• 수산해양교육연구
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• 제26권4호
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• pp.749-759
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• 2014

With the rapid development of global economic and trade, the ports in the North-east Asia region have developed rapidly. Ocean shipping plays an irreplaceable role in China's foreign trade. Improvement of China's economy and continuous increase of trade in North-East Asia have made China as the number one in the world in container transport. Tianjin port which is the biggest international trade port in North-east China. Tianjin Binhai New District has incorporated in (CPC Central Committee on the outline of the Eleventh Five-Year Plan for national economic and social development proposals) which had adopted by The Fifth Plenary Session of the 16th CPC Central Committee. However, the competitions between ports are getting intense, the construction of Northeast Asia shipping center is in the ascendant, which bring new opportunity and challenge to the development of Tianjin port logistics. Therefore, Tianjin should according to its characteristics, integrating port resources, exert great efforts in developing port logistics, thus promoting regional economic development. Therefore, it is necessary to make the main study on the development strategy of Tianjin port logistics.

• 수산해양교육연구
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• 제20권3호
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• pp.416-428
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• 2008

In the end of 2007, Korea Government promulgated the Rule of 'Basic Act of Logistics Policy' for improving international logistics forwarding business. The goals of these rules are to achieve the development of our nation's economics for providing the security and efficiency of logistics system and enforced competition of logistics enterprises. This is established the basic principles of the legal basis for expanding into the Logistics Hub Center of North-east Asia. However In May 1999 new licensing requirements for ocean freight forwarders and NVOCCs operating in the USA were established by the US Federal Maritime Commission(FMC). Due to these regulations, each ocean transportation service provider in the USA acting as ocean freight forwarder, NVOCCs, or NVOCC agent must obtain a license to operate as Ocean Transportation Intermediary(OTI) before it begins operations. Only licensed OTIs may act as US transportation agents or receiving agents of other NVOCCs, on both US exports and imports. In this context, I think this study will be contributes for the development of korean freight forwarding system by analysis and comparing with between the Rule of the Basic Act of Logistics Policy of Korea and OTI freight forwarder & NVOCCs of USA.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2006년도 하계종합학술대회
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• pp.699-700
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• 2006

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2023년도 춘계학술대회
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• pp.256-257
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• 2023

This paper aims to propose optimal method to assess and cumulate the daily profit for liner shipping to support the shipping lines in making optimal decision with the highest average daily profit. This paper not only explains the actual calculated results align with decision-makers' behavior from concepts indicated in cumulative prospect theory but also contributes to an easy-to-apply method for liner shipping network predictability in and provides optimal decision-making is helpful for shipping managers for the best effective selection of the most appropriate alternative under uncertainties.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2023년도 춘계학술대회
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• pp.254-255
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• 2023

This paper discovers a robust managerial strategy for a stochastic inventory of perishable products, where the model experiences changing factors including inner parameters and an external disturbance with unknown form. An analytical solution for the optimization problem can be obtained by applying the Hamilton-Bellman-Jacobi equation, however the policy result cannot completely suppress the oscillation from the external disturbance. Therefore, an intelligent approach named Radial Basis Function Neural Networks is applied to estimate the unknown disturbance and provide a robust controller to manipulate the inventory level more effective. The final results show the outstanding performance of RBFNN controller, where both the estimation error and control error are guaranteed in the predefined limit.

• 한국항해항만학회지
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• 제27권4호
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• pp.389-395
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• 2003

본 연구는 산업계 구조변화와 그에 따른 새로운 비즈니스 형태를 체계적으로 분류하고 해석하기 위한 이론과 개념을 수립하고 그것을 토대로 e-business를 포함한 새로운 비즈니스의 분류 프레임워크를 제안하는 것을 목적으로 한다. 제안한 모델은 비즈니스의 계층성에 주목한 비즈니스 계층(BL)의 개념, 업계를 연계하는 가치사슬(VC)의 개념, 그리고 실세계(혹은 실 주체)와 가상공간 세계(혹은 가상주체)의 개념을 상징 하는 R/V(Real/Virtual)의 개념을 기본 프레임으로 하여 구성되었으며, 이러한 BL-VC-R/V의 조합을 통해 이론상 해당업계에서 존재할 수 있는 모든 비즈니스의 분류가 가능하다는 점을 보였다. 한편, 본 연구에서는 제안된 프레임워크의 개념을 토대로 e-business의 새로운 정의를 제시하였고, 산업에 본 모델을 적용하여 공간시장화에 따른 구조변화와 그에 따른 비즈니스 분류를 행하였다. 그리고, 비즈니스차원의 관점에서 최근에 거론되고 있는 e-Logistics를 새롭게 정의하였다.

• 한국항해항만학회지
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• 제43권2호
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• pp.122-133
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• 2019

The maritime industry has emerged as a new growth engine. The municipalities that own the port are trying to add value through the maritime industry. Overseas port cities are also creating maritime industrial clusters to generate profits and strengthen competitiveness. Therefore, it is very important to understand the comparative status of the domestic maritime industry by region. Based on this analysis, it is possible to establish maritime industrial clusters and strategies for integration. This study analyzed the structure of the maritime industry located in Jeollanamdo province, the southwestern part of Korea. Through the analysis of existing literature, the maritime industry was reclassified into 5 major categories, 21 subcategories, and 84 subcategories. Based on the reclassified maritime industry, the analysis of the Jeollanamdo province maritime industry was based on applying the location quotient and the shift-share analysis. As a result of analyzing the geographical location of Jeollanamdo province, other industries showed the highest value of 2.790, followed by fisheries (2.227), shipbuilding industry (1.164) and marine tourism industry (0.554). The growth effect of the maritime industry in Jeollanamdo province was 35,323 people, and net growth effect excluding national growth effect was 11,945 people. In particular, the net growth effect of the shipbuilding industry was the highest at 11,320, followed by shipping logistics (6,371) and marine tourism (1,529). On the other hand, there was no net growth effect in fisheries. The results of this study can be used as basic data for the construction of the maritime industrial cluster for Jellanamdo province in the future.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2014년도 춘계학술대회
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• pp.221-222
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• 2014

지속적인 유가 상승과 탄소배출 규제 강화는 기업들로 하여금 높은 경쟁력을 가지도록 요구한다. 따라서 고객 서비스 증대와 비용절감을 위해 효율적인 물류시스템을 구축하고 운영하는 것에 많은 노력을 기울이고 있으며 비용 경쟁력을 가지는 친환경 산업단지의 필요성이 증대되고 있는 실정이다. 부산시에서는 친환경정책을 통해 경쟁우위를 점하고 부족한 산업단지를 충족시키기 위해 서부산권에 '부산신항배후 국제산업물류도시'를 선정하고 개발을 진행하고 있다. 이러한 산업단지를 구축하기 위해서는 적절한 정책과 화물수송 공동화를 통한 물류시스템이 필요하다. 특히, 산업 단지내 물류시스템의 체계구축을 통한 효율적인 운영은 저비용 친환경적인 측면에서 매우 중요하다. 따라서 본 연구에서는 물류체계를 분석하고 분석내용을 바탕으로 물류네트워크 운영모델을 제시함으로서 산업단지의 기반을 마련하는데 목적이 있다.

• 한국항만경제학회지
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• 제27권1호
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• pp.111-135
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• 2011

본 연구의 목적은 우리의 에너지 물류에 대한 현황을 살펴본 후 이를 바탕으로 수송과 정상의 위협요인을 규명하고, 한반도의 위기 상황 시 에너지 물류에 대한 정책적 대안을 제시하는데 있다. 즉 우리가 에너지를 수송하면서 거치게 되는 각 주요 노선에서의 위협 상황과 주요 문제들에 대해 살펴보았다. 또한 각 에너지 수송 과정의 위협요인들을 규명했으며 그에 따른 전략 및 정책적 대안에 대해 제언했다. 또한, 우리 에너지 수송 과정에서 통과해야하는 호르무즈해협과 인근의 소말리아 동부 및 아덴만 지역, 그리고 말라카해협에서의 안보상황을 정치적 상황과 해적 등의 각 위협상황에 살펴보고 그에 대한 대응책을 제시했다. 그리고 에너지 수송의 최종 기착지인 한반도 위기 상황 발생 시 안정적 에너지 공급을 위해 가채연수를 고려한 에너지 수입지역의 다변화과 주변 국가들과 협력체제 구축의 필요성을 제시했다. 이를 통해 수송루트상의 위험과 수입지역 자체에 대한 위험을 줄이고 인근 주변 국가들과의 협력을 통한 위협 요인에 대한 공동대응을 제시했다.

• 해양환경안전학회지
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• 제25권3호
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• pp.306-312
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• 2019

This paper investigates to design a controller for maritime autonomous surface ship (MASS) by means of adaptive super-twisting algorithm (ASTA). A input-out feedback linearization method is considered for multi-input multi-output (MIMO) system. Sliding Mode Controller (SMC) is suitable for MASS subject to ocean environments due to its robustness against parameter uncertainties and disturbances. However, conventional SMC has inherent disadvantages so-called, chattering phenomenon, which resulted from the high frequency of switching terms. Chattering may cause harmful failure of actuators such as propeller and rudder of ships. The main contribution of this work is to address an appropriate controller for MASS, simultaneously controls surge and yaw motion in severe step inputs. Proposed control mechanism well provides convergence bewildered by external disturbances in the middle of steady-state responses as well as chattering attenuation. Also, the adaptive algorithm is contributed to reducing non-overestimated value of control gains. Control inputs of surge and yaw motion are displayed by smoother curves without excessive control activities of actuators. Finally, no overshoot can be seen in transient responses.