Showing papers on "Service system published in 1971"

A Note on Marginal Allocation in Multiple-Server Service Systems

Abstract: In this note we consider the allocation of servers to a multiple facility service system. Each facility consists of a number of parallel channels and the arrival processes are Poisson. When service times are constant we prove that marginal allocation is an optimal and easily implemented solution technique and suggest that it is also optimal for exponential service times.

Building utility and service system

Abstract: A building utility and service system which can be modified and rearranged according to the changing demands and requirements of the building generally comprises one or more collector units which collect various incoming utilities and services and extend them to the floors in the building, distributor units which distribute utilities and services from a collector unit throughout each floor, and utilization units which dispense certain utilities and services from a distributor unit to one or more outlets on a floor utilizing those certain utilities and services. Each unit includes portable transport sections comprised of a plurality of individual pre-fabricated elements which can be added to or stripped from the transport sections to alter their capacities and various connectors, connecting lines and transition components having quick connect and disconnect capabilities which interconnect the elements of the units and provide flexibility to the system.

Finite waiting space bulk service system

Abstract: This paper discusses the ergodic queue length distribution of a bulk service system with finite waiting space by the method of the imbedded Markov chain. The system under consideration is a queuing system with Poisson arrivals, general service times, single server and where service is performed on batches of random size.

Urban health services of the future. Importance of systems definitions of health and disease.

Abstract: While the terms "disease" and "health" have several dictionary definitions, for the purpose of developing a service delivery system it is necessary to create operationally useful formulations. Since the way health and disease are defined is at once a function of who is doing the defining and who is developing the delivery system, the definitions developed by the provider of services differ from those developed by the consumer, and both of these differ from the formulation of a third party such as a government agency or an insurer, it is accordingly necessary that the present frame of reference be stated: The universe under consideration contains the strivings of urban peoples to eliminate and prevent disease and to approach a state of health; it also contains the facilities available for meeting those ends and is oriented toward planning for the future. It is not too great an oversimplification to state that

Evaluation of freeway emergency service systems using a simulation model

Abstract: THE CHRONOLOGICAL SEQUENCE OF EVENTS PERFORMED BY THE MAJOR COMPONENTS (POLICE, MECHANICAL, AND COMMUNICATION SERVICE) OF AN EMERGENCY SERVICE SYSTEM IN RESPONDING TO FREEWAY INCIDENTS HAS BEEN REPRESENTED IN A SIMULATION MODEL SO THAT THE PERFORMANCE OF THE SYSTEM CAN BE ANALYZED SYSTEMATICALLY. THIRTY SELECTED CANDIDATE SYSTEMS, BASED ON POSSIBLE COMBINATIONS OF MAJOR DETECTION AND SERVICE SUBSYSTEMS, WERE SIMULATED ON THE SAN FRANCISCO-OAKLAND BAY BRIDGE BY USING A SET OF HISTORICAL INCIDENT DATA. THE PERFORMANCE OF ALTERNATIVE SYSTEMS WAS EVALUATED SEPARATELY BY A COST-EFFECTIVENESS ANALYSIS AND A TOTAL SYSTEM COST PROCEDURE. THE COST MEASURE WAS EXPRESSED IN DOLLARS. THE MERIT OF VARIOUS EFFECTIVENESS MEASURES WAS DISCUSSED, AND THEIR CORRELATIONS WERE SHOWN. THE TOTAL DELAY TO ALL MOTORISTS AFFECTED BY THE INCIDENT WAS SELECTED AS THE REPRESENTATIVE EFFECTIVENESS MEASURE FOR THE EVALUATION. TOTAL SYSTEM COSTS FOR DIFFERENT VALUES OF TIME RANGING FROM $0/HOUR TO $5/HOUR WERE PRESENTED. AT A VALUE OF TIME OF $3/HOUR, BOTH ANALYSES RESUSLTED IN THE SAME BEST 5 SYSTEMS IN THE SAME ORDER. THE MOST PROMISING SYSTEM OF THE 30 SYSTEMS TESTED WAS THE ONE WITH CALL-BOX UNITS SPACED AT 1/4-MILE INTERVALS, 2 STATIONARY POLICE UNITS, AND 3 STATIONARY MECHANICAL SERVICE UNITS. THE MODEL HAS THE POTENTIAL TO BE EXTENDED TO INCLUDE OTHER SYSTEM COMPONENTS, SUCH AS MEDICAL SERVICE, AND CAN BE APPLIED TO DIFFERENT LOCATIONS. /AUTHOR/

A Functional Analysis of the Naval Weather Service System

Abstract: of A FUNCTIONAL ANALYSIS OF THE NAVAL WEATHER SERVICE SYSTEM The Naval Weather Service Command (NAVWEASERVCOM) is a decentralized, task-oriented military hierarchy. The Naval Weather Service provides world-wide marine environmental prediction services to U.S. and NATO forces and incidentally to some civil interests. The Naval Weather Service system is very nearly unique in that it spans the scientific disciplines of meteorology and oceanography. Several functions are common and basic to the operation of any environmental prediction service, military or civilian. An understanding of these functions is necessary for • the proper operation of an environmental prediction service and facilitates the appreciation of, and utilization of the service on the part of the user. They may be categorized as operatio~al or support: Operational Functions data acquisition data processing product formulation dissemination to users Support Functions equipment training and fleet liaison R&D management above the functional level Environmental data is acquired from the national and international environmental prediction community as well as from U.S. and Allied military sources. Data acquired from iii