VLCC船前期电气设计的几点探讨

本文是对船舶电力系统设计中短路电流的估算及开关的短路分断能力的应用,做了部分研究及介绍;同时针对近期各船级社日益严格的要求,对选择性保护分析表做了介绍.     

无缝设计与施工在某超长结构地下室中对砼裂缝控制应用

结合工程实践,通过对地下室砼开裂的原因进行了分析,对影响结构的耐久性和安全性的裂缝,提出处理措施。     

The Nigerian shipping industry and indigenous shipping companies

The shipping industry in Nigeria since the early 1990s has been experiencing a continuous disastrous downturn. Nigerian shipping companies' participation in international shipping has continued to be very limited. Their presence and impact is hardly felt in the world's shipping industry. Both the national carriers (that is shipping companies with national carrier status) and other indigenous private shipping companies have vessel as well as management problems. These problems have led to the poor performance of the Nigerian shipping industry for over a decade now. The carriers in the industry are not attaining for the country the gains that are supposed to emanate from shipping. This paper points out the importance of shipping to a nation, identifies the problems the country's shipping companies are facing and proffers solutions that include merging of the companies to have strong financial standing and a competitive edge.     

利用RBF神经网络预测和消弱低频无线电导航定位误差

由于诸多因素的影响，导致了低频无线电导航系统的定位误差和GPS卫星导航系统的定位误差之间存在较大的差距，拟采用径向基函数（RBF）网络来预测电波传播误差，以期达到修正现有低频无线电导航系统定位误差的目的，从而进一步提高低频无线电导航定位的精度。     

儿童慢型克山病的自然病程

为了探讨儿童慢型克山病的自然病程和预后危险因素，本文分析了长期随访的儿童慢型克山病６３例，结果表明：①儿童慢型克山病预后差，其１年存活率５０．５％、５年仅１５．８％；②自然慢性发病、有奔马律、心功能Ⅲ级以上，心电图心室增大，Ｘ线心胸比率重度扩大者，５年存活率低（Ｐ＜０．０５或０．０１）。     

Intra-Platoon Collision Behavior during Emergency Operations

This paper presents current research regarding intra-platoon collision dynamics for rapid decelerations. Measures of ride quality and impact severity are introduced to allow comparisons between different collision scenarios. In this study, the disturbance input to the platoon is assumed to be a rapid braking of the lead vehicle. Several deceleration rates are used to assess the overall platoon behavior and the effect of the intra-platoon collisions on the platoon passengers. The role of the desired headway spacing on preventing the occurrence of intra-platoon collisions and improving rider comfort is discussed.     

重庆"较-新"线跨座式单轨车辆技术特征

根据跨座式单轨交通系统的特征,重点阐述了重庆较-新线单轨车辆的运行条件和技术定位,指出跨座式单轨交通系统广阔的应用前景,为国内同行开展车辆引进和国内研制工作提供了参考.     

钢管拱肋微膨胀混凝土压注技术

拱肋压注混凝土施工在拱桥施工中是一个很重要的环节。介绍拱肋混凝土的压注工艺和方法,包括选材、混凝土配合比的设计,混凝土的拌制、运输等。可供借鉴。     

基于模糊理论的岚山港液体石油化工品码头建设方案优选研究

基于模糊理论和层次分析法,在合理确定指标集、评语集、权重集和评价矩阵的基础上,构造了岚山港液体石油化工品码头建设方案优选的二级模糊综合评价模型,并应用该模型选出了最佳工程方案,验证了该方法的有效性和合理性。