Showing papers on "Service (systems architecture) published in 1973"

Large Diameter Pipe under Combined Loading

Abstract: The writers consider the planning and performance of a full-scale test program on 30 ft. long, 4 ft. diam pipe sections. The combined loadings applied in these tests simulate the force and displacements anticipated to be introduced in the underground portion of the trans-Alaska pipeline under service conditions. Experimental results are presented, and a comparison with theoretical data are included.

Measuring and modelling man-computer interaction

Abstract: The Dialogue Monitor has been developed as a tool for the measurement of computer service. The objectives of such measurement are defined. A set of models and measures is developed. Operation of the Dialogue Monitor and analysis of the data obtained are briefly discussed.

Experience with the AEP 765-kV System: Part II - System Performance

Abstract: This paper discusses the system performance aspects of AEP's experience with its 765-kV transmission network. The first segment of this network was energized in May 1969. Since that time, a total of 670 miles of 765-kV transmission has been placed in operation. This paper reviews the experience accumulated thus far with bringing segments of 765-kV transmission into service, as well as with real and reactive power flow, reactive compensation and supply, voltage control, and 765-kV equipment spare requirements.

Systems Approach to a Taxonomy of Disadvantagement.

Abstract: An effort to develop a classification of various kinds of disadvantegement is aimed at the efficiency that can be gained by providing only those services to those clients who can use them in order to increase their chances of successful placement. The report details some of the elements of the recommended approach: analysis of manpower situations in terms of inputs to clients and process objectives; identification of those client, responses which delay or preclude achievement of those objectives; and construction of a classification of strategies for dealing with such "ineffective" responses so as to facilitate goal attainment. The proposed classification scheme is illustrated, and its potential for efficiency of service and staff accountability for goal achievement is discussed. Finally, the report discusses cha'racteristics of an organizational structure for manpower agencies necessary for implementation of the scheme, and the research questions which must be answered to operationalize the system. (Author) "S ISEP:.RTMENT OF HEALTH EDUCATION WELFARE NATIONAL INSTITUTE OF COLIC/. TON

CAN-SDI: experience with multi-source computer based current awareness services in the National Science Library, Ottawa.

Abstract: CAN/SDI is Canada's national Selective Dissemination of Information Service offering a choice of nine data bases to its scientific and technical community. The system is based on central processing at the National Science Library combined with the utilization of decentralized expertise and resources for profile formulation and user education. Its greatest strength lies in its wide interdisciplinary quality. The major advantage of centralized processing of many data bases is that Canadians need learn only one method of profile formulation to access many files. A breakdown of services used confirms that a single tape service does not cover all the information requirements of most users. On the average each profile accesses approximately 1.5 data bases. Constant subscriber growth and a low cancellation rate indicate that CAN/SDI is and will continue to be an important element in Canada's information system.

General purpose computer dispatching system

Abstract: THE ADVANTAGES OF A COMPUTER OPERATED DIAL-A-BUS SYSTEM ARE DETAILED. VEHICLE PRODUCTIVITY MAY BE HEIGHTENED AND A CONSISTENT, EFFECTIVE, DISPATCH SERVICE COULD BE ACHIEVED. OVERALL COSTS COULD BE REDUCED BY INTRODUCING DIGITAL COMMUNICATIONS (THUS REDUCING THE NEED FOR DISPATCHERS) AND BY ARRANGING FOR A DIRECT INPUT OF REQUESTS FOR SERVICE. AUTOMATIC BILLING AND THE USE OF STANDARD TRIPS ARE FURTHER MEASURES IN THIS DIRECTION. SOME OF THE REQUIREMENTS THAT MUST BE FULFILLED BY THE COMPUTER ARE, RELIABILITY AND ADDRESS-TO-COORDINATE TRANSLATION. MACHINE SIZE, PROGRAMMING LANGUAGE, OPERATING COSTS AND ADAPTABILITY, ARE ALL IMPORTANT CONSIDERATIONS IN CHOICE AND DESIGN OF THE COMPUTER SYSTEM. THE MANUALLY OPERATED TEST PHASE OF A DIAL-A-RIDE SERVICE MAY BE FOLLOWED BY A SERVICE WHICH IS OPERATED BY A MEDIUM SIZE COMPUTER PROGRAMMED DISPATCH SYSTEM, IF STUDIES INDICATE IT TO BE FEASIBLE. FURTHER DEVELOPMENT COULD INVOLVE THE USE OF A MORE POWERFUL SYSTEM WITH FEATURES SUCH AS STANDARD TRIPS AND DIGITAL COMMUNICATION INTERFACES. THE SYSTEM DEVELOPED BY M.I.T. IS DESCRIBED. THE QUESTION OF HOW MUCH A COMPUTER WILL IMPROVE SERVICE MAY BE ANSWERED BY STUDIES OF SYSTEMS SUCH AS THE ROYAL CAB IN DAVENPORT, IOWA AND THE HADDONFIELD PROJECT.

Design OF Lo+Distance Telecommunitiation Networks- The Telpak Problem

Abstract: The government procures long-distance circuits from communication carriers under a bulk-rate tariff referred to as Tel- paks. While physical implementation of circuits is performed by the carriers, @e arrangement of cti,cuits into Telpaks for billing purposes is the government's responsibility. Since Telpaks were established in 1961, the government has arranged its circuits into Telpaks on a manual basis. As a result, it has never been able to achieve a mini- mum cost grouping for over 60 000 circuits among more than 3000 service points. Further, the problem of minimizing the cost of Telpaks has defied classical mathematical approaches because of the large number of service points and circuits. By applying heuristic design techniques, the systematic procedure which is described in this paper has been developed for automating the design of the government Telpak network. Its use has resulted in substantial cost savings over the manually obtained configuration.