Sample records for uniform traffic control

  1. 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...

  2. 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...

  3. 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...

  4. 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...

  5. 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

  6. 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 ...

  7. 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.

  8. 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

  9. 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...

  10. 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

  11. Apparatus and method for controlling plating uniformity

    DOE Patents [OSTI]

    Hachman Jr., John T.; Kelly, James J.; West, Alan C.

    2004-10-12T23:59:59.000Z

    The use of an insulating shield for improving the current distribution in an electrochemical plating bath is disclosed. Numerical analysis is used to evaluate the influence of shield shape and position on plating uniformity. Simulation results are compared to experimental data for nickel deposition from a nickel--sulfamate bath. The shield is shown to improve the average current density at a plating surface.

  12. 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

  13. 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

  14. 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...

  15. 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 ...

  16. 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...

  17. 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...

  18. 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...

  19. 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.

  20. 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...

  1. A controllable laser projector for diverting traffic

    E-Print Network [OSTI]

    Wu, Brian Xiuken

    2013-01-01T23:59:59.000Z

    For this Master's thesis, I designed and implemented a combined laser and controller system that can receive and convert commands from a computer into useful laser projections. In the last 10 years, on average, one police ...

  2. 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...

  3. 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...

  4. 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...

  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. Nuclear reactor control rod with uniformly changeable axial worth

    SciTech Connect (OSTI)

    Freeman, T.R.

    1987-11-17T23:59:59.000Z

    In combination with a fuel assembly having at least one hollow guide thimble, means to compensate for a reduction in reactivity occurring generally uniformly in a transverse direction and symmetric in the axial direction is described, comprising: (a) a control rod inserted in the guide thimble including (i) an elongated inner cylindrical member having a lower end, (ii) an elongated outer cylindrical member surrounding the inner member and having a lower end with concentrically-arranged lower inner and outer edge portions defined thereon, (iii) each of the members being composed of alternating poison and nonpoison regions, (iv) the inner member being axially movable relative to the outer member, (v) an outwardly projecting ledge adapted to support in a rest relationship the lower end of the outer member; and (b) means for retaining the outer member in a stationary position in the guide thimble while the inner member is movable axially relative thereto to adjust the degree to which the poison regions of the members overlap with the nonpoison regions and thereby change the overall worth of the rod. (c) The retaining means are in a lower portion of the guide thimble and sized to support the lower end of the outer member at its lower outer edge portion. The retaining means have a central hole sized to allow passage of the lower end and ledge of the inner member therethrough.

  7. 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

  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. 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...

  10. 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.

  11. 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

  12. 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), ...

  13. 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...

  14. 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

  15. 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

  16. 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 ...

  17. 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...

  18. Microfluidic device incorporating closed loop feedback control for uniform and tunable production of micro-droplets

    E-Print Network [OSTI]

    Rothstein, Jonathan

    Microfluidic device incorporating closed loop feedback control for uniform and tunable production, we have designed a microfluidic-based technology utilizing elementary microchannel geometries initial development using flow-focusing microfluidic geometry for droplet formation, computer

  19. Vibration control in plates by uniformly distributed PZT actuators interconnected via electric networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    improve the performances of piezoelectric actuation. internal resonance / equivalent circuits 1Vibration control in plates by uniformly distributed PZT actuators interconnected via electric vibrations of plates by means of a set of electrically-interconnected piezoelectric actuators is described

  20. 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

  1. 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

  2. Some exact controllability results for the linear KdV equation and uniform controllability in the zero-dispersion limit

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Some exact controllability results for the linear KdV equation and uniform controllability with controllability properties of linear and nonlinear Korteweg-de Vries equations in a bounded interval. First, we establish the null controllability of the linear equation via the left Dirichlet boundary condition, and its

  3. Nuclear reactor control rod with uniformly changeable axial worth

    SciTech Connect (OSTI)

    Freeman, T.R.

    1989-04-11T23:59:59.000Z

    A control rod is described for use in a nuclear reactor core to provide xenon compensation, comprising: (a) an elongated inner cylindrical member having a lower end; and (b) an elongated outer cylindrical member surrounding the inner member and having a lower end with concentrically-arranged inner and outer edge portions defined thereon; (c) each of the members being composed of alternating poison and nonpoison regions; (d) the inner member being axially movable relative to the outer member to adjust the degree to which the poison regions of the members overlap with the nonpoison regions thereof and thereby change the overall worth of the rod; and (e) the lower end of the inner member having defined thereon a radially outwardly projecting ledge for supporting in a rest relationship thereon the lower end of the outer member at only its inner edge portion for retaining the outer member about the inner member.

  4. 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

  5. Creating a Systems Engineering Approach for the Manual on Uniform Traffic Control Devices

    E-Print Network [OSTI]

    McNeal, Heather

    2010-07-14T23:59:59.000Z

    and distribute surveys to verify state-of-practice, 4) identify and develop models for general process, 5) select best model for general process, 6) create and apply TCD decision case studies, and 7) revise and recommend a final process. Item 1 is addressed... of these tools to the MUTCD would allow for a more formalized, unified decision-making process. The results of this research would be a TCD decision-making process that would have direct implementation into everyday practice. The development of case...

  6. 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...

  7. 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

  8. 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...

  9. 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

  10. 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

  11. 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

  12. 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...

  13. The International Symposium on Transportation and Traffic Theory 00 (2013) 119 Linear-Quadratic Model Predictive Control

    E-Print Network [OSTI]

    Nazarathy, Yoni

    2013-01-01T23:59:59.000Z

    al., 1996). The more recent works on traffic control systems have adopted results of modern control responsibility of Delft University of Technology Keywords: Model Predictive Control, Intelligent Transport System, Congestion Control 1. Introduction Increasing population and economic activities in modern societies have led

  14. Table lamp with dynamically controlled lighting distribution and uniformly illuminated luminous shade

    DOE Patents [OSTI]

    Siminovitch, Michael J. (Pinole, CA); Page, Erik R. (Berkeley, CA)

    2002-01-01T23:59:59.000Z

    A double lamp table or floor lamp lighting system has a pair of compact fluorescent lamps (CFLs) or other lamps arranged vertically, i.e. one lamp above the other, with a reflective septum in between. By selectively turning on one or both of the CFLs, down lighting, up lighting, or both up and down lighting is produced. The control system can also vary the light intensity from each CFL. The reflective septum ensures that almost all the light produced by each lamp will be directed into the desired light distribution pattern which is selected and easily changed by the user. In a particular configuration, the reflective septum is bowl shaped, with the upper CFL sitting in the bowl, and a luminous shade hanging down from the bowl. The lower CFL provides both task lighting and uniform shade luminance. Planar compact fluorescent lamps, e.g. circular CFLs, particularly oriented horizontally, are preferable. CFLs provide energy efficiency. However, other types of lamps, including incandescent, halogen, and LEDs can also be used in the fixture. The lighting system may be designed for the home, hospitality, office or other environments.

  15. AEC/APC Symposium XII, September 23-28, 2000 Control of Spatial Uniformity inControl of Spatial Uniformity in

    E-Print Network [OSTI]

    Nikolaou, Michael

    -28, 2000 ModelingModeling · Use Modular Plasma Reactor Simulator (MPRES) · Develop control-oriented reduced: ­ Aircraft landing ­ Batch chemical reactor control #12;AEC/APC Symposium XII, September 23-28, 2000 Feedback First-Principles ModelFirst-Principles Model Network model 1 2 3 4 #12;AEC/APC Symposium XII, September

  16. Uniform Distribution

    E-Print Network [OSTI]

    randomly and equally likely a point in that interval), the uniform distribution ... Roughly speaking, this means that from any distribution we can create the uniform.

  17. An evaluation of reduced amounts of advance traffic control for short duration and stop-and-go maintenance operations

    E-Print Network [OSTI]

    Balke, Kevin Neil

    1987-01-01T23:59:59.000Z

    of driver information as the traffic control setup for a short-term, minor maintenance operation. Four field studies were performed on a total of six candidate signing treatments with the cone taper. An additional two field studies that studied a total... of five of the candidate signing treatments without the cone taper were performed. Both lane distribution and erratic maneuvers were used to measure the performance of the candidate treatments. The results of these field studies indicated...

  18. Aggregate Rate Control for TCP Traffic Management http://www.cs.wpi.edu/goos/sigcomm-poster-04/arc-poster.pdf

    E-Print Network [OSTI]

    Claypool, Mark

    control- engineering principles to design an efficient controller for TCP traffic [1, 2, 3]. In modern control systems, propor- tional integral derivative (PID) designs dominate due to their simplicity AQM research from basic framework design into detailed controller design and practical implementation

  19. Control and diagnosis of temperature, density, and uniformity in x-ray heated iron/magnesium samples for opacity measurements

    SciTech Connect (OSTI)

    Nagayama, T.; Bailey, J. E.; Loisel, G.; Hansen, S. B.; Rochau, G. A. [Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States)] [Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States); Mancini, R. C. [Physics Department, University of Nevada, Reno, Nevada 89557 (United States)] [Physics Department, University of Nevada, Reno, Nevada 89557 (United States); MacFarlane, J. J.; Golovkin, I. [Prism Computational Sciences, Madison, Wisconsin 53703 (United States)] [Prism Computational Sciences, Madison, Wisconsin 53703 (United States)

    2014-05-15T23:59:59.000Z

    Experimental tests are in progress to evaluate the accuracy of the modeled iron opacity at solar interior conditions, in particular to better constrain the solar abundance problem [S. Basu and H. M. Antia, Phys. Rep. 457, 217 (2008)]. Here, we describe measurements addressing three of the key requirements for reliable opacity experiments: control of sample conditions, independent sample condition diagnostics, and verification of sample condition uniformity. The opacity samples consist of iron/magnesium layers tamped by plastic. By changing the plastic thicknesses, we have controlled the iron plasma conditions to reach (1) T{sub e}?=?167?±?3?eV and n{sub e}?=?(7.1?±?1.5)×?10{sup 21}?cm{sup ?3}, (2) T{sub e}?=?170?±?2?eV and n{sub e}?=?(2.0?±?0.2)?×?10{sup 22}?cm{sup ?3}, and (3) T{sub e}?=?196?±?6?eV and n{sub e}?=?(3.8?±?0.8)?×?10{sup 22}?cm{sup ?3}, which were measured by magnesium tracer K-shell spectroscopy. The opacity sample non-uniformity was directly measured by a separate experiment where Al is mixed into the side of the sample facing the radiation source and Mg into the other side. The iron condition was confirmed to be uniform within their measurement uncertainties by Al and Mg K-shell spectroscopy. The conditions are suitable for testing opacity calculations needed for modeling the solar interior, other stars, and high energy density plasmas.

  20. 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...

  1. 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.

  2. Best-effort Highway Traffic Congestion Control via Variable Speed Limits Carlos Canudas de Wit*

    E-Print Network [OSTI]

    Boyer, Edmond

    the vehicle conservation property. This model is used as a basis to design a simple "best-effort" controller-cell lumped model model is used as a basis to design a simple "best-effort" controller that reg- ulates (at-cell variable-length model. The subsequent sections presents the best-effort control design, and report some

  3. Pilot workload in the air transport environment : measurement, theory, and the influence of air traffic control

    E-Print Network [OSTI]

    Katz, Jeffrey G.

    1980-01-01T23:59:59.000Z

    The operating environment of an air transport crew is characterized by multiple interrupting tasks, these tasks being composed of a mixture of purely physical control and purely mental planning processes. Measurement of ...

  4. Development and evaluation of an arterial adaptive traffic signal control system using reinforcement learning

    E-Print Network [OSTI]

    Xie, Yuanchang

    2009-05-15T23:59:59.000Z

    control. Two different implementation schemes are considered. The first scheme uses a fixed phase sequence and variable cycle length, while the second one optimizes phase sequence in real time and is not constrained to the concept of cycle. Both schemes...

  5. 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...

  6. 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

  7. 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...

  8. 1184 IEEE TRANSACTIONS ON AUTOMATIC CONTROL, VOL. 53, NO. 5, JUNE 2008 Uniform Practical Nonlinear Output Regulation

    E-Print Network [OSTI]

    Boyer, Edmond

    regulation theory and advanced engineering applications. Simulation results regarding meaningful control results for linear systems (see [9]), in which the crucial concept of internal model-based regulator has parameter variations of internal model-based regulators has been addressed for the first time for nonlinear

  9. 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

  10. 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...

  11. UNIFORM POLICY Introduction

    E-Print Network [OSTI]

    Niebur, Ernst

    as determined by a specific course: · Navy blue uniform pants · Navy blue uniform skirt · Navy blue scrub top · Navy blue hose or navy sock with navy uniform shoes · Long white lab coat that includes School patch sewn on the left upper sleeve. A navy blue fleece with the school name embroidered on left breast

  12. Vehicle Traffic Control Signal Heads— Light Emitting Diode Circular Signal Supplement (VTCSH-LED). This replaced the so-called Interim LED Purchase Specifications,

    E-Print Network [OSTI]

    S. Behura

    Engineers ’ (ITE) specification for light-emitting diode (LED) circular traffic signals recently was updated (June 27, 2005) and published under the name

  13. 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 ...

  14. Speed and Path Control for Conflict-Free Flight in High Air Traffic Demand in Terminal Airspace

    E-Print Network [OSTI]

    Rezaei, Ali

    2013-01-01T23:59:59.000Z

    speed control in terminal airspace, AIAA Guidance,Separattomcompltant tn the terminal airspace, Part I: speedSeparattomcompltant tn the terminal airspace, Part II: speed

  15. 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...

  16. 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.

  17. 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

  18. 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

  19. 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

  20. 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

  1. 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

  2. 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.

  3. 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

  4. 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...

  5. 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

  6. 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

  7. 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

  8. 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...

  9. 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...

  10. 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 ...

  11. 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...

  12. 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.

  13. 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.

  14. 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

  15. Semiconductor lasers with uniform longitudinal intensity distribution

    SciTech Connect (OSTI)

    Schrans, T.; Yariv, A. (Department of Applied Physics 128-95, California Institute of Technology, Pasadena, California 91125 (USA))

    1990-04-16T23:59:59.000Z

    Power-dependent nonuniform longitudinal intensity distribution leading to spectral and spatial instabilities is a major problem in semiconductor lasers. It is shown theoretically that a proper choice of the longitudinal distribution of the gain as well as that of the magnitude of the grating coupling coefficient will lead to a uniform intensity distribution in distributed feedback lasers. We also show that the widely used phase, rather than magnitude, control of the coupling coefficient cannot lead to a uniform intensity distribution when the facet reflectivities are zero.

  16. 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...

  17. 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.

  18. 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.

  19. Control Tower Procedures Nolan, Chap 6

    E-Print Network [OSTI]

    1 1 Control Tower Procedures Nolan, Chap 6 2 Control Towers · Responsibilities: 1. Ensure Towers · VFR Towers ­ NOT delegated separation responsibility · Except initial departure traffic ­ ARTCC separates IFR traffic · Non-radar-approach control towers ­ Delegated IFR separation responsibility

  20. UNIFORM ELECTRONIC TRANSACTIONS ACT (1999)

    E-Print Network [OSTI]

    Shamos, Michael I.

    1999-01-01T23:59:59.000Z

    , MN 55402-1609, Business Law Section AMELIA H. BOSS, Tmple University, School of Law, 1719 N. Broad ON UNIFORM STATE LAWS and by it APPROVED AND RECOMMENDED FOR ENACTMENT IN ALL THE STATES at its ANNUAL NOTE AND COMMENTS Copyright© 1999 By NATIONAL CONFERENCE OF COMMISSIONERS ON UNIFORM STATE LAWS 1

  1. EGR Spatial Uniformity & Cylinder-Resolved Transients-Measurements...

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

    an EGR probe for assessing steady-state spatial uniformity and cylinder-resolved EGR dynamics. p-27yoo.pdf More Documents & Publications CumminsORNL-FEERC CRADA: NOx Control &...

  2. 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

  3. 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

  4. 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...

  5. 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.

  6. 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...

  7. Uniform asymptotic approximations of integrals 

    E-Print Network [OSTI]

    Khwaja, Sarah Farid

    2014-07-01T23:59:59.000Z

    In this thesis uniform asymptotic approximations of integrals are discussed. In order to derive these approximations, two well-known methods are used i.e., the saddle point method and the Bleistein method. To start with ...

  8. 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...

  9. 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

  10. 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

  11. 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

  12. 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 ...

  13. 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...

  14. 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 ...

  15. 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 ...

  16. Method for uniformly bending conduits

    DOE Patents [OSTI]

    Dekanich, S.J.

    1984-04-27T23:59:59.000Z

    The present invention is directed to a method for bending metal tubing through various radii while maintaining uniform cross section of the tubing. The present invention is practical by filling the tubing to a sufficient level with water, freezing the water to ice and bending the ice-filled tubing in a cooled die to the desired radius. The use of the ice as a filler material provides uniform cross-sectional bends of the tubing and upon removal of the ice provides an uncontaminated interior of the tubing which will enable it to be used in its intended application without encountering residual contaminants in the tubing due to the presence of the filler material.

  17. 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...

  18. 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 ...

  19. 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

  20. 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

  1. 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

  2. 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.

  3. 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

  4. 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

  5. Thomas Precession by Uniform Acceleration

    E-Print Network [OSTI]

    Miroslav Pardy

    2014-12-09T23:59:59.000Z

    We determine the nonlinear transformations between coordinate systems which are mutually in a constant symmetrical accelerated motion. The maximal acceleration limit follows from the kinematical origin and it is an analogue of the maximal velocity in special relativity. We derive the dependence of mass, length, time, Doppler effect, Cherenkov effect and transition radiation angle on acceleration as an analogue phenomena in special theory of relativity. The last application of our method is the Thomas precession by uniform acceleration with the possible role in the modern physics and cosmology. The comparison of derived results with other relativistic methods is necessary.

  6. Thomas Precession by Uniform Acceleration

    E-Print Network [OSTI]

    Pardy, Miroslav

    2015-01-01T23:59:59.000Z

    We determine the nonlinear transformations between coordinate systems which are mutually in a constant symmetrical accelerated motion. The maximal acceleration limit follows from the kinematical origin and it is an analogue of the maximal velocity in special relativity. We derive the dependence of mass, length, time, Doppler effect, Cherenkov effect and transition radiation angle on acceleration as an analogue phenomena in special theory of relativity. The last application of our method is the Thomas precession by uniform acceleration with the possible role in the modern physics and cosmology. The comparison of derived results with other relativistic methods is necessary.

  7. Evaluation of traffic signal controller transition methods

    E-Print Network [OSTI]

    Hamilton, Curtis Lloyd

    2000-01-01T23:59:59.000Z

    % capacity at the coordinated phase for the 30 minutes and at no volume for the remaining 5 minutes. The signal timing plans were fixed at a 120-second cycle length. The transition methods for each of the offset changes were tested to find the method...

  8. WHAT'S AHEAD IN 2014 Female Uniforms

    E-Print Network [OSTI]

    . Lightweight Navy Working Uniforms Also this spring, the Navy Uniform Matters office and the Navy Clothing uniforms made of different fabrics. If the evaluations are successful, Navy leadership will determine which served as CMC. I have 22 years of continuous Navy service that includes nine ships of various platforms

  9. Pipelined Circuit Switching: Analysis for the Torus with Non-Uniform Traffic

    E-Print Network [OSTI]

    Safaei, F.; Khonsari, A.; Fathy, M.; Ould-Khaoua, M.

    Safaei,F. Khonsari,A. Fathy,M. Ould-Khaoua,M. Journal of Systems Architecture, to appear Elsevier Science

  10. Uniformly dense polymeric foam body

    DOE Patents [OSTI]

    Whinnery Jr., Leroy

    2003-07-15T23:59:59.000Z

    A method for providing a uniformly dense polymer foam body having a density between about 0.013 g/cm.sup.3 to about 0.5 g/cm.sup.3 is disclosed. The method utilizes a thermally expandable polymer microsphere material wherein some of the microspheres are unexpanded and some are only partially expanded. It is shown that by mixing the two types of materials in appropriate ratios to achieve the desired bulk final density, filling a mold with this mixture so as to displace all or essentially all of the internal volume of the mold, heating the mold for a predetermined interval at a temperature above about 130.degree. C., and then cooling the mold to a temperature below 80.degree. C. the molded part achieves a bulk density which varies by less then about .+-.6% everywhere throughout the part volume.

  11. 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

  12. 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...

  13. Uniform-burning matrix burner

    DOE Patents [OSTI]

    Bohn, Mark S. (Golden, CO); Anselmo, Mark (Arvada, CO)

    2001-01-01T23:59:59.000Z

    Computer simulation was used in the development of an inward-burning, radial matrix gas burner and heat pipe heat exchanger. The burner and exchanger can be used to heat a Stirling engine on cloudy days when a solar dish, the normal source of heat, cannot be used. Geometrical requirements of the application forced the use of the inward burning approach, which presents difficulty in achieving a good flow distribution and air/fuel mixing. The present invention solved the problem by providing a plenum with just the right properties, which include good flow distribution and good air/fuel mixing with minimum residence time. CFD simulations were also used to help design the primary heat exchanger needed for this application which includes a plurality of pins emanating from the heat pipe. The system uses multiple inlet ports, an extended distance from the fuel inlet to the burner matrix, flow divider vanes, and a ring-shaped, porous grid to obtain a high-temperature uniform-heat radial burner. Ideal applications include dish/Stirling engines, steam reforming of hydrocarbons, glass working, and any process requiring high temperature heating of the outside surface of a cylindrical surface.

  14. About uniform regularity of collections of sets

    E-Print Network [OSTI]

    2013-10-15T23:59:59.000Z

    About uniform regularity of collections of sets. Alexander Y. Kruger · Nguyen H. Thao. Dedicated to Asen Dontchev on the occasion of his 65th birthday and.

  15. 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...

  16. 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

  17. 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, ...

  18. 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

  19. Uniform insulation applied-B ion diode

    DOE Patents [OSTI]

    Seidel, David B. (Albuquerque, NM); Slutz, Stephen A. (Albuquerque, NM)

    1988-01-01T23:59:59.000Z

    An applied-B field extraction ion diode has uniform insulation over an anode surface for increased efficiency. When the uniform insulation is accomplished with anode coils, and a charge-exchange foil is properly placed, the ions may be focused at a point on the z axis.

  20. Brachistochrone of a Spherical Uniform Mass Distribution

    E-Print Network [OSTI]

    David R. Mitchell

    2008-08-23T23:59:59.000Z

    We solve the brachistochrone problem for a particle travelling through a spherical mass distribution of uniform density. We examine the connection between this problem and the popular "gravity elevator" result. The solution is compared to the well known brachistochrone problem of a particle in a uniform gravitational field.

  1. Uniformity: uncovering the frontier of parallelism

    E-Print Network [OSTI]

    Woods, Damien

    fruitfully explored using polynomial time (semi-)uniform families of membrane systems. However, when(logi n)) time when using a poly- nomial number of processors, that is they are efficiently parallelisable current results for active membrane sys- tems using uniformity below P. Many of the systems we consider

  2. adaptive cruise 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 37 Traffic Flow...

  3. 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...

  4. 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,

  5. 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.

  6. 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

  7. THE UNIVERSITY OF NORTH TEXAS EXPORT CONTROLS

    E-Print Network [OSTI]

    Mohanty, Saraju P.

    Regulations ECCN Export Control Classification Number ECO Export Controls Officer ITAR International Traffic in Arms Regulations OFAC Office of Foreign Assets Control (U.S. Department of the Treasury) ORED Office1 ______________________________________________ THE UNIVERSITY OF NORTH TEXAS EXPORT CONTROLS

  8. 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

  9. 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

  10. Uniform flux dish concentrators for photovoltaic application

    SciTech Connect (OSTI)

    Jorgensen, G; Wendelin, T

    1992-05-01T23:59:59.000Z

    Researchers at the National Renewable Energy Laboratory (NREL) have designed a unique and innovative molded dish concentrator capable of producing a uniform flux profile on a flat target plane. Concentration levels of 100--200 suns, which are uniform over an area of several square inches, can be directly achieved for collection apertures of a reasonable size ({approximately}1.5-m diameter). Such performance would be immediately applicable to photovoltaic (PV) use. Economic concerns have shown that the proposed approach would be less expensive thatn Fresnel lens concepts or other dish concentrator designs that require complicated and costly receivers to mix the flux to obtain a uniform distribution. 12 refs.

  11. Models of Synthesis of Uniform Colloids and Nanocrystals

    E-Print Network [OSTI]

    Vyacheslav Gorshkov; Vladimir Privman

    2010-06-03T23:59:59.000Z

    We present modeling approaches to explain mechanisms of control of uniformity (narrow distribution) of sizes and shapes in synthesis of nanosize crystals and micron-size colloids. We consider those situations when the nanocrystals are formed by burst nucleation. The colloids are then self-assembled by aggregation of nanocrystals. The coupled kinetic processes are both controlled by diffusional transport, yielding well-defined colloid dispersions used in many applications. We address aspects of modeling of particle structure selection, ranging from nucleation to growth by aggregation and to mechanisms of emergence of particle shapes.

  12. 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

  13. 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

  14. 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

  15. 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

  16. 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...

  17. Electrode with transparent series resistance for uniform switching of optical modulation devices

    SciTech Connect (OSTI)

    Tench, D. Morgan (Camarillo, CA); Cunningham, Michael A. (Thousand Oaks, CA); Kobrin, Paul H. (Newbury Park, CA)

    2008-01-08T23:59:59.000Z

    Switching uniformity of an optical modulation device for controlling the propagation of electromagnetic radiation is improved by use of an electrode comprising an electrically resistive layer that is transparent to the radiation. The resistive layer is preferably an innerlayer of a wide-bandgap oxide sandwiched between layers of indium tin oxide or another transparent conductor, and may be of uniform thickness, or may be graded so as to provide further improvement in the switching uniformity. The electrode may be used with electrochromic and reversible electrochemical mirror (REM) smart window devices, as well as display devices based on various technologies.

  18. Carbon dioxide-assisted fabrication of highly uniform submicron...

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

    dioxide-assisted fabrication of highly uniform submicron-sized colloidal carbon spheres via hydrothermal carbonization Carbon dioxide-assisted fabrication of highly uniform...

  19. Bubbling Reactor Technology for Rapid Synthesis of Uniform, Small...

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

    Bubbling Reactor Technology for Rapid Synthesis of Uniform, Small MFI-Type Zeolite Crystals . Bubbling Reactor Technology for Rapid Synthesis of Uniform, Small MFI-Type Zeolite...

  20. Subsolutions That Are Close in the Uniform Norm Are Close in the Sobolev Norm as Well

    SciTech Connect (OSTI)

    Saleem, Muhammad Shoaib, E-mail: shaby455@yahoo.com; Shashiashvili, Malkhaz, E-mail: mshashiashvili@yahoo.com [GC University, Abdus Salam School of Mathematical Sciences (Pakistan)

    2012-08-15T23:59:59.000Z

    A new type weighted reverse Poincare inequality is established for a difference of two continuous weak subsolutions of a linear second order uniformly elliptic partial differential equation in the ball.This result is the key to deriving the error estimate for the gradient of the analytically unknown value function of the optimal stochastic control problem from the uniform error of the value function itself in the related numerical approximation problems.

  1. Non-Uniform Entropy Compression for Uniform Energy Distribution in Wireless Sensor Networks

    E-Print Network [OSTI]

    California at Davis, University of

    -non-homogeneity in the network. Bottleneck nodes trade computation energy for transmission energy, which extends and normalizesNon-Uniform Entropy Compression for Uniform Energy Distribution in Wireless Sensor Networks to increase the network's lifetime and to normalize the energy use per unit time, but they each have

  2. Ground controlled precision landing delivery in the presence of radar disturbances

    E-Print Network [OSTI]

    Durocher, Cort Louis

    1977-01-01T23:59:59.000Z

    Introduction: The purpose of Air Traffic Control is to ensure separation of aircraft in the most efficient manner possible. The need for efficiency is becoming more important as air traffic continues to increase at a high ...

  3. Synthesis of provably correct controllers for autonomous vehicles in urban environments

    E-Print Network [OSTI]

    Wongpiromsarn, Tichakorn

    This paper considers automatic synthesis of provably correct controllers for autonomous vehicles operating in an urban environment populated with static obstacles and live traffic. We express traffic rules such as collision ...

  4. 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

  5. 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

  6. 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.

  7. 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. ...

  8. 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...

  9. 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...

  10. Candidate Performance 2013 Uniform CPA Examination

    E-Print Network [OSTI]

    Huang, Haiying

    San Marcos 47 55.8% 13 West Texas A&M University 20 55.3% 14 Sam Houston State University 32 46.7% 15 of Texas - Arlington 67 77.8 5 Texas Christian University 30 75.5 6 West Texas A&M University 20 75.3 7Candidate Performance 2013 Uniform CPA Examination First-Time Texas Candidates with Advanced

  11. Processing of materials for uniform field emission

    DOE Patents [OSTI]

    Pam, Lawrence S. (Pleasanton, CA); Felter, Thomas E. (Livermore, CA); Talin, Alec (Livermore, CA); Ohlberg, Douglas (Mountain View, CA); Fox, Ciaran (Stanford, CA); Han, Sung (Pojoaque, NM)

    1999-01-01T23:59:59.000Z

    This method produces a field emitter material having a uniform electron emitting surface and a low turn-on voltage. Field emitter materials having uniform electron emitting surfaces as large as 1 square meter and turn-on voltages as low as 16V/.mu.m can be produced from films of electron emitting materials such as polycrystalline diamond, diamond-like carbon, graphite and amorphous carbon by the method of the present invention. The process involves conditioning the surface of a field emitter material by applying an electric field to the surface, preferably by scanning the surface of the field emitter material with an electrode maintained at a fixed distance of at least 3 .mu.m above the surface of the field emitter material and at a voltage of at least 500V. In order to enhance the uniformity of electron emission the step of conditioning can be preceeded by ion implanting carbon, nitrogen, argon, oxygen or hydrogen into the surface layers of the field emitter material.

  12. Processing of materials for uniform field emission

    DOE Patents [OSTI]

    Pam, L.S.; Felter, T.E.; Talin, A.; Ohlberg, D.; Fox, C.; Han, S.

    1999-01-12T23:59:59.000Z

    This method produces a field emitter material having a uniform electron emitting surface and a low turn-on voltage. Field emitter materials having uniform electron emitting surfaces as large as 1 square meter and turn-on voltages as low as 16V/{micro}m can be produced from films of electron emitting materials such as polycrystalline diamond, diamond-like carbon, graphite and amorphous carbon by the method of the present invention. The process involves conditioning the surface of a field emitter material by applying an electric field to the surface, preferably by scanning the surface of the field emitter material with an electrode maintained at a fixed distance of at least 3 {micro}m above the surface of the field emitter material and at a voltage of at least 500V. In order to enhance the uniformity of electron emission the step of conditioning can be preceded by ion implanting carbon, nitrogen, argon, oxygen or hydrogen into the surface layers of the field emitter material. 2 figs.

  13. 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

  14. A relief route is a segment of a highway that moves traffic around the central business district of a city.

    E-Print Network [OSTI]

    Kockelman, Kara M.

    that had high per capita traffic volumes. In addition, city demo- graphics, regional trends, and proximity study by Yeh et al. (1998) used case study and survey and control-area methodology involving a nonpaired comparison of bypasses and control cities. An analysis of sales and employment data, travel surveys

  15. 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

  16. 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

  17. 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

  18. 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

  19. 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

  20. 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

  1. 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...

  2. 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...

  3. 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

  4. 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...

  5. 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.

  6. Uniform Methods Project Contacts | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you sureReportsofDepartmentSeries | DepartmentResources Program |» Uniform

  7. Uniform System of Accounts for Gas Utilities (Maine)

    Broader source: Energy.gov [DOE]

    This rule establishes a uniform system of accounts and annual report filing requirements for natural gas utilities operating in Maine.

  8. The Power of Non-Uniform Wireless Power Magnus M. Halldorsson

    E-Print Network [OSTI]

    The Power of Non-Uniform Wireless Power Magn´us M. Halld´orsson Stephan Holzer Pradipta Mitra Roger model when power control is available. This measure characterizes the effectiveness of using oblivious power -- when the power used by a transmitter only depends on the distance to the receiver

  9. 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.

  10. 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.

  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. 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...

  13. 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.

  14. 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.

  15. 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

  16. 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...

  17. 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.

  18. 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...

  19. Uniform Fin Sizes versus Uniform Fin Root Temperatures for Unsymmetrically Obstructed Solar Probe RTGs

    SciTech Connect (OSTI)

    Schock, Alfred; Or, Chuen T; Noravian, Heros

    1991-08-01T23:59:59.000Z

    Paper presented at the 26th IECEC, August 4-9, 1991 in Boston, MA. The Solar Probe will approach the sun within four solar radii or 0.02 AU. Because of that proximity, the spacecraft must be protected by a thermal shield. The protected umbra is a cone of 4 m diameter and 7.5 m height, and all temperature-sensitive flight components must fit within that cone. Therefore, the RTGs which power the Solar probe cannot be separated from each other and from other payload components by deploying them on long booms. They must be located near and thermally isolated from the spacecraft's paylod. This paper compares the performance of such variable-fin RTGs with that of uniform-fin RTGs. It derives the fin dimensions required for circumferential isothermicity, identifies a design that maximizes the RTGs specific power, and proves the practicality of that design option. However, detailed thermal and electrical analyses led to the somewhat surprising conclusion that (for a given thermal power) the non-uniform-fin design results in the same power output, at a higher maximum hot-junction temperature, as the standard uniform-fin design, despite the latter's nonuniform cold-junction temperatures. There are three copies in the file.

  20. Foundations for Uniform Interpolation and Forgetting in Expressive Description Logics

    E-Print Network [OSTI]

    Lutz, Carsten

    2011-01-01T23:59:59.000Z

    We study uniform interpolation and forgetting in the description logic ALC. Our main results are model-theoretic characterizations of uniform inter- polants and their existence in terms of bisimula- tions, tight complexity bounds for deciding the existence of uniform interpolants, an approach to computing interpolants when they exist, and tight bounds on their size. We use a mix of model- theoretic and automata-theoretic methods that, as a by-product, also provides characterizations of and decision procedures for conservative extensions.

  1. Human-System Safety Methods for Development of Advanced Air Traffic Management Systems

    SciTech Connect (OSTI)

    Nelson, W.R.

    1999-05-24T23:59:59.000Z

    The Idaho National Engineering and Environmental Laboratory (INEEL) is supporting the National Aeronautics and Space Administration in the development of advanced air traffic management (ATM) systems as part of the Advanced Air Transportation Technologies program. As part of this program INEEL conducted a survey of human-system safety methods that have been applied to complex technical systems, to identify lessons learned from these applications and provide recommendations for the development of advanced ATM systems. The domains that were surveyed included offshore oil and gas, commercial nuclear power, commercial aviation, and military. The survey showed that widely different approaches are used in these industries, and that the methods used range from very high-level, qualitative approaches to very detailed quantitative methods such as human reliability analysis (HRA) and probabilistic safety assessment (PSA). In addition, the industries varied widely in how effectively they incorporate human-system safety assessment in the design, development, and testing of complex technical systems. In spite of the lack of uniformity in the approaches and methods used, it was found that methods are available that can be combined and adapted to support the development of advanced air traffic management systems.

  2. 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

  3. 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

  4. 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

  5. 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.

  6. 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...

  7. 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

  8. 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

  9. On the Uniform Boundedness of the

    E-Print Network [OSTI]

    the gravitational terms, and u is the input vector. Z .Although the equations given in 1 are complex nonlinear and analysis of control Z . 2, 4 laws for 1 , namely, its positive definiteness and its boundedness. Positive

  10. Formally Verified Rapid Prototyping for Air Traffic Control

    E-Print Network [OSTI]

    Sage, M.; Johnson, C.W.

    Sage,M. Johnson,C.W. Proceedings of the Third Workshop on Human Error, Safety and Systems Development Psychologie du Travail et des Entreprises, Universite de Liege

  11. Environmental Assessment for Proposed Access Control and Traffic...

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

    or hazardous constituents as defined by RCRA are called AOCs. The different geologic media of the canyons system-sediments, aquifers, and parent material-are categorized as...

  12. Capacity-aware back-pressure traffic signal control

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    load, one must wonder whether the network is used at its maximum capacity. Vehicle automation is expected to enable much more precise and intelligent coordination between vehicles, possibly reducing congestion [1]. However, automated cars are not currently ready for large commercial deployment. Human

  13. History of Air Traffic Control Nolan, Chap 1

    E-Print Network [OSTI]

    of Radar ­ Creation of Federal Aviation Administration 6. 1965 ­ Present: ­ Department of Transportation effect" 3. Politics plays a significant role in FAA decision-making 1. Example, closing outdated facilities very difficult 4. Conflicting objectives (1) promote aviation, (2) build capacity, (3) maintain

  14. Multiagent Traffic Management: An Improved Intersection Control Mechanism

    E-Print Network [OSTI]

    Yu, Bin

    that autonomous vehicle navigation will be possible in the near future. Individual cars can now be equipped such capabilities, thus opening up the possibility of autonomous interactions among multiple vehicles. Permission and decreased standard of living in urban settings. Recent advances in artificial intelligence suggest vehicle

  15. Madsen and the Face Act: Abortion Rights or Traffic Control

    E-Print Network [OSTI]

    Figueroa, Evelyn; Kurth, Mette

    1994-01-01T23:59:59.000Z

    criminal penalties, and (3) a private cause of action. Oneand criminal penalties 63 as well as a private cause of action.

  16. The design of a traffic control system with distributed intelligence

    E-Print Network [OSTI]

    Tietjen, Donald Louis

    1973-01-01T23:59:59.000Z

    detection and cor- rection as a safety feature for the communication network. ACKNOIAILEDGEMENTS The author wishes to express his thanks and gratitude to Dr. V. Thomas Rhyne and Dr. Philip S. Noe for the time they spent and the pat1ence they showed... during the research and preparat1on of this paper, and for their invaluable advise and suggestions in this presentation. The author would also like to thank Dr. Robert Anderson for his assistance in preparing this document. The gra- titudee...

  17. 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

  18. 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

  19. 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

  20. 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

  1. 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

  2. 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

  3. 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.

  4. 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

  5. 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

  6. Airspace structure, future ATC systems, and controller complexity reduction

    E-Print Network [OSTI]

    Histon, Jonathan

    Airspace structure is a key factor influencing controller cognitive complexity as it forms a basis for abstractions simplifying controller mental models of air traffic situations. In evaluating the feasibility of new ...

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

    E-Print Network [OSTI]

    Jain, Saurabh

    2009-05-15T23:59:59.000Z

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

  8. Wavelet Estimation For Samples With Random Uniform Design

    E-Print Network [OSTI]

    Brown, Lawrence D.

    Wavelet Estimation For Samples With Random Uniform Design T. Tony Cai Department of Statistics that for nonparametric regression if the samples have random uniform design, the wavelet method with universal. Simulation result is also discussed. Keywords: wavelets, nonparametric regression, minimax, adaptivity

  9. 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 ...

  10. Uniform Trade Secrets Act (Drafted by the National Conference of Commissioners on Uniform State Laws, as amended 1985)

    E-Print Network [OSTI]

    Shamos, Michael I.

    Uniform Trade Secrets Act (Drafted by the National Conference of Commissioners on Uniform State) acquisition of a trade secret of another by a person who knows or has reason to know that the trade secret was acquired by improper means; or (ii) disclosure or use of a trade secret of another without express

  11. A study of selected criteria for real time control of intersections

    E-Print Network [OSTI]

    Romano, Elio Joseph

    1973-01-01T23:59:59.000Z

    criteria, used in the real time computer control of traffic, form the ob)ectives of this thesis. Traffic operations data were obtained from research work carried out on the Dallas Corridor Pro)act and the Houston Surveillance Project where computer... traffic control systems were in operation. Operational criteria, which includee tha prediction and use of vehicle arrivals, progression from intersection to intersection and tha effects of various move- ments wi'thin the intersection, were analyzed...

  12. On uniform continuity of Cauchy's function and uniform convergence of Cauchy's integral formula with applications

    E-Print Network [OSTI]

    Theodore Yaotsu Wu

    2007-12-29T23:59:59.000Z

    This study is on Cauchy's function $f(z)$ and its integral, $J[f(z)]\\equiv (2\\pi i)^{-1}\\oint_C f(t)dt/(t-z)$ taken along a closed simple contour $C$, in regard to their comprehensive properties over the entire $z=x+iy$ plane consisted of the open domain ${\\cal D}^+$ bounded by $C$ and the open domain ${\\cal D}^-$ outside $C$. (i) With $f(z)$ assumed to be $C^n$ ($n$ times continuously differentiable) $\\forall z\\in {\\cal D}^+$ and in a neighborhood of $C$, $f(z)$ and its derivatives $f^{(n)}(z)$ are proved uniformly continuous in the closed domain $\\bar{{\\cal D}^+}=[\\cal D^++C]$. (ii) Under this new assumption, integral $J[f(z)]$ and its derivatives $J_n[f(z)]=d^n J[f(z)]/dz^n$ are proved to converge uniformly in $\\bar{{\\cal D}^+}$, thereby rendering the integral formula valid over the entire $z$-plane. (iii) The same claims (as for $f(z)$ and $J[f(z)]$) are shown extended to hold for the complement function $F(z)$, defined to be $C^n \\forall z\\in \\bar{{\\cal D}^-}=[\\cal D^-+C]$, in $\\bar{{\\cal D}^-}$. (iv) Further, the singularity distribution of $f(z)$ in ${\\cal D}^-$ (existing unless $f(z)\\equiv$ const.in the $z$-plane) is elucidated by considering the direct problem exemplified with several typical singularities prescribed in ${\\cal D}^-$. (v) The uniform convergence theorems for $f(z)$ and $F(z)$ shown for contour $C$ of arbitrary shape are adapted to apply to special domains in the upper or lower half $z$-planes and those inside and outside the unit circle $|z|=1$ to achieve the generalized Hilbert transforms for these cases. (vi) Finally, an unsolved inverse problem to determine all the singularities of Cauchy function $f(z)$ in domain ${\\cal D}^-$ is presented for resolution as a conjecture.

  13. 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...

  14. 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

  15. 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;

  16. alignment uniformity analysis: Topics by E-print Network

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

    190 A Uniform Analysis of 118 Stars with High-Contrast Imaging: Long Period Extrasolar Giant Planets are Rare around Sun-like Stars CERN Preprints Summary: We expand on the...

  17. Sufficient Conditions for Uniform Stability of Regularization Algorithms

    E-Print Network [OSTI]

    Poggio, Tomaso

    2009-12-01T23:59:59.000Z

    In this paper, we study the stability and generalization properties of penalized empirical-risk minimization algorithms. We propose a set of properties of the penalty term that is sufficient to ensure uniform ?-stability: ...

  18. Structural Response Evaluation Using Non-Uniform Sensor Arrays

    E-Print Network [OSTI]

    Fang, Maopeng

    2013-10-03T23:59:59.000Z

    and buoyancy elements. With laboratory data, the study demonstrated that airfoil fairings, ribbon fairings and helical strakes can all effectively suppress the undesired vibrations in a uniform current; however, the first two devices were not quite effective...

  19. Uniform Gauge for D1-brane in General Background

    E-Print Network [OSTI]

    Kluson, J

    2015-01-01T23:59:59.000Z

    We construct uniform gauge D1-brane action in general background. We also discuss how this action transforms under double Wick rotation and determine transformation properties of background fields.

  20. Uniform Diffusion of Acetonitrile inside Carbon Nanotubes Favors

    E-Print Network [OSTI]

    materials. Nanoporous carbon exhibits excellent charge-discharge properties and a stable cyclic life. Moreover, activated composite carbon films generate high specific capacitance, laying the foundationUniform Diffusion of Acetonitrile inside Carbon Nanotubes Favors Supercapacitor Performance Oleg N

  1. Ferrofluid surface and volume flows in uniform rotating magnetic fields

    E-Print Network [OSTI]

    Elborai, Shihab M. (Shihab Mahmoud), 1977-

    2006-01-01T23:59:59.000Z

    Ferrofluid surface and volume effects in uniform dc and rotating magnetic fields are studied. Theory and corroborating measurements are presented for meniscus shapes and resulting surface driven flows, spin-up flows, and ...

  2. Fitness Uniform Deletion: A Simple Way to Preserve Diversity

    E-Print Network [OSTI]

    Hutter, Marcus

    is the gradual decline in population diversity that tends to occur over time. This can slow a system's progress. In this paper we present the Fitness Uniform Deletion Scheme (FUDS), a simple but somewhat unconventional ap

  3. Uniformity of fuel target implosion in Heavy Ion Fusion

    E-Print Network [OSTI]

    Kawata, S; Suzuki, T; Karino, T; Barada, D; Ogoyski, A I; Ma, Y Y

    2015-01-01T23:59:59.000Z

    In inertial confinement fusion the target implosion non-uniformity is introduced by a driver beams' illumination non-uniformity, a fuel target alignment error in a fusion reactor, the target fabrication defect, et al. For a steady operation of a fusion power plant the target implosion should be robust against the implosion non-uniformities. In this paper the requirement for the implosion uniformity is first discussed. The implosion uniformity should be less than a few percent. A study on the fuel hotspot dynamics is also presented and shows that the stagnating plasma fluid provides a significant enhancement of vorticity at the final stage of the fuel stagnation. Then non-uniformity mitigation mechanisms of the heavy ion beam (HIB) illumination are also briefly discussed in heavy ion inertial fusion (HIF). A density valley appears in the energy absorber, and the large-scale density valley also works as a radiation energy confinement layer, which contributes to a radiation energy smoothing. In HIF a wobbling he...

  4. 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...

  5. 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...

  6. 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...

  7. 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

  8. 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 ...

  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. Method and apparatus for measuring spatial uniformity of radiation

    DOE Patents [OSTI]

    Field, Halden (Boulder, CO)

    2002-01-01T23:59:59.000Z

    A method and apparatus for measuring the spatial uniformity of the intensity of a radiation beam from a radiation source based on a single sampling time and/or a single pulse of radiation. The measuring apparatus includes a plurality of radiation detectors positioned on planar mounting plate to form a radiation receiving area that has a shape and size approximating the size and shape of the cross section of the radiation beam. The detectors concurrently receive portions of the radiation beam and transmit electrical signals representative of the intensity of impinging radiation to a signal processor circuit connected to each of the detectors and adapted to concurrently receive the electrical signals from the detectors and process with a central processing unit (CPU) the signals to determine intensities of the radiation impinging at each detector location. The CPU displays the determined intensities and relative intensity values corresponding to each detector location to an operator of the measuring apparatus on an included data display device. Concurrent sampling of each detector is achieved by connecting to each detector a sample and hold circuit that is configured to track the signal and store it upon receipt of a "capture" signal. A switching device then selectively retrieves the signals and transmits the signals to the CPU through a single analog to digital (A/D) converter. The "capture" signal. is then removed from the sample-and-hold circuits. Alternatively, concurrent sampling is achieved by providing an A/D converter for each detector, each of which transmits a corresponding digital signal to the CPU. The sampling or reading of the detector signals can be controlled by the CPU or level-detection and timing circuit.

  15. 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...

  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. http://tti.tamu.edu > Variable message signs > Traffic actuated controllers > Traffic signals > Flashing traffic signals > Lane use control signals > Road markings > Rumble strips > Warrants (Traffic control devices) > Gro

    E-Print Network [OSTI]

    agencies and private- sector companies on the design, construction, testing and evaluation of highway railings > Transportation corridors > Streambeds > Pipelin Street lighting > Freeways > Highways > Arterial > Light emitting diodes > Portable equipment > Construction equipment > Roadbuilding machinery

  18. 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

  19. 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.

  20. Optimization, Characterization and Commissioning of a Novel Uniform Scanning Proton Beam Delivery System

    E-Print Network [OSTI]

    Mascia, Anthony Edward

    2013-01-01T23:59:59.000Z

    K, Smith A, Zhu X. “Commissioning of the discrete spotCharacterization and Commissioning of a Novel UniformCharacterization and Commissioning of a Novel Uniform

  1. Emergency evacuation/transportation plan update: Traffic model development and evaluation of early closure procedures. Final report

    SciTech Connect (OSTI)

    NONE

    1993-10-28T23:59:59.000Z

    Prolonged delays in traffic experienced by Laboratory personnel during a recent early dismissal in inclement weather, coupled with reconstruction efforts along NM 502 east of the White Rock Wye for the next 1 to 2 years, has prompted Los Alamos National Laboratory (LANL) to re-evaluate and improve the present transportation plan and its integration with contingency plans maintained in other organizations. Facilities planners and emergency operations staff need to evaluate the transportation system`s capability to inefficiently and safely evacuate LANL under different low-level emergency conditions. A variety of potential procedures governing the release of employees from the different technical areas (TAs) requires evaluation, perhaps with regard to multiple emergency-condition scenarios, with one or more optimal procedures ultimately presented for adoption by Lab Management. The work undertaken in this project will hopefully lay a foundation for an on-going, progressive transportation system analysis capability. It utilizes microscale simulation techniques to affirm, reassess and validate the Laboratory`s Early Dismissal/Closure/Delayed Opening Plan. The Laboratory is required by Federal guidelines, and compelled by prudent practice and conscientious regard for the welfare of employees and nearby residents, to maintain plans and operating procedures for evacuation if the need arises. The tools developed during this process can be used outside of contingency planning. It is anticipated that the traffic models developed will allow site planners to evaluate changes to the traffic network which could better serve the normal traffic levels. Changes in roadway configuration, control strategies (signalization and signing), response strategies to traffic accidents, and patterns of demand can be modelled using the analysis tools developed during this project. Such scenarios typically are important considerations in master planning and facilities programming.

  2. Method to produce large, uniform hollow spherical shells

    DOE Patents [OSTI]

    Hendricks, C.D.

    1983-09-26T23:59:59.000Z

    The invention is a method to produce large uniform hollow spherical shells by (1) forming uniform size drops of heat decomposable or vaporizable material, (2) evaporating the drops to form dried particles, (3) coating the dried particles with a layer of shell forming material and (4) heating the composite particles to melt the outer layer and to decompose or vaporize the inner particle to form an expanding inner gas bubble. The expanding gas bubble forms the molten outer layer into a shell of relatively large diameter. By cycling the temperature and pressure on the molten shell, nonuniformities in wall thickness can be reduced. The method of the invention is utilized to produce large uniform spherical shells, in the millimeter to centimeter diameter size range, from a variety of materials and of high quality, including sphericity, concentricity and surface smoothness, for use as laser fusion or other inertial confinement fusion targets as well as other applications.

  3. Augmented down-up algebras and uniform posets

    E-Print Network [OSTI]

    Terwilliger, Paul

    2012-01-01T23:59:59.000Z

    Motivated by the structure of the uniform posets we introduce the notion of an augmented down-up (or ADU) algebra. We discuss how ADU algebras are related to the down-up algebras defined by Benkart and Roby. For each ADU algebra we give two presentations by generators and relations. We also display a $Z$-grading and a linear basis. In addition we show that the center is isomorphic to a polynomial algebra in two variables. We display seven families of uniform posets and show that each gives an ADU algebra module in a natural way. The main inspiration for the ADU algebra concept comes from the second author's thesis concerning a type of uniform poset constructed using a dual polar graph.

  4. Polyelectrolytes polarization in non-uniform electric fields

    E-Print Network [OSTI]

    Farnoush Farahpour; Fathollah Varnik; Mohammad Reza Ejtehadi

    2014-11-16T23:59:59.000Z

    Stretching dynamics of polymers in microfluidics is of particular interest for polymer scientists. As a charged polymer, a polyelectrolyte can be deformed from its coiled equilibrium configuration to an extended chain by applying uniform or non-uniform electric fields. By means of hybrid lattice Boltzmann-molecular dynamics simulations, we investigate how the condensed counterions around the polyelectrolyte contribute to the polymer stretching in inhomogeneous fields. As an application, we discuss the translocation phenomena and entropic traps, when the driving force is an applied external electric field.

  5. Evaluation of the application uniformity of subsurface drip distribution systems

    E-Print Network [OSTI]

    Weynand, Vance Leo

    2004-09-30T23:59:59.000Z

    . Methods of comparison of statistical uniformity (ASAE, 1999). Method Acceptability Statistical Uniformity, Us (%) Excellent 100-95 Good 90-85 Fair 80-75 Poor 70-65 Unacceptable <60 ASAE (1983) also represents flow variation through... configured to run up and down slopes of 0, 1, 2, and 4% and were also oriented on contours of 1 and 2%. The test system was constructed of 2.54 cm (1 in) square tubing frame 2.74 m long by 66 cm wide (9 ft by 26 in) with adjustable 2.54 cm (1 in) square...

  6. automatic cruise 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 29 FIELD EVALUATION OF...

  7. autonomous intelligent cruise 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 5 An Intelligent...

  8. RoadRunner: Infrastructure-less vehicular congestion control

    E-Print Network [OSTI]

    Gao, Jason Hao

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

  9. Predictive models of procedural human supervisory control behavior

    E-Print Network [OSTI]

    Boussemart, Yves, 1980-

    2011-01-01T23:59:59.000Z

    Human supervisory control systems are characterized by the computer-mediated nature of the interactions between one or more operators and a given task. Nuclear power plants, air traffic management and unmanned vehicles ...

  10. An investigation of factors affecting intersection control by volume density actuated equipment

    E-Print Network [OSTI]

    Radke, Milton L

    1966-01-01T23:59:59.000Z

    Officer, for having been afforded the opportunity to investigate the capabilities of the volume density signal controllers to perform their designed functions. The author is indebted to Mr. Warren Farrell and the Traffic Engineering Department... controllers (Figure I) into the signal industry, a new concept of intersection control was initiated. The volume density controller is a form of analog computer with its operational features designed to produce maximum efficiency in the movement of traffic...

  11. The Power of Non-Uniform Wireless Power

    E-Print Network [OSTI]

    The Power of Non-Uniform Wireless Power ETH Zurich ­ Distributed Computing Group Magnus M-To-Interference-Plus-Noise Ratio (SINR) Formula Minimum signal- to-interference ratio Power level of sender u Path-loss exponent Noise Distance between two nodes Received signal power from sender Received signal power from all other

  12. A Resources Virtualization Approach Supporting Uniform Access to Heterogeneous

    E-Print Network [OSTI]

    Keinan, Alon

    A Resources Virtualization Approach Supporting Uniform Access to Heterogeneous Grid Resources1 of resources such as computing resources, storage resources, instrument resources, data resources, etc. However, because of the differences of formats, descriptions, structures, and access modes of these resources, grid

  13. A Uniform Type Structure for Secure Information KOHEI HONDA

    E-Print Network [OSTI]

    Gay, Simon

    A Uniform Type Structure for Secure Information Flow KOHEI HONDA Queen Mary, University of London . . . . . . . . . . . . . . . . . 13 Author's address: K. Honda, Department of Computer Science, Queen Mary, University of London, Mile, Vol. TBD, No. TDB, Month Year, Pages 1--83. #12; 2 · Kohei Honda and Nobuko Yoshida 2.5 Linear

  14. A Uniform Type Structure for Secure Information KOHEI HONDA

    E-Print Network [OSTI]

    Honda, Kohei

    A Uniform Type Structure for Secure Information Flow KOHEI HONDA Queen Mary, University of London . . . . . . . . . . . . . . . . . 13 Author's address: K. Honda, Department of Computer Science, Queen Mary, University of London, Mile. TBD, No. TDB, Month Year, Pages 1­83. #12;2 · Kohei Honda and Nobuko Yoshida 2.5 Linear/Affine Typing

  15. Demand and Production Management with Uniform Guaranteed Lead Time

    E-Print Network [OSTI]

    Swaminathan, Jayashankar M.

    Demand and Production Management with Uniform Guaranteed Lead Time Uday S. Rao Jayashankar M Recently, innovation-oriented firms have been competing along dimensions other than price - lead time being one such dimension. Increasingly, customers are favoring lead time guarantees as a means to hedge

  16. Boosting Data Center Performance Through Non-Uniform Power Allocation

    E-Print Network [OSTI]

    Young, R. Michael

    Data center power management is evolving from ad hoc methods based on maximum node power usage capacity. A conservative power management ap- proach is to ensure the maximum power consumption of all, dynamic algorithm to manage power globally in server clusters with non-uniform workloads. #12;This

  17. OVERWEIGHT DEFORMATIONS OF AFFINE TORIC VARIETIES AND LOCAL UNIFORMIZATION

    E-Print Network [OSTI]

    uniformization for Abhyankar valuations of algebraic function fields and also uses toroidal methods and phrases. Toric geometry, Valuations, Key polynomials. 1 hal-00933721,version2-31Mar2014 #12;2 Abstract. A valuation of a local domain (R, m) is the datum of a valuation ring (R , m ) of the fraction field K of R

  18. Vacuum polarization induced by a uniformly accelerated charge

    E-Print Network [OSTI]

    B. Linet

    1995-03-30T23:59:59.000Z

    We consider a point charge fixed in the Rindler coordinates which describe a uniformly accelerated frame. We determine an integral expression of the induced charge density due to the vacuum polarization at the first order in the fine structure constant. In the case where the acceleration is weak, we give explicitly the induced electrostatic potential.

  19. Spin flip probability of electron in a uniform magnetic field

    SciTech Connect (OSTI)

    Hammond, Richard T. [Department of Physics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina and Army Research Office, Research Triangle Park, North Carolina 27703 (United States)

    2012-03-19T23:59:59.000Z

    The probability that an electromagnetic wave can flip the spin of an electron is calculated. It is assumed that the electron resides in a uniform magnetic field and interacts with an incoming electromagnetic pulse. The scattering matrix is constructed and the time needed to flip the spin is calculated.

  20. Lyapunov Exponents and Uniform Weak Normally Repelling Invariant Sets

    E-Print Network [OSTI]

    Smith, Hal

    Lyapunov Exponents and Uniform Weak Normally Repelling Invariant Sets Paul Leonard Salceanu and Hal repelling in directions normal to the boundary in which M resides provided all normal Lyapunov exponents that Lyapunov exponents can be used to establish the requisite repelling properties for both discrete

  1. Uniformity of wastewater dispersal using subsurface drip emitters

    E-Print Network [OSTI]

    Persyn, Russell Alan

    2000-01-01T23:59:59.000Z

    An on-site wastewater treatment project site with two separate drip fields produced data on emitter flow rates and uniformity after 6 years of operation. The site served a two-bedroom residence in Weslaco, Texas, with treatment through a septic...

  2. Alternative Fuels Data Center

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    Manual on Uniform Traffic Control Devices, and the station must be indicated by green pavement markings. A PEV charging station is defined as a public or private parking...

  3. Panos D. Prevedouros, PhD, Asc. Professor of Transportation Engineering, Department of Civil and Environmental Engineering, UH-Manoa pdp@hawaii.edu January 2004 This is a comprehensive but not an exhaustive list of suggestions for easing traffic congest

    E-Print Network [OSTI]

    Prevedouros, Panos D.

    , these funds can be used to improve the City's extensive traffic signal system, the Traffic Control Center the Liliha St. on ramp and the Pali Hwy. off-ramp. o Control the inflow of the Vineyard Blvd. and Ward Ave for buses and HOV!HOT). o If the above viaduct can't be done, then re-design the Sand Island Access Road

  4. 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 ...

  5. 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

  6. 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...

  7. 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.

  8. 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...

  9. 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.

  10. 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

  11. 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

  12. 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

  13. 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

  14. 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

  15. 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

  16. 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

  17. 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

  18. 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

  19. 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

  20. 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

  1. Evaluation of a Stastical Technique to Mitigate Malicious Control Packets in Ad Hoc Networks

    E-Print Network [OSTI]

    Boppana, Rajendra V.

    traffic over TCP, we show that the rate control mechanism is very effective in detecting and mitigating. Intrusion detection systems [22] address DoS as part of a variety of other security attacks can be launched by malicious nodes without generating unusually high traffic. This makes the detection

  2. 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

  3. 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

  4. 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

  5. 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

  6. 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

  7. 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;

  8. 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

  9. 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

  10. 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...

  11. 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

  12. 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

  13. 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

  14. 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

  15. 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

  16. 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

  17. 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...

  18. 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

  19. Effect of non-uniform exchange field in ferromagnetic graphene

    E-Print Network [OSTI]

    Debashree Chowdhury; B. Basu

    2015-02-16T23:59:59.000Z

    We have presented here the consequences of the non-uniform exchange field on the spin transport issues in spin chiral configuration of ferromagnetic graphene. Taking resort to the spin orbit coupling (SOC) term and non-uniform exchange coupling term we are successful to express the expression of Hall conductivity in terms of the exchange field and SOC parameters through the Kubo formula approach. However, for a specific configuration of the exchange parameter we have evaluated the Berry curvature of the system. We also have paid attention to the study of SU(2) gauge theory of ferromagnetic graphene. The generation of anti damping spin orbit torque in spin chiral magnetic graphene is also briefly discussed.

  20. A RICH with aerogel: a study of refractive index uniformity

    E-Print Network [OSTI]

    Alemi, M; Calvi, M; Matteuzzi, C; Musy, M; Perego, D L; Easo, S

    2004-01-01T23:59:59.000Z

    The use of aerogel as a radiator in the RICH detectors of LHCb is a challenge due to the hot environment of the hadron collider LHC. Large size tiles of silica aerogel were recently produced with unprecedented optical quality for such dimensions. Results of laboratory measurements and beam tests are briefly reported. A description of a method to measure the uniformity of the index of refraction within the tile is given.

  1. One-way Ponderomotive Barrier in a Uniform Magnetic Field

    SciTech Connect (OSTI)

    I.Y. Dodin; N.J. Fisch

    2005-02-14T23:59:59.000Z

    The possibility of an asymmetric ponderomotive barrier in a nonuniform dc magnetic field by high-frequency radiation near the cyclotron resonance for selected plasma species was contemplated in Physics of Plasmas 11 (November 2004) 5046-5064. Here we show that a similar one-way barrier, which reflects particles incident from one side while transmitting those incident from the opposite side, can be produced also in a uniform magnetic field, entirely due to inhomogeneity of high-frequency drive.

  2. Gravitational lensing in a non-uniform plasma

    E-Print Network [OSTI]

    G. S. Bisnovatyi-Kogan; O. Yu. Tsupko

    2010-06-11T23:59:59.000Z

    We develop a model of gravitational lensing in a non-uniform plasma. When a gravitating body is surrounded by a plasma, the lensing angle depends on the frequency of the electromagnetic wave, due to dispersion properties of plasma, in presence of a plasma inhomogeneity, and of a gravity. The second effect leads, even in a uniform plasma, to a difference of the gravitational photon deflection angle from the vacuum case, and to its dependence on the photon frequency. We take into account both effects, and derive the expression for the lensing angle in the case of a strongly nonuniform plasma in presence of the gravitation. Dependence of the lensing angle on the photon frequency in a homogeneous plasma resembles the properties of a refractive prism spectrometer, which strongest action is for very long radiowaves. We discuss the observational appearances of this effect for the gravitational lens with a Schwarzschild metric, surrounded by a uniform plasma. We obtain formulae for the lensing angle and the magnification factors in this case and discuss a possibility of observation of this effect by the planned VLBI space project Radioastron. We also consider models with a nonuniform plasma distribution. For different gravitational lens models we compare the corrections to the vacuum lensing due to the gravitational effect in plasma, and due to the plasma inhomogeneity. We have shown that the gravitational effect could be detected in the case of a hot gas in the gravitational field of a galaxy cluster.

  3. Coulomb energy of uniformly-charged spheroidal shell systems

    E-Print Network [OSTI]

    Vikram Jadhao; Zhenwei Yao; Creighton K. Thomas; Monica Olvera de la Cruz

    2015-01-15T23:59:59.000Z

    We provide exact expressions for the electrostatic energy of uniformly-charged prolate and oblate spheroidal shells. We find that uniformly-charged prolate spheroids of eccentricity greater than 0.9 have lower Coulomb energy than a sphere of the same area. For the volume-constrained case, we find that a sphere has the highest Coulomb energy among all spheroidal shells. Further, we derive the change in the Coulomb energy of a uniformly-charged shell due to small, area-conserving perturbations on the spherical shape. Our perturbation calculations show that buckling-type deformations on a sphere can lower the Coulomb energy. Finally, we consider the possibility of counterion condensation on the spheroidal shell surface. We employ a Manning-Oosawa two-state model approximation to evaluate the renormalized charge and analyze the behavior of the equilibrium free energy as a function of the shell's aspect ratio for both area-constrained and volume-constrained cases. Counterion condensation is seen to favor the formation of spheroidal structures over a sphere of equal area for high values of shell volume fractions.

  4. 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

  5. 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

  6. 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

  7. Effect of a uniform electric field on soot in laminar premixed ethylene/air flames

    SciTech Connect (OSTI)

    Wang, Y.; Yao, Q. [Key Laboratory of Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, 100084 Beijing (China); Nathan, G.J. [School of Mechanical Engineering, Centre for Energy Technology, The University of Adelaide, S.A. 5005 (Australia); Alwahabi, Z.T.; King, K.D.; Ho, K. [School of Chemical Engineering, Centre for Energy Technology, The University of Adelaide, S.A. 5005 (Australia)

    2010-07-15T23:59:59.000Z

    The effect of a nominally uniform electric field on the initially uniform distribution of soot has been assessed for laminar premixed ethylene/air flames from a McKenna burner. An electrophoretic influence on charged soot particles was measured through changes to the deposition rate of soot on the McKenna plug, using laser extinction (LE). Soot volume fraction was measured in situ using laser-induced incandescence (LII). Particle size and morphologies were assessed through ex situ transmission electron microscopy (TEM) using thermophoretic sampling particle diagnostics (TSPD). The results show that the majority of these soot particles are positively charged. The presence of a negatively charged plug was found to decrease the particle residence times in the flame and to influence the formation and oxidation progress. A positively charged plug has the opposite effect. The effect on soot volume fraction, particles size and morphology with electric field strength is also reported. Flame stability was also found to be affected by the presence of the electric field, with the balance of the electrophoretic force and drag force controlling the transition to unstable flame flicker. The presence of charged species generated by the flame was found to reduce the dielectric field strength to one seventh that of air. (author)

  8. A two-phase spherical electric machine for generating rotating uniform magnetic fields

    E-Print Network [OSTI]

    Lawler, Clinton T. (Clinton Thomas)

    2007-01-01T23:59:59.000Z

    This thesis describes the design and construction of a novel two-phase spherical electric machine that generates rotating uniform magnetic fields, known as a fluxball machine. Alternative methods for producing uniform ...

  9. Coded aperture imaging with self-supporting uniformly redundant arrays

    DOE Patents [OSTI]

    Fenimore, Edward E. (Los Alamos, NM)

    1983-01-01T23:59:59.000Z

    A self-supporting uniformly redundant array pattern for coded aperture imaging. The present invention utilizes holes which are an integer times smaller in each direction than holes in conventional URA patterns. A balance correlation function is generated where holes are represented by 1's, nonholes are represented by -1's, and supporting area is represented by 0's. The self-supporting array can be used for low energy applications where substrates would greatly reduce throughput. The balance correlation response function for the self-supporting array pattern provides an accurate representation of the source of nonfocusable radiation.

  10. Generate Uniform Transverse Distributed Electron Beam along a Beam Line

    E-Print Network [OSTI]

    Jiao, Y

    2015-01-01T23:59:59.000Z

    It has been reported that transverse distribution shaping can help to further enhance the energy extraction efficiency in a terawatt, tapered X-ray free-electron laser. Thus, methods of creating and keeping almost uniform transverse distributed (UTD) beam within undulators are required. This study shows that a UTD electron beam can be generated within evenly distributed drift sections where undulators can be placed, by means of octupoles and particular optics. A concrete design is presented, and numerical simulations are done to verify the proposed method.

  11. Pairs Emission in a Uniform Background Field: an Algebraic Approach

    E-Print Network [OSTI]

    Roberto Soldati

    2011-06-23T23:59:59.000Z

    A fully algebraic general approach is developed to treat the pairs emission and absorption in the presence of some uniform external background field. In particular, it is shown that the pairs production and annihilation operators, together with the pairs number operator, do actually fulfill the SU(2) functional Lie algebra. As an example of application, the celebrated Schwinger formula is consistently and nicely recovered, within this novel approach, for a Dirac spinor field in the presence of a constant and homogeneous electric field in four spacetime dimensions.

  12. Effect on Non-Uniform Heat Generation on Thermionic Reactions

    SciTech Connect (OSTI)

    Schock, Alfred

    2012-01-19T23:59:59.000Z

    The penalty resulting from non-uniform heat generation in a thermionic reactor is examined. Operation at sub-optimum cesium pressure is shown to reduce this penalty, but at the risk of a condition analogous to burnout. For high pressure diodes, a simple empirical correlation between current, voltage and heat flux is developed and used to analyze the performance penalty associated with two different heat flux profiles, for series-and parallel-connected converters. The results demonstrate that series-connected converters require much finer power flattening than parallel converters. For example, a ±10% variation in heat generation across a series array can result in a 25 to 50% power penalty.

  13. About the Uniform Methods Project | 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 1,006 492 742 33Frequently20,000 Russian NuclearandJune 17, 2015EnergyThe Office ofAdministrationAboutUniform

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

    E-Print Network [OSTI]

    Pitsillides, Andreas

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

  15. The Importance, Design and Implementation of a Middleware for Networked Control Systems

    E-Print Network [OSTI]

    that of classical control systems. An example of such a system, an automatic traffic control system, establishedThe Importance, Design and Implementation of a Middleware for Networked Control Systems Kyoung, networked control systems may soon become prevalent in many control applica- tions. While the capability

  16. Power Control for an Asynchronous Multirate Decorrelator \\Lambda

    E-Print Network [OSTI]

    Yates, Roy

    Power Control for an Asynchronous Multi­rate Decorrelator \\Lambda Mohammad Saquib ECE Dept) requirements of multimedia traffic require the use of power control for CDMA wireless systems employing on individual requirements. In this context, we propose a power control algorithm for a multi­rate decorrelator

  17. OPTIMAL CONTROL OF SYSTEMS OF CONSERVATION LAWS AND APPLICATION

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    OPTIMAL CONTROL OF SYSTEMS OF CONSERVATION LAWS AND APPLICATION TO NON-EQUILIBRIUM TRAFFIC STEERING iteratively optimal control problems involving systems of conservation laws. The irregularity of discontinuous waves in computing an optimal (or suboptimal) control for systems of conservation laws

  18. 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.

  19. 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.

  20. 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.

  1. 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

  2. Strong and uniform equivalence of nonmonotonic theories --an algebraic Miroslaw Truszczynski

    E-Print Network [OSTI]

    Truszczynski, Miroslaw

    Strong and uniform equivalence of nonmonotonic theories -- an algebraic approach Miroslaw Truszczy We show that the concepts of strong and uniform equivalence of logic programs can be generalized and uniform equivalence for sev- eral nonmonotonic logics including logic programming with aggregates, default

  3. Strong and uniform equivalence of nonmonotonic theories ---an algebraic Mirosl/aw Truszczy

    E-Print Network [OSTI]

    Truszczynski, Miroslaw

    Strong and uniform equivalence of nonmonotonic theories --- an algebraic approach # Mirosl mirekcs.uky.edu Abstract We show that the concepts of strong and uniform equivalence of logic programs can characterizations of strong and uniform equivalence for sev­ eral nonmonotonic logics including logic programming

  4. Highly uniform, multi-stacked InGaAs/GaAs quantum dots embedded in a GaAs nanowire

    SciTech Connect (OSTI)

    Tatebayashi, J., E-mail: tatebaya@iis.u-tokyo.ac.jp; Ota, Y. [NanoQUINE, The University of Tokyo, 4-6-1, Komaba, Meguro-ku, Tokyo 153-8505 (Japan); Ishida, S.; Nishioka, M.; Iwamoto, S.; Arakawa, Y. [NanoQUINE, The University of Tokyo, 4-6-1, Komaba, Meguro-ku, Tokyo 153-8505 (Japan); Institute of Industrial Science, The University of Tokyo, 4-6-1, Komaba, Meguro-ku, Tokyo 153-8505 (Japan)

    2014-09-08T23:59:59.000Z

    We demonstrate a highly uniform, dense stack of In{sub 0.22}Ga{sub 0.78}As/GaAs quantum dot (QD) structures in a single GaAs nanowire (NW). The size (and hence emission energy) of individual QD is tuned by careful control of the growth conditions based on a diffusion model of morphological evolution of NWs and optical characterization. By carefully tailoring the emission energies of individual QD, dot-to-dot inhomogeneous broadening of QD stacks in a single NW can be as narrow as 9.3?meV. This method provides huge advantages over traditional QD stack using a strain-induced Stranski-Krastanow growth scheme. We show that it is possible to fabricate up to 200 uniform QDs in single GaAs NWs using this growth technique without degradation of the photoluminescence intensity.

  5. 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.

  6. 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.

  7. Uniform bulk material processing using multimode microwave radiation

    DOE Patents [OSTI]

    Varma, Ravi (Los Alamos, NM); Vaughn, Worth E. (Madison, WI)

    2000-01-01T23:59:59.000Z

    An apparatus for generating uniform heating in material contained in a cylindrical vessel is described. TE.sub.10 -mode microwave radiation is coupled into a cylindrical microwave transition such that microwave radiation having TE.sub.11 -, TE.sub.01 - and TM.sub.01 -cylindrical modes is excited therein. By adjusting the intensities of these modes, substantially uniform heating of materials contained in a cylindrical drum which is coupled to the microwave transition through a rotatable choke can be achieved. The use of a poor microwave absorbing insulating cylindrical insert, such as aluminum oxide, for separating the material in the container from the container walls and for providing a volume through which air is circulated is expected to maintain the container walls at room temperature. The use of layer of highly microwave absorbing material, such as SiC, inside of the insulating insert and facing the material to be heated is calculated to improve the heating pattern of the present apparatus.

  8. Uniform Methods Project: Methods for Determining Energy Efficiency Savings for Specific Measures; January 2012 - March 2013

    SciTech Connect (OSTI)

    Jayaweera, T.; Haeri, H.

    2013-04-01T23:59:59.000Z

    Under the Uniform Methods Project, DOE is developing a framework and a set of protocols for determining the energy savings from specific energy efficiency measures and programs. The protocols provide a straightforward method for evaluating gross energy savings for common residential and commercial measures offered in ratepayer-funded initiatives in the United States. They represent a refinement of the body of knowledge supporting energy efficiency evaluation, measurement, and verification (EM&V) activities. This document deals with savings from the following measures: commercial and industrial lighting, commercial and industrial lighting controls, small commercial and residential unitary and split system HVAC cooling equipment, residential furnaces and boilers, residential lighting, refrigerator recycling, whole-building retrofit using billing analysis, metering, peak demand and time-differentiated energy savings, sample design, survey design and implementation, and assessing persistence and other evaluation issues.

  9. Use of Uniformly Distributed Concentrated Sunlight for Highly Accelerated Testing of Coatings

    SciTech Connect (OSTI)

    Jorgensen, G.; Bingham, C.; King, D.; Lewandowski, A.; Netter, J.; Terwilliger, K.; Adamsons, K.

    2000-12-14T23:59:59.000Z

    NREL has developed a new ultraviolet (UV) light concentrator that allows material samples to be subjected to uniform intensity levels of 50-100X solar UV at closely controlled sample exposure temperatures. In collaboration with industry, representative coating systems have been exposed without introducing unrealistic degradation mechanisms. Furthermore, correlations have been derived between these highly accelerated test conditions and results obtained at 1-2 suns. Such information is used to predict the degradation of materials in real-world applications. These predictions are compared with measured in-service performance losses to validate the approach. This allows valuable information to be obtained in greatly reduced timeframes, which can provide tremendous competitive advantage in the commercial marketplace.

  10. Metrics, fundamental trade-offs and control policies for delay-sensitive applications in volatile environments

    E-Print Network [OSTI]

    ParandehGheibi, Ali

    2012-01-01T23:59:59.000Z

    With the explosion of consumer demand, media streaming will soon be the dominant type of Internet traffic. Since such applications are intrinsically delay-sensitive, the conventional network control policies and coding ...

  11. 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...

  12. High flow rate nozzle system with production of uniform size droplets

    DOE Patents [OSTI]

    Stockel, I.H.

    1990-10-16T23:59:59.000Z

    Method steps for production of substantially uniform size droplets from a flow of liquid include forming the flow of liquid, periodically modulating the momentum of the flow of liquid in the flow direction at controlled frequency, generating a cross flow direction component of momentum and modulation of the cross flow momentum of liquid at substantially the same frequency and phase as the modulation of flow direction momentum, and spraying the so formed modulated flow through a first nozzle outlet to form a desired spray configuration. A second modulated flow through a second nozzle outlet is formed according to the same steps, and the first and second modulated flows impinge upon each other generating a liquid sheet. Nozzle apparatus for modulating each flow includes rotating valving plates interposed in the annular flow of liquid. The plates are formed with radial slots. Rotation of the rotating plates is separably controlled at differential angular velocities for a selected modulating frequency to achieve the target droplet size and production rate for a given flow. The counter rotating plates are spaced to achieve a desired amplitude of modulation in the flow direction, and the angular velocity of the downstream rotating plate is controlled to achieve the desired amplitude of modulation of momentum in the cross flow direction. Amplitude of modulation is set according to liquid viscosity. 5 figs.

  13. High flow rate nozzle system with production of uniform size droplets

    DOE Patents [OSTI]

    Stockel, Ivar H. (Bangor, ME)

    1990-01-01T23:59:59.000Z

    Method steps for production of substantially uniform size droplets from a flow of liquid include forming the flow of liquid, periodically modulating the momentum of the flow of liquid in the flow direction at controlled frequency, generating a cross flow direction component of momentum and modulation of the cross flow momentum of liquid at substantially the same frequency and phase as the modulation of flow direction momentum, and spraying the so formed modulated flow through a first nozzle outlet to form a desired spray configuration. A second modulated flow through a second nozzle outlet is formed according to the same steps, and the first and second modulated flows impinge upon each other generating a liquid sheet. Nozzle apparatus for modulating each flow includes rotating valving plates interposed in the annular flow of liquid. The plates are formed with radial slots. Rotation of the rotating plates is separably controlled at differential angular velocities for a selected modulating frequency to achieve the target droplet size and production rate for a given flow. The counter rotating plates are spaced to achieve a desired amplitude of modulation in the flow direction, and the angular velocity of the downstream rotating plate is controlled to achieve the desired amplitude of modulation of momentum in the cross flow direction. Amplitude of modulation is set according to liquid viscosity.

  14. Method for forming a uniformly dense polymer foam body

    DOE Patents [OSTI]

    Whinnery, Jr., Leroy (Danville, CA)

    2002-01-01T23:59:59.000Z

    A method for providing a uniformly dense polymer foam body having a density between about 0.013 .sup.g /.sub.cm.sup..sub.3 to about 0.5 .sup.g /.sub.cm.sup..sub.3 is disclosed. The method utilizes a thermally expandable polymer microballoon material wherein some of the microballoons are unexpanded and some are only partially expanded. It is shown that by mixing the two types of materials in appropriate ratios to achieve the desired bulk final density, filling a mold with this mixture so as to displace all or essentially all of the internal volume of the mold, heating the mold for a predetermined interval at a temperature above about 130.degree. C., and then cooling the mold to a temperature below 80.degree. C. the molded part achieves a bulk density which varies by less then about .+-.6% everywhere throughout the part volume.

  15. Uniformly wound superconducting coil and method of making same

    DOE Patents [OSTI]

    Mookerjee, S.; Weijun, S.; Yager, B.

    1994-03-08T23:59:59.000Z

    A coil of superconducting wire for a superconducting magnet is described having a relatively dense and uniformly spaced winding to enhance the homogeneity and strength of the magnetic field surrounding the coil and a method of winding the same wherein the mandrel used to wind said coil comprises removable spacers and retainers forming a plurality of outwardly opening slots, each of said slots extending generally about the periphery of the mandrel and being sized to receive and outwardly align and retain successive turns of the superconducting wire within each slot as the wire is wound around and laterally across the mandrel to form a plurality of wire ribbons of a predetermined thickness laterally across the mandrel. 8 figures.

  16. Uniformly wound superconducting coil and method of making same

    DOE Patents [OSTI]

    Mookerjee, Sumit (Cedar Hill, TX); Weijun, Shen (Beijun, CN); Yager, Billy (Waxahachie, TX)

    1994-01-01T23:59:59.000Z

    A coil of superconducting wire for a superconducting magnet having a relaely dense and uniformly spaced winding to enhance the homogeneity and strength of the magnetic field surrounding the coil and a method of winding the same wherein the mandrel used to wind said coil comprises removable spacers and retainers forming a plurality of outwardly opening slots, each of said slots extending generally about the periphery of the mandrel and being sized to receive and outwardly align and retain successive turns of the superconducting wire within each slot as the wire is wound around and laterally across the mandrel to form a plurality of wire ribbons of a predetermined thickness laterally across the mandrel.

  17. A Uniform Framework of Global Nuclear Materials Management

    SciTech Connect (OSTI)

    Dupree, S.A.; Mangan, D.L.; Sanders, T.L; Sellers, T.A.

    1999-04-20T23:59:59.000Z

    Global Nuclear Materials Management (GNMM) anticipates and supports a growing international recognition of the importance of uniform, effective management of civilian, excess defense, and nuclear weapons materials. We expect thereto be a continuing increase in both the number of international agreements and conventions on safety, security, and transparency of nuclear materials, and the number of U.S.-Russian agreements for the safety, protection, and transparency of weapons and excess defense materials. This inventory of agreements and conventions may soon expand into broad, mandatory, international programs that will include provisions for inspection, verification, and transparency, To meet such demand the community must build on the resources we have, including State agencies, the IAEA and regional organizations. By these measures we will meet the future expectations for monitoring and inspection of materials, maintenance of safety and security, and implementation of transparency measures.

  18. Optimization of control parameters for isolated and coordinated actuated signal systems

    E-Print Network [OSTI]

    Koothrappally, Joseph

    1993-01-01T23:59:59.000Z

    and additions to existing traffic control techniques. A new simulation model, called TEXSIM, which takes full advantage of the latest programming standards and techniques, was developed during this effort. The new model is used to identify patterns.... It is obvious that if the advantages of actuation and coordination could be combined, then such systems would be both efficient and responsive. However, complications introduced by the probabilistic response of actuated controllers to variations in traffic...

  19. 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.

  20. 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...

  1. The effects of user mobility on usage parameter control (UPC) in wireless ATM systems

    SciTech Connect (OSTI)

    Sholander, P.; Martinez, L.; Tolendino, L. [Sandia National Labs., Albuquerque, NM (United States); Mah, B.A. [Sandia National Labs., Livermore, CA (United States)

    1997-07-01T23:59:59.000Z

    Wireless Asynchronous Transfer Mode (WATM) networks pose new traffic management problems. One example is the effect of user mobility on Usage Parameter Control (UPC). If the UPC algorithm resets after each handoff between wireless-cells, then users can cheat on their traffic contract. This paper derives explicit relationships between a user`s traffic parameters (Peak Cell Rate, Sustained Cell Rate and Maximum Burst Size), their transit time per wireless-cell, their maximum sustained cheating-rate and the Generic Cell Rate Algorithm`s (GCRA`s) Limit (L) parameter. It also shows that the GCRA can still effectively police Constant Bit Rate (CBR) traffic, but not some types of realistic Variable Bit Rate (VBR) traffic.

  2. Deemed Export Control Revised 12/2010

    E-Print Network [OSTI]

    Chen, Wei

    Deemed Export Control Revised 12/2010 Northwestern University - The International Office 630.northwestern.edu/international - intscholars@northwestern.edu The Export Administration Regulations (EAR) and the International Traffic in Arms States-even by an employer-is deemed to be an export to the person's country or countries of nationality

  3. Cooled, temperature controlled electrometer

    DOE Patents [OSTI]

    Morgan, John P. (Idaho Falls, ID)

    1992-01-01T23:59:59.000Z

    A cooled, temperature controlled electrometer for the measurement of small currents. The device employs a thermal transfer system to remove heat from the electrometer circuit and its environment and dissipate it to the external environment by means of a heat sink. The operation of the thermal transfer system is governed by a temperature regulation circuit which activates the thermal transfer system when the temperature of the electrometer circuit and its environment exceeds a level previously inputted to the external variable temperature control circuit. The variable temperature control circuit functions as subpart of the temperature control circuit. To provide temperature stability and uniformity, the electrometer circuit is enclosed by an insulated housing.

  4. Cooled, temperature controlled electrometer

    DOE Patents [OSTI]

    Morgan, John P.

    1992-08-04T23:59:59.000Z

    A cooled, temperature controlled electrometer for the measurement of small currents. The device employs a thermal transfer system to remove heat from the electrometer circuit and its environment and dissipate it to the external environment by means of a heat sink. The operation of the thermal transfer system is governed by a temperature regulation circuit which activates the thermal transfer system when the temperature of the electrometer circuit and its environment exceeds a level previously inputted to the external variable temperature control circuit. The variable temperature control circuit functions as subpart of the temperature control circuit. To provide temperature stability and uniformity, the electrometer circuit is enclosed by an insulated housing.

  5. 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...

  6. 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

  7. 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

  8. ECR apparatus with magnetic coil for plasma refractive index control

    DOE Patents [OSTI]

    Berry, L.A.

    1994-04-26T23:59:59.000Z

    The present invention describes a technique to control the radial profile of microwave power in an ECR plasma discharge. In order to provide for a uniform plasma density to a specimen, uniform energy absorption by the plasma is desired. By controlling the radial profile of the microwave power transmitted through the microwave window of a reactor, the profile of the transmitted energy to the plasma can be controlled in order to have uniform energy absorption by the plasma. An advantage of controlling the profile using the window transmission characteristics is that variations to the radial profile of microwave power can be made without changing the microwave coupler or reactor design. 9 figures.

  9. ECR apparatus with magnetic coil for plasma refractive index control

    DOE Patents [OSTI]

    Berry, Lee A. (Oak Ridge, TN)

    1994-01-01T23:59:59.000Z

    The present invention describes a technique to control the radial profile of microwave power in an ECR plasma discharge. In order to provide for a uniform plasma density to a specimen, uniform energy absorption by the plasma is desired. By controlling the radial profile of the microwave power transmitted through the microwave window of a reactor, the profile of the transmitted energy to the plasma can be controlled in order to have uniform energy absorption by the plasma. An advantage of controlling the profile using the window transmission characteristics is that variations to the radial profile of microwave power can be made without changing the microwave coupler or reactor design.

  10. 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

  11. 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 ...

  12. 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...

  13. 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

  14. 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

  15. 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

  16. 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

  17. 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

  18. 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

  19. 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

  20. 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

  1. 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...

  2. 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

  3. 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

  4. 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

  5. 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

  6. 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

  7. 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

  8. 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

  9. 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

  10. 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...

  11. 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 ...

  12. 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

  13. 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

  14. Sealable stagnation flow geometries for the uniform deposition of materials and heat

    DOE Patents [OSTI]

    McCarty, Kevin F. (Livermore, CA); Kee, Robert J. (Livermore, CA); Lutz, Andrew E. (Alamo, CA); Meeks, Ellen (Livermore, CA)

    2001-01-01T23:59:59.000Z

    The present invention employs a constrained stagnation flow geometry apparatus to achieve the uniform deposition of materials or heat. The present invention maximizes uniform fluxes of reactant gases to flat surfaces while minimizing the use of reagents and finite dimension edge effects. This results, among other things, in large area continuous films that are uniform in thickness, composition and structure which is important in chemical vapor deposition processes such as would be used for the fabrication of semiconductors.

  15. Gamma-ray burst jets: uniform or structured?

    E-Print Network [OSTI]

    Salafia, O S; Nappo, F; Ghisellini, G; Ghirlanda, G; Salvaterra, R; Tagliaferri, G

    2015-01-01T23:59:59.000Z

    The structure of Gamma-Ray Burst (GRB) jets impacts on their prompt and afterglow emission properties. Insights into the still unknown structure of GRBs can be achieved by studying how different structures impact on the luminosity function (LF): i) we show that low ($10^{46} 10^{50}$ erg/s) luminosity GRBs can be described by a unique LF; ii) we find that a uniform jet (seen on- and off-axis) as well as a very steep structured jet (i.e. $\\epsilon(\\theta) \\propto \\theta^{-s}$ with $s > 4$) can reproduce the current LF data; iii) taking into account the emission from the whole jet (i.e. including contributions from mildly relativistic, off-axis jet elements) we find that $E_{\\rm iso}(\\theta_{\\rm v})$ (we dub this quantity "apparent structure") can be very different from the intrinsic structure $\\epsilon(\\theta)$: in particular, a jet with a Gaussian intrinsic structure has an apparent structure which is more similar to a power law. This opens a new viewpoint on the quasi-universal structured jet hypothesis.

  16. Second-order analysis of optimal control problems with control and ...

    E-Print Network [OSTI]

    2008-10-30T23:59:59.000Z

    quadratic growth condition, for optimal control problems of ordinary differential equations ... Systems Research Institute, Polish Academy of Sciences, ul. Newelska 6 ... but instead a qualification condition that implies the uniform positive linear.

  17. An analysis of the size-control and uniformity of polymeric nanoparticle preparation techniques

    E-Print Network [OSTI]

    Pyle, Benjamin Ryan

    2013-01-01T23:59:59.000Z

    Nanoparticles are bridge the gap between the micro and atomic scale and have found a variety of different used, especially in the drug-delivery field. This paper will break down some of the mot common methods for polymeric ...

  18. 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

  19. 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...

  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. Commissioning of output factors for uniform scanning proton beams

    SciTech Connect (OSTI)

    Zheng Yuanshui; Ramirez, Eric; Mascia, Anthony; Ding Xiaoning; Okoth, Benny; Zeidan, Omar; Hsi Wen; Harris, Ben; Schreuder, Andries N.; Keole, Sameer [ProCure Proton Therapy Center, 5901 West Memorial Road, Oklahoma City, Oklahoma 73142 (United States); ProCure Treatment Centers, 420 North Walnut Street, Bloomington, Indiana 47404 (United States); ProCure Proton Therapy Center, 5901 West Memorial Road, Oklahoma City, Oklahoma 73142 (United States)

    2011-04-15T23:59:59.000Z

    Purpose: Current commercial treatment planning systems are not able to accurately predict output factors and calculate monitor units for proton fields. Patient-specific field output factors are thus determined by either measurements or empirical modeling based on commissioning data. The objective of this study is to commission output factors for uniform scanning beams utilized at the ProCure proton therapy centers. Methods: Using water phantoms and a plane parallel ionization chamber, the authors first measured output factors with a fixed 10 cm diameter aperture as a function of proton range and modulation width for clinically available proton beams with ranges between 4 and 31.5 cm and modulation widths between 2 and 15 cm. The authors then measured the output factor as a function of collimated field size at various calibration depths for proton beams of various ranges and modulation widths. The authors further examined the dependence of the output factor on the scanning area (i.e., uncollimated proton field), snout position, and phantom material. An empirical model was developed to calculate the output factor for patient-specific fields and the model-predicted output factors were compared to measurements. Results: The output factor increased with proton range and field size, and decreased with modulation width. The scanning area and snout position have a small but non-negligible effect on the output factors. The predicted output factors based on the empirical modeling agreed within 2% of measurements for all prostate treatment fields and within 3% for 98.5% of all treatment fields. Conclusions: Comprehensive measurements at a large subset of available beam conditions are needed to commission output factors for proton therapy beams. The empirical modeling agrees well with the measured output factor data. This investigation indicates that it is possible to accurately predict output factors and thus eliminate or reduce time-consuming patient-specific output measurements for proton treatments.

  2. Online Blind Calibration of Non-Uniform Photodetectors: Application to Endomicroscopy

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Online Blind Calibration of Non-Uniform Photodetectors: Application to Endomicroscopy Nicolas an original method for the online blind calibra- tion of non-uniform photodetectors. The disparity of a system akin to gradient- based surface recovery. From our blind calibration procedure, we design

  3. Classification of instability modes in a model of aluminium reduction cells with a uniform magnetic field

    E-Print Network [OSTI]

    (sodium aluminium fluoride) by an electric current of 350-500kA, which passes vertically down fromClassification of instability modes in a model of aluminium reduction cells with a uniform magnetic reduction cells in the presence of a uniform, vertical, background magnetic field is presented

  4. DISSERTATION EFFECTS OF CONTACT-BASED NON-UNIFORMITIES IN CDS/CDTE

    E-Print Network [OSTI]

    Sites, James R.

    DISSERTATION EFFECTS OF CONTACT-BASED NON-UNIFORMITIES IN CDS/CDTE THIN-FILM SOLAR CELLS Submitted University April 25, 2008 We hereby recommend that the dissertation prepared under our supervision by Alan R Department Head ii #12;ABSTRACT OF DISSERTATION Effects of contact-based non-uniformities in CdS/CdTe thin

  5. Using workspace information as a guide to non-uniform sampling in probabilistic

    E-Print Network [OSTI]

    Utrecht, Universiteit

    Using workspace information as a guide to non-uniform sampling in probabilistic roadmap planners-uniform sampling in probabilistic roadmap planners Jur P. van den Berg Mark H. Overmars November 2003 Abstract The probabilistic roadmap (PRM) planner is a popular method for robot motion planning problems with many degrees

  6. DISSERTATION ANALYSIS OF IMPACT OF NON-UNIFORMITIES ON THIN-FILM SOLAR CELLS

    E-Print Network [OSTI]

    Sites, James R.

    DISSERTATION ANALYSIS OF IMPACT OF NON-UNIFORMITIES ON THIN-FILM SOLAR CELLS AND MODULES WITH 2-D-FILM SOLAR CELLS AND MODULES WITH 2-D SIMULATIONS BE ACCEPTED AS FULFILLING IN PART REQUIREMENTS-UNIFORMITIES ON THIN-FILM SOLAR CELLS AND MODULES WITH 2-D SIMULATIONS Clean and environmentally friendly photovoltaic

  7. Dynamics of uniform Si/SiGe uniaxial strain generation on compliant insulating substrates

    E-Print Network [OSTI]

    Dynamics of uniform Si/SiGe uniaxial strain generation on compliant insulating substrates R. L on the relaxation of Si/SiGe bilayers of different geometries to obtain up to 1.0% uniaxial tensile strain in silicon and 1.5 GPa uniaxial compressive stress in SiGe [1,2]. The process generates uniform uniaxially

  8. Uniform Stability of Switched Linear Systems: Extensions of LaSalle's Invariance Principle

    E-Print Network [OSTI]

    Liebling, Michael

    1 Uniform Stability of Switched Linear Systems: Extensions of LaSalle's Invariance Principle Jo linear systems, where uniformity refers to the con- vergence rate of the multiple solutions that one be viewed as extensions of LaSalle's Invariance Principle to certain classes of switched linear systems

  9. X-ray radiographic technique for measuring density uniformity of silica aerogel

    E-Print Network [OSTI]

    Makoto Tabata; Yoshikiyo Hatakeyama; Ichiro Adachi; Takeshi Morita; Keiko Nishikawa

    2012-12-14T23:59:59.000Z

    This paper proposes a new X-ray radiographic technique for measuring density uniformity of silica aerogels used as radiator in proximity-focusing ring-imaging Cherenkov detectors. To obtain high performance in a large-area detector, a key characteristic of radiator is the density (i.e. refractive index) uniformity of an individual aerogel monolith. At a refractive index of n = 1.05, our requirement for the refractive index uniformity in the transverse plane direction of an aerogel tile is |\\delta (n - 1)/(n - 1)| aerogels from a trial production and that of Panasonic products (SP-50) as a reference, and to confirm they have sufficient density uniformity within \\pm 1% along the transverse plane direction. The measurement results show that the proposed technique can quantitatively estimate the density uniformity of aerogels.

  10. X-ray radiographic technique for measuring density uniformity of silica aerogel

    E-Print Network [OSTI]

    Tabata, Makoto; Adachi, Ichiro; Morita, Takeshi; Nishikawa, Keiko; 10.1016/j.nima.2012.09.001

    2012-01-01T23:59:59.000Z

    This paper proposes a new X-ray radiographic technique for measuring density uniformity of silica aerogels used as radiator in proximity-focusing ring-imaging Cherenkov detectors. To obtain high performance in a large-area detector, a key characteristic of radiator is the density (i.e. refractive index) uniformity of an individual aerogel monolith. At a refractive index of n = 1.05, our requirement for the refractive index uniformity in the transverse plane direction of an aerogel tile is |\\delta (n - 1)/(n - 1)| aerogels from a trial production and that of Panasonic products (SP-50) as a reference, and to confirm they have sufficient density uniformity within \\pm 1% along the transverse plane direction. The measurement results show that the proposed technique can quantitatively estimate the density uniformity of aerogels.

  11. 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...

  12. An evaluation of supplemental signing at two-way stop-controlled intersections

    E-Print Network [OSTI]

    Schuckel, Clint Edwin

    1996-01-01T23:59:59.000Z

    I INTRODUC11ON Problem Statement Research Objectives Organization of Thesis 2 3 4 II LITERATURE REVIEW Operational Characteristics Motivation for Initial Research Driver Behavior Studies . Driver Expectancy at Intersections Converted... Page I Supplemental Signs for the Removal of All-Way Stop-Control . 2 Accident Frequency as a Function of Daily Traffic Volume. . . . 10 13 3 Traffic Conflicts Observed at TWSC Intersections 32 4 Portable Telescoping Camera Unit 39 5 Location...

  13. Perfect Computational Equivalence between Quantum Turing Machines and Finitely Generated Uniform Quantum Circuit Families

    E-Print Network [OSTI]

    Harumichi Nishimura; Masanao Ozawa

    2008-12-05T23:59:59.000Z

    In order to establish the computational equivalence between quantum Turing machines (QTMs) and quantum circuit families (QCFs) using Yao's quantum circuit simulation of QTMs, we previously introduced the class of uniform QCFs based on an infinite set of elementary gates, which has been shown to be computationally equivalent to the polynomial-time QTMs (with appropriate restriction of amplitudes) up to bounded error simulation. This result implies that the complexity class BQP introduced by Bernstein and Vazirani for QTMs equals its counterpart for uniform QCFs. However, the complexity classes ZQP and EQP for QTMs do not appear to equal their counterparts for uniform QCFs. In this paper, we introduce a subclass of uniform QCFs, the finitely generated uniform QCFs, based on finite number of elementary gates and show that the class of finitely generated uniform QCFs is perfectly equivalent to the class of polynomial-time QTMs; they can exactly simulate each other. This naturally implies that BQP as well as ZQP and EQP equal the corresponding complexity classes of the finitely generated uniform QCFs.

  14. 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...

  15. 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...

  16. 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...

  17. 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

  18. 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...

  19. 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.

  20. 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 ...

  1. 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.

  2. 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...

  3. 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...

  4. 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

  5. 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

  6. 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, ...

  7. 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

  8. 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 ...

  9. 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

  10. 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...

  11. 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 ...

  12. 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 ...

  13. 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...

  14. 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...

  15. 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 ...

  16. 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 ...

  17. 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...

  18. Apparatus and process to enhance the uniform formation of hollow glass microspheres

    DOE Patents [OSTI]

    Schumacher, Ray F

    2013-10-01T23:59:59.000Z

    A process and apparatus is provided for enhancing the formation of a uniform population of hollow glass microspheres. A burner head is used which directs incoming glass particles away from the cooler perimeter of the flame cone of the gas burner and distributes the glass particles in a uniform manner throughout the more evenly heated portions of the flame zone. As a result, as the glass particles are softened and expand by a released nucleating gas so as to form a hollow glass microsphere, the resulting hollow glass microspheres have a more uniform size and property distribution as a result of experiencing a more homogenous heat treatment process.

  19. 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...

  20. 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...

  1. Effects of demagnetizing factors on transient motion of ferrofluid in a uniform rotating magnetic field

    E-Print Network [OSTI]

    Snively, Michael John

    2011-01-01T23:59:59.000Z

    The mechanisms that lead to bulk flow within a ferrofluid-filled container subjected to a rotating uniform magnetic field are experimentally studied. There are two prevailing theories: spin diffusion theory and flow due ...

  2. Design and construction of uniform glow discharge plasma system operating under atmospheric condition

    SciTech Connect (OSTI)

    Kocum, C.; Ayhan, H. [Biomedical Engineering Department, Baskent University, Ankara 06530 (Turkey); Chemistry Department, Biochemistry Division, Mugla University, Faculty of Science, Koetekli, 48170 Mugla (Turkey)

    2007-06-15T23:59:59.000Z

    The design of a uniform glow discharge plasma system operating without vacuum is presented. A full-bridge switching circuit was used to switch the transformers. The primary windings of transformers were connected in parallel, but in opposite phase to double the output voltage. Theoretically, 20 000 V{sub pp} was obtained. Rectangle copper electrodes were used, and placed parallel to each other. To prevent the spark production that is, to obtain uniformity, two 2 mm Teflon sheets were glued to the electrodes. However, it was observed that the operating frequency also affected the uniformity. For the system presented here, the frequency at which more uniformity was obtained was found to be 14 kHz.

  3. Communication in Federal Politics: Universalism, Policy Uniformity, and the Optimal Allocation of

    E-Print Network [OSTI]

    Communication in Federal Politics: Universalism, Policy Uniformity, and the Optimal Allocation model of communication in federal legislatures to study the incentives of members to engage under consideration, communication between delegates generally suffers from a bias that make truthful

  4. The effects of deposit thermal history on microstructure produced by uniform droplet spray forming

    E-Print Network [OSTI]

    Cherng, Jean-Pei Jeanie

    2002-01-01T23:59:59.000Z

    Uniform droplet spray forming is a process aimed at producing near-net-shape parts directly from the liquid melt by spraying micron-sized droplets onto a movable target. In spray forming, the solidification rate of the ...

  5. Speech synthesis using non-uniform units in the Verbmobil project. 

    E-Print Network [OSTI]

    King, Simon; Portele, Thomas; Höfer, Florian

    1997-01-01T23:59:59.000Z

    We describe a concatenative speech synthesiser for British English which uses the HADIFIX inventory structure originally developed for German by Portele. An inventory of non-uniform units was investigated with the aim of ...

  6. Bipartite Q-polynomial distance-regular graphs and uniform posets

    E-Print Network [OSTI]

    Miklavic, Stefko

    2011-01-01T23:59:59.000Z

    Let $\\G$ denote a bipartite distance-regular graph with vertex set $X$ and diameter $D \\ge 3$. Fix $x \\in X$ and let $L$ (resp. $R$) denote the corresponding lowering (resp. raising) matrix. We show that each $Q$-polynomial structure for $\\G$ yields a certain linear dependency among $RL^2$, $LRL$, $L^2R$, $L$. Define a partial order $\\le$ on $X$ as follows. For $y,z \\in X$ let $y \\le z$ whenever $\\partial(x,y)+\\partial(y,z)=\\partial(x,z)$, where $\\partial$ denotes path-length distance. We determine whether the above linear dependency gives this poset a uniform or strongly uniform structure. We show that except for one special case a uniform structure is attained, and except for three special cases a strongly uniform structure is attained.

  7. Development of a uniform-droplet spray apparatus for high melting temperature metals

    E-Print Network [OSTI]

    Joumaa, Hady K

    2005-01-01T23:59:59.000Z

    The building and operation of a high-temperature uniform droplet spraying (UDS) apparatus extend the performance and capabilities of powder based manufacturing processes. Although the main concepts of operation of the ...

  8. Dynamics of long flexible cylinders at high-mode number in uniform and sheared flows

    E-Print Network [OSTI]

    Swithenbank, Susan B. (Susan Brenda)

    2007-01-01T23:59:59.000Z

    The primary objective of this thesis is to characterize the response of risers at high-mode numbers in sheared and uniform ocean currents. As part of this thesis work, three separate experiments have been planned and ...

  9. Active membrane having uniform physico-chemically functionalized ion channels

    DOE Patents [OSTI]

    Gerald, II, Rex E; Ruscic, Katarina J; Sears, Devin N; Smith, Luis J; Klingler, Robert J; Rathke, Jerome W

    2012-09-24T23:59:59.000Z

    The present invention relates to a physicochemically-active porous membrane for electrochemical cells that purports dual functions: an electronic insulator (separator) and a unidirectional ion-transporter (electrolyte). The electrochemical cell membrane is activated for the transport of ions by contiguous ion coordination sites on the interior two-dimensional surfaces of the trans-membrane unidirectional pores. One dimension of the pore surface has a macroscopic length (1 nm-1000 .mu.m) and is directed parallel to the direction of an electric field, which is produced between the cathode and the anode electrodes of an electrochemical cell. The membrane material is designed to have physicochemical interaction with ions. Control of the extent of the interactions between the ions and the interior pore walls of the membrane and other materials, chemicals, or structures contained within the pores provides adjustability of the ionic conductivity of the membrane.

  10. Dielectrophoresis device and method having non-uniform arrays for manipulating particles

    DOE Patents [OSTI]

    Cummings, Eric B. (Livermore, CA); Fintschenko, Yolanda (Livermore, CA); Simmons, Blake (San Francisco, CA)

    2008-09-02T23:59:59.000Z

    Microfluidic devices according to embodiments of the present invention include an inlet port, an outlet port, and a channel or chamber having a non-uniform array of insulating features on one or more surfaces. Electrodes are provided for generation of a spatially non-uniform electric field across the array. A voltage source, which may be an A.C. and/or a D.C. voltage source may be coupled to the electrodes for the generation of the electric field.

  11. Strategies for improved arterial coordination using actuated control

    E-Print Network [OSTI]

    Nageswara, Ramanan Venkat

    1996-01-01T23:59:59.000Z

    for optimal performance at higher volume levels for a g' en cycle length. At low volumes, any reasonable signal timing strategy works well as long as the detectors work and the traffic signals are coordinated. NETSIM simulation results for pretimed control...

  12. Modeling and control of thermostatically controlled loads

    SciTech Connect (OSTI)

    Backhaus, Scott N [Los Alamos National Laboratory; Sinitsyn, Nikolai [Los Alamos National Laboratory; Kundu, S. [UNIV OF MICHIGAN; Hiskens, I. [UNIV OF MICHIGAN

    2011-01-04T23:59:59.000Z

    As the penetration of intermittent energy sources grows substantially, loads will be required to play an increasingly important role in compensating the fast time-scale fluctuations in generated power. Recent numerical modeling of thermostatically controlled loads (TCLs) has demonstrated that such load following is feasible, but analytical models that satisfactorily quantify the aggregate power consumption of a group of TCLs are desired to enable controller design. We develop such a model for the aggregate power response of a homogeneous population of TCLs to uniform variation of all TCL setpoints. A linearized model of the response is derived, and a linear quadratic regulator (LQR) has been designed. Using the TCL setpoint as the control input, the LQR enables aggregate power to track reference signals that exhibit step, ramp and sinusoidal variations. Although much of the work assumes a homogeneous population of TCLs with deterministic dynamics, we also propose a method for probing the dynamics of systems where load characteristics are not well known.

  13. Dynamic Demand Control with Differentiated QoS in User-in-the-Loop Controlled Cellular Networks

    E-Print Network [OSTI]

    Yanikomeroglu, Halim

    for data rate due to smart mobile devices and laptop dongles with an estimated traffic growth of almost 100 and energy-efficiency. In this paper the temporal user-in-the-loop (UIL) control ap- proach is assumed. This user-centric model implements demand shaping by incentives in form of a dynamic usage-based tariff

  14. 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...

  15. 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 ...

  16. 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

  17. Modeling and control of network traffic for performance and secure communications

    E-Print Network [OSTI]

    Xiong, Yong

    2005-02-17T23:59:59.000Z

    -Based AIMD . . . . . . . . . . . . . . . . . . . . 25 2. Window-Based AIMD . . . . . . . . . . . . . . . . . . 30 F. Analysis for Rate-Based Systems . . . . . . . . . . . . . . 32 1. Rate-Based Network Model . . . . . . . . . . . . . . . 33 2. System...: Robustness of the adaptive sliding window scheme . . . . . . . . . . . . . . . . . . . . . . 96 F. Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 V SUMMARY : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 101 REFERENCES...

  18. Mitigation of traffic-induced bridge vibrations through passive and semi-active control devices

    E-Print Network [OSTI]

    Magnuson, Amy R

    2011-01-01T23:59:59.000Z

    Many of the U.S. bridges today are reaching or have reached their design life and are beginning to deteriorate and are becoming structurally deficient. Much time, effort, money, and resources go into repairing, rehabilitating, ...

  19. Abstract--Developing clear, relevant performance measures for arterials is challenging due to complicated traffic control

    E-Print Network [OSTI]

    Bertini, Robert L.

    to develop freeway performance measures [5]. The Tri-County Metropolitan Transportation District (Tri

  20. Not Quickly, Just in Time: Improving the Timeliness and Reliability of Control Traffic in Utility Networks

    E-Print Network [OSTI]

    Correia, Miguel

    networks, that interconnect the CI facil- ities (e.g., transformation substations). This communication company (e.g., transformation substations), but in a distributed way with systems and applications often] and unavailability may become even more frequent due to denial-of-service attacks (DoS), e.g., ex- ecuted as cyber

  1. Keywords: Congestion Control, Congestion Notification, FECN, enhanced FECN, BCN, and DCN

    E-Print Network [OSTI]

    Jain, Raj

    control has traditionally been handled at the transport (TCP) layer [15]. TCP NewReno, TCP SACK, and TCP Vegas for wired networks, I-TCP, MTCP and Freeze TCP for wireless networks, TCP-F, ELFN, and ATCP for ad developed that control all traffic regardless of the transport (or even network) protocol. Datacenter

  2. 1/12-Scale scoping experiments to characterize double-shell tank slurry uniformity: Test plan

    SciTech Connect (OSTI)

    Bamberger, J.A.; Liljegren, L.M.

    1994-10-01T23:59:59.000Z

    Million gallon double-shell tanks (DSTs) at Hanford are used to store transuranic, high-level, and low-level wastes. These wastes generally consist of a large volume of salt-laden solution covering a smaller volume of settled sludge primarily containing metal hydroxides. These wastes will be retrieved and processed into immobile waste forms suitable for permanent disposal. The current retrieval concept is to use submerged dual-nozzle pumps to mobilize the settled solids by creating jets of fluid that are directed at the tank solids. The pumps oscillate, creating arcs of high-velocity fluid jets that sweep the floor of the tank. After the solids are mobilized, the pumps will continue to operate at a reduced flow rate sufficient to maintain the particles in a uniform suspension. The objectives of these 1/12-scale scoping experiments are to determine how Reynolds number, Froude number, and gravitational settling parameter affect the degree of uniformity achieved during jet mixer pump operation in the full-scale double-shell tanks; develop linear models to predict the degree of uniformity achieved by jet mixer pumps operating in the full-scale double-shell tanks; apply linear models to predict the degree of uniformity that will be achieved in tank 241-AZ-101 and determine whether contents of that tank will be uniform to within {+-} 10% of the mean concentration; and obtain experimental concentration and jet velocity data to compared with the TEMPEST computational and modeling predictions to guide further code development.

  3. Proton beam therapy control system

    DOE Patents [OSTI]

    Baumann, Michael A; Beloussov, Alexandre V; Bakir, Julide; Armon, Deganit; Olsen, Howard B; Salem, Dana

    2013-12-03T23:59:59.000Z

    A tiered communications architecture for managing network traffic in a distributed system. Communication between client or control computers and a plurality of hardware devices is administered by agent and monitor devices whose activities are coordinated to reduce the number of open channels or sockets. The communications architecture also improves the transparency and scalability of the distributed system by reducing network mapping dependence. The architecture is desirably implemented in a proton beam therapy system to provide flexible security policies which improve patent safety and facilitate system maintenance and development.

  4. Proton beam therapy control system

    DOE Patents [OSTI]

    Baumann, Michael A; Beloussov, Alexandre V; Bakir, Julide; Armon, Deganit; Olsen, Howard B; Salem, Dana

    2013-06-25T23:59:59.000Z

    A tiered communications architecture for managing network traffic in a distributed system. Communication between client or control computers and a plurality of hardware devices is administered by agent and monitor devices whose activities are coordinated to reduce the number of open channels or sockets. The communications architecture also improves the transparency and scalability of the distributed system by reducing network mapping dependence. The architecture is desirably implemented in a proton beam therapy system to provide flexible security policies which improve patent safety and facilitate system maintenance and development.

  5. Proton beam therapy control system

    DOE Patents [OSTI]

    Baumann, Michael A. (Riverside, CA); Beloussov, Alexandre V. (Bernardino, CA); Bakir, Julide (Alta Loma, CA); Armon, Deganit (Redlands, CA); Olsen, Howard B. (Colton, CA); Salem, Dana (Riverside, CA)

    2008-07-08T23:59:59.000Z

    A tiered communications architecture for managing network traffic in a distributed system. Communication between client or control computers and a plurality of hardware devices is administered by agent and monitor devices whose activities are coordinated to reduce the number of open channels or sockets. The communications architecture also improves the transparency and scalability of the distributed system by reducing network mapping dependence. The architecture is desirably implemented in a proton beam therapy system to provide flexible security policies which improve patent safety and facilitate system maintenance and development.

  6. Proton beam therapy control system

    DOE Patents [OSTI]

    Baumann, Michael A. (Riverside, CA); Beloussov, Alexandre V. (San Bernardino, CA); Bakir, Julide (Alta Loma, CA); Armon, Deganit (Longmeadow, MA); Olsen, Howard B. (Irvine, CA); Salem, Dana (Riverside, CA)

    2010-09-21T23:59:59.000Z

    A tiered communications architecture for managing network traffic in a distributed system. Communication between client or control computers and a plurality of hardware devices is administered by agent and monitor devices whose activities are coordinated to reduce the number of open channels or sockets. The communications architecture also improves the transparency and scalability of the distributed system by reducing network mapping dependence. The architecture is desirably implemented in a proton beam therapy system to provide flexible security policies which improve patent safety and facilitate system maintenance and development.

  7. 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.

  8. 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.

  9. 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.

  10. Improved ion implant fluence uniformity in hydrogen enhanced glow discharge plasma immersion ion implantation into silicon

    SciTech Connect (OSTI)

    Luo, J. [Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong (China); Department of 702, Beihang University, Beijing 100191 (China); Li, L. H., E-mail: liliuhe@buaa.edu.cn, E-mail: paul.chu@cityu.edu.hk; Liu, H. T.; Xu, Y.; Zuo, X. J.; Zhu, P. Z.; Ma, Y. F. [Department of 702, Beihang University, Beijing 100191 (China); Yu, K. M. [Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720 (United States); Fu, Ricky K. Y.; Chu, Paul K., E-mail: liliuhe@buaa.edu.cn, E-mail: paul.chu@cityu.edu.hk [Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong (China)

    2014-06-15T23:59:59.000Z

    Enhanced glow discharge plasma immersion ion implantation does not require an external plasma source but ion focusing affects the lateral ion fluence uniformity, thereby hampering its use in high-fluence hydrogen ion implantation for thin film transfer and fabrication of silicon-on-insulator. Insertion of a metal ring between the sample stage and glass chamber improves the ion uniformity and reduces the ion fluence non-uniformity as the cathode voltage is raised. Two-dimensional multiple-grid particle-in-cell simulation confirms that the variation of electric field inside the chamber leads to mitigation of the ion focusing phenomenon and the results are corroborated experimentally by hydrogen forward scattering.

  11. A Family of Uniform Strain Tetrahedral Elements and a Method for Connecting Dissimilar Finite Element Meshes

    SciTech Connect (OSTI)

    Dohrmann, C.R.; Heinstein, M.W.; Jung, J.; Key, S.W.

    1999-01-01T23:59:59.000Z

    This report documents a collection of papers on a family of uniform strain tetrahedral finite elements and their connection to different element types. Also included in the report are two papers which address the general problem of connecting dissimilar meshes in two and three dimensions. Much of the work presented here was motivated by the development of the tetrahedral element described in the report "A Suitable Low-Order, Eight-Node Tetrahedral Finite Element For Solids," by S. W. Key {ital et al.}, SAND98-0756, March 1998. Two basic issues addressed by the papers are: (1) the performance of alternative tetrahedral elements with uniform strain and enhanced uniform strain formulations, and (2) the proper connection of tetrahedral and other element types when two meshes are "tied" together to represent a single continuous domain.

  12. The Unreasonable Success of Quantum Probability I: Quantum Measurements as Uniform Fluctuations

    E-Print Network [OSTI]

    Diederik Aerts; Massimiliano Sassoli de Bianchi

    2014-09-11T23:59:59.000Z

    We introduce a 'uniform tension-reduction' (UTR) model, which allows to represent the probabilities associated with an arbitrary measurement situation and use it to explain the emergence of quantum probabilities (the Born rule) as 'uniform' fluctuations on this measurement situation. The model exploits the geometry of simplexes to represent the states, in a way that the measurement probabilities can be derived as the 'Lebesgue measure' of suitably defined convex subregions of the simplexes. We consider a very simple and evocative physical realization of the abstract model, using a material point particle which is acted upon by elastic membranes, which by breaking and collapsing produce the different possible outcomes. This easy to visualize mechanical realization allows one to gain considerable insight into the possible hidden structure of an arbitrary measurement process. We also show that the UTR-model can be further generalized into a 'general tension-reduction' (GTR) model, describing conditions of lack of knowledge generated by 'non-uniform' fluctuations. In this ampler framework, particularly suitable to describe experiments in cognitive science, we define and motivate a notion of 'universal measurement', describing the most general possible condition of lack of knowledge in a measurement, emphasizing that the uniform fluctuations characterizing quantum measurements can also be understood as an average over all possible forms of non-uniform fluctuations which can be actualized in a measurement context. This means that the Born rule of quantum mechanics can be understood as a first order approximation of a more general non-uniform theory, thus explaining part of the great success of quantum probability in the description of different domains of reality. This is the first part of a two-part article.

  13. Geometry of the Uniform Spanning Forest: Transitions in Dimensions 4, 8, 12

    E-Print Network [OSTI]

    Itai Benjamini; Harry Kesten; Yuval Peres; Oded Schramm

    2003-02-13T23:59:59.000Z

    The uniform spanning forest (USF) in Z^d is the weak limit of random, uniformly chosen, spanning trees in [-n,n]^d. Pemantle proved that the USF consists a.s. of a single tree if and only if d = 9. More generally, let N(x,y) be the minimum number of edges outside the USF in a path joining x and y in Z^d. Then a.s. max{N(x,y) : x,y in Z^d} is the integer part of (d-1)/4. The notion of stochastic dimension for random relations in the lattice is introduced and used in the proof.

  14. The first and second monotone integral principles for fundamental solutions of uniformly elliptic equations

    E-Print Network [OSTI]

    Xiao, Jie

    2009-01-01T23:59:59.000Z

    Two optimal monotone integral principles (equivalently for the Laplacian, two sharp iso-weighted-volume inequalities) are established through extending the first and second integral bounds of H. Weinberger for the Green functions (i.e., fundamental solutions) of uniformly elliptic equations in terms of the layer-cake formula, a one-dimensional monotone integral principle, and the isoperimetric and Jenson's inequalities with sharp constants. Surprisingly, a special setting of the first principle can be used to not only verify the low-dimensional P\\'olya conjecture for the principal eigenvalue of the Laplacian but also to characterize the geometry of the Nash inequality for a strong uniform elliptic equation.

  15. Gravitational waves interacting with a spinning charged particle in the presence of a uniform magnetic field

    E-Print Network [OSTI]

    D. B. Papadopoulos

    2003-12-23T23:59:59.000Z

    The equations which determine the response of a spinning charged particle moving in a uniform magnetic field to an incident gravitational wave are derived in the linearized approximation to general relativity. We verify that 1) the components of the 4-momentum, 4-velocity and the components of the spinning tensor, both electric and magnetic moments, exhibit resonances and 2) the co-existence of the uniform magnetic field and the GW are responsible for the resonances appearing in our equations. In the absence of the GW, the magnetic field and the components of the spin tensor decouple and the magnetic resonances disappear.

  16. 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

  17. 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

  18. 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

  19. 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

  20. 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...

  1. Fall 2013 (Revised 10.10.13) 1 of 5 Department of Civil & Environmental Engineering

    E-Print Network [OSTI]

    Bertini, Robert L.

    .aspx 3. Manual on Uniform Traffic Control Devices for Streets and Highways (MUTCD 2003), Federal 2 R 27-Sep Human Factors and Traffic Control Lecture Notes 3 T 8-Oct Measuring System Performance.5-8.9 17 T 26-Nov Lab - SAND Lab 8 Mode and Route 18 R 28-Nov No Class Thanksgiving 19 T 3-Dec Safety

  2. 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

  3. OPTIMIZATION OF TRANSIENT HEATER SETTINGS TO PROVIDE SPATIALLY UNIFORM HEATING IN

    E-Print Network [OSTI]

    Morton, David

    in foundries, baking ovens that cook food, infrared heating systems that cure painted surfaces, and rapidOPTIMIZATION OF TRANSIENT HEATER SETTINGS TO PROVIDE SPATIALLY UNIFORM HEATING IN MANUFACTURING PROCESSES INVOLVING RADIANT HEATING K. J. Daun, J. R. Howell, and D. P. Morton Department of Mechanical

  4. Training for Emergencies Need for some uniformity of training across airlines. Concern is especially about

    E-Print Network [OSTI]

    Training for Emergencies · Need for some uniformity of training across airlines. Concern is especially about variability in amount of training for emergencies. Not enough training in general for emergencies. · What are the criteria for training for success. · Try a "hypertext" approach to simulator

  5. Non-uniform Heat Generation in Micro Catalytic Combustor Takashi Okamasa*, Yuji Suzuki, and Nobuhide Kasagi

    E-Print Network [OSTI]

    Kasagi, Nobuhide

    Non-uniform Heat Generation in Micro Catalytic Combustor Takashi Okamasa*, Yuji Suzuki@thtlab.t.u-tokyo.ac.jp Abstract We developed a micro catalytic combustor using high-precision ceramic tape-casting technology and nano-porous alumina catalyst layer. It is found that failure of the ceramic combustor occurs due

  6. Numerical Modelling of Unsaturated Flow in Uniform and Heterogeneous Waste Rock Piles

    E-Print Network [OSTI]

    Aubertin, Michel

    Numerical Modelling of Unsaturated Flow in Uniform and Heterogeneous Waste Rock Piles O Fala1 , M Aubertin1,3 , J Molson1 , B Bussière2,3 , G W Wilson4 , R Chapuis1 and V Martin1 ABSTRACT Waste rock piles these piles, many physical, geochemical and biological processes can contribute to the production of AMD

  7. Uniform basin growth over the last 500 ka, North Anatolian Fault, Marmara Sea, Turkey

    E-Print Network [OSTI]

    Shillington, Donna J.

    Uniform basin growth over the last 500 ka, North Anatolian Fault, Marmara Sea, Turkey Christopher C, Dokuz Eylül University, Izmir, Turkey c Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, USA d Department of Geophysics, Istanbul Technical University, Turkey e Department of Earth

  8. Uniform Sampling for Directed P2P Networks Cyrus Hall and Antonio Carzaniga

    E-Print Network [OSTI]

    Carzaniga, Antonio

    for unstructured search, data replication, and monitoring algorithms. Such uniform sam- pling is supported no assumptions about the underlying P2P network. This al- gorithm, called doubly stochastic converge (DSC, such that the resulting transition matrix is doubly stochastic. DSC is fully decentralized and is designed to work on both

  9. EFFECT OF GEOMETRY AND OPERATING PARAMETERS ON SIMULATED SOFC STACK TEMPERATURE UNIFORMITY

    SciTech Connect (OSTI)

    Koeppel, Brian J.; Lai, Canhai; Khaleel, Mohammad A.

    2011-08-10T23:59:59.000Z

    A uniform temperature field is desirable in the solid oxide fuel cell stack to avoid local hot regions that contribute to material degradation, thermal stresses, and differences in electrochemical performance. Various geometric and operational design changes were simulated by numerical modeling of co-flow and counter-flow multi-cell stacks, and the effects on stack maximum temperature, stack temperature difference, and maximum cell temperature difference were characterized. The results showed that 40-60% on-cell steam reforming of methane and a reduced reforming rate of 25-50% of the nominal rate was beneficial for a more uniform temperature field. Fuel exhaust recycling up to 30% was shown to be advantageous for reforming fuels and co-flow stacks with hydrogen fuel, but counter-flow stacks with hydrogen fuel showed higher temperature differences. Cells with large aspect ratios showed a more uniform temperature response due to either the strong influence of the inlet gas temperatures or the greater thermal exchange with the furnace boundary condition. Improved lateral heat spreading with thicker interconnects was demonstrated, but greater improvements towards a uniform thermal field for the same amount of interconnect mass could be achieved using thicker heat spreader plates appropriately distributed along the stack height.

  10. Boston University Computer Science Technical Report No. 2005027 Computing a Uniform Scaling

    E-Print Network [OSTI]

    Parameter for 3D Registration of Lung Surfaces Vladimir Rodeski 1 , William Mullally 1 , Carissa Bellardine of Biomedical Engineering Boston University Abstract. A di#culty in lung image registration is accounting for chang­ es in the size of the lungs due to inspiration. We propose two methods for computing a uniform

  11. Boston University Computer Science Technical Report No. 2005-027 Computing a Uniform Scaling

    E-Print Network [OSTI]

    Parameter for 3D Registration of Lung Surfaces Vladimir Rodeski1 , William Mullally1 , Carissa Bellardine2 Engineering Boston University Abstract. A difficulty in lung image registration is accounting for chang- es in the size of the lungs due to inspiration. We propose two methods for computing a uniform scale parameter

  12. SYNCHRONIZATION AND TRANSIENT STABILITY IN POWER NETWORKS AND NON-UNIFORM KURAMOTO OSCILLATORS

    E-Print Network [OSTI]

    Bullo, Francesco

    between the power network model and a first-order model of coupled oscillators. Assuming overdamped will rely increasingly on renewables such as wind and solar power. Since these renewable power sourcesSYNCHRONIZATION AND TRANSIENT STABILITY IN POWER NETWORKS AND NON-UNIFORM KURAMOTO OSCILLATORS

  13. Synchronization and Transient Stability in Power Networks and Non-Uniform Kuramoto Oscillators

    E-Print Network [OSTI]

    Bullo, Francesco

    between the power network model and a first-order model of coupled oscillators. Assuming overdamped increasingly on renewable energy sources, such as wind and solar power, which cause stochastic disturbancesSynchronization and Transient Stability in Power Networks and Non-Uniform Kuramoto Oscillators

  14. A novel lithography technique for formation of large areas of uniform nanostructures

    E-Print Network [OSTI]

    Shahriar, Selim

    such as plasmonics, sensors, storage devices, solar cells, nano-filtration and artificial kidneys require applications such as surface plasmonics[1] , data storage[2] , optoelectronic devices[3] , and nanoA novel lithography technique for formation of large areas of uniform nanostructures Wei Wu

  15. Optimal Hlderian functional central limit theorems for uniform empirical and quantile

    E-Print Network [OSTI]

    Suquet, Charles

    Fn between its consecutive jumps). Denote by Gpg n the polygonal uniform sample quantile function) - t , pg n (t) := n Gpg n (t) - t , t [0, 1]. It is well known that pg n and pg n converge in law to B

  16. Effects of Highly Non-uniform Illumination Distribution on Electrical Performance of Solar Cells

    E-Print Network [OSTI]

    Effects of Highly Non-uniform Illumination Distribution on Electrical Performance of Solar Cells E.T.Franklin, J.S Coventry Centre for Sustainable Energy Systems Australian National University Canberra ACT 0200 AUSTRALIA Telephone: +61 02 6125 3976 Facsimile: +61 02 6125 0506 E-mail: evan@faceng.anu.edu.au Abstract

  17. Moment-based Uniform Deviation Bounds for k-means and Friends

    E-Print Network [OSTI]

    Wang, Deli

    Moment-based Uniform Deviation Bounds for k-means and Friends Matus Telgarsky Sanjoy Dasgupta are fit to m points by heuristically minimizing the k-means cost; what is the corresponding fit over this mechanism, a soft clustering variant of k-means cost is also considered, namely the log likelihood of a Gaus

  18. A uniform price auction with locational price adjustments for competitive electricity markets

    E-Print Network [OSTI]

    b School of Electrical Engineering, Phillips Hall, Cornell University, Ithaca, NY 14853, USA cA uniform price auction with locational price adjustments for competitive electricity markets of Agricultural, Resource and Managerial Economics (ARME), Warren Hall, Cornell University, Ithaca, NY 14853, USA

  19. Self-Folding Origami: Shape Memory Composites Activated by Uniform Heating

    E-Print Network [OSTI]

    Wood, Robert

    Self-Folding Origami: Shape Memory Composites Activated by Uniform Heating Michael T. Tolley1 systems. Here, self- folding origami are presented, which consist of shape memory composites materials and tools. The folding mechanism based on the in-plane contraction of a sheet of shape memory

  20. Uniform Directional Alignment of Single-Walled Carbon Nanotubes in Viscous Polymer Flow

    E-Print Network [OSTI]

    Garmestani, Hamid

    of the carbon nanotubes on their ability to enhance the mechanical properties of the composites that they form of carbon nanotube dispersion on composite properties, their degree of alignment in the respective matrixUniform Directional Alignment of Single-Walled Carbon Nanotubes in Viscous Polymer Flow Erin