In recent years, there has been an increasing demand for elderly care in Japan due to the problems posed by a declining birthrate and an aging population. To deal with the problem, we aim to develop a multiple wheelchair robot system that moves with multiple companions collaboratively. In actual care, we noticed that for a group of four people, which included wheelchair users and their companio...

A patient presented with tetanus ten days after blunt trauma with a lawn mower. Our case describes the diagnosis and treatment of this patient with an infectious disease commonly seen in the developing world but rarely seen in the developed world.

Lawn mower-related injuries to children are relatively common and can result in severe injury or death. Many amputations during childhood are caused by power mowers. Pediatricians have an important role as advocates and educators to promote the prevention of these injuries.

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This paper describes the development of a robotic heavy duty lawn mower provided with a rich set of sensors which initially provide tele-operation mode capabilities but will support extension towards full autonomy via an intermediate mode termed teleautonomous to reflect a multilevel control structure which permits graceful withdrawal of human guidance as the development proceeds.