基于Thrift-Eureka改进的微服务技术研究

首先介绍了航天型号软件开发框架遇到的问题,分析了航天型号垂直应用框架和微服务框架的优缺点,着重介绍了目前互联网领域流行的微服务框架Thrift-Eureka[1-2]和Dubbo;接着描述了互联网领域的微服务框架适配航天型号软件领域遇到的问题;然后基于微服务框架思想和Dubbo微服务框架,提出了一种适用于航天型号软件领域的微服务框架;该服务框架有两种使用模式,一种适用于包含数据库的型号软件系统;另一种适用于不包含数据库的型号软件系统;针对有数据库的型号软件系统,利用数据库系统来实现微服务框架的注册中心功能;针对没有数据库的型号软件系统,利用广播协议、本地日志来实现微服务框架注册中心功能.     

Experiences of using an evaluation framework

This paper reports two trials of an evaluation framework intended to evaluate novel software applications. The evaluation framework was originally developed to evaluate a risk-based software bidding model, and our first trial of using the framework was our evaluation of the bidding model. We found that the framework worked well as a validation framework but needed to be extended before it would be appropriate for evaluation. Subsequently, we compared our framework with a recently completed evaluation of a software tool undertaken as part of the Framework V CLARiFi project. In this case, we did not use the framework to guide the evaluation; we used the framework to see whether it would identify any weaknesses in the actual evaluation process. Activities recommended by the framework were not undertaken in the order suggested by the evaluation process and we found problems relating to that oversight surfaced during the tool evaluation activities. Our experiences suggest that the framework has some benefits but it also requires further practical testing.     

A software framework for non-repudiation service in electronic commerce based on the Internet

We propose a software framework for a non-repudiation security service in e-commerce (electronic commerce) on the Internet. The proposed software framework is a security framework for the non-repudiation security service. In the framework, we propose a systematic design methodology that provides a security class concept. Our framework can be differentiated from others. First, unlike other frameworks, it is interested in a successful completion of e-commerce transactions by supporting a non-repudiation security service. Second, the proposed framework is based on a dynamic mapping mechanism that improves the performance of e-commerce transactions. We made a set of experiments to measure the performance of three software frameworks—SSL, SET, and our NA framework. The experimental results show that our framework improves the performance of e-commerce transactions while providing a high quality of security services for desired e-commerce transactions.     

一种多框架软件集成策略模型

针对多框架组合过程中遇到的控制流整合问题。框架间隙问题。框架重叠问题，框架组合方向问题作了深入的探讨，并提出了针对不同问题的解决方案，最后将这些解决方案合并后。得到了多框架集成策略模型．     

基于版本信息的面向对象框架实例化模式挖掘*

基于框架的面向对象开发技术是实现大规模软件复用的一种有效的途径.由于框架本身层次的复杂性,往往导致框架实例化过程的复杂和烦琐,通常采用记录框架变化点的实例化过程和约束条件的方法来解决这个问题.但是,对于那些缺乏详细记录的"遗留"面向对象框架,框架变化点实例化记录往往隐含在具体的实现细节中,从而使得"遗留"面向对象框架的复用变得十分困难.提出了一种基于版本信息获取面向对象框架的实例化模式的方法,从而辅助框架的实例化工作.     

基于Java的数据库应用框架研究及开发

大量的计算机软件的开发离不开数据库的使用,利用数据库框架实现数据库的应用具有多方面的优势。该文设计和实现了一个微型数据库应用框架,并将该框架应用于实际的软件开发过程中,从而验证了该框架的可用性。该框架适用于小型软件系统的开发,提高了系统的可扩展性。     

基于业务构件的快速可重构信息系统的框架研究

1 引言系统可重构的思想蕴含着“适者生存”的“应变”的哲理。快速可重构性已成为智能系统的基本特性,是衡量系统响应变化能力的重要指标,是企业赢得全球化市场竞争的关键因素。快速体现为尽量缩短新产品的上市时间,而系统重构体现为变化来临时系统中的子系统会重新组合而产生新功能、新过程或更高层的整体性。快速可重构信息系统(Rapid     

Feature Extraction Using a Complete Kernel Extension of Supervised Graph Embedding

In this article, the kernel-based methods explained by a graph embedding framework are analyzed and their nature is revealed, i.e. any kernel-based method in a graph embedding framework is equivalent to kernel principal component analysis plus its corresponding linear one. Based on this result, the authors propose a complete kernel-based algorithms framework. Any algorithm in our framework makes full use of two kinds of discriminant information, irregular and regular. The proposed algorithms framework is tested and evaluated using the ORL, Yale and FERET face databases. The experiment results demonstrate the effectiveness of our proposed algorithms framework.     

一个基于PKI和数字水印的数字版权保护框架模型

针对目前数字版权保护的研究较偏重于安全性的情况,本文给出了一种均衡考虑数字作品使用的合法性、数字作品的完整性、数字作品传输的安全性和数字作品交易公平性的 数字版权保护框架模型,对模型进行了形式化描述,并分析了数字作品版权保护过程中涉及到的主体问的关系。文章还分析了该模型的安全性和性能,阐明了其实用价值。     

框架技术在证券交易系统设计中的应用

文章在对框架技术进行研究的基础上,论述了设计框架所要解决的问题,并提出了相应的解决方法,最后设计并实现了一个证券交易系统客户子系统的框架。     

Decision-tree instance-space decomposition with grouped gain-ratio

This paper examines a decision-tree framework for instance-space decomposition. According to the framework, the original instance-space is hierarchically partitioned into multiple subspaces and a distinct classifier is assigned to each subspace. Subsequently, an unlabeled, previously-unseen instance is classified by employing the classifier that was assigned to the subspace to which the instance belongs. After describing the framework, the paper suggests a novel splitting-rule for the framework and presents an experimental study, which was conducted, to compare various implementations of the framework. The study indicates that using the novel splitting-rule, previously presented implementations of the framework, can be improved in terms of accuracy and computation time.     

基于Hibernate和Spring框架的Web应用研究

Hibernate是当前广泛应用的一种ORM数据库访问框架,它提供从对象模型到关系型数据模型的映射。Spring框架是一种轻量级J2EE应用框架,是针对Bean的生命周期进行管理的轻量级容器。介绍这两种框架并将它们结合起来形成一个业务持久层解决方案。这里提出使用Spring框架来管理业务对象,通过Hibernate作为数据持久层的方案来开发B/S架构的Web应用,并将此框架结构应用于实际项目的设计与开发中。     

A Scalable Testing Framework for Location-Based Services

A novel testing framework for location based services is introduced. In particular, the paper showcases a novel architecture for such a framework. The implementation of the framework illustrates both the functionality and the feasibility of the framework proposed and the utility of the architecture. The new framework is evaluated through comparison to several other methodologies currently available for the testing of location-based applications. A case study is presented in which the testing framework was applied to a typical mobile service tracking system. It is concluded that the proposed testing framework achieves the best coverage of the entire location based service testing problem of the currently available methodologies; being equipped to test the widest array of application attributes and allowing for the automation of testing activities.     

轻量级J2EE框架电子商务应用研究

基于J2EE框架的电子商务近年来在国内外得到了广泛应用.本文对当前J2EE框架存在的局限和问题进行了简要分析,采用了一种轻量J2EE框架Struts(整合Ajax) Spring Hibernate开发高效、可靠、实用的电子商务应用.该系统采用三层Web体系结构模式,其中表现层采用Struts技术,核心业务逻辑采用Spring框架,而数据持久层采用时下流行的Hibernate O/R Mapping技术.     

J2EE Web开发框架体系结构

开源框架（如MVC框架Struts、OR Mapping框架Hibernate、Log框架Log4j等）的出现极大地提高了J2EE应用程序开发的效率,但它们都只提供了应用程序某一层次的框架,不是一个完整的应用框架。应用框架是整个系统的可重用设计,是构建应用程序的模板,它本质上是一系列设计模式的抽象实现,并提供一些框架基础服务。在整合各种框架的基础上,我们在一个更高的层面上设计和实现了一个J2EEWeb开发框架。该开发框架具有良好的软件体系结构,采用了多种架构设计模式（如多层结构、MVC模式、IoC模式等）,保证了程序具有松耦合性和易扩展性,并提供了一些常用的可复用构件,实现了web应用系统的基础功能。它可以帮助开发人员获得最大程度的框架复用,快速开发应用系统。     

基于反向控制模式的通用JDBC框架

面向对象框架技术是软件复用的一种高级机制,开发者利用框架所提供的一组集成的、针对特定领域的结构和功能,通过使用或扩展该框架,就能够快速地构建应用。一个设计良好的框架通常运用一种或多种设计模式,该文着重分析了反向控制模式在框架中的应用,同时结合以J2EE架构开发的几个项目经验,介绍了一个简单、易用的JDBC框架实现。     

Domain-Specific Modeling Languages to improve framework instantiation

Frameworks are reusable software composed of concrete and abstract classes that implement the functionality of a domain. Applications reuse frameworks to enhance quality and development efficiency. However, frameworks are hard to learn and reuse. Application developers must understand the complex class hierarchy of the framework to instantiate it properly. In this paper, we present an approach to build a Domain-Specific Modeling Language (DSML) of a framework and use it to facilitate framework reuse during application development. The DSML of a framework is built by identifying the features of this framework and the information required to instantiate them. Application generators transform models created with the DSML into application code, hiding framework complexities. In this paper, we illustrate the use of our approach in a framework for the domain of business resource transactions and a experiment that evaluated the efficiency obtained with our approach.     

UC安全性证明中模拟器构造方法研究

在UC模型(通用可组合安全分析模型)中密码协议安全性证明的难点是模拟器的构造,而目前模拟器的构造没有通用有效的方法可循,针对这一问题,提出了一种构造模拟器的通用有效的方法.研究了UC模型的构建原理,分析了UC安全性的本质要求,指出了符合UC安全性本质要求的模拟器存在条件以及模拟内容,在此基础上,阐述了构造模拟器的方法,并给出了该方法的正确性分析.为正确使用UC模型进行密码协议的UC安全性证明提供了切实可行的方法.     

BFPC龙门框架组件拓扑优化及性能分析

为探索提高机床基础件静、动态性能和轻质性的新方法,首先,以某加工中心框架组件为原型,初步设计玄武岩纤维树脂混凝土(Blasalt Fiber Reinforced Concrete,BFPC)龙门框架组件,分析典型工况下该框架组件的受力情况,并对原型龙门框架组件的静态、模态和谐响应进行仿真分析和计算。然后,对BFPC龙门框架组件进行拓扑优化设计,根据拓扑优化设计结果和BFPC龙门框架组件的制造工艺性,重构BFPC龙门框架组件结构。最后,对优化后的BFPC龙门框架组件的静、动态性能和轻质性进行仿真分析和计算,再与原型的相应性能进行对比分析。结果表明,拓扑优化设计后的BFPC龙门框架组件在静、动态性能和轻质性方面都明显优于原型龙门框架组件。     

扩展Struts框架的设计模式

Struts框架是一个基于J2EE平台的MVC框架，主要采用Servlet和JSP技术来实现。为了充分利用Struts的优点，更加方便地设计与开发应用程序，文中在介绍了Struts框架的体系结构和工作原理的基础上，针对目前Struts框架中存在的局限性，对该框架进行了扩展，使该框架能应用于应用系统的各个层次。最后将该框架应用到一个实例中，实践证明该框架具有很强的实用性。