Operations Research : Applications and Algorithms
Operations Research : Applications and Algorithms
4th Edition
ISBN: 9780534380588
Author: Wayne L. Winston
Publisher: Brooks Cole
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The projected number of defects submitted, resolved, and remaining open inthe first four weeks of a test project are given in the upper half of Table 13.18.The actual numbers of submitted and resolved defects are shown in the lowerhalf of the table. Calculate the actual number of open defects?
A company specializing in custom-engineered equipment is planning to submit a proposal to the National 5. Aeronautics and Space Administration (NASA) to build an assembled component for a new space station that NASA plans to launch into orbit. The winning proposal will be selected on the basis of both cost and timely delivery. Also, there will be a penalty clause in the NASA contract for late delivery. The company has developed the schedule of activities that are required to produce the assembled component. The activities and precedence requirements are presented in the table below. Three time estimates (in weeks) are given for each activity: optimistic time, most likely time, and pessimistic time. (a) What completion time should the company specify in its proposal in order to be 85% sure that it will complete the project on time? ij Activity Immediate predecessor Optimistic time (weeks) a b d. h b e, d d e,f f,g h, i a a a 15 8 10 20 17 4 10 Most likely time (weeks) 24 16 10 14 26 23…
Question 31 A survey on pollution has been conducted on four cities. The degree of pollution is classified as not polluted, moderately polluted, and heavily polluted. The results of the survey are illustrated in the table below: City city1 city2 city3 city4 Xi1: not polluted 0.3 0.2 0.1 0.7 X12: moderately polluted 0.4 0.2 0.2 0.4 Xi3: heavily polluted 0.3 0.6 0.5 0.1 Use the cosine amplitude method to develop the fuzzy relation R that relates the pollution degree to the city.

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Operations Research : Applications and Algorithms

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