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The implementation of scrap recovery activities has been shown to improve the financial performance of many firms, and this kind of circular economy (CE) is particularly evident in industries with green manufacturing (GM). In this paper, we consider an imperfect multiple-stage production system that manufactures paired products made from mixed materials containing scrap returns, in which the scrap returns are converted from defective products. The feed rates of scrap returns for two products are different, and the product with the higher feed rate is placed in the second order of the process to avoid unlimited accumulation of scrap returns. The proposed problem is formulated as a joint economic order quantity (EOQ) and economic production quantity (EPQ) model aimed at cost minimization. The decision variables of the proposed model include the production run time of two products, order quantity of new material, and the extent of investment in converted equipment. We also prove that the optimal solution exists uniquely and provide an algorithm for the computation of the optimal solution. Finally, a numerical example involving the pulp and paper manufacturing industry is provided to illustrate the solution process, and the results of its sensitivity analysis are also presented to show some managerial implications.
Rung-Hung Su; Ming-Wei Weng; Chih-Te Yang; Hsin-Ting Li. An Imperfect Production–Inventory Model with Mixed Materials Containing Scrap Returns Based on a Circular Economy. Processes 2021, 9, 1275 .
AMA StyleRung-Hung Su, Ming-Wei Weng, Chih-Te Yang, Hsin-Ting Li. An Imperfect Production–Inventory Model with Mixed Materials Containing Scrap Returns Based on a Circular Economy. Processes. 2021; 9 (8):1275.
Chicago/Turabian StyleRung-Hung Su; Ming-Wei Weng; Chih-Te Yang; Hsin-Ting Li. 2021. "An Imperfect Production–Inventory Model with Mixed Materials Containing Scrap Returns Based on a Circular Economy." Processes 9, no. 8: 1275.
This paper investigates the effects of investment and inspection policies on an integrated production–inventory model involving defective items and upstream advance-cash-credit payment provided by the supplier. In this model, retailers offer customers a downstream credit period. Furthermore, the defective rate of the item can be improved through capital co-investment by the supplier and retailer. The objective of this study was to determine the optimal shipping quantity, order quantity, and investment alternatives for maximizing the supply chain’s joint total profit per unit time. An algorithm was developed to obtain the optimal solution for the proposed problem. Several numerical examples are used to demonstrate the proposed model and analyze the effects of parameters changes on the optimal solutions. Finally, management implications for relevant decision makers are obtained from the numerical examples.
Chih-Te Yang; Chien-Hsiu Huang; Liang-Yuh Ouyang. Integrated inventory model involving quality improvement investment and advance-cash-credit payments. RAIRO - Operations Research 2021, 55, 1401 -1422.
AMA StyleChih-Te Yang, Chien-Hsiu Huang, Liang-Yuh Ouyang. Integrated inventory model involving quality improvement investment and advance-cash-credit payments. RAIRO - Operations Research. 2021; 55 (3):1401-1422.
Chicago/Turabian StyleChih-Te Yang; Chien-Hsiu Huang; Liang-Yuh Ouyang. 2021. "Integrated inventory model involving quality improvement investment and advance-cash-credit payments." RAIRO - Operations Research 55, no. 3: 1401-1422.
An integrated multistage supply chain inventory model containing a single manufacturer and multiple retailers is proposed to consider deteriorating materials and finished products with imperfect production and inspection systems. The main purpose is to jointly determine the manufacturer’s production and delivery strategies and the retailers’ replenishment strategies to maximize the integrated total profit. First, the individual total profit functions of the manufacturer and multiple retailers are established and are integrated to form the total profit function of the supply chain system. Then, to address the model complexity, an algorithm is proposed to obtain the optimal solution. Several practical numerical examples are presented to demonstrate the solution procedure, and a sensitivity analysis is performed on the major parameters. From the numerical results, several findings that differ from those in the previous literature were observed. First, retailers with larger market scale, better cost control, and inspection capabilities guarantee higher integrated total profit. Second, increasing the deterioration rates of materials and finished products affect the order quantity of materials in various ways. Third, the manufacturer’s shipping strategy is rigid and not easily adjusted in the proposed model. The performance of the proposed model has several meaningful management implications.
Chi-Jie Lu; Ming Gu; Tian-Shyug Lee; Chih-Te Yang. Integrated multistage supply chain inventory model of multiple retailers with imperfect production and inspection systems. 2021, 1 .
AMA StyleChi-Jie Lu, Ming Gu, Tian-Shyug Lee, Chih-Te Yang. Integrated multistage supply chain inventory model of multiple retailers with imperfect production and inspection systems. . 2021; ():1.
Chicago/Turabian StyleChi-Jie Lu; Ming Gu; Tian-Shyug Lee; Chih-Te Yang. 2021. "Integrated multistage supply chain inventory model of multiple retailers with imperfect production and inspection systems." , no. : 1.
Implementation of corporate social responsibility (CSR) activities has been shown to improve the financial performance of many firms, and the effects are particularly evident in original brand manufacturers (OBMs). This paper studies the effects of two common CSR activities (social donations and green industrial development) on a two-stage assembly production system with multiple components and imperfect processes under the assumption that demand depends on selling price and CSR impact. The proposed problem is formulated as an economic production quantity (EPQ) model aimed at profit maximization, in which the decision variables include the production run time of each process, expenditures on social donations, and green industrial development. Our results prove that an optimal solution exists, and that it is unique. An algorithm for the computation of the optimal solution is also provided. The efficacy of the proposed model is demonstrated via numerical modeling of a footwear OBM in Taiwan. Sensitivity analysis revealed a number of managerial insights. For example, the results obtained under CSR operations can be compared with those obtained under non-CSR operations (under various parameters settings) to determine an opportune moment for the execution of CSR.
Rung-Hung Su; Ming-Wei Weng; Chih-Te Yang. Effects of corporate social responsibility activities in a two-stage assembly production system with multiple components and imperfect processes. European Journal of Operational Research 2020, 293, 469 -480.
AMA StyleRung-Hung Su, Ming-Wei Weng, Chih-Te Yang. Effects of corporate social responsibility activities in a two-stage assembly production system with multiple components and imperfect processes. European Journal of Operational Research. 2020; 293 (2):469-480.
Chicago/Turabian StyleRung-Hung Su; Ming-Wei Weng; Chih-Te Yang. 2020. "Effects of corporate social responsibility activities in a two-stage assembly production system with multiple components and imperfect processes." European Journal of Operational Research 293, no. 2: 469-480.
This paper investigates a multistage production–inventory model for deteriorating items, including raw materials and finished goods, based on collaborative preservation technology investment, hitherto not treated in the previous researches. The major purpose is to determine the optimal materials supply, production delivery, replenishment and investment policies for maximizing the joint total profit of the integrated system. Considering the proposed model, this paper uses mathematical programming analysis to ascertain the optimal solutions. Furthermore, several numerical examples are presented to demonstrate the solution process and verify the concavity of the proposed model. Sensitivity analyses with respect to major parameters are also performed. The numerical results shows that market demand, fixed shipping cost, production rate, manufacturer’s sales price and holding cost of finished goods may affect the optimal number of shipments. Besides, when collaborative preservation technology investment becomes an option, whether the effect of the deterioration rate of raw materials or finished goods on the shipping and ordering quantity will be reduced by preservation technology investment. Finally, the increase in the amount of raw materials used to produce a finished product implies the amount of finished goods produced by the original material quantity is reduced, so the preservation technology investment will be increased.
Chi-Chang Chang; Chi-Jie Lu; Chih-Te Yang. Multistage supply chain production–inventory model with collaborative preservation technology investment. Scientia Iranica 2020, 1 .
AMA StyleChi-Chang Chang, Chi-Jie Lu, Chih-Te Yang. Multistage supply chain production–inventory model with collaborative preservation technology investment. Scientia Iranica. 2020; ():1.
Chicago/Turabian StyleChi-Chang Chang; Chi-Jie Lu; Chih-Te Yang. 2020. "Multistage supply chain production–inventory model with collaborative preservation technology investment." Scientia Iranica , no. : 1.
This paper investigated a multistage sustainable production–inventory model for deteriorating items (i.e., raw materials and finished goods) with price-dependent demand and collaborative carbon reduction technology investment under carbon tax regulation. The model was developed by first defining the total profit of the supply chain members under carbon tax regulation and, second, considering a manufacturer (leader)–retailer (follower) Stackelberg game. The optimal equilibrium solutions that maximize the manufacturer’s and retailer’s total profits were determined through the method analysis. An algorithm complemented the model to determine the optimal equilibrium solutions, which were then treated with sensitivity analyses for the major parameters. Based on the numerical analysis, (a) carbon tax policies help reduce carbon emissions for both the manufacturer and retailer; (b) most carbon emissions from supply chain operations negatively impact the total profits of both members; (c) the retailer may increase the optimal equilibrium selling price to respond to an increase in carbon emissions from supply chain operations or carbon tax; and (d) autonomous consumption positively affects both members’ optimal equilibrium policies and total profits, whereas induced consumption does the opposite. These findings are very managerial and instructive for companies seeking profits and fulfilling environmental responsibility and governments.
Chi-Jie Lu; Tian-Shyug Lee; Ming Gu; Chih-Te Yang. A Multistage Sustainable Production–Inventory Model with Carbon Emission Reduction and Price-Dependent Demand under Stackelberg Game. Applied Sciences 2020, 10, 4878 .
AMA StyleChi-Jie Lu, Tian-Shyug Lee, Ming Gu, Chih-Te Yang. A Multistage Sustainable Production–Inventory Model with Carbon Emission Reduction and Price-Dependent Demand under Stackelberg Game. Applied Sciences. 2020; 10 (14):4878.
Chicago/Turabian StyleChi-Jie Lu; Tian-Shyug Lee; Ming Gu; Chih-Te Yang. 2020. "A Multistage Sustainable Production–Inventory Model with Carbon Emission Reduction and Price-Dependent Demand under Stackelberg Game." Applied Sciences 10, no. 14: 4878.
Greenhouse gases (mainly carbon dioxide) is one of the important factors contributing to extreme weather we face today. The carbon cap-and trade and carbon offset are common but important carbon emission reduction policies in many countries. Further, carbon emissions generated by corporate activities can be effectively reduced through specific capital investment in green technology. However, such kind of capital investment is rather costly and is unlikely for a single company to solely invest in it. Moreover, most decision-making situations in business are correlated instead of independent. Therefore, this paper explores potential competitive and cooperative issues of the sustainable product-inventory models with collaborative investment in carbon emission reduction technology under carbon cap-and trade and carbon offset polies. A Stackelberg approach of game theory is utilized for determining the optimal equilibrium solution between the buyer and the vendor under different carbon emission reductions. Realistic data examples are used to demonstrate the solution and sensitivity analysis on the main variables. The results indicate that proportions of investment by the vendor and buyer in carbon emission reduction technology play a critical role in both parties’ shipping, ordering strategies and profits. This role becomes more prominent as the proportion of investment increases. In addition, an increased proportion of investment in carbon emission reduction technology involves increased investment and thus contributes to the fulfillment of the carbon reduction goal. Finally, a comparison between the carbon cap-and-trade and carbon offset policies reveals that, although increases in the carbon trading price and carbon offset price are both conducive to carbon emissions inhibition, they exert different effects on the total profits of the vendor and buyer.
Chi-Jie Lu; Chih-Te Yang; Hsiu-Feng Yen. Stackelberg game approach for sustainable production-inventory model with collaborative investment in technology for reducing carbon emissions. Journal of Cleaner Production 2020, 270, 121963 .
AMA StyleChi-Jie Lu, Chih-Te Yang, Hsiu-Feng Yen. Stackelberg game approach for sustainable production-inventory model with collaborative investment in technology for reducing carbon emissions. Journal of Cleaner Production. 2020; 270 ():121963.
Chicago/Turabian StyleChi-Jie Lu; Chih-Te Yang; Hsiu-Feng Yen. 2020. "Stackelberg game approach for sustainable production-inventory model with collaborative investment in technology for reducing carbon emissions." Journal of Cleaner Production 270, no. : 121963.
The increase in carbon emissions is considered one of the major causes of global warming and climate change. To reduce the potential environmental and economic threat from such greenhouse gas emissions, governments must formulate policies related to carbon emissions. Most economists favor the carbon tax as an approach to reduce greenhouse gas emissions. This market-based approach is expected to inevitably affect enterprises’ operating activities such as production, inventory, and equipment investment. Therefore, in this study, we investigate a production inventory model for deteriorating items under a carbon tax policy and collaborative preservation technology investment from the perspective of supply chain integration. Our main purpose is to determine the optimal production, delivery, ordering, and investment policies for the buyer and vendor that maximize the joint total profit per unit time in consideration of the carbon tax policy. We present several numerical examples to demonstrate the solution procedures, and we conduct sensitivity analyses of the optimal solutions with respect to major parameters for identifying several managerial implications that provide a useful decision tool for the relevant managers. We hope that the study results assist government organizations in selecting a more appropriate carbon emissions policy for the carbon reduction trend.
Yujan Shen; Chihte Yang. A Production Inventory Model for Deteriorating Items with Collaborative Preservation Technology Investment Under Carbon Tax. Sustainability 2019, 11, 5027 .
AMA StyleYujan Shen, Chihte Yang. A Production Inventory Model for Deteriorating Items with Collaborative Preservation Technology Investment Under Carbon Tax. Sustainability. 2019; 11 (18):5027.
Chicago/Turabian StyleYujan Shen; Chihte Yang. 2019. "A Production Inventory Model for Deteriorating Items with Collaborative Preservation Technology Investment Under Carbon Tax." Sustainability 11, no. 18: 5027.
This paper proposes single-supplier single-retailer production and inventory models for maximizing the supplier and retailer’s profits in non-cooperative and cooperative environments. The effect of defective items and inspection errors are considered in the proposed models. In addition, we consider that the supplier offers the retailer a quantity threshold to absorb transportation costs for promoting the economies of scale of transport. Mathematical analyses are conducted, and optimal equilibrium production and replenishment strategies for the supplier and retailer are derived under non-cooperative and cooperative situations. Subsequently, we establish two algorithms to explain the optimal equilibrium solutions for these cases. Finally, several numerical examples and a sensitivity analysis with respect to major parameters are presented to demonstrate the theoretical results, compare the distinct solutions, and derive managerial insights.
Chih-Te Yang; Chia-Huei Ho; Hsiu-Mei Lee; Liang-Yuh Ouyang. Supplier-retailer production and inventory models with defective items and inspection errors in non-cooperative and cooperative environments. RAIRO - Operations Research 2018, 52, 453 -471.
AMA StyleChih-Te Yang, Chia-Huei Ho, Hsiu-Mei Lee, Liang-Yuh Ouyang. Supplier-retailer production and inventory models with defective items and inspection errors in non-cooperative and cooperative environments. RAIRO - Operations Research. 2018; 52 (2):453-471.
Chicago/Turabian StyleChih-Te Yang; Chia-Huei Ho; Hsiu-Mei Lee; Liang-Yuh Ouyang. 2018. "Supplier-retailer production and inventory models with defective items and inspection errors in non-cooperative and cooperative environments." RAIRO - Operations Research 52, no. 2: 453-471.
In this paper, we propose a system of joint dynamic pricing and preservation technology investment decisions for deterioration items in an integrated supply chain management environment involving a manufacturer and a retailer, a controllable deterioration rate, and price-dependent demand. Because the purchasing decisions of consumers usually involve psychologically encoded prices based upon past shopping experiences, the effects of initial reference prices are also incorporated into the proposed model. An optimal dynamic pricing and preservation technology investment model is then established to determine joint strategy, maximizing the discounted total profit over an infinite time horizon from the perspectives of the retailer and integrated supply chain. We also characterize the properties of the optimal pricing and preservation technology investment decisions, and conduct numerical studies to investigate the impact of initial reference price and various system parameters on the optimal strategies and discounted total profit for the retailer/integrated supply chain. Finally, we offer concluding remarks and suggestions for future studies.
Chung-Yuan Dye; Chih-Te Yang; Chi-Chuan Wu. Joint dynamic pricing and preservation technology investment for an integrated supply chain with reference price effects. Journal of the Operational Research Society 2018, 69, 811 -824.
AMA StyleChung-Yuan Dye, Chih-Te Yang, Chi-Chuan Wu. Joint dynamic pricing and preservation technology investment for an integrated supply chain with reference price effects. Journal of the Operational Research Society. 2018; 69 (6):811-824.
Chicago/Turabian StyleChung-Yuan Dye; Chih-Te Yang; Chi-Chuan Wu. 2018. "Joint dynamic pricing and preservation technology investment for an integrated supply chain with reference price effects." Journal of the Operational Research Society 69, no. 6: 811-824.
This study investigated a production-inventory model with defective items under a two-part trade credit where the agreement of conditionally freight concession is considered in the integration supply chain. We assume the inspection process is conducted by the retailer before selling incoming items. All the defective items are discovered, stored and then sold as a single batch to a secondary market at a decreased price. Furthermore, shortages are allowed and completely backlogged for the retailer. The purpose of this study is to determine the optimal number of shipments per production cycle for the supplier, and the optimal length of time wherein there is no inventory shortage and replenishment cycle for the retailer such that the total profit function has a maximum value. In theoretical analysis, the existence and uniqueness of the optimal solutions are shown and an algorithm is developed to find the optimal solutions. Furthermore, numerical examples are presented to demonstrate the solution procedures and a sensitivity analysis of the optimal solutions regarding all parameters are also carried out.
Chih-Te Yang; Chien-Hsiu Huang; Liang-Yuh Ouyang. Optimal Production and Ordering Strategies with Defective Items and Allowable Shortage under Two-part Trade Credit. Scientia Iranica 2018, 1 .
AMA StyleChih-Te Yang, Chien-Hsiu Huang, Liang-Yuh Ouyang. Optimal Production and Ordering Strategies with Defective Items and Allowable Shortage under Two-part Trade Credit. Scientia Iranica. 2018; ():1.
Chicago/Turabian StyleChih-Te Yang; Chien-Hsiu Huang; Liang-Yuh Ouyang. 2018. "Optimal Production and Ordering Strategies with Defective Items and Allowable Shortage under Two-part Trade Credit." Scientia Iranica , no. : 1.
Chung-Yuan Dye; Chih-Te Yang. A note on “Coordinating a supply chain for deteriorating items with a revenue sharing and cooperative investment contract”. Omega 2016, 62, 115 -122.
AMA StyleChung-Yuan Dye, Chih-Te Yang. A note on “Coordinating a supply chain for deteriorating items with a revenue sharing and cooperative investment contract”. Omega. 2016; 62 ():115-122.
Chicago/Turabian StyleChung-Yuan Dye; Chih-Te Yang. 2016. "A note on “Coordinating a supply chain for deteriorating items with a revenue sharing and cooperative investment contract”." Omega 62, no. : 115-122.
Chung-Yuan Dye; Chih-Te Yang. Optimal dynamic pricing and preservation technology investment for deteriorating products with reference price effects. Omega 2016, 62, 52 -67.
AMA StyleChung-Yuan Dye, Chih-Te Yang. Optimal dynamic pricing and preservation technology investment for deteriorating products with reference price effects. Omega. 2016; 62 ():52-67.
Chicago/Turabian StyleChung-Yuan Dye; Chih-Te Yang. 2016. "Optimal dynamic pricing and preservation technology investment for deteriorating products with reference price effects." Omega 62, no. : 52-67.
This study establishes the competitive production-inventory models with vendor’s imperfect production processes by using game theory. The imperfect production processes can be improved by capital investment which is shared out between the vendor and the buyer jointly. In addition, the inspection process is assumed to be imperfect and Type I and Type II inspection errors occur during product quality inspection. We first develop the total cost per unit time of the buyer and vendor, respectively and then seek the optimal buyer’s order quantity, vendor’s shipping times and defective rate of the product where the system achieves a Nash equilibrium. The necessary and sufficient conditions of the existence and uniqueness of the optimal solutions for the buyer and the vendor respectively are shown. Furthermore, we develop a algorithm to find the optimal solutions. Finally, an numerical example are presented to demonstrate the solution procedure.
Liang Yuh Ouyang; Chih Te Yang; Adam Kao; Jing Zhi Huang. Applying Game Theory to Competitive Production-Inventory Models with Vendor's Imperfect Production Processes and the Condition of Buyer's Exemption from Inspection. Advanced Materials Research 2015, 1125, 601 -607.
AMA StyleLiang Yuh Ouyang, Chih Te Yang, Adam Kao, Jing Zhi Huang. Applying Game Theory to Competitive Production-Inventory Models with Vendor's Imperfect Production Processes and the Condition of Buyer's Exemption from Inspection. Advanced Materials Research. 2015; 1125 ():601-607.
Chicago/Turabian StyleLiang Yuh Ouyang; Chih Te Yang; Adam Kao; Jing Zhi Huang. 2015. "Applying Game Theory to Competitive Production-Inventory Models with Vendor's Imperfect Production Processes and the Condition of Buyer's Exemption from Inspection." Advanced Materials Research 1125, no. : 601-607.
We address the joint problem of trade credit and preservation technology investment.We determine an optimal trade credit strategy from a seller's perspective.We consider that trade credit increases not only demand rate but also default risk.We formulate the problem as a dynamic programming problem.We investigate the change of replenishment strategy from the sensitivity analysis. In this paper, we examine an optimal dynamic decision-making problem for a retailer selling a single deteriorating product, the demand rate of which varies simultaneously with time and the length of credit period that is offered to the customers. The deterioration rate is time dependent and can be reduced by an investment in preservation technology. In addition, the risk of default increases with the credit period length. A generalized model is presented to determine the optimal trade credit, preservation technology investment and replenishment strategies that maximize the retailer's total profit after the default risk occurs over a finite planning horizon. Under certain conditions, we first establish a single period deteriorating inventory model, and then provide a comparative statics analysis that characterizes the impacts of key parameters on the retailer's optimal trade credit and preservation technology investment decisions by using the properties of the supermodular function. Dynamic programming is then used to solve the proposed model by employing the obtained theoretical results. At the end of this paper, some numerical examples and the results of a sensitivity analysis are used to illustrate the features of the proposed model; we then offer our concluding remarks.
Chih-Te Yang; Chung-Yuan Dye; Ji-Feng Ding. Optimal dynamic trade credit and preservation technology allocation for a deteriorating inventory model. Computers & Industrial Engineering 2015, 87, 356 -369.
AMA StyleChih-Te Yang, Chung-Yuan Dye, Ji-Feng Ding. Optimal dynamic trade credit and preservation technology allocation for a deteriorating inventory model. Computers & Industrial Engineering. 2015; 87 ():356-369.
Chicago/Turabian StyleChih-Te Yang; Chung-Yuan Dye; Ji-Feng Ding. 2015. "Optimal dynamic trade credit and preservation technology allocation for a deteriorating inventory model." Computers & Industrial Engineering 87, no. : 356-369.
Chung-Yuan Dye; Chih-Te Yang. Sustainable trade credit and replenishment decisions with credit-linked demand under carbon emission constraints. European Journal of Operational Research 2015, 244, 187 -200.
AMA StyleChung-Yuan Dye, Chih-Te Yang. Sustainable trade credit and replenishment decisions with credit-linked demand under carbon emission constraints. European Journal of Operational Research. 2015; 244 (1):187-200.
Chicago/Turabian StyleChung-Yuan Dye; Chih-Te Yang. 2015. "Sustainable trade credit and replenishment decisions with credit-linked demand under carbon emission constraints." European Journal of Operational Research 244, no. 1: 187-200.
We establish an integrated inventory model with two warehouses and order-size dependent trade credit.Mathematical analysis is used to find the optimal production and replenishment policies.Sensitivity analysis is conducted to examine the effects of the main parameters on the solution. Trade credit has many forms in today's business practice. The most common form of trade credit policy that is used to encourage retailers to buy larger quantities is order-size dependent. When the number of ordered units exceeds the capacity of the own warehouse, an additional rented warehouse is required to store the excess units. Therefore, to incorporate the concept of order-size dependent trade credit and limited storage capacity, we proposed an integrated inventory model with capacity constraint and a permissible delay payment period that is order-size dependent. In addition, the unit production cost, which is a function of the production rate, is considered. Three theorems and an algorithm are developed to determine the optimal production and replenishment policies for both the supplier and the retailer. Finally, numerical examples are presented to illustrate the solution procedure and the sensitivity analyses of some key parameters are provided to demonstrate the proposed model.
Liang-Yuh Ouyang; Chia-Huei Ho; Chia-Hsien Su; Chih-Te Yang. An integrated inventory model with capacity constraint and order-size dependent trade credit. Computers & Industrial Engineering 2015, 84, 133 -143.
AMA StyleLiang-Yuh Ouyang, Chia-Huei Ho, Chia-Hsien Su, Chih-Te Yang. An integrated inventory model with capacity constraint and order-size dependent trade credit. Computers & Industrial Engineering. 2015; 84 ():133-143.
Chicago/Turabian StyleLiang-Yuh Ouyang; Chia-Huei Ho; Chia-Hsien Su; Chih-Te Yang. 2015. "An integrated inventory model with capacity constraint and order-size dependent trade credit." Computers & Industrial Engineering 84, no. : 133-143.
Chung-Yuan Dye; Chih-Te Yang; Fang-Cheng Kung. A note on “Seller’s optimal credit period and cycle time in a supply chain for deteriorating items with maximum lifetime”. European Journal of Operational Research 2014, 239, 868 -871.
AMA StyleChung-Yuan Dye, Chih-Te Yang, Fang-Cheng Kung. A note on “Seller’s optimal credit period and cycle time in a supply chain for deteriorating items with maximum lifetime”. European Journal of Operational Research. 2014; 239 (3):868-871.
Chicago/Turabian StyleChung-Yuan Dye; Chih-Te Yang; Fang-Cheng Kung. 2014. "A note on “Seller’s optimal credit period and cycle time in a supply chain for deteriorating items with maximum lifetime”." European Journal of Operational Research 239, no. 3: 868-871.
When a supplier announces an impending price increase due to take effect at a certain time in the future, it is important for each retailer to decide whether to purchase additional stock to take advantage of the present lower price. This study explores the possible effects of price increases on a retailer's replenishment policy when the special order quantity is limited and the rate of deterioration of the goods is assumed to be constant. The two situations discussed in this study are as follows: (1) when the special order time coincides with the retailer's replenishment time and (2) when the special order time occurs during the retailer's sales period. By analysing the total cost savings between special and regular orders during the depletion time of the special order quantity, the optimal order policy for each situation can be determined. We provide several numerical examples to illustrate the theories in practice. Additionally, we conduct a sensitivity analysis on the optimal solution with respect to the main parameters.
Liang-Yuh Ouyang; Kun-Shan Wu; Chih-Te Yang; Hsiu-Feng Yen. Optimal order policy in response to announced price increase for deteriorating items with limited special order quantity. International Journal of Systems Science 2014, 47, 1 -12.
AMA StyleLiang-Yuh Ouyang, Kun-Shan Wu, Chih-Te Yang, Hsiu-Feng Yen. Optimal order policy in response to announced price increase for deteriorating items with limited special order quantity. International Journal of Systems Science. 2014; 47 (3):1-12.
Chicago/Turabian StyleLiang-Yuh Ouyang; Kun-Shan Wu; Chih-Te Yang; Hsiu-Feng Yen. 2014. "Optimal order policy in response to announced price increase for deteriorating items with limited special order quantity." International Journal of Systems Science 47, no. 3: 1-12.
This paper extends the previous economic order quantity (EOQ) models under two-level trade credit such as Goyal (1985), Teng (2002), Huang (2003, 2007), Kreng and Tan (2010), Ouyang et al. (2013), and Teng et al. (2007) to reflect the real-life situations by incorporating the following concepts: (1) the storage capacity is limited, (2) the supplier offers the retailer a partially upstream trade credit linked to order quantity, and (3) both the dispensable assumptions that the upstream trade credit is longer than the downstream trade creditN
Chih-Te Yang; Liang-Yuh Ouyang; Chang-Hsien Hsu; Kuo-Liang Lee. Optimal Replenishment Decisions under Two-Level Trade Credit with Partial Upstream Trade Credit Linked to Order Quantity and Limited Storage Capacity. Mathematical Problems in Engineering 2014, 2014, 1 -14.
AMA StyleChih-Te Yang, Liang-Yuh Ouyang, Chang-Hsien Hsu, Kuo-Liang Lee. Optimal Replenishment Decisions under Two-Level Trade Credit with Partial Upstream Trade Credit Linked to Order Quantity and Limited Storage Capacity. Mathematical Problems in Engineering. 2014; 2014 ():1-14.
Chicago/Turabian StyleChih-Te Yang; Liang-Yuh Ouyang; Chang-Hsien Hsu; Kuo-Liang Lee. 2014. "Optimal Replenishment Decisions under Two-Level Trade Credit with Partial Upstream Trade Credit Linked to Order Quantity and Limited Storage Capacity." Mathematical Problems in Engineering 2014, no. : 1-14.