云浮水泥厂索道存在的问题及解决措施

对云浮水泥厂索道存在的问题进行了分析论证，提出了解决措施，彻底解决了云浮索道技术和设备上存在的问题。     

管道输油设备维修中的问题及其对策

输油设备的完好率和利用率对原油成品油管道输送的经济性有直接影响，作者针对目前输油设备存在的重用轻养、重修轻改、维修技术力量薄弱等问题，提出了成立输油设备维修中心、维修技术和信息培训中心等解决的对策的措施，以提高管道输送设备的整体技术水平。     

RFID技术在仓库叉车设备定位中的应用

为适应高质量发展和节能减排的要求，企业越来越注重仓库管理精细化和精准化，进一步提出了对仓库中的叉车作业设备及人员的精细化管理需求，从而为货物在库流转提供更优化的路线方案规划。目前市场上常用的方法是在仓库内安装UWB定位读取设备，通过读取UWB定位标签来解决室内设备和人员的定位。但这种技术方案不仅成本高，而且施工复杂。通过大量的调查研究和试验，本文研究提出应用RFID技术的仓库设备定位解决方案。采取软件和硬件相结合，在满足仓库叉车设备定位需求的同时，整体建设方案的费用仅是市场UWB设备定位方案十分之一，有效实现了降本增效碳减排效果，同时，该方案具有施工简单，有非常强的应用推广价值。     

核电站核级仪表管阀件设计与应用研究

为促进核电仪表管阀件的设计,促进设备的国产化,对仪表管阀件在核电站中的设计与应用以及核电站用仪表管件设计的特殊性进行了分析,并结合工程设计经验、现场反馈情况及对照不同堆型项目的类比情况,介绍了目前核电机组仪表管件设计中的重点和难点问题并提出了改进方案。对核级管件国产化的现状进行了分析和展望。     

长输天然气管道放空气回收利用

目前国内长输天然气管道放空气通过放空火炬或者放空立管排放,造成了大量的资源浪费和环境污染。通过调研国内外长输天然气管道放空气回收利用现状,针对站场和阀室分别提出放空气回收利用方案,并进行了经济可行性分析。站场在设计时应考虑设置固定式放空气回收利用系统,投资回收期一般在25~46个月之间;阀室可以考虑设置移动式放空气回收利用系统并根据实际应用效果考虑是否推广。     

格-拉成品油管道技术改造试点工程回顾

介绍了格－拉（格尔木－拉萨）成品油管道6号泵站技术改造试点工程概况，输油工艺设计，主要设备与阀件选型及站控系统。分析了改造取得的成功之处，同时分析了存在的问题，并提出了改造的建议。     

交流变电站对管道电磁干扰缓解措施研究

为研究某交流变电站对邻近管道的电磁干扰影响,采用数值模拟的方法计算了变电站单相接地故障时管道的相关安全参数。针对接触电压超标的情况,应用软件比较了缓解方案,具体解决方法是将管道与阀室接地极通过固态去耦合器连接,再在管道与变电站并行的位置设置梯度控制线。     

往复式压缩机抽吸工况下储气库注采干线压降速率研究

管道出现泄漏时,截断阀能识别泄漏压降信号并进行截断。干线中存在往复式压缩机时,压缩机抽吸会在管道内产生压降,该压降信号与干线泄漏压降信号存在重复,有可能会引起截断阀的错误截断。以重庆相国寺储气库为例,分析往复式压缩机抽吸工况与管道泄漏工况压降速率的异同,为截断阀的准确截断提供参考依据。利用Pipeline Studio软件建立压缩机抽吸工况、管道泄漏工况仿真模型,得到了压缩机抽吸条件下输量、压缩比、阀室距压缩机的距离对阀室压降及持续时间的影响。对比了泄漏工况与压缩机抽吸工况的异同,说明了在存在往复式压缩机的干线中,对截断阀设置一定延迟时间的重要性。     

长输管道阀室球阀排污外排装置开发与应用

目前,在阀室对干线及旁通管路球阀进行排污作业时,由于阀室相对密闭,泄放的天然气极易在阀室内聚集,容易引发火灾爆炸等安全事故。通过研究分析,设计出一套阀室球阀排污外排装置。整个装置主要由转接头、泄放管路、阻火器以及配重块部分组成。文中介绍了该装置的特点、使用方法以及应用效果。该装置可以使排污操作时将阀腔内的气体泄放至阀室室外,避免在排污作业时造成阀室内天然气聚集,同时该装置兼具球阀内漏测试功能。此套装置改善了阀室球阀排污时的作业环境。     

气液联动阀故障分析

为保障长输管道运行安全，解决气液联动阀频繁故障的问题，对某管道气液联动阀故障进行分析及现场试验，最终确定气液联动阀喷油故障为摆缸密封失效和换向阀阀芯与阀腔渗油，阀门关断故障为ESD电磁阀底部活塞密封部件损坏及压降速率管内积液冻堵。通过故障的排查解决，优化气液联动阀维护。     

A review of the evidence for induced travel and changes in transportation and environmental policy in the US and the UK

This paper reviews recent research into the demand inducing effects of new transportation capacity. We begin with a discussion of the basic theoretical background and then review recent research both in the UK and the US. Results of this research show strong evidence that new transportation capacity induces increased travel, both due to short run effects and long run changes in land use development patterns. While this topic has long been debated amongst transportation planners, the fundamental hypothesis and theory has long been apparent in studies of transportation economics and planning that evaluated different issues (e.g. travel time budgets and urban economic development effects). We summarize much of this work and relate the theoretical issues to recent empirical research. We then proceed to examine recent changes in transportation and environmental policy in the US and the UK. The role of the new knowledge of induced travel effects would be expected to lead to changes in the conduct of transportation and environmental policy. Changes in policy and implementation of those policies are still occurring and we provide some suggestions on how to move forward in these areas.     

科技在交通社会服务中应用研究

本文分析了科技在交通社会服务中的应用存在的需求问题,结合市场对科技在交通社会服务中应用的需求,提出了提升政府网站服务水平、提升网上出行信息服务水平和提升交通产品大数据采集水平的对策。     

Problems of the carless in the United Kingdom and the United States

An examination of current population statistics shows that in the U.S. more than half of the population is without immediate access to a car, and in the U.K. more than three-fifths of the population is without access to a car. This phenomenon has been accentuated by national investment in both countries in major highway programs. The term carless refers to more than just households that own no cars. It extends, in households with cars to those without licenses (old and young), the handicapped, and even the licensed drivers who have no access to the family car when it is in use elsewhere (e.g. at work). The most severely effected are those in urban areas and especially the urban poor. Transportation expenses are limited for the poor when other family expenditures (food, shelter) take a high priority. Once the work trip has been satisfied, money for other trips, for the poor, is not always available. One solution to cost-free travel is pedestrianism (walking), but this too is difficult in urban areas where the pedestrian has been overlooked in favor of the car. Solutions to problems of the carless include dial-a-ride, better public transit, and better design of urban form.     

隧道围岩体内位移监测分析

隧道围岩体内位移监测结论对于判断围岩稳定性和保证施工安全与工程质量起着重要的作用。文章以一高速公路隧道为依托,介绍了围岩体内位移测量设备和工作原理,并通过对其围岩体内位移检测数据的分析,提出了隧道围岩体内位移监测的注意事项。     

漏磁式智能检测在管道中的运用及管道腐蚀分析

天然气输送管道在生产运行中，在内部不可避免的受到输送介质的腐蚀，在外部由于施工建设质量、绝缘层的缺陷、阴极保护不足等诸多因素的影响，同样存在腐蚀，并且随生产年限延长而逐年加重，安全隐患增大。因此，对管道内外腐蚀检测是监测、评价管道的重要项目之一。西南油气田分公司在国内首次引进国外漏磁式智能检测技术。文章分析了该项技术的检测参数、置信度、经济效果评价和存在的缺陷，论述了管道内、外腐蚀的原因，提出了减缓腐蚀的各项建议。     

钦州市城乡客运安全保障问题及对策

文章基于钦州市城乡客运的现状,阐述了钦州市城乡客运存在的安全保障问题及其原因,提出了加强城乡客运运输安全保障的主要对策。     

无功功率补偿及滤波在索道中的应用

文章简单的介绍了泰山中天门索道应用无功功率补偿和滤波技术，提高功率因素，降低电耗，改善供电质量的具体做法和体会，可供有关索道企业参考。     

城乡公交车违规停车的危害性探讨

城乡公交车站点长时间停车等客,站外随意停车等违规现象十分普遍,文章针对这一情况,通过交通事故案例分析,找出城乡公交车违规停车现象存在的原因,指出了违规停车的危害性并提出解决方法.     

Innovations in the regulation and operation of taxicabs

This paper reviews a number of recent innovations in the regulation and operation of taxicabs in U. S. cities. The paper discusses the growing involvement of various levels of government in public transportation programs which affect the taxicab industry, and identifies the opportunities and problems created for the industry by this increased government activity. Innovations in the types of public transportation services which can be provided by taxicabs are discussed first, followed by a review of the administrative procedures which can be employed to involve taxicab companies in publicly funded programs. Proposals for changes in the regulations governing taxicab services and prices are discussed next, with particular attention to significant regulatory changes which have been implemented in U.S. cities in recent years. Finally, innovations in the technology of taxicab operations are reviewed, including improvements to vehicles, computerized dispatching techniques, and procedures and equipment for computing fares for taxicab services.     

Extent and correlates of walking in the USA

This paper examines data about walking trips in the US Department of Transportation’s 2001 National Household Travel Survey. The paper describes and critiques the methods used in the survey to collect data on walking. Using these data, we summarize the extent of walking, the duration and distance of walk trips, and variations in walking behavior according to geographic and socio-demographic factors. The results show that most Americans do not walk at all, but those who do average close to thirty minutes of walking a day. Walk trips averaged about a half-mile, but the median trip distance was a quarter of a mile. A significant percentage of the time Americans’ walk was spent traveling to and from transit trips. Binary logit models are used for examining utility and recreational walk trips and show a positive relationship between walking and population density for both. For recreational trips, this effect shows up at the extreme low and high ends of density. For utility trips, the odds of reporting a walk trip increase with each density category, but the effect is most pronounced at the highest density categories. At the highest densities, a large portion of the effect of density occurs via the intermediary of car ownership. Educational attainment has a strong effect on propensity to take walk trips, for both for utility and recreation. Higher income was associated with fewer utility walk trips but more recreational trips. Asians, Latinos, and blacks were less likely to take utility walk trips than whites, after controlling for income, education, density, and car ownership. The ethnic differences in walking are even larger for recreational trips.