出典:Wikipedia
出典:『Wikipedia』 (2011/03/02 21:56 UTC 版)
The Nelson complexity index was developed by Wilbur L. Nelson in a series of articles in Oil & Gas Journal in 1960-61 (Mar. 14, p. 189; Sept. 26, p. 216; and June 19, p. 109). In 1976, he elaborated on the concept in another series of articles, again in Oil & Gas Journal (Sept. 13, p. 81; Sept. 20, p. 202; and Sept. 27, p. 83). The term describes a measure of the secondary conversion capacity of a petroleum refinery relative to the primary distillation capacity.