No abstract
and accessibility of scientific information generated within NBS and other agencies of the Federal Government; promotes the develop ment of the National Standard Reference Data System and a system of information analysis centers dealing with the broader aspects of the National Measurement System; provides appropriate services to ensure that the NBS staff has optimum accessibility to the scientific information of the world, and directs the public information activities of the Bureau User Control in PREPRO. In summary, the simulation approach has been selected as the methodology for studying the SAR problem because of its several advantages few disadvantages and high probability of success.-13 -3.Design of the Simulation These added events will, for example, allow a resource enroute to a case to be diverted to another case of higher priority (i.e., interrupt)It will also allow a case in progress to have its priority change (in either direction) to reflect changing conditions and assistance already received.Since the Coast Guard desired to investigate alternative resource mixes, it was not sufficient that the simulation merely assign the same resource type to a given case as was assigned historically. Therefore, a highly sophisticated set of resource assignment algorithms had to be designed such that the preferred resource (or resources, for a multi-resource case) is selected from all the existing resources being simulated for assignment to each case. The provision for priority interrupt, of course, further complicates these algorithms.The resource assignment algorithm for long* search cases is *Cases involving searches of less than one-half hour duration are handled separately.-17 -somewhat more complex than for non-search cases because of the widely differing capabilities for search among the various resource types.However, the servicing of a search case in the model is less detailed than the servicing of a non-search case. This is due to the limited data available in the data base on how the search was carried out (e.g., search pattern, track width, etc. are not given) and also due to the relatively minor incidence of long search cases in the overall SAR system.Only a small fraction of the total SAR caseload involves a long search requirement. However, when such a case does come up, it consumes a considerable amount of (usually expensive) resource time.Therefore, the objective of servicing long search cases in the simulation was mainly to account for this resource utilization when the relatively unlikely event of a long search comes up --because the resources occupied on a search case will not be available (unless interrupted)for the more common non-search cases. Hence the level of detail need not be as fine for these long search cases. Selection of Programming LanguageAs a result of a comprehensive analysis of the available programming languages and associated computer systems, the SIMSCRIPT 1.5 language was chosen for basic operational module of SARSIM. A report entitled:"Selection of Programming Language," ...
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