چارچوب شبیه سازی فدراسیون، عامل گردش کار برای توسعه سازمان های مجازی
|کد مقاله||سال انتشار||مقاله انگلیسی||ترجمه فارسی||تعداد کلمات|
|11397||2002||12 صفحه PDF||سفارش دهید||5599 کلمه|
Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)
Journal : Information & Management, Volume 39, Issue 4, January 2002, Pages 325-336
Traditional information system development approaches separate the domain model from the system model and then focus on the transformation between them. They are not, however, useful in rapid development of virtual organisations. This paper proposes a simulation-based development framework for establishing such organisations. It consists of a federation–agent–workflow (FAW) model, a set of rules for establishing the mapping from the domain into the virtual organisation, a set of management services, and a macro development process. Basic elements of the model are agents, which can perform active domain behaviour, and they are organised as autonomous federations. Agents within the same federation perform relevant tasks according to an overall workflow. Domain organisation is simulated by the multi-level agents whose behaviour are driven by a nested-workflow mechanism. The framework unifies the traditional domain organisation and information system model into a virtual organisation model, and this allows users to develop intuitive virtual organisations from the viewpoint of the domain. A comparison between the framework and the traditional information system approaches shows that the framework provides a simpler development process, so it meets the needs of virtual organisations for rapid and mobile development.
Currently, enterprises are facing the challenges from a fast changing production environment (due to such factors as market, technology, etc.), needs to reducing costs, globalisation of mass customisation, visualised management, and a move to individualised and conceptualised products . With the rapid development of the Internet, the demands for establishing virtual organisations are increasing ,  and . A virtual organisation can be described as a group of network-based systems that can simulate the structure and behaviour of the real domain organisations, and quickly and actively exploit fast-changing business opportunities. The domain organisation herein refers to either a real-world organisation or a conceptual organisation that did not exists in the real world before development. Compared with conventional information systems, virtual organisations have the following main characteristics: (1) autonomous management, virtual organisation can run according to predefined tasks and management rules; (2) active behaviour, any member can actively perform its task according to their own decision; (3) intuitiveness, virtual organisation is the simulation of the domain organisation; (4) adaptability and agility, virtual organisation can adapt to the changes in the domain organisation. The information infrastructure framework for virtual organisation management provides information exchange among the virtual organisation, its customers, and the general support techniques and approaches . Besides the information structure, the system architecture and the development approaches are the keys to the implementation of a virtual organisation. The strategies for planning the information system of decentralised organisations with autonomous sub-divisions and functional units were investigated in . The traditional information system development approaches are the ways to develop a virtual organisation, but these approaches model the domain business from the (software or hardware) system point of view, and it requires the users and the developers to be familiar with the domain, the development approach used, and the software system. The prototyping approach focuses on the evolution of the system from the system point of view. But users have to understand the system architecture, concepts, functions, and evolution from the system point of view. The structured approach separates the domain model from the system model and then focuses on the transformation between them through several stages; this results in a long development period, rigid development process, high cost, and the difficulty of understanding the specifications at different stages and the transformations between the specifications. Object-oriented approach uses an uniform “object” point of view to conceptualise the domain and the software systems. Graphical notation languages, such as UML , are used for establishing the domain model. Unfortunately, these languages are more suitable for developers. Domain users are seldom familiar with them. Besides, software tools are needed to assist the transformation from the system specification into an operational system. In the simulation field, a general high-level architecture (HLA) has been proposed for developing the simulation systems . A federation concept is defined as an autonomous domain object set that is to be used to simulate the real-world organisation. The behaviour simulation is supported by a run-time infrastructure. The purpose of the HLA is to facilitate the inter-operability between the simulation components and to promote their reusability. However, the object-based federation mechanism cannot reflect the active behaviour and the dynamic relationships between the behaviour. An agent technique can be used to simulate the active behaviour. Besides its object-orientation, an agent can actively perform tasks. Agent was formally described as automata in . Communication languages like KQML were proposed for communicating between multiple agents  and . The co-operations and negotiations in the multi-agent environments as well as the time constraints have been investigated . Agents can also be used to model qualitative decision-makers . The temporal coherence problems in the multi-agent systems have been investigated . In the software development field, the agent concept has also been used to establish a dynamic system model , but such development models are defined from the viewpoint of software. The main intent of this paper is to form a framework that can support the rapid, intuitive, and mobile development of virtual organisations from the domain point of view. We use a federation hierarchy to model the domain organisation architecture, use the agent mechanism to model the active domain behaviour, and use the workflow mechanism to model the control of the domain behaviour. Every basic federation consists of a set of related agents. Any agent actively performs its task according to the federation task, the intra-federation (inter-agent) workflow, and the intra-agent workflow. A nest-workflow is used to reflect the different-level work co-operation of the virtual organisation, and it is responsible for driving the multi-level virtual organisation to implement the tasks in the predefined logical order and temporal order.
نتیجه گیری انگلیسی
The proposed virtual organisation development framework consists of the FAW virtual organisation model, the rule set for establishing the mapping between the domain organisation and the virtual organisation, the implementation architecture of the virtual organisation, the virtual organisation management service set, and the macro development process. The main contribution includes three aspects. First, we unify the domain model and the system model into the virtual organisation model through simulation. This can bring four advantages: (1) the development process is simpler than the traditional information system development process; (2) the development work can be raised from the system (software and hardware) level up to the domain level, domain users can easily understand the concepts, the architecture, and the execution process of the system being developed, this can reduce the difficulty of the communication between the domain users and the designers during the development process, such a difficulty often occurs when using the traditional approaches; (3) the virtual organisation provides an intuitive vehicle for studying the domain organisation such as organisation optimisation and re-engineering, behaviour verification, evaluation, and estimation and (4) the virtual organisation can adapt to the changes of the domain business. Second, we proposed a new approach for domain modelling through integrating the federal management approach, the nest-workflow, and the agent mechanism. This enables the virtual organisation model to simulate the autonomous characteristic of domain organisations, the active individual behaviour, the temporal order and dependence order relationships between the behaviour. Third, we established the development framework to support the rapid and mobile development of the virtual organisation.