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dc.contributor.authorRichards, Francis Russell
dc.date1973-02
dc.date.accessioned2013-02-27T23:38:26Z
dc.date.available2013-02-27T23:38:26Z
dc.date.issued1973-02
dc.identifier.urihttp://hdl.handle.net/10945/29529
dc.description.abstractThe Ships Supply Support Study, a study of supply support to the ships of the United States Navy under the direction of the Chief of Naval Operations, assumes that the availability of an item at a given echelon is independent of its availability at other echelons. A study of the validity of that critical assumption is made. A model of a multi-echelon supply support system which provides a history of the daily status of each entity in the system and a stock profile at each echelon is developed. Using randomly generated demands and current replenishment rules for a representative number of items generated at representative activities at each echelon, gross supply availabilities and conditional availabilities are calculated, and statistical tests of the assumption are made. Mean supply response times are computed using both the gross supply availabilities and the conditional availabilities to illustrate the impact of dependence among echelons. The tests indicate that the availability of an item at a given echelon can in many cases be strongly dependent on its availability at the other echelons. When this is so, the cost in terms of an increase in mean supply response time can be substantial. However, the independence hypothesis is not rejected whenever the gross supply availabilities throughout the system are either very nearly unity or zero. (Author)en_US
dc.description.urihttp://archive.org/details/studyofindepende00rich
dc.language.isoen_US
dc.publisherMonterey, California. Naval Postgraduate Schoolen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.subject.lcshDIMENSIONAL ANALYSIS.en_US
dc.titleA study of independence between supply echelonsen_US
dc.typeTechnical Reporten_US
dc.contributor.corporateNaval Postgraduate School (U.S.)
dc.identifier.npsreportNPS55RH7 3021A


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