Supply Chain System Considering Carbon Emissions and Imperfect Production Process
| Autor: | Yosef Daryanto, 游瑟福 |
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| Rok vydání: | 2019 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 107 Recently, the environmental effects of inventory decisions are getting more attention. Global climate change awareness and environmental protection inspire many researchers, industries, and other organizations to develop a green and low carbon supply chain. The objective is to promote environmental sustainability and social responsibility. Due to these concerns, this research investigates supply chain inventory and lot sizing models dealing with carbon emission cost under carbon tax regulation. This research studies four supply chain systems and examines its impact on total cost and carbon emission reductions. The objective of each study was to maximize total system profit or to minimize total system cost by deriving the optimal order quantity, delivery quantity and number of deliveries per cycle. The first study investigates the impact of incorporating carbon emission cost in an economic order quantity model considering an imperfect production process producing a certain percentage of defective products. Two conditions with different shortages were considered. The second study considers a two-echelon supply chain system with one manufacturer and one buyer. The model considers carbon emission, deteriorating items, and imperfect quality. The third study considers an integrated inventory model under a three-echelon supply chain that incorporates carbon emission costs. A supplier performs single delivery to the 3PL’s storage per cycle, and the 3PL performs multiple equal-sized shipments to the buyer’s warehouse at constant time intervals. The fourth study extends previous three-echelon supply chain model by taking into account imperfect quality, deteriorating items, and carbon emissions simultaneously. It also examines the effects of carbon emissions from production activities, in addition to carbon emissions from the transportation, inventory holding, and disposal of deteriorated units. Simple solution search procedures are employed to solve the developed supply chain models. Numerical examples are provided for each model to illustrate the applicability of the models. Sensitivity analyses are presented to demonstrate the effects of the parameter changes on the order quantity, number of deliveries, total cost, and total carbon emission. The results show that incorporating carbon emission cost into a supply chain inventory decision result in a total cost saving or profit increase, and an emission reduction. Some management insights are then provided in the conclusion part. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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