• Journal of the Korea Society of Computer and Information
• /
• v.26 no.10
• /
• pp.167-172
• /
• 2021

After the Ferry Sewol accident, public interest in marine safety has increased. However, as the marine leisure tourism population increases, the number of casualties caused by marine accidents is increasing, so marine safety education is urgently needed. Since facilities related to marine safety education in Korea are geographically biased to the west, regional imbalances in education are significant. Therefore, this study suggested solutions to the problems of developing educational contents and securing budgets and professionals by using idle facilities of the Korea Institute of Maritime and Fisheries Technology(KIMFT) located in Busan as a maritime safety education center. In addition, as a result of estimating demand using the gravity model, it was estimated that the demand would range from 150,000 to 130,000 per year. This study sufficiently proved social policy validity for policy suggestions using existing idle sites as maritime safety education centers based on objective verification methods and is expected to contribute substantially to policy promotion in the future.

• International Area Studies Review
• /
• v.14 no.3
• /
• pp.109-130
• /
• 2010

The service sector comprises two thirds of world GDP in 2005 and takes 20% of the world trade. As the technologies such as telecommunication technologies advance, the long-distance trades in services is expected to increase. But there are few empirical research on the flows of services between regions. This paper studies the pattern of flows of long-distance trades in services across the regions. Since it is very hard to collect reliable data on long-distance trade in services, we collect data from regional input-output tables of Korea. The results shows that the hard service which can be consumed spatially separated from production tends to have more long-distance trade than the soft service which is consumed simultaneously with production. It also shows that regional gross domestic production is important factor for the pattern of trades in services.

• Journal of Korea Port Economic Association
• /
• v.38 no.4
• /
• pp.187-198
• /
• 2022

This study attempted to examine whether the spread of infectious diseases and quarantine measures such as border blockade and restrictions on movement due to the global spread of the COVID-19 pandemic is the cause of a decrease in product trade. To this end, a gravity model analysis was conducted using commodity trade statistics from Korea and major trading partners. As a result of the analysis, it was empirically confirmed that in 2020, the time of the spread of COVID-19, the influence of the COVID-19 pandemic was an obstacle to reducing Korea's trade. However, in the case of 2021, it was not possible to confirm whether the impact of the pandemic had a significant effect on commodity trade. As the impact of the COVID-19 pandemic in 2020 and 2021 is different, the commodity trade situation in 2022 when the COVID-19 epidemic is stably managed is also likely to change. Since factors such as response to COVID-19 and the spread of vaccines vary from country to country, it is thought that such various factors should be fully considered in the process of establishing policies to end the COVID-19 era

• Journal of Industrial Convergence
• /
• v.21 no.5
• /
• pp.43-50
• /
• 2023

The South Korean government announced its plan to pursue membership in the CPTPP in 2022, aiming to establish a stable supply chain within the Asia-Pacific region. The CPTPP, led by Japan, was ratified in 2018 by 11 countries with the goal of eliminating tariffs and establishing new trade rules. According to our analysis, since the implementation of the CPTPP, there has been a trade promotion effect among Japan and member countries, with greater effects observed in countries with higher GDP per capita and closer geographical distance. As long as tariff elimination and reduction proceed as planned, the trade promotion effects are expected to expand gradually. However, the expansion of trade between Japan and CPTPP member countries may also indicate a relative contraction in trade with non-member countries, potentially posing a threat to the stable supply chain in the Korean industry within the Asia-Pacific region. As Japan is Korea's fourth-largest trading partner, it is necessary to carefully consider the impact of CPTPP on Japan's future trade with member countries and engage in discussions regarding Korea's participation and negotiation content based on a thorough examination of the matter.

• Korea Trade Review
• /
• v.41 no.4
• /
• pp.221-243
• /
• 2016

This study examined the trade of the Central Asian CIS countries and the Daegu-Gyeongbuk region. These countries are rich in resources such as oil, natural gas and aluminum. These countries were switched to capitalist market economy after independence from the Soviet Union. So, these countries are considered as new emerging markets. This study analyzed the current status of trade between Daegu-Gyeongbuk region and Central Asian CIS countries. The result of analysis of the trade structure between the Daegu-Gyeongbuk and Central Asian CIS countries, and of the Daegu-Gyeongbuk region exports to Central Asian CIS countries showed insufficience when compared with the total export of korea. In this study, we used the gravity model to analyze the trade volume of the Daegu-Gyeongbuk region and Central Asian CIS countries. The result of analysis is that the globalization of Central Asian CIS countries appeared to be effective in increasing trade. In order to increase trade, Korea and CIS countries should strengthen their economic cooperation. Especially, these countries should try to implement FTAs for economic integration. The Central Asian CIS countries have an industrial structure that relies on resource exports. So, they have a blueprint for diversification of industries through national long-term plans. The Daegu-Gyeongbuk region's economy has been going through long-term stagnation. If the Daegu-Gyeongbuk companies can enter the Central Asian CIS countries, it can be a solution for the local economy.

• The Korean Journal of Petroleum Geology
• /
• v.2 no.2 s.3
• /
• pp.43-50
• /
• 1994

The geologic structure of Gongju Basin, which is a Cretaceous sedimentary basin located on the boundary of Gyeonggi Massif and Ogcheon Belt, is modeled by using gravity data and interpreted in relation with basin forming tectonism. The electrical survey with dipole-dipole array was also conducted to uncover the development of fractures in the two fault zones which form the boundaries of the basin. In the process of gravity data reduction, the terrain correction was performed by using the conic prism model, which showed better results specially for topography having a steep slope. The gravity model of the geologic structure of Gongju basin is obtained by forward modeling based on the surface geology and density inversion. It reveals that the width of the basin at its central part is about $4{\cal}km$ and about $2.5{\cal}km$ at the southern part. The depth of crystalline basement beneath sedimentary rocks of the basin is about $700{\~}400{\cal}m$ below the sea level and it is thinner in the center than in margin. The fault of the southeastern boundary appears more clearly than that of the northwestern boundary, and its fracture zone may extended to the depth of more than $1{\cal}km$. Therefore, it is thought that the tectonic movement along the fault in the southeastern boundary was much stronger. These results coincide with the appearance of broad low resistivity anomaly at the southeastern boundary of the basin in the resistivity section. The fracture zones having low density are also recognized inside the basin from the gravity model. The swelling feature of basement and the fractures in sedimentary rocks of the basin suggest that the compressional tectonic stress had also involved after the deposition of the Cretaceous sediments.

• Environmental and Resource Economics Review
• /
• v.14 no.3
• /
• pp.627-653
• /
• 2005

The paper investigates the relation between importer's environmental regulation level and export of Korea by using the gravity model. We used the trade data of OECD for the year 2001 and environmental regulation indices of WEF. The main results of these empirical analysis are as follows. First, the influence of environmental regulation on export of whole industries have a significant result. Second, this effects matters at the industry level, too. But, the effects of the environmental regulation depends on the industries.

• Magazine of the Korean Society of Agricultural Engineers
• /
• v.26 no.1
• /
• pp.38-51
• /
• 1984

Mononobe-Okabe에 의해서 옹벽에 대한 동적 토압계산법이 개발된 이래 본론두중 옹벽의 과동에 의한 변위에 대해서는 많은 연구가 이루어졌으나 Mononobe-Okabe식이 원래 옹벽 자체의 관성을 고려치 아니하였고 또 동적 하중의 작용점을 제시하지 않으므로서 전도모멘트를 계산할 수 없게 하므로서 옹벽의 전도에 의한 변위에 대해서는 연구가 되지 아니하였다. 본 연구의 목적은 해석적 방법과 모형실험을 통해서 지진 및 폭파 등의 동적 하중에 의한 옹벽의 전도에 의한 변위를 고찰하고자 하는 바 그 결과를 요약하면 다음과 같다. 1. 활동에 대한 항복가속도가 있는 것과 마찬가지로 전도에 대한 항복가속도가 있다. 이 항복가속도는 옹벽의 안전율이 증가함에 따라 증가한다. 2. 이론치와 실험치는 경향으로 보아 일치한다. 실험치가 이론치보다 작은 것은 모형실험에서 옹벽측면과 컨테이너 사이의 마찰에 기인한 것으로 보아지며 마찰을 줄임으로써 이론치에 더 접근시킬 수 있을 것이다. 3. 옹벽의 회전각도의 크기는 지반가속도가 클수록, 옹벽저면이 작을수록 그리고 흙의 내부마찰각이 작을수록 크게 증가한다. 4. 실용적인 규격의 옹벽의 변위는 활동에 의한 것보다 전도에 의한 것이 훨씬 크며 전체 변위의 대부분을 차지한다. 5. 옹벽 상단의 횡적 변위는 옹벽 설계를 결정짓는 중요한 요소가 될 수 있다.

• The Bulletin of The Korean Astronomical Society
• /
• v.39 no.1
• /
• pp.68.2-68.2
• /
• 2014

내행성계의 행성간 공간에는 행성간 티끌이 편재하고 있다. 이 행성간 티끌의 산란이나 열복사로 인하여 황도광이 관측된다. 그러나 빛에 의한 끌림힘이나 행성의 중력적 섭동으로 인하여 행성간 공간의 티끌은 수백만 ~ 수천만 년 이내에 사라질 수 밖에 없다. 따라서 행성간 공간에 티끌을 공급하는 티끌의 공급원이 지속적으로, 또는 최근에 존재하였음이 확실하다. 본 연구에서는 행성간 티끌의 공급원을 밝히기 위하여 황도광의 광학적 특성을 이용하였다. 우리는 혜성, C형 소행성, S형 소행성, X형 소행성의 반사도와 스펙트럼을 합성하여 $4600{\AA}$에서 측정된 황도광의 반사도, 연속 스펙트럼과 비교하였다. 큰 비중의 티끌이 혜성에서 기인하고 나머지가 C형 소행성과 S형 소행성에서 기인한 모형을 통하여 황도광의 광학적 특성을 설명할 수 있었다. 우리의 모형은 독립적으로 측정된 기존의 황도광 분광 관측 결과와 상합한다.

• Proceedings of the Korea Water Resources Association Conference
• /
• 2010.05a
• /
• pp.744-748
• /
• 2010

4대강 살리기 사업에 있어 하천 준설 및 다목적 보 설치는 주요하천 상 하류의 일괄적인 준설을 통한 통수단면 확보로 홍수 소통능력을 극대화 하고, 친환경적 보설치를 통해 하도정비 실시이후에도 현재의 갈수위 이상의 수위를 유지하면서 홍수피해저감효과를 극대화하는 것을 목표로 한다. 4대강 사업시 콘크리트 형식으로 건설될 다목적 보는 월류식 구조물이지만 보의 저부에서 발생하는 양압력이나 기타 재하 하중과의 조합으로 인해 전도나 활동을 일으킬 수 있는 가능성을 가질 수 있고, 보의 규모가 커지고 가동보 등의 복합적인 형태를 가질 경우 보의 붕괴는 콘크리트 중력식 댐의 붕괴와 비슷한 양상을 가질 것으로 판단된다. 본 연구에서는 월류 구조물이 붕괴되었을때 상 하류 하천에 미치는 영향을 분석하고자 하였다. 자연하천 내의 보 붕괴 및 그에 따른 수위상승으로 인한 제방 붕괴시 실제 범람원에 안정적으로 적용가능한 고정확도 2차원 홍수범람 모형을 평가하였고, 가상하도 및 실험하도에 대한 적용을 실시하였다.