this research wants to consider the formation process of outline and spotted shapes in prehistoric periods. the light and the various form of its reflection, which appears as a shadow, silhouette and lightfast, and the way of facing human with nature surrounding him, is the theoretical base of this paper. light is one of the important elements in nature which help human to know and comprehend i...

introduction: consumption of morphine, during pregnancy, in addition to inducing defects in the mother’s nervous system function, caused defects or delays in the formation and evolution of embryonic visual system. in the present study, changes in lens development were assessed in embryos exposed to morphine in utero. methods: female wistar rats (250-300 g) were mated with male rats and pregnanc...

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In this paper we present a system that could be used to help people with walking disabilities. A system consists of a prototype mobile robot platform equipped with a control board and a remote computer system, running with image processing algorithms, was used to develop a system for physically disabled human to move freely in an environment. We used a camera to get visual information by a huma...