浅谈水泥混凝土路面裂缝的处理及修复方法

结合湖北省十堰市的道路修补的经验,对不同混凝土裂缝病害的处理工艺和材料进行了研究,现着重谈下裂缝及断板的处理及修复工艺。     

关于水泥就地冷再生路面设计及施工技术的探讨

结合辽宁省普通公路近年来应用水泥冷再生技术的工程实践,论述了水泥冷再生路面的设计要点和施工工艺。     

桥梁顶升工程施工工艺及关键技术

桩桥梁顶升技术是一种桥梁改造技术,具有经济、环保、高效、节能等优点,在针对解决桥梁净空不足方面,其社会和经济效益尤其明显。本文以高速公路天桥顶升为依托,对桥梁顶升技术的关键和工程施工工艺进行了探讨。文中根据实践工作对桥梁顶升工程的施工过程进行了简明扼要地阐述,并对施工中需要注意的关键技术重点介绍。     

Impacts of Information and Communication Technologies (ICT) on time use and travel behavior: a structural equations analysis

The objective of this paper is to contribute an empirical study to the literature on transportation impacts of Information and Communications Technologies (ICT). The structural equation model (SEM) is employed to analyze the impacts of ICT usage on time use and travel behavior. The sample is derived from the travel characteristic survey conducted in Hong Kong in 2002. The usage of ICT is defined as the experience of using e-mail, Internet service, video conferencing and videophone for either business or personal purposes. The results show that the use of ICT generates additional time use for out-of-home recreation activities and travel and increases trip-making propensity. Individuals at younger age or with higher household income are found to be more likely ICT users. The findings of this study provide further evidence on the complementarity effects of ICT on travel, suggesting that the wide application of ICT probably leads to more, not less, travel. The study also demonstrates the importance of considering the interactions between activity and travel for better understanding of the nature and magnitude of the impacts of ICT on time use and trip making behavior.