• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.4
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• pp.41-46
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• 2018

Recently, the importance of the northeast economies including Russia has been growing, and according to the Eurasian initiative policy, the enhancement of transportation, logistics and connectivity between the northeast Asian countries is emerging as one of the challenges for future growth. However, due to the different vehicle systems used in each country, the railway connections between countries are not operating smoothly. Especially, the couplers of the railway cars which pass through the countries of northeast Asia including Russia have different regulations, which render their shape and characteristics incompatible. In this study, we propose a method of interconnecting the AAR type coupler used in Korea and China and the CA-3 type coupler compatible with the Russian GOST standard, and verify that its structural safety conforms with each set of regulations. We analyze the possibilities offered by this method of interconnection by performing tests while developing materials satisfying the mechanical properties required for the freight coupler.

• International Area Studies Review
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• v.14 no.3
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• pp.477-498
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• 2010

This paper studies economic growth convergence conditioning on various characteristics of East Asian countries. Our findings suggest that when trade openness is conditioned in addition to human capital and investment, the economic growth rates for East Asian countries converge faster than when human capital and investment alone are considered. In particular, while Northeast Asian countries exhibit absolute economic growth convergence as well as economic growth convergence conditioned on trade openness, Southeast Asian countries show only economic growth convergence conditioned on trade openness. Analysis of policy implications based on the results of the first East Asian countries' high dependence on foreign trade, trade openness in the convergence of economic growth has had a significant positive effect. Second, in order to establish a regional economic integration in East Asia, Northeast Asia and Southeast Asia, the country's economic growth is necessary to reduce the gap.

• Journal of Korea Port Economic Association
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• v.40 no.1
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• pp.71-85
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• 2024

Due to the impact of COVID-19 in 2020, online growth is increasing more rapidly, and the need for MFCs has become important to strengthen the Last Mile service, especially in Gangnam and Seocho, where population density is high. This study analyzed MFC operation case studies using Arc GIS (Geographic Information System), and in the case of Seoul, delivery to four MFC bases is not possible within 30 minutes, and for delivery within 30 minutes, it is necessary to secure MFC bases in areas with many consumers. As a result of the analysis, it was confirmed that two to three MFC operating bases are needed for each region based on Seoul Metropolitan Government and at least one base for each administrative district depending on the delivery service after ordering.

• Proceedings of The Korean Society of Agricultural and Forest Meteorology Conference
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• 2014.10a
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• pp.154-157
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• 2014

• Proceedings of the KSR Conference
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• 2005.05a
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• pp.1125-1131
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• 2005

This study is based on the assumption of surface transport linkages between Korea and China. Active economic cooperation between South Korea and North Korea are expected within the near future and Russia and China have interested in the land transport linkages in Korean peninsula. How much freight demands between the two countries that has been mainly dependent on air and sea transportation so far may convert the transport mode to surface transportation are estimated. Particularly, freight demands between South Korea and China's three northeast provinces are focused. The sensitivity analysis depends on transport time and transport cost changes is included. The modal shifts is estimated to be more sensitive to the changes in transport costs than those in transport time, suggesting the importance of transport costs of rail and road. Despite the dearth of data on the surface transport operation in North Korea, the attempts made in this study to estimate the demand conversion are hope to provide reference points for potential effects of the rail and road transport connections between China and the Korea peninsula before our discussions expand to the establishment of freight transport network of the northest Asia and, moreover, the Eurasian continent.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.7 no.4
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• pp.89-97
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• 2004

동북아지역에서는 최근 산업화와 도시화로 인하여 많은 개발행위가 이루어져 왔으며, 그에 따라 개발과 환경적 결과와의 관계가 주목을 받기 시작했다. 선진국에서는 이미 이러한 관계에 있어 환경적요소가 의사결정단계에서부터 고려될 수 있도록 제도적 보완이 이루어져 왔으나 동 지역에서는 그간 이에 대한 대응이 미비했던 것이 사실이다. 이러한 관점에서, 동 연구는 동북아지역에서의 환경영향평가의 비교를 통한 상호 제도의 이해증진을 위해 수행되었다. 특히, 본 연구의 목적은 골프장 조성사업에 대한 환경영향평가를 수행함에 있어 중점평가항목과 운영 측면에서의 양국간 환경영향평가를 비교함으로써 향후 양국간에 월경성 환경협력 기반을 마련하는데 있다. 연구의 주요 결과는 첫째, 환경영향평가항목 측면에서 한국의 경우 지형 지질, 동 식물상, 토지이용, 수질, 토양, 소음 진동, 위락 경관, 교통 등8개의 중점평가 항목을 설정하여 다소 항목수가 많고 내용적으로는 체계와 형식을 중시하고 있는 반면, 중국의 경우에서는 지하수, 지표수, 생태계 등3개의 중점평가 항목을 설정하여 항목 수는 적으나 비교적 구체적이고 현실 상황을 잘 반영하고 있는 것으로 나타났다. 둘째, 운영상 측면에서 한국의 골프장 환경영향평가서는 수질, 생태계 훼손 등을 강조하고 있는 반면, 중국은 도로사면 훼손, 경관, 수질 등에 초점을 두고 있어 양국의 골프장 조성에 있어 환경에 미치는 주요영향 요소선정에 차이가 있는 것으로 나타났다.

• The Journal of the Petrological Society of Korea
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• v.15 no.2 s.44
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• pp.49-59
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• 2006

This study clarifies the deformation history of Precambrian metamorphic rocks of Sobaegsan Massif (Wonnam Formation, Pyeonghae granite gneiss, Hada leucogranite gneiss) in Giseong-myeon area, Uljin-gun, Korea. It is based on the geometric and kinematic features and the developing sequence of multi-deformed rock structures. It also reviews the extension of Yecheon Shear Zone and the relative occurrence time of each deformation phase from previous researches. It suggests that the geological structure was formed at least through five phases of deformation after formation of their gneissosity or schistosity. (1) The first phase of deformation took placed under compression of ENE-WSW direction, forming NNW trending regional foliation and very tight isoclinal fold. The general trend of gneissosity or schistosity is inferred to be ENE before the first phase of deformation, being rearranged into NNW by the isoclinal folding. (2) The second phase of deformation formed ENE trending regional foliation and tight, isoclinal, rootless intrafolial folds under compression of NNW-SSE direction [occurrence time: after deposition (Permian age) of Dongsugok Formation, Pyeongan Croup, Janggunbong area]. (3) The third phase of deformation occurred by dextral ductile shearing on the regional foliation, forming stretching lineation of ENE trend and S-C mylonitic structure (after intrusion of Hesozoic homblende granite, Sangunmyeon area-before intrusion of Mesozoic Chunyang granite, Janggunbong area). (4) The fourth phase occurred under (E)NE-(W)SW compression, forming (N)NW trending open fold. (5) The fifth phase took place under N-S compression, forming NNE and NNW trending conjugate strike-slip faults, E-W trending thrust-slip faults, and drag folds related to these fault movements. The deformed structures of fourth and fifth phases result from tectonic movement associated with the developing of the Gyeongsang Basin in Cretaceous age, and it partially rearranged the general ENE trend of the regional foliation in the study area. It also suggests that the Yecheon Shear Zone of E-W trending extends into this area but the ductile shear deformation is weakly developed.

• Journal of the Korean Society for information Management
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• v.27 no.3
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• pp.103-123
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• 2010

Recently, research community in Korea has shown a rapid growth in collaborating with Asian countries. In this study, we analyzed research collaboration among Asian countries using network analysis of co-authored papers as well as subject categories. The network of co-authored papers among Asian countries over the 5-year period since 2005 revealed that Japan, China, and Korea were positioned at the central part of the network and highly productive in collaborative research. In the analysis of the subject categories of co-authored papers in four different Asian regions with 2009 data, physics and material science were found the most productive subject fields in collaborative research in Northeast Asia. On the other hand, medical science was the most collaborative subject field in the remaining Asian regions.

• Korean Journal of Remote Sensing
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• v.30 no.5
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• pp.559-570
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• 2014

Backscatter signal observed from the space-borne Light Detection And Ranging (LIDAR) system is providing unique 3-dimensional spatial distribution as well as temporal variations for atmospheric aerosols. In this study, the continuous observations for aerosol profiles were analyzed during a years of 2012 by using a Cloud-Aerosol LIDAR with Orthogonal Polarization (CALIOP), carried on the Cloud-Aerosol LIDAR and Infrared Pathfinder Satellite Observation (CALIPSO) satellite. The statistical analysis on the particulate extinction coefficient and depolarization ratio for each altitude was conducted according to time and space in order to estimate the variation of optical properties of aerosols over Northeast Asia ($E110^{\circ}-140^{\circ}$, $N20^{\circ}$ $-50^{\circ}$). The most frequent altitudes of aerosols are clearly identified and seasonal mean aerosol profiles vary with season. Since relatively high particle depolarization ratios (>0.5) are found during all seasons, it is considered that the non-spherical aerosols mixed with pollution are mainly exists over study area. This study forms initial regional 3-dimensional aerosol information, which will be extended and improved over time for estimation of aerosol climatology and event cases.

• Journal of the korean veterinary medical association
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• v.46 no.6
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• pp.527-543
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• 2010

구제역은 소 돼지 사슴 면양 산양 고라니 노루 등 우제류 동물에서 발생하는 제1종 가축전염병으로 빠른 시간내에 동물의 입 발굽 젖꼭지 등에 수포를 형성하는 것이 특징이다. 감염된 소의 혓바닥, 잇몸, 입술, 입 내부점막, 주둥이에 크기가 다양한 수포가 형성된다. 심한 경우에 혀 전체 넓은 부위에서 궤양이 형성될 수 있다. 수포는 24시간이내에 정상적으로는 파열되며, 그 수포액은 $10^8/ml$의 역가를 갖는 바이러스를 함유한다. 상피가 떨어지고, 유연이 심해지며, 타액이 입 주변에 흔건히 흘러내린다. 입 주변 병변과 동시 또는 이어서 수포가 발굽에 형성되며, 부분적으로 발굽갓띠 또는 제부의 갈라진 틈에서 생성되어 통증과 파행의 원인이 된다. 수포는 보통 유두와 유방에 발생되며, 때로는 세균성 유방염을 발생시킨다. 생산성의 감소는 보통 25% 정도로 추정된다. 돼지는 초기에 파행, 발열, 의기소침, 식욕부진이 있다. 소 보다 발굽에서 더욱 증상이 심하다. 유두, 유선, 콧등에 수포가 형성된다. 혀의 병변은 소보다 심하지 않다. 잠복기가 2~14일 (소에서의 약 6.2일, 돼지에서는 약 10.2일)로 짧고, 전파가 매우 빠르며 경제적 피해가 크기 때문에 국제 교역에서도 규제대상이 되는 질병이다. 구제역의 병인체는 피코르나바이러스과 아프토바이러스속에 속하는 구제역 바이러스로 현재까지 7개의 혈청형(A, O, C, Asia 1, SAT 1, SAT 2 및 SAT 3)이 알려져 있다. 이 전염병은 동물전염병 중에서 가장 악명 높은 전염병이다. 세계동물보건기구 (OIE)에서도 각 국간에 국제적인 위협을 최소화하기 위하여 질병의 발생을 보고해야 하는 질병으로 특별 관리하고 있다. 2006년 이후 최근까지 아시아 지역에서 지속적으로 많은 발생을 보이고 있다. 금년 들어 중국, 대만, 일본, 몽골, 우리나라까지 발생되어 이 질병의 위험성에 대하여 다시 한번 생각하게 하였다. 구제역의 재발방지를 위하여 최근 동북아시아 지역의 발생상황과 향후 구제역의 발생억제 또는 발생시 긴급 대응을 위하여 해야 할 일은 무엇인지 알아보자.