Ayrıntılı Bilimsel Program ve Bildiri Özetleri - YAEM2010

YAEM 2010
YÖNEYLEM ARAÞTIRMASI VE ENDÜSTRÝ MÜHENDÝSLÝGI 30. ULUSAL KONGRESÝ
Gray markets - also called “open markets” or “parallel” channels - are
markets for genuine brand products that are sold through
unauthorized retailers. They are an important phenomenon in many
markets ranging from consumer goods to industrial equipment. While
a gray market provides an opportunity to sell excess inventory, it also
is a threat to authorized retailers' demand. We consider a supply
chain with one manufacturer and several authorized retailers that face
uncertain demand and the potential of a gray market. We characterize
the equilibrium market-clearing gray market price and the profits in
the channel. We also characterize the manufacturer's wholesale
pricing problem when it is strategic and anticipates the gray market
emergence. We next examine coordination issues. Comparing a
decentralized and centralized system, we show that a wholesale
pricing contract is “almost” coordinating in a gray market
environment. We analyze several contracts that are designed naively
disregarding the potential for a gray market to emerge and ask: How
does the gray market equilibrium change under these contracts? And
from the manufacturer's standpoint, how does the performance of the
contracts compare? Our results shed light on the relative robustness
of coordinating contracts under gray markets.
Behavioral Factors Affecting Newsvendor Decisions and
Coordination
Nukte Sahin, Murat Kaya
Department of Industrial Engineering, Sabanci University, Istanbul,
The newsvendor formula determines the optimal
production/procurement quantity for short-life-cycle products that
face stochastic demand. However, human decision-makers are known
not to choose the quantity that the newsvendor model predicts in
relevant decision environments. Our goal is to determine the role of
certain behavioral factors including risk aversion and loss aversion in
real-life newsvendor decisions. To this end, we conduct decision-
making experiments with human beings. We study both stand-alone
newsvendor decisions and the decisions of supply chain members that
strategically interact through supply chain contracts.
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