| Summary: | 博士 === 淡江大學 === 管理科學研究所 === 83 === When a customer fails to find the desired products, the
shopkeeper will tell him to wait for a certain period of time
before the products become available. Some customers might be
willing to wait or to delay his demand for the products if
the shortage does not last long. Other customers, under the
same circumstance, might turn to another store owing to
waiting. The degree of customer''s tolerance for such a delay
is closely related to the length of the waiting period. In
general, the ratio of the demand of customers volunteering
wait during shortage out of the total demand will increase in
pace with the reduction of the waiting time. As the customer''s
purchase desire affected by the waiting time, the shopkeeper
will decide the optimal temporary cycle and the volume of
purchase in each cycle so as to attain the maximum desired
profits during the period from per unit time, which are
the key-points that we try to probe into in this thesis. To
make the study more concrete and its result more applicable
to a wider range of occasions, we take account of three
orientations: (1) Commodity attributes: Commodities of complete
pre-purchase or non-complete pre-purchase in attributes. (2)
Objective attributes:Among the maximum short-term
profitability, or maximum long-term profitability, which is
most preferable. (3) Inventory strategies selected by the
supplier: The strategy of complete shortage, the strategy of
zero shortage or the strategy of partial shortage. As far as
product preparatory strategies are concerned, we take
account of the optimal interpretation of complete shortage
strategy, zero shortage strategy or partial shortage strategy.
Futhermore we may compare the optimal interpretations for the
gross profit of the three strategies and their merits and
dismerits by judging the total profitability. Such results will
be the evaluative basis for the suppliers'' optimal policy of
purchase.
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