应用数据挖掘技术的土建工程概算平台规划

在吸取工程造价计算实践经验和最新算法研究成果的基础上设计出一套应用数据挖掘技术的工程概算平台规划的总体架构,该平台用以计算土建工程概算,从而有效控制建设项目的投资.主要介绍了数据挖掘中的关键点,概括了建模时选择的算法及实现算法仿真的程序,并重点对基于C/S结构的土建工程的概算平台的规划进行了研究.     

Computer-aided design in civil engineering

The paper reviews the development and current status of computer-aided design (CAD) in structural-engineering, a branch of civil engineering. The Similarities to and differences from electrical engineering practice are emphasized. The presentation deals first with well-developed CAD application areas, namely those supporting analysis, component selection and the preparation of design documents, Problematic areas, still subject to intense research, in synthesis, optimization, the representation of design specifications, the use of databases and the role of software engineering tools are briefly described.     

Smart structures and applications in civil engineering

This paper examines the issue of instrumentation for civil structures and in particular discusses the role of sensing systems in the evolution of the smart building concept. The sheer size of most structures of interest presents its own technological challenge in designing a suitable sensing architecture which will also conveniently address the area to be covered and will also provide sufficient sensing points to adequately characterize the structure under test. In addition, the measurement problem itself, which comprises both process monitoring and in use assessment must be defined. The former is very much process specific and may range from assessing whether concrete is dry to ensuring that protective materials are properly installed. The latter is almost entirely concerned with providing an alarm for either the onset of unacceptable corrosion within the structure or the appearance of physical damage for example due to foundation failure. This paper presents an analysis of the principal issues which the civil engineering smart structure must address and derives generic system specifications. It continues to argue that fiber optic solutions are the most appropriate sensing technologies and examines a number of distributed fiber optic technologies which enable both physical and chemical parameters to be addressed throughout a large structure     

Bibliography of literature on reliability in civil engineering

This paper presents a brief introduction and an extensive list of selective references on civil engineering reliability with an emphasis on structural reliability and associated topics.     

土建工程施工图审查的常见问题分析

当代社会,随着经济的快速发展,建筑行业也随之越来越兴盛。人们对不同建筑的要求也越来越高,要克服各种施工的困难,考虑建筑环境的安全、实用性等,这就对土建工程施工图的审查越来越严格。经济的发展带动各个行业的发展,也促进了建筑行业的发展,但由于对土建工程施工图的审查是从20世纪才开始的,不同的审查结果受审查员的专业水平和地区差异的影响而有所不同,审查的质量直接与工程质量相关。因此,如何完善施工图的审查以及确保工程质量的任务相当重要。文章从审查施工图的内容,出现的常见问题以及如何应对这些问题的措施方面展开。     

微信架构下网络学习平台的学习路径设计与实现研究

远程教育中,教师教学与学员学习在时间和空间上未必一致,如何能象面授教育那样有效地实时引导和监督学员学习是一个重要问题.教师制作的教学资源,应该有逻辑地放置在学习平台上,允许教师定义学习路径,从而使远程教学更加符合教学规律,有效解决远程教学效果,提升教学质量.本文详细研究了微信架构下网络学习平台学习路径的设计与实现方案.     

核电工程设计平台同步协同应用

目前核电业务呈多路线、多基地的发展趋势,加上核电工程设计工作量巨大、专业分工精细的特点,使得异地间的相关专业在核电工程设计中出现越来越多的交叉设计,导致各专业间的提资频率越来越密集.如何缩短各地之间工程设计数据的同步时间,甚至做到工程设计数据实时同步,是核电工程异地协同设计领域值得研究的问题.从系统验证的角度出发,利用现有流行的虚拟化技术对核电工程专业设计同步协同进行一次深入探索和验证,在原有设计平台架构的基础上增加一套辅助接入平台,实现远程用户接入并进行核电工程协同设计.研究成果对后续设计生产平台升级与优化具有指导性意义.     

合成孔径雷达三维有源欺骗干扰

该文提出对合成孔径雷达实施三维有源欺骗干扰,因为传统的二维有源欺骗干扰不能对抗具有三维观测能力的干涉合成孔径雷达.与仅需使用一台干扰机的二维有源欺骗干扰不同,三维有源欺骗干扰的实现依赖于两(或多)个干扰机的配置.文中对三维有源欺骗干扰的误差进行了分析.最后,文章对有源欺骗干扰的图像自然衔接问题进行了讨论,通过压制真假图像的衔接边缘,可以解决欺骗图像与真实图像的自然衔接问题.     

The Space Shuttle: a case of subjective engineering

NASA's approach to risk management, which until the Challenger accident focused on design-oriented techniques rather than probabilistic risk analysis (PRA), is discussed. Political factors that have played a large role in shaping NASA's decisions, along with its traditional-engineering-based corporate culture, are examined. NASA's present experiments with PRA, which are hampered by lack of statistical data, are described. Implications for the future Space Station are also considered     

SPCE061A型单片机在土木工程测温仪中的应用与设计

介绍一种基于SPCE061A型单片机、DS18B20型单线数字温度传感器、1602型液晶显示器和SPR1024型存储器的测温系统在土木工程智能测温仪中的应用.给出了其硬件及软件设计,实现了混凝土温度的测量、显示、存储与PC的数据传输.     

The structure of scientific and engineering papers: a historicalperspective

Many technical style guides and handbooks recommend the use of a `topical structure' for reporting original results from experimental research. This structure typically follows the sequence: heading, abstract, introduction, experimental details, results, discussion of results, conclusions, acknowledgements, and references. Slight variations in this basic structure are also employed in reporting the development of a novel device, material, method, or theory. An overview on how each element of the topical structure evolved to its present state is presented     

基于SVN的软件工程课程设计平台研究

课程设计在软件教学中起着重要的作用。目前,高校的课程设计越来越注重培养学生的团队协作能力,所以对其管理与考核也应考虑团队化。文章基于SVN技术设计一个课程设计教学平台,以Web为操作界面,利用PHP调用shell指令对SVN进行有效控制。指导教师可利用该平台对学生进行分组、布置任务、查看源码、生成考核报表。学生可利用该平台实现任务分工、提交代码。     

基于专用芯片的密码工程实验平台的设计

针对当前高校密码工程教育缺少有效的实验平台的问题,设计了基于通用密码安全芯片的软硬件结合的实验平台。以SoC技术为依托,平台硬件设计了安全控制器模块、ARM模块和FPGA模块三个部分。平台的软件设计遵循实践教学规律,构建了符合微软规范的CSP,并开发了若干实验例程。实践表明,该平台不仅让学生全面的掌握密码工程的相关知识,而且增强了学生的工程实践能力和创新能力。该实验平台对提升密码工程教学效果具有重要意义。     

隧道工程交通控制指标与仿真平台研究

文章通过对山岭地区隧道工程的交通环境和行驶环境进行详细分析,提出隧道工程交通控制的主要方法与措施,并介绍了隧道交通控制应急预案仿真与训练平台,为山岭地区隧道工程的安全运营管理提供科学的依据和方案。     

基于ExtJS和SSH2的软件工程资源共享平台

文中采用Struts2、Spring、Hibernate、和Ext JS等技术设计并开发一个基于B/S模式的软件工程资源共享平台,该平台主要实现用户管理模块、基础资源管理模块、考试系统模块、作业系统模块、实验系统模块、知识检索模块、问答系统模块和资源共享模块等功能。开发的系统改变了传统的教学方式,为广大师生提供更加方便快捷的学习空间。学生可以在该平台上查看本课程的信息,提问问题并进行作业、实验、考试等教学活动;老师可以在该平台对学生的基本信息、作业、实验、考试等信息进行管理等。实验表明,该系统具有操作简便、移植性强、加载速度快和易扩展等优点,达到了设计要求。     

Web-based surveys for corporate information gathering: a bias-reducing design framework

The cost effectiveness of Internet-based communications in the ever more fully networked business environment continues to drive the use of Web surveys for corporate information gathering. However, simply applying traditional survey techniques to the Web can result in significant shortcomings in the data so gathered. Recent research has been directed at these issues, within the context of Web surveys as a general research tool. We discuss the application of that research to the narrower organizational context. This article synthesizes from the literature on Web-based surveying and from the authors' own experiences. It suggests a design framework for managers and communications professionals interested in increasing the statistical validity of Web surveys deployed in an organizational context. The results of a recent organizational Web survey developed and administered within the framework guidelines support the efficacy of the framework.     

Er^3＋—Yb^3＋双掺杂有源光纤

报道了制造Ｅｒ＾３＋－Ｙｂ＾３＋双掺单模有源光纤的溶液掺杂技术，此光纤经紫外辐照后中收峰处损耗明显增加，而低损耗区损耗几乎不变。对激光器件应用而言，认为几百ｐｐｍ浓度和Ｙｂ＾３＋：Ｅｒ＾３＋＝２０：１掺杂比是合适的。探讨了Ｅｒ＾３＋和Ｙｂ＾３＋能级间相互跃迁机理，通过二者的交叉驰豫提高了泵哺吸收带范围和热稳定性。     

Active RC realisation of a 3rd-order lowpass Butterworth characteristic

Two realisations of the 3rd-order lowpass Butterworth characteristic are discussed, in which all the capacitances, as well as all the resistances, are equal. The sensitivities of these circuits are evaluated and compared with those of the Huelsman realisation, in which only the capacitors are equal. It is shown that, from the sensitivity point of view, the Huelsman circuit is poorer than either of the two circuits discussed here.     

Web E-speak: facilitating Web-based e-services

E-Speak, Hewlett-Packard's e-services initiative, is an open, distributed platform that lets e-services dynamically and securely advertise, discover, and interoperate with each other. Web E-Speak, the gateway to E-Speak on the Web, facilitates engineering Web-based e-services by taking into account their requirements for dynamic ad-hoc discovery, secure interaction, and global accessibility     

The internationalization of engineering education: a tale of two countries

Two international exchange programs in engineering between universities in Japan and Canada, are described in order to explain the significant benefits gained by the undergraduate and graduate students, as well as the academic staff who participate, and to highlight key principles generally followed in the design and execution of exchange programs. One notable and successful engineering exchange program is between the University of Waterloo, located in Southern Ontario, Canada, and Tottori University in Japan, while the other is between the University of Waterloo and Kyoto University in Japan. Both of these programs include foreign students taking courses for credit or audit at the host university, and, for the case of graduate students, also receiving guidance in their research. Moreover, upon completion of one academic semester in Japan, all of the undergraduate Waterloo students studying at Tottori University are employed in Japanese industry for three to four months before returning to Canada. Of paramount importance to the education of the participating undergraduate and graduate students is the opportunity to learn, by first-hand experience, the language and culture of a foreign country. In fact, one of the key findings of a survey completed by Canadian and Japanese students who took part in the exchange programs, is that living in a different culture greatly enhanced their own personal development. The addition of this international perspective to a solid education in engineering opens many doors of opportunity for exchange program alumni, who are well prepared to fully participate in the global marketplace of the 21st century, and to assist society in responsibly reaching an equitable and sustainable future.