To evaluate a physical quantity and to describe it on 2-dimentional plane, authors have introduced axisymmetric hexacosahedron which 26 solid angles derived from each polygon are all equal and divided all direction by the polyhedron. As many normal vectors of the polygons are controlled to appear on the same plane as possible. The method of determination of the parameters of the polyhedron is discussed and we apply the discrete method to describe flow of light and visibility.
The aim of this paper is to analyze KANSEI evaluation of diagram and children's developmental Stage. We can find several studies of KANSEI evaluation on adult testees, but very few studies on child testees. We will try to make it clear that a relation between a developmental stage of children and a formation of children's impression. The summary of the result is the following. 1) The distribution situation to each dimension of the impression word was different on developmental stages. We can understand the result of the case of elementary school fifth-year student is in the situation of unspecialization compared with other academic years especially. 2) The image score, except a fifthyear student, shows the trend similar to the case of a grown-up. 3) The clearness of the evaluation to the impression word has a tendency to become evident with development stage advancing.