelps, Larry D. (Pocatello, ID); Taylor, Steven C. (Idaho Falls, ID)

    2002-01-01T23:59:59.000Z

    A system for determining the density, flow velocity, and mass flow of a fluid comprising at least one sing-around circuit that determines the velocity of a signal in the fluid and that is correlatable to a database for the fluid. A system for determining flow velocity uses two of the inventive circuits with directional transmitters and receivers, one of which is set at an angle to the direction of flow that is different from the others.

  10. Elbow mass flow meter

    DOE Patents [OSTI]

    McFarland, Andrew R. (College Station, TX); Rodgers, John C. (Santa Fe, NM); Ortiz, Carlos A. (Bryan, TX); Nelson, David C. (Santa Fe, NM)

    1994-01-01T23:59:59.000Z

    Elbow mass flow meter. The present invention includes a combination of an elbow pressure drop generator and a shunt-type mass flow sensor for providing an output which gives the mass flow rate of a gas that is nearly independent of the density of the gas. For air, the output is also approximately independent of humidity.

  11. Bounds on the Minimum Energy-Per-Bit for Bursty Traffic in Diamond Networks

    E-Print Network [OSTI]

    Danforth, Bryan Nicholas

    , these studies lack a fundamental characterization of the energy and bandwidth costs of synchronization. Early work on the fundamental limits of asynchronous communication involved characterizing the data rates are often battery-operated. Thus, in the case of short and sporadic transmissions, i.e., bursty traffic

  12. Screen-Off Traffic Characterization and Optimization in 3G/4G Networks

    E-Print Network [OSTI]

    Mao, Zhuoqing Morley

    Screen-Off Traffic Characterization and Optimization in 3G/4G Networks Junxian Huang University resource constraints: limited frequency spectrum, network processing capability, and hand- set battery life. Copyright 2012 ACM 978-1-4503-1705-4/12/11 ...$15.00. kinds. Cellular networks are typically characterized

  13. Scheduling and NoC Traffic Reduction in T-SDF Architecture

    E-Print Network [OSTI]

    Giorgi, Roberto

    Scheduling and NoC Traffic Reduction in T-SDF Architecture Roberto Giorgi, Nikola Puzovic1 Dept a multiprocessor on chip architecture based on SDF architecture, by placing multiple processing cores on a single 1 Introduction Our research is focused on expanding SDF architecture [1][2] by placing more than one

  14. On the Feasibility of UMTS-based Traffic Information Systems Christoph Sommer,a

    E-Print Network [OSTI]

    Breu, Ruth

    On the Feasibility of UMTS-based Traffic Information Systems Christoph Sommer,a , Armin Schmidtb. Tel.: +49 9131 85-27993, Fax: -27409 Email addresses: christoph.sommer@informatik.uni-erlangen.de (Christoph Sommer), aschmidt@lnt.de (Armin Schmidt), chenyi@comnets.uni-bremen.de (Yi Chen), german

  15. Beijing Traffic Jam Daniel Barry, Jennifer Corriveau, Michael Lecomte, Johanna Zuber

    E-Print Network [OSTI]

    Nagurney, Anna

    that railway would be the most efficient and environmentally friendly way for energy transportation" · 42,000km; efficient; high capacity · Can reduce up to 25-30% of traffic jams · Safety precautions #12;Solution: Energy, construction · Solutions: Railroad, Straddle bus, Transport energy #12;Questions? · Thank you! #12;

  16. Danijela Bari University of Zagreb, Faculty of Transport and Traffic Sciences, Zagreb, Croatia

    E-Print Network [OSTI]

    Illinois at Urbana-Champaign, University of

    Danijela Bari University of Zagreb, Faculty of Transport and Traffic Sciences, Zagreb, Croatia Sanja Pai HZ Infrastructure L.L., Zagreb, Croatia THE POSITIVE EFFECTS OF THE SAFETY PROGRAM "TRAIN IS ALWAYS FASTER" #12;CONTENT - Introduction - Croatian railways network - Safety on LC in Croatia - Program

  17. Optimal Traffic-Oblivious Energy-Aware Routing For Multihop Wireless Networks

    E-Print Network [OSTI]

    Holte, Robert

    constraints. If the power supply is renewable, it is desirable that the energy consumption rate is less than the renewal rate. Lin et al. [15] study power-aware routing with renewable energy sources. Some previous workOptimal Traffic-Oblivious Energy-Aware Routing For Multihop Wireless Networks Yuxi Li Janelle Harms

  18. Real-Time Queues in Heavy Traffic with Earliest-Deadline-First Queue Discipline

    E-Print Network [OSTI]

    systems also control much of modern tech- nology, for example engines and braking systems in automobiles, all avionic systems (including air traffic control) and all aspects of modern manufactur- ing facilities. Computerized control systems must receive and react to state information within a fixed, often

  19. Multi-step-ahead prediction of MPEG-coded video source traffic using empirical modeling techniques

    E-Print Network [OSTI]

    Gupta, Deepanker

    2006-04-12T23:59:59.000Z

    In the near future, multimedia will form the majority of Internet traffic and the most popular standard used to transport and view video is MPEG. The MPEG media content data is in the form of a time-series representing frame/VOP sizes. This time...

  20. Low-Power and Error Coding for Network-on-Chip Traffic

    E-Print Network [OSTI]

    Jantsch, Axel

    frameworks of simulation perform- ance and power estimation, Section 4 presents the setup for simulation and tele- communication systems. There are several works, describing methods to esti- mate powerLow-Power and Error Coding for Network-on-Chip Traffic Arseni Vitkovski, Raimo Haukilahti, Axel

  1. Assessing the impacts of military vehicle traffic on natural areas. Introduction to the special

    E-Print Network [OSTI]

    Fehmi, Jeffrey S.

    Assessing the impacts of military vehicle traffic on natural areas. Introduction to the special issue and review of the relevant military vehicle impact literature Alan B. Anderson a,*, Antonio J, and the International Society for Terrain-Vehicle Systems cosponsored a symposium titled ``Assessing the Impacts

  2. Greenhouse Gas Pollution in the Stratosphere Due to Increasing Airplane Traffic, Effects On the Environment

    E-Print Network [OSTI]

    Murty, Katta G.

    Greenhouse Gas Pollution in the Stratosphere Due to Increasing Airplane Traffic, Effects On the Environment Katta G. Murty Department of Industrial and Operations Engineering University of Michigan, Ann to tremendous increases in the construction of huge airport facilities, the development of large jumbo

  3. Avoiding the Rush Hours: WiFi Energy Management via Traffic Isolation

    E-Print Network [OSTI]

    Shihada, Basem

    Avoiding the Rush Hours: WiFi Energy Management via Traffic Isolation Justin Manweiler Duke.rc@duke.edu ABSTRACT WiFi continues to be a prime source of energy consumption in mobile devices. This paper observes that, despite a rich body of research in WiFi energy management, there is room for improvement. Our key

  4. SCANNING FOR VISUAL TRAFFIC: AN EYE TRACKING STUDY Kurt Colvin1

    E-Print Network [OSTI]

    1 SCANNING FOR VISUAL TRAFFIC: AN EYE TRACKING STUDY Kurt Colvin1 , Rahul M. Dodhia2,3 , Sean) visual scanning pattern for pilots to see and avoid other aircraft. Little research has been published on how effectively pilots actually scan. In our study, pilots fly VFR scenarios in a general aviation

  5. Spatial and Temporal Patterns in Large-Scale Traffic Speed Prediction

    E-Print Network [OSTI]

    Jaillet, Patrick

    , such as k-means clustering, Principal Component Analysis (PCA), and Self Organizing Maps (SOM) to mine, they developed a custom model for the test area, which is not available. This limits any meaningful comparison will also consider road category wise comparison as one of the indices for performance evaluation. Traffic

  6. Traffic Impact Study for UMore Park Sand and Gravel Resources Project

    E-Print Network [OSTI]

    Netoff, Theoden

    Traffic Impact Study for UMore Park Sand and Gravel Resources Project DRAFT City of Rosemount Impact Study for UMore Park Sand and Gravel Resources Project City of Rosemount and Empire Township Figure 13 Existing Lane Geometry and Intersection Control Figure 14 Mitigation Measures for 2011 and 2030

  7. Traffic Impact Study for UMore Park Sand and Gravel Resources Project

    E-Print Network [OSTI]

    Netoff, Theoden

    Traffic Impact Study for UMore Park Sand and Gravel Resources Project City of Rosemount and Empire Figure 13 Existing Lane Geometry and Intersection Control Figure 14 Mitigation Measures for 2011 and 2030 No Build Conditions Figure 15 2011 Build Initial Lane Geometry and Intersection Control Figure 16 2030

  8. LRRB Pavement Management SystemsTraffic Generator Managing Interaction Between Local

    E-Print Network [OSTI]

    Minnesota, University of

    LRRB Pavement Management SystemsTraffic Generator Managing Interaction Between Local Authorities Research Board May 24, 2011 22nd Annual Transportation Research Conference #12;LRRB Pavement ManagementSCU, Consultants, etc. · Administered by Mn/DOT Research Services LRRB Funding #12;LRRB Pavement Management Systems

  9. PAVEMENT PREDICTION PERFORMANCE MODELS AND RELATION WITH TRAFFIC FATALITIES AND INJURIES

    E-Print Network [OSTI]

    Boyer, Edmond

    PAVEMENT PREDICTION PERFORMANCE MODELS AND RELATION WITH TRAFFIC FATALITIES AND INJURIES V. CEREZO.gothie@developpement-durable.gouv.fr ABSTRACT This paper presents some results of a study, which aimed at modelling pavement evolution, pavement characteristics and age. In a second part, non-linear regressions were used in view of obtaining

  10. Influence of vehide traffic reduction in a town centre on BTX polhition Isabelle ZDANEVITCH a

    E-Print Network [OSTI]

    Boyer, Edmond

    et Pollution de l'Air", Avignon : France (2000)" #12;1. Objectives It seems obvious that with limited centres. According to that scheine, WERIS, m association wifh the local Air Qualily Moniforing Nefwork A1 clearly indicates traffic äs the main source of atmospheric pollution. Measured benzene levels over the 3

  11. Comparisons of Air Traffic Control Implementations on an Associative Processor with a MIMD and

    E-Print Network [OSTI]

    be completed in time to meet their individual deadlines. The Federal Aviation Administration (FAA) has put Aviation Administration (FAA), Multiprocessor, NP-complete 1. Introduction The Air Traffic Control (ATC&R), ClearSpeed CSX600, Multicore Processor, OpenMP, Predictability, Worst Case Execution Time, Federal

  12. The Federal Aviation Administration (FAA) estimates that 70% of air traffic

    E-Print Network [OSTI]

    Reuter, Martin

    The Federal Aviation Administration (FAA) estimates that 70% of air traffic delays result from by the Port Authority of New York and New Jersey, and the FAA in 2007 established a program to field on by thunderstorms. The FAA estimates that one-third of all commercial airline flights daily pass through the New

  13. DOT/FAA/AR-08/37,P1 Air Traffic Organization

    E-Print Network [OSTI]

    Mobasher, Barzin

    as to its use. This report is available at the Federal Aviation Administration William J. Hughes Technical Name and Address U.S. Department of Transportation Federal Aviation Administration Air Traffic The Federal Aviation Administration Airport and Aircraft Safety R&D Division COTR was Donald Altobelli. 16

  14. An analysis of the multiple paths used in traffic assignment algorithms

    E-Print Network [OSTI]

    Butorac, Julia Ann Kuhn

    1997-01-01T23:59:59.000Z

    require the analysis of route-based metrics in addition to roadway volumes. The traffic assignment techniques typically used in planning models are link-based and do not explicitly enumerate or evaluate routes. To date, no research has been conducted...

  15. Performance Evaluation of Adaptive Ramp-Metering Algorithms Using Microscopic Traffic Simulation Model

    E-Print Network [OSTI]

    Levinson, David M.

    in the vicinity of the ramp. Examples of local traffic-responsive control are demand capacity, occupancy control and potential effectiveness of such algorithms depend on a number of complex factors that are best investigated-metering policies, implementations based on such develop- ments have been slow in coming. In practice, modes

  16. Development and implementation of algorithms used in ground and internet traffic monitoring 

    E-Print Network [OSTI]

    Ametha, Jayesh

    2001-01-01T23:59:59.000Z

    . The development and real-time implementation of a new algorithm that filters out erroneous data from the ILDs is the focus of the first half of this thesis. The developed algorithm is based solely on vehicle kinematics and is implemented in real-time. Traffic data...

  17. Facilitation of visual pattern recognition by extraction of relevant features from microscopic traffic data 

    E-Print Network [OSTI]

    Fields, Matthew James

    2008-10-10T23:59:59.000Z

    feature space; this is done to minimize the experimental set to a matrix of desirable attributes from the vehicles on the roadway. The application is to identify if this data can be readily parsed into four distinct traffic states; in this case, the state...

  18. Facilitation of visual pattern recognition by extraction of relevant features from microscopic traffic data 

    E-Print Network [OSTI]

    Fields, Matthew James

    2009-05-15T23:59:59.000Z

    feature space; this is done to minimize the experimental set to a matrix of desirable attributes from the vehicles on the roadway. The application is to identify if this data can be readily parsed into four distinct traffic states; in this case, the state...

  19. Stochasticity and traffic jams in the transcription of ribosomal RNA: Intriguing role of termination and antitermination

    E-Print Network [OSTI]

    Stefan Klumpp; Terence Hwa

    2008-11-19T23:59:59.000Z

    In fast growing bacteria, ribosomal RNA (rRNA) is required to be transcribed at very high rates to sustain the high cellular demand on ribosome synthesis. This results in dense traffic of RNA polymerases (RNAP). We developed a stochastic model, integrating results of single-molecule and quantitative in vivo studies of E. coli, to evaluate the quantitative effect of pausing, termination, and antitermination on rRNA transcription. Our calculations reveal that in dense RNAP traffic, spontaneous pausing of RNAP can lead to severe "traffic jams", as manifested in the broad distribution of inter-RNAP distances and can be a major factor limiting transcription and hence growth. Our results suggest the suppression of these pauses by the ribosomal antitermination complex to be essential at fast growth. Moreover, unsuppressed pausing by even a few non-antiterminated RNAPs can already reduce transcription drastically under dense traffic. However, the termination factor Rho can remove the non-antiterminated RNAPs and restore fast transcription. The results thus suggest an intriguing role by Rho to enhance rather than attenuate rRNA transcription.

  20. CARSystem: a distributed algorithm for efficient real-time vehicular traffic control

    E-Print Network [OSTI]

    Koothrappally, Joseph

    1997-01-01T23:59:59.000Z

    transfer between individual traffic control processes. Real-time information -obtained by tracking the density profiles that constitute demand at each intersection in real-time-is used by an on-line optimization algorithm to provide real-time adaptive...

  1. On the Adaptivity of today's Energy-Efficient MAC Protocols under varying Traffic Conditions

    E-Print Network [OSTI]

    Braun, Torsten

    On the Adaptivity of today's Energy-Efficient MAC Protocols under varying Traffic Conditions typically accounts for a major portion of a WSN node's power consumption, researchers have proposed Energy-Efficient. Such protocols typically trade off energy-efficiency versus classical quality of service parameters (e

  2. Exploration of Weather Impacts on Freeway Traffic Operations and Safety Using High-Resolution Weather Data

    E-Print Network [OSTI]

    Bertini, Robert L.

    Exploration of Weather Impacts on Freeway Traffic Operations and Safety Using High-Resolution Weather Data by Chengyu Dai A thesis submitted in partial fulfillment of the requirements for the degree Moradkhani Kristin Tufte Portland State University ©2011 #12;i ABSTRACT Adverse weather is considered as one

  3. Abstract --The microscopic simulation is getting increasingly common in traffic planning and research because

    E-Print Network [OSTI]

    Thawonmas, Ruck

    an automated environment that handles all the necessary operations. The system organizes the files, executes involves more inherent fluctuations and variation of the vehicle dynamics, thus increasing the model automation. II. THE SIMULATION MODEL The HUTSIM urban traffic simulation system is an object-oriented micro

  4. Traffic Shaping to Reduce Jitter in Controller Area Network (CAN) Robert I. Davis

    E-Print Network [OSTI]

    Navet, Nicolas

    Traffic Shaping to Reduce Jitter in Controller Area Network (CAN) Robert I. Davis Real-Time Systems in the response time of the message on the source network typically translates into queuing jitter on the destination network. This jitter inheritance accumulates across each gateway and can significantly impact

  5. Prediction Aggregation of Remote Traffic Microwave Sensors Speed and Volume Data

    E-Print Network [OSTI]

    Havlicek, Joebob

    Prediction Aggregation of Remote Traffic Microwave Sensors Speed and Volume Data John R. Junger prediction is an important component of well developed Intelligent Trans- portation Systems and Advanced significant challenges to integrating polled data into such a predictive system. To overcome these, we present

  6. An Energy Aware Admission Control With Traffic Class Differentiation: From Theory to NS-2 Simulation

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    An Energy Aware Admission Control With Traffic Class Differentiation: From Theory to NS-2 for computer networks is called green networking. The proposed paper aims to de- velop and test an energy-aware solution. EAAC-MQ, an Energy-Aware Admission Control for wired networks, has been created and tested

  7. JAMAR TRAX RD The TRAX RD is an automatic traffic recorder designed and built by JAMAR

    E-Print Network [OSTI]

    Prevedouros, Panos D.

    lead gel battery. Our unit also included the optional solar panel. When the unit on is turned on Technologies, Inc. Since the unit is a "Raw Data" unit, it records a time stamp of every sensor hit that occurs during the period of data collection. This unit works using air switches and road tubes to sense traffic

  8. Development and implementation of algorithms used in ground and internet traffic monitoring

    E-Print Network [OSTI]

    Ametha, Jayesh

    2001-01-01T23:59:59.000Z

    . The development and real-time implementation of a new algorithm that filters out erroneous data from the ILDs is the focus of the first half of this thesis. The developed algorithm is based solely on vehicle kinematics and is implemented in real-time. Traffic data...

  9. Facilitation of visual pattern recognition by extraction of relevant features from microscopic traffic data

    E-Print Network [OSTI]

    Fields, Matthew James

    2009-05-15T23:59:59.000Z

    feature space; this is done to minimize the experimental set to a matrix of desirable attributes from the vehicles on the roadway. The application is to identify if this data can be readily parsed into four distinct traffic states; in this case, the state...

  10. A New Approach To Robust Non-Intrusive Traffic Detection at Intersections!

    E-Print Network [OSTI]

    Minnesota, University of

    A New Approach To Robust Non-Intrusive Traffic Detection at Intersections! Chad Stelzig ­ Algorithm Solutions! Background and Terminology !! § "Non-Intrusive Detection Systems"! § Above ground detection accuracy with a non- intrusive system! #12;Global Solutions! Single Sensor Detection Systems! § Any

  11. Delay stability of back-pressure policies in the presence of heavy-tailed traffic

    E-Print Network [OSTI]

    Markakis, Mihalis G.

    We study scheduling and routing problems that arise in multi-hop wireline networks with a mix of heavy-tailed and light-tailed traffic. We analyze the delay performance of the widely studied class of Back-Pressure policies, ...

  12. SIGNIFICANCE OF TRAFFIC PRODUCED TURBULENCE FOR URBAN DISPERSION MODELING Petra Kastner-Klein

    E-Print Network [OSTI]

    Fedorovich, Evgeni

    in reducing tail-pipe emissions, urban air pollution caused by mobile sources is still a major problem released inside the urban canopy. The street ventilation is then controlled by the interaction between buoyancy-related and traffic-induced air motions are secondary street-ventilation mechanisms compared

  13. A GIS-based Bayesian approach for analyzing spatial-temporal patterns of traffic crashes

    E-Print Network [OSTI]

    Li, Linhua

    2009-06-02T23:59:59.000Z

    This thesis develops a GIS-based Bayesian approach for area-wide traffic crash analysis. Five years of crash data from Houston, Texas, are analyzed using a geographic information system (GIS), and spatial-temporal patterns of relative crash risk...

  14. Combined Intra- and Inter-domain Traffic Engineering using Hot-Potato Aware Link Weights Optimization

    E-Print Network [OSTI]

    Balon, Simon

    2008-01-01T23:59:59.000Z

    A well-known approach to intradomain traffic engineering consists in finding the set of link weights that minimizes a network-wide objective function for a given intradomain traffic matrix. This approach is inadequate because it ignores a potential impact on interdomain routing. Indeed, the resulting set of link weights may trigger BGP to change the BGP next hop for some destination prefixes, to enforce hot-potato routing policies. In turn, this results in changes in the intradomain traffic matrix that have not been anticipated by the link weights optimizer, possibly leading to degraded network performance. We propose a BGP-aware link weights optimization method that takes these effects into account, and even turns them into an advantage. This method uses the interdomain traffic matrix and other available BGP data, to extend the intradomain topology with external virtual nodes and links, on which all the well-tuned heuristics of a classical link weights optimizer can be applied. A key innovative asset of our ...

  15. Lateral flow strip assay

    DOE Patents [OSTI]

    Miles, Robin R. (Danville, CA); Benett, William J. (Livermore, CA); Coleman, Matthew A. (Oakland, CA); Pearson, Francesca S. (Livermore, CA); Nasarabadi, Shanavaz L. (Livermore, CA)

    2011-03-08T23:59:59.000Z

    A lateral flow strip assay apparatus comprising a housing; a lateral flow strip in the housing, the lateral flow strip having a receiving portion; a sample collection unit; and a reagent reservoir. Saliva and/or buccal cells are collected from an individual using the sample collection unit. The sample collection unit is immersed in the reagent reservoir. The tip of the lateral flow strip is immersed in the reservoir and the reagent/sample mixture wicks up into the lateral flow strip to perform the assay.

  16. Traffic Analysis of UDP-based Flows in Ourmon Portland State University -Computer Science Technical Report -0807

    E-Print Network [OSTI]

    Binkley, Jim

    with them denial-of-service attacks, scans, spam and keylogging are rife [6, 8]. In addition, the relatively

  17. Phys. Rev. E 57, 1171 (1998) 1171 Density fluctuations and phase transition in the Nagel-Schreckenberg traffic flow

    E-Print Network [OSTI]

    Lübeck, Sven

    representing the acceler- ation, the slowing down, the noise, and the motion of the particles are done consider a one-dimensional cellular automaton of linear size L and N particles. Each particle is as and the dis- tance to the next forward particle [3]. For each particle, the following four update steps

  18. Successes of collaborative decision making at the Traffic Flow Management Program Office and the advantages of adopting toolkits

    E-Print Network [OSTI]

    Osuri, Vaynu

    2006-01-01T23:59:59.000Z

    Manufacturers, product designers and developers of products that have a large and diverse user base are consistently trying to produce products that satisfy as many users as possible. Manufacturers and product developers ...

  19. Cost and Performance Model for Redox Flow Batteries

    SciTech Connect (OSTI)

    Viswanathan, Vilayanur V.; Crawford, Aladsair J.; Stephenson, David E.; Kim, Soowhan; Wang, Wei; Li, Bin; Coffey, Greg W.; Thomsen, Edwin C.; Graff, Gordon L.; Balducci, Patrick J.; Kintner-Meyer, Michael CW; Sprenkle, Vincent L.

    2014-02-01T23:59:59.000Z

    A cost model was developed for all vanadium and iron-vanadium redox flow batteries. Electrochemical performance modeling was done to estimate stack performance at various power densities as a function of state of charge. This was supplemented with a shunt current model and a pumping loss model to estimate actual system efficiency. The operating parameters such as power density, flow rates and design parameters such as electrode aspect ratio, electrolyte flow channel dimensions were adjusted to maximize efficiency and minimize capital costs. Detailed cost estimates were obtained from various vendors to calculate cost estimates for present, realistic and optimistic scenarios. The main drivers for cost reduction for various chemistries were identified as a function of the energy to power ratio of the storage system. Levelized cost analysis further guided suitability of various chemistries for different applications.

  20. Surface Tension Adjustment in a Pseudo-Potential Lattice Boltzmann Model

    E-Print Network [OSTI]

    Hu, Anjie; Uddin, Rizwan

    2014-01-01T23:59:59.000Z

    Pseudo-potential lattice Boltzmann models have been widely applied in many multiphase simulations. However, most of these models still suffer from some drawbacks such as spurious velocities and untunable surface tension. In this paper, we aim to discuss the surface tension of a popular pseudo-potential model proposed by Kupershtokh et al., which has attracted much attention due to its simplicity and stability. The influence of a parameter on the surface tension in the model is analyzed. Based on the analysis, we proposed a method to adjust surface tension by changing the parameter in the model. However, the density distribution and the stability of the model also depend on the parameter. To adjust the surface tension independently, the pressure tensor modifying method is introduced and numerically tested. The simulation results show that, by applying the pressure tensor modifying method, the surface tension can be adjusted with little influence on the stability and density distributions.