Research on the Development of SCM System for the Textile and Garment Industry Based on UML

This thesis systematically analyzes the essential structure of supply chain management system for the textile and garment industry based on UML. According to these analyses, an advanced, reasonable and practical preliminary system has been constructed to simulate the operation process and evaluate design standard of the supply chain.     

Service-based flexible workflow system for virtual enterprise

Using the services provided by virtual enterprises, we presented a solution to implement flexible inter-enterprise workflow management. Services were the responses of events that can be accessed programmatically on the Internet by HTTP protocol. Services were obtained according to some standardized service templates. The workflow engine’s flexible control to a request was bound to appropriate services and their providers by using a constraint-based, dynamic binding mechanism. Hence, a flexible and collaborative business was achieved. The workflow management system supports virtual enterprise, and the styles of virtual enterprises can be adjusted readily to adapt various situations.     

Design and Implementation of Visualized Workflow Modeling System Based on B/S Structure

According to the necessity of flexible workflow management system, the solution to set up the visualized workflow modelling system based on B/S structure is put forward, which conforms to the relevant specifications of WfMC and the workflow process definition meta-model. The design for system structure is presented in detail, and the key technologies for system implementation are also introduced. Additionally, an example is illustrated to demonstrate the validity of system.     

Implementation of WPDL Conforming Workflow Model

Workflow process definition language (WPDL) facilitates the transfer of workflow process definitions between separate workflow products. However, much work is still needed to transfer the specific workflow model to a WPDL conforming model. CIMFlow is a workflow management system developed by the National CIMS Engineering Research Center. This paper discusses the methods by which the CIMFlow model conforms to the WPDL meta-model and the differences between the WPDL meta-model and the CIMFlow model. Some improvements are proposed for the WPDL specification. Finally, the mapping and translating methods between the entities and attributes are given for the two models. The proposed methods and improvements are valuable as a reference for other mapping applications and the WPDL specification.     

Using mobile agents to implement workflow system

Current workflow management systems usually adopt the existing technologies such as TCP, IP-based Web technologies and CORBA as well to fulfill the bottom communications. Very often it has been considered only from a theoretical point of view, mainly for the lack of concrete possibilities to execute with elasticity. MAT (Mobile Agent Technology) represents a very attractive approach to the distributed control of computer networks and a valid alternative to the implementation of strategies for workflow system. This papermainly focuses on improving the performance of workflow system by using MAT. Firstly. the performances of workflow systems based on both C()RBA and mobile agent are summarized and analyzed; Secondly. the performance contrast is presented by introducing the mathematic model of each kind of data interaction process respectively. Last. a mobile agentbased workflow system named MAWMS is presented and described in detail.     

Cost of Multicast Logical Key Tree Based on Hierarchical Data Processing

How to design a multicast key management system with high performance is a hot issue now. This paper will apply the idea of hierarchical data processing to construct a common analytic model based on directed logical key tree and supply two important metrics to this problem： re-keying cost and key storage cost. The paper gives the basic theory to the hierarchical data processing and the analyzing model to multieast key management based on logical key tree. It has been proved that the 4-ray tree has the best performance in using these metrics. The key management problem is also investigated based on user probability model, and gives two evaluating parameters to re-keying and key storage cost.     

Concurrent processes scheduling with scarce resources in small and medium enterprises

Scarce resources , precedence and non-determined time-lag are three constraints commonly found in small and medium manufacturing enterprises (SMEs), which are deemed to block the ap-plication of workflow management system ( WfMS ) .To tackle this problem , a workflow scheduling approach is proposed based on timing workflow net (TWF-net) and genetic algorithm (GA).The workflow is modelled in a form of TWF-net in favour of process simulation and resource conflict checking .After simplifying and reconstructing the set of workflow instance , the conflict resolution problem is transformed into a resource-constrained project scheduling problem ( RCPSP ) , which could be efficiently solved by a heuristic method , such as GA.Finally, problems of various sizes are utilized to test the performance of the proposed algorithm and to compare it with first-come-first-served ( FCFS) strategy.The evaluation demonstrates that the proposed method is an overwhelming and effective approach for scheduling the concurrent processes with precedence and resource con -straints .     

Optimal Dispatching of Large—scale Water Supply System

This paper deals with the use of optimal control techniques in large-scale water distribution networks. According to the network characteristics and actual state of the water supply system in China, the implicit model, which may be solved by utilizing the hierarchical optimization method,is established. In special, based on the analyses of the water supply system containing variable-speed pumps, a software tool has been developed successfully. The application of this model to the city of Shenyang (China) is compared to experiential strategy. The results of this study show that the developed model is a very promising optimization method to control the large-scale water sup-ply systems.     

Supply Chain Coordination of Loss-Averse Newsvendor with Contract

This paper studies a supply chain model in which a single supplier sells a single product to a single retailer who faces the newsvendor problem. The retailer is loss averse. The results show that the optimal production quantity with decentralized decision making with a wholesale price contract is less than that with centralized decision making. The supply chain can achieve channel coordination with buy back and target rebate contracts. With buy back contracts, the supply chain system profits can be allocated arbitrarily between the supplier and retailer. A new kind of contract, the incremental buy back contract, gives similar results as with the buy back contract. The advantages and drawbacks of these three types of contracts are analyzed with numerical examples.     

一种基于Agent支持电子供应链和B2B电子商务的工作流模型

在WfMC基础上，给出一个跨企业间的工作流模型．在模型中引入Agent技术．并考虑到现代企业运用电子商务技术和采用电子供应链管理的新特点，提出一种基于Agent支持电子供应链和B2B电子商务的工作流模型．     

敏捷供应链系统的工作流实现方案

敏捷供应链系统是企业间组成动态联盟的有效手段,而Ｉｎｔｅｒｎｅｔ已成为企业信息沟通的重要手段,工作流管理系统则能对企业的业务流程进行最有效的管理,能很好地组织和处理企业业务。设计了一种基于Ｉｎｔｅｒｎｅｔ和工作流管理系统实现的以主生产企业为核心的敏捷供应链系统,给出了该系统的参考模型和软件框架,讨论了分布系统的相关关键技术及其在敏捷供应链系统中的应用。     

基于Petri网的工作流建模技术及应用

工作流管理技术是 90年代初新兴起的软件技术。其实现的关键在于工作流概念模型的建立。虽然信息系统领域的建模理论已经发展得较为成熟 ,但在工作流管理领域还没有一个专门的建模工具来满足工作流建模的需求。通过对几种概念建模方法的比较分析 ,论文选择 Petri网作为工作流建模的主要工具 ,并探讨和总结了工作流程的路由结构、触发机制、可靠性工作流模型的分析方法 ,转换原则和组合性质 ,最后通过一个案例进一步阐述了基于 Petri网的工作流建模技术。实际应用表明该建模方法简单、可行 ,能够保证工作流模型的有效性 ,而且便于工作流网络的计算机形式化表示 ,有利于工作流管理系统 (WFMS)的实现。     

基于知识的工作流管理系统模型研究

针对传统的工作流管理系统在模型的描述及业务流程的自学习、自动建模方面缺乏实现主动化、智能化机制的问题,将专家系统中的理论、技术与工作流技术相结合,论述了二者在模型表示上的一致性,按照智能化系统的表示及控制方法对系统的模型进行了重新定义,提出了基于知识的工作流管理系统的总体模型,并进一步探讨了模型中各功能模块的组成和作用,系统的执行及控制方法.实践证明,采用该模型表示方法能有效增加系统柔韧性,解决流程过程僵硬、对环境变化缺乏适应性的问题.     

基于工作流的电子商务交易订购系统建模

随着Internet的高速发展和普及,电子商务已成为当前社会和经济发展中的一种重要交易方式。工作流技术的出现和迅速发展为电子商务系统业务流程的建模和实施提供了重要的技术支持。基于工作流技术为电子商务交易订购系统建立形式化模型。首先通过进程代数CSP的语法进行了定义,并采用CSP对常见的工作流模式进行描述。其次,应用工作流的CSP描述对电子商务交易订购流程进行建模。该模型符合原子性要求,能够对电子商务交易订购过程中的系统响应、并发控制等一系列关键问题进行描述,有助于解决当前电子商务系统存在的诸多问题。     

基于关系数据模型的工作流引擎设计与实现

为了提高办公效率,迅速构建基于流程的应用,提出了符合工作流参考模型的工作流引擎框架结构.以关系数据库为依托,进行工作流的过程建模和模型表达,研究并实现了工作流引擎的关键技术.结合在土地利用规划业务过程中的应用,开发出了工作流引擎服务器以及具有动态配置功能的工作流客户端应用框架.实践表明,该工作流引擎明显缩短了应用系统的开发周期,降低了系统维护的复杂性.     

Integrated Enterprise Modeling Method Based on Workflow Model and Multiviews

IntroductionThe implementation of a CIM system is a verycomplex process that needs the guidance andsupport of enterprise modeling methodology.Thedevelopment of CIM system theory andmethodology has produced many results in thefield of system modeling,analysis and design,such as CIM Open System Architecture ( CIM-OSA) [1] ,GRAI Integrated Methodology ( GRAI-GIM) [2 ] ,Purdue Enterprise Reference Architecture( PERA) [3 ] ,Architecture of Integrated InformationSystem ( ARIS ) [4 …     

广义随机Petri网在工作流建模中的应用研究

工作流管理技术是20世纪90年代初兴起的软件技术,其实现的关键在于工作流概念模型的建立。Petri网(GSPN)作为一种图形化的数学建模工具,适合于工作流领域的建模需求。提出了基于广义随机Petri网的工作流建模方法,运用可达图法对工作流正确性和可靠性进行检查。利用GSPN与马尔可夫链的同构关系,采用GSPN和马尔可夫链相结合的工作流性能分析方法,为工作流性能的有效评估提供理论依据。实例验证该方法是有效性的,有利于工作流管理系统的实现。     

基于B/S的工艺工作流管理的研究

根据工作流管理联盟(WFMC)的工作流参考模型，结合Web技术，提出了基于B／S工艺工作流管理，阐述了基于B／S的工作流管理原理和工艺工作流管理，并在CAPP系统中实现了工作流管理功能。     

基于．NET技术的电力企业标准化作业系统研究

目的实现电力企业网上办公，促进信息快速准确的传递。方法基于工作流原理和．NET技术，分析了电力企业标准化办公流程。结果提出了电力企业标准化流程模型。结论实现了电力企业标准化作业系统。