LKD1-T型列控中心的工程接口和现场调试方法

LKD1-T型列控中心是全路使用最广的既有线列控中心设备。本文介绍了LKD1-T型的工程接口，针对列控中心开通的准备工作和现场调试方法进行了详细阐述，对于帮助和指导现场人员和施工单位、电务工作人员熟悉列控中心设备原理，进行现场开通调试，具有一定指导意义。     

超大型油轮过马鞭洲航道时安全航速的探讨

根据规划中马鞭洲航道的尺度,从理论上计算出25万吨油轮满载乘潮进港时,船舶安全通过马鞭洲航道时所允许的安全航速范围。安全航速范围对船长、引航员和驾驶员在操纵VLCC进出马鞭洲航道航道时具有重要的参考价值。     

计算机联锁进路搜索算法的分析与研究

简述了计算机联锁系统中站场型数据结构的建立方法，通过深入研究站场型数据结构形状与二叉树的相似性，结合在实际搜索进路过程中总结的经验，提出了一种基于站场型数据结构的新的进路搜索算法。该算法是结合了二叉树、四叉链表和高度原则的新的进路搜索算法。详细论述了这种算法，并给出了完整的描述。     

白沙盘浅滩治理方案

通过多年对汉江上游航道观测和疏浚施工,简单分析了白沙盘浅滩碍航产生的原因,提出了符合实际的整治工程措施。实践证明,治理效果良好,达到了预期目标。     

元谋至武定高速公路地质选线理念实践

元谋至武定高速公路（以下简称“本项目”）处于云南滇中红层地区,该地区地质地貌复杂,不良地质类型多样,潜在危害严重,本项目在路线设计过程中贯彻了地质选线理念,针对各种不良地质的规模及特点采取了避让、处治等措施,有效降低了本项目的工程造价,增加了地质灾害安全性,为工程的建设营运打下了良好的基础.     

计算机联锁中非进路调车的软件设计与实现

本文主要讨论了怎样用计算机联锁软件来实现非进路调车作业。     

无线传感器网络路由协议研究

网络数据传输离不开路由协议,但是,传统的无线AdHoc网络路由协议却不能适用于无线传感器网络。本文结合工作实际详细分析了几种路由协议或设计新的路由协议,使网络具备更好的可伸缩性和更强的适应网络拓扑变化的能力。     

Evaluating the assumption of independent turning probabilities

Several urban traffic models make the convenient assumption that turning probabilities are independent, meaning that the probability of turning right (or left or going straight through) at the downstream intersection is the same for all travelers on that roadway, regardless of their origin or destination. In reality most travelers make turns according to planned routes from origins to destinations. The research reported here identifies and quantifies the deviations that result from this assumption of independent turning probabilities.An analysis of this type requires a set of reasonably realistic “original” route flows, which were obtained by a static user-equilibrium traffic assignment and an entropy maximization condition for most likely route flows. These flows are compared with those route flows resulting from the Assumption of Independent Turning Probabilities (ITP). A small subnetwork of 3 km by 5 km in Tucson, Arizona, was chosen as a case study. An overall “typical ratio” of 2.2 between original route flows and ITP route flows was obtained. Aggregating route flows to origin–destination flows led to an overall “typical ratio” of 1.7. Such deviations are particularly high for routes that go back-and-forth, reaching a ratio of more than 3 in certain time periods. Substantial deviations for origins and destinations that are on the same border of the subnetwork are also observed in the analyses. In addition, under the ITP assumption, morning rush hour traffic peaking is the same in all directions, while in the original flows some directions do not exhibit a peak in the morning rush hour period. Overall, the conclusion of the paper is that the assumption of independent turning probabilities leads to substantial deviations both at the route level and at the origin–destination level, even for such a small network of the case study. These deviations are particularly detrimental when a network is being modeled and studied for route-based measures of effectiveness such as the number and types of routes passing a point – for monitoring specified vehicles and/or managing detouring strategies.     

京福国道主干线福建省境内西段路线方案技术经济论证

从技术可行性与经济合理性两个方面，对京福国道主干线福建省境内西段路线方案进行分析论证，克服了公路路线规划中通常只进行技术可行性论证的缺陷，为从事道路规划提供一条创新思路。     

Modeling the impact of pre-trip information on commuter departure time and route choice

The objective of this paper is to investigate the impact of pre-trip information on auto commuters’ choice behavior. The analysis is based on an extensive home-interview survey of commuters in the Taichung metropolitan area in Taiwan. A joint model for route and departure time decisions with and without pre-trip information is formulated. The model specifications are developed for both the systematic and random components. In particular, econometric issues associated with specifying the random error structure are addressed for parameter estimation purposes. Insights into the effects of attributes are obtained through the analysis of the model's performance and estimated parameter values. A probit model form is used for the joint model, allowing the introduction of state dependence and correlation in the model specification. The results underscore the important relationship between the different characteristics and the propensity of commuter choice behavior under two scenarios, with and without pre-trip information.