Design optimization of 3D steel structures: Genetic algorithms vs. classical techniques

In this paper an elitist genetic algorithm (GA) developed by the authors is compared with common commercial solutions for complex structural optimization. After its prior validation on two-dimensional (2D) structures, the GA was tuned and improved in order to obtain structural elements with minimum weights that satisfy the ultimate limit states of the applicable building code. Subsequently, the same spatial structures were optimized using a commercial structural analysis program. Finally, the cost and weight improvements obtained using the GA, although at a higher computational cost, are discussed.     

Identifying a Design Management Package to Support Concurrent Design in Building Wafer Fabrication Facilities

Concurrent design is commonly used in building a semiconductor wafer fabrication facilities to shorten projects. Current practice in managing a design schedule involves preset milestones that represent percentages of completion. Such a simple control scheme does not provide sufficient information to support concurrent design. This study presents an analytical model that applies a cluster identification algorithm to separate the work of designing a multisystem project into management packages that support concurrent design. Tasks within a package have strong informational dependency relationships on each other, and are not suited for concurrent design. Tasks of different packages have weak dependency relationships on each other, and are suited for concurrent design. Tendering design work based on these packages may reduce the number of design interfaces between participating design firms. Possible application of the model includes the management of design schedule, design contract tendering, and design information flow.     

漫谈汽车产品的包装

从汽车外形设计、车身色彩及内装饰三个方面讨论汽车内外包装的发展现状和有关走向，并指出这方面正有迅猛的发展势头，以上起包装界和汽车设计界的高度重视。     

The thermodynamic performance of a new solution cycle in double absorption heat transformer using water/lithium bromide as the working fluids

In this paper, a new solution cycle in the double absorption heat transformer is presented and the thermodynamic performance of this new cycle is simulated based on the thermodynamic properties of aqueous solution of lithium bromide. The results show that this new cycle is superior to the cycle being studied by some researchers. This new solution cycle has a wider range of operation in which the system maintains the high value of COP and has larger temperature lifts and operation stability. The relationship between the absorber and the absorbing evaporator is more independent and this makes the operation and control of the system more easier.     

综合布线系统的设计、施工及测试

针对综合布线系统工程设计与施工中存在的问题作一简单的归纳，并提出相应的解决办法。其中解决的办法包括几点重要的内容：设计时注意用户的需求和系统的可扩展性，施工时严格按照规范施工，工程结束后要做出详细的测试方案。接地问题和线缆敷设管路的弯曲问题是在施工时很重要的。测试时应测试的内容有：远端串扰、近端串扰、综合近端串扰、结构回波损耗等。     

预热预分解系统设备的设计(一)

对预热器、分解炉、热风管道附属设备的结构尺寸、计算公式、改进方法等方面作了详细阐述。     

设计文件标准化审查工作初探

介绍了设计文件标准化审查的内容，指出了存在的问题，并提出了解决的措施。     

空间的塑造--厦门海湾公园设计

海湾公园利用植物、地形、大海与湖泊的周边环境等景观要素,运用隐喻、对比的手法,创造丰富、神秘、变化的空间,注重空间灵活的使用功能及其良好的人性化.     

Credibility and applicability of virtual reality models in design and construction

In this paper, we present the findings from an extensive study of the use of virtual reality (VR) models in large construction projects. The study includes two parts: The first part presents a quantitative questionnaire designed to investigate how VR models are experienced and assessed by the workforce at a building site. The second part includes a qualitative field survey of how VR models can be applied and accepted by professionals in the design and planning process of a large pelletizing plant. Through mainly studying persons who had little or no experience with advanced information technology (IT), we hoped to reveal the attitudes of the average person working at a construction site rather than of an IT expert. In summary, the study shows that the VR models in both projects have been very useful and well accepted by the users. Today’s information flow is, from a general point of view, considered to be insufficient and the hypothesis is that using VR models in the construction process have the potential to minimize waste of resources and improve the final result.     

旋转喷淋式干红发酵罐的设计及改进方案

介绍了一种实用新型干红葡萄酒发酵罐。它利用设置在罐顶的旋转喷淋装置对浮于液面上的葡萄皮进行间歇喷淋。解决了葡萄皮由于长期与空气接触而变质发霉的问题。与上次介绍的压板式干红葡萄酒发酵罐的区别在于：它具有制造难度小、生产成本低、维护容易等优点。适用于中小型葡萄酒厂的推广与应用。