浅谈对涉外工程项目管理的几点思考

组建项目组,运用科学的项目管理手段完成项目的成本、质量、工期、人员和设备等方面的管理,避免项目风险,合理利用国际条款实现项目目标。     

从数字看中国铁路隧道的建设

根据收集到的有关中国铁路隧道建设比较全面、可靠的统计资料,按年代和铁路线归纳整理列出的,并用数字来阐述截至2005年末中国铁路隧道建设的基本情况与发展历程；同时对隧道命名与隧道长度计算的统一等问题提出建议。     

做好电务"天窗"修的几点思考

在第六次大面积提速调图后的新形势下，结合“天窗”修工作现状，从检修工作量与“天窗”次数的合理确定、“天窗”点内点外作业安排、设备状态和人的状态控制、工电协作联整设备、状态修与“天窗”修有机结合等5个方面展开了思考。     

电务系统杜绝恶性违章的思考

分析了近10年全路电务行车事故以及诱发电务恶性违章发生的心理因素,论述了电务恶性违章导致大事故的必然性,建议进一步明确电务恶性违章,并在电务系统开展杜绝恶性违章的活动。     

Vehicle purchasing behaviors comparison in two-stage choice perspective before and after eco-car promotion policy in Japan

This paper compares the vehicle purchasing behaviors in Japan between before and after the eco-car (environmental friendly vehicle) promotion policy implemented. Consumer behaviors are modeled as a two-stage decision process: a consideration set formation stage and a choice-making stage. In the first stage, all available vehicle types are included in the choice set, and consumers are assumed to apply a conjunctive screening rule to construct consideration sets. In the second stage, consumers only evaluate the vehicles in the consideration set and choose the one with maximum utility. The applied Hierarchical Bayes model can avoid the issue of an indifferentiable and irregular likelihood surface caused by thresholds and discontinuities, and the data augmentation and Markov-Chain Monte Carlo estimation methods make it possible to estimate two stages simultaneously using only the information about the consumers’ actual choices. The estimations indicate that the change of consumer behavior during the formation of consideration sets after the policy implemented: more people preferred compact and hybrid vehicles because of their better fuel efficiency and more competitive prices under the tax reduction policy. The results show, however, that most of consumers who purchase hybrid vehicles after the policy implemented are only including hybrid vehicles in their consideration sets, and oil price and vehicle price still play important roles in the choice-making stage for these who consider both gasoline and hybrid vehicles.     

对"2007年渤海溢油应急演习"的思考

本文介绍了"2007年渤海溢油应急演习"概况,分析了演习的经验和成果,就演习反映的问题提出了解决建议。     

正视网络运维问题实现可持续发展

介绍了目前铁通网络运行与维护工作中存在的矛盾和问题，对可持续发展目标进行思考，提出优化网络、加快网管中心建设、大力培养人才等合理化建议。     

基于奔驰275发动机废气涡轮増压系统结构原理的检修及维护

增压技术是提高发动机功率和完善发动机性能的重要手段之一,一般采用废气涡轮增压系统实现增压目的。本文以奔驰275发动机的废气涡轮增压器系统为例,结合废气涡轮增压器系统结构和工作原理探寻如何进行行之有效的检查与维修,并给出了相应的维护保养建议。     

高职高专院校实行学分制的分析与思考

学分制已成为当前高职高专教学管理体制改革的方向,学分制是一种有别于学年制的管理制度。实行学分制虽然有利有弊,但利大于弊,而且在实行学分制的过程中出现问题,也大都是管理不到位引起的。构建学分制管理模式是深化职业教育教学改革的必然趋势。