面向角色的多agent 工作流模型研究

目前的工作流建模工具大多是面向活动、面向产品、面向目标或面向决策的,没有强调工作流 是多个角色主体协作的过程,工作流的绩效最终依赖员工及其角色的作用. 从角色及其合作的角 度,分析了面向角色的工作流模型及其表示方法,为工作流的管理提供新的思路. 在此基础上,研究 了角色、agent 和工作流的关系,给出了一种面向角色的工作流多agent 管理系统模型和原型.     

基于角色的工作流研究

工作流管理系统是集成企业的信息、参与者和资源,实现过程自动化的CSCW系统.面对变化的经营环境,企业的业务过程呈现动态、不确定的特点.工作流管理系统能否有效处理这种动态性直接影响了其应用效果.传统工作流的定义以活动为组成要素,不易表达参与者的交互和动态行为.本文讨论了基于角色的动态工作流,给出了一种消息顺序图和ECA规则的复合表示方法.     

工作流协同系统性能评价研究

利用广义随机Petri网系统性能分析的优势,在组织间工作流模型基础上引入时间因素,并利用Petri网对局部工作流之间不同通信关系进行描述,最终构建了时间组织间工作流模型,为工作流协同系统性能评价问题提出了解决思路.     

基于工作流的B/S模式自来水公司OA系统设计与实现

本文根据现代化办公的要求,通过对OA系统中工作流的分析,提出一个基于工作流的OA系统模型,在.NET环境下,利用工作流技术和Web服务技术实现了OA系统的开发.     

基于面向对象着色Petri网的工作流的研究

工作流管理一直是企业界和学术界研究的热点,而建模是工作流管理的基础,目前许多工作流模型都存在一定的局限性.Petri网具有是分析非线性自适应系统的良好工具,拥有强大的建模分析能力和算法,与着色Petri网结合,可以找到一种面向对象的工作流过程模型建模方式.     

跨组织工作流建模及分析研究述评

从组织间工作流的层面对跨组织工作流建模的已有研究进行分类、总结和评价.然后,从定性分析和定量分析2个角度综述了工作流分析的相关研究.最后,总结了该领域研究的管理实践意义,并针对现有研究存在的不足,探讨了未来的研究趋势和发展方向.     

基于高级Petri网的工作流分析模型研究

工作流管理的目的是控制、监督、优化和支持企业流程.而企业要在竞争激烈的环境中取胜,需要经常实施企业流程再造.为有效支持企业流程再造,企业面临着选择合适的业务流程实施工作流管理的问题.本文针对这一问题,提出了基于高级Petri网的工作流分析模型及规范化的建模方法.这种建模方法能够方便地实现对业务流程的建模,描述企业中多个工作流的动态特性.     

基于消息顺序图和Petri网的供应链工作流模型设计

根据跨组织工作流的设计思想,在对供应链业务流程进行分析的基础上,提出了一个基于消息顺序图和Petri网的供应链工作流模型设计方案,从而在供应链中建立一个既保证成员的充分合作又使其发挥自主性、集成的业务流程体系,达到提高整个供应链竞争力的目的.最后,以一个实例对该模型进行了分析论证.     

工作流系统的组织机构管理模型设计

组织机构管理模块是工作流系统中的子模块。本文根据不同组织机构的复杂程度给出了相应的组织机构模型,并对不同模型进行分析,提出一个切实可行的通用模型,用于适应各种不同的企业和事业单位;本文同时给出权限管理模型,指定权限管理和分配的策略;最后把组织机构模型与工作流系统相结合,提出相关应用解决方案。     

工作流技术在流程分析中的应用研究

流程建模、仿真和优化是企业变化管理的重要内容.工作流技术是近年来发展起来的流程管理信息集成技术,它为流程重组优化提供了有力的支持.但目前工作流的仿真能力还是比较薄弱的环节.另一方面出现了许多有效的流程建模和仿真工具,但它们的功能多是孤立的,大多不能支持建模、仿真和优化等环节的集成.为此探讨了它们在企业变化管理生命周期中的结合方法.上述结合综合了工作流和面向对象建模、Petri网仿真能力等方法的优点,增强了对流程的管理功能.     

工作流管理系统的体系结构研究

目前对于WFMS体系结构的研究主要集中在具体的应用上,尚不存在一种完全通用的WFMS体系结构。虽然工作流管理联盟为此制定了标准,但它所关注的仅仅是抽象的顶层结构,并没有涉及到底层模块的详细设计。本文采用自上而下的分层设计策略,提出了一种完备的通用WFMS体系结构。我们把WFMS分解为三个主要部分:设计模块、服务器模块和客户端模块,并分别对三者进行了详细论述。除此之外,为解决分布异构环境中的系统功能扩展问题,我们还设计了扩展模块;为克服工作流客户端的不断移动所产生的消极影响,我们使WFMS与其他平台之间的接口实现了标准化,从而保证了WFMS具有很好的灵活性和可扩展性。     

What innovation managers really do: a multiple-case investigation into the informal role profiles of innovation managers

Over the last fifteen years companies tended to formalise their innovation management activities and to establish formal jobs like the innovation officer, the network manager or the innovation manager. Knowledge of the informal role profiles of these formal roles is still rare. HR and R&D Managers do not know which informal role profile might suit them best, thus having difficulties to assign the best candidates for jobs in innovation management. Researchers cannot help to resolve the problem. Our research answers the question what innovation managers really do, by analysing their tasks, skills and traits, theoretically based on informal role theories. Furthermore, we will analyse how these characteristics change with company size. To provide answers to our research questions we choose a multiple-case study approach. We found, among others, that innovation managers fulfil the role of the relationship and process promotor or a combination of both with the champion, but we also found, that the innovation manager’s roles profile becomes fuzzier with shrinking company size. Our results have practical implications for top management and also HR and R&D managers, enabling them to better select and steer employees in innovation management. Researchers will be able to build on our results because we offer a comprehensive understanding of the informal role profiles of innovation managers based on informal role theories.     

Water resources management under multi-parameter interactions: A factorial multi-stage stochastic programming approach

The paper proposes a factorial multi-stage stochastic programming (FMSP) approach to support water resources management under uncertainty. This approach was developed based on the conventional inexact multi-stage stochastic programming method. Five alternative inexact multi-stage stochastic programming algorithms in addition to the conventional algorithm were introduced and bundled to offer multiple decision options that reflect decision makers' perspectives and the complexities in system uncertainties. More importantly, factorial analysis, a multivariate inference method, was introduced into the modeling framework to analyze the potential interrelationships among a variety of uncertain parameters and their impacts on system performance. The proposed approach was applied to a water resources management case. The desired water-allocation schemes were obtained to assist in maximizing the total net benefit of the system. Multiple uncertain parameters and their interactions were examined, and those that had significant influences on system performance were identified. For example, the medium flow in the third planning period was the system objective's most influential factor. Any variation of this factor would significantly influence the acquisition of the total net benefit in the community. The significant interactions were also identified, such as the interaction between the agricultural sector's penalty and the medium flow in the third planning period. Through the analysis of multi-parameter interactions, the interrelationships among the uncertain parameters could be further revealed.     

基于Petri网的工作流优化分析

工作流管理技术是实现企业业务过程重组、过程管理与过程自动化的核心技术。在工作流参考模型中,工作流验证和优化是过程定义工具的重要组成部分。在综述相关研究论文和经典Petri网理论的基础上,提出了基于Petri网的工作流合理性验证算法和过程优化算法。最后通过保险索赔过程的优化实例,验证了工作流优化算法的有效性。     

MORM—A Petri Net Based Model for Assessing OH&S Risks in Industrial Processes: Modeling Qualitative Aspects

Because of the increase in workplace automation and the diversification of industrial processes, workplaces have become more and more complex. The classical approaches used to address workplace hazard concerns, such as checklists or sequence models, are, therefore, of limited use in such complex systems. Moreover, because of the multifaceted nature of workplaces, the use of single-oriented methods, such as AEA (man oriented), FMEA (system oriented), or HAZOP (process oriented), is not satisfactory. The use of a dynamic modeling approach in order to allow multiple-oriented analyses may constitute an alternative to overcome this limitation. The qualitative modeling aspects of the MORM (man-machine occupational risk modeling) model are discussed in this article. The model, realized on an object-oriented Petri net tool (CO-OPN), has been developed to simulate and analyze industrial processes in an OH&S perspective. The industrial process is modeled as a set of interconnected subnets (state spaces), which describe its constitutive machines. Process-related factors are introduced, in an explicit way, through machine interconnections and flow properties. While man-machine interactions are modeled as triggering events for the state spaces of the machines, the CREAM cognitive behavior model is used in order to establish the relevant triggering events. In the CO-OPN formalism, the model is expressed as a set of interconnected CO-OPN objects defined over data types expressing the measure attached to the flow of entities transiting through the machines. Constraints on the measures assigned to these entities are used to determine the state changes in each machine. Interconnecting machines implies the composition of such flow and consequently the interconnection of the measure constraints. This is reflected by the construction of constraint enrichment hierarchies, which can be used for simulation and analysis optimization in a clear mathematical framework. The use of Petri nets to perform multiple-oriented analysis opens perspectives in the field of industrial risk management. It may significantly reduce the duration of the assessment process. But, most of all, it opens perspectives in the field of risk comparisons and integrated risk management. Moreover, because of the generic nature of the model and tool used, the same concepts and patterns may be used to model a wide range of systems and application fields.     

基于ECA规则的工作流时间约束分析

本文着重研究了工作流中各活动间的定量时序关系,提出了一种分析工作流中时间约束的方法。该方法针对基于ECA规则的工作流,通过建立及分析工作流的约束图,对工作流中活动间定量时序约束的一致性进行了分析,从而保证了工作流的正常运行。     

基于工作流的企业业务过程集成建模方法

工作流管理是一种对业务过程进行支持、控制、监视和优化的先进工具. 将生产制造过程 BOM和Petri 网技术应用于企业业务过程,对于相关定义、建模分析以及从BOM到Petri 网的映 射实现算法进行了说明;对基于BOM- Petri 的建模方法进行了扩展优化;最后结合算法进行了 仿真研究.     

Bursts and heavy tails of execution time in business processes

This paper investigates the phenomena and effects of heavy tails of execution time in business processes. We approached the heavy tails as a particular variation of business process execution, and analysed them from empirical data of its execution time. The features and possible causes of the heavy tails were investigated. A workflow simulation was conducted to simulate the heavy tails, in order to evaluate quantitatively their effects to business process performance. The simulation outcomes demonstrate that (1) even a heavy-tailed activity in a business process can cause large variation of end-to-end execution times of the process and (2) there are significant prediction gaps resulted by different assumptions of execution times between an exponential distribution and a heavy-tailed distribution.