Classification tool developed for process specification language. (News Briefs).NIST (National Institute of Standards & Technology, Washington, DC, www.nist.gov) The standards-defining agency of the U.S. government, formerly the National Bureau of Standards. It is one of three agencies that fall under the Technology Administration (www.technology. researchers completed an initial version of the "twenty questions" tool for the developing international standard, Process Specification Language (PSL 1. PSL - Portable Standard Lisp. 2. PSL - Problem Statement Language. See PSL/PSA. ). This tool allows a domain expert who is not versed in formal semantic theory to quickly map real-world industrial concepts of process into rigorously specified definitions amenable to computerized manipulation. The work is based on an approach that uses invariants (properties of models of the core PSL theories that are preserved by isomorphism isomorphism (ī'səmôr`fĭzəm), of minerals, similarity of crystal structure between two or more distinct substances. Sodium nitrate and calcium sulfate are isomorphous, as are the sulfates of barium, strontium, and lead. ) to provide a rigorous classification of activities within PSL. The resulting classes of activities are being incorporated into the standards documents for Parts 41 and 42 within ISO (1) See ISO speed. (2) (International Organization for Standardization, Geneva, Switzerland, www.iso.ch) An organization that sets international standards, founded in 1946. The U.S. member body is ANSI. 18629. CONTACT: Michael Gruninger, (301) 975-6536; michbael.gruininger@nist.gov. |
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