| Summary: | 碩士 === 國立交通大學 === 土木工程研究所 === 83 === This paper investigates the optimal density of retail
establish- ments by addressing both physical distribution and
spatial market problems. Instead of assuming inelastic demand
in most logistics literature, this paper considers demand-
supply interactions and assumes the density of establishments
is endogenous. The commod- ities are assumed to be distributed
from a depot directly or through one local terminal to many
retail establishments. In such physical distribution system,
average logistic cost per item, consumer demand for the
commodity of a retail establishment, and the interrelationship
between demand-supply are analyzed by using continuous space
modeling. To determine the optimal, equilibrium density and
number for retail establishments and local terminals, nonlinear
programming problems are formulated by two different
objectives, i.e. minimizing average logistic cost and
maximizing total supply subject to the demand and supply
equality.
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