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271.
In recent years many large government and commercial organizations have developed large-scale management information systems. During the early phases of any system development, questions are likely to be raised concerning the criteria of completeness and accuracy of the data. How to respond to these questions is difficult, and represents the general subject of this paper. In particular, this paper describes the application of statistical techniques, namely, various kinds of multivariate data analysis, to the problem of assessing the quality of a large-scale data collection system in the U. S. Navy. Results of using these techniques are described and indicate their usefulness as auditing procedures. While the discussion is placed in a particular context, the procedures should be of value for other large-scale information systems. 相似文献
272.
Salah E. Elmaghraby 《海军后勤学研究》1971,18(3):339-344
A sufficient condition for the optimality of the CBS-rule due to W. Smith is given a graphic interpretation in terms of ‘convex’ graphs. A convex graph is uniquely constructed (except for a homomorphism), and has the property that the optimum is achieved from any starting point. 相似文献
273.
274.
Steven E. Shreve 《海军后勤学研究》1981,28(1):185-190
Let f1 and f2 map [0, T] into the real numbers. A system is following either f1 or f2 and earning the associated reward ∫ f1 or ∫ f2, respectively. It is possible at any time to switch from fi to fj by paying a switching cost b > 0. We determine a switching policy which maximizes the total reward. Conditions which guarantee a planning horizon are established. 相似文献
275.
Alvin E. Roth 《海军后勤学研究》1977,24(3):517-520
An axiomatic formulation is given of a class of values for cooperative games. This class includes the Shapley value and the Banzhaf index, and is related to the multilinear extension of a game. 相似文献
276.
277.
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279.
Salah E. Elmaghraby 《海军后勤学研究》1968,15(2):205-232
The deterministic sequencing problem is reviewed from the points of view of variety, models, context, methodology, and current state of the art. The relationship between the theory of sequencing and other areas of control is illustrated with the relationship of sequencing to inventory. The “cyclical EMQ (Economical Manufacturing Quantities)” problem is discussed and new formulations are presented which promise a computationally feasible resolution of this outstanding problem. 相似文献
280.
Richard E. Barlow 《海军后勤学研究》1979,26(3):393-402
Total time on test (TTT) plots provide a useful graphical method for tentative identification of failure distribution models. Identification is based on properties of the TTT transform. New properties of the TTT transform distribution are obtained. These results are useful to the user of TTT plots. Although IFR (DFR) distributions are particularly easy to identify from TTT plots, the user must exercise caution relative to identification of IFR A (DFRA) distributions. 相似文献