• Journal of Korea Port Economic Association
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• v.28 no.3
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• pp.235-257
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• 2012

Recently the role of ports has been changed to satisfy flexibly needs of demands in global economy. A new concept for ports is not just a place for international trade but an important nodal point in logistics chain. The changing environment like this trend creates a high degree of uncertainty and leaves port managers confused with the question how to respond effectively to dynamic market. The latest studies provide that the port must have a good hinterland to achieve competitive advantages in a logistics chain. Korean Government announced "The Master Development Plan for Port Logistics Parks in Korea" in 2006. This contains the plan of hinterland construction of Busan New Port to achieve the status of logistics hub in Asian market. Previous studies rely solely on traditional DCF(discounted cash flow) analysis for investment of hinterland. However DCF method does not include irreversibility, uncertainty and the choice of timing for investment project. This thesis introduces a ROPM(real options pricing model) which overcomes the limitations of traditional valuation methods. The option valuations in this study utilize the Black-Scholes model, the binomial model and the MonteCarlo simulation to value investment opportunity of a port hinterland. In this thesis, an attempt is made to modify the NPV criterion by incorporating the real options approach, and its application is demonstrated in a hinterland construction investment plan. This research has conducted an empirical analysis by calculating economic value of the investment for a hinterland of Busan New Port.

• Journal of Korea Port Economic Association
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• v.25 no.1
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• pp.63-86
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• 2009

With increasing uncertainty of energy market in the world, the policies for the energy resource security have become crucial Several countries with poor energy resource like Netherlands and Singapore have pursued the policy for becoming an oil hub in the region. Singapore has been an oil hub in East Asia for a long time not only because it is well located with a large number of countries exporting and importing oil but it has also pursued strong policies to become an oil hub while establishing favourable institutional, regulatory and business environment for accommodating major refineries and petro-chemical companies. However with growing trading volume of petroleum products in Northeast Asia and a record high price of oil in these days, the necessities of another oil hub in the region are considered in order to reap benefits of the security of economical and stable oil. South Korea is situated astride the main North Pacific shipping route, with deep water ports and proximity to Chinese and Japanese industrial centres that make tank terminal operators Ideal choices for the oil hub in Northeast Asia although it has several disadvantages such as lack of independent storage facilities, underdeveloped oil trading market and unfavourable business friendly climates etc. This study is focused on examining the globalization strategies of tank terminal operators such as Vopak, Oiltanking and Odfjell in order to suggest the policy implications for becoming an oil tub in Northeast Asia.

• Journal of Gifted/Talented Education
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• v.25 no.5
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• pp.711-729
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• 2015

The purposes of this study are to derive the regions in Seoul that lack gifted education units by analyzing the spatial distribution of the units and to investigate the factors related to the unit locations. The gifted education units are divided into the three following types: the first type is a gifted class at a school, the second type is a gifted education center at a provincial office of education, and the third type is a gifted education center at a university. The results of using a GIS-based spatial analysis were as follows. First, a buffering analysis showed that even though there were gifted educational blind spots in Jongno-gu and in parts of the outskirts of Seoul, the spatial distribution of gifted education units in Seoul seemed homogeneous because they were too small. Second, a special quotient analysis showed that there was a hub unit of gifted education in Guro-gu. Third, an analysis of local Moran's Index showed that Jung-gu was a cold spot and Songa-gu was a hot spot. Fourth, a correlation analysis investigated that the number of gifted education units had generally no statistically significant relationship with economic factors. These results will help to improve the efficiency and equity of the management of the gifted education units in Seoul that will be established or expanded in the future.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• v.1
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• pp.57-62
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• 2006

Busan New Port, under construction aiming for the hub of Northeast Asia and Partly in operation, had damaged up to 48 billion Won due to Typhoon 'maemi' in 2003. The present criteria of domestic harbor design only describes about the critical wave height with respect to the size of vessel for harbor tranquility. The berth operation ratio which represents the annual available berthing days is depending on the efficiency of cargo handling work and this depends on the motion of the moored vessel due to the wave action and the characteristics of cargo gears. The motion of moored vessel might be related not only to the wave height but also to wave period. Furthermore, the berth operation ratio relies on external forces such as currents and winds, including the characteristics of mooring system and the specification of the moored vessel. In this study we only deal with berth operation ratio in normal sea state, considering wave and current by measured data and numerical calculation. Especially we tried to evaluate the berth operation ratio for each berth adopting the variation of dredging and reclamation plan and the change of wave environment during the process of the new port construction. For better understanding and analysis of wave transformation process, we applied the steady state spectral wave model and extended mild-slope wave model to the related site. This study summarizes comparisons of harbor responses predicted by two numerical predictions obtained at Busan New port site. Field and numerical model analysis was conducted for the original port plan and the final corrected plan.

• Journal of the Korean association of regional geographers
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• v.12 no.3
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• pp.364-381
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• 2006

Strategies for regional development has been implemented by facilitating the cultural industry since the mid 1990s. The government of Gyeongbuk attempted to establish the cluster of cultural industries and to enhance the capability of cultural industries. However, infrastructure of the industries is still weak. The most cultural industries are small-sized enterprises and are in low value-added production link in the value chain. This research examines the situation of cultural industries and then to recommend the direction of cluster of cultural industries in Gyeongbuk. The cluster of cultural industries in Gyeongbuk needs to be decentralized integration. Cultural industries in Gyeongbuk are found in dispersed regions with own cultural and industrial characteristics. The hub of cluster of cultural industries should be formulated to promote network among cultural industrial complexes in dispersed regions; thus, the hub is able to provide knowledge and information for the cultural industrial firms in Gyeongbuk. The supporting center as the hub of cluster has to input more energy to establish the on-line and off-line network among firms, and between firms and innovation agencies such as universities, cultural industrial organizations, and local governments. The cultural industrial cluster should be linked with IT cluster in Gumi and cluster of Daegu cultural industries to upgrade the value chain of cultural industries.

• Journal of Navigation and Port Research
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• v.44 no.3
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• pp.211-218
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• 2020

In recent years, the hub and spoke strategy has been strengthened in accordance with the enlargement of ships. As the needs of the port users change, the ports are also becoming larger and modernized. Under these circumstances, changes in existing port operations are expected. One example is the movement to promote economic and operational effectiveness through the joint operation of small and medium-sized operators. This study analyzed the effect of the association of small and medium-sized operators on Busan New Port in terms of economy. Additionally, the issue of cost allocation within the association of operators was presented through the game theory. As a result, in the case of operating jointly rather than divided into five operating companies as of the present, it has been shown to have a cost reduction effect in terms of operating companies. Considering the use of the Proportional method, the Shapley Value, and the Nucleus method in allocating the costs among the operators participating in the coalition, the Shapley Value method was the most suitable method in this study.

• Journal of the Korean Society of Food Science and Nutrition
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• v.33 no.5
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• pp.769-777
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• 2004

A Helicobacter pylori urease inhibitor from Rubus coreanus Miquel has been isolated and partially characterized for aiming to Prevent H. pylori growth and decrease harmful accumulation of ammonia in human gastric mucosa. We screened urease inhibitory activities in 519 extracts library prepared by solvent extraction from 173 kinds of edible plants, medicinal herbs, herbs and seaweeds using a colorimetric urease assay system. As results of primary and secondary screening, 70% acetone extract of Rubus coreanus Miquel was selected as potent candidate, showing about 24% inhibitory activity. The acetone extract was sequentially partitioned into RCE/RCWI and RCB/RCW2 layers with ethyl acetate and butanol. The major active component in RCW2, water layer from butanol fractionation was revealed to be peptidic or proteinous substance by inhibitory activity determination after pronase digestion and periodate oxidation. RCW2-IIIc a was isolated by sequential column chromatography on DEAE-Toyopearl 650C, Butrl-Toyopearl 650M and Sephadex LH-20. The isolated urease inhibitor RCW2-IIIc $\alpha$, was highly pure proteinous substance with molecular weight of 13kDa by high-performance gel permeation liquid chromatography. RCW2-IIIc$\alpha$ has about 5 times higher inhibitory activity than 70％ acetone extract, showing high stability against heat treatment and peptic digestion.

• Journal of the Korean Institute of Landscape Architecture
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• v.47 no.2
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• pp.28-48
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• 2019

This research is aimed at identifying the perception associated with urban regeneration and predicting policy implications of future directions by analyzing the trend of urban regeneration depicted in the mass media by utilizing SNA (Semantic-Network Analysis) techniques. As the number of articles has increased, it is noted through analysis that the interrelationships between social phenomena and issues have combined to form the meaning of urban regeneration. Overall, 'urban' and 'regeneration' keywords also appeared at different periods, with 'urban' closely related to 'regeneration' starting in 1970 when urbanization was becoming more prevalent. It was analyzed that the frequency of 'urban' appeared more frequently in the early 1990s, while the frequency of 'rural' decreased sharply. Until the 1990s, the slums and the recession that appeared as side effects of urban problem-solving policies were mostly concentrated in cities. Policy discussions were conducted with the goal of improving the physical environment of cities rather than concentrating on the surrounding rural areas. The distributions of the keywords 'development' and 'regeneration' have increased quantitatively since the 1970s, and urban polarization has exploded due to the development of the external growth of cities, mirroring the trend of accelerated environmental threats. In particular, the keywords for 'regeneration' emerged mainly related to environmental problems, which led to the need for urban regeneration, and environmentally and ecologically friendly development. The emergence of "urban," "regeneration" and "environment" as keywords having to do with urban regeneration grew in the 1990s. This suggests that urban regeneration is now linked to "environment", as that has become a social issue.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2019.04a
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• pp.84-84
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• 2019

산채류의 종자 및 종묘는 시중 거래가격이 높게 형성되어 재배농가의 경영비 증가로 이어지고 있다. 특히 산채 꾸러미에 분류되는 작물 중 개미취(Aster tataricus), 섬쑥부쟁이(Aster glehnii ), 우산나물(Syneilesis palmata)은 주로 종묘의 형태로 공급되어 수급이 안정치 못하다. 이에 본시험은 개미취, 섬쑥부쟁이, 우산나물의 우량종자 생산을 위한 종자 결실률 향상 재배조건과 채종적기를 구명하고자 하였다. 시험작목을 전북 남원시 허브산채시험장에서 2016년 4월에 종묘를 노지에 정식하였다. 적정 채종 재배조건을 구명하기 위해 2018년 노지, 하우스, 55% 차광막을 설치한 처리구별 각 작물의 개화시기, 개화율, 생육특성, 결실률 등을 조사하였다. 또한 채종적기를 설정하기 위해서 각 작물별 개화 후 50일, 70일, 90일, 110일, 130일 간격으로 채종하여 결실률과 종자 발아율을 조사하였다. 개화가 시작된 일자는 개미취의 경우 하우스재배, 노지재배, 차광재배 순으로 빨랐으며 섬쑥부쟁이는 노지재배에서 개화시기가 가장 늦었다. 모든 작물의 개화가 종료되는 시점은 처리 간 차이가 없었다. 개화율은 개미취와 섬쑥부쟁이는 노지재배, 하우스재배, 차광재배 순으로 많았으며 우산나물은 노지재배시 개화율이 9.3%로 매우 낮았다. 개화기 생육특성을 조사한 결과 개미취는 초장과 엽폭이 차광재배, 하우스재배, 노지재배 순으로 커지는 경향이었으며, 섬쑥부쟁이는 하우스 재배에서 타 재배방법에 비해 우수하였다. 우산나물은 차광재배에서 생육이 가장 좋았다. 결실률은 개미취와 섬쑥부쟁이는 재배방법에 상관없이 결실률이 60%이상이었다. 반면 우산나물은 평균 31%로 타작물에 비해 상대적으로 결실률이 낮았으며 차광 재배일 때 43%로 가장 결실률이 좋았다. 개미취는 개화 50일 이후부터 종자 결실률이 65%이상으로 높았으며, 섬쑥부쟁이의 결실률은 개화 후 50일이 가장 좋았으며, 그 이후로 점차 결실률이 떨어지는 경향이었다. 우산나물은 개화 후 90~110일경에 가장 결실률이 높은 경향이었다. 개미취는 개화 후 70일일 때 가장 발아율이 낮았으며, 90일일 때 가장 발아율이 좋았다. 섬쑥부쟁이의 발아율은 개화 50일 이후부터 최종 채종시기까지 80%이상으로 우수하였다. 우산나물은 채종시기에 따라 발아율 정도가 매우 상이하여, 채종시기가 늦어질수록 발아율이 높아졌다. 따라서 개미취는 하우스 재배를 통해 개화 후 90일 때 채종하는 것이 가장 발아율이 좋았으며, 섬쑥부쟁이는 차광재배일 경우 개화 50일 이후에는 발아율이 90% 이상이므로 이때부터 종자비산 전까지가 채종적기로 판단된다. 우산나물은 타작물에 비해 다소 결실률이 떨어지나 차광재배 시 개화 110일 후 우량종자를 채종할 수 있을 것으로 여겨진다.

• Journal of Korea Port Economic Association
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• v.35 no.1
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• pp.139-162
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• 2019

In the case of Korea, policy support for shipping companies is limited, and the financial support should address the scale and period of support. Comprehensive measures are needed to boost the chances of reviving the industry. In order to secure competitiveness, the shipping companies need to make continuous efforts, prepare for the future by strengthening environmental regulations, and ensure that they have the ability to be flexible in their responses. The shipbuilding industry witnessed some improvement last year amid severe recession, but reforms are needed to address external and internal structural problems; further, to gain the characteristics of future leading industries, it is necessary to secure core technologies, as well as differentiated and specialized industrial competitiveness among rival countries through joint government intervention and joint R&D investment. Taking these steps will ensure that it has environment-friendly vessels and economic shipbuilding capabilities. The competitiveness of Busan Port should enable the utilization of the geopolitical characteristics of East Asia and contribute to: regional economic revitalization; development of its status as hub port; and securing the position of developed countries in East Asian logistics. For this purpose, it is necessary to establish a strategy to: expand the usability of shipowners/carriers; improve the quality of port operations; improve the portability of the smart system; expand the port of mega-ocean carriers; speed up port operations; and create low-cost ports. The establishment of a network of four countries will also require long-term global linkages. For example, there is a need to establish a logistics network between Eurasia and the European region, which will use the Russian Land Bridge System, as well as that of China.