Future University Hakodate

About: Future University Hakodate is a education organization based out in Hakodate, Japan. It is known for research contribution in the topics: Network packet & Mobile ad hoc network. The organization has 485 authors who have published 1338 publications receiving 13204 citations. The organization is also known as: Mirai Daigaku (Future University) Hakodate Japan.

A temporary communication system using DTN for improving power consumption of mobile terminals

Abstract: The power supply interruption and the destruction of communications infrastructure in the event of wide area disasters make it difficult to communicate urgent information such as disaster situation and safety information. DTN (Delay Tolerant Network), which is an infrastructure-less communication technique, is one of the solution methods. However DTN has a problem of power consumption in order to realize information communication in a wide area disaster. The evacuees are assumed to communicate with others by their own mobile terminals in the disaster-stricken areas. Since these terminals have limited electric power, it is preferable to use a communication method considering power usage efficiency. In this paper, we propose a disaster-time communication system using a message ferry method for exchanging and collecting disaster situation and safety information. Also, in order to improve the power usage efficiency of the network on the proposed system, we propose and evaluate a method to efficiently utilize electric power for communication by setting multistage threshold for power remaining.

Ubiquitous cognition: mobile environment achieved by migratable agent

Abstract: We propose a concept of Ubiquitous Cognition and introduce an integrated agent for communication (ITACO) system based on the concept. To realize our proposed concept, the ITACO system tries to appropriately support a user using a migratable agent which is context-sensitive and gives continuous assistance. The key factor in this system is the construction of a relationship between the user and the agent, and to carry on this relationship between the user and the object that the agent has migrated to. Psychological experiments were carried out to verify this succession of the relationship between media. The results of the experiments showed that the subjects' attachment to the media as well as the relationship was succeeded through the media by the agent migration.

Universal game based on traditional children's outdoor games

Abstract: A universal game, Daruma, has been developed that can be played by both healthy people and people with physical limitations It is based on the Japanese variation of the traditional outdoor children's game Red Light, Green Light We devised two ways to play the game: one is by swinging an arm; the other is by tapping a desk with two fingers Players can select either of these choices, enabling people with physical limitations to enjoy the game We conducted experiments to verify their ease of play and to evaluate their degrees of enjoyment and utility We found that both ways of playing were appropriate for the visually impaired and that healthy people also enjoyed playing Daruma

Dwarf solitary waves and low tsunamis

Abstract: This work applies the regularized solitary wave theory to develop accurate computational method for evaluating the dwarf solitary waves, with amplitude-to-water depth ratio, α ≤10 −2 , as a useful model of one-dimensional tsunamis propagating in the open ocean. The algebraic branch singularities of these solitary waves magnifying with diminishing wave amplitude, making their computations insurmountable by existing methods, are removed by the regularized coordinates given by this new theory. Numerical examples show that this new method can produce accurate results even for α ≅10 −3 or less.