碩士 / 國立交通大學 / 運輸工程與管理系 / 87 / This paper decides the optimal shipping strategy for telestore suppliers by considering non-uniform spatial distribution of demand and closer demand-supply interaction. One level transshipment, namely, the depot firstly ships goods to terminals, and then each terminal ships them to consumers, is proposed to solve the spatial variation problem of teleshopping consumer distribution. To reflect the characteristics of non-uniform demand density for teleshopping, we partition the study area into a variety of zones, according to the variation of demand density. Under the assumption that each terminal location is known, this paper first formulates logistics cost function by using analytical approach for each terminal that ships goods by specific sequence. Then, we propose an algorithm to determine the shipment area, size, and cycle by considering the demand-supply interaction and the goal for system optimum.
This paper further continues to aim at the discriminating shipping strategy for the specific terminal for its service zones. We adopt a discriminating shipping strategy by considering variations in the elasticity of consumer demand with respect to goods-delivery time and price among a variety of consumers spread over a large market area, so as to lead the suppliers to maximize their profits. This paper sets different parameters to reflect different demand characteristics of consumers. Logistics cost functions for discriminating shipping strategy are formulated by analytical approach. A nonlinear mathematical programming model is formulated by maximizing supplier profit subject to the demand-supply interaction to solve the optimal discriminating shipment cycle for each of different market segments.
Finally, A case study and sensitivity analysis are provided by S-company in Taiwan to illustrate the application of the models. The results show that sensitive factors affecting logistics costs include fixed transportation cost per dispatch, delay cost per customer stop, transportation cost in unit distance for terminal, inventory carrying rate, demand rate, Internet user ratio of consumers, demand parameters of goods-receving time, and price-ratio, etc. The average logistics cost is shown to be raised in case that the terminal must serve a zone which is with very low demand-rate and far from the terminal. The results also show that the telestore suppliers can increase their profits if they adopt the discriminating shipping strategy.
In conclusion, this paper determines the optimal shipment area, and shipment size for the terminals of teleshopping goods shipment by incorporating the considerations of non-uniform demand density, demand-supply interaction and system optimum. The paper further formulates a discriminating strategy by considering variations in the elasticity of consumer demand with respect to goods-delivery time and price to maximize suppliers'' profits. These considerations have not yet been theoretically formulated and analyzed in past literature. In practice, the results of the paper also shed light on operational and strategic issues for the shipping strategy of telestores.
| Identifer | oai:union.ndltd.org:TW/087NCTU0423003 |
| Date | January 1999 |
| Creators | Min-Ling Chiang, 蔣敏玲 |
| Contributors | Chaug-Ing Hsu, 許巧鶯 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 117 |
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