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This means, Petri Nets, coupled with classical information theory, provides quantitative measures of system capacity and thruput as well measures of \"the work done.\" Concepts of information-capacity and of information-work are derived from these probabilistically labeled Petri Nets based on analogies to thermodynamics. Thruput is measured as information-gain. Comments are made about the possible significance of these concepts, their relationship to classical thermodynamics, and the directions of continuing thought stimulated by these concepts.<\/jats:p>","DOI":"10.1145\/1041599.1041600","type":"journal-article","created":{"date-parts":[[2007,1,17]],"date-time":"2007-01-17T18:32:02Z","timestamp":1169058722000},"page":"4-15","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":3,"title":["Some steps toward an information system performance theory"],"prefix":"10.1145","volume":"1","author":[{"given":"Robert R.","family":"Johnson","sequence":"first","affiliation":[{"name":"Burroughs Corporation, Detroit, Michigan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[1972,9]]},"reference":[{"volume-title":"Mass.","year":"1962","author":"Petri Carl Adam","key":"e_1_2_1_1_1"},{"volume-title":"Mass.","year":"1970","author":"Anatol","key":"e_1_2_1_2_1"},{"key":"e_1_2_1_3_1","unstructured":"Anatol W. Holt Final Report of Information System Theory Project Applied Data Research Inc. Princeton N. J. February 1968 available from the Department of Commerce Clearinghouse Springfield Va. as Report Number AD 676--972.  Anatol W. Holt Final Report of Information System Theory Project Applied Data Research Inc. Princeton N. J. February 1968 available from the Department of Commerce Clearinghouse Springfield Va. as Report Number AD 676--972."},{"key":"e_1_2_1_4_1","unstructured":"Jeffrey A. Meldman&amp;Anatol W. Holt \"Petri Nets&amp;Legal Systems\" &lt;& Legal Systems\" &lt;Jurimetrics Journal December 1971.  Jeffrey A. Meldman&amp;Anatol W. Holt \"Petri Nets&amp;Legal Systems\" &lt;& Legal Systems\" &lt;Jurimetrics Journal December 1971."},{"key":"e_1_2_1_5_1","doi-asserted-by":"publisher","DOI":"10.1002\/j.1538-7305.1948.tb01338.x"},{"key":"e_1_2_1_6_1","doi-asserted-by":"crossref","unstructured":"R. V. L. Hartley BSTJ V. 7 pg. 535 1928.  R. V. L. 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