Koichi Asakura

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In this paper, we propose a task duplication based scheduling algorithm for avoiding useless duplication. In our algorithm, task duplication is divided into two phases: a task fill phase and a task duplication phase. In the task fill phase, tasks are duplicated and allocated to idle time slots in used processors. Namely, the task fill phase does not require(More)
In development of inter-vehicles communication (IVC) systems, simulation technologies are very essential to verify the correctness of protocols. We focus on a model of radio wave propagation for IVC simulation systems and approximate the model. As a land mobile communication model, we adopt Kaji model. In our model, a distance between vehicles, a building(More)
Various origami works are published as origami drill books in which a sequence of folding operations with simple diagrams is described. However, the book readers often give up following the instruction of the book halfway because it is too difficult to understand a way to fold in accordance with the diagrams. Therefore, we have developed an operational(More)