去年本計畫以台灣TFT-LCD 廠商為例，著重於找出產業協同供應鏈VMI 系統
TFT- LCD 廠商進行實務個案研究。
3. 利用斐氏圖建構多階層供應鏈成員間之VMI 流程模型，再由改善後VMI 流
4. VMI 重要因素操作性定義、數學符號說明與基本假設。
7. 台灣TFT-LCD 廠商實務個案研究。
In the face of the seriously economical crisis in today’s world, businesses in
each industry should save costs and make an effort to find profitable opportunities in
the situation where the global economics is in a state of deep depression. As far as
business operations are concerned, cost savings are the cost reduction and the waste
elimination. To achieve the goals of survival and growth, each industry must endeavor
to strengthen the relationships among the partners in the upper, middle, and lower
streams of the supply chain. They should closely cooperate together, propose effective
strategic and action plans, and organize a collaborative team to rapidly penetrate
markets, considerably reduce the stock level, and significantly improve their
competitive advantages through effective supply chain operations. Obviously, quick
response to customer requirements has become one of the prerequisites for business
survival. For this reason, vendor-managed inventory (VMI) that is one of the useful
tools to respond quickly has been widely used in various industries. Businesses must
place special emphases on the variations of customer orders and schedules, capacity
commitment, shortage prevention, and vendor automatically continuous
replenishment when operating a VMI system. Consequently, the whole supply chain
of the industry can lower inventory level, reduce the impact of the bullwhip effect,
decrease logistics cost, and increase the service level of product or material supply.
In the last year, this project focused on studying the case of three TFT-LCD
companies in Taiwan from the viewpoint of industrial collaboration and explored
important factors that significantly affect the performance of VMI systems. The
results can be used as a preliminary basis to construct an integrated VMI system in
this year. The VMI system (e.g., a three-level supply chain) includes a core TFT-LCD
company (i.e., AU Optronics Corporation (AUO)) and its up-stream vendors.
In this year, this project will first define the notation of operational variables
and make the basic assumptions. Then, an integrated VMI model will be formulated
for the industrial supply chain according to the last year’s research results (i.e., VMI
performance influential factors and crucial problems) and it will be solved by an
optimization package (e.g., LINGO) for the small-scale problems since it has been
proven to be NP-hard. For the reason of difficultly obtaining an optimal solution, an
effective heuristic method will be developed and genetic algorithms including
modified and hybrid search methods will be used to solve the large-scale problems. In
addition, an experiment and a computational efficiency analysis will be also
conducted. Finally, the proposed mathematical programming model and methods will
be applied to a well-known Taiwanese TFT-LCD company and its up-stream vendors
in order to verify the aptness of these approaches.
This study can be divided into the following seven parts:
1. Set the research purpose and describe the problem.
2. Review the related literature.
3. Use Petri-Net approach to construct and improve a multi-level supply chain VMI
flow model and to find out important factors that have a significant influence on
the performance of the VMI system.
4. Define the notation of operational variables and make the basic assumptions.
5. Formulate a mathematical programming VMI model, develop an effective heuristic
method, and use genetic algorithms to solve the problem.
6. Conduct an experiment and a computational efficiency analysis for the proposed
model and methods.
7. Apply the proposed model and methods to a well-known Taiwanese TFT-LCD
company (i.e., AUO) and its up-stream vendors to demonstrate the aptness of these