Kazuo Yamafuji

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— A unicycle is an inherent unstable system in three dimensions. As shown by a human riding a unicycle, rider's complicated successive dynamic control actions are needed for the postural stability control of unicycle, and the rider's actions for stability are quite nonlinear and jerky. By emulating the performance of a human-riding-unicycle, we can do tests(More)
The posture stability and driving control of a human-riding-type unicycle have been realized. The robot unicycle is considered as a biomechanical system using an internal world representation with a description of emotion, instinct and intuition mechanisms. We introduced intelligent control methods based on soft computing and confirmed that such an(More)
Isolated para-aortic lymph node (PLN) recurrence from colorectal cancer (CRC) is rare, with no currently validated treatments. Few reports have described the successful resection of isolated PLN involvement from CRC following chemotherapy. We report the case of a 63-year-old man who underwent sigmoidectomy for sigmoid colon cancer at our hospital.(More)