Sample records for beltways

  1. Allegheny County Beltway System Street Centerlines

    Allegheny County / City of Pittsburgh / Western PA Regional Data Center — Authoritative dataset of the beltway system in Allegheny County. The system was developed to help motorists navigate through Allegheny County on low-traffic roads....

  2. Information feedback strategy for beltways in intelligent transportation systems

    Li, Wen-Ting; Li, Jian-Qing; Chen, Bo-Kui; Huang, Xin; Wang, Zhen


    As an important part of the Intelligent Transportation System (ITS), the information feedback strategy has drawn more and more scholars' attention. A variety of feedback strategies are proposed to improve the traffic efficiency. These strategies are based on simple route scenarios, but most route scenarios are always complex in reality. In this letter, based on a complex beltway scenario, we propose a new traffic information feedback strategy called Beltway Feedback Strategy (BFS). The simulation results show that the BFS can effectively improve the transportation ability of beltways.

  3. Atmospheric and surface water pollution interpretation in the Gdansk beltway impact range by the use of multivariate analysis

    Dubiella-Jackowska, Aleksandra; Polkowska, Zaneta; Kudlak, Blazej; Namiesnik, Jacek [Chemical Faculty, Department of Analytical Chemistry, Gdansk University of Technology, Gdansk (Poland); Astel, Aleksander [Environmental Chemistry Research Unit, Institute of Biology and Environmental Protection, Pomeranian Academy, Slupsk (Poland); Staszek, Wojciech [Faculty of Physical Geography and Environmental Management, University of Gdansk, Gdansk (Poland)


    The present study deals with the application of the hierarchical cluster analysis and non-parametric tests in order to interpret the Gdansk Beltway impact range. The data set represents concentration values for major inorganic ions (Na{sup +}, NH{sub 4}{sup +}, K{sup +}, Mg{sup 2+}, Ca{sup 2+}, F{sup -}, Cl{sup -}, NO{sub 3}{sup -}, and SO{sub 4}{sup 2-}) as well as electrolytic conductivity and pH measured in various water samples [precipitation, throughfall water, road runoff, and surface water (drainage ditches, surface water reservoirs, and spring water)] collected in the vicinity of the beltway. Several similarity groups were discovered both in the objects and in the variables modes according to the water sample. In the majority of cases clear anthropogenic (fertilizers usage and transport, road salting in winter) and semi-natural (sea salt aerosols, erosion of construction materials) impacts were discovered. Spatial variation was discovered for road runoff samples and samples collected from surface water reservoirs and springs. Surprisingly no clear seasonal variability was discovered for precipitation chemistry, while some evidences for existing of summer and winter specific chemical profile was discovered for road runoff samples. In general, limited range of the Gdansk Beltway impact was proven. (Abstract Copyright [2010], Wiley Periodicals, Inc.)

  4. Border to Beltway: A Formative Field Exchange Program between Two Community Colleges for Non-Traditional Students

    Villalobos, J. I.; Bentley, C.


    Community College students account for over 40% of all undergraduates in the US as well as the majority of minority students attending undergraduate courses. With issues in the geosciences such as; being the least diverse of all major STEM fields, an increasing number of retiring geoscientists, and a projected geoscience job growth not matching the number of geoscience graduates, the geoscience community needs to look at community colleges as a solution to these issues. A key factor for students entering and excelling in the geoscience is the opportunity for formative undergraduate field experiences. Formative field experiences go beyond one-day field excursions by incorporating field projects, interactive learning, and community building between participants in regions students are unfamiliar with. Unfortunately, these types of formative experiences often require logistics and resources that are not available or known to community college faculty. In order to build a framework for implementing formative field experiences by community colleges a two-week "field exchange" between two community colleges with different geological, social, and cultural settings was conducted. Supported with a supplemental grant from NSF, the "Border to Beltway" program provided 11 students from El Paso Community College and another 13 from Northern Virginia Community College with two one-week regional geology field trips: First, to West Texas in March 2014, and second, to the mid-Atlantic region in May 2014. Students were selected based on academic standing, non-traditional (minority, female, over 35, veteran) status, and interest in geology. Qualitative data collected from participants regarding the implementation of the field exchange include; student perception of geology before and after exchange, challenges students faced in the field or traveling for the first time, quantity and quality of projects given, and working with others from different backgrounds. Data regarding planning

  5. 成都第三绕城高速公路与多条铁路交叉方案分析%Route Scheme of Third Beltway Around Chengdu Across Several Railways



    The south part of the Third Beltway around Chengdu induces some interferences with several railways and highways at Yongfeng Village, Meishan. For reasonably crossing these proposed, being built or already built railways and expressways, the optimization of route scheme and a series of bridge-crossing measures need analyzing. The paper proposes three route schemes to cross railways. By setting double crush barriers and foreign matter detectors, strengthening the supervision on the process of design and construction, applying reasonable construction techniques and other means, the normal operation of high-speed railways under bridges are ensured.%成都第三绕城高速公路南段在眉山市永丰村与多条铁路、高速公路发生交叉干扰。为合理跨越这些拟建、在建、已建的铁路及高速公路,需要对路线方案的优化及一系列桥梁跨越措施进行分析。拟定了三种路线方案与铁路交叉,通过在桥梁上部结构设置双重防撞护栏、异物监测等装置,同时加强设计及施工过程中的监管,采用合理的施工工艺等手段,确保了桥下高速铁路的正常运行。

  6. 23 CFR Appendix A to Part 658 - National Network-Federally-Designated Routes


    ... and the north city limits of San Leandro. (Excepted under 23 CFR 658.11(f)). Colorado No additional... approaches. (Excepted under 23 CFR 658.11(f).) Florida US 27 FL Turnpike Ext FL 84 Andytown. US 27 South Bay... truck ban on I-66 from I-495 Capital Beltway to the District of Columbia. (Excepted under 23 CFR...

  7. Monitoring ground subsidence in urban environments: M-30 tunnels under Madrid City (Spain

    Rubén Martínez Marín


    Full Text Available Big cities improvement usually requires the construction of large underground infrastructures, in order to ensure proper communication and optimize urban use. Monitoring ground subsidences is therefore one of the main challenges in changing urban environments. The "Madrid Río" project (2003-2008 is an effort to reclaim the riverfront land and improve the busy M-30 beltway that involved the construction of 7.93 km of tunnels underneath the southern center of Madrid City. This paper presents a remote-sensing approach to monitor ground subsidences induced by tunneling excavation.  The Persistent Scatterers Interferometry technique (PSI was used to estimate subsidence and displacement time series from Synthetic Aperture Radar images, acquired between August 2003 and April 2008 from ENVISAT.  Remote sensed results were compared to traditional extensometric measures, fitting adequately for selected sectors. Spatial analysis of displacements allowed evaluating impacts of tunneling on surrounding buildings and facilities, highlighting critical areas. The availability of a spatial distribution of displacements in a time series allowed analyzing longitudinal, cross-sectional and temporal dynamics. The main limitations during this work were the heterogeneous spatial distribution of Persistent Scatterers, the absence of measurement points in work areas, the threshold for velocity detection and low temporal resolution of ENVISAT images. Nevertheless, these limitations of DInSAR for monitoring infrastructures are overcome by actual satellites, being a complementary technique with an exceptional added value and temporal analysis capability.

  8. Lessons learned by southern states in designating alternative routes

    The purpose of this report is to discuss the ''lessons learned'' by the five states within the southem region that have designated alternative or preferred routes under the regulations of the Department of Transportation (DOT) established for the transportation of radioactive materials. The document was prepared by reviewing applicable federal laws and regulations, examining state reports and documents and contacting state officials and routing agencies involved in making routing decisions. In undertaking this project, the Southern States Energy Board hopes to reveal the process used by states that have designated alternative routes and thereby share their experiences (i.e., lessons learned) with other southern states that have yet to make designations. Under DOT regulations (49 CFR 177.826), carriers of highway route controlled quantities of radioactive materials (which include spent nuclear fuel and high-level waste) must use preferred routes selected to reduce time in transit. Such preferred routes consist of (1) an interstate system highway with use of an interstate system bypass or beltway around cities when available, and (2) alternate routes selected by a ''state routing agency.''

  9. Near the Blasting Construction Technology of Tunnel Control Residential Area%临近居民区隧道控制爆破施工技术



    The tunnel purple Hangzhou city(Zijingang Road, River Road)project is located between the Hangzhou Beltway and the West Lake scenic area, the urban “men, three vertical and five horizontal” fast road on the west side, a north-south, south of Pu Road, north to Tianmushan Road North Zijingang Road, across the board around to avoid the core area of West Lake. A North and south two North ramp, ramp near residential areas, during the construction, the controlled blasting technique.%杭州市紫之隧道(紫金港路—之江路)工程位于杭州绕城高速与西湖景区之间,市区“二环、三纵、五横”快速路网西侧,呈南北走向,南起之浦路,北至天目山路以北紫金港路,全线绕避西湖核心景区,设南北两个匝道,北匝道临近居民区,在施工时,采用控制爆破技术。

  10. Assessment of vertically-resolved PM10 from mobile lidar observations

    J.-C. Raut


    Full Text Available We investigate in this study the vertical PM10 distributions from mobile measurements carried out from locations along the Paris Peripherique (highly trafficked beltway around Paris, examine distinctions in terms of aerosol concentrations between the outlying regions of Paris and the inner city and eventually discuss the influence of aerosol sources, meteorology, and dynamics on the retrieved PM10 distributions. To achieve these purposes, we combine in situ surface measurements with active remote sensing observations obtained from a great number of research programs in Paris area since 1999. Two approaches, devoted to the conversion of vertical profiles of lidar-derived extinction coefficients into PM10, have been set up. A very good agreement is found between the theoretical and empirical methods with a discrepancy of 3%. Hence, specific extinction cross-sections at 355 nm are provided with a reasonable relative uncertainty lower than 12% for urban (4.5 m2 g−1 and periurban (5.9 m2 g−1 aersols, lower than 26% for rural (7.1 m2 g−1 aerosols, biomass burning (2.6 m2 g−1 and dust (1.1 m2 g−1 aerosols The high spatial and temporal resolutions of the mobile lidar (respectively 1.5 m and 1 min enable to follow the spatiotemporal variability of various layers trapping aerosols in the troposphere. Appropriate specific extinction cross-sections are applied in each layer detected in the vertical heterogeneities from the lidar profiles. The standard deviation (rms between lidar-derived PM10 at 200 m above ground and surface network stations measurements was ~14μg m−3. This difference is particularly ascribed to a decorrelation of mass concentrations in the first meters of the boundary layer, as highlighted through multiangular lidar observations. Lidar signals can be used to follow mass concentrations with an uncertainty lower than 25% above urban areas and provide useful information on PM10 peak forecasting that affect air quality.

  11. Social Movements Against Racist Police Brutality and Department of Justice Intervention in Prince George's County, Maryland.

    Hutto, Jonathan W; Green, Rodney D


    Racist police brutality has been systemic in Prince George's County, Maryland. The victims include African Americans, the mentally challenged, and immigrant populations, creating a complex and uneven public health impact. Three threads characterize the social movements and intervention since 1970. First, a significant demographic shift occurred as African Americans became the majority population in the late 1980s when the first Black county executive was elected in 1994. Despite the change in political leadership, police brutality remained rampant. Lower-income households located close to the District of Columbia and "inside the beltway" experienced the most police brutality. In 2001, The Washington Post revealed that between 1990 and 2000, Prince George's police shot and killed more citizens per officer than any of the 50 largest city and county law enforcement agencies in the country, 84 % of whom were black. Of the 147 persons shot during the 1990s, 12 were mentally and/or emotionally disturbed; 6 of these shootings were fatal. Second, resistance to police brutality emerged in a variety of political formations throughout the period, especially in the late 1990s. Sustained community pressure prompted the Department of Justice (DOJ) to open a civil rights investigation of the police department in November 2000. To avoid a potential federal lawsuit, the county leadership negotiated a memorandum of agreement (MOA) with the DOJ to enact policy reforms, part of which called for supplementing the departmental mobile crisis team, comprised of mental health care professionals, to respond to all cases involving mentally challenged citizens. Third, the incomplete process of change subsequent to the ending of DOJ oversight suggests a continued challenge to social movements opposing police brutality. This study focuses on the effectiveness of the MOA along with the activism of the People's Coalition for Police Accountability (PCPA) in reforming a culture of police brutality

  12. 基于云平台的交通视频检测数据优化研究%Data Optimization of Traffic Video Vehicle Detector Based on Cloud Platform

    程学庆; 刘星文; 李建海; 蒲云


    交通视频检测技术在智能交通领域应用广泛,成为当前交通信息采集的主要手段。但在恶劣天气条件下,视频车辆检测器采集的交通数据误差较大,难以准确反映路面实际状况。为解决此问题,本文提出基于不同气象能见度等级构建k型BP网络,对气象能见度低于10 km时的原始交通数据作预处理优化。分析了云计算在交通信息处理方面的优势,基于云计算平台实现了该模型的构建与推广。最后以成都绕城高速七里沟大桥定点观测得到的数据做样本进行实例分析,对比了该模型方法与传统处理方法的数据处理效果,得出了本文方法较传统方法先进的结论。%Traffic video detection technology is widely used in ITS and becomes the main form of transportation information collection. But in bad weather condition, the traffic data deviation is so large that it’s difficult to accurately reflect the traffic situation. To solve this problem,k -type BP neural network model is established based on different meteorological visibility level, then preprocess the data which collected in the meteorological visibility level below 10 km. It also analyzes the advantages of cloud computing in traffic information processing, realizes the construction and promotion of the model based on cloud computing platform. The superiority of the new model compared with the traditional method is validated by an example. Finally, an example is analyzed based on observatory date of Chengdu beltway Qiligou Bridge, compare the effectiveness of the proposed method and the traditional processing methods. The conclude shows that the proposed method is more advanced than the conventional methods.

  13. Genetic Engineering Workshop Report, 2010

    Allen, J; Slezak, T


    The Lawrence Livermore National Laboratory (LLNL) Bioinformatics group has recently taken on a role in DTRA's Transformation Medical Technologies (TMT) program. The high-level goal of TMT is to accelerate the development of broad-spectrum countermeasures. To achieve this goal, there is a need to assess the genetic engineering (GE) approaches, potential application as well as detection and mitigation strategies. LLNL was tasked to coordinate a workshop to determine the scope of investments that DTRA should make to stay current with the rapid advances in genetic engineering technologies, so that accidental or malicious uses of GE technologies could be adequately detected and characterized. Attachment A is an earlier report produced by LLNL for TMT that provides some relevant background on Genetic Engineering detection. A workshop was held on September 23-24, 2010 in Springfield, Virginia. It was attended by a total of 55 people (see Attachment B). Twenty four (44%) of the attendees were academic researchers involved in GE or bioinformatics technology, 6 (11%) were from DTRA or the TMT program management, 7 (13%) were current TMT performers (including Jonathan Allen and Tom Slezak of LLNL who hosted the workshop), 11 (20%) were from other Federal agencies, and 7 (13%) were from industries that are involved in genetic engineering. Several attendees could be placed in multiple categories. There were 26 attendees (47%) who were from out of the DC area and received travel assistance through Invitational Travel Orders (ITOs). We note that this workshop could not have been as successful without the ability to invite experts from outside of the Beltway region. This workshop was an unclassified discussion of the science behind current genetic engineering capabilities. US citizenship was not required for attendance. While this may have limited some discussions concerning risk, we felt that it was more important for this first workshop to focus on the scientific state of