三维结构可靠度对随机变量的敏感性研究

本文基于三维随机有限元提出了结构点可靠度、失效模式的可靠度及整个结构体系的可靠度分别对随机变量的＂分布参数＂和＂极限状态方程参数＂的敏感性计算方法，并以一典型重力坝为例进行了计算，得出了若干有益的结论。     

Fuzzy-Fusion Classifier for MMV Full-Polarization Radar Target Recognition Using One-Dimensional Scattering Centers

One-dimensional (1-D) scattering centers on a target can be used for radar target recognition purpose. In this paper, a new classifier based on fuzzy techniques is proposed, which is very much suitable for target recognition using 1-D scattering centers. Furthermore, information fusion techniques for full polarimetric receiver data are utilized at the decision level. The performance of the proposed fuzzy-fusion classifier is evaluated using a dataset of five aircraft models measured by millimeter-wave (MMW) full-polarization stepped-frequency radar in the compact range facility.     

烧结通用配料计算软件系统的开发

本文介绍了烧结通用配料计算软件系统的总体结构，软件的功能及其设计特点，该软件已在多个烧结经验中得到成功应用。     

烟用香料配制的气相色谱法质量控制研究

采用气相色谱法对香料房卷烟用料液中的溶剂及水分进行检测,分析测定其中的水分、乙醇、丙二醇、山梨醇等的含量,通过对香料房每批配制料液的抽检,可以跟踪料液配制的准确性,保证卷烟产品质量,该方法操作简单、准确性高、重现性好。     

二氧化氯处理油田回注水工艺

针对中原油田回注水中细菌易产生抗药性,难以控制的问题,提出了应用二氧化氯处理油田回注水工艺。经室内评价及现场试验,二氧化氯可杀死回注水中的细菌,控制微生物生长,同时该工艺可降低现有回注水污泥残渣产出量的50%,减少污泥对环境的污染,提高注水水质。     

Feature-based classifiers for design optimization

We present a design optimization method for systems with high-dimensional parameter spaces using inductive decision trees. The essential idea is to map designs into a relatively low-dimensional feature space, and to derive a classifier to search for high-performing design alternatives within this space. Unlike learning classifier systems that were pioneered by Holland and Goldberg, classifiers defined by inductive decision trees were not originally developed for design optimization. In this paper, we explore modifications to such classifiers to make them more effective in the optimization problem. We expand the notions of feature space, generalize the tree construction heuristic beyond the original information-theoretic definitions, increase the reliance on domain expertise, and facilitate the transfer of design knowledge between related systems. There is a relatively small but rapidly growing body of work in the use of inductive trees for engineering design; the method presented herein is complementary to this research effort.     

丙烯腈急冷塔喷淋系统流道分析与优化

对国内现有丙烯腈装置急冷塔循环液喷淋器的分流流道进行了研究。对喷头堵塞情况作了理论分析，并运用计算机编程模拟计算出喷淋器中各喷头的流体分布情况。在此基础上提出了分流流道的优化方案，从而改善了急冷塔内的操作状况，减少了丙烯腈在急冷塔内的损失。     

AN improved method of optimization for electrical machines

Methods of optimizing the design of electrical machines are discussed. The augmented Lagrangian multiplier method is described, and an algorithm for this method is introduced. The method is compared with the more familiar exterior penalty function method using, as an example, the cost optimization of permanent magnetic variable-speed drive motors. The improved method is shown to be superior, both in its ability to reach an optimum consistently and in the number of required iterations