基于GIS的道路交通安全管理与评价系统的设计及实现

从当前道路交通管理部门的实际需求出发，确定了基于GIS的道路交通安全管理与评价系统的目标和功能划分，提出了系统设计方案和实现方法。系统采用集成二次开发的方法，以Visual C 为开发平台，通过OLE技术调用GIS工具软件MapInfo来实现。并以某城市道路交通安全分析为对象建立了道路交通安全管理与评价系统，实现了事故空间分布显示、事故因素分析和交通安全等级评价等功能。     

箱型拱桥分节段安装斜拉扣挂计算

利用SAP2000软件有限元的方法进行箱型拱桥分节段安装斜拉扣挂计算,能够得到可靠的扣索索力结果,为选择合适的扣索提供依据。并能得出各施工阶段拱箱的受力,以便对拱箱在施工阶段中进行验算,保证拱箱在施工阶段的安全性。     

中俄合建黑龙江大桥总体设计

对拟建的黑龙江大桥总体设计方案进行论述 ,并同时对施工方案也进行了介绍     

Coordination of last train transfers using automated fare collection (AFC) system data

This paper studies last train coordination problem for metro networks, aiming to maximize the total number of passengers who can reach their destinations by metro prior to the end of operation. The concept of last boarding time is defined as the latest time that passengers can board the last trains and reach final destinations. The corresponding method for calculating last boarding time is also put forward. With automatic fare collection system data, an optimization model for coordinating last trains is proposed. The objective function optimizes the number of passengers who can reach their final destinations during the train period using departure times and headways of last trains for each line as decision variables. Afterwards, an adaptive genetic algorithm is put forward to solve this model and is applied to a case study of the Shanghai metro system. Copyright © 2017 John Wiley & Sons, Ltd.     

Status Quo and Future Development of Shanghai Air Cargo Industry

Air cargo industry has become a new growth point of Shanghai economy. It also plays an important role in China's air cargo transport. This paper analyzes the air cargo industry status quo and future trends from the aspects of Shanghai airport, cargo facility, air cargo traffic (ACT) and its structure. Then it prospects Shanghai airport and its cargo facility's future development. After that it completes the regression analysis and elastic analysis of air cargo traffic and total foreign trade value (TFTV) with SPSS software. Based on this, it forecasts the future trend of air cargo traffic. The results show that Shanghai airport serves beyond the scope of Yangtze River Delta, air cargo traffic has significant imbalance and will grow to around 5.3 million tones with TFTV growth by the end of “twelfth five-year” period though slower than TFTV, and the airport cargo facilities can accommodate the air cargo industry development. Finally, some useful countermeasures for stimulating Shanghai air cargo industry are put forward.     

数字信号相关法在船闸人字闸门母材厚度测量中的应用

针对超声测厚的精度问题,分析了超声回波时间差的识别计算方法,并提出了一种基于最小二乘多项式拟合的方法来提取相关系数峰值。该方法可兼顾回波时差的计算精度和计算复杂度,得到较准确的时差计算值。该方法应用到湘江二级航道二期工程二线船闸人字闸门母材厚度测量中,测量结果准确可靠,为人字闸门等金属结构的质量控制提供准确的数据支撑。     

城市车轨道交通列车自动监控系统

介绍了列车自动监控系统在城市轨道交通应用情况，分析了ATS系统的组成结构和控制系统，并对ATS系统的功能进行了论述。     

光缆接头器安装工艺的改进

我国光缆线路工程按照平原设计规范安装接头器工艺的改变,在长江重庆通信管理局涪陵处得到了全面的应用,该处经过对接头器安装工艺的改变,在日常生产中保证了光缆线路的光传输特性,减少了光传输特维护资金、人力和物力。     

水泥混凝土路面早期裂缝成因及防治措施

水泥混凝土路面的早期裂缝严重影响路面的使用寿命及效果。文中分析了早期裂缝的成因，并有针对性地提出了相应的防治措施，对水泥混凝土路面的施工有一定的参考作用。     

分局级计算机工作存在的问题及解决途径

杭州分局计算机工作在各级领导的关心和有关部门的相互支持下发展迅速。计算机技术已逐步走向运输生产第一线与生产、经营、管理相结合,成为铁路运输生产不可缺少的管理和技术手段。为了更好地发挥计算机技术在铁路运输生产中的怍用,针对分局计算机网络系统工作进行了调查。