Kawabata Ryo

STD (State Transition Diagram) is used to analyze the system from "state" and "transition" perspective. But, the existent STD can't describe concepts such as states of two or more personnel, synchronization between personnel and time advance which are necessary to model the collaborative systems. This paper proposes Timed STDs with the three concepts, and models the collaborative systems with this diagram. And the authors developed the simulator to show an animation of transition and synchronization and to analyze the performance parameters such as utilization.

The development of Ontology for Domains and Inter-Domains is considered from the viewpoint of Component and Task. Therefore, the recycling method of described Ontology and the description method of reusable Ontology are examined. The Ontology of Trust of Work is described as an example of the described Ontology. Task Ontology is described along the case grammar and the commitment network. Component Ontology is extracted from Task Ontology, and the relation of the component is described. This description method and the recycling method were implemented with Excel VBA.

In this study, we propose the system for the allocation of personnel to multiple projects. Execution of multiple projects often requires the same personnel at the same time interval. This can create conflicts, leading to unexpected delays in the completion of the projects. So far, project manager solves such problems by changing parameters such as the number of workers and the deadline. But it needs more cost. Therefore, the system uses the "task fragmentation" method to solve such problems without changing those parameters. This method gives the project manager greater flexibility in allocating the personnel needed for multiple projects. With this method, multiple projects can be run on a desirable schedule and completed before the deadlines.

The authors translated diagrams for System analysis and design to Prolog formed description, and developed the method for Reuse diagrams. As a method to search reusable diagrams, the authors developed the search method with diagram's structure. The search method is not only adaptable to identical type of diagrams but different type of diagrams. The authors developed conversion method for different type of diagrams.