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Note: This page contains sample records for the topic "uniform traffic control" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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1

Analysis of airspace traffic structure and air traffic control techniques  

E-Print Network (OSTI)

Air traffic controller cognitive processes are a limiting factor in providing safe and efficient flow of traffic. Therefore, there has been work in understanding the factors that drive controllers decision-making processes. ...

De Albuquerque Filho, Emilio Alverne Falcão

2012-01-01T23:59:59.000Z

2

Neural Networks for Real-Time Traffic Signal Control  

Science Conference Proceedings (OSTI)

Real-time traffic signal control is an integral part of the urban traffic control system, and providing effective real-time traffic signal control for a large complex traffic network is an extremely challenging distributed control problem. This paper ... Keywords: Distributed control, hybrid model, neural control, online learning, traffic signal control

D. Srinivasan; Min Chee Choy; R. L. Cheu

2006-09-01T23:59:59.000Z

3

Modeling the Air Traffic Controller's Cognitive Projection Process  

E-Print Network (OSTI)

Cognitive projection enables the operator of a supervisory control system, such as air traffic control, to

Davison Reynolds, Hayley J

2006-11-20T23:59:59.000Z

4

Detecting intrusions in encrypted control traffic  

Science Conference Proceedings (OSTI)

Because of a lack of attack signatures and different forms of attacks, signature-based network intrusion detection systems currently provide insufficient protection for industrial control traffic. A combination of two anomaly detection approaches found ... Keywords: industrial control systems, intrusion detection, smart grids

Maarten Hoeve

2013-11-01T23:59:59.000Z

5

Control of Freeway Traffic Flow in Unstable Phase by Theory  

Science Conference Proceedings (OSTI)

This paper devises a freeway controller that is capable of stabilizing traffic flow when the traffic system is in the unstable (congested) phase, in which a shock wave is likely to occur in the presence of any inhomogeneity and where the system is on ... Keywords: $H_{infty}$ control, $H_{infty}$ control, intelligent transportation system (ITS), ramp metering, speed signaling, traffic flow control

Yi-Hsien Chiang; Jyh-Ching Juang

2008-06-01T23:59:59.000Z

6

186 IEEE TRANSACTIONS ON INFORMATION THEORY, VOL. 39, NO. 1, JANUARY 1993 On the Uniform-Traffic Capacity  

E-Print Network (OSTI)

at the same time. Construc- tive lower bounds as well as some upper bounds on the uniform-traffic capacityof to a local area network and the network usage by each station increase, the required transmission rate was performed mostly at IBM Almaden Research Center, San Jose, CA. Y. Birk is with the Department of Electrical

7

Modeling the air traffic controller's cognitive projection process  

E-Print Network (OSTI)

Cognitive projection enables the operator of a supervisory control system, such as air traffic control, to use predicted future behavior of the system to make decisions about if and how to control the system. New procedures ...

Reynolds, Hayley J. Davison (Hayley Jaye Davison)

2006-01-01T23:59:59.000Z

8

Distributed Air Traffic Control : A Human Safety Perspective  

E-Print Network (OSTI)

The issues in air traffic control have so far been addressed with the intent to improve resource utilization and achieve an optimized solution with respect to fuel comsumption of aircrafts, efficient usage of the available airspace with minimal congestion related losses under various dynamic constraints. So the focus has almost always been more on smarter management of traffic to increase profits while human safety, though achieved in the process, we believe, has remained less seriously attended. This has become all the more important given that we have overburdened and overstressed air traffic controllers managing hundreds of airports and thousands of aircrafts per day. We propose a multiagent system based distributed approach to handle air traffic ensuring complete human (passenger) safety without removing any humans (ground controllers) from the loop thereby also retaining the earlier advantages in the new solution. The detailed design of the agent system, which will be easily interfacable with the existin...

Nikumbh, Sarvesh; Vartak, Rahul

2011-01-01T23:59:59.000Z

9

Intelligent Cruise Control design based on a traffic flow specification  

E-Print Network (OSTI)

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 Systems (AVCS) play a key role in traffic automation. Central to the Development of AVCS for vehicles is the design of an Intelligent Cruise Control (ICC) system that automates the task of maintaining a safe following distance. A properly designed ICC system has the potential to smooth traffic flows and increase the traffic flow capacity of the existing highway. Near term applications of AVCS cannot rely on communication between vehicles to maintain a safe following system. In an Autonomous Intelligent Cruise Control (AICC) Systems, the throttle and brake are controlled by a computer based on onboard sensory information, and the steering task is manually controlled. AICC systems proposed so far do not consider their impact on the traffic flow stability. In this thesis, an AICC system is synthesized from a traffic flow specification on stability and capacity. Analytical results of this thesis are verified by numerical simulations.

Huandra, Rusli

1998-01-01T23:59:59.000Z

10

Mitigating Complexity in Air Traffic Control: The Role of Structure-Based Abstractions  

E-Print Network (OSTI)

Cognitive complexity is a limiting factor on the capacity and efficiency of the Air Traffic Control

Hansman, R. John

11

Traffic measurement and analysis of building automation and control networks  

Science Conference Proceedings (OSTI)

This paper proposes a framework for a flow-based network traffic monitoring of building automation and control networks. Current approaches to monitor special environment networks are limited to checking accessibility and a state of monitored devices. ... Keywords: BACnet, BACnetflow, analysis, automation, building, control, measurement, network

Radek Krej?í; Pavel ?eleda; Jakub Dobrovolný

2012-06-01T23:59:59.000Z

12

Multi-intersection Traffic Light Control Using Infinitesimal Perturbation Analysis  

E-Print Network (OSTI)

We address the traffic light control problem for multiple intersections in tandem by viewing it as a stochastic hybrid system and developing a Stochastic Flow Model (SFM) for it. Using Infinitesimal Perturbation Analysis (IPA), we derive on-line gradient estimates of a cost metric with respect to the controllable green and red cycle lengths. The IPA estimators obtained require counting traffic light switchings and estimating car flow rates only when specific events occur. The estimators are used to iteratively adjust light cycle lengths to improve performance and, in conjunction with a standard gradient-based algorithm, to obtain optimal values which adapt to changing traffic conditions. Simulation results are included to illustrate the approach.

Geng, Yanfeng

2012-01-01T23:59:59.000Z

13

Intelligent Control in Automation Based on Wireless Traffic Analysis  

SciTech Connect

Wireless technology is a central component of many factory automation infrastructures in both the commercial and government sectors, providing connectivity among various components in industrial realms (distributed sensors, machines, mobile process controllers). However wireless technologies provide more threats to computer security than wired environments. The advantageous features of Bluetooth technology resulted in Bluetooth units shipments climbing to five million per week at the end of 2005 [1, 2]. This is why the real-time interpretation and understanding of Bluetooth traffic behavior is critical in both maintaining the integrity of computer systems and increasing the efficient use of this technology in control type applications. Although neuro-fuzzy approaches have been applied to wireless 802.11 behavior analysis in the past, a significantly different Bluetooth protocol framework has not been extensively explored using this technology. This paper presents a new neurofuzzy traffic analysis algorithm of this still new territory of Bluetooth traffic. Further enhancements of this algorithm are presented along with the comparison against the traditional, numerical approach. Through test examples, interesting Bluetooth traffic behavior characteristics were captured, and the comparative elegance of this computationally inexpensive approach was demonstrated. This analysis can be used to provide directions for future development and use of this prevailing technology in various control type applications, as well as making the use of it more secure.

Kurt Derr; Milos Manic

2007-08-01T23:59:59.000Z

14

Intelligent Control in Automation Based on Wireless Traffic Analysis  

SciTech Connect

Wireless technology is a central component of many factory automation infrastructures in both the commercial and government sectors, providing connectivity among various components in industrial realms (distributed sensors, machines, mobile process controllers). However wireless technologies provide more threats to computer security than wired environments. The advantageous features of Bluetooth technology resulted in Bluetooth units shipments climbing to five million per week at the end of 2005 [1, 2]. This is why the real-time interpretation and understanding of Bluetooth traffic behavior is critical in both maintaining the integrity of computer systems and increasing the efficient use of this technology in control type applications. Although neuro-fuzzy approaches have been applied to wireless 802.11 behavior analysis in the past, a significantly different Bluetooth protocol framework has not been extensively explored using this technology. This paper presents a new neurofuzzy traffic analysis algorithm of this still new territory of Bluetooth traffic. Further enhancements of this algorithm are presented along with the comparison against the traditional, numerical approach. Through test examples, interesting Bluetooth traffic behavior characteristics were captured, and the comparative elegance of this computationally inexpensive approach was demonstrated. This analysis can be used to provide directions for future development and use of this prevailing technology in various control type applications, as well as making the use of it more secure.

Kurt Derr; Milos Manic

2007-09-01T23:59:59.000Z

15

Transformation of quantum states using uniformly controlled rotations  

E-Print Network (OSTI)

We consider a unitary transformation which maps any given state of an $n$-qubit quantum register into another one. This transformation has applications in the initialization of a quantum computer, and also in some quantum algorithms. Employing uniformly controlled rotations, we present a quantum circuit of $2^{n+2}-4n-4$ CNOT gates and $2^{n+2}-5$ one-qubit elementary rotations that effects the state transformation. The complexity of the circuit is noticeably lower than the previously published results. Moreover, we present an analytic expression for the rotation angles needed for the transformation.

Mikko Mottonen; Juha J. Vartiainen; Ville Bergholm; Martti M. Salomaa

2004-07-01T23:59:59.000Z

16

SIMULATION BASED EVALUATION OF MERGE METERING CONCEPT FOR TRAFFIC CONTROL AT WORK ZONES.  

E-Print Network (OSTI)

??The merge metering strategy controls the traffic entering a work zone section of a freeway through the use of metering signals at the merging area… (more)

PAVITHRAN, MANOJKUMAR

2006-01-01T23:59:59.000Z

17

Human-centered automation of air traffic control operations in the terminal area  

E-Print Network (OSTI)

Introduction: Air Traffic Control operations are described extensively in the ATC manuals such as the Airman's Information Manual [1] and the ATC Controller's Handbook [2]. Mathematical analysis has also been conducted for ...

Idris, Husni Rifat

1994-01-01T23:59:59.000Z

18

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

E-Print Network (OSTI)

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 ...

Davison, H. J.

19

CoCoSpot: Clustering and recognizing botnet command and control channels using traffic analysis  

Science Conference Proceedings (OSTI)

We present CoCoSpot, a novel approach to recognize botnet command and control channels solely based on traffic analysis features, namely carrier protocol distinction, message length sequences and encoding differences. Thus, CoCoSpot can deal with obfuscated ... Keywords: Botnet C&C, Botnet detection, Network security, Traffic analysis

Christian J. Dietrich; Christian Rossow; Norbert Pohlmann

2013-02-01T23:59:59.000Z

20

Anticipative Ramp Metering Control for Freeway Traffic Networks T. Bellemans, B. De Schutter, and B. De Moor  

E-Print Network (OSTI)

Anticipative Ramp Metering Control for Freeway Traffic Networks T. Bellemans, B. De Schutter, and B.deschutter@dcsc.tudelft.nl Abstract-- We develop an anticipative model-based predictive traffic control approach for ramp metering in freeway traffic networks. If ramp metering is imple- mented in a freeway network with alternative routes

Note: This page contains sample records for the topic "uniform traffic control" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Mitigating complexity in Air Traffic Control : the role of structure-based abstractions  

E-Print Network (OSTI)

Cognitive complexity is a limiting factor on the capacity and efficiency of the Air Traffic Control (ATC) system. A multi-faceted cognitive ethnography approach shows that structure, defined as the physical and informational ...

Histon, Jonathan M

2008-01-01T23:59:59.000Z

22

Adaptive Distributed Traffic Control Service for DDoS Attack Mitigation  

E-Print Network (OSTI)

Frequency and intensity of Internet attacks are rising with an alarming pace. Several technologies and concepts were proposed for fighting distributed denial of service (DDoS) attacks: traceback, pushback, i3, SOS and Mayday. This paper shows that in the case of DDoS reflector attacks they are either ineffective or even counterproductive. We then propose a novel concept and system that extends the control over network traffic by network users to the Internet using adaptive traffic processing devices. We safely delegate partial network management capabilities from network operators to network users. All network packets with a source or destination address owned by a network user can now also be controlled within the Internet instead of only at the network user's Internet uplink. By limiting the traffic control features and by restricting the realm of control to the "owner" of the traffic, we can rule out misuse of this system. Applications of our system are manifold: prevention of source address spoofing, DDoS attack mitigation, distributed firewall-like filtering, new ways of collecting traffic statistics, traceback, distributed network debugging, support for forensic analyses and many more.

Thomas Dübendorfer; Matthias Bossardt; Bernhard Plattner

2005-01-01T23:59:59.000Z

23

Air traffic control communication at Detroit Metro Wayne County Airport August 17, 1987  

E-Print Network (OSTI)

This report contains a transcript of radio communications between air traffic controllers and pilots. The transcript was prepared as part of the ATC Interaction Research Project (AIR Project) at the Oregon Graduate Institute, which has been investigating computational representations of air traffic control (ATC) communication. The transcript was made from a tape prepared and narrated by Lawrence L. Porter, a consultant in the field of air traffic control and aircraft accidents. It follows Northwest Airlines Flight 255 as it landed and took off from Detroit Metro Wayne County Airport on August 17, 1987, showing the pilot's interaction with each of the controller positions (Arrival Radar, Local Control, Ground Control, and Clearance Delivery). A copy of this recording on cassette may be obtained by writing to the Department of Computer Science and Engineering of the Oregon Graduate Institute. The authors thank Mr. Porter for providing the recording and narration. The transcript is in two parts. The section entitled "Full Transcript" depicts all exchanges chronologically as they occurred. However, air traffic control dialogue can be viewed as many interleaved yet fairly independent conversations, so in the "Separated Transcripts" section utterances are grouped by aircraft to show the course of each individual conversation. The utterance numbers from the full transcript are preserved in the separated transcripts so that the utterance context may be located easily. The notation and transcription conventions used in these transcripts are described in Appendix A. Appendix B contains charts describing the airspace around Detroit Metro Wayne County Airport.. The utterances in this transcript contain specialized terms and usages specific to the Air Traffic Control (ATC) domain. B...

Karen Ward; David Novick; Carolyn Sousa

1990-01-01T23:59:59.000Z

24

Experiences in deploying a wireless mesh network testbed for traffic control  

Science Conference Proceedings (OSTI)

Wireless mesh networks (WMN) have attracted considerable interest in recent years as a convenient, flexible and low-cost alternative to wired communication infrastructures in many contexts. However, the great majority of research on metropolitan-scale ... Keywords: deployment, traffic control, wireless mesh network

Kun-chan Lan; Zhe Wang; Mahbub Hassan; Tim Moors; Rodney Berriman; Lavy Libman; Maximilian Ott; Bjorn Landfeldt; Zainab Zaidi

2007-10-01T23:59:59.000Z

25

Joint Metering and Conflict Resolution in Air Traffic Control Jerome Le Ny  

E-Print Network (OSTI)

Joint Metering and Conflict Resolution in Air Traffic Control Jerome Le Ny and George J. Pappas programming. A key feature of this approach is its ability to also take into account various metering and metering in order to support this task. This paper addresses this problem by presenting a trajectory

Plotkin, Joshua B.

26

History of Air Traffic Control Nolan, Chap 1  

E-Print Network (OSTI)

· Increases in aircraft performance · Improvements in Instrumentation ­ Gyroscope for wings-level to horizon Control ­ Colored flags (red stop, green go) · St Louis ­ 1929 ­ Light Guns · Aim narrow beam of high-intensity light (red stop, green go) ­ Radio Communication · Two-way communication · Radios expensive, unreliable

27

Genetic fuzzy logic approach to local ramp metering control using microscopic traffic simulation.  

E-Print Network (OSTI)

??Ramp metering, one of the most effective solutions for improving motorway traffic flows, is playing increasingly important role in traffic management systems. Because of its… (more)

Yu, Xue Feng

2009-01-01T23:59:59.000Z

28

Computer program development specification for the air traffic control subsystem of the Man-Vehicle Systems Research Facility.  

E-Print Network (OSTI)

Functional summary: The Air Traffic Control (ATC) Subsystem of the Man-Vehicle System Research Facility (MVSRF) is a hardware/software complex which provides the MVSRF with the capability of simulating the multi-aircraft, ...

Massachusetts Institute of Technology. Flight Transportation Laboratory

1982-01-01T23:59:59.000Z

29

Environmental Assessment for Proposed Access Control and Traffic Improvements at Los Alamos National Laboratory, Los Alamos, New Mexico  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

29 29 Environmental Assessment for Proposed Access Control and Traffic Improvements at Los Alamos National Laboratory, Los Alamos, New Mexico August 23, 2002 Department of Energy National Nuclear Security Administration Los Alamos Site Office Environmental Assessment for Proposed Access Control and Traffic Improvements at LANL DOE LASO August 23, 2002 iii Contents ACRONYMS AND TERMS ......................................................................................................... VI EXECUTIVE SUMMARY......................................................................................................... VIII 1.0 PURPOSE AND NEED ............................................................................................................

30

Anticipative Ramp Metering Control Using Dynamic Traffic M. van den Berg, T. Bellemans, B. De Schutter, B. De Moor, J. Hellendoorn  

E-Print Network (OSTI)

Anticipative Ramp Metering Control Using Dynamic Traffic Assignment M. van den Berg, T. Bellemans control approach for ramp metering in freeway networks. If ramp metering is implemented in a freeway-based predictive traffic control framework. In this way, anticipative model predictive control for ramp metering

31

A proposal of new price-based Call Admission Control rules for Guaranteed Performance services multiplexed with Best Effort traffic  

Science Conference Proceedings (OSTI)

Pricing for the use of telecommunication services is an issue widely treated in the literature. In the last years it has received a growing attention in order to establish various fairness criteria in the bandwidth allocation for each type of traffic ... Keywords: Asynchronous Transfer Mode, Best Effort services, Call Admission Control, Flow control, Guaranteed Performance services, IP Quality of Service, Pricing, Proportional Fairness

Marco Baglietto; Raffaele Bolla; Franco Davoli; Mario Marchese; Maurizio Mongelli

2003-08-01T23:59:59.000Z

32

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

E-Print Network (OSTI)

In this paper a novel device aimed at controlling the mechanical vibrations of plates by means of a set of electrically-interconnected piezoelectric actuators is described. The actuators are embedded uniformly in the plate wherein they connect every node of an electric network to ground, thus playing the two-fold role of capacitive element in the electric network and of couple suppliers. A mathematical model is introduced to describe the propagation of electro-mechanical waves in the device; its validity is restricted to the case of wave-forms with wave-length greater than the dimension of the piezoelectric actuators used. A self-resonance criterion is established which assures the possibility of electro-mechanical energy exchange. Finally the problem of vibration control in simply supported and clamped plates is addressed; the optimal net-impedance is determined. The results indicate that the proposed device can improve the performances of piezoelectric actuation

Stefano Vidoli; Francesco dell'Isola

2010-07-09T23:59:59.000Z

33

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

E-Print Network (OSTI)

In this paper a novel device aimed at controlling the mechanical vibrations of plates by means of a set of electrically-interconnected piezoelectric actuators is described. The actuators are embedded uniformly in the plate wherein they connect every node of an electric network to ground, thus playing the two-fold role of capacitive element in the electric network and of couple suppliers. A mathematical model is introduced to describe the propagation of electro-mechanical waves in the device; its validity is restricted to the case of wave-forms with wave-length greater than the dimension of the piezoelectric actuators used. A self-resonance criterion is established which assures the possibility of electro-mechanical energy exchange. Finally the problem of vibration control in simply supported and clamped plates is addressed; the optimal net-impedance is determined. The results indicate that the proposed device can improve the performances of piezoelectric actuation

Vidoli, Stefano

2010-01-01T23:59:59.000Z

34

Control Engineering Practice 14 (2006) 757767 Model predictive control for ramp metering of motorway traffic  

E-Print Network (OSTI)

Control Engineering Practice 14 (2006) 757­767 Model predictive control for ramp metering metering implemented. Two types of controllers are compared: a traditional ALINEA based controller and a model predictive control based ramp metering controller. In order to evaluate the controllers

35

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

DOE Patents (OSTI)

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.

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

2002-01-01T23:59:59.000Z

36

Assessing the Impact of Weather on Traffic Intensity  

Science Conference Proceedings (OSTI)

This paper focuses on the effect of weather conditions on daily traffic intensities (the number of cars passing a specific segment of a road). The main objective is to examination whether or not weather conditions uniformly alter daily traffic ...

Mario Cools; Elke Moons; Geert Wets

2010-01-01T23:59:59.000Z

37

Demonstration of spatially programmable chemical vapor deposition: Model-based uniformity/nonuniformity control  

E-Print Network (OSTI)

Demonstration of spatially programmable chemical vapor deposition: Model-based uniformity of deposition experiments to develop a model relating precursor concentration to film thickness in each segment region. As a demonstration of spatial programmability, the system was reprogramed using this model

Rubloff, Gary W.

38

Controlled synthesis of millimeter-long silicon nanowires with uniform electronic properties  

E-Print Network (OSTI)

We report the nanocluster-catalyzed growth of ultralong and highly uniform single-crystalline silicon nanowires (SiNWs) with millimeter-scale lengths and aspect ratios up to approximately 100 000. The average SiNW growth rate using disilane (Si2H6) at400°C was31µm/min, while the growth rate determined for silane (SiH4) reactant under similar growth conditions was 130 times lower. Transmission electron microscopy studies of millimeter-long SiNWs with diameters of 20-80 nm show that the nanowires grow preferentially along the ?110 ? direction independent of diameter. In addition, ultralong SiNWs were used as building blocks to fabricate one-dimensional arrays of field-effect transistors (FETs) consisting of approximately 100 independent devices per nanowire. Significantly, electrical transport measurements demonstrated that the millimeter-long SiNWs had uniform electrical properties along the entire length of wires, and each device can behave as a reliable FET with an on-state current, threshold voltage, and transconductance values (average (1 standard deviation) of 1.8 ( 0.3 µA, 6.0 ( 1.1 V, 210 ( 60 nS, respectively. Electronically uniform millimeter-long SiNWs were also functionalized with monoclonal antibody receptors and used to demonstrate multiplexed detection of cancer marker proteins with a single nanowire. The synthesis of structurally and electronically uniform ultralong SiNWs may open up new opportunities for integrated nanoelectronics and could serve as unique building blocks linking integrated structures from the nanometer through millimeter length scales. Semiconducting nanowires (NWs) 1-5 are attractive building blocks for fabricating functional nanodevices with single

Won Il Park; Gengfeng Zheng; Xiaocheng Jiang; Bozhi Tian; Charles M. Lieber

2008-01-01T23:59:59.000Z

39

Concentration with uniform flux  

SciTech Connect

A modification of a parabolic cylinder concentrator is developed to procedure uniform flux. The controlling surface equation is given. A three-dimensional ray-trace technique is used to obtain the shape of the image at the focal plane of a thin slice of the mirror. Also, the concentration distribution for uniform flux is given. 1 references, 7 figures.

Not Available

1986-01-01T23:59:59.000Z

40

SignalGuru: Leveraging mobile phones for collaborative traffic signal schedule advisory  

E-Print Network (OSTI)

While traffic signals are necessary to safely control competing flows of traffic, they inevitably enforce a stop-and-go movement pattern that increases fuel consumption, reduces traffic flow and causes traffic jams. These ...

Koukoumidis, Emmanouil

Note: This page contains sample records for the topic "uniform traffic control" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

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

E-Print Network (OSTI)

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 ...

Katz, Jeffrey G.

1980-01-01T23:59:59.000Z

42

FAQS Qualification Card - Transportation and Traffic Management |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Transportation and Traffic Management Transportation and Traffic Management FAQS Qualification Card - Transportation and Traffic Management A key element for the Department's Technical Qualification Programs is a set of common Functional Area Qualification Standards (FAQS) and associated Job Task Analyses (JTA). These standards are developed for various functional areas of responsibility in the Department, including oversight of safety management programs identified as hazard controls in Documented Safety Analyses (DSA). For each functional area, the FAQS identify the minimum technical competencies and supporting knowledge and skills for a typical qualified individual working in the area. FAQC-TransportationAndTrafficManagement.docx Description Transportation and Traffic Management Qualification Card

43

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

E-Print Network (OSTI)

Grid, including the global Internet. Similarly, the ability to provide traffic engineering for a site. ILNP enables concurrent multi-path transmission for a flow, without re- quiring multicast routing in Figure 1 for the site network because it maps to many real scenarios, e.g. a warship (mobile network

Bhatti, Saleem N.

44

Stability issues for dynamic traffic assignment  

Science Conference Proceedings (OSTI)

This paper explores stability issues for operational route guidance control strategies for vehicular traffic networks equipped with advanced information systems, and develops a general procedure for the stability analysis of the associated dynamic traffic ... Keywords: Dynamical systems, Feedback control, Lyapunov methods, Stability analysis

S. Peeta; T. -H. Yang

2003-01-01T23:59:59.000Z

45

A Cooperative Approach to Interdomain Traffic Engineering  

E-Print Network (OSTI)

For performance or cost reasons, Autonomous Systems (AS) often need to control the flow of their incoming interdomain traffic. Controlling its incoming traffic is a difficult task since it often implies influencing ASes on the path. The current BGP-based techniques that an AS can use for this purpose are primitive. Moreover, their effect is often difficult to predict.

Bruno Quoitin; Olivier Bonaventure

2005-01-01T23:59:59.000Z

46

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

E-Print Network (OSTI)

Rail-highway grade crossings are amongst the most dangerous of intersections a driver will encounter. One out of every nine accidents at rail-highway crossings produces a fatality. In half of these cases, the crossing is an active crossing, meaning that active devices such as flashing lights with or without automatic gates signal the approach of a train. Annually, approximately 250 people die in crashes with trains at active crossings. Another form of active protection is the use of highway traffic signals. Highway traffic signals have been used as a form of active rail-highway crossing control in several states. The Manual of Uniform Traffic Control Devices currently prohibits the use of highway traffic signals on mainline track crossings even though these devices are a well understood and common traffic control device at highway-highway intersections, particularly in urban environments where the majority of active crossings are to be found. The objective of this research was to determine the factors that contribute to fatal vehicle train crashes at rail-highway crossings equipped with either flashing light signals, flashing light signals with automatic gates, or highway traffic signals. Secondly, it attempted to determine whether the use of highway traffic signals at railhighway crossings offer any safety benefits over the use of conventional active traffic control devices. Fatal accident records obtained from the Fatal Accident Reporting System (FARS) were used in this analysis. The driver related factors coded by the police officers in FARS, at fatal active grade crossing locations, were predominantly driver error factors. Three contributing factors that were common to all active crossing fatalities were the involvement of young drivers (less than 30 years old), drunk drivers and the lack signals appeared to offer safety benefits over the other standard active devices with regards to the above three contributing factors, the apparent benefit may be due to the fact that highway traffic signals experience lower night time train volumes. The accuracy of the FARS database description of the traffic control device was also of concern, after a cross check with the DOT/AAR database was performed.

Frieslaar, Andre Henry

1997-01-01T23:59:59.000Z

47

Chapter 3, Commercial and Industrial Lighting Controls Evaluation Protocol: The Uniform Methods Project: Methods for Determining Energy Efficiency Savings for Specific Measures  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

3: Commercial and 3: Commercial and Industrial Lighting Controls Evaluation Protocol Stephen Carlson, DNV KEMA Subcontract Report NREL/SR-7A30-53827 April 2013 The Uniform Methods Project: Methods for Determining Energy Efficiency Savings for Specific Measures 3 - 1 Chapter 3 - Table of Contents 1 Measure Description .............................................................................................................. 2 2 Application Conditions of Protocol ....................................................................................... 3 3 Savings Calculations .............................................................................................................. 5 3.1 Algorithms ....................................................................................................................... 5

48

Particle swarm optimization applied to vertical traffic scheduling in buildings  

Science Conference Proceedings (OSTI)

Vertical traffic scheduling is significant in evaluating the quality of property management. An excellent vertical traffic scheduling approach aims at enhancing the system handling capacity and reducing the waiting time, journey time and energy consumption, ... Keywords: dynamic zoning, elevator group control system, particle swarm optimization, round-trip time, vertical traffic scheduling

Zhonghua Li; Hong-Zhou Tan; Yunong Zhang

2007-09-01T23:59:59.000Z

49

Development of Adaptive Signal Control (ASC) Based on Automatic Vehicle Location (AVL) System and Its Applications  

E-Print Network (OSTI)

into Flexible Traffic Control Systems, TRB State-of-the-artTraffic Signal Control System: Architecture, Algorithms, andlength for urban traffic control systems. Proceedings of the

Wu, Guoyuan

2010-01-01T23:59:59.000Z

50

Traffic flow wide-area surveillance system definition  

SciTech Connect

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.

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

51

Getting Traffic Lights Talking to Improve Topeka's Traffic Tunnel |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Getting Traffic Lights Talking to Improve Topeka's Traffic Tunnel Getting Traffic Lights Talking to Improve Topeka's Traffic Tunnel Getting Traffic Lights Talking to Improve Topeka's Traffic Tunnel October 8, 2010 - 11:16am Addthis Topeka is using Recovery Act funding to resynchronize 22 traffic lights. | Photo by Linda Voss Topeka is using Recovery Act funding to resynchronize 22 traffic lights. | Photo by Linda Voss Lindsay Gsell The five-lane 21st street corridor in Topeka is a hub for restaurants, shopping and entertainment. "This is where everyone in Topeka goes to shop," says Topeka resident Linda Voss. In addition to food and fun, the one-mile corridor is home to seven traffic lights-and for drivers, a potential traffic stop every 754 feet, or a little more than two football fields. "The traffic signals are a challenge to time in this area," says Voss,

52

Airborne Traffic Flow Data and Traffic Management  

E-Print Network (OSTI)

. N. Johnson (1928), "Maryland Aerial Survey of Highway Traffic Between Baltimore and Washington-lane highway between Baltimore and Washington #12;atlas Johnson's Aerial Photography Source: Johnson (1928) #12 it could well be that aerial photographs will prove comparatively cheap" (p. 297). B. D. Greenshields (1947

Bertini, Robert L.

53

Uniform Laws and Regulations  

Science Conference Proceedings (OSTI)

Page 1. Page 2. Uniform Laws and Regulations in the areas of legal metrology and engine fuel quality as adopted by the ...

2011-09-13T23:59:59.000Z

54

Uniform Laws and Regulations  

Science Conference Proceedings (OSTI)

Page 1. Uniform Laws and Regulations in the areas of legal metrology and engine fuel quality as adopted by the 96th National Conference on ...

2012-07-12T23:59:59.000Z

55

Measuring UAS pilot responses to common air traffic clearances  

Science Conference Proceedings (OSTI)

Using a simulated ground control station, this study documents the methods for measuring the verbal response and execution time of unmanned aerial system (UAS) pilots to direct commands from air traffic controllers (ATCos). Although prior research has ... Keywords: air traffic management, measured response, unmanned aerial systems

Jason Ziccardi, Zach Roberts, Ryan O'Connor, Conrad Rorie, Gregory Morales, Vernol Battiste, Thomas Strybel, Dan Chiappe, Kim-Phuong L. Vu, Jay Shively

2013-07-01T23:59:59.000Z

56

Traffic Toll of Wildlife  

NLE Websites -- All DOE Office Websites (Extended Search)

which continues to increase. The first study of this traffic hazard was made by W. P. Flint of the Illinois Natural History Survey. He kept year-round records during 1930, 1931...

57

Critical infrastructure protection: Resource efficient sampling to improve detection of less frequent patterns in network traffic  

Science Conference Proceedings (OSTI)

Networked critical infrastructures are of national importance. However, such infrastructures are running 24/7. The supervisory control and data acquisition system (SCADA) of the critical infrastructure will generate enormous network traffic continuously. ... Keywords: Critical infrastructure, Sampling, Traffic analysis

Abdun Naser Mahmood; Jiankun Hu; Zahir Tari; Christopher Leckie

2010-07-01T23:59:59.000Z

58

Traffic Engineering and QoS Optimization of Integrated Voice & Data Networks  

Science Conference Proceedings (OSTI)

This book describes, analyzes, and recommends traffic engineering (TE) and quality of service (QoS) optimization methods for integrated voice/data dynamic routing networks. These functions control a network's response to traffic demands and other stimuli, ... Keywords: Networking

Gerald R. Ash

2006-10-01T23:59:59.000Z

59

FAA Air Traffic Organization Safety Management | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

FAA Air Traffic Organization Safety Management FAA Air Traffic Organization Safety Management FAA Air Traffic Organization Safety Management September 20, 2012 Presenter: Mark DeNicuolo, Manager Performance and Analyses Air Traffic Organization Safety and Technical Training Federal Aviation Administration Topics Covered: En Route centers handle 40.5 million aircraft per year FAA/contract towers handle: - 51.2 million airport operations - 39 million instrument operations 732 million passenger enplanements Over 5,000 civil, public-use airports Approximately 33,300 ATO employees - More than 15,000 air traffic controllers - More than 7,000 technicians and engineers 21 ARTCCs, 513 ATCTs, 17 FSSs, 3 AFSSs FAA Air Traffic Organization Safety Management More Documents & Publications FAQS Reference Guide - Aviation Manager

60

Virtual cityscapes: recent advances in crowd modeling and traffic simulation  

Science Conference Proceedings (OSTI)

We survey our recent work on interactive modeling, generation, and control of large-scale crowds and traffic for simulating digital cities. These include multi-agent navigation, simulating large crowds with emerging behaviors as well as interactive simulation ... Keywords: continuum traffic, crowd modeling, digital cities, multi-agent simulation

Ming C. Lin; Dinesh Manocha

2010-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "uniform traffic control" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

A SET OF NEW TRAFFIC-RESPONSIVE RAMP-METERING ALGORITHMS AND  

E-Print Network (OSTI)

A SET OF NEW TRAFFIC-RESPONSIVE RAMP-METERING ALGORITHMS AND MICROSCOPIC SIMULATION RESULTS switching traffic-responsive ramp-metering controller that adapts to the different traffic dynamics under between the model sampling time and the metering-rate update interval. In addition, a queue length

Horowitz, Roberto

62

Structural analysis of network traffic flows  

Science Conference Proceedings (OSTI)

Network traffic arises from the superposition of Origin-Destination (OD) flows. Hence, a thorough understanding of OD flows is essential for modeling network traffic, and for addressing a wide variety of problems including traffic engineering, traffic ... Keywords: network traffic analysis, principal component analysis, traffic engineering

Anukool Lakhina; Konstantina Papagiannaki; Mark Crovella; Christophe Diot; Eric D. Kolaczyk; Nina Taft

2004-06-01T23:59:59.000Z

63

COPE: traffic engineering in dynamic networks  

Science Conference Proceedings (OSTI)

Traffic engineering plays a critical role in determining the performance and reliability of a network. A major challenge in traffic engineering is how to cope with dynamic and unpredictable changes in traffic demand. In this paper, we propose COPE, a ... Keywords: COPE, oblivious routing, optimization, traffic engineering, unpredictable traffic

Hao Wang; Haiyong Xie; Lili Qiu; Yang Richard Yang; Yin Zhang; Albert Greenberg

2006-08-01T23:59:59.000Z

64

Does Daylight Savings Time Affect Traffic Accidents?  

E-Print Network (OSTI)

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 of daylight using the year as control group. Using data on traffic accidents in Texas based on crash reports provided by the Texas Transportation Institute, and a difference in differences technique, this study creates a regression model to determine how significant this factor is in affecting traffic accident patterns as observed in the data. Results show that DST has no statistically significant effect on traffic accidents of all categories including (but not limited to) highway, non-highway, and accidents, accidents with injuries and no injuries, and accidents by drivers of all age-groups. This implies that the federal government’s policy of DST (and its extension) has no costs incurred by a rise in motor vehicle crashes when it gets dark early.

Deen, Sophia 1988-

2012-05-01T23:59:59.000Z

65

A shared data environment for the Military Traffic Management Command Directorate of International Traffic  

SciTech Connect

In September 1991, Oak Ridge National Laboratory (ORNL) completed tasking to assist the Military Traffic Management Command Directorate of International Traffic (MTIT) in the analysis of a potential Shared Data Environment (SDE) for MTIT automated cargo traffic systems. This analysis was a preliminary effort with emphasis on documentation of requirements, examination of design alternatives, and identification of specific MTIT systems' data sharing problems. This report records the results of the ORNL analysis. The SDE envisioned by ORNL at this point in the analysis is not merely a repository of information; it is also a system that allows processing of distributed data. To provide high-level access to and control over international cargo processes, ORNL recommends a loosely coupled, replicated database design with high-speed communications among all sites.

Russell, D.L.; Wheeler, V.V. (Tennessee Univ., Knoxville, TN (United States)); Truett, L.F. (Oak Ridge National Lab., TN (United States))

1992-01-01T23:59:59.000Z

66

A shared data environment for the Military Traffic Management Command Directorate of International Traffic  

SciTech Connect

In September 1991, Oak Ridge National Laboratory (ORNL) completed tasking to assist the Military Traffic Management Command Directorate of International Traffic (MTIT) in the analysis of a potential Shared Data Environment (SDE) for MTIT automated cargo traffic systems. This analysis was a preliminary effort with emphasis on documentation of requirements, examination of design alternatives, and identification of specific MTIT systems` data sharing problems. This report records the results of the ORNL analysis. The SDE envisioned by ORNL at this point in the analysis is not merely a repository of information; it is also a system that allows processing of distributed data. To provide high-level access to and control over international cargo processes, ORNL recommends a loosely coupled, replicated database design with high-speed communications among all sites.

Russell, D.L.; Wheeler, V.V. [Tennessee Univ., Knoxville, TN (United States); Truett, L.F. [Oak Ridge National Lab., TN (United States)

1992-01-01T23:59:59.000Z

67

Leveraging router programmability for traffic matrix computation  

Science Conference Proceedings (OSTI)

Traffic matrices are used by Internet Service Providers as an input for many business-critical activities like capacity planning and traffic engineering. Despite their importance, current approaches for computing traffic matrices are either unpractical ...

Giacomo Balestra; Salvatore Luciano; Maurizio Pizzonia; Stefano Vissicchio

2010-11-01T23:59:59.000Z

68

Traffic observation and situation assessment  

Science Conference Proceedings (OSTI)

Utilization of camera systems for surveillance tasks (e. g. traffic monitoring) has become a standard procedure and has been in use for over 20 years. However, most of the cameras are operated locally and data analyzed manually. Locally means here a ... Keywords: cooperative distributed vision, multi-camera orientation, multi-camera system, multi-target tracking, situation, traffic observation

Ralf Reulke; Dominik Rueß; Kristian Manthey; Andreas Luber

2011-06-01T23:59:59.000Z

69

Fast monitoring of traffic subpopulations  

Science Conference Proceedings (OSTI)

Network accounting, forensics, security, and performance monitoring applications often need to examine detailed traces from subsets of flows ("subpopulations"), where the application desires flexibility in specifying the subpopulation (e.g., to detect ... Keywords: counters, flexsample, sampling, traffic statistics, traffic subpopulations

Anirudh Ramachandran; Srinivasan Seetharaman; Nick Feamster; Vijay Vazirani

2008-10-01T23:59:59.000Z

70

FAQS Reference Guide - Transportation and Traffic Management...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Transportation and Traffic Management FAQS Reference Guide - Transportation and Traffic Management This reference guide addresses the competency statements in the September 2002...

71

FAQS Reference Guide - Transportation and Traffic Management...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

FAQS Reference Guide - Transportation and Traffic Management FAQS Reference Guide - Transportation and Traffic Management This reference guide addresses the competency statements...

72

Test instances for the traffic assignment problem  

E-Print Network (OSTI)

Test instances for the traffic assignment problem. F. Babonneau. ?. J.-P. Vial. ?. January 8, 2008. Abstract. This short note on the Traffic Assignment Problem ...

73

Road traffic model using distributed camera network  

Science Conference Proceedings (OSTI)

Traffic monitoring/prediction using a distributed camera network is presented in this paper. The activities on each road link are monitored and features are derived to identify the pattern. Then it is learnt, classified, predicted and communicated to ... Keywords: hidden Markov model, spatial interest points, spatial-temporal interest points, traffic classification, traffic prediction, traffic surveillance

S. Indu; Sankalp Arora; Santanu Chaudhury; Asok Bhattacharyya

2010-12-01T23:59:59.000Z

74

Virtual urban traffic network simulator  

E-Print Network (OSTI)

In this project, I designed and implemented a virtual urban traffic network simulator. The simulator serves as a testbed for human-subject experiments to determine driver behavior in road networks and also as a platform ...

Uh, Jason (Jason J.)

2011-01-01T23:59:59.000Z

75

Real-Time Traffic Information for Emergency Evacuations  

Science Conference Proceedings (OSTI)

There are many instances in which it is possible to plan ahead for an emergency evacuation (e.g., a chemical processing facility explosion). For those cases, if an accident 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. Due to cost constraints, only large urban areas have traffic sensor deployments that permit access to some sort of real-time traffic information; an evacuation taking place in other areas of the country would have to proceed without real-time traffic information. In order to improve operations during a vehicular emergency evacuation anywhere, a system of sensors that uses newly developed real-time traffic-information-gathering technologies to assess traffic conditions and to detect incidents on the main evacuation routes is presented in this paper. A series of tests, both in a controlled environment and in the field, were conducted to study the feasibility of such a 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 paper.

Franzese, Oscar [ORNL; Zhang, Li [Mississippi State University (MSU); Mahmoud, Anas M. [Mississippi State University (MSU)

2010-01-01T23:59:59.000Z

76

A new hybrid traffic engineering routing algorithm for bandwidth guaranteed traffic  

Science Conference Proceedings (OSTI)

This paper presents a new hybrid traffic engineering routing algorithm for bandwidth guaranteed traffic. Former traffic engineering routing algorithms mainly optimize one of the three objectives: minimizing the hop count, balancing the load and minimizing ...

Zhaowei Meng; Jinshu Su; Stefano Avallone

2006-11-01T23:59:59.000Z

77

Anisotropic mesoscopic traffic simulation approach to support large-scale traffic and logistic modeling and analysis  

Science Conference Proceedings (OSTI)

Large-scale traffic and transportation logistics analysis requires a realistic depiction of network traffic condition in a dynamic manner. In the past decades, vehicular traffic simulation approaches have been increasingly developed and applied to describe ...

Ye Tian; Yi-Chang Chiu

2011-12-01T23:59:59.000Z

78

Mixed Manual/Semi-Automated Traffic: A Macroscopic Analysis  

E-Print Network (OSTI)

of Traffic Flow with Mixed Manual and Semi- Automatedof Mixed Semi-Automated/Manual Traffic”, SAE Technical Paperof traffic flow with mixed manual and semi- automated

Bose, Arnab; Ioannou, Petros

2001-01-01T23:59:59.000Z

79

LED traffic lights: New technology signals major energy savings  

SciTech Connect

Using light-emitting diode technology to replace incandescent lamps in traffic signals promises energy savings upwards of 60 percent for each of the estimated quarter of a million controlled intersections in the United States. LED units use only 9 to 25 watts instead of the 67 to 150 watts used by each incandescent lamp. Though their first cost is relatively high, energy savings result in paybacks of 1 to 5 years. LED retrofit kits are available for red signal disks and arrows, and installations in several states have proven successful, although minor improvements are addressing concerns about varying light output and controller circuitry. Retrofitting green lamps is not yet feasible, because color standards of the Institute of Traffic Engineers cannot be met with existing LED technology. Yellow lamps have such low duty factors (they`re on only 3 percent of the time) that retrofitting with LED signals is not cost-effective. LEDs last much longer than incandescents, allowing municipalities to not only reduce their electricity bills, but to save on maintenance costs as well. As further incentive, some utilities are beginning to implement rebate programs for LED traffic signal retrofits. Full approval of LED units is still awaited from the Institute of Traffic Engineers (ITE), the standard-setting body for traffic safety devices. Local and state governments ultimately decide what specifications to require for traffic lights, and the growing body of successful field experience with LEDs appears to be raising their comfort level with the technology. The California Department of Transportation is developing an LED traffic light specification, and two California utilities, Southern California Edison and Pacific Gas and Electric, have provided rebates for some pilot installations.

Houghton, D.

1994-12-31T23:59:59.000Z

80

Optimizing urban traffic flow using Genetic Algorithm with Petri net analysis as fitness function  

Science Conference Proceedings (OSTI)

This paper describes a new methodology adopted for urban traffic stream optimization. By using Petri net analysis as fitness function of a Genetic Algorithm, an entire urban road network is controlled in real time. With the advent of new technologies ... Keywords: Genetic Algorithm, Optimization, Petri net, Urban traffic

Henrique Dezani, Regiane D. S. Bassi, Norian Marranghello, Luís Gomes, Furio Damiani, Ivan Nunes Da Silva

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "uniform traffic control" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Overview and Principles of Internet Traffic Engineering  

Science Conference Proceedings (OSTI)

This memo describes the principles of Traffic Engineering (TE) in the Internet. The document is intended to promote better understanding of the issues surrounding traffic engineering in IP networks, and to provide a common basis for the development ...

D. Awduche; A. Chiu; A. Elwalid; I. Widjaja; X. Xiao

2002-05-01T23:59:59.000Z

82

Road traffic congestion in the developing world  

Science Conference Proceedings (OSTI)

Road traffic jams continue to remain a major problem in most cities around the world, especially in developing regions resulting in massive delays, increased fuel wastage and monetary losses. Due to the poorly planned road networks, a common outcome ... Keywords: congestion collapse, simulation, traffic congestion, traffic detection

Vipin Jain; Ashlesh Sharma; Lakshminarayanan Subramanian

2012-03-01T23:59:59.000Z

83

Manifold learning visualization of network traffic data  

Science Conference Proceedings (OSTI)

When traffic anomalies or intrusion attempts occur on the network, we expect that the distribution of network traffic will change. Monitoring the network for changes over time, across space (at various routers in the network), over source and destination ... Keywords: data mining, internet traffic anomaly detection & forensics

Neal Patwari; Alfred O. Hero, III; Adam Pacholski

2005-08-01T23:59:59.000Z

84

Spatiotemporal periodical pattern mining in traffic data  

Science Conference Proceedings (OSTI)

The widespread use of road sensors has generated huge amount of traffic data, which can be mined and put to various different uses. Finding frequent trajectories from the road network of a big city helps in summarizing the way the traffic behaves in ... Keywords: KL-divergence, density-based clustering, periodic patterns, probability distribution matrices, road network, spatiotemporal data, traffic data

Tanvi Jindal, Prasanna Giridhar, Lu-An Tang, Jun Li, Jiawei Han

2013-08-01T23:59:59.000Z

85

Dimensioning optical networks under traffic growth models  

Science Conference Proceedings (OSTI)

In this paper, we consider the problem of dimensioning a large optical wavelength-division multiplexing (WDM) network assuming the traffic is growing over time. Traffic between pairs of nodes is carried through lightpaths which are high-bandwidth end-to-end ... Keywords: capacity allocation, capacity exhaustion probability, stochastic modeling, traffic growth model

Tapan Kumar Nayak; Kumar N. Sivarajan

2003-12-01T23:59:59.000Z

86

Uniform power plant identification system  

Science Conference Proceedings (OSTI)

In the seventies in the Federal Republic of Germany a uniform power plant identification system (Kraftwerks-Kennzeichen-System, KKS) was developed and introduced. It allows to keep the identification by all engineering disciplines from planning to waste management for any type of power plant. The paper explains the historical development, the structure and the application of this system.

Christiansen, W. (RWE Energie AG, Hauptverwaltung, Essen (DE)); Pannenbacker, K. (GABO mbH, Erlangen (DE)); Popp, H. (Siemens AG, Bereich Anlagentechnik, Erlangen (DE)); Seltmann, A. (ABB Kraftwerke AG, Mannheim (DE))

1990-01-01T23:59:59.000Z

87

Non-uniform interpolatory subdivision via splines  

Science Conference Proceedings (OSTI)

We present a framework for deriving non-uniform interpolatory subdivision algorithms closely related to non-uniform spline interpolants. Families of symmetric non-uniform interpolatory 2n-point schemes of smoothness C^n^-^1 are presented for n=2,3,4 ... Keywords: 6-point, Interpolatory, Non-uniform, Parameterized Catmull-Rom, Spline, Subdivision

Kestutis Kar?Iauskas; JöRg Peters

2013-03-01T23:59:59.000Z

88

Automatic Parallel Parking and Returning to Traffic Maneuvers  

E-Print Network (OSTI)

This video illustrates a control approach developed to perform parallel parking and returning to traffic maneuvers for a car capable of autonomous motion. The key idea is to carry out a motion control procedure involving a "Localization-Planning-Execution" cycle until a specified location of the car relative to its environment is reached. Range measurements are used to model environmental objects around the car. The automatic maneuvers developed are demonstrated on an experimental electric autonomous car in a usual traffic environment. 1 Introduction Many drivers have difficulties or make errors while parallel parking or in pulling out of a parking place. A control approach to automatic parallel parking and pulling out maneuvers has been developed and tested on an experimental electric car capable of autonomous motion. The manual car driving is supplemented with an automatic steering and velocity control [1]. The car is equiped with: (1) - a sensor unit to measure relative distances ...

Igor Paromtchik; Christian Laugier

1998-01-01T23:59:59.000Z

89

Method for uniformly bending conduits  

DOE Patents (OSTI)

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.

Dekanich, S.J.

1984-04-27T23:59:59.000Z

90

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

E-Print Network (OSTI)

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

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

91

Particle Swarm Optimization of Ceramic Roller Kiln Temperature Field Uniformity Using Computational Fluid Dynamics Tools  

Science Conference Proceedings (OSTI)

In this paper ceramic roller kiln temperature field uniformity is mainly researched using computational fluid dynamics tools and particle swarm optimization (PSO). In consideration of burning and burning temperature control is key technique of burning ... Keywords: PSO, temperature field uniformity, multiple liner regression, uniform design, ceramic roller kiln design

Wenbi Rao; Peng Li

2009-06-01T23:59:59.000Z

92

Automated Speech Recognition in air traffic control  

E-Print Network (OSTI)

Over the past few years, the technology and performance of Automated Speech Recognition (ASR) systems has been improving steadily. This has resulted in their successful use in a number of industrial applications. Motivated ...

Trikas, Thanassis

1987-01-01T23:59:59.000Z

93

Challenging the supremacy of traffic matrices in anomaly detection  

Science Conference Proceedings (OSTI)

Multiple network-wide anomaly detection techniques proposed in the literature define an anomaly as a statistical outlier in aggregated network traffic. The most popular way to aggregate the traffic is as a Traffic Matrix, where the traffic is ... Keywords: anomaly detection, traffic aggregation

Augustin Soule; Fernando Silveira; Haakon Ringberg; Christophe Diot

2007-10-01T23:59:59.000Z

94

A Preliminary Study on Anticipatory Stigmergy for Traffic Management  

Science Conference Proceedings (OSTI)

In this paper, we propose an anticipatory stigmergy model for decentralized traffic congestion management. Managing traffic congestion is one of the main issues for smart cities, and many works have been trying to address it from the IT and Transportation ... Keywords: traffic management, traffic information, traffic simulation, stigmergy

Jun Takahashi; Ryo Kanamori; Takayuki Ito

2012-12-01T23:59:59.000Z

95

Future Air traffic management Concepts Evaluation Tool ...  

Solar Photovoltaic; Solar Thermal; Startup ... Actual air traffic data and weather information are utilized to evaluate an aircraft’s flight-plan ...

96

Real-Time Traffic Information.pub  

NLE Websites -- All DOE Office Websites (Extended Search)

Traffic Information for Emergency Evacuation Operations Research Brief Oak Ridge National Laboratory managed by UT-Battelle, LLC for the U.S. Department of Energy under Contract...

97

Traffic scheduling mechanism based on graph theory for Power Saving mode of IEEE 802.11 distributed coordinator function  

Science Conference Proceedings (OSTI)

In IEEE 802.11 Power Saving (PS) mode specified for Independent Basic Service Set (IBSS), mobile stations announce their pending data packets within Announcement Traffic Indication Message (ATIM) window immediately after the reception ... Keywords: IEEE 80211, MAC protocol, ad hoc networks, distributed coordinator, energy efficiency, graph theory, medium access control, power saving, power-efficient, time synchronisation function, traffic scheduling

M. H. Ye; C. T. Lau; A. B. Premkumar

2009-03-01T23:59:59.000Z

98

LED Traffic Lights Get Buy American Stamp | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

LED Traffic Lights Get Buy American Stamp LED Traffic Lights Get Buy American Stamp November 30, 2010 - 10:19am Addthis Red. Yellow. Green. What LED traffic signals don't say: Made...

99

Traffic condition tracking and visualization in virtual city testbed  

E-Print Network (OSTI)

Computer traffic simulation is a tool widely used to understand how humans behave under varying traffic conditions. The Virtual City Testbed is a traffic simulation framework built to closely model human behavior by allowing ...

Zhu, Boyuan, M. Eng. Massachusetts Institute of Technology

2011-01-01T23:59:59.000Z

100

Examining the Spatial Distribution of Externalities: Freight Rail Traffic and Home Values in Los Angeles  

E-Print Network (OSTI)

This paper measures the impact of infrastructure expansion on local home values and examines the persistence of that impact over distance. Specifically, I exploit a natural experiment in which rail traffic from the Los Angeles seaport, one of the busiest in the country, was permanently redirected from several tracks to a central line, termed the Alameda Corridor. I link a rich, repeat-sale housing dataset to plausibly exogenous changes in local rail traffic to estimate these effects, controlling for local price trends using a Case-Shiller style housing index. Using the actual traffic changes the result is an estimated $3500 decrease in average home value where traffic increased and a $1300 increase in average home value where rail traffic was reduced. The welfare impact of concentrating a negative externality on a smaller population should depend on the convexity of the cost function, but I find evidence that suggests the marginal cost is symmetric for winners and losers. Instead, the total welfare impact hinges on the efficiency gains achieved by relocating the traffic from circuitous routes to the more direct Alameda Corridor, thereby affecting fewer homeowners. While the net gains are minimal, the re-routing of traffic resulted in a transfer of housing wealth of approximately $200 million.

Michael Futch

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "uniform traffic control" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

On Mobile Agents Resistance to Traffic Analysis  

Science Conference Proceedings (OSTI)

This paper will concern itself with a formulation of a traffic analysis problem for mobile agents. It is an interesting theoretical problem as well as a critical feature when using agents on a massive scale in decision making systems. The decision making ... Keywords: Mobile agents security, security protocols, side channel attacks, traffic analysis

Kamil Kulesza; Zbigniew Kotulski; Konrad Kulesza

2006-01-01T23:59:59.000Z

102

Traffic data repository at the WIDE project  

Science Conference Proceedings (OSTI)

It becomes increasingly important for both network researchers and operators to know the trend of network traffic and to find anomaly in their network traffic. This paper describes an on-going effort within the WIDE project to collect a set of free tools ...

Kenjiro Cho; Koushirou Mitsuya; Akira Kato

2000-06-01T23:59:59.000Z

103

An Exploration of the Market for Traffic Information  

E-Print Network (OSTI)

for Traffic of the Market Information by MatthewMalchowproviders then market their information to broadcastAn Exploration of the Market for Traffic Information Shirley

Chan, Shirley; Malchow, Matthew; Kanafani, Adib

1997-01-01T23:59:59.000Z

104

BTS (version 1.0): Bottleneck Traffic Simulator User's Manual  

E-Print Network (OSTI)

Traffic Simulator User's Manual Wei Hua Lin Randolph W. HallTraffic Simulator User’ Manual s Wei Hua Lin Randolph W.

Lin, Wei Hua; Hall, Ranolph W.

1991-01-01T23:59:59.000Z

105

Fermilab | Traffic Safety at Fermilab |  

NLE Websites -- All DOE Office Websites (Extended Search)

Photo of Street Sign: No Cell Phones While Driving Photo of Street Sign: No Cell Phones While Driving Remember: No on-site cell phone use while driving. Speed limits: Don't let warm weather give you a lead foot The roads are clear, the sun is bright, and the urge to drive a little faster is lurking in the back of our minds. We have our sunglasses on and are flexing our hands in our driving gloves. But before you hit the accelerator take five seconds and think. Remember that posted speeds on site take into consideration visibility, road width and conditions, traffic patterns and other safety factors. Double yellow lines and warning signs are posted to augment safety considerations in that area as well. Fermilab has adopted, as a minimum standard, portions of the State of Illinois Vehicle Code and the Rules of the Road. These are the same

106

On Modeling MPEG Video Traffics  

E-Print Network (OSTI)

This paper traces the development/evolution of three of our recently proposed MPEG coded video traffic models, that can capture the statistical properties of MPEG video data. The basic ideas behind these models are to decompose an MPEG compressed video sequence into several parts according to motion /scene complexity or data structure. Each part is described by a self-similar process. These different self-similar processes are then combined to form the respective models. In addition, Beta distribution is used to characterize the marginal cumulative distribution (CDF) of the self-similar processes. Comparison among the three models shows that the latest model (called the simple IPB composite model) is the most practical one in terms of accuracy and complexity. Simulations based on many real MPEG compressed movie sequences, including StarWars, have demonstrated that the simple model can capture the autocorrelation function (ACF) and the marginal CDF very closely.

Nirwan Ansari; Hai Liu; Yun Q. Shi; Senior Member; Hong Zhao

2002-01-01T23:59:59.000Z

107

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

E-Print Network (OSTI)

Short-term traffic flow forecasting is a critical function in advanced traffic management systems (ATMS) and advanced traveler information systems (ATIS). Accurate forecasting results are useful to indicate future traffic conditions and assist traffic managers in seeking solutions to congestion problems on urban freeways and surface streets. There is new research interest in short-term traffic flow forecasting due to recent developments in ITS technologies. Previous research involves technologies in multiple areas, and a significant number of forecasting methods exist in literature. However, forecasting reliability is not properly addressed in existing studies. Most forecasting methods only focus on the expected value of traffic flow, 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 studies the dependency among the variance part of traffic flow data and provides a prediction range to indicate the reliability of traffic flow forecasting. We proposed an ARIMA-GARCH (Autoregressive Integrated Moving Average- AutoRegressive Conditional Heteroskedasticity) model to study the volatile nature of traffic flow data. Another problem of existing studies is that most methods have limited forecasting abilities when there is missing data in historical or current traffic flow data. We developed a General Regression Neural Network(GRNN) based multivariate forecasting method to deal with this issue. This method uses upstream information to predict traffic flow at the studied site. The study results indicate that the ARIMA-GARCH model outperforms other methods in non-missing data situations, while the GRNN model performs better in missing data situations.

Zhang, Yanru

2011-08-01T23:59:59.000Z

108

Uniform-burning matrix burner  

DOE Patents (OSTI)

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.

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

2001-01-01T23:59:59.000Z

109

Stream traffic management over an ATM passive optical network  

Science Conference Proceedings (OSTI)

Keywords: ATM traffic management, fibre-in-the-loop, passive optical network (PON), service disciplines

Maurice Gagnaire; Sašo Stojanovski

2000-05-01T23:59:59.000Z

110

Measurement and performance evaluation of NFS traffic in ATM network  

Science Conference Proceedings (OSTI)

This article has three parts. At first, we explore traffic characterization of an ATM local area network and find the traffic presents both long and short range dependence in nature. Secondly, one long range dependent traffic model (fast fractional Gaussian ... Keywords: ATM, NFS, Traffic measurement

Jung-Shian Li; A Wolisz; R Popescu-Zeletin

1999-01-01T23:59:59.000Z

111

Patent Harmonization: Creating Uniform Patent Laws  

Science Conference Proceedings (OSTI)

Patent Harmonization: Creating Uniform Patent Laws. David V. Radack. You may have seen or heard the phrase "patent harmonization" used when discussing ...

112

Fermilab | Traffic Safety at Fermilab | Resources  

NLE Websites -- All DOE Office Websites (Extended Search)

Resources Resources Bicycle and Pedestrian Safety: Pedestrian Safety Awareness for Families Pedestrian Safety at Crosswalks Pedestrian Safety @ Fermilab Bicycle Helmet Safety Institute Take the Share The Road Quiz DuPage County Bike Maps Kane County Bike Maps League of Illinois Bicyclists State of Illinois Regional Bike Maps Rules and regulations: Fermilab traffic rules (FESHM 9010) Fermilab Today article on traffic safety on site, March 1, 2010 Illinois Rules of the Road Illinois ban of cell phone use while driving in school and construction zones (Illinois House Bill 72, passed August 6, 2009): Traffic safety: Illinois traffic safety publications Studies on distracted driving and cell-phone use while driving: http://www.nsc.org/safety_road/Distracted_Driving/Pages/distracted_driving.aspx

113

Mobile Traffic Management System Test Deployment  

E-Print Network (OSTI)

operation in the Mobile TMC and video transmission to the District 12 TMC and difficulty with the wirelessoperation. The modified trailer was now capable of providing traffic data and video via wireless

Gerfen, Jeffrey Brian

2005-01-01T23:59:59.000Z

114

Uniform insulation applied-B ion diode  

DOE Patents (OSTI)

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, and ions may be focused at a point on the z axis.

Seidel, D.B.; Slutz, S.A.

1986-04-11T23:59:59.000Z

115

Uniform insulation applied-B ion diode  

DOE Patents (OSTI)

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.

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

1988-01-01T23:59:59.000Z

116

Brachistochrone of a Spherical Uniform Mass Distribution  

E-Print Network (OSTI)

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.

David R. Mitchell

2006-11-21T23:59:59.000Z

117

Some exact solutions to the Lighthill Whitham Richards Payne traffic flow equations  

E-Print Network (OSTI)

We find a class of exact solutions to the Lighthill Whitham Richards Payne (LWRP) traffic flow equations. Using two consecutive lagrangian transformations, a linearization is achieved. Next, depending on the initial density, we either apply (again two) Lambert functions and obtain exact formulas for the dependence of the car density and velocity on x and t, or else, failing that, the same result in a parametric representation. The calculation always involves two possible factorizations of a consistency condition. Both must be considered. In physical terms, the lineup usually separates into two offshoots at different velocities. Each velocity soon becomes uniform. This outcome in many ways resembles the two soliton solution to the Korteweg-de Vries equation. We check general conservation requirements. Although traffic flow research has developed tremendously since LWRP, this calculation, being exact, may open the door to solving similar problems, such as gas dynamics or water flow in rivers. With this possibil...

Rowlands, G; Skorupski, A A

2013-01-01T23:59:59.000Z

118

Enhanced SMART Signal system provides real-time traffic data to road users and traffic engineers  

E-Print Network (OSTI)

are looking for new ways to monitor and manage local traffic signal systems. Despite this growing need mobility: measuring accessibility in U.S. cities Every year, Americans face a steady stream of discouraging these reports focus almost exclusively on traffic mobility--how quickly travelers can move between any two

Minnesota, University of

119

Control Strategies For Transit Priority  

E-Print Network (OSTI)

Light Rail Transit," Transportation Research Record, No.Rail Signal Control Strategies by Combining Transit and Traffic Simulation Models," Transportation Research

Skabardonis, Alexander

1998-01-01T23:59:59.000Z

120

Land Division: Uniform Environmental Covenants Program (Alabama) |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Land Division: Uniform Environmental Covenants Program (Alabama) Land Division: Uniform Environmental Covenants Program (Alabama) Land Division: Uniform Environmental Covenants Program (Alabama) < Back Eligibility Agricultural Commercial Construction Fed. Government Industrial Local Government Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State Alabama Program Type Environmental Regulations These regulations apply to environmental covenants arising from environmental response projects conducted under any of the following Alabama Department of Environmental Management programs: Scrap tire remediation sites, Soil and groundwater remediation sites, Leaking storage tank remediation sites, Solid waste disposal sites, Hazardous waste

Note: This page contains sample records for the topic "uniform traffic control" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Real-time network traffic prediction based on a multiscale decomposition  

Science Conference Proceedings (OSTI)

The presence of the complex scaling behavior in network traffic makes accurate forecasting of the traffic a challenging task. In this paper we propose a multiscale decomposition approach to real time traffic prediction. The raw traffic data is first ...

Guoqiang Mao

2005-04-01T23:59:59.000Z

122

Safe and Efficient Traffic Flow for Aluminum Smelters  

Science Conference Proceedings (OSTI)

Abstract Scope, Aluminum smelter design, construction and operation requires: ... and traffic scheduling for vehicles and pedestrians throughout the Smelter.

123

Responses of wintering humpback whales to vessel traffic  

Science Conference Proceedings (OSTI)

Responses of humpback whales to vessel traffic were monitored over two winter seasons during 1983–1984 in Maui

Gordon B. Bauer; Joseph R. Mobley; Louis M. Herman

1993-01-01T23:59:59.000Z

124

Efficient network QoS provisioning based on per node traffic shaping  

Science Conference Proceedings (OSTI)

Keywords: ATM, QoS provisioning, end-to-end delay guarantees, real-time traffic, scheduling, traffic shaping

Leonidas Georgiadis; Roch Guérin; Vinod Peris; Kumar N. Sivarajan

1996-08-01T23:59:59.000Z

125

Using GSM technologies to collect and supply expressway traffic information  

Science Conference Proceedings (OSTI)

Traffic information collecting and distribution are necessary in intelligent transportation systems, which require two-way communications for cars to transmit and receive traffic information. The GSM network has an LCS function, and cell phones using ... Keywords: GSM, ITS, expressway, traffic

Junqiang Guo; Fasheng Liu; Chengjiang Li; Zhiqiang Zhu

2009-09-01T23:59:59.000Z

126

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

E-Print Network (OSTI)

November 2010 Keywords: Gasoline prices Traffic crashes Traffic safety Age Gender Race Problem: Limited-grade unleaded gasoline price data from the Energy Information Administration of the U.S. Department of Energy were used to investigate the effects of gasoline prices on traffic safety by age, gender, and race

Levinson, David M.

127

A compressive sensing-based reconstruction approach to network traffic  

Science Conference Proceedings (OSTI)

Traffic matrix in a network describes the end-to-end network traffic which embodies the network-level status of communication networks from origin to destination nodes. It is an important input parameter of network traffic engineering and is very crucial ...

Laisen Nie, Dingde Jiang, Zhengzheng Xu

2013-07-01T23:59:59.000Z

128

Traffic and Transportation Committee October 5, 2009  

E-Print Network (OSTI)

Traffic and Transportation Committee October 5, 2009 1:30 pm ­ Room 645 (6th Floor) Rice Park Construction project ­ Bob Sperling, Salt Lake City 4. Alternative Transportation update ­ Alma of session. 7. Announcements and/or new items for discussion. 8. Discussion regarding future meeting schedule

Capecchi, Mario R.

129

Bottleneck analysis and traffic congestion avoidance  

Science Conference Proceedings (OSTI)

With the help of software such as packet sniffer one can easily intercept or capture the network packets that travel across the network. The sniffer captures these packets by setting the NIC card in the promiscuous mode and eventually decodes them and ... Keywords: NIC, libpcap, network analyzer, network monitoring, packet capture, packet sniffer, promiscuous mode, traffic analysis

M. A. Qadeer; A. H. Khan; A. A. Habeeb; M. A. Hafeez

2010-02-01T23:59:59.000Z

130

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

Science Conference Proceedings (OSTI)

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.

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

131

An integrated mobility and traffic model for resource allocation in wireless networks  

Science Conference Proceedings (OSTI)

In a wireless communications network, the movement of mobile users presents significant technical challenges to providing efficient access to the wired broadband network. In this paper, we construct a new analytical/numerical model that characterizes ... Keywords: admission control, mobility, resource allocation, traffic modeling, wireless networks

Hisashi Kobayashi; Shun-Zheng Yu; Brian L. Mark

2000-08-01T23:59:59.000Z

132

Virtual Queue Based Distributed Data Traffic Scheduling for Cyber Physical Systems with Application in Smart Grid  

Science Conference Proceedings (OSTI)

Communication is needed in cyber physical system (CPS) to convey information from sensors to controllers. In this paper, a wireless network is considered to serve as the communication infrastructure in CPS. The data traffic scheduling problem is studied ... Keywords: Kalman filtering, cyber physical system, scheduling

Husheng Li

2012-06-01T23:59:59.000Z

133

Design and performance evaluation of a fuzzy based traffic conditioner for differentiated services  

Science Conference Proceedings (OSTI)

The current Internet can only provide the best-effort services. By growing the Internet and its applications, new services with different requirements are developed. The differentiated services (Diffserv) [S. Blake, M. Carlson, E. Davies, Z. Wang, W. ... Keywords: Differentiated services (Diffserv), Fuzzy logic controller (FLC), Quality of service (QoS), Scheduling mechanisms, Traffic metering

Mohammad Hossien Yaghmaee; Mohammad Bagher Menhaj; Hale Amintoosi

2005-04-01T23:59:59.000Z

134

WebTrafMon: Web-based Internet/Intranet network traffic monitoring and analysis system  

Science Conference Proceedings (OSTI)

As enterprise computing environments become more network-oriented, the importance of network traffic monitoring and analysis intensifies. Most existing traffic monitoring and analysis tools focus on measuring the traffic loads of individual network segments. ... Keywords: Enterprise network management, Network traffic monitoring and analysis, Traffic management, Traffic type and source analysis, Web-based management

J. W. -K Hong; S.-S Kwon; J.-Y Kim

1999-09-01T23:59:59.000Z

135

FHWA Traffic Volume Trend Monthly VMT Report - October 2011 | Data.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

October 2011 October 2011 Research Menu Data/Tools Apps Resources Let's Talk Research Alpha You are here Data.gov » Communities » Research » Data FHWA Traffic Volume Trend Monthly VMT Report - October 2011 Dataset Summary Description The Traffic Volume Trends montly report is a natinal data report that provides quality controlled vehicle miles traveled data for each State for all roadways Tags {"volume data",tvt,"traffic volume trends",'fhwa,AADT,VMT,"Vehicle Miles Traveled"} Dataset Ratings Overall 0 No votes yet Data Utility 0 No votes yet Usefulness 0 No votes yet Ease of Access 0 No votes yet Dataset Additional Information Last Updated 02/01/2012 Publisher Federal Highway Administration, Department of Transportation Contact Name Contact Email daniel.jenkins@dot.gov

136

FHWA Traffic Volume Trend Monthly VMT Report - September 2011 | Data.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

September 2011 September 2011 Research Menu Data/Tools Apps Resources Let's Talk Research Alpha You are here Data.gov » Communities » Research » Data FHWA Traffic Volume Trend Monthly VMT Report - September 2011 Dataset Summary Description The Traffic Volume Trends montly report is a natinal data report that provides quality controlled vehicle miles traveled data for each State for all roadways Tags {"volume data",tvt,"traffic volume trends",'fhwa,AADT,VMT,"Vehicle Miles Traveled"} Dataset Ratings Overall 0 No votes yet Data Utility 0 No votes yet Usefulness 0 No votes yet Ease of Access 0 No votes yet Dataset Additional Information Last Updated 02/01/2012 Publisher Federal Highway Administration, Department of Transportation Contact Name Contact Email daniel.jenkins@dot.gov

137

FHWA Traffic Volume Trend Monthly VMT Report - June 2011 | Data.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

June 2011 June 2011 Research Menu Data/Tools Apps Resources Let's Talk Research Alpha You are here Data.gov » Communities » Research » Data FHWA Traffic Volume Trend Monthly VMT Report - June 2011 Dataset Summary Description The Traffic Volume Trends montly report is a natinal data report that provides quality controlled vehicle miles traveled data for each State for all roadways Tags {"volume data",tvt,"traffic volume trends",'fhwa,AADT,VMT,"Vehicle Miles Traveled"} Dataset Ratings Overall 0 No votes yet Data Utility 0 No votes yet Usefulness 0 No votes yet Ease of Access 0 No votes yet Dataset Additional Information Last Updated 02/01/2012 Publisher Federal Highway Administration, Department of Transportation Contact Name Contact Email daniel.jenkins@dot.gov

138

FHWA Traffic Volume Trend Monthly VMT Report - September 2010 | Data.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

September 2010 September 2010 Research Menu Data/Tools Apps Resources Let's Talk Research Alpha You are here Data.gov » Communities » Research » Data FHWA Traffic Volume Trend Monthly VMT Report - September 2010 Dataset Summary Description The Traffic Volume Trends montly report is a natinal data report that provides quality controlled vehicle miles traveled data for each State for all roadways Tags {"volume data",tvt,"traffic volume trends",'fhwa,AADT,VMT,"Vehicle Miles Traveled"} Dataset Ratings Overall 0 No votes yet Data Utility 0 No votes yet Usefulness 0 No votes yet Ease of Access 0 No votes yet Dataset Additional Information Last Updated 02/01/2012 Publisher Federal Highway Administration, Department of Transportation Contact Name Contact Email daniel.jenkins@dot.gov

139

FHWA Traffic Volume Trend Monthly VMT Report - October 2010 | Data.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

October 2010 October 2010 Research Menu Data/Tools Apps Resources Let's Talk Research Alpha You are here Data.gov » Communities » Research » Data FHWA Traffic Volume Trend Monthly VMT Report - October 2010 Dataset Summary Description The Traffic Volume Trends montly report is a natinal data report that provides quality controlled vehicle miles traveled data for each State for all roadways Tags {"volume data",tvt,"traffic volume trends",'fhwa,AADT,VMT,"Vehicle Miles Traveled"} Dataset Ratings Overall 0 No votes yet Data Utility 0 No votes yet Usefulness 0 No votes yet Ease of Access 0 No votes yet Dataset Additional Information Last Updated 02/01/2012 Publisher Federal Highway Administration, Department of Transportation Contact Name Contact Email daniel.jenkins@dot.gov

140

FHWA Traffic Volume Trend Monthly VMT Report - June 2010 | Data.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

June 2010 June 2010 Research Menu Data/Tools Apps Resources Let's Talk Research Alpha You are here Data.gov » Communities » Research » Data FHWA Traffic Volume Trend Monthly VMT Report - June 2010 Dataset Summary Description The Traffic Volume Trends montly report is a natinal data report that provides quality controlled vehicle miles traveled data for each State for all roadways Tags {"volume data",tvt,"traffic volume trends",'fhwa,AADT,VMT,"Vehicle Miles Traveled"} Dataset Ratings Overall 0 No votes yet Data Utility 0 No votes yet Usefulness 0 No votes yet Ease of Access 0 No votes yet Dataset Additional Information Last Updated 02/01/2012 Publisher Federal Highway Administration, Department of Transportation Contact Name Contact Email daniel.jenkins@dot.gov

Note: This page contains sample records for the topic "uniform traffic control" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Uniform Transboundary Pollution Reciprocal Access Act (Montana) |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Uniform Transboundary Pollution Reciprocal Access Act (Montana) Uniform Transboundary Pollution Reciprocal Access Act (Montana) Uniform Transboundary Pollution Reciprocal Access Act (Montana) < Back Eligibility Utility Fed. Government Commercial Agricultural Investor-Owned Utility State/Provincial Govt Industrial Construction Municipal/Public Utility Local Government Installer/Contractor Rural Electric Cooperative Tribal Government Institutional Fuel Distributor Transportation Program Info State Montana Program Type Environmental Regulations This Act allows any entity in a Reciprocating Jurisdiction harmed by pollution originating in the state of Montana to bring an action or other proceeding against the source of that pollution in the state of Montana. Such an entity has the same rights in the state of Montana as they would if

142

UNIFORM PATENT POLICY FOR RIGHTS IN INVENTIONS MADE BY GOVERNMENT...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

UNIFORM PATENT POLICY FOR RIGHTS IN INVENTIONS MADE BY GOVERNMENT EMPLOYEES UNIFORM PATENT POLICY FOR RIGHTS IN INVENTIONS MADE BY GOVERNMENT EMPLOYEES The purpose of this part is...

143

LED Traffic Lights Get Buy American Stamp | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

LED Traffic Lights Get Buy American Stamp LED Traffic Lights Get Buy American Stamp LED Traffic Lights Get Buy American Stamp November 29, 2010 - 10:00am Addthis LED traffic lights are assembled at Dialight’s factory in Roxboro, N.C. The company has expanded production at the facility, adding more than 100 jobs over the past two years. | Photo Courtesy of Dialight LED traffic lights are assembled at Dialight's factory in Roxboro, N.C. The company has expanded production at the facility, adding more than 100 jobs over the past two years. | Photo Courtesy of Dialight Lindsay Gsell LED traffic lights are assembled at Dialight's factory in Roxboro, N.C. The company has expanded production at the facility, adding more than 100 jobs over the past two years. Red. Yellow. Green. What LED traffic signals don't say: Made in USA.

144

Uniform-distribution attribute noise learnability  

Science Conference Proceedings (OSTI)

We study the problem of PAC-learning Boolean functions with random attribute noise under the uniform distribution. We define a noisy distance measure for function classes and show that if this measure is small for a class C and an attribute ... Keywords: Fourier analysis, computational learning theory, learning with noise

Nader H. Bshouty; Jeffrey C. Jackson; Christino Tamon

2003-12-01T23:59:59.000Z

145

MODERATOR ELEMENTS FOR UNIFORM POWER NUCLEAR REACTOR  

DOE Patents (OSTI)

This patent describes a method of obtaining a flatter flux and more uniform power generation across the core of a nuclear reactor. The method comprises using moderator elements having differing moderating strength. The elements have an increasing amount of the better moderating material as a function of radial and/or axial distance from the reactor core center. (AEC)

Balent, R.

1963-03-12T23:59:59.000Z

146

Non-uniform Subdivision for B-splines of Arbitrary Degree. Computer Aided Geometric DesignTo appear  

E-Print Network (OSTI)

We present an efficient algorithm for subdividing non-uniform B-splines of arbitrary degree in a manner similar to the Lane-Riesenfeld subdivision algorithm for uniform Bsplines of arbitrary degree. Our algorithm consists of doubling the control points followed by d rounds of non-uniform averaging similar to the d rounds of uniform averaging in the Lane-Riesenfeld algorithm for uniform B-splines of degree d. However, unlike the Lane-Riesenfeld algorithm which follows most directly from the continuous convolution formula for the uniform B-spline basis functions, our algorithm follows naturally from blossoming. We show that our knot insertion method is simpler and more efficient than previous knot insertion algorithms for non-uniform B-splines. 1.

S. Schaefer; R. Goldman

2008-01-01T23:59:59.000Z

147

The Physics of Traffic and Regional Development  

E-Print Network (OSTI)

This contribution summarizes and explains various principles from physics which are used for the simulation of traffic flows in large street networks, the modeling of destination, transport mode, and route choice, or the simulation of urban growth and regional development. The methods stem from many-particle physics, from kinetic gas theory, or fluiddynamics. They involve energy and entropy considerations, transfer the law of gravity, apply cellular automata and require methods from evolutionary game theory. In this way, one can determine interaction forces among driver-vehicle units, reproduce breakdowns of traffic including features of synchronized congested flow, or understand changing usage patterns of alternative roads. One can also describe daily activity patterns based on decision models, simulate migration streams, and model urban growth as a particular kind of aggregation process.

Helbing, Dirk

2013-01-01T23:59:59.000Z

148

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

SciTech Connect

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%.

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

2010-03-26T23:59:59.000Z

149

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

DOE Patents (OSTI)

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.

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

2008-01-08T23:59:59.000Z

150

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

SciTech Connect

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.

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

2011-02-01T23:59:59.000Z

151

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

SciTech Connect

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.

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

152

Florida County Seeks to Reduce Emissions and Improve Traffic | Department  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Florida County Seeks to Reduce Emissions and Improve Traffic Florida County Seeks to Reduce Emissions and Improve Traffic Florida County Seeks to Reduce Emissions and Improve Traffic September 27, 2010 - 10:30am Addthis A worker synchronizes a traffic light on State Road A1A in St. Augustine, FL. | Energy Department Photo | A worker synchronizes a traffic light on State Road A1A in St. Augustine, FL. | Energy Department Photo | Lindsay Gsell What does this project do? St. Johns County, Florida uses Recovery Act funding to resynchronize 23 traffic signals at five major segments of roadway. The new light patterns will save nearly 729,000 gallons of gas and reduce CO2 emissions by more than 2,200 metric tons. The intersection of State Road A1A and State Road 312 in St. Augustine is messy at 5 o'clock. On one side, tourists returning from Florida's

153

Streamlining Transportation Corridor Planning Processess: Freight and Traffic Information  

SciTech Connect

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.

Franzese, Oscar [ORNL

2010-08-01T23:59:59.000Z

154

Application and numerical investigation of wavelet transform for traffic data denoising  

Science Conference Proceedings (OSTI)

Good fitting of traffic data is important to traffic study because initial and boundary conditions of dynamic traffic models and relationships among traffic variables are dependent on the calibration of data. In this paper, a denoising method of traffic ... Keywords: data preprocessing, daubechies wavelets, denoise, speed-density relation, wavelet transform

Shih-Ching Lo; Chih-Ku Fan

2004-04-01T23:59:59.000Z

155

RENETO, a realistic network traffic generator for OMNeT++/INET  

Science Conference Proceedings (OSTI)

We present in this paper RENETO, a packet-level traffic generator for OMNeT++/INET. In order to achieve realistic traffic behavior, a first tool computes a model by doing an automatic analysis of a real traffic capture. This analysis extracts statistical ... Keywords: network traffic generation, network traffic modeling, pseudo-random number generation

Fabien Geyer, Stefan Schneele, Georg Carle

2013-03-01T23:59:59.000Z

156

Multi-hour network planning based on domination between sets of traffic matrices  

Science Conference Proceedings (OSTI)

In multi-hour network design, periodic traffic variations along time are considered in the dimensioning process. Then, the non coincidence of traffic peaks along the day or the week can be exploited. This paper investigates the application of the traffic ... Keywords: Multi-hour traffic, Network planning, Traffic domination

P. Pavon-Marino; B. Garcia-Manrubia; R. Aparicio-Pardo

2011-02-01T23:59:59.000Z

157

Avista Utilities - LED Traffic Signal Incentive Program (Washington...  

Open Energy Info (EERE)

with form History Share this page on Facebook icon Twitter icon Avista Utilities - LED Traffic Signal Incentive Program (Washington) This is the approved revision of this...

158

V-201: Cisco Intrusion Prevention System SSP Fragmented Traffic...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

of the code that processes fragmented traffic could allow an unauthenticated, remote attacker to cause the Analysis Engine process to become unresponsive or cause the...

159

Problem Sets: Fundamentals Of Transportation And Traffic Operations  

E-Print Network (OSTI)

P ROBLEM S ETS : Fundamentals of Transportation and TrafficCN-98-1 February, 1998 Fundamentals of Transportation andcomprise a supplement to Fundamentals of Transportation and

Daganzo, Carlos F.

1998-01-01T23:59:59.000Z

160

Avista Utilities - LED Traffic Signal Incentive Program (Idaho...  

Open Energy Info (EERE)

LED Traffic Signal Incentive Program offers a variety of incentives based on annual energy savings for customer LED retrofits. Avista's website has an incentive table that...

Note: This page contains sample records for the topic "uniform traffic control" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Analysis of Traffic Scheduling Technique for Smart Grid Mesh ...  

Science Conference Proceedings (OSTI)

Analysis of Traffic Scheduling Technique for Smart Grid Mesh Networks ... In this paper, we present a multi-gate mesh network architecture that has ...

2012-01-03T23:59:59.000Z

162

Heavy Traffic Analysis for EDF Queues with  

E-Print Network (OSTI)

This paper presents a heavy-traffic analysis of the behavior of a single-server queue under an Earliest-Deadline-First (EDF) scheduling policy, in which customers have deadlines and are served only until their deadlines elapse. The performance of the system is measured by the fraction of reneged work (the residual work lost due to elapsed deadlines), which is shown to be minimized by the EDF policy. The evolution of the lead time distribution of customers in queue is described by a measure-valued process. The heavy traffic limit of this (properly scaled) process is shown to be a deterministic function of the limit of the scaled workload process, which, in turn, is identified to be a doubly reflected Brownian motion. This paper complements previous work by Doytchinov, Lehoczky and Shreve on the EDF discipline, in which customers are served to completion even after their deadlines elapse. The fraction of reneged work in a heavily loaded system and the fraction of late work in the corresponding system without reneging are compared using explicit formulas based on the heavy

John Lehoczky; Kavita Ramanan; Steven Shreve

2007-01-01T23:59:59.000Z

163

A new algorithm for sampling CSP solutions uniformly at random  

Science Conference Proceedings (OSTI)

The paper presents a method for generating solutions of a constraint satisfaction problem (CSP) uniformly at random. Our method relies on expressing the constraint network as a uniform probability distribution over its solutions and then sampling from ...

Vibhav Gogate; Rina Dechter

2006-09-01T23:59:59.000Z

164

LED traffic signals: A market transformation opportunity assessment  

SciTech Connect

This report examines the feasibility and appropriateness of market intervention strategies to increase the penetration of LED traffic signals, which offer large energy savings and other benefits relative to existing incandescent traffic signals. It presents the state of the technology and some of the technical challenges that remain. Prepared for the Consortium for Energy Efficiency.

Suozzo, M.

1998-12-31T23:59:59.000Z

165

Variable selection and ranking for analyzing automobile traffic accident data  

Science Conference Proceedings (OSTI)

Variable ranking and feature selection are important concepts in data mining and machine learning. This paper introduces a new variable ranking technique named Sum Max Gain Ratio (SMGR). The new technique is evaluated within the domain of traffic accident ... Keywords: decision tree, traffic accident data, variable and feature selection, variable ranking

Huanjing Wang; Allen Parrish; Randy K. Smith; Susan Vrbsky

2005-03-01T23:59:59.000Z

166

A traffic shaping optimization methodology for web systems  

Science Conference Proceedings (OSTI)

In recent years, computer networks have been characterized by heterogeneous traffic and dynamic management of different kinds of services. The web and network requirements have increased within time and, since bandwidth is limited, it becomes necessary ... Keywords: QoS, internet services, optimization, traffic shaping, world wide web

Caio Mesquita, Ulisses Cavalca, Adriano C.M. Pereira, Eduardo G. Carrano

2013-11-01T23:59:59.000Z

167

Traffic modeling of player action categories in a MMORPG  

Science Conference Proceedings (OSTI)

In this paper we present a user action specific modeling of network traffic in a Massively Multiplayer Online Role-Playing Game (MMORPG). We have performed measurements for each of the previously defined action categories for MMORPGs (Trading, Questing, ... Keywords: MMORPG, World of Warcraft, modeling, traffic

Mirko Suznjevic; Ivana Stupar; Maja Matijasevic

2011-03-01T23:59:59.000Z

168

Traffic Flow Measurement: Experiences with NeTraMet  

Science Conference Proceedings (OSTI)

This memo records experiences in implementing and using the Traffic Flow Measurement Architecture and Meter MIB. It discusses the implementation of NeTraMet (a traffic meter) and NeMaC (a combined manager and meter reader), considers the writing of ...

N. Brownlee

1997-03-01T23:59:59.000Z

169

LIGHT EMITTING DIODE (LED) TRAFFIC SIGNAL SURVEY RESULTS  

E-Print Network (OSTI)

CALIFORNIA ENERGY COMMISSION LIGHT EMITTING DIODE (LED) TRAFFIC SIGNAL SURVEY RESULTS STAFFREPORT: Assistance needs 26 Item 12: Information requested 28 Appendix A: Light Emitting Diode (LED) Traffic Signal efficiency upgrades. - 29 - #12;APPENDIX A - 30 - #12;California Energy Commission Light Emitting Diode (LED

170

Wireless mesh network security: A traffic engineering management approach  

Science Conference Proceedings (OSTI)

The wireless mesh network (WMN) is an emerging multihop, heterogeneous, easily scalable and low cost network. The architecture of the WMN is a connectionless-oriented, mobile and dynamic traffic of routed packets. The mesh infrastructure environment ... Keywords: IPSec, MPLS, Security, Traffic engineering, VPN, Wireless mesh networks

Okechukwu E. Muogilim; Kok-Keong Loo; Richard Comley

2011-03-01T23:59:59.000Z

171

Ad Hoc mobility management with uniform quorum systems  

Science Conference Proceedings (OSTI)

Keywords: Ad hoc network, balanced incomplete block design, data distribution, mobility management, quorum system, reconfigurable wireless network, uniform quorum system

Zygmunt J. Haas; Ben Liang

1999-04-01T23:59:59.000Z

172

Uniform, Shape-Specific Carriers for Vaccines, Biologics and ...  

Science Conference Proceedings (OSTI)

Uniform, Shape-Specific Carriers for Vaccines, Biologics and Small Molecule Drugs: Top-down Nano-fabrication Technologies. ...

2010-10-05T23:59:59.000Z

173

Handbook 130 (2013)- Uniform Laws and Regulations in the ...  

Science Conference Proceedings (OSTI)

Page 1. UNIFORM LAWS AND REGULATIONS IN THE AREAS OF LEGAL METROLOGY AND ENGINE FUEL QUALITY NIST Handbook 2013 130 ...

2012-11-02T23:59:59.000Z

174

Uniform System of Accounts for Gas Utilities (Maine)  

Energy.gov (U.S. Department of Energy (DOE))

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

175

Uniform Realization of the Unit of Torque in the US  

Science Conference Proceedings (OSTI)

Uniform Realization of the Unit of Torque in the US. Summary: ... Start Date: February 1, 2008. Lead Organizational Unit: pml. ...

2012-05-30T23:59:59.000Z

176

Ohio Town Installing 'Green' Traffic Signals | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ohio Town Installing 'Green' Traffic Signals Ohio Town Installing 'Green' Traffic Signals Ohio Town Installing 'Green' Traffic Signals January 20, 2010 - 3:57pm Addthis Elyria, Ohio, is getting a little greener. Mayor William M. Grace recently confirmed that staff will replace traditional traffic lights with 288 energy-efficient LEDs (light-emitting diodes), saving the town energy and money. "We are definitely doing this, we are going to switch out all the traffic lights in town," Elyria's mayor says. Replacing light bulbs with LEDs will mean substantial savings. That's because these small, solid bulbs can last up to 10 times longer than traditional lights and require considerably less energy. "This gives us the opportunity to change, we expect to realize considerable savings," the mayor says.

177

Self-organizing traffic lights at multiple-street intersections  

E-Print Network (OSTI)

Summary: Traffic light coordination is a complex problem. In this paper, we extend previous work on an abstract model of city traffic to allow for multiple street intersections. We test a self-organizing method in our model, showing that it is close to theoretical optima and superior to a traditional method of traffic light coordination. Abstract: The elementary cellular automaton following rule 184 can mimic particles flowing in one direction at a constant speed. This automaton can therefore model highway traffic. In a recent paper, we have incorporated intersections regulated by traffic lights to this model using exclusively elementary cellular automata. In such a paper, however, we only explored a rectangular grid. We now extend our model to more complex scenarios employing an hexagonal grid. This extension shows first that our model can readily incorporate multiple-way intersections and hence simulate complex scenarios. In addition, the current extension allows us to study and evaluate the behavior of two...

Gershenson, Carlos

2011-01-01T23:59:59.000Z

178

Traffic Safety Among Latino Populations in California: Current Status and Policy Recommendations  

E-Print Network (OSTI)

the insufficient number of street lights and stop signs tostreet without paying any attention to the traffic lightsstreet without paying any attention to the traffic lights

Cooper, Jill F; Wilder, Tammy R; Lankina, Elena; Geyer, Judy A; Ragland, David R

2005-01-01T23:59:59.000Z

179

Wavelength routing of uniform instances in all-optical rings  

Science Conference Proceedings (OSTI)

We consider the problem of routing uniform communication instances in switched optical rings that use wavelength-division multiplexing technology. A communication instance is called uniform if it consists exactly of all pairs of nodes in the graph whose ... Keywords: Edge load, Optical ring, Routing, Uniform instance, WDM, Wavelength index

Lata Narayanan; Jaroslav Opatrny

2005-12-01T23:59:59.000Z

180

Uniformly accelerated observer in a thermal bath  

E-Print Network (OSTI)

We investigate the quantum field aspects in flat spacetime for an uniformly accelerated observer moving in a thermal bath. In particular, we obtain an exact closed expression of the reduced density matrix for an uniformly accelerated observer with acceleration $a = 2\\pi T$ when the state of the quantum field is a thermal bath at temperature $T^\\prime$. We find that the density matrix has a simple form with an effective partition function $Z$ being a product, $Z = Z_T Z_{T^\\prime}$, of two thermal partition functions corresponding to temperatures $T$ and $T^\\prime$ and hence is not thermal, even when $T = T^\\prime$. We show that, even though the partition function has a product structure, the two thermal baths are, in fact, interacting systems; although in the high frequency limit $\\omega_k \\gg T$ and $\\omega_k \\gg T^\\prime$, the interactions are found to become sub-dominant. We further demonstrate that the resulting spectrum of the Rindler particles can be interpreted in terms of spontaneous and stimulated emission due to the background thermal bath. The density matrix is also found to be symmetric in the acceleration temperature $T$ and the thermal bath temperature $T^\\prime$ indicating that thermodynamic experiments alone cannot distinguish between the thermal effects due to $T$ and those due to $T^\\prime$. The entanglement entropy associated with the reduced density matrix (with the background contribution of the Davies-Unruh bath removed) is shown to satisfy, in the $\\omega_k \\gg T^\\prime$ limit, a first law of thermodynamics relation of the form $T \\delta S = \\delta E$ where $\\delta E$ is the difference in the energies corresponding to the reduced density matrix and the background Davies-Unruh bath. The implications are discussed.

Sanved Kolekar

2013-09-12T23:59:59.000Z

Note: This page contains sample records for the topic "uniform traffic control" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Beating the traffic with commuting alternatives  

Science Conference Proceedings (OSTI)

This pamphlet describes how, by encouraging commuting options, local governments can help reduce air pollution, fuel consumption, and traffic congestion. Minimizing these problems makes the community more appealing to businesses, residents, and visitors and boosts the local economy. Approaches to alternative transportation are as varied as the communities devising and using them. But the critical factor is initiative from local governments, often one of communities largest employers. They can use and promote commuting alternatives among their employees. Local governments can also promote alternative transportation among other employers and the general public. They can provide information on commuting options, improve the infrastructure, and use local authority to require and reward those changes necessary to make alternative transportation a widely accepted part of community life. Best of all, local governments can lead by example and establish a template for other employers to follow.

NONE

1995-05-01T23:59:59.000Z

182

The Generalized Combination Method for Area Traffic Control  

E-Print Network (OSTI)

A procedure is described for determining optimal signal settings in a network including cycle time, splits of green time and ffsets. A number of cycle times are scanned in the process. For each cycle, splits are determined ...

Gartner, Nathan H.

183

Formally Verified Rapid Prototyping for Air Traffic Control  

E-Print Network (OSTI)

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

Sage, M.; Johnson, C.W.

184

Potential use of artificial intelligence techniques in air traffic control  

E-Print Network (OSTI)

A.I., or Artificial Intelligence, is a vast field that includes more than the so-called "Expert Systems" that the public seems to identify with A.I. In particular, research in A.I. has created an entirely new mode of ...

Elias, Antonio L.

1985-01-01T23:59:59.000Z

185

Geometry features measurement of traffic accident for reconstruction based on close-range photogrammetry  

Science Conference Proceedings (OSTI)

This paper studies the feasibility of investigating a traffic accident and offering initial data for traffic accident reconstruction (TAR) using a photogrammetric technique. Compared with the conventional roller tape applied by the traffic police of ... Keywords: Accident reconstruction, Close-range photogrammetry, Direct linear transformation, Traffic accident scene, Vehicle deformation

Xinguang Du; Xianlong Jin; Xiaoyun Zhang; Jie Shen; Xinyi Hou

2009-07-01T23:59:59.000Z

186

TRANSPORTATION AND TRAFFIC MANAGEMENT QUALIFICATION STANDARD REFERENCE GUIDE  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Transportation Transportation & Traffic Management Qualification Standard Reference Guide APRIL 2010 This page is intentionally blank. i LIST OF FIGURES ...................................................................................................................... ii LIST OF TABLES ........................................................................................................................ ii ACRONYMS ................................................................................................................................ iv PURPOSE...................................................................................................................................... 1 SCOPE ...........................................................................................................................................

187

LED Traffic Lights Get Buy American Stamp | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

LED Traffic Lights Get Buy American Stamp LED Traffic Lights Get Buy American Stamp LED Traffic Lights Get Buy American Stamp November 30, 2010 - 10:19am Addthis Red. Yellow. Green. What LED traffic signals don't say: Made in USA. That is changing. Dialight Corporation, an LED lighting manufacturer with U.S. corporate offices in Farmingdale, New Jersey, and a parent company based in the U.K., invested nearly $3 million into renovating their 75,000-square-foot production facility in Roxboro, North Carolina. With these improvements, Dialight's Roxboro plant is projected to scale up production by 400 percent. "Bringing manufacturing back to America is a win-win scenario," said Roy Burton, Dialight's Group Chief Executive. "We're helping the economy by creating new jobs, and at the same time we're finding it more

188

Improving the interaction between overlay routing and traffic engineering  

Science Conference Proceedings (OSTI)

Overlay routing has been successful as an incremental method to improve Internet routing by allowing its own users to select their logical routing. In the meantime, traffic engineering (TE) are being used to reduce the whole network cost by adapting ...

Gene Moo Lee; Taehwan Choi

2008-05-01T23:59:59.000Z

189

Decentralized Traffic Management Strategies for Sensor-Enabled Cars  

E-Print Network (OSTI)

Traffic Congestions and accidents are major concerns in today's transportation systems. This thesis investigates how to optimize traffic flow on highways, in particular for merging situations such as intersections where a ramp leads onto the highway. In our work, cars are equipped with sensors that can detect distance to neighboring cars, and communicate their velocity and acceleration readings with one another. Sensor-enabled cars can locally exchange sensed information about the traffic and adapt their behavior much earlier than regular cars. We propose proactive algorithms for merging different streams of sensor-enabled cars into a single stream. A proactive merging algorithm decouples the decision point from the actual merging point. Sensor-enabled cars allow us to decide where and when a car merges before it arrives at the actual merging point. This leads to a significant improvement in traffic flow as velocities can be adjusted appropriately. We compare proactive merging algorithms against the conventio...

Wang, Ziyuan; Ramamohanarao, Kotagiri

2009-01-01T23:59:59.000Z

190

Concept development and evaluation of airborne traffic displays  

E-Print Network (OSTI)

A system concept for a cockpit traffic situation display (TSD) was developed and a preliminary evaluation was undertaken to investigate the effect of a TSD on safety, efficiency, and capacity in the 3rd generation NAS/ARTS ...

Imrich, Thomas

1971-01-01T23:59:59.000Z

191

On the Convergence of Multiclass Queueing Networks in Heavy Traffic  

E-Print Network (OSTI)

The subject of this paper is the heavy traffic behavior of a general class of queueing networks with first-in-first-out (FIFO) service discipline. For special cases which require various assumptions on the network structure, ...

Dai, I. G.

192

Polymer delineation system. [Patent application: traffic lane lines  

DOE Patents (OSTI)

A delineation system (traffic lane lines) for highways is described in which polymerizable substances are applied to existing or newly prepared highway pavements. The substances would contain a suitable pigment and may incorporate reflective elements.

Woolman, S.; Steinberg, M.

1975-06-24T23:59:59.000Z

193

Uniform plasma oscillations in ellipsoid of conductive material  

E-Print Network (OSTI)

The influence of the shape of a sample on the type of uniform dipole collective electrons oscillations is discussed. In samples of a bulk shape uniform bulk dipole oscillation (Langmuir oscillation) cannot exist. It exists in samples of a thin slab shape only. As uniform bulk dipole oscillations cannot penetrate ellipsoidal samples of conductive material, they exist in the surface layer of a sample only (Mie oscillations). Frequencies of Mie oscillations are alculated for a sample of the shape of an arbitrary ellipsoid.

Kornyushin, Yuri

2007-01-01T23:59:59.000Z

194

Uniform Environmental Covenants Act (Iowa) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Uniform Environmental Covenants Act (Iowa) Uniform Environmental Covenants Act (Iowa) Uniform Environmental Covenants Act (Iowa) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State Iowa Program Type Environmental Regulations Provider Iowa Department of Natural Resources This legislation adopts a version of the federal Uniform Environmental

195

Achieving uniform distribution and dispersion of high percentage ...  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, 2014 TMS Annual Meeting & Exhibition. Symposium , Light-metal Matrix (Nano)-composites. Presentation Title, Achieving uniform ...

196

Bundle-type methods uniformly optimal for smooth and nonsmooth ...  

E-Print Network (OSTI)

Dec 7, 2010 ... present new bundle-type methods which possess the optimal rate of ... that uniformly optimal algorithms of this type have been presented in the ...

197

Evolutionary safety analysis: motivations from the air traffic management domain  

E-Print Network (OSTI)

Abstract. In order realistically and cost-effectively to realize the ATM (Air Traffic Management) 2000+ Strategy, systems from different suppliers will be interconnected to form a complete functional and operational environment, covering ground segments and aerospace. Industry will be involved as early as possible in the lifecycle of ATM projects. EURO-CONTROL manages the processes that involve the definition and validation of new ATM solutions using Industry capabilities (e.g., SMEs). In practice, safety analyses adapt and reuse system design models (produced by third parties). Technical, organisational and cost-related reasons often determine this choice, although design models are unfit for safety analysis. Design models provide limited support to safety analysis, because they are tailored for system designers. The definition of an adequate model and of an underlying methodology for its construction will be highly beneficial for whom is performing safety analyses. Limited budgets and resources, often, constrain or inhibit the model definition phase as an integral part of safety analysis. This paper is concerned with problems in modeling ATM systems for safety analysis. The main objective is to highlight a model specifically targeted to support evolutionary safety analysis. 1

Massimo Felici

2005-01-01T23:59:59.000Z

198

The Modified Allan Variance as Time-Domain Analysis Tool for Estimating the Hurst Parameter of Long-Range Dependent Traffic  

E-Print Network (OSTI)

Abstract ? Experimental measurements show that Internet traffic exhibits self-similarity and long-range dependence (LRD). A delicate issue is the estimation of traffic statistical quantities that characterize self-similarity and LRD, such as the Hurst parameter H. In this paper, we propose to use the Modified Allan Variance (MAVAR), a well-known time-domain tool originally studied for frequency stability characterization, for estimating the power-law spectrum and thus the H parameter of LRD traffic time series. This novel method is validated by comparison to one of the most widely adopted algorithms for analyzing LRD traffic: the log-scale diagram technique based on wavelet analysis. Both methods are applied to pseudo-random data series, generated with known values of H. MAVAR exhibits outstanding accuracy in estimating H, better than the classical log-scale method. Finally, both techniques are applied to a real IP traffic trace, providing a further example of the capabilities of MAVAR. Index Terms ? Fractals, fractional noise, Internet, long-range dependence, self-similarity, traffic control (communication). Work partialy supported by Ministero dell’Istruzione, dell’Università e della Ricerca (MIUR), Italy, under FIRB project TANGO. I.

Stefano Bregni; Senior Member; Luca Primerano

2004-01-01T23:59:59.000Z

199

Study on the relationship between left-turn traffic operations and safety at signalized intersections  

E-Print Network (OSTI)

Intersections are the most complex locations in a traffic system and are likely to have a higher crash count than any other location in the system. Intersection safety is related to traffic operations, such as traffic signal and approaching volume. The objective of this study is to determine the contributing factor for left-turn crashes at signalized intersections by a statistical modeling process and to develop crash prediction models. Potential contributing factors representing the characteristic of a left-turn operation were identified and considered for inclusion in crash prediction models. HCS (Highway Capacity Software) 2000 was utilized for computing some traffic indicators such as volume to capacity ratio for potential inclusion in the models. Three years of crash data were collected in the College Station area. The Signal timing and Volume data were obtained from public works in College Station. The volume data was sorted into three time periods and signal timing data were obtained for three different time periods: AM, noon, and PM. The division of time periods results from timing plans being changed for different periods. Relationship between crash count and each factor was explored to identify whether the factor has the potential to influence the crash count. Afterwards, the prediction models were developed using the negative binomial structure because of many zero samples. Akaike Information Criteria was used for selecting the model having the best fit. Wald tables provided that variables have significance in affecting the left-turn crash count. Left-turn type, sequence, volume, control delay, and post speed limit were identified as significant factors impacting left-turn crash count at a signalized intersection.

Lee, Sunghoon

2007-08-01T23:59:59.000Z

200

Increasing Market Penetration of LED Traffic Signals in New York State Review of Articles and Information on LED Traffic Signals  

E-Print Network (OSTI)

A primary purpose of this review is to identify and summarize recently published information about the use and performance of light-emitting diode (LED) traffic signals. It consists of two sections: a synopsis of experiences of municipalities using LED traffic signals in 1999 and 2000, and a discussion of technical, economic and market issues surrounding the deployment of LED signals. This review includes articles and reports published in 1999 and 2000.

Bullough, J D; Bullough, John D.; Suozzo, Margaret

2002-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "uniform traffic control" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

A uniformly second order fast sweeping method for eikonal equations  

Science Conference Proceedings (OSTI)

A uniformly second order method with a local solver based on the piecewise linear discontinuous Galerkin formulation is introduced to solve the eikonal equation with Dirichlet boundary conditions. The method utilizes an interesting phenomenon, referred ... Keywords: Discontinuous Galerkin method, Eikonal equations, Fast sweeping method, Superconvergence, Uniformly second order

Songting Luo

2013-05-01T23:59:59.000Z

202

Constructing uniform designs: A heuristic integer programming method  

Science Conference Proceedings (OSTI)

In this paper, the wrap-around L"2-discrepancy (WD) of asymmetrical design is represented as a quadratic form, thus the problem of constructing a uniform design becomes a quadratic integer programming problem. By the theory of optimization, some theoretic ... Keywords: Quadratic integer programming, Simulated annealing, Uniform design, Wrap-around L2-discrepancy

Yong-Dao Zhou; Kai-Tai Fang; Jian-Hui Ning

2012-04-01T23:59:59.000Z

203

Method for preparing spherical thermoplastic particles of uniform size  

DOE Patents (OSTI)

Spherical particles of thermoplastic material of virtually uniform roundness and diameter are prepared by cutting monofilaments of a selected diameter into rod-like segments of a selected uniform length which are then heated in a viscous liquid to effect the formation of the spherical particles.

Day, J.R.

1975-11-17T23:59:59.000Z

204

Uniform Capacity Tax and Exemption for Solar (Vermont) | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Uniform Capacity Tax and Exemption for Solar (Vermont) Uniform Capacity Tax and Exemption for Solar (Vermont) Uniform Capacity Tax and Exemption for Solar (Vermont) < Back Eligibility Agricultural Commercial Industrial Low-Income Residential Residential Savings Category Solar Buying & Making Electricity Program Info State Vermont Program Type Property Tax Incentive Rebate Amount 100% property tax exemption for systems 10 kilowatts or less Uniform $4/kilowatt property tax payment Provider Vermont Department of Taxes During the 2012 legislative session, Vermont passed a 100% property tax exemption for solar photovoltaic (PV) systems up to and including 10 kilowatts (kW). For systems greater than 10 kW, the state assesses a uniform $4 per kilowatt (kW). This applies to the equipment, not to the land. The 100% exemption for small PV systems expires January 1, 2023, although a

205

OPM Briefing on Uniformed Services Employment and Reemployment Rights Act  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

OPM Briefing on Uniformed Services Employment and Reemployment OPM Briefing on Uniformed Services Employment and Reemployment Rights Act Training OPM Briefing on Uniformed Services Employment and Reemployment Rights Act Training The Veterans' Benefits Improvement Act of 2008, Public Law (P.L.) 110-389, October 10, 2008, contains a key provision requiring all Federal agencies to provide Uniformed Services Employment and Reemployment Rights Act (USERRA) training. The USERRA training is to be provided to "any personnel of the agency who are authorized to recommend, take, or approve any personnel action that is subject to the requirements of this chapter with respect to employees of the agency." OPM Briefing on Uniformed Services Employment and Reemployment Rights Act Training Responsible Contacts Bruce Murray

206

Modeling self-organizing traffic lights with elementary cellular automata  

E-Print Network (OSTI)

There have been several highway traffic models proposed based on cellular automata. The simplest one is elementary cellular automaton rule 184. We extend this model to city traffic with cellular automata coupled at intersections using only rules 184, 252, and 136. The simplicity of the model offers a clear understanding of the main properties of city traffic and its phase transitions. We use the proposed model to compare two methods for coordinating traffic lights: a green-wave method that tries to optimize phases according to expected flows and a self-organizing method that adapts to the current traffic conditions. The self-organizing method delivers considerable improvements over the green-wave method. For low densities, the self-organizing method promotes the formation and coordination of platoons that flow freely in four directions, i.e. with a maximum velocity and no stops. For medium densities, the method allows a constant usage of the intersections, exploiting their maximum flux capacity. For high dens...

Gershenson, Carlos

2009-01-01T23:59:59.000Z

207

Legibility of freeway Lane Control Signals  

E-Print Network (OSTI)

This thesis documents the results of a laboratory study designed to evaluate and compare the glance legibility distance of commercially available freeway Lane Control Signals (LCS). Two prototype fiber-optic lane control signals were evaluated to determine their suitability for freeway-lane-control-signing applications. The LCS used in the study were obtained from C.J. Hood, Inc., and Electro Fiberoptics, Inc. This study emphasized the visibility of the standard LCS displays (their ability to be detected and recognized) rather than their comprehension (their ability to be understood by a majority of the drivers). For this, glance legibility distance was used as a Measure of Effectiveness (MOE). It is the distance at which the sign catches the attention of a driver in a limited time of exposure. The glance legibility was evaluated and compared for the corresponding symbols displayed by the two signs. An attempt was made to correlate the difference in legibility to the differences in sign design characteristics. Also evaluated was the sensitivity of glance legibility to the gender and age of the subject. The glance legibility distances of the symbols displayed by the two signals were analyzed for their compliance with the MUTCD guidelines. Glance legibility of "Red X", "Yellow X", and "Green Arrow" displayed by the two signs was found to be in the ranges of 750-950 feet, 800-1000 feet, and 1200-1400 feet respectively. The size of the sign, brightness of the display, and the pixel arrangement were found to be the main design characteristics that have a direct bearing on the legibility of the displays. Brightness of the sign is a greater determinant than the color of the display. Significant differences exist between the color versus symbol recognition distances. The signal displays were visible but not legible. The glance legibility does not depend upon the gender of the driver; however, significant differences in legibility of displays were found to exist between the younger and the older age groups. The results of this study will lead to a better understanding and utilization of LCS systems and will promote more uniformity in the design, installation, and operation of LCS systems in the most cost effective manner possible; however, further research needs to be done as regards the factors contributing to the effective visibility of freeway LCS . In summary, there is a need to make an in-depth study of the interrelationships between the LCS hardware elements (e.g. the light intensities, symbol displays, color combinations etc), geometric features and traffic conditions, mounting characteristics, and driver limitations so as to promote more uniformity in the application of LCS to freeway traffic management.

Tallamraju, Satya S

1994-01-01T23:59:59.000Z

208

State Traffic Safety Information - Fatal Crashes Involving Speeding :  

NLE Websites -- All DOE Office Websites (Extended Search)

Illinois (2007-2009) Illinois (2007-2009) Research Menu Data/Tools Apps Resources Let's Talk Research Alpha You are here Data.gov » Communities » Research » Data State Traffic Safety Information - Fatal Crashes Involving Speeding : Illinois (2007-2009) Dataset Summary Description The State Traffic Safety Information (STSI) portal is part of the larger Fatality Analysis Reporting System (FARS) Encyclopedia. STSI provides state-by-state traffic safety profiles, including: crash data, lives saved/savable, legislation, economic costs, grant funding, alcohol related crash data, performance measures, and geographic maps of crash data. Tags {geospatial,fatality,crash,data,safety,roadway,vehicle,human,person} Dataset Ratings Overall 0 No votes yet Data Utility 0 No votes yet Usefulness 0 No votes yet

209

State Traffic Safety Information - Fatal Crashes Involving a Large Truck :  

NLE Websites -- All DOE Office Websites (Extended Search)

Hawaii (2007-2009) Hawaii (2007-2009) Research Menu Data/Tools Apps Resources Let's Talk Research Alpha You are here Data.gov » Communities » Research » Data State Traffic Safety Information - Fatal Crashes Involving a Large Truck : Hawaii (2007-2009) Dataset Summary Description The State Traffic Safety Information (STSI) portal is part of the larger Fatality Analysis Reporting System (FARS) Encyclopedia. STSI provides state-by-state traffic safety profiles, including: crash data, lives saved/savable, legislation, economic costs, grant funding, alcohol related crash data, performance measures, and geographic maps of crash data. Tags {geospatial,fatality,crash,data,safety,roadway,vehicle,human,person} Dataset Ratings Overall 0 No votes yet Data Utility 0 No votes yet Usefulness 0 No votes yet

210

State Traffic Safety Information - Fatal Crashes Involving a Large Truck :  

NLE Websites -- All DOE Office Websites (Extended Search)

Delaware (2007-2009) Delaware (2007-2009) Research Menu Data/Tools Apps Resources Let's Talk Research Alpha You are here Data.gov » Communities » Research » Data State Traffic Safety Information - Fatal Crashes Involving a Large Truck : Delaware (2007-2009) Dataset Summary Description The State Traffic Safety Information (STSI) portal is part of the larger Fatality Analysis Reporting System (FARS) Encyclopedia. STSI provides state-by-state traffic safety profiles, including: crash data, lives saved/savable, legislation, economic costs, grant funding, alcohol related crash data, performance measures, and geographic maps of crash data. Tags {geospatial,fatality,crash,data,safety,roadway,vehicle,human,person} Dataset Ratings Overall 0 No votes yet Data Utility 0 No votes yet Usefulness

211

State Traffic Safety Information - Fatal Crashes Involving Speeding :  

NLE Websites -- All DOE Office Websites (Extended Search)

Hawaii (2007-2009) Research Menu Data/Tools Apps Resources Let's Talk Research Alpha You are here Data.gov » Communities » Research » Data State Traffic Safety Information - Fatal Crashes Involving Speeding : Hawaii (2007-2009) Dataset Summary Description The State Traffic Safety Information (STSI) portal is part of the larger Fatality Analysis Reporting System (FARS) Encyclopedia. STSI provides state-by-state traffic safety profiles, including: crash data, lives saved/savable, legislation, economic costs, grant funding, alcohol related crash data, performance measures, and geographic maps of crash data. Tags {geospatial,fatality,crash,data,safety,roadway,vehicle,human,person} Dataset Ratings Overall 0 No votes yet Data Utility 0 No votes yet Usefulness 0 No votes yet

212

State Traffic Safety Information - Fatal Crashes Involving a Large Truck :  

NLE Websites -- All DOE Office Websites (Extended Search)

District of Columbia (2007-2009) District of Columbia (2007-2009) Research Menu Data/Tools Apps Resources Let's Talk Research Alpha You are here Data.gov » Communities » Research » Data State Traffic Safety Information - Fatal Crashes Involving a Large Truck : District of Columbia (2007-2009) Dataset Summary Description The State Traffic Safety Information (STSI) portal is part of the larger Fatality Analysis Reporting System (FARS) Encyclopedia. STSI provides state-by-state traffic safety profiles, including: crash data, lives saved/savable, legislation, economic costs, grant funding, alcohol related crash data, performance measures, and geographic maps of crash data. Tags {geospatial,fatality,crash,data,safety,roadway,vehicle,human,person} Dataset Ratings Overall 0 No votes yet Data Utility

213

Laboratory to change vehicle traffic-screening regimen at vehicle  

NLE Websites -- All DOE Office Websites (Extended Search)

Changes to vehicle traffic-screening 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 won't be staffed by a Laboratory protective force officer. September 1, 2009 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials.

214

State Traffic Safety Information - Fatal Single Vehicle Crashes : District  

NLE Websites -- All DOE Office Websites (Extended Search)

District District of Columbia (2007-2009) Research Menu Data/Tools Apps Resources Let's Talk Research Alpha You are here Data.gov » Communities » Research » Data State Traffic Safety Information - Fatal Single Vehicle Crashes : District of Columbia (2007-2009) Dataset Summary Description The State Traffic Safety Information (STSI) portal is part of the larger Fatality Analysis Reporting System (FARS) Encyclopedia. STSI provides state-by-state traffic safety profiles, including: crash data, lives saved/savable, legislation, economic costs, grant funding, alcohol related crash data, performance measures, and geographic maps of crash data. Tags {geospatial,fatality,crash,data,safety,roadway,vehicle,human,person} Dataset Ratings Overall 0 No votes yet Data Utility 0 No votes yet

215

State Traffic Safety Information - Fatal Crashes Involving Speeding : Iowa  

NLE Websites -- All DOE Office Websites (Extended Search)

Iowa Iowa (2007-2009) Research Menu Data/Tools Apps Resources Let's Talk Research Alpha You are here Data.gov » Communities » Research » Data State Traffic Safety Information - Fatal Crashes Involving Speeding : Iowa (2007-2009) Dataset Summary Description The State Traffic Safety Information (STSI) portal is part of the larger Fatality Analysis Reporting System (FARS) Encyclopedia. STSI provides state-by-state traffic safety profiles, including: crash data, lives saved/savable, legislation, economic costs, grant funding, alcohol related crash data, performance measures, and geographic maps of crash data. Tags {geospatial,fatality,crash,data,safety,roadway,vehicle,human,person} Dataset Ratings Overall 0 No votes yet Data Utility 0 No votes yet Usefulness 0 No votes yet

216

State Traffic Safety Information - Fatal Crashes Involving a Large Truck :  

NLE Websites -- All DOE Office Websites (Extended Search)

Indiana (2007-2009) Indiana (2007-2009) Research Menu Data/Tools Apps Resources Let's Talk Research Alpha You are here Data.gov » Communities » Research » Data State Traffic Safety Information - Fatal Crashes Involving a Large Truck : Indiana (2007-2009) Dataset Summary Description The State Traffic Safety Information (STSI) portal is part of the larger Fatality Analysis Reporting System (FARS) Encyclopedia. STSI provides state-by-state traffic safety profiles, including: crash data, lives saved/savable, legislation, economic costs, grant funding, alcohol related crash data, performance measures, and geographic maps of crash data. Tags {geospatial,fatality,crash,data,safety,roadway,vehicle,human,person} Dataset Ratings Overall 0 No votes yet Data Utility 0 No votes yet Usefulness

217

State Traffic Safety Information - Fatal Crashes Involving a Large Truck :  

NLE Websites -- All DOE Office Websites (Extended Search)

Idaho (2007-2009) Idaho (2007-2009) Research Menu Data/Tools Apps Resources Let's Talk Research Alpha You are here Data.gov » Communities » Research » Data State Traffic Safety Information - Fatal Crashes Involving a Large Truck : Idaho (2007-2009) Dataset Summary Description The State Traffic Safety Information (STSI) portal is part of the larger Fatality Analysis Reporting System (FARS) Encyclopedia. STSI provides state-by-state traffic safety profiles, including: crash data, lives saved/savable, legislation, economic costs, grant funding, alcohol related crash data, performance measures, and geographic maps of crash data. Tags {geospatial,fatality,crash,data,safety,roadway,vehicle,human,person} Dataset Ratings Overall 0 No votes yet Data Utility 0 No votes yet Usefulness 0 No votes yet

218

State Traffic Safety Information - Fatal Crashes Involving Speeding :  

NLE Websites -- All DOE Office Websites (Extended Search)

Kansas (2007-2009) Research Menu Data/Tools Apps Resources Let's Talk Research Alpha You are here Data.gov » Communities » Research » Data State Traffic Safety Information - Fatal Crashes Involving Speeding : Kansas (2007-2009) Dataset Summary Description The State Traffic Safety Information (STSI) portal is part of the larger Fatality Analysis Reporting System (FARS) Encyclopedia. STSI provides state-by-state traffic safety profiles, including: crash data, lives saved/savable, legislation, economic costs, grant funding, alcohol related crash data, performance measures, and geographic maps of crash data. Tags {geospatial,fatality,crash,data,safety,roadway,vehicle,human,person} Dataset Ratings Overall 0 No votes yet Data Utility 0 No votes yet Usefulness 0 No votes yet

219

State Traffic Safety Information - Fatal Crashes Involving Speeding : Maine  

NLE Websites -- All DOE Office Websites (Extended Search)

Maine Maine (2007-2009) Research Menu Data/Tools Apps Resources Let's Talk Research Alpha You are here Data.gov » Communities » Research » Data State Traffic Safety Information - Fatal Crashes Involving Speeding : Maine (2007-2009) Dataset Summary Description The State Traffic Safety Information (STSI) portal is part of the larger Fatality Analysis Reporting System (FARS) Encyclopedia. STSI provides state-by-state traffic safety profiles, including: crash data, lives saved/savable, legislation, economic costs, grant funding, alcohol related crash data, performance measures, and geographic maps of crash data. Tags {geospatial,fatality,crash,data,safety,roadway,vehicle,human,person} Dataset Ratings Overall 0 No votes yet Data Utility 0 No votes yet Usefulness 0 No votes yet

220

As you prepare for your upcoming beam time, please be aware that construction is planned to update SLAC Gate 17 with RFID proximity card access hardware and to change the stairs next to the Security hut to an ADA compliant ramp. Please forward this to your proposal collaborators (and ensure that all users have registered and completed training before they arrive). This construction is scheduled to begin Tuesday 5/28 and be completed by 6/28. During this construction, access to the LCLS and SSRL buildings and experimental facilities will be provided as follows: VEHICLES ONLY THROUGH GATE 17 5/28-6/28 0600-1530 (6 am-3:30 pm) Construction Zone. Only VEHICLE traffic will be allowed access through Gate 17 and flagman will provide traffic control. 1530-1800 (3:30-6:00 pm) Assumes construction will have stopped for the day; both traffic lanes will be open for vehicles. 1800-0600 (6 pm-6 am) As now, Gate 17 will be closed or barricaded overnight. PEDESTRIANS ONLY THROUGH GATE 16 5/28-6/28 The pedestrian turnstile at Gate 16A will not change. The turnstile is available for pedestrian use 24/7 as long as the individual has a valid SLAC ID badge (and there is a guard at Gate 30 to 'buzz' them through). 0700-1600 (6 am-4 pm) Pedestrians who would normally walk through Gate 17 will instead follow the detour to Gate 16 swing gate which will be unlocked and staffed by Security. A valid SLAC ID badge is needed to enter; new users without IDs will be allowed to proceed for check-in and badging after confirmation with the User Research Administration Office (see detour map attached). FYI - After the construction is completed and proximity card readers are fully functional, users and staff will enter Gates 17 and 30 using an activated RFID proximity card. More details to follow.  

NLE Websites -- All DOE Office Websites (Extended Search)

Building 137 Building 137 Bldg. 270 CONSTRUCTION IMPACTS PEDESTRIAN AND VEHICLE ACCESS THROUGH SLAC SECURITY GATE 17 ~ May 28-June 28, 2013 The stairs next to the Gate 17 Guard House will be replaced with an ADA compliant ramp; the turnstile and fence at SLAC Gate 17 will be updated with RFID proximity card access hardware. During this construction, access beyond the fence, including the SSRL and LCLS buildings and user facilities will be provided as follows: VEHICLES ONLY THROUGH GATE 17 Security will continue to check for valid ID badges. 0600-1530 (6 am-3:30 pm) - Construction Zone. Only VEHICLE traffic will be allowed access through Gate 17 and flagman will provide traffic control. Security will 1530-1800 (3:30-6:00 pm) - Assuming construction has

Note: This page contains sample records for the topic "uniform traffic control" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Methods and systems for detecting abnormal digital traffic  

DOE Patents (OSTI)

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.

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

2011-03-22T23:59:59.000Z

222

Uniform Methods for Determining Energy Efficiency Savings and Increasing  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Uniform Methods for Determining Energy Efficiency Savings and Uniform Methods for Determining Energy Efficiency Savings and Increasing Electric Utility Confidence in Reported Savings Now Available Uniform Methods for Determining Energy Efficiency Savings and Increasing Electric Utility Confidence in Reported Savings Now Available May 23, 2013 - 4:01pm Addthis The National Renewable Energy Laboratory (NREL) has published protocols for estimating energy savings for residential and commercial energy efficiency programs and measures through the recently released "The Uniform Methods Project: Methods for Determining Energy Efficiency Savings for Specific Measures." Funded by the Office of Electricity Delivery and Energy Reliability and the Office of Energy Efficiency and Renewable Energy, the developed protocols provide a straightforward method for evaluating gross

223

Uniform-Distribution Attribute Noise Learnability Nader H. Bshouty  

E-Print Network (OSTI)

by Shackelford and Volper [10] for the case of k-DNF expressions. Their uniform attribute noise model consists] that is the same for every attribute. While Shackelford and Volper assumed that the learner knows the noise rate p

Jackson, Jeffrey

224

About the Uniform Methods Project | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

About the Uniform Methods Project About the Uniform Methods Project About the Uniform Methods Project The Uniform Methods Project is developing Methods for Determining Energy Efficiency Savings for Specific Measures through collaboration with energy efficiency program administrators, stakeholders, and EM&V consultants-including the firms that perform up to 70% of the energy efficiency evaluations in the United States. The goal is to strengthen the credibility of energy efficiency programs by improving EM&V, increasing the consistency and transparency of how energy savings are determined. On this page you will find information about the purpose of the project, a description of what is included in the protocols, a list of benefits this project will bring to the stakeholders of U.S. energy efficiency programs,

225

Transportation cost inequalities for diffusions under uniform distance  

E-Print Network (OSTI)

We prove the transportation inequality with the uniform norm for the laws of diffusion processes with Lipschitz and/or dissipative coefficients and apply them to some singular stochastic differential equations of interest.

Ali Suleyman Ustunel

2010-09-27T23:59:59.000Z

226

The Response of a Uniform Horizontal Temperature Gradient to Heating  

Science Conference Proceedings (OSTI)

The response of a uniform horizontal temperature gradient to prescribed fixed heating is calculated in the context of an extended version of surface quasigeostrophic dynamics. It is found that for zero mean surface flow and weak cross-gradient ...

Maarten H. P. Ambaum; Panos J. Athanasiadis

2007-10-01T23:59:59.000Z

227

Non-uniform emission studies of a magnetron injection gun  

E-Print Network (OSTI)

This thesis investigates the experimental measurement and theoretical simulation of the effects of azimuthal emission non-uniformity of a 96 kV, 40 amp magnetron injection gun (MIG) used in a gyrotron. The accomplishments ...

Marchewka, Chad D. (Chad Daniel)

2006-01-01T23:59:59.000Z

228

Currents of non-uniformities in solar atmosphere  

E-Print Network (OSTI)

Non-uniformities of plasma and magnetic field are known to cause electric currents in plasma. Electron density gradient causes diffusion current, electron temperature gradient - thermocurrent, gradient of magnetic field module - gradient current, curvature of magnetic field lines - centrifugal current. Being independent of electric field, the currents of non-uniformities may act as extraneous to cause charge separation and electric field in plasma. In cosmos, the currents of non-uniformities were observed; in particular, gradient and centrifugal currents - in magnetosphere, diffusion one - in a comet coma and in artificial plasma cloud. On present work, the gradient current was investigated more fully than earlier. Two unknown components, parallel and perpendicular to magnetic field were found. The equation for gradient current density was obtained. We compared the theoretical densities of currents of non-uniformities (with usage of electron pressure and corresponding gradients) with measured current densitie...

Stepanov, S I

2006-01-01T23:59:59.000Z

229

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

E-Print Network (OSTI)

Motivated by recent interest for multi-agent systems and smart power grid architectures, we discuss the synchronization problem for the network-reduced model of a power system with non-trivial transfer conductances. Our key insight is to exploit the relationship between the power network model and a first-order model of coupled oscillators. Assuming overdamped generators (possibly due to local excitation controllers), a singular perturbation analysis shows the equivalence between the classic swing equations and a non-uniform Kuramoto model. Here, non-uniform Kuramoto oscillators are characterized by multiple time constants, non-homogeneous coupling, and non-uniform phase shifts. Extending methods from transient stability, synchronization theory, and consensus protocols, we establish sufficient conditions for synchronization of non-uniform Kuramoto oscillators. These conditions reduce to and improve upon previously-available tests for the standard Kuramoto model. Combining our singular perturbation and Kuramoto analyses, we derive concise and purely algebraic conditions that relate synchronization and transient stability of a power network to the underlying system parameters and initial conditions.

Florian Dorfler; Francesco Bullo

2009-10-29T23:59:59.000Z

230

Perceived crime and traffic safety is related to physical activity among adults in Nigeria  

E-Print Network (OSTI)

Loukaitou-Sideris A, Eckc JE: Crime prevention and activeOyeyemi et al: Perceived crime and traffic safety is relatedARTICLE Open Access Perceived crime and traffic safety is

Oyeyemi, Adewale L; Adegoke, Babatunde O; Sallis, James F; Oyeyemi, Adetoyeje Y; De Bourdeaudhuij, Ilse

2012-01-01T23:59:59.000Z

231

The Effect of Snow on Traffic Counts in Western New York State  

Science Conference Proceedings (OSTI)

While most people know anecdotally that weather affects traffic, relatively little research has examined the correlation between snow and traffic in great detail. Most studies have also been difficult to generalize for other areas and regions ...

David A. Call

2011-04-01T23:59:59.000Z

232

Realistic internet traffic simulation through mixture modeling and a case study  

Science Conference Proceedings (OSTI)

Internet background traffic modeling and simulation is the main challenge when constructing a test environment for network intrusion detection experiments. However, a realistic simulation of network traffic through analytical models is difficult, because ...

Song Luo; Gerald A. Marin

2005-12-01T23:59:59.000Z

233

VTrack: accurate, energy-aware road traffic delay estimation using mobile phones  

Science Conference Proceedings (OSTI)

Traffic delays and congestion are a major source of inefficiency, wasted fuel, and commuter frustration. Measuring and localizing these delays, and routing users around them, is an important step towards reducing the time people spend stuck in traffic. ... Keywords: GPS, car, congestion, energy, localization, location, mobile, phone, sensor, traffic, transportation

Arvind Thiagarajan; Lenin Ravindranath; Katrina LaCurts; Samuel Madden; Hari Balakrishnan; Sivan Toledo; Jakob Eriksson

2009-11-01T23:59:59.000Z

234

The impact of a realistic packet traffic model on the performance of surveillance wireless sensor networks  

Science Conference Proceedings (OSTI)

It is quite common to see that classical periodic or Poisson packet traffic models are used for evaluating the performance of wireless sensor networks (WSNs). However, these models may not be appropriate for modeling the data traffic resulting from a ... Keywords: Intrusion detection applications, Packet traffic model, Surveillance sensor networks, Wireless sensor networks

Ilker Demirkol; Cem Ersoy; Fatih Alagöz; Hakan Deliç

2009-02-01T23:59:59.000Z

235

Traffic-driven power saving in operational 3G cellular networks  

Science Conference Proceedings (OSTI)

Base stations (BSes) in the 3G cellular network are not energy proportional with respect to their carried traffic load. Our mea- surements show that 3G traffic exhibits high fluctuations both in time and over space, thus incurring energy waste. In this ... Keywords: 3g network traffic, cellular networks, energy efficiency

Chunyi Peng; Suk-Bok Lee; Songwu Lu; Haiyun Luo; Hewu Li

2011-09-01T23:59:59.000Z

236

A Comparison of Methods for Estimating the Tail Index of Heavy-tailed Internet Traffic  

E-Print Network (OSTI)

1 A Comparison of Methods for Estimating the Tail Index of Heavy-tailed Internet Traffic Karim the effects of heavy-tailedness in network traffic patterns and shown that Internet traffic flows exhibit characteristics of self-similarity that can be explained by the heavy-tailedness of the various distributions

Davies, John N.

237

Max-Weight Scheduling in Queueing Networks with Heavy-Tailed Traffic  

E-Print Network (OSTI)

1 Max-Weight Scheduling in Queueing Networks with Heavy-Tailed Traffic Mihalis G. Markakis, Eytan network with a mix of heavy-tailed and light- tailed traffic, and analyze the impact of heavy unstable otherwise. First, we show that a heavy-tailed traffic flow is delay unstable under any scheduling

Tsitsiklis, John

238

Effect of Traffic on Sales and Conversion Rates of Retail Stores  

Science Conference Proceedings (OSTI)

Attracting shoppers to stores and converting the incoming traffic into sales profitably are vital for the financial health of retailers. In this paper, we use proprietary data pertaining to an apparel retailer to study the relationship between store ... Keywords: retail operations, store labor management, store performance, traffic uncertainty, traffic variability

Olga Perdikaki; Saravanan Kesavan; Jayashankar M. Swaminathan

2012-01-01T23:59:59.000Z

239

Selection of information types based on personal utility: a testbed for traffic information markets  

Science Conference Proceedings (OSTI)

Traffic is an interesting research area for multi-agent systems, as the inter-dependence of actions leads to a high frequency of implicit coordination decisions among agents. The present work investigates the simulation of a market for traffic information. ... Keywords: adaption and learning, traffic simulation

Franziska Klügl; Ana L. C. Bazzan; Joachim Wahle

2003-07-01T23:59:59.000Z

240

Youtube traffic characterization: a view from the edge  

Science Conference Proceedings (OSTI)

This paper presents a traffic characterization study of the popular video sharing service, YouTube. Over a three month period we observed almost 25 million transactions between users on an edge network and YouTube, including more than 600,000 video downloads. ... Keywords: characterization, multimedia, web 2.0, youtube

Phillipa Gill; Martin Arlitt; Zongpeng Li; Anirban Mahanti

2007-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "uniform traffic control" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Approximating the traffic grooming problem in tree and star networks  

Science Conference Proceedings (OSTI)

We consider the problem of grooming paths in all-optical networks with tree topology so as to minimize the switching cost, measured by the total number of used ADMs. We first present efficient approximation algorithms with approximation factor of 2 ln ... Keywords: add-drop multiplexer (ADM), optical networks, traffic grooming, tree networks, wavelength division multiplexing (WDM)

Michele Flammini; Gianpiero Monaco; Luca Moscardelli; Mordechai Shalom; Shmuel Zaks

2006-06-01T23:59:59.000Z

242

City of Phildelphia: Light emitting diodes for traffic signal displays  

SciTech Connect

This project investigated the feasibility of using light emitting diodes (LEDs) for red traffic signals in a demonstration program at 27 signalized intersections in the City of Philadelphia. LED traffic signals have the potential to achieve significant savings over standard incandescent signals in terms of energy usage and costs, signal relamping costs, signal system maintenance costs, tort liability, and environmental impact. Based on successful experience with the demonstration program, the City of Philadelphia is currently developing funding for the conversion of all existing red incandescent traffic signals at approximately 2,700 intersections to LED signals. This program is expected to cost approximately $4.0 million and save about $850,000 annually in energy costs. During late 1993 and early 1994, 212 red LED traffic signals (134 8-inch signals and 78 12-inch signals) were installed at 27 intersections in Philadelphia. The first group of 93 signals were installed at 13 prototypical intersections throughout the City. The remaining group of signals were installed on a contiguous route in West Philadelphia consisting of standard incandescent signals and LED signals interspersed in a random pattern.

1995-12-01T23:59:59.000Z

243

Traffic and Transportation Committee Meeting Summary of Meeting Notes  

E-Print Network (OSTI)

Traffic and Transportation Committee Meeting Summary of Meeting Notes October 5, 2009 - 1:30 PM Kevin Young Ned Hacker Salt Lake City Transportation WFRC Robert Miles UDOT Rob Kistler U of U person introduced him/herself to the group. II. The group discussed the future meeting schedule (Agenda

Capecchi, Mario R.

244

Traffic Measurement and Statistical Analysis in a Disaster Area Scenario  

E-Print Network (OSTI)

-of-Hospital] disaster response."([5]) Public safety units need reliable communication independent of any inTraffic Measurement and Statistical Analysis in a Disaster Area Scenario Nils Aschenbruck, Matthias, 53117 Bonn, Germany {aschenbruck, matthew, martini, toelle}@cs.uni-bonn.de Abstract-- Disaster areas

Frank, Matthias

245

Statistical Analysis of Traffic Measurements in a Disaster Area Scenario  

E-Print Network (OSTI)

challenges of information sharing in OOH [Out-of-Hospital] disaster response."([1]) Performance evaluationStatistical Analysis of Traffic Measurements in a Disaster Area Scenario Considering Heavy Load-- Catastrophes cause an area of destruction including destroyed infrastructure. These disaster area scenarios

Frank, Matthias

246

Detection of illicit traffic based on multiscale analysis  

Science Conference Proceedings (OSTI)

Recent years have witnessed a huge increase in the number and variety of Internet applications, as well as on the number and diversity of security attacks to network users and systems. Consequently, the need for an accurate mapping of traffic to its ... Keywords: application identification, cluster analysis, licit and illict applications, multifractal behavior, multiscale analysis, wavelets

Eduardo Rocha; Paulo Salvador; António Nogueira

2009-09-01T23:59:59.000Z

247

Backoff algorithms performance in burst-like traffic  

Science Conference Proceedings (OSTI)

In the present paper several backoff algorithms are considered to analysis their behavior in burst-like traffic of smart metering network: YITRAN, Binary Exponential and Polynomial backoff algorithms. The comparison was performed by means of transmission ... Keywords: Markov chains, backoff algorithms, smart grid

Ievgenii Tsokalo; Yamnenko Yulia; Stanislav Mudriievskyi

2011-09-01T23:59:59.000Z

248

Traffic and Transportation Committee Summary of Meeting Notes  

E-Print Network (OSTI)

Traffic and Transportation Committee Summary of Meeting Notes March 31, 2006 ­ 1:30pm ­ 1210 Annex Young Salt Lake City - Transportation Tim Harpst Salt Lake City - Transportation Dan Bergenthal Salt Lake City - Transportation Robin Carbaugh Yalecrest Neighborhood Council Hal Johnson UTA-Mgr. BRT

Capecchi, Mario R.

249

Traffic and Transportation Committee Meeting Summary of Meeting Notes  

E-Print Network (OSTI)

to alternative transportation even as they grow. Plans for the future include increasing the number of bikeTraffic and Transportation Committee Meeting Summary of Meeting Notes September 15, 2006- 1:30 PM 6 Jenkin Howard Hughes Medical Institute @ U of U Joe Perrin Salt Lake City, Transportation Advisory Board

Capecchi, Mario R.

250

Distributed wide-area traffic management for cloud services  

Science Conference Proceedings (OSTI)

The performance of interactive cloud services depends heavily on which data centers handle client requests, and which wide-area paths carry traffic. While making these decisions, cloud service providers also need to weigh operational considerations like ... Keywords: joint optimization, multi-homed routing, request mapping

Srinivas Narayana; Joe Wenjie Jiang; Jennifer Rexford; Mung Chiang

2012-06-01T23:59:59.000Z

251

SEMSim: A Distributed Architecture for Multi-scale Traffic Simulation  

Science Conference Proceedings (OSTI)

With the fast urbanization of our modern society, transportation systems in cities are facing increasing problems such as congestion, collisions, and high levels of emissions. Researchers have been searching for solutions by investigating better urban ... Keywords: Nanoscopic Traffic Simulation, Parallel and Distributed Simulation

Yadong Xu; Heiko Aydt; Michael Lees

2012-07-01T23:59:59.000Z

252

ASSIST: access controlled ship identification streams  

Science Conference Proceedings (OSTI)

The International Maritime Organization (IMO) requires a majority of cargo and passenger ships to use the Automatic Identification System (AIS) for navigation safety and traffic control. Distributing live AIS data on the Internet can offer a global view ...

Baljeet Malhotra; Wee-Juan Tan; Jianneng Cao; Thomas Kister; Stéphane Bressan; Kian-Lee Tan

2011-11-01T23:59:59.000Z

253

Characterizing the IEEE 802.11 Traffic: The Wireless Side  

E-Print Network (OSTI)

Many studies on measurement and characterization of wireless LANs have been performed recently. Most of these measurements have been conducted from the wired portion of the network based on wired monitoring or SNMP statistics. In this paper we argue that traffic measurements from a wireless vantage point in the network are more appropriate than wired measurements or SNMP statistics, to expose the wireless medium characteristics and their impact on the traffic patterns. While it is easier to make consistent measurements in the wired part of a network, such measurements can not observe the significant vagaries present in the wireless medium itself. As a consequence constructing an accurate measurement system from a wireless vantage point is important but usually quite difficult due to the noisy wireless channel. In our work we have explored the various issues in implementing such a system to monitor traffic in an IEEE 802.11 based wireless network. We show the effectiveness of the wireless monitoring by quantitatively comparing it with SNMP and measurements at wired vantage points. We also show the analysis of a typical computer science department network traffic using the wireless monitoring technique. Our analysis reveals rich information about the PHY/MAC layers of the IEEE 802.11 protocol such as the typical traffic mix of different frame types, their temporal characteristics, correlation with the user activities and the error characteristics of the wireless medium. Moreover, we identify anomalies in the operation of the IEEE 802.11 MAC protocol. Our results show excessive retransmissions of some management frame types reducing the useful throughput of the wireless network. We also find that some features of the protocol, which were designed to reduce the retransmissi...

Jihwang Yeo; Moustafa Youssef; Ashok Agrawala

2004-01-01T23:59:59.000Z

254

Currents of non-uniformities in solar atmosphere  

E-Print Network (OSTI)

Non-uniformities of plasma and magnetic field are known to cause electric currents in plasma. Electron density gradient causes diffusion current, electron temperature gradient - thermocurrent, gradient of magnetic field module - gradient current, curvature of magnetic field lines - centrifugal current. Being independent of electric field, the currents of non-uniformities may act as extraneous to cause charge separation and electric field in plasma. In cosmos, the currents of non-uniformities were observed; in particular, gradient and centrifugal currents - in magnetosphere, diffusion one - in a comet coma and in artificial plasma cloud. On present work, the gradient current was investigated more fully than earlier. Two unknown components, parallel and perpendicular to magnetic field were found. The equation for gradient current density was obtained. We compared the theoretical densities of currents of non-uniformities (with usage of electron pressure and corresponding gradients) with measured current densities (calculated as rotor of magnetic field) for sun photosphere. It follows from the comparison that the currents of non-uniformities play important, may be main, role in measured local current in photosphere. It is necessary to consider in electromagnetic models.

S. I. Stepanov

2006-10-30T23:59:59.000Z

255

BUCSTR2000017 1 TCP Congestion Control and Heavy Tails  

E-Print Network (OSTI)

BUCS­TR­2000­017 1 TCP Congestion Control and Heavy Tails LIANG GUO MARK CROVELLA IBRAHIM MATTA­ ies have shown that there is a close relationship between heavy­tailed distribution of various traffic traffic with heavy­tailed OFF, or idle, periods, and therefore introduces long­range de­ pendence

Texas at Arlington, University of

256

Effects of the chemomechanical stepping cycle on the traffic of molecular motors  

E-Print Network (OSTI)

We discuss effects of the stepping kinetics of molecular motors on their traffic behavior on crowded filaments using a simple two-state chemomechanical cycle. While the general traffic behavior is quite robust with respect to the detailed kinetics of the step, a few observable parameters exhibit a strong dependence on these parameters. Most strikingly, the effective unbinding rate of the motors may both increase and decrease with increasing traffic density, depending on the details of the motor step. Likewise the run length either exhibits a strong decrease or almost no dependence on the traffic density. We compare our theoretical results with recent experimental observations on motor traffic.

Stefan Klumpp; Yan Chai; Reinhard Lipowsky

2008-10-09T23:59:59.000Z

257

The Uniform Methods Project: Methods for Determining Energy Efficiency  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

The Uniform Methods Project: Methods for Determining Energy The Uniform Methods Project: Methods for Determining Energy Efficiency Savings for Specific Measures (April 2013) The Uniform Methods Project: Methods for Determining Energy Efficiency Savings for Specific Measures (April 2013) In April 2013 the National Renewable Energy Laboratory (NREL) published the first set of protocols for determining energy savings from energy efficiency measures and programs. Funded by the Office of Electricity Delivery and Energy Reliability and the Office of Energy Efficiency and Renewable Energy, the developed protocols provide a straightforward method for evaluating gross energy savings for each of the most common residential and commercial measures and programs offered by ratepayer-funded energy efficiency programs in the US. Using a single measurement and verification

258

Persistent Uniform Resource Locators (PURLs) | Scientific and Technical  

Office of Scientific and Technical Information (OSTI)

Persistent Uniform Resource Locators (PURLs) Persistent Uniform Resource Locators (PURLs) Print page Print page Email page Email page PURLs (Persistent Uniform Resource Locators) are Web addresses that act as permanent identifiers in the face of a dynamic and changing Web infrastructure. Instead of resolving directly to Web resources, PURLs describe an intermediate location that allows the underlying Web addresses of resources to change over time without negatively affecting systems that depend on them. This capability provides continuity of references to network resources that may migrate from machine to machine for various reasons. Operation PURLs look just like URLs because they are valid URLs. A PURL has three parts: the protocol used to access the PURL resolver, the resolver IP address or domain, and a user-assigned name.

259

Alternative Fuels Data Center: Natural Gas Safety after a Traffic Accident  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Natural Gas Safety Natural Gas Safety after a Traffic Accident to someone by E-mail Share Alternative Fuels Data Center: Natural Gas Safety after a Traffic Accident on Facebook Tweet about Alternative Fuels Data Center: Natural Gas Safety after a Traffic Accident on Twitter Bookmark Alternative Fuels Data Center: Natural Gas Safety after a Traffic Accident on Google Bookmark Alternative Fuels Data Center: Natural Gas Safety after a Traffic Accident on Delicious Rank Alternative Fuels Data Center: Natural Gas Safety after a Traffic Accident on Digg Find More places to share Alternative Fuels Data Center: Natural Gas Safety after a Traffic Accident on AddThis.com... More in this section... Natural Gas Basics Benefits & Considerations Stations Vehicles Availability Conversions Emissions

260

Magnetic properties of the nucleon in a uniform background field  

E-Print Network (OSTI)

We present results for the magnetic moment and magnetic polarisability of the neutron and the magnetic moment of the proton. These results are calculated using the uniform background field method on 32^3 x 64 dynamical QCD lattices provided by the PACS-CS collaboration as part of the ILDG. We use a uniform background magnetic field quantised by the periodic spatial volume. We investigate ways to improve the effective energy plots used to calculate magnetic polarisabilities, including the use of correlation matrix techniques with various source smearings.

Thomas Primer; Waseem Kamleh; Derek Leinweber; Matthias Burkardt

2013-07-05T23:59:59.000Z

Note: This page contains sample records for the topic "uniform traffic control" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Kolkata Paise Restaurant Problem in Some Uniform Learning Strategy Limits  

E-Print Network (OSTI)

We study the dynamics of some uniform learning strategy limits or a probabilistic version of the "Kolkata Paise Restaurant" problem, where N agents choose among N equally priced but differently ranked restaurants every evening such that each agent can get dinner in the best possible ranked restaurant (each serving only one customer and the rest arriving there going without dinner that evening). We consider the learning to be uniform among the agents and assume that each follow the same probabilistic strategy dependent on the information of the past successes in the game. The numerical results for utilization of the restaurants in some limiting cases are analytically examined.

Ghosh, Asim; Chakrabarti, Bikas K

2009-01-01T23:59:59.000Z

262

Microsoft Word - 4L_Traffic_DEIR.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

L-1 ESA / 201074 L-1 ESA / 201074 Public Circulation Draft January 22, 2007 IV.L. Transportation/Traffic IV.L.1 Introduction This chapter evaluates project impacts on transportation facilities and existing transportation operating conditions in the vicinity of the project area, including neighborhood traffic, vehicular circulation, parking, transit and shuttle services, and pedestrian and bicycle circulation. IV.L.2 Setting LBNL is located close to three major highways: Interstate 80/580 1 approximately three miles to the west, and State Routes (SR) 24 and 13, two miles to the south. Access from the Lab to I-80/580 is through the city of Berkeley via arterial roads. Access to SR 24 and SR 13 is via Tunnel Road. Grizzly Peak Boulevard, which runs through a largely undeveloped area, provides a

263

Atypical Behavior Identification in Large Scale Network Traffic  

SciTech Connect

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.

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

2011-10-23T23:59:59.000Z

264

Spin flip probability of electron in a uniform magnetic field  

SciTech Connect

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.

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

265

BACKSCATTER GUAGE DESCRIPTION FOR INSPECTION OF NEUTRON ABSORBER AND UNIFORMITY  

SciTech Connect

This paper describes design, calibration, and testing of a dual He-3 detector neutron backscatter gauge for use in the Savannah River Site Mixed Oxide Fuel project. The gauge is demonstrated to measure boron content and uniformity in concrete slabs used in the facility construction.

Dewberry, R.; Gibbs, K.; Couture, A.

2012-05-23T23:59:59.000Z

266

Optimal properties of the uniform algebraic trigonometric B-splines  

E-Print Network (OSTI)

In this paper, we construct a matrix, which transforms a generalized C-Bézier basis into a generalized uniform algebraic-trigonometric B-spline (C-B-spline or UAT B-spline) basis. We also show that it is a totally positive matrix and give a normalized B-basis of the generalized UAT B-splines.

Guozhao Wang; Yajuan Li

2006-01-01T23:59:59.000Z

267

Uniform CLT for Markov chains with a countable state  

E-Print Network (OSTI)

.1) then the uniform CLT holds over F. 1 #12;In the discrete space case, the Borisov-Durst theorem [5, p47] says = j} | X0 = i) . Levental (1990) [12] generalized Durst and Dudley's result (1981) [7] that (a) and (b

Tsai, Tsung-Hsi

268

Design of thermal imprinting system with uniform residual thickness  

Science Conference Proceedings (OSTI)

A new thermal imprinting system for the printed circuit boards (PCBs) with both large areas and fine conducting lines was developed adopting hot airs with a high pressure. Several small nickel stamps were used to cover the large area, and the stamps ... Keywords: Patterned circuit boards, Thermal imprinting system, Uniformity of residual thickness

Won-Ho Shin

2009-11-01T23:59:59.000Z

269

Uniform Dispersion of Nanoparticles in Metal Matrix Nanocomposites  

Science Conference Proceedings (OSTI)

Conference Tools for 2012 TMS Annual Meeting & Exhibition ... Two examples are presented in this report: (1) uniform dispersion of Al2O3 nanoparticles in A206 ... Aluminum Metal Matrix Composite via Direct Metal Laser Deposition: Processing And Mechanical Characterization ... Contact programming@

270

LOCALIZED SWITCHING RAMP-METERING CONTROL WITH QUEUE LENGTH ESTIMATION AND  

E-Print Network (OSTI)

LOCALIZED SWITCHING RAMP-METERING CONTROL WITH QUEUE LENGTH ESTIMATION AND REGULATION a localized ramp-metering strategy for freeways that achieves the goal of reducing the spatial and temporal of a switching mainline-traffic responsive ramp-metering controller that adapts to the different traffic dynamics

Horowitz, Roberto

271

Approximating the traffic grooming problem in tree and star networks  

Science Conference Proceedings (OSTI)

We consider the problem of grooming paths in all-optical networks with tree topology so as to minimize the switching cost, measured by the total number of used ADMs. We first present efficient approximation algorithms with approximation factor of 2ln(@d@?g)+o(ln(@d@?g)) ... Keywords: Add-drop multiplexer (ADM), Optical networks, Traffic grooming, Tree networks, Wavelength division multiplexing (WDM)

Michele Flammini; Gianpiero Monaco; Luca Moscardelli; Mordechai Shalom; Shmuel Zaks

2008-07-01T23:59:59.000Z

272

Realistic Multi-Lane Traffic Rules for Cellular Automata  

E-Print Network (OSTI)

A set of lane changing rules for cellular automata simulating multi-lane traffic is proposed. It reproduces qualitatively that the passing lane becomes more crowded than the one for slower cars if the flux is high enough, which is true for motorways in countries like Germany where passing should be done on a specified lane as a rule. The rules have two parameters allowing to adjust the inversion point of the lane usage distribution and to calibrate the model.

Peter Wagner; Kai Nagel; Dietrich E. Wolf

1996-01-01T23:59:59.000Z

273

On many-server queues in heavy traffic  

E-Print Network (OSTI)

We establish a heavy-traffic limit theorem on convergence in distribution for the number of customers in a many-server queue when the number of servers tends to infinity. No critical loading condition is assumed. Generally, the limit process does not have trajectories in the Skorohod space. We give conditions for the convergence to hold in the topology of compact convergence. Some new results for an infinite server are also provided.

Puhalskii, Anatolii A; 10.1214/09-AAP604

2010-01-01T23:59:59.000Z

274

EECEECEECEEC 687/787 Mobile Computing687/787 Mobile Computing687/787 Mobile Computing687/787 Mobile Computing Mobility and TrafficMobility and TrafficMobility and TrafficMobility and Traffic  

E-Print Network (OSTI)

-v 1 -n 20 -p 2.0 -M 10.0 -t 200 -x 500 -y 500 > scen-v1.tcl setdest -v 2 -n 20 -s 1 -m 1 -M 10.0 -t 200 -P 1 -p 2.0 -x 500 -y 500 > scen-v2.tcl 10 cbrgen.tcl A CBR Traffic Generator What is CBR generator ~ns/indep-utils/cmu-scen-gen/cbrgen.tcl Command format ns cbrgen.tcl [-type ##] [-nn ##] [-seed

Yu, Chansu

275

Routing multi-class traffic flows in the plane  

Science Conference Proceedings (OSTI)

We study a class of multi-commodity flow problems in geometric domains: For a given planar domain P populated with obstacles (holes) of K>=2types, compute a set of thick paths from a ''source'' edge of P to a ''sink'' edge of P for vehicles of K distinct ... Keywords: Air traffic management, Approximation algorithms, Geometric maximum flow, Multi-commodity flow, Optimal paths

Joondong Kim; Joseph S. B. Mitchell; Valentin Polishchuk; Shang Yang; Jingyu Zou

2012-04-01T23:59:59.000Z

276

Fundamental diagrams for kinetic equations of traffic flow  

E-Print Network (OSTI)

In this paper we investigate the ability of some recently introduced discrete kinetic models of vehicular traffic to catch, in their large time behavior, typical features of theoretical fundamental diagrams. Specifically, we address the so-called "spatially homogeneous problem" and, in the representative case of an exploratory model, we study the qualitative properties of its solutions for a generic number of discrete microstates. This includes, in particular, asymptotic trends and equilibria, whence fundamental diagrams originate.

Luisa Fermo; Andrea Tosin

2013-05-20T23:59:59.000Z

277

A Learning System for Discriminating Variants of Malicious Network Traffic  

Science Conference Proceedings (OSTI)

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.

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

2013-01-01T23:59:59.000Z

278

Experimental Generation and Characterization of Uniformly Filled Ellipsoidal Electron Beam Distributions  

E-Print Network (OSTI)

Experimental Generation and Characterization of Uniformly Filled Ellipsoidal Electron Beam Distributions

Musumeci, P; Rosenzweig, J B; Scoby, C M

2008-01-01T23:59:59.000Z

279

Non-Uniformities in Thin-Film Cadmium Telluride Solar Cells Using Electroluminescence and Photoluminescence: Preprint  

DOE Green Energy (OSTI)

It is the purpose of this research to develop specific imaging techniques that have the potential to be fast, in-line tools for quality control in thin-film CdTe solar cells. Electroluminescence (EL) and photoluminescence (PL) are two techniques that are currently under investigation on CdTe small area devices made at Colorado State University. It is our hope to significantly advance the understanding of EL and PL measurements as applied to CdTe. Qualitative analysis of defects and non-uniformities is underway on CdTe using EL, PL, and other imaging techniques.

Zaunbrecher, K.; Johnston, S.; Yan, F.; Sites, J.

2011-07-01T23:59:59.000Z

280

Uniform Methods Project for Determining Energy Efficiency Program Savings |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

for Determining Energy Efficiency Program for Determining Energy Efficiency Program Savings Uniform Methods Project for Determining Energy Efficiency Program Savings 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 Sates. They represent a refinement of the body of knowledge supporting energy efficiency evaluation, measurement, and verification (EM&V) activities. They have been written by technical experts within the field and reviewed by industry experts. Read the first set of protocols published April 2013.

Note: This page contains sample records for the topic "uniform traffic control" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Uniform Methods Project Related Links | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Related Links Related Links Uniform Methods Project Related Links The websites and publications listed below provide supporting information for the Uniform Methods Project and for evaluation, measurement, and verification (EM&V) of energy efficiency programs. Glossaries of EM&V Terms Federal EM&V Resources International Resources Related Standards Glossaries of EM&V Terms The following glossaries provide definitions of technical language and EM&V terms. Appendix A: Glossary of Terms, Energy Efficiency Program Impact Evaluation Guide Appendix A has a glossary of EM&V terms; published by the EM&V SEE Action Working Group. Federal EM&V Resources SEE Action Evaluation, Measurement, and Verification Working Group The State and Local Energy Efficiency Action Network (SEE Action)

282

The Uniform Methods Project: Methods for Determining Energy Efficiency  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Electricity Policy Coordination and Implementation » Electricity Policy Coordination and Implementation » State and Regional Policy Assistance » The Uniform Methods Project: Methods for Determining Energy Efficiency Savings for Specific Measures The Uniform Methods Project: Methods for Determining Energy Efficiency Savings for Specific Measures In April 2013 the National Renewable Energy Laboratory (NREL) published the first set of protocols for determining energy savings from energy efficiency measures and programs. Funded by the Office of Electricity Delivery and Energy Reliability and the Office of Energy Efficiency and Renewable Energy, the developed protocols provide a straightforward method for evaluating gross energy savings for each of the most common residential and commercial measures and programs offered by ratepayer-funded energy

283

Electrostatic lens to focus an ion beam to uniform density  

SciTech Connect

A focusing lens for an ion beam having a gaussian or similar density profile is provided. The lens is constructed to provide an inner zero electrostatic field, and an outer electrostatic field such that ions entering this outer field are deflected by an amount that is a function of their distance from the edge of the inner field. The result is a beam that focuses to a uniform density in a manner analogous to that of an optical ring lens. In one embodiment, a conically-shaped network of fine wires is enclosed within a cylindrical anode. The wire net together with the anode produces a voltage field that re-directs the outer particles of the beam while the axial particles pass undeflected through a zero field inside the wire net. The result is a focused beam having a uniform intensity over a given target area and at a given distance from the lens.

Johnson, Cleland H. (Oak Ridge, TN)

1977-01-11T23:59:59.000Z

284

A Thermal Field Theory with Non-uniform Chemical Potential  

E-Print Network (OSTI)

We investigate thermal one-loop effective potentials in multi-flavor models with chemical potentials. We study four-dimensional models in which each flavor have different global U(1) charges. Accordingly they have different chemical potentials. We call these "non-uniform chemical potentials," which are organized into a diagonal matrix \\mu. The mass matrix at a vacuum does not commute with \\mu. We find that the effective potential is divided into three parts. The first part is the Coleman-Weinberg potential. The UV divergence resides only in this part. The second is the correction to the Coleman-Weinberg potential that is independent of temperature, and the third depends on both temperature and \\mu. Our result is a generalization of the thermal potentials in previous studies for models with single and multi-flavors with (uniform) chemical potentials and reproduces all the known results correctly.

Masato Arai; Yoshishige Kobayashi; Shin Sasaki

2013-07-31T23:59:59.000Z

285

Average waiting time profiles of uniform DQDB model  

SciTech Connect

The Distributed Queue Dual Bus (DQDB) system consists of a linear arrangement of N nodes that communicate with each other using two contra-flowing buses; the nodes use an extremely simple protocol to send messages on these buses. This simple, but elegant, system has been found to be very challenging to analyze. We consider a simple and uniform abstraction of this model to highlight the fairness issues in terms of average waiting time. We introduce a new approximation method to analyze the performance of DQDB system in terms of the average waiting time of a node expressed as a function of its position. Our approach abstracts the intimate relationship between the load of the system and its fairness characteristics, and explains all basic behavior profiles of DQDB observed in previous simulation. For the uniform DQDB with equal distance between adjacent nodes, we show that the system operates under three basic behavior profiles and a finite number of their combinations that depend on the load of the network. Consequently, the system is not fair at any load in terms of the average waiting times. In the vicinity of a critical load of 1 {minus} 4/N, the uniform network runs into a state akin to chaos, where its behavior fluctuates from one extreme to the other with a load variation of 2/N. Our analysis is supported by simulation results. We also show that the main theme of the analysis carries over to the general (non-uniform) DQDB; by suitably choosing the inter-node distances, the DQDB can be made fair around some loads, but such system will become unfair as the load changes.

Rao, N.S.V. [Oak Ridge National Lab., TN (United States); Maly, K.; Olariu, S.; Dharanikota, S.; Zhang, L.; Game, D. [Old Dominion Univ., Norfolk, VA (United States). Dept. of Computer Science

1993-09-07T23:59:59.000Z

286

Wave modeling in a cylindrical non-uniform helicon discharge  

Science Conference Proceedings (OSTI)

A radio frequency field solver based on Maxwell's equations and a cold plasma dielectric tensor is employed to describe wave phenomena observed in a cylindrical non-uniform helicon discharge. The experiment is carried out on a recently built linear plasma-material interaction machine: The magnetized plasma interaction experiment [Blackwell et al., Plasma Sources Sci. Technol. (submitted)], in which both plasma density and static magnetic field are functions of axial position. The field strength increases by a factor of 15 from source to target plate, and the plasma density and electron temperature are radially non-uniform. With an enhancement factor of 9.5 to the electron-ion Coulomb collision frequency, a 12% reduction in the antenna radius, and the same other conditions as employed in the experiment, the solver produces axial and radial profiles of wave amplitude and phase that are consistent with measurements. A numerical study on the effects of axial gradient in plasma density and static magnetic field on wave propagations is performed, revealing that the helicon wave has weaker attenuation away from the antenna in a focused field compared to a uniform field. This may be consistent with observations of increased ionization efficiency and plasma production in a non-uniform field. We find that the relationship between plasma density, static magnetic field strength, and axial wavelength agrees well with a simple theory developed previously. A numerical scan of the enhancement factor to the electron-ion Coulomb collision frequency from 1 to 15 shows that the wave amplitude is lowered and the power deposited into the core plasma decreases as the enhancement factor increases, possibly due to the stronger edge heating for higher collision frequencies.

Chang, L.; Hole, M. J.; Caneses, J. F.; Blackwell, B. D.; Corr, C. S. [Plasma Research Laboratory, Research School of Physics and Engineering, Australian National University, Canberra ACT 0200 (Australia); Chen, G. [Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)

2012-08-15T23:59:59.000Z

287

Gravitational lensing in a non-uniform plasma  

E-Print Network (OSTI)

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.

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

2010-06-11T23:59:59.000Z

288

Is LED use in traffic signals viable in the Texas Department of Transportation, Houston District?.  

E-Print Network (OSTI)

??Light Emitting Diode (LED) is used in traffic signals and highway illumination in the Texas Department of Transportation, Houston District (TxDOT). The thesis focuses on… (more)

Ughanze, Ugonna Uzodinma

2012-01-01T23:59:59.000Z

289

Developing Simulation Models of Open Distributed Control System by Using Object-Oriented Structual and Behavioral Patterns  

E-Print Network (OSTI)

An open distributed control system (DCS), which consists of many devices and an open network interconnecting them, is now used in many automation areas. For assuring the control performance under the heavy traffic on the network, the simulation of a DCS is strongly needed. For this purpose, we propose an objectoriented design pattern approach as a uniform, efficient and accurate method of modeling and simulating a DCS. Four design patterns are newly proposed. DeviceConstructor describe classes and mechanisms for uniformly structuring device models composed of many kinds of sensors and actuators. Statechart pattern defines classes and the state-transition execution mechanism for realizing the behavior of sensors and actuators in a device. While Event-Chain pattern defines classes and the event intra-device and inter-device. The systematic implementation procedures from these patterns to the executable Java code of the DCS simulation model are also discussed. Finally, the effectiveness of our approach was proved by developing the Java-based DCS modeler and simulator used in building automation area.

Toyoaki Tomura; Satoshi Kanai; Kiyoshi Uehiro

2001-01-01T23:59:59.000Z

290

Acquisition and registration of aerial video imagery of urban traffic  

SciTech Connect

The amount of information available about urban traffic from aerial video imagery is extremely high. Here we discuss the collection of such video imagery from a helicopter platform with a low-cost sensor, and the post-processing used to correct radial distortion in the data and register it. The radial distortion correction is accomplished using a Harris model. The registration is implemented in a two-step process, using a globally applied polyprojective correction model followed by a fine scale local displacement field adjustment. The resulting cleaned-up data is sufficiently well-registered to allow subsequent straight-forward vehicle tracking.

Loveland, Rohan C [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

291

Predictive models of procedural human supervisory control behavior  

E-Print Network (OSTI)

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 ...

Boussemart, Yves, 1980-

2011-01-01T23:59:59.000Z

292

Binary fish passage models for uniform and nonuniform flows  

Science Conference Proceedings (OSTI)

Binary fish passage models are considered by many fisheries managers to be the best 21 available practice for culvert inventory assessments and for fishway and barrier design. 22 Misunderstandings between different binary passage modeling approaches often arise, 23 however, due to differences in terminology, application and presentation. In this paper 24 one-dimensional binary fish passage models are reviewed and refined to clarify their 25 origins and applications. For uniform flow, a simple exhaustion-threshold (ET) model 26 equation is derived that predicts the flow speed threshold in a fishway or velocity barrier 27 that causes exhaustion at a given maximum distance of ascent. Flow speeds at or above 28 the threshold predict failure to pass (exclusion). Flow speeds below the threshold predict 29 passage. The binary ET model is therefore intuitive and easily applied to predict passage 30 or exclusion. It is also shown to be consistent with the distance-maximizing model. The 31 ET model s limitation to uniform flow is addressed by deriving a passage model that 32 accounts for nonuniform flow conditions more commonly found in the field, including 33 backwater profiles and drawdown curves. Comparison of these models with 34 experimental observations of volitional passage for Gambusia affinis in uniform and 35 nonuniform flows indicates reasonable prediction of binary outcomes (passage or 36 exclusion) if the flow speed is not near the threshold flow velocity. More research is 37 needed on fish behavior, passage strategies under nonuniform flow regimes and 38 stochastic methods that account for individual differences in swimming performance at or 39 near the threshold flow speed. Future experiments should track and measure ground 40 speeds of ascending fish to test nonuniform flow passage strategies and to improve model 41 predictions. Stochastic models, such as Monte-Carlo techniques, that account for 42 different passage performance among individuals and allow prediction of the percentage 43 of fish passing would be particularly useful near flow speed thresholds where binary 44 passage models are clearly limited.

Neary, Vincent S [ORNL

2011-01-01T23:59:59.000Z

293

Controller and computer display interface in an advanced terminal area ATC system  

E-Print Network (OSTI)

Controller and display interactions and information requirements in an advanced Air Traffic Control (ATC) system are investigated. A description of the present ATC system and of some proposed developments for the future ...

Dopart, Kevin Peter

1980-01-01T23:59:59.000Z

294

Illustrating an error in "An equivalent condition for a uniform space to be coverable"  

E-Print Network (OSTI)

Berestovskii and Plaut introduced the concept of a coverable space when developing their theory of generalized universal covering maps for uniform spaces. If a space is coverable and chain connected then it has a generalized universal covering map. Brodskiy, Dydak, LaBuz, and Mitra introduced the concept of a uniformly joinable space when developing a theory of generalized uniform covering maps. It is easy to see that a chain connected coverable space is uniformly joinable. This paper discusses the attempt in Plaut's "An equivalent condition for a uniform space to be coverable" to prove that a uniformly joinable chain connected space is coverable.

Labuz, B

2009-01-01T23:59:59.000Z

295

Uniformly accelerating black holes in a de Sitter universe  

E-Print Network (OSTI)

A class of exact solutions of Einstein's equations is analysed which describes uniformly accelerating charged black holes in an asymptotically de Sitter universe. This is a generalisation of the C-metric which includes a cosmological constant. The physical interpretation of the solutions is facilitated by the introduction of a new coordinate system for de Sitter space which is adapted to accelerating observers in this background. The solutions considered reduce to this form of the de Sitter metric when the mass and charge of the black holes vanish.

J. Podolsky; J. B. Griffiths

2000-10-30T23:59:59.000Z

296

Routing in sparse splitting optical networks with multicast traffic  

Science Conference Proceedings (OSTI)

In this paper, we investigate the problem of Multicast Routing in Sparse Splitting Networks (MR-SSN). Given a network topology with the multicast capable nodes distributed uniformly throughout the network, and a multicast session, the MR-SSN problem ... Keywords: Steiner tree, Tabu search, light splitting, multicast, power issues

Shuguang Yan; Jitender S. Deogun; Maher Ali

2003-01-01T23:59:59.000Z

297

Strategies of developing road transport by controlling automotives' emissions to reduce local and global environment impacts  

Science Conference Proceedings (OSTI)

This research paper presents an overview of policies and methods of controlling the emissions caused by motor vehicles and road traffic to reduce local and global pollution. The main reason is the fact that individual mobility and modern freight transport ... Keywords: emission, engine, environment, modelling, noise, optimisation, pollution, traffic flows

Corneliu Cofaru

2011-02-01T23:59:59.000Z

298

BUCS-TR-2000-017 1 TCP Congestion Control and Heavy Tails  

E-Print Network (OSTI)

BUCS-TR-2000-017 1 TCP Congestion Control and Heavy Tails LIANG GUO MARK CROVELLA IBRAHIM MATTA- ies have shown that there is a close relationship between heavy-tailed distribution of various traffic traffic with heavy-tailed OFF, or idle, periods, and therefore introduces long-range de- pendence

Texas at Arlington, University of

299

Control-theoretic utility maximization in multihop wireless networks under mission dynamics  

Science Conference Proceedings (OSTI)

Both bandwidth and energy become important resource constraints when multihop wireless networks are used to transport high-data-rate traffic for a moderately long duration. In such networks, it is important to control the traffic rates to not only conform ... Keywords: bandwidth- and energy-constrained networks, network lifetime, utility optimization, wireless sensor network (WSN)

Sharanya Eswaran; Archan Misra; Thomas F. La Porta

2012-08-01T23:59:59.000Z

300

Analysis of traffic accident severity using Decision Rules via Decision Trees  

Science Conference Proceedings (OSTI)

A Decision Tree (DT) is a potential method for studying traffic accident severity. One of its main advantages is that Decision Rules (DRs) can be extracted from its structure. And these DRs can be used to identify safety problems and establish certain ... Keywords: Decision Rules, Decision Trees, Road safety, Severity, Traffic accident

JoaquíN AbelláN, Griselda LóPez, Juan De OñA

2013-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "uniform traffic control" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

VBR MPEG Video Traffic Dynamic Prediction Based on the Modeling and Forecast of Time Series  

Science Conference Proceedings (OSTI)

The variable-bit-rate traffic characteristic brings a large complication to the utilization of network resources, especially bandwidth. To solve this problem, this paper proposes a dynamic prediction scheme of MPEG video traffic. We first advance an ... Keywords: MPEG, video trace, forecast, time series, ARMA

Jun Dai; Jun Li

2009-08-01T23:59:59.000Z

302

On performance evaluation of handling streaming traffic in IP networks using TFRC protocol  

Science Conference Proceedings (OSTI)

This paper deals with the performance evaluation of handling streaming traffic in IP best effort networks using TFRC protocol. In our studies we check and discuss an influence of video on demand traffic and different network conditions on TFRC congestion ... Keywords: IP network, TCP-friendly, best-effort, video on demand

Kacper Kurowski; Halina Tarasiuk

2008-05-01T23:59:59.000Z

303

Novel hybrid approach to data-packet-flow prediction for improving network traffic analysis  

Science Conference Proceedings (OSTI)

Forecast of the flow of data packets between client and server for a network traffic analysis is viewed as a part of web analytics. Thousands of web-smart businesses depend on web analytics to improve website conversions, reduce marketing costs, facilitate ... Keywords: Adaptive neuro-fuzzy inference system, Flow of data packets, Network traffic analysis, Nonlinear generalized autoregressive conditional heteroscedasticity, Quantum minimization

Bao Rong Chang; Hsiu Fen Tsai

2009-06-01T23:59:59.000Z

304

Istanbul Strait marine traffic simulation using multiple serially connected machinery concept  

Science Conference Proceedings (OSTI)

Istanbul Strait is one of the most crowded, narrowest straits in the world. Even though the number of accidents has been decreased in recent years, the risk is still high. Simulation of marine traffic in Istanbul Strait is very important to be able to ... Keywords: Istanbul Straits, marine traffic simulation, ship transition simulation

F. Camci; F. Eldemir; O. Uysal; Ilyas Ustun

2009-07-01T23:59:59.000Z

305

A Resource Intensive Traffic-Aware Scheme for Cluster-based Energy Conservation in Wireless Devices  

Science Conference Proceedings (OSTI)

Wireless traffic that is destined for a certain device in a network, can be exploited in order to minimize the availability and delay trade-offs, and mitigate the Energy consumption. The Energy Conservation (EC) mechanism can be node-centric by considering ... Keywords: Energy Conservation, Traffic-aware scheme, End-to-end communication, Capacity consideraiton for Energy Harvesting

Marios C. Charalambous; Constandinos X. Mavromoustakis; Muneer Bani Yassein

2012-06-01T23:59:59.000Z

306

Based on Two Swarm Optimized Algorithm of Neural Network to Prediction the Switch's Traffic of Coal  

Science Conference Proceedings (OSTI)

Coal accurately predict multi-channel network traffic monitoring network for transmission to enhance and improve the QoS is very important, the characteristics of coalmine monitoring network, the first neural network model was constructed, followed by ... Keywords: Coal, network traffic, ant colony algorithm, Particle swarm optimization

Xiao-qiang Shao

2011-07-01T23:59:59.000Z

307

On the Modeling of Traffic and Crowds: A Survey of Models, Speculations, and Perspectives  

Science Conference Proceedings (OSTI)

This paper presents a review and critical analysis of the mathematical literature concerning the modeling of vehicular traffic and crowd phenomena. The survey of models deals with the representation scales and the mathematical frameworks that are used ... Keywords: complexity, crowds and swarm dynamics, living systems, scaling, vehicular traffic

Nicola Bellomo; Christian Dogbe

2011-08-01T23:59:59.000Z

308

A novel approach for traffic accidents sanitary resource allocation based on multi-objective genetic algorithms  

Science Conference Proceedings (OSTI)

The development of communication technologies integrated in vehicles allows creating new protocols and applications to improve assistance in traffic accidents. Combining this technology with intelligent systems will permit to automate most of the decisions ... Keywords: Multi-objective genetic algorithms, Resource allocation, Traffic accidents assistance

Manuel Fogue; Piedad Garrido; Francisco J. Martinez; Juan-Carlos Cano; Carlos T. Calafate; Pietro Manzoni

2013-01-01T23:59:59.000Z

309

Greenhouse Gas Pollution in the Stratosphere Due to Increasing Airplane Traffic, Effects On the Environment  

E-Print Network (OSTI)

Greenhouse Gas Pollution in the Stratosphere Due to Increasing Airplane Traffic, Effects temperatures have increased much more than can be explained by changes in the concentration of greenhouse gases traffic round the clock and around the globe which is contributing to higher concentrations of greenhouse

Murty, Katta G.

310

Flexible, extensible, open-source and affordable FPGA-based traffic generator  

Science Conference Proceedings (OSTI)

As high-speed links become ubiquitous in current networks, testing new algorithms at high speed is essential for researchers. This task often makes it necessary to generate traffic with some specified features : distribution of packet sizes, payload ... Keywords: FPGA, NetFPGA 10G, combo, flexible, open-source, traffic generator

Tristan Groléat; Matthieu Arzel; Sandrine Vaton; Alban Bourge; Yannick Le Balch; Hicham Bougdal; Manuel Aranaz Padron

2013-06-01T23:59:59.000Z

311

Throughput Optimal Scheduling in the presence of Heavy-Tailed Traffic  

E-Print Network (OSTI)

Throughput Optimal Scheduling in the presence of Heavy-Tailed Traffic Krishna Jagannathan, Mihalis of the steady-state queue occupancies under throughput optimal scheduling in the presence of heavy of the queues receives traffic that is heavy-tailed (the "heavy queue"), and the other receives light

Tsitsiklis, John

312

Delay Stability Regions of the Max-Weight Policy under Heavy-Tailed Traffic  

E-Print Network (OSTI)

Delay Stability Regions of the Max-Weight Policy under Heavy-Tailed Traffic Mihalis G. Markakis operated under the Max- Weight scheduling policy, for the case where one of the queues is fed by heavy system exemplifies an intricate phenomenon whereby heavy-tailed traffic at one queue may or may

Tsitsiklis, John

313

Uniform bulk Material Processing using Multimode Microwave Radiation  

DOE Patents (OSTI)

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.

Varma, Ravi; Vaughan, Worth E.

1999-06-18T23:59:59.000Z

314

Uniform bulk material processing using multimode microwave radiation  

DOE Patents (OSTI)

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.

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

2000-01-01T23:59:59.000Z

315

U-134: Apache Traffic Server Host Header Processing Flaw Lets Remote Users  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

4: Apache Traffic Server Host Header Processing Flaw Lets 4: Apache Traffic Server Host Header Processing Flaw Lets Remote Users Deny Service U-134: Apache Traffic Server Host Header Processing Flaw Lets Remote Users Deny Service March 27, 2012 - 7:00am Addthis PROBLEM: Apache Traffic Server Host Header Processing Flaw Lets Remote Users Deny Service PLATFORM: Versions prior to 3.0.4 and 3.1.3 ABSTRACT: A vulnerability was reported in Apache Traffic Server. A remote user can cause denial of service conditions. reference LINKS: SecurityTracker Alert ID: 1026847 CVE-2012-0256 Secunia Advisory SA48509 IMPACT ASSESSMENT: High Discussion: A remote user can send a request with a specially crafted 'Host' header value to trigger a heap allocation error and cause the target service to crash. Impact: A remote user can cause the target service to crash.

316

U-134: Apache Traffic Server Host Header Processing Flaw Lets Remote Users  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

34: Apache Traffic Server Host Header Processing Flaw Lets 34: Apache Traffic Server Host Header Processing Flaw Lets Remote Users Deny Service U-134: Apache Traffic Server Host Header Processing Flaw Lets Remote Users Deny Service March 27, 2012 - 7:00am Addthis PROBLEM: Apache Traffic Server Host Header Processing Flaw Lets Remote Users Deny Service PLATFORM: Versions prior to 3.0.4 and 3.1.3 ABSTRACT: A vulnerability was reported in Apache Traffic Server. A remote user can cause denial of service conditions. reference LINKS: SecurityTracker Alert ID: 1026847 CVE-2012-0256 Secunia Advisory SA48509 IMPACT ASSESSMENT: High Discussion: A remote user can send a request with a specially crafted 'Host' header value to trigger a heap allocation error and cause the target service to crash. Impact: A remote user can cause the target service to crash.

317

A note on uniform interpolation proofs in modal deep inference calculi  

Science Conference Proceedings (OSTI)

This paper answers one rather particular question: how to perform a proof of uniform interpolation property in deep inference calculi for modal logics. We show how to perform a proof of uniform interpolation property in deep inference calculus for the ...

Marta Bílková

2009-09-01T23:59:59.000Z

318

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

E-Print Network (OSTI)

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 ...

Lawler, Clinton T. (Clinton Thomas)

2007-01-01T23:59:59.000Z

319

Uniform-type structures on lattice-valued spaces and frames  

Science Conference Proceedings (OSTI)

By introducing lattice-valued covers of a set, we present a general framework for uniform structures on very general L-valued spaces (for L an integral commutative quantale). By showing, via an intermediate L-valued structure of uniformity, how filters ... Keywords: L-valued space, Axiality, Cover, Entourage, Frame, Galois connection, Girard quantale, Integral commutative quantale, L-valued frame, Locale, Polarity, Quantale, Uniform operator, Uniformity

Javier Gutiérrez García; Iraide Mardones-Pérez; Jorge Picado; María Angeles de Prada Vicente

2008-10-01T23:59:59.000Z

320

Urban traffic flow forecasting using Gauss-SVR with cat mapping, cloud model and PSO hybrid algorithm  

Science Conference Proceedings (OSTI)

In order to improve forecasting accuracy of urban traffic flow, this paper applies support vector regression (SVR) model with Gauss loss function (namely Gauss-SVR) to forecast urban traffic flow. By using the input historical flow data as the validation ... Keywords: Cat mapping, Chaos theory, Cloud model, Particle Swarm Optimization, Support vector regression, Traffic flow forecasting

Ming-Wei Li; Wei-Chiang Hong; Hai-Gui Kang

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "uniform traffic control" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Real-time road traffic forecasting using regime-switching space-time models and adaptive LASSO  

Science Conference Proceedings (OSTI)

Smart transportation technologies require real-time traffic prediction to be both fast and scalable to full urban networks. We discuss a method that is able to meet this challenge while accounting for nonlinear traffic dynamics and space-time dependencies ... Keywords: adaptive LASSO, real-time predictions, threshold regressions, traffic forecasting

Yiannis Kamarianakis; Wei Shen; Laura Wynter

2012-07-01T23:59:59.000Z

322

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

SciTech Connect

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)

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

323

IIR digital filtering of non-uniformly sampled signals via state representation  

Science Conference Proceedings (OSTI)

This article describes a new kind of processing chain based on a non-uniform sampling scheme provided by a level-crossing ADC. The chain implements IIR filters which process directly the non-uniform samples without resampling in a regular scheme. The ... Keywords: IIR filter, Non-uniform sampling, Numerical schemes for ODEs, Stability

L. Fesquet; B. Bidégaray-Fesquet

2010-10-01T23:59:59.000Z

324

Nonequilibrium molecular dynamics simulation of shear viscosity by a uniform momentum source-and-sink scheme  

Science Conference Proceedings (OSTI)

A uniform momentum source-and-sink scheme of nonequilibrium molecular dynamics (NEMD) is developed to calculate the shear viscosity of fluids in this paper. The uniform momentum source and sink are realized by momentum exchanges of individual atoms in ... Keywords: Molecular fluid, Nonequilibrium molecular dynamics, Shear viscosity, Uniform source-and-sink scheme

Bing-Yang Cao; Ruo-Yu Dong

2012-06-01T23:59:59.000Z

325

Fermilab | Traffic Safety at Fermilab | Questions & Answers  

NLE Websites -- All DOE Office Websites (Extended Search)

Questions & Answers Questions & Answers I received an e-mail stating that I have received a traffic citation, but I did not. What do I do? The email I received states that I have five working days after receiving a citation to appeal, what does that mean? I filled out the citation appeal form and submitted it, what happens next? I missed the five day deadline, what do I do now? I lost my appeal and disagree with the results, what do I do now? I lost my appeal and received disciplinary action, what do I do now? I received a citation but did not sign it because I disagreed with the charge and that, without my signature, it would not be considered a valid citation. I received an email saying that it was a violation. Why did this happen? Why should I appeal a citation? Employees never win anyway.

326

Bureau of Construction Codes - 2009 Michigan Uniform Energy Code - Commercial  

NLE Websites -- All DOE Office Websites (Extended Search)

These rules take effect March 9, 2011 (By authority conferred on the director of the department of energy, labor, and economic growth by section 4 of 1972 PA 230, MCL 125.1504, and Executive Reorganization Order Nos. 2003-1 and 2008-20, MCL 445.2011 and MCL 445.2025) R 408.31087, R 408.31088, R 408.31089, and R 408.31090 of the Michigan Administrative Code are amended and R 408.31087a is added to the code as follows: PART 10a MICHIGAN UNIFORM ENERGY CODE R 408.31087 Applicable code. Rule 1087. Rules governing the energy efficiency for the design and construction of buildings and structures, not including residential buildings, shall be those contained in the international energy conservation code, 2009 edition, section 501.1 and the ASHRAE

327

Uniformity of wastewater dispersal using subsurface drip emitters  

E-Print Network (OSTI)

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 tank and subsurface flow constructed wetland. Filtration was accomplished with a small sand filter and screen filter. Results represent a worst-case scenario because the air relief valves were improperly installed and maintenance on the system was lacking. A pressure compensating (PC) emitter (Netafim Bioline 2.30 L/hr) and a pressure dependent (PD) emitter (Aqua-Drip 3.79 L/hr) were evaluated. When new, the PC emitters produced a mean discharge of 2.33 L/hr with a manufacturing coefficient of 0.043. The PD emitters, when new, produced a mean discharge of 4.30 L/hr and a manufacturing coefficient of variation of 0.016. The testing protocol was verified with the collection of data on new emitters. Two individual drip fields contained PC emitters (Netafim Bioline 3.50 L/hr) and PD emitters (Aqua-Drip 2.35 L/hr). The PC emitters were installed in a 200 m continuous length of tubing and the PD emitters were installed with ten individual lines of 15.24 m connected with a supply and return header. Wastewater with an average BOD? of 23 mg/L was applied to two drip fields for 6 years. Emitter flow rates for 313 PC emitters were reduced to a mean discharge of 0.95 L/hr with a coefficient of variation of 0.74 and the 251 PD emitters were reduced to a mean discharge of 1.52 L/hr with a coefficient of variation of 0.35. Two shock chlorination treatments with chlorine concentrations of 500 mg/L and 1000 mg/L were used to increase the emitter's flow rate. Sixty PC and 61 PD emitters were evaluated. The initial average flow rate of the PC emitters was 0.818 L/hr. Average flow rates for the PC emitters increased significantly to 0.859 L/hr and 0.954 L/hr following the 500 mg/L and 1000 mg/L shock chlorination treatments, respectively. The initial flow rate of the PD emitters was 1.54 L/hr. The field flushing cycle represented an increase in flow rate to 1.60 L/hr. The shock chlorination treatments increased the average flow rate to 1.71 L/hr and 1.77 L/hr following the 500 mg/L and 1000 mg/L treatments respectively. All increases in mean discharge were statistically significant. Uniformity and over-application of wastewater were evaluated by analyzing the soil profile on a 1.22 m grid over the entire drain field. Statistical uniformity was 48.1 percent and 71.4 percent for the PC and PD emitters, respectively. The uniformity coefficient resulted in similar results with 70.1 percent for the PC emitters and 85.6 percent for the PD emitters. PC and PD fields caused an over-application of 55.3 percent and 58.5 percent of the field area, respectively.

Persyn, Russell Alan

2000-01-01T23:59:59.000Z

328

Uniformly wound superconducting coil and method of making same  

DOE Patents (OSTI)

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.

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

1994-01-01T23:59:59.000Z

329

Method and apparatus for making uniform pellets for fusion reactors  

DOE Patents (OSTI)

A method and apparatus for making uniform pellets for laser driven fusion reactors which comprises selection of a quantity of glass frit which has been accurately classified as to size within a few micrometers and contains an occluded material, such as urea, which gasifies and expands when heated. The sized particles are introduced into an apparatus which includes a heated vertical tube with temperatures ranging from 800.degree. C to 1300.degree. C. The particles are heated during the drop through the tube to molten condition wherein the occluded material gasifies to form hollow microspheres which stabilize in shape and plunge into a collecting liquid at the bottom of the tube. The apparatus includes the vertical heat resistant tube, heaters for the various zones of the tube and means for introducing the frit and collecting the formed microspheres.

Budrick, Ronald G. (Ann Arbor, MI); King, Frank T. (Hillsboro, OR); Martin, Alfred J. (Ann Arbor, MI); Nolen, Jr., Robert L. (Ann Arbor, MI); Solomon, David E. (Ann Arbor, MI)

1977-01-01T23:59:59.000Z

330

Uniformly wound superconducting coil and method of making same  

DOE Patents (OSTI)

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.

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

1994-03-08T23:59:59.000Z

331

Uniform irradiation of adjustable target spots in high-power laser driver  

Science Conference Proceedings (OSTI)

For smoothing and shaping the on-target laser patterns flexibly in high-power laser drivers, a scheme has been developed that includes a zoom lens array and two-dimensional smoothing by spectral dispersion (SSD). The size of the target pattern can be controlled handily by adjusting the focal length of the zoom lens array, while the profile of the pattern can be shaped by fine tuning the distance between the target and the focal plane of the principal focusing lens. High-frequency stripes inside the pattern caused by beamlet interference are wiped off by spectral dispersion. Detailed simulations indicate that SSD works somewhat differently for spots of different sizes. For small spots, SSD mainly smooths the intensity modulation of low-to-middle spatial frequency, while for large spots, SSD sweeps the fine speckle structure to reduce nonuniformity of middle-to-high frequency. Spatial spectra of the target patterns are given and their uniformity is evaluated.

Jiang Xiujuan; Li Jinghui; Li Huagang; Li Yang; Lin Zunqi

2011-09-20T23:59:59.000Z

332

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

SciTech Connect

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.

Jayaweera, T.; Haeri, H.

2013-04-01T23:59:59.000Z

333

Bureau of Construction Codes - 2009 Michigan Uniform Energy Code - Residential  

NLE Websites -- All DOE Office Websites (Extended Search)

These rules take effect March 9, 2011 (By authority conferred on the director of the department of energy, labor, and economic growth by section 4 of 1972 PA 230, MCL 125.1504, and Executive Reorganization Order Nos. 2003-1 and 2008-20, MCL 445.2011 and MCL 445.2025) R 408.31059, R 408.31060, R 408.31061, R 408.31062, R 408.31063, R 408.31064, R 408.31065, R 408.31066, R 408.31069, and R 408.31070, of the Michigan Administrative Code are amended, and R 408.31060a, R 408.31060b, R 408.31060c, R 408.31060d, R 408.31060e, and R 408.31063a are added to the Code as follows: PART 10 MICHIGAN UNIFORM ENERGY CODE R 408.31059 Applicable code. Rule 1059. The provisions of the international energy conservation code, 2009 edition, except for sections 102.1.1, 107.2 to 107.5, 301.2, 301.3, 402.3.2, 501.1, to 506.6.2 and Tables

334

OFF VUF-2700 FINAL REPORT VELA UNIFORM PROJECT SPONSORED BY  

Office of Legacy Management (LM)

09 09 OFF VUF-2700 FINAL REPORT VELA UNIFORM PROJECT SPONSORED BY THE ADVANCED RESEARCH PROJECTS AGENCY OF THE DEPARTMENT OF DEFENSE AND THE U.S. ATOMIC ENERGY COMMISSION FALLON, NEVADA OCTOBER 26, 1963 Project 9.1 U.s. Army Engineer Waterways Experiment Station James M. Polatty / James E. McDonald Issuance Dates May 1j 1965 IT lAS VEGAS llBiU\Rl LEG A L NOTICE '. ':" This report was prepared as an account or Government eponecred work. Neither the United States, nor the commtseton, nor any pereon acting oabahal! of the Commission: A.Makesany warranty or representation. e.xpressedor implied, with reepect to the accu- racy, completeness,orusefulnes8o! tbeinformaUoncontalned in this report, cr tbst the use of any tntormeucn, appa-ratua, method, or prcceee disclosed in this report may not infringe privately owned rights; or B. Assumes any lIabUitlea wIth respect to the use of.

335

V-201: Cisco Intrusion Prevention System SSP Fragmented Traffic Denial of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

1: Cisco Intrusion Prevention System SSP Fragmented Traffic 1: Cisco Intrusion Prevention System SSP Fragmented Traffic Denial of Service Vulnerability V-201: Cisco Intrusion Prevention System SSP Fragmented Traffic Denial of Service Vulnerability July 19, 2013 - 6:00am Addthis PROBLEM: Several vulnerabilities were reported in Cisco Intrusion Prevention System PLATFORM: Cisco ASA 5500-X Series Adaptive Security Appliances Cisco Intrusion Prevention System (IPS) 7.1 ABSTRACT: A vulnerability in the implementation of the code that processes fragmented traffic could allow an unauthenticated, remote attacker to cause the Analysis Engine process to become unresponsive or cause the affected system to reload. REFERENCE LINKS: Secunia Advisory SA54246 SecurityTracker ID: 1028806 Cisco Advisory ID: cisco-sa-20130717-ips CVE-2013-1218

336

Reducing signaling traffic in wireless ATM networks through handoff scheme improvement  

Science Conference Proceedings (OSTI)

We propose a new handoff call management scheme which reduces signaling traffic in wireless ATM networks and improves the efficiency of the virtual channel. Chaining followed by a make-break algorithm is a suitable handoff scheme for various situations. ...

Anna Ha?; Yongcan Zhang

2002-08-01T23:59:59.000Z

337

Symmetry breaking in optimal timing of traffic signals on an idealized two-way street  

E-Print Network (OSTI)

Simple physical models based on fluid mechanics have long been used to understand the flow of vehicular traffic on freeways; analytically tractable models of flow on an urban grid, however, have not been as extensively explored. In an ideal world, traffic signals would be timed such that consecutive lights turned green just as vehicles arrived, eliminating the need to stop at each block. Unfortunately, this "green wave" scenario is generally unworkable due to frustration imposed by competing demands of traffic moving in different directions. Until now this has typically been resolved by numerical simulation and optimization. Here, we develop a theory for the flow in an idealized system consisting of a long two-way road with periodic intersections. We show that optimal signal timing can be understood analytically and that there are counter-intuitive asymmetric solutions to this signal coordination problem. We further explore how these theoretical solutions degrade as traffic conditions vary and automotive dens...

Panaggio, Mark J; Hu, Peiguang; Abrams, Daniel M

2013-01-01T23:59:59.000Z

338

VTrack: Accurate, energy-aware road traffic delay estimation using mobile phones  

E-Print Network (OSTI)

Traffic delays and congestion are a major source of inefficiency, wasted fuel, and commuter frustration. Measuring and localizing these delays, and routing users around them, is an important step towards reducing the time ...

Thiagarajan, Arvind

339

Guidelines for Funding Operations and Maintenance of Intelligent Transportation Systems/Advanced Traffic Management Systems  

E-Print Network (OSTI)

This paper summarizes the results of that effort, presenting O&M costs for more than 60 ITS elements and a discussion of procedural and institutional barriers related to traffic management O&M in Texas.

Ginger Daniels And; Ginger Daniels; Tim Starr

1997-01-01T23:59:59.000Z

340

Effects of Repeated Compost Topdressing Applications on Turfgrass Quality on Athletic Turf under Traffic.  

E-Print Network (OSTI)

??Moderately maintained soil/native-based sports fields with intensive use, usually present poor soil nutrient status, excessive traffic, and low turfgrass cover. Currently, there is little information… (more)

Munoz, Marcela Paz

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "uniform traffic control" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

An 128Innovative Vehicular Traffic Combined Simulation Tool: From a Detailed Analysis to Comprehensive Results  

Science Conference Proceedings (OSTI)

This paper presents a technologically advanced analysis method to study the urban traffic problem. The integrated approach described here may also provide interesting results for studying particularly extensive and complex situations, while guaranteeing ...

Agostino G. Bruzzone; D. Rivarolo

1996-04-01T23:59:59.000Z

342

Human factors studies of an ADS-B based traffic alerting system for general aviation  

E-Print Network (OSTI)

Several recent high profile mid-air collisions highlight the fact that mid-air collisions are a concern for general aviation. Current traffic alerting systems have limited usability in the airport environment where a ...

Silva, Sathya Samurdhi

2012-01-01T23:59:59.000Z

343

The case for coordination : equity, efficiency and passenger impacts in air traffic flow management  

E-Print Network (OSTI)

In this thesis, we develop multi-resource integer optimization formulations for coordinating Traffic Flow Management (TFM) programs with equity considerations. Our multi-resource approaches ignore aircraft connectivity ...

Fearing, Douglas (Douglas Stephen)

2010-01-01T23:59:59.000Z

344

Modeling safety case evolution – examples from the air traffic management domain  

Science Conference Proceedings (OSTI)

In order realistically and cost-effectively to realize the ATM (Air Traffic Management) 2000+ Strategy, systems from different suppliers will be interconnected to form a complete functional and operational environment, covering ground segments and aerospace. ...

Massimo Felici

2005-09-01T23:59:59.000Z

345

Traffic flow forecasting using a spatio-temporal Bayesian network predictor  

Science Conference Proceedings (OSTI)

A novel predictor for traffic flow forecasting, namely spatiotemporal Bayesian network predictor, is proposed. Unlike existing methods, our approach incorporates all the spatial and temporal information available in a transportation network to carry ...

Shiliang Sun; Changshui Zhang; Yi Zhang

2005-09-01T23:59:59.000Z

346

Conceptual and Scaling Evaluation of Vehicle Traffic Thermal Effects on Snow/Ice-Covered Roads  

Science Conference Proceedings (OSTI)

The potential thermal effects of traffic on road surface thermal energy balance under frost/snow cover conditions have been largely ignored in meteorological evaluations of road ice deposit conditions. Preliminary exploration of these effects, ...

Joseph M. Prusa; Moti Segal; Bradley R. Temeyer; William A. Gallus Jr.; Eugene S. Takle

2002-12-01T23:59:59.000Z

347

Widget:Motion Chart Visualization of OpenEI Traffic Statistics...  

Open Energy Info (EERE)

Motion Chart Visualization of OpenEI Traffic Statistics Jump to: navigation, search Google motion chart (Gapminder): This is the last year of OpenEI analytics for page views, time...

348

On the Improvement From Scheduling a Two-Station Queueing Network in Heavy Traffic  

E-Print Network (OSTI)

For a two-station multiclass queueing network in heavy traffic, we assess the improvement from scheduling (job release and priority sequencing) that can occur relative to Poisson input and first-come first-served (FCFS) ...

Ou, Jihong

349

Multiclass queueing systems in heavy traffic: an asymptotic approach based on distributional and conservation laws  

E-Print Network (OSTI)

We propose a new approach to analyze multiclass queueing systems in heavy traffic based on what we consider as fundamental laws in queueing systems, namely distributional and conservation laws. Methodologically, we extend ...

Bertsimas, Dimitris J.

350

Throughput Optimal Scheduling in the Presence of Heavy-Tailed Traffic  

E-Print Network (OSTI)

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 ...

Jagannathan, Krishna Prasanna

351

Driving segments analysis for energy and environmental impacts of worsening traffic  

E-Print Network (OSTI)

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, ...

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

2007-01-01T23:59:59.000Z

352

Energy efficient Traffic-Aware design of on-off Multi-Layer translucent optical networks  

Science Conference Proceedings (OSTI)

Efficiency in energy consumption is attracting greater and greater attention in recent years to the point that it is becoming one of the major constraints steering the evolution of our society. In addition to developing new low-consumption devices, one ... Keywords: Daily traffic variation, Energy efficiency, Multi-shelf IP-over-WDM network, Rack/shelf power consumption model, Traffic-Aware optical network design

Giuseppe Rizzelli; Annalisa Morea; Massimo Tornatore; Olivier Rival

2012-07-01T23:59:59.000Z

353

Analytical Models for Energy Consumption in Infrastructure WLAN STAs Carrying TCP Traffic  

E-Print Network (OSTI)

We develop analytical models for estimating the energy spent by stations (STAs) in infrastructure WLANs when performing TCP controlled file downloads. We focus on the energy spent in radio communication when the STAs are in the Continuously Active Mode (CAM), or in the static Power Save Mode (PSM). Our approach is to develop accurate models for obtaining the fraction of times the STA radios spend in idling, receiving and transmitting. We discuss two traffic models for each mode of operation: (i) each STA performs one large file download, and (ii) the STAs perform short file transfers. We evaluate the rate of STA energy expenditure with long file downloads, and show that static PSM is worse than just using CAM. For short file downloads we compute the number of file downloads that can be completed with given battery capacity, and show that PSM performs better than CAM for this case. We provide a validation of our analytical models using the NS-2 simulator. In contrast to earlier work on analytical modeling of P...

Agrawal, Pranav; Kuri, Joy; Panda, Manoj; Navda, Vishnu; Ramjee, Ramachandran

2009-01-01T23:59:59.000Z

354

FRIEND: A CYBER-PHYSICAL SYSTEM FOR TRAFFIC FLOW RELATED INFORMATION AGGREGATION AND DISSEMINATION  

E-Print Network (OSTI)

The major contribution of this thesis is to lay the theoretical foundations of FRIEND – A cyber-physical system for traffic Flow-Related Information aggrEgatioN and Dissemination. By integrating resources and capabilities at the nexus between the cyber and physical worlds, FRIEND will contribute to aggregating traffic flow data collected by the huge fleet of vehicles on our roads into a comprehensive, near real-time synopsis of traffic flow conditions. We anticipate providing drivers with a meaningful, color-coded, at-a-glance view of flow conditions ahead, alerting them to congested traffic. FRIEND can be used to provide accurate information about traffic flow and can be used to propagate this information. The workhorse of FRIEND is the ubiquitous lane delimiters (a.k.a. cat’s eyes) on our roadways that, at the moment, are used simply as dumb reflectors. Our main vision is that by endowing cat’s eyes with a modest power source, detection and communication capabilities they will play an important role in collecting, aggregating and disseminating traffic flow conditions to the driving public. We envision the cat’s eyes system to be supplemented by road-side units (RSU) deployed at regular intervals (e.g. every kilometer or so). The RSUs placed on opposite sides of the roadway constitute a logical

Samy S. El-tawab; Stephan Olariu (director; Hussein Abdel-wahab (member; Michele C. Weigle (member; Samy S. El-tawab; Director Dr. Stephan Olariu

2012-01-01T23:59:59.000Z

355

Uniform DT 3T burn: computations and sensitivities  

Science Conference Proceedings (OSTI)

A numerical model was developed in C to integrate the nonlinear deutrium-tritium (DT) burn equations in a three temperature (3T) approximation for spatially uniform test problems relevant to Inertial Confinement Fusion (ICF). Base model results are in excellent agreement with standard 3T results. Data from NDI, SESAME, and TOPS databases is extracted to create fits for the reaction rate parameter, the Planck opacity, and the coupling frequencies of the plasma temperatures. The impact of different fits (e.g., TOPS versus SESAME opacity data, higher order polynomial fits ofNDI data for the reaction rate parameter) were explored, and sensitivity to several model inputs are presented including: opacity data base, Coulomb logarithm, and Bremsstrahlung. Sensitivity to numerical integration time step size, and the relative insensitivity to the discretized numerics and numerical integration method was demonstrated. Variations in the IC for densities and temperatures were explored, showing similar DT burn profiles in most cases once ignition occurs. A coefficient multiplying the Compton coupling term (default, A = 1) can be adjusted to approximate results from more sophisticated models. The coefficient was reset (A = 0.4) to match the maximum temperatures resulting from standard multi-group simulations of the base case test problem. Setting the coefficient to a larger value, (A = 0.6) matches maximum ion temperatures in a kinetic simulation of a high density ICF-like regime. Matching peak temperatures does not match entire temperature-time profiles, indicating the Compton coefficient is density and time dependent as the photon distribution evolves. In the early time burn during the ignition of the DT, the present model with modified Compton coupling provides a very simple method to obtain a much improved match to the more accurate solution from the multi-group radiation model for these DT burn regimes.

Vold, Erik [Los Alamos National Laboratory; Hryniw, Natalia [Los Alamos National Laboratory; Hansen, Jon A [Los Alamos National Laboratory; Kesler, Leigh A [Los Alamos National Laboratory; Li, Frank [Los Alamos National Laboratory

2011-01-27T23:59:59.000Z

356

Distributed feedback control for an eulerian model of the national airspace system  

E-Print Network (OSTI)

This paper proposes an Eulerian model of traffic flows in the National Airspace System (NAS) and presents a distributed feedback control approach for managing the flows. The main contribution is the development of a model ...

Le Ny, Jerome

357

Integrated model-based run-to-run uniformity control for epitaxial silicon deposition.  

E-Print Network (OSTI)

Semiconductor fabrication facilities require an increasingly expensive and integrated set of processes. The bounds on efficiency and repeatability for each process step continue to tighten under the pressure of economic ...

Gower, Aaron E. (Aaron Elwood)

2001-01-01T23:59:59.000Z

358

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

E-Print Network (OSTI)

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 ...

Sandvig, John H.

1994-01-01T23:59:59.000Z

359

The equivalence of uniform and Shapley value-based cost allocations in a specific game  

Science Conference Proceedings (OSTI)

This paper concerns the possible equivalence of the Shapley value and other allocations in specific games. For a group buying game with a linear quantity discount schedule, the uniform allocation results in the same cost allocation as the Shapley value. ... Keywords: Cooperative game, Core, Group buying, Shapley value, Uniform cost allocation

Rachel R. Chen; Shuya Yin

2010-11-01T23:59:59.000Z

360

State-complexity hierarchies of uniform languages of alphabet-size length  

Science Conference Proceedings (OSTI)

We study the state complexity of certain simple languages. If A is an alphabet of k letters, then a k-language is a nonempty set of words of length k, that is, a uniform language of length k. We show that the minimal state complexity of a k-language ... Keywords: Automaton, Bound, Hierarchy, Language, Permutation, State complexity, Tree, Uniform

Janusz Brzozowski; Stavros Konstantinidis

2009-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "uniform traffic control" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Use of multiple 4$pi$ radiation sources for quasi-uniform irradiation of square surfaces  

SciTech Connect

The question of distance and location of multiple 4 pi radiation sources from square planar target surfaces is addressed, with the constraint that the surface be irradiated with 80% uniformity. Results of computer calculations are presented, giving source location coordinates for optimum use of the sources under the uniformity constraint. (auth)

Clark, R.W.; Freiwald, D.A.

1973-11-01T23:59:59.000Z

362

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

E-Print Network (OSTI)

A uniform price auction with locational price adjustments for competitive electricity markets in an electricity context requires that the offers used in the auction reflect the appropriate locational price necessary to adapt the Uniform Price auction to an electricity transmission system which takes into account

363

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

E-Print Network (OSTI)

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.

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

2012-12-14T23:59:59.000Z

364

Placement of Traffic Barriers on Roadside and Median Slopes  

E-Print Network (OSTI)

Cross median crashes have become a serious problem in recent years. Most of the median cross sections used for divided highways have terrains with steep slopes. Traffic barriers, frequently used on slopes, are generally designed based on the findings obtained from crash tests performed on flat terrain. For barriers placed on roadside and median slopes, vehicle impact height varies depending on the trajectory of the vehicle along the ditch section and lateral offset of the barrier. Thus depending on the placement location on a relatively steep slope, a barrier can be impacted by an errant vehicle at height and orientation more critical compared to those considered during its design. Hence, detailed study of performance of barriers on roadside and median slopes is needed to achieve acceptable safety performance. In this study, performances of modified G4(1S) W-beam, Midwest Guardrail System (MGS), modified Thrie-beam, modified weak post W-beam, and box-beam guardrail systems on sloped terrains are investigated using numerical simulations. A procedure is developed that provide guidance for their placement on roadside and median slopes. The research approach consists of nonlinear finite element analyses and multi-rigid-body dynamic analyses approach. Detailed finite element representation for each of the barriers is developed using LS-DYNA. Model fidelity is assessed through comparison of simulated and measured responses reported in full scale crash test studies conducted on flat terrain. LS-DYNA simulations of vehicle impacts on barriers placed on flat terrain at different impact heights are performed to identify performance limits of the barriers in terms of acceptable vehicle impact heights. The performances of the barriers are evaluated following the guidelines provided in NCHRP Report 350. Multi-rigid-body dynamic analysis code, CARSIM, is used to identify trajectories of the vehicles traversing various roadside and median cross-slopes. After analyzing vehicle trajectories and barrier performance limits, a guideline has been prepared with recommendations for the placement of barriers along roadside and median slopes. This guideline is then verified and refined using the responses obtained from full-scale LS-DYNA simulations. These simulations capture the full encroachment event from departure of the vehicle off the traveled way through impact with the barrier.

Ferdous, Md Rubiat

2011-05-01T23:59:59.000Z

365

Intra-cellular traffic: bio-molecular motors on filamentary tracks  

E-Print Network (OSTI)

Molecular motors are macromolecular complexes which use some form of input energy to perform mechanical work. The filamentary tracks, on which these motors move, are made of either proteins (e.g., microtubules) or nucleic acids (DNA or RNA). Often, many such motors move simultaneously on the same track and their collective properties have superficial similarities with vehicular traffic on highways. The models we have developed provide ``unified'' description: in the low-density limit, a model captures the transport properties of a single motor while, at higher densities the same model accounts for the collective spatio-temporal organization of interacting motors. By drawing analogy with vehicular traffic, we have introduced novel quantities for characterizing the nature of the spatio-temporal organization of molecular motors on their tracks. We show how the traffic-like intracellular collective phenomena depend on the mechano-chemistry of the corresponding individual motors.

Debashish Chowdhury; Aakash Basu; Ashok Garai; Philip Greulich; Katsuhiro Nishinari; Andreas Schadschneider; Tripti Tripathi

2008-01-15T23:59:59.000Z

366

U-091: cURL Lets Remote Users Decrypt SSL/TLS Traffic | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

91: cURL Lets Remote Users Decrypt SSL/TLS Traffic 91: cURL Lets Remote Users Decrypt SSL/TLS Traffic U-091: cURL Lets Remote Users Decrypt SSL/TLS Traffic January 30, 2012 - 6:45am Addthis PROBLEM: A vulnerability was reported in cURL. PLATFORM: Linux (Any), UNIX (Any), Windows (Any) : Version(s): 7.10.6 through 7.23.1 ABSTRACT: A remote user can decrypt SSL/TLS sessions in certain cases. reference LINKS: CVE-2011-3389 SecurityTracker Alert ID: 1026587 Vendor Advisory IMPACT ASSESSMENT: Moderate Discussion: A remote user with the ability to conduct a man-in-the-middle attack can decrypt SSL/TLS sessions. The SSL protocol, as used in certain configurations in Microsoft Windows and Microsoft Internet Explorer, Mozilla Firefox, Google Chrome, Opera, and other products, encrypts data by using CBC mode with chained initialization vectors, which allows

367

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

DOE Patents (OSTI)

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.

Weigle, Eric H. (Los Alamos, NM)

2010-08-24T23:59:59.000Z

368

Plenary lecture 1: strategies of developing road transport by controlling automotives' emissions to reduce local and global environment impacts  

Science Conference Proceedings (OSTI)

This research paper presents an overview of policies and methods of controlling the emissions caused by motor vehicles and road traffic to reduce local and global pollution. The main premise is the fact that individual mobility and modern freight transport ...

Corneliu Cofaru

2011-02-01T23:59:59.000Z

369

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

E-Print Network (OSTI)

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 to the neighboring provinces so that the commuters would live closer to their workplaces and thereby alleviate traffic congestion. The main purpose of this research is to examine empirically the effectiveness of JHB in reducing the severity of traffic congestion in the Bangkok Metropolitan Region. For this purpose, three data sets derived from the Bangkok Metropolitan Region Extended City Model (BMR-ECM) were obtained from the Office of the Commission for the Management of Land Traffic and the National Statistical Office of Thailand. Travel time index (TTI) was developed to measure congestion. In addition to JHB, a number of land use variables were included in the analysis. They are population density, school density, and job accessibility index. Multiple regression models of TTI as functions of JHB and other variables were estimated at two geographic scales: subsector and traffic analysis zone (TAZ). The study finds JHB is significant in influencing congestion levels in the Bangkok Metropolitan Region. Other influential factors include the population density, school density, and job accessibility. All of these factors are found to be statistically significant in explaining the variation of traffic congestion at the traffic analysis zone level, but not at the subsector level, however.

Lobyaem, Sonchai

2006-08-01T23:59:59.000Z

370

Summer Transportation Institute Learn what it takes to make traffic flow in a safe and effective way.  

E-Print Network (OSTI)

Summer Transportation Institute Learn what it takes to make traffic flow in a safe and effective how traffic engineers plan and maintain our systems of transportation around the state. · tour engineers from around the state learn what engineers do to make our transportation system work effectively

371

The Entropy Solutions for the Lighthill-Whitham-Richards Traffic Flow Model with a Discontinuous Flow-Density Relationship  

Science Conference Proceedings (OSTI)

In this paper we explicitly construct the entropy solutions for the Lighthill-Whitham-Richards (LWR) traffic flow model with a flow-density relationship which is piecewise quadratic, concave, but not continuous at the junction points where two quadratic ... Keywords: LWR model, WENO scheme, discontinuous flow-density relationship, entropy solution, traffic flow

Yadong Lu; S. C. Wong; Mengping Zhang; Chi-Wang Shu

2009-11-01T23:59:59.000Z

372

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

E-Print Network (OSTI)

: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

Pang, Grantham

373

EuroFGI Workshop on IP QoS and Traffic Control P. Pereira (Ed.)  

E-Print Network (OSTI)

, Resource Broker, UDT. Abstract. Bulk data transfers in Grids require end-to-end performance guarantees to network resources in data Grids. This article investigates network resource sharing in Grids, especially data Grids. The scheduling of advance resource reservations in Grids was proven to be NP

Welzl, Michael

374

Human-centered systems analysis of mixed equipage in ocean air traffic control  

E-Print Network (OSTI)

Technical capabilities for improved communication, surveillance, and navigation (CNS) over the oceans are currently available. However, all aircraft operators will not equip simultaneously because of the high costs required. ...

Major, Laura M. (Laura Mary), 1980-

2005-01-01T23:59:59.000Z

375

Decision Theory for Performance Evaluation of New Technologies Incorporating Institutional Issues: Application to Traffic Control Implementation  

E-Print Network (OSTI)

an easily applied interview technique must integrate theon the interview process and different techniques underthe group interview, some of the techniques did not receive

Mattingly, Stephen P

2000-01-01T23:59:59.000Z

376

Optimal Power Control and SourceChannel Coding for Delay Constrained Traffic over Wireless Channels  

E-Print Network (OSTI)

problem -- the optimal power and rate allocation results in high data rates when the channel gain is high state of the Markov chain that affect the chain's transition probabilities. Each action will incur some, . probability distributions describing state transitions, . functions denoting the reward earned for each action

Goldsmith, Andrea

377

An energy-efficient, transport-controlled MAC protocol for wireless sensor networks  

Science Conference Proceedings (OSTI)

In wireless sensor networks (WSNs), one major cause of wasted energy is that the wireless network interface is always on to accept possible traffic. Many medium access control (MAC) protocols therefore adopted a periodic listen-and-sleep scheme to save ... Keywords: Congestion control, Medium access control, Transport control, Wireless sensor network

Jaesub Kim; Kyu Ho Park

2009-07-01T23:59:59.000Z

378

Battery-State Dependent Power Control as a Dynamic Game  

E-Print Network (OSTI)

1 Battery-State Dependent Power Control as a Dynamic Game Ishai Menache and Eitan Altman Faculty number of mobile users with limited batteries. Whenever the battery drains out, the user pays a fixed price to recharge the battery. Users, assumed to have always traffic to send, control their transmission

379

Model Predictive Control with Repeated Model Fitting for Ramp Metering  

E-Print Network (OSTI)

1 Model Predictive Control with Repeated Model Fitting for Ramp Metering Tom Bellemans, Bart De Schutter, Bart De Moor Abstract--- Ramp metering is a dynamic traffic control measure that has often shown to be very effective. There are several possible methods to determine appropriate ramp metering signals

380

V. Mohammadi, "On the Uniformity of Pure-Boron-Layer Depositions" 1 Abstract--In this paper, the uniformity of PureB-layers  

E-Print Network (OSTI)

on points such as internal/external quantum efficiency, dark current, uniformity and degradation-entrance window. Because of an extremely small penetration depth of the VUV radiation and low-energy electrons of the sample can provide homogeneous exposure, preventing gas depletion phenomena. For a given temperature

Technische Universiteit Delft

Note: This page contains sample records for the topic "uniform traffic control" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
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381

Surface-Layer Fluxes, Profiles, and Turbulence Measurements over Uniform Terrain under Near-Neutral Conditions  

Science Conference Proceedings (OSTI)

An atmospheric surface-layer experiment over a nearly uniform plowed field was performed to determine the constants in the flux-profile similarity formulas, particularly the von Kármán constant. New instruments were constructed to minimize flow ...

Steven P. Oncley; Carl A. Friehe; John C. Larue; Joost A. Businger; Eric C. Itsweire; Sam S. Chang

1996-04-01T23:59:59.000Z

382

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

E-Print Network (OSTI)

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 ...

Swithenbank, Susan B. (Susan Brenda)

2007-01-01T23:59:59.000Z

383

Strategic Behavior and Underpricing in Uniform Price Auctions: Evidence from Finnish Treasury Auctions  

E-Print Network (OSTI)

behavior. d. Reservation price is assumed not to be binding.panels: Average standardized price di?erences. Lower sub-Market Power in Uniform Price Auctions, Review of Financial

Keloharju, Matti; Nyborg, Kjell G.; Rydqvist, Kristian

2004-01-01T23:59:59.000Z

384

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

Science Conference Proceedings (OSTI)

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.

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

385

Lagrangian Solution for an Irrotational Progressive Water Wave Propagating on a Uniform Current  

Science Conference Proceedings (OSTI)

Experiments are conducted to measure the motion properties of water particle for the progressive water wave propagation in the presence of following and adverse uniform currents. The experimental data are used to validate the fifth-order ...

Yang-Yih Chen; Hsuan-Shan Chen; Chu-Yu Lin; Meng-Syue Li

2013-04-01T23:59:59.000Z

386

The Continuous Spectrum in Baroclinic Models with Uniform Potential Vorticity Gradient and Ekman Damping  

Science Conference Proceedings (OSTI)

Analytic solutions of the continuous spectrum are obtained for quasigeostrophic models in which the basic-state meridional potential vorticity (PV) gradient is uniform but nonzero. The modes that form the continuous spectrum—continuum modes—are ...

Hylke de Vries

2009-09-01T23:59:59.000Z

387

Computational Modes and Grid Imprinting on Five Quasi-Uniform Spherical C Grids  

Science Conference Proceedings (OSTI)

Currently, most operational forecasting models use latitude–longitude grids, whose convergence of meridians toward the poles limits parallel scaling. Quasi-uniform grids might avoid this limitation. Thuburn et al. and Ringler et al. have developed ...

Hilary Weller; John Thuburn; Colin J. Cotter

2012-08-01T23:59:59.000Z

388

A Uniform- and Variable-Resolution Stretched-Grid GCM Dynamical Core with Realistic Orography  

Science Conference Proceedings (OSTI)

The impact of introducing a realistic orographic forcing into a uniform- and variable-resolution stretched-grid GCM dynamical core is investigated by performing long-term and medium-range integrations. Comparisons are made between various ...

Michael S. Fox-Rabinovitz; Georgiy L. Stenchikov; Max J. Suarez; Lawrence L. Takacs; Ravi C. Govindaraju

2000-06-01T23:59:59.000Z

389

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

E-Print Network (OSTI)

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 ...

Joumaa, Hady K

2005-01-01T23:59:59.000Z

390

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

DOE Patents (OSTI)

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.

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

2008-09-02T23:59:59.000Z

391

Applications of GridProbe Technology for Traffic Monitoring on High-Capacity Backbone Networks  

E-Print Network (OSTI)

Applications of GridProbe Technology for Traffic Monitoring on High-Capacity Backbone Networks Data for the UKLIGHT international high capacity experimental network. The proposed system will record data flow projects in the e-science framework to enable data collection on core activities on such high speed

Haddadi, Hamed

392

HEAF: a novel estimator for long-range dependent self-similar network traffic  

Science Conference Proceedings (OSTI)

Long-range dependent (LRD) self-similar chaotic behaviour has been found to be present in internet traffic by many researchers. The ‘Hurst exponent', H, is used as a measure of the degree of long-range dependence. A variety of techniques exist ...

Karim Mohammed Rezaul; Algirdas Pakstas; R. Gilchrist; Thomas M. Chen

2006-05-01T23:59:59.000Z

393

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

E-Print Network (OSTI)

, "A micro-scale dispersion model for motor vehicle exhaust gas in urban3 areas--OMG volume. Yoshikawa, and T. Morikawa, "A wind-tunnel study on8 exhaust-gas dispersion from road vehicles­Part II studied). Traffic-induced dispersion increases with higher flows ­ slightly offsetting the9 increased

Bertini, Robert L.

394

A first look at cellular machine-to-machine traffic: large scale measurement and characterization  

Science Conference Proceedings (OSTI)

Cellular network based Machine-to-Machine (M2M) communication is fast becoming a market-changing force for a wide spectrum of businesses and applications such as telematics, smart metering, point-of-sale terminals, and home security and automation systems. ... Keywords: cellular network, machine-to-machine traffic

Muhammad Zubair Shafiq; Lusheng Ji; Alex X. Liu; Jeffrey Pang; Jia Wang

2012-06-01T23:59:59.000Z

395

Pareto-improving and revenue-neutral congestion pricing schemes in two-mode traffic networks  

Science Conference Proceedings (OSTI)

This paper studies a Pareto-improving and revenue-neutral congestion pricing scheme on a simple two-mode (highway and transit) network: this scheme aims at simultaneously improving system performance, making every individual user better off, and having ... Keywords: Congestion pricing, Pareto-improving, Revenue-neutral, Traffic equilibrium, Two-mode network

Yang Liu; Xiaolei Guo; Hai Yang

2009-04-01T23:59:59.000Z

396

The smart tachograph – individual accounting of traffic costs and its implications  

Science Conference Proceedings (OSTI)

Today, several costs caused by road traffic may either be only roughly approximated, or cannot be clearly assigned to the drivers causing them, or both. They are typically distributed evenly among a large fraction of drivers, which is both unfair and ...

Vlad Coroama

2006-05-01T23:59:59.000Z

397

A unified framework for multipath routing for unicast and multicast traffic  

Science Conference Proceedings (OSTI)

We study the problem of load balancing the traffic from a set of unicast and multicast sessions. The problem is formulated as an optimization problem. However, we assume that the gradient of the network cost function is not available and needs to be ... Keywords: mathematical programming/optimization, multipath routing, network measurements

Tuna Güven; Richard J. La; Mark A. Shayman; Bobby Bhattacharjee

2008-10-01T23:59:59.000Z

398

Measurement, Analysis and Modeling of real-time Source Data traffic in Factory Communication Systems  

E-Print Network (OSTI)

In the performance evaluation and design of communication systems for distributed automation systems the almost realistic modeling of the data traffic of automation devices plays a decisive part. Therefore the real-time communication behaviour of a high-grade automated installation in the discrete manufacturing is evaluated. Selected communication requirements are analysed and transferred to a analytic model. This model finally is validated.

Juergen Jasperneite; Peter Neumann

2000-01-01T23:59:59.000Z

399

The effect of multiple entrances on the elevator round trip time under up-peak traffic  

Science Conference Proceedings (OSTI)

The design of vertical transportation systems relies on the calculation of the interval as an indicator of the quality of service. This in turn involves the accurate calculation of the round trip time of a single elevator. The calculation of the round ... Keywords: Basement, Elevator, Interval, Lift, Round trip time, Up peak traffic

Lutfi Al-Sharif

2010-08-01T23:59:59.000Z

400

Oblivious routing for fat-tree based system area networks with uncertain traffic demands  

Science Conference Proceedings (OSTI)

Fat-tree based system area networks have been widely adopted in high performance computing clusters. In such systems, the routing is often deterministic and the traffic demand is usually uncertain and changing. In this paper, we study routing performance ... Keywords: fat-tree, oblivious routing, system area networks

Xin Yuan; Wickus Nienaber; Zhenhai Duan; Rami Melhem

2007-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "uniform traffic control" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Colour vision model-based approach for segmentation of traffic signs  

Science Conference Proceedings (OSTI)

This paper presents a new approach to segment traffic signs from the rest of a scene via CIECAM, a colour appearance model. This approach not only takes CIECAM into practical application for the first time since it was standardised in 1998, but also ...

Xiaohong Gao; Kunbin Hong; Peter Passmore; Lubov Podladchikova; Dmitry Shaposhnikov

2008-01-01T23:59:59.000Z

402

Post-construction evaluation of traffic forecast accuracy Pavithra Parthasarathi , David Levinson  

E-Print Network (OSTI)

Post-construction evaluation of traffic forecast accuracy Pavithra Parthasarathi Ã?, David Levinson: Transportation demand forecasting Project evaluation Forecast accuracy Model evaluation a b s t r a c t This research evaluates the accuracy of demand forecasts using a sample of recently-completed projects

Levinson, David M.

403

Performance Evaluation of Adaptive Ramp-Metering Algorithms Using Microscopic Traffic Simulation Model  

E-Print Network (OSTI)

Performance Evaluation of Adaptive Ramp-Metering Algorithms Using Microscopic Traffic Simulation metering has undergone significant theoretical developments in recent years. However, the applicability been used in an evaluation study of three well-known adaptive ramp-metering algorithms: ALINEA, BOTTLE

Levinson, David M.

404

ASR: anonymous and secure reporting of traffic forwarding activity in mobile ad hoc networks  

Science Conference Proceedings (OSTI)

Nodes forward data on behalf of each other in mobile ad hoc networks. In a civilian application, nodes are assumed to be selfish and rational, i.e., they pursue their own self-interest. Hence, the ability to accurately measure traffic forwarding is critical ... Keywords: Anonymity, MANET, Monitoring, Packet forwarding, Secure link layer acknowledgment, Secure reporting protocol, Security

Heesook Choi; William Enck; Jaesheung Shin; Patrick D. Mcdaniel; Thomas F. Porta

2009-05-01T23:59:59.000Z

405

MEASURING THE IMPACT OF ADDITIONAL RAIL TRAFFIC USING HIGHWAY & RAILROAD METRICS  

E-Print Network (OSTI)

are then illustrated by simulating shared corridor operations with freight and passenger trains. TRANSPORTATION METRICS1 MEASURING THE IMPACT OF ADDITIONAL RAIL TRAFFIC USING HIGHWAY & RAILROAD METRICS Samuel L. Sogin of Illinois Urbana, IL, USA ABSTRACT Long term demand for freight movements in North America is expected

Barkan, Christopher P.L.

406

A review of the applications of agent technology in traffic and transportation systems  

Science Conference Proceedings (OSTI)

The agent computing paradigm is rapidly emerging as one of the powerful technologies for the development of largescale distributed systems to deal with the uncertainty in a dynamic environment. The domain of traffic and transportation systems is well ... Keywords: agents, intelligent transportation systems (ITS), mobile agent systems, multiagent systems (MAS)

Bo Chen; Harry H. Cheng

2010-06-01T23:59:59.000Z

407

Modeling Heavy-tails in Traffic Sources for Network Performance Evaluation  

E-Print Network (OSTI)

1 Modeling Heavy-tails in Traffic Sources for Network Performance Evaluation Vaidyanathan Ramaswami, Kaustubh Jain, Rittwik Jana, Vaneet Aggarwal Abstract--Heavy tails in work loads (file sizes, flow lengths heavy tailed random variables. The fits obtained are validated using separate training and test data

Greenberg, Albert

408

Traffic Congestion Mitigation as an Emissions Reduction Strategy Alexander York Bigazzi  

E-Print Network (OSTI)

, such as electric and gas- electric hybrid vehicles. But travel volume is also a key consideration for the total hydrocarbons and particulate matter), and decreases with the fraction of advanced-drivetrain vehicles assume that traffic congestion mitigation results in reduced vehicle emissions without proper

Bertini, Robert L.

409

Supporting bursty traffic in wireless sensor networks through a distributed advertisement-based TDMA protocol (ATMA)  

Science Conference Proceedings (OSTI)

Nodes in wireless sensor networks (WSNs) are battery powered and oftentimes deployed in remote and hostile locations. Energy conservation is, therefore, one of the primary goals of MAC protocols designed for these networks. Contention-based protocols ... Keywords: Bursty traffic, Data advertisements, Hybrid, MAC protocol, TDMA, WSN

Surjya Ray; Ilker Demirkol; Wendi Heinzelman

2013-05-01T23:59:59.000Z

410

CrashHelp: An Innovation to Improve Traffic Crash Emergency Medical  

E-Print Network (OSTI)

CrashHelp: An Innovation to Improve Traffic Crash Emergency Medical Response! Thomas Horan, Ph, and visualize information? !What existing and emerging technologies could be applied? !What are the best's" of transportation safety (USDOT, 2006) !Education, Engineering, Enforcement, Emergency medical services (EMS) "EMS

Minnesota, University of

411

Design and analysis of multi-level active queue management mechanisms for emergency traffic  

Science Conference Proceedings (OSTI)

Multiple average-multiple threshold (MAMT) active queue management (AQM) is proposed as a solution for providing available and dependable service to traffic from emergency users after disasters. MAMT is a simple but effective approach that can be applied ... Keywords: Active queue management, Emergency services, Quality of service

Manali Joshi; Ajay Mansata; Salil Talauliker; Cory Beard

2005-02-01T23:59:59.000Z

412

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

SciTech Connect

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.

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

1994-10-01T23:59:59.000Z

413

Latency-sensitive power control for wireless ad-hoc networks  

Science Conference Proceedings (OSTI)

We investigate the impact of power control on latency in wireless ad-hoc networks. If transmission power is increased, interference increases, thus reducing network capacity. A node sending/relaying delay-sensitive real-time application traffic can, ... Keywords: ad-hoc networks, latency, medium access control, network connectivity, power control, wireless networks

Mohamed R. Fouad; Sonia Fahmy; Gopal Pandurangan

2005-10-01T23:59:59.000Z

414

Cooled, temperature controlled electrometer  

DOE Patents (OSTI)

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.

Morgan, John P. (Idaho Falls, ID)

1992-01-01T23:59:59.000Z

415

ECR apparatus with magnetic coil for plasma refractive index control  

DOE Patents (OSTI)

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.

Berry, L.A.

1994-04-26T23:59:59.000Z

416

ECR apparatus with magnetic coil for plasma refractive index control  

DOE Patents (OSTI)

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.

Berry, Lee A. (Oak Ridge, TN)

1994-01-01T23:59:59.000Z

417

U-259: RSA BSAFE SSL-C Lets Remote Users Decrypt SSL/TLS Traffic and SSL  

NLE Websites -- All DOE Office Websites (Extended Search)

259: RSA BSAFE SSL-C Lets Remote Users Decrypt SSL/TLS Traffic 259: RSA BSAFE SSL-C Lets Remote Users Decrypt SSL/TLS Traffic and SSL Buffer Overflow Lets Remote Users Execute Arbitrary Code U-259: RSA BSAFE SSL-C Lets Remote Users Decrypt SSL/TLS Traffic and SSL Buffer Overflow Lets Remote Users Execute Arbitrary Code September 13, 2012 - 6:00am Addthis PROBLEM: RSA BSAFE SSL-C Lets Remote Users Decrypt SSL/TLS Traffic and SSL Buffer Overflow Lets Remote Users Execute Arbitrary Code PLATFORM: RSA BSAFE SSL-C prior to 2.8.6 ABSTRACT: RSA BSAFE SSL-C Multiple Vulnerabilities reference LINKS: Secunia Advisory SA50601 SecurityTracker Alert ID: 1027514 SecurityTracker Alert ID: 1027513 CVE-2011-3389 CVE-2012-2110 CVE-2012-2131 IMPACT ASSESSMENT: High Discussion: EMC has acknowledged a weakness and a vulnerability in RSA BSAFE, which can

418

Queue length asymptotics for generalized max-weight scheduling in the presence of heavy-tailed traffic  

E-Print Network (OSTI)

We investigate the asymptotic behavior of the steady-state queue length distribution under generalized max-weight scheduling in the presence of heavy-tailed traffic. We consider a system consisting of two parallel queues, ...

Jagannathan

419

A decision process framework: selecting strategies for rehabilitation of rigid pavements subjected to high traffic volumes  

E-Print Network (OSTI)

Concrete pavements, underdesigned for today's levels of traffic, are deteriorating rapidly. Maintenance, rehabilitation, and reconstruction activities (MRR) have become more widespread and costly. State highway agencies are often being asked to do more MRR work with fewer funds. An improved and comprehensive decision process for selecting the preferred strategy for MRR that considers not only pavement but also traffic and construction issues is needed. Research was conducted to develop a framework for selecting strategies for MRR. The factors, steps, and information involved in the MRR decision process were identified. A decision analysis tool, IDEF0, was used to model the decision process framework. The IDEF0 model is hierarchical in nature (each function is divided into subfunctions) and includes the information flow between the different functions. Data was collected through project case studies and interviews to evaluate and refine the framework. Further research will be necessary to expand the model to a higher level of detail.

Valls, Marc Edouard Josep

2000-01-01T23:59:59.000Z

420

Traffic Management Command, ATTN: MT-INFF, 5611 Columbia Pike, Falls  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

/ 'Vol 52,-No. 212. !/- Tuesday; November 3, -1987 1 Notices.- . / 'Vol 52,-No. 212. !/- Tuesday; November 3, -1987 1 Notices.- . . and responsibility of that company. This is not intented to prevent a carrier from interchanging equipment to allow for the through movement of traffic. Master- leases which do not meet the requirements of a long-term lease or that depend on other documentation and/or subleases to be complete are viewed as trip-leases. DATE: Comments must be received on or before 1 January 1988. ADDRESS: Comments should be addressed to: Headquarters, Military Traffic Management Command, ATTN: MT-INFF, 5611 Columbia Pike, Falls Church, VA 22041-5050. FOR FURTHER INFORMATION CONTACT. Ms. Patricia McCormick, HQMTMC 5611 Columbia Pike, Falls Church, VA 22041- 5050, (202] 756-1887. SUPPLEMENTARY INFORMATION. Master- leases which do not conform to the

Note: This page contains sample records for the topic "uniform traffic control" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Street-based Topological Representations and Analyses for Predicting Traffic Flow in GIS  

E-Print Network (OSTI)

It is well received in the space syntax community that traffic flow is significantly correlated to a morphological property of streets, which are represented by axial lines, forming a so called axial map. The correlation co-efficient (R square value) approaches 0.8 and even a higher value according to the space syntax literature. In this paper, we study the same issue using the Hong Kong street network and the Hong Kong Annual Average Daily Traffic (AADT) datasets, and find surprisingly that street-based topological representations (or street-street topologies) tend to be better representations than the axial map. In other words, vehicle flow is correlated to a morphological property of streets better than that of axial lines. Based on the finding, we suggest the street-based topological representations as an alternative GIS representation, and the topological analyses as a new analytical means for geographic knowledge discovery.

Jiang, Bin

2007-01-01T23:59:59.000Z

422

An integrated model of traffic, geography and economy in the Internet  

E-Print Network (OSTI)

Modeling Internet growth is important both for understanding the current network and to predict and improve its future. To date, Internet models have typically attempted to explain a subset of the following characteristics: network structure, traffic flow, geography, and economy. In this paper we present a discrete, agent-based model, that integrates all of them. We show that the model generates networks with topologies, dynamics, and (more speculatively) spatial distributions that are similar to the Internet.

Holme, Petter; Forrest, Stephanie

2008-01-01T23:59:59.000Z

423

Analysis of a Cellular Automaton Model for Car Traffic with a Slow-to-Stop Rule  

E-Print Network (OSTI)

We propose a modification of the widely known Benjamin-Johnson-Hui (BJH) cellular automaton model for single-lane traffic simulation. In particular, our model includes a ‘slow-to-stop’ rule that exhibits more realistic microscopic driver behaviour than the BJH model. We present some statistics related to fuel economy and pollution generation and show that our model differs greatly in these measures. We give concise results based on extensive simulations using our system.

Adam Clarridge; Kai Salomaa

2009-01-01T23:59:59.000Z

424

Large deviation properties of constant rate data streams sharing a buffer with variable rate cross traffic  

Science Conference Proceedings (OSTI)

We consider a constant rate data stream which shares a buffer with a variable rate data stream. A first come first serve service discipline is applied at the buffer. After service at the first buffer the variable rate traffic leaves the system, whereas ... Keywords: 68M20, 90B15, Markov-modulated fluid sources, fluid model, large buffer asymptotics, many sources asymptotics, on-off sources, primary 60F10, queueing network, secondary 60K25

Kurt Majewski

2008-10-01T23:59:59.000Z

425

Two-Parameter Heavy-Traffic Limits for Infinite-Server Queues  

E-Print Network (OSTI)

In order to obtain Markov heavy-traffic approximations for infinite-server queues with general non-exponential service-time distributions and general arrival processes, possibly with time-varying arrival rates, we establish heavy-traffic limits for two-parameter stochastic processes. We consider the random variables $Q^e(t,y)$ and $Q^r(t,y)$ representing the number of customers in the system at time $t$ that have elapsed service times less than or equal to time $y$, or residual service times strictly greater than $y$. We also consider $W^r(t,y)$ representing the total amount of work in service time remaining to be done at time $t+y$ for customers in the system at time $t$. The two-parameter stochastic-process limits in the space $D([0,\\infty),D)$ of $D$-valued functions in $D$ draw on, and extend, previous heavy-traffic limits by Glynn and Whitt (1991), where the case of discrete service-time distributions was treated, and Krichagina and Puhalskii (1997), where it was shown that the variability of service tim...

Pang, Guodong

2008-01-01T23:59:59.000Z

426

Rationality and Traffic Attraction: Incentives for Honest Path Announcements in BGP  

E-Print Network (OSTI)

We study situations in which autonomous systems (ASes) may have incentives to send BGP announcements differing from the AS-level paths that packets traverse in the data plane. Prior work on this issue assumed that ASes seek only to obtain the best possible outgoing path for their traffic. In reality, other factors can influence a rational AS’s behavior. Here we consider a more natural model, in which an AS is also interested in attracting incoming traffic (e.g., because other ASes pay it to carry their traffic). We ask what combinations of BGP enhancements and restrictions on routing policies can ensure that ASes have no incentive to lie about their data-plane paths. We find that protocols like S-BGP alone are insufficient, but that S-BGP does suffice if coupled with additional (quite unrealistic) restrictions on routing policies. Our game-theoretic analysis illustrates the high cost of ensuring that the ASes honestly announce data-plane paths in their BGP path announcements.

Sharon Goldberg; Shai Halevi; Aaron D. Jaggard; Vijay Ramachandran; Rebecca N. Wright

2008-01-01T23:59:59.000Z

427

Chapter 1, Introduction: The Uniform Methods Project: Methods for Determining Energy Efficiency Savings for Specific Measures  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

: Introduction : Introduction Hossein Haeri, The Cadmus Group, Inc. Subcontract Report NREL/SR-7A30-53827 April 2013 The Uniform Methods Project: Methods for Determining Energy Efficiency Savings for Specific Measures 1 - 1 Chapter 1 - Table of Contents About the Protocols......................................................................................................................... 2 Rationale ......................................................................................................................................... 2 The Audiences and Objectives ........................................................................................................ 3 Definitions....................................................................................................................................... 4

428

Synthse vocale par slection linguistiquement oriente d'units non-uniformes : LiONS  

E-Print Network (OSTI)

Synthèse vocale par sélection linguistiquement orientée d'unités non-uniformes : LiONS Vincent point emploient, en proportions variables, des caractéristiques linguistiques, acoustiques et symbo- liques. Les caractéristiques linguistiques sont directement issues de l'analyse de la langue, tandis que

Dupont, Stéphane

429

Solution of linear problems of the uniform motion of a vortex source in a multilayer fluid  

Science Conference Proceedings (OSTI)

A method of solving linear problems of the uniform motion of a vortex source in a multilayer fluid having an arbitrary finite number of layers is proposed. As an example, the problem of the motion of a vortex source of given intensity in a three-layer fluid is solved. Formulas for the complex velocities and hydrodynamic reactions are obtained.

Gorlov, S.I.

1995-11-01T23:59:59.000Z

430

Homogeneous Quasi-Geostrophic Turbulence Driven by a Uniform Temperature Gradient  

Science Conference Proceedings (OSTI)

Statistically steady states consistent with a horizontally uniform time-averaged temperature gradient in a two-layer quasi-geostrophic model on a beta-plane are found by numerically integrating the equations for deviations from this mean state in ...

Dale B. Haidvogel; Isaac M. Held

1980-12-01T23:59:59.000Z

431

Uniform convergence of Cesàro means of negative order of double Walsh--Fourier series  

Science Conference Proceedings (OSTI)

In this paper we prove that if f ? Cw([0, 1]2) and the function f is bounded partial p- variation for some p ? [1, + ?) then the double Walsh-Fourier series of the function f ... Keywords: Cesàro means, double Walsh-Fourier series, uniform summability

Ushangi Goginava

2003-09-01T23:59:59.000Z

432

Why we need to stick with uniform-price auctions in electricity markets  

Science Conference Proceedings (OSTI)

Arguments that the uniform-price auction yields electricity prices that are systematically too high are incorrect. Tampering with the spot price would cause inefficiency and raise long-term costs. The proper way to dampen the impact of spot price fluctuations is with long-term hedging. (author)

Cramton, Peter; Stoft, Steven

2007-01-15T23:59:59.000Z

433

Non-uniform isentropic gas flow analysis of explosion in fractured solid media  

Science Conference Proceedings (OSTI)

This paper presents a new formulation of non-uniform isentropic gas flow during an explosion in solid media. The present form takes into account additional effects of variations in geometries of voids and crack openings. Variations of mass, density, ... Keywords: Blast, Combined finite/discrete element method, Explosion, Gas-solid interaction

S. Mohammadi; A. Pooladi

2007-04-01T23:59:59.000Z

434

Influence of slurry components on uniformity in copper chemical mechanical planarization  

Science Conference Proceedings (OSTI)

Many researchers studying copper chemical mechanical planarization (CMP) have been focused on mechanisms of copper removal using various chemicals. On the basis of these previous works, we studied the effect of slurry components on uniformity. Chemical ... Keywords: Benzotriazole (BTA), Citric acid, Colloidal silica, Copper CMP, Copper slurry, Hydrogen peroxide, Material removal rate (MRR) profile

Hyunseop Lee; Boumyoung Park; Haedo Jeong

2008-04-01T23:59:59.000Z

435

Dummy feature placement for chemical-mechanical polishing uniformity in a shallow trench isolation process  

Science Conference Proceedings (OSTI)

Manufacturability of a design that is processed with shallow trench isolation (STI) depends on the uniformity of the chemical-mechanical polishing (CMP) step in STI. The CMP step in STI is a dual-material polish, for which all previous studies on dummy ...

Ruiqi Tian; Xiaoping Tang; D. F. Wong

2001-04-01T23:59:59.000Z

436

A Simple Model for the Baroclinic Life Cycle of Meridionally Elongated Eddies in Uniform Shear  

Science Conference Proceedings (OSTI)

A highly simplified model for the wave–mean flow interaction in a baroclinic wave life cycle is derived from the quasigeostrophic two-layer system. The simplification is based on a sheared disturbance embedded in a zonal mean flow with uniform ...

Thomas Frisius

1999-10-01T23:59:59.000Z

437

Method and apparatus for uniformly concentrating solar flux for photovoltaic applications  

DOE Patents (OSTI)

This invention is comprised of a dish reflector and method for concentrating moderate solar flux uniformly on a target plane on a solar cell array, the dish having a stepped reflective surface that is characterized by a plurality of ring-like segments arranged about a common axis, and each segment having a concave spherical configuration.

Jorgensen, G.J.; Carasso, M.; Wendelin, T.J.; Lewandowski, A.A.

1991-12-31T23:59:59.000Z

438

Method and apparatus for uniformly concentrating solar flux for photovoltaic applications  

DOE Patents (OSTI)

This invention is comprised of a dish reflector and method for concentrating moderate solar flux uniformly on a target plane on a solar cell array, the dish having a stepped reflective surface that is characterized by a plurality of ring-like segments arranged about a common axis, and each segment having a concave spherical configuration.

Jorgensen, G.J.; Carasso, M.; Wendelin, T.J.; Lewandowski, A.A.

1991-01-01T23:59:59.000Z

439

Uniform illumination rendering using an array of LEDs: a signal processing perspective  

Science Conference Proceedings (OSTI)

An array of a large number of LEDs will be widely used in future indoor illumination systems. In this paper, we investigate the problem of rendering uniform illumination by a regular LED array on the ceiling of a room. We first present two general results ... Keywords: LED illumination, basic illumination pattern, regular grid, two-dimensional signal processing

Hongming Yang; Jan W. M. Bergmans; Tim C. W. Schenk; Jean-Paul M. G. Linnartz; Ronald Rietman

2009-03-01T23:59:59.000Z

440

Method and apparatus for uniformly concentrating solar flux for photovoltaic applications  

DOE Patents (OSTI)

A dish reflector and method for concentrating moderate solar flux uniformly on a target plane on a solar cell array, the dish having a stepped reflective surface that is characterized by a plurality of ring-like segments arranged about a common axis, and each segment having a concave spherical configuration.

Jorgensen, Gary J. (Pine, CO); Carasso, Meir (Lakewood, CO); Wendelin, Timothy J. (Golden, CO); Lewandowski, Allan A. (Evergreen, CO)

1992-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "uniform traffic control" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

PEER-REVIEW Detection Of Lateral Non-Uniformities In Fluidized Bed Combustors  

E-Print Network (OSTI)

, greatly influences solid circulation patterns and gas phase mixing which inturn affects various in-bed by Dent etal!! in a Fludized bed combustor. For a vertically rising bubble midway through the two sensorsPEER-REVIEW Detection Of Lateral Non-Uniformities In Fluidized Bed Combustors .. A. Venkata Ramayya

Columbia University

442

Uniform CLT for Markov chains with a countable state TSUNG-HSI TSAI  

E-Print Network (OSTI)

) then the uniform CLT holds over F. In the discrete space case, the Borisov-Durst theorem [5, p47] says that for {Xi = j} | X0 = i) . Levental (1990) [12] generalized Durst and Dudley's result (1981) [7] that (a) and (b

Tsai, Tsung-Hsi

443

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

Science Conference Proceedings (OSTI)

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.

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

2011-08-10T23:59:59.000Z

444

Highly uniform step and terrace structures on SiC(0001) surfaces  

Science Conference Proceedings (OSTI)

Highly uniform step and termination structures on 4H- and 6H-SiC(0001) surfaces have been prepared via moderate annealing in disilane. Atomic force microscopy and dark-field low-energy electron microscopy imaging indicate single-phase terminations separated ...

J. Sun; J. B. Hannon; R. M. Tromp; K. Pohl

2011-07-01T23:59:59.000Z

445

The influence of animal mobility on the assumption of uniform distances in aerial line transect surveys  

E-Print Network (OSTI)

for estimating animal density from aerial surveys. Analysis of line transect distance data usually relies test evidence for non- uniformity using double-observer distance data from two aerial surveys of five in Queensland. Key words: aerial surveys, double platform distance sampling, independent observers, responsive

Buckland, Steve

446

Measurements of neutron dose equivalent for a proton therapy center using uniform scanning proton beams  

SciTech Connect

Purpose: Neutron exposure is of concern in proton therapy, and varies with beam delivery technique, nozzle design, and treatment conditions. Uniform scanning is an emerging treatment technique in proton therapy, but neutron exposure for this technique has not been fully studied. The purpose of this study is to investigate the neutron dose equivalent per therapeutic dose, H/D, under various treatment conditions for uniform scanning beams employed at our proton therapy center. Methods: Using a wide energy neutron dose equivalent detector (SWENDI-II, ThermoScientific, MA), the authors measured H/D at 50 cm lateral to the isocenter as a function of proton range, modulation width, beam scanning area, collimated field size, and snout position. They also studied the influence of other factors on neutron dose equivalent, such as aperture material, the presence of a compensator, and measurement locations. They measured H/D for various treatment sites using patient-specific treatment parameters. Finally, they compared H/D values for various beam delivery techniques at various facilities under similar conditions. Results: H/D increased rapidly with proton range and modulation width, varying from about 0.2 mSv/Gy for a 5 cm range and 2 cm modulation width beam to 2.7 mSv/Gy for a 30 cm range and 30 cm modulation width beam when 18 Multiplication-Sign 18 cm{sup 2} uniform scanning beams were used. H/D increased linearly with the beam scanning area, and decreased slowly with aperture size and snout retraction. The presence of a compensator reduced the H/D slightly compared with that without a compensator present. Aperture material and compensator material also have an influence on neutron dose equivalent, but the influence is relatively small. H/D varied from about 0.5 mSv/Gy for a brain tumor treatment to about 3.5 mSv/Gy for a pelvic case. Conclusions: This study presents H/D as a function of various treatment parameters for uniform scanning proton beams. For similar treatment conditions, the H/D value per uncollimated beam size for uniform scanning beams was slightly lower than that from a passive scattering beam and higher than that from a pencil beam scanning beam, within a factor of 2. Minimizing beam scanning area could effectively reduce neutron dose equivalent for uniform scanning beams, down to the level close to pencil beam scanning.

Zheng Yuanshui; Liu Yaxi; Zeidan, Omar; Schreuder, Andries Niek; Keole, Sameer [ProCure Proton Therapy Center, 5901 West Memorial Road, Oklahoma City, Oklahoma 73142 (United States); INTEGRIS Cancer Insititute, 5911 West Memorial Road, Oklahoma City, Oklahoma 73142 (United States); 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)

2012-06-15T23:59:59.000Z

447

Freeway ramp metering often exists in the vicinity of a signal-controlled diamond interchange, at which the surface street system and the free-  

E-Print Network (OSTI)

Freeway ramp metering often exists in the vicinity of a signal-controlled diamond interchange signal and the ramp-metering signal. The proposed control algorithm, including an adaptive diamond inter- change control and a traffic-responsive ramp-metering control were programmed with VISSIM's vehicle

Tian, Zong Z.

448

Consensus of Information in Distributed Control of a Diffusion Process using Centroidal Voronoi Tessellations  

E-Print Network (OSTI)

processes like chemical/radiation leaks, oil spills etc. can have a large impact on human health and natural] and extended to a diffusing and spaying scenario [6]. Actually, the monitoring and control of a diffusion tracking, task assignment, and traffic control [10] [11] [12]. Although a group of mobile actuators

Ren, Wei

449

A Localized Switching Ramp-Metering Controller with a Queue Length Regulator for Congested Freeways  

E-Print Network (OSTI)

A Localized Switching Ramp-Metering Controller with a Queue Length Regulator for Congested Freeways- responsive ramp-metering controller that adapts to the differ- ent traffic dynamics under different the model sampling time and the metering- rate update interval. In addition, a queue length regulator

Horowitz, Roberto

450

Proton beam therapy control system  

DOE Patents (OSTI)

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.

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

451

Proton beam therapy control system  

DOE Patents (OSTI)

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.

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

452

Proton beam therapy control system  

SciTech Connect

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.

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

2013-06-25T23:59:59.000Z

453

Proton beam therapy control system  

SciTech Connect

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.

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

2013-12-03T23:59:59.000Z

454

Analytical solution of the kinetic equation for a uniform plasma in a magnetic field  

SciTech Connect

The kinetic equation for a single-component uniform plasma in a magnetic field is analytically solved by the moment method. The linear system of ordinary differential equations for the moments is decomposed into subsystems of lower dimensions by a geometric method. The eigensystem of each subsystem shows that parallel moments decay monotonically, but perpendicular lth harmonic moments decay while oscillating with the l,l-2,...,-th harmonics of gyrofrequency. A generalization to a multicomponent plasma is discussed.

Ji, Jeong-Young; Held, Eric D. [Department of Physics, Utah State University, Logan, Utah 84322 (United States)

2010-07-15T23:59:59.000Z

455

X10: an object-oriented approach to non-uniform cluster computing  

Science Conference Proceedings (OSTI)

It is now well established that the device scaling predicted by Moore's Law is no longer a viable option for increasing the clock frequency of future uniprocessor systems at the rate that had been sustained during the last two decades. As a result, future ... Keywords: Java, X10, atomic blocks, clocks, data distribution, multithreading, non-uniform cluster computing (NUCC), partitioned global address space (PGAS), places, productivity, scalability

Philippe Charles; Christian Grothoff; Vijay Saraswat; Christopher Donawa; Allan Kielstra; Kemal Ebcioglu; Christoph von Praun; Vivek Sarkar

2005-10-01T23:59:59.000Z

456

Controlling the fluid-fluid mixing-demixing phase transition with electric fields  

E-Print Network (OSTI)

We review recent theoretical advances on controlling the fluid-fluid phase transition with electric fields. Using a mean-field approach, we compare the effects of uniform versus non-uniform electric fields, and show how non-uniform fields are better at altering the phase diagram. Focusing on non-uniform fields, we then discuss the behavior of the fluid concentration profile and the parameters (temperature, fluid concentration, etc.) that control the location of the fluid-fluid interface from both equilibrium and dynamic perspectives.

Jennifer Galanis; Sela Samin; Yoav Tsori

2012-12-06T23:59:59.000Z

457

ECOtality North America  

NLE Websites -- All DOE Office Websites (Extended Search)

MUTCD Manual on Uniform Traffic Control Devices PEV Plug-in Electric Vehicle PHEV Plug-In Hybrid Electric Vehicle U.S. United States Lessons Learned - EVSE Signage Award...

458

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

E-Print Network (OSTI)

The broad objective of this thesis is to explore the potential for the use of Cellular Automata (CA) models to provide a testbed for comparison of different kinetic models of vehicular traffic. We intend to develop a quantitative technique for comparing various kinetic equations that model a given CA-based microscopic model of vehicular traffic. We also plan to apply this technique to two instances of kinetic models, which are differentiated only by their assumptions regarding inter-vehicular correlation and are intended to statistically predict the behavior of ensembles of instances of the underlying CA. We apply different versions of the L? norm as a metric to compare two kinetic models within two scenarios that are representative of typical vehicular traffic problems. The kinetic models are both derived from the same simple CA traffic model, known as CA-184-CC, but they are based on different models of vehicle correlation: the modified vehicular chaos model; and the Nelson and Raney model, an ad-hoc model developed in an earlier paper by P. Nelson and the author. The traffic scenarios are "near-jam," in which a large traffic jam has a high probability of occurring in a particular location; and "pseudo-free-flow," in which vehicles have a high probability of being spaced out from one another enough to allow driving at the maximum desired speed. Results show that the L[distribution][superscript]???[w][subscript] norm produces slightly smaller values for the near-jam scenario and significantly smaller values for the pseudo-free-flow scenario. Also, the L[distribution][superscript]???[w][subscript] norm comparing the CA model to the modified vehicular chaos correlation model is smaller than that of the CA to the Nelson and Raney ad-hoc correlation model, indicating that the modified vehicular chaos model is a better fit to the ensembled CA model.

Raney, Bryan Keith

2000-01-01T23:59:59.000Z

459

Heterogeneous CPU Services Using Differentiated Admission Control  

Science Conference Proceedings (OSTI)

We present an adaptive rate-controlled scheduler for heterogeneous applications running on general purpose computers. Our scheduler can effectively support diverse application requirements. It employs uniform rate-based sharing. Application heterogeneity ... Keywords: CPU scheduling, admission control, firewall protection, multimedia operating system, priority inversion, rate-based sharing

David K. Y. Yau; Bharat Bhargava

2002-07-01T23:59:59.000Z

460

Traffic management: a holistic approach to memory placement on NUMA systems  

Science Conference Proceedings (OSTI)

NUMA systems are characterized by Non-Uniform Memory Access times, where accessing data in a remote node takes longer than a local access. NUMA hardware has been built since the late 80's, and the operating systems designed for it were optimized for ... Keywords: multicore, numa, operating systems, scheduling

Mohammad Dashti; Alexandra Fedorova; Justin Funston; Fabien Gaud; Renaud Lachaize; Baptiste Lepers; Vivien Quema; Mark Roth

2013-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "uniform traffic control" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Highly uniform and reproducible visible to near-infrared vertical-cavity surface-emitting lasers grown by MOVPE  

SciTech Connect

The authors present the growth and characterization of vertical-cavity surface emitting lasers (VCSELs) from visible to near-infrared wavelength grown by metalorganic vapor phase epitaxy. Discussions on the growth issue of VCSEL materials include the control on growth rate and composition using an in situ normal-incidence reflectometer, optimization of ultra-high material uniformity, and comprehensive p- and n-type doping study in AlGaAs by CCl{sub 4} and Si{sub 2}H{sub 6} over the entire Al composition range. They will also demonstrate the recent achievements of selectively-oxidized VCSELs which include the first room-temperature continuous-wave demonstration of all-AlGaAs 700-nm red VCSELs, high-performance n-side up 850-nm VCSELs, and low threshold current and low-threshold voltage 1.06 {micro}m VCSELs using InGaAs/GaAsP strain-compensated quantum wells.

Hou, H.Q.; Choquette, K.D.; Hammons, B.E.; Breiland, W.G.; Crawford, M.H.; Lear, K.L. [Sandia National Labs., Albuquerque, NM (United States). Center for Compound Semiconductors Technology

1997-05-01T23:59:59.000Z

462

Google-Map-Based Online Platform for Arterial Traffic Information and Analysis Yao-Jan Wu, Ph.D. Student (Corresponding Author)  

E-Print Network (OSTI)

Google-Map-Based Online Platform for Arterial Traffic Information and Analysis Yao-Jan Wu, Ph such systems focus on freeways rather than arterials or urban streets. This paper presents a Google networks. Key words: Google maps, arterial, traveler information system, traffic flow map, web technology

Washington at Seattle, University of

463

Modeling and control of thermostatically controlled loads  

SciTech Connect

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.

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

464

A Possible Anisotropy in Blackbody Radiation Viewed through Non-uniform Gaseous Matter  

E-Print Network (OSTI)

A non-local gauge symmetry of a complex scalar field, which can be trivially extended to spinor fields, was demonstrated in a recent paper (Mod.Phys.Lett. A13, 1265 (1998) ; hep-th/9902020). The corresponding covariant Lagrangian density yielded a new, non-local Quantum Electrodynamics. In this letter we show that as a consequence of this new QED, a blackbody radiation viewed through gaseous matter appears to show a slight deviation from the Planck formula, and propose an experimental test to check this effect. We also show that a non-uniformity in this gaseous matter distribution leads to an (apparent) spatial anisotropy in the blackbody radiation.

T K Rai Dastidar

1999-03-12T23:59:59.000Z

465

Adiabatic quantum state transfer in non-uniform triple-quantum-dot system  

E-Print Network (OSTI)

We introduce an adiabatic quantum state transfer scheme in a non-uniform coupled triple-quantum-dot system. By adiabatically varying the external gate voltage applied on the sender and receiver, the electron can be transferred between them with high fidelity. By numerically solving the master equation for a system with always-on interaction, it is indicated that the transfer fidelity depends on the ration between the peak voltage and the maximum coupling constants. The effect of coupling mismatch on the transfer fidelity is also investigated and it is shown that there is a relatively large tolerance range to permit high fidelity quantum state transfer.

Bing Chen; Wei Fan; Yan Xu

2010-10-18T23:59:59.000Z

466

A dispersion relation in bidust acoustic wave in non uniform stratified plasma  

Science Conference Proceedings (OSTI)

Low frequencies waves are studied in plasma with two kind of dusty grains. Also considered are stratified plasma with layers of different densities to that of the main plasma. In this analysis each dust species is treated with a simplified model of fluid equations, and electrons and ions are determined by a Boltzmann factor. Relative velocities between each species and the non uniform plasma is considered in order to study instabilities. In cases in which the speed or the density of current of the charged dust grains is zero, the dispersion equation is recovered.

Valdeblanquez, E. [Ciclo Basico, Departamento de Fisica, Apartado 4011- A 526, Universidad del Zulia, Facultad de Ingenieria, Maracaibo, Edo. Zulia (Venezuela); Centro de Investigacion de Matematicas Aplicadas, CIMA, Apartado 10486, Universidad del Zulia, Facultad de Ingenieria, Maracaibo, Edo. Zulia (Venezuela)

2006-12-04T23:59:59.000Z

467

Adaptive non-uniform B-spline dictionaries on a compact interval  

E-Print Network (OSTI)

Non-uniform B-spline dictionaries on a compact interval are discussed. For each given partition, dictionaries of B-spline functions for the corresponding spline space are constructed. It is asserted that, by dividing the given partition into subpartitions and joining together the bases for the concomitant subspaces, slightly redundant dictionaries of B-splines functions are obtained. Such dictionaries are proved to span the spline space associated to the given partition. The proposed construction is shown to be potentially useful for the purpose of sparse signal representation. With that goal in mind, spline spaces specially adapted to produce a sparse representation of a given signal are considered.

Rebollo-Neira, Laura

2009-01-01T23:59:59.000Z

468

Analysis of form errors in rings of non-uniform cross section due to workholding and machining loads.  

E-Print Network (OSTI)

??This thesis presents a method for the prediction of final peak-to-valley (PTV) surface profile variation for face turning of rings of non-uniform cross section. An… (more)

Golden, Christopher Lee

2008-01-01T23:59:59.000Z

469

A Uniform Space–Time Gridding Algorithm for Comparison of Satellite Data Products: Characterization and Sensitivity Study  

Science Conference Proceedings (OSTI)

To overcome the complexities associated with combining or comparing multisensor data, a statistical gridding algorithm is introduced for projecting data from their unique instrument domain to a uniform space–time domain. The algorithm has two ...

Nadia Smith; W. Paul Menzel; Elisabeth Weisz; Andrew K. Heidinger; Bryan A. Baum

2013-01-01T23:59:59.000Z

470

PART SOl-UNIFORM PATENT POL- ICY FOR RIGHTS IN INVENTIONS MADE  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

PART PART SOl-UNIFORM PATENT POL- ICY FOR RIGHTS IN INVENTIONS MADE BY GOVERNMENT EM- PLOYEES Sec. 501.1 Purpose. 501.2 Scope. 501.3 Definitions. 501.4 Determination of inventions and rights. 501.5 Agency liaison officer. 501.6 Criteria for the determination of rights in and to inventions. 501.7 Agency determination. 501.8 Appeals by employees. 501.9 Patent protection. 501.10 Dissemination of this part and of im- plementing regulations. 501.11 Submissions and inquiries. AUTHORITY: Sec. 4, E.O. 10096, 3 CFR, 1949- 1953 Comp., p. 292, as amended by E.O. 10930, 3 CFR, 1959-1963 Comp., p. 456 and by E.O. 10695, 3 CFR, 1954-1958 Comp., p. 355; DOO 10- 17, July 15, 1992, and DOO 10-18, March 31, 1994. SOURCE: 53 FR 39735, Oct. 11, 1988, unless otherwise noted. § SOLI Purpose. The purpose of this part is to provide for the administration of a uniform patent policy for the Government with respect

471

Lack of uniform trends but increasing spatial variability in observed Indian rainfall extremes  

SciTech Connect

Recent studies disagree on how rainfall extremes over India have changed in space and time over the past half century, as well as on whether the changes observed are due to global warming or regional urbanization. Although a uniform and consistent decrease in moderate rainfall has been reported, a lack of agreement about trends in heavy rainfall may be due in part to differences in the characterization and spatial averaging of extremes. Here we use extreme value theory to examine trends in Indian rainfall over the past half century in the context of long-term, low-frequency variability.We show that when generalized extreme value theory is applied to annual maximum rainfall over India, no statistically significant spatially uniform trends are observed, in agreement with previous studies using different approaches. Furthermore, our space time regression analysis of the return levels points to increasing spatial variability of rainfall extremes over India. Our findings highlight the need for systematic examination of global versus regional drivers of trends in Indian rainfall extremes, and may help to inform flood hazard preparedness and water resource management in the region.

Ghosh, Subimal [ORNL; Das, Debasish [ORNL; Kao, Shih-Chieh [ORNL; Ganguly, Auroop R [ORNL

2012-01-01T23:59:59.000Z

472

System for producing a uniform rubble bed for in-situ processes  

DOE Patents (OSTI)

A method and a cutter are disclosed for producing a large cavity filled with a uniform bed of rubblized oil shale or other material, for in-situ processing. A raise drill head has a hollow body with a generally circular base and sloping upper surface. A hollow shaft extends from the hollow body. Cutter teeth are mounted on the upper surface of the body and relatively small holes are formed in the body between the cutter teeth. Relatively large peripheral flutes around the body allow material to drop below the drill head. A pilot hole is drilled into the oil shale deposit. The pilot hole is reamed into a large diameter hole by means of a large diameter raise drill head or cutter to produce a cavity filled with rubble. A flushing fluid, such as air, is circulated through the pilot hole during the reaming operation to remove fines through the raise drill, thereby removing sufficient material to create sufficient void space, and allowing the larger particles to fill the cavity and provide a uniform bed of rubblized oil shale.

Galloway, T.R.

1981-04-10T23:59:59.000Z

473

Protocol for uniformly measuring and expressing the performance of energy storage systems.  

SciTech Connect

The U.S. Department of Energy's Energy Storage Systems (ESS) Program, through the support of Pacific Northwest National Laboratory (PNNL) and Sandia National Laboratories (SNL), facilitated the development of the protocol provided in this report. The focus of the protocol is to provide a uniform way of measuring, quantifying, and reporting the performance of ESSs in various applications; something that does not exist today and, as such, is hampering the consideration and use of this technology in the market. The availability of an application-specific protocol for use in measuring and expressing performance-related metrics of ESSs will allow technology developers, power-grid operators and other end-users to evaluate the performance of energy storage technologies on a uniform and comparable basis. This will help differentiate technologies and products for specific application(s) and provide transparency in how performance is measured. It also will assist utilities and other consumers of ESSs to make more informed decisions as they consider the potential application and use of ESSs, as well as form the basis for documentation that might be required to justify utility investment in such technologies.

Ferreira, Summer Rhodes; Rose, David Martin; Schoenwald, David Alan; Bray, Kathy [Pacific Northwest National Laboratory, Richland, WA; Conover, David [Pacific Northwest National Laboratory, Richland, WA; Kintner-Meyer, Michael [Pacific Northwest National Laboratory, Richland, WA; Viswanathan, Vilayanur [Pacific Northwest National Laboratory, Richland, WA

2013-08-01T23:59:59.000Z

474

Protocol for Uniformly Measuring and Expressing the Performance of Energy Storage Systems  

Science Conference Proceedings (OSTI)

The U.S. Department of Energy’s Energy Storage Systems (ESS) Program, through the support of Pacific Northwest National Laboratory (PNNL) and Sandia National Laboratories (SNL), facilitated the development of the protocol provided in this report. The focus of the protocol is to provide a uniform way of measuring, quantifying, and reporting the performance of EESs in various applications; something that does not exist today and, as such, is hampering the consideration and use of this technology in the market. The availability of an application-specific protocol for use in measuring and expressing performance-related metrics of ESSs will allow technology developers, power-grid operators and other end-users to evaluate the performance of energy storage technologies on a uniform and comparable basis. This will help differentiate technologies and products for specific application(s) and provide transparency in how performance is measured. It also will assist utilities and other consumers of ESSs make more informed decisions as they consider the potential application and use of ESSs, as well as form the basis for documentation that might be required to justify utility investment in such technologies.

Bray, Kathryn L.; Conover, David R.; Kintner-Meyer, Michael CW; Viswanathan, Vijayganesh; Ferreira, Summer; Rose, David; Schoenwald, David

2012-10-01T23:59:59.000Z

475

DOE uniform reporting system for Federal assistance (grants and cooperative agreements): guidelines  

SciTech Connect

These guidelines establish a uniform reporting system (URS) for grants and cooperative agreements. The purpose is to simplify reporting requirements, standardize reporting, and ensure that no assistance recipient submits more reports than needed to achieve accountability for public funds. This system replaces the many reporting procedures previously imposed by DOE component organizations. Uniform terminology and data elements will minimize ambiguity of meaning and intent. A glossary of terms is provided. A checklist is used to identify all reporting requirements at the time of award. The recipient is encouraged to discuss the requirements before the time of award in order to ensure that they are appropriate. The Guidelines describe planning forms which can be included in the Federal assistance application or proposal to present the planned approach and desired results. Flexibility has been built into the system to ensure that the information requested is relative to the activity performed. A recipient of Federal assistance submits information only once in each reporting period. The reporting system provides recipients with a formal method for identifying problems, including those originated by the Federal government. For purposes of illustration, a hypothetical project - partially funded by DOE under a cooperative agreement - using all the Program Management forms is presented in Part II, Program Management. Part III, Technical Information uses a research grant to illustrate Technical Reporting. Appendix B provides a complete example of the reporting requirements on a research grant.

Not Available

1981-04-01T23:59:59.000Z

476

A Review on Biomass Densification Systems to Develop Uniform Feedstock Commodities for Bioenergy Application  

DOE Green Energy (OSTI)

Developing uniformly formatted, densified feedstock from lignocellulosic biomass is of interest to achieve consistent physical properties like size and shape, bulk and unit density, and durability, which significantly influence storage, transportation and handling characteristics, and, by extension, feedstock cost and quality. A variety of densification systems are considered for producing a uniform format feedstock commodity for bioenergy applications, including (a) baler, (b) pellet mill, (c) cuber, (d) screw extruder, (e) briquette press, (f) roller press, (g) tablet press, and (g) agglomerator. Each of these systems has varying impacts on feedstock chemical and physical properties, and energy consumption. This review discusses the suitability of these densification systems for biomass feedstocks and the impact these systems have on specific energy consumption and end product quality. For example, a briquette press is more flexible in terms of feedstock variables where higher moisture content and larger particles are acceptable for making good quality briquettes; or among different densification systems, a screw press consumes the most energy because it not only compresses but also shears and mixes the material. Pretreatment options like preheating, grinding, steam explosion, torrefaction, and ammonia fiber explosion (AFEX) can also help to reduce specific energy consumption during densification and improve binding characteristics. Binding behavior can also be improved by adding natural binders, such as proteins, or commercial binders, such as lignosulphonates. The quality of the densified biomass for both domestic and international markets is evaluated using PFI (United States Standard) or CEN (European Standard).

Jaya Shankar Tumuluru; Christopher T. Wright; J. Richard Hess; Kevin L. Kenney

2011-11-01T23:59:59.000Z

477

System for producing a uniform rubble bed for in situ processes  

DOE Patents (OSTI)

A method and a cutter for producing a large cavity filled with a uniform bed of rubblized oil shale or other material, for in situ processing. A raise drill head (72) has a hollow body (76) with a generally circular base and sloping upper surface. A hollow shaft (74) extends from the hollow body (76). Cutter teeth (78) are mounted on the upper surface of the body (76) and relatively small holes (77) are formed in the body (76) between the cutter teeth (78). Relatively large peripheral flutes (80) around the body (76) allow material to drop below the drill head (72). A pilot hole is drilled into the oil shale deposit. The pilot hole is reamed into a large diameter hole by means of a large diameter raise drill head or cutter to produce a cavity filled with rubble. A flushing fluid, such as air, is circulated through the pilot hole during the reaming operation to remove fines through the raise drill, thereby removing sufficient material to create sufficient void space, and allowing the larger particles to fill the cavity and provide a uniform bed of rubblized oil shale.

Galloway, Terry R. (Berkeley, CA)

1983-01-01T23:59:59.000Z

478

System for producing a uniform rubble bed for in situ processes  

DOE Patents (OSTI)

A method and a cutter are disclosed for producing a large cavity filled with a uniform bed of rubblized oil shale or other material, for in situ processing. A raise drill head has a hollow body with a generally circular base and sloping upper surface. A hollow shaft extends from the hollow body. Cutter teeth are mounted on the upper surface of the body and relatively small holes are formed in the body between the cutter teeth. Relatively large peripheral flutes around the body allow material to drop below the drill head. A pilot hole is drilled into the oil shale deposit. The pilot hole is reamed into a large diameter hole by means of a large diameter raise drill head or cutter to produce a cavity filled with rubble. A flushing fluid, such as air, is circulated through the pilot hole during the reaming operation to remove fines through the raise drill, thereby removing sufficient material to create sufficient void space, and allowing the larger particles to fill the cavity and provide a uniform bed of rubblized oil shale. 4 figs.

Galloway, T.R.

1983-07-05T23:59:59.000Z

479

Real-time highway traffic condition assessment framework using vehicle-infrastructure integration (VII) with artificial intelligence (AI)  

Science Conference Proceedings (OSTI)

This paper presents a framework for real-time highway traffic condition assessment using vehicle kinetic information, which is likely to be made available from vehicle-infrastructure integration (VII) systems, in which vehicle and infrastructure agents ... Keywords: artificial intelligence (AI), incident detection, vehicle kinetics, vehicle-infrastructure integration (VII)

Yongchang Ma; Mashrur Chowdhury; Adel Sadek; Mansoureh Jeihani

2009-12-01T23:59:59.000Z

480

An empirical study of users' hype cycle based on search traffic: the case study on hybrid cars  

Science Conference Proceedings (OSTI)

Many forms of technology cycle models have been developed and utilized to identify new/convergent technologies and forecast social changes, and among these, the technology hype cycle introduced by Gartner has become established as an effective method ... Keywords: 91, D91, Google trends, Hybrid car, Hype cycle model, Search traffic, Users' hype cycle

Seung-Pyo Jun

2012-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "uniform traffic control" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Sample path large deviations for a family of long-range dependent traffic and associated queue length processes  

Science Conference Proceedings (OSTI)

We consider the long-range dependent cumulative traffic generated by the superposition of constant rate fluid sources having exponentially distributed inter start times and Pareto distributed durations with finite mean and infinite variance. We prove ... Keywords: Fluid source, Pareto distribution, Rate function

Kurt Majewski

2006-01-01T23:59:59.000Z

482

Soil and Crop Response to Power Line Construction Traffic and Shallow and Deep Tillage in New York State  

Science Conference Proceedings (OSTI)

A large percentage of New York State is agricultural land. In many instances, electric transmission lines must be constructed on or across agricultural lands to provide electric service. This study was commissioned by member utilities of the Empire State Electric Energy Research Corporation (ESEERCO) to determine the effect of electric transmission construction traffic on agricultural lands and crops.

1999-09-18T23:59:59.000Z

483

Stability of central finite difference schemes on non-uniform grids for the Black--Scholes equation  

Science Conference Proceedings (OSTI)

This paper deals with stability in the numerical solution of the Black-Scholes partial differential equation. We investigate the semi-discretization on non-uniform grids with central, second-order finite difference schemes. Our stability analysis concerns ... Keywords: 65L05, 65M06, 65M12, 65M20, Black--Scholes partial differential equation, Contractivity, Finite difference schemes, Non-uniform grids, Semi-discretization, Stability

K. J. in 't Hout; K. Volders

2009-10-01T23:59:59.000Z

484

DOE-STD-1155-2002; Transportation and Traffic Management Functional Area Qualification  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DOE-STD-1155-2002 September 2002 DOE STANDARD TRANSPORTATION AND TRAFFIC MANAGEMENT FUNCTIONAL AREA QUALIFICATION STANDARD DOE Defense Nuclear Facilities Technical Personnel U.S. Department of Energy AREA TRNG Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. DOE-STD-1155-2002 This document has been reproduced from the best available copy. Available to DOE and DOE contractors from ES&H Technical Information Services, U.S. Department of Energy, (800) 473-4375, fax: (301) 903-9823. Available to the public from the U.S. Department of Commerce, Technology Administration, National Technical Information Service, Springfield, VA 22161; (703) 605-6000. DOE-STD-1155-2002 i APPROVAL

485

Comparison between Poissonian and Markovian Primary Traffics in Cognitive Radio Networks  

E-Print Network (OSTI)

Cognitive Radio generates a big interest as a key cost-effective solution for the underutilization of frequency spectrum in legacy communication networks. The objective of this work lies in conducting a performance evaluation of the end-to-end message delivery under both Markovian and Poissonian primary traffics in lossy Cognitive Radio networks. We aim at inferring the most appropriate conditions for an efficient secondary service provision according to the Cognitive Radio network characteristics. Meanwhile, we have performed a general analysis for many still open issues in Cognitive Radio, but at the end only two critical aspects have been considered, namely, the unforeseen primary reclaims in addition to the collided cognitive transmissions due to the Opportunistic Spectrum Sharing. Some graphs, in view of the average Spectral Efficiency, have been computed and plotted to report some comparative results for a given video transmission under the Markovian and the Poissonian primary interruptions.

Chaoub, Abdelaali

2012-01-01T23:59:59.000Z

486

Martingale proofs of many-server heavy-traffic limits for Markovian queues  

E-Print Network (OSTI)

This is an expository review paper illustrating the ``martingale method'' for proving many-server heavy-traffic stochastic-process limits for queueing models, supporting diffusion-process approximations. Careful treatment is given to an elementary model -- the classical infinite-server model $M/M/\\infty$, but models with finitely many servers and customer abandonment are also treated. The Markovian stochastic process representing the number of customers in the system is constructed in terms of rate-1 Poisson processes in two ways: (i) through random time changes and (ii) through random thinnings. Associated martingale representations are obtained for these constructions by applying, respectively: (i) optional stopping theorems where the random time changes are the stopping times and (ii) the integration theorem associated with random thinning of a counting process. Convergence to the diffusion process limit for the appropriate sequence of scaled queueing processes is obtained by applying the continuous mappin...

Pang, Guodong; Whitt, Ward

2007-01-01T23:59:59.000Z

487

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

E-Print Network (OSTI)

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-thaw, shrinkage, chemical attack, abrasion resistance, fatigue life, volumetric expansion, practicality, and concrete costs. The assessment discusses material combinations, mixture designs, and construction practices on performance. A computer program using utility decision theory was applied in evaluating the parameters. Promising combinations of the above factors were determined based on the existing knowledge of material combinations used for EOT PCC, coupled with our understanding of the potentials of high performance concrete (HPC) for this type of application.

Shrestha, Pradhumna Babu

1999-01-01T23:59:59.000Z

488

CAGE100: Real-Time Multi-Port Packet Capture System for 100 Gigabit Ethernet Traffic  

SciTech Connect

Future large scale sciences are anticipated to use massive amount of data in their experiments. DOE�¢����s ESnet (Energy Science Network) is developing a 100 Gbps backbone based on this state-of-the-art 100 Gigabit Ethernet standard. ESnet will serve thousands of DOE and non-DOE scientists with its high bandwidth backbone, and connect several national laboratories. Current Ethernet test and debug solutions, such as network traffic capturer/analyzer tools, support up to 10 Gbps speed, and the very few capable of handling 100 Gbps are extremely costly. Such tools are essential in the development of high speed devices and routers, and ultimately the success of 100 Gigabit Ethernet.

Shahin Farrokhnia; Ali Namazi; Babak Azimi-Sadjadi; Chujen Lin

2012-06-14T23:59:59.000Z

489

Delineating the Eddy–Zonal Flow Interaction in the Atmospheric Circulation Response to Climate Forcing: Uniform SST Warming in an Idealized Aquaplanet Model  

Science Conference Proceedings (OSTI)

The mechanisms of the atmospheric response to climate forcing are analyzed using an example of uniform SST warming in an idealized aquaplanet model. A 200-member ensemble of experiments is conducted with an instantaneous uniform SST warming. The ...

Gang Chen; Jian Lu; Lantao Sun

2013-07-01T23:59:59.000Z

490

Transport growth in Bangkok: Energy, environment, and traffic congestion. Workshop proceedings  

Science Conference Proceedings (OSTI)

Bangkok, the capital of Thailand, is a physically and economically complexcity with a complicated transport system. With daily traffic congestion averaging 16 hours, the air quality is such that to breathe street level pollution for 8 eight hours is roughly equivalent to smoking nine cigarettes per day. Estimates suggest idling traffic costs up to $1.6 billion annually. Energy use within the transport sector is on a steady rise with an estimated increase in 11 years of two and one half times. Severe health impacts have begun to effect many residents - young children and the elderly being particularly vulnerable. Bangkok`s air quality and congestion problems are far from hopeless. Great potential exists for Bangkok to remedy its transport-related problems. The city has many necessary characteristics that allow an efficient, economical system of transport. For example, its high density level makes the city a prime candidate for an efficient system of mass transit and the multitude and close proximity of shops, street vendors, restaurants, and residential areas is highly conducive to walking and cycling. Technical knowledge and capacity to devise and implement innovative policies and projects to address air quality and congestion problems is plentiful. There is also consensus among Bangkokians that something needs to be done immediately to clear the air and the roads. However, little has been done. This report proposes a new approach to transport planning for Bangkok that integrates consideration of ecological, social, and financial viability in the process of making decisions regarding managing existing infrastructure and investments in new infrastructure. Selected papers have been indexed separately for inclusion in the Energy Science and Technology Database.

Philpott, J. [Asia Regional Office, Bangkok (Thailand)

1995-07-01T23:59:59.000Z

491

Final Report One-Twelfth-Scale Mixing Experiments to Characterize Double-Shell Tank Slurry Uniformity  

Science Conference Proceedings (OSTI)

The objectives of these 1/12-scale scoping experiments were to ? Determine which of the dimensionless parameters discussed in Bamberger and Liljegren (1994) affect the maximum concentration that can be suspended during jet mixer pump operation in the full-scale double-shell tanks ? Develop empirical correlations to predict the nozzle velocity required for jet mixer pumps to suspend the contents of full-scale double-shell tanks ? Apply the models to predict the nozzle velocity required to suspend the contents of Tank 241 AZ-101 ? Obtain experimental concentration data to compare with the TEMPEST( )(Trent and Eyler 1989) computational modeling predictions to guide further code development ? Analyze the effects of changing nozzle diameter on exit velocity (U0) and U0D0 (the product of the exit velocity and nozzle diameter) required to suspend the contents of a tank. The scoping study experimentally evaluated uniformity in a 1/12-scale experiment varying the Reynolds number, Froude number, and gravitational settling parameter space. The initial matrix specified only tests at 100% U0D0 and 25% U0D0. After initial tests were conducted with small diameter, low viscosity simulant this matrix was revised to allow evaluation of a broader range of U0D0s. The revised matrix included full factorial test between 100% and 50% U0D0 and two half-factorial tests at 75% and 25% U0D0. Adding points at 75% U0D0 and 50% U0D0 allowed evaluation curvature. Eliminating points at 25% U0D0 decreased the testing time by several weeks. Test conditions were achieved by varying the simulant viscosity, the mean particle size, and the jet nozzle exit velocity. Concentration measurements at sampling locations throughout the tank were used to assess the degree of uniformity achieved during each test. Concentration data was obtained using a real time ultrasonic attenuation probe and discrete batch samples. The undissolved solids concentration at these locations was analyzed to determine whether the tank contents were uniform ( ±10% variation about mean) in concentration. Concentration inhomogeneity was modeled as a function of dimensionless groups. The two parameters that best describe the maximum solids volume fraction that can be suspended in a double-shell tank were found to be 1) the Froude number (Fr) based on nozzle velocity (U0) and tank contents level (H) and 2) the dimensionless particle size (dp/D0). The dependence on the Reynolds number (Re) does not appear to be statistically significant.

Bamberger, Judith A.; Liljegren, Lucia M.; Enderlin, Carl W.; Meyer, Perry A.; Greenwood, Margaret S.; Titzler, Pamela A.; Terrones, Guillermo

2007-09-01T23:59:59.000Z

492

Study on Energy-Saving Control Strategy of Idling Stop System for City Bus  

Science Conference Proceedings (OSTI)

Fuel economy of city bus is poor, because the urban traffic is congested, the city bus is constantly in the idle condition resulting in fuel consumption is increasing. In order to improve the vehicle fuel economy and protect environment, the energy consumption ... Keywords: idling stop, energy-saving, control strategy, regenerative braking

Daxing Huang; Ren He

2010-06-01T23:59:59.000Z

493

FINAL REPORT VELA UNIFORM PROJECT SPONSORED BY THE ADVANCED RESEARCH PROJECTS AGENCY OF THE  

Office of Legacy Management (LM)

VUF -1009 VUF -1009 FINAL REPORT - VELA UNIFORM PROJECT SPONSORED BY THE ADVANCED RESEARCH PROJECTS AGENCY OF THE DEPARTMENT OF DEFENSE AND THE U. S. ATOMIC ENERGY COMMl SSlON FALLON, NEVADA OCTOBER 26,1963 FINAL REPORT OF OFF-SITE SURVEILLANCE Southwestern Radiological Health Laboratory September 1, 1964 Issuance Date: November 27, 1964 L E G A L N O T I C E This report war preprred a r an account of Government rponrored work. Neither the Unlted Strtor, nor the Commlerlon, nor m y perron acting on behalf of the Commlrslon: A. Maker any warranty o r reprerentition, exprerred o r Implied, wlth respect to the accu- racy, completanerr, o r urefulners of the lnfornutlon contrlned in thls report, o r that the u r e of any lnformnti~n. apparatur, method, o r procerr dlrclored in thlr report may not infringe

494

Petawatt-laser direct heating of uniformly imploded deuterated-polystyrene shell target  

Science Conference Proceedings (OSTI)

A uniformly imploded deuterated polystyrene (CD) shell target is fast-heated by a Petawatt (PW) laser without cone guide. The best illumination timing is found to be in a narrow region around 80{+-}20 picoseconds from the onset of the stagnation phase, where thermal neutrons are enhanced four to five times by the PW laser of energy less than 10% of the implosion laser. The timing agrees with the timings of enhancement of the x-ray emission from the core and reduction of the bremsstrahlung radiation from scattered hot electrons. The PW laser, focused to the critical density point, generates the energetic electrons within as narrow an angle as 30 deg., which then heats the imploded CD shell to enhance thermal neutrons. These results first demonstrate that the PW laser directly heats the imploded core without any conelike laser guide.

Kitagawa, Yoneyoshi; Akamatsu, Shin; Sakamoto, Wataru; Tanaka, Kazuo A.; Kodama, Ryosuke; Nishimura, Hiroaki; Inubushi, Yuichi; Nakai, Mitsuo; Watari, Takeshi; Norimatsu, Takayoshi; Sunahara, Atsushi [Institute of Laser Engineering, Osaka University, Suita, Osaka 565-0871 (Japan); Sentoku, Yasuhiko [Department of Physics, University of Nevada, Reno, Nevada 89506 (United States)

2005-01-01T23:59:59.000Z

495

Smart Cruise Control.pub  

NLE Websites -- All DOE Office Websites (Extended Search)

Cruise Control: An ITS Application for Improved Cruise Control: An ITS Application for Improved Fuel Economy, Safety, and Traffic Congestion Oak Ridge National Laboratory managed by UT-Battelle, LLC for the U.S. Department of Energy under Contract number DE-AC05-00OR22725 Research Areas Freight Flows Passenger Flows Supply Chain Efficiency Transportation: Energy Environment Safety Security Vehicle Technologies Research Brief T he U.S. Department of Transportation's (DOT's) IntelliDrive Program promises significant advances in safety, mobility and the environment. Some of the greatest challenges in transportation today are associated with reducing fuel consumption and vehicle emissions, improving safety on the roadway, and in increasing the efficiency of use of the highway infrastructure, which is becoming

496

Radiation control standards and procedures  

SciTech Connect

This manual contains the Radiation Control Standards'' and Radiation Control Procedures'' at Hanford Operations which have been established to provide the necessary control radiation exposures within Irradiation Processing Department. Provision is also made for including, in the form of Bulletins'', other radiological information of general interest to IPD personnel. The purpose of the standards is to establish firm radiological limits within which the Irradiation Processing Department will operate, and to outline our radiation control program in sufficient detail to insure uniform and consistent application throughout all IPD facilities. Radiation Control Procedures are intended to prescribe the best method of accomplishing an objective within the limitations of the Radiation Control Standards. A procedure may be changed at any time provided the suggested changes is generally agreeable to management involved, and is consistent with department policies and the Radiation Control Standards.

1956-12-14T23:59:59.000Z

497

Three-electrode low pressure discharge apparatus and method for uniform ionization of gaseous media. [CO/sub 2/ laser oscillator and pulse smoother  

DOE Patents (OSTI)

Uniform, transverse electrical discharges are produced in gaseous media without the necessity of switching the main discharge voltage with an external device which carries the entire discharge current. A three-electrode low pressure discharge tube is charged across its anode and cathode to below breakdown voltage using a dc voltage source. An array of resistors or capacitors can be made to discharge to the wire screen anode by means of a low energy high voltage pulse circuit producing sufficient preionization in the region between the anode and cathode to initiate and control the main discharge. The invention has been demonstrated to be useful as a CO/sub 2/ laser oscillator and pulse-smoother. It can be reliably operated in the sealed-off mode.

McLellan, E.J.

1980-10-17T23:59:59.000Z

498

Traffic of single-headed motor proteins KIF1A: effects of lane changing  

E-Print Network (OSTI)

KIF1A kinesins are single-headed motor proteins which move on cylindrical nano-tubes called microtubules (MT). A normal MT consists of 13 protofilaments on which the equispaced motor binding sites form a periodic array. The collective movement of the kinesins on a MT is, therefore, analogous to vehicular traffic on multi-lane highways where each protofilament is the analogue of a single lane. Does lane-changing increase or decrease the motor flux per lane? We address this fundamental question here by appropriately extending a recent model [{\\it Phys. Rev. E {\\bf 75}, 041905 (2007)}]. By carrying out analytical calculations and computer simulations of this extended model, we predict that the flux per lane can increase or decrease with the increasing rate of lane changing, depending on the concentrations of motors and the rate of hydrolysis of ATP, the ``fuel'' molecules. Our predictions can be tested, in principle, by carrying out {\\it in-vitro} experiments with fluorescently labelled KIF1A molecules.

Debashish Chowdhury; Ashok Garai; Jian-Sheng Wang

2007-12-28T23:59:59.000Z

499

Developing A Safety Culture In A Research And Development Environment: Air Traffic Management Domain  

E-Print Network (OSTI)

Measuring safety climate has been undertaken in many industries (e.g. oil, nuclear, aviation) over the past twenty years, as a proactive method of collecting safety information about the current level of safety in the organisation. However, there has been little work undertaken to develop the safety culture of the designers of these technological systems, to ensure that their designs are endeavouring to reach the highest levels of safety. A tool was developed to measure the current level of safety culture of designers in an air traffic navigation R&D organisation and contains 21 sub-sections under the following four main headings: i) Management Demonstration of Safety; ii) Planning and Organising for Safety; iii) Communication, Trust & Responsibility for Safety and iv) Measuring, Auditing and Reviewing. The findings indicated that the main areas for improvement are: i) the safety management system; ii) team integration; iii) responsibility for safety. Based on the survey findings some changes were undertaken in an attempt to improve the safety culture at the centre and a repeat survey is planned for April, 2005 to assess any improvements. This paper will describe the survey method and findings, the safety improvement plan, preliminary findings from the follow-up survey and lessons learnt during the change process. 1.

Rachael Gordon; Barry Kirwan

2005-01-01T23:59:59.000Z

500

An approach for improving performance of aggregate voice-over-IP traffic  

E-Print Network (OSTI)

The emerging popularity and interest in Voice-over-IP (VoIP) has been accompanied by customer concerns about voice quality over these networks. The lack of an appropriate real-time capable infrastructure in packet networks along with the threats of denial-of service (DoS) attacks can deteriorate the service that these voice calls receive. And these conditions contribute to the decline in call quality in VoIP applications; therefore, error-correcting/concealing techniques remain the only alternative to provide a reasonable protection for VoIP calls against packet losses. Traditionally, each voice call employs its own end-to-end forward-error-correction (FEC) mechanisms. In this paper, we show that when VoIP calls are aggregated over a provider's link, with a suitable linear-time encoding for the aggregated voice traffic, considerable quality improvement can be achieved with little redundancy. We show that it is possible to achieve rates closer to channel capacity as more calls are combined with very small output loss rates even in the presence of significant packet loss rates in the network. The advantages of the proposed scheme far exceed similar or other coding techniques applied to individual voice calls.

Al-Najjar, Camelia

2005-08-01T23:59:59.000Z