文章基本信息

标题：食糧消費パターンの数量的研究 (第2報)
本地全文：下载
作者：田村真八郎 ; 石間紀男 ; 大沢文江等
期刊名称：日本栄養・食糧学会誌
印刷版ISSN：0287-3516
电子版ISSN：1883-2849
出版年度：1970
卷号：23
期号：9
页码：606-609
DOI：10.4327/jsnfs1949.23.606
出版社：Japanese Society of Nutrition and Food Science
摘要：One of the calculation methods of the future food consumption pattern was developed. A n dimensional pattern vector was thought to exist and move on the surface of the unit sphere in n dimensional space. A calculation method was studied on the next 2 assumptions, (1) a pattern moves on a straight line in the sphere surface, (2) infinite time is necessary to move from a boundary to another boundary of the first quadrant area. Firstly, a locus of pattern moving is expressed as vectors using a vector OP in which OA represents the present pattern, OB represents the past pattern and OP is a vector which has a right angle with vector OA. Secondly, the position of a future pattern is decided using the distance (radian) from the starting boundary point, according to the logistic curve equation, in which y is a distance from the starting point, t is a time and K, a_o and a₁ are parameters. In this study, the distance from the starting point to the targent point is used as the K value.