鲤鱼山水道6 m水深航道治理措施

为满足"十三五"期武汉至安庆6 m水深航道建设要求,开展多因素限制下武安段鲤鱼山水道6 m水深航道治理措施研究。通过该水道近期6 m水深航道条件分析,明晰河段6 m水深下航道的问题,并探讨浅滩治理思路,提出单纯技术因素下河段治理思路和措施;针对单纯技术因素下工程措施与鲤鱼山水道众多涉水建筑物存在矛盾的问题,通过模型试验提出多限制条件下鲤鱼山水道6 m水深航道治理措施。     

Modeling risks and uncertainties in residents’ license choice behaviors under a vehicle restriction policy

Understanding residents’ perception and reaction to vehicle restriction policies is significant for transportation management. However, few studies have examined it from a behavioral and disaggregated perspective, particularly from people’s responses to uncertainties in choices, and their consequent behaviors under potential risks. This paper proposes a multi-level nested logit method to model sequential choice behaviors considering uncertainties under a vehicle license restriction policy. Prospect theory is applied, where a novel reference point is proposed based on instances of ‘whether a risk happens’ rather than a hard number which is difficult to obtain in reality. A case study in Guangzhou, China is presented, where a vehicle restriction policy has been applied for three years. Residents’ attitudes and preferences under uncertainties and different risks are revealed, and these factors are significant in predicting people’s future decisions while policy changes.     

水运工程施工单位企业定额发展现状及分析

针对企业定额在国内水运工程施工单位企业管理中使用率低、准确率低、编制水平低的问题,进行企业定额发展状况研究,并与国外先进施工企业发展理念进行比较,分析制约企业定额发展的主要因素,提出成立预算管理部门、数据收集注重时效性、实行数据库动态管理等发展企业定额的措施,为充分发挥企业定额的重要作用提供理论依据。     

海上协同作战对通信能力的需求与对策研究

海上协同作战是各国海上作战的发展趋势,其作战效能的有效发挥有赖于宽带实时的数据传输分配系统。文章在分析美军CEC系统中数据分发系统（DDS）的基础上,讨论了海上协同作战对通信能力的需求,并根据这些需求提出了一些初步的应对策略。     

Towards a Formalized Ontology-Based Requirements Model

The goal of this paper is to take a further step towards an ontological approach for representing requirements information. The motivation for ontologies was discussed. The definitions of ontology and requirements ontology were given. Then, it presented a collection of informal terms, including four subject areas. It also discussed the formalization process of ontology. The underlying meta-ontology was determined, and the formalized requirements ontology was analyzed. This formal ontology is built to serve as a basis for requirements model. Finally, the implementation of software system was given.     

基于工作过程教学模式下的数学课程改革

本文分析了课程改革的一些现状和出现的问题,围绕新一轮的基于工作过程系统化的高职课程改革与建设,从教材体系、教学内容、教学过程以及教学评价等几方面入手,讨论了高职院校如何进行数学课程改革。     

列车由车辆段往返正线的接发车能力分析

轨道专业为优化某市地铁拟建线工程中车辆段至正线B站的站间线路，推出了一个新方案。本文就原线路方案和推荐方案分别处于非正常情况时，列车在车辆段与正线间的作业情况进行综合性分析，并从城轨交通信号专业的角度对推荐方案给予技术性支持，该分析可为今后城市轨道交通的同类线路设计提供有益参考。     

排水沥青混凝土路面技术及其在日本的发展

排水沥青混凝土路面由于具有迅速排水、抗滑,降低雨天水雾、水漂,提高行车视距,减少雨后反光,降低噪声等优良的路用性能,在欧美日等发达国家的道路上得到广泛推广应用。借助于日本排水沥青混凝土路面的发展经验,较全面地介绍了排水沥青混凝土路面的混合料设计、材料品质要求、材料品质与路用性能的关系、路面施工和使用养护维修等方面的信息,旨在为我国公路工作者研究、设计和推广应用该路面提供可借鉴的参考。     

The intelligent use of finite element methods

The structural analysis based on application of numerical methods used in the solution of complex structural problems, when applied correctly, is a powerful tool leading to rational structural design of ships. This paper discusses the practicalities of its application and indicates that in order to achieve the stated objective, the following are essential pre-requisites: a) full understanding of the problem; b) ability to solve the problem using currently available methods; and c) ability to interpret the results of the analysis correctly. Whilst there is still a lot of discussion on whether the structural analysis represents a structural design or a structural verification tool, the view expressed in this paper is that the structural analysis should mainly be used in the latter context. This means that a sound engineering solution ought to be established in the first phase of the analysis and used as a basis. The final results will then only be used to perfect the structural detail and modify the areas where rapid stress gradients occur. Any other approach would invariably require repetitive, time consuming and costly iterations which under normal circumstances may prove to be counter-productive. This paper presents a few examples of practical application, the methodology of achieving the solution and the way of interpreting the results.     

撰写航海科技论文的基本要求

作者系人民交通出版社原社长，根据长期从事编辑工作的实践，并参照一些有关规定，对科技论文的撰写文体、论文格式等基本要求进行探讨，以供航海界广大科技人员及院校师生参考。