龙川北Ⅰ场调车机车监控记录系统

详细介绍了龙川北Ⅰ场调车机车监控记录系统的工作原理、设备组成、系统功能、控制方式以及试验效果，充分说明该系统的应用可行性。     

机车摩擦副材料磨损微粒的分形描述

机器设备摩擦副磨屑微粒（磨粒）是判断运动中摩擦副磨损状态的主要依据，而磨粒的定量分析描述与自动识别，长期以来一直是设备磨损状态监测与故障诊断信息流程中最为复杂和亟街解决的关键问题，本文引入分形几何这种非线性系统方法来完成了对磨粒的定量描述和自动分析，给出了分维算法模型及相应实验结果，并结合人工神经网络来完成的磨普的分割与自动识别。     

Dynamic programming of port position and scale in the hierarchized container ports network

A hierarchized container ports network, with several super hubs and many multilevel hub ports, will be established, mainly serving transshipment and carrying out most of its business in the hub-spoke mode. This paper sums up a programming model, in which the elementary statistic units, cost and expense of every phase of any shipment are the straight objects, and the minimum cost of the whole network is taken as the objective. This is established based on a dynamic system to make out the hierarchical structure of the container ports network, i.e. the trunk hub and feeder hubs can be planned in a economic zone, then the optimal scale vector can also be obtained for all container ports concerned with the network. The vector is a standard measurement to decide a port's position and their scale distribution in the whole network.     

AQP4在COPD支气管黏膜的表达及其与患者肺功能、气道黏膜炎症的相关性

目的通过免疫组化法检测支气管黏膜中水通道蛋白-4(aquaporin-4,AQP4)的表达,观察正常组和慢性阻塞性肺疾病(chronic obstructive pulmonary disease,COPD)组支气管黏膜中AQP4表达与气道黏膜炎症及肺功能的关系,明确AQP4在COPD发生、发展中的作用,为COPD的防治开辟新途径。方法选择正常人和COPD患者各30例,测试肺功能,并行支气管镜检查,取得支气管黏膜标本,用免疫组化法检测AQP4表达,HE染色观察支气管黏膜炎症细胞浸润程度。结果COPD组较对照组AQP4表达减弱有极显著差异(P<0.001)。AQP4表达和FEV1/FVC、FEV1/pred%呈正相关(P<0.001),与支气管黏膜炎症严重程度呈负相关(P<0.001)。结论COPD患者AQP4表达减少可能是其肺功能下降及气道炎症加重的原因之一。临床上可以通过改善AQP4治疗COPD。     

A tool to aid redesign of flexible transport services to increase efficiency in rural transport service provision

Rural areas generally have lower and more dispersed demands for travel which cannot sustain conventional public transport services and consequently have a greater number of flexible and demand responsive transport services operating. These services usually operate on a stand-alone basis, are often subsidized and are typically only accessible by certain passenger types or for specific trip purposes. This generally results in uncoordinated and inefficient transport provision overall. The Flexible integrated transport services (FITS) system featured in this paper has been designed to address this problem. FITS can be used as a planning tool to assess potential benefits from relaxing operating constraints (e.g., a service's operating boundaries), which can potentially suggest service redesign. It also includes the capacity to assign subsidy payments on a trip by trip basis to increase cost efficiency whilst meeting a greater proportion of transport needs. The case study in the paper focusses on transport to health in the Aberdeenshire and Morayshire areas of Scotland in the UK. Despite flexible transport operators receiving public funds to meet passenger needs, this is currently being supplemented by public bodies paying large amounts in taxi fares in instances where there is a statutory obligation to provide travel but where no other suitable transport service exists. The results demonstrate the potential substantial savings which could be realized by allowing transport operators to redesign their services by relaxing constraints and by the reassignment of subsidies: resulting in more passenger demands being met and a reduction in public spending on taxi fares.     

保价货物事故补偿条件的确定与思考

1事故案情简介 1999年11月29日,3052次货物列车18时02分到达萍乡站,进老场4道,22时40分作业人员发现P62N3338191冒烟,立即向公安、消防部门报警.经组织奋力扑救,于30日零时10分将火扑灭.火灾扑灭后,车站立即组织人员对抢救出的货物进行了清理:完好货件31件;不同程度湿损309件;过火过水的31件;还有一大堆烧损的散捆烟叶.     

关键成功因素法在新农村建设中的应用——基于湖南岳阳君山区新洲村的案例研究

建设社会主义新农村是我国现代化进程中的重大历史任务,"三农问题"一直是全社会所关注的热点问题。本文通过对湖南省新农村建设示范村岳阳市君山区柳林洲镇新洲村实地考察,创造性的结合信息开发系统中的关键成功因素法,对该地的经济建设进行分析,并提出了新农村经济建设的相关规律,应用于该村,取得了良好的成效。     

激光断面仪在隧道衬砌厚度检测中的应用

以往激光断面仪主要用于隧道断面的测量及隧道开挖过程中超欠挖的控制,还没有用于衬砌厚度的量测。文章主要介绍了激光断面仪在检测初期支护混凝土厚度中的应用,并通过对两个初支衬砌厚度检测的实例分析,说明该方法的优越性。     

机车车辆产品零件检测方案的优化

通过比较、选择、统计分析、验证等方法，对铁路机车车辆产品零配件的检测方法进行优化，建立了一套具有一致测量策略、高效可靠、减少人工干扰的测量程序。     

减速齿轮箱安装精度控制技术在实船上的应用

新型舰船动力系统的许多重要设备属于研制产品,设备的安装质量是整个工程的关键,为使设备安装达到质量要求,运用平面方程计算程序,对舰船减速齿轮箱装置安装精度的控制技术进行了应用研究。该精度控制技术的方法简单,安装成本低,控制精度高并且控制方向准确。