{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,8]],"date-time":"2026-04-08T21:36:59Z","timestamp":1775684219077,"version":"3.50.1"},"reference-count":10,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2006,10,24]],"date-time":"2006-10-24T00:00:00Z","timestamp":1161648000000},"content-version":"vor","delay-in-days":5563,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Concurrency: Pract. Exper."],"published-print":{"date-parts":[[1991,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The paper tells the story of the development over twenty\u2010five years of my ideas about communicating sequential processes. One of its most subtle and most useful facilities is the guarded choice, which appears as the ALT command in occam. Its subtleties are clarified and its usefulness increased by an understanding of the relevant simple algebraic laws, based on mathematical research conducted at Oxford. The abstractions provided by mathematics are the secret of the versatility of occam, which can be reliably and efficiently implemented by multiprogramming or by multiprocessing or by hardware, or by any combination of these. In conclusion, it is conjectured that the occam programming paradigm will remain the most efficient and most reliable for the general\u2010purpose shared\u2010store multiprocessors of the future.<\/jats:p>","DOI":"10.1002\/cpe.4330030403","type":"journal-article","created":{"date-parts":[[2006,11,18]],"date-time":"2006-11-18T06:19:28Z","timestamp":1163830768000},"page":"249-264","source":"Crossref","is-referenced-by-count":10,"title":["The transputer and occam: A personal story"],"prefix":"10.1002","volume":"3","author":[{"given":"C. A. R.","family":"Hoare","sequence":"first","affiliation":[]}],"member":"311","published-online":{"date-parts":[[2006,10,24]]},"reference":[{"key":"e_1_2_1_2_2","doi-asserted-by":"publisher","DOI":"10.1093\/comjnl\/5.2.127"},{"key":"e_1_2_1_3_2","doi-asserted-by":"publisher","DOI":"10.1007\/BF00289507"},{"issue":"10","key":"e_1_2_1_4_2","doi-asserted-by":"crossref","first-page":"549","DOI":"10.1145\/355620.361161","article-title":"Monitors: An Operating System Structuring Concept","volume":"17","author":"Hoare C. A. R.","journal-title":"Comm ACM"},{"issue":"3","key":"e_1_2_1_5_2","doi-asserted-by":"crossref","first-page":"209","DOI":"10.1093\/comjnl\/16.3.209","article-title":"A Structured Paging System","volume":"16","author":"Hoare C. A. R.","journal-title":"BCS Computer Journal"},{"key":"e_1_2_1_6_2","first-page":"424","volume-title":"Structured System Programming","author":"Welsh Jim","year":"1980"},{"key":"e_1_2_1_7_2","doi-asserted-by":"publisher","DOI":"10.1007\/3-540-07994-7_56"},{"issue":"8","key":"e_1_2_1_8_2","doi-asserted-by":"crossref","first-page":"666","DOI":"10.1145\/359576.359585","article-title":"Communicating Sequential Processes","volume":"21","author":"Hoare C. A. R.","journal-title":"Comm ACM"},{"key":"e_1_2_1_9_2","unstructured":"C. A. R.HoareandJ. R.Kennaway \u2018A Theory of Non\u2010Determinism\u2019 Proceedings ICALP '80 Springer Verlag LNCS No. 85 Berlin (1980) pp338\u201350."},{"issue":"3","key":"e_1_2_1_10_2","doi-asserted-by":"crossref","first-page":"560","DOI":"10.1145\/828.833","article-title":"A Theory of Communicating Sequential Processes","volume":"31","author":"Brookes S. D.","journal-title":"Journal of the ACM"},{"key":"e_1_2_1_11_2","unstructured":"A. W.RoscoeandC. A. R.Hoare \u2018The Laws of Occam Programming\u2019 Programming Research Group Technical Monograph PRG 53 Oxford University (1986)."}],"container-title":["Concurrency: Practice and Experience"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fcpe.4330030403","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/cpe.4330030403","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,23]],"date-time":"2023-10-23T03:09:18Z","timestamp":1698030558000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/cpe.4330030403"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1991,8]]},"references-count":10,"journal-issue":{"issue":"4","published-print":{"date-parts":[[1991,8]]}},"alternative-id":["10.1002\/cpe.4330030403"],"URL":"https:\/\/doi.org\/10.1002\/cpe.4330030403","archive":["Portico"],"relation":{},"ISSN":["1040-3108","1096-9128"],"issn-type":[{"value":"1040-3108","type":"print"},{"value":"1096-9128","type":"electronic"}],"subject":[],"published":{"date-parts":[[1991,8]]}}}