飞机技术服务的流程建模和分析

针对传统航空企业质量管理的不足,结合航空企业技术服务现状,采用多视图建模方法建立飞机技术服务的业务流程模型．基于工作流技术开发技术服务平台,实现对飞机技术服务的过程化管理.在此基础上,从成本和效率两个角度对业务流程进行分析评价．提出了一套成本和效率分析指标,为企业改进服务流程提供数据依据和决策支持。     

基于Web Service及工作流技术的物流系统应用集成方案

物流企业内部及企业之间应用系统的集成问题已成为当前物流行业信息化的关键。本文分析了Web服务技术应用集成问题,利用工作流技术提出一种解决方案,该方案中应用以Web服务形式提供给工作流系统集成,同时给出基于此方案具体的体系结构以及工作流管理系统中的流程执行步骤。     

A systematic review on security in Process-Aware Information Systems – Constitution,challenges, and future directions

ContextSecurity in Process-Aware Information Systems (PAIS) has gained increased attention in current research and practice. However, a common understanding and agreement on security is still missing. In addition, the proliferation of literature makes it cumbersome to overlook and determine state of the art and further to identify research challenges and gaps. In summary, a comprehensive and systematic overview of state of the art in research and practice in the area of security in PAIS is missing.ObjectiveThis paper investigates research on security in PAIS and aims at establishing a common understanding of terminology in this context. Further it investigates which security controls are currently applied in PAIS.MethodA systematic literature review is conducted in order to classify and define security and security controls in PAIS. From initially 424 papers, we selected in total 275 publications that related to security and PAIS between 1993 and 2012. Furthermore, we analyzed and categorized the papers using a systematic mapping approach which resulted into 5 categories and 12 security controls.ResultsIn literature, security in PAIS often centers on specific (security) aspects such as security policies, security requirements, authorization and access control mechanisms, or inter-organizational scenarios. In addition, we identified 12 security controls in the area of security concepts, authorization and access control, applications, verification, and failure handling in PAIS. Based on the results, open research challenges and gaps are identified and discussed with respect to possible solutions.ConclusionThis survey provides a comprehensive review of current security practice in PAIS and shows that security in PAIS is a challenging interdisciplinary research field that assembles research methods and principles from security and PAIS. We show that state of the art provides a rich set of methods such as access control models but still several open research challenges remain.     

产业链协同SaaS平台业务流程定制安全技术研究

针对产业链协同SaaS平台企业群以盟主企业为核心的业务流定制过程中的流程规则编排、存储/访问以及执行控制3个环节可能存在的安全隐患,建立了基于数字签名及业务实例关联的业务流程安全控制模型,对XML数字签名和验证模式、存储策略及模型执行策略进行了研究,提出了基于用户身份认证和业务实例关联的安全签名、存储和执行算法。对该安全模型和算法在汽车产业链协同SaaS平台企业群车辆售后的三包业务流程定制和执行过程进行了验证,结果表明其能防止业务流程在编排、存储和执行过程中被非法篡改和调用。     

Association-Based Active Access Control models with balanced scalability and flexibility

In existing Active Access Control (AAC) models, the scalability and flexibility of security policy specification should be well balanced, especially: (1) authorizations to plenty of tasks should be simplified; (2) team workflows should be enabled; (3) fine-grained constraints should be enforced. To address this issue, a family of Association-Based Active Access Control (ABAAC) models is proposed. In the minimal model ABAAC₀, users are assigned to roles while permissions are assigned to task-role associations. In a workflow case, to execute such an association some users assigned to its component role will be allocated. The association's assigned permissions can be performed by them during the task is running in the case. In ABAAC₁, a generalized association is employed to extract common authorizations from multiple associations. In ABAAC₂, a fine-grained separation of duty (SoD) is enforced among associations. In the maximal model ABAAC₃, all these features are integrated, and similar constraints can be specified more concisely. Using a software workflow, case validation is performed. Comparison with a representative association based AAC model and the most scalable AAC model so far indicates that: (1) enough scalability is achieved; (2) without decomposition of a task, different permissions can be authorized to multiple roles in it; (3) separation of more fine-grained duties than roles and tasks can be enforced.     

PDM系统中流程管理模型的研究与实现

流程管理是PDM系统中实施业务过程管理与过程控制的一项关键技术。为了从整体上提高产品设计的效率,降低设计成本,提高设计业务管理水平和竞争力,在研究流程管理本质的基础上,开发了基于Web的流程管理模块。     

敏捷制造环境下的系统集成研究

系统集成包括两种含义：企业集成和信息系统集成。敏捷制造作为一种新的企业集成形式，是21世纪的工业生产和组织管理模式，强调企业对不可预测的市场环境快速响应和有效重构。敏捷制造对系统集成提出了更高的要求。敏捷制造环境下的信息系统应是分布、异构、可重构、可重用、可伸缩的。传统的信息系统体系结构难以适应敏捷制造环境。基于工作流管理系统的信息系统体系结构和基于多Agent系统的信息系统体系结构为敏捷制造环境下企业信息系统集成开辟了新的方向。     

基于工作流的制造企业应用集成框架研究

在阐述工作流定义、工作流管理系统的组成和应用的基础上 ,分析研究企业应用集成中的工作流关键技术 ,总结目前工作流建模、工作流分析、工作流执行和工作流互操作技术存在的不足 ,提出基于工作流的制造企业应用集成框架结构。这种基于工作流的制造企业应用集成既能有效实现PDM、ERP、SCM、CRM之间跨越时空、地域和供应链的信息集成 ,又能在人和应用间实现有效协同 ,最终实现系统的全局优化发展     

敏捷制造中产品设计过程管理

敏捷制造中的动态联盟是以产品开发为基础的 ,对产品开发进行有效的管理 ,可以大幅度缩短设计周期 ,提高设计质量。本文分析了敏捷制造中产品开发过程的特点 ,提出了采用基于 Web和智能体技术的工作流管理系统实现过程管理 ,并给出了该系统的体系结构和系统功能。     

柔性工作流在PDM中的应用研究

通过介绍工作流的柔性特点,阐述了柔性工作流在PDM中的作用,给出了PDM中的柔性工作流的设计思路,并说明柔性化的工作流设计可以提高PDM系统的灵活性和实用性。