电子通道技术在YBa2Cu3O7外延超导薄膜研究中的应用

本研究采用电子通道技术（ＥＣＰ）对单晶和双晶外延生长的ＹＢａ＿２Ｃｕ＿３Ｏ＿７（ＹＢＣＯ）超导薄膜的结构、取向和表面完好性作检测，并证实对衬底的预处理可改善外延超导薄膜的质量；还对ＹＢＣＯ／ＣｅＯ＿２／ＭｇＯ／ＳｒＴｉＯ３的双外延薄膜作研究。     

An extension of the Secant Method for the homogenization of the nonlinear behavior of composite materials

We discuss the consequences of a different application of the principle the Modified Secant Method is [C. R. Acad. Sci. Paris Sér. IIb 320 (1995) 563] based on. In fact, we directly compute the second-order averages of the local fields available from the linear elastic homogenization procedure exploited in order to evaluate the effective elastic moduli. This method, which can be seen either as a simplification of the Modified Secant Method or as an extension of the Secant Method [J. Mech. Phys. Solids 26 (1979) 325], may be useful for any composite whose overall elastic constants need to be estimated by modeling the microstructure through Morphologically Representative Patterns [J. Mech. Phys. Solids 44 (1996) 307], which is for instance the case of syntactic foams [Int. J. Solids and Structures 38/40-41 (2001) 7235]. In order to show the accuracy of the proposed method, we apply it to several examples and compare its results with those obtainable by means of other analytical methods available in the literature, with numerical results of Finite Element simulations, and with experimental results. Closed-form solutions are derived for the effective yield stress of porous metals and incompressible composites reinforced with rigid spheres.     

服装实验课程“双主”教学模式研究

文章深入分析服装实验教学现状及存在的问题,提出在服装实验课程中实行"双主"教学模式,从教学内容、方法与手段等方面进行改革,并就教学成效进行对比。"双主"教学模式在服装实验课程中的应用,在发挥教师主导作用的同时,有利于充分发挥学生的主体作用,调动课堂积极性,教学效果显著。     

浅析波普艺术中的装饰语言

从人类运用艺术来表达感情和生活始,装饰与艺术便如影随形。波普艺术作为重要的艺术流派,其中的装饰语言值得人们探究。本文以波普艺术为切入点,重点从装饰图案的角度解析波普艺术中的装饰语言。结合产生的背景,分析波普艺术采用装饰图案的产生原因;再以色彩、形式等方面分析波普风格装饰图案的特征,寻求波普艺术视觉审美中的亮点,以期能对中国当代设计艺术有所启发与帮助。     

设计模式在地质统计学建模软件的应用

针对构建具有自主知识产权的地质统计学建模软件的需要,设计该软件的基本结构.通过定义对象管理树、被管理时象和管理对象等概念,将设计模式的方法引入到该软件的设计和实现中,并给出了工厂方法的具体实现.该研究可以提高建模软件的代码复用、可靠性和可扩展性.     

基于设计模式数据访问组件的设计和实现

阐述软件设计模式的概念及其作用,并分析了.NET平台ADO.NET的特点,运用抽象工厂和外现两种设计模式对数据访问组件进行了设计和实现,实现了业务层和数据层的连接,达到了较好的通用性、扩展性和维护性.     

.Net平台下Visitor模式的研究

设计模式可以用来解决软件设计过程中反复出现的问题,因此具有一定的普遍性,同时与开发平台也是密切相关的。在不同的开发平台上,设计模式的实现方式往往会有很大的差别。在面向对象设计理论指导下,通过分析Visitor设计模式的优缺点,提出了在.Net平台下的改进方案。该方案降低了各个类之间的耦合度,使Visitor模式的使用更加简单灵活。对于文中每一种模式,都给出了UML类图和C#实现的代码片断。     

基于兴趣点多特征融合的物体识别方法

提出一种基于兴趣点多种特征融合的物体识别方法。利用简化的局部二值模式算子去除Harris冗余角点,提取感兴趣区域的3种特征并加权融合特征,在K最近邻(KNN)方法中引进加权因子计算特征距离函数,得到合适的分类器。实验结果表明,该方法能有效提高物体识别的正确率。     

Design patterns for user interface for mobile applications

The topic of this paper is a collection of user interface (UI) design patterns for mobile applications. In the paper we present the structure of the patterns collection – the patterns are suggested solutions to problems that are grouped into a set of problem areas that are further grouped into three main problem areas – a structure which is valuable both as an index to identifying patterns to use, and it gives a fairly comprehensive overview of issues when designing user interfaces for mobile applications. To show the breadth of the patterns collection we present six individual problems with connected design patterns in some detail – each coming from different problem areas. They represent important and relevant problems, and are on different levels of abstraction, thus showing how patterns may be used to present problems and solutions on different levels of detail. To show the relevance and usefulness of the patterns collection for usability professionals with a mixed background, we present some relevant findings from a validation of the patterns collection. In addition to verifying the relevance and usefulness of the patterns collection, it also shows both expected and surprising correlations between background and perceived relevance and usefulness. One important finding from the validation is an indication that the patterns collection is best suited for experienced UI developers wanting to start developing mobile UIs. Using a patterns collection for documenting design knowledge and experience has been a mixed experience, so we discuss pros and cons of this. Finally, we present related work and future research.     

设计模式与MFC中的文档一视图结构

Patterns ,one of hot topics in object oriented fields are introduced in this paper ,including theconcept of patterns, the classification of patterns and its impacts on software development. This paperemphasizes on design patterns. Observer Pattern is introduced and is used to explain the Document-View structure in MFC.