WorldWideScience

Sample records for bus priority

  1. Genetic algorithm for optimization in adaptive bus signal priority control

    Directory of Open Access Journals (Sweden)

    Tran Vu TU

    2013-01-01

    Full Text Available This paper firstly proposes an improved genetic algorithm (GA for optimization in adaptive bus signal priority control at signalized intersections. Unlike conventional genetic algorithms with slow convergence speed, this algorithm can increase the convergence speed by utilizing the compensation rule between consecutive signal cycles to narrow new possible generated population spaces. Secondly, the paper would like to present a way to apply the algorithm to a simple adaptive bus signal priority control as well as compare how much the computation time is saved when applying the improved algorithm. Then the research thirdly investigates the efficiency of the proposed algorithm under various flow rate situations. The results show that the improved genetic algorithm can reduce the computation time considerably, by up to 48.39% for the studied case. With high saturation degrees on the cross street, the convergence rate performance of the improved genetic algorithm is significantly good. The figure can be up to 36.2% when compared with the convergence rate of the conventional GA.

  2. Bus Signal Priority Strategy for Isolated Intersection with Far-side Bus Stop%考虑远端停靠站的交叉口公交优先控制方法

    Institute of Scientific and Technical Information of China (English)

    马万经; 谢涵洲

    2011-01-01

    A model to calculate bus delay at intersection with far-side bus stop was first built,then a new bus signal priority control strategy was proposed.The system composed by intersection and far-side bus stop was adopted as control object.A multi-objective model, composed by minimization schedule deviation and minimization average delay of other motor vehicles,was built.Two kinds of buses, "early bus" and "late bus" were considered in the optimization process of the model.Constrains including phase length, queue length,strategy adaptability and degree of saturation of every movements were also considered in the model.The results of a case study show that the efficiency of bus signal priority is affected evidently by the queue at far-side bus stop.It may lead to a larger bus schedule deviation and priority invalidation if the queue at far-side bus stop and bus status are neglected in the signal optimization process.With the proposed model, the above problems can be solved and the pareto-optimal solution can be obtained.%建立了考虑交叉口端停靠站排队的公交到站时间计算模型.在此基础上,提出以交叉口和停靠站构成的系统为对象的信号优先控制总体逻辑和优化模型.模型以公交车辆在出口道停靠站时刻表偏差最小和社会车流延误最小为优化目标,能够响应公交车辆"早到"和"晚点"两种情形,同时考虑了相位长度约束、优先策略适用条件约束、公交停靠站排队长度约束和相位饱和度约束.算例针对不同停靠车辆数下信号优先进行了分析,结果表明,不考虑远端停靠站排队和公交运行状态无条件提供优先,可能导致更大的公交运行时刻表偏移值;缺乏对远端停靠站排队的考虑,可能导致交叉口的信号优先策略失效.而本模型能够较好地解决上述问题,取得信号优先的满意解.

  3. Hybrid fuel cell bus demonstration: advanced technology moves bus forward

    International Nuclear Information System (INIS)

    The Province of Manitoba has been actively pursuing hydrogen since 2001 as one part of a portfolio of renewable energy alternatives. Six priority hydrogen actions have been underway covering a variety of opportunities, including two recently completed major transit bus and refueling demonstrations. A brief overview of Manitoba's activities on hydrogen will be provided, emphasizing the lessons learned from recent projects such as the hydrogen Hybrid Fuel Cell Bus demonstration, and in particular implications for the research community. (author)

  4. BUS 650 UOP Material - bus650dotcom

    OpenAIRE

    lucky108

    2015-01-01

    For more course tutorials visit www.bus650.com BUS 650 Week 1 DQ 1 The Role of Financial Management in a Firm BUS 650 Week 1 DQ 2 Short Term or Long Term View BUS 650 Week 1 Financial Management Challenges BUS 650 Week 2 DQ 1 Initial Investment BUS 650 Week 2 DQ 2 Managing Earnings BUS 650 Week 2 Return on Investment Education Funding BUS 650 Week 3 DQ 1 GAAP vs. IFRS BUS 650 Week 3 DQ 2 Capital Rationing BUS 650 Week 3 Journal Capital Budgeting BUS 650 Week 3 Management of Working Capital Ca...

  5. Discussion on the Central Business District of a City Bus Priority Traffic Planning%城市中心商业区公交优先的交通规划的探讨

    Institute of Scientific and Technical Information of China (English)

    刘维彬; 祖宇聪

    2013-01-01

    bus priority is a system engineering, it relates to the transformation of city traffic development strategy and system of the existing mechanism of city planning, and the concept of people, and it is not just a bus and taxi in the way of use preference, but the vast majority of people in the priority traffic. The most important is, in the"three factors of human, vehicle, road traffic management", in the limited road conditions to solve the smooth road and vehicle growth problem, we should fol ow the principle of people-oriented, considering that most people travel convenience.%  公交优先是一个系统的工程,它涉及到城市总体规划、城市交通发展战略和现行的体制机制及人们观念的转变,而且它不仅仅是指公交车和出租车在路权使用上的优先,而是指绝大多数人在交通出行方面的优先。最重要的是,在“人、车、路”交通管理的三要素当中,要在有限的道路条件下解决好道路通畅和车辆增长的问题,我们要遵循以人为本的原则,考虑到多数人出行方便的情况。

  6. BUS 372 ASH Material - bus372dotcom

    OpenAIRE

    lucky108

    2015-01-01

    For more course tutorials visit www.bus372.com       BUS 372 Week 1 DQ 1 The Role of Unionization (Ash Course) BUS 372 Week 1 DQ 2 Meeting Member Needs (Ash Course) BUS 372 Week 2 DQ 1 Profit Interest and Employee Interest (Ash Course) BUS 372 Week 2 DQ 2 Union Requirements (Ash Course) BUS 372 Week 2 Assignment Changing Landscape of Unions (Ash Course) BUS 372 Week 2 Quiz (Ash Course) BUS 372 Week 3 DQ 1 Strikes (Ash Course) BUS ...

  7. BUS 372 Tutorials / bus372dotcom

    OpenAIRE

    sunshine3811

    2015-01-01

    For more course tutorials visit www.bus372.com       BUS 372 Week 1 DQ 1 The Role of Unionization (Ash Course) BUS 372 Week 1 DQ 2 Meeting Member Needs (Ash Course) BUS 372 Week 2 DQ 1 Profit Interest and Employee Interest (Ash Course) BUS 372 Week 2 DQ 2 Union Requirements (Ash Course) BUS 372 Week 2 Assignment Changing Landscape of Unions (Ash Course) BUS 372 Week 2 Quiz (Ash Course) BUS 372 Week 3 DQ 1 Strikes (Ash Course) BUS ...

  8. A new bus lane on urban expressway with no-bay bus stop

    Science.gov (United States)

    Tian, Zhao; Jia, Limin

    2016-01-01

    The sharp increase in residents and vehicles causes heavy traffic pressure in many cities. To ease traffic congestion, it has been the common sense that we should develop public transit system. The priority of the bus appears particularly necessary with the rapid development of the public transport system. The bus lane is an important embodiment of the bus priority. Focusing on the problem of the unreasonable dedicated bus lane (DBL) under the lower ratio of buses, this paper proposed a new bus lane with limited physical length. And this bus lane can reduce the lane-changing conflict caused by the buses and cars running on roads without bus lanes. Based on the cellular automata (CA) traffic flow model and the lane-changing behavior of the vehicle including the optional lane-changing and the mandatory lane-changing, a three-lane traffic model with an isolated no-bay bus stop is proposed. The ordinary three-lane traffic without a bus lane and the cases of traffic with a DBL or the proposed bus lane are simulated, and the comparisons in the form of the fundamental diagrams are made among them. It is shown that the no-bay bus stop can act as a bottleneck on the traffic flow because of the mandatory lane-changing behavior. Under a certain ratio of the bus number to the total vehicles number, (1) the traffic with the proposed bus lane has less lane-changing conflict and can provide higher traffic capacity than the ordinary traffic without a bus lane, (2) compared with the DBL, the proposed bus lane is advantageous in easing congestion on the ordinary lanes when the traffic flow is high and can avoid unreasonable allocation of the road resources.

  9. BUS 401 Courses / bus401tutorialdotcom

    OpenAIRE

    uophelp

    2015-01-01

     FOR MORE CLASSES VISIT www.bus401tutorial.com BUS 401 Week 1 DQ 1 Corporate Income Tax and Real Interest Rates (Ash Course) BUS 401 Week 1 DQ 2 Cash Flow and Ratio Analysis (Ash Course)  BUS 401 Week 1 Assignment Ratio Analysis (Ash Course) BUS 401 Week 1 Quiz (Ash Course) BUS 401 Week 2 DQ 1 Annuity and Capital Asset Pricing (Ash Course) BUS 401 Week 2 DQ 2 Bonds and Common Stock (Ash Course) BUS 401 Week 2 Assignment Alternative Investments (Ash Co...

  10. BUS 401 COURSES / bus401tutordotcom

    OpenAIRE

    uophelp

    2015-01-01

    FOR MORE CLASSES VISIT www.bus401tutor.com   BUS 401 Week 1 DQ 1 Corporate Income Tax and Real Interest Rates (Ash Course) BUS 401 Week 1 DQ 2 Cash Flow and Ratio Analysis (Ash Course)  BUS 401 Week 1 Assignment Ratio Analysis (Ash Course) BUS 401 Week 1 Quiz (Ash Course) BUS 401 Week 2 DQ 1 Annuity and Capital Asset Pricing (Ash Course) BUS 401 Week 2 DQ 2 Bonds and Common Stock (Ash Course) BUS 401 Week 2 Assignment Alternative Investments (Ash ...

  11. High-Speed Ring Bus

    Science.gov (United States)

    Wysocky, Terry; Kopf, Edward, Jr.; Katanyoutananti, Sunant; Steiner, Carl; Balian, Harry

    2010-01-01

    is no centralized arbitration or bus granting. The JPL design provides for autonomous synchronization of the nodes on the ring bus. An address-synchronous latency adjust buffer (LAB) has been designed that cannot get out of synchronization and needs no external input. Also, a priority-driven cable selection behavior has been programmed into each unit on the ring bus. This makes the bus able to connect itself up, according to a maximum redundancy priority system, without the need for computer intervention at startup. Switching around a failed or switched-off unit is also autonomous. The JPL bus provides a map of all the active units for the host computer to read and use for fault management. With regard to timing, this enhanced bus recognizes coordinated timing on a spacecraft as critical and addresses this with a single source of absolute and relative time, which is broadcast to all units on the bus with synchronization maintained to the tens of nanoseconds. Each BIU consists of up to five programmable triggers, which may be programmed for synchronization of events within the spacecraft of instrument. All JPL-formatted data transmitted on the ring bus are automatically time-stamped.

  12. BUS 660 ASH Course Tutorial / bus660dotcom

    OpenAIRE

    vasanthi moola

    2015-01-01

    BUS 660 Entire Course For more course tutorials visit www.bus660.com   BUS 660 Week 1 Assignment Developing Leaders at UPS BUS 660 Week 2 Assignment Leadership Style BUS 660 Week 3 Assignment Leadership Traits BUS 660 Week 4 Assignment Leadership Skills BUS 660 Week 5 Assignment Big Changes for a Small Hospital BUS 660 Week 6 Assignment Research Paper BUS 660 Week 1 DQ 1 Leadership Defined BUS 660 Week 1 DQ 2 Education and Experience BUS 66...

  13. The high speed bus technology development program

    Science.gov (United States)

    Ludvigson, M. T.; Modrow, M. B.; Goldman, P. C.

    The current development status of a high-speed data bus to link MIL-STD-1750A computers in avionics applications is reviewed and illustrated with diagrams and photographs. The bus requirements include data rate 50 Mb/s, a linear token-passing scheme permitting both electronic and fiber-optic implementation, up to 64-terminal capacity, maximum terminal separation 300 ft, latency control via token-rotation-timer priority, self-test and bus-loop test capability, and automatic clock synchronization. The design concept and performance of a breadboard wire bus tested in July 1986 are discussed in detail, with particular attention to the redundancy manager, the output controller, the input controller, the ringmaster topology manager, and typical initial-placement problems.

  14. BUS 210 Course tutorial/ indigohelp

    OpenAIRE

    WVFD

    2015-01-01

    For more classes visit www.indigohelp.com   BUS 210 Week 1 DQ1 and DQ2 BUS 210 Week 1 Checkpoint Business Models and Systems (2 Sets) BUS 210 Week 1 Knowledge Check BUS 210 Week 2 CheckPoint Business Organization  (2 Sets) BUS 210 Week 2 Knowledge Check BUS 210 Week 2 Assignment Evolution of Business Presentation (2 Sets) BUS 210 Week 3 DQ 1 and DQ 2 BUS 210 Week 3 CheckPoint Code of Ethics (2 Sets) BUS 210 Week 3 Knowledge Check BUS 2...

  15. A Comparative Analysis of Different Arbitration Protocols for Multiple—Bus Multiprocessors

    Institute of Scientific and Technical Information of China (English)

    庄旗铭; 杨庆; 等

    1996-01-01

    Earlier performance studies of multiple-bus multiprocessor systems assume a random selection of competing requests for bus assignment and ignore the effects of realistic bus arbitraion schemes on the performance of such systems.In this paper,we present performance analysis of the multiple-bus systems with different arbitration protocols.The priority protocols considered are random selection,fixed priority,rotating priority,round-robin and FIFO.Analytical models are developed for each of these five different priority protocols.Each of our analyses models exactly the behavior of the corresponding priority protocol with little computation cost.The analytical models are validated through extensive simulations and are them used to carry out performance analysis and comparison of different priority protocols.Numerical results obtained from our models show that the round-robin protocol performs the best amont the five protocols in the system with a few buses.

  16. PCI bus demystified

    CERN Document Server

    Abbott, Doug

    2004-01-01

    The peripheral component interconnect (PCI) bus is the dominant bus system used to connect the different elements making up today''s high-performance computer systems. Different PCI implementations have also been developed for such applications as telecommunications and embedded computing. If an application calls for high speed, high reliability, flexible configuration, and bus mastering, then PCI is the only logical bus choice. This book is an applications-oriented introduction to the PCI bus, with an emphasis on implementing PCI in a variety of computer architectures. Special attention is given to industrial and mission-critical applications of PCI bus.·Fully describes PCI electrical specifications, mechanical requirements, and signal types·Covers advanced topics through numerous design examples to increase the readers understanding of the subject ·Includes updated coverage of PCI-X 2.0

  17. Intelligent Bus Stops in the Flexible Bus Systems

    Directory of Open Access Journals (Sweden)

    Razi Iqbal

    2014-09-01

    Full Text Available The purpose of this paper is to discuss Intelligent Bus Stops in a special Demand Responsive Transit (DRT, the Flexible Bus System. These Intelligent Bus Stops are more efficient and information rich than Traditional Bus Stops. The real time synchronization of the Flexible Bus System makes it unique as compared to Traditional Bus Systems. The Main concern is to make Bus Stops intelligent and information rich. Buses are informed about the no. of passengers waiting at the upcoming Bus Stops. If there are no passengers to ride or get off on upcoming Bus Stop, the Bus can skip that Bus Stop and head towards the next Bus Stop where passenger is waiting, which will decrease the ride time of the passengers on the Bus and also the wait time of the passengers waiting on the upcoming Bus Stops. Providing more information at Bus Stops about the Destination (Time to Destination, Distance to Destination etc. and Buses (Bus Location, Arrival Time of Bus etc. makes it easier for the passengers to decide whether to ride a particular Bus or not.

  18. Development in Conducting Bus of RE-Al Alloys

    Institute of Scientific and Technical Information of China (English)

    李德富; 胡捷; 章萍芝; 石瑛; 李彦利

    2001-01-01

    Four kinds of deformed aluminum alloys were tested. One kind of RE-A1-Mg-Si alloy, which possessed high conductivity and strength, was the first priority by contrast test, The large specification bus of conducting aluminum all oys was made by thermomechanical process during the industrial experiment. The properties of the bus are as follows:the tensile strength σb is 238 MPa, the conductivity (v.s. IACS) is 54.3%, and the current-carrying capacity is beyond 3.1kA during working process. This kind of RE-Al alloy bus has been applied to several electrical transmitting and transforming work.

  19. TPG bus passes

    CERN Multimedia

    Staff Association

    2013-01-01

    The CERN Staff Association will stop selling TPG bus passes. All active and retired members of the CERN personnel will be able to purchase Unireso bus passes from the CERN Hostel - Building 39 (Meyrin site) from 1st February 2013. For more information: https://cds.cern.ch/journal/CERNBulletin/2013/04/Announcements/1505279?ln=en

  20. 40 CFR 52.263 - Priority treatment for buses and carpools-Los Angeles Region.

    Science.gov (United States)

    2010-07-01

    ... agencies to which legal authority has been delegated, shall establish the following system of bus/carpool... agencies to which legal authority has been delegated, shall establish the following system of bus and bus... § 52.263 Priority treatment for buses and carpools—Los Angeles Region. (a) Definitions: (1)...

  1. The erigone bus study

    International Nuclear Information System (INIS)

    A study has been made of some factors determining the performance and cost-effectiveness of microcomputer bus systems implemented in Europa crates. An experimental system has been specified and a number of modules constructed in accordance with the specification, in order to test the validity of some of the ideas proposed. It has been demonstrated that the bus interfacing logic can be simple and inexpensive, while maintaining a high degree of processor independence and also a high degree of transparency in operation. The number of pins required by the bus is minimized by multiplexing address and data. A series termination for the drive of the multiplexed lines permits cross-talk to be reduced to insignificant levels: this technique is recommended for wider application. The experimental bus is proposed as a basis for the construction of simple microcomputer-based instrumentation systems. (orig.)

  2. An Optimization Model for the Selection of Bus-Only Lanes in a City.

    Directory of Open Access Journals (Sweden)

    Qun Chen

    Full Text Available The planning of urban bus-only lane networks is an important measure to improve bus service and bus priority. To determine the effective arrangement of bus-only lanes, a bi-level programming model for urban bus lane layout is developed in this study that considers accessibility and budget constraints. The goal of the upper-level model is to minimize the total travel time, and the lower-level model is a capacity-constrained traffic assignment model that describes the passenger flow assignment on bus lines, in which the priority sequence of the transfer times is reflected in the passengers' route-choice behaviors. Using the proposed bi-level programming model, optimal bus lines are selected from a set of candidate bus lines; thus, the corresponding bus lane network on which the selected bus lines run is determined. The solution method using a genetic algorithm in the bi-level programming model is developed, and two numerical examples are investigated to demonstrate the efficacy of the proposed model.

  3. Bus.py

    Energy Technology Data Exchange (ETDEWEB)

    2014-07-21

    GridLAB-D is an agent? based distribution system simulation environment that allows fine-grained end-user models, including geospatial and network topology detail. GridLAB-D addresses the lack of runtime interaction by designing a flexible communication interface, Bus.py (pronounced bus-dot-pie), that uses Python to pass messages between one or more GridLAB-D instances and a Smart Grid simulator.

  4. Savannah River bus project

    Energy Technology Data Exchange (ETDEWEB)

    Summers, W.A. [Westinghouse Savannah River Co., Aiken, SC (United States)

    1998-08-01

    The H2Fuel Bus is the world`s first hybrid hydrogen electric transit bus. It was developed through a public/private partnership involving several leading technology and industrial organizations in the Southeast, with primary funding and program management provided by the Department of Energy. The primary goals of the project are to gain valuable information on the technical readiness and economic viability of hydrogen buses and to enhance the public awareness and acceptance of emerging hydrogen technologies. The bus has been operated by the transit agency in Augusta, Georgia since April, 1997. It employs a hybrid IC engine/battery/electric drive system, with onboard hydrogen fuel storage based on the use of metal hydrides. Initial operating results have demonstrated an overall energy efficiency (miles per Btu) of twice that of a similar diesel-fueled bus and an operating range twice that of an all-battery powered electric bus. Tailpipe emissions are negligible, with NOx less than 0.2 ppm. Permitting, liability and insurance issues were addressed on the basis of extensive risk assessment and safety analyses, with the inherent safety characteristic of metal hydride storage playing a major role in minimizing these concerns. Future plans for the bus include continued transit operation and use as a national testbed, with potential modifications to demonstrate other hydrogen technologies, including fuel cells.

  5. LHC on the bus

    CERN Document Server

    Laëtitia Pedroso

    2010-01-01

    On 15 December, an airport bus will be transformed in the image of CERN. The bus will be seen by the thousands of travellers arriving in Geneva, informing them of the possibility to visit CERN.   Sketch of the bus. The good relationship between Geneva International Airport and CERN started several years ago. In 2004 the airport put advertising space in the arrivals area at CERN's disposal free of charge. Now, starting on 15 December, a 40-foot long bus will display a giant sticker advertisement depicting CERN as it takes passengers over the airport tarmac to their planes. This is no ordinary sticker, and it was no mean task to attach it to the bus. The task of producing and attaching it was entrusted to Geneva-based specialists Mathys SA. With the ski season opening on 15 December, there will be many travellers arriving at the airport, and the bus will be ready to receive them. When one thinks of CERN, the subjects that naturally come to mind are the LHC, the mysteries of the Universe...

  6. BUS 660 Ash course tutorial / uophelp

    OpenAIRE

    uophelp

    2015-01-01

      www.uophelp.com         BUS 660 Week 1 Assignment Developing Leaders at UPS BUS 660 Week 2 Assignment Leadership Style BUS 660 Week 3 Assignment Leadership Traits BUS 660 Week 4 Assignment Leadership Skills BUS 660 Week 5 Assignment Big Changes for a Small Hospital BUS 660 Week 6 Assignment Research Paper BUS 660 Week 1 DQ 1 Leadership Defined BUS 660 Week 1 DQ 2 Education and Experience BUS 660 Week 2 DQ 1 Lea...

  7. Optimal control system of the intermittent bus-only approach

    Institute of Scientific and Technical Information of China (English)

    Jie Jiang; Yulin Chang

    2014-01-01

    To guarantee bus priority with a minimum impact on car traffic at intersections, an optimal control system of the intermittent bus-only approach (IBA) was proposed. The problems of the existing system are first solved through optimization: the judgment time of the IBA system was advanced to allow a bus to jump car queues if the bus was detected to arrive at the intersection, and the instant that the IBA lane became available to cars was controlled dynamically to increase the capacity of the IBA lane. The total car delay in one cycle was then analyzed quantitatively when implementing the optimal control system. The results show that in comparison with the existing system of the IBA, the car delay is greatly reduced and the probability of a car stopping twice is low after optimizing the IBA system.

  8. BusTechn

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    Introduced the characteristics of series communicat io n I 2C bus and basic communication protocol, and introduced the application of the bus I 2C according to the image sensor OV7610.The computer correspondence s tyle can be divided the parallel correspondence and the series correspondence. T he rate of series correspondence is rapid, and the property of real time is exce llent. Because the number of ports which it takes is great, it is not proper to miniaturize. Whereas the rate of series corresponden...

  9. A New Design of Dynamic Priority Planning on CAN for Wire Harness Assembly Machine

    Institute of Scientific and Technical Information of China (English)

    GUO Hui; HE Yongyi; GUO Shuai; HE Jinbao

    2006-01-01

    The specific features of the CAN bus is analyzed and the functional performances in the Controller Area Network (CAN) bus system of Wire Harness Assembly Machine (WHAM) is discussed. A reasonable definition of application layer which is not defined in the CAN specification is given for the control system of WHAM. So application layer planning of CAN bus for dynamic priority is presented. With the mechanism of dynamic priority, it becomes easily to find out the error nodes in the CAN bus system of WHAM and realize multi-mode operation.

  10. Learning NServiceBus

    CERN Document Server

    Boike, David

    2013-01-01

    This is a practical tutorial containing hands-on examples for creating a messaging and SOA based service bus.This book is for .NET developers who are looking for ways to overcome problems related to buggy third party web service integrations, codebases that have grown into a big ball of mud, and batch jobs failure.

  11. BUS 401 Ash course tutorial / uophelp

    OpenAIRE

    uophelp

    2015-01-01

    For more course tutorials visit www.uophelp.com   BUS 401 Week 1 DQ 1 Corporate Income Tax and Real Interest Rates BUS 401 Week 1 DQ 2 Cash Flow and Ratio Analysis BUS 401 Week 1 Assignment Ratio Analysis BUS 401 Week 1 Quiz BUS 401 Week 2 DQ 1 Annuity and Capital Asset Pricing BUS 401 Week 2 DQ 2 Bonds and Common Stock BUS 401 Week 2 Assignment Alternative Investments BUS 401 Week 2 Quiz BUS 401 Week 3 DQ 1 NPV, PI, and IRR BUS 401 Week 3 ...

  12. Diplomatic Priorities

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    China-Russia relations Our relationship with Russia is one of the priorities of China’s diplomacy. The two countries have enjoyed mutual support on issues that concern each other’s core interests. We have

  13. BUS 437 UOP Course Tutorial/ Tutorialrank

    OpenAIRE

    john

    2015-01-01

    For more course tutorials visit www.tutorialrank.com Tutorial Purchased: 4 Times, Rating: A+   ASHFORD BUS 437 Week 1 Assignment Company Description ASHFORD BUS 437 Week 1 DQ 1 Writing the Business Plan ASHFORD BUS 437 Week 1 DQ 2 Using Outside Help to Write the Plan ASHFORD BUS 437 Week 2 Assignment Marketing Section ASHFORD BUS 437 Week 2 DQ 1 Customer Survey ASHFORD BUS 437 Week 2 DQ 2 Industry Analysis ASHFORD BUS 437 Week 3 Assignment Strategy...

  14. BUS 402 Ash course tutorial / uophelp

    OpenAIRE

    uophelp-

    2015-01-01

    For more course tutorials visit www.uophelp.com     BUS 402 Week 1 DQ 1 Environmental Changes BUS 402 Week 1 DQ 2 Vision and Mission BUS 402 Week 2 DQ 1 Components of External Environment  BUS 402 Week 2 DQ 2 Components of Internal Analysis BUS 402 Week 2 Assignment Starbucks S.W.O.T. Analysis BUS 402 Week 3 DQ 1 Market Positioning Strategies BUS 402 Week 3 DQ 2 Vertical Integration BUS 402 Week 4 DQ 1 International Markets BUS 40...

  15. BUS 642 Ash course tutorial / uophelp

    OpenAIRE

    uophelp

    2015-01-01

    www.uophelp.com     BUS 642 Week 1 DQ 1 Scientific Thinking (Ash Course) BUS 642 Week 1 DQ 2 Making Research Decisions (Ash Course) BUS 642 Week 1 Exercises (Ash Course) BUS 642 Week 2 DQ 1 Ethics in Business Research (Ash Course) BUS 642 Week 2 DQ 2 Design of Research (Ash Course) BUS 642 Week 2 Exercises (Ash Course) BUS 642 Week 3 DQ 1 Measurement Scales (Ash Course) BUS 642 Week 3 DQ 2 Clarifying the Research Questions (Ash Course) BUS...

  16. BUS 437 Ash course tutorial / uophelp

    OpenAIRE

    uophelp

    2015-01-01

    For more course tutorials visit www.uophelp.com   BUS 437 Week 1 Assignment Company Description BUS 437 Week 1 DQ 1 Writing the Business Plan BUS 437 Week 1 DQ 2 Using Outside Help to Write the Plan BUS 437 Week 2 Assignment Marketing Section BUS 437 Week 2 DQ 1 Customer Survey BUS 437 Week 2 DQ 2 Industry Analysis BUS 437 Week 3 Assignment Strategy, Implementation, & Management Sections BUS 437 Week 3 DQ 1 Implementation BUS 437 Week 3 DQ ...

  17. Platform Screen Doors Enhanced Bus Rapid Transit Intelligent Performance

    Directory of Open Access Journals (Sweden)

    Chonghua Zhou

    2011-06-01

    Full Text Available It is the last straw to clutch at to solve the urban traffic issue, to develop high-capacity rapid transit and promote transit priority. Characterized by low cost, short construction cycle and flexible development, Bus Rapid Transit (BRT has been favored by more and more cities in the world. The Platform Screen Doors (PSDs system is an important component at BRT stations, and it is original motive to be designed to satisfy the growing demand from BRT application to provide increased safety and comfort in the first. With the continual increased demand for BRT intelligent performance, the PSDs system is applied to get Bus Location Information with accurate position of arrival and departure at stop, to provide Real-Time Information (RTI for BRT passengers using PSDs/GPS compound location technology, to put into practice Bus Fleet Management (BFM. Considering the capability of accurate location, it can be applied to actualize Bus Sign Priority in the future. The authors are luck to take in part the practice of BRT system, especially in the BRT intelligent systems, the papers will introduce upwards application and conceive in detail.

  18. Diplomatic Priorities

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    @@ China-Russia relations Our relationship with Russia is one of the priorities of China's diplomacy.The two countries have enjoyed mutual support on issues that concern each other's core interests.We have the same or similar views on many major international and regional issues.And we coordinate and communicate closely.

  19. 77 FR 48592 - Bus and Bus Facilities Discretionary Program Funds

    Science.gov (United States)

    2012-08-14

    ... authorized by 49 U.S.C. 5309(b), as amended by Section 3011 of the Safe, Affordable, Flexible, Efficient... Livability Initiatives (77 FR 6178). The NOFA explained the requirements and procedures for eligible... facilities, bus-related equipment, and transit asset management systems. The FY 2012 Bus...

  20. BUS 611 Ash course tutorial / uophelp

    OpenAIRE

    uophelp

    2015-01-01

    For more course tutorials visit www.uophelp.com   BUS 611 Week 1 Assignment Article Review (Ash Course) BUS 611 Week 2 Assignment Project Risk (Ash Course) BUS 611 Week 3 Assignment WBS (Ash Course) BUS 611 Week 4 Assignment Integrated Project Management Tools (Ash Course) BUS 611 Week 5 Assignment Monthly Status Reports (Ash Course) BUS 611 Week 6 Final Research Paper (Ash Course)  

  1. BUS 620 Ash course tutorial / uophelp

    OpenAIRE

    uophelp

    2015-01-01

    For more course tutorials visit www.uophelp.com   BUS 620 Week 1 DQ 1 What is Marketing (Ash Course) BUS 620 Week 1 DQ 2 Marketing Strategies (Ash Course) BUS 620 Week 1 The Future of the New York Times (Ash Course) BUS 620 Week 2 DQ 1 Buyer Behavior (Ash Course) BUS 620 Week 2 DQ 2 Customer Needs (Ash Course) BUS 620 Week 2 Industry Forecasting (Ash Course) BUS 620 Week 3 DQ 1 Braining Nordstrom (Ash Course) BUS 620 Week 3 DQ 2 Marketing Segmentat...

  2. Learning NServiceBus Sagas

    CERN Document Server

    Helton, Rich

    2015-01-01

    If you are an Enterprise C# developer who wishes to extend your knowledge of NServiceBus and Enterprise Service Bus in C#, this is the book for you. This book is designed to enhance the education of ESBs and their messaging, whether you are a beginner or a seasoned expert in Enterprise C#, Apex, and Visualforce pages.

  3. Standard satellite data bus initiative

    Science.gov (United States)

    Spinney, Timothy; Yousef, Hassan

    The USAF Space Technology Center manages programs to reduce satellite costs through the appropriate use of microelectronics standardization. Ongoing programs such as the Standard Spacecraft Memory Module and Generic VHSIC Spaceborne Computer have provided an insight into the value of standardization and led to an initiative to coordinate microelectronics development around a standard satellite data bus, which should reduce costs by eliminating program- and contractor-unique interfaces, increasing production runs, and developing generic test equipment. Current efforts focus on the satellite housekeeping functions, and it is expected that the mission payload would also use this data bus. Based on existing housekeeping data-traffic requirements, several candidates have been identified for the standard data bus. The two candidates selected for further work are the ANSI X3T9.5 data bus and the linear token-passing data bus being proposed as part of the Advanced Tactical Fighter effort.

  4. Defining priorities

    CERN Multimedia

    2013-01-01

    Last week the European Strategy Group met in Erice (Italy) to distil reams of input and months of discussion into a concise document outlining an updated Strategy for European Particle Physics. The result is a document that will be presented to the Council for feedback next month, before final approval by the Council at a special meeting in Brussels on 29 May. The Strategy process was important when it began in 2005, and is even more so today with important discoveries behind us and a changing global landscape for particle physics ahead.   The draft update, it’s fair to say, contains few surprises, but there are nevertheless some weighty issues for the Council to deliberate. The top priority is, of course, the full exploitation of the LHC, but the Strategy goes further, stating unambiguously that Europe’s top priority should be the high-luminosity upgrade of the machine. Other high-priority items are accelerator R&D to ensure the long-term global future of the field. O...

  5. The Myth of the "Ideal Bus"

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    @@ Does as an ideal bus technology exist? Many companies have and will promote a single technology as the ideal bus that will meet all application needs, but in actuality, each bus technology has its own strengths and weaknesses and thus is appropriate for different applications. History has shown the folly of claiming an ideal bus for every application.

  6. BUS 402 UOP Course Tutorial/ Tutorialrank

    OpenAIRE

    jonh

    2015-01-01

    For more course tutorials visit www.tutorialrank.com Tutorial Purchased: 4 Times, Rating: A+   ASHFORD BUS 402 Week 1 DQ 1 Environmental Changes ASHFORD BUS 402 Week 1 DQ 2 Vision and Mission ASHFORD BUS 402 Week 2 DQ 1 Components of External Environment ASHFORD BUS 402 Week 2 DQ 2 Components of Internal Analysis ASHFORD BUS 402 Week 2 Assignment Starbucks S.W.O.T. Analysis ASHFORD BUS 402 Week 3 DQ 1 Market Positioning Strategies ASHFORD BUS 402 W...

  7. BUS 501 Str course tutorial / uophelp

    OpenAIRE

    uophel

    2015-01-01

    For more course tutorials visit www.uophelp.com     BUS 501 Week 3 Assignment 1 The Independent Government Cost Estimate and the Statement of Work (Str Course) BUS 501 Week 4 Assignment 2 Types of Contracts and Performance-Based Acquisition (Str Course) BUS 501 Week 7 Assignment 3 Small Business Program and Source Selection Plans (Str Course) BUS 501 Assignment 4 Technical and Cost or Price Evaluations and Price Reasonableness (Str Course) BUS 501 Wee...

  8. BUS 599 Str course tutorial / uophelp

    OpenAIRE

    uophelp

    2015-01-01

    For more course tutorials visit www.uophelp.com   BUS 599 Week 1 Assignment Crafting and Executing Strategy Case JetBlue Airways BUS 599 Assignment #2 Competitive Forces and SWOT Analysis # Case Whole Foods Market BUS 599 Week 3 Assignment Foreign Market Entry and Diversification Case Corona Beer BUS 599 Week 4 Assignment HRM Issues Diversification Strategies Case Nucor Corporation BUS 599 Week 5 Assignment Corporate Culture Leadership Actions for Strategy Imp...

  9. SCHOOL BUS GARAGES, 1966 REVISION.

    Science.gov (United States)

    JOHNSON, HERBERT F.

    STANDARDS AND RECOMMENDATIONS ARE GIVEN FOR THE DESIGN AND CONSTRUCTION OF SCHOOL BUS GARAGES INCLUDING BRIEF DISCUSSIONS OF--(1) SITE DEVELOPMENT, (2) DESIGN AND CONSTRUCTION, AND (3) MECHANICAL (HEATING, PLUMBING, AND VENTILATION) AND ELECTRICAL FACTORS. (JT)

  10. Hydrogen Bus Technology Validation Program

    OpenAIRE

    Burke, Andy; McCaffrey, Zach; Miller, Marshall; Collier, Kirk; Mulligan, Neal

    2005-01-01

    Heavy duty engines are substantial contributors to NOX and PM emissions inventories in urban areas, and stringent emissions standards have been adopted as a consequence. CARB has passed very strict emissions standards for heavy duty engines beginning in 2007. Meeting these standards, especially for NOX emissions, may be difficult for conventional transit bus technologies. The purpose of the Hydrogen Bus Technology Evaluation Program was to develop and evaluate hydrogen enriched natural gas (H...

  11. Bus Stop - Environment Connection: Do Characteristics of the Built Environment Correlate with Bus Stop Crime?

    OpenAIRE

    Robin S Liggett; Loukaitou-Sideris, Anastasia; Iseki, Hiroyuki

    2003-01-01

    Can we understand why some bus stops are safe and others are crime-ridden? Can we predict which features of the bus stop environment are likely to encourage or discourage crime? Can we design safer bus stops? These questions are addressed by exploring the relationship between environmental variables and bus stop crime. An earlier study used crime data, along with environmental indicators, for a sample of 60 bus stops in downtown Los Angeles. Crime rates were higher for bus stops near alleys, ...

  12. Wishbone bus Architecture - A Survey and Comparison

    CERN Document Server

    Sharma, Mohandeep; 10.5121/vlsic.2012.3210

    2012-01-01

    The performance of an on-chip interconnection architecture used for communication between IP cores depends on the efficiency of its bus architecture. Any bus architecture having advantages of faster bus clock speed, extra data transfer cycle, improved bus width and throughput is highly desirable for a low cost, reduced time-to-market and efficient System-on-Chip (SoC). This paper presents a survey of WISHBONE bus architecture and its comparison with three other on-chip bus architectures viz. Advanced Micro controller Bus Architecture (AMBA) by ARM, CoreConnect by IBM and Avalon by Altera. The WISHBONE Bus Architecture by Silicore Corporation appears to be gaining an upper edge over the other three bus architecture types because of its special performance parameters like the use of flexible arbitration scheme and additional data transfer cycle (Read-Modify-Write cycle). Moreover, its IP Cores are available free for use requiring neither any registration nor any agreement or license.

  13. Measuring and Evaluation on Priority Lanes

    Directory of Open Access Journals (Sweden)

    Shan Jiang

    2010-12-01

    Full Text Available Along with economic development, cities are increasingly congested in China. In order to eliminate peak-hour congestion, many cities establish priority lanes, commonly bus lanes. Although priority lanes could help Local Authorities gain its short-term management objectives, at the same time, it would greatly infringe on the legitimate rights of other vehicles and waste the scarce road resources, which is rigorously proved by mathematical models in this paper. In the long run, priority lanes would make social conflicts more intensified, and therefore highly undesirable. On the contrary, the social system engineering, combined with High Occupancy Vehicle (HOV lanes and High Occupancy Toll (HOT lanes, is the right way to alleviate overcrowding and build a Low-Carbon harmonious society.

  14. Technique current status and development trend of new energy bus%新能源客技术现状及发展趋势

    Institute of Scientific and Technical Information of China (English)

    刘凤君; 常青

    2012-01-01

    Aim at the technique current status of electric bus,series,parallel,series-parallel hybrid bus,analyse the development trend of new energy bus,point out the development priority of new energy bus.%针对纯电动客车,串联、并联、混联混合动力客车技术的现状,分析了新能源客车发展趋势,指出了新能源客车发展重点。

  15. BUS 210 UOP Course Tutorial/ Tutorialrank

    OpenAIRE

    john

    2015-01-01

                      For more course tutorials visit www.tutorialrank.com Tutorial Purchased: 6 Times, Rating: A+   BUS 210 Week 1 DQ1 and DQ2 (UOP Course) BUS 210 Week 1 Checkpoint Business Models and Systems (UOP Course) BUS 210 Week 2 CheckPoint Business Organization (UOP Course) BUS 210 Week 2 Assignment Evolution of Business Presentation (UOP Course) BUS 210 Week 3 DQ 1 and DQ 2 (UOP Course) BUS 210 W...

  16. Vaccination priorities.

    Science.gov (United States)

    Steffen, Robert; Baños, Ana; deBernardis, Chiara

    2003-02-01

    priorities need to be set correctly.

  17. Aids to School Bus Design

    Science.gov (United States)

    1991-01-01

    Navistar International Transportation Corporation, Chicago, IL, used three separate NASA-developed technologies in the design and testing of their 3000 Series Bus Chassis which was developed expressly for school bus applications. For structural analysis, they used the MSC/NASTRAN program which mathematically analyzes a design and predicts how it will hold up under stress. They also used the SPATE 9000 system for non-contact measurement of stress, load transfer mechanisms, detection of hidden flaws, and monitoring structural changes during fatigue testing. SPATE 9000 was based on infrared stress measurement technology developed by Langley Research Center. They also employed the Wyle Ride Quality Meter, which was developed by Langley to aid in passenger aircraft design by providing an accurate measurement of ride vibration and sound level. These numbers translate into a subjective discomfort level index. These technologies contribute to the company's 45-48 percent share of the school bus chassis market.

  18. School bus and children's traffic safety

    Institute of Scientific and Technical Information of China (English)

    PAN Shu-ming; Stephen Hargarten; ZHU Shan-kuan

    2007-01-01

    There is no safer way to transport a child than a school bus. Fatal crashes involving occupants are extremely rare events in the US. In recent years, school bus transportation began to develop in China. We want to bring advanced experience on school bus safety in Western countries such as the US to developing countries.Methods: We searched the papers related to school bus safety from Medline, Chinese Scientific Journals Database and the Web of the National Highway Traffic Safety Administration (NHTSA).Results: There were only 9 papers related to school bus safety, which showed that higher levels of safety standards on school buses, school bus-related transportation and environmental laws and injury prevention were the primary reasons for the desired outcome. Few school bus is related to deaths and injuries in the developed countries.Conclusions: The developing countries should make strict environmental laws and standards on school bus safety to prevent children's injury and death.

  19. Communication Architecture Synthesis for Multi-bus SoC

    Directory of Open Access Journals (Sweden)

    Abdelkrim Zitouni

    2006-01-01

    Full Text Available In the systems on chip (SoC design, the synthesis of communication architecture constitutes the bottleneck which can affect the performances of the system. Various schemes and protocols can be necessary, just as various topologies of interconnection. To reduce the complexity of the communications refinement, we present in this study a model and a synthesis approach for multi-bus communication architecture containing centralized bridge. The automation of the arbiter synthesis step profited from a detailed attention. This stage generates a hierarchical arbiter integrating various priority arbitration modules. The proposed approach was integrated in a toolbox based environment

  20. Design and Implementation of High Performance AHB Arbiter for on chip Bus Architecture

    Directory of Open Access Journals (Sweden)

    ASHUTOSH KUMAR SINGH,

    2011-03-01

    Full Text Available Resolution is a big issue in SOC( system On Chip while dealing with number of master trying to sense a single data bus . The ffectiveness of a system to resolve this priority resides in its ability to logical assignment of the chance to transmit data width of the data, response to the interrupts etc. The purpose of this paper is to propose the scheme to implement such a system using the specification of AMBA bus protocol .The scheme involves the typical AMBA features of ‘single clock edge transition ‘, Split transaction ‘,’several bus masters ‘, ‘burst transfer ’.The bus arbiter ensures that only one bus master at a time is allowed to initiate data ransfers. Even though the arbitration protocol is fixed, any arbitration algorithm, such as highest priority or fair access can be implemented depending on the application requirements .The design architecture is written using VHDL(Very High Speed Integrated CircuitsHardware Description Language code using Xilinx ISE Tools .The architecture is modeled and synthesized using RTL(Register Transfer Level abstraction and Implemented on Virtex2 series.

  1. HERMES travels by CAN bus

    Science.gov (United States)

    Waller, Lewis G.; Shortridge, Keith; Farrell, Tony J.; Vuong, Minh; Muller, Rolf; Sheinis, Andrew I.

    2014-07-01

    The new HERMES spectrograph represents the first foray by AAO into the use of commercial off-the-shelf industrial field bus technology for instrument control, and we regard the final system, with its relatively simple wiring requirements, as a great success. However, both software and hardware teams had to work together to solve a number of problems integrating the chosen CANopen/CAN bus system into our normal observing systems. A Linux system running in an industrial PC chassis ran the HERMES control software, using a PCI CAN bus interface connected to a number of distributed CANopen/CAN bus I/O devices and servo amplifiers. In the main, the servo amplifiers performed impressively, although some experimentation with homing algorithms was required, and we hit a significant hurdle when we discovered that we needed to disable some of the encoders used during observations; we learned a lot about how servo amplifiers respond when their encoders are turned off, and about how encoders react to losing power. The software was based around a commercial CANopen library from Copley Controls. Early worries about how this heavily multithreaded library would work with our standard data acquisition system led to the development of a very low-level CANopen software simulator to verify the design. This also enabled the software group to develop and test almost all the control software well in advance of the construction of the hardware. In the end, the instrument went from initial installation at the telescope to successful commissioning remarkably smoothly.

  2. Low-inductance bus lines

    Science.gov (United States)

    Kernick, A.

    1977-01-01

    Laminated bus strips and bifilar litz cable connectors for high-power rectifiers, thrisistors, and transistors provide low inductance and eliminate electromagnetic interference in high-power circuits. These techniques offer significant cost advantages because of ease of assembly and consistent high quality of product. Effectiveness makes general usage in static power conversion likely.

  3. Pybus -- A Python Software Bus

    Energy Technology Data Exchange (ETDEWEB)

    Lavrijsen, Wim T.L.P.

    2004-10-14

    A software bus, just like its hardware equivalent, allows for the discovery, installation, configuration, loading, unloading, and run-time replacement of software components, as well as channeling of inter-component communication. Python, a popular open-source programming language, encourages a modular design on software written in it, but it offers little or no component functionality. However, the language and its interpreter provide sufficient hooks to implement a thin, integral layer of component support. This functionality can be presented to the developer in the form of a module, making it very easy to use. This paper describes a Pythonmodule, PyBus, with which the concept of a ''software bus'' can be realized in Python. It demonstrates, within the context of the ATLAS software framework Athena, how PyBus can be used for the installation and (run-time) configuration of software, not necessarily Python modules, from a Python application in a way that is transparent to the end-user.

  4. Pybus - A Python Software Bus

    International Nuclear Information System (INIS)

    A software bus, just like its hardware equivalent, allows for the discovery, installation, configuration, loading, unloading, and run-time replacement of software components, as well as channeling of inter-component communication. Python, a popular open-source programming language, encourages a modular design on software written in it, but it offers little or no component functionality. However, the language and its interpreter provide sufficient hooks to implement a thin, integral layer of component support. This functionality can be presented to the developer in the form of a module, making it very easy to use. This paper describes a Pythonmodule, PyBus, with which the concept of a ''software bus'' can be realized in Python. It demonstrates, within the context of the ATLAS software framework Athena, how PyBus can be used for the installation and (run-time) configuration of software, not necessarily Python modules, from a Python application in a way that is transparent to the end-user

  5. Analysis of robustness of urban bus network

    Science.gov (United States)

    Tao, Ren; Yi-Fan, Wang; Miao-Miao, Liu; Yan-Jie, Xu

    2016-02-01

    In this paper, the invulnerability and cascade failures are discussed for the urban bus network. Firstly, three static models(bus stop network, bus transfer network, and bus line network) are used to analyse the structure and invulnerability of urban bus network in order to understand the features of bus network comprehensively. Secondly, a new way is proposed to study the invulnerability of urban bus network by modelling two layered networks, i.e., the bus stop-line network and the bus line-transfer network and then the interactions between different models are analysed. Finally, by modelling a new layered network which can reflect the dynamic passenger flows, the cascade failures are discussed. Then a new load redistribution method is proposed to study the robustness of dynamic traffic. In this paper, the bus network of Shenyang City which is one of the biggest cities in China, is taken as a simulation example. In addition, some suggestions are given to improve the urban bus network and provide emergency strategies when traffic congestion occurs according to the numerical simulation results. Project supported by the National Natural Science Foundation of China (Grant Nos. 61473073, 61374178, 61104074, and 61203329), the Fundamental Research Funds for the Central Universities (Grant Nos. N130417006, L1517004), and the Program for Liaoning Excellent Talents in University (Grant No. LJQ2014028).

  6. Electrical system architecture having high voltage bus

    Science.gov (United States)

    Hoff, Brian Douglas; Akasam, Sivaprasad

    2011-03-22

    An electrical system architecture is disclosed. The architecture has a power source configured to generate a first power, and a first bus configured to receive the first power from the power source. The architecture also has a converter configured to receive the first power from the first bus and convert the first power to a second power, wherein a voltage of the second power is greater than a voltage of the first power, and a second bus configured to receive the second power from the converter. The architecture further has a power storage device configured to receive the second power from the second bus and deliver the second power to the second bus, a propulsion motor configured to receive the second power from the second bus, and an accessory motor configured to receive the second power from the second bus.

  7. BUS 620 ASHFORD Course Tutorial/TutorialRank

    OpenAIRE

    atwater

    2015-01-01

    For more course tutorials visit www.tutorialrank.com Tutorial Purchased: 4 Times, Rating: A   ASHFORD BUS 620 Week 1 DQ 1 What is Marketing   ASHFORD BUS 620 Week 1 DQ 2 Marketing Strategies   ASHFORD BUS 620 Week 1 Assignment Tesco Case   ASHFORD BUS 620 Week 2 DQ 1 Buyer Behavior   ASHFORD BUS 620 Week 2 DQ 2 Customer Needs   ASHFORD BUS 620 Week 2 Industry Forecasting   ASHFORD BUS 620 Week 3...

  8. BUS 660 ASHFORD Course Tutorial/TutorialRank

    OpenAIRE

    john

    2015-01-01

    For more course tutorials visit www.tutorialrank.com Tutorial Purchased: 4 Times, Rating: A+   BUS 660 Week 1 Assignment Developing Leaders at UPS  BUS 660 Week 2 Assignment Leadership Style  BUS 660 Week 3 Assignment Leadership Traits  BUS 660 Week 4 Assignment Leadership Skills  BUS 660 Week 5 Assignment Big Changes for a Small Hospital  BUS 660 Week 6 Assignment Research Paper BUS 660 Week 1 DQ 1Leadership Defined BU...

  9. PinBus Interface Design

    Energy Technology Data Exchange (ETDEWEB)

    Hammerstrom, Donald J.; Adgerson, Jewel D.; Sastry, Chellury; Pratt, Richard M.; Pratt, Robert G.

    2009-12-30

    On behalf of the U.S. Department of Energy, PNNL has explored and expanded upon a simple control interface that might have merit for the inexpensive communication of smart grid operational objectives (demand response, for example) to small electric end-use devices and appliances. The approach relies on bi-directional communication via the electrical voltage states of from one to eight shared interconnection pins. The name PinBus has been suggested and adopted for the proposed interface protocol. The protocol is defined through the presentation of state diagrams and the pins’ functional definitions. Both simulations and laboratory demonstrations are being conducted to demonstrate the elegance and power of the suggested approach. PinBus supports a very high degree of interoperability across its interfaces, allowing innumerable pairings of devices and communication protocols and supporting the practice of practically any smart grid use case.

  10. New TPG bus route 28

    CERN Multimedia

    2003-01-01

    Geneva's Public Transport services (TPG) have recently inaugurated a new bus line 28, connecting the La Tour Hospital in Meyrin to the international organisations in Geneva, via the airport. All signs associated with this route will be yellow in colour. Timetables and route details can be found at http://www.tpg.ch. Relations with the Host States Service http://www.cern.ch/relations/ Tel. 72848

  11. 75 FR 23843 - Discretionary Bus and Bus Facilities Program

    Science.gov (United States)

    2010-05-04

    ... private non- profit organizations. This Notice includes priorities established by FTA for these... engaged in public transportation, or private non-profit organizations.'' B. Background Maintaining the... agencies, private non-profit organizations, and private providers engaged in public transportation....

  12. Bus Routes, Marta Bus Routes located in Transportation database, Published in unknown, City of Roswell, GA.

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — This Bus Routes dataset as of unknown. It is described as 'Marta Bus Routes located in Transportation database'. Data by this publisher are often provided in State...

  13. YUTONG BUS: Grateful To The Financial Crisis

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    Shenyin&Wanguo Securities issued an announcement on Jan 9 rating Yutong Bus(600066)as"buying",on the basis that the bus maker's gross profits went better in the last quarter of 2008 and to be further improved in the first quarter of 2009,with an increased market share. The report drew attention inside the in- dustry when the entire bus segment was suffering a tough time.

  14. Wishbone Bus Architecture - A Survey and Comparison

    Directory of Open Access Journals (Sweden)

    Mohandeep Sharma

    2012-05-01

    Full Text Available The performance of an on-chip interconnection architecture used for communication between IP cores depends on the efficiency of its bus architecture. Any bus architecture having advantages of faster bus clock speed, extra data transfer cycle, improved bus width and throughput is highly desirable for a low cost, reduced time-to-market and efficient System-on-Chip (SoC. This paper presents a survey of WISHBONE bus architecture and its comparison with three other on-chip bus architectures viz. Advanced Microcontroller Bus Architecture (AMBA by ARM, CoreConnect by IBM and Avalon by Altera. The WISHBONE Bus Architecture by Silicore Corporation appears to be gaining an upper edge over the other three bus architecture types because of its special performance parameters like the use of flexible arbitration scheme and additional data transfer cycle (Read-Modify-Write cycle. Moreover, its IP Cores are available free for use requiring neither any registration nor any agreement or license.

  15. Priority arbitration mechanism

    Science.gov (United States)

    Garmire, Derrick L.; Herring, Jay R.; Stunkel, Craig B.

    2007-03-06

    A method is provided for selecting a data source for transmission on one of several logical (virtual) lanes embodied in a single physical connection. Lanes are assigned to either a high priority class or to a low priority class. One of six conditions is employed to determine when re-arbitration of lane priorities is desired. When this occurs a next source for transmission is selected based on a the specification of the maximum number of high priority packets that can be sent after a lower priority transmission has been interrupted. Alternatively, a next source for transmission is selected based on a the specification of the maximum number of high priority packets that can be sent while a lower priority packet is waiting. If initialized correctly, the arbiter keeps all of the packets of a high priority packet contiguous, while allowing lower priority packets to be interrupted by the higher priority packets, but not to the point of starvation of the lower priority packets.

  16. Mastering NServiceBus and persistence

    CERN Document Server

    Helton, Rich

    2014-01-01

    This book is intended for developers, designers, and architects alike who wish to build C# NServiceBus enterprise architectures and learn how ESB persists data and messages to help them attain their goals. No prior knowledge of persistence in NServiceBus is required.

  17. Reducing transit bus emissions: Alternative fuels or traffic operations?

    Science.gov (United States)

    Alam, Ahsan; Hatzopoulou, Marianne

    2014-06-01

    In this study, we simulated the operations and greenhouse gas (GHG) emissions of transit buses along a busy corridor and quantified the effects of two different fuels (conventional diesel and compressed natural gas) as well as a set of driving conditions on emissions. Results indicate that compressed natural gas (CNG) reduces GHG emissions by 8-12% compared to conventional diesel, this reduction could increase to 16% with high levels of traffic congestion. However, the benefits of switching from conventional diesel to CNG are less apparent when the road network is uncongested. We also investigated the effects of bus operations on emissions by applying several strategies such as transit signal priority (TSP), queue jumper lanes, and relocation of bus stops. Results show that in congested conditions, TSP alone can reduce GHG emissions by 14% and when combined with improved technology; a reduction of 23% is achieved. The reduction benefits are even more apparent when other transit operational improvements are combined with TSP. Finally a sensitivity analysis was performed to investigate the effect of operational improvements on emissions under varying levels of network congestion. We observe that under “extreme congestion”, the benefits of TSP decrease.

  18. High speed bus technology development

    Science.gov (United States)

    Modrow, Marlan B.; Hatfield, Donald W.

    1989-09-01

    The development and demonstration of the High Speed Data Bus system, a 50 Million bits per second (Mbps) local data network intended for avionics applications in advanced military aircraft is described. The Advanced System Avionics (ASA)/PAVE PILLAR program provided the avionics architecture concept and basic requirements. Designs for wire and fiber optic media were produced and hardware demonstrations were performed. An efficient, robust token-passing protocol was developed and partially demonstrated. The requirements specifications, the trade-offs made, and the resulting designs for both a coaxial wire media system and a fiber optics design are examined. Also, the development of a message-oriented media access protocol is described, from requirements definition through analysis, simulation and experimentation. Finally, the testing and demonstrations conducted on the breadboard and brassboard hardware is presented.

  19. Radiation-Tolerant Dual Data Bus

    Science.gov (United States)

    Kinstler, Gary A.

    2007-01-01

    An architecture, and a method of utilizing the architecture, have been proposed to enable error-free operation of a data bus that includes, and is connected to, commercial off-the-shelf (COTS) circuits and components that are inherently susceptible to singleevent upsets [SEUs (bit flips caused by impinging high-energy particles and photons)]. The architecture and method are applicable, more specifically, to data-bus circuitry based on the Institute for Electrical and Electronics Engineers (IEEE) 1394b standard for a high-speed serial bus.

  20. Drivetrain system of an ultracapacitor electric bus

    Institute of Scientific and Technical Information of China (English)

    Kong Zhigu; Zhu Chunbo; Yang Shiyan; Cheng Shukang

    2007-01-01

    This paper proposed a design of the drivetrain system of an electric bus with ultracapacitor (UC) as the only on-board power source. The system includes three main parts, namely, UC bank, motor and the converter, vehicle management unit (VMU). Analyses results in detail on the functional design and experiments on work bench of each part were also presented, which validated the reliability of the system. Furthermore, driving results in field of the bus verified the feasibility of the design of the drivetrain system. The bus has very good dynamic performances and shows a promising applications prospect in the short and medium route buses system.

  1. Priority in Process Algebras

    Science.gov (United States)

    Cleaveland, Rance; Luettgen, Gerald; Natarajan, V.

    1999-01-01

    This paper surveys the semantic ramifications of extending traditional process algebras with notions of priority that allow for some transitions to be given precedence over others. These enriched formalisms allow one to model system features such as interrupts, prioritized choice, or real-time behavior. Approaches to priority in process algebras can be classified according to whether the induced notion of preemption on transitions is global or local and whether priorities are static or dynamic. Early work in the area concentrated on global pre-emption and static priorities and led to formalisms for modeling interrupts and aspects of real-time, such as maximal progress, in centralized computing environments. More recent research has investigated localized notions of pre-emption in which the distribution of systems is taken into account, as well as dynamic priority approaches, i.e., those where priority values may change as systems evolve. The latter allows one to model behavioral phenomena such as scheduling algorithms and also enables the efficient encoding of real-time semantics. Technically, this paper studies the different models of priorities by presenting extensions of Milner's Calculus of Communicating Systems (CCS) with static and dynamic priority as well as with notions of global and local pre- emption. In each case the operational semantics of CCS is modified appropriately, behavioral theories based on strong and weak bisimulation are given, and related approaches for different process-algebraic settings are discussed.

  2. BUS 1000母线保护的应用%Application of BUS 1000 Bus-Bar Protection

    Institute of Scientific and Technical Information of China (English)

    马晓光; 张贵金; 冷雪玉

    2001-01-01

    发电厂的母线是电厂中的一个重要组成元件,当母线上发生故障时,将使连接在故障母线上的所有元件在修复故障母线期间,或转换到另一组母线上运行以前遭到停电。同时还可能破坏系统稳定,造成严重后果。因此,母线保护装置是正确迅速切除母线故障的重要装置,它的拒动或误动将给电力系统带来严重危害。详细介绍了华能丹东发电厂350 MW发电机组采用的BUS 1000型母线保护的原理,并对其正常运行及区内、外故障、断路器失灵保护、母联断路器过流保护等几个方面作了详细分析。%Bus bar is an important component in e lectric power plant.When bus bar fault occurs,all components connected on the fa ulty bus bar will be in outage until power restores by repairing the faulty bus bar or switching them over to another bus bar.Furthermore,it may cause the destr uction of system stability resulting in serious consequence.Bus bar protection d evice is the very device to quickly remove bus bar faults,and its malfunctioning will bring serious harm to power system. The principle of BUS 1000 bus bar prot ection used for 350 MW unit of dandong power plant is introduced.Its normal oper ation and several aspects,such as in-and out-area faults,out-of-order breake r protection,bus bar breaker over-current protection,are analyzed in detail.

  3. Incremental bus service design: combining limited-stop and local bus services

    OpenAIRE

    Chiraphadhanakul, Virot; Barnhart, Cynthia

    2013-01-01

    Long in-vehicle travel times resulting from frequent stops make bus service an unattractive choice for many commuters. Limited-stop bus services however have the advantage of shorter in-vehicle times experienced by passengers. In this work, we seek to modify a given bus service by optimally reassigning some number of bus trips, as opposed to providing additional trips, to operate a limited-stop service. We propose an optimization model to determine a limited-stop service route to be operated ...

  4. BUS 599 STRAYER Course Tutorial/TutorialRank

    OpenAIRE

    alfonos

    2015-01-01

    For more course tutorials visit www.tutorialrank.com Tutorial Purchased: 4 Times, Rating: A+ STRAYER BUS 599 Week 1 Assignment Crafting and Executing Strategy Case JetBlue Airways STRAYER BUS 599 Week 2 Assignment Competitive Forces and SWOT Analysis Case Whole Foods Market STRAYER BUS 599 Week 3 Assignment Foreign Market Entry and Diversification Case Corona Beer STRAYER BUS 599 Week 4 Assignment HRM Issues Diversification Strategies Case Nucor Corporation STRAYER BUS 5...

  5. DESIGN AND EXPERIMENT OF ELECTRIC BUS

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    Performance and reliability experiments on BJD-6100EV electric buses, jointly developed by Beijing Institute of Technology and Beijing Public Transport Company, are introduced. Output power model of battery pack is established and maximum output power is analyzed. A permanent magnetic direct current (PMDC) motor with enhanced windings is developed for the bus. Torque-speed characteristics of the motor are modeled and performance of electric bus is analyzed. Computational method of the range of electric bus is proposed and discussed. Experiments show that electric bus can realize design requirements. Computational methods are verified with the help of field test. It is expected that design and computation method will provide helpful reference to development of electric vehicles.

  6. Systems evaluation of thermal bus concepts

    Science.gov (United States)

    Stalmach, D. D.

    1982-01-01

    Thermal bus concepts, to provide a centralized thermal utility for large, multihundred kilowatt space platforms, were studied and the results are summarized. Concepts were generated, defined, and screened for inclusion in system level thermal bus trades. Parametric trade studies were conducted in order to define the operational envelope, performance, and physical characteristics of each. Two concepts were selected as offering the most promise for thermal bus development. All of four concepts involved two phase flow in order to meet the required isothermal nature of the thermal bus. Two of the concepts employ a mechanical means to circulate the working fluid, a liquid pump in one case and a vapor compressor in another. Another concept utilizes direct osmosis as the driving force of the thermal bus. The fourth concept was a high capacity monogroove heat pipe. After preliminary sizing and screening, three of these concepts were selected to carry into the trade studies. The monogroove heat pipe concept was deemed unsuitable for further consideration because of its heat transport limitations. One additional concept utilizing capillary forces to drive the working fluid was added. Parametric system level trade studies were performed. Sizing and weight calculations were performed for thermal bus sizes ranging from 5 to 350 kW and operating temperatures in the range of 4 to 120 C. System level considerations such as heat rejection and electrical power penalties and interface temperature losses were included in the weight calculations.

  7. Dynamic Bus Travel Time Prediction Models on Road with Multiple Bus Routes.

    Science.gov (United States)

    Bai, Cong; Peng, Zhong-Ren; Lu, Qing-Chang; Sun, Jian

    2015-01-01

    Accurate and real-time travel time information for buses can help passengers better plan their trips and minimize waiting times. A dynamic travel time prediction model for buses addressing the cases on road with multiple bus routes is proposed in this paper, based on support vector machines (SVMs) and Kalman filtering-based algorithm. In the proposed model, the well-trained SVM model predicts the baseline bus travel times from the historical bus trip data; the Kalman filtering-based dynamic algorithm can adjust bus travel times with the latest bus operation information and the estimated baseline travel times. The performance of the proposed dynamic model is validated with the real-world data on road with multiple bus routes in Shenzhen, China. The results show that the proposed dynamic model is feasible and applicable for bus travel time prediction and has the best prediction performance among all the five models proposed in the study in terms of prediction accuracy on road with multiple bus routes.

  8. Sexual Harassment on the School Bus: Supporting and Preparing Bus Drivers to Respond Appropriately

    Science.gov (United States)

    Allen, Melissa; Young, Ellie L.; Ashbaker, Betty Y.; Heaton, Emily; Parkinson, Marisa

    2003-01-01

    Sexual harassment is commonplace in schools, particularly among adolescents. Although information on this topic is typically gathered from students and teachers, this study collected information from school bus drivers. Based on feedback from 58 school bus drivers, 39 (67%) reported observing students making sexual comments or jokes. Almost half…

  9. Bullying and Aggression on the School Bus: School Bus Drivers' Observations and Suggestions

    Science.gov (United States)

    deLara, Ellen

    2008-01-01

    Every school day bus drivers are responsible for transporting children safely over many miles, yet they are rarely polled for their opinions or contributions to school safety. School bus drivers are in a unique position to inform the discussion on aggressive behavior during the school day. This exploratory study collected information from school…

  10. Distributed Priority Synthesis

    Directory of Open Access Journals (Sweden)

    Harald Ruess

    2012-11-01

    Full Text Available Given a set of interacting components with non-deterministic variable update and given safety requirements, the goal of priority synthesis is to restrict, by means of priorities, the set of possible interactions in such a way as to guarantee the given safety conditions for all possible runs. In distributed priority synthesis we are interested in obtaining local sets of priorities, which are deployed in terms of local component controllers sharing intended next moves between components in local neighborhoods only. These possible communication paths between local controllers are specified by means of a communication architecture. We formally define the problem of distributed priority synthesis in terms of a multi-player safety game between players for (angelically selecting the next transition of the components and an environment for (demonically updating uncontrollable variables. We analyze the complexity of the problem, and propose several optimizations including a solution-space exploration based on a diagnosis method using a nested extension of the usual attractor computation in games together with a reduction to corresponding SAT problems. When diagnosis fails, the method proposes potential candidates to guide the exploration. These optimized algorithms for solving distributed priority synthesis problems have been integrated into the VissBIP framework. An experimental validation of this implementation is performed using a range of case studies including scheduling in multicore processors and modular robotics.

  11. Designing Bus Structure for Digital Controller of Nuclear Power Plant

    International Nuclear Information System (INIS)

    In this paper, the bus structure design for the digital controller of Nuclear Power Plant (NPP) is proposed. The most important portion is the bus in the digital controller. A bus is responsible for transmission data among the various Input/Output (I/O) board, Processor board and Communication board. An existing bus is a parallel bus structure such as the VERSA Module Euro (VME) bus and an extended Static Random Access Memory (SRAM) Controller. Central Processing Unit (CPU) processing speed and communication speed is faster than before, but the parallel bus has a speed limit. Because it is the physically lines shared and the weakness about reflected wave. That is, use of the parallel bus has been the cause of the performance degradation of system. To solve the parallel bus problem, the bus has been developed by serial. The configuration of transceiver logic was simplified by not share the bus that all boards and processor boards was connected to the point-to-point. Serial bus was configured using physically Low Voltage Differential Signaling (LVDS). The speed limit of bus was broken by the LVDS what is consisted of a strong against the reflected-wave of signal, noise and etc. Each channel of bus has a different speed mode and is able to set a required transmission way. Different transmission ways of each channel are able to transmit data to match the required response time of system. The LVDS speed has about basically 1Gbps but the bus was composed with less than 50Mbps considering the environmental characteristics of nuclear. It was shown that the configuration of the serial bus was the performance and the reliability more improving than parallel bus

  12. Priorities of statutory claimants

    International Nuclear Information System (INIS)

    The statutory rights that unpaid creditors have when an oil or gas operator is placed in bankruptcy, were evaluated. Those statutory rights may give priority to their claims against the operator. Fifteen topics dealing with statutory priorities were examined, focusing on the change in priorities which would occur if the insolvent operator were placed in bankruptcy. The topics were: (1) Summary of statutory federal and provincial priorities, (2) Revenue Canada - source deductions/deemed trust, (3) Revenue Canada - source deductions/enhanced requirement to pay, (4) Revenue Canada - goods and service tax (GST)/deemed trust, (5) Revenue Canada - GST/enhanced requirement to pay, (6) Federal income taxes, (7) Validity of provincially legislated priority provisions in bankruptcy, (8) Provincially authorized municipal taxes - real property, (9) Provincial workers' compensation board, (10) Provincially legislated wages, overtime pay and holiday pay, (11) Provincially legislated severance/termination pay, (12) Provincially legislated successor employer obligations, (13) Provincially legislated private employment pension plans, (14) Provincial health care insurance premiums, and (15) Provincial freehold mineral rights tax

  13. Statistical Analysis of Bus Networks in India

    CERN Document Server

    Chatterjee, Atanu; Ramadurai, Gitakrishnan

    2015-01-01

    Through the past decade the field of network science has established itself as a common ground for the cross-fertilization of exciting inter-disciplinary studies which has motivated researchers to model almost every physical system as an interacting network consisting of nodes and links. Although public transport networks such as airline and railway networks have been extensively studied, the status of bus networks still remains in obscurity. In developing countries like India, where bus networks play an important role in day-to-day commutation, it is of significant interest to analyze its topological structure and answer some of the basic questions on its evolution, growth, robustness and resiliency. In this paper, we model the bus networks of major Indian cities as graphs in \\textit{L}-space, and evaluate their various statistical properties using concepts from network science. Our analysis reveals a wide spectrum of network topology with the common underlying feature of small-world property. We observe tha...

  14. High speed data bus design validation

    Science.gov (United States)

    Stevens, Rick

    The SAE Linear Implementation Task Group has developed the SAE Linear Token Passing Multiplex Data Bus Standard (AS4074.1) and is currently working on a validation plan. This validation plan will define the test requirements for determining that an implementation of the standard meets the requirements of SAE AS4074.1. Once completed, the test requirements contained in this plan will be executed on bus interface units (BIUs) for validation purposes. In the present work, the author describes the use of a validation model that incorporates many of the capabilities of the validation test plan. This model can also be thought of as a VHDL (VHSIC Hardware Description Language) behavioral representation of the SAE Linear Token Passing Multiplex Data Bus Standard. It is tightly coupled to the standard and provides a model that can be used during the BIU development to validate the design.

  15. Risk factors affecting fatal bus accident severity: Their impact on different types of bus drivers.

    Science.gov (United States)

    Feng, Shumin; Li, Zhenning; Ci, Yusheng; Zhang, Guohui

    2016-01-01

    While the bus is generally considered to be a relatively safe means of transportation, the property losses and casualties caused by bus accidents, especially fatal ones, are far from negligible. The reasons for a driver to incur fatalities are different in each case, and it is essential to discover the underlying risk factors of bus fatality severity for different types of drivers in order to improve bus safety. The current study investigates the underlying risk factors of fatal bus accident severity to different types of drivers in the U.S. by estimating an ordered logistic model. Data for the analysis are retrieved from the Buses Involved in Fatal Accidents (BIFA) database from the USA for the years 2006-2010. Accidents are divided into three levels by counting their equivalent fatalities, and the drivers are classified into three clusters by the K-means cluster analysis. The analysis shows that some risk factors have the same impact on different types of drivers, they are: (a) season; (b) day of week; (c) time period; (d) number of vehicles involved; (e) land use; (f) manner of collision; (g) speed limit; (h) snow or ice surface condition; (i) school bus; (j) bus type and seating capacity; (k) driver's age; (l) driver's gender; (m) risky behaviors; and (n) restraint system. Results also show that some risk factors only have impact on the "young and elder drivers with history of traffic violations", they are: (a) section type; (b) number of lanes per direction; (c) roadway profile; (d) wet road surface; and (e) cyclist-bus accident. Notably, history of traffic violations has different impact on different types of bus drivers. PMID:26513334

  16. Design of E-City Bus Tracking System

    Directory of Open Access Journals (Sweden)

    Shekhar Shinde

    2014-04-01

    Full Text Available E-city bus tracking system will serve as a viable notification system that will effectively assist passengers in making the decision of whether to wait for the bus or not. This system is a standalone system designed to display the real-time location(s of the buses with the use of GSM module technology. The system will consist of an IR transmitter module installed on the buses, receiver boards installed on the bus stops and GSM receiver connected with PC monitoring the whole arrangement. It will also have passenger information system software installed at the bus stops and which will provide user the relevant information regarding all the bus numbers going for his source to destination along with the route details. It will also transmit its bus numbers and route names, with the help of LED transmitter, continuously as soon as the bus comes within the range of the receiver at the bus stop.

  17. The Bus Station Spacing Optimization Based on Game Theory

    Directory of Open Access Journals (Sweden)

    Changjiang Zheng

    2015-01-01

    Full Text Available With the development of city, the problem of traffic is becoming more and more serious. Developing public transportation has become the key to solving this problem in all countries. Based on the existing public transit network, how to improve the bus operation efficiency, and reduce the residents transit trip cost has become a simple and effective way to develop the public transportation. Bus stop spacing is an important factor affecting passengers’ travel time. How to set up bus stop spacing has become the key to reducing passengers’ travel time. According to comprehensive traffic survey, theoretical analysis, and summary of urban public transport characteristics, this paper analyzes the impact of bus stop spacing on passenger in-bus time cost and out-bus time cost and establishes in-bus time and out-bus time model. Finally, the paper gets the balance best station spacing by introducing the game theory.

  18. Fast meldable priority queues

    DEFF Research Database (Denmark)

    Brodal, Gerth Stølting

    1995-01-01

    We present priority queues that support the operations Find-Min, Insert, MakeQueue and Meld in worst case time O(1) and Delete and DeleteMin in worst case time O(log n). They can be implemented on the pointer machine and require linear space. The time bounds are optimal for all implementations wh...... where Meld takes worst case time o(n). To our knowledge this is the first priority queue implementation that supports Meld in worst case constant time and DeleteMin in logarithmic time....

  19. Membrane Automata with Priorities

    Institute of Scientific and Technical Information of China (English)

    Luděk Cienciala; Lucie Ciencialová

    2004-01-01

    In this paper the one-way P automata with priorities are introduced. Such automata are P systemshere the membranes are only allowed to consume objects from parent membranes, under the given conditions. The result of computation of these systems is the set of multiset sequences consumed by skin membrane intc the system. The rules associated in some order with each membrane cannot modify any objects, they can only move them through membrane. We show that P automata with priorities and two membranes can accept every recursively enumerated language.

  20. Solid Earth: The priorities

    Science.gov (United States)

    Paquet, P.

    1991-10-01

    The European Space Agency's strategy concerning the solid Earth program is reviewed. Improvement of current knowledge of the global geopotential fields, both gravity and magnetic, was stressed as the highest priority. It was agreed that the objectives and goals of the planned Aristoteles mission correspond to this priority, and the need to realize this part of the program was stated. The interdisciplinary links of the program were identified, and it was decided that this program could make substantial contributions to research of oceans, climate and global change, atmosphere, ice and land surfaces.

  1. Secure Bus-Ticketing System using NFC

    Directory of Open Access Journals (Sweden)

    Monalisa Lopes

    2015-04-01

    Full Text Available For making the day to day life more convenient for the passengers travelling in bus some technologies can be used like Near Field Communication (NFC, Radio Frequency Identification (RFID. The proposed system is based on ticketing and identification of passengers in public transport. The system suggest a user friendly automated ticketing system which will automatically deduct the passengers fare according to the distance travelled as well as detect the passengers detail information. The system also helps to calculate the total revenue of a single bus in a day. Another important aspect is reusability, which helps use ticket multiple times as it is rechargeable.

  2. NOC AND BUS ARCHITECTURE: A COMPARISON

    Directory of Open Access Journals (Sweden)

    RAJEEV KAMAL

    2012-04-01

    Full Text Available Network-on-chip designs promise to offer considerable advantages over the traditional bus-based architecture. As continuing scaling of Moore’s law enables ever greater transistor densities, design complexity, power limitations and application convergence networks have started to replace busses in much smaller systems and the enhancement of NoC. This paper summarizes the advantages of the NoC and the limitations of traditional bus based architecture. In this paper we discuss a detailed comparison of area, power, scalability andperformance of traditional busses in comparison with NoC.

  3. An Efficient Segmental Bus-Invert Coding Method for Instruction Memory Data Bus Switching Reduction

    Directory of Open Access Journals (Sweden)

    Gu Ji

    2009-01-01

    Full Text Available Abstract This paper presents a bus coding methodology for the instruction memory data bus switching reduction. Compared to the existing state-of-the-art multiway partial bus-invert (MPBI coding which relies on data bit correlation, our approach is very effective in reducing the switching activity of the instruction data buses, since little bit correlation can be observed in the instruction data. Our experiments demonstrate that the proposed encoding can reduce up to 42% of switching activity, with an average of 30% reduction, while MPBI achieves just 17.6% reduction in switching activity.

  4. Air quality on bus routes in Umea, Sweden

    Energy Technology Data Exchange (ETDEWEB)

    Sandberg, H.; Forsberg, B. [Dept. of Environmental Health and Dept. of Public Health and Clinical Medicine, Umea University SE, Umea (Sweden)

    2000-07-01

    Bus traffic in some local streets with up to 650 buses per day has resulted in complaints about air pollution and suggestions from residents that the bus routes should be changed to other streets. We have studied nitrogen dioxide and benzene concentrations at five exposed sites and at two representative control sites without bus traffic, and found no general differences in air quality. However, the site and temperature adjusted concentrations fell significantly during a strike among bus drivers. (authors)

  5. Framework for Bus Rapid Transit Development and Deployment Planning

    OpenAIRE

    Miller, Mark A.; Yin, Yafeng; Balvanyos, Tunde; Ceder, Avishai

    2004-01-01

    This report presents the results of its investigation into deployment planning for bus rapid transit systems. In this study, we conducted a macro-scale examination of bus rapid transit systems from technical, operational, institutional, and planning perspectives. We then developed the theoretical foundation for a deployment planning framework for bus rapid transit systems that specifically takes into account the unique features of bus rapid transit that differ from other transit alternatives....

  6. Compressed Natural Gas (CNG) Transit Bus Experience Survey: April 2009--April 2010

    Energy Technology Data Exchange (ETDEWEB)

    Adams, R.; Horne, D. B.

    2010-09-01

    This survey was commissioned by the U.S. Department of Energy (DOE) and the National Renewable Energy Laboratory (NREL) to collect and analyze experiential data and information from a cross-section of U.S. transit agencies with varying degrees of compressed natural gas (CNG) bus and station experience. This information will be used to assist DOE and NREL in determining areas of success and areas where further technical or other assistance might be required, and to assist them in focusing on areas judged by the CNG transit community as priority items.

  7. Bus Stops, This shapefile contains existing bus stops for Charlotte Area Transit System, Published in 2006, Charlotte Area Transit System.

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — This Bus Stops dataset, was produced all or in part from Field Survey/GPS information as of 2006. It is described as 'This shapefile contains existing bus stops for...

  8. Peptic ulcer among urban bus drivers in Denmark

    DEFF Research Database (Denmark)

    Netterstrøm, Bo; Juel, K

    1990-01-01

    As part of a survey on the work environment of bus drivers, 2045 (83%) of 2465 male bus drivers in the three major cities in Denmark in 1978 answered a postal questionnaire on health and working conditions. In order to evaluate the relative occurrence of peptic ulcer among the bus drivers, a follow...

  9. Research Priorities for Endometriosis

    DEFF Research Database (Denmark)

    Rogers, Peter A W; Adamson, G David; Al-Jefout, Moamar;

    2016-01-01

    The 3rd International Consensus Workshop on Research Priorities in Endometriosis was held in São Paulo on May 4, 2014, following the 12th World Congress on Endometriosis. The workshop was attended by 60 participants from 19 countries and was divided into 5 main sessions covering pathogenesis/path...

  10. An appraisal of QR code use to deliver bus arrival time information at bus stops in Southampton

    OpenAIRE

    Gammer, Nick

    2011-01-01

    The provision of at-stop bus arrival time information has numerous potential benefits to bus users. With real-time passenger information well established in the UK the challenge is relaying accurate bus arrival times to passengers in a cost effective manner. Display screens are costly to install and maintain, rendering placement at all bus stops economically undesirable. QR codes represent an inexpensive alternative to delivering this information, usually at zero marginal cost to users. Q...

  11. FUEL CELL BUS DEMONSTRATION IN MEXICO CITY

    Science.gov (United States)

    The report discusses the performance of a cull-size, zero-emission, Proton Exchange Membrane (PEM) fuel-cell-powered transit bus in the atmospheric environment of Mexico City. To address the air quality problems caused by vehicle emissions in Mexico City, a seminar on clean vehic...

  12. Inrush-Current Limiter And Bus Isolator

    Science.gov (United States)

    Dolland, Carlisle R.

    1994-01-01

    Electronic circuit protects electrical power bus and source of power against excessive current demands. Circuit intended for use with power-consuming electronic system drawing pulsed currents and including capacitor bank as low-impedance secondary source from which pulsed currents drawn.

  13. Repeater For A Digital-Communication Bus

    Science.gov (United States)

    Torres-Guzman, Esteban; Olson, Stephen; Heaps, Tim

    1993-01-01

    Digital repeater circuit designed to extend range of communication on MIL-STD-1553 bus beyond original maximum allowable length of 300 ft. Circuit provides two-way communication, one way at time, and conforms to specifications of MIL-STD-1553. Crosstalk and instability eliminated.

  14. Virginia School Bus Driver Training: Does Training Program Adequacy Affect school Bus Accident Rates?

    OpenAIRE

    Crews, James O

    1997-01-01

    Analysis of data provided by the Virginia Departments of Motor Vehicles, Transportation, and Education all show school buses as having a significantly higher number of accidents per hundred million miles of travel than other forms of transportation. Such statistics are alarming and formal study of school bus accident factors has been limited. The purposes of this study were to (a) establish the adequacy of the school bus driver training programs of Local Education Agencies(LEAs...

  15. Bus 54 -- Where are you? A school bus intelligent information system

    Energy Technology Data Exchange (ETDEWEB)

    Truett, L.F.; Moore, S.; Tonn, B. [Oak Ridge National Lab., TN (United States); Conley, T. [GTE Wireless, Nashville, TN (United States)

    1998-07-01

    Although major accidents involving school buses are rare (only about 0.3% of all fatal crashes since 1986 are classified as school-bus-related), even minor accidents and breakdowns cause a great deal of parental anxiety. The objective of this research is to design an efficient, cost-effective, accurate, and secure system that will track individual school buses and communicate appropriate information to the school system`s central administration unit, to the school transportation administrator, and to parents of children on the bus. The greatest benefit of the proposed information system is that parents and officials can always know the location and condition (these conditions would vary depending on the needs of a particular school system) of the school buses. In case of an accident or mechanical problem, when emergency crews are needed, they can be dispatched almost immediately with a good understanding of the problem and the exact location of the bus. In addition to being able to track the bus while the child is on board, parents will be able to determine the location of their child`s bus prior to its arrival in the morning in order to prevent the child from needing to wait outside in inclement weather. The information available to parents can also be expanded to include maps of limited routes (e.g., snow routes). Basically, the Bus 54 concept consists of a bus component and a central data processing unit. Each bus will be outfitted with a global positioning satellite (GPS) device, a wireless communication device, and wireless data communication service. The central data processing unit will receive and process information from the buses and provide information access to parents and officials via an Internet link.

  16. Advanced eGovernment Information Service Bus (eGov-Bus

    Directory of Open Access Journals (Sweden)

    2007-01-01

    Full Text Available The eGov-Bus project provides citizens and businesses with improved access to virtual public services, which are based on existing national eGovernment Web services and which support cross-border life events. Requirements and specific rules of these life events are considered, and personalization of user preferences is supported. eGov-Bus is based on adaptable process management technologies, allowing for virtual services which are dynamically combined from existing national eGovernment services. In this way, a comprehensive workflow process is set up, allowing for service-level agreements, an audit trail and explanation of the process to the end user. The eGov-Bus process engine operates on top of a virtual repository, providing a high-level semantic view of information retrieved from heterogeneous information sources, such as eGovernment Web services. Further, eGov-Bus relies on a security framework to ensure all high-level security requirements are met. The eGov-Bus architecture is business oriented, it focuses on Service Oriented Architecture (SOA concepts, asynchronously combining Web services and providing a Service Bus.

  17. Regenerative polymeric bus architecture for board-level optical interconnects.

    Science.gov (United States)

    Bamiedakis, N; Hashim, A; Penty, R V; White, I H

    2012-05-21

    A scalable multi-channel optical regenerative bus architecture based on the use of polymer waveguides is presented for the first time. The architecture offers high-speed interconnection between electrical cards allowing regenerative bus extension with multiple segments and therefore connection of an arbitrary number of cards onto the bus. In a proof-of-principle demonstration, a 4-channel 3-card polymeric bus module is designed and fabricated on standard FR4 substrates. Low insertion losses (≤ -15 dB) and low crosstalk values (bus modules using a prototype 3R regenerator.

  18. Heat Transfer in the LHC Main Superconducting Bus Bars

    CERN Document Server

    Granieri, P P; Richter, D

    2011-01-01

    CERN is performing a systematic analysis of the interconnecting bus bars of the Large Hadron Collider (LHC) main magnets. Their thermal, electrical, mechanical and hydraulic performances are addressed. In the frame of these studies, the heat transfer between the main superconducting (SC) bus bars and the surrounding He bath is investigated. It represents a key parameter in the comprehension of the bus bars stability and quench propagation mechanisms, thus crucial for the analysis of the 2008 incident which was triggered by a defective bus bars joint. This paper reports on the experimental tests and relative analysis aiming at describing the thermal behavior of the LHC main bus bars.

  19. Energy efficiency of different bus subsystems in Belgrade public transport

    Directory of Open Access Journals (Sweden)

    Mišanović Slobodan M.

    2015-01-01

    Full Text Available Research in this paper comprised experimental determination of energy efficiency of different bus subsystems (diesel bus, trolleybus and fully electric bus on chosen public transport route in Belgrade. Experimental measuring of energy efficiency of each bus type has been done based on the analysis of parameters of vehicle driving cycles between stops. Results of this analysis were basis for development of theoretical simulation model of energy efficiency. The model was latter compared with the results of simulation done by "Solaris bus & Coach" company for the chosen electric bus route. Based on demonstrated simulation, characteristics of electric bus batteries were defined, the method and dynamic of their recharge was suggested, as well as choice for other aggregates for drive system and technical characteristics for the electric buses were suggested.

  20. Micronutrient bioavailability research priorities.

    Science.gov (United States)

    Casgrain, Amélie; Collings, Rachel; Harvey, Linda J; Boza, Julio J; Fairweather-Tait, Susan J

    2010-05-01

    A micronutrient bioavailability workshop, which involved international experts and members of the scientific community and the food industry, with interactive breakout sessions based on synectics principles, was organized by the International Life Sciences Institute Europe Addition of Nutrients to Food Task Force and the European Commission Network of Excellence European Micronutrient Recommendations Aligned. After presentations by experts, a series of "challenge statements" was discussed. The aim was to address topical issues, in particular those that linked bioavailability with the derivation of micronutrient requirements and dietary recommendations, to identify gaps in knowledge and to consider research priorities. Several generic research priorities were identified, including improving the quality of dietary surveys/food composition tables, the need for more metabolic studies that use stable isotopes and high-quality longer-term interventions, and the development of multifactorial mathematical models. Among the common recurrent factors identified as important were polymorphisms/genotype, consideration of the whole diet, chemical form of the micronutrient, and the determination of physiologic requirements. The involvement of all participants in the structured discussions ensured a broad overview of current knowledge, state-of-the-art research, and consideration of priorities for future research. PMID:20200267

  1. A Survey on Priority Queues

    DEFF Research Database (Denmark)

    Brodal, Gerth Stølting

    2013-01-01

    Back in 1964 Williams introduced the binary heap as a basic priority queue data structure supporting the operations Insert and ExtractMin in logarithmic time. Since then numerous papers have been published on priority queues. This paper tries to list some of the directions research on priority...

  2. 15 CFR 700.11 - Priority ratings.

    Science.gov (United States)

    2010-01-01

    ... OF INDUSTRY AND SECURITY, DEPARTMENT OF COMMERCE NATIONAL SECURITY INDUSTRIAL BASE REGULATIONS DEFENSE PRIORITIES AND ALLOCATIONS SYSTEM Industrial Priorities § 700.11 Priority ratings. (a) Levels...

  3. BUS 475 UOP Course Tutorial/ Tutorialrank

    OpenAIRE

    john

    2015-01-01

    For more course tutorials visit www.tutorialrank.com Tutorial Purchased: 6 Times, Rating: A+   BUS 475 Capstone Final Examination Part 1   1.    In the managerial function of __________, managers encourage and motivate workers to work toward organizational goals.   2.    eBay.com is a vast auction site that is similar to a competitive market in some ways but differs from it in others. Which of the following describes...

  4. Exposure Assessment of Diesel Bus Emissions

    Directory of Open Access Journals (Sweden)

    Werner Hofmann

    2006-12-01

    Full Text Available The goal of this study was to measure ultrafine particle concentrations with diameters less than 1 μm emitted by diesel buses and to assess resulting human exposure levels. The study was conducted at the Woolloongabba Busway station in Brisbane, Australia in the winter months of 2002 during which temperature inversions frequently occurred. Most buses that utilize the station are fuelled by diesel, the exhaust of which contains a significant quantity of particle matter. Passengers waiting at the station are exposed to these particles emitted from the buses. During the course of this study, passenger census was conducted, based on video surveillance, yielding person-by-person waiting time data. Furthermore, a bus census revealed accurate information about the total number of diesel versus Compressed Natural Gas (CNG powered buses. Background (outside of the bus station and platform measurements of ultrafine particulate number size distributions were made to determine ambient aerosol concentrations. Particle number exposure concentration ranges from 10 and 40 to 60% of bus related exhaust fumes. This changes dramatically when considering the particle mass exposure concentration, where most passengers are exposed to about 50 to 80% of exhaust fumes. The obtained data can be very significant for comparison with similar work of this type because it is shown in previous studies that exhaust emissions causes cancer in laboratory animals. It was assumed that significant differences between platform and background distributions were due to bus emissions which, combined with passenger waiting times, yielded an estimate of passenger exposure to ultrafine particles from diesel buses. From an exposure point of view, the Busway station analyzed resembles a street canyon. Although the detected exhaust particle concentration at the outbound platform is found to be in the picogram range, exposure increases with the time passengers spend on the platform

  5. Brazilian hybrid electric fuel cell bus

    Energy Technology Data Exchange (ETDEWEB)

    Miranda, P.E.V.; Carreira, E.S. [Coppe-Federal Univ. of Rio de Janeiro (Brazil). Hydrogen Lab.

    2010-07-01

    The first prototype of a hybrid electric fuel cell bus developed with Brazilian technology is unveiled. It is a 12 m urban-type, low-floor, air-conditioned bus that possesses three doors, air suspension, 29 seats and reversible wheelchair site. The bus body was built based on a double-deck type monoblock vehicle that is able to sustain important load on its roof. This allowed positioning of the type 3 hydrogen tanks and the low weight traction batteries on the roof of the vehicles without dynamic stabilization problems. A novel hybrid energy configuration was designed in such a way that the low-power (77 kWe) fuel cell works on steady-state operation mode, not responding directly to the traction motor load demand. The rate of kinetic energy regeneration upon breaking was optimized by the use of an electric hybrid system with predominance of batteries and also by utilizing supercapacitors. The electric-electronic devices and the security control softwares for the auxiliary and traction systems were developed in-house. The innovative hybrid-electric traction system configuration led to the possibility to decrease the fuel cell power, with positive impact on weight and system volume reduction, as well as to significantly decrease the hydrogen consumption. (orig.)

  6. Study of bus driving parameters on urban route

    OpenAIRE

    Fuad DASHDAMIROV

    2011-01-01

    The article deals with bus traffic time and speed on stage and route in the whole. The factors affecting bus driving parameters are divided into groups. The factors of significant impact are found in each group. The method of consideration of such factors impact on driving parameters in timetable making, is proposed. The extent of impact of selected factors on bus driving time and speed is studied.

  7. The SMART MIL-STD-1553 bus adapter hardware manual

    Science.gov (United States)

    Ton, T. T.

    1981-01-01

    The SMART Multiplexer Interface Adapter, (SMIA) a complete system interface for message structure of the MIL-STD-1553, is described. It provides buffering and storage for transmitted and received data and handles all the necessary handshaking to interface between parallel 8-bit data bus and a MIL-STD serial bit stream. The bus adapter is configured as either a bus controller of a remote terminal interface. It is coupled directly to the multiplex bus, or stub coupled through an additional isolation transformer located at the connection point. Fault isolation resistors provide short circuit protection.

  8. Examination of an Urban City Bus Operating Conditions and Emissions

    OpenAIRE

    Soylu, Seref (Coordinador); Bal, Ayda; Semercioglu, Hulya; Ay, Eyup Fatih

    2010-01-01

    It was observed that real world driving characteristics of the city bus don’t correlate well with that of the ETC, which is the certification cycle for the city bus engines. For this reason it is not realistic to expect emission levels lower than corresponding EURO standards from the city bus during real world driving. City bus NOx emissions in terms of grams per second are increasing with engine load and speed but the total NOx emissions for entire trip are the maximum at the locations whe...

  9. Multi-Gigabit Rate Radiation Hard Bus Project

    Data.gov (United States)

    National Aeronautics and Space Administration — High speed robust very low power radiation hardened bus interconnects are required to accelerate on-board computations, further improve reconfigurability and...

  10. Bus accident severity and passenger injury: evidence from Denmark

    DEFF Research Database (Denmark)

    Prato, Carlo Giacomo; Kaplan, Sigal

    2014-01-01

    light. Occurrence of injury to bus passengers is positively related to (i) the involvement of heavy vehicles, (ii) crossing intersections in yellow or red light, (iii) open areas, (iv) high speed limits, and (v) slippery road surface. Conclusions The findings of the current study provide a comprehensive...... examining occurrence of injury to bus passengers. Results Bus accident severity is positively related to (i) the involvement of vulnerable road users, (ii) high speed limits, (iii) night hours, (iv) elderly drivers of the third party involved, and (v) bus drivers and other drivers crossing in yellow or red...

  11. Status of the IEEE P896 Future Backplane Bus

    International Nuclear Information System (INIS)

    The IEEE P896 Future Backplane Bus project has been influenced by and has influenced FASTBUS and several other contemporary bus designs. This paper summarizes the current status of that project, which is directed toward the needs of modern 32-bit microprocessor systems with multiple processors. Some of the technology developed for P896 will be important for future non-ECL implementations of FASTBUS and other buses. In particular, new bus drivers and receivers should greatly improve the performance and reliability of backplane buses and cable buses. The current status of the P896 serial bus is also summarized

  12. Political priorities (NEXTGEN VOICES)

    DEFF Research Database (Denmark)

    Ren, Jingzheng

    2016-01-01

    …THE POLITICAL LEADERS of the local government of Chongqing, China, vigorously promote a low-carbon economy and sustainable development to mitigate environmental pollution. Accordingly, research grants focused on this issue were supported by the government, and our group obtained a grant for a pr...... for a project about industrial park planning and design.…In my view, political priorities based on correct decision-making and market requirements are beneficial for researchers.......…THE POLITICAL LEADERS of the local government of Chongqing, China, vigorously promote a low-carbon economy and sustainable development to mitigate environmental pollution. Accordingly, research grants focused on this issue were supported by the government, and our group obtained a grant...

  13. Social Priorities as Data

    Science.gov (United States)

    Grubert, E.

    2015-12-01

    Decision makers' responses to local risks and expected changes to a community from circumstances like natural hazards, human developments, and demographic changes can greatly affect social and environmental outcomes in a community. Translating physical data based in disciplines like engineering and geosciences into positive outcomes for communities can be challenging and often results in conflict that appears to pit "science" against "the public." Scientists can be reluctant to offer recommendations for action based on their work, often (and often correctly) noting that their role is not to make value judgments for a community - particularly for a community that is not their own. Conversely, decision makers can be frustrated by the lack of guidance they receive to help translate data into effective and acceptable action. The solution posed by this submission, given the goal of co-production of knowledge by scientists and decision makers to foster better community outcomes, is to involve the community directly by integrating social scientific methods that address decision making and community engagement to the scientist-decision maker interaction. Specifically, the missing dataset in many scientist-decision maker interactions is the nature of community priorities. Using scientifically valid methods to rigorously collect and characterize community priorities to help recommend tradeoffs between different outcomes indicated by the work of physical and natural scientists can bridge the gap between science and action by involving the community in the process. This submission presents early work on US preferences for different types of social and environmental outcomes designed to integrate directly with engineering and physical science frameworks like Life Cycle Assessment and Environmental Impact Statements. Cardinal preference data are based on surveys of US adults using tools like the Analytical Hierarchy Process, budget allocation, and ranking.

  14. Priority nutrition messages.

    Science.gov (United States)

    1991-01-01

    The Philippine Food and Nutrition Program deliver priority short, simple, clear, and action filled nutrition messages in different languages and dialects to different audiences. Its 1st priority task is to promote breast feeding. It informs mothers that breast milk is the most nutritious food for infants and that it protects them from infectious diseases. The program also encourages breast feeding as long as possible. If mothers cannot breast feed, they should talk to an infant nutrition expert to help them choose the best formula and learn about proper preparation. A 4-6 month infant needs to begin eating small amounts of semisolid nutritious foods. Moreover these foods must include body building foods, such as meat and eggs, and energy providing foods, such as corn and rice. Mothers must 1st attend to food needs of infants and preschoolers since they are more likely to suffer malnutrition than older children and adults. This is especially important when they suffer from an infection. Specifically, the very young need a variety of foods each day including the vitamin and mineral rich vegetables and fruits. In fact, families should grow their own fruits and vegetables to ensure an adequate supply. Hands must be cleaned with soap and water after defecation and before preparing foods. Mothers should add fats and oils when preparing foods because they provide concentrated energy, fatty acids, and fat soluble vitamins. Pregnant mothers must consume increased amounts of fish, beans, and other body building foods as well as regulating foods (vegetables and fruits). Mothers must also space births. They should weigh children each month to monitor nutritional levels. Moreover they must pay attention to signs indicating inadequate and insufficient food intake e.g., underweight and night blindness.

  15. Oracle Service Bus 11g Development Cookbook

    CERN Document Server

    Schmutz, Guido; van Zoggel, Jan

    2012-01-01

    This cookbook is full of immediately useable recipes showing you how to develop service and message-oriented (integration) applications on the Oracle Service Bus. In addition to its cookbook style, which ensures the solutions are presented in a clear step-by-step manner, the explanations go into great detail, which makes it good learning material for everyone who has experience in OSB and wants to improve. Most of the recipes are designed in such a way that each recipe is presented as a separate, standalone entity and reading of prior recipes is not required. The finished solution of each reci

  16. Bus bar joints stability and protection

    CERN Document Server

    Verweij, A

    2009-01-01

    A defective bus connection between two dipole magnets was the primary cause of the incident in sector 34 on September 19th. I will show how this could have happened, i.e. how a highly resistive joint has caused a thermal runaway and burned (or opened) before the QPS threshold was reached. In the second part of the talk I will present the new detection limits for the QPS upgrade of the RB and RQ circuits, required to avoid similar thermal runaways in the future.

  17. Redesign of Transjakarta Bus Driver's Cabin

    Science.gov (United States)

    Mardi Safitri, Dian; Azmi, Nora; Singh, Gurbinder; Astuti, Pudji

    2016-02-01

    Ergonomic risk at work stations with type Seated Work Control was one of the problems faced by Transjakarta bus driver. Currently “Trisakti” type bus, one type of bus that is used by Transjakarta in corridor 9, serving route Pinang Ranti - Pluit, gained many complaints from drivers. From the results of Nordic Body Map questionnaires given to 30 drivers, it was known that drivers feel pain in the neck, arms, hips, and buttocks. Allegedly this was due to the seat position and the button/panel bus has a considerable distance range (1 meter) to be achieved by drivers. In addition, preliminary results of the questionnaire using Workstation Checklist identified their complaints about uncomfortable cushion, driver's seat backrest, and the exact position of the AC is above the driver head. To reduce the risk level of ergonomics, then did research to design the cabin by using a generic approach to designing products. The risk analysis driver posture before the design was done by using Rapid Upper Limb Assessment (RULA), Rapid Entire Body Assessment (REBA), and Quick Exposure Checklist (QEC), while the calculation of the moment the body is done by using software Mannequin Pro V10.2. Furthermore, the design of generic products was done through the stages: need metric-matrix, house of quality, anthropometric data collection, classification tree concept, concept screening, scoring concept, design and manufacture of products in the form of two-dimensional. While the design after design risk analysis driver posture was done by using RULA, REBA, and calculation of moments body as well as the design visualized using software 3DMax. From the results of analysis before the draft design improvements cabin RULA obtained scores of 6, REBA 9, and the result amounted to 57.38% QEC and moment forces on the back is 247.3 LbF.inch and on the right hip is 72.9 LbF.in. While the results of the proposed improvements cabin design RULA obtained scores of 3, REBA 4, and the moment of force on

  18. Network Extender for MIL-STD-1553 Bus

    Science.gov (United States)

    Marcus, Julius; Hanson, T. David

    2003-01-01

    An extender system for MIL-STD-1553 buses transparently couples bus components at multiple developer sites. The bus network extender is a relatively inexpensive system that minimizes the time and cost of integration of avionic systems by providing a convenient mechanism for early testing without the need to transport the usual test equipment and personnel to an integration facility. This bus network extender can thus alleviate overloading of the test facility while enabling the detection of interface problems that can occur during the integration of avionic systems. With this bus extender in place, developers can correct and adjust their own hardware and software before products leave a development site. Currently resident at Johnson Space Center, the bus network extender is used to test the functionality of equipment that, although remotely located, is connected through a MILSTD- 1553 bus. Inasmuch as the standard bus protocol for avionic equipment is that of MIL-STD-1553, companies that supply MIL-STD-1553-compliant equipment to government or industry and that need long-distance communication support might benefit from this network bus extender

  19. A High Efficiency DC Bus Regulator / RPC for Spacecraft Applications

    Science.gov (United States)

    Birchenough, Arthur G.

    2004-02-01

    DC bus voltage regulation may be required in future high powered spacecraft due to the length of the busses or because they are not generated at precise voltage levels. In these cases the regulation range is often only a few percent increase or decrease, but conventional DC voltage regulators switch all the power passing through them, and this level of power switched determines the size and losses in the regulator. A recently developed concept uses a low power DC-DC converter in series with the bus to raise or lower the bus voltage over a small range. This partial power processing technique combines the small size and power losses of the low power converter with the ability to regulate, (over a small range) a high power bus. The Series Connected Buck Boost Regulator (SCBBR) described herein provides bus regulation with an efficiency of 98%. The circuit also provides bus switching and overcurrent limiting functions of a Remote Power Controller (RPC). This paper describes the circuit design and performance of a breadboard SCBBR configured as a bus voltage regulator providing +/- 40% voltage regulation range, bus switching, and overload limiting.

  20. Connecticut Transit (CTTRANSIT) Fuel Cell Transit Bus: Preliminary Evaluation Results

    Energy Technology Data Exchange (ETDEWEB)

    Chandler, K.; Eudy, L.

    2008-10-01

    This report provides preliminary results from a National Renewable Energy Laboratory evaluation of a protoptye fuel cell transit bus operating at Connecticut Transit in Hartford. Included are descriptions of the planned fuel cell bus demonstration and equipment; early results and agency experience are also provided.

  1. Network Analysis of Urban Traffic with Big Bus Data

    CERN Document Server

    Zhao, Kai

    2016-01-01

    Urban traffic analysis is crucial for traffic forecasting systems, urban planning and, more recently, various mobile and network applications. In this paper, we analyse urban traffic with network and statistical methods. Our analysis is based on one big bus dataset containing 45 million bus arrival samples in Helsinki. We mainly address following questions: 1. How can we identify the areas that cause most of the traffic in the city? 2. Why there is a urban traffic? Is bus traffic a key cause of the urban traffic? 3. How can we improve the urban traffic systems? To answer these questions, first, the betweenness is used to identify the most import areas that cause most traffics. Second, we find that bus traffic is not an important cause of urban traffic using statistical methods. We differentiate the urban traffic and the bus traffic in a city. We use bus delay as an identification of the urban traffic, and the number of bus as an identification of the bus traffic. Third, we give our solutions on how to improve...

  2. Review of bus drivers' occupational stress and stress prevention

    NARCIS (Netherlands)

    Kompier, M.A.J.; Di Martino, V.

    1995-01-01

    Although heterogeneous in methodology and content, 32 studies from 13 countries on bus drivers' work and health are similar in their conclusions. Bus-driving–characterized by high demands, low control and low support – can be regarded as a classic example of high-strain occupation, with high risks o

  3. Management Priorities of College Presidents.

    Science.gov (United States)

    Patrick, Cathleen; Caruthers, J. Kent

    1980-01-01

    Based on 900 returns from a survey of all U.S. college and university presidents, priorities were found to reflect needs to deal with retrenchment. Priorities included: communicating institutional strengths to students, parents, public, and state legislatures; integrating program review results; resource allocation; faculty vitality and renewal;…

  4. Our top priority

    CERN Multimedia

    2012-01-01

    After three years of LHC running, we are still at the beginning of a long research programme with our flagship facility, and hopefully 4 July 2012 will go down in history as the date of one of many landmark discoveries spanning several years. CERN’s top priority for the next decade and more is the full exploitation of the LHC. With speculation about potential future facilities mounting in the light of the discovery of a new Higgs-like particle, it’s important to state that most clearly. Of course, this will rely on continued global collaboration, and it’s important that CERN engage constructively with other regions.   It is important to plan ahead, particularly since the lead times for new projects in particle physics are long, and our field is increasingly global in nature. That’s why the European particle physics community is currently engaged in updating its long-term strategy. Planning ahead allowed us to be ready technologically to build the LHC whe...

  5. Djungle power. A more remote AC bus

    Energy Technology Data Exchange (ETDEWEB)

    Boehnke, Heinz W. [Technosol, Jork (Germany)

    2010-07-01

    The Dzanga-Sangha Reserve in the Central African Republic is probably one of the world's most remote protected rainforest areas, much to the benefit of the rare species of lowland gorilla, forest elephant and local pygmy population Ba'Aka. The park is co-managed by the ''WWF-World Wide Fund for Nature'' with sponsoring from the German Regenwald-Stiftung. In 2008 wwf decided to switch from the old, failing generator supply to a solar hybrid mini-grid, along with stringent measures of energy conservation and management. After a careful energy audit Technosol designed an AC-bus system with a 22 kWp PV generator which should overcome the dependency on the old generators and their fuel demands. For 15 buildings, an entirely new distribution network was installed, state of the art energy saving devices introduced and an energy metering system deviced. The installation is operating since August 2009. In such remote locations, the reliability of the AC-bus over other generator-based solutions will be demonstrated and with the support of international organisations like the wwf the practical application of solar hybrid supply becomes a landmark of sustainable energy concepts. (orig.)

  6. An Overview of Staged-bus Operation in Cities

    Directory of Open Access Journals (Sweden)

    Mohammad Hesam Hafezi

    2014-02-01

    Full Text Available In developing countries, demand for passenger travel is higher, due to economic growth. Government policy encourages people to use public transportation instead of their private carsto reduce of traffic congestion and air pollution. In the city areas, bus networks are the major part of the public transportation system because they are easily accessible and cheaper compared to other types of public transportation. In this study revelation of details of bus operation included different agents is studied. Bus operations, during provision of their service, have interaction with three main agents: bus agent, passenger agent and traffic agent. Study of the influence of each agent in bus operation is presented in this study, using the macroscopic way.

  7. Research on the Coordinated Design of Bus and Taxi Station

    Directory of Open Access Journals (Sweden)

    Jiangfeng Xi

    2015-01-01

    Full Text Available Rises in the number of transit buses, bus routes, and overall traffic volume in China’s cities, coupled with interference from other transport modes, such as taxis loading and unloading passengers nearby, have led to increasing traffic delays at bus stops, which is considered one of the factors degrading service levels and traffic operations on urban roadways. This paper studies traffic characteristics at bus stops, investigates variations in delay from different types or designs of bus stops, and analyzes the impact of it on traffic capacity, the purpose of which is to propose a solution to predicting the feasibility of an integrated design of bus stops and taxi stands with the help of mathematical models and based on the objectives of optimal traffic operations and passenger transfer.

  8. Improved design of HIRFL-CSR EVME bus controller

    International Nuclear Information System (INIS)

    The EVME bus controller which is a key component of the HIRFL-CSR control system was improved. Besides reconfiguring the embedded Linux, a utility program was developed for data exchange between the controller and the database. The bus controller is based on ARM920T(ARM9) micro processor which is BGA packaged. The bus controller has the universal interface of VGA display, keyboard, and mouse. The backboard interface logic is programmed in an in-system configurable FPGA device. The bus can drive high current up to 64 mA, with the flexibility of the programmable signal definitions. All the improved performance helped the EVME bus controller play a crucial role in HIRFL-CSR control system. (authors)

  9. Low back trouble among urban bus drivers in Denmark

    DEFF Research Database (Denmark)

    Netterstrøm, Bo; Juel, K

    1989-01-01

    The occurrence of low back trouble and possible connection with psychosocial conditions among urban bus drivers were studied using a questionnaire and subsequent registration of hospital discharges. 2,045 (83%) full-time male bus drivers in the three largest cities in Denmark answered a questionn......The occurrence of low back trouble and possible connection with psychosocial conditions among urban bus drivers were studied using a questionnaire and subsequent registration of hospital discharges. 2,045 (83%) full-time male bus drivers in the three largest cities in Denmark answered...... a questionnaire in 1978 regarding psychosocial factors and health. The prevalence of frequent low back pain was 57%. In a control group of 195 motormen the prevalence was 40%. Standardized Morbidity Ratio for bus drivers discharged from hospital during the period 1978-1984 with the diagnosis lumbar disc...

  10. The wheels on the bus go "buy buy buy": school bus advertising laws.

    Science.gov (United States)

    Pomeranz, Jennifer L

    2012-09-01

    School buses, a practical necessity for millions of children, are at the center of new efforts to raise revenue. School bus advertising laws bring public health and commercialization concerns to the school setting. In doing so, they potentially expose school districts to First Amendment lawsuits. I examined various school bus advertising bills and laws. I reviewed First Amendment "forum analysis" as applied in the transit and school settings to clarify how this legal test may affect school districts subject to such laws. I have made recommendations for school districts to enact appropriate policies to ensure that such advertising does not undermine public health and to enable the districts to maintain control over their property.

  11. Exclusion in a priority queue

    International Nuclear Information System (INIS)

    We introduce the prioritising exclusion process, a stochastic scheduling mechanism for a priority queueing system in which high priority customers gain advantage by overtaking low priority customers. The model is analogous to a totally asymmetric exclusion process with a dynamically varying lattice length. We calculate exact local density profiles for an unbounded queue by deriving domain wall dynamics from the microscopic transition rules. The structure of the unbounded queue carries over to bounded queues where, although no longer exact, we find the domain wall theory is in very good agreement with simulation results. Within this approximation we calculate average waiting times for queueing customers. (paper)

  12. Bus bar electrical feedthrough for electrorefiner system

    Science.gov (United States)

    Williamson, Mark; Wiedmeyer, Stanley G; Willit, James L; Barnes, Laurel A; Blaskovitz, Robert J

    2013-12-03

    A bus bar electrical feedthrough for an electrorefiner system may include a retaining plate, electrical isolator, and/or contact block. The retaining plate may include a central opening. The electrical isolator may include a top portion, a base portion, and a slot extending through the top and base portions. The top portion of the electrical isolator may be configured to extend through the central opening of the retaining plate. The contact block may include an upper section, a lower section, and a ridge separating the upper and lower sections. The upper section of the contact block may be configured to extend through the slot of the electrical isolator and the central opening of the retaining plate. Accordingly, relatively high electrical currents may be transferred into a glovebox or hot-cell facility at a relatively low cost and higher amperage capacity without sacrificing atmosphere integrity.

  13. TALENT MANAGEMENT - A STRATEGIC PRIORITY

    OpenAIRE

    Matei Mirabela-Constanta; Abrudan Maria-Madela

    2009-01-01

    Companies facing the new economic world, dominated by demographic, macroeconomic, and technological changes need to see talent management as a business priority in order to survive. At the same time, the world economic crisis ads pressure over managers, f

  14. Healthcare priority setting in Kenya

    DEFF Research Database (Denmark)

    Bukachi, Salome A.; Onyango-Ouma, Washington; Siso, Jared Maaka;

    2014-01-01

    improves the priority setting decisions. This paper describes the healthcare priority setting processes in Malindi district, Kenya, prior to the implementation of A4R in 2008 and evaluates the process for its conformance with the conditions for A4R. In-depth interviews and focus group discussions with key...... players in the Malindi district health system and a review of key policy documents and national guidelines show that the priority setting process in the district relies heavily on guidelines from the national level, making it more of a vertical, top-down orientation. Multilateral and donor agencies......, national government, budgetary requirements, traditions and local culture influence the process. The four conditions of A4R are present within the priority setting process, albeit to varying degrees and referred to by different terms. There exists an opportunity for A4R to provide a guiding approach within...

  15. Research priorities for Indian psychiatry.

    OpenAIRE

    Patel, Vikram

    2010-01-01

    This article summarises the findings of recent priority setting exercises for psychiatric research and of a mapping of research capacity and resources in south Asia. The priorities for research in the region, as in other developing countries, are related to ‘implementation’ science, i.e. the field of inquiry investigating acceptable and affordable methods of delivering effective treatments for mental disorders, which aims to help close the large treatment gap. “Discovery” research which aims ...

  16. Swisstrolley 3 - An articulated trolley bus; SWISSTROLLEY 3. Gelenktrolleybus

    Energy Technology Data Exchange (ETDEWEB)

    Gisler, H.-J.

    2006-07-01

    This illustrated final report for the Swiss Federal Office of Energy (SFOE) takes a look at the Swisstrolley 3 low-floor, articulated trolley bus developed in Switzerland by the Hess AG company. Various features of the variants of the trolley bus, including single vehicle, single and double-articulated buses and bus trailers, are discussed. The reductions achieved in energy consumption, weight and noise are discussed. Typical values for power consumption are presented in graphical form. Economic viability and passenger-friendliness are examined, as are possibilities for further improvement.

  17. Statistical Analysis for the Driving Cycle of Beijing's Bus

    Institute of Scientific and Technical Information of China (English)

    王震坡; 孙逢春; 王军; 孙立清

    2004-01-01

    According to the test data of the driving model for Beijing's bus routes, 9 parameters and the actual values of Beijing bus are confirmed to evaluate the driving cycle, 2 ways of establishing driving cycle model are analyzed, the formula of calculating driving cycle is acquired, and the calculating driving cycle model and the statistical driving cycle model for the buses in Beijing urban areas are set up. This study provides scientific basis for selecting the bus type and confirming the design parameters and the running method in Beijing.

  18. A new MV bus transfer scheme for nuclear power plants

    Directory of Open Access Journals (Sweden)

    Chang Choong-Koo

    2015-01-01

    Full Text Available Fast bus transfer method is the most popular and residual voltage transfer method that is used as a backup in medium voltage buses in general. The use of the advanced technology like open circuit voltage prediction and digital signal processing algorithms can improve the reliability of fast transfer scheme. However, according to the survey results of the recent operation records in nuclear power plants, there were many instances where the fast transfer scheme has failed. To assure bus transfer in any conditions and circumstances, uninterruptible bus transfer scheme utilizing the state of the art medium voltage UPS is discussed and elaborated.

  19. Common Traffic Violations of Bus Drivers in Urban China: An Observational Study

    OpenAIRE

    Qiqi Wang; , Wei Zhang; Rendong Yang; Yuanxiu Huang; Lin Zhang; Peishan Ning; Xunjie Cheng; Schwebel, David C; Guoqing Hu; Hongyan Yao

    2015-01-01

    Objective To report common traffic violations in bus drivers and the factors that influence those violations in urban China. Methods We conducted an observational study to record three types of traffic violations among bus drivers in Changsha City, China: illegal stopping at bus stations, violating traffic light signals, and distracted driving. The behaviors of bus drivers on 32 routes (20% of bus routes in the city) were observed. A two-level Poisson regression examined factors that predicte...

  20. Rfid-Based Automatic Bus Ticketing: Features and Trends

    Science.gov (United States)

    Oudah, A.

    2016-02-01

    Recent advancements in various technologies have made remarkable developments in various fields for public welfare and public transport is one such area. In the near future public bus transport system with advanced technologies like Radio Frequency Identification Device (RFID), GSM, GPS, ZigBee and RF modules will gain spotlight due to their advantage of higher convenience and greater life standards as compared to the conventional bus systems. In this paper, a comprehensive review of all several proposed bus ticketing and bus information methods has been presented in detail. The study brings out improved solution in terms of cost, convenience, user satisfaction and future implementation. The choice of working modules and their efficient performance has been discussed along with the highlighted importance of the need of technology for welfare of common public and visually impaired.

  1. Constant of heat conduction and stabilization of bus bar conductor

    Science.gov (United States)

    López, G.

    Using the one-dimensional, time-independent conduction state, a constant of heat conduction is given bringing about the known stabilization theorem and a closed expression for the bus bar to be cryogenically stable in superconducting accelerators.

  2. Black silicon solar cells with black bus-bar strings

    DEFF Research Database (Denmark)

    Davidsen, Rasmus Schmidt; Tang, Peter Torben; Mizushima, Io;

    2016-01-01

    We present the combination of black silicon texturing and blackened bus-bar strings as a potential method for obtaining all-black solar panels, while using conventional, front-contacted solar cells. Black silicon was realized by maskless reactive ion etching resulting in total, average reflectance...... below 0.5% across a 156x156 mm2 silicon wafer. Four different methods to obtain blackened bus-bar strings were compared with respect to reflectance, and two of these methods (i.e., oxidized copper and etched solder) were used to fabricate functional allblack solar 9-cell panels. The black bus-bars (e.......g., by oxidized copper) have a reflectance below 3% in the entire visible wavelength range. The combination of black silicon cells and blackened bus-bars results in aesthetic, all-black panels based on conventional, front-contacted solar cells without compromising efficiency....

  3. Optimization Model for Headway of a Suburban Bus Route

    Directory of Open Access Journals (Sweden)

    Xiaohong Jiang

    2014-01-01

    Full Text Available Due to relatively low passenger demand, headways of suburban bus route are usually longer than those of urban bus route. Actually it is also difficult to balance the benefits between passengers and operators, subject to the service standards from the government. Hence the headway of a suburban bus route is usually determined on the empirical experience of transport planners. To cope with this problem, this paper proposes an optimization model for designing the headways of suburban bus routes by minimizing the operating and user costs. The user costs take into account both the waiting time cost and the crowding cost. The feasibility and validity of the proposed model are shown by applying it to the Route 206 in Jiangning district, Nanjing city of China. Weightages of passengers’ cost and operating cost are further discussed, considering different passenger flows. It is found that the headway and objective function are affected by the weightages largely.

  4. Study on the Bus Real-time Dispatching Model

    Institute of Scientific and Technical Information of China (English)

    YingZou; JianguoLi; JianhuaHuang; ZhenminTang

    2004-01-01

    The real-time dispatching model on bus system is studied in this article. Realtime dispatching can resume the planned schedule quickly, and then to ensure the reliability of the public transport service and to well raise the service quality.

  5. Global Optimization for Bus Line Timetable Setting Problem

    Directory of Open Access Journals (Sweden)

    Qun Chen

    2014-01-01

    Full Text Available This paper defines bus timetables setting problem during each time period divided in terms of passenger flow intensity; it is supposed that passengers evenly arrive and bus runs are set evenly; the problem is to determine bus runs assignment in each time period to minimize the total waiting time of passengers on platforms if the number of the total runs is known. For such a multistage decision problem, this paper designed a dynamic programming algorithm to solve it. Global optimization procedures using dynamic programming are developed. A numerical example about bus runs assignment optimization of a single line is given to demonstrate the efficiency of the proposed methodology, showing that optimizing buses’ departure time using dynamic programming can save computational time and find the global optimal solution.

  6. Bus Passenger Recognition and Track of Video Sequence

    Directory of Open Access Journals (Sweden)

    Donghua Zhou

    2013-06-01

    Full Text Available Study on bus passenger recognition and track of video sequence is a research aiming at realizing making a statistics on passenger flow volume of bus, which not only helps traffic services center rationally schedule vehicles, but also can avoid overload. The system makes machine vision technology and digital image processing technique applied in customer counting of bus. The key questions in the study include effective collection of video image, effective extraction of moving object in sequence images, recognition of moving targets, trace and count of moving objects. The paper makes deep analysis on relevant technology from the perspective of the theory and practical application of the algorithm, and the study makes achievements. The theoretical algorithm for the study on bus passenger recognition and track of video sequence is distinctive. The practical experiments indicate that the system can satisfy the real-time requirements, and can accurately make statistics on the number of passengers, which has great application value.

  7. Examining the Optimal Fuel Type for Urban Bus Operations

    OpenAIRE

    CAULFIELD, BRIAN

    2010-01-01

    PUBLISHED Washington D.C. Public service fleets offer an attractive option for introducing renewable fuels and alternative technologies on a large scale, which allow for the reduction of both greenhouse gas emissions and exhaust air pollutants. This paper ex amines the use of biomethane (bio-CNG) and compressed natural gas (CNG) for part of the bus fleet in Dublin. Dublin is typical of many international urban centres with a large bus fleet; therefore the results...

  8. Compressed natural gas bus safety: a quantitative risk assessment.

    Science.gov (United States)

    Chamberlain, Samuel; Modarres, Mohammad

    2005-04-01

    This study assesses the fire safety risks associated with compressed natural gas (CNG) vehicle systems, comprising primarily a typical school bus and supporting fuel infrastructure. The study determines the sensitivity of the results to variations in component failure rates and consequences of fire events. The components and subsystems that contribute most to fire safety risk are determined. Finally, the results are compared to fire risks of the present generation of diesel-fueled school buses. Direct computation of the safety risks associated with diesel-powered vehicles is possible because these are mature technologies for which historical performance data are available. Because of limited experience, fatal accident data for CNG bus fleets are minimal. Therefore, this study uses the probabilistic risk assessment (PRA) approach to model and predict fire safety risk of CNG buses. Generic failure data, engineering judgments, and assumptions are used in this study. This study predicts the mean fire fatality risk for typical CNG buses as approximately 0.23 fatalities per 100-million miles for all people involved, including bus passengers. The study estimates mean values of 0.16 fatalities per 100-million miles for bus passengers only. Based on historical data, diesel school bus mean fire fatality risk is 0.091 and 0.0007 per 100-million miles for all people and bus passengers, respectively. One can therefore conclude that CNG buses are more prone to fire fatality risk by 2.5 times that of diesel buses, with the bus passengers being more at risk by over two orders of magnitude. The study estimates a mean fire risk frequency of 2.2 x 10(-5) fatalities/bus per year. The 5% and 95% uncertainty bounds are 9.1 x 10(-6) and 4.0 x 10(-5), respectively. The risk result was found to be affected most by failure rates of pressure relief valves, CNG cylinders, and fuel piping.

  9. Bus Implementation Using New Low Power PFSCL Tristate Buffers

    OpenAIRE

    Neeta Pandey; Bharat Choudhary; Kirti Gupta; Ankit Mittal

    2016-01-01

    This paper proposes new positive feedback source coupled logic (PFSCL) tristate buffers suited to bus applications. The proposed buffers use switch to attain high impedance state and modify the load or the current source section. An interesting consequence of this is overall reduction in the power consumption. The proposed tristate buffers consume half the power compared to the available switch based counterpart. The issues with available PFSCL tristate buffers based bus implementation are id...

  10. DIMETHYL ETHER (DME)-FUELED SHUTTLE BUS DEMONSTRATION PROJECT

    Energy Technology Data Exchange (ETDEWEB)

    Elana M. Chapman; Shirish Bhide; Jennifer Stefanik; Howard Glunt; Andre L. Boehman; Allen Homan; David Klinikowski

    2003-04-01

    The objectives of this research and demonstration program are to convert a campus shuttle bus to operation on dimethyl ether, a potential ultra-clean alternative diesel fuel. To accomplish this objective, this project includes laboratory evaluation of a fuel conversion strategy, as well as, field demonstration of the DME-fueled shuttle bus. Since DME is a fuel with no lubricity (i.e., it does not possess the lubricating quality of diesel fuel), conventional fuel delivery and fuel injection systems are not compatible with dimethyl ether. Therefore, to operate a diesel engine on DME one must develop a fuel-tolerant injection system, or find a way to provide the necessary lubricity to the DME. In this project, they have chosen the latter strategy in order to achieve the objective with minimal need to modify the engine. Their strategy is to blend DME with diesel fuel, to obtain the necessary lubricity to protect the fuel injection system and to achieve low emissions. The bulk of the efforts over the past year were focused on the conversion of the campus shuttle bus. This process, started in August 2001, took until April 2002 to complete. The process culminated in an event to celebrate the launching of the shuttle bus on DME-diesel operation on April 19, 2002. The design of the system on the shuttle bus was patterned after the system developed in the engine laboratory, but also was subjected to a rigorous failure modes effects analysis (FMEA, referred to by Air Products as a ''HAZOP'' analysis) with help from Dr. James Hansel of Air Products. The result of this FMEA was the addition of layers of redundancy and over-pressure protection to the system on the shuttle bus. The system became operational in February 2002. Preliminary emissions tests and basic operation of the shuttle bus took place at the Pennsylvania Transportation Institute's test track facility near the University Park airport. After modification and optimization of the system on

  11. CROSS-FRONTIER PUBLIC TRANSPORT: Y BUS

    CERN Document Server

    CERN Housing Service

    2002-01-01

    'Y' buses cover the journey between Val Thoiry in France (shopping centre including'Migros' and other stores) and Blandonnet in Switzerland, where they stop outside the 'Jumbo' shop, now renamed 'Carrefour'. In France, the buses connect up Thoiry, Sergy and St. Genis, then cross the border to stop outside CERN, Meyrin, before continuing towards Geneva along the 'Route de Meyrin', stopping outside the 'La Tour' hospital, then at the terminus Blandonnet. The normal fare on French territory with a slight incursion into Switzerland for this purpose as far as CERN, Meyrin, is 1.20 Euros per single journey (ticket valid for one hour). The same amount is charged for any single journey in Switzerland. For example, the cost of a single journey between St. Genis and the 'La Tour' hospital would be 2.40 Euros. The season ticket ('Abonnement de Travail') opens the right to purchase a ticket valid over any period of seven days which entitles the holder to as many journeys as required between the bus stop nearest to the pl...

  12. A priority problem in queuing theory

    Directory of Open Access Journals (Sweden)

    N. K. Jaiwal

    1959-04-01

    Full Text Available A new type of priority is defined in which the priority unit has a right of interrupting the service of a nonpriority unit but only after the completion of the particular phase in progress, it being assumed that a unit demands a particular number of phases according to some probability distribution. The effect of such priority has been investigated. A particular case of this sort of priority corresponds to the head-of-line priority assignment discussed by Cobham.

  13. TALENT MANAGEMENT - A STRATEGIC PRIORITY

    Directory of Open Access Journals (Sweden)

    Matei Mirabela-Constanta

    2009-05-01

    Full Text Available Companies facing the new economic world, dominated by demographic, macroeconomic, and technological changes need to see talent management as a business priority in order to survive. At the same time, the world economic crisis ads pressure over managers, f

  14. Application of CAN Bus Technology on Zhongtong Bus%CAN总线技术在中通客车上的应用

    Institute of Scientific and Technical Information of China (English)

    赵佳

    2012-01-01

    The application status of CAN bus technology on Zhongtong bus is introduced, the methods of bus data collection and analysis on Zhongtong traditional and new energy bus are discussed and the development direction of CAN bus technology is prospected.%介绍CAN总线技术在中通客车上的应用状况,探讨中通传统客车及新能源客车的总线数据采集和分析方法。

  15. Car Delay Model near Bus Stops with Mixed Traffic Flow

    Directory of Open Access Journals (Sweden)

    Yang Xiaobao

    2013-01-01

    Full Text Available This paper proposes a model for estimating car delays at bus stops under mixed traffic using probability theory and queuing theory. The roadway is divided to serve motorized and nonmotorized traffic streams. Bus stops are located on the nonmotorized lanes. When buses dwell at the stop, they block the bicycles. Thus, two conflict points between car stream and other traffic stream are identified. The first conflict point occurs as bicycles merge to the motorized lane to avoid waiting behind the stopping buses. The second occurs as buses merge back to the motorized lane. The average car delay is estimated as the sum of the average delay at these two conflict points and the delay resulting from following the slower bicycles that merged into the motorized lane. Data are collected to calibrate and validate the developed model from one site in Beijing. The sensitivity of car delay to various operation conditions is examined. The results show that both bus stream and bicycle stream have significant effects on car delay. At bus volumes above 200 vehicles per hour, the curbside stop design is not appropriate because of the long car delays. It can be replaced by the bus bay design.

  16. Capacity Region of a New Bus Communication Model

    Directory of Open Access Journals (Sweden)

    Zhuojun Zhuang

    2013-02-01

    Full Text Available In this paper, we study a new bus communication model, where two transmitters wish to send their corresponding private messages and a common message to a destination, while they also wish to send the common message to another receiver connected to the same wire. From an information-theoretical point of view, we first study a general case of this new model (with discrete memoryless channels. The capacity region composed of all achievable (R0,R1,R2 triples is determined for this general model, where R1 and R2 are the transmission rates of the private messages and R0 is the transmission rate of the common message. Then, the result is further explained via the Gaussian example. Finally, we give the capacity region for the new bus communication model with additive Gaussian noises and attenuation factors. This new bus communication model captures various communication scenarios, such as the bus systems in vehicles, and the bus type of communication channel in power line communication (PLC networks.

  17. Contagion processes on urban bus networks in Indian cities

    CERN Document Server

    Chatterjee, Atanu; Jagannathan, Krishna

    2015-01-01

    Bus transportation is considered as one of the most convenient and cheapest modes of public transportation in Indian cities. Due to their cost-effectiveness and wide reachability, they help a significant portion of the human population in cities to reach their destinations every day. Although from a transportation point of view they have numerous advantages over other modes of public transportation, they also pose a serious threat of contagious diseases spreading throughout the city. The presence of numerous local spatial constraints makes the process and extent of epidemic spreading extremely difficult to predict. Also, majority of the studies have focused on the contagion processes on scale-free network topologies whereas, spatially-constrained real-world networks such as, bus networks exhibit a wide-spectrum of network topology. Therefore, we aim in this study to understand this complex dynamical process of epidemic outbreak and information diffusion on the bus networks for six different Indian cities usin...

  18. Optimal Locations of Bus Stops Connecting Subways near Urban Intersections

    Directory of Open Access Journals (Sweden)

    Yuan Cui

    2015-01-01

    Full Text Available Unsuitable locations of bus stops which provide feeder transportation connecting subways near urban intersections usually lead to the low efficiency of public transport and level of passenger service. A multiobjective optimization model to distribute such stop locations is proposed to attain the shortest total walk distance of passengers and minimum delay time of cars through intersections and travel time of buses. The Pareto frontier and optimal solutions for the proposed model are given by the distance-based and enumerative methods. The Xizhimen bus stop is selected to implement case studies for verifying the validity of the proposed model. The analysis of sensitivity on possible solutions is also carried out in the case studies. The results show that the proposed model is capable of optimizing the locations of bus stops connecting subways near intersections and helpful to improve the level of passengers service and operational efficiency of public transportation.

  19. American Fuel Cell Bus Project Evaluation. Second Report

    Energy Technology Data Exchange (ETDEWEB)

    Eudy, Leslie [National Renewable Energy Lab. (NREL), Golden, CO (United States); Post, Matthew [National Renewable Energy Lab. (NREL), Golden, CO (United States)

    2015-09-01

    This report presents results of the American Fuel Cell Bus (AFCB) Project, a demonstration of fuel cell electric buses operating in the Coachella Valley area of California. The prototype AFCB was developed as part of the Federal Transit Administration's (FTA's) National Fuel Cell Bus Program. Through the non-profit consortia CALSTART, a team led by SunLine Transit Agency and BAE Systems developed a new fuel cell electric bus for demonstration. SunLine added two more AFCBs to its fleet in 2014 and another in 2015. FTA and the AFCB project team are collaborating with the U.S. Department of Energy (DOE) and DOE's National Renewable Energy Laboratory to evaluate the buses in revenue service. This report summarizes the performance results for the buses through June 2015.

  20. High Performance BDR for the PCU of AlphaBus

    Science.gov (United States)

    Subrier, Laurent; Besdel, Patrick; Daubresse, Thierry; Trehet, Eric

    2008-09-01

    Very high-power satellites for Telecom missions require 100V bus. Some Telecom payloads may be used in TDMA mode with a power modulation up to 30% of the Payload power. Full performance of the PCU is required in this case even in eclipse mode. It is clear that this requirement is very demanding especially for the BDR design.100V bus system leads making this requirement more difficult as Bus and Battery short-circuit protections have to operate under a voltage of 100V. This paper describes first the overall BDR design with a special focus on the innovative battery short-circuit protection that is not achieved by a "classical" series SSPC on the battery line.The constraints brought by the TDMA mode are detailed, especially on the input filter of the BDR in presence of large battery inductance. The solution developed to cope with large TDMA current is then presented with the associated TDMA performance.

  1. Distributed cooperative synchronization strategy for multi-bus microgrids

    DEFF Research Database (Denmark)

    Sun, Yao; Zhong, Chaolu; Hou, Xiaochao;

    2017-01-01

    synchronization methods based on centralized communication are very costly and not suitable for multi-bus microgrids that have a large number of distributed generators (DGs). To address this concern, this study presents an active synchronization control strategy based on distributed cooperation technology...... for multi-bus microgrids. The proposed method can reconnect the microgrid in island to UG seamlessly with sparse communication channels. Synchronization correction signals are generated by a voltage controller, which are only transmitted to the leader DGs. Meanwhile, each DG exchanges information with its...

  2. Black silicon with black bus-bar strings

    DEFF Research Database (Denmark)

    Davidsen, Rasmus Schmidt; Tang, Peter Torben; Mizushima, Io;

    2016-01-01

    We present the combination of black silicon texturing and blackened bus-bar strings as a potential method for obtaining all-black solar panels, while using conventional, front-contacted solar cells. Black silicon was realized by mask-less reactive ion etching resulting in total, average reflectance...... below 0.5% across a 156x156 mm2 silicon wafer. Black bus-bars were realized by oxidized copper resulting in reflectance below 3% in the entire visible wavelength range. The combination of these two technologies may result in aesthetic, all-black panels based on conventional, front-contacted solar cells...

  3. Persecution as a Theme in Isaac Bashevis Singer's The Bus

    Institute of Scientific and Technical Information of China (English)

    Wu Minzhi

    2008-01-01

    Isaac Bashevis Singer is very much concerned about the fate of Jewish people,so he often presents Jews'sufferings in his literary works.The Bus,by means of describing the narrator's experiences during a bus tour through Spain,in different dimensions reinforces the destructive impact of persecution that Jews have gone through.Moreover,he implies such persecution is not merely confined between Jews and the Gentile,but also spreads among the whole human beings who hold differet beliefs.

  4. Improving student bus-riding behavior through a whole-school intervention.

    OpenAIRE

    Putnam, Robert F; Handler, Marcie W; Ramirez-Platt, Christina M; Luiselli, James K

    2003-01-01

    We describe a multicomponent intervention to improve bus-riding behavior of students attending an urban public school. The intervention was developed with technical assistance consultation that emphasized collaboration among students, school personnel, and bus drivers. The primary intervention procedures were identifying appropriate behaviors during transportation ("bus rules"), training bus drivers to deliver positive reinforcement, and rewarding student performance through a weekly school-b...

  5. Bus Catcher: A Context Sensitive Prototype System for Public Transportation Users

    OpenAIRE

    Bertolotto, Michela; O'Hare, G.M.P.; Strahan, Robin; Brophy, Ailish; Martin, A.; McLoughlin, Eoin

    2002-01-01

    In this paper we describe the architectural and functional characteristics of Bus Catcher, a context sensitive prototype system for public transportation users. Bus Catcher assists mobile users in planning their bus rides by providing timely and accurate information about current bus locations and estimated arrival times. A complete report on the implementation together with a preliminary evaluation of the system is provided in this paper.

  6. Performance evaluation of UHF RFID technologies for real-time bus recognition in the Taipei Bus Station.

    Science.gov (United States)

    Own, Chung-Ming; Lee, Da-Sheng; Wang, Ti-Ho; Wang, De-Jun; Ting, Yu-Lun

    2013-06-18

    Transport stations such as airports, ports, and railways have adopted blocked-type pathway management to process and control travel systems in a one-directional manner. However, this excludes highway transportation where large buses have great variability and mobility; thus, an instant influx of numerous buses increases risks and complicates station management. Focusing on Taipei Bus Station, this study employed RFID technology to develop a system platform integrated with modern information technology that has numerous characteristics. This modern information technology comprised the following systems: ultra-high frequency (UHF) radio-frequency identification (RFID), ultrasound and license number identification, and backstage graphic controls. In conclusion, the system enabled management, bus companies, and passengers to experience the national bus station's new generation technology, which provides diverse information and synchronization functions. Furthermore, this technology reached a new milestone in the energy-saving and efficiency-increasing performance of Taiwan's buses.

  7. 77 FR 65912 - Priority Mail Contract

    Science.gov (United States)

    2012-10-31

    ... Priority Mail Contract AGENCY: Postal Regulatory Commission. ACTION: Notice. SUMMARY: The Commission is noticing a recent Postal Service filing concerning an amendment to Priority Mail Contract 19. This notice... existing Priority Mail Contract 19 subject to this docket.\\1\\ The Postal Service includes one attachment...

  8. PRIORITY RIGHTS IN THE RUSSIAN CIVIL LAW

    OpenAIRE

    Shaidurov I. V.

    2014-01-01

    In this article we consider the category of priority rights in the Russian civil law. The author gives a brief historical analysis of this important institution of civil law, consistently considering priority rights in different legal situations and formulates the concept of priority rights

  9. MSCT findings in a controlled bus bombing using a pig model

    DEFF Research Database (Denmark)

    Hansen, Nikolaj Friis

    2009-01-01

    pig's position in the bus at the time of detonation. 1 of the pigs was rigged as a suicide bomber while the others were individually placed as passengers and bus driver inside the bus alongside dummies. Measurements of the blast force and fast speed video recordings were made during the detonation...

  10. 49 CFR 571.221 - Standard No. 221; School bus body joint strength.

    Science.gov (United States)

    2010-10-01

    ... means any part of the bus, of either a mechanical or electrical nature, which is explicitly identified... 49 Transportation 6 2010-10-01 2010-10-01 false Standard No. 221; School bus body joint strength... STANDARDS Federal Motor Vehicle Safety Standards § 571.221 Standard No. 221; School bus body joint...

  11. 46 CFR 112.05-3 - Main-emergency bus-tie.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Main-emergency bus-tie. 112.05-3 Section 112.05-3 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) ELECTRICAL ENGINEERING EMERGENCY LIGHTING AND POWER SYSTEMS General § 112.05-3 Main-emergency bus-tie. Each bus-tie between a main...

  12. 40 CFR 35.2015 - State priority system and project priority list.

    Science.gov (United States)

    2010-07-01

    ... contained in the State priority system. (2) The list shall include an estimate of the eligible cost of each... priority list. 35.2015 Section 35.2015 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY GRANTS AND... State priority system and project priority list. (a) General. The Regional Administrator will...

  13. 15 CFR 700.15 - Extension of priority ratings.

    Science.gov (United States)

    2010-01-01

    ...) BUREAU OF INDUSTRY AND SECURITY, DEPARTMENT OF COMMERCE NATIONAL SECURITY INDUSTRIAL BASE REGULATIONS DEFENSE PRIORITIES AND ALLOCATIONS SYSTEM Industrial Priorities § 700.15 Extension of priority ratings....

  14. How to Cut Costs by Saving School Bus Fuel.

    Science.gov (United States)

    Seiff, Hank

    A program started in Washington County, Maryland in 1980 has been successful in saving school bus fuel and bringing down transportation costs incurred by its fleet of 200 buses. Driver training and motivation, as well as a partial transfer to diesel buses, are at the heart of the program. The drivers are taught five fuel saving techniques: cut…

  15. Bullying on the School Bus: A Video Analysis

    Science.gov (United States)

    Raskauskas, Juliana

    2005-01-01

    The purpose of this study was to assess the nature of bullying on the school bus. Videotapes were used to identify occurrences of bullying on buses of elementary school students. Incidents were reviewed for forms of bullying, fullness, presence of friends, and severity of acts. Results indicated that approximately two incidents occurred per bus…

  16. Bussikontsern Go Bus ihaldab Harjumaa turgu / Signe Kalberg

    Index Scriptorium Estoniae

    Kalberg, Signe, 1959-

    2005-01-01

    AS-i Tarbus ja kaheksa bussiettevõtte ühinemisel moodustati AS Go Bus, ettevõte plaanib veel mitme bussifirma liitmist. Atko Grupi juhatuse esimehe Margo Tomingase, AS Sebe nõukogu esimehe Hugo Osula arvamus. Lisa: Konkurentsiamet hoiab silma peal

  17. Overview of Multi-DC-Bus Solutions for DC Microgrids

    DEFF Research Database (Denmark)

    Ricchiuto, D.; Mastromauro, R.A.; Liserre, Marco;

    2013-01-01

    DC Microgrids have recently received a lot of attention in the last years due to high penetration of renewable energy sources as well as distributed energy storage systems. In the future DC microgrids could be preferable respect to AC microgrids in terms of redundancy since multi-DC-Bus solutions...

  18. What's Happening on the School Bus Performance Front?

    Science.gov (United States)

    Combs, Hanford L.

    The most urgent order of business in the national scene is to complete the development of a series of new performance tests for school bus bodies and chassis to establish a benchmark for safe construction that can be verified by independent testing agencies. Such performance tests should incorporate the new Federal Joint Strength Efficiency…

  19. High-Tech School Bus Teaches Students on the Road

    Science.gov (United States)

    Katims, Lauren

    2011-01-01

    Last year, kindergarten through high school students in the rural Hector, Arkansas, School District barely had the technology resources that keep kids interested in math and science. This year, they potentially have the most advanced resources in the country--before they even step into the classroom. One school bus in Arkansas' Pope County has…

  20. A Novel Time Synchronization Method for Dynamic Reconfigurable Bus

    Directory of Open Access Journals (Sweden)

    Zhang Weigong

    2016-01-01

    Full Text Available UM-BUS is a novel dynamically reconfigurable high-speed serial bus for embedded systems. It can achieve fault tolerance by detecting the channel status in real time and reconfigure dynamically at run-time. The bus supports direct interconnections between up to eight master nodes and multiple slave nodes. In order to solve the time synchronization problem among master nodes, this paper proposes a novel time synchronization method, which can meet the requirement of time precision in UM-BUS. In this proposed method, time is firstly broadcasted through time broadcast packets. Then, the transmission delay and time deviations via three handshakes during link self-checking and channel detection can be worked out referring to the IEEE 1588 protocol. Thereby, each node calibrates its own time according to the broadcasted time. The proposed method has been proved to meet the requirement of real-time time synchronization. The experimental results show that the synchronous precision can achieve a bias less than 20 ns.

  1. Measurements on and simulations of a biogas-fuelled bus

    International Nuclear Information System (INIS)

    Mathematical models for torque/fuel consumption and emissions have been studied for a biogas-fuelled bus used in urban traffic in Linkoeping, Sweden. It is noted that the cycle ECE R-49 is not representative for city buses, but that the Braunschweig cycle gives rather good agreement. 2 refs, 37 figs

  2. Measuring Bus Drivers' Occupational Stress Under Changing Working Conditions

    NARCIS (Netherlands)

    Hlotova, Y.; Cats, O.; Meijer, S.A.

    2014-01-01

    Stress is an immense problem in modern society; approximately half of all occupational illnesses are directly or indirectly related to stress. The work of a bus driver is typically associated with high stress levels that negatively influence individual well-being as well as workforce management. The

  3. GeoBus: sharing science research with schools

    Science.gov (United States)

    Roper, Kathryn; Robinson, Ruth; Moorhouse, Ben

    2016-04-01

    GeoBus (www.geobus.org.uk) is an educational outreach project that was developed in 2012 by the Department of Earth and Environmental Sciences at the University of St Andrews, and it is currently sponsored by industry, NERC, The Crown Estate, and the Scottish Government. The aims of GeoBus are to support the teaching of Earth Science in secondary (middle and high) schools by providing teaching support to schools that have little or no experience in teaching this subject. This is, in part, done through the sharing of new science research outcomes and the experiences of young researchers with school pupils to provide a bridge between industry, higher education institutions, research councils and schools. Since its launch, over 40,000 pupils will have been involved in experiential Earth science learning activities in 190 different schools (over 400 separate visits) across the length and breadth of Scotland: many of these schools are in remote and disadvantaged regions. A new GeoBus project is under development within the Department of Earth Sciences at UCL in London. A key aim of GeoBus is to incorporate new research into our workshops with the main challenge being the development of appropriate resources that incorporate the key learning aims and requirements of the science and geography curricula. GeoBus works closely with researchers, teachers and educational practitioners to tailor the research outcomes to the curricula as much as possible. Over the past four years, GeoBus has developed 17 workshops, 5 challenge events and extensive field trips and each of these activities are trialled and evaluated within the university, and adjustments are made before the activities are delivered in schools. Activities are continually reviewed and further developments are made in response to both teacher and pupil feedback. This critical reflection of the project's success and impact is important to insure a positive and significant contribution to the science learning in

  4. Real life testing of a Hybrid PEM Fuel Cell Bus

    Science.gov (United States)

    Folkesson, Anders; Andersson, Christian; Alvfors, Per; Alaküla, Mats; Overgaard, Lars

    Fuel cells produce low quantities of local emissions, if any, and are therefore one of the most promising alternatives to internal combustion engines as the main power source in future vehicles. It is likely that urban buses will be among the first commercial applications for fuel cells in vehicles. This is due to the fact that urban buses are highly visible for the public, they contribute significantly to air pollution in urban areas, they have small limitations in weight and volume and fuelling is handled via a centralised infrastructure. Results and experiences from real life measurements of energy flows in a Scania Hybrid PEM Fuel Cell Concept Bus are presented in this paper. The tests consist of measurements during several standard duty cycles. The efficiency of the fuel cell system and of the complete vehicle are presented and discussed. The net efficiency of the fuel cell system was approximately 40% and the fuel consumption of the concept bus is between 42 and 48% lower compared to a standard Scania bus. Energy recovery by regenerative braking saves up 28% energy. Bus subsystems such as the pneumatic system for door opening, suspension and brakes, the hydraulic power steering, the 24 V grid, the water pump and the cooling fans consume approximately 7% of the energy in the fuel input or 17% of the net power output from the fuel cell system. The bus was built by a number of companies in a project partly financed by the European Commission's Joule programme. The comprehensive testing is partly financed by the Swedish programme "Den Gröna Bilen" (The Green Car). A 50 kW el fuel cell system is the power source and a high voltage battery pack works as an energy buffer and power booster. The fuel, compressed hydrogen, is stored in two high-pressure stainless steel vessels mounted on the roof of the bus. The bus has a series hybrid electric driveline with wheel hub motors with a maximum power of 100 kW. Hybrid Fuel Cell Buses have a big potential, but there are

  5. Energy Performance Optimization of a Bus for Urban Public Transport

    Directory of Open Access Journals (Sweden)

    Paola Gori

    2013-08-01

    Full Text Available Nowadays many people use public transports in urban centres. Consequently, every day a lot of buses move within cities, trying to ensure the best service to citizens. During the year buses becomecrowded places and using an air conditioning system in constant operation, it tries to ensure a certain condition of comfort for the passengers on board. The aim of this study is to analyse and optimize the energy performance of a bus shell, identifying practical solutions that have not yet been adopted in order to reduce the impact of air conditioning on bus consumption and, therefore, on air pollution. For this reason it was decided to conduct a thermal analysis of a bus for public transport, in order to understandthe behaviour of the bus shell and to deduce possible optimization measures that have not yet been made until now. The analysis was carried out considering the hottest day of July and the coldest day ofJanuary, considering the conditions of operation based on the most common graphics TGM able to define the concentration of traffic city during the 24 hours per day. The study was done using the dynamicsimulation software TRNSYS. With this software it was possible to recreate faithfully the structure of the bus and the external environmental conditions, assessing the impact of different technical solutions for an improvement of internal conditions and a reduction of the cooling capacity required. Because the presence of passengers in public transport is considered like a “benefit” during the winter, the analysis started with the identification of a summer solution and the subsequent evaluation of this solution for the wintertime. The aim of this study was to optimize the bus shell and select the most appropriate solutions. Regarding the transparent surfaces it has been given importance to factors such as the thermal transmittance and the solar gain factor (g-value. Aware of the influence given by the solar radiation on the energy loads, we

  6. SunLine Transit Agency Advanced Technology Fuel Cell Bus Evaluation: First Results Report

    Energy Technology Data Exchange (ETDEWEB)

    Eudy, L.; Chandler, K.

    2011-03-01

    This report describes operations at SunLine Transit Agency for their newest prototype fuel cell bus and five compressed natural gas (CNG) buses. In May 2010, SunLine began operating its sixth-generation hydrogen fueled bus, an Advanced Technology (AT) fuel cell bus that incorporates the latest design improvements to reduce weight and increase reliability and performance. The agency is collaborating with the U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL) to evaluate the bus in revenue service. This report provides the early data results and implementation experience of the AT fuel cell bus since it was placed in service.

  7. Implementation of an AMBA Advanced High Performance Bus protocol IP block

    OpenAIRE

    Mahendra Vucha Sandeep Magarde; Miss. Shruti Bhargava; Rishabh Singh Kurmi

    2011-01-01

    The design of an AMBA advanced high performance bus (AHB) protocol IP block is presented in this paper. The AHB (Advanced High-performance Bus) is a high-performance bus in AMBA (Advanced Microcontroller Bus Architecture) family. This AHB can be used in high clock frequency system modules. The AHB acts as the high-performance system backbone bus. AHB supports the efficient connection of processors, on-chip memories and off-chip external memory interfaces with low-power peripheral macro cell f...

  8. Two hot spots in China's bus market%中国客车市场呈现两大热点

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    @@ According to an analysis on statistics of production and sales of China's 70 bus enterprises in 2005, bus sales are expected to continue to grow this year, posing a better performance than that in the previous year, and the urban public bus transport, rural bus transport and export together will be a major motive power for pulling up growth of the industry.

  9. Setting Priorities Personal Values, Organizational Results

    CERN Document Server

    (CCL), Center for Creative Leadership

    2011-01-01

    To be a successful leader, you need to get results. To get results, you need to set priorities. This book can help you do a better job of setting priorities, recognizing the personal values that motivate your decision making, the probable trade-offs and consequences of your decisions, and the importance of aligning your priorities with your organization's expectations. In this way you can successfully meet organizational objectives and consistently produce results.

  10. StarBus+: Distributed Object Middleware Practice for Internet Computing

    Institute of Scientific and Technical Information of China (English)

    Huai-Min Wang; Yu-Feng Wang; Yang-Bin Tang

    2005-01-01

    In the past decade, the booming of Internet challenges the middleware in three aspects: quality of service,balance of changes and stabilization, and across-Internet integration. This paper presents our work on distributed object computing middleware technology for these challenges, as well as the research and development on StarBus+, which is a CORBA standard-compliant middleware suite with the features such as object request broker supporting multi-* quality of service, component model, and integration with Web Service. This paper comprehensively presents the design and characteristics of StarBns+, and demonstrates how StarBus+ is enhanced to address the challenges of Internet computing through three case studies: inter-enterprise integration over Internet, application evolution through dynamic reconfiguration,and great massive information system building. The paper also suggests some research directions which are important for Internet computing.

  11. Bus Encoder for Crosstalk Avoidance in RLC Modeled Interconnects

    Directory of Open Access Journals (Sweden)

    G. Nagendra Babu

    2012-02-01

    Full Text Available Most of the encoding methods proposed in recent years have dealt with only RC modeled VLSI interconnects. For deep sub micron technologies (DSM, on-chip inductive effects have increased due to faster clock speeds, smaller signal rise times and longer length of on-chip interconnects. All these issues raise the concern for cross talk, propagation delay and power dissipation of overall. Therefore, this research work introduces an efficient Bus Encoder using Bus Inverting (BI method. The proposed design dramatically reduces both cross talk and power dissipation in RLC modeled interconnects which makes it suitable for current high-speed low-power VLSI interconnects. The proposed model demonstrates an overall reduction of power dissipation and cross talk induced delay by 55.43% and 45.87%, respectively.

  12. Bus Vent Design Evolution for the Solar Dynamics Observatory

    Science.gov (United States)

    Woronowicz, Michael

    2010-01-01

    As a spacecraft undergoes ascent in a launch vehicle, its pressure environment transitions from one atmosphere to high vacuum in a matter of minutes. Venting of internal cavities is necessary to prevent the buildup of pressure differentials across cavity walls. Opposing the need to vent these volumes freely into space are thermal, optical, and electrostatic requirements for limiting or prohibiting the intrusion of unwanted energy into the same cavities. Bus vent design evolution is discussed for the Solar Dynamics Observatory. Design changes were influenced by a number of factors and concerns, such as contamination control, electrostatic discharge, changes in bus material, and driving fairing ascent pressure for a launch vehicle that was just entering service as this satellite project had gotten underway.

  13. Implementation of I 2C Master Bus Protocol on FPGA

    Directory of Open Access Journals (Sweden)

    Regu Archana

    2014-10-01

    Full Text Available The focus of this paper is on I 2C (Inter-Integrated Circuit protocol interface between Master Bus protocol and slave. Here we are interfacing between micro-controller and DS1307. I 2C bus protocol sends 8 bit data from micro-controller to DS1307. This module was designed in VHDL and simulated and synthesized using Xilinx ISE Design Suite 14.2. I 2C and optimized for area and power. This concept is widely applicable from any high speed device or low speed device to any low speed device or high speed device. This module acts as a slave for the DS1307 at the same time acts like a master for the micro-controller device which can be considered as a slave. . It can be used to interface low speed peripherals like motherboard, embedded system, mobile phones, set top boxes, DVD, PDA’s or other electronic devices.

  14. Hardware Engines for Bus Encryption: A Survey of Existing Techniques

    CERN Document Server

    Elbaz, R; Sassatelli, G; Guillemin, P; Anguille, C; Bardouillet, M; Buatois, C; Rigaud, J B

    2011-01-01

    The widening spectrum of applications and services provided by portable and embedded devices bring a new dimension of concerns in security. Most of those embedded systems (pay-TV, PDAs, mobile phones, etc...) make use of external memory. As a result, the main problem is that data and instructions are constantly exchanged between memory (RAM) and CPU in clear form on the bus. This memory may contain confidential data like commercial software or private contents, which either the end-user or the content provider is willing to protect. The goal of this paper is to clearly describe the problem of processor-memory bus communications in this regard and the existing techniques applied to secure the communication channel through encryption - Performance overheads implied by those solutions will be extensively discussed in this paper.

  15. Environmental assessment of 9 European public bus transportation systems

    DEFF Research Database (Denmark)

    Nanaki, Eva; Koroneos, Christophis; Roset, Jaume;

    2017-01-01

    that affect the production of carbon dioxide (CO2) as well as of air pollutants, in 9 major European cities, aiming to provide a comprehensive overview of the actual knowledge on the atmospheric pollution from public transportation systems. CO2 emissions as well as air pollutants, such as CO, HC, PM, NOx......The transportation sector is one of the largest sources of EU’s greenhouse gas emissions. In 2011, transportation represented approximately 25 percent of total EU’s greenhouse gas emissions. Urban mobility accounts for 40% of all CO2 emissions of road transport and up to 70% of other pollutants...... are calculated for the diesel and CNG bus fleets of the European cities under study. Finally the environmental benefits, in terms of CO2 and CO, HC, PM, NOx emissions reductions, from the penetration of different biodiesel blends (from B10 to B100) to the bus fleets are estimated....

  16. Health effect of a bus ride in an urban environment

    Energy Technology Data Exchange (ETDEWEB)

    Takano, T.

    1983-07-01

    Health effects on subjects during a bus drive on an urban road were investigated in a real situation. Leukocyte count, adrenalin level in blood and urine, noradrenalin and dopamine in urine, diastolic blood pressure, and index of vascular resistance increased significantly on the drive day compared with the control day. A bus drive on an urban road induced enhanced sympathetic-adreno-medullary activity in real life as a result of the comprehensive effect of various factors. The concentrations of air pollutants were excessively high on the road, and correlated with traffic volume. It was concluded that the interactions between psychogenic, physical nonspecific and physical specific effects should be taken into consideration when evaluating human health effects of air pollution in the urban environment.

  17. THE DESIGN OF VMEBUS BRIDGE CONTROLLER WITH SHARC BUS

    Institute of Scientific and Technical Information of China (English)

    Wang Min; Wu Shunjun; Su Tao

    2005-01-01

    Targeting at the high expense and inflexibility to realize VMEbus bridge controller by professional Integrated Circuit (IC), this paper presents a scheme of adopting CPLD/FPGA (Complicated Programmable Logic Device/Field Programmable Gate Array) to design bridge controller between VMEbus and local bus. SHARC DSP (Digital Signal Processor) bus is an example. It has functions of nearly entire master/slave interface of VMEbus, and can act as DMA (Direct Memory Access) controller and perform block transfer in DMA or master processor initiative way without length limit. External circuit of the design is very simple. In comparison with special ICs, it has high performance to price ratio and can be easily applied to local buses of other processors with quite a little modification.

  18. Technology Update of a Control System Trough Corba Bus

    CERN Document Server

    Bertocchi, A; Buceti, G; Centioli, C; Muzio, D D; Iannone, F; Mazza, G; Panella, M; Vitale, V

    2001-01-01

    After more than 10 years of activity, FTU (Frascati Tokamak Upgrade) has to face the problem of taking advantage of the new hardware and software technology saving all the investments yet done. So, for example, the 20 years old Westinghouse PLCs (communicating only through a serial line) have to be leaved in operation while a web-based tool has to be released for plan monitoring purpose. CORBA bus has been demonstrated to be the answer to set up the communication between old and new hardware and software blocks. On FTU the control system is based on Basestar, a Digital/Compaq software suite. We will describe how the real time database of Basestar is now accessed by Java graphic tools, LabView and, in principle, any package accepting external routines. An account will be also done in the data acquisition area where a Camac serial highway driver has been integrated in the new architecture still through the CORBA bus

  19. Heat storage for a bus petrol internal-combustion engine

    Science.gov (United States)

    Vasiliev, Leonard L.; Burak, Victor S.; Kulakov, Andry G.; Mishkinis, Donatas A.; Bohan, Pavel V.

    The heat storage (HS) system for pre-heating a bus petrol internal combustion engine to starting was mathematically modelled and experimentally investigated. The development of such devices is an extremely urgent problem especially for regions with a cold climate. We discuss how HS works on the effect of absorption and rejection of heat energy at a solid-liquid phase change of a HS substance. In the first part of the paper a numerical method to calculate the HS mass-dimensional parameters and their characteristics are described. In the experimental part of the paper results are given of experiments on the pre-heating device aiding to start a carburettor engine under operational conditions and analysis of data received. Practical confirmation of the theoretical development of HS devices for a bus engine for starting by pre-heating is given.

  20. Investigation on full distribution CNC system based on SERCOS bus

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    A full distribution CNC system based on SERCOS bus is studied in accordance with the limitations of traditional PC-based motion card.The conventional PC-based motion control card is dispersed into several autonomous intelligent servo-control units with the function of servo driver.The autonomous intelligent servocontrol units realize the loop control of position,velocity and current.Interpolation computation is completed in PC and the computational results are transferred to every autonomous intelligent servo-control unit by high speed SERCOS bus.Software or hardware synchronization technology is used to ensure all servomotors are successive and synchronously running.The communication and synchronization technology of SERCOS are also researched and the autonomous intelligent servo-control card is developed byself.Finally,the experiment of circle contour process on a prototype system proves the feasibility.

  1. Capacity models on expressway near a bus bay stop with an access

    Institute of Scientific and Technical Information of China (English)

    张洪宾; 孙小端; 贺玉龙; 宇仁德

    2015-01-01

    To determinate the expressway capacity near a bus bay stop with an access, capacity models on the expressway near a bus stop with an access were developed on the basis of gap acceptance theory and queuing theory. Depending on a bus stop position to an entrance or an exit ramp, the capacity models were developed for four cases. Bus bay stops with overflow and bus bay stops without overflow were considered. A comparison of simulation experiment and model calculation was carried out. Results show that the suggested models have high accuracy and reliability, at bus arrival rate below 60 vehicles per hour (veh/h) or vehicle volumes at the entrance and the exit below 200 passenger cars units per hour (pcu/h), and there are no significant difference in the capacities for four cases. When bus arrival rate is above 240 veh/h, the capacities of all four cases will decline rapidly. With berth number increasing, the increasing of the capacities is no obvious for four cases. As the bus arrival rate and vehicle volumes at the entrance and the exit increase, bus stops located downstream of an entrance and upstream of an exit have a remarkably effect on the capacities. The latter case is much heavier than the former. Those results can be used to traffic design and optimization on urban expressway near a bus stop with an access.

  2. Common Traffic Violations of Bus Drivers in Urban China: An Observational Study.

    Directory of Open Access Journals (Sweden)

    Qiqi Wang

    Full Text Available To report common traffic violations in bus drivers and the factors that influence those violations in urban China.We conducted an observational study to record three types of traffic violations among bus drivers in Changsha City, China: illegal stopping at bus stations, violating traffic light signals, and distracted driving. The behaviors of bus drivers on 32 routes (20% of bus routes in the city were observed. A two-level Poisson regression examined factors that predicted bus driver violations.The incidence of illegal stopping at bus stations was 20.2%. Illegal stopping was less frequent on weekends, sunny days, and at stations with cameras, with adjusted incidence rate ratios (IRRs of 0.81, 0.65 and 0.89, respectively. The incidence of violating traffic light signals was 2.2%, and was lower on cloudy than sunny days (adjusted IRR: 0.60. The incidence of distracted driving was 3.3%. The incidence of distracted driving was less common on cloudy days, rainy or snowy days, and foggy/windy/dusty days compared to sunny days, with adjusted IRRs of 0.54, 0.55 and 0.07, respectively.Traffic violations are common in bus drivers in urban China and they are associated with the date, weather, and presence of traffic cameras at bus station. Further studies are recommended to understand the behavioral mechanisms that may explain bus driver violations and to develop feasible prevention measures.

  3. BUS BAY PERFORMANCE AND ITS INFLUENCE ON THE CAPACITY OF ROAD NETWORK IN DAR ES SALAAM

    Directory of Open Access Journals (Sweden)

    Nurdin K. Mushule

    2012-01-01

    Full Text Available One of major problems facing motorists in Dar es Salaam city today is congestion. Bus bays have a significant influence on the capacity of a roadway because they interfere with passing vehicles primarily when buses maneuver to pull into and out of bus bays. Bus bay stops will also interfere with vehicles movement if bus demand exceeds the bus bay capacity resulting in some buses waiting in the travel lane until the buses occupying the bay exit the bay. This paper presents the results of a study which was carried out to evaluate the bus bay performance and its influence on the capacity of the roadway network in the city of Dar es Salaam. The case study area covered 11 bus stops along Morogoro road from Ubungo to Magomeni Mapipa. Capacity of bus bays was studied using procedure outlined in the Transit Capacity and Quality of Service Manual of 2003. This enabled the researcher to determine parameters such as dwell times and clearance times which are major determinants of bus stop capacity. The results indicate that only 18% of the bus bay stops studied did not have adequate capacity to cater for the available demand. 9% did not have adequate capacity during peak hours but the capacity was adequate during off-peak hours. The remaining 73% of bus bay stops possess adequate capacity all the time. Although most bus bay stops studied possess adequate capacity, severe congestion was observed at these locations. This is due to erratic behavior of bus drivers who do not utilize the provided space for them to drop off and pick up passengers. Clearly, this is an area that requires more strict enforcement in order to ease the congestion problem in the city by operating the existing capacity more efficiently."

  4. City of Chula Vista hydrogen fuel cell bus demonstration project

    Energy Technology Data Exchange (ETDEWEB)

    Gustafson, B.; Bamberger, B.

    1996-10-01

    Hydrogen as an energy carrier and fuel has potential for various uses including electricity, commercial, residential, transportation, and industrial. It is an energy carrier that can be produced from a variety of primary sources and potentially can accomplish these various uses while significantly reducing pollution by substituting for or reducing the use of fossil fuels. One of the most immediate and potentially viable roles for hydrogen as an energy carrier will be its use as a transportation fuel, especially in densely populated urban areas where automotive emissions contribute significantly to air pollution. The Department of Energy`s commitment to research and development of hydrogen as an alternative fuel, and California`s Zero Emission Vehicle (ZEV) requirements, both provide the impetus and favorable circumstance for demonstrating hydrogen as a transportation fuel on an urban bus system. The purpose of this project is to demonstrate the feasibility of using solid polymer fuel cells in a hydrogen-powered electric drive system for an urban transit bus application. Fuel cell buses use hydrogen fuel and oxygen from the air to produce electrical power with the only byproduct being pure water. Proton Exchange Membrane (PEM) fuel cells are proposed for this project. Current evidence suggests that fuel cells, which rely on hydrogen and a process known as proton exchange to generate their power, appear to have an infinite life span. All exhaust pollution is completely eliminated, resulting in a Zero Emission Vehicle (ZEV). An urban bus system offers the potential for developing a market for the production of hydrogen propulsion technology due to extensive vehicular use in densely populated areas experiencing pollution from numerous sources, and because the central garaging facilities or the bus system facilitates fueling and maintenance functions.

  5. System investigation H2 bus fleet (technology, regulations, future development)

    International Nuclear Information System (INIS)

    In cooperation with Ansaldo Ricerche, ICIL have compiled a technical catalogue, providing the impartial descriptions, both of existing technology and regulations, and the likely future developments of these, as to remedy the first problem faced by a potential hydrogen bus fleet operator viz the absence of an impartial description of the available vehicle and fuels systems together with the absence of a description of regulatory and safety factors which need consideration. (orig.)

  6. Market brief : the alternative fuels bus market in India

    International Nuclear Information System (INIS)

    In 2003, alternative fuel bus technologies in India were valued at approximately $1.5 billion. There are an estimated 600,000 buses in India, of which 21 per cent are owned by public transit. Bus production is currently 33,000 per year and increasing at 4 per cent annually. The main alternative fuel bus technologies include fuel cells, compressed natural gas (CNG) and liquefied petroleum gas (LPG). Since urban centres in India are among the most polluted in the world, demand for these technologies is strong. India is ranked fifth in the world in terms of vehicles converted to natural gas. In 2003, New Delhi switched from diesel to CNG fuel for buses but has faced challenges because there is no well-developed underground distribution system and refilling times are long due to weak pressure at fueling stations. India's new $28 million fuel cell bus development project aims to place 8 fuel cell powered buses with the Delhi Transport Corporation. This market brief describes the potential for Canadian suppliers to enter into joint ventures to establish local production facilities and transfer technology expertise. It describes the key factors shaping market growth with particular reference to sector reform, and opportunities with actual and planned projects. The competitive environment was also discussed with reference to local capabilities, international competition, Canadian position, and a competitive advantage through Canadian government policies and initiatives. A section of the report on public-sector customers listed the companies that buy alternative fuel buses in India. Considerations for market-entry in India were also outlined

  7. Modelling urban bus transport emissions in Santiago de Cuba

    OpenAIRE

    Warren, James; Avila, Jordi Mirabent

    2010-01-01

    This study described and focuses on the public transport bus system in Santiago de Cuba. Specifically we explore the fuel consumption of the various diesel buses over a three year period from 2007 to 2009 and with a forecast for the forthcoming years. The study considers the potential for fuel savings through a variety of methods which are each described and then modelled. Pollution is also calculated for a variety of scenarios and some suggestions are made in order to lower the overall...

  8. Virtual Instrument Based on GPIB Interface Bus1

    Institute of Scientific and Technical Information of China (English)

    Xiao,Ying; Qi,Hanhong

    2004-01-01

    In this paper, we introduced the technique of GPIB businterface. Through the controlling of the GPIB interface board,the computer controlled the current source and the voltmeter, both of which have GPIB bus interface, and a virtual instrument testing system for I~V curve was composed. The virtual instrument front panel and the background graphical control program in Labview environment accomplish virtual instrument testing task along with the hardware system.

  9. Damping torque analysis for DC bus implemented damping control

    OpenAIRE

    W. Du; WANG, HAIFENG; Ju, P.; Dunn, R

    2010-01-01

    Damping torque analysis is a well-developed technique for understanding and studying power system oscillations. This paper presents the applications of damping torque analysis for DC bus implemented damping control in power transmission networks in two examples. The first example is the investigation of damping effect of shunt VSC (Voltage Source Converter) based FACTS voltage control, i.e., STATCOM (Static Synchronous Compensator) voltage control. It is shown in the paper that STATCOM voltag...

  10. An asynchronous controller for a daisychainable vme bus interrupter

    OpenAIRE

    Wollowski, Ralf; Beister, Jochen; Kuhn, Matthias

    1999-01-01

    An interrupter for use in a daisy-chained VME bus interrupt system has beendesigned and implemented as an asynchronous sequential circuit. The concur-rency of the processes posed a design problem that was solved by means of asystematic design procedure that uses Petri nets for specifying system and in-terrupter behaviour, and for deriving a primitive flow table. Classical designand additional measures to cope with non-fundamental mode operation yieldeda coded state-machine representation. Thi...

  11. An Electric Bus with a Battery Exchange System

    OpenAIRE

    Jeongyong Kim; Inho Song; Woongchul Choi

    2015-01-01

    As part of the ongoing effort to be independent of petroleum resources and to be free from pollutant emission issues, various electric vehicles have been developed and tested through their integration with real world systems. In the current paper, yet another application specific EV for public transportation, an electric bus, is introduced and explained with results from the pilot test program which was carried out under real traffic conditions. The main feature of the current system is a bat...

  12. FAKTOR PENYEBAB KERUSAKAN SISTEM MESIN PADA BUS APTB PPD

    OpenAIRE

    Laela Chairani; Yulita Veranda Usman; Nur Yulianti Hidayah

    2015-01-01

    Comfort and safety of public transportation, particularly APTB PPD buses, becomes high expectations for its customers. Those expectations must be supported by the application of a good engine maintenance system. By using the method of Reliability Centered Maintenance may be determined appropriate actions to mitigate damage. From the analysis known the failures of the APTB PPD bus are malfunctions of the fuel engine, power transfer systems, difficulty to move the gear lever, and lubricating sy...

  13. BC Transit Fuel Cell Bus Project: Evaluation Results Report

    Energy Technology Data Exchange (ETDEWEB)

    Eudy, L.; Post, M.

    2014-02-01

    This report evaluates a fuel cell electric bus demonstration led by British Columbia Transit (BC Transit) in Whistler, Canada. BC Transit is collaborating with the California Air Resources Board and the U.S. Department of Energy's National Renewable Energy Laboratory to evaluate the buses in revenue service. This evaluation report covers two years of revenue service data on the buses from April 2011 through March 2013.

  14. Evaluation of Bus Vibration Comfort Based on Passenger Crowdsourcing Mode

    Directory of Open Access Journals (Sweden)

    Hong Zhao

    2016-01-01

    Full Text Available Vibration comfort is an important factor affecting the quality of service (QoS of bus. In order to make people involved in supervising bus’s vibration comfort and improve passengers’ riding experience, a novel mode of passenger crowdsourcing is introduced. In this paper, comfort degree of bus vibration is calculated from bus’s vibration signals collected by passengers’ smartphones and sent through WiFi to the Boa web server which shows the vibration comfort on the LCD deployed in bus and maybe trigger alarm lamp when the vibration is beyond the threshold. Three challenges here have been overcome: firstly, space coordinate transformation algorithm is used to solve the constant drift of signals collected; secondly, a low-pass filter is designed to isolate gravity from signals real-timely via limited computing resources; thirdly, an embedded evaluation system is developed according to the calculation procedure specified by criterion ISO 2631-1997. Meanwhile, the model proposed is tested in a practical running environment, the vibration data in whole travel are recorded and analyzed offline. The results show that comfort degree of vibration obtained from the experimental system is identical with the truth, and this mode is proved to be effective.

  15. The AI Bus architecture for distributed knowledge-based systems

    Science.gov (United States)

    Schultz, Roger D.; Stobie, Iain

    1991-01-01

    The AI Bus architecture is layered, distributed object oriented framework developed to support the requirements of advanced technology programs for an order of magnitude improvement in software costs. The consequent need for highly autonomous computer systems, adaptable to new technology advances over a long lifespan, led to the design of an open architecture and toolbox for building large scale, robust, production quality systems. The AI Bus accommodates a mix of knowledge based and conventional components, running on heterogeneous, distributed real world and testbed environment. The concepts and design is described of the AI Bus architecture and its current implementation status as a Unix C++ library or reusable objects. Each high level semiautonomous agent process consists of a number of knowledge sources together with interagent communication mechanisms based on shared blackboards and message passing acquaintances. Standard interfaces and protocols are followed for combining and validating subsystems. Dynamic probes or demons provide an event driven means for providing active objects with shared access to resources, and each other, while not violating their security.

  16. Safety evaluation of a hydrogen fueled transit bus

    Energy Technology Data Exchange (ETDEWEB)

    Coutts, D.A.; Thomas, J.K.; Hovis, G.L.; Wu, T.T. [Westinghouse Savannah River Co., Aiken, SC (United States)

    1997-12-31

    Hydrogen fueled vehicle demonstration projects must satisfy management and regulator safety expectations. This is often accomplished using hazard and safety analyses. Such an analysis has been completed to evaluate the safety of the H2Fuel bus to be operated in Augusta, Georgia. The evaluation methods and criteria used reflect the Department of Energy`s graded approach for qualifying and documenting nuclear and chemical facility safety. The work focused on the storage and distribution of hydrogen as the bus motor fuel with emphases on the technical and operational aspects of using metal hydride beds to store hydrogen. The safety evaluation demonstrated that the operation of the H2Fuel bus represents a moderate risk. This is the same risk level determined for operation of conventionally powered transit buses in the United States. By the same criteria, private passenger automobile travel in the United States is considered a high risk. The evaluation also identified several design and operational modifications that resulted in improved safety, operability, and reliability. The hazard assessment methodology used in this project has widespread applicability to other innovative operations and systems, and the techniques can serve as a template for other similar projects.

  17. Perspective Application of Passive Optical Network with Optimized Bus Topology

    Directory of Open Access Journals (Sweden)

    P. Lafata

    2012-06-01

    Full Text Available Passive optical networks (PONs represent a promising solution for modern access telecommunication networks.These networks are able to meet the increasing demands on transmission rate for demanding multimedia services,while they can offer typical shared transmission speed of 1.25 or 2.5 Gbps. The major role in deploying opticaldistribution networks ODNs plays the maximum attenuable loss, which is caused mainly by passive optical splitters.This paper proposes an innovative application of passive optical networks with optimized bus topology especially forlocal backbone data networks. Due to using only passive components, it is necessary to optimize certain parameters,especially an overall attenuation balance. Considering the possibility of such optimization, the passive optical networkwith optimized bus topology provides several interesting opportunities for specific applications. This paper will presentselected aspects of passive optical networks and splitters with asymmetric splitting ratio. The essential part is focusedon the practical demonstration of their use to optimize the passive optical network with bus topology, which acts as alocal backbone network for structured cabling systems, and for local data networks in large buildings.

  18. Designing Parallel Bus Using Universal Asynchronous Receiver Transmitter

    Directory of Open Access Journals (Sweden)

    Satyandra Sharad

    2013-04-01

    Full Text Available This paper entitled “DESIGNING PARALLEL BUSUSING UNIVERSAL ASYNCHRONOUS RECEIVER TRANSMITTER” is designed to the core of a UART interface module, which includes both receive and transmit modules, and the command parser. This paper will be a viable solution to design parallel buses with the help of UART. In the test bench , there is a RFM(register file model to which we write/read back data from just to check our design .The txt file issues serial inputs to the core and the core outputs parallel data and address in the form of bus. This bus is connected to our RFM (register file model instantiated in the test bench along with the design. This makes easy to retrieve parallel data from serial input. The base of the paper is to use microcontroller along with other components to interface with the physical world. In contrast, most serial communication must first be converted back into parallel form by a universal asynchronous receiver/transmitter (UART before they may be directly connected to a data bus. Both Transmissions (Parallel and Serial are used to connect peripheral devices and enable us to communicate with these devices. The UART core described here is designed using VHDL and implemented on Xilinx Vertex FPGA.

  19. An Electric Bus with a Battery Exchange System

    Directory of Open Access Journals (Sweden)

    Jeongyong Kim

    2015-07-01

    Full Text Available As part of the ongoing effort to be independent of petroleum resources and to be free from pollutant emission issues, various electric vehicles have been developed and tested through their integration with real world systems. In the current paper, yet another application specific EV for public transportation, an electric bus, is introduced and explained with results from the pilot test program which was carried out under real traffic conditions. The main feature of the current system is a battery exchanging mechanism mounted on the roof of the bus. The current configuration certainly requires an externally fabricated battery exchanging robot system that would complement the electric bus for a fully automated battery exchanging process. The major advantage of the current system is the quick re-charging of the electric energy through the physical battery exchange and the possible utilization of the battery exchange station as a mini scale energy storage system for grid system peak power shaving. With the total system solution approach for the public transportation system, it is fully expected to create outstanding business opportunities in number of areas such as battery suppliers, battery exchanging station management, battery leasing and many more.

  20. Ring Bus Architecture for a Solid-State Recorder

    Science.gov (United States)

    Walker, W. John; Kopf, Edward; Cox, Brian

    2008-01-01

    A document concisely describes a ring bus architecture for a proposed solid-state recorder (SSR) that would serve as buffer of data to be transmitted from a spacecraft to Earth. This architecture would afford fault tolerance needed for reliable operation in an anticipated high-radiation environment in which traditional SSRs cannot operate reliably. Features of the architecture include one or more controller boards and multiple memory boards interconnected in a ringlike topology. The interconnections would be high-speed serial links complying with the Institute of Electrical and Electronics Engineers (IEEE) standard 1393 (which pertains to a spaceborne fiber-optic data bus). Accordingly, each controller and memory board would be equipped with an IEEE-1393-compliant ring-bus-interface unit. The ringlike topology and the multiplicity of memory boards (and, optionally, of controller boards) would afford the redundancy needed for fault tolerance. Each board would be a fault-containment region. The IEEE 1393 links could be routed so that the SSR would continue to function even in the event of multiple failures. This architecture would also support scalability over a wide range. In a fully redundant configuration, it could accommodate between 1 and 125 memory boards.

  1. The Data Acquisition System Based on PMC Bus

    CERN Document Server

    Igarashi, Y; Higuchi, T; Ikeno, M; Inoue, E; Itoh, R; Kodama, H; Murakami, T; Nagasaka, Y; Nakao, M; Nakayoshi, K; Saitoh, M; Shimazaki, S; Suzuki, S Y; Tanaka, M; Tauchi, K; Varner, G; Yamauchi, M; Yasu, Y; Katayama, T; Watanabe, K; Ishizuka, M; Onozawa, S

    2003-01-01

    High energy physics experiments in KEK/Japan rush into over KHz trigger stage. Thus, we need a successor of the data acquisition(DAQ) system that replaces the CAMAC or FASTBUS systems. To meet these needs, we have developed a DAQ system which includes a crate, base-board modules, daughter cards for front-end A/D or T/D conversion, and back-end communication cards for data transfer and timing control. The size of the crate is for the 9U Euro-cards with the standard VME32 bus and extension connectors for power supply. The base-board comprises of a local bus with the sequencer connected to the front-end daughter cards via event buffering FIFOs, and the standard PMC (PCI mezzanine card) bus to be set a PMC processor unit to reduce data size from the front-end daughter cards. A data transfer module, which is connected to the event building system, and a trigger control unit, which communicates with the central timing controller are installed on the back-end communication card connected to the rear end of the base-...

  2. 76 FR 54244 - Telecommunications Service Priority System

    Science.gov (United States)

    2011-08-31

    ... currently approved collection: 1670-0005, Telecommunications Service Priority (TSP) System. DHS previously published this information collection request (ICR) in the Federal Register, 76 FR 2011-13953 (June 7, 2011... SECURITY Telecommunications Service Priority System AGENCY: National Protection and Programs...

  3. Reframing Recreation as a Public Policy Priority

    Science.gov (United States)

    Lovell, Phillip

    2011-01-01

    Issues pertaining to children often struggle to become public policy priorities. A clear demonstration of this phenomenon is the degree to which children are supported in the federal budget in comparison to other priorities. If issues pertaining to children struggle for the policy spotlight, subissues pertaining to them face an even greater…

  4. Research priorities: women in Africa.

    Science.gov (United States)

    Okeyo, A P

    1979-01-01

    In December 1979, an Expert Meeting on Research and Data Collection on Women and Development was convened in Nairobi for the purpose of defining research priorities and methodological approaches for studying the role of African women in development. After reviewing current literature relevant to the subject matter, the participants developed a number of hypotheses regarding the impact of development activities on the role and status of women, and recommended that these hypotheses be tested in future reserach. In general, agrarian reform, mechanization of agriculture, the introduction of cash cropping, and modernization were hypothesized as having a negative impact on the role, status, productive activities, and nutritional standards of women. Other hypotheses stated that development programs and agricultural extension services tended to neglect women. Recommended research methodologies include: 1) efforts to involve the community members in the development and implementation of research projects undertaken in their communities; 2) increased use of local experts and community members in data collection; and 3) interdisciplinary collaboration. The participants also recommended that each country compile a statistical profile on the women in their countries. The profiles should include comparable information on: 1) fertility; 2) educational levels, employment status, and income levels for women; 3) household composition; and 4) types of services available to women. PMID:538796

  5. The 50 Constellation Priority Sites

    Science.gov (United States)

    Noble, S.; Joosten, K.; Eppler, D.; Gruener, J.; Mendell, W.; French, R.; Plescia, J.; Spudis, P.; Wargo, M.; Robinson, M.; Lucey, P.

    2009-01-01

    The Constellation program (CxP) has developed a list of 50 sites of interest on the Moon which will be targeted by the LRO narrow angle camera. The list has also been provided to the M team to supplement their targeting list. This list does not represent a "site selection" process; rather the goal was to find "representative" sites and terrains to understand the range of possible surface conditions for human lunar exploration to aid engineering design and operational planning. The list compilers leveraged heavily on past site selection work (e.g. Geoscience and a Lunar Base Workshop - 1988, Site Selection Strategy for a Lunar Outpost - 1990, Exploration Systems Architecture Study (ESAS) - 2005). Considerations included scientific, resource utilization, and operational merits, and a desire to span lunar terrain types. The targets have been organized into two "tiers" of 25 sites each to provide a relative priority ranking in the event of mutual interference. A LEAG SAT (special action team) was established to validate and recommend modifications to the list. This SAT was chaired by Dr. Paul Lucey. They provided their final results to CxP in May. Dr. Wendell Mendell will organize an on-going analysis of the data as they come down to ensure data quality and determine if and when a site has sufficient data to be retired from the list. The list was compiled using the best available data, however, it is understood that with the flood of new lunar data, minor modifications or adjustments may be required.

  6. Proximal Priority Laser Therapy: PPLT

    Science.gov (United States)

    Ohshiro, Toshio

    2004-09-01

    The author has, in the past, classified treatment methods for pain geometrically as point, line, two-dimensional, three-dimensional treatment and has used these over the years. However as a practitioner of western medicine, the author originally treated pain only directed at the painful site, and encountered cases where local treatment did not suffice. The author proved with SPECT and the Rand Phantom that treating the neck which is the midpoint of the brain, the center of the nervous system and the heart, the center of circulation, increased cerebral blood flow and also that laser emitted to neck will reach the spinal chord no matter from where on the neck the laser is emitted. From such research and 25 years of clinical experience, the author has created an anatomy based, systemic treatment method called the Proximal Priority Laser Therapy (PPLT) where not only the cerebral cortex, spinal chord and peripheral nerves are treated but also the tracts of blood vessels and lymph ducts are treated as well. Treatment method and cases are presented herein.

  7. Life cycle cost analysis of a car, a city bus and an intercity bus powertrain for year 2005 and 2020

    International Nuclear Information System (INIS)

    The international economy, in the beginning of the 20th century, is characterized by uncertainty about the supply and the price of oil. Together with the fast decrease of electrical propulsion component prices, it becomes more and more cost effective to develop vehicles with alternative powertrains. This paper focuses on two questions: Are alternative powertrains especially cost effective for specific applications?; How does an increased fossil fuel price influences the choose of powertrain? To assess these questions, a computer tool named THEPS, developed in a Ph.D. project, is used. Three applications and three scenarios are analysed. The applications, a car, a city bus and an intercity bus, are vehicles all assumed to operate in Sweden. One scenario represents year 2005, the other two year 2020. The two future scenarios are characterized by different fossil fuel prices. The study, presented in the paper, indicates that alternative powertrains can be competitive from a cost perspective, in some applications, already in year 2005. It is for example cost effective to equip a city bus, running in countries with a high fuel price, with a hybrid powertrain. The study also indicates that pure electric, hybrid and/or fuel cell cars will probably be a more cost effective choice than conventional cars in year 2020. Another indication is that it will not be clear which powertrain concept to choose. The reason is that many cost effective powertrain concepts will be offered. The best choice will depend on the application

  8. Bitmap-Wise Wireless M-Bus Coordination for Sustainable Real Time Energy Management

    Directory of Open Access Journals (Sweden)

    Kwang-il Hwang

    2014-07-01

    Full Text Available Even though WM-Bus is being considered to be the most promising network protocol for smart metering, it is not suitable for a sustainable real-time home energy management system (HEMS, which requires higher reliability and longer lifetime despite real time bi-directional communications. Therefore, in this paper we propose a Bitmap-wise WM-Bus (BWM-Bus, coping well with sustainable real-time HEMS. In particular, the proposed scheme addresses the several problems in WM-Bus for HEMS by introducing novel functions: asynchronous meter trigger, adaptive slot scheduling, and bitmap-wise retransmission request. Through experiments, we demonstrate that BWM-Bus guarantees higher data success ratio with lower data aggregation time, as well as longer lifetime than WM-Bus standard.

  9. Identification of voltage stability condition of a power system using measurements of bus variables

    Directory of Open Access Journals (Sweden)

    Durlav Hazarika

    2014-12-01

    Full Text Available Several online methods were proposed for investigating the voltage stability condition of an interconnected power system using the measurements of voltage and current phasors at a bus. For this purpose, phasor measurement units (PMUs are used. A PMU is a device which measures the electrical waves on an electrical network, using a common time source (reference bus for synchronisation. This study proposes a method for online monitoring of voltage stability condition of a power system using measurements of bus variables namely – (i real power, (ii reactive power and (iii bus voltage magnitude at a bus. The measurements of real power, reactive power and bus voltage magnitude could be extracted/captured from a smart energy meter. The financial involvement for implementation of the proposed method would significantly lower compared with the PMU-based method.

  10. Design and VHDL simulation of a special high speed spaceborne bus controller

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    The application of high speed data bus on the satellites having several remote sensors could not only satisfy the demand of high speed data transfer,but also could reuse the equipment at both the com-ponent and subsystem levels for other space missions,thus reducing the costs of on-board processing system integration.In this article,a special high speed data bus with simple interfaces is chosen for transferring the data produced by remote sensors and other instrumentations.First,the function and the structure of the data bus are discussed carefully.And then,the bus controller,which is a key mod-ule of the data bus,is designed.At last,the function and performance of the bus controller are verified by VHDL simulation.

  11. SunLine Transit Agency Advanced Technology Fuel Cell Bus Evaluation: Third Results Reports

    Energy Technology Data Exchange (ETDEWEB)

    Eudy, L.; Chandler, K.

    2012-05-01

    This report describes operations at SunLine Transit Agency for their newest prototype fuel cell bus and five compressed natural gas (CNG) buses. In May 2010, SunLine began operating its sixth-generation hydrogen fueled bus, an Advanced Technology (AT) fuel cell bus that incorporates the latest design improvements to reduce weight and increase reliability and performance. The agency is collaborating with the U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL) to evaluate the bus in revenue service. NREL has previously published two reports documenting the operation of the fuel cell bus in service. This report provides a summary of the results with a focus on the bus operation from July 2011 through January 2012.

  12. SunLine Transit Agency Advanced Technology Fuel Cell Bus Evaluation: Fourth Results Report

    Energy Technology Data Exchange (ETDEWEB)

    Eudy, L.; Chandler, K.

    2013-01-01

    SunLine Transit Agency, which provides public transit services to the Coachella Valley area of California, has demonstrated hydrogen and fuel cell bus technologies for more than 10 years. In May 2010, SunLine began demonstrating the advanced technology (AT) fuel cell bus with a hybrid electric propulsion system, fuel cell power system, and lithium-based hybrid batteries. This report describes operations at SunLine for the AT fuel cell bus and five compressed natural gas buses. The U.S. Department of Energy's National Renewable Energy Laboratory (NREL) is working with SunLine to evaluate the bus in real-world service to document the results and help determine the progress toward technology readiness. NREL has previously published three reports documenting the operation of the fuel cell bus in service. This report provides a summary of the results with a focus on the bus operation from February 2012 through November 2012.

  13. Distributed Priority Synthesis and its Applications

    CERN Document Server

    Cheng, Chih-Hong; Yan, Rongjie; Ruess, Harald

    2011-01-01

    We present an extension of the tool VissBIP, including a new algorithm which first references the communication architecture in component-based systems then synthesizes deployable priorities to ensure that the system is safe and deadlock-free. As the synthesized priorities are guaranteed to be deployable, our work reduces related efforts in finding strategies to execute priorities distributively. When the normal method of distributed priority synthesis fails, the tool proceeds by three refinement methods. The first is to equip static knowledge on selected components and resynthesize. The second method is to allow transmitting state information in the communication process. To reduce the amount of information transfer, we extract information from the unsatisfiable core (during the fix process) and successively increase the amount of additional information when required. The last method is to allow transitivity of priorities to only hold when the architecture is supported. To support complex updates, we explici...

  14. Best Operational and Maintenance Practices for City Bus Fleets to Maximize Fuel Economy

    OpenAIRE

    World Bank

    2011-01-01

    In most large cities in developing countries, buses continue to be the public transport option of choice, carrying a large share of urban travelers. However, transit bus companies in these countries are often cash-strapped. In many cases, the operating cost per bus kilometer exceeds revenues and bus fares are often kept low irrespective of the cost of providing service. Many cities are dom...

  15. Reducing carbon emissions by introducing electric vehicle enhanced dedicated bus lanes

    OpenAIRE

    Doolan, Ronan; Muntean, Gabriel-Miro

    2014-01-01

    Most cities have special lanes dedicated to buses, however these lanes are rarely used at full capacity. At the same time governments around the world are encouraging people to buy electric vehicles. This paper proposes the creation of electric vehicle enhanced dedicated bus lanes (E-DBL), by allowing electric vehicles access to bus lanes, in order to improve the use of road capacity. By opening bus lanes to electric vehicles, traffic congestion could be eased, the range ...

  16. The impact of bus drivers ’ lifestyle on the occurrence of health problems and absenteeism

    OpenAIRE

    Andrej Jerman; Maja Meško

    2016-01-01

    Research Question: Do bus drivers’ lifestyles affect the occurrence of health problems and absenteeism? Purpose: The purpose of the study was to determine whether the lifestyle of professional bus drivers affects the occurrence of health problems and the phenomenon of absenteeism. Method: A quantitative research method was used in the research. Data were collected using a structured questionnaire, on a sample of 230 professional bus drivers from differ...

  17. The Bus Extension Module Design and Verification of POSAFE-Q Using LVDS

    International Nuclear Information System (INIS)

    This paper described the Bus Extension Module using Low Voltage Differential Signal (LVDS). A Bus Extension Module use Safety-Related PLC (Programmable Logic Controller), called POSAFE-Q (made by POSCO ICT), for handling many data (I/O) extension rack. A processor module of POSAFE-Q can control I/O Module installed another rack. This paper explains Bus Extension Module and Data transfer technology using LVDS. (author)

  18. Introduction to corridor selection & assessment for Bus Rapid Transit System (BRTS) in Hyderabad

    OpenAIRE

    Bhanu Kireeti Chanda; Maddali Sai Satya Goutham

    2014-01-01

    Bus rapid transit system is an innovation and it is up gradation to the present transport system. BRT is affordable, adaptable and cost effective. The term of rapid transit system means a form of high speed urban passenger transportation. Here, the mode of transportation is bus hence it is called as bus rapid transit system (BRTS). Transportation facilities and the system will be different form different countries. Especially for the developing countries, transportation is a problem and BR...

  19. The influence of bus stop on traffic flow with velocity-difference-separation model

    Science.gov (United States)

    Zheng, Pengjun; Wang, Wei; Ge, Hongxia

    2016-06-01

    Based on velocity-difference-separation model, the mixed traffic flow on two-lane road is investigated. For a fixed road length, the influence of bus and bus stops on traffic flow is studied with the increasing traffic density. Compared with the result without bus stops given by Li et al., a new traffic state is found, which is valuable for studying the impacts of public transport on urban traffic flow.

  20. Priorities for CMV vaccine development.

    Science.gov (United States)

    Krause, Philip R; Bialek, Stephanie R; Boppana, Suresh B; Griffiths, Paul D; Laughlin, Catherine A; Ljungman, Per; Mocarski, Edward S; Pass, Robert F; Read, Jennifer S; Schleiss, Mark R; Plotkin, Stanley A

    2013-12-17

    A multidisciplinary meeting addressed priorities related to development of vaccines against cytomegalovirus (CMV), the cause of congenital CMV (cCMV) disease and of serious disease in the immunocompromised. Participants discussed optimal uses of a CMV vaccine, aspects of clinical study design, and the value of additional research. A universal childhood CMV vaccine could potentially rapidly reduce cCMV disease, as infected children are sources of viral transmission to seronegative and seropositive mothers. A vaccine administered to adolescents or adult women could also reduce cCMV disease by making them immune prior to pregnancy. Clinical trials of CMV vaccines in women should evaluate protection against cCMV infection, an essential precursor of cCMV disease, which is a more practical and acceptable endpoint for assessing vaccine effects on maternal-fetal transmission. Clinical trials of vaccines to evaluate prevention of CMV disease in stem cell transplant recipients could use CMV viremia at a level triggering pre-emptive antiviral therapy as an endpoint, because widespread use of pre-emptive and prophylactic antivirals has rendered CMV-induced disease too rare to be a practical endpoint for clinical trials. In solid organ transplant patients, CMV-associated disease is sufficiently common for use as a primary endpoint. Additional research to advance CMV vaccine development should include identifying factors that predict fetal loss due to CMV, determining age-specific incidence and transmission rates, defining the mechanism and relative contributions of maternal reactivation and re-infection to cCMV disease, developing assays that can distinguish between reactivation and re-infection in seropositive vaccinees, further defining predictors of sequelae from cCMV infection, and identifying clinically relevant immune response parameters to CMV (including developing validated assays that could assess CMV antibody avidity) that could lead to the establishment of immune

  1. A Prediction System Using a P2P Overlay Network for a Bus Arrival System

    Directory of Open Access Journals (Sweden)

    Ssu-Hsuan Lu

    2014-01-01

    Full Text Available Along with the evolution of times and the surge of metropolitan populations, government agencies often promote the construction of public transport. Unlike rail transportation or rapid transit systems, it is often difficult to estimate the vehicle arrival times at each station in a bus transportation system due to metropolitan transportation congestion. Traffic status is often monitored using wireless sensor networks (WSNs. However, WSNs are always separated from one another spatially. Recent studies have considered the connection of multiple sensor networks. This study considers a combination view of peer-to-peer (P2P overlay networks and WSN architecture to predict bus arrival times. Each bus station, which is also a P2P overlay peer, is connected in a P2P overlay network. A sensor installed in each bus can receive data via peers to obtain the moving speed of a bus. Then, each peer can exchange its data to predict bus arrival times at bus stations. This method can considerably increase the accuracy with which bus arrival times can be predicted and can provide traffic status with high precision. Furthermore, these data can also be used to plan new bus routes according to the information gathered.

  2. Bitmap-Wise Wireless M-Bus Coordination for Sustainable Real Time Energy Management

    OpenAIRE

    Kwang-il Hwang; Sung-wook Nam

    2014-01-01

    Even though WM-Bus is being considered to be the most promising network protocol for smart metering, it is not suitable for a sustainable real-time home energy management system (HEMS), which requires higher reliability and longer lifetime despite real time bi-directional communications. Therefore, in this paper we propose a Bitmap-wise WM-Bus (BWM-Bus), coping well with sustainable real-time HEMS. In particular, the proposed scheme addresses the several problems in WM-Bus for HEMS by introdu...

  3. An interactive wireless communication system for visually impaired people using city bus transport.

    Science.gov (United States)

    Wang, Hsiao-Lan; Chen, Ya-Ping; Rau, Chi-Lun; Yu, Chung-Huang

    2014-05-01

    Visually impaired people have difficulty accessing information about public transportation systems. Several systems have been developed for assisting visually impaired and blind people to use the city bus. Most systems provide only one-way communication and require high-cost and complex equipment. The purpose of this study is to reduce the difficulties faced by visually impaired people when taking city buses, using an interactive wireless communication system. The system comprised a user module and a bus module to establish a direct one-to-one connection. When the user inputs 4-digit numbers, the user module immediately sends out the information. If the bus module receives the matched bus number, it buzzes and the warning LED flashes to notify the bus driver that someone is waiting to board on the bus. User tests were conducted by two visually impaired people in a simulated vehicle and a city bus. The success rate of interactive wireless communication, recognizing the arrival of the bus and boarding the correct bus reached 100% in all of the tests. The interactive wireless communication aid system is a valid and low-cost device for assisting visually impaired people to use city buses.

  4. Demand Priority Protocol Simulation and Evaluation

    Institute of Scientific and Technical Information of China (English)

    ZHAN Yongzhao; SONG Shunlin; XIE Li

    1999-01-01

    A new network protocol (DemandPriority Protocol) environment can provide more satisfying service fordifferent urgent transmission requests. In this paper, in order toprovide guidance for the selection of environment of multimedia datatransmission in Computer Supported Cooperative Work better, anobject-oriented protocol specification language based on C++ is used todesign a virtual environment of multiworkstation of computer cooperativework and to simulate exe-cution of demand priority network protocoland then the performances of various transmission requests are analyzed.Finally, an evaluation of the demand priority LAN is given.

  5. Bus Pre-signals Control Technology and Application at Urban Road Intersections%城市道路交叉口公交预信号控制方法及其应用研究

    Institute of Scientific and Technical Information of China (English)

    徐笑晓; 保丽霞

    2011-01-01

    Bus pre-signals control is used to enable buses to move ahead of queues on the approach at signalized junctions. Firstly, the bus pre-signals technology at home and abroad was studied in this paper. Then, the pre-signal setting conditions around intersection were presented including vehicle lanes, traffic volume, buses frequency, etc. Bus exclusive waiting district layout was given and a length computing model was adjusted after experiments. Further more, the intersection stop line, lanes distribution as well as layout of bus priority detectors were put forward. Luban-Fuxin intersection was implemented after bus pre-signal conditions investigation. The second stop line was set and the signal timing with coordinated main control was calculated. The evaluation based on PARAMICS shows that the bus waiting time decreases by 28% while social vehicles delay increases by 6%. Thus, the goal of signal priority is achieved.%综述了公交预信号的国内外技术现状,提出城市道路交叉口公交预信号设置条件,给出了公交预置区车道布局方式,通过实验修正了公交专用候驶区长度计算模型,并给出了交叉口区域停车线、车道分布及公交优先检测器的布设.以上海市鲁班路复兴中路路口为应用对象,调查了公交预信号可实施条件,并计算了第二停车线设置位置,计算出车道灯先红先绿信号控制时间,论文基于PA-RAMICS仿真评估表明1 h内该路口公交车等待时间减少了28%,社会车辆平均等待时间增加了6%,达到公交信号优先的目的.

  6. BC Transit Fuel Cell Bus Project Evaluation Results: Second Report

    Energy Technology Data Exchange (ETDEWEB)

    Eudy, L.; Post, M.

    2014-09-01

    Second report evaluating a fuel cell electric bus (FCEB) demonstration led by British Columbia Transit (BC Transit) in Whistler, Canada. BC Transit is collaborating with the California Air Resources Board and the U.S. Department of Energy's National Renewable Energy Laboratory to evaluate the buses in revenue service. NREL published its first report on the demonstration in February 2014. This report is an update to the previous report; it covers 3 full years of revenue service data on the buses from April 2011 through March 2014 and focuses on the final experiences and lessons learned.

  7. Fuel options for public bus fleets in Sweden

    OpenAIRE

    Xylia, Maria; Silveira, Semida

    2015-01-01

    The Swedish public transport sector has defined two major targets, i.e., to run 90% of the total vehicle kilometers of the fleet on non-fossil fuels and double the volume of travel via public transport by 2020, increasing the share of public transport in relation to the total personal transport in the country . The f3 report Fuel options for public bus fleets in Sweden highlights the challenges and solutions encountered, particularly when it comes to the adoption of renewable fuels in the reg...

  8. Energy model of network-on-chip and a bus

    OpenAIRE

    Wolkotte, Pascal T.; Smit, Gerard J.M.; Kavaldjiev, Nikolay; Becker, Jens E.; Becker, Jurgen

    2005-01-01

    A Network-on-Chip (NoC) is an energy-efficient onchip communication architecture for Multi-Processor Systemon- Chip (MPSoC) architectures. In earlier papers we proposed two Network-on-Chip architectures based on packet-switching and circuit-switching. In this paper we derive an energy model for both NoC architectures to predict their energy consumption per transported bit. Both architectures are also compared with a traditional bus architecture. The energy model is primarily needed to find a ...

  9. Energy Model of Networks-on-Chip and a Bus

    OpenAIRE

    Wolkotte, Pascal T.; Smit, Gerard J.M.; Kavaldjiev, Nikolay; Becker, Jens E.; Becker, Jürgen

    2005-01-01

    A Network-on-Chip (NoC) is an energy-efficient onchip communication architecture for Multi-Processor Systemon-Chip (MPSoC) architectures. In earlier papers we proposed two Network-on-Chip architectures based on packet-switching and circuit-switching. In this paper we derive an energy model for both NoC architectures to predict their energy consumption per transported bit. Both architectures are also compared with a traditional bus architecture. The energy model is primarily needed to find a n...

  10. DC Bus Regulation with a Flywheel Energy Storage System

    Science.gov (United States)

    Kenny, Barbara H.; Kascak, Peter E.

    2003-01-01

    This paper describes the DC bus regulation control algorithm for the NASA flywheel energy storage system during charge, charge reduction and discharge modes of operation. The algorithm was experimentally verified with results given in a previous paper. This paper presents the necessary models for simulation with detailed block diagrams of the controller algorithm. It is shown that the flywheel system and the controller can be modeled in three levels of detail depending on the type of analysis required. The three models are explained and then compared using simulation results.

  11. Distributed Data Acquisition and Control by Software Bus

    Institute of Scientific and Technical Information of China (English)

    Cecil Bruce-Boye; Dmitry A. Kazakov

    2004-01-01

    Increasing global competition forces manufacturers of products from all technical fields to guarantee a high product quality for a long period of time. At the same time it is necessary to minimize production costs. In order to meet all these requirements, on-line data acquisition and processing are of increasing importance in distributed automation systems. A software bus operating on industrial Ethernet has an ability to minimize operating costs by offering easy installation, scalability,high degree of reliability and remote monitoring and control.

  12. Bus Stops, Bus stops created from hard copy CAT transit maps. Includes information on if there is a shelter present or not., Published in 2010, 1:4800 (1in=400ft) scale, City of Bismarck.

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — This Bus Stops dataset, published at 1:4800 (1in=400ft) scale, was produced all or in part from Hardcopy Maps information as of 2010. It is described as 'Bus stops...

  13. 76 FR 32980 - Telecommunications Service Priority (TSP) System

    Science.gov (United States)

    2011-06-07

    ... SECURITY Telecommunications Service Priority (TSP) System AGENCY: National Protection and Programs... telecommunications vendors to provide priority provisioning and restoration of telecommunications services supporting..., National Communications System. Title: Telecommunications Service Priority System. OMB Number:...

  14. Funnel Heap - A Cache Oblivious Priority Queue

    DEFF Research Database (Denmark)

    Brodal, Gerth Stølting; Fagerberg, Rolf

    2002-01-01

    model. Arge et al. recently presented the first optimal cache oblivious priority queue, and demonstrated the importance of this result by providing the first cache oblivious algorithms for graph problems. Their structure uses cache oblivious sorting and selection as subroutines. In this paper, we devise...... an alternative optimal cache oblivious priority queue based only on binary merging. We also show that our structure can be made adaptive to different usage profiles....

  15. Global Conservation Priorities for Marine Turtles

    OpenAIRE

    Bryan P Wallace; Dimatteo, Andrew D.; Alan B Bolten; Chaloupka, Milani Y.; Hutchinson, Brian J.; F Alberto Abreu-Grobois; Jeanne A Mortimer; Seminoff, Jeffrey A.; Diego Amorocho; Bjorndal, Karen A; Jérôme Bourjea; Bowen, Brian W; Raquel Briseño Dueñas; Paolo Casale; Choudhury, B. C.

    2011-01-01

    Where conservation resources are limited and conservation targets are diverse, robust yet flexible priority-setting frameworks are vital. Priority-setting is especially important for geographically widespread species with distinct populations subject to multiple threats that operate on different spatial and temporal scales. Marine turtles are widely distributed and exhibit intra-specific variations in population sizes and trends, as well as reproduction and morphology. However, current global...

  16. Bus Stops, Maryland Transit Administration Local and Commuter Bus Stops, Published in 2013, 1:24000 (1in=2000ft) scale, Maryland Transit Administration.

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — This Bus Stops dataset, published at 1:24000 (1in=2000ft) scale, was produced all or in part from Other information as of 2013. It is described as 'Maryland Transit...

  17. Bus Routes, This shapefile contains lines that follow the path of the existing bus routes, Published in 2006, Charlotte Area Transit System.

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — This Bus Routes dataset, was produced all or in part from Other information as of 2006. It is described as 'This shapefile contains lines that follow the path of...

  18. UNIVERSALIZATION OF BUS BODY FACING DETAILS AND PRODUCTION TOOLING FOR THEIR MANUFACTURING

    Directory of Open Access Journals (Sweden)

    M. Taranenko

    2009-01-01

    Full Text Available The directions concerning bus body production costs reduction based on large-size facing details stamping on electric-hydraulic presses are considered. The engineering of unified large-size facing detail blanks, manufacturing processes and variants of unified technological tooling for bus body facing details production, including simple- or multi-type details are described.

  19. 49 CFR 571.131 - Standard No. 131; School bus pedestrian safety devices.

    Science.gov (United States)

    2010-10-01

    ... devices. S1. Scope. This standard establishes requirements for devices that can be installed on school... a stopped school bus and striking pedestrians in the vicinity of the bus. S3. Application. This standard applies to school buses other than multifunction school activity buses. S4. Definitions....

  20. Evoking Emotions and Unpacking Layered Histories through Young Children's Illustrations of Racial Bus Segregation

    Science.gov (United States)

    Kuby, Candace R.

    2013-01-01

    Drawing on theories of multi-modality and critical visual literacy, this article focuses on images that five-and six year-olds painted in a class-made book, Voice on the Bus, about racial segregation. The article discusses how children used illustrations to convey their understandings of Rosa Parks' bus arrest in Alabama. A post-structural view…

  1. Bus Rapid Transit (BRT System Impacts to Environmental Quality

    Directory of Open Access Journals (Sweden)

    Mojtaba Shojaei Baghini

    2014-02-01

    Full Text Available The aim of this research is to examine the mechanism and performance of Bus Rapid Transit (BRT system and its impacts on environment quality. Environment quality is an indicator of regional quality of life, supporting the health and well-being of the public and sustainability of the urban and natural environment. Transit agencies are adopting vehicles with alternative fuels, propulsion systems and pollutant emissions controls. One of the ways to improve the transportation environment is through the reduction of BRT emissions to improve air quality. The primary advantage of Bus Rapid Transit (BRT system is that it can be adapted to a multitude of operating environments, with sufficient scalability to deliver increased carrying capacity to meet future ridership growth. Moreover, the system will also likely reduce overall the noise levels by determining suitable noise management systems. The paper finds that a BRT system offers the greatest potential for greenhouse gas reductions primarily because BRT vehicles generally offer lower CO2 emissions per passenger mile than other transportation system.

  2. CERPEN FARUK “BUS KOTA” DALAM SEMIOTIK ROLAND BARTHES

    Directory of Open Access Journals (Sweden)

    Ken Widyatwati

    2016-04-01

    Full Text Available Literature called beautiful if it contains the mandate, message, ideas and meanings that are useful for the readers. Short story “Bus Kota” (City Bus containing the mandate, message, ideas and meanings that are useful to the reader. The mandate will be revealed by Roland Barthes' semiotic theory in the book S/Z. Literature has its own allure and text have accrued but not due to independence because of the difference in quality. Texts merge into a unity, or restore any text not as an individual but as a form of plurality. Literature as part of a social system is an expression of the author's sense of the outpouring of public life. Literary works can express themselves in the author's view the social and cultural changes in society because of the development of information technology and rapid. Technological developments and socio-cultural information can change in society so as to affect the psychology of the people. Society must have a thickness of faith not only for themselves, but to be able to maintain equanimity in the life of a pluralistic society

  3. Development of an integrated cryogenic bus for spacecraft applications

    Science.gov (United States)

    Bugby, David C.; Brennan, Patrick J.; Davis, Thomas M.; Tomlinson, Joe; Stoyanof, Marko; Crawford, Larry; Glaister, David S.

    1997-01-01

    To improve the efficiency and reduce the overdesign penalties associated with integrating cryogenic systems into spacecraft, the Integrated Cryogenic Bus (ICB) program was initiated in April 1996. The technical objectives of the program were to develop an integrated, lightweight means of thermally linking a cryogenic cooling source to a cooled satellite component, to commonize the interfaces to the cooling source and cooled component, and to commonize the integration of these systems into spacecraft. The technical plan involves several steps beginning with the definition of requirements, the identification and characterization of potential bus components, the development of new concepts and optimization methods, breadboard testing, and prototype development. Six months into the program, over 25 cryocooler, focal plane, and cryogenic hardware organizations have been interviewed or surveyed to identify requirements, numerous components have been identified and characterized, several preliminary concepts have been developed, an optimization plan has been outlined, and critical breadboard tests have begun. This paper summarizes the progress to date during Phase I of this Phillips Laboratory program funded by the Ballistic Missile Defense Organization (BMDO).

  4. Bus Implementation Using New Low Power PFSCL Tristate Buffers

    Directory of Open Access Journals (Sweden)

    Neeta Pandey

    2016-01-01

    Full Text Available This paper proposes new positive feedback source coupled logic (PFSCL tristate buffers suited to bus applications. The proposed buffers use switch to attain high impedance state and modify the load or the current source section. An interesting consequence of this is overall reduction in the power consumption. The proposed tristate buffers consume half the power compared to the available switch based counterpart. The issues with available PFSCL tristate buffers based bus implementation are identified and benefits of employing the proposed tristate buffer topologies are put forward. SPICE simulation results using TSMC 180 nm CMOS technology parameters are included to support the theoretical formulations. The performance of proposed tristate buffer topologies is examined on the basis of propagation delay, output enable time, and power consumption. It is found that one of the proposed tristate buffer topology outperforms the others in terms of all the performance parameters. An examination of behavior of available and the proposed PFSCL tristate buffer topologies under parameter variations and mismatch shows a maximum variation of 14%.

  5. Studying customer loyalty at Daewoo express bus service, Pakistan

    Directory of Open Access Journals (Sweden)

    Usman Yousaf

    2013-09-01

    Full Text Available Background: Meeting service quality standards and striving for loyalty are two critical areas which have until now been overlooked by both the passenger transport industry and academia in Pakistan therefore the study sheds useful light on an issue hitherto untouched. Therefore increased sample size will help in increasing generalizability of study. Methods: This paper is designed to study the level of loyalty at Daewoo Express Bus Service in Sargodha by measuring customer satisfaction. Researchers used a small sample of only 96 respondents (passengers and only studies customer's behavior in the service quality of Daewoo Express Bus Service however it may differ in other passenger transport services. Results and conclusions: This paper reveals that there is a positive and significant relationship between loyalty (dependant variable and price perceptions, reliability, retrieving and smoothing (independent variables. However, the study found that reliability of services is the most important dimension among other independent variables (price perceptions, smoothing, reliability, retrieving effecting customers loyalty at Daewoo Express. Paper under consideration would surely assist Daewoo`s management team to take care of the loopholes existing in the current service level and likely threats which Daewoo might face.

  6. Study on the optimum design of bus window pillar join40t; Bus window pillar ketsugo buzai no saiteki sekkei ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Tomioka, N. [Nihon University, Tokyo (Japan); Lim, S.; Kim, M.; Lee, H.; Kang, S.; Bae, D.

    1997-10-01

    Automobile body structure is generally assembled using various spot welded box sectional members. Especially, in the case of the bus, the shape of window pillar joint is assembled m T-type. This T-type member has some problem such as high stress concentration, low fatigue strength and structural rigidity. Therefore, in this report, performed a study on the optimum design of the bus window pillar joint for such problem by FEM analysis and experiments. 1 ref., 10 figs., 2 tabs.

  7. A Study of BUS Architecture Design for Controller of Nuclear Power Plant Using FPGA

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Dongil; Yun, Donghwa; Hwang, Sungjae; Kim, Myeongyun; Lee, Dongyun [PONUTech Co. Ltd., Seoul (Korea, Republic of)

    2014-05-15

    CPU (Central Processing Unit) operating speed and communication rate have been more technically improved than before. However, whole system is been a degradation of performance by electronic and structural limitation of parallel bus. Transmission quantity and speed have a limit and need arbiter in order to do arbitration because several boards shared parallel bus. Arbiter is a high complexity in implementing so it increases component per chip. If a parallel bus uses, it will occurs some problems what are reflection noise, power/ground noise (or ground bounce) as SSN (Simultaneous Switching Noise) and crosstalk noise like magnetic coupling. In this paper, in order to solve a problem of parallel bus in controller of NPP (Nuclear Power Plant), proposes the bus architecture design using FPGA (Field Programmable Gate Array) based on LVDS (Low Voltage Differential Signaling)

  8. SunLine Transit Agency Advanced Technology Fuel Cell Bus Evaluation: Second Results Report and Appendices

    Energy Technology Data Exchange (ETDEWEB)

    Eudy, L.; Chandler, K.

    2011-10-01

    This report describes operations at SunLine Transit Agency for their newest prototype fuel cell bus and five compressed natural gas (CNG) buses. In May 2010, SunLine began operating its sixth-generation hydrogen fueled bus, an Advanced Technology (AT) fuel cell bus that incorporates the latest design improvements to reduce weight and increase reliability and performance. The agency is collaborating with the U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL) to evaluate the bus in revenue service. This is the second results report for the AT fuel cell bus since it was placed in service, and it focuses on the newest data analysis and lessons learned since the previous report. The appendices, referenced in the main report, provide the full background for the evaluation. They will be updated as new information is collected but will contain the original background material from the first report.

  9. Global conservation priorities for marine turtles.

    Directory of Open Access Journals (Sweden)

    Bryan P Wallace

    Full Text Available Where conservation resources are limited and conservation targets are diverse, robust yet flexible priority-setting frameworks are vital. Priority-setting is especially important for geographically widespread species with distinct populations subject to multiple threats that operate on different spatial and temporal scales. Marine turtles are widely distributed and exhibit intra-specific variations in population sizes and trends, as well as reproduction and morphology. However, current global extinction risk assessment frameworks do not assess conservation status of spatially and biologically distinct marine turtle Regional Management Units (RMUs, and thus do not capture variations in population trends, impacts of threats, or necessary conservation actions across individual populations. To address this issue, we developed a new assessment framework that allowed us to evaluate, compare and organize marine turtle RMUs according to status and threats criteria. Because conservation priorities can vary widely (i.e. from avoiding imminent extinction to maintaining long-term monitoring efforts we developed a "conservation priorities portfolio" system using categories of paired risk and threats scores for all RMUs (n = 58. We performed these assessments and rankings globally, by species, by ocean basin, and by recognized geopolitical bodies to identify patterns in risk, threats, and data gaps at different scales. This process resulted in characterization of risk and threats to all marine turtle RMUs, including identification of the world's 11 most endangered marine turtle RMUs based on highest risk and threats scores. This system also highlighted important gaps in available information that is crucial for accurate conservation assessments. Overall, this priority-setting framework can provide guidance for research and conservation priorities at multiple relevant scales, and should serve as a model for conservation status assessments and priority

  10. Global Conservation Priorities for Marine Turtles

    Science.gov (United States)

    Wallace, Bryan P.; DiMatteo, Andrew D.; Bolten, Alan B.; Chaloupka, Milani Y.; Hutchinson, Brian J.; Abreu-Grobois, F. Alberto; Mortimer, Jeanne A.; Seminoff, Jeffrey A.; Amorocho, Diego; Bjorndal, Karen A.; Bourjea, Jérôme; Bowen, Brian W.; Briseño Dueñas, Raquel; Casale, Paolo; Choudhury, B. C.; Costa, Alice; Dutton, Peter H.; Fallabrino, Alejandro; Finkbeiner, Elena M.; Girard, Alexandre; Girondot, Marc; Hamann, Mark; Hurley, Brendan J.; López-Mendilaharsu, Milagros; Marcovaldi, Maria Angela; Musick, John A.; Nel, Ronel; Pilcher, Nicolas J.; Troëng, Sebastian; Witherington, Blair; Mast, Roderic B.

    2011-01-01

    Where conservation resources are limited and conservation targets are diverse, robust yet flexible priority-setting frameworks are vital. Priority-setting is especially important for geographically widespread species with distinct populations subject to multiple threats that operate on different spatial and temporal scales. Marine turtles are widely distributed and exhibit intra-specific variations in population sizes and trends, as well as reproduction and morphology. However, current global extinction risk assessment frameworks do not assess conservation status of spatially and biologically distinct marine turtle Regional Management Units (RMUs), and thus do not capture variations in population trends, impacts of threats, or necessary conservation actions across individual populations. To address this issue, we developed a new assessment framework that allowed us to evaluate, compare and organize marine turtle RMUs according to status and threats criteria. Because conservation priorities can vary widely (i.e. from avoiding imminent extinction to maintaining long-term monitoring efforts) we developed a “conservation priorities portfolio” system using categories of paired risk and threats scores for all RMUs (n = 58). We performed these assessments and rankings globally, by species, by ocean basin, and by recognized geopolitical bodies to identify patterns in risk, threats, and data gaps at different scales. This process resulted in characterization of risk and threats to all marine turtle RMUs, including identification of the world's 11 most endangered marine turtle RMUs based on highest risk and threats scores. This system also highlighted important gaps in available information that is crucial for accurate conservation assessments. Overall, this priority-setting framework can provide guidance for research and conservation priorities at multiple relevant scales, and should serve as a model for conservation status assessments and priority-setting for

  11. Global conservation priorities for marine turtles.

    Science.gov (United States)

    Wallace, Bryan P; DiMatteo, Andrew D; Bolten, Alan B; Chaloupka, Milani Y; Hutchinson, Brian J; Abreu-Grobois, F Alberto; Mortimer, Jeanne A; Seminoff, Jeffrey A; Amorocho, Diego; Bjorndal, Karen A; Bourjea, Jérôme; Bowen, Brian W; Briseño Dueñas, Raquel; Casale, Paolo; Choudhury, B C; Costa, Alice; Dutton, Peter H; Fallabrino, Alejandro; Finkbeiner, Elena M; Girard, Alexandre; Girondot, Marc; Hamann, Mark; Hurley, Brendan J; López-Mendilaharsu, Milagros; Marcovaldi, Maria Angela; Musick, John A; Nel, Ronel; Pilcher, Nicolas J; Troëng, Sebastian; Witherington, Blair; Mast, Roderic B

    2011-01-01

    Where conservation resources are limited and conservation targets are diverse, robust yet flexible priority-setting frameworks are vital. Priority-setting is especially important for geographically widespread species with distinct populations subject to multiple threats that operate on different spatial and temporal scales. Marine turtles are widely distributed and exhibit intra-specific variations in population sizes and trends, as well as reproduction and morphology. However, current global extinction risk assessment frameworks do not assess conservation status of spatially and biologically distinct marine turtle Regional Management Units (RMUs), and thus do not capture variations in population trends, impacts of threats, or necessary conservation actions across individual populations. To address this issue, we developed a new assessment framework that allowed us to evaluate, compare and organize marine turtle RMUs according to status and threats criteria. Because conservation priorities can vary widely (i.e. from avoiding imminent extinction to maintaining long-term monitoring efforts) we developed a "conservation priorities portfolio" system using categories of paired risk and threats scores for all RMUs (n = 58). We performed these assessments and rankings globally, by species, by ocean basin, and by recognized geopolitical bodies to identify patterns in risk, threats, and data gaps at different scales. This process resulted in characterization of risk and threats to all marine turtle RMUs, including identification of the world's 11 most endangered marine turtle RMUs based on highest risk and threats scores. This system also highlighted important gaps in available information that is crucial for accurate conservation assessments. Overall, this priority-setting framework can provide guidance for research and conservation priorities at multiple relevant scales, and should serve as a model for conservation status assessments and priority-setting for

  12. PRIORITIES OF THE CONCEPT OF ENVIRONMENTAL SECURITY

    Directory of Open Access Journals (Sweden)

    Glushko O. A.

    2015-05-01

    Full Text Available The article examines the approaches to the legal definition of "priority" in the concept of environmental security, as well as the kinds of priorities the concept of ecological security. The given provisions give us the chance to formulate the concept of "priority of the concept of ecological safety" as a prime activity (situation of subjects of an administrative legal regime of ecological safety on ensuring normal functioning of ecological system of the country, i.e. all objects of live and inanimate nature, the developed ecological state and the happening changes of an ecological state. We have highlighted the problem of the legal regulation of the concept of environmental security. The extensive studied system of political and legal program acts allows considering all the variety of approaches to the problem of priorities of the Russian concept of ensuring ecological safety. The system of priorities of the concept of ensuring ecological safety given in article most fully reflects prime activities of subjects of an administrative legal regime of ensuring ecological safety

  13. Sludge management paradigms: impact of priority substances and priority hazardous substances

    DEFF Research Database (Denmark)

    Eriksson, Eva; Lundy, L.; Donner, E.;

    2011-01-01

    metals in sludge applied to agricultural land, the potential impact of many EU Water Framework Directive priority and priority hazardous substances (PS/PHS) on human or environmental health has yet to be fully addressed. Research presented here shows that treated sludge from five urban WWTPs experiencing...

  14. Design of Modified HRRN Scheduling Algorithm for priority systems Using Hybrid Priority scheme

    Directory of Open Access Journals (Sweden)

    P. Surendra Varma

    2013-01-01

    Full Text Available The basic aim of this paper is to design a scheduling algorithm which is suitable for priority systems and it should not suffer with starvation or indefinite postponement. Highest Response Ratio Next (HRRN scheduling is a non-preemptive discipline, in which the priority of each job is dependent on its estimated run time, and also the amount of time it has spent waiting. Jobs gain higher priority the longer they wait, which prevents indefinite postponement (process starvation. In fact, the jobs that have spent a long time waiting compete against those estimated to have short run times. HRRN prevents indefinite postponements but does not suitable for priority systems. So, modifying HRRN in such a way that it will be suitable for priority based systems.

  15. Six common mistakes in conservation priority setting.

    Science.gov (United States)

    Game, Edward T; Kareiva, Peter; Possingham, Hugh P

    2013-06-01

    A vast number of prioritization schemes have been developed to help conservation navigate tough decisions about the allocation of finite resources. However, the application of quantitative approaches to setting priorities in conservation frequently includes mistakes that can undermine their authors' intention to be more rigorous and scientific in the way priorities are established and resources allocated. Drawing on well-established principles of decision science, we highlight 6 mistakes commonly associated with setting priorities for conservation: not acknowledging conservation plans are prioritizations; trying to solve an ill-defined problem; not prioritizing actions; arbitrariness; hidden value judgments; and not acknowledging risk of failure. We explain these mistakes and offer a path to help conservation planners avoid making the same mistakes in future prioritizations.

  16. Priority probability deceleration deadline-aware TCP

    Institute of Scientific and Technical Information of China (English)

    Jin Ye; Jing Lin; Jiawei Huang

    2015-01-01

    In modern data centers, because of the deadline-agnostic congestion control in transmission control protocol (TCP), many deadline-sensitive flows can not finish before their deadlines. Therefore, providing a higher deadline meeting ratio becomes a critical chal enge in the typical online data intensive (OLDI) ap-plications of data center networks (DCNs). However, a problem named as priority synchronization is found in this paper, which de-creases the deadline meeting ratio badly. To solve this problem, we propose a priority probability deceleration (P2D) deadline-aware TCP. By using the novel probabilistic deceleration, P2D prevents the priority synchronization problem. Simulation results show that P2 D increases the deadline meeting ratio by 20%compared with D2TCP.

  17. Priority of discovery in the life sciences.

    Science.gov (United States)

    Vale, Ronald D; Hyman, Anthony A

    2016-01-01

    The job of a scientist is to make a discovery and then communicate this new knowledge to others. For a scientist to be successful, he or she needs to be able to claim credit or priority for discoveries throughout their career. However, despite being fundamental to the reward system of science, the principles for establishing the "priority of discovery" are rarely discussed. Here we break down priority into two steps: disclosure, in which the discovery is released to the world-wide community; and validation, in which other scientists assess the accuracy, quality and importance of the work. Currently, in biology, disclosure and an initial validation are combined in a journal publication. Here, we discuss the advantages of separating these steps into disclosure via a preprint, and validation via a combination of peer review at a journal and additional evaluation by the wider scientific community. PMID:27310529

  18. Computerized management of time, tasks, and priorities

    Energy Technology Data Exchange (ETDEWEB)

    Miller, P.E. (ed.)

    1988-01-01

    Even before Egyptian times, fiber and paper-based methods were used to manage time, tasks, and priorities. Papyrus and paper were effective in their time, but now is the time for the even more effective computer-based methods of time management. This study compares paper and computer methods of the management of time, tasks, and priorities. Discussed are recommended strengths of off-the-shelf software for time management. Integrated software is recommended. A case study of the use of idea processing software to manage publication tasks and priorities is examined. Illustrated--for classroom-style training--are uses of a computer to enhance the quality and increase the efficiency of the coordination of publications from conception and research to printing and issuance. 3 refs., 43 figs.

  19. Wind farm protection using an IEC 61850 process bus architecture

    Energy Technology Data Exchange (ETDEWEB)

    McGinn, D. [GE Digital Energy, Toronto, ON (Canada)

    2009-07-01

    This presentation discussed wind farm protection using an IEC 61850 process bus architecture. Data is transmitted via IEC 61850 messages over a fiber optic communications network to a central relaying unit (CRU) that executes protection and control (P and C) functions for a whole wind farm. The presentation also discussed the need to further simplify P and C design. Challenges of wind farm protection include physical distance; relay location; and selectivity/isolation. P and C hardware evolution was illustrated and its advantages were presented. These included one relay to set, configure, test, and maintain; eliminate the need for transfer trips; free monitoring; free disturbance recording; and easy integration of data. The development of commercially available systems began around 1990 with the IPACS system developed by Hydro One, and the SIPSUR system developed in Spain. 7 figs.

  20. Design and Analysis of Bus Front Panel Usin G FRP

    Directory of Open Access Journals (Sweden)

    G. Adinarayana

    2014-10-01

    Full Text Available Recently, Advance composite materials have taken the significant share with other engineering materials due to its mechanical properties and high strength to weight ratio. Advance composite like E-glass, S-glass, Carbon fiber, Kevlar are not yet confined at the aerospace industry but gradually these are taking over the position of other industries as well. Because of its attaining high intricacy in designing factors and as well as cheaper mould design and also less cost in production of few numbers. The applications of FRPs are spirally increasing. The aim of this project is to develop a BUS FRONT PANEL with a help of FRPs in order to sustain all the mechanical properties which are equivalent to the metals with the help of advanced computer aided software designs like ANSYS. In computer aided engineering to make the product proven in the realistic market.

  1. FAKTOR PENYEBAB KERUSAKAN SISTEM MESIN PADA BUS APTB PPD

    Directory of Open Access Journals (Sweden)

    Laela Chairani

    2015-06-01

    Full Text Available Comfort and safety of public transportation, particularly APTB PPD buses, becomes high expectations for its customers. Those expectations must be supported by the application of a good engine maintenance system. By using the method of Reliability Centered Maintenance may be determined appropriate actions to mitigate damage. From the analysis known the failures of the APTB PPD bus are malfunctions of the fuel engine, power transfer systems, difficulty to move the gear lever, and lubricating system for the rough engine noise. The cause of engine malfunction is dirty diesel filter, vehicle acceleration malfunction is due to the clutch plate wear out. Difficulty to move the gear lever indicates that the clutch slips. Rough engine noise caused by the flow of oil to the engine stalled as the result of dirty oil filter. The results of the logic tree analysis show that for each failure requires scheduling of time directed task.

  2. Characterisation of vibration input to flywheel used on urban bus

    Science.gov (United States)

    Wang, L.; Kanarachos, S.; Christensen, J.

    2016-09-01

    Vibration induced from road surface has an impact on the durability and reliability of electrical and mechanical components attached on the vehicle. There is little research published relevant to the durability assessment of a flywheel energy recovery system installed on city and district buses. Relevant international standards and legislations were reviewed and large discrepancy was found among them, in addition, there are no standards exclusively developed for kinetic energy recovery systems on vehicles. This paper describes the experimentation of assessment of road surface vibration input to the flywheel on a bus as obtained at the MIRA Proving Ground. Power density spectra have been developed based on the raw data obtained during the experimentation. Validation of this model will be carried out using accelerated life time tests that will be carried out on a shaker rig using an accumulated profile based on the theory of fatigue damage equivalence in time and frequency domain aligned with the model predictions.

  3. Scientists’ perspectives on global ocean research priorities

    Directory of Open Access Journals (Sweden)

    Murray Alan Rudd

    2014-08-01

    Full Text Available Diverse natural and social science research is needed to support policies to recover and sustain healthy oceans. While a wide variety of expert-led prioritization initiatives have identified research themes and priorities at national and regional scale, over the past several years there has also been a surge in the number of scanning exercises that have identified important environmental research questions and issues ‘from the bottom-up’. From those questions, winnowed from thousands of contributions by scientists and policy-makers around the world who participated in terrestrial, aquatic and domain-specific horizon scanning and big question exercises, I identified 657 research questions potentially important for informing decisions regarding ocean governance and sustainability. These were distilled to a short list of 67 distinctive research questions that, in an internet survey, were ranked by 2179 scientists from 94 countries. Five of the top 10 research priorities were shared by respondents globally. Despite significant differences between physical and ecological scientists’ priorities regarding specific research questions, they shared seven common priorities among their top 10. Social scientists’ priorities were, however, much different, highlighting their research focus on managerial solutions to ocean challenges and questions regarding the role of human behavior and values in attaining ocean sustainability. The results from this survey provide a comprehensive and timely assessment of current ocean research priorities among research-active scientists but highlight potential challenges in stimulating crossdisciplinary research. As ocean and coastal research necessarily becomes more transdisciplinary to address complex ocean challenges, it will be critical for scientists and research funders to understand how scientists from different disciplines and regions might collaborate and strengthen the overall evidence base for ocean

  4. DESIGN OF TRANSITION TIME ADJUSTMENT TECHNIQUE FOR REDUCING BUS DELAY EFFECTS ON NOC INTERCONNECTS

    Directory of Open Access Journals (Sweden)

    MEERA K S

    2013-04-01

    Full Text Available To meet the growing computation-intensive applications the number of computing resources in single-chip has enormously increased, because current VLSI technology can support such an extensive integration of transistors. By adding many computing resources such as CPU, DSP, specific IPs, etc to build a system in System-on-Chip, its interconnection between each other becomes another challenging issue. In most System-on-Chip applications, a shared bus interconnection which needs arbitration logic to serialize several bus access requests, is adopted to communicate with each integrated processing unit because of its low-cost and simple control characteristics. However, such shared bus interconnection has some limitation in its scalability because only one master at a time can utilize the bus which means all the bus accesses should be serialized by the arbitrator. Therefore, in such an environment where the number of bus requesters is large and their required bandwidth for interconnection is more than the current bus, some other interconnection methods should be considered. Such scalable bandwidth requirement can be satisfied by using on-chip packet-switched micro-network of interconnects, generally known as Network-on-Chip (NoC architecture. It suffers however from increasingly serious interconnect crosstalk effects, which constrain the overall performance of NOC systems. In this paper some delay tolerance methods are proposed.

  5. Implementation of an AMBA Advanced High Performance Bus protocol IP block

    Directory of Open Access Journals (Sweden)

    Mahendra Vucha Sandeep Magarde

    2011-08-01

    Full Text Available The design of an AMBA advanced high performance bus (AHB protocol IP block is presented in this paper. The AHB (Advanced High-performance Bus is a high-performance bus in AMBA (Advanced Microcontroller Bus Architecture family. This AHB can be used in high clock frequency system modules. The AHB acts as the high-performance system backbone bus. AHB supports the efficient connection of processors, on-chip memories and off-chip external memory interfaces with low-power peripheral macro cell functions. In this work, the design of the Advanced High-Performance Bus Protocol is developed which has the basic blocks such as Master and Slave. The arbitration mechanism is used to ensure that only one master has access to the bus at any one time and the AHB decoder is used to decode the address of each transfer and provide a select signal for the slave that is involved in the transfer. This AMBA-AHB protocol can be adopted in all the application provided the design should be an AHB compliant.

  6. COMPARISON OF PARALLEL AND SERIES HYBRID POWERTRAINS FOR TRANSIT BUS APPLICATION

    Energy Technology Data Exchange (ETDEWEB)

    Gao, Zhiming [ORNL; Daw, C Stuart [ORNL; Smith, David E [ORNL; Jones, Perry T [ORNL; LaClair, Tim J [ORNL; Parks, II, James E [ORNL

    2016-01-01

    The fuel economy and emissions of both conventional and hybrid buses equipped with emissions aftertreatment were evaluated via computational simulation for six representative city bus drive cycles. Both series and parallel configurations for the hybrid case were studied. The simulation results indicate that series hybrid buses have the greatest overall advantage in fuel economy. The series and parallel hybrid buses were predicted to produce similar CO and HC tailpipe emissions but were also predicted to have reduced NOx tailpipe emissions compared to the conventional bus in higher speed cycles. For the New York bus cycle (NYBC), which has the lowest average speed among the cycles evaluated, the series bus tailpipe emissions were somewhat higher than they were for the conventional bus, while the parallel hybrid bus had significantly lower tailpipe emissions. All three bus powertrains were found to require periodic active DPF regeneration to maintain PM control. Plug-in operation of series hybrid buses appears to offer significant fuel economy benefits and is easily employed due to the relatively large battery capacity that is typical of the series hybrid configuration.

  7. Air flow through a non-airconditioned bus with open windows

    Indian Academy of Sciences (India)

    S R Kale; S V Veeravalli; H D Punekar; M M Yelmule

    2007-08-01

    Open window buses without air-conditioning are a major mode of urban and inter-city transport in most countries. High occupancy combined with hot and humid conditions makes travel in these buses quite uncomfortable. In this study air flow through a bus has been studied that could be the basis for low cost and ecofriendly methods of increasing passenger comfort and possibly reduce drag. The aerodynamics of such a road vehicle has not been studied as previous investigations have been confined to vehicles with closed windows that present a smooth exterior to air flow. Using a 1:25 scaled Perspex model of an urban bus in Delhi, flow visualization was performed in a water channel. The Reynolds numbers were onetenth of a real bus moving at $10 m/s$. Smoke and tuft visualizations were also performed on an urban bus at 40 km/h. Numerical simulations were performed at the actual Reynolds number. Even though there were Reynolds number differences, the broad features were similar. Air enters the bus from the rear windows, moves to the front (relative to the bus) and exits from the front windows. Inside air velocity relative to the bus is about one-tenth of the free-stream velocity. The flow is highly three-dimensional and unsteady.

  8. Autonomous Navigation and Obstacle Avoidance of a Micro-bus

    Directory of Open Access Journals (Sweden)

    Carlos Fernández

    2013-04-01

    Full Text Available At present, the topic of automated vehicles is one of the most promising research areas in the field of Intelligent Transportation Systems (ITS. The use of automated vehicles for public transportation also contributes to reductions in congestion levels and to improvements in traffic flow. Moreover, electrical public autonomous vehicles are environmentally friendly, provide better air quality and contribute to energy conservation. The driverless public transportation systems, which are at present operating in some airports and train stations, are restricted to dedicated roads and exhibit serious trouble dynamically avoiding obstacles in the trajectory. In this paper, an electric autonomous mini-bus is presented. All datasets used in this article were collected during the experiments carried out in the demonstration event of the 2012 IEEE Intelligent Vehicles Symposium that took place in Alcalá de Henares (Spain. The demonstration consisted of a route 725 metres long containing a list of latitude-longitude points (waypoints. The mini-bus was capable of driving autonomously from one waypoint to another using a GPS sensor. Furthermore, the vehicle is provided with a multi-beam Laser Imaging Detection and Ranging (LIDAR sensor for surrounding reconstruction and obstacle detection. When an obstacle is detected in the planned path, the planned route is modified in order to avoid the obstacle and continue its way to the end of the mission. On the demonstration day, a total of 196 attendees had the opportunity to get a ride on the vehicles. A total of 28 laps were successfully completed in full autonomous mode in a private circuit located in the National Institute for Aerospace Research (INTA, Spain. In other words, the system completed 20.3 km of driverless navigation and obstacle avoidance.

  9. Entangling a Series of Trapped Ions by Moving Cavity Bus

    Institute of Scientific and Technical Information of China (English)

    ZHANG Miao; JIA Huan-Yu; WEI Lian-Fu

    2011-01-01

    Entangling multiple qubits is one of the central tasks of quantum information processing. We propose an approach to entangle a number of cold ions (individually trapped in a string of microtraps) by a moved cavity. The cavity is pushed to include the ions one by one with a uniform velocity and thus the information stored in former ions could be transferred to the latter ones by such a moving cavity bus. Since the positions of the trapped ions are precisely located, the strengths and durations of the ion-cavity interactions can be exactly controlled. As a consequence, by properly setting the relevant parameters, typical multi-ion entangled states, e.g., W state for 10 ions, could be deterministically generated. The feasibility of the proposal is also discussed.%@@ Entangling multiple qubits is one of the central tasks of quantum information processing.We propose an approach to entangle a number of cold ions (individually trapped in a string of microtraps) by a moved cavity.The cavity is pushed to include the ions one by one with a uniform velocity and thus the information stored in former ions could be transferred to the latter ones by such a moving cavity bus.Since the positions of the trapped ions are precisely located, the strengths and durations of the ion-cavity interactions can be exactly controlled.As a consequence, by properly setting the relevant parameters, typical multi-ion entangled states, e.g., W state for 10 ions, could be deterministically generated.The feasibility of the proposal is also discussed.

  10. Priority Union and Generalization in Discourse Grammars

    CERN Document Server

    Grover, C; Manandhar, S; Moens, M; Grover, Claire; Brew, Chris; Manandhar, Suresh; Moens, Marc

    1994-01-01

    We describe an implementation in Carpenter's typed feature formalism, ALE, of a discourse grammar of the kind proposed by Scha, Polanyi, et al. We examine their method for resolving parallelism-dependent anaphora and show that there is a coherent feature-structural rendition of this type of grammar which uses the operations of priority union and generalization. We describe an augmentation of the ALE system to encompass these operations and we show that an appropriate choice of definition for priority union gives the desired multiple output for examples of VP-ellipsis which exhibit a strict/sloppy ambiguity.

  11. On the road : non-fossil fuel deployment for the public bus fleet of Sweden

    OpenAIRE

    Xylia, Maria; Silveira, Semida

    2015-01-01

    The public transport sector in Sweden has set a target to run 90% of its total vehicle-kilometers on renewable fuels by 2020, and double its market share in the long term. The focus of this paper is the adoption of renewable fuels in public bus fleets. Data for all 21 Swedish counties were gathered and analyzed, mapping the bus fleets’ condition in relation to renewable fuel deployment, CO2 emissions and energy efficiency. The main factors affecting fuel choices in the bus fleets were investi...

  12. Connecticut Transit (CTTRANSIT) Fuel Cell Transit Bus: Third Evaluation Report and Appendices

    Energy Technology Data Exchange (ETDEWEB)

    Chandler, K.; Eudy, L.

    2010-01-01

    This report describes operations at Connecticut Transit (CTTRANSIT) in Hartford for one prototype fuel cell bus and three new diesel buses operating from the same location. The prototype fuel cell bus was manufactured by Van Hool and ISE Corp. and features an electric hybrid drive system with a UTC Power PureMotion 120 Fuel Cell Power System and ZEBRA batteries for energy storage. The fuel cell bus started operation in April 2007, and evaluation results through October 2009 are provided in this report.

  13. Design of the HEAO main bus shunt regulator. [High Energy Astronomical Observatory solar array

    Science.gov (United States)

    Middlebrook, R. D.; Kimble, S. G.

    1976-01-01

    The High Energy Astronomy Observatory (HEAO) is being built for NASA by an American company. The general requirements concerning the HEAO main bus regulator are examined. The bus regulated voltage is 33 V, the maximum shunt current is 45 A, and the regulator output impedance is to be less than 0.5 Ohm from dc to 100 kHz. Loop gain design considerations for the main bus regulator are discussed and a description is given of the general device configuration. Attention is also given to regulator loop design and performance.

  14. A Communication-Less Distributed Voltage Control Strategy for a Multi-Bus AC Islanded Microgrid

    DEFF Research Database (Denmark)

    Wang, Yanbo; Tan, Yongdong; Chen, Zhe;

    2014-01-01

    This paper presents a communication-less distributed voltage control strategy for a multi-bus AC islanded microgrid. First, a Kalman Filter-based network voltage estimator is proposed to obtain voltage responses without communication links in the presence of load disturbances. Then, a voltage...... (Distributed Generator) unit rather than relying on any communication facilities; (2) In contrast to the conventional PI-based voltage control method, the proposed voltage control strategy can implement not only offset-free control for single-bus, but also optimal control for multi-bus. Thus the flexibility...

  15. A Rule-Based Energy Management Strategy for a Plug-in Hybrid School Bus Based on a Controller Area Network Bus

    Directory of Open Access Journals (Sweden)

    Jiankun Peng

    2015-06-01

    Full Text Available This paper presents a rule-based energy management strategy for a plug-in hybrid school bus (PHSB. In order to verify the effectiveness and rationality of the proposed energy management strategy, the powertrain and control models were built with MATLAB/Simulink. The PHSB powertrain model includes an engine model, ISG (integrated started and generator model, drive motor model, power battery packs model, driver model, and vehicle longitudinal dynamics model. To evaluate the controller area network (CAN bus performance features such as the bus load, signal hysteresis, and to verify the reliability and real-time performance of the CAN bus multi-node control method, a co-simulation platform was built with CANoe and MATLAB/Simulink. The co-simulation results show that the control strategy can meet the requirements of the PHSB’s dynamic performance. Meanwhile, the charge-depleting mode (CD and charge-sustaining mode (CS can switch between each other and maintain a state-of-charge (SoC of around 30%, indicating that the energy management strategy effectively extends the working period of the CD mode and improves the fuel economy further. The energy consumption per 100 km includes 13.7 L diesel and 10.5 kW·h electricity with an initial SoC of 75%. The CANoe simulation results show that the bus communication performs well without error frames.

  16. 78 FR 29785 - Priority Mail Pricing

    Science.gov (United States)

    2013-05-21

    ... From the Federal Register Online via the Government Publishing Office POSTAL REGULATORY COMMISSION Priority Mail Pricing AGENCY: Postal Regulatory Commission. ACTION: Notice. SUMMARY: The Commission is....452 percent. Id. at 5. The Postal Service indicates that after the price change, the unused...

  17. U.S. Foreign Policy Priorities.

    Science.gov (United States)

    Pell, Claiborne

    1983-01-01

    The three highest priorities for American foreign policy are avoiding nuclear war by working with the Soviet leadership to alter our present collision course, demonstrating our commitment to human rights throughout the world, and ensuring American economic prosperity by strengthening exports and ensuring the stability of the international monetary…

  18. 10 CFR 580.03 - Curtailment priorities.

    Science.gov (United States)

    2010-01-01

    ... ESSENTIAL AGRICULTURAL USES § 580.03 Curtailment priorities. (a) Notwithstanding any provision of law other... curtailment of deliveries of natural gas for any essential agricultural use, unless: (1) Such curtailment does... practicable and that the fuel is reasonably available as an alternative for such essential agricultural...

  19. 25 CFR 286.8 - Priority criteria.

    Science.gov (United States)

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false Priority criteria. 286.8 Section 286.8 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR ECONOMIC ENTERPRISES INDIAN BUSINESS DEVELOPMENT PROGRAM § 286... that will: (1) Utilize Indian resources, both natural and human. (2) Create the highest ratio of...

  20. Priority environmental investment programme: Development and implementation

    Directory of Open Access Journals (Sweden)

    Njegovan Zoran M.

    2004-01-01

    Full Text Available This paper is created to serve as a methodological base and possible work plan for Assistance in Priority Environmental Investment Programme Development and Implementation in the Republic of Serbia. It will contribute to improved mechanisms for selection of priority environmental investments. Also, the paper should outline a scope of work for technical assistance for Republic of Serbia in developing mechanisms for identifying and selecting priority environmental investments. The main feature of the long-term environmental policy in the Republic of Serbia is absence of integrated approach, which goes hand by hand with the international environmental standards, and lack of efficient economic instruments and regulations. It causes an inadequate technology policy and location of the polluters. Besides that there has been a lack of appropriate environmental monitoring system good enough to provide efficient ex-ante and ex-post protection. It has caused a lot of environmental damages so that a completely new approach in the field of environment is expected to be created out of which the Priority Environmental Investment Programme (PEIP should be a main tool for experience of good environmental governance in the Republic of Serbia as well as in the region of SEE.

  1. Packet models revisited: tandem and priority systems

    NARCIS (Netherlands)

    Mandjes, M.R.H.

    2004-01-01

    We examine two extensions of traditional single-node packet-scale queueing models: tandem networks and (strict) priority systems. Two generic input processes are considered: periodic and Poisson arrivals. For the two-node tandem, an exact expression is derived for the joint distribution of the total

  2. Packet models revisited: tandem and priority systems

    NARCIS (Netherlands)

    M.R.H. Mandjes

    2004-01-01

    Abstract : We examine two extensions of traditional single-node packet-scale queueing models: tandem networks and (strict) priority systems. Two generic input processes are considered: periodic and Poisson arrivals. For the two-node tandem, an exact expression is derived for the joint distribution o

  3. Public Opinion Poll on Community Priorities: Sacramento

    Science.gov (United States)

    Sierra Health Foundation, 2009

    2009-01-01

    The primary goal of this study was to measure public perceptions, opinions and priorities as they pertain to youth issues in Sacramento for the purposes of further developing public and private youth programming and public policy in the Sacramento region. By presenting a "statistically reliable" profile of public opinion on youth issues, the…

  4. Priorities in the allocation of scarce resources.

    OpenAIRE

    Boyd, K M; Potter, B T

    1986-01-01

    The authors report and comment on student reactions to a clinical example of moral choice in the microallocation of scarce resources. Four patients require dialysis simultaneously, but only one kidney machine is available. What moral, as opposed to clinical, criteria are available to determine who should have priority?

  5. 48 CFR 8.603 - Purchase priorities.

    Science.gov (United States)

    2010-10-01

    ... 48 Federal Acquisition Regulations System 1 2010-10-01 2010-10-01 false Purchase priorities. 8.603 Section 8.603 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION ACQUISITION PLANNING REQUIRED SOURCES OF SUPPLIES AND SERVICES Acquisition From Federal Prison Industries, Inc. 8.603...

  6. 48 CFR 8.704 - Purchase priorities.

    Science.gov (United States)

    2010-10-01

    ... 48 Federal Acquisition Regulations System 1 2010-10-01 2010-10-01 false Purchase priorities. 8.704 Section 8.704 Federal Acquisition Regulations System FEDERAL ACQUISITION REGULATION ACQUISITION PLANNING... Prison Industries, Inc., ordering offices shall purchase supplies and services in the...

  7. 48 CFR 808.603 - Purchase priorities.

    Science.gov (United States)

    2010-10-01

    ... 48 Federal Acquisition Regulations System 5 2010-10-01 2010-10-01 false Purchase priorities. 808.603 Section 808.603 Federal Acquisition Regulations System DEPARTMENT OF VETERANS AFFAIRS COMPETITION AND ACQUISITION PLANNING REQUIRED SOURCES OF SUPPLIES AND SERVICES Acquisition From Federal...

  8. Research Priority of Clinical Linguistics in Iran

    OpenAIRE

    Ahadi

    2016-01-01

    Background Study in clinical linguistics can reflect and requirements of this area, and can contribute to effective and useful changes in this area. Objectives Since there have been a few studies in the field of clinical linguistics in Iran, this research can pave the way to find research priorities of clinical linguistics in our country. Materials and Methods Studies related to l...

  9. Mitigation assessment results and priorities in China

    Energy Technology Data Exchange (ETDEWEB)

    Wu Zongxin; Wei Zhihong [Tsinghua Univ., Beijing (China)

    1996-12-31

    In this paper energy related CO2 emission projections of China by 2030 are given. CO2 mitigation potential and technology options in main fields of energy conservation and energy substitution are analyzed. CO2 reduction costs of main mitigation technologies are estimated and the AHP approach is used for helping assessment of priority technologies.

  10. Global priorities for marine biodiversity conservation.

    Science.gov (United States)

    Selig, Elizabeth R; Turner, Will R; Troëng, Sebastian; Wallace, Bryan P; Halpern, Benjamin S; Kaschner, Kristin; Lascelles, Ben G; Carpenter, Kent E; Mittermeier, Russell A

    2014-01-01

    In recent decades, many marine populations have experienced major declines in abundance, but we still know little about where management interventions may help protect the highest levels of marine biodiversity. We used modeled spatial distribution data for nearly 12,500 species to quantify global patterns of species richness and two measures of endemism. By combining these data with spatial information on cumulative human impacts, we identified priority areas where marine biodiversity is most and least impacted by human activities, both within Exclusive Economic Zones (EEZs) and Areas Beyond National Jurisdiction (ABNJ). Our analyses highlighted places that are both accepted priorities for marine conservation like the Coral Triangle, as well as less well-known locations in the southwest Indian Ocean, western Pacific Ocean, Arctic and Antarctic Oceans, and within semi-enclosed seas like the Mediterranean and Baltic Seas. Within highly impacted priority areas, climate and fishing were the biggest stressors. Although new priorities may arise as we continue to improve marine species range datasets, results from this work are an essential first step in guiding limited resources to regions where investment could best sustain marine biodiversity.

  11. Infant Mortality: Priority for Social Work.

    Science.gov (United States)

    Combs-Orme, Terri

    1987-01-01

    Bemoans the failure of the social work profession to claim infant mortality as a professional priority in spite of evidence of the appropriateness of social work interventions. Stresses social work's role in the reduction of preventable infant deaths. (Author/KS)

  12. Current Priorities of Soviet School Development.

    Science.gov (United States)

    Soviet Education, 1981

    1981-01-01

    Six articles discuss top priorities of Soviet education policy. Topics discussed include labor training, revision of the curriculum for the 10-year general education program, quantitative v qualitative demands on the educational system, and extended-day programs for the children of working mothers. (DB)

  13. Key Nuclear Verification Priorities - Safeguards and Beyond

    International Nuclear Information System (INIS)

    In addressing nuclear verification priorities, we should look beyond the current safeguards system. Non-proliferation, which the safeguards system underpins, is not an end in itself, but an essential condition for achieving and maintaining nuclear disarmament. Effective safeguards are essential for advancing disarmament, and safeguards issues, approaches and techniques are directly relevant to the development of future verification missions. The extent to which safeguards challenges are successfully addressed - or otherwise - will impact not only on confidence in the safeguards system, but on the effectiveness of, and confidence in, disarmament verification. To identify the key nuclear verification priorities, we need to consider the objectives of verification, and the challenges to achieving these. The strategic objective of IAEA safeguards might be expressed as: To support the global nuclear non-proliferation regime by: - Providing credible assurance that states are honouring their safeguards commitments - thereby removing a potential motivation to proliferate; and - Early detection of misuse of nuclear material and technology - thereby deterring proliferation by the risk of early detection, enabling timely intervention by the international community. Or to summarise - confidence-building, detection capability, and deterrence. These will also be essential objectives for future verification missions. The challenges to achieving these involve a mix of political, technical and institutional dimensions. Confidence is largely a political matter, reflecting the qualitative judgment of governments. Clearly assessments of detection capability and deterrence have a major impact on confidence. Detection capability is largely thought of as 'technical', but also involves issues of legal authority, as well as institutional issues. Deterrence has both political and institutional aspects - including judgments on risk of detection and risk of enforcement action being taken. The

  14. Final priority; Rehabilitation Services Administration--Assistive Technology Alternative Financing Program. Final priority.

    Science.gov (United States)

    2014-08-14

    The Assistant Secretary for Special Education and Rehabilitative Services announces a priority under the Assistive Technology Alternative Financing Program administered by the Rehabilitation Services Administration (RSA). The Assistant Secretary may use this priority for competitions in fiscal year (FY) 2014 and later years. This priority is designed to ensure that the Department funds high-quality assistive technology (AT) alternative financing programs (AFPs) that meet rigorous standards in order to enable individuals with disabilities to access and acquire assistive technology devices and services necessary to achieve education, community living, and employment goals.

  15. Identifying spatial priorities for protecting ecosystem services.

    Science.gov (United States)

    Luck, Gary W; Chan, Kai Ma; Klien, Carissa J

    2012-01-01

    Priorities for protecting ecosystem services must be identified to ensure future human well-being. Approaches to broad-scale spatial prioritization of ecosystem services are becoming increasingly popular and are a vital precursor to identifying locations where further detailed analyses of the management of ecosystem services is required (e.g., examining trade-offs among management actions). Prioritization approaches often examine the spatial congruence between priorities for protecting ecosystem services and priorities for protecting biodiversity; therefore, the spatial prioritization method used is crucial because it will influence the alignment of service protection and conservation goals. While spatial prioritization of ecosystem services and prioritization for conservation share similarities, such as the need to document threats and costs, the former differs substantially from the latter owing to the requirement to measure the following components: supply of services; availability of human-derived alternatives to service provision; capacity to meet beneficiary demand; and site dependency in and scale of service delivery. We review studies that identify broad-scale spatial priorities for managing ecosystem services and demonstrate that researchers have used different approaches and included various measures for identifying priorities, and most studies do not consider all of the components listed above. We describe a conceptual framework for integrating each of these components into spatial prioritization of ecosystem services and illustrate our approach using a worked example for water provision. A fuller characterization of the biophysical and social context for ecosystem services that we call for should improve future prioritization and the identification of locations where ecosystem-service management is especially important or cost effective. PMID:24555017

  16. Bus Stops, Published in 2008, 1:1200 (1in=100ft) scale, Brown County, WI.

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — This Bus Stops dataset, published at 1:1200 (1in=100ft) scale, was produced all or in part from Field Survey/GPS information as of 2008. Data by this publisher are...

  17. Research on urban public traffic network with multi-weights based on single bus transfer junction

    Science.gov (United States)

    An, Xin-lei; Zhang, Li; Zhang, Jian-gang

    2015-10-01

    Regarding single bus transfer junction as a research object, this paper constructs the urban traffic network models with multi-weights taking different bus lines in bus transfer junction as the network nodes, that is, the urban traffic network with multi-weights is given different properties weights at every edge. According to the method of network split, the complex network with multi-weights is split into several different single weighted complex networks. Then, we study the global synchronization of the new network model by changing congestion degrees, transfers coefficient and passenger flow density between different bus lines. Finally, analytical and simulated results are given to show the impact of different properties weights to the public traffic network balance.

  18. Survival analysis of car travel time near a bus stop in developing countries

    Institute of Scientific and Technical Information of China (English)

    YANG XiaoBao; GAO ZiYou; GUO HongWei; HUAN Mei

    2012-01-01

    This paper presents an important investigation into car travel time affected by mixed traffic flow near a bus stop on the basis of survival analysis theory.Travel time data associated with mixed traffic characteristics near a bus stop were collected by video cameras.A hazard-based duration model was introduced to analyze the effects of mixed traffic flow on car travel time.The results indicate that mixed traffic flow impacts car travel time significantly.And the presence of bus berthing violation would delay car travel time.The proposed model can be used to forecast temporal shifts in car travel time due to changes in mixed traffic flow.The influential factors related to mixed traffic flow should be given full consideration in the planning and designing of bus stops in developing countries.

  19. Analysis of Journey to Work Travel Behavior by Car and Bus in the Sydney Metropolitan Region

    Directory of Open Access Journals (Sweden)

    Suthanaya P.A.

    2011-01-01

    Full Text Available Car dependence is a fundamental problem in the sustainability of cities with low-density suburban sprawl. Increasing the use of public transport is one of the policy objectives commonly adopted to overcome this problem. It is essential to study journey to work travel behavior by car and bus. This paper applied preference function to analyze travel behavior and Moran’s I spatial statistic to evaluate the spatial association. The results indicated that the commuting preferences of residents have moved towards distance maximization. In general, bus was preferred for shorter distance trips whilst car was preferred for longer distance trips. Unlike car, by increasing distances from the Central Business District, residents tended to use bus for shorter distance trip. A significant positive spatial association was identified for both the slope preferences by car and bus where zones with a preference towards longer or shorter trips tended to travel to zones with similar preferences.

  20. USGS Small-scale Dataset - Railroad and Bus Passenger Stations of the United States 201207 Shapefile

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This map layer shows Amtrak intercity railroad and bus passenger terminals in the United States. There are no Amtrak stations in Alaska or Hawaii. The data are a...

  1. Bus Routes, Published in 2006, 1:100000 (1in=8333ft) scale, Atlanta Regional Commission.

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — This Bus Routes dataset, published at 1:100000 (1in=8333ft) scale, was produced all or in part from Other information as of 2006. Data by this publisher are often...

  2. Annoyance evaluation and the effect of noise on the health of bus drivers

    Directory of Open Access Journals (Sweden)

    Portela S Bruno

    2013-01-01

    Full Text Available In the present study, we evaluated annoyance and the effects of noise on the health of bus drivers. For that, 200 bus drivers from a public transport company participated in a cross-sectional study. Annoyance and effects on health was measured with analog scale: Sleep quality, occurrence of tinnitus, headache, irritation, and annoyance from bus engine, traffic, and passengers. Data of age and working time of bus drivers also were obtained. For noise exposure, LA eq was evaluated in 80 buses. Statistical analysis consisted of mean, standard deviation, minimum, and maximum, Kruskal-Wallis test with post-hoc Dunn, one-way ANOVA with post-hoc Tukey and Spearman′s correlation coefficient. Results indicate three groups of bus drivers (not annoyed: (N.A., a little annoyed (L.A. and highly annoyed (H.A.. The group H.A. was younger and with less working time in relation to others, with a significant difference only for age. Regarding sleep quality, there was no significant difference. For results on the occurrence of tinnitus, headache and irritation after work, group H.A. had significantly higher means. Result of annoyance to the bus engine was significantly higher in H.A. than in L.A. and N.A. Annoyance to traffic and passengers, no significant differences were found, but the highest results were found for L.A., followed by H.A. and N.A. Equivalent sound pressure level in buses was above of the limit for occupational comfort. It was concluded that bus drivers has considerable level of noise annoyance and some health effects are perceived. The noise is a factor discomfort ergonomic that may cause effects on health of bus drivers. This study aims to evaluate annoyance and the effects of noise on the health of bus drivers. Cross-sectional study with buses and bus drivers. For that, 200 bus drivers from a public transport company participated in a cross-sectional study. Annoyance and effects on health was measured with analog scale: Sleep quality

  3. Railroad and Bus Passenger Stations of the United States - Direct Download

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This map layer shows Amtrak intercity railroad and bus passenger terminals in the United States. There are no Amtrak stations in Alaska or Hawaii. The data are a...

  4. Microprocessor based dual bus structured data acquisition and processing system : DAPS-80

    International Nuclear Information System (INIS)

    The microprocessor based dual bus structured data acquisition and processing system has been designed around Intel 8080 microprocessor. The system is described and operational results are given. (M.G.B.)

  5. Exploring public bus service quality in South Africa: A structural equation modelling approach

    Directory of Open Access Journals (Sweden)

    Ayanda M. Vilakazi

    2014-03-01

    Full Text Available This study, which is a deviation from the usual practice of using SERVQUAL or an adaptedversion thereof, uses McKnight, Pagano and Paaswell’s (1986 service quality dimensions,namely reliability; extent of service; comfort; safety; and affordability (RECSA and structuralequation modelling to determine commuters’ perception of public bus service quality in amajor city in South Africa. The RECSA model was adapted and fitted to the data collectedfrom a convenience sample of bus commuters in Johannesburg, using structural equationmodelling. It was ascertained that reliability, service, comfort and safety influenced thepublic bus commuters’ perception of the overall service quality. The implications of theaforementioned findings for providers of public bus services are explained.

  6. Final priority; National Institute on Disability and Rehabilitation Research--Rehabilitation Engineering Research Centers. Final priority.

    Science.gov (United States)

    2014-07-01

    The Assistant Secretary for Special Education and Rehabilitative Services announces a priority under the Disability and Rehabilitation Research Projects and Centers Program administered by the National Institute on Disability and Rehabilitation Research (NIDRR). Specifically, we announce a priority for a Rehabilitation Engineering Research Center (RERC) on Improving the Accessibility, Usability, and Performance of Technology for Individuals who are Deaf or Hard of Hearing. The Assistant Secretary may use this priority for competitions in fiscal year (FY) 2014 and later years. We take this action to focus research attention on an area of national need. We intend the priority to contribute to improving the accessibility, usability, and performance of technology for individuals who are deaf or hard of hearing. PMID:25016623

  7. Final priority; National Institute on Disability and Rehabilitation Research--Rehabilitation Engineering Research Centers. Final priority.

    Science.gov (United States)

    2014-06-01

    The Assistant Secretary for Special Education and Rehabilitative Services announces a priority for the Disability and Rehabilitation Research Projects and Centers Program administered by the National Institute on Disability and Rehabilitation Research (NIDRR). Specifically, we announce a priority for a Rehabilitation Engineering Research Center (RERC) on Technologies to Enhance Independence in Daily Living for Adults with Cognitive Impairments. The Assistant Secretary may use this priority for competitions in fiscal year (FY) 2014 and later years. We take this action to focus research attention on an area of national need. We intend the priority to contribute to improved outcomes related to independence in daily activities in the home, community, or workplace setting for adults with cognitive impairments. PMID:24908686

  8. A perception system for accurate automatic control of an articulated bus

    OpenAIRE

    Salinas, Carlota; Montes, Héctor; Armada, Manuel

    2010-01-01

    This paper describes the perception system for an automatic articulated bus where an accurate tracking trajectory is desired. Among the most promising transport infrastructures of the autonomous or semi-autonomous transportation systems, the articulated bus is an interesting low cost and friendly option. This platform involves a mobile vehicle and a private circuit inside CSIC premises. The perception system, presented in this work, based on 2D laser scanner as a prime sensor generates local ...

  9. Using FTT-CAN to the Flexible Control of Bus Redundancy and Bandwidth Usage

    OpenAIRE

    Silva, Valter; Fonseca, José; Ferreira, Joaquim

    2006-01-01

    Controller Area Network (CAN) is a popular and very well-known bus system, both in academia and in industry, initially targeted to automotive applications as a single digital bus to replace the wiring that were growing complexity, weight and cost with the advent of new automotive appliances. However, requirements have evolved and CAN’s dependability and bandwidth limitations led to the emergence of alternative networks such as FlexRay and TTP/C. Nevertheless, we believe that it...

  10. The Ruggedized STD Bus Microcomputer - A low cost computer suitable for Space Shuttle experiments

    Science.gov (United States)

    Budney, T. J.; Stone, R. W.

    1982-01-01

    Previous space flight computers have been costly in terms of both hardware and software. The Ruggedized STD Bus Microcomputer is based on the commercial Mostek/Pro-Log STD Bus. Ruggedized PC cards can be based on commercial cards from more than 60 manufacturers, reducing hardware cost and design time. Software costs are minimized by using standard 8-bit microprocessors and by debugging code using commercial versions of the ruggedized flight boards while the flight hardware is being fabricated.

  11. Loss of power of a 220 VAC safety bus bar at Embalse NPP

    International Nuclear Information System (INIS)

    Embalse nuclear power plant is located at the Cordoba Province, 5 kilometres Southern the town of Embalse. It is equipped with one 600 MWe CANDU reactor. At the time of the event, which occurred on 11 October 2004, the plant was operating normally at full power. The Embalse nuclear power plant electrical power system buses are classified, in reliability decreasing order, into the following four different levels: 1) Class I: uninterrupted direct current supplies for safety related and other essential loads; 2) Class II: uninterrupted alternating current supplies for safety related and other essential loads; 3) Class III: alternating current supplies to essential auxiliaries which can tolerate the short interruption required until to start up and load the on-site standby generators and 4) Class IV: normal alternating current supplies to auxiliaries which can tolerate long duration interruptions without affecting personnel or equipment safety (Class IV is the normal source of power to Class III system). In particular, the Class II 220 VAC uninterrupted monophasic safety bus bars are composed by three 220 VAC subsystems powered by the following two sources of power: Class I uninterrupted safety bus bars (5551 BUA, BUB and BUC bars) and Class III secondary distribution 5433-MCC5 and MCC6. The Class II 220 VAC bus bars are normally powered from Class I bus bars through static monophasic inverters. Beside, in a static monophasic out of service case, Class II bus bar affected could be powered from Class III bus bars via a transformer stabilizer. Class II bus bars supplies power to both control computers and the AC instrumentation and control devices. When 220 VAC (Class II) 5542-BUC-monophasic-inverter failure was coincident with a subsequent independent failure to transfer to the Class III through static commuter 5542-SVR-C, a loss of the 220 VAC uninterrupted monophasic safety bus bar (Class II) event was caused. (author)

  12. Congestion Management by TCPST In IEEE 9 Bus System Using Matlab Simulink.

    OpenAIRE

    Amit Sharma; Ram Avtar Jaswal

    2013-01-01

    Increased electric power consumption causes transmission lines to be driven close to or even beyond their transfer capacities resulting in overloaded lines and congestions. Flexible AC Transmission Systems (FACTS) provide an opportunity to resolve congestions by controlling power flows and voltages. Main focus in this paper lies on the Thyristor Controlled Phase Shift Transformer (TCPST). IEEE 9 bus system is considered for congestion management. Parameters for bus system are predefined by IE...

  13. Central Thermal Bus for Micro and Small Satellites: Scalability and Adaptability

    OpenAIRE

    Wooldridge, John; Wrenn, Kim; Wolf, Dave; Bugby, Dave; Krein, Steve; Mark, Dan

    2005-01-01

    Swales Aerospace is engaged in the development of a Centralized Thermal Bus (CTB), which stands to significantly increase the capability, flexibility, and scalability of a small or micro-sat bus. The CTB is a multievaporator hybrid loop heat pipe (MEHLHP). It combines the best qualities of both capillary pumped loops and loop heat pipes while improving operational robustness, simplifying mission modes and system deployment/startup. Key benefits of the CTB are: multiple load heat transport, he...

  14. PERFORMANCE ASSESSMENT OF PRODUCT DEVELOPMENT PROCESS IN A BUS COMPANY: A CASE STUDY

    OpenAIRE

    Tiago Ribeiro de Araújo; Fernanda Cristina Pierre

    2014-01-01

    This article aims to examine the application of a method for assessing the performance of the product development process (PDP) through the assessment of managerial skills in a bus body industry. A case study was carried out and a PDP method was applied through a questionnaire addressing the PDP management skills according to Dechamps and Nayak (1997) model and validated by Silva (2001) in a bus body company which showed all the features available in the literature on industria...

  15. The impact of bus drivers ’ lifestyle on the occurrence of health problems and absenteeism

    Directory of Open Access Journals (Sweden)

    Andrej Jerman

    2016-06-01

    Full Text Available Research Question: Do bus drivers’ lifestyles affect the occurrence of health problems and absenteeism? Purpose: The purpose of the study was to determine whether the lifestyle of professional bus drivers affects the occurrence of health problems and the phenomenon of absenteeism. Method: A quantitative research method was used in the research. Data were collected using a structured questionnaire, on a sample of 230 professional bus drivers from different bus transport companies in Slovenia. Selected data were analyzed with chi-square test and multiple regression analysis. Results: We determined that there is a relationship between the state of health of professional bus drivers and participation in sport activity and that there is a statistically significant impact of lifestyle on the absenteeism of professional bus drivers. Organization: The study points to the necessity of management’s awareness to improve the conditions for the health status of employees and, consequently, absenteeism. Managers need to be more vigilant in ensuring conditions and social security that will allow employees a higher quality lifestyle. Society: The poor quality lifestyle of professional bus drivers, which includes different addictions, inadequate physical activity, and poor working conditions, is a significant factor causing absenteeism. All these factors influence the onset of negative consequences, such as the direct cost of compensation payments, costs of replacing the absent person, a reduction in productivity, which in turn affect economic growth and the high cost of health care. Originality: This is the first focus group study of professional bus drivers that targets lifestyle and its connection to absenteeism. Limitations/Future Research: The main limitation of the study is the number of respondents. The reason for this is that professional drivers are less responsive in the survey and that the study was conducted only in Slovenia, country of two

  16. Calculation of Flexible Bus-Bars Electrodynamic Stability with Application of Implicit Scheme

    OpenAIRE

    Y. G. Panamarenka

    2008-01-01

    A numerical method for calculation of open-air substations’ flexible bus-bars dynamic at short-circuit has been improved on equations of a flexible elastic string with application of an implicit scheme. On the basis of the numerical method a computer program FLEBUS for calculation of substations’ flexible bus-bars dynamic at short-circuit has been developed. An approbation and an estimation of calculation result reliability have been carried out in accordance with the program while using expe...

  17. The Metabolic Syndrome and its Association with Over Time Driving in Iranian Professional Bus Drivers

    OpenAIRE

    Afshin Blouri; Ali Saba; Amin Shirazi; Farnaz Nabizadeh; Maghsoud Matinkhah; Iraj Mohebbi

    2010-01-01

    The aim of the study was to determine the prevalence of metabolic syndrome (MeS) in professional bus drivers, and its association with overtime working hours among those drivers in Urmia, Iran. In this cross sectional study the studies population was 626 professional bus drivers, aged 20-69 yr. The MeS (according to the National Cholesterol Education Program Adult Treatment Panel III), Waist circumference, Systolic blood pressure, Diastolic blood pressure, Fasting plasma glucose, Triglyceride...

  18. Mechanical analysis of the main bus bars in the DFBA shuffling modules

    CERN Document Server

    Ramos, D

    2012-01-01

    The main bus bars (13 kA) inside the shuffling modules of the distribution feed boxes powering the LHC arcs (DFBA) are subjected to high Lorentz forces. The structural behaviour of the bus bars under such forces is here analysed. The results are discussed with respect to a risk of structural failure due to excessive deformation or degradation of the electrical insulation by repeated contact with other surfaces.

  19. External validation of psychological job demands in a bus driver sample

    OpenAIRE

    Gimeno, D; Benavides, F G; Mira, M.; Martinez, J. M.; Benach, J

    2004-01-01

    Psychosocial risk factors have been considered as characteristics of the work environment rather than an individual issue, but their presence in the workplace is usually measured by self-reported questionnaires, based on worker attitudes. The objective of the study was to compare a self-reported measure of psychological job demands in a bus driver sample with selected indicators of bus company activity, as external 'objective' indicators, in order to assess its external validity. The final sa...

  20. 基于CAN总线的电动客车空调控制方案%Air-conditioner Control Project for Electric Bus Based on CAN Bus

    Institute of Scientific and Technical Information of China (English)

    杨桥生

    2012-01-01

    The author simply introduces two kinds of present control modes for air-conditioner of electric bus in domestic market,puts forward a new kind of its control mode based on CAN bus,and design the CAN's messages reports.%简述国内电动客车空调的两种控制模式;提出一种基于CAN总线的电动客车空调控制模式,并设计CAN通讯报文。

  1. High priority tank sampling and analysis report

    Energy Technology Data Exchange (ETDEWEB)

    Brown, T.M.

    1998-03-05

    In July 1993, the Defense Nuclear Facilities Safety Board (DNFSB) transmitted Recommendation 93-5 (Conway 1993) to the US Department of Energy (DOE). Recommendation 93-5 noted that there was insufficient tank waste technical information and the pace to obtain it was too slow to ensure that Hanford Site wastes could be safely stored, that associated operations could be conducted safely, and that future disposal data requirements could be met. In May 1996, the DOE issued Revision 1 of the Recommendation 93-5 Implementation Plan (DOE-RL 1996). The Implementation Plan revision presented a modified approach to achieve the original plan`s objectives. The approach concentrated on actions necessary to ensure that wastes can be safely stored, that operations can be safely conducted, and that timely characterization information for the tank waste Disposal Program could be obtained. The Implementation Plan proposed 28 High Priority tanks, which, if sampled and analyzed, were expected to provide information to answer questions regarding safety and disposal issues. The High Priority tank list was originally developed in Section 9.0 of the Tank Waste Characterization Basis (Brown et al. 1995) by integrating the needs of the various safety and disposal programs. The High Priority tank list represents a set of tanks that were expected to provide the highest information return for characterization resources expended. The High Priority tanks were selected for near-term core sampling and were not expected to be the only tanks that would provide meaningful information. Sampling and analysis of non-High Priority tanks also could be used to provide scientific and technical data to confirm assumptions, calibrate models, and measure safety related phenomenological characteristics of the waste. When the sampling and analysis results of the High Priority and other tanks were reviewed, it was expected that a series of questions should be answered allowing key decisions to be made. The first

  2. High priority tank sampling and analysis report

    International Nuclear Information System (INIS)

    In July 1993, the Defense Nuclear Facilities Safety Board (DNFSB) transmitted Recommendation 93-5 (Conway 1993) to the US Department of Energy (DOE). Recommendation 93-5 noted that there was insufficient tank waste technical information and the pace to obtain it was too slow to ensure that Hanford Site wastes could be safely stored, that associated operations could be conducted safely, and that future disposal data requirements could be met. In May 1996, the DOE issued Revision 1 of the Recommendation 93-5 Implementation Plan (DOE-RL 1996). The Implementation Plan revision presented a modified approach to achieve the original plan's objectives. The approach concentrated on actions necessary to ensure that wastes can be safely stored, that operations can be safely conducted, and that timely characterization information for the tank waste Disposal Program could be obtained. The Implementation Plan proposed 28 High Priority tanks, which, if sampled and analyzed, were expected to provide information to answer questions regarding safety and disposal issues. The High Priority tank list was originally developed in Section 9.0 of the Tank Waste Characterization Basis (Brown et al. 1995) by integrating the needs of the various safety and disposal programs. The High Priority tank list represents a set of tanks that were expected to provide the highest information return for characterization resources expended. The High Priority tanks were selected for near-term core sampling and were not expected to be the only tanks that would provide meaningful information. Sampling and analysis of non-High Priority tanks also could be used to provide scientific and technical data to confirm assumptions, calibrate models, and measure safety related phenomenological characteristics of the waste. When the sampling and analysis results of the High Priority and other tanks were reviewed, it was expected that a series of questions should be answered allowing key decisions to be made. The first

  3. High priority tank sampling and analysis report

    International Nuclear Information System (INIS)

    In July 1993, the Defense Nuclear Facilities Board issued Recommendation 93-5 (Conway 1993) which noted that there was insufficient tank waste technical information and the pace to obtain it was too slow to ensure that Hanford Site wastes could be safely stored, that associated operations could be conducted safely, and that future disposal data requirements could be met. In response, the US Department of Energy, in May 1996, issued Revision 1 of the Recommendation 93-5 Implementation Plan (DOE-RL 1996). The Implementation Plan presented a modified approach to achieve the original plan's objectives, concentrating on actions necessary to ensure that wastes can be safely stored, that operations can be safely conducted, and that timely characterization information for the tank waste Disposal Program could be obtained. The Implementation Plan proposed 28 High Priority tanks for near term core sampling and analysis, which along with sampling and analysis of other non-High Priority tanks, could provide the scientific and technical data to confirm assumptions, calibrate models, and.measure safety related phenomenology of the waste. When the analysis results of the High Priority and other-tank sampling were reviewed, it was expected that a series of 12 questions, 9 related to safety issues and 3 related to planning for the disposal process, should be answered allowing key decisions to be made. This report discusses the execution of the Implementation Plan and the results achieved in addressing the questions. Through sampling and analysis, all nine safety related questions have been answered and extensive data for the three disposal planning related questions have been collected, allowing for key decision making. Many more tanks than the original 28 High Priority tanks identified in the Implementation Plan were sampled and analyzed. Twenty-one High Priority tanks and 85 other tanks were core sampled and used to address the questions. Thirty-eight additional tanks were auger

  4. ETHERBONE - a network layer for the wishbone SoC bus

    International Nuclear Information System (INIS)

    Today, there are several System on a Chip (SoC) bus systems. Typically, these buses are confined on-chip and rely on higher level components to communicate with the outside world. Taking these systems a step further, we see the possibility of extending the reach of the SoC bus to remote FPGAs or processors. This leads to the idea of the EtherBone (EB) core, which connects a Wishbone (WB) Ver. 4 Bus via a Gigabit Ethernet based network link to remote peripheral devices. EB acts as a transparent interconnect module towards attached WB Bus devices. Address information and data from one or more WB bus cycles is preceded with a descriptive header and encapsulated in a UDP/IP packet. Because of this standard compliance, EB is able to traverse Wide Area Networks and is therefore not bound to a geographic location. Due to the low level nature of the WB bus, EB provides a sound basis for remote hardware tools like a JTAG debugger, In-System-Programmer (ISP), boundary scan interface or logic analyser module. EB was developed in the scope of the White-Rabbit Timing Project (WR) at CERN and GSI/FAIR, which employs GigaBit Ethernet technology to communicate with memory mapped slave devices. WR will make use of EB as means to issue commands to its timing nodes and control connected accelerator hardware. (authors)

  5. An analytical algorithm to determine allowable ampacities of horizontally installed rectangular bus bars

    Directory of Open Access Journals (Sweden)

    Klimenta Dardan O.

    2016-01-01

    Full Text Available The main objective of this paper is to propose an algorithm for the determination of the allowable ampacities of single rectangular-section bus bars without the occurrence of correction factors. Without correction factors, the ampacity computation of the copper and aluminium bus bars is fully automatized. The analytical algorithm has been implemented in a computer program code that along with the allowable ampacity can compute the bus bar temperature and the individual heat transfer coefficient for each side of the bus bar, as well as their corresponding power losses. Natural and forced convection correlations for rectangular bus bars are applied. Effects of the solar radiation and radiation heat losses from the bus bar surface are taken into consideration as well. The finite element method (FEM has been used for the linear/non-linear steady-state thermal analysis, i.e. for validation of the analytical algorithm. All FEM-based numerical computations were carried out using the COMSOL Heat Transfer Module. [Projekat Ministarstva nauke Republike Srbije, br. TR33046

  6. Exact and Metaheuristic Approaches for a Bi-Objective School Bus Scheduling Problem.

    Science.gov (United States)

    Chen, Xiaopan; Kong, Yunfeng; Dang, Lanxue; Hou, Yane; Ye, Xinyue

    2015-01-01

    As a class of hard combinatorial optimization problems, the school bus routing problem has received considerable attention in the last decades. For a multi-school system, given the bus trips for each school, the school bus scheduling problem aims at optimizing bus schedules to serve all the trips within the school time windows. In this paper, we propose two approaches for solving the bi-objective school bus scheduling problem: an exact method of mixed integer programming (MIP) and a metaheuristic method which combines simulated annealing with local search. We develop MIP formulations for homogenous and heterogeneous fleet problems respectively and solve the models by MIP solver CPLEX. The bus type-based formulation for heterogeneous fleet problem reduces the model complexity in terms of the number of decision variables and constraints. The metaheuristic method is a two-stage framework for minimizing the number of buses to be used as well as the total travel distance of buses. We evaluate the proposed MIP and the metaheuristic method on two benchmark datasets, showing that on both instances, our metaheuristic method significantly outperforms the respective state-of-the-art methods. PMID:26176764

  7. Exact and Metaheuristic Approaches for a Bi-Objective School Bus Scheduling Problem.

    Directory of Open Access Journals (Sweden)

    Xiaopan Chen

    Full Text Available As a class of hard combinatorial optimization problems, the school bus routing problem has received considerable attention in the last decades. For a multi-school system, given the bus trips for each school, the school bus scheduling problem aims at optimizing bus schedules to serve all the trips within the school time windows. In this paper, we propose two approaches for solving the bi-objective school bus scheduling problem: an exact method of mixed integer programming (MIP and a metaheuristic method which combines simulated annealing with local search. We develop MIP formulations for homogenous and heterogeneous fleet problems respectively and solve the models by MIP solver CPLEX. The bus type-based formulation for heterogeneous fleet problem reduces the model complexity in terms of the number of decision variables and constraints. The metaheuristic method is a two-stage framework for minimizing the number of buses to be used as well as the total travel distance of buses. We evaluate the proposed MIP and the metaheuristic method on two benchmark datasets, showing that on both instances, our metaheuristic method significantly outperforms the respective state-of-the-art methods.

  8. Factors associated with self-reported driver sleepiness and incidents in city bus drivers.

    Science.gov (United States)

    Anund, Anna; Ihlström, Jonas; Fors, Carina; Kecklund, Göran; Filtness, Ashleigh

    2016-08-01

    Driver fatigue has received increased attention during recent years and is now considered to be a major contributor to approximately 15-30% of all crashes. However, little is known about fatigue in city bus drivers. It is hypothesized that city bus drivers suffer from sleepiness, which is due to a combination of working conditions, lack of health and reduced sleep quantity and quality. The overall aim with the current study is to investigate if severe driver sleepiness, as indicated by subjective reports of having to fight sleep while driving, is a problem for city based bus drivers in Sweden and if so, to identify the determinants related to working conditions, health and sleep which contribute towards this. The results indicate that driver sleepiness is a problem for city bus drivers, with 19% having to fight to stay awake while driving the bus 2-3 times each week or more and nearly half experiencing this at least 2-4 times per month. In conclusion, severe sleepiness, as indicated by having to fight sleep during driving, was common among the city bus drivers. Severe sleepiness correlated with fatigue related safety risks, such as near crashes. PMID:27098307

  9. EtherBone - A Network Layer for the Wishbone SoC Bus

    CERN Document Server

    Kreider, M; Lewis, J; Włostowski, T; Serrano, J

    2011-01-01

    Today, there are several System on a Chip (SoC) bus systems. Typically, these buses are confined on-chip and rely on higher level components to communicate with the outside world. Taking these systems a step further, we see the possibility of extending the reach of the SoC bus to remote FPGAs or processors. This leads to the idea of the EtherBone (EB) core, which connects a Wishbone (WB) Ver. 4 Bus via a Gigabit Ethernet based network link to remote peripheral devices. EB acts as a transparent interconnect module towards attached WB Bus devices. Address information and data from one or more WB bus cycles is preceded with a descriptive header and encapsulated in a UDP/IP packet. Because of this standard compliance, EB is able to traverse Wide Area Networks and is therefore not bound to a geographic location. Due to the low level nature of the WB bus, EB provides a sound basis for remote hardware tools like a JTAG debugger, In-System-Programmer (ISP), boundary scan interface or logic analyser module. EB was de...

  10. Multi Resolution AHB Bus Tracer with Real Time Compression for SOC

    Directory of Open Access Journals (Sweden)

    J. Jagadish Reddy

    2013-01-01

    Full Text Available AMBA (Advanced Microcontroller based Bus Architecture consists of AHB, APB, ASB and AXI. In this project we are Tracing AHB (Advanced High performance Bus signals with Real time Compression and Multi-resolution Techniques. A simple transaction on the AHB consists of an address phase and a subsequent data phase. Access to the target device is controlled through a MUX , thereby admitting bus-access to one bus-master at a time. In AHB Tracer we have to Trace Address signals, Data signals and Control signals, we have to compress them depending on AHB protocols. A multi-resolution AHB on-chip bus tracer is named as SYS_HMRBT (AHB Multi-resolution Bus Tracer and is used for monitoring. The goal is to provide better compression quality and multiple resolution traces to meet the complex SoC debugging needs. Compressing all signals at cycle-accurate-level does not always meet the debugging needs. As SOCs become more complex, the transaction level debugging becomes increasingly important, since it helps designers focus on the functional behaviors, instead of interpreting complex signals. By using this SYS_HMRBT, we can achieve 79%-96% of compression depending on selected resolution mode. Tools Used for this Project are Modelsim for Simulation, and Xilinx ISE II for Synthesis

  11. Bus Travel Willingness under the Condition of Bus Information%公交信息条件下的公交出行意愿研究

    Institute of Scientific and Technical Information of China (English)

    左毅刚; 李文权; 陈茜; 李洁; 郭士永

    2014-01-01

    In-depth analysis of influencing mechanism of bus information on the residents travel mode choice is the theoretical basis of rational planning of urban bus travel information environment ,which has important significance for ur-ban traffic management and congestion mitigation .Based on the theory of planned behavior ,at the basis of three basic variables of behavior attitude ,subjective norm ,perceived behavioral control in the theory of planned behavior ,variables of transit information ,personal attributes and travel experience are added to improve the theory of planned behavior .An improved theory of planned behavior is used to build a bus travel willingness model under the condition of bus Informa-tion .With the Nanjing residents as research object ,a structural equation model is used to verify the survey data in order to determine the interaction between various factors and their impact on the willingness of bus travel .The results show that the bus information has significant and positive impact on bus travel variables of attitude ,subjective norm and per-ceived behavioral control with the influencing coefficients of 0 .533 ,0 .451 and 0 .576 respectively ,and that the bus infor-mation has indirect influence on bus travel willingness and the total effect is 0 .92 ,which shows that high quality of the in-formation can improve the appeal of bus and enhance bus travel willingness of residents .%深入解析公交信息对居民公交出行意愿的影响机理,是合理规划城市公交出行信息环境的理论基础,对于城市交通管理以及交通拥堵的缓解有着重要的意义。基于计划行为理论在行为态度、主观规范、知觉行为控制3个基本变量的基础上加入公交信息、出行经验、个人属性等变量,对计划行为理论加以改进,利用改进的计划行为理论建立公交信息条件下的公交出行意愿模型。以南京市居民为调查研究对象,运用结构方程模型对调查数

  12. Results of the staff survey: your priorities

    CERN Multimedia

    Staff Association

    2014-01-01

    This is the first in a series of articles which will give some details about the results of the Staff Association staff survey To know your priorities and the evolution of your concerns over the last decade we study how, in each of our latest three surveys, you chose from a list of 15 items the five most important and classified them by assigning them a priority, from the most important to the fifth most important. The list of fifteen items, and a short description, follows. Career evolution (classification, level of recruitment, advancement, promotion) Salary level Family policy (recognition of partners, allowances, school fees, kindergarten, nursery, crèche, parental leave) Health insurance Non-residence and international indemnity Annual salary adjustment (cost variation index) Contract policy (duration, recruitment, award of IC, conditions of the beginning and ending of the contract) Motivation at work (interest, team, supervision, mobility, reward scheme) Pensions (retirement, disability, o...

  13. Effects of biodiesel on emissions of a bus diesel engine.

    Science.gov (United States)

    Kegl, Breda

    2008-03-01

    This paper discusses the influence of biodiesel on the injection, spray, and engine characteristics with the aim to reduce harmful emissions. The considered engine is a bus diesel engine with injection M system. The injection, fuel spray, and engine characteristics, obtained with biodiesel, are compared to those obtained with mineral diesel (D2) under various operating regimes. The considered fuel is neat biodiesel from rapeseed oil. Its density, viscosity, surface tension, and sound velocity are determined experimentally and compared to those of D2. The obtained results are used to analyze the most important injection, fuel spray, and engine characteristics. The injection characteristics are determined numerically under the operating regimes, corresponding to the 13 mode ESC test. The fuel spray is obtained experimentally under peak torque condition. Engine characteristics are determined experimentally under 13 mode ESC test conditions. The results indicate that, by using biodiesel, harmful emissions (NO(x), CO, smoke and HC) can be reduced to some extent by adjusting the injection pump timing properly. PMID:17350250

  14. Evolution of weighted complex bus transit networks with flow

    Science.gov (United States)

    Huang, Ailing; Xiong, Jie; Shen, Jinsheng; Guan, Wei

    2016-02-01

    Study on the intrinsic properties and evolutional mechanism of urban public transit networks (PTNs) has great significance for transit planning and control, particularly considering passengers’ dynamic behaviors. This paper presents an empirical analysis for exploring the complex properties of Beijing’s weighted bus transit network (BTN) based on passenger flow in L-space, and proposes a bi-level evolution model to simulate the development of transit routes from the view of complex network. The model is an iterative process that is driven by passengers’ travel demands and dual-controlled interest mechanism, which is composed of passengers’ spatio-temporal requirements and cost constraint of transit agencies. Also, the flow’s dynamic behaviors, including the evolutions of travel demand, sectional flow attracted by a new link and flow perturbation triggered in nearby routes, are taken into consideration in the evolutional process. We present the numerical experiment to validate the model, where the main parameters are estimated by using distribution functions that are deduced from real-world data. The results obtained have proven that our model can generate a BTN with complex properties, such as the scale-free behavior or small-world phenomenon, which shows an agreement with our empirical results. Our study’s results can be exploited to optimize the real BTN’s structure and improve the network’s robustness.

  15. MEASURING CUSTOMER’S SATISFACTION ON BUS TRANSPORTATION

    Directory of Open Access Journals (Sweden)

    Rabiul Islam

    2014-01-01

    Full Text Available The purpose of the study is to examine the factors measuring customers’ satisfaction, especially the impact of service quality on customers’ satisfaction in public transportation industry in the university town of Sintok located in Kedah province of Malaysia. In order to assess the relationships between service quality and customer satisfaction survey http://www.scientificjournals.org/journals2007/articles/1003.htmdata were collected from 300 Bus commuters. All hypotheses were tested using Pearson correlations, controlling for the background variables of gender, marital status, ethnicity and education. The results indicate that hypotheses 1 through 5 were supported. Using multiple regressions as a basis for causal paths, a model was developed that examined the influence of all five dimensions of service quality on customers’ satisfaction. The model explained 26.9% of the variance which indicates that 26.9% of the changes in the dependent variable are explained by the independent variables. Altogether, independent variables explained 26.9% of the variations.

  16. Bus Based Synchronization Method for CHIPPER Based NoC

    Directory of Open Access Journals (Sweden)

    D. Muralidharan

    2016-01-01

    Full Text Available Network on Chip (NoC reduces the communication delay of System on Chip (SoC. The main limitation of NoC is power consumption and area overhead. Bufferless NoC reduces the area complexity and power consumption by eliminating buffers in the traditional routers. The bufferless NoC design should include live lock freeness since they use hot potato routing. This increases the complexity of bufferless NoC design. Among the available propositions to reduce this complexity, CHIPPER based bufferless NoC is considered as one of the best options. Live lock freeness is provided in CHIPPER through golden epoch and golden packet. All routers follow some synchronization method to identify a golden packet. Clock based method is intuitively followed for synchronization in CHIPPER based NoCs. It is shown in this work that the worst-case latency of packets is unbearably high when the above synchronization is followed. To alleviate this problem, broadcast bus NoC (BBus NoC approach is proposed in this work. The proposed method decreases the worst-case latency of packets by increasing the golden epoch rate of CHIPPER.

  17. System Interconnect Bus (SIB) compatible multi crate CAMAC Controller (CC)

    International Nuclear Information System (INIS)

    This paper describes design of SIB compatible crate controller with PC interface. SIB is a general-purpose parallel 1/O interface bus used for connecting multi crate system with single PC-interface. The crate controller comprises of a dedicated PC-AT add-on SIB interface card and two width CAMAC module designed to work at station 24 and station 25 of CAMAC crate. PC Interface card (SIBINT) is used for communication between PC/AT host computer and CAMAC Crates. The controller module incorporates a set of registers, logic to generate CAMAC data way timing. Transmission protocol used is RS485 standard. This controller is used for multiple CAMAC crates system, interfaced to PC, using a 60 core twisted pair flat ribbon cable. The crate controller is developed for use in process control, general-purpose data acquisition and control system and laboratory automation. Sustained data transfer rate achieved by controller is 115 Kword/sec each word being 32 bits in length. (author)

  18. PRIORITIES FOR EXECUTIVE DEVELOPMENT IN PORTUGAL

    OpenAIRE

    Barañano, Ana Maria

    2002-01-01

    Based on a survey of 206 Portuguese managers enrolled in training courses in the lnstituto Superior de Gestao during the 1999-2000 academic year, this article aims at establishing priorities for executive development in this country by detecting the lacks of knowledge of those managers. The article explores the importance given by the managers to four areas of a manager's role (strategic vision, management tools, managerial skills and emotional capacities) and to several factors used to im...

  19. Conclusions on severe accident research priorities

    International Nuclear Information System (INIS)

    Highlights: • Estimation of research priorities related to severe accident phenomena. • Consideration of new topics, partly linked to the severe accidents at Fukushima. • Consideration of results of recent projects, e.g. SARNET, ASAMPSA2, OECD projects. - Abstract: The objectives of the SARNET network of excellence are to define and work on common research programs in the field of severe accidents in Gen. II–III nuclear power plants and to further develop common tools and methodologies for safety assessment in this area. In order to ensure that the research conducted on severe accidents is efficient and well-focused, it is necessary to periodically evaluate and rank the priorities of research. This was done at the end of 2008 by the Severe Accident Research Priority (SARP) group at the end of the SARNET project of the 6th Framework Programme of European Commission (FP6). This group has updated this work in the FP7 SARNET2 project by accounting for the recent experimental results, the remaining safety issues as e.g. highlighted by Level 2 PSA national studies and the results of the recent ASAMPSA2 FP7 project. These evaluation activities were conducted in close relation with the work performed under the auspices of international organizations like OECD or IAEA. The Fukushima-Daiichi severe accidents, which occurred while SARNET2 was running, had some effects on the prioritization and definition of new research topics. Although significant progress has been gained and simulation models (e.g. the ASTEC integral code, jointly developed by IRSN and GRS) were improved, leading to an increased confidence in the predictive capabilities for assessing the success potential of countermeasures and/or mitigation measures, most of the selected research topics in 2008 are still of high priority. But the Fukushima-Daiichi accidents underlined that research efforts had to focus still more to improve severe accident management efficiency

  20. Priority-setting in Finnish healthcare.

    Science.gov (United States)

    Rissanen, P; Häkkinen, U

    1999-12-01

    The characteristics which affect priority setting in the Finnish healthcare system include strong municipal (local) administration, no clear separation between producers and purchasers, a duality in funding, and the potential for physicians in public hospitals to practice in the private sector. This system has its strengths, such as the possibility to effectively co-ordinate social and healthcare services, and a strong incentive to take care of local needs, because of municipal responsibility to finance these services largely through local taxes. However, the municipalities are typically too small to take advantage of these potentials, their knowledge is scarce especially of secondary care and their negotiating power with respect to hospitals is low. Local politicians also have a dual role: they represent the needs of the local population but simultaneously they are decision-makers in hospitals. Full-time physicians are allowed to act in a dual role as well; they can run a private practice, which is paid for on a fee-for-service basis, while the hospital pays (mostly) a fixed monthly salary. The share of financing which flows from the National Sickness Insurance system to healthcare users may have adverse effects on the local use of resources. The broad national consensus statement on patient-level priorities did not reach any general rules on priorities. Strong support was given to citizens' equal right to access all healthcare services. In healthcare practice, this general rule has some exemptions. First, the reimbursement schemes for prescribed drugs vary depending on the severity and chronic nature of the disease. Secondly, the tax-financed dental services for the young are clearly prioritised over those of older citizens. In the consensus statement, emphasis was put on improving the efficiency of producing health services in order to avoid having to impose patient-level priorities. PMID:10827305

  1. Space Policy Strategies and Priorities in Russia

    OpenAIRE

    Anastasia Edelkina; Oleg Karasev; Natalia Velikanova

    2015-01-01

    This article explores new innovation policy measures aimed at ongoing transformation of the space industry in Russia. The current implementation of a wide range of state programs and presidential decrees helps to maintain the leading position of Russia in the space industry and expanding international cooperation. The main objective of the paper is to present the principal directions of space policy development in Russia, including its priorities and the tasks to be solved in the short and mi...

  2. Information Priority Based Multicast Routing in MANETs

    Directory of Open Access Journals (Sweden)

    Rajashekhar

    2011-07-01

    Full Text Available The routing efficiency in Mobile Ad Hoc Networks (MANETs suffers from frequent batterydrains, mobility and large variation of received signal strength. Thus, nodes and links in MANETsbecome more vulnerable and unstable. Multicast routing in MANETs for group communication requiresestablishment of reliable links between neighbouring nodes called as reliability pair beginning from thesource and extending such reliability pairs enroute to the destination. If there are multiple paths fromsource to every multicast destination, the reliability of source information may be enhanced by sendinghigher priority information on higher priority path.In this paper, we propose a scheme of Information Priority based Multicast Routing in MANETsusing multiple paths (IPMRM. IPMRM operates in following phases. (1 Reliability pair factorcomputation based on node power level, received differential signal strength between the nodes andmobility. (2 Pruning neighbor nodes that have reliability pair factor lesser than a threshold. (3 Findingmulticast mesh routes with multiple paths to a destination using request and reply packets. (4 Priorityassignment to multiple paths based on minimum value of reliability pair factor of a path and informationtransfer from source to multicast destination. (4 Route maintenance against link failures. The simulationresults for packet delivery ratio and control overhead demonstrate better performance of IPMRM overOn Demand Multicast Routing Protocol (ODMRP and Enhanced ODMRP (EODMRP.

  3. The emergence of global disease control priorities.

    Science.gov (United States)

    Shiffman, Jeremy; Beer, Tanya; Wu, Yonghong

    2002-09-01

    How do global disease control priorities emerge? This paper examines the post-World War II histories of efforts to control three diseases--polio, malaria and tuberculosis--to investigate this issue. The paper draws from the policy studies literature to evaluate three models of the priority generation process. A rational model suggests logical selection based on global burden and the availability of cost-effective interventions. An incremental model suggests a drawn out process in which health priorities emerge gradually and interventions reach affected populations through slow diffusion. A punctuated equilibrium model suggests a more complex pattern: long periods of stability during which interventions are available only to select populations, punctuated by bursts of attention as these interventions spread across the globe in concentrated periods of time. The paper finds that the punctuated equilibrium model corresponds most closely to efforts to control these three diseases. Bursts are associated with the convergence of three conditions: the widespread acceptance of the disease as a threat; a perception that human interventions can control disease transmission; and the formation of a transnational coalition of health actors concerned with fighting the disease. The generation of each condition requires considerable groundwork, the reason for long periods of stability. Initiatives take off rapidly when the conditions couple, the reason for bursts. The paper aims to spark additional research on the subject of global disease control agenda setting, a neglected issue in the health policy literature. PMID:12135988

  4. Priority of areas for agricultural radiovulnerability mapping

    Energy Technology Data Exchange (ETDEWEB)

    Rochedo, Elaine R.R.; Igreja, Eduardo, E-mail: elainerochedo@gmail.com, E-mail: eduigreja@gmail.com [Instituto Militar de Engenharia (IME), Rio de Janeiro, RJ (Brazil). Programa de Engenharia Nuclear; Wasserman, Maria Angelica V., E-mail: mwasserman@ien.gov.br [Instituto de Engenharia Nuclear (IEN/CNEN-RJ), Rio de Janeiro, RJ (Brazil); Perez, Daniel V., E-mail: chpd@cnps.embrapa.br [Empresa Brasileira de Pesquisa Agropecuaria (EMBRAPA), Rio de Janeiro, RJ (Brazil). Centro Nacional de Pesquisa de Solos; Rochedo, Pedro R.R., E-mail: rochedopedro@gmail.com [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Programa de Planejamento Energetico; Silva, Diogo N.G., E-mail: diogongs@gmail.com [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Instituto de Biofisica Carlos Chagas Filho

    2013-07-01

    The methodology for classifying areas according to soil properties for the vulnerability to a {sup 137}Cs contamination is of high importance to the preparedness related to nuclear and/or radiological accidents that lead to release of radionuclides to the environment with the consequent contamination of agricultural areas. The priority of research for agricultural areas should then focus on the surrounding areas of nuclear power plant that have higher probability of public exposure through the ingestion pathway. The objective of this work was to create a rank order for priority of areas to be mapped based on EMBRAPA database on soil properties. The 16 municipalities previously selected to define parameters for dose assessment simulations related to the Brazilian Nuclear Power Plants, located in the district of Angra dos Reis, Rio de Janeiro, have been investigated in order to create this rank order to direct the research on radio vulnerability mapping, considering their relevance to public exposure based on their agricultural productivity. The two aspects selected in this study account for the maximum loss of income and to the collective doses that can be averted due to the banning of agricultural products. These quantities are inputs to optimization analysis. The priority defined shall then guide research on both the adequate values for the transfer factors and on the agricultural countermeasures suitable to each area according to the cause(s) of their vulnerability and their typical agricultural crops. (author)

  5. Priority image transmission in wireless sensor networks

    International Nuclear Information System (INIS)

    The emerging technology during the last years allowed the development of new sensors equipped with wireless communication which can be organized into a cooperative autonomous network. Some application areas for wireless sensor networks (WSNs) are home automations, health care services, military domain, and environment monitoring. The required constraints are limited capacity of processing, limited storage capability, and especially these nodes are limited in energy. In addition, such networks are tiny battery powered which their lifetime is very limited. During image processing and transmission to the destination, the lifetime of sensor network is decreased quickly due to battery and processing power constraints. Therefore, digital image transmissions are a significant challenge for image sensor based Wireless Sensor Networks (WSNs). Based on a wavelet image compression, we propose a novel, robust and energy-efficient scheme, called Priority Image Transmission (PIT) in WSN by providing various priority levels during image transmissions. Different priorities in the compressed image are considered. The information for the significant wavelet coeffcients are transmitted with higher quality assurance, whereas relatively less important coefficients are transmitted with lower overhead. Simulation results show that the proposed scheme prolongs the system lifetime and achieves higher energy efficiency in WSN with an acceptable compromise on the image quality.

  6. 15 CFR 700.20 - Use of priority ratings.

    Science.gov (United States)

    2010-01-01

    ...) BUREAU OF INDUSTRY AND SECURITY, DEPARTMENT OF COMMERCE NATIONAL SECURITY INDUSTRIAL BASE REGULATIONS DEFENSE PRIORITIES AND ALLOCATIONS SYSTEM Industrial Priorities for Energy Programs § 700.20 Use of... maintenance of energy facilities....

  7. 15 CFR 700.21 - Application for priority rating authority.

    Science.gov (United States)

    2010-01-01

    ... Trade (Continued) BUREAU OF INDUSTRY AND SECURITY, DEPARTMENT OF COMMERCE NATIONAL SECURITY INDUSTRIAL BASE REGULATIONS DEFENSE PRIORITIES AND ALLOCATIONS SYSTEM Industrial Priorities for Energy Programs... published in 10 CFR part 216....

  8. A Comparison of Tram Priority at Signalized Intersections

    CERN Document Server

    Zhang, Lele

    2013-01-01

    We study tram priority at signalized intersections using a stochastic cellular automaton model for multimodal traffic flow. We simulate realistic traffic signal systems, which include signal linking and adaptive cycle lengths and split plans, with different levels of tram priority. We find that tram priority can improve service performance in terms of both average travel time and travel time variability. We consider two main types of tram priority, which we refer to as full and partial priority. Full tram priority is able to guarantee service quality even when traffic is saturated, however, it results in significant costs to other road users. Partial tram priority significantly reduces tram delays while having limited impact on other traffic, and therefore achieves a better result in terms of the overall network performance. We also study variations in which the tram priority is only enforced when trams are running behind schedule, and we find that those variations retain almost all of the benefit for tram op...

  9. Community Priority Index: utility, applicability and validation for priority setting in community-based participatory research

    Directory of Open Access Journals (Sweden)

    Hamisu M. Salihu

    2015-07-01

    Full Text Available Background. Providing practitioners with an intuitive measure for priority setting that can be combined with diverse data collection methods is a necessary step to foster accountability of the decision-making process in community settings. Yet, there is a lack of easy-to-use, but methodologically robust measures, that can be feasibly implemented for reliable decision-making in community settings. To address this important gap in community based participatory research (CBPR, the purpose of this study was to demonstrate the utility, applicability, and validation of a community priority index in a community-based participatory research setting. Design and Methods. Mixed-method study that combined focus groups findings, nominal group technique with six key informants, and the generation of a Community Priority Index (CPI that integrated community importance, changeability, and target populations. Bootstrapping and simulation were performed for validation. Results. For pregnant mothers, the top three highly important and highly changeable priorities were: stress (CPI=0.85; 95%CI: 0.70, 1.00, lack of affection (CPI=0.87; 95%CI: 0.69, 1.00, and nutritional issues (CPI=0.78; 95%CI: 0.48, 1.00. For non-pregnant women, top priorities were: low health literacy (CPI=0.87; 95%CI: 0.69, 1.00, low educational attainment (CPI=0.78; 95%CI: 0.48, 1.00, and lack of self-esteem (CPI=0.72; 95%CI: 0.44, 1.00. For children and adolescents, the top three priorities were: obesity (CPI=0.88; 95%CI: 0.69, 1.00, low self-esteem (CPI=0.81; 95%CI: 0.69, 0.94, and negative attitudes toward education (CPI=0.75; 95%CI: 0.50, 0.94. Conclusions. This study demonstrates the applicability of the CPI as a simple and intuitive measure for priority setting in CBPR.

  10. Effect of Educational Program to Decrease Substance Abuse among Suburban Bus Drivers Based on Theory of Planned Behavior

    OpenAIRE

    Moeini, B.; S. Bashirian; A. Moghimbeigi; V. Kafami; A.A. Mousali

    2015-01-01

    Introduction & Objective: Driving under the influence of drugs is considered a social pathology that has adverse effects on a society. This study aimed to investigate the effect of substance abuse educational program among the bus drivers on the basis of the theory of planned be-havior. Materials & Methods: This quasi-experimental study was conducted on 80 suburban bus drivers working at Hamadan transportation terminal. The bus drivers were randomly divided in two equal groups (intervention a...

  11. Research, development and demonstration of a fuel cell/battery powered bus system. Phase 1, Final report

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1990-02-28

    Purpose of the Phase I effort was to demonstrate feasibility of the fuel cell/battery system for powering a small bus (under 30 ft or 9 m) on an urban bus route. A brassboard powerplant was specified, designed, fabricated, and tested to demonstrate feasibility in the laboratory. The proof-of-concept bus, with a powerplant scaled up from the brassboard, will be demonstrated under Phase II.

  12. Setting Priorities: Personal Values, Organizational Results. Ideas into Action Guidebooks

    Science.gov (United States)

    Cartwright, Talula

    2007-01-01

    Successful leaders get results. To get results, you need to set priorities. This book can help you do a better job of setting priorities, recognizing the personal values that motivate your decision making, the probable trade-offs and consequences of your decisions, and the importance of aligning your priorities with your organization's…

  13. Priority setting for existing chemicals : automated data selection routine

    NARCIS (Netherlands)

    Haelst, A.G. van; Hansen, B.G.

    2000-01-01

    One of the four steps within Council Regulation 793/93/EEC on the evaluation and control of existing chemicals is the priority setting step. The priority setting step is concerned with selecting high-priority substances from a large number of substances, initially starting with 2,474 high-production

  14. Smoking close to others and butt littering at bus stops: pilot observational study

    Directory of Open Access Journals (Sweden)

    Nick Wilson

    2014-02-01

    Full Text Available Background. Transportation settings such as bus stops and train station platforms are increasingly the target for new smokefree legislation. Relevant issues include secondhand smoke exposure, nuisance, litter, fire risks and the normalization of smoking. We therefore aimed to pilot study aspects of smoking behavior and butt disposal at bus stops. Methods. Systematic observation of smoking and butt disposal by smokers at bus stops. The selection of 11 sites was a mix of convenience and purposeful (bus stops on main routes in two New Zealand cities. Results. During 27 h of observation, a total of 112 lit cigarettes were observed being smoked. Smoking occurred in the presence of: just adults (46%, both young people and adults (44%, just young people (6% and alone (5%. An average of 6.3 adults and 3.8 young people were present at the bus stops while smoking occurred, at average minimum distances of 1.7 and 2.2 m respectively. In bus stops that included an enclosed shelter, 33% of the cigarettes were smoked inside the shelter with others present. Littering was the major form of cigarette disposal with 84% of cigarettes smoked being littered (95% CI; 77%–90%. Also, 4% of disposals were into vegetation, which may pose a fire risk. Conclusions. This pilot study is limited by its small size and various methodological aspects but it appears to be a first attempt to provide observational evidence around smoking at bus stops. The issues described could be considered by policy makers who are investigating national smokefree laws or by-laws covering transportation settings.

  15. A new vehicle data bus architecture and IVIS evaluation platform for ITS modulus

    Energy Technology Data Exchange (ETDEWEB)

    Spelt, P.F. [Oak Ridge National Lab., TN (United States); Kirson, A.M. [Motorola, Inc., Northbrook, IL (United States); Scott, S. [Jet Propulsion Lab., Washington, DC (United States)

    1998-12-31

    An increasing number of ITS-related after-market systems present a set of in-vehicle installation and use problems relatively unique in the history of automobile use. Many automobile manufacturers would like to offer these new state of the art devices to customers, but are hampered by the current design cycle of new cars. While auto manufacturers are indeed using multiplex buses (the automotive equivalent of a computer local area network), problems remain because manufacturers are not converging on a single bus standard. This paper presents a new dual-bus architecture to address these problems, with an In-Vehicle Information System (IVIS) research platform on which the principles embodied in the ITS Data Bus architecture can be evaluated. The dual-bus architecture has been embodied in a proposed SAE standard, with a ratification vote in December, 1996. The architecture and a reference model for the interfaces and protocols of the new bus are presented and described. The goals of the ITS Data Bus are to be inexpensive and easy to install, and to provide for safe and secure functioning. These high-level goals are embodied in the proposed standard. The IVIS Development Platform comprises a number of personal computers linked via ethernet LAN, with a high-end PC serving as the IVIS computer. In this LAN, actual devices can be inserted in place of the original PC which emulated them. This platform will serve as the development and test bed for an ITS Data Bus Conformity Test, the SAE standard for which has also been developed.

  16. Conceptual Design of the TPF-O SC Bus

    Science.gov (United States)

    Purves, Lloyd R.

    2007-01-01

    One option under current study for the Terrestrial Planet Finder-Occulter (TPF-O) observatory shares some key features of the Hubble Space Telescope (HST). Both are space telescopes with a primary mirror aperture of around 2.4 meters and designed to observe in the visible to near infrared range of wavelengths, with the major difference in science capability being that TPF-O has an areal FOV on the order of 100 times larger than that of HST. This larger FOV, whose science camera is also expected to provide fine guidance, and other mission differences, mean that most TPF-O SC bus subsystems will have very different requirements than those of HST. Unlike HST in LEO, TPF-O is designed to operate in an orbit around the Sun-Earth lagrange 2 (SEL2) point. The longer communications range to SEL2 and the large FOV require much higher performance data processing and communications than HST. Maintaining a SEL2 orbit requires TPF-O, unlike HST, to have a propulsion system. TPF-O will have a specialized tracking system that allows the formation flying occulter to maintain its required position. However, despite these additional features, the velocity required for reaching SEL2 and the limited capabilities of affordable launch vehicles require TPF-O to have a compact and low-mass design relative to HST. Finally, TPF-O may utilize a modular design to reduce development cost and, if it required, allow servicing using approaches different from those of HST.

  17. Modeling Modal Shift of Car Travelers to Buses Based on Public Transport Priority%基于公交优先的小汽车出行向公交转移模型研究

    Institute of Scientific and Technical Information of China (English)

    左忠义; 杨广川; 邵春福

    2012-01-01

    在实施公交优先政策时,往往因没有对公交专用道和社会车道所应分担的交通量做出正确的估算而造成道路资源的浪费,以至于无法真正实现公交优先的目的.本文以公交车与社会车辆的行程速度差异为研究对象,通过分析设置公交专用道后两种交通方式间的转移情况,在保证公交车服务水平的前提下基于路阻函数研究了不同公交车比例下公交车和社会车辆的行程速度曲线,并确立了小汽车向公交车的转移关系.研究结果表明,针对不同的居民出行量及模型参数值,公交车在一定的比例范围内时小汽车用户选择公交出行,并使道路交通系统达到最优.该模型可应用于城市现有道路改造时公交专用道设置及确定公交车发车间隔的参考依据.%For the implementation of public transport priority, the deviation on estimating traffic flow assignment to bus lane and general lanes may lead to the waste of road space resource, consequently fail to achieve the goal of public transport priority. In this paper, the differences between travel speed of buses and cars and modal shift relationship are explored. A travel speed curve of bus and car speed variation under various bus proportion is obtained based on road impedance function. The result shows that in accordance with distinct passenger trip volumes and modal parameter values, there is an appropriate range of bus. Within this range, car travelers are willing to shift to buses, and road traffic system can be optimized as well. The proposed model serves the installation of bus lane on existing urban roads together with determining the bus dispatch interval.

  18. Forecaster priorities for improving probabilistic flood forecasts

    Science.gov (United States)

    Wetterhall, Fredrik; Pappenberger, Florian; Alfieri, Lorenzo; Cloke, Hannah; Thielen, Jutta

    2014-05-01

    Hydrological ensemble prediction systems (HEPS) have in recent years been increasingly used for the operational forecasting of floods by European hydrometeorological agencies. The most obvious advantage of HEPS is that more of the uncertainty in the modelling system can be assessed. In addition, ensemble prediction systems generally have better skill than deterministic systems both in the terms of the mean forecast performance and the potential forecasting of extreme events. Research efforts have so far mostly been devoted to the improvement of the physical and technical aspects of the model systems, such as increased resolution in time and space and better description of physical processes. Developments like these are certainly needed; however, in this paper we argue that there are other areas of HEPS that need urgent attention. This was also the result from a group exercise and a survey conducted to operational forecasters within the European Flood Awareness System (EFAS) to identify the top priorities of improvement regarding their own system. They turned out to span a range of areas, the most popular being to include verification of an assessment of past forecast performance, a multi-model approach for hydrological modelling, to increase the forecast skill on the medium range (>3 days) and more focus on education and training on the interpretation of forecasts. In light of limited resources, we suggest a simple model to classify the identified priorities in terms of their cost and complexity to decide in which order to tackle them. This model is then used to create an action plan of short-, medium- and long-term research priorities with the ultimate goal of an optimal improvement of EFAS in particular and to spur the development of operational HEPS in general.

  19. Absolute Priority for a Vehicle in VANET

    Science.gov (United States)

    Shirani, Rostam; Hendessi, Faramarz; Montazeri, Mohammad Ali; Sheikh Zefreh, Mohammad

    In today's world, traffic jams waste hundreds of hours of our life. This causes many researchers try to resolve the problem with the idea of Intelligent Transportation System. For some applications like a travelling ambulance, it is important to reduce delay even for a second. In this paper, we propose a completely infrastructure-less approach for finding shortest path and controlling traffic light to provide absolute priority for an emergency vehicle. We use the idea of vehicular ad-hoc networking to reduce the imposed travelling time. Then, we simulate our proposed protocol and compare it with a centrally controlled traffic light system.

  20. Final Priority. Rehabilitation Training: Vocational Rehabilitation Workforce Innovation Technical Assistance Center. Final priority.

    Science.gov (United States)

    2015-08-13

    The Assistant Secretary for Special Education and Rehabilitative Services announces a priority under the Rehabilitation Training program. The Assistant Secretary may use this priority for competitions in fiscal year 2015 and later years. We take this action to provide training and technical assistance to State vocational rehabilitation agencies to improve services under the State Vocational Rehabilitation Services program and State Supported Employment Services program for individuals with disabilities, including those with the most significant disabilities, and to implement changes to the Rehabilitation Act of 1973, as amended by the Workforce Innovation and Opportunity Act (WIOA), signed into law on July 22, 2014. PMID:26292366

  1. Implementation of Ada protocols on Mil-STD-1553 B data bus

    Science.gov (United States)

    Ruhman, Smil; Rosemberg, Flavia

    1986-01-01

    Standardization activity of data communication in avionic systems started in 1968 for the purpose of total system integration and the elimination of heavy wire bundles carrying signals between various subassemblies. The growing complexity of avionic systems is straining the capabilities of MIL-STD-1553 B (first issued in 1973), but a much greater challenge to it is posed by Ada, the standard language adopted for real-time, computer embedded-systems. Hardware implementation of Ada communication protocols in a contention/token bus or token ring network is proposed. However, during the transition period when the current command/response multiplex data bus is still flourishing and the development environment for distributed multi-computer Ada systems is as yet lacking, a temporary accomodation of the standard language with the standard bus could be very useful and even highly desirable. By concentrating all status informtion and decisions at the bus controller, it was found to be possible to construct an elegant and efficient harware impelementation of the Ada protocols at the bus interface. This solution is discussed.

  2. Real-time and reliability analysis of time-triggered CAN-bus

    Institute of Scientific and Technical Information of China (English)

    Xia Jiqiang; Zhang Chuansen; Bai Ronggang; Xue Liqiang

    2013-01-01

    Real-time performance and reliability are two most important issues in applications of time-triggered controller area network (CAN) bus systems at present.A scheduling matrix of time-triggered CAN-bus system is established using average-loading algorithm.Periodic messages are guaranteed to transmit without delay by distributing independent transmission windows within the system matrix.Considering the traditional CAN-bus transmission mechanism and the time-triggered feature,an algorithm is improved to calculate the worst-case delay of event-triggered messages in time-triggered CAN-bus systems.The failure probability is calculated for event-triggered messages whose worst-case delay exceeds their deadlines.Different levels of redundant structures of CAN-bus circuits are analyzed and the maintenance management is proposed to improve the system reliability.Finally,the reliabilities of different structures are calculated and the influences of maintenance on the system reliability are analyzed.

  3. Design and Analysis of Virtual Bus Transport Using Synchronous Digital Hierarchy/Synchronous Optical Networking

    Directory of Open Access Journals (Sweden)

    R. Hassan

    2008-01-01

    Full Text Available This study presented a new data link layer design for the virtual bus architecture. The virtual bus is a hierarchical access network offered a broadcast capability for data and signaling. The proposed of the study is to support Quality of Service (QoS in network. During study, the most promising technology capable of delivering full service access at high data rates is Synchronous Digital Hierarchy (SDH/Synchronous Optical Networking (SONET. For that reason, we develop SDH/SONET as a physical layer for the virtual bus network. The main goal of this investigation was to study the performance of transmission medium and the overall performance of the network. We exemplify a Multiple Access Protocol (MAP with Generic Frame Procedure (GFP for transmitting IP network protocol datagram over SDH/SONET. This is a novel method for transmitting MAP with GFP. The protocol adds multi-terminal access capability to an inherently point-to-point link. It enabled the design of seamless networking environments using SDH/SONET as the transmission medium for Metropolitan Area Network (MAN. The new frame mapping protocol is known as Virtual Bus Transport (VBT. The performance of multiple traffic generators in a virtual bus network is of major interest for mobile network provider. We used OMNeT simulation tool to evaluate the result. Through the simulation it proved that the VBT scheduling technique offers better treatment mainly to the higher Qos requirement traffic.

  4. Geometric-Process-Based Battery Management Optimizing Policy for the Electric Bus

    Directory of Open Access Journals (Sweden)

    Yan Li

    2015-01-01

    Full Text Available With the rapid development of the electric vehicle industry and promotive policies worldwide, the electric bus (E-bus has been adopted in many major cities around the world. One of the most important factors that restrain the widespread application of the E-bus is the high operating cost due to the deficient battery management. This paper proposes a geometric-process-based (GP-based battery management optimizing policy which aims to minimize the average cost of the operation on the premise of meeting the required sufficient battery availability. Considering the deterioration of the battery after repeated charging and discharging, this paper constructs the model of the operation of the E-bus battery as a geometric process, and the premaintenance time has been considered with the failure repairment time to enhance the GP-based battery operation model considering the battery cannot be as good as new after the two processes. The computer simulation is carried out by adopting the proposed optimizing policy, and the result verifies the effectiveness of the policy, denoting its significant performance on the application of the E-bus battery management.

  5. Ecodriving for Reduction of Bus Transit Emission with Vehicle’s Hybrid Dynamic Model

    Directory of Open Access Journals (Sweden)

    Xiuzheng Zheng

    2015-01-01

    Full Text Available This paper formulates a global ecodriving optimal control to advise the green driving speed for bus transit to minimize the exhaust emission using Vehicle-to-Infrastructure (V2I communication. Assuming communication between vehicles and infrastructure (V2I and knowledge of traffic signal timings and waiting passengers at stations are known, an optimal driving speed is proposed to minimize the total vehicle emissions of the bus route. The dwell time of the bus transit at each station which includes two parts is proposed. A traffic lights timing model is employed as constraints to control the formation of the green wave band. Vehicle specific power (VSP model is further applied to evaluate the exhaust emission level linked with the speed and acceleration of the bus transit. An approximate sixteen-kilometer traffic network including fourteen intersections and fifteen stations of Beijing bus transit line 1 in Chaoyang District, Beijing, is chosen to investigate the performance of the developed ecodriving approach.

  6. Introduction to corridor selection & assessment for Bus Rapid Transit System (BRTS in Hyderabad

    Directory of Open Access Journals (Sweden)

    Bhanu Kireeti Chanda

    2014-06-01

    Full Text Available Bus rapid transit system is an innovation and it is up gradation to the present transport system. BRT is affordable, adaptable and cost effective. The term of rapid transit system means a form of high speed urban passenger transportation. Here, the mode of transportation is bus hence it is called as bus rapid transit system (BRTS. Transportation facilities and the system will be different form different countries. Especially for the developing countries, transportation is a problem and BRT is the best way to overcome it. If a country gets richer the development will be seen in different aspects like education, industry, science and technology etc., except transport which will get worse. There are many ways to get rid of these traffic issues and transport problems. What attracted the countries to install BRT is the bus way concept as that it can cover whole city and is cheaper than the rail. BRT is a high speed rapid transit system using high capacity vehicles, physically separated bus ways, modern station with electronic fare collection, rapid boarding and high service frequency which result more passengers and less congestion. This paper presents an overview of BRTS and corridor selection & assessment for it in Hyderabad through surveys etc.

  7. Utility and Weight of Factors of Bus Transit’ s Service Quality Analysis in Nanjing

    Institute of Scientific and Technical Information of China (English)

    Jianrong Liu; Tangyi Guo

    2015-01-01

    Service quality is a major factor that affects how public transport users evaluate bus service. In order to evaluate how bus users make trade⁃offs across travel cost, time, reliability, etc., and to investigate the extent to which the components of service quality vary according to relevant trip characteristics, this paper analyzes service quality of bus transit with the conjoint analysis. Through data analysis, the levels ’ utility values of reliability, waiting time, walking time, etc.,on the commuter trip and the non⁃commuter trip are gotten, so it is the utility function of the transit system. Then the factors’ weights are obtained through the utility values. The results show that on the commuter trip, passengers value reliability the most, which is followed by waiting time and walking time, while in⁃bus environment, price and station environment’ s weights are small. While on the non⁃commuter trip, the weights in a higher order to lower order are the first for reliability, the second for in⁃bus environment, the third for walking time, the fourth for station environment and the last for ticket price.

  8. An interconnecting bus power optimization method combining interconnect wire spacing with wire ordering

    Institute of Scientific and Technical Information of China (English)

    Zhu Zhang-Ming; Hao Bao-Tian; En Yun-Fei; Yang Yin-Tang; Li Yue-Jin

    2011-01-01

    On-chip interconnect buses consume tens of percents of dynamic power in a nanometer scale integrated circuit and they will consume more power with the rapid scaling down of technology size and continuously rising clock frequency,therefore it is meaningful to lower the interconnecting bus power in design. In this paper, a simple yet accurate interconnect parasitic capacitance model is presented first and then, based on this model, a novel interconnecting bus optimization method is proposed. Wire spacing is a process for spacing wires for minimum dynamic power, while wire ordering is a process that searches for wire orders that maximally enhance it. The method, i.e., combining wire spacing with wire ordering, focuses on bus dynamic power optimization with a consideration of bus performance requirements.The optimization method is verified based on various nanometer technology parameters, showing that with 50% slack of routing space, 25.71% and 32.65% of power can be saved on average by the proposed optimization method for a globalbus and an intermediate bus, respectively, under a 65-nm technology node, compared with 21.78% and 27.68% of power saved on average by uniform spacing technology. The proposed method is especially suitable for computer-aided designof nanometer scale on-chip buses.

  9. Ecological footprint analysis on the behavior of bus consumption%公交出行消费行为生态足迹分析

    Institute of Scientific and Technical Information of China (English)

    陈虹; 洪伟; 吴承祯; 陈灿

    2011-01-01

    -person/time share was up to 4.69 m2. As to electric bikes, although there was no exhaust emission in the driving process,they also consume lots of electricity in the charging process because of the huge numbers. Therefore, synthetically speaking, bus remains most popular public transportation means among all the alternatives.Thus, all the influential factors considered, the communal bus transportation should be developed with priority. From what is said in our quantitative and qualitative analysis, bus should be the best favorable traffic mode, if we really take the ideal of building-up a harmonious society with low-carbon consumption as the primary outlook upon our future.%计算了福州市公交的生态足迹,并进行了定量对比分析.结果表明,福州市1989-2009年公交总生态足迹呈直线上升的趋势,从1989年的233.22 hm2增加至2009年的19 160.07 hm2,增加了81倍,其中,化石能源生态足迹所占比重相当大,从1989年的68%增加至2009年的89%.伴随着城市化的进程,公交出行率不断增加,每人次公交出行的生态足迹呈现抛物线的关系.1989-2004年呈上升趋势,2004-2009年呈下降趋势,2009年每人次生态足迹为0.24 m2.同时,对比福州市的几种主要出行工具,综合出行时间和环境压力,公交是最值得推荐的一种出行方式.

  10. Priority of areas for agricultural countermeasure assessment

    International Nuclear Information System (INIS)

    Within the overall preparedness related to nuclear and/or radiological accidents that lead to the release of radionuclides to the environment with the consequent contamination of agricultural areas, the priority of research for agricultural areas should then focus on the surrounding areas of nuclear power plants that have higher probability of public exposure through the ingestion pathway. The objective of this work was to create a rank order of priority of agricultural products to be considered in assessing the effects of countermeasures, based on both economic value and doses to the public. Additionally, the study describes relevant needs of radioecological studies to improve short and long-terms dose assessments. . Sixteen municipalities surrounding the Brazilian Nuclear Power Central were analyzed for a contamination with 137Cs, considering seasonal aspects related to agricultural practices in the Southeastern Brazil. Rank order provided by considering economical aspects shows that there is a need for radioecological research for some high value products, such as palmetto and sugar cane, and the need to include in the current model more detailed description for some food items, such as eggs. Combined rank criteria shows that main product within the considered area is milk. As so, the study of countermeasures for the ingestion of milk should be prioritized. (authors)

  11. Implementation of outline software for priority management

    Energy Technology Data Exchange (ETDEWEB)

    Miller, P.E.

    1989-01-01

    No matter what your profession, most busy days require that you juggle priorities -- especially when an unexpected occurrence changes your plans. In spite of such priority juggling, relatively few people use computers to help them to decide on which job to do next. Such lack of this computer application is of no surprise. Consider that the human brain has a 100 billion-cell capacity. Each neuron of the brain is capable of receiving 100,000 or more signals. It is easy to understand, then, why such a powerful organizing and memory system is so apt with notebook, yellow stickies, or pad and pencil. But if you are responsible for the status or progress of as many as 25 to 200 or more jobs on a given day, then a computer with outliner software could be one of your most useful tools. Some trees in the work-jungle change overnight. Outliner software can help you to keep track of such changes that beget changes, seemingly without end. 14 figs.

  12. Future priorities for a successful dental school.

    Science.gov (United States)

    Ranney, R R

    1999-01-01

    Priorities for success for a dental school of the future are considered. University relations, demographic changes, digital information technology and functional genetic technology are emphasised as important environmental pressures that will influence the priorities. The goal advocated for university relations is creating a culture in which the dental school is viewed as integral and necessary to the University's mission. Financial stability, quality research and scholarship and provision of health care for employees may be important ingredients. Keeping an eye on demographic changes and taking the school's business where the customers are is another key to success in the future. Ethnic diversity, changing approaches with changing disease patterns, flexibility in schedule and collaborations in areas of need are strategies to be considered. The emerging field of functional genetics typifies a new biology with which currency will be needed in a health-sciences field. Necessity for faculty development, adoption of molecular diagnostic technologies, emphasis on risk assessment and preventive counselling, and a shift to a wellness model are likely consequences. Digital information technology will result in increased distance-learning opportunity. Dental schools will also need to make accommodating changes in curriculum structure available. Conversion to electronic imaging and totally electronic patient records are likely to become standard. PMID:10865371

  13. The Commercial Market For Priority Review Vouchers.

    Science.gov (United States)

    Ridley, David B; Régnier, Stephane A

    2016-05-01

    In 2007 the US Congress created the priority review voucher program to encourage the development of drugs for neglected diseases. Under the program, the developer of a drug that treats a neglected disease receives both a faster review of the drug by the Food and Drug Administration and a voucher for a faster review of a different drug. The developer can sell the voucher. We estimated the commercial value of the voucher using US sales of new treatments approved in the period 2007-09. A third of the commercial value of a voucher comes from capturing market share from competitors, nearly half from the value of earlier sales because of the expedited review, and less than a quarter from lengthening the time between approval and the launch of a generic competitor. We estimate that if only one priority review voucher is available in a year, it will be worth more than $200 million, but if four vouchers are available, the value could fall below $100 million. Congress should be cautious about expanding the voucher program, because increasing the number of vouchers sharply decreases the expected price. Lower voucher prices could undermine the incentive to develop new medicines for neglected diseases. PMID:27140982

  14. The Commercial Market For Priority Review Vouchers.

    Science.gov (United States)

    Ridley, David B; Régnier, Stephane A

    2016-05-01

    In 2007 the US Congress created the priority review voucher program to encourage the development of drugs for neglected diseases. Under the program, the developer of a drug that treats a neglected disease receives both a faster review of the drug by the Food and Drug Administration and a voucher for a faster review of a different drug. The developer can sell the voucher. We estimated the commercial value of the voucher using US sales of new treatments approved in the period 2007-09. A third of the commercial value of a voucher comes from capturing market share from competitors, nearly half from the value of earlier sales because of the expedited review, and less than a quarter from lengthening the time between approval and the launch of a generic competitor. We estimate that if only one priority review voucher is available in a year, it will be worth more than $200 million, but if four vouchers are available, the value could fall below $100 million. Congress should be cautious about expanding the voucher program, because increasing the number of vouchers sharply decreases the expected price. Lower voucher prices could undermine the incentive to develop new medicines for neglected diseases.

  15. TB and HIV Therapeutics: Pharmacology Research Priorities

    Directory of Open Access Journals (Sweden)

    Kelly E. Dooley

    2012-01-01

    Full Text Available An unprecedented number of investigational drugs are in the development pipeline for the treatment of tuberculosis. Among patients with tuberculosis, co-infection with HIV is common, and concurrent treatment of tuberculosis and HIV is now the standard of care. To ensure that combinations of anti-tuberculosis drugs and antiretrovirals are safe and are tested at doses most likely to be effective, selected pharmacokinetic studies based on knowledge of their metabolic pathways and their capacity to induce or inhibit metabolizing enzymes of companion drugs must be conducted. Drug interaction studies should be followed up by evaluations in larger populations to evaluate safety and pharmacodynamics more fully. Involving patients with HIV in trials of TB drugs early in development enhances the knowledge gained from the trials and will ensure that promising new tuberculosis treatments are available to patients with HIV as early as possible. In this review, we summarize current and planned pharmacokinetic and drug interaction studies involving investigational and licensed tuberculosis drugs and antiretrovirals and suggest priorities for tuberculosis-HIV pharmacokinetic, pharmacodynamic, and drug-drug interaction studies for the future. Priority studies for children and pregnant women with HIV and tuberculosis co-infection are briefly discussed.

  16. Public Health Challenges and Priorities for Kazakhstan

    Directory of Open Access Journals (Sweden)

    Altyn Aringazina

    2012-11-01

    Full Text Available The Republic of Kazakhstan is one of the largest and fastest growing post-Soviet economies in Central Asia. Despite recent improvements in health care in response to Kazakhstan 2030 and other state-mandated policy reforms, Kazakhstan still lags behind other members of the Commonwealth of Independent States of the European Region on key indicators of health and economic development. Although cardiovascular diseases are the leading cause of mortality among adults, HIV/AIDS, tuberculosis, and blood-borne infectious diseases are of increasing public health concern. Recent data suggest that while Kazakhstan has improved on some measures of population health status, many environmental and public health challenges remain. These include the need to improve public health infrastructure, address the social determinants of health, and implement better health impact assessments to inform health policies and public health practice. In addition, more than three decades after the Declaration of Alma-Ata, which was adopted at the International Conference on Primary Health Care convened in Kazakhstan in 1978, facilitating population-wide lifestyle and behavioral change to reduce risk factors for chronic and communicable diseases, as well as injuries, remains a high priority for emerging health care reforms and the new public health. This paper reviews the current public health challenges in Kazakhstan and describes five priorities for building public health capacity that are now being developed and undertaken at the Kazakhstan School of Public Health to strengthen population health in the country and the Central Asian Region.

  17. Increasing throughput of multiplexed electrical bus in pipe-lined architecture

    Science.gov (United States)

    Asaad, Sameh; Brezzo, Bernard V; Kapur, Mohit

    2014-05-27

    Techniques are disclosed for increasing the throughput of a multiplexed electrical bus by exploiting available pipeline stages of a computer or other system. For example, a method for increasing a throughput of an electrical bus that connects at least two devices in a system comprises introducing at least one signal hold stage in a signal-receiving one of the two devices, such that a maximum frequency at which the two devices are operated is not limited by a number of cycles of an operating frequency of the electrical bus needed for a signal to propagate from a signal-transmitting one of the two devices to the signal-receiving one of the two devices. Preferably, the signal hold stage introduced in the signal-receiving one of the two devices is a pipeline stage re-allocated from the signal-transmitting one of the two devices.

  18. Analysis of bus width and delay on a fully digital signum nonlinearity chaotic oscillator

    KAUST Repository

    Mansingka, Abhinav S.

    2012-07-29

    This paper introduces the first fully digital implementation of a 3rd order ODE-based chaotic oscillator with signum nonlinearity. A threshold bus width of 12-bits for reliable chaotic behavior is observed, below which the system output becomes periodic. Beyond this threshold, the maximum Lyapunov exponent (MLE) is shown to improve up to a peak value at 16-bits and subsequently decrease with increasing bus width. The MLE is also shown to gradually increase with number of introduced internal delay cycles until a peak value at 14 cycles, after which the system loses chaotic properties. Introduced external delay cycles are shown to rotate the attractors in 3-D phase space. Bus width and delay elements can be independently modulated to optimize the system to suit specifications. The experimental results of the system show low area and high performance on a Xilinx Virtex 4 FPGA with throughput of 13.35 Gbits/s for a 32-bit implementation.

  19. Calculation of Flexible Bus-Bars Electrodynamic Stability with Application of Implicit Scheme

    Directory of Open Access Journals (Sweden)

    Y. G. Panamarenka

    2008-01-01

    Full Text Available A numerical method for calculation of open-air substations’ flexible bus-bars dynamic at short-circuit has been improved on equations of a flexible elastic string with application of an implicit scheme. On the basis of the numerical method a computer program FLEBUS for calculation of substations’ flexible bus-bars dynamic at short-circuit has been developed. An approbation and an estimation of calculation result reliability have been carried out in accordance with the program while using experimental data. On the basis of the obtained information it is possible to assert that the developed program is an independent tool for calculation of electrodynamic stability of substations’ flexible bus-bars.

  20. Fiber optic data bus space experiment on board the microlectronics and photonics test bed (MPTB)

    Science.gov (United States)

    Dale, Cheryl J.; Marshall, Paul W.; de la Chapelle, Michael; Fritz, Martin E.; LaBel, Kenneth A.

    1995-05-01

    The Microelectronics and Photonics Test Bed (MPTB) is a space experiment which will evaluate the performance of components and sybsystems of important new technologies is advance of their deployment of future spacecraft. Devices aboard MPTB will monitor the environment, and the radiation effects data obtained on components will be compared to ground tests and predictions. We present a description of the proposed high performance fiber optic data bus (FODB) experiment for MPTB which will feature the newly available 200 Mbps Boeing STAR-FODB hardware which is designed for space applications. This bus uses a passive star architecture and implements a Linear Token Passing Bus (LTPB) standard. The existence of extensive ground radiation test results for the STAR-FODB will enable high confidence predicition of its on-orbit performance to be made prior to launch.

  1. Bus Access Optimization for Distributed Embedded Systems Based on Schedulability Analysis

    DEFF Research Database (Denmark)

    Pop, Paul; Eles, Petru; Peng, Zebo

    2000-01-01

    We present an approach to bus access optimization and schedulability analysis for the synthesis of hard real-time distribution embedded systems. The communication model is based on a time-triggered protocol. We have developed an analysis for the communication delays proposing four different messa...... scheduling policies over a time-triggered communication channel. Optimization strategies for the bus access scheme are developed, and the four approaches to message scheduling are compared using extensive experiments.......We present an approach to bus access optimization and schedulability analysis for the synthesis of hard real-time distribution embedded systems. The communication model is based on a time-triggered protocol. We have developed an analysis for the communication delays proposing four different message...

  2. Steering Stability of a Bus Powered by Natural Gas While Braking

    Directory of Open Access Journals (Sweden)

    Ivan Ivković

    2011-03-01

    Full Text Available The use of natural gas as bus propellant presupposes the application of a driving unit adjusted to the use of natural gas in addition to the application of a corresponding gas facility. The first part of the paper describes the distinguishing features related to the storage of compressed natural gas tanks as the main carriers of additional mass due to the use of this energy substance for the propulsion of buses, as well as their effect on the structural features of vehicles. The second part of the paper covers the formulation and analysis of differential equations in terms of the steering system’s stability, and the equations depict the motion of the natural gas bus with its structural features, according to the defined models for instances of bus braking with locked front, rear and all wheels.

  3. Implemented Wavelet Packet Tree based Denoising Algorithm in Bus Signals of a Wearable Sensorarray

    Science.gov (United States)

    Schimmack, M.; Nguyen, S.; Mercorelli, P.

    2015-11-01

    This paper introduces a thermosensing embedded system with a sensor bus that uses wavelets for the purposes of noise location and denoising. From the principle of the filter bank the measured signal is separated in two bands, low and high frequency. The proposed algorithm identifies the defined noise in these two bands. With the Wavelet Packet Transform as a method of Discrete Wavelet Transform, it is able to decompose and reconstruct bus input signals of a sensor network. Using a seminorm, the noise of a sequence can be detected and located, so that the wavelet basis can be rearranged. This particularly allows for elimination of any incoherent parts that make up unavoidable measuring noise of bus signals. The proposed method was built based on wavelet algorithms from the WaveLab 850 library of the Stanford University (USA). This work gives an insight to the workings of Wavelet Transformation.

  4. Evacuated FM08 Fuses Carry a Sustained Arc in a Bus over 75 VDC

    Science.gov (United States)

    Leidecker, Henning; Slonaker, J.

    1999-01-01

    The FM08 style fuse is specified to interrupt an overcurrent of up to 300 A in a bus of up to 125 VDC, but this applies only when its barrel is filled with air. When placed into a space-grade vacuum, the FM08 style fuse exhausts its air within a year. Then, the probability of an enduring arc is high for all ratings when the bus is above 75 VDC, and the overcurrent is large. The arc endures until something else interrupts the current. The fuse can violently eject metal vapor or other material during the sustained arcing. The evacuated FM08 does not develop a sustained arc when interrupted in a bus of 38 VDC or less, at least when there is little inductance in the circuit. This is consistent with its successful use in many spacecraft having buses in the range 24 to 36 volts.

  5. 微型计算机PCI总线浅析%On Microcomputer PCI Bus

    Institute of Scientific and Technical Information of China (English)

    张宝菊; 孙景瑞; 刘艳

    2001-01-01

    较系统地分析了PCI总线的定义、分类及特点,论述了PCI总线的读写时序及总线仲裁问题,并将PCI总线应用在图象处理等方面,解决了数据通量的瓶颈问题.%This article analyses the definition,classification andpeculiarity of PCI bus systematically. And it expounds the problem of reading and writing proc ession and arbiitration of PCI bus. Further more, the PCI bus has been used in the im age treatment and any other fields,solving the difficult problem of data flux.

  6. IEEE 1394/firewire a low cost, high speed, digital serial bus

    Energy Technology Data Exchange (ETDEWEB)

    Gaunt, R.

    1997-05-01

    Does the world need yet another 1/0 bus standard? If you need fast and cheap serial video communication, then the answer is yes. As technology advances, so too must data transport mechanisms advance. You can`t expect RS-232 to support real-time digital video, and if you can`t afford expensive professional serial video interfaces, (such as Sony`s Serial Digital Interface), Firewire may be a good solution. IEEE 1394, or commonly known as Firewire, is a general purpose serial bus that meets many of the 1/0 needs of today`s video and multimedia developers. For those of you who only read the first paragraph, here`s Firewire in a nutshell: It provides a guaranteed transfer rate of 10OMbps or 20OMbps of digital data (such as video direct from camera to computer), over an inexpensive, non-proprietary serial bus. Here is a list of its features.

  7. Research on Integration of Coal Mine Monitoring and Control System with Field Bus Control System

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    According to the construction of current coal mine monitoring and control systems in China, the paper proposes three kinds of applicable schemes of integrating PLC and DCS systems with field bus technology to digitize the system and to improve the flexibility and extent of the system. Essentially, the paper introduces the integration of FCS on I/O layers. Based on a real coal mine safety-monitoring and control system applied with a CAN field bus, the major technology of system relays and extensions is discussed. We believe that one of the most applicable methods is currently replacing the connection between function-stations and field-sensors with a CAN bus on I/O layers for system integration.

  8. Design of belt conveyor electric control device based on CC-link bus

    Science.gov (United States)

    Chen, Goufen; Zhan, Minhua; Li, Jiehua

    2016-01-01

    In view of problem of the existing coal mine belt conveyor is no field bus communication function, two levels belt conveyor electric control system design is proposed based on field bus. Two-stage belt conveyor electric control system consists of operation platform, PLC control unit, various sensors, alarm device and the water spraying device. The error protection is realized by PLC programming, made use of CC-Link bus technology, the data share and the cooperative control came true between host station and slave station. The real-time monitor was achieved by the touch screen program. Practical application shows that the system can ensure the coalmine production, and improve the automatic level of the coalmine transport equipment.

  9. Risk Factors for Near Miss Incident among Long Distance Bus Drivers in Malaysia

    Directory of Open Access Journals (Sweden)

    Nik Nor Ronaidi NIK MAHDI

    2015-10-01

    Full Text Available Background: Road traffic accident is a worldwide public health issue that has its highest impact on low and middle income countries including Malaysia. Many previous studies concerned on the causality of the actual accidents and little attention were given to near miss incidents. Hence, the current study was designed to determine the prevalence and associated factors for near miss incident among long distance bus drivers in Malaysia.Methods: A cross sectional study was conducted among 517 long distance bus drivers. Data were collected using interview-guided translated and validated Pittsburgh Sleep Quality Index and Manchester Driver Behaviour questionnaire. Multiple logistic regression analysis was performed to determine the significant factors for near miss incident among long distance bus drivers in Malaysia.Results: The prevalence of near miss incident among long distance bus drivers was 37.5% (95% CI: 33.5, 41.8. The significant associated factors for near miss incident were younger age group (ORadj : 1.99; 95% CI: 1.32, 3.01, longer distance travelled per day (ORadj : 2.34; 95% CI: 1.52, 3.60, sleep disturbances (ORadj : 1.74; 95% CI: 1.19, 2.54 and errors in driving behaviour (ORadj : 1.31; 95% CI: 1.23, 1.39.Conclusion: Self-reported near miss incidents were relatively high among long distance bus drivers in Malaysia. This issue should be taken seriously and preventive action should consider the significant human factors such as younger age group, errors in driving behaviours, sleep disturbances as well as occupational factors like distance travelled per day. Keywords: Road traffic accident, Near miss, Bus drivers, Malaysia 

  10. A Feeder-Bus Dispatch Planning Model for Emergency Evacuation in Urban Rail Transit Corridors

    Science.gov (United States)

    Wang, Yun; Yan, Xuedong; Zhou, Yu; Zhang, Wenyi

    2016-01-01

    The mobility of modern metropolises strongly relies on urban rail transit (URT) systems, and such a heavy dependence causes that even minor service interruptions would make the URT systems unsustainable. This study aims at optimally dispatching the ground feeder-bus to coordinate with the urban rails’ operation for eliminating the effect of unexpected service interruptions in URT corridors. A feeder-bus dispatch planning model was proposed for the collaborative optimization of URT and feeder-bus cooperation under emergency situations and minimizing the total evacuation cost of the feeder-buses. To solve the model, a concept of dummy feeder-bus system is proposed to transform the non-linear model into traditional linear programming (ILP) model, i.e., traditional transportation problem. The case study of Line #2 of Nanjing URT in China was adopted to illustrate the model application and sensitivity analyses of the key variables. The modeling results show that as the evacuation time window increases, the total evacuation cost as well as the number of dispatched feeder-buses decrease, and the dispatched feeder-buses need operate for more times along the feeder-bus line. The number of dispatched feeder-buses does not show an obvious change with the increase of parking spot capacity and time window, indicating that simply increasing the parking spot capacity would cause huge waste for the emergent bus utilization. When the unbalanced evacuation demand exists between stations, the more feeder-buses are needed. The method of this study will contribute to improving transportation emergency management and resource allocation for URT systems. PMID:27676179

  11. 76 FR 28947 - Bus Testing: Calculation of Average Passenger Weight and Test Vehicle Weight, and Public Meeting...

    Science.gov (United States)

    2011-05-19

    ..., 2011 (76 FR 13580). Furthermore, due to the complexity of the issues proposed in the NPRM, FTA is..., FTA published an NPRM in the Federal Register (76 FR 13850) proposing to amend its bus testing... Federal Transit Administration 49 CFR Part 665 RIN 2132-AB01 Bus Testing: Calculation of Average...

  12. Bus crash severity in the United-States: The role of driver behavior, service type, road factors and environmental conditions

    DEFF Research Database (Denmark)

    Kaplan, Sigal; Prato, Carlo Giacomo

    Recent years have witnessed a growing interest in improving bus safety operations worldwide. While in the United States buses are considered relatively safe, the number of bus accidents is far from being negligible, triggering the introduction of the Motor-coach Enhanced Safety Act of 2011.The cu...

  13. ABB i-bus EIB智能酒店灯光控制系统设计方案

    Institute of Scientific and Technical Information of China (English)

    华卫智能设备

    2007-01-01

    @@ i-bus系统介绍 欧洲安装总线(EIB,European Instlallation Bus)在亚洲称为电气安装总线(Electrical Installation Bus),是电气布线领域使用范围最广的行业规范和产品标准.

  14. Evaluating a GPS-Based Transportation Device to Support Independent Bus Travel by People with Intellectual Disability

    Science.gov (United States)

    Davies, Daniel K.; Stock, Steven E.; Holloway, Shane; Wehmeyer, Michael L.

    2010-01-01

    We examined the utility of a PDA-based software system with integrated GPS technology for providing location-aware visual and auditory prompts to enable people with intellectual disability to successfully navigate a downtown bus route. Participants using the system were significantly more successful at completing a bus route than were people in a…

  15. Experiences with formal engineering: model-based specification, implementation and testing of a software bus at Neopost

    NARCIS (Netherlands)

    Sijtema, M.; Belinfante, A.; Stoelinga, M.I.A.; Marinelli, L.; Salaün, G.; Schätz, B.

    2014-01-01

    We report on the actual industrial use of formal methods during the development of a software bus. During an internship at Neopost Inc., of 14 weeks, we developed the server component of a software bus, called the XBus, using formal methods during the design, validation and testing phase: we modeled

  16. Risk factors associated with bus accident severity in the United States: A generalized ordered logit model

    DEFF Research Database (Denmark)

    Kaplan, Sigal; Prato, Carlo Giacomo

    2012-01-01

    that accident severity increases: (i) for young bus drivers under the age of 25; (ii) for drivers beyond the age of 55, and most prominently for drivers over 65 years old; (iii) for female drivers; (iv) for very high (over 65 mph) and very low (under 20 mph) speed limits; (v) at intersections; (vi) because...... of 2011. Method: The current study investigates the underlying risk factors of bus accident severity in the United States by estimating a generalized ordered logit model. Data for the analysis are retrieved from the General Estimates System (GES) database for the years 2005–2009. Results: Results show...

  17. Research and design on a kind of CASE environment architectural style based on ToolBus

    Institute of Scientific and Technical Information of China (English)

    Guo Bing; Shen Yan; Xie Jun; Wang Yong; Xiong Guangze

    2005-01-01

    Because CASE (computer aided software engineering) environment is a kind of complex system software, its software architecture is very important. From the viewpoint of software architecture, this paper first presents TBus architectural style, which is a kind of CASE environment architectural style based on ToolBus, then describes the architectural model and system's behavior in formal method, researches and analyzes the corresponding tool structural model. Last the paper implements a TBus architectural instance-LambdaBridge, which proves the validity of ToolBus and TBus architectural styles.

  18. Converter Power Density Increase using Low Inductive Integrated DC-link Capacitor/Bus

    DEFF Research Database (Denmark)

    Trintis, Ionut; Franke, Toke; Rannested, Bjørn;

    2015-01-01

    The power losses in switching devices have a direct effect on the maximum converter power. For a voltage source converter, the DC-link bus has a major influence on the power loss and safe operating area of the power devices. The Power Ring Film CapacitorTM integrated with an optimized bus structu...... has a measured inductance of around 5 nH. That allows the converter to switch with low turn-off losses, and allows the safe operation at higher dc-link voltages. This paper investigates the power transfer limits of a ShowerPower® cooled power stack....

  19. Simplified extension of the LSI-11 Q-Bus for a high energy laser control application

    International Nuclear Information System (INIS)

    Antares, a large, experimental laser fusion facility under construction at Los Alamos National Laboratory in New Mexico, is controlled by a network of PDP-11 minicomputers and microprocessors. The remote nodes of the Antares control network are based on an LSI-11/2 microcomputer interfaced to an STD Bus. This machine interface or MI forms the intelligent process controller located directly adjacent to the many diverse laser subsystem devices. The STD Bus, linked to the LSI-11/2 microcomputer, offers a standardized, cost effective means for the development of the specialized interface functions required for the high energy laser environment

  20. Mobile Encounters: Bus 5A as a cross-cultural meeting place

    DEFF Research Database (Denmark)

    Koefoed, Lasse Martin; Simonsen, Kirsten; Christensen, Mathilde Dissing

    2016-01-01

    The paper explores modes of encounters in the everyday practice of bus travel. Particularly, it addresses cross-cultural encounters located in the tension between familiarity and difference, between inclusion and exclusion. The paper is located in contemporary thoughts, approaching public transport...... not only as a moving device but also as a social arena. Furthermore, the bus is simultaneously perceived as a public space, at once composite, contradictory and heterogeneous, and as a meeting place involving ‘Throwntogetherness’. The encounters analysed are bodily, emotional charged and outspoken meetings...

  1. Study on Ultracapacitors Parameter Design and Control Strategy of Electric Bus

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    Based on the analysis of ultracapacitors efficiency and vehicle driving character, three conditions restricting the ultracapacitors charge/discharge time are derived. The study focuses on ultracapacitors specific design rules decided by charge/discharge time and how to integrate with battery packs and converter through ultracapacitors' voltage and current double regulators. Through BFC6100-EV electric bus test, it is shown that the proposed method and control strategy are feasible and the system can effectively improve the bus dynamic performance and ability to receive braking energy effectively.

  2. Realization and optimization of bus bar current transducers based on Hall effect sensors

    Science.gov (United States)

    Blagojević, Marjan; Jovanović, Uglješa; Jovanović, Igor; Mančić, Dragan; Popović, Radivoje S.

    2016-06-01

    In this paper the realization and optimization of two coreless open-loop bus bar current transducers based on a Hall effect sensor are presented. Two types of bus bar are evaluated: flat rectangular and rectangular with a restrictive region in the middle. Both realized transducers are capable of measuring AC and DC currents up to 300 A and 10 kHz frequency with nonlinearity less than 0.3% in the entire range. Several methods for resolving issues with the skin effect and stray magnetic fields are presented along with the experimental test results. Some of the presented methods are novel and have never been evaluated.

  3. Six Common Mistakes in Conservation Priority Setting

    Science.gov (United States)

    Game, Edward T; Kareiva, Peter; Possingham, Hugh P

    2013-01-01

    Abstract A vast number of prioritization schemes have been developed to help conservation navigate tough decisions about the allocation of finite resources. However, the application of quantitative approaches to setting priorities in conservation frequently includes mistakes that can undermine their authors’ intention to be more rigorous and scientific in the way priorities are established and resources allocated. Drawing on well-established principles of decision science, we highlight 6 mistakes commonly associated with setting priorities for conservation: not acknowledging conservation plans are prioritizations; trying to solve an ill-defined problem; not prioritizing actions; arbitrariness; hidden value judgments; and not acknowledging risk of failure. We explain these mistakes and offer a path to help conservation planners avoid making the same mistakes in future prioritizations. Seis Errores Comunes en la Definición de Prioridades de Conservación Resumen Se ha desarrollado un vasto número de esquemas de priorización para ayudar a que la conservación navegue entre decisiones difíciles en cuanto a la asignación de recursos finitos. Sin embargo, la aplicación de métodos cuantitativos para la definición de prioridades en la conservación frecuentemente incluye errores que pueden socavar la intención de sus autores de ser más rigurosos y científicos en la manera en que se establecen las prioridades y se asignan los recursos. Con base en los bien establecidos principios de la ciencia de la decisión, resaltamos seis errores comúnmente asociados con la definición de prioridades para la conservación: no reconocer que los planes de conservación son priorizaciones; tratar de resolver un problema mal definido; no priorizar acciones; arbitrariedad; juicios de valor ocultos y no reconocer el riesgo de fracasar. Explicamos estos errores y ofrecemos un camino para que planificadores de la conservación no cometan los mismos errores en priorizaciones

  4. Application of DD6180S city bus field bus technology%DD6180S城市客车总线技术应用

    Institute of Scientific and Technical Information of China (English)

    董秀芳; 王日新

    2011-01-01

    Emphatically introduced the CAN network composition of Huanghai DD6180S articulated city bus, combine with vehicle electric sub-control system,introduce the design of CAN circuit,expound the function definition of CAN control module interface in bus electric control system and connection to vehicle device.%着重介绍了黄海DD6180S铰接城市客车CAN总线网络构成,结合整车电器分控系统,介绍了CAN总线电路设计,阐述了CAN总线在客车电器控制系统中控制模块接口功能定义及与车辆设备连接。

  5. Application of ABB i-bus(R)EIB/KNX in Commercial Plaza%ABB i-bus(R)EIB/KNX在商业广场中的应用

    Institute of Scientific and Technical Information of China (English)

    张全林; 杜乐

    2008-01-01

    简要介绍了ABB i-bus(R)EIB/KNX智能建筑控制系统的基本原理及特点,并通过ABB i-bus(R)系统在西安骡马市商业步行街的应用,阐述了该系统在智能照明控制方面的功能、设备特点及优势.并通过该智能照明控制系统在安装前后电费开支的理论计算值分析,比较了采用该系统的节能效果.

  6. Assessment on the occupational exposure of urban public bus drivers to bioaccessible trace metals through resuspended fraction of settled bus dust

    Energy Technology Data Exchange (ETDEWEB)

    Gao, Peng [State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, No. 73 Huanghe Road, Nangang District, Harbin 150090 (China); Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA 01003 (United States); Liu, Sa [Environmental Health Sciences Division, School of Public Health, University of California, Berkeley, CA, 94720-7360 (United States); Ye, Wenyuan [Department of Chemical Engineering, KU Leuven, Willem de Croylaan 46, B-3001 Heverlee (Belgium); Lin, Nan; Meng, Ping [State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, No. 73 Huanghe Road, Nangang District, Harbin 150090 (China); Feng, Yujie, E-mail: yujief@hit.edu.cn [State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, No. 73 Huanghe Road, Nangang District, Harbin 150090 (China); Zhang, Zhaohan; Cui, Fuyi; Lu, Binyu [State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, No. 73 Huanghe Road, Nangang District, Harbin 150090 (China); Xing, Baoshan [Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA 01003 (United States)

    2015-03-01

    Limited information is available on the bioaccessible fraction of trace metals in the resuspended fraction of settled bus dust in order to estimate bus drivers ' occupational exposure. In this study, 45 resuspended fraction of settled dust samples were collected from gasoline and compressed natural gas (CNG) powered buses and analyzed for trace metals and their fraction concentrations using a three-step sequential extraction procedure. Experimental results showed that zinc (Zn) had the greatest bioaccessible fraction, recorded as an average of 608.53 mg/kg, followed in order of decreasing concentration by 129.80 mg/kg lead (Pb), 56.77 mg/kg copper (Cu), 34.03 mg/kg chromium (Cr), 22.05 mg/kg nickel (Ni), 13.17 mg/kg arsenic (As) and 2.77 mg/kg cadmium (Cd). Among the three settled bus dust exposure pathways, ingestion was the main route. Total exposure hazard index (HIt) for non-carcinogenic effect trace metals was lower than the safety level of 1. The incremental lifetime cancer risk (ILCR) for drivers was estimated for trace metal exposure. Pb and Ni presented relatively high potential risks in the non-carcinogenic and potentially carcinogenic health assessment for all drivers. ILCR was in the range of 1.84E − 05 to 7.37E − 05 and 1.74E − 05 to 6.95E − 05 for gasoline and CNG buses, respectively. - Highlights: • As, Cd and Ni had relatively higher bioaccessibility and mobility in the resuspended fraction of settled bus dust. • Bioaccessible metal concentrations were higher in gasoline-fueled buses than those in CNG-fueled buses. • The carcinogenic risk probabilities to drivers were around the acceptable level.

  7. Assessment on the occupational exposure of urban public bus drivers to bioaccessible trace metals through resuspended fraction of settled bus dust

    International Nuclear Information System (INIS)

    Limited information is available on the bioaccessible fraction of trace metals in the resuspended fraction of settled bus dust in order to estimate bus drivers ' occupational exposure. In this study, 45 resuspended fraction of settled dust samples were collected from gasoline and compressed natural gas (CNG) powered buses and analyzed for trace metals and their fraction concentrations using a three-step sequential extraction procedure. Experimental results showed that zinc (Zn) had the greatest bioaccessible fraction, recorded as an average of 608.53 mg/kg, followed in order of decreasing concentration by 129.80 mg/kg lead (Pb), 56.77 mg/kg copper (Cu), 34.03 mg/kg chromium (Cr), 22.05 mg/kg nickel (Ni), 13.17 mg/kg arsenic (As) and 2.77 mg/kg cadmium (Cd). Among the three settled bus dust exposure pathways, ingestion was the main route. Total exposure hazard index (HIt) for non-carcinogenic effect trace metals was lower than the safety level of 1. The incremental lifetime cancer risk (ILCR) for drivers was estimated for trace metal exposure. Pb and Ni presented relatively high potential risks in the non-carcinogenic and potentially carcinogenic health assessment for all drivers. ILCR was in the range of 1.84E − 05 to 7.37E − 05 and 1.74E − 05 to 6.95E − 05 for gasoline and CNG buses, respectively. - Highlights: • As, Cd and Ni had relatively higher bioaccessibility and mobility in the resuspended fraction of settled bus dust. • Bioaccessible metal concentrations were higher in gasoline-fueled buses than those in CNG-fueled buses. • The carcinogenic risk probabilities to drivers were around the acceptable level

  8. A Rule-Based Energy Management Strategy for a Plug-in Hybrid School Bus Based on a Controller Area Network Bus

    OpenAIRE

    Jiankun Peng; Hao Fan; Hongwen He; Deng Pan

    2015-01-01

    This paper presents a rule-based energy management strategy for a plug-in hybrid school bus (PHSB). In order to verify the effectiveness and rationality of the proposed energy management strategy, the powertrain and control models were built with MATLAB/Simulink. The PHSB powertrain model includes an engine model, ISG (integrated started and generator) model, drive motor model, power battery packs model, driver model, and vehicle longitudinal dynamics model. To evaluate the controller area ne...

  9. Priorities for Future Research on Planetary Dunes

    Science.gov (United States)

    Titus, Timothy N.; Lancaster, Nick; Hayward, Rose; Fenton, Lori; Bourke, Mary

    2008-11-01

    Planetary Dunes Workshop: A Record of Climate Change; Alamogordo, New Mexico, 28 April to 2 May 2008; Landforms and deposits created by the dynamic interactions between granular material and airflow (eolian processes) occur on several planetary bodies, including Earth, Mars, Titan, and Venus. To address many of the outstanding questions within planetary dune research, a workshop was organized by the U.S. Geological Survey, the Planetary Science Institute, the Desert Research Institute, and the Search for Extraterrestrial Intelligence Institute and was sponsored by the Lunar and Planetary Institute and the Jet Propulsion Laboratory. The workshop brought together researchers from diverse backgrounds, ranging from image analysis and modeling to terrestrial analog studies. The group of approximately 45 international researchers had intense discussions in an attempt to identify the most promising approaches to understanding planetary dune systems. On the basis of these discussions, the group identified the following 10 priorities for future planetary dune research.

  10. Trends and priorities in internal audit

    Directory of Open Access Journals (Sweden)

    Victoria STANCIU

    2016-09-01

    Full Text Available The status of the internal audit as an important pillar for corporate governance is recognized unanimously; however, this status is gained through a continuous and joined effort of all internal auditors and by a clear and solid vision of the internal audit function’s development, designed by the chief of internal audit. This status recognizes the internal audit’s support for the achievement of company objectives and the improvement of risk management and it also requires continuous quantitative accumulations in the work of internal auditors. From this perspective, the author’s attention focused on the main risks and priorities that the internal audit is facing as they are reflected by international studies and surveys. The conclusions emphasized by the author’s research may be considered important milestones for the improvement of the internal audit function in Romania and for its solid connection to the realities and problems the companies are confronting with.

  11. [Qualitative research: which priority for scientific journals?].

    Science.gov (United States)

    Rodella, Stefania

    2016-04-01

    Quantitative and qualitative approaches in scientific research should not be looked at as separate or even opposed fields of thinking and action, but could rather offer complementary perspectives in order to build appropriate answers to increasingly complex research questions. An open letter recently published by the BMJ and signed by 76 senior academics from 11 countries invite the editors to reconsider their policy of rejecting qualitative research on the grounds of low priority and challenge the journal to develop a proactive, scholarly and pluralistic approach to research that aligns with its stated mission. The contents of the letter, the many voices raised by almost fifty rapid responses and the severe but not closed responses of the editors outline a stimulating debate and hopefully prelude some "change in emphasis", ensuring that all types of research relevant to the mission of the BMJ (as well as other core journals) are considered for publication and providing an evolving landmark for scientific and educational purposes. PMID:27093324

  12. Priorities and standards in pharmacogenetic research.

    Science.gov (United States)

    Need, Anna C; Motulsky, Arno G; Goldstein, David B

    2005-07-01

    The current enthusiasm for pharmacogenetics draws much of its inspiration from the relatively few examples of polymorphisms that have marked and seemingly clinically relevant effects on drug response. In this regard, pharmacogenetic research has paralleled the study of human disease, which has enjoyed success in identifying mutations underlying mendelian conditions. Progress in deciphering the genetics of complex diseases, involving the interaction of multiple genes with each other and with the environment has been considerably less successful. In most instances, drug responses will probably also prove to be complex, influenced by both the environment and multiple genetic factors. For pharmacogenetics to deliver on its potential, this complexity will need to be recognized and accommodated, both in basic research and in clinical application of pharmacogenetics. As the attention of researchers begins to shift toward more systematic pharmacogenetic investigations, we suggest some priorities and standards for pharmacogenetic research.

  13. Multiprocessor Priority Ceiling Emulation for Safety-Critical Java

    DEFF Research Database (Denmark)

    Strøm, Torur Biskopstø; Schoeberl, Martin

    2015-01-01

    Priority ceiling emulation has preferable properties on uniprocessor systems, such as avoiding priority inversion and being deadlock free. This has made it a popular locking protocol. According to the safety-critical Java specication, priority ceiling emulation is a requirement for implementations....... However, implementing the protocol for multiprocessor systemsis more complex so implementations might perform worse than non-preemptive implementations. In this paper we compare two multiprocessor lock implementations with hardware support for the Java optimized processor: non-preemptive locking...

  14. Priority setting and health policy and systems research

    Directory of Open Access Journals (Sweden)

    Bennett Sara C

    2009-12-01

    Full Text Available Abstract Health policy and systems research (HPSR has been identified as critical to scaling-up interventions to achieve the millennium development goals, but research priority setting exercises often do not address HPSR well. This paper aims to (i assess current priority setting methods and the extent to which they adequately include HPSR and (ii draw lessons regarding how HPSR priority setting can be enhanced to promote relevant HPSR, and to strengthen developing country leadership of research agendas. Priority setting processes can be distinguished by the level at which they occur, their degree of comprehensiveness in terms of the topic addressed, the balance between technical versus interpretive approaches and the stakeholders involved. When HPSR is considered through technical, disease-driven priority setting processes it is systematically under-valued. More successful approaches for considering HPSR are typically nationally-driven, interpretive and engage a range of stakeholders. There is still a need however for better defined approaches to enable research funders to determine the relative weight to assign to disease specific research versus HPSR and other forms of cross-cutting health research. While country-level research priority setting is key, there is likely to be a continued need for the identification of global research priorities for HPSR. The paper argues that such global priorities can and should be driven by country level priorities.

  15. A comparison of core degradation phenomena in the CORA, QUENCH, Phébus SFD and Phébus FP experiments

    Energy Technology Data Exchange (ETDEWEB)

    Haste, T., E-mail: tim.haste@irsn.fr [Institut de Radioprotection et de Sûreté Nucléaire, IRSN, BP 3, F-13115 St. Paul-lez-Durance Cedex (France); Steinbrück, M., E-mail: martin.steinbrueck@kit.edu [Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen (Germany); Barrachin, M., E-mail: marc.barrachin@irsn.fr [Institut de Radioprotection et de Sûreté Nucléaire, IRSN, BP 3, F-13115 St. Paul-lez-Durance Cedex (France); Luze, O. de, E-mail: olivier.de-luze@irsn.fr [Institut de Radioprotection et de Sûreté Nucléaire, IRSN, BP 3, F-13115 St. Paul-lez-Durance Cedex (France); Grosse, M., E-mail: mirco.grosse@kit.edu [Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen (Germany); Stuckert, J., E-mail: juri.stuckert@kit.edu [Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen (Germany)

    2015-03-15

    Highlights: • The results of the experiments CORA, QUENCH and Phébus SFD/FP are summarised. • All phenomena expected up to melt movement to the lower head are shown consistently. • Separate-effect tests performed at KIT and IRSN aid improve their modelling. • Data from the integral tests help independent validation of new and improved models. • The improved codes will help reduce uncertainties in safety-critical areas for core degradation. - Abstract: Over the past 20 years, integral fuel bundle experiments performed at IRSN Cadarache, France (Phébus-SFD and Phébus FP – fission heated) and at Karlsruhe Institute of Technology, Germany (CORA and QUENCH – electrically heated), accompanied by separate-effect tests, have provided a wealth of detailed information on core degradation phenomena that occur under severe accident conditions, relevant to such safety issues as in-vessel retention of the core, recovery of the core by water reflood, hydrogen generation and fission product release. These data form an important basis for development and validation of severe accident analysis codes such as ASTEC (IRSN/GRS, EC) and MELCOR (USNRC/SNL, USA) that are used to assess the safety of current and future reactor designs, so helping to reduce the uncertainty associated with such code predictions. Following the recent end of the Phébus FP project, it is appropriate now to compare the core degradation phenomena observed in these four major experimental series, indicating the main conclusions that have been drawn. This covers subjects such as early phase degradation up to loss of rod-like geometry (all the series), late phase degradation and the link between fission product release and core degradation (Phébus FP), oxidation phenomena (all the series), reflood behaviour (CORA and QUENCH), as well as particular topics such as the effects of control rod material and fuel burn-up on core degradation. It also outlines the separate-effects experiments performed to

  16. NEW MULTIANUAL FINANCIAL FRAMEWORK: PRIORITIES FOR THE EUROPEAN UNION, PRIORITIES FOR ROMANIA

    Directory of Open Access Journals (Sweden)

    ROXANA-DANIELA PĂUN

    2013-05-01

    Full Text Available This article proposes a brief foray into the situation of the European economy, but especially of the banking system of the Member States affected differently by the current world economic crisis, or recession, but especially for a detailed analysis of the New Multiannual Financial Framework for the period 2014-2020, with the priorities which appear to be distinct for the EU and for Romania. After a comparative analysis of European regulations on the agreements of the previous financial negotiated for the period 2014-2020, and Delors I (1988-1992, Delors II (1993-1999, the Agenda 2000 (2000-2006 and multiannual financial framework (2007- 2013 and ultimately the provisions of the Treaty of Lisbon (which convert multiannual financial framework in an essential act from a legal point of view; express personal opinions on Romania’s priorities and on the challenges and perspectives in the actual European and global context.

  17. 77 FR 5295 - Over-the-Road Bus Accessibility Program Announcement of Project Selections

    Science.gov (United States)

    2012-02-02

    ... by Section 3038 of the Transportation Equity Act for the 21st Century (TEA-21). The OTRB... FTA's Transportation Electronic Awards Management System (TEAM) for the projects identified in Tables... TRANSPORTATION Federal Transit Administration Over-the-Road Bus Accessibility Program Announcement of...

  18. High voltage bus and auxiliary heater control system for an electric or hybrid vehicle

    Science.gov (United States)

    Murty, Balarama Vempaty

    2000-01-01

    A control system for an electric or hybrid electric vehicle includes a vehicle system controller and a control circuit having an electric immersion heater. The heater is electrically connected to the vehicle's high voltage bus and is thermally coupled to a coolant loop containing a heater core for the vehicle's climate control system. The system controller responds to cabin heat requests from the climate control system by generating a pulse width modulated signal that is used by the control circuit to operate the heater at a duty cycle appropriate for the amount of cabin heating requested. The control system also uses the heater to dissipate excess energy produced by an auxiliary power unit and to provide electric braking when regenerative braking is not desirable and manual braking is not necessary. The control system further utilizes the heater to provide a safe discharge of a bank of energy storage capacitors following disconnection of the battery or one of the high voltage connectors used to transmit high voltage operating power to the various vehicle systems. The control circuit includes a high voltage clamping circuit that monitors the voltage on the bus and operates the heater to clamp down the bus voltage when it exceeds a pre-selected maximum voltage. The control system can also be used to phase in operation of the heater when the bus voltage exceeds a lower threshold voltage and can be used to phase out the auxiliary power unit charging and regenerative braking when the battery becomes fully charged.

  19. What is a clean bus? Object conflicts in the greening of urban transit

    Directory of Open Access Journals (Sweden)

    David Hess

    2007-03-01

    Full Text Available Object conflicts—struggles over the design, definition, and diffusion of technologies—are analyzed to understand the changing history of the greening of bus technologies in the United States from the late 1980s to 2006. Conflicts are examined over the controversy between compressed natural gas (CNG and emissions-controlled diesel (ECD buses in four fields: regulations, research on emissions differences, fleet-purchase decisions, and political mobilizations from bus users and environmental justice groups. Given rapidly changing scientific research on emissions and health effects and rapidly changing bus technology, controversies tend not to stabilize or close for long. In general, the trend has been for some of the largest city bus fleets to reverse pro-CNG decisions in favor of ECD. A framework for the analysis of “object conflicts” is developed to elucidate the factors behind the choices between ECD and CNG and to provide a general model for thinking about technology politics and sustainability.

  20. 49 CFR 571.220 - Standard No. 220; School bus rollover protection.

    Science.gov (United States)

    2010-10-01

    .... S3. Applicability. This standard applies to school buses. S4. Requirements. When a force in Newtons.... S1. Scope. This standard establishes performance requirements for school bus rollover protection. S2... procedures. Each vehicle shall be capable of meeting the requirements of S4. when tested in accordance...

  1. Bus.py: A GridLAB-D Communication Interface for Smart Distribution Grid Simulations

    Energy Technology Data Exchange (ETDEWEB)

    Hansen, Timothy M.; Palmintier, Bryan; Suryanarayanan, Siddharth; Maciejewski, Anthony A.; Siegel, Howard Jay

    2015-07-03

    As more Smart Grid technologies (e.g., distributed photovoltaic, spatially distributed electric vehicle charging) are integrated into distribution grids, static distribution simulations are no longer sufficient for performing modeling and analysis. GridLAB-D is an agent-based distribution system simulation environment that allows fine-grained end-user models, including geospatial and network topology detail. A problem exists in that, without outside intervention, once the GridLAB-D simulation begins execution, it will run to completion without allowing the real-time interaction of Smart Grid controls, such as home energy management systems and aggregator control. We address this lack of runtime interaction by designing a flexible communication interface, Bus.py (pronounced bus-dot-pie), that uses Python to pass messages between one or more GridLAB-D instances and a Smart Grid simulator. This work describes the design and implementation of Bus.py, discusses its usefulness in terms of some Smart Grid scenarios, and provides an example of an aggregator-based residential demand response system interacting with GridLAB-D through Bus.py. The small scale example demonstrates the validity of the interface and shows that an aggregator using said interface is able to control residential loads in GridLAB-D during runtime to cause a reduction in the peak load on the distribution system in (a) peak reduction and (b) time-of-use pricing cases.

  2. Design of interference-imaging spectrum data transmission Card Based on PCI Bus

    Institute of Scientific and Technical Information of China (English)

    Ma,Dongmei; Gao,Wei; Wang,Xinfeng

    2005-01-01

    Take the interference-imaging spectrometer for example, the paper analyses the characters of the spectrum-forming signals and their timing sequence. Then inspects the key technology in the interference-imaging spectrum data transmission system, and indicates a design for the system-which is based on computer PCI bus with CPLD technique imbedded. The system's circuitry and function are also presented.

  3. The Effectiveness of External Bus Speaker Systems for Persons Who Are Visually Impaired.

    Science.gov (United States)

    Wiener, William R.; Ponchillia, Paul; Joffee, Elga; Rutberg-Kuskin, Judith; Brown, John

    2000-01-01

    Two studies examined the effectiveness of external-speaker announcements in identifying incoming buses to 21 adults with visual impairments, including the placement of external speakers, the ability to understand simultaneous bus announcements, and the speech enhancement of announcements. Announcements could be heard above ambient traffic sounds…

  4. 76 FR 13580 - Bus Testing; Calculation of Average Passenger Weight and Test Vehicle Weight

    Science.gov (United States)

    2011-03-14

    ... Federal Register (74 FR 51083) that incorporated brake performance and emissions tests into FTA's bus... Weight Per Person (See, ``Passenger Weight and Inspected Vessel Stability Requirements: Final Rule, 75 FR... Transportation (44 FR 11032). Executive Order 12866 requires agencies to regulate in the ``most...

  5. Evolution of a 100 Mpbps fiber optic serial data bus for aerospace applications

    Science.gov (United States)

    Uhlhorn, R. W.; Geeslin, A. E.; Otten, T. H.

    Future aircraft and spacecraft will incorporate high speed data buses connecting avionics subsystems immersed in an electromagnetically hostile environment. The benefits of using fiber optics as the data transfer medium of choice for such systems are well known. Anticipating the use of high speed fiber optic data buses in avionics systems of the future, a company-sponsored program was initiated to explore component-through-system aspects of the technology. This paper describes the evolutionary steps in the development of a 100 Mbps Serial Fiber Optic Data Bus for aerospace applications. Beginning with a discussion of several possible protocols and applications, the development of each major subsystem is discussed. A token passing protocol is used to maximize bus efficiency. Development hardware supporting a 32 terminal network including an LED transmitter, APD receiver and user interface equipment, as well as test results from evaluation of the bus receivers and transmitters in a bus signaling environment, are described. Testing methods are discussed and test results are presented.

  6. Life-cycle assessment of diesel, natural gas and hydrogen fuel cell bus transportation systems

    Science.gov (United States)

    Ally, Jamie; Pryor, Trevor

    The Sustainable Transport Energy Programme (STEP) is an initiative of the Government of Western Australia, to explore hydrogen fuel cell technology as an alternative to the existing diesel and natural gas public transit infrastructure in Perth. This project includes three buses manufactured by DaimlerChrysler with Ballard fuel cell power sources operating in regular service alongside the existing natural gas and diesel bus fleets. The life-cycle assessment (LCA) of the fuel cell bus trial in Perth determines the overall environmental footprint and energy demand by studying all phases of the complete transportation system, including the hydrogen infrastructure, bus manufacturing, operation, and end-of-life disposal. The LCAs of the existing diesel and natural gas transportation systems are developed in parallel. The findings show that the trial is competitive with the diesel and natural gas bus systems in terms of global warming potential and eutrophication. Emissions that contribute to acidification and photochemical ozone are greater for the fuel cell buses. Scenario analysis quantifies the improvements that can be expected in future generations of fuel cell vehicles and shows that a reduction of greater than 50% is achievable in the greenhouse gas, photochemical ozone creation and primary energy demand impact categories.

  7. 49 CFR Appendix A to Part 665 - Tests To Be Performed at the Bus Testing Facility

    Science.gov (United States)

    2010-10-01

    .... When appropriate, Society of Automotive Engineers (SAE) test procedures and other procedures accepted... and Distortion Tests (1) A shakedown of the bus structure should be conducted by loading and unloading... structure. This test should be repeated a second time, and should be repeated up to one more time if...

  8. Re?bus disainivõistlus ehk noored innovaatorid bussirevolutsiooni otsinguil

    Index Scriptorium Estoniae

    2005-01-01

    2005. a. algul agentuuri APCI (Agence pour la Promotion de la Creation Industrielle) poolt korraldatud disainivõistlusest Re?bus. Eestist valiti 30 finalisti hulka büroo ZiZi & YoYo töö. Edukamad võistlustööd olid juuni algul väljas rahvusvahelise ühistranspordi assotsiatsiooni (UITP) 56. kongressil Roomas

  9. Connecticut Transit (CTTRANSIT) Fuel Cell Transit Bus: Second Evaluation Report and Appendices

    Energy Technology Data Exchange (ETDEWEB)

    Chandler, K.; Eudy, L.

    2009-05-01

    This report describes operations at Connecticut Transit (CTTRANSIT) in Hartford for one prototype fuel cell bus and three new diesel buses operating from the same location. The evaluation period in this report (January 2008 through February 2009) has been chosen to coincide with a UTC Power propulsion system changeout that occurred on January 15, 2008.

  10. Public perception related to a hydrogen hybrid internal combustion engine transit bus demonstration and hydrogen fuel

    International Nuclear Information System (INIS)

    Hydrogen has been widely considered as a potentially viable alternative to fossil fuels for use in transportation. In addition to price competitiveness with fossil fuels, a key to its adoption will be public perceptions of hydrogen technologies and hydrogen fuel. This paper examines public perceptions of riders of a hydrogen hybrid internal combustion engine bus and hydrogen as a fuel source

  11. Voltage Sag Mitigation in Eight Bus System using D-Statcom For Power Quality Improvement

    Directory of Open Access Journals (Sweden)

    P. Venkata Kishore

    2010-04-01

    Full Text Available This work deals with modeling and simulation of multi bus system using D-STATCOM. Voltage sag is increased by connecting a heavy load. The sag is mitigated using D-STATCOM. The circuit models and simulation results are presented. The Simulation results are compared with the analytical results.

  12. More than Just Fun and Games: BSG and Glo-Bus as Strategic Education Instruments

    Science.gov (United States)

    Karriker, Joy H.; Aaron, Joshua R.

    2014-01-01

    Simulations like the BSG and Glo-Bus allow students the opportunity to practice their integrated, strategic management skills in a relatively risk-free environment or "live case." We review these games and address their strengths, along with the challenges associated with their classroom application. Because of their sound designs and…

  13. Study on the Calculation Models of Bus Delay at Bays Using Queueing Theory and Markov Chain

    Directory of Open Access Journals (Sweden)

    Feng Sun

    2015-01-01

    Full Text Available Traffic congestion at bus bays has decreased the service efficiency of public transit seriously in China, so it is crucial to systematically study its theory and methods. However, the existing studies lack theoretical model on computing efficiency. Therefore, the calculation models of bus delay at bays are studied. Firstly, the process that buses are delayed at bays is analyzed, and it was found that the delay can be divided into entering delay and exiting delay. Secondly, the queueing models of bus bays are formed, and the equilibrium distribution functions are proposed by applying the embedded Markov chain to the traditional model of queuing theory in the steady state; then the calculation models of entering delay are derived at bays. Thirdly, the exiting delay is studied by using the queueing theory and the gap acceptance theory. Finally, the proposed models are validated using field-measured data, and then the influencing factors are discussed. With these models the delay is easily assessed knowing the characteristics of the dwell time distribution and traffic volume at the curb lane in different locations and different periods. It can provide basis for the efficiency evaluation of bus bays.

  14. Bus application of oxygen-enrichment technology and diesel-electric hybrid systems

    Energy Technology Data Exchange (ETDEWEB)

    Sekar, R.R.; Marr, W.W.

    1993-10-01

    The amendments to the Clean Air Act (CAA) mandate very strict limits on particulate, smoke, and other emissions from city buses. The use of alternative fuels, such as compressed natural gas (CNG) or methanol, can help transit operators, such as the Chicago Transit Authority (CTA), meet the mandated limits. However, the capital investment needed to convert the fueling infrastructure and buses is large, as is the expense of training personnel. If a {open_quotes}clean diesel{close_quotes} bus can be implemented with the help of oxygen-enrichment technology or a diesel-electric hybrid system, this large investment could be postponed for many years. The Regional Transportation Authority (RTA) initiated this project to evaluate the possibility of applying these technologies to CTA buses. Argonne National Laboratory (ANL) conducted a limited number of engine tests and computer analyses and concluded that both concepts are practical and will help in a {open_quotes}clean diesel{close_quotes} bus that can meet the mandated limits of the CAA amendments. The oxygen enrichment of combustion air depends on the availability of a compact and economical membrane separator. Because the technology for this critical component is still under development, it is recommended that an actual bus demonstration be delayed until prototype membranes are available. The hybrid propulsion system is ready for the demonstration phase, and it is recommended that the CTA and RTA commence planning for a bus demonstration.

  15. Alternative fuel options for urban bus application in the Netherlands: a comparative study

    NARCIS (Netherlands)

    Bleuanus, W.A.J.; Hartikka, T.S.; Lange, R. de; Ligterink, N.E.; Breunesse, R.T.; Baert, R.S.G.

    2008-01-01

    Today, a large number of urban areas in the Netherlands face significant local air quality problems. One source of this local pollution is road traffic and, in urban areas, public transport by city bus. For this reason, there is a lot of interest in different opportunities to lower the harmful emiss

  16. Bus drivers' exposure to bullying at work: an occupation-specific approach.

    Science.gov (United States)

    Glasø, Lars; Bele, Edvard; Nielsen, Morten Birkeland; Einarsen, Ståle

    2011-10-01

    The present study employs an occupation-specific approach to examine bus drivers' exposure to bullying and their trait anger, job engagement, job satisfaction and turnover intentions. A total of 1,023 bus drivers from a large public transport organization participated in the study. The findings show that bus driving can be a high risk occupation with regard to bullying, since 70% of the bus drivers had experienced one or more acts typical of bullying during the last six months. As many as 11% defined themselves as victims of bullying, 33% of whom (i.e. 3.6% of the total sample) see themselves as victims of frequent bullying. Colleagues were most frequently reported as perpetrators. Exposure to bullying was negatively related to job engagement and job satisfaction and positively related to turnover intentions. Job engagement and job satisfaction mediated the relationship between bullying and intention to leave, respectively. Trait anger had an interaction effect on the relationship between bullying and turnover intentions. This study indicates that workplace bullying has context-specific aspects that require increased use of context-specific policies and intervention methods. PMID:21605122

  17. Study on the Calculation Models of Bus Delay at Bays Using Queueing Theory and Markov Chain

    Science.gov (United States)

    Sun, Li; Sun, Shao-wei; Wang, Dian-hai

    2015-01-01

    Traffic congestion at bus bays has decreased the service efficiency of public transit seriously in China, so it is crucial to systematically study its theory and methods. However, the existing studies lack theoretical model on computing efficiency. Therefore, the calculation models of bus delay at bays are studied. Firstly, the process that buses are delayed at bays is analyzed, and it was found that the delay can be divided into entering delay and exiting delay. Secondly, the queueing models of bus bays are formed, and the equilibrium distribution functions are proposed by applying the embedded Markov chain to the traditional model of queuing theory in the steady state; then the calculation models of entering delay are derived at bays. Thirdly, the exiting delay is studied by using the queueing theory and the gap acceptance theory. Finally, the proposed models are validated using field-measured data, and then the influencing factors are discussed. With these models the delay is easily assessed knowing the characteristics of the dwell time distribution and traffic volume at the curb lane in different locations and different periods. It can provide basis for the efficiency evaluation of bus bays. PMID:25759720

  18. SunLine Transit Agency Fuel Cell Transit Bus: Fifth Evaluation Report (Report and Appendices)

    Energy Technology Data Exchange (ETDEWEB)

    Eudy, L.; Chandler, K.

    2009-08-01

    This report describes operations at SunLine Transit Agency for a prototype fuel cell bus and five compressed natural gas (CNG) buses. This is the fifth evaluation report for this site, and it describes results and experiences from October 2008 through June 2009. These results are an addition to those provided in the previous four evaluation reports.

  19. SunLine Transit Agency Fuel Cell Transit Bus: Fourth Evaluation Report (Report and Appendices)

    Energy Technology Data Exchange (ETDEWEB)

    Chandler, K.; Eudy, L.

    2009-01-01

    This report describes operations at SunLine Transit Agency for a prototype fuel cell bus and five new compressed natural gas (CNG) buses. This is the fourth evaluation report for this site, and it describes results and experiences from April 2008 through October 2008. These results are an addition to those provided in the previous three evaluation reports.

  20. Impact of a walking school bus program on children's active commuting to school and physical activity

    Science.gov (United States)

    Walking School Buses (WSB) are groups of students, led to and from school by adults, in which students are picked up at designated "bus stops". The impact of WSB programs on students' active commuting to school (walking/cycling to school, ACS), and moderate-to vigorous-physical activity (MVPA) has n...

  1. General purpose interface bus for personal computers used in wind tunnel data acquisition

    Science.gov (United States)

    Puram, Chith K.

    1993-01-01

    The use of the general purpose interface bus IEEE-488 to met the special requirements of wind tunnel testing involving PCs is discussed. The gearing of instrumentation to minimize test time, the choice of software to meet computer memory constraints, the use of graphics for improved use of tunnel run time, and the choice of data acquisition equipment to remove bottlenecks are addressed.

  2. Delay-Insensitive Synchronization on a Message-Passing Architecture with an Open Collector Bus

    NARCIS (Netherlands)

    Bekker, H.; Dijkstra, E.J.

    1996-01-01

    The performance of some algorithms, running on a message passing computer; is limited by the high latency of global communications. To increase the performance, a simple open collector bus, operated by delay insensitive programs running on each processor can be used. We illustrate this by an example

  3. Traffic signal design and simulation for vulnerable road users safety and bus preemption

    Science.gov (United States)

    Lo, Shih-Ching; Huang, Hsieh-Chu

    2015-01-01

    Mostly, pedestrian car accidents occurred at a signalized interaction is because pedestrians cannot across the intersection safely within the green light. From the viewpoint of pedestrian, there might have two reasons. The first one is pedestrians cannot speed up to across the intersection, such as the elders. The other reason is pedestrians do not sense that the signal phase is going to change and their right-of-way is going to be lost. Developing signal logic to protect pedestrian, who is crossing an intersection is the first purpose of this study. In addition, to improve the reliability and reduce delay of public transportation service is the second purpose. Therefore, bus preemption is also considered in the designed signal logic. In this study, the traffic data of the intersection of Chong-Qing North Road and Min-Zu West Road, Taipei, Taiwan, is employed to calibrate and validate the signal logic by simulation. VISSIM 5.20, which is a microscopic traffic simulation software, is employed to simulate the signal logic. From the simulated results, the signal logic presented in this study can protect pedestrians crossing the intersection successfully. The design of bus preemption can reduce the average delay. However, the pedestrian safety and bus preemption signal will influence the average delay of cars largely. Thus, whether applying the pedestrian safety and bus preemption signal logic to an intersection or not should be evaluated carefully.

  4. Implementation of Transaction Level AMBA Bus Models Using SystemC

    Institute of Scientific and Technical Information of China (English)

    He Zhen; Cao Yang; Zhang Jun-xin; Ma Qin-sheng

    2004-01-01

    This paper deals with how to implement AMBA bus transaction level modeling in SystemC. There are two main techniques used in the whole modeling process, which consist of starting the platform modeling at the transaction level and using the uniformed modeling language--System C. According to the concepts of interface, port and hierarchical channel introduced in SystemC 2.0, the system of master-channel (AMBA bus) slave is created as the architecture of the AMBA bus transaction level model, which can make it more extendable. The port and interface classes of the model that are prone to program are defined in accordance with the SoC hierarchical design methodology. In addition, method calls, not signal communication, are used between different modules in the model, so the higher-level abstraction is achieved and the simulation performance is improved. The AMBA bus transaction level model is analyzed and certified by simulation experiment, and proved to be completely compliant to the AMBA specification 2.0.

  5. Vulnerability of bus and truck drivers affected from vehicle engine noise

    Directory of Open Access Journals (Sweden)

    Naba Kumar Mondal

    2014-12-01

    Full Text Available The purpose of this study was to find out the vulnerability of bus and truck drivers due to constant exposure of vehicle-engine noise inside the vehicle cabin. Comparative results revealed that noise levels inside the cabin of buses and trucks were in the range of 88.6–102.4 dB and 87.95–103.4 dB, respectively. The health status of bus and truck drivers was assessed by measuring their systolic and diastolic pressure, pulse rate, BMI, digestion problem, hearing loss, vision problem, back pain and irritation. Paired t-test of the results revealed non-significant (p < 0.05 relation between systolic and diastolic pressure of both bus and truck drivers. The pulse rate of truck driver was significantly (p < 0.01 related with noise level inside the cabin of truck. The humidity level inside the cabin showed a positive relation with vehicle age (p < 0.01 and driving period (p < 0.01. This study clearly suggests that vehicle engine noise adversely affects the cardiovascular health of both bus and truck drivers.

  6. Minute ventilation of cyclists, car and bus passengers: an experimental study.

    NARCIS (Netherlands)

    Zuurbier, M.; Hoek, G.; van den Hazel, P.J.; Brunekreef, B.

    2009-01-01

    ABSTRACT: BACKGROUND: Differences in minute ventilation between cyclists, pedestrians and other commuters influence inhaled doses of air pollution. This study estimates minute ventilation of cyclists, car and bus passengers, as part of a study on health effects of commuters' exposure to air pollutan

  7. 公交车专用变速箱设计%Dedicated Bus Gearbox Design

    Institute of Scientific and Technical Information of China (English)

    冀勇彪

    2013-01-01

    Introduces the bus gearbox market demand and development prospect of domestic bus transmission, analyzes research status, in the bus transmission noise, sealing, manipulation of the special characteristics, analysis of bus control mechanism of gearbox, transmission mechanism failure mode, combinative company is real, in the structural design measures, complete a five-speed gearbox design of buses.%  介绍了公交车变速箱的市场需求及发展前景,分析了国内公交车变速箱的研究状况,针对公交车变速箱对噪音、密封性、操纵性的特殊特性,结合公司实际,对变过相关体结构,助力器及其与缓速器的接口进行了设计,完成五档公交车变速箱的设计。

  8. Final priority; Rehabilitation Training: Rehabilitation Long-Term Training program--rehabilitation specialty areas. Final priority.

    Science.gov (United States)

    2014-07-23

    The Assistant Secretary for Special Education and Rehabilitative Services announces a priority under the Rehabilitation Training: Rehabilitation Long-Term Training program. The Assistant Secretary may use this priority for competitions in fiscal year (FY) 2014 and later years in order to fund any of the rehabilitation specialty areas listed in this notice. The specific rehabilitation specialty areas to be funded in a given year will be listed in a notice inviting applications. This priority is designed to ensure that the Department funds high-quality rehabilitation programs in the following nine rehabilitation specialty areas of national need: Rehabilitation Administration (84.129C); Rehabilitation Technology (84.129E); Vocational Evaluation and Work Adjustment (84.129F); Rehabilitation of Individuals Who Are Mentally Ill (84.129H); Rehabilitation Psychology (84.129J); Rehabilitation of Individuals Who are Blind or Have Vision Impairments (84.129P); Rehabilitation of Individuals Who are Deaf or Hard of Hearing (84.129Q); Job Development and Job Placement Services (84.129R); and Comprehensive System of Personnel Development (84.129W). These programs must meet rigorous standards in order to provide rehabilitation professionals the training and qualifications necessary to meet the current challenges facing State vocational rehabilitation (VR) agencies and related agencies and assist individuals with disabilities in achieving high-quality employment outcomes.

  9. Made of modules - the Setra versatile bus; Aus Modulen kombiniert - die Baureihe Setra-Kombibus

    Energy Technology Data Exchange (ETDEWEB)

    Hamsten, B.; Stangl, G. [EvoBus GmbH, Stuttgart (Germany)

    1997-07-01

    Setra is in the process of replacing its most successful bus 200 UL which, with its many versions, was for more than ten years leader in the market saegment of intercity public service buses. The development of the new bus family, the `Kombibus` Kombi means versatile, was started from scratch. The entirely new bus is made from modules, and the consistency with which this idea was carried through is the real innovation. Not only are driveline and running gear standardised modules - this has been common practice with buses for a long time - but also the body in white, the components and fittings of the body, the equipment, and the many extras. With only four different cross sections through the passenger compartment a wide spectrum of buses is covered, ranging from a plain low-floor bus to the luxurious travel coach. The `Kombibus` permits the operator of a bus fleet to combine modules to make exactly the bus he requires without the need for a new type. At the same time, the manufacturer has gained the advantage of being able to serve a larger market segment with fewer parts and components, at lower cost and with a shorter delivery time. (orig.) [Deutsch] Setra ist dabei, die erfolgreiche Baureihe 200, die seit mehr als zehn Jahren Markftuehrer in dem Segment Ueberlandlinienbus ist, durch die von Grund auf neu entwickelte Familie `Kombibus` abzuloesen. Innovativ am `Kombibus` ist die Konsequenz, mit der das Modulkonzept auf alle Komponenten angewendet wurde. Nicht nur Triebstrang und Fahrwerk wurden danach festgelegt, sondern auch die Karosserie, ihr Rohbau ebenso wie ihre Ausruestung und das gesamte Zubehoer. Mit nur vier verschiedenen Querschnittsformen durch den Fahrgastraum wird ein Spektrum abgedeckt, welches vom nuechternen Niederflur- bis hin zum komfortablen Reisebus reicht. Den Betreibern von Omnibussen bietet der `Kombibus` die Moeglichkeit, sich den genau auf ihre Anforderungen zugeschnittenen Bus zusammenzustellen. Fuer den Hersteller ergibt sich der

  10. Final priority; National Institute on Disability and Rehabilitation Research--Disability and Rehabilitation Research Projects and Centers Program. Final priority.

    Science.gov (United States)

    2014-07-25

    The Assistant Secretary for Special Education and Rehabilitative Services announces a priority under the Disability and Rehabilitation Research Projects and Centers Program administered by the National Institute on Disability and Rehabilitation Research (NIDRR). Specifically, we announce a priority for a Disability and Rehabilitation Research Project (DRRP) on Improving Methods of Evaluating Return on Investment (ROI) for the State Vocational Rehabilitation Services Program (VR Program). The Assistant Secretary may use this priority for competitions in fiscal year (FY) 2014 and later years. We take this action to focus research attention on an area of national need. We intend for the priority to contribute to improved employment outcomes for individuals with disabilities.

  11. Ranking of severe accident research priorities

    Energy Technology Data Exchange (ETDEWEB)

    Schwinges, B. [Gesell Anlagen and Reaktorsicherheit GRS mbH, D-50667 Cologne (Germany); Journeau, C. [CEA Cadarache, DEN STRI LMA, F-13115 St Paul Les Durance (France); Haste, T. [Paul Scherrer Inst, NES LTH, OVGA 312, CH-5232 Villigen (Switzerland); Meyer, L.; Tromm, W. [Forschungszentrum Karlsruhe, D-76021 Karlsruhe (Germany); Trambauer, K. [GRS mbH, Forschungsgelande, D-85748 Garching (Germany)

    2010-07-01

    The objectives of the SARNET network are to define common research programmes in the field of severe accidents and to develop common computer tools and methodologies for safety assessment in this field. To reach these objectives, one of the work packages, named 'Severe Accident Research Priorities' (SARP), aimed at reviewing and reassessing the priorities of research issues as a basis to harmonize and to re-orient research programmes, to define new ones, and to close - if possible - resolved issues on a common basis. The work was performed in close collaboration with 8 participating institutions, led by GRS, representing technical safety organisations, industry and utilities (IRSN, CEA, EDF, FZK, GRS, KTH, TUS, VTT). This action made use notably of (1) the outcomes of the EURSAFE project in the 5. Framework Programme, i. e. the Phenomena Identification and Ranking Tables (PIRT) on severe accidents, (2) the results of the validation and benchmarking activities on ASTEC, (3) the results of reactor calculations carried out in the other SARNET tasks, and (4) the outcome of the research performed in the three thematic sub-domains of SARNET (corium, containment and source term). The main outcome of EURSAFE was a list of 21 topics which included recommendations for experimental programmes and code developments. This list formed the basis of the work in SARP. Also the methodology applied in EURSAFE to consider both the risk potential and the severe accident issues where large uncertainties still subsist was adopted. The analyses of the progress of research and development activities considered whether (1) any research issue was resolved due to reduction of uncertainties or gain of scientific insights, (2) any new issue had to be added to the list of needed research, (3) any new process or phenomenon had to be included in the general PIRT list taking into account the safety relevance and the lack of knowledge, and (4) any new accident management program has to be

  12. Give first priority to publicity and education.

    Science.gov (United States)

    1991-12-01

    Commentary is provided on the implementation of China's Three Priorities in strengthening family planning (FP) for population control. The Three Priorities issued by the Party Central Committee of China and the State Council refers to the emphasis on 1) "publicity and education rather than economic disincentives," 2) contraception rather than induced abortion," and 3) "day to day management work rather than irregular campaigns." The expectations are that leaders at all levels should be active, steadfast, patient, and down to earth. Improvements in management lead to more constant, scientific, and systematic FP. Family planning should be voluntary. The achievement is not just population control but better relations with the Party and cadres, which leads to social stability and unity. The directives have been well thought out and are to be resolutely carried out. It was stressed in April 1991 by the General-Secretary and the Premier that coercion would not be tolerated in FP work. The confidence of the masses must be relied upon. The success of FP is guaranteed with the practice of these directives. Constancy of education and publicity is the key work. There should be a strong population awareness and the awareness of available resources/capita, and also an understanding and firm command of the principles and methods of better implementation. FP has an effect both on the fundamental interests of the country and immediate personal interests. The task is expected to be difficult because traditional ideas are still strong. The country is just at the beginning stages of socialism. A social security system is not a reality and farmer's educational attainment is not high. Productivity in the rural areas is underdeveloped. There is a contradiction between childbearing intentions of some farmers and the government requirements of FP. In order for the people to understand government FP policy, painstaking and meticulous education must be carried out to explain why FP is

  13. 3.2Gbps multi-channel optical backplane bus demonstrator using photopolymer volume gratings

    Science.gov (United States)

    Bi, Hai; Choi, Jinho; Jiang, Wei; Han, Xuliang; Ellis, Jonathan; Chen, Ray T.

    2007-02-01

    A 3-slot optical backplane bus demonstrator based on glass substrate with photopolymer volume gratings array (PVGA) on top surface is built to allow 16 channels of data to be broadcast from central slot to two daughter slots or uploaded from any daughter slot to central slot. VCSELs and photodetectors packaged in the form of TO-46 can are assembled on top of each PVG and interleaved to reduce the crosstalk to below noise level. By carefully aligning the fabrication system, the incident angle deviation from Bragg condition is reduced to below 0.1° to maximize optical power delivery. The orientation and period of hologram fringes are uniform in the active area by collimating recording beams. Above 4.8Gbps aggregated data transmission is successfully demonstrated using the multi-channel system. Three computer mother boards using FPGA are made to verify the data transmission among the slots. Interface boards between the FPGA boards and optical transceivers are designed and fabricated to separate the implementation of digital layer and optical layer. Single channel transmissions with 3.2Gbps and even 10Gbps data rate are also tested with above 100uW input power, showing the potential to improve the total two-way bandwidth to above 102.4Gbps. Alignment tolerance of the optical interconnect system is investigated theoretically and experimentally. By analyzing the diffractive characteristics, the bandwidth limit of the optical layer is determined to be in the order of Terahertz. Design and fabrication issues are discussed for future optical backplane bus to make terahertz bandwidth into reality. Based on the experiments for Bit-interleaved Optical Backplane bus and Multi-channel optical backplane bus demonstrators, theoretical analysis of the bandwidth limit of the optical backplane bus using photopolymer volume gratings has been carried out.

  14. 20 CFR 1010.200 - What is priority of service?

    Science.gov (United States)

    2010-04-01

    ... 20 Employees' Benefits 3 2010-04-01 2010-04-01 false What is priority of service? 1010.200 Section 1010.200 Employees' Benefits OFFICE OF THE ASSISTANT SECRETARY FOR VETERANS' EMPLOYMENT AND TRAINING... of Service § 1010.200 What is priority of service? (a) As defined in section 2(a) of the JVA (38...

  15. 34 CFR 642.34 - Priorities for funding.

    Science.gov (United States)

    2010-07-01

    ... 34 Education 3 2010-07-01 2010-07-01 false Priorities for funding. 642.34 Section 642.34 Education Regulations of the Offices of the Department of Education (Continued) OFFICE OF POSTSECONDARY EDUCATION....34 Priorities for funding. (a) The Secretary, after consultation with regional and State...

  16. 75 FR 47284 - Secretary's Priorities for Discretionary Grant Programs

    Science.gov (United States)

    2010-08-05

    ... of necessary reforms, the Secretary proposes priorities in three key areas: advancing key cradle-to.... Advancing Key Cradle-to-Career Educational Reforms Proposed Priority 1--Improving Early Learning Outcomes... materials, (b) assessments aligned with the standards, (c) teacher and principal preparation...

  17. 75 FR 41405 - Energy Priorities and Allocations System Regulations

    Science.gov (United States)

    2010-07-16

    ... infrastructure means any systems and assets, whether physical or cyber-based, so vital to the United States that... Part 217 RIN 1901-AB28 Energy Priorities and Allocations System Regulations AGENCY: Department of..., DOE Energy Priorities and Allocations System (EPAS) regulations. 10 CFR part 216 implements...

  18. 7 CFR 1.77 - Assignment of priorities.

    Science.gov (United States)

    2010-01-01

    ... Information will retain the right to cancel priorities when the producer at any stage violates the provisions... company's and/or individual producer's story treatment of the subject matter, but no such priority shall... writing by the producer of the stipulations in § 1.75(b). The U.S. Department of Agriculture will hold...

  19. 36 CFR 1192.75 - Priority seating signs.

    Science.gov (United States)

    2010-07-01

    ... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false Priority seating signs. 1192... Light Rail Vehicles and Systems § 1192.75 Priority seating signs. (a) Each vehicle shall contain sign(s... mobility aid seating locations are provided, signs shall indicate the location and advise other...

  20. 36 CFR 1192.27 - Priority seating signs.

    Science.gov (United States)

    2010-07-01

    ... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false Priority seating signs. 1192.27 Section 1192.27 Parks, Forests, and Public Property ARCHITECTURAL AND TRANSPORTATION BARRIERS... Buses, Vans and Systems § 1192.27 Priority seating signs. (a) Each vehicle shall contain sign(s)...