Research on the emergence of the hottest reverse l

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Research on the emergence of reverse logistics and its system structure (V)

4 research methods of reverse logistics system structure

4.1 qualitative analysis

the first qualitative analysis of the reverse logistics system including Taizhou enterprises is guiltinan and nwokoye[13]. Due to the limitations of social cognition at that time, most of the early literatures discussed the structural features and design principles from the perspective of cost, did not analyze them from the product life cycle, and ignored the problems of sustainable development [32]. Since then, with the enhancement of environmental protection awareness, people have a further understanding of the structure of the reverse logistics system. Many scholars have studied the structural characteristics and design principles of the reverse logistics system from the perspectives of environmental protection, green operation, performance and logistics so that the long axis of the sample coincides with the stretching direction through the fixture centerline. Now, from the overall perspective and enterprise strategy [16, 23, 26, 32], It provides correct guidance for establishing an effective reverse logistics system structure

4.2 case study

due to the complexity of the reverse logistics system network structure, there are relatively many literature on case studies of a specific product, and good results have been achieved. From 2001 to 2002, Fleischmann m and others studied the network structure of recycling reusable parts from their used products and the impact of recycling behavior on the economic benefits of enterprises to enhance their future development. The research results show that the recycling of electronic products has brought huge potential benefits to the industry. These results urge IBM to adjust its marketing plan: in North America, Europe and Asia, it recycles used products free of charge or with compensation and vigorously promotes leasing services. So far, leasing business has accounted for 35% of its hardware sales [23, 29]. At present, the product types of reverse logistics system structure research include daily necessities [9,21], durable goods [15], electronic products [22], textiles [20], industrial by-products or wastes [17], construction wastes [18,19], etc

4.3 quantitative analysis

4.3.1 simulation

due to the high uncertainty of reverse logistics in terms of time, quantity and quality, the production recovery model established includes a large number of parameters describing the dynamic changes of supply, distribution and reverse logistics. The model is often difficult to be solved by analytical method, but needs to be simulated by computer

bernd e1hirsch, Thorsten KUHLMANN, jensscchumacher, etc. discussed the application of locomotive (logistic chain multidimensional design toolboxwith environmental assessment) simulation tool in designing the recycling network structure of products with life cycle characteristics in 1998. Using locomotive simulation tool can not only determine the optimal logistics network structure, but also calculate the impact of logistics operation on the ecological environment. In addition, due to the convenience of operation, the simulation tool is gradually being used in the middle and senior management, so that managers can seek suitable logistics solutions from the level of strategic decision [30]

According to the characteristics of IBM products, Fleischmann m designed a network system structure simulation model in 2002 from the perspective of inventory control, including old machine recycling, disassembly, inspection, new parts outsourcing, defective parts repair and other nodes. The model makes three decisions: whether to use the old parts obtained from disassembly, control the inspection quantity of old parts, and adjust the outsourcing or repair quantity of new parts. Through various cost parameter settings, the simulation model is used to determine the optimal inventory of each network node, providing an evaluation basis for various production planning schemes [29]

(to be continued)

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