Risa Katsuma

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Previous research has shown that positive affect (PA) is associated with the coping strategies of "searching for and finding positive meaning." The purpose of this study was to investigate the relationship between the coping strategy of "finding positive meaning" and PA using an intervention method. Additionally, inasmuch as previous research has revealed(More)
In this paper, we propose a new method utilizing mobile sensor nodes to prolong WSN lifetime while maintaining a large sensing area. We formulate this problem as a problem in finding the best positions for mobile sensor nodes to maximize the integral of the sensing area for the remaining lifetime of WSN. This problem implies the Euclidean Steiner Tree(More)
In this paper, the Positive and Negative Affect Schedule for Children originally developed in 1999 by Laurent, et al. was adapted for use in Japan. In Study 1, a total of 763 children in Grades 4 to 6 completed this Schedule, and 103 of them completed it again about three months later. Principal factor analysis with promax rotation identified two factors,(More)
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