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Prof. KwangSup Shin
Incheon National University

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0 Big Data Analytics
0 Operations Management
0 Optimization Models
0 Risk Management
0 Supply Chain Management

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Journal article
Published: 01 February 2021 in Energies
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Recently, the use of electric vehicles in a power grid has been attracting attention. The success of vehicle-grid integration (VGI) requires the active participation of not only VGI service providers but also electric vehicle owners, utility companies, and the government in the VGI service. However, until now, such research has not been sufficiently discussed. Thus, we propose a framework for analyzing the economic environment in which each stakeholder can participate, especially in the application of a demand response, and derive its economic value in Korea. Also, through the proposed framework, we suggest optimal scenarios and policy directions for each participant’s successful business. Our results show that government and a utility company need to share their benefits with a VGI service provider to make VGI a success.

ACS Style

Yongma Moon; Joongseok Ahn; Wonchang Hur; Wooje Kim; KwangSup Shin. Economic Valuation of Vehicle-Grid Integration (VGI) in a Demand Response Application from Each Stakeholder’s Perspective. Energies 2021, 14, 761 .

AMA Style

Yongma Moon, Joongseok Ahn, Wonchang Hur, Wooje Kim, KwangSup Shin. Economic Valuation of Vehicle-Grid Integration (VGI) in a Demand Response Application from Each Stakeholder’s Perspective. Energies. 2021; 14 (3):761.

Chicago/Turabian Style

Yongma Moon; Joongseok Ahn; Wonchang Hur; Wooje Kim; KwangSup Shin. 2021. "Economic Valuation of Vehicle-Grid Integration (VGI) in a Demand Response Application from Each Stakeholder’s Perspective." Energies 14, no. 3: 761.

Journal article
Published: 17 June 2020 in Applied Sciences
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Previous studies have proposed various frameworks and algorithms to optimize routes to reduce total transportation cost, which accounts for over 29.4% of overall logistics costs. However, it is very hard to find cases in which mathematical models or algorithms are applied to practical business environment cases which require reusable packaging, especially daily operating logistics services like convenience store support systems. Most previous studies have considered developing an optimal algorithm which can solve the mathematical problem within a practical amount of time while satisfying all constraints, such as the capacity of delivery and pick-up, and hard or soft time windows. For daily delivery and pick-up services, like those supporting several convenience stores, it is required to consider the unit transporting the container, as well as the demand, capacity of trucks, travel distance, and traffic congestion. In particular, reusable transport containers and trays should be regarded as important assets of logistics centers. However, if the mathematical model focuses on only satisfying constraints related to delivery and not considering the cost of trays, it is often to leave the empty trays on the pick-up points when there is not enough space in the track. In this study, we propose a mathematical model for optimizing delivery and pick-up plans by extending the general vehicle routing problem of simultaneous delivery and pick-up with time windows, while considering left-over cost. With numerical experiments it has been proved that the proposed model may reduce the total delivery cost. Also, it seems possible to apply the proposed approach to the various logistics businesses which require reusable transport containers like shipping containers, refrigerating containers, trays, and pallets.

ACS Style

Intaek Gong; Kyungho Lee; Jaewon Kim; Yunhong Min; KwangSup Shin. Optimizing Vehicle Routing for Simultaneous Delivery and Pick-Up Considering Reusable Transporting Containers: Case of Convenience Stores. Applied Sciences 2020, 10, 4162 .

AMA Style

Intaek Gong, Kyungho Lee, Jaewon Kim, Yunhong Min, KwangSup Shin. Optimizing Vehicle Routing for Simultaneous Delivery and Pick-Up Considering Reusable Transporting Containers: Case of Convenience Stores. Applied Sciences. 2020; 10 (12):4162.

Chicago/Turabian Style

Intaek Gong; Kyungho Lee; Jaewon Kim; Yunhong Min; KwangSup Shin. 2020. "Optimizing Vehicle Routing for Simultaneous Delivery and Pick-Up Considering Reusable Transporting Containers: Case of Convenience Stores." Applied Sciences 10, no. 12: 4162.

Preprint
Published: 19 May 2020
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A lot of previous research have proposed various frameworks and algorithms to optimize routes to reduce the total transportation cost, which accounts for over 70% of overall logistics cost. However, it is very hard to find the cases applied the mathematical models or algorithms to the practical business environment cases, especially daily operating logistics services like convenient stores. Most of previous research have considered the developing an optimal algorithm which can solve the mathematical problem within the practical time while satisfying all constraints such as the capacity of delivery and pick-up, and time windows. For the daily pick-up and delivery service like supporting several convenient stores, it is required to consider the unit transporting container as well as the demand, capacity of trucks, traveling distance and traffic congestion. Especially, the reusable transporting container, trays, should be regarded as the important asset of logistics center. However, if the mathematical model focuses on only satisfying constraints related delivery and not considering the cost of trays, it is often to leave the empty trays on the pick-up points when there is not enough space in the track. In this research, it has been proposed to build the mathematical model for optimizing pick-up and delivery plans by extending the general vehicle routing problem of simultaneous delivery and pickup with time windows while considering left-over cost. With the numerical experiments, it has been proved that the proposed model may reduce the total delivery cost. It may be possible to apply the proposed approach to the various logistics business which uses the reusable transporting container like shipping containers, refrigerating containers, trays, and pallets.

ACS Style

Intaek Gong; Kyungho Lee; Jaewon Kim; Yunhong Min; Kwang Sup Shin. Optimizing Vehicle Routing for Simultaneous Pick-up and Delivery considering the Reusable Transporting Containers: Case of Convenient Stores. 2020, 1 .

AMA Style

Intaek Gong, Kyungho Lee, Jaewon Kim, Yunhong Min, Kwang Sup Shin. Optimizing Vehicle Routing for Simultaneous Pick-up and Delivery considering the Reusable Transporting Containers: Case of Convenient Stores. . 2020; ():1.

Chicago/Turabian Style

Intaek Gong; Kyungho Lee; Jaewon Kim; Yunhong Min; Kwang Sup Shin. 2020. "Optimizing Vehicle Routing for Simultaneous Pick-up and Delivery considering the Reusable Transporting Containers: Case of Convenient Stores." , no. : 1.

Journal article
Published: 22 November 2019 in Applied Sciences
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A cold chain for perishable fresh products aims to preserve the quality of the products under the control of a predefined temperature range. To satisfy the delivery conditions within appropriate time windows, the most critical operations in cold chain management is the transportation and distribution of fresh products. Due to rapid population growth and increasing demand for high-quality fresh foods, it becomes critical to develop advanced transportation and distribution networks for fresh products, particularly in urban areas. This research aims to design different scenarios based on mathematical models for fresh products transportation and distribution network in the Bangkok metropolitan area using Geographic Information system (GIS). The proposed methodology integrates location–allocation and vehicle routing problem analysis. The performance of all possible scenarios is evaluated and compared by considering the number of required distribution centers and trucks, total travel time, total travel distance, as well as fairness among drivers. The results of the scenario analysis highlight that the alternative scenarios show a better performance as compared to the current network. In addition, the administrator can make a different decision among several alternatives by considering different aspects, such as investment cost, operating cost, and balance of using available resources. Therefore, it may help a public officer to design the fresh products logistics network considering actual demand and traffic conditions in Bangkok.

ACS Style

Juthathip Suraraksa; Kwang Sup Shin; Shin. Urban Transportation Network Design for Fresh Fruit and Vegetables Using GIS–The Case of Bangkok. Applied Sciences 2019, 9, 5048 .

AMA Style

Juthathip Suraraksa, Kwang Sup Shin, Shin. Urban Transportation Network Design for Fresh Fruit and Vegetables Using GIS–The Case of Bangkok. Applied Sciences. 2019; 9 (23):5048.

Chicago/Turabian Style

Juthathip Suraraksa; Kwang Sup Shin; Shin. 2019. "Urban Transportation Network Design for Fresh Fruit and Vegetables Using GIS–The Case of Bangkok." Applied Sciences 9, no. 23: 5048.

Journal article
Published: 28 September 2019 in The Asian Journal of Shipping and Logistics
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As the supply chain becomes more complicated and globalized, outsourcing techniques, such as the Vendor Managed Inventory (VMI) under the Just-In-Time (JIT) conditions, are becoming widely adopted, in order to reduce inventory, lead-time and set up costs. For vendors, Third Party Logistics (TPL) is regarded as one of the best alternatives used to improve both their service level and profit. For TPL service providers, their profits must be maximized under economies of scale. However, under the JIT condition, it is very difficult to balance the order quantity whilst satisfying the predefined conditions related to inventory level. In addition, while transporting and keeping items, the exposition to various risk factors is likely. In this paper, we propose the TPL service provider to determine the optimal order quantity, considering defective items under the VMI and JIT conditions. By designing a mathematical decision-making problem based on the EPQ (Economic Production Quantity)/EOQ (Economic Order Quantity) with defective items, we can find the optimal order quantity for TPL service providers under VMI and JIT. With illustrative numerical examples, the procedure and the impacts of the expected defective rates are explained with sensitivity analysis. Copyright © 2019 The Korean Association of Shipping and Logistics, Inc. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

ACS Style

Sung Chul Kim; Kwang Sup Shin. Negotiation Model for Optimal Replenishment Planning Considering Defects under the VMI and JIT Environment. The Asian Journal of Shipping and Logistics 2019, 35, 147 -153.

AMA Style

Sung Chul Kim, Kwang Sup Shin. Negotiation Model for Optimal Replenishment Planning Considering Defects under the VMI and JIT Environment. The Asian Journal of Shipping and Logistics. 2019; 35 (3):147-153.

Chicago/Turabian Style

Sung Chul Kim; Kwang Sup Shin. 2019. "Negotiation Model for Optimal Replenishment Planning Considering Defects under the VMI and JIT Environment." The Asian Journal of Shipping and Logistics 35, no. 3: 147-153.

Journal article
Published: 10 June 2019 in Sustainability
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As supply chains become more complex and globalized, the individual participants of the supply chains should invest in systems based on information communication technologies (ICT) such as the remote frequency identification device (RFID) with tags that secure the visibility of the entire supply chain. In addition, the level of visibility, such as the container, pallet, carton, and box, should be determined for each participant to optimize its own profit function. By using a collaborative game scheme, the present study illustrates the relationships among participants who invest to a certain level of visibility, and then how much value each participant gets. To find feasible solutions, a genetic algorithm-based mechanism is devised for modeling various fitness functions considering the total profit and benefit to cost (B/C) ratio. The proposed framework considers the relationship among participants, as well as the impact from the enhanced visibility, and it may be possible to make fair and rational decisions for all participants based on the quantitative metrics such as the B/C ratio. In this paper, we propose a novel method based on the game-theoretic approach where the enhanced visibility prevents a certain participant from taking most of the benefit. It seems possible to establish a long-term sustainable supply chain visibility by distributing profit fairly to all participants in the supply chain.

ACS Style

Changhyun Kim; KwangSup Shin. Developing Fair Investment Plans to Enhance Supply Chain Visibility Using Cooperative Games. Sustainability 2019, 11, 3209 .

AMA Style

Changhyun Kim, KwangSup Shin. Developing Fair Investment Plans to Enhance Supply Chain Visibility Using Cooperative Games. Sustainability. 2019; 11 (11):3209.

Chicago/Turabian Style

Changhyun Kim; KwangSup Shin. 2019. "Developing Fair Investment Plans to Enhance Supply Chain Visibility Using Cooperative Games." Sustainability 11, no. 11: 3209.

Journal article
Published: 28 March 2019 in The Asian Journal of Shipping and Logistics
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Currently, the competition among carriers in the international freight service industry is getting fierce. In particular, the LCC (Low Cost Carriers) in Korea secured the licenses for international freight delivery service. However, due to the high costs, most shippers prefer car ferry services over air transportation, even though the service level of air transportation is considerably better. The present paper investigates how the LCCs, as compared to car ferry services, secure the competitive advantage in the international transportation service as compared to car ferry services. We have focused on the factors shippers regard as the most important for selecting transportation mode. For a reasonable comparison, we have limited the business area to the north eastern Asian countries, including Korea, China, Japan, and Russia. We have developed a questionnaire for the shippers who export their own product in these countries from Korea. Based on the results of fuzzy-AHP, it can be concluded that the factors related to the reliability and convenience are regarded as the important factors for selecting the transportation mode. Furthermore, the results of this study can be used by LCCs to develop their own strategies for competing with car ferry services.

ACS Style

Hyunjae Jung; Jaewon Kim; KwangSup Shin. Importance Analysis of Decision Making Factors for Selecting International Freight Transportation Mode. The Asian Journal of Shipping and Logistics 2019, 35, 55 -62.

AMA Style

Hyunjae Jung, Jaewon Kim, KwangSup Shin. Importance Analysis of Decision Making Factors for Selecting International Freight Transportation Mode. The Asian Journal of Shipping and Logistics. 2019; 35 (1):55-62.

Chicago/Turabian Style

Hyunjae Jung; Jaewon Kim; KwangSup Shin. 2019. "Importance Analysis of Decision Making Factors for Selecting International Freight Transportation Mode." The Asian Journal of Shipping and Logistics 35, no. 1: 55-62.

Journal article
Published: 14 February 2019 in Sustainability
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The integration of the global market makes the supply chain more complex and has great impacts on efficient supplier management strategies. The aim of this study is to present a systematic supplier management framework to integrate supplier selection and monitoring phases, which are not independent of each other. However, only a few previous studies have pointed out the differences between the two phases. The proposed methodology integrates a quantitative and qualitative approach, formulating multi-criteria decision making (MCDM) using the analytic hierarchy process (AHP) to evaluate the priorities of these criteria. This research explores the difference in the set of criteria for supplier selection and supplier monitoring. The results provide comprehensive insights into the criteria to help decision-makers, managers, and practitioners select appropriate suppliers and monitor suppliers’ performances in the automotive industry. Based on the result, it can be said that a company should integrate the supplier selection and monitoring process. Furthermore, the purchasing and manufacturing manager should continuously collaborate and synchronize the relative weights for the critical factors.

ACS Style

Juthathip Suraraksa; Kwang Sup Shin. Comparative Analysis of Factors for Supplier Selection and Monitoring: The Case of the Automotive Industry in Thailand. Sustainability 2019, 11, 981 .

AMA Style

Juthathip Suraraksa, Kwang Sup Shin. Comparative Analysis of Factors for Supplier Selection and Monitoring: The Case of the Automotive Industry in Thailand. Sustainability. 2019; 11 (4):981.

Chicago/Turabian Style

Juthathip Suraraksa; Kwang Sup Shin. 2019. "Comparative Analysis of Factors for Supplier Selection and Monitoring: The Case of the Automotive Industry in Thailand." Sustainability 11, no. 4: 981.

Journal article
Published: 28 May 2015 in Energies
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Energy Storage Systems (ESSs) have recently been highlighted because of their many benefits such as load-shifting, frequency regulation, price arbitrage, renewables, and so on. Among those benefits, we aim at evaluating their economic value in frequency regulation application. However, unlike previous literature focusing on profits obtained from participating in the ancillary service market, our approach concentrates on the cost reduction from the perspective of a utility firm that has an obligation to pay energy fees to a power exchange. More specifically, we focus on the payments between the power exchange market and the utility firm as a major source of economic benefits. The evaluation is done by cost- benefit analysis (CBA) with a dataset of the Korean market while considering operational constraint costs as well as scheduled energy payments, and a simulation algorithm for the evaluation is provided. Our results show the potential for huge profits to be made by cost reduction. We believe that this research can provide a guideline for a utility firm considering investing in ESSs for frequency regulation application as a source of cost reduction.

ACS Style

Wonchang Hur; Yongma Moon; KwangSup Shin; Wooje Kim; Suchul Nam; Kijun Park. Economic Value of Li-ion Energy Storage System in Frequency Regulation Application from Utility Firm’s Perspective in Korea. Energies 2015, 8, 5000 -5017.

AMA Style

Wonchang Hur, Yongma Moon, KwangSup Shin, Wooje Kim, Suchul Nam, Kijun Park. Economic Value of Li-ion Energy Storage System in Frequency Regulation Application from Utility Firm’s Perspective in Korea. Energies. 2015; 8 (6):5000-5017.

Chicago/Turabian Style

Wonchang Hur; Yongma Moon; KwangSup Shin; Wooje Kim; Suchul Nam; Kijun Park. 2015. "Economic Value of Li-ion Energy Storage System in Frequency Regulation Application from Utility Firm’s Perspective in Korea." Energies 8, no. 6: 5000-5017.