中文摘要：

以单个制造商和单个零售商组成的两阶段供应链为背景，研究了零售商建立在线渠道（简称零售商双渠道）和制造商建立在线渠道（简称制造商双渠道）两种渠道模型的区别和适用条件，以及双渠道供应链的协调机制。研究结果表明：①零售商双渠道适用于传统渠道与在线渠道的竞争力差距较小的情形，而制造商双渠道适用于传统渠道竞争力较强的情形；②数量折扣契约能够协调零售商双渠道。

英文摘要：

Consider a two-stage supply chain consisted of single manufacturer and single retailer, we study the difference between the two kinds of channel models, namely, retailer＇s online channel （referred as retailer＇s dual-channels） and manufacturer＇s online channel （referred as manufacturer＇s dual-channels）, and their suitability conditions and coordination of the dual-channel supply chain. The result shows that 1） Retailer＇s dual-channels are suitable for the case where the competitive gap between traditional retailing channel and online channel is small, while manufacturer＇s dual-channels are suitable for the case where the traditional retailing channel is more competitive; 2） quantity discount contract can coordinate the retailer＇s dual-channels.