• Journal of Korean Society of Industrial and Systems Engineering
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• v.24 no.65
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• pp.81-88
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• 2001

In logistics decision making, Key elements in the design of any physical distribution are the location of depots and the distribution of goods from the depots to the customers. Considering open and close the depots, This paper presents a flexible analysis on the combined location-routing problem(LRP) the case for variation capacity of vehicle and customers demands each. The scenario examples are given the use of heuristic(Saving-Drop) in LRP types. The results is useful in apply to the logistics environment changes.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.38 no.2
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• pp.82-90
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• 2015

Location selection of distribution centers is a crucial task for logistics operators and key decision makers of an organization. This is a multi-criteria decision making (MCDM) process which includes both quantitative and qualitative criteria. In order to propose an optimized location selection model, this research suggests a hierarchical group of evaluation criteria : 5 major criteria with 15 sub-criteria. The MCDM approach presented in this research, by integrating Grey Relational Analysis (GRA) with Analytic Hierarchy Process (AHP), tends to rectify the overall quality and uncertainty of the values of evaluation criteria. An example of a location selection case in Korea is illustrated in this study to show the effectiveness of this method.

• Industrial Engineering and Management Systems
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• v.7 no.1
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• pp.78-89
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• 2008

The need for holistic modeling efforts for returns that capture the extended closed loop supply chain (CLSC) system at strategic as well as operational level has been clearly recognized by the industry and academia. Strategic decision-makers need comprehensive models that can guide them in efficient decision-making to increase the profitability of the entire forward and return chain. Therefore, determination of a near optimal design configuration, which includes the environmental, economical and technological capability factors, is important in strategic decision-making effort that affect the profitability of the closed loop supply chain. In this paper, we adopted an improved system dynamics methodology to tackle strategic issues that affect various performance measures, like market, time/cost, environment etc., for closed loop supply chains. After studying real life implementation issues in CLSC design, we presented guidelines for the PBM (Participative Business Modeling) methodology and presented its extension for the strategic dynamic system modeling of return chains. Finally, we demonstrated the measurement of operational performance by extending SD (system dynamic) application to closed loop supply chain management.

• The Journal of the Korea Contents Association
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• v.6 no.7
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• pp.22-30
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• 2006

The goal of the company and profit maximization can be achieved by creating revenue or reducing costs. What can be done by the effort of the firm itself is possible through cost-reduction rather than through revenue-creation. Under this economic situation, one of the best way for cost-reduction is to reduce cost of logistics. But logistics costs of a firm is continually increased because of the various customer-satisfaction, competition. This study considers that logistics cost management system be able to apply business practice through to used only a merit of CVP(Cost - Volume Profit) analysis method for effective decision making. To conclude, this study depicts that logistics cost management according to used a merit of CVP analysis method can provide information useful for making strategy of logistics. In short, It is reduce to more costs of logistics investment than are necessary. and, I will expect a man who charge logistics to improvement, adaptation, and application.

• Journal of the Korea Society for Simulation
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• v.32 no.3
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• pp.9-21
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• 2023

The recent conflict between Russia and Ukraine underscores the significant of military logistics support in modern warfare. Military logistics support is intricate and specialized, and traditionally centered on the mission-level operational analysis and functional models. Nevertheless, there is currently increasing demand for military logistics support even at the engagement level, especially for resupply using unmanned transport assets. In response to the demand, this study proposes a task model of the military logistics support for engagement-level analysis that relies on the logic of ammunition resupply below the battalion level. The model employs a decisions tree to establish the priority of resupply based on variables such as the enemy's level of threat and the remaining ammunition of the supported unit. The model's feasibility is demonstrated through a combat simulation using OneSAF.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2018.11a
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• pp.155-157
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• 2018

Over the last two decades, Vietnam's record on economic growth was remarkable, with a lot of potential to develop, Vietnam's GDP per capita growth has been among the best in the world. City logistics play a crucial role in Vietnam's economy, the more effective these services are the more competitive of the industry and trade of each country is. However, the logistics system in Vietnam is spontaneous and lacking professionalism. This paper aims to analyze Vietnam's economy overview and evaluate the development of logistics in three big cities of Northern Vietnam by using a set of criteria used in the TOPSIS method. .As a result of the analysis, the value of Ci* for storage and transportation is 0.91, which is the highest value in Hanoi.

• IE interfaces
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• v.16 no.1
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• pp.44-53
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• 2003

Ready-Mixed Concrete transportation business has been managed by the manual operation and intuitive decision making. This study is on the process improvement on ordering process, and allocation/transportation of trucks commuting between the batching plant and construction sites. Processes of order collection, job dispatch and allocation, and on-time-delivery are analysed and improved. The logistics control system, with GPS system, was developed and implemented based on the reconstructed processes. Performances are evaluated after improved business process and logistics system was applied, and it is shown that waiting time loss is decreased by 55%, and that efficiency is increased by 15%.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2016.10a
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• pp.489-492
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• 2016

Transportation in the logistics, many business organizations are engaged in monitoring and tracking the vehicles in order to improve logistics services, reduce expenses and secure security in cargo transportation. It is saving time and money by tracking and monitoring vehicles which transport cargo in supply chain of logistics. Therefore the main issue of delivery flow is to improve services, and ensure the safety in transportation system. This article suggests the tracking and monitoring model to keep safety transports on ICT network. It focuses on precise delivery control by monitoring and tracking vehicles to save time and costs. The status of product movement is analyzed for proper decision making. The vehicle embedded with RFID is automatically tracked in the movement process by tracking and monitoring model. The main role keeps safety tracking to reduce costs and to deliver products at proper time and location.

• Journal of the Korean Data and Information Science Society
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• v.21 no.2
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• pp.355-361
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• 2010

This paper addresses a mathematical approach to decision making in a real-world material distribution situation. The problem is characterized by a low-volume and highly-varied mix of products, therefore there is a lot of material movement between the facilities. This study focuses especially on the transportation scheduler with a tool that can be used to quantitatively analyze the volume of material moved, the type of truck to be used, production schedules, and due dates. In this research, we have developed a mixed integer programming problem using the minimum cost, multiperiod, multi-commodity network flow approach that minimizes the overall material movement costs. The results suggest that the optimization approach provides a set of feasible solution routes with the objective of reducing the overall fleet cost.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2013.06a
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• pp.79-80
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• 2013

이 연구에서는 화주가 물류서비스를 구매할시, 어떠한 과정을 걸쳐서 구매의사 결정이 이루어지는지 또한 신규구매와 재구매와 같이 구매 상황이 다를 경우 어떠한 요인들이 작용하고 영향을 받는지 파악하고자 한다. 화주기업들에게 설문지를 배부하여 자료를 수집하여 회귀분석을 통하여 분석하고, 구조방정식을 사용하여 검증 하였다.