Shuichi Matsumoto

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OBJECTIVE To investigate the effects of valacyclovir and prednisolone in comparison with those of placebo and prednisolone for the treatment of Bell's palsy, excluding zoster sine herpete. STUDY DESIGN Prospective, multicenter, randomized placebo-controlled study. SETTING Six academic tertiary referral centers. PATIENTS Ultimately, 221 patients with(More)
OBJECTIVE To investigate the therapeutic effects of acyclovir and prednisolone in relation to the timing of treatment in Bell's palsy. STUDY DESIGN This was a retrospective study of 480 Bell's palsy patients who were treated with oral acyclovir and prednisolone (94 cases) or prednisolone alone (386 cases). PATIENTS Patients met the after criteria: (1)(More)
The problem of planning safe kinematic approach trajectories for robotic capture of an uncontrolled rotating satellite is addressed, and two methods of trajectory planning are presented. The first method uses equations of orbital mechanics to plan a passive fly-by approach path for certain conditions of target satellite motion. The second method uses(More)
Travelling Direction Earth Target V-bar Approach R-bar Approach Fly-by Approach Radius Direction Fig. 1 V-bar, R-bar and Fly-by Approach Existing orbital transfer vehicles such as US Space Shuttles, Progress and Japanese H-IIA Transfer Vehicle (HTV) use a straight path approach to the International Space Station (ISS). The straight path approach has many(More)
Certain types of satellite failures, such as broadcast ephemeris messages that do not correspond to true satellite locations, can be difficult to detect by a Local Area Augmentation System (LAAS) ground facility (LGF) because satellites are observed from reference antennas that are very close together. Although ephemeris failures large enough to threaten(More)
The capture and recovery of an expensive satellite that has lost its attitude control function can be an important class of future missions for space robots. Moreover, there are tens of thousands of pieces of debris in orbit from previous missions. These orbiting debris such as the uncontrolled pieces of booster stages and obsolete satellites are a serious(More)