土木工程结构设计中的抗震研究

如今在建筑结构的设计中,抗震成为工程研究的重要理念。本文从当下建筑的抗震性能出发,对影响土木工程结构中的抗震因素进行研究,提出具体可行的建议,尽量解决目前存在的安全隐患,减缓地震对人们的危害。     

基于双恒流源的应变采集电路设计

针对目前恒压源应变采集系统的不足,提出了一种新颖的基于双恒流源法双端半桥测量原理的应变采集方案。论证和分析该恒流源电路用于应变采集的优点,给出了利用该测量原理设计的应变采集系统。实验室测试及在某大型风机叶片形变测试中运行表明,该应变采集系统具有较高的测量精度、稳定性、抗干扰性和可靠性。     

连通图在工程设计中的应用

在计算机上实现连通图路径最短,节省材料,使工程造价经济.     

连通图在工程设计中的应用

在计算机上实现连通图路径最短,节省材料,使工程造价经济.     

浅谈通信工程设计与监理专业的课程体系建设

由于高职院校通信专业目录的调整,新专业的课程体系构建迫在眉睫,文章从课程体系的构建原则为基础,详细阐述了如何构建通信工程设计与监理这个新专业的课程,讲述了每门课程的如何和实践相联系,学生通过该课程体系学习,能够扎实的掌握通信工程的设计、监理、施工、项目管理方面的理论知识及实践能力。     

基于模块化的220 kV变电工程设计研究

为解决220 kV变电工程设计中重复性设计工作量大、建设标准不统一的问题,提出了变电站电气部分模块化设计的理念.对变电工程设计中实行模块化初步设计进行了研究分析,把变电站电气部分分模块分别设计,再根据各个变电站的具体要求选择模块进行组合.结合实例探讨了其对提高电力工程设计质量及效率的重大意义,为设计企业的发展提供了思路.     

基于LabVIEW的数据采集与处理系统设计

为了提高数据采集系统的开发效率,减少开发成本,以LabVIEW为开发平台,设计了一套数据采集与处理系统.系统以NI-PCI6221作为采集仿真设备,采用模块化和层次化思想,进行了LabVIEW程序设计和界面设计,模拟实验了电压和温度两路信号的数据采集、实时显示、数据存储、数据处理、历史回放功能.实验仿真结果表明,基于LabVIEW的数据采集系统能够有效地实现数据采集以及在线分析处理,此外借助LabVIEW丰富的函数库,易于进行系统功能扩展.     

一种U盘存储的数据采集系统的设计

系统在微处理器ATmega32控制下,采用内置USB固件与海量存储协议的主机芯片CH375,通过USB—Host主机接口将A／D转换器TLC2543采集得到的数据存入U盘．利用红外遥控键盘,配合中文液晶显示模块OC-MJ4X8C,构建系统友好的人机交互接口．整个系统具有简单、快速、使用方便等特点．     

The impact of new learning environments in an engineering design course

In this study, we investigated the effects of students’ participation in a collaborative, project-based engineering design course on their domain knowledge, interests, and strategic processing. Participants were 70 college seniors working in teams on a design project of their choosing. Their declarative, procedural, and principled knowledge, along with their domain interest and their interest in select roles within that domain were tested at the outset of the semester and at its conclusions. Findings indicated that this course contributed to a rise in students’ declarative knowledge, but not their procedural or principled knowledge of engineering design. Further, there was no significant change in students’ personal interest in the domain over the semester, and their role interests were not associated with their demonstrated knowledge in the field at posttest. Implications for the perceived effectiveness of learning environments consisting of peer collaboration and relevant problems on students’ academic development are considered.     

Virtual engineering in design and manufacturing

Manufacturing systems of the future highly demand that the product data are built into the product model, and smooth data transfer to other computer-aided technologies are enabled. Depending on the type of the manufacturing system, it is envisaged that virtual engi- neering （VE） technologies play a significant role in inte- grating the computer-based technologies involved in the product＇s life cycle. Simulations in a virtual world and exchange of real-time product or design data are among the benefits for today＇s global oriented manufacturing busi- ness. To highlight the significance of design as carrier of product data and the key role played by VE technologies to inter-link design, manufacturing and associated compo- nents, this paper presents an overview and analysis of the state-of-the-art VE technologies to indicate potential applications and future research directions.     

Student centered teaching in engineering design

This paper reviews experience with teaching procedures introduced into an engineering design course to promote professionalism in undergraduates. One procedure used is a prize award for performance in project work and the other procedure is a Socratic style of teaching in the classroom. Both procedures intend to shift responsibility for learning away from the teacher towards the student. Student performance is measured by project results, examination results and by design studies. It is found that the use of design studies, a type of student centered examination procedure, has the most profound effect on performance in this complex subject.     

Educational objectives in engineering design courses

The article addresses the general educational concepts of engineering design together with the contrast of current instruction techniques in tertiary institutions. Work at Melbourne is reviewed in this context with particular reference to matching educational objectives to current educational theory. A case study in engineering design is evaluated against this frame of reference and some educational hypotheses are proposed. It is concluded that testing of the proposed hypotheses will require considerable research effort by design educators.     

应用型本科工科专业毕业设计质量控制方案设计

通过分析目前工科毕业设计现状及存在的问题,提出基于全面质量管理理念设计毕业设计质量控制方案,并对该方案的构建思路及在制度及文件建设、毕业设计支撑条件的完善、全程质量管理及监控、质量评价及反馈等方面的改革做了详细论述.3年实践证明,该方案对提高应用型本科工科专业毕业设计质量、培养创新型人才效果明显.     

Introducing originality and innovation in engineering teaching: The hydraulic design of culverts

Recently, the teaching of engineering design has become a presentation of standards and codes rather than the learning of sound design practices. Too many students request formulae and equations to solve a design exercise and they fail to develop any design originality. The present student attitude leads to young graduate engineers without critical ability and innovative flair. The writer has developed an innovative hydraulic design exercise based upon culvert design. Each design exercise could lead to more than one correct design per student in the class. Students have to learn basic design calculations based upon lecture material, notes, field visits and laboratory experiment. The practical component (laboratory, field visit) contributes significantly to their understanding of the complete system, including some basic safety and professional issues.     

Words of wisdom

1.Beauty in things exists in the mind which contemplates them. ——Hume事物的美存在于仔细观察者的心目中。——休谟     

New Model,New Strategies: Instructional design for building online wisdom communities

We discuss the development of an instructional design model, WisCom (Wisdom Communities), based on socio‐constructivist and sociocultural learning philosophies and distance education principles for the development of online wisdom communities, and the application and evaluation of the model in an online graduate course in the USA. The WisCom model aims to facilitate transformational learning by fostering the development of a wisdom community, knowledge innovation, and mentoring and learner support in an online learning environment, based on a “Cycle of Inquiry” module design, and a “Spiral of Inquiry” program design. Extending beyond current instructional design practice, WisCom provides both a new model for teaching that builds upon the inherent capacity of networked communication to support the growth and intellectual development of communities of practice, and a new model of learning where learners engage in the process of scholarly inquiry that supports individual and collective learning. Evaluation and research data support the WisCom model's ability to design a learning community engaged in the collaborative construction of knowledge.     

逆向工程技术在汽车仪表盘零件开发中的应用

以汽车仪表盘为研究对象,通过激光扫描仪的非接触式测量获取零件曲面的点云数据,并利用Surfacer软件进行点云数据处理,且基于NURBS曲面重构理论进行零件曲面造型,最后利用Pro/Engineer软件完成汽车仪表盘的实体模型设计.与传统的设计方法相比,提高了工作效率,缩短了新产品的开发周期.     

基于USB接口和FPGA控制的数据采集系统的设计

随着科技的发展,信号处理技术也日渐成熟。而作为数字信号处理的重要组成部分,数据采集技术在整个数字系统中起着至关重要的作用。高速、高精准的数据采集卡在实施信号处理、数字图像处理等方面的需求量越来越大。现场可编程门阵列(FPGA)的特点:时钟频率高、内部延时小、组成形式灵活等,促使其在高速数据采集方面具有压倒性的优势。将FPGA与具有即插即用、高传输速度、独立供电等特点的USB(universal serial bus)总线合用,就会使人们在数据采集中更加方便、快速。笔者根据自己的研究,谈谈基于USB接口和FPGA控制的数据采集系统的设计,望能起到抛砖引玉的效果。