地基设计基本原则的探讨

地基设计是整个建（构）筑物设计中的重要组成部分，它关系到建（构）筑物的安全及其功能能否正常发挥。本文着重分析探讨了在地基设计中应遵循的原则及注意事项。以保证建（构）筑物的安全和正常使用，充分发挥地基的作用。     

矢量图的参数化重建系统——VACAD

本文重点探讨了如何将矢量图形进行参数化重建，即从只具备纯几何信息的矢量图中抽取元素间的拓扑信息，从而保证尺寸变动时保持拓扑关系不变，并能对多视图进行同步处理。这一方法的最大优点是用户作图时不受约束，因为系统只处理最终图形。另外，该思想并不局限于Ａｕｔｏ ＣＡＤ环境上，可方便地推广到其它二维绘图系统中。     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

面向大规模定制的虚拟设计研究

综述了大规模定制的范围经济性和面向大规模定制的基本设计方法，并提出了一个虚拟设计框架，该框架改变了传统的设计模式，利用先进的设计方法学和仿真支撑技术为产品开发提供了最大柔性和敏捷性。同时，它提供了一个多学科合作的设计环境，用户直接参与进设计循环中。最后，结合新型剑杆织机的开发，展示了一个能够支持新产品快速成功开发的虚拟设计环境。     

Constraint Databases: Promising Technology or Just Intellectual Exercise?

This paper describes the state of Constraint Databases (CDBs), a young discipline at the intersection of Database Management, Constraint Programming, Computational Geometry and Operations Research. As in Constraint Logic Programming, constraints in CDBs are a first class data type, and can play many modeling roles including spatial and temporal behavior, complex design requirements, and partial and incomplete information, for which existing databases have proven inadequate. We motivate the importance of CDBs, outline the work in the area that has been done, the current trends, and future directions and challenges. We briefly discuss (1) constraint modeling, canonical forms and algebras, (2) data models and query languages, (3) indexing and approximation-based filtering, (4) constraint algebra algorithms and global optimization, and (5) systems and case studies. We argue that CDBs are a promising technology that will impact many important application realms, and furthermore have the potential to be integrated into future database systems, and operations research and constraint programming tools.     

一种新型宽频带正交线极化馈源设计

本文介绍一种适用于散射通讯用的前馈抛物面宽频带正交器双线极化馈源设计,该馈源工作于0.8GHz频段。实践证明,该馈源在20％的工作带宽内基本上具有近似于旋转对称的波束,且系统VSWR<1.3。因此,对工作于较低频段的天线,该馈源是很好的选型。     

催化裂化装置中旋流快分系统（VQS）的结构设计

阐述了全渣油催化裂化装置反应器中旋流快分系统(VQS)的工作原理,对其受力情况进行了分析。较详细介绍了放流快分系统的支撑结构形式,并就支撑梁(焊接工字钢)的选材、几何尺寸进行了详细的分析与比较。     

Definition of a multimaterials design method

Although methods of product design and materials selection have been developed, the recent rise of multimaterials (composites, hybrids, etc.) has shown a lack of tools for engineering in this domain. The present contribution aims at the development of a multimaterials design method based on the adaptation of existing methods and on the conclusions of a case study. In comparison with materials selection, the originality of multimaterials design relates to searching materials coupling mechanisms to satisfy a set of requirements. More, it appears that manufacturing process and validation tests are very important points that must be integrated early in the design process.     

建安工程扣件式钢管脚手架作业中安全技术的应用

扣件式钢管脚手架应用代表着建筑工业化的一个重要发展方向 ,如何安全、规范地使用扣件式钢管脚手架将是我们标准化施工的新课题     

Product Platform Identification and Development for Mass Customization

This paper is mainly concerned with the Identification of an embryonic product platform from a family of products whose composition, configuration and characteristics are represented by Attributed Graphs. The problem becomes that of identifying the largest isomorphic sub-graph with the highest similarity. An algorithm is proposed for solving this problem together with several novel concepts.