DEVELOPING ECONOMIC PRODUCTION QUANTITY MODELS FOR ITEMS THAT EXHIBIT DELAY IN DETERIORATION WITH RELIABILITY CONSIDERATION
DEVELOPING ECONOMIC PRODUCTION QUANTITY MODELS FOR ITEMS THAT EXHIBIT DELAY IN DETERIORATION WITH RELIABILITY CONSIDERATION
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Date
2014-08
Authors
SANI, DARI
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Abstract
This thesis studies some Economic Production Quantity (EPQ) models of deteriorating items that
exhibit delay in deterioration with reliability consideration. Two modifications to existing
models are presented; the first modification assumes a constant demand both before and after
deterioration begins, while the second modification assumes a linearly time dependent demand
after deterioration begins. The unit cost of production of an item is assumed to be directly related
to the process reliability and inversely related to the demand rates. Numerical examples are given
to illustrate the applications of the models.
Description
A THESIS SUBMITTED TO THE SCHOOL POSTGRADUATE STUDIES,
AHMADU BELLO UNIVERSITY, ZARIA, NIGERIA
IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD OF DEGREE
OF A MASTER OF SCIENCE IN MATHEMATICS
DEPARTMENT OF MATHEMATICS
AHMADU BELLO UNIVERSITY, ZARIA, NIGERIA
AUGUST, 2014
Keywords
ECONOMIC PRODUCTION, QUANTITY MODELS, DELAY, DETERIORATION, RELIABILITY