As a new type of organization form,virtual enterprise is believed to have many theoretical advantages,but these advantages have not been fully shown in practice yet.The paper intends to analyze the causes and to propo...As a new type of organization form,virtual enterprise is believed to have many theoretical advantages,but these advantages have not been fully shown in practice yet.The paper intends to analyze the causes and to propose ideas to solve the problem.Starting from the characteristics of virtual enterprise,the paper analyzes the factors hindering the practice of the virtual enterprises,evaluates the lack of existing models,and then comes to the conclusion that a unified, simplified model is more conducive to the realization of virtual enterprise according to the actual situation.Learning from the mechanism of enterprises cluster,the paper suggests a modeling framework for the new idea of virtual enterprise which is effective in operation.The main contributions of this modeling include:constitute a standardized operating platform to overcome the prime obstacle from the diversity of the partners for the practice of virtual enterprise;and set up a collaboration layer as the buffer mechanism between the partners and the database.展开更多
Virtual assembly is a Virtual Reality (VR) based engineering application which allows engineers to evaluate, analyze, and plan the assembly of mechanical systems. To model the virtual assembly process, new methodology...Virtual assembly is a Virtual Reality (VR) based engineering application which allows engineers to evaluate, analyze, and plan the assembly of mechanical systems. To model the virtual assembly process, new methodology must be applied. Based on the idea that the virtual assembly system is an event driven system, the interactive behavior and information model is proposed to describe the dynamic process of virtual assembly. Definition of the object-oriented model of virtual assembly is put forward.展开更多
Based on the analysis of a virtual enterprise and the development of supply chain management, their integration is proposed. Then, the difference between multi-agent system modeling method and the traditional modeling...Based on the analysis of a virtual enterprise and the development of supply chain management, their integration is proposed. Then, the difference between multi-agent system modeling method and the traditional modeling method is analyzed, and a method based on Java agent framework for multi-agent systems（ JAFMAS） is proposed. By using this method the virtual enterprise＇ s supply chain management system model is established.展开更多
Virtual enterprises (VEs) are the most promising structure for future enterprises. The cooperative environment of VEs is investigated in this paper. The cooperation in a VE is a process and the depth of the cooperati...Virtual enterprises (VEs) are the most promising structure for future enterprises. The cooperative environment of VEs is investigated in this paper. The cooperation in a VE is a process and the depth of the cooperation and the information transparency change in different phases of the cooperation. A tri-layered cooperative structure pattern is discussed with a tri-layered cooperative process model which includes the conceptual cooperation model, the detailed cooperation model, and the executive cooperation model. Analysis of the tri-layered process modeling provides a foundation for the cooperation environment.展开更多
The concept of Virtual Enterprise (VE) is closely related to the Global Manufacturing (GM) paradigm. A VE is established each time a new product development is required. How to develop a computer system which supports...The concept of Virtual Enterprise (VE) is closely related to the Global Manufacturing (GM) paradigm. A VE is established each time a new product development is required. How to develop a computer system which supports the product development in VE is an issue ti be discussed in this paper. The emphasis is placed on the product modelling in the VE context, and a new concept of information modelling called “heterogeneous data”situation is clarified, which is further related to the “Instance As Type”(IAT) phenomenon. Modelling for IAT is discussed.Modelling for the partner company behaviour is presented as well.展开更多
The concept of Virtual Enterprise (VE) is closely related to the Global Manufacturing (GM) paradigm. How to develop a computer system which supports the product development in VE is an issue to be discussed in this pa...The concept of Virtual Enterprise (VE) is closely related to the Global Manufacturing (GM) paradigm. How to develop a computer system which supports the product development in VE is an issue to be discussed in this paper. The emphasis is placed on the product modelling in the VE context. In the paper, a new concept of information modelling called ’heterogeneous data’ situation is clarified, which is further related to the ’Instance As Type’ (TAT) phenomenon. Modelling for IAT is discussed. Modelling for the partner company behaviour is presented as well.展开更多
Modelling enterprises include two essential tasks:data modelling for static properties and behaviours modelling for dynamic properties.Traditionally,the data modelling and behaviours modelling are separated in differe...Modelling enterprises include two essential tasks:data modelling for static properties and behaviours modelling for dynamic properties.Traditionally,the data modelling and behaviours modelling are separated in different phases and also in different description forms,e.g.the former is modelled in entity-relationship diagrams(ERDs),and the latter is modelled in data flow diagrams (DFDs).The separation could result in an incorrect description of the relationships between da- ta and behaviours,so that the enterprise model couldn't reflect the actual conditions and demands of the enterprise.In this paper an object-oriented approach integrating data with behaviours in a model for the Enterprises Management Information Systems(in short,EMISs)is proposed.As an isomorphic mapping of enterprises an object-oriented model can,in a natural form,exactly describe the dynamic and static properties of enterprises in an integrated model.Therefore it can be easily used by the end-users(e.g.the experts in accounting,financial reporting,and business managers) to specify their demands and communicate with the system analysts and designers.Based on the model an EMIS can be prototyped quickly,and then be conveniently evolved with inheritance mechanism to an adaptive application system according to the actual demands of the enterprise.展开更多
文摘As a new type of organization form,virtual enterprise is believed to have many theoretical advantages,but these advantages have not been fully shown in practice yet.The paper intends to analyze the causes and to propose ideas to solve the problem.Starting from the characteristics of virtual enterprise,the paper analyzes the factors hindering the practice of the virtual enterprises,evaluates the lack of existing models,and then comes to the conclusion that a unified, simplified model is more conducive to the realization of virtual enterprise according to the actual situation.Learning from the mechanism of enterprises cluster,the paper suggests a modeling framework for the new idea of virtual enterprise which is effective in operation.The main contributions of this modeling include:constitute a standardized operating platform to overcome the prime obstacle from the diversity of the partners for the practice of virtual enterprise;and set up a collaboration layer as the buffer mechanism between the partners and the database.
文摘Virtual assembly is a Virtual Reality (VR) based engineering application which allows engineers to evaluate, analyze, and plan the assembly of mechanical systems. To model the virtual assembly process, new methodology must be applied. Based on the idea that the virtual assembly system is an event driven system, the interactive behavior and information model is proposed to describe the dynamic process of virtual assembly. Definition of the object-oriented model of virtual assembly is put forward.
基金the National Natural Sciences Foundation under Grant No.50575065Anhui Province Natural Sciences Foundation under Grant No.03042306
文摘Based on the analysis of a virtual enterprise and the development of supply chain management, their integration is proposed. Then, the difference between multi-agent system modeling method and the traditional modeling method is analyzed, and a method based on Java agent framework for multi-agent systems（ JAFMAS） is proposed. By using this method the virtual enterprise＇ s supply chain management system model is established.
基金Supported by the National High- Tech Developm entProgram of China (No.86 3- 5 11- 944 - 0 15 ) ,Key Projectof Tsinghua University (985 ),and NetworkedManufacturing Project of Beijin
文摘Virtual enterprises (VEs) are the most promising structure for future enterprises. The cooperative environment of VEs is investigated in this paper. The cooperation in a VE is a process and the depth of the cooperation and the information transparency change in different phases of the cooperation. A tri-layered cooperative structure pattern is discussed with a tri-layered cooperative process model which includes the conceptual cooperation model, the detailed cooperation model, and the executive cooperation model. Analysis of the tri-layered process modeling provides a foundation for the cooperation environment.
文摘The concept of Virtual Enterprise (VE) is closely related to the Global Manufacturing (GM) paradigm. A VE is established each time a new product development is required. How to develop a computer system which supports the product development in VE is an issue ti be discussed in this paper. The emphasis is placed on the product modelling in the VE context, and a new concept of information modelling called “heterogeneous data”situation is clarified, which is further related to the “Instance As Type”(IAT) phenomenon. Modelling for IAT is discussed.Modelling for the partner company behaviour is presented as well.
文摘The concept of Virtual Enterprise (VE) is closely related to the Global Manufacturing (GM) paradigm. How to develop a computer system which supports the product development in VE is an issue to be discussed in this paper. The emphasis is placed on the product modelling in the VE context. In the paper, a new concept of information modelling called ’heterogeneous data’ situation is clarified, which is further related to the ’Instance As Type’ (TAT) phenomenon. Modelling for IAT is discussed. Modelling for the partner company behaviour is presented as well.
文摘Modelling enterprises include two essential tasks:data modelling for static properties and behaviours modelling for dynamic properties.Traditionally,the data modelling and behaviours modelling are separated in different phases and also in different description forms,e.g.the former is modelled in entity-relationship diagrams(ERDs),and the latter is modelled in data flow diagrams (DFDs).The separation could result in an incorrect description of the relationships between da- ta and behaviours,so that the enterprise model couldn't reflect the actual conditions and demands of the enterprise.In this paper an object-oriented approach integrating data with behaviours in a model for the Enterprises Management Information Systems(in short,EMISs)is proposed.As an isomorphic mapping of enterprises an object-oriented model can,in a natural form,exactly describe the dynamic and static properties of enterprises in an integrated model.Therefore it can be easily used by the end-users(e.g.the experts in accounting,financial reporting,and business managers) to specify their demands and communicate with the system analysts and designers.Based on the model an EMIS can be prototyped quickly,and then be conveniently evolved with inheritance mechanism to an adaptive application system according to the actual demands of the enterprise.
