• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2020.11a
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• pp.20-22
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• 2020

한진해운 파산, 해운동맹 재편 이후 부산신항 컨테이너터미널의 운영 결과를 분석해 보고자한다. 이 연구에서는 DEA를 활용한 효율성 분석과 더 나아가 터미널 내부 자료를 활용한 생산성 분석을 통하여 터미널 운영사 간 비교를 통하여 시사점을 제공하였다.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2004.05a
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• pp.201-204
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• 2004

SCM(Supply Chain Management)와 로지스틱스에 관한 관심은 최근 몇 년간 많은 사람들의 관심을 끌고 있다. 수많은 혁신기법들을 통해 사업 내 낭비의 요소들을 찾아 비용을 절감하면서 생산성 향상을 통해 기업의 수익을 올리는 식의 방법에 한계를 느끼던 기업은 상대적으로 관심이 적었던 SCM과 물류관리 방면으로 눈을 돌리게 되었다. 특히 많은 기업들은 국가의 인지도와 기업의 이미지와 기술력을 통한 경쟁력이 해외로부터 인식되면서 과거 OEM 방식의 통한 수출에서 벋어나 자가 브랜드로 해외 진출을 꾀하면서 OEM 제품과 자가 제품들에 대한 관리를 위해 해외 거점에 대한 관심이 커지기 시작하였다. 이 논문에서는 지리정보시스템(GIS)을 사용하여 국내 기업의 미주 물류거점 구축 전략을 설명한다. 기업이 물류거점을 결정할 때 어떤 방식을 이용하는지, 의사결정지원시스템으로써 지리정보시스템을 어떻게 사용하고, 어떤 과정을 거쳐 물류거점이 결정되는지를 설명하게 될 것이다.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2006.05a
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• pp.1765-1770
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• 2006

본 논문에서는 반도체 fab 라인의 물류 설비를 event graph로 모델링 하는 방법론을 제안하고 있다. 최근 반도체 fab 라인 같은 대표적인 자본 집약적 제조라인에서는 운영단계에서 투입 계획, PM schedule 및 operation rule 등을 변화시켜 가며 평가 및 검증해 볼 수 있는 what-if simulation을 위한 line simulator의 필요성이 점점 높아지고 있다. 그러나 상용 simulator는 각 제조라인의 특성에 맞게 customization하는데 많은 시간과 비용이 소요될 뿐만 아니라 특성을 반영하는데 한계가 있다. 따라서 이러한 line simulator를 개발할 때 근간이 되는 설비의 simulation model이 필요하다. 이 때 설비들은 생산(processing) 및 물류(handling) 설비로 나눌 수 있는데, 본 논문에서는 반도체 fab 라인의 물류 설비 모델링 방법을 제시하고 실제 물류 설비를 모델링 해 봄으로써 그 효용성을 알아본다.

• Proceedings of the Korea Information Processing Society Conference
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• 2022.11a
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• pp.1062-1064
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• 2022

해외로 이동하고 있는 컨테이너 화물의 실시간 위치를 확인하고 기상정보 및 국제 이슈 등을 고려하여 도착 예상 시간을 계산해 화물의 도착 예정시간을 실시간으로 확인할 수 있는 서비스이다. 그동안 선박 추적 시스템은 해외 서비스에 의존해왔으며, 선사에서 자체적으로 제공하는 정보는 정확도가 40%에 미치는 한계가 존재했다. 이러한 문제점을 보완하여, 해당 서비스를 통해 빅데이터 기반의 분석과 향후 프로젝트 운영을 통해 축적될 시스템 상의 데이터와 현장의 데이터를 취합하여 높은 정확도를 이룰 수 있을 것으로 예상한다. 이를 통해 수출 기업들은 안전재고를 감축할 수 있게 되어 보관 관련 물류비용을 절감할 수 있게 될 것이다. 또한 보다 정확한 제조 일정을 수립할 수 있게 되어 과잉 생산을 방지할 수 있음을 기대해볼 수 있다.

• Journal of Korea Port Economic Association
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• v.24 no.4
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• pp.173-197
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• 2008

The purpose of this study is to analyse the spill-out effects of logistics industries among Korea, Japan and China. For this purpose, we used an International I/O table made by Asian Economic Institute of Japan, which is made up for 11 countries. At first, we transformed the I/O table for 11 countries into that for 3 countries, and then we applied the Inter-Regional Input Ouput model to find out the spill-out effects of one country's logistics investment to another country's logistics or other industries. The contribution of this study is that this paper has suggested a method how to evaluate a logistics interrelation among 3 countries by way of I/O analysis for the first time.

• International Area Studies Review
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• v.13 no.1
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• pp.123-143
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• 2009

This paper investigates the determinants of total factor productivity(TFP) growth in Korean logistics industry such as market share, ownership structure, age of firm, firm size and debt ratio. Using financial data on individual firms in Korean logistics industry, we first estimate firm-level TFP growth rate and then, regress the estimated TFP growth rate on individual firms market power and structural characteristics. Our empirical results show that logistics firms market share is negatively correlated with their TFP growth rate. Also, we find that older or larger firms are more likely to have higher TFP growth rate.

• Journal of Korea Port Economic Association
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• v.28 no.4
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• pp.59-77
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• 2012

Inland transportation system has been improving inefficiencies and structural problems due to excess of supply. Therefore, inland transportation market needs to reform its regional logistics structure in order to increase its competitiveness. To improve the solution, the research studied efficiencies and productivity of inland transportation systems in regions. In order to obtain specific facts, each cities' five years of (2005-2009) balanced panel data on inland transportation system has been studied. According to CCR and BCC analysis, Ul-San has been evaluated as the most efficient DMU during 2005-2008. In addition, in 2009, Seoul was the most efficient DMU. Also, according to Window analysis, Gwan-Ju and Gwangwon-do scored 0.062. Therefore, they were estimated as stable DMUs. According to Malmquist productivity analysis, average productivity indexes of four terms of Chungcheongnam-do and Chungcheongbuk-do haves been increased to 6.6% and 7.3%. I hope this study contributes to the improvement of regional inland transportation system.

• Journal of the Korea Organic Resources Recycling Association
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• v.19 no.2
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• pp.22-27
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• 2011

This study was performed to find out the optimum condition for hydrogen production by changing mixture ratio from 3:7(food waste water : swine wastewater) without pre-treatment of food wastewater and swine wastewater using a continuous reaction process. It was confirmed that hydrogen generation according to pH is the highest in a condition of pH 5.5, and that the optimum pH for hydrogen production in case of mixing food wastewater with swine wastewater is 5.5 through this. Hydrogen generation according to HRT showed high hydrogen generation rate in case of 4 days rather than 3 days, and this involves largely in vitality of hydrogen producing bacteria according to variation of the HRT value, so it is judged that HRT also acts as an important factor to hydrogen producing bacteria. The organic removal efficiency recorded a removal efficiency of maximum TS 52%, VS 71%, TSS 83% and VSS 89% at the 6th day of operation, and it was confirmed that organic removal efficiency is possible even through an hydrogen production process.

• Journal of Korea Port Economic Association
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• v.31 no.3
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• pp.41-60
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• 2015

This paper investigates whether managerial ownership and foreign ownership have impacts on firm value, using a sample of logistics firms listed on the Korea Stock Exchange between 2008 and 2014. In the Korean economy, family-controlled business groups, known as chaebol, constitute a unique governance system. To acquire investments from controlling shareholders, a logistics firm is likely to be included in family-controlled business groups. Since reform of the governance structure of logistics firms in the South Korea enables shareholder value to be maximized, we analyzed ownership effects on firm value using pooled ordinary least squares. Empirical results showed that there was a significant positive relation between managerial ownership and firm value. This study also found that there was a significant positive relation between foreign ownership and firm value. We thus show that both managerial ownership and foreign ownership can protect shareholders by positively affecting firm values.

• Convergence Security Journal
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• v.13 no.1
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• pp.25-30
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• 2013

In this paper, the key performance index for advanced logistics is analyzed, and the specific requirements for the material flow IT services are proposed to improve the world competitiveness of the material flow industries and to implement the advanced logistics in Korea by survey research. The key performance index is classified into three types of efficiency, sustainability and economics, and two classes of enterprise and public for IT services are proposed. In addition to, for case studies, the survey analysis for the Pyeongtaek Port is performed to diagnose the material flow enterprise and to analyze the priorities of the IT services for Port's employee, trade enterprise, public service personnel, and local resident. From the results, to improve the productivity and efficiency of the enterprise, the secure the professional man-power and standardization are needed, and the automation, u-Port, green technology and material flow security for the IT services are required.