Sasuke Miyazima, Tomoyasu Tanaka and Yasumi Miyahara
Department of Engineering Physics, Chubu University, Kasugai, Aichi 487, Japan Chubu-Daigaku Techno-Culture College, Nagoya 460, Japan
(Received July 1, 1990; Accepted November 1, 1990)
Keywords: Eden model, Epidemics, Lifespan, Maximum size
Abstract. A simple model which explains the maximum size (or weight) and the relationship between the lifespan and the weight is proposed. The cells and the subunits of creatures are assumed to have finite lifetimes and the density of the cells or subunits is a parameter. The longer the lifetime of cells or subunits, the larger creature is created.