Process Management Principles for Increasing the Energy Efficiency

Upstream assembly and downstream test were assumed to

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Unformatted text preview: pstream (assembly) and downstream (test) were assumed to have excess capacity for purposes of this analysis. Future customer demand was determined using upcoming contractual delivery dates. Based on contracts due in the next 319 days, it was determined that customers demand, on average, 11.7 cards per week that are tested using the MTSA. This result was roughly comparable with the operating logs for the MTSA during a recent 85 day period which showed that average throughput was 14.3 cards per week with a standard deviation of 8.9. Though the discrepancy was small, and may have been due to sampling error or variation in demand, there was some anecdotal evidence based on SME interviews that operators were overproducing to get ahead of the customer demand. Given the data, however, and a desire to be conservative, it was assumed that weekly customer demand was a random variable, D, where D ~ N(13, 9). (5.5) Capacity constraints in the system deserves a brief discussion. Based on SME input and operational records, it was clear that upstream assembly process capacity was greater than customer demand. Lik...
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This document was uploaded on 03/03/2014 for the course ADMIN 1 at Universidad Nacional de Colombia.

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