本研究的目的在信用交易情況下建立二階段退化性商品具有剩餘價值且部分欠撥的條件下之存貨模式。需求率分別以需求為固定常數、線性函數及指數遞減函數的情形下探討。並假設在補貨開始商品並不會有損耗的情況，而在某時段開始商品呈現固定的損耗率。在某時間點前損耗的商品具有剩餘價值，可繼續販售商品取得利潤，而時間點後的商品無法販售且須付出額外的處理成本。另外，很多商品（例如流行性商品或民生必需品）在缺貨發生時，等候補貨時間的長短往往是接受欠撥意願的主要關鍵。因此，本文考慮此部分欠撥情形以符合實際交易行為。 文中對所建構的數理存貨模式利用傳統的最佳化原理找出最適的訂購策略，以使存貨相關總成本為最少。最後，舉例說明模式的求解過程並對各參數做敏感性分析。 This research stock way under the terms of setting up two stage degradating goods and is worth remaining and owe and set aside partly under the trade situation of credit of purpose. The demand rate regards demand as the situation of fixed constant, linear function and decreasing function of index and puts the discussion separately. Suppose and mend the goods that beginning the goods will have no situation lossed, but begin the goods to present the fixed proportion of goods damaged in some period. The goods lossed before some time point are worth remaining, can continue selling the goods and deriving a profit, the goods after the time point are unable to sell and must pay the extra treatment cost. In addition, a lot of goods (such as the epidemic goods or people's livelihood necessities) In in short supply happen, wait for, mend goods size of time accept, owe main key to dial the will often. So, this text considers this part owes and sets aside the situation in order to the trading activity of corresponding to reality. Utilize the traditional optimization principle to find out the optimum order tactics to the stocks ways of mathematics and physics constructed built in the article, in order to enable the relevant total cost of stocks the fewest. Finally, illustrate asking the course of solving and making sensitiveness analysis to every parameter of the way with examples.
