武当武术节对十堰市旅游业的影响

阐述了节事旅游的界定,分析了武当武术节对十堰市旅游业产生的正反两方面的影响,对十堰市未来发展节事旅游提出了一些合理化建议。     

以小流域为单元综合治理水土流失

密云水库是北京城市供水的主要水源地 ,库区内有数千条小流域 ,由于水土流失严重 ,每到汛期 ,洪水挟带大量泥沙下泄 ,造成水库淤积。为改变现状 ,自 2 0 0 3年起 ,在水库上游开展以小流域为单元综合治理水土流失的工程建设 ,是防洪的基本措施 ,也是涵养水源恢复生态的基本措施。本文以承德县乱水河小流域综合治理工程为例进行论述     

桩基础抗震储备对桥梁结构抗震安全影响

地震中桩基础一旦发生损伤或破坏,会带来地震后桥梁安全排查困难和抢修时间长等问题,而且因基础加固难度大和加固成本高,还会严重影响灾后的恢复工作。因此,许多国家越来越重视桥梁基础的抗震储备。但是,这一理念在我国尚未得到普遍认识,导致我国桥梁桩基础结构普遍偏弱,其抗震储备低于桥墩。通过分析桥梁抗震设计原则,比较中日两国典型桥梁下部结构的配筋以及分析典型桥梁的非线性地震响应,阐述桩基础抗震储备对桥梁结构抗震安全影响。     

A Model of Application System for Man-Machine-Environment System Engineering in Vessels Based on IDEF0

Applying man-machine-environment system engineering(MMESE)in vessels is a method to improve the effectiveness of the interaction between equipment, environment, and humans for the purpose of advancing operating efficiency, performance, safety, and habitability of a vessel and its subsystems. In the following research, the life cycle of vessels was divided into 9 phases, and 15 research subjects were also identified from among these phases. The 15 subjects were systemized, and then the man-machine-environmen...     

A model of application system for man-machine-environment system engineering in vessels based on IDEF0

Applying man-machine-environment system engineering(MMESE)in vessels is a method to improve the effectiveness of the interaction between equipment, environment, and humans for the purpose of advancing operating efficiency, performance, safety, and habitability of a vessel and its subsystems. In the following research, the life cycle of vessels was divided into 9 phases, and 15 research subjects were also identified from among these phases. The 15 subjects were systemized, and then the man-machine-environment engineering system application model for vessels was developed using the ICAM definition method 0 (IDEF0), which is a systematical modeling method. This system model bridges the gap between the data and information flow of every two associated subjects with the major basic research methods and approaches included, which brings the formerly relatively independent subjects together as a whole. The application of this systematic model should facilitate the application of man-machine-environment system engineering in vessels, especially at the conceptual and embodiment design phases. The managers and designers can deal with detailed tasks quickly and efficiently while reducing repetitive work.     

胶体蓄电池在摩托车上的应用分析

胶体蓄电池是采用胶体电解液的阀控式密封铅蓄电池,具有优秀的深放电回复性、充放电利用率高、使用寿命长、恢复能力强等优点,随着人们对摩托车质量需求的不断提升,胶体蓄电池在摩托车上的推广应用具有广阔的前景,并将逐步取代常规蓄电池和AGM密封铅蓄电池。     

市政道路工程无障碍设计方案简介

该文结合现有无障碍设计规范,介绍了苏州市政道路工程无障碍设计与施工的方案及特点,类似经验可供相关专业人员参考、借鉴。     

水位快速变动下边坡稳定性分析

水位快速变动的库区边坡内渗流场的变化是引起边坡失稳滑动的一个重要因素。渗流场的变化一方面降低了滑带的抗剪强度参数,另一方面影响其应力场,从而导致滑坡破坏。取一理想边坡,通过FLAC3D数值模拟软件,计算得到:上升过程中安全系数随时间的变化表现为上升下降型,随水位的变化表现为下降上升型;下降过程中安全系数随时间、水位的变化都呈现为下降上升型,下降工况对边坡稳定影响最不利。     

基于遗传算法的交叉口信号配时多目标优化

为了提高城市交叉口通行能力和减少机动车尾气排放,提出了利用遗传算法实现多目标优化的方法,开发了基于遗传优化的城市交通微观仿真模型,并进行了仿真试验.仿真结果表明:这种多目标优化方法可以获得更好的交通信号控制效果和改善环境.     

城市道路交通流仿真系统研究

针对交通流仿真的热点,构建城市道路微观交通仿真模型框架,阐述模型的建模方法.在此基础上,运用面向对象思想和技术、动态内存管理和实时视景仿真技术开发了城市道路微观交通流仿真原型系统.介绍了该原型系统软件的体系结构及关键技术.通过仿真应用表明,开发的原型系统仿真效果良好.