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基于电子合同的虚拟企业中跨组织工作流系统研究
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摘要
随着科学技术飞速发展,消费需求日新月异,企业只有敏锐掌握市场脉搏,建立高度灵活、富有弹性的动态组织形式,适应变革时代的要求,才能在激烈的市场竞争中立于不败之地。因此,越来越多的公司倾向于将非核心的业务外包出去,强化核心能力,提高市场竞争力。外包业务所涉及的企业就组成了一个动态的虚拟企业。工作流管理系统的主要目标是通过合理的调用和分配有关的信息及资源来协调虚拟企业业务过程中的各个活动,以促使业务目标的高效实现。
     利用工作流技术,可以在不同企业之间实现服务外包业务自动化,提高生产效率,优化业务流程,这也是现在许多虚拟企业的目标。然而,在工作流管理系统开发的最初阶段,由于缺乏统一的、普遍遵循的标准以及限于当时软件支撑技术的水平,导致不同公司的工作流管理系统在功能上、所采用的支撑技术上、开发技术上和接口上都呈现出非常大的不同,几乎彼此都不能兼容。由于不同的企业选取不同厂家的工作流产品,而且不同企业对同样的外包业务描述也存在各种各样的差别。如何为企业找到最合适或最优的合作伙伴,实现外包活动自动化,以及使虚拟企业中异构的工作流系统有效的连接、协同工作,完成外包活动成为了亟待解决的问题。
     目前对于虚拟企业构建与管理、虚拟企业工作流的建模方法、异构工作流的无缝连接,国内外都有相关的研究。但都未能把虚拟企业的外包活动与工作流技术明确的结合起来。虽然现在有研究组织提出了电子合同的概念,但未对其内容、结构等做深入分析。基于国内外在这方面的研究内容,本文阐述了服务外包活动的过程。提出了一个与传统电子合同内容不同的、基于XML语言的电子合同模型,来描述外包活动。并分析了电子合同的目的、内容,给出了电子合同模型的结构图,进而定义了电子合同的文档类型定义(DTD)。然后提出了一个基于CORBA交易服务的外包服务匹配引擎,提供虚拟企业各方一个广告及搜索外包服务的平台,使得双方能够找到与自己需求相匹配的外包业务。并且能保证由最优或最合适的合作伙伴,来建立虚拟企业。最后,通过对CORBA技术、RMI技术及相关工作流产品的研究,结合服务外包电子合同模型与服务匹配引擎,给出了一个虚拟企业跨组织工作流系统外包架构。将外包活动及异构的、跨组织的工作流系统有机地、无缝地连接起来,实现虚拟企业工作流系统中外包业务执行、服务自动化。
     虚拟企业具有巨大的生命力和广阔的应用前景,必将成为21世纪企业形态的主流。“外包”也成为世界性的风潮,形成众多的“外包”市场,为专业公司提供了巨大的商业机会。我国企业应该仔细审视这些新市场的内容与发展趋势,把握这次全球性的企业战略调整所带来的重大机遇。本文提出了一种新的虚拟企业外包架构,该架构基于电子合同,将外包活动与虚拟企业工作流结合起来,为虚拟企业工作流系统中的外包活动提供了一种研究与实现的方法。
As the development of science and technology, the changing of consumption demand, the enterprise only grasps the market pulse sharply and set up highly flexible, elastic dynamic organizational form to meet the request of transform time. So, they could be in the invincible position in fierce market competition. Now, more and more companies incline to outsource the non-central business and strengthen key ability in order to improve competitiveness to the market. The enterprises or organizations which involved by outsourcing business forms a dynamic virtual enterprise . The main goal of WfMS is to coordinate each activity in the virtual enterprise business course and impel the realizing high-efficiently of business objective. The approach is rational transferring and assigning relevant information and resource.
    By using workflow technology, we can realize outsourcing automatization between different enterprises. And it also can improve production efficiency and optimize the business flow. Now it is the goals of a lot of virtual enterprises. However, at the initial stages, because the development of WfMS lack unified general standard and limited to the level of software at that time, the workflow products of different company have heavy difference such as the function, the support technology adopted, developing technology and the interface .So they can't be compatible each other nearly. Because different enterprises choose different workflow products and different enterprises describe the same outsourcing business in various ways. How to find most suitable or optimum cooperative partner for enterprise and make heterogenous workflow system of the virtual enterprises effective joining, coordination together to finish outsourcing business becomes a major issue.
    Now, there is relevant domestic and international research including construct and management, modeling method of the virtual enterprises and the joining of heterogenous workflow system But they don't combine outsourcing business of virtual enterprises with workflow technology. Though some people have presented the concept of the electronic contract, but they have not made in-depth analysis to its content .On the basis of domestic and international research contents in this respect, this article has explained the course of outsourcing activities. It presents an electronic contract model which based on XML language and different from content of traditional electronic contract. And the model is used to describe outsourcing activities. This article has analyzed the purpose, content of electronic contract. It also has given electronic contract model structure chart and then defined electronic contract DTD. This article put forward a service -match engine on the basis of CORBA trading service. The engine offer each side the a platform to advertise and search for outsourcing services .And it make both sides find optimum or most suitable, cooperative partner to set up virtual enterprise. Lastly, after studying CORBA, RMI technology and workflow product, combining electronic contract models, this article has given the architecture of virtual enterprises work flow system .It also combined the outsourcing with WfMS together .It realizes virtual enterprises workflow system outsourcing carrying out, serving automation.
    Virtual enterprises have enormous vitality and widely application prospect. It will become the
    
    
    
    mainstream of enterprise's form in the 21st century. Outsourcing becomes cosmopolitan tendency and forms the numerous markets of outsourcing. It offers enormous commercial opportunity for specialized company. Enterprises of our country should examine the content and development tendency of these new markets carefully. They should hold the great opportunity brought by this global enterprise strategically adjustment. The outsourcing architecture of virtual enterprise which this article puts forward to is based on electronic contract . It has combined the outsourcing with WfMS together and provided a kind of solution which realized outsourcing in the virtual
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