我国航运电子市场的准入与退出制度

在简要介绍国内外航运电子市场发展和现状的基础上,结合航运电子市场在我国发展的实际需要,归纳建立航运电子市场准入与退出制度的必要性,着重分析当前我国航运电子市场准入与退出制度的现状,对我国进一步提高航运电子市场准入与退出的标准提出对策。     

RPC混凝土在铁路预应力T形梁中的应用试验

我国在迁曹铁路滦柏干渠大桥工程中，首次采用活性粉末混凝土（Reactive Powder Concrete，RPC）制作多孔预应力简支T形梁进行力学性能测试和行车监测，其中1孔（2片）进行了力学性能测试，5孔（10片）进行了行车监测，取得了良好的效果。通过RPC混凝土桥梁的制作和试验，总结了部分制作经验，通过力学性能测度，证明了RPC混凝土在铁路桥梁应用中的可行性和良好前景。     

ATCEM: a synthetic model for evaluating air traffic complexity

Air traffic complexity, which measures the disorder of air traffic distribution, has become the critical indicator to reflect air traffic controller workload in air traffic management (ATM) system. However, it is hard to assess the system accurately because there are too many correlated factors, which make the air traffic complexity nonlinear. This paper presents an air traffic complexity evaluation model with integrated classification using computational intelligence (ATCEM). To avoid redundant factors, critical factors contributing to complexity are analyzed and selected from numerous factors in the ATCEM. Subsequently, to construct the mapping relationship between selected factors and air traffic complexity, an integrated classifier is built in ATCEM. With efficient training and learning based on aviation domain knowledge, the integrated classifier can effectively and stably reflect the mapping relationship between selected factors and the category of air traffic complexity to ensure the precision of the evaluation. Empirical studies using real data of the southwest airspace of China show that the ATCEM outperforms a number of state‐of‐the‐art models. Moreover, using the critical complexity factors selected in ATCEM, the air traffic complexity could be effectively estimated. Copyright © 2015 John Wiley & Sons, Ltd.     

灌注桩在码头结构力固中的应用

灌注桩作为成熟的成桩技术在新建工程中得到了广泛的应用,将其引入到码头结构加固方面是可行的。文章结合工程实例,探讨了灌注桩在沉箱码头、方块码头、板桩码头和高桩码头等型式码头结构加固方面的应用情况和相关技术。介绍了采用钢质半封闭桩尖提高钻孔灌注桩端承力的技术,最后对灌注桩用于码头结构加固中的优点和不足进行了分析归纳。     

The relationship between the built environment and nonwork travel: A case study of Northern California

Many studies have found that residents living in suburban neighborhoods drive more and walk less than their counterparts in traditional neighborhoods. This evidence supports the advocacy of smart growth strategies to alter individuals’ travel behavior. However, the observed differences in travel behavior may be more of a residential choice than a travel choice. Applying the seemingly unrelated regression approach to a sample from Northern California, we explored the relationship between the residential environment and nonwork travel frequencies by auto, transit, and walk/bicycle modes, controlling for residential self-selection. We found that residential preferences and travel attitudes (self-selection) significantly influenced tripmaking by all three modes, and also that neighborhood characteristics (the built environment and its perception) retained a separate influence on behavior after controlling for self-selection. Both preferences/attitudes and the built environment itself played a more prominent role in explaining the variation in non-motorized travel than for auto and transit travel. Taken together, our results suggest that if cities use land use policies to offer options to drive less and use transit and non-motorized modes more, many residents will tend to do so.     

29000t化学品／成品油轮航行信号设备及木作家俱设计

本人参与了29000t化学品／成品油轮的设计工作，在该项目中负责内装部分图纸的详细设计工作，具体包括全船灯光／航行信号系统、全船木作布置图、全船木家具及金属家具图册、部分舵室布置图册等四个部分，现对该些部分设计工作进行某些总结。     

驼峰自动控制系统设备安装和调试方法

驼峰自动控制系统设备安装和调试，涉及到驼峰信号联锁、雷达测速、工频测长、调速的空压动力设备、压力容器和管道、调速制动等多工种的协作配合，对首次接触到这套系统的施工、运营和接管维修单位来讲，是一个全新的课题。新设备在安装调试和使用过程中，出现的问题若能及时发现和处理，设备的功能就能充分发挥，否则，就会严重影响驼峰的安全生产。为此，我们总结了一些经验。     

舰载作战指挥系统软件体系结构设计技术初探

软件体系结构是软件系统的顶层设计内容，在用户需求与系统实现之间提供一个重要的桥梁。其目的是保证软件的质量，提高软件的可靠性、可重用性和可维护性。以舰载作战指挥系统为应用对象，分析了软件体系结构分析与设计技术、形式化描述技术以及具体的实现技术，最后给出了一个简单的实例。     

工程弃碴改良膨胀土路堤的实验研究

通过室内试验、现场检测 ,利用工程弃碴改良膨胀土路堤的工程特性进行研究 ,给出改良土的最佳配合比 ,合理摊铺厚度以及压实工艺。现场实施表明经济有效、满足质量要求     

旅客列车办公信息系统的探讨

在铁路计算机售票系统迅速推广应用的大好形势下,客票管理在列车办公系统中的应用已提到议事日程。为了满足列车办公系统的实际需要,尽快研究提出解决方案,作者通过系统分析提出了旅客列车办公信息系统的系统功能和体系结构。