现代城市轨道车辆空调系统的特点及发展方向

通过对城市轨道交通空调系统的要求和特点介绍，探讨了城轨车辆空调系统的结构形式及控制系统等，并介绍城轨车辆空调系统的发展方向。     

体育教学对学生社会适应能力的培养

通过对文献资料和教学实践的总结分析，阐述了体育教学中应通过不同的教学方法和手段，增强学生的体质，提高学生的心理素质，培养学生的社会适应能力，促进学生社会化的发展。     

我国铁路和城市轨道交通的发展及投资控制

通过追述我国铁路和城市轨道交通的发展，展望铁路和城市轨道交通项目的建设前景，论述其影响投资的主要原因和控制投资的具体措施。     

促进铁路现代物流业发展的策略分析

阐述了发展铁路现代物流业的总体构想和实施原则,从加快铁路物流标准化体系及信息化建设,规范铁路物流业管理机构,加强物流统计和人才培养,完善铁路各项规章制度等方面提出了发展铁路现代物流业的策略。     

基于C＋＋的Pro/E野火3.0二次开发探讨

本文主要介绍了基于VC＋＋的Pro/E二次开发的过程,以及开发过程中需要注意的一些设置.     

电气工艺实习的创新性改革

从目前电气工艺实习教学所存在的问题出发，以培养学生的创新能力和工程实践能力为基本思路．引入高新技术，追求先进性，强调实用性，保持统一性与多样性．改革培训模式，改善实习设施，优化教学内容，改进教学方法和手段．     

上海海洋工程产业现状和发展

为加块发展上海的海洋工程，对上海的海洋工程历史和现状作了调查研究，按照“十一五”规划以及上海的具体情况，对其未来发展方向作了展望。     

对实现农村公路可持续发展的几点思考

农村公路是广大农村地区最主要的交通基础设施,农村的公路建设和发展直接影响农民的生产和生活。文章指出,各级政府对农村公路的重视程度和投入力度,才是保障农村公路良好运营、促进农村公路全面协调可持续发展的关键。     

Cooperation in transit delivery in West German metropolitan areas

West Germany is densely populated, averaging 245 inhabitants/km², but varying widely between urban agglomerations and rural areas. Transport volume has increased by 40% since 1970, with virtually all growth due to private automobiles. Since 1981 public transit has been suffering from decreasing demand.A 1964 Expert's Report to the German federal government was the stimulus for initiating an effective funding mechanism for new public transit construction. In 1965 Germany's first federated transit authority was founded for the region of Hamburg.Principal among the goals of any cooperative agreement among transit companies are improvements for the passengers and improvement of revenues for the companies. To attain these ends, two distinct forms of transit aggrements have been developed in Germany: transit cooperative (Verkehrsgemeinschaft) and transit federation (Verkehrsverbund). The former is more suitable for smaller to medium-sized towns, while the latter is more suitable for larger cities. The two types are described in this article.German transit federations during the 1970s succeeded in significantly increasing ridership, while during the 1980s patronage has either remained steady or has declined. Yet transit federations showed much better perfomance than did public transit in general. In terms of costs and revenues, no public transit organization in Germany is able to break even; deficits vary between 42% and 55%. The author concludes, however, that hidden subsidies for automobile traffic are far higher, because of environmental damage and the high social cost of traffic accidents.     

智力低下儿童骨龄与体格发育的研究

本文对93例智力低下儿童与305例智力正常儿童的体格发育及骨龄进行了对照分析,结果发现,约有半数智力低下儿童体格发育低下。骨龄延迟也多于对照组。智力低下越严重,体格发育低下越多。体格发育低下在环境及经济条件差的地区明显高于条件较好的地区,男性较女性多。另外,年龄越小,骨龄及体格发育低下越多,达青春期,部分可减轻或恢复正常。结合流行病学调查及临床x线检查,认为营养及环境可能是影响智力与体格发育的重要因素。