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A proposal of estimation system for concentration situation by using acceleration sensor

Recently, to discipline to increase powers of concentration is popular. One of the reason, it is difficult to concentrate something in these days because of a flood of information. However we discipline our concentration by using the how-to books and the portable games, we cannot evaluate the training effect on the practical life. In this paper, we propose an evaluation system for user's powers of concentration in which the method for the estimate user's sitting situation is utilized. This system is constructed by two kinds of method, one is the method which estimates the sitting situation and the other is the evaluation method for user's powers of concentration situation. These methods use user's motion that is obtained from the acceleration sensor that is fixed on the chair. And we prepare the three kinds of Graphical User Interface (GUI) which presents the concentration situation to the user.