• The Korean Journal of Air & Space Law and Policy
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• v.1
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• pp.125-146
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• 1989

This paper is examine the problems of U.S.-Korea Air Service Agreement and recommend some directions for its improvement under the rapidly changing circumstance and growing importance of Korean penisula. Since the provisional agreement of 1949, U.S. -Korea Air Service Agreement has consistently been favorable to U.S. side. Fair and equal opportunity is the principle and basis of the bilateral air agreement. Notwithstanding such principle, it is only the U.S. carriers who can freely enter into any market, under the discretion of business strategy, while Korean carrier can serve only three points including Honolulu. In an effort to recitify such serious imbalance, Korea continuousely requested additional rights and has given utmost efforts to accommodate requests made by U.S. carries without much success. When we review aviation market between Korea and U.S. under the present agreement, Korea is fully open to U.S. carries as they can connect from any or all points in the U.S. via any or all points in Korea and all points beyond Korea. Increased number of U.S. carriers are enjoying greater utilization of the opportunity accorded them. Four(4) U.S. carries now operate to Korea using thirteen(13) gateway points and about one hundred fifty(150) on-line points in the U.S. such imbalance can be well understood when we review the exchange of traffic rights between the U.S. and the Pacific rim countries. During the yeras following the 1978 agreement with Korea, the U.S. proceeded to sign liberal agreements with Thailand, Taiwan, Singapore and the Phillipines. In exchange, the U.S. granted the four Pacific rim countries substantially greater rights than were granted to Korea, although Korea was the first Asian nation to sign a pro-competitive aviation agreement which granted U.S. carriers unrestricted market access and pricing flexibility. Moreover, Korea ranks the 2nd trading and tourist partner to the U.S. among the Pacific rim countries (Japan is the largest partner to the U.S. in terms of both trade and tourist market). In this paper such problems in the Korea-U.S. Air Services Agreement are analyzed in terms of historical perspective, U.S. Aviation policy, imbalance status in detail cases, discrimination to Korea comparing to other Asian countries, and theoretical application. And further it discusses current aviation issues between Korea and U.S. such as the ratification of 1980 MOU and various doing business issues of U.S. carriers in Korea. Finally, this paper concludes the analysis and suggests some directions to improve and rectify the problems and imbalance of U.S.-Korea Air Services Agreement in question.

• Journal of Embryo Transfer
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• v.24 no.4
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• pp.289-292
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• 2009

Mongolia has 80% livestock of total agriculture industry, 170,000 farms are engaged, 2,500,000 of cows that were beef and dairy cows are raised. Despite of Mongolian has great application with milk, there are not clear differences between cow and dairy cattle, and the production of milk is also low. But the milk suppliers are varied (horse, sheep, goat, etc), so that the total milk production is 500 thousand ton per year. It's really considerable to improve the breed of owing to many problems with big differences among milk qualities. For carrying out for first year project, artificial insemination project was operated with 3rd grade Holstein semen that were imported from S. Korea, and initiation and field training were also carried out through appropriate AI technique we developed for Mongolia environment. Local information research and MOU conclusion were done with professor D. Altangerel in May $10^{th}{\sim}13^{th}$, 2009, and development for AI technique and AI equipments were supplied for Mongolia breeding and natural environment in July $10^{th}{\sim}17^{th}$ in 2009. All cows were treated by synchronization for AI. To do this, $PGF_{2\alpha}$ injection were treated for luteal phase cow, if it wouldn't work, try again after 11 days. After confirmation of estrus, AI and AI training were carried out with sperm injection in the uterus or cervix by rectum-vagina method which is common worldwide, the most effective artificial insemination technique. If cows were return to next estrus cycle, second AI was carried out about approximately 21 days after artificial insemination. After 2 months, all cows not showing return estrus should be taken pregnancy test. Every pregnant cow will be cared thoroughly. Total 48 cows administrated by $PGF_{2\alpha}$ for synchronization and after 48 hours 45 cows (93.8%) showing estrus were detected and then artificial inseminate them within who 8 cows (27.8%) showed return estrus. Therefore, Using $PGF_2{\alpha}$ for synchronization is effective to use for Mongolia breeding conditions. There are possibility of base for food production after all, including increase of livestock production in Mongolia by improvement of breeding cow with AI and embryo transfer project.

• Journal of the Korean Association of Geographic Information Studies
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• v.22 no.3
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• pp.120-132
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• 2019

As a key infrastructure for positioning autonomous vehicles, HD maps are making efforts to equip autonomous vehicles and connect them with services worldwide. Global companies like Here and TomTom have contracted an agreement with three German automobile companies(BMW, Audi, Daimler) by establishing systems including from the production of HD maps to loading autonomous vehicles. Japan has organized a DMP(Dynamic Map Platform) by collaborating public and private section and performing establishment of HD map on private section-oriented. Korean companies related with autonomous vehicles are also cooperating with various companies such as vehicles, sensors and maps. But public and private sections are establishing HD maps respectively. Accordingly, Ministry of Land, Infrastructure and Transport implemented and signed memorandum for private and public cooperation in April 2019, Joint establishment council of HD map has launched in August 2019. This study performed domestic and foreign trend analysis about HD map and interviewed to related companies. And analyzed solutions for interactive cooperation of private and public section in HD map industry, purposed step-by-step strategy for operation and operation plan for joint establishment council of HD map.

• Proceedings of the Korea Water Resources Association Conference
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• 2023.05a
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• pp.441-441
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• 2023

통합물관리는 2000년 이전부터 필요성이 논의되다가 2019년 물관리기본법이 제정·시행되면서 수량, 수질, 수생태, 방재 등 분야의 물관리 통합이 단계적으로 추진되고 있다. 수자원장기종합계획, 물환경관리 기본계획, 국가물관리기본계획, 4대강별 유역물관리종합계획 등이 수립되거나 수립중에 있다. 2021년 6월에 수립된 국가물관리기본계획에서는 통합물관리 정량지표들을 물환경, 물이용, 물안전, 물산업, 거버넌스의 5개 분야로 구분하여 제시하였고, 4대강 유역물관리종합계획(안)에서는 국가기본계획의 지표들을 근간으로 유역별 특성을 고려한 정량지표를 설정하고 있다. 수자원장기종합계획부터 유역물관리종합계획까지 통합물관리 정량지표들의 변천 내용과 현황을 검토하였다. 수자원장기종합계획(2016~2020)의 전략과 목표는 "①맑은 물 공급: 급수보급율, 관망 복선화율, 댐 부족량 공급기준, 비상급수 피해인구, 스마트시티 음용률, 누수율 저감, 물 기본법 제정, ②홍수안전 기반구축: 하천기본계획, 하천정비, 수해금액, 도시하천 종합치수대책 수립, 국가하천 홍수예보 지점, 홍수예보시간 단축지점 비율, ③친수환경 조성: 하천유지유량, 하천 이용객, 어류종 및 철새종 증가, ④수자원산업 및 기술개발: 일자리, 수자원산업 육성제도, 해외수주액, 외국 MOU, 국제회의, 남북공유하천 협의"이었다. 물환경관리 기본계획(2016~2025)의 전략과 목표는 "①물순환 체계: 불투수면적률 25% 초과지역, ②깨끗한 물 확보: 상수원 수질달성, ③생태계 서비스 증진: 수생태계 건강성 달성, ④물환경 기반 조성: 산업폐수 유해물질 배출저감, 상수원 4대강 보의 총인 농도와 남조류 세포수, ⑤경제·문화적 가치 창출: 국민체감 만족도"이었다. 국가물관리기본계획에서는 "①물환경: 하천·호소 목표수질 달성률, 수생태계 건강성 B등급 이상 비율, ②물이용: 수돗물 만족률-직·간접 음용률, 노후 상수관로-하수관로 개량, ③물안전: 가뭄피해 인구, 홍수피해 인구-피해액, 댐안전성 강화율, ④물산업: 물관리 R&D 예산, 수량·수질·수생태 통합측정 중권역 비율, 물산업 매출액의 수출액 비중, 한국 주도 국제협력 의제, ⑤거버넌스: 미정"을 계획지표로 하였다. 유역종합계획에서는 4대강별로 거버넌스를 포함하여, "①물환경: 국가계획지표, 주요 상수원 수질, ②물이용: 노후 상하수관로 개량, 지방상수도 유수율, ③물안전: 한해 인구, 수해 인구-피해액, 하천정비율, ④물산업: 물산업 일자리 창출, ⑤거버넌스: 물포럼, 시민참여활동"을 정량지표로 고려하고 있다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2022.05a
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• pp.225-227
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• 2022

Now In Seoul, about 75,000 CCTVs are installed in 25 district offices. Each ward office in Seoul has built a control center for CCTV control and is building information such as people, vehicle types, license plate recognition and color classification into big data through 24-hour artificial intelligence intelligent image analysis. Seoul Metropolitan Government has signed MOUs with the Ministry of Land, Infrastructure and Transport, the National Police Agency, the Fire Service, the Ministry of Justice, and the military base to enable rapid response to emergency/emergency situations. In other words, we are building a smart city that is safe and can prevent disasters by providing CCTV images of each ward office. In this paper, the CCTV image is designed to extract the characteristics of the vehicle and personnel when an incident occurs through artificial intelligence, and based on this, predict the escape route and enable continuous tracking. It is designed so that the AI automatically selects and displays the CCTV image of the route. It is designed to expand the smart city integration platform by providing image information and extracted information to the adjacent ward office when the escape route of a person or vehicle related to an incident is expected to an area other than the relevant jurisdiction. This paper will contribute as basic data to the development of smart city integrated platform research.

• Nuclear Engineering and Technology
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• v.55 no.6
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• pp.2139-2146
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• 2023

During reactor operation, the divertor must withstand unprecedented simultaneous high heat fluxes and high-energy neutron irradiation. The extremely severe service environment of the divertor imposes a huge challenge to the bonding quality of divertor joints, i.e., the joints must withstand thermal, mechanical and neutron loads, as well as cyclic mode of operation. In this paper, potassium-doped tungsten (KW) is selected as the plasma facing material (PFM), oxygen-free copper (OFC) as the interlayer, oxide dispersion strengthened copper (ODS-Cu) alloy as the heat sink material, and reduced activation ferritic/martensitic (RAFM) steel as the structural material. In this study, a vacuum brazing technology is proposed and optimized to bond Cu and ODS-Cu alloy with the silver-free brazing material CuSnTi. The most appropriate brazing parameters are a brazing temperature of 940 ℃ and a holding time of 15 min. High-quality bonding interfaces have been successfully obtained by vacuum brazing technology, and the average shear strength of the as-obtained KW/Cu and ODS-Cu alloy joints is ~268 MPa. And a fabrication route for manufacturing the flat-type divertor target based on brazing technology is set. For evaluating the reliability of the fabrication technologies under the reactor relevant condition, the high heat flux test at 20 MW/m² for the as-manufactured flat-type KW/Cu/ODS-Cu/RAFM mockup is carried out by using the Electron-beam Material testing Scenario (EMS-60) with water cooling. This paper reports the improved vacuum brazing technology to connect Cu to ODS-Cu alloy and summarizes the production route, high heat flux (HHF) test, the pre and post non-destructive examination, and the surface results of the flat-type KW/Cu/ODS-Cu/RAFM mockup after the HHF test. The test results demonstrate that the mockup manufactured according to the fabrication route still have structural and interfacial integrity under cyclic high heat loads.

• Korean Journal of Radiology
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• v.23 no.10
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• pp.986-997
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• 2022

Objective: Whether metabolic redistribution occurs in patients with white matter hyperintensities (WMHs) on magnetic resonance imaging (MRI) is unknown. This study aimed 1) to propose a measure of the brain metabolic network for an individual patient and preliminarily apply it to identify impaired metabolic networks in patients with WMHs, and 2) to explore the clinical and imaging features of metabolic redistribution in patients with WMHs. Materials and Methods: This study included 50 patients with WMHs and 70 healthy controls (HCs) who underwent ¹⁸F-fluorodeoxyglucose-positron emission tomography/MRI. Various global property parameters according to graph theory and an individual parameter of brain metabolic network called "individual contribution index" were obtained. Parameter values were compared between the WMH and HC groups. The performance of the parameters in discriminating between the two groups was assessed using the area under the receiver operating characteristic curve (AUC). The correlation between the individual contribution index and Fazekas score was assessed, and the interaction between age and individual contribution index was determined. A generalized linear model was fitted with the individual contribution index as the dependent variable and the mean standardized uptake value (SUV_mean) of nodes in the whole-brain network or seven classic functional networks as independent variables to determine their association. Results: The means ± standard deviations of the individual contribution index were (0.697 ± 10.9) × 10^-3 and (0.0967 ± 0.0545) × 10^-3 in the WMH and HC groups, respectively (p < 0.001). The AUC of the individual contribution index was 0.864 (95% confidence interval, 0.785-0.943). A positive correlation was identified between the individual contribution index and the Fazekas scores in patients with WMHs (r = 0.57, p < 0.001). Age and individual contribution index demonstrated a significant interaction effect on the Fazekas score. A significant direct association was observed between the individual contribution index and the SUV_mean of the limbic network (p < 0.001). Conclusion: The individual contribution index may demonstrate the redistribution of the brain metabolic network in patients with WMHs.

• The Journal of Society for e-Business Studies
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• v.25 no.3
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• pp.41-61
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• 2020

China's rapid development and commercialization of high-tech technologies in the fourth industrial revolution has led to effective technology exchanges between Korean and Chinese firms becoming more important to Korea's mid-term and long-term industrial development. However, there is still a lack of empirical research on how technology exchanges between Korean and Chinese firms proceed and their effectiveness. In response, this study conducted a social network analysis based on text mining data of Korea-China business technology exchange and cooperation articles introduced in the news from 2018 to March 2020 on the current status and effects of Korea-China technology exchanges related to the fourth industrial revolution, and conducted a regression analysis how network centrality effect on the firm performance. According to the results, most of the Korean major electronic firms are actively networking with Chinese firms and institutions, showing high centrality in the centrality index. Korean telecommunication firms showed high betweenness centrality and subgraph centrality, and Korean Internet service providers and broadcasting contents firms showed high eigenvector centrality. In addition, Chinese firms showed higher betweenness centrality than Korean firms, and Chinese service firms showed higher closeness centrality than manufacturing firms. As a result of regression analysis, this network centrality had a positive effect on firm performance. To the best of our knowledge, this is the first to analyze the impact of the technical cooperation between Korean and Chinese firms under the fourth industrial revolution context. This study has theoretical implications that suggested the direction of social network analysis-based empirical research in global firm cooperation. Also, this study has practical implications that the guidelines for network analysis in setting the direction of technical cooperation between Korea and China by firms or governments.

• Journal of Arbitration Studies
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• v.24 no.4
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• pp.49-97
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• 2014

This study is about the availability of Chinese internal arbitration institutions by Korean invested companies. Generally, Chinese internal arbitration institutions lack independence from government. However, because parties seeking an arbitration award have ways to get neutrality from internal arbitration institutions that guarantee party autonomy, these Korean companies can use Chinese internal arbitration institutions to resolve disputes in China. Special attention should be given to the following. First, because Korean companies invested in China are legally in the same position as Chinese companies, unless foreign-related factors intervene, when disputes occur with Chinese companies or individuals, the disputes correspond to internal dispute, and when it comes to choosing the arbitration institution, these Korean companies must choose either a Chinese internal arbitration institution or foreign-related arbitration institution. Second, most Chinese internal arbitration institutions still lack independence from government, which can influence the fairness of arbitration in the future. Therefore, Korean companies invested in China should think about alternative ways to get a minimum impartiality in arbitration cases. Third, the parties are allowed to choose arbitration rules freely in Beijing, Xian, Chongqing, Guangzhou, and Hangzhou arbitration commissions. Therefore, in arbitration cases, the parties can get impartiality by choosing arbitrators according to the arbitration rules which they agree on, or by choosing partially modified arbitration rules of those arbitration commissions. Fourth, in order to get an impartial arbitration award from Chinese internal arbitration institutions in China, it is important for Korean lawyers or arbitration experts -- fluent in Chinese -- to be registered in the List of Arbitrators of Chinese internal arbitration institution by way of signing a MOU between the Korean Commercial Arbitration Board, or the Korean Association of Arbitration Studies and arbitration commissions such as those of Beijing, Xian, Chongqing, Guangzhou, and Hangzhou which comparatively do guarantee party autonomy. Fifth, because application of the preservation of property before application of arbitration is not approved in China, in practice, in order to preserve property before application of arbitration, it is best to file another suit in China based on other legal issue (e.g., tort) independent from the contract which an arbitration agreement is applied to. Sixth, in arbitration commissions which allow different agreement regarding arbitration procedures or arbitration rules, it is possible to choose a neutral arbitrator from a third country as a presiding arbitrator via UNCITRAL arbitration rules or ICC arbitration rules. Seventh, in the case of Chinese internal arbitral award, because the court reviews the substantive matters to decide the refusal of compulsory execution, the execution rate could be relatively lower than that of foreign-related cases. Therefore, when Korean companies invested in China use Chinese internal arbitration institution, they should endure low rate of execution. Eighth, considering the operational experiences of public policy on foreign-related arbitration awards so far, in cases of Chinese internal arbitration award, the possibility of cancellation of arbitral award or the possibility to refuse to execute the award due to public policy is thought to be higher than that of foreign arbitral awards. Ninth, even though a treaty on judicial assistance in civil and commercial matters has been signed between Korea and China, and it includes a provision on acknowledgement and enforcement of arbitral award, when trying to resolve disputes through Chinese internal arbitration institution, the treaty would not be a big help to resolve the disputes, because the disputes between Korean companies invested in China and the party in China are not subject to the treaty. Tenth, considering recent tendency of conciliation by the arbitral tribunal in China and the voluntary execution rate of the parties, the system of conciliation by the arbitral tribunal is expected to affect as a positive factor the Korean companies that use Chinese internal arbitration institution. Finally, when using online arbitration, arbitration fees can be reduced, and if the arbitration commissions guaranteeing party autonomy have online arbitration system, the possibility of getting impartial arbitration award through them is higher. Therefore, the use of online arbitration system is recommended.

• Journal of Korean Society of Forest Science
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• v.81 no.2
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• pp.191-199
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• 1992

This study was conducted to identify fungi causing canker dieback and melanconis disease of walnut trees (Juglans sinensis Dode) in Korea and clarify the pathogenicity and factors affecting the growth of these fungi. The causal fungi isolated from infected walnut stems and branches obtained from the commercial walnut orchards in Cheonwon, Goesan, Youngdong were identified as Botryosphaeria dothidea (Moug, ex Fries) Casati et de Notaris, Phoniopsis albobestita Fairman, Melanconis juglandis (Ellis et Everhart) Graves and their pathogenicity was confirmed by inoculation test. Temperature range for minimum growth of three fungi was 8 to $35^{\circ}C$ and the optimum temperature for mycelial growth of B. dothidea and P. albobestita ranged from 25 to $30^{\circ}C$, while the optimum temperature for M. juglandis ranged from 20 to $25^{\circ}C$. The optimum pH range for mycelial growth of P. albobestita was 4.0~5.0 and that for B. dothidea and P. juglandis 4.0~8.0. Glucose, sucrose, starch or maltose, as a carbon source, and histidine or potassium nitrate as a nitrogen source were more suitable compounds for growth. of B, dothidea, P. albobestita grew very well on the medium containing alanine and potassium nitrate as a nitrogen source, and utilized well glucose and sucrose as a carbon source. M. juglandis grew well on the medium containing glucose, and sucrose as a carbon source and utilized well potassium nitrate as a nitrogen source. The dieback and twig blight caused by P. albobestita were more severe than those by B. dothidea and M. juglandis at three locations investigated. Incidences of canker and dieback were more frequently observed in aged walnut trees than in young ones.