• 청정기술
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• 제22권1호
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• pp.45-52
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• 2016

This study reports on the modeling and simulation of heat transfer in packaging boxes used for vaccine shipping. Both water and n-tetradecane are used as primary insulation materials inside a multi-slab system. The one-dimensional model, which is a spherical model using a radius equivalent to the rectangular geometry of container, is applied in this study. N-tetradecane with low thermal diffusivity and proper phase transition temperature exhibits higher heat transfer resistance during both heating and cooling processes compared to water. Thus, n-tetradecane is a better candidate as an insulating material for packaging containers for vaccine shipping. Furthermore, the developed method can also become a rapid and economic tool for screening appropriate phase change materials used as insulation materials with suitable properties in logistics applications.

• 한국항해항만학회지
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• 제30권7호
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• pp.579-583
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• 2006

The purpose of this paper is to study a relationship between alliance success factors and performances of strategic alliance. In order to achieve the purpose of this research, factor analysis, reliability and validity and regression method are used. In conclusion, alliance success factors can be divided as mutual complementarity and information sharing factor, sharing and mutual agreement of vision and goal factor, performance management factor and culture and organization factor. According to regression results, all of four factors affects significantly dependent variables. Among them, mutual complementarity and information sharing mostly affects each dependent variable.

• 통상정보연구
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• 제12권1호
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• pp.123-152
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• 2010

With the change of diverse business environments, the need for the third party logistics(3PL) is strategically considered for securing core abilities of manufacturers' own business. Most manufacturers are willing to have Win-Win relationship with the 3PL companies, instead of working with 3PL companies only for the purpose of reducing costs of logistics. This study has intentions to analyze determination factors of the distribution partnership which influence manufacturing firms within Gyeongsangbuk-do province and effects of partnership which exert an favorable influences on their outcome. With regard to the determination factors, it is found that determination factors consists of shipping quality, crisis management and possession of resources. And for the effects, saving logistics cost, improvement in service quality and strengthening the distribution partnership are included. This study intends to suggest helpful guidelines to business managers who seek a solution for more efficient logistics service.

• Industrial Engineering and Management Systems
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• 제8권1호
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• pp.14-21
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• 2009

We formulate a mathematical model of remanufacturing system as multi-stage reverse Logistics Network Problem (mrLNP) with minimizing the total costs for reverse logistics shipping cost and inventory holding cost at disassembly centers and processing centers over finite planning horizons. For solving this problem, in the 1st and the 2nd stages, we propose a Genetic Algorithm (GA) with priority-based encoding method combined with a new crossover operator called as Weight Mapping Crossover (WMX). A heuristic approach is applied in the 3rd stage where parts are transported from some processing centers to one manufacturer. Computer simulations show the effectiveness and efficiency of our approach. In numerical experiments, the results of the proposed method are better than pnGA (Prufer number-based GA).

• 유통과학연구
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• 제18권12호
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• pp.45-54
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• 2020

Purpose: Indonesia's maritime logistics and distribution system is currently faced with several challenges, some of which include prolonged export and import time for goods handling as well as the high logistics cost. This study further analyzes the existing business processes in maritime logistics in East Java Province in order to provide solutions to the challenges. Research design, data and methodology: This research was carried out in East Java Province, Indonesia, with data collected through field observations, documentation, and in-depth interviews with all the stakeholders involved. Results: The study showed that the number of stakeholders and activities involved in the flow of goods movement ultimately impacted the length of time. These factors can be classified into the following five: 1) export and import regulations, 2) third party logistics competencies, 3) transportation infrastructure and facilities, 4) adoption of information systems and technology, and 5) maritime line connectivity. Conclusion: Analyzing the three supply chain flows in the maritime logistics and distribution industry called for the need for improvement to increase coordination among related institutions, improve the flexibility of dwelling time to the conditions of each port, enhance service levels, improve transportation infrastructure and facilities, implement information system and technology, and develop shipping routes and networks. Therefore, a collaborative supply chain management system can be realized.

• 무역학회지
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• 제47권1호
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• pp.13-24
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• 2022

This study was conducted because the global economic downturn caused by COVID-19 caused a surge in logistics costs and it was no longer possible to predict logistics costs using existing methods. For this study, we made the assumption that economic indicators affect logistics cost. Chapter 2 examines the current status of the liner market and factors affecting logistics costs. Based on this, Chapter 3 collects independent and dependent variables to determine the analysis model. As the independent variable, economic indicators of major countries constituting the SCFI were selected, and the dependent variables were the SCFI Europe Index and the SCFI USA Index. In Chapter 4, a panel analysis was conducted based on this, and it was confirmed that major economic indicators had a negative (-) effect on SCFI. This is contrary to the existing research results, which can be attributed to the special situation caused by COVID-19 and the imbalance of demand and supply by region. The results of this study are meaningful in that they can predict long-term logistics cost volatility without analyzing supply and demand, and can be applied to other studies as well.

• 유통과학연구
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• 제11권6호
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• pp.31-40
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• 2013

Purpose - The Northeast Asian Logistic Hub strategy was established to create a national competitive advantage in northeast Asia. Countries in this region are competing fiercely to become the central base distribution port as the volume of container shipping continues to increase due to the northeast Asian (especially Chinese) economic growth. The primary method by which shippers are improving their customer service and distribution is enhancing profits by minimizing call ports on the key route through strategic affiliations and the use of large vessels. Each nation is planning large-scale investments in the construction of sea ports that can accommodate large vessels. This paper proposes ways by which the logistical strategies of domestic corporations can keep pace with changes in government policy concerning the Northeast Asian Business Hub policy. It examines the logistics system in the Northeast Asian region, analyzes the government's Northeast Asian Business Hub policy, and suggests logistical strategies for domestic corporations through an analysis based on a questionnaire designed to grasp domestic firms' needs and goals. Research design, data and methodology - The purpose of this study is to determine how shipping companies establish partnerships with third-party logistics providers and draws out the implications of the results. The survey methods used were personal interviews and questionnaires distributed to a sample population through e-mail, fax, mail, and telephone. A total of 600 questionnaires were distributed, of which 165 were returned. Among these, ten were excluded due to insufficient content; ultimately, 155 were used for the sample. The statistical data collection process was analyzed through data coating and a statistical package program. Results - This study argues that greater flexibility in policies, administration, and systems will be needed to significantly improve established business practices. In this dissertation, we primarily identify that in order to become a center of northeast Asian logistics, Korea must adopt a new paradigm and abandon the existing systems that are based on the economic and social systems that have stemmed from bureaucracy, inflexibility, chauvinism, and equalitarianism. Flexible policies, administration, and systems will be necessary to improve business practices. Domestic corporations must establish a strategic logistics hub and related network while simultaneously pursuing value-added logistics businesses by increasing their manpower and building a logistics information system. This will strengthen their competitive edge and lead to system improvements. Conclusions - Domestic corporations must adopt a new paradigm and use more reasonable business laws, systems, and policies that are based on market-driven flexibility and transparency. Moreover, social norms and regulations should be established to help ensure political and social security. Korea must also develop a culture of tolerance for foreign companies. Finally, the paradigm defining the policy governing the development of the capital city and its satellite cities in this context must be changed.

• 한국항해항만학회지
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• 제30권6호
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• pp.517-524
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• 2006

세계항만 해운 시장은 역동적으로 변화하고 있으며, 현재 9,000TEU 급 선박이 취항하여 정기 서비스를 시작하고 있으며 이러한 환경속에 세계항만들은 선도적인 위치를 차지하기 위하여 엄청난 자금을 투입하고, 법 제도 등의 규제를 완화하고 있다. 이러한 큰 물결속에 항만물류산업의 중요성이 커지고 있으며, 이는 항만선택 시 고려되는 서비스질의 향상과도 깊은 관련이 있다. 항만물류산업의 한 분야라고 할 수 있는 검수는 없어서는 안되는 중요한 요소이나 그 중요성이 간과되고 있는 실정이다. 또한 아직 검수에 대한 논문이나 보고서 등을 찾아볼 수 없는 현 상황에서 본 논문은 현재 국내 검수업에 대한 현황조사 및 설문을 통한 분석을 실시하고 향후 국내 검수업이 나아가야 할 방향을 제시해 보고자 한다.

• 디지털융복합연구
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• 제16권2호
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• pp.139-149
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• 2018

17세기 이후 항해기술의 진전과 더불어 국제무역은 증가되기 시작했다. 최근 해상운송은 화주 및 항만의 수요에 힘입어 운송모드 중 70%의 처리를 수행하고 있다. 이러한 측면에서 대부분의 연구자들은 항만개발 즉 항만수심, 항만경쟁, 항만관리 등에 집중하고 있으며, 환경, 생태계 및 조화로운 개발 등의 분야는 연구가 미진한 상황이다. 본 연구는 발틱해를 중심으로 해운, 항만 생태계, 오염 등에 집중하여 SNA 방법을 이용한 키워드네트워크를 분석하였다. 연구결과 발틱해 지역의 가장 큰 관심은 환경문제로 나타났다. 10년간의 연구기간 및 현지어로 수행된 연구결과를 포함하지 못한 한계가 있다.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2006년도 춘계학술대회 및 창립 30주년 심포지엄(논문집)
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• pp.405-410
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• 2006

세계항만 해운 시장은 역동적으로 변화하고 있으며, 현재 9,000TEU급 선박이 취항하여 정기 서비스를 시작하고 있으며 이러한 환경속에 세계항만들은 선도적인 위치를 차지하기 위하여 엄청난 자금을 투입하고, 법 제도 등의 규제를 완화하고 있다. 이러한 큰 물결속에 항만물류산업의 중요성이 커지고 있으며, 이는 항만선택 시 고려되는 서비스질의 향상과도 깊은 관련이 있다. 항만물류산업의 한 분야라고 할 수 있는 검수는 없어서는 안되는 중요한 요소이나 그 중요성이 간과되고 있는 실정이다. 또한 아직 검수에 대한 논문이나 보고서 등을 찾아볼 수 없는 현 상황에서 본 논문은 현재 국내 검수에 대한 현황조사 및 설문을 통한 분석을 실시하고 향후 국내 검수업이 나아가야 할 방향을 제시해보고자 한다.