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		 Journal of System and Management Sciences --- Vol.3, No. 2 
		 
		
		A Study of Eco-performance of Logistics Services in Food Supply Chains 
		Dong 
		Li ,Zurina Hanafi......................................................................................................................................1 
		
		Optimal Selling Strategy in Dual-Channel Supply Chains 
		
		Yong He, Houfei Song, Peng Zhang..................................................................................................................10 
		
		Lijuan Fan,Qiuli Qin.........................................................................................................................................20 
		
		Ning Ding, Hanqing Li, Hongqi Wang..............................................................................................................29 
		
		Pricing and 
		Coordination Research for TPL Based on Different Logistics Service Level 
		  
		
		
		Xuehui He, Wei Li, Kai Nie................................................................................................................................35 
		
		Research on 
		Management Strategies of Reverse Logistics in E-Commerce Environments 
		Wenming Wang,Yan Liu,Yingjie Wei..................................................................................................................45 
		
		Research on Logistics 
		Distribution Networks of Online Retailers 
		
		Wei Wang...........................................................................................................................................................51 
		
		New Error Correction 
		Scheme for Multi-Level Optical Storage System 
		
		Xiaotian Zhang,Jing Pei, Haizheng Xu.............................................................................................................60 
 
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