基于ActiveX的CTCS3信号纵断面图自动生成的实现

介绍一种在MFC环境下,利用ActiveX自动化技术开发AutoCAD的新方法,有效地解决Object ARX开发版本不对应的问题.探讨在AutoCAD 2006平台上自动生成信号纵断面图的实现方法和绘制流程,分析VARIANT数据类型以及图块在绘图设计中的应用.设计实现信号纵断面图的自动绘制,提高绘图效率和精度.     

CFG桩复合地基设计要点及施工质量控制

CFG桩复合地基是中国建筑科学研究院地基所20世纪80年代末开发的一项新的地基加固技术,在工民建部门得到推广,近年来,在高速公路建设中开始用于桥头高路堤的软基处理,以解决桥头跳车问题。本文结合河北省邢(台)衡(水)高速公路桥头高路堤的软基处理,对CFG桩等复合地基进行方案比选,并介绍了CFG桩的设计、材料配合比设计以及CFG桩的施工工艺和质量检验。可供同类工程参考。     

Improved Social Emotion Optimization Algorithm for Short-Term Traffic Flow Forecasting Based on Back-Propagation Neural Network

The back-propagation neural network(BPNN) is a well-known multi-layer feed-forward neural network which is trained by the error reverse propagation algorithm. It is very suitable for the complex of short-term traffic flow forecasting; however, BPNN is easy to fall into local optimum and slow convergence. In order to overcome these deficiencies, a new approach called social emotion optimization algorithm(SEOA) is proposed in this paper to optimize the linked weights and thresholds of BPNN. Each individual in SEOA represents a BPNN. The availability of the proposed forecasting models is proved with the actual traffic flow data of the 2 nd Ring Road of Beijing. Experiment of results show that the forecasting accuracy of SEOA is improved obviously as compared with the accuracy of particle swarm optimization back-propagation(PSOBP) and simulated annealing particle swarm optimization back-propagation(SAPSOBP) models. Furthermore, since SEOA does not respond to the negative feedback information, Metropolis rule is proposed to give consideration to both positive and negative feedback information and diversify the adjustment methods. The modified BPNN model, in comparison with social emotion optimization back-propagation(SEOBP) model, is more advantageous to search the global optimal solution. The accuracy of Metropolis rule social emotion optimization back-propagation(MRSEOBP) model is improved about 19.54% as compared with that of SEOBP model in predicting the dramatically changing data.     

高速公路桥梁施工中高墩施工技术要点研究

高速公路桥梁工程建设中高墩部分的实施对于确保整个工程的安全性、稳定性以及持久性起着重要作用,高墩施工质量的好坏直接决定了高速公路桥梁的运行寿命。针对当前高速公路桥梁施工中高墩施工普遍存在的事实,对高墩施工技术进行分析,对于科学化建设工作的进行具有一定的借鉴意义。     

开关装置的现状与展望

在供电网络中，作为主要设备扣低压开关装置（８４ｋＶ以下）及其应用该产品的配电设备的质量要求很高。这种要求可以用集成化和智能化这两个词来表示。另外，其功能和构造要综合化，并采用能工程来实现高功能化。     

纽约地铁列车的信息技术

简述纽约地铁列车的通信系统.着重介绍监视系统的功能、构成及其画面显示.     

京沪高速铁路建设项目经济效益的研究

文章结合京沪高速铁路运量预测，根据不同的建设方案，对京沪高速铁路各种经济效益进行了分析预测。     

修建京沪高速铁路的意义

通过分析日本新干线铁路系统结合我国实际情况，阐述了修建京沪高速铁路的意义。