南京长江第四大桥钢箱梁施工关键技术

南京长江第四大桥主桥采用3跨连续式钢箱梁结构形式．钢箱粱安装涉及主航道深水区、南北边跨浅无水区、主塔无索区、端梁处超低空间荡移等多种施工条件．且在南北过渡墩处设置限位索,钢箱梁安装难度大。文章主要介绍了钢箱梁安装施工关键技术,可为类似工程提供参考。     

粉砂土路基施工技术

结合工程实例,介绍了粉砂土填筑路基的施工工艺及注意的问题。     

FAS接入GSM-R系统方式探讨

介绍FAS（固定用户接入系统）的网络结构,以FAS与GSM-R系统间话务量为基础,从系统容量、处理能力、网络安全、以及信令等方面对FAS接入GSM-R系统2种方式进行分析比较.     

Comparison of updating techniques in transferability analysis of work trip mode choice models in developing countries

This study analyzes the performances of updating techniques in transferability of mode choice models in developing countries. A model specification, estimated in Ho Chi Minh City, was transferred to Phnom Penh. Naïve transfer and four updating methods associated with small sized samples were used in the transfer process and were evaluated based on statistical perspective and predictive ability. The study also illustrates the problems faced in model transferability development, due to the lack of available and suitable data in Phnom Penh. This lack is strongly related to different methods and structures applied in collecting the data. Simplified approaches to the difficulties are proposed in the study. The results show that updating ASCs, updating both ASCs and scale parameter, and use of combined transfer estimators all produce significant improvement, both statistically and in predictability, in updating the model. The last two methods have proven to be superior to the first method, owing to the inclusion of transfer bias considerations in the estimations. However, small data samples should not have large transfer bias when using combined transfer estimators. It is also concluded that naïvely transferring a model is not recommended, and Bayesian updating should be avoided when transfer bias exists. Copyright © 2010 John Wiley & Sons, Ltd.     

商业流程执行语言的研究与应用

商业流程执行语言(Business Process Execution Language for Web Services,简称BPEL4WS或BPEL)是一种基于XML的工作流定义语言,它使企业能够描述既能使用又能提供Web服务的复杂的业务流程.介绍BPEL4WS的基本概念,特点及如何利用BPEL4WS来构建商业流程处理系统.     

基于属性块的AutoCAD与Access数据库的连接方法

介绍以属性图块为基础、应用VBA编程实现AutoCAD与Access数据库连接的方法,为进一步实现PDM奠定基础.     

Metro commuters’ satisfaction in multi-type access and egress transferring groups

This paper considers both the access and egress stages as an entire process to analyze the satisfaction levels of commuters with metro commuter journeys. Based on a survey in Nanjing, China, seven intermodal travel groups are employed as targets for this analysis. The groups include Walk–Metro–Walk, Walk–Metro–Bus, Bike–Metro–Walk, Bike–Metro–Bus, Bus–Metro–Walk, Bus–Metro–Bus and Car–Metro–Walk, which are named according to the modes of transportation that are employed for access and egress trips. Binary logit models are developed for each group to identify the main factors of satisfaction level. The results show that access and egress stages serve important but different roles in the seven groups. Facility service qualities in two stages are the primary factors that affect overall satisfaction. The groups with same access or egress modes have significantly different core factors. Access by bike and bike–metro–transit users are concerned with bike parking safety, whereas bike–metro–walk users value parking spaces near metro stations. With two transfers between bus and metro, transit–metro–transit users indicate that the weak point in the access stage is the crowded spaces on buses. However, transit–metro–walk users value bus on-time performance, which is also valued by groups with metro–bus egress transfers. For egress by walking, commuters that use motorized modes for access are concerned with the egress walking environment, whereas users of non-motorized access modes are more concerned with egress walking spaces. The findings of this study are helpful for policy developments than can improve public satisfaction with commutes by urban metro.     

张涿高速公路分水岭隧道浅层地震勘察技术研究

通过分水岭隧道地震反射工作的实践,阐述地震反射勘探技术的工作原理、方法和工作技术要点,可供同行借鉴。     

铝合金铁道车辆的发展

文章介绍了随着铝合金等材料技术的发展,车体结构与焊接技术取得的新进展。具体阐述了车体结构从外板与骨架构成的单壳车体结构,向用空心挤压型材制成的全外壳车体结构发展的过程,以及接合技术从MIG点焊发展到摩擦搅拌焊的过程。     

邮轮旅客行李装卸工艺及设备研究

比较分析了不同工况下的邮轮旅客行李装卸工艺,提出一种通用邮轮旅客行李出舱装卸的工艺方案;以某国际邮轮码头行李装卸为例,详细阐述了该工艺布置方案,介绍了与该工艺方案配套的行李装卸设备的应用情况。