检索结果-南通市图书馆

Review on Sol-Gel Derived Coatings: Process, Techniques and Optical Applications

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2002年第3期18卷 211-218页

作者： S.M.Attia juewang 等 PohlInstituteofSolidStatePhysics TongjiUniversityShanghai200092China Phys.Dept.FacultyofEducation KaferEl-SheikhEgypt

Sol-gel process is one of the simplest techniques to manufacture thin films. The quality of the prepared films depends on the parameters of the sol-gel process and the used technique for deposition. A great variety of the sol-gel derived films have been prepared for different applications. We present a review on the sol-gel derived coatings. The description of the process is introduced in details. Different sol-gel deposition techniques are mentioned. The optical applications of the sol-gel derived coatings are reviewed.

关键词： Sol-gel process Coating Thin film

AN EXTENSION OF TOPSIS FOR FUZZY MCDM BASED ON VAGUE SET THEORY

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Science and Systems Engineering 2005年第1期14卷 73-84页

作者： juewang San-YangLIU JieZHANG DepartmentofMathematics XidianUniversiy

This paper extends the TOPSIS to fuzzy MCDM based on vague set theory, where the characteristics of the alternatives are represented by vague sets. A novel score function is proposed in order to determine the vague positive-ideal solution (VPIS) and vague negative-ideal solution (VNIS). We present a weighted difference index to calculate the distance between vague values, by means of which the distance of alternatives to VPIS and VNIS can be calculated. Finally, the relative closeness values of various alternatives to the positive-ideal solution are ranked to determine the best alternative. An example is shown to illustrate the procedure of the proposed method at the end of this paper. Keywords TOPSIS - fuzzy set - vague set - score function - fuzzy MCDM Jue Wang received the B. Sc degree in mathematics from Qingdao University, 2000. From August 2000, she has been pursuing his Doctor degree in Xidian University, Xi’an, China. Her research interests include optimization theory and applications, intelligent information processing, rough sets theory and application in data mining, signal processing, etc. She has published over ten journal and conference papers.San-Yang Liu was born in Xi’an, China, in 1959. From 1985 to 1989, he was with the department of mathematics of Xi’an Jiaotong University, where he received the Ph. D. degree in Mathematics. He is currently a professor and Doctor advisor at the Xidian University. His interests include optimization theory and applications.Jie Zhang was born in Huaibei, Anhui province, P.R. China., in 1975. He received his B. Sc. in Applied Mathematics, in 1999 from Anhui Normal University and M. Sc. in Operation Research, in 2002 from Xidian University. From 2002, he has been pursuing his Doctor Degree in the National Key laboratory for Radar Signal Processing, Xidian Univ. His research interests lie in the area of signal and information processing with application to wireless communications.

关键词： TOPSIS fuzzy set vague set score function fuzzy MCDM

Electrochromic Properties of Sol-gel Deposited V_(2)O_(5) and TiO_(2)-V_(2)O_(5) Binary Thin Films

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2001年第4期17卷 417-420页

作者： QinyuanZHANG CuangmingWU BinZHOU JunSHEN juewang ZhonggangWU XiaohongJI PohlInstituteofSolidStatesPhysics TongjiUniversityShanghai200092China DepartmentofElectronicInformationMaterials ShanghaiUniversityShanghai201800China

Transparent mixed phase (1 - x)V2O5-xTiO2 (x=0,01,0.2,0.3,0.4) thin films were prepared on indium tin oxide (ITO) coated glass via sol-gel process. The films were characterized by cyclic voltammetry, optical spectroscopy, scanning electron microscopy, IR and X-ray diffractometer. Electrochemical lithium insertion/extraction showed that the porous structure of sol-gel (1 - x)V2O5-xTiO2 thin films exhibited good recharge ability of Li+/e- insertion/extraction process. For a 220 nm thick (1 - x)V2O5-xTiO2 film with 90% V2O5, the capacity of charge exchange reached 9 mC/cm2. In both Li+ intercalated and free states, the films were highly transparent to visible light. Such films have potential applications in counter electrodes for electrochromic smart windows and other electrochemical devices.

关键词： vanadium batterie annealed transmittance coated heated lithium crystalline titania precipitate

在线全文

学校读者我要写书评

暂无评论

基于MAS的CWE计算框架关键技术研究

计算机工程与应用 2007年第19期43卷 202-205页

作者：彭小波冯平 juewang 深圳大学机电与控制工程学院广东深圳518060 英属哥伦比亚大学机械工程系加拿大

CWE(Cutter/Workpiece Engagement)计算是加工过程仿真与优化研究中的一个重要问题。在CWE计算过程中,工件模型不断被更新,其几何越来越复杂,计算开销越来越大。为了提高CWE计算的效率,提出了一个基于MAS(Multi-Agent System)的CWE计算... 详细信息

CWE(Cutter/Workpiece Engagement)计算是加工过程仿真与优化研究中的一个重要问题。在CWE计算过程中,工件模型不断被更新,其几何越来越复杂,计算开销越来越大。为了提高CWE计算的效率,提出了一个基于MAS(Multi-Agent System)的CWE计算方法。该方法将CWE计算的任务加以分解,利用Internet/Intranet中的各个Agent进行分布式计算,对计算的结果进行组装得到最终结果。最后给出了原型系统的实现和一个实际计算的例子。

关键词： CWE 虚拟加工 MAS

在线全文

学校读者我要写书评

暂无评论

Reduct与属性序

Journal of Computer Science & Technology 2004年第C期19卷 14-14页

作者： Su-QingHan juewang LaboratoryofComplexSystemsandIntelligenceScience InstituteofAutomationTheChineseAcademyofSciencesBeijing100080P.R.China

基于差别矩阵的属性序约简算法可以理解为基于给定信息系统，从属性序空间Θ到reduct空间R的映射R=Reduct(S)。这种算法被证明为对reduct是完备惟一的。如果给定一个属性序，把求其reduct的问题称之为约简问题，那么给定一个reduct，求S... 详细信息

基于差别矩阵的属性序约简算法可以理解为基于给定信息系统，从属性序空间Θ到reduct空间R的映射R=Reduct(S)。这种算法被证明为对reduct是完备惟一的。如果给定一个属性序，把求其reduct的问题称之为约简问题，那么给定一个reduct，求S=Order(R)

关键词：约简算法从属性差别矩阵映射信息系统问题