We propose a method of problem-posing for improving students' problem solving ability in programming and develop a system for supporting to operate the method in actual classes. In the proposed method students pose problems by modifying examples provided by the teacher, and they evaluate problems posed by other students on the basis of the diversity. This paper describes the overview of the proposed method and the system, and the evaluation of the proposed method by introducing it into fundamental programming class.
We are currently developing a Regional Protection System in which children have terminals, and transponders installed at various locations receive packets sent from these terminals via a Specified Low-Power Radio System. The packets are then transmitted to a server so the positions of the children can be inferred from that information. With the ARIB STD-T67 access protocol used in this system, collisions frequently occur at locations where there are many terminals. Therefore, the authors improved a protocol in which frequent collisions do not occur, even when as many as 150 terminals gather in the same place. However, it was impossible to prevent frequent collisions when many terminals are concentrated in one place, such as in a school. A new access protocol was developed in this research to deal with this problem. In this protocol, transmission by terminals is suppressed at specific locations, and then resumed after the terminal moves away from those locations. However, the position of a terminal must not be lost when its transmission is being restricted. In this presentation, we propose this new access protocol, and evaluate its effectiveness.
In 2002, Shinshu University, Graduate School of Science and Technology on the Internet (SUGSI) was established. Over 200 students had enrolled for three years. Almost all the students are workers, so we provide some program to assist working student. Before establishment, we investigated about proper type of e-learning materials and developed the systems to provide many services for students. In 2004, the undergraduate course was established. In this paper, we described about the preparations for establishment and the current state of the virtual university by Shinshu University.
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