Models for optimizing transportation networks and modal split in China

This paper summarizes the research in a project entitled “The Models for Optimizing Transportation Network and Modal Split in China”. The research background, procedure, various mathematical models used in traffic demands forecasting, modal split and network design are presented with the key results. The systematic optimization approach adopted in this paper for integrated planning of transport network and the rational modal split formulation is firstly proposed in China. Finally, further discussion on the difficulties of using transport modeling techniques in Chinese conditions is given.     

谈足球运动员力量素质的训练

借鉴相关研究成果，结合足球运动项目的特点，对足球运动员力量素质的特点和影响因素，以及发展足球运动员力量素质的训练原则和训练方法进行了探讨。     

基于坐标变换的罗经水平误差补偿办法

分析了水平基准误差对天测罗经差的影响，并给出补偿的方法。利用小型化姿态敏感单元可以测量罗经水平基准在x、Y方向上的倾角，然后利用旋转矩阵的方法建立天体方向矢量之间的联系，进而精确地确定因罗经盆的水平误差而引起的观测罗方位的误差，给出了精确的数学模型，大大提高了观测天体确定罗经差的准确性。仿真分析表明，该方法具有很大的实际应用价值。     

建筑施工企业项目成本管理分析与研究

从建筑施工企业的成本构成入手,分析企业应加强内部管理,减少期间成本;应强化对项目成本的监督管理,落实成本管理责任;应加强项目成本控制,实现成本管理目标。并通过实例剖析企业成本管理的方法及效果     

武九铁路扩能提速工程南阳河特大桥既有左线桥拆除爆破

介绍武九铁路扩能提速工程南阳河特大桥既有左线桥拆除爆破的施工方案、主要设计原则及技术设计成果。该桥于2004年9、10月间成功爆破,达到安全、高效的总体目标。     

世界汽车工业发展趋势综览

1知识经济新形势下的产业改组与调整 从20世纪就已开始的汽车工业全球化是与跨国的全球战略分不开的.这种全球化包括汽车开发的全球化、采购的全球化、生产的全球化、销售战略的全球化及售后服务的全球化.汽车工业全球化旨在降低生产经营成本,增强在世界的竞争能力,优化资源的配置.     

Fatigue analysis of the bow structure of FPSO

The bow structure of FPSO moored by the single mooting system is rather complicated. There are many potential hot spots in connection parts of structures between the mooting support frame and the forecastle. Mooting forces, which are induced by wave excitation and transferred by the YOKE and the mooting support frame, may cause fatigue damage to the bow structure. Different from direct wave-induced-forces, the mooting force consists of wave frequency force (WF) and 2nd draft low frequency force (LF) , which are represented by two sets of short-term distribution respectively. Based on two sets of short-term distribution of mooting forces obtained by the model test, the fatigue damage of the bow structure of FPSO is analyzed, with emphasis on two points. One is the procedure and position selection for fatigue check, and the other is the application of new formulae for the calculation of accumulative fatigue damage caused by two sets of short-term distribution of hot spot stress range. From the results distinguished features of fatigue damage to the FPSOs bow structure can be observed.     

汽车工业信息网发展模式研究

本文在分析国内外汽车工业信息网络发展的基础上，提出了面向21世纪发展汽车工业信息网络的总体思路，构造了网络结构模型，分析了其关键技术。     

浅埋暗挖施工中用临时仰拱控制地表沉降有效性分析

北京地铁5号线和平里北街站—和平西桥站区间施工过程中,采取加设临时仰拱的方式以减小地表沉降的技术措施,采用有限元理论进行了分析计算,并结合实际监测资料进行了论证,表明该措施对地下隧道施工控制地表沉降是有效的。     

Pragmatic Turn of National Higher Education and Analysis of Guiding Rules

Nowadays more universities and colleges have taken the cultivation of pragmatic studenet as the core of guiding teaching ide- ology which focuses the task of teaching students practical to meet the demand of society for better employment This trend has to be carried out by the delicate design of teaching schemes and great change of teaching method and students achievement evaluation system.