Kazunari Hashimoto

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In wireless mobile networks, ensuring quality of service (QoS) for real-time video applications is a challenge due to resource limitations. Nowadays, such a problem can be alleviated by exploiting the features of mobile computers equipped with multiple wireless interfaces, which can be used simultaneously for transmission/reception of data belonging to a(More)
This paper investigates the control performance of asynchronous and synchronous sensor systems in UAV applications. In addition, this paper is a first attempt to confirm theoretical results for performance of these systems, which we have shown, experimentally. The asynchronous and synchronous sensor system consists of two cameras, respectively, and a small(More)
In design process of manufacturing, designers analyze the factor of phenomena and apply solutions to phenomena (such as resizing, changing electrical circuits, and modification of mass). There may be often conflicts based on chain relations among solutions which designers cannot recognize. We focus on validating these solutions. In this paper, we propose an(More)
Efficient load balancing is an important requirement for intelligent engineering of traffic over all-IP satellite networks. In this regard, the authors have recently proposed an explicit load balancing (ELB) scheme for next-generation LEO/MEO satellite systems. In ELB, a congesting satellite requests its neighboring satellites to forward a portion of data,(More)
A method for quantifying working processes on manufacturing floors was established that uses a wearable sensor device and an ontology-based stream data processing system. Using this method, the measurement of manufacturing process efficiency from sensor data extracted from such a device worn by workers on the job was confirmed at the Fuji Xerox factory.
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