本篇論文主要在考慮為了更接近實際情況，將傳統EOQ模型放寬。以非瞬間補充情形下，倉庫容量為有限且允許延後付款情形發生。非瞬間補充情形主要是考量所訂購的數量是無法在瞬間補充完成的，在這樣的條件下更符合實際假設。實務上允許延後付款的條件是指供應商為了利益，願意給予零售商一固定的信用交易期限，當零售商收到品項時，所需支付的貨款可以延到信用交易期限終止時才支付給供應商。零售商可以在信用交易期限內將賣出物品所得到的收入存放於銀行，以賺取利息，等到期限到之後，零售商賺取利息的情形結束，且需付出存貨資金積壓的利息成本。另一倉庫容量有限的條件是指倉庫本身並非可以存放無限的容量，所以超過自有倉庫容量的物品，則需另外租借倉庫來存放。
在模式求解上，本篇論文利用模型推導出其各項成本函數，根據不同的狀況，求出其各函數之最佳解，以得出其最小之成本解。然後進一步以數值範例來解釋本篇論文中所有推導出的情況。在本篇論文的發展模式下，將更貼進實務，使其應用範圍將更為廣泛。

Consider being relax traditional EOQ model in order to be closer to the actual conditions mainly in this paper. Under noninstantaneous receipt conditions, the capacity of the warehouse is assume be limited and permissible delay in payments. Noninstantaneous receipt is considers the quantity ordered unable to replenishment finished instantaneously. On the conditions, it is more approach the practical situation. In practice, the supplier permit delay in payments to promote profit. The supplier is willing to offer the retailer a certain credit period. When retailer received items, it can sell the goods and accumulate revenue and earn interest before the end of the trade credit period. A higher interest is charged if the payment is not settled by the end of the trade credit period. This paper also considers the conditions of limited storage capacity. It means the storage capacity is not unlimited. Excess stock is held in a rented warehouse whenever the storage capacity of the company warehouse is insufficient.
In the aspect of solving, this paper use the every cost function that obtained from different case, we get the optimum solving with every cost function. Then we get the solving with least cost. Furthermore, numerical examples illustrate all results obtained by this paper. Because the inventory model that obtained from this paper, it more approach the practical situation and make the range of discussion more extensively.

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