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MPCS - THE MANUFACTURING PROCESS-CONTROL SYSTEM

AT&T TECHNICAL JOURNAL 1986年第4期65卷 35-45页

作者： dUNIETZ, IS HSU, JLC MCEACHERN, MT STOCKING, JH SWARTZ, MA TROMBLY, RM The authors Irwin S. Dunietz John L.C. Hsu Michael T. McEachern James H. Stocking Mark A. Swartz andRodney M. Tromblyare responsible for design and development of the Manufacturing Process Control System. Mr. Dunietz joined AT&T in 1980. He is a member of the technical staff in the Manufacturing Information Automation department at AT&T Engineering Research Center Princeton New Jersey. He received an A.B. in mathematics from Cornell University and an M.S.E. in computer science from Princeton University. Mr. Hsu who joined AT&T in 1970 is a department head in the Manufacturing Information Automation department at the Engineering Research Center. He received an M.S. in electrical engineering from the University of Missouri. Mr. McEachern joined AT&T in 1962 and is a supervisor in the 5ESS™ Line Unit Manufacturing department at AT&T Technologies in Oklahoma City Oklahoma. He is responsible for the manufacturing process control center in Oklahoma City which provides computerized support for all circuit pack manufacturing. Mr. Stocking who joined AT&T in 1975 is a supervisor in the Manufacturing Information Automation department at the Engineering Research Center. He received a B.S. in chemical engineering from Rensselaer Polytechnic Institute and a Ph.D. in chemical engineering from the University of California Berkeley. Mr. Swartz joined AT&T in 1980 and is a member of the technical staff in the Manufacturing Information Automation department at the Engineering Research Center. He received an A.B. in computer science from Cornell University and an M.S. in computer science from Rutgers—The State University. Mr. Trombly who joined AT&T in 19 78 is an assistant manager at the AT&T Merrimack Valley Works in Massachusetts. Previously he was a supervisor at the Engineering Research Center. He holds a B.S. in computers and systems engineering and an M.S.E.E. from Rensselaer Polytechnic Institute.

The central challenge of all manufacturing is making products to the right standards and delivering them at the right time. AT&T is upgrading its corporate and factory resource planning systems to improve control of day-to-day manufacturing. The Manufacturing Process Control System (MPCS), developed at the AT&T Engineering Research Center (ERC), provides this support. MPCS connects the shop floor with production scheduling, accounting, product data archive, and engineering support systems.

关键词： PROdUCTION CONTROL

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Utilization of a Migrant Outreach Nursing Service

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The Journal of Rural Health 1986年第2期2卷 37-45页

作者： Mendelson, Marilyn A. Plews‐Ogan, James Johnson, Jeffrey A. MARILYN A. MENDELSON Ph.D. is Director of Evaluation Office of Education and Associate Professor of Family and Community Medicine at the Eastern Virginia Medical School. She was formerly the Associate Director of the Eastern Virginia Area Health Education Center. She received a doctorate in educational psychology from Michigan State University in 1974 and has previously served on the faculties of the Medical University of South Carolina and the University of Miami (Florida). Among her most recent publications are an article in Research in Nursrng and health and co-editorship of Comprehensrve Reziew of the Basic Sciences (Health Science Consortium 1985) JAMES PLEWS-OGAN R.N. M.S. is a nurse practitioner with the Harvard Community Health Plan. Formerly he was the Co-Director of the Delmarva Rural Ministries in Virginia. Mr. Plews-Ogan received his degree in nursing in 1081 from Pace University-Ogan JEFFREY A. JOHNSON M.P.A. is Assistant Deputy Director of the Area Health Education Center (AHEC) of the Eastern Virginia Medical School. Mr. Johnson received his graduate degree from Old Dominion University and has previously served as an Evaluation Specialist in the AHEC program

The utilization of an outreach primary care health service provided by nurse practitioners to the migrant farm work population on the Eastern Shore of Virginia in 1984 was examined by migrants’ethnicity, gender, and age. Seventy percent of a population of Black, Mexican American, and Haitian workers and dependents were seen in 5,937 camp encounters. The population and first‐encounter patient distributions were equivalent except for gender: relatively more moles than females received service. First‐ and subsequent‐encounter distributions were disproportional for ethnicity, gènder, and age: subsequent service was provided more frequently to Blacks, females, and patients over 30 years of age. High penetration and subsequent rates were obtained for this comprehensive, readily accessible health service. Copyright © 1986, Wiley Blackwell. All rights reserved

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The Role of Special Master in Institutional Reform Litigation: A Case Study

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Law & Policy 1986年第3期8卷 275-321页

作者： LEVINE, MURRAY Professor of Psychology at the State University of New York at Buffalo and Director of the Clinical Area. He also directs the Child Clinical Psychology and Law Program a cooperative venture between the State University of New York at Buffalo School of Law and Jurisprudence and the Department of Psychology. He received his Ph.D. in Psychology in 1954 from the University of Pennsylvania and his J.D. from the State University of New York at Buffalo in 1983. He is licensed as a psychologist in New York and was admitted to the bar in New York in 1984 *This research was completed under support from the National Science Foundation Law and Social Science Program Grant No. SES-8023954 and under a Fellowship from the Foundation for Research in Psychiatry during the academic year 1981–1982. The special masters and court monitors were intelligent articulate gracious and generous with their time. It was a great pleasure to work with them. I also wish to thank my graduate assistant Tom Burns who made himself familiar with the material and helped in formulating the ideas expressed in this paper.

Wuori v Zitnay (1975), an institutional reform case, came to a successful resolution within a relatively few years. This case study describes the change process from the perspective of the special master and reports on devices used to sustain the changes after the court relinquished active supervision. The case study describes the functioning of masters in other cases to show the comparability of the processes. The special master undertakes change agent activities which are not in keeping with the model of a quasi‐judicial role. The master preserves the court's legitimacy by providing a buffer which allows the court to maintain a neutral stance when implementation problems are brought to its attention. Copyright © 1986, Wiley Blackwell. All rights reserved

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TRAFFIC CAPABILITIES OF 2 REARRANGEABLY NONBLOCKING phOTONIC SWITCHING MOdULES

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AT&T TECHNICAL JOURNAL 1985年第10期64卷 2331-2373页

作者： THOMPSON, RA AT&T Bell Laboratories. Richard A. Thompson: B. S. (Electrical Engineering) 1964 Lafayette College M. S. (Electrical Engineering) 1966 Columbia University Ph.D. (Computer Science) 1971 University of Connecticut AT&T Bell Laboratories 1963–1968 1977—.

The architectures of two small switching networks are compared as potential implementations of a 4 × 4 photonic switching module. Such a module would be made by interconnecting several 2 × 2 photonic directional couplers on a single LiNbO 3 substrate. While both networks are rearrangeably nonblocking, we investigate whether one network requires significantly more rearrangements than the other. The analysis includes transient, Monte Carlo simulation, and Markov steady-state techniques. We conclude that the traffic capabilities of the two structures are not significantly different, and that selection of an architecture can be based on other criteria, like loss, crosstalk, or ease of manufacture.

关键词： TELEphONE SYSTEMS, AUTOMATIC

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AN ALGEBRAIC APPROACH TO A NONPROdUCT FORM NETWORK

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AT&T TECHNICAL JOURNAL 1985年第10期64卷 2505-2523页

作者： YOO, SW AT&T Information Systems. Seung W. Yoo: B.S. 1972 Seoul National University Korea M.S. 1980 Ph.D. (Computer Science) 1983 University of Kansas AT&T Bell Laboratories 1983–1985 AT&T Information Systems 1985—.

By applying an algebraic approach to the method of stages, an explicit solution is derived for a closed network consisting of a nonexponential server and a service station with two identical nonexponential servers in parallel. There is a finite number of jobs and the queueing discipline is first-come-first-served in the closed network. The solution is described in a quasi-matrix-geometric form, which is a generalization of the matrix-geometric form.

关键词： computer NETWORKS

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SYSTEM-75 - MAINTENANCE ARCHITECTURE

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AT&T TECHNICAL JOURNAL 1985年第1期64卷 229-249页

作者： LU, KS PRICE, Jd SMITH, TL AT&T Information Systems Laboratories an entity of AT&T Information Systems Inc. Kang-sen Lu: B.S. (Physics) 1974 National Tsing-Hua University M.S. (Computer Science) 1976 National Chiao-Tung University Ph.D. (Computer Science) 1981 University of Pennsylvania AT&T Bell Laboratories 1981–1982 AT&T Information Systems Laboratories 1983—. AT&T Consumer Products. John D. Price: B.S. (Electrical Engineering) 1977 Cornell University M.S. (Computer Engineering) 1978 Carnegie-Mellon University Bell Laboratories 1977–1982 AT&T Information Systems Laboratories 1983–1984 AT&T Consumer Products 1984—. Thomas L. Smith: B.S. (Electrical Engineering) 1967 and M.S. (Electrical Engineering) 1969 The Massachusetts Institute of Technology Bell Laboratories 1969–1982

Reliable service has been a cornerstone of customer premises communications systems for years. System 75 office communications system hardware and software have been designed to continue that high degree of reliability and availability. The hardware has been designed to detect and correct errors as they occur, to minimize the number of components that cause system outage, and to simplify fault isolation to a replaceable component. The software has been designed to recover from intermittent failures and to continue providing service with a minimum of disruption. These features have been implemented in the software as a group of processes running under a real-time operating system, which simplifies building and testing the software and makes it easy to extend its functions.

关键词： dIGITAL COMMUNICATION SYSTEMS

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INVERTEd dECISION TABLES ANd THEIR APPLICATION - AUTOMATING THE TRANSLATION OF SPECIFICATIONS TO programS

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AT&T TECHNICAL JOURNAL 1985年第2期64卷 533-558页

作者： LEVY, LS STUMP, HT AT&T Bell Laboratories. Leon S. Levy: B.A. (Physics) 1952 Yeshiva College S.M. (Applied Science) 1955 Harvard M. E. (Applied Mathematics) 1958 Harvard Ph.D. (Computer and Information Science) 1970 University of Pennsylvania AT&T Bell Laboratories 1979—. AT&T Bell Laboratories present affiliation Bell Communications Research Inc. H. Theodore Stump: B.A. (Mathematics) 1967 Franklin and Marshall College M.S. (Applied Mathematics) 1970 Stevens Institute of Technology Bell Laboratories 1967–1976 New Jersey Bell Telephone 1976–1979 Bell Laboratories 1979–1983.

Code generation techniques are used to program an application characterized by complexity arising from many special cases, and rapid changes due to advances in the state of the art. A formal notation—an inverted decision table written in a propositional logic form—is developed as a means for allowing expert users to describe the application in a knowledge base that code generators then can use to create production code. The complete system described in the paper automatically transforms a one thousand-page specification into a running program. The development of this system is an example of the formalization of the specification of a complex application. In this case the application is a part of the Job Management Operations System, an operational support system to aid regional Bell Operating Company construction and engineering processes. The techniques described, however, can be generalized.

关键词： computer SYSTEMS programMING

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A METHOdOLOGY FOR SETTING COMBAT SYSTEM REQUIREMENTS

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NAVAL ENGINEERS JOURNAL 1985年第4期97卷 274-278页

作者： MENSH, dR The Author received his B.S. and M.S. degrees in applied physics from Loyola College in Baltimore Md. and the American University in Washington D.C. He also has completed his course work towards his Ph.D. degree in computer science specializing in the fields of system analysis and computer simulation. He has been employed at the Naval Surface Weapons Center White Oak Laboratory Silver Spring Md. for the past eighteen years in the areas of weapon system analysis and the development of weapon system simulations. Since 1978 he has been involved in the development of simulation tools that can be applied to the solution of shipboard combat system architecture and engineering problems. Currently at the White Oak Laboratory he is responsible for the application of and further development of the single ship combat system simulation.

This paper describes a methodology for setting combat system requirements for all ship classes. The requirements are determined from a battle group perspective. The methodology uses ship damage as a measure of effectiveness for setting combat system requirements. The ship damage data used was derived from the Navy tactical game (NAVTAG). The methodology that determines ship class combat system requirements consists of a set of logical steps that are iterative by design. It provides insight and valid estimates of numerical measures of defined force requirements at several levels. This process is not trivial; the expected level of effort could be significant. The method consists of five basic stages considered necessary to achieve valid results. These stages are (1) determination of force level requirements, (2) determination of force level capability, (3) analysis of force level capability, (4) determination of class requirements by battle overviews, and (5) determination of class requirements — overall. The methodology was used by the combat system master plan (CSMP) manager for determining top level combat system requirements for individual platforms in a battle group. In addition, once levels of combat system performance have been defined, this methodology generates a quantitative data base that becomes a useful tool in ship combat suite selection. Once alternate combat system suites have been defined, these suites can be analyzed in terms of combat system performance capability versus cost.

关键词： NAVAL WARFARE

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APPROXIMATE ANALYSIS OF A GENERALIZEd CLOCKEd SCHEdULE

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AT&T TECHNICAL JOURNAL 1985年第2期64卷 597-615页

作者： FREdERICKS, AA FARRELL, BL dEMAIO, dF Authors are employees of AT&T Bell Laboratories. Albert A. Fredericks: B.S. (Mathematics) 1962 Fairleigh Dickinson University M.S. Ph.D. (Mathematics) 1965 and 1970 respectively Courant Institute New York University AT&T Bell Laboratories 1961—. Brian L. Farrell: B.S. (Mathematics Computer Science) 1978 St. Peter's College M.S. (Operations Research) 1982 Columbia University AT&T Bell Laboratories 1978—. Darlene F. DeMaio: B.A. (Mathematics) 1976 Lycoming College M.S. (Industrial and Applied Mathematics) 1981 Polytechnic Institute of New York AT&T Bell Laboratories 1976—.

Clocked schedules represent an important method of task scheduling for computer systems with real-time applications. In this paper we consider a generalized class of clocked schedule that includes those used in many stored program control switching systems. Key performance measures for this class are discussed, and an analytic approximation method for analyzing certain of these measures is given. This approximation method is most applicable in evaluating long-term delays. (A companion paper by doshi addresses short-term delays for systems with extremely time-critical tasks.) Comparisons are made with exact numerical results (obtained using the method presented in a companion paper by Ackroyd), detailed simulation models, and field data.

关键词： computer SYSTEMS, dIGITAL

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SYSTEM-75 - SWITCH SERVICES SOFTWARE

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AT&T TECHNICAL JOURNAL 1985年第1期64卷 197-212页

作者： dENSMORE, W JAKUBEK, RJ MIRACLE, MJ SUN, JH All authors are members of AT&T Information Systems Laboratories an entity of AT&T Information Systems Inc. Wayne Densmore: B.S. (Electrical and Computer Engineering) 1975 Clarkson College of Technology M.S. (Electrical and Computer Engineering) 1976 Clarkson College of Technology AT&T Bell Laboratories 1976–1983 AT&T Information Systems Laboratories 1983—. Ray J. Jakubek: B.S. (Electrical Engineering) 1967 Manhattan College M.S. 1968 and Ph.D. (Electrical Engineering) 1973 New York University Bell Laboratories 1968–1982 Michael J. Miracle: B.S. (Electrical and Computer Engineering) 1979 University of Wisconsin M.S. (Electrical Engineering) 1980 Stanford University AT&T Bell Laboratories 1979–1982 John H. Sun: B.S. (Electrical Engineering) 1972 National Chiao-Tung University Taiwan M.S. (Computer Science) 1977 University of Connecticut Taiwan Telecom Research Laboratories 1974–1975 ACCO-Bristol Company 1978 Bell-Northern Research 1979 AT&T Bell Laboratories 1980–1982

The switch services software of System 75 provides the basis for an extensible office communication system, supporting a wide variety of voice and data-switching services. This paper presents the software architecture of the System 75 switch services. The concepts of user, group, and process-per-call form its foundation. We introduce the architecture by stepping through a simple station-to-station phone call, and proceed to the derivation of a call model based on the topology of a call. This call model is realized as a layered set of cooperating processes that execute under the Oryx/Pecos Operating System on the System 75 switch processor. The software layers and processes are discussed and a call walk-through is used to illustrate the process interactions.

关键词： dIGITAL COMMUNICATION SYSTEMS

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