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1.
本文介绍了信息系统集成和Web Services技术,通过松散的应用集成,使用Web Services技术,将EAI技术和Web Services技术相结合来实现开放式企业应用集成,设计了一个基于Web Services的企业应用集成框架——Web Services EAI框架。和传统的EAI框架相比,Web Services EAI框架具有易开发、标准开放、开发灵活、动态集成、开发便宜等特点,具有良好的可伸缩性、可扩展性和易维护性,显示了基于Web Services的信息系统集成的优越性。  相似文献   

2.
刘阳 《教育技术导刊》2009,8(4):124-125
如今Web Services技术的应用越来越广泛,主要介绍了Web Services技术的基本概念和关键技术,然后探讨了应用.NET Compact Framework调用Web Services开发的方法。  相似文献   

3.
Web Services ces是一种新颖的系统应用开发与集成技术,得到了越来越多用户以及开发人员的青睐。对XML、Web Services技术进行了探讨;阐述了基于XML的Web Services的相关概念、框架;给出了一个Web Services应用系统原型的设计和实现。  相似文献   

4.
介绍了Web Services技术及其体系结构。给出了遗留系统Web Services封装与实现方法以及基于Web Services架构实现企业信息共享的实例。实践表明,基于Web Services的企业应用集成方案,增强了系统间集成的方便度,降低了更新维护的成本和难度。  相似文献   

5.
文章简述了Web Services的相关技术,构建出一个基于Web Services技术进行异构环境服务集成的框架结构。服务器端分别用.NET和J2EE两种不同架构实现了业务逻辑,并把它们发布成两个Web Services,在客户端分别应用ASPJ、ava和VB三种不同环境,采用了C/S和B/S两种工作模式,实现了对上述两个Web Services的异构环境下的访问。以此证明基于Web Services技术实现异构环境服务集成的可行性。  相似文献   

6.
随着互联网的不断发展,企业对跨平台的系统需求越来越迫切,而新的网络应用技术构架Web Services技术的出现,为企业应用集成的发展提供了崭新的模式.通过介绍Web Services的主要技术及其应用构架,并结合具体的实例阐述了Web Services构架技术在企业上的应用及前景.  相似文献   

7.
以标准协议为基础和松散耦合为特征的Web Services是分布式计算技术的重要发展方向.本文主要介绍有关Web Services的概念及其核心技术,阐述面向服务的体系结构,并分析Web Services 优势及其应用场合,指出了当前发展状况和需要解决的问题.  相似文献   

8.
Web Services能够与任何平台上用任何语言编写的服务进行交互,使得应用程序的集成可以做到更快、更容易,而且具有更高的可扩展性.将移动通信与Web Services技术相结合,将Web Services应用到移动彩票服务系统中,采用JAVA和.NET两种技术实现了基于Web Services的移动彩票交易平台,测试结果显示该彩票系统是有效的、可行的.  相似文献   

9.
介绍Web Services和COM 技术的特性及在OA系统中的应用,提出了基于Web Services和COM 技术的三层分布式OA系统的体系结构.通过应用系统在逻辑上多层分离与物理上的分布实施,真正实现了跨平台、跨语言的软件代码重用,最后给出了系统实现实例,说明了用Web Services和COM 技术实现资源整合和系统集成的方法.  相似文献   

10.
介绍了WAP与Web Services的概念,给出了一种基于Web Services和WAP技术的LBS系统应用框架,重点叙述了该应用框架的组成和工作原理,并详细地介绍了该应用的设计和实现。  相似文献   

11.
Privacy is a critical requirement in distributed data mining. Cryptography-based secure multiparty computation is a main approach for privacy preserving. However, it shows poor performance in large scale distributed systems. Meanwhile, data perturbation techniques are comparatively efficient but are mainly used in centralized privacy-preserving data mining (PPDM). In this paper, we propose a light-weight anonymous data perturbation method for efficient privacy preserving in distributed data mining. We first define the privacy constraints for data perturbation based PPDM in a semi-honest distributed environment. Two protocols are proposed to address these constraints and protect data statistics and the randomization process against collusion attacks: the adaptive privacy-preserving summary protocol and the anonymous exchange protocol. Finally, a distributed data perturbation framework based on these protocols is proposed to realize distributed PPDM. Experiment results show that our approach achieves a high security level and is very efficient in a large scale distributed environment.  相似文献   

12.
本文就如何平衡分布式应用和单机应用的处理性能以及从一种分布式技术迁移到另一种分布式技术给出一种分离具体分布式技术的设计方法。强调了对于应用软件来讲,CORBA,ICE,SOCKET等具体分布式技术不是核心,核心是我们的客户需要的业务功能。  相似文献   

13.
利用06微米CMOS技术设计了一种新型的CMOS分布放大器。介绍了分布放大器的原理。利用HP—ADS软件仿真和设计了一个四级CMOS分布放大器。设计中使用了一系列片上螺旋电感。测量了分布放大器的S参数。对实验结果进行了分析和讨论。  相似文献   

14.
15.
简要地介绍了分布式数据库系统的概念和特点,并在分析比较分布式数据库系统和集中式数据库系统查询优化目标不同特点的基础上,归纳出分布式数据库系统的查询优化目标和代价分析,进而提出查询优化的策略,并在举例中重点讨论了操作执行顺序的不同对查询性能的影响。  相似文献   

16.
一维资源分配问题状态变量的选取   总被引:1,自引:0,他引:1  
一维资源分配问题是动态规划应用的一个典型例子,在建立动态规划模型时,状态变量是一个重要的因素.通常是用在给第七种产品分配之前的待分配量作为状态变量,建立逆序的动态规划模型.考虑到在整个分配过程中,已分配过的量和待分配量之和是资源总数,它们的变化都能反映整个分配过程,而且已分配过的量也是一个随变化过程累计的量,本文提出用在给第七种产品分配之前的已分配过的量作为状态变量,建立相应的顺序动态规划模型,并通过实例验证了该方法是有效的.  相似文献   

17.
We argue that greater precision is needed in the use of the term distributed cognition if this perspective is to significantly impact educational research. We describe a continuum of interpretations of distributed cognition ranging from a conceptualization of cognition as an individual phenomenon that is influenced by factors external to the individual, to a conceptualization of cognition as a social phenomenon that cannot be reduced to individual psychological constructs. We discuss the issues raised by the papers in the current volume, and locate the perspectives taken in these papers along the distributed cognition continuum. The relationship between distributed cognition and situated cognition is then examined, as these terms are often used interchangeably. Finally, we discuss key issues for further research in distributed cognition.  相似文献   

18.
Teacher job satisfaction is a heated topic worldwide. Among the possible factors influencing teacher job satisfaction, distributed leadership is very important one. Given very few studies have investigated the effects of distributed leadership on teacher job satisfaction through teacher autonomy and teacher collaboration, this paper is important. It is expected to provide international readers with a better understanding of how these variables are practised in the Chinese context. Specifically, we aim to achieve two goals. The first goal is to investigate the direct impact of distributed leadership on teacher job satisfaction and the second one is to explore how distributed leadership indirectly affects teacher job satisfaction through teacher autonomy and teacher collaboration. The data are from the 2018 Teaching and Learning International Survey (TALIS) (n = 3976). Structural equation modeling revealed statistically significant positive effects of distributed leadership on teacher autonomy, teacher collaboration, and teacher job satisfaction, respectively. The further analyses indicated that the indirect effects of distributed leadership on teacher job satisfaction through teacher autonomy and professional collaboration were statistically significant. However, distributed leadership had no indirect effect on job satisfaction via exchange and co-ordination. Based on the findings, we propose some suggestions to improve teacher job satisfaction, such as strengthening communications between school leaders and teachers, and providing adequate autonomy to teachers. The detailed relationships among these variables are discussed in connection with Chinese educational context.  相似文献   

19.
分别针对无线通信集中式多入多出(MIMO)和分布式MIMO系统,对频偏估计和频偏补偿这两个方面的基本原理和研究现状进行了详细分析,总结出已有研究的不足之处在于对分布式MIMO中的频偏估计以及分布式MIMO-OFDM(正交频分复用)中的频偏补偿的研究尚不完善,指出未来可能的研究方向应主要集中在分布式MIMO中基于一般系统模型的频偏估计方法和分布式MIMO-OFDM中具有实用价值的低复杂度频偏补偿方法两个方面.  相似文献   

20.
随着分布式对象技术的逐渐成熟,多层分布式应用体系结构得到了越来越多的应用.讨论了多层分布式系统结构模型和CORBA的系统架构,提出了利用Delph i开发基于CORBA多层分布式应用的方法.  相似文献   

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