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오성은(Seong-Eun Oh),조영삼(Young-Sam Cho),손동우(Dongwoo Sohn),임세영(Seyoung Im) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.10
Finite element methods have been widely used for computational mechanics. However, they have some difficulties in simulating crack propagation due to the occurrence of discontinuities from crack propagation. One of the difficulties is the implementation of remeshing procedures which is arisen because a fine mesh around the moving crack tip is needed. This study proposes a new numerical scheme composed of crack elements and quadtree refinement to analyze the crack branching problems as an application of crack propagation problems. The crack elements, which are extended from the moving least square-based variable-node elements, represent the discontinuity of crack faces and the crack-tip singularity. In addition, we suggest quadtree refinement using crack elements to minimize the remeshing procedures in the crack branching problems.
표준필수특허 보유자의 금지청구권 행사와 시장지배적 지위 남용행위에 관한 EU 사례 분석
오성은 ( Oh Seong-eun ) 한국경쟁법학회 2016 競爭法硏究 Vol.33 No.-
Seeking injunctions on the basis of a standard essential patents(SEPs) for which a commitment to license under FRAND conditions may constitute an abuse of dominance and have serious negative effects on competition. The SSO’s IPR’policies often require members to make FRAND commitment which is to license SEPs on fair, reasonable, and nondiscriminatory terms. The implementation of FRAND licensing policies, so widely adopted by SSOs operating in the ICT industry, seems to be at the root of all disputes. It is arguable that SSOs themselves should be doing more to refine and clarify their policies. The difficulties faced by some SSOs(especially ETSI - one of three standardization organizations recognized by the European Commission) in their recent attempts to discuss the use of injunctions with members, reveal that broad consensus is unlikely. The European Commission’s focus has shifted to the use of injunctions on the basis of FRAND-encumbered SEPs. The decisions of Motorola and Samsung cases clearly state that seeking an injunction against an unwilling licensee is objectively justified under Article 102 TFEU. All the specific circumstances of the case need to be take into account in order to establish whether the potential licensee is actually willing to enter into FRAND license. Motorola decision has the merit of having addressed anticompetitive concerns arising from the questionable application by German judges of the Orange Book case. However, in fact, it leaves unanswered the question of the compatibility of SEP based injunctions with Art. 102 TFEU in circumstances in which the alleged infringer does not make an offer like Apple’s second Orange book offer. On July, 2015, the ECJ issued a judgement that clarifies at which point the proprietor of a SEP violates TFEU by bringing an action for a prohibition injunction. The judgement provides important guidelines for the assessment of the duties of SEP holders and alleged infringers of their patents. The European Commission decisions in Motorola and Samsung and the CJEU’s preliminary ruling in the Huawei case provide useful guidance but have still several issues. In any future action, the Korea competition agency and court’s goals will be to protect the benefits of standard-setting while minimising any anti-competitive risks.
올바른 유튜브 사용 용어 및 구성 요소에 대한 델파이 연구
장성호,오성은,신정미,신성만,Jang, Sung-Ho,Oh, Seong-Eun,Shin, Jung-Mi,Shin, Sung-Man 한국디지털정책학회 2021 디지털융복합연구 Vol.19 No.6
본 연구의 목적은 유튜브의 바른 사용과 관련된 용어 및 구성 요소를 살펴보는 것이다. 총 11명의 패널을 대상으로 델파이 설문을 실시하였고, 결과는 다음과 같다. 첫째, 향후 유튜브 사용 형태가 어떻게 변할지 추측한 결과, 현재보다 다양하고 활발히 사용될 것이나 가짜 뉴스나 중독적 사용 등의 부적응적인 문제가 발생할 것이라는 합의가 도출되었다. 둘째, 올바른/올바르지 않은 유튜브 사용에 대한 용어로는 '적응적 사용'과 '부적응적 사용'을 도출하였다. 셋째, 올바른 유튜브 사용의 구성 요소로는 정보 및 콘텐츠 선별 능력, 자기조절 능력, 정보 습득 및 전달 능력, 사용 동기 및 욕구 파악, 사용 시간 조절 능력, 파급효과에 대한 고려성이라는 합의가 도출되었다. 끝으로 본 연구의 의의와 한계점을 논하였다. The purpose of this study is to examine the terms and components related to the proper use of YouTube. The Delphi was conducted on 11 panels and the results are as follows. First, as a result of examining how the use of YouTube will change in the future, it is agreed that it will be used more actively and more diverse than now, but that maladaptive problems such as fake news and addictive use will occur. Second, the terminology of proper/improper use of Youtube was derived as 'adaptive use' and 'maladaptive use'. Third, as a result of the components of adaptive use of YouTube, it is that were 'Information and content sorting ability', 'Self-regulation ability', 'Information acquisition and delivery ability', 'Understanding motivation and desire to use', 'Time-of-use control ability', 'Consideration of ripple effect'. Finally, the implications and limitations of this study were discussed.
한국해군 함정 통신장비 안테나의 통합마스트 탑재 가능성
이종학,오성원,라영은,이건민,이종성,박태용,Lee, Jong-Hak,Oh, Seong-Won,Ra, Young-Eun,Lee, Keon-Min,Lee, Jong-Sung,Park, Tae-Yong 한국정보통신학회 2020 한국정보통신학회논문지 Vol.24 No.5
마스트는 해군 함정에서 가장 높은 구조물로, 장거리 통신 및 레이더 가시거리(LOS, Line Of Sight) 확보를 위해 각종 통신기와 레이더 안테나들이 설치된다. 통합마스트는 레이더 반사 면적(RCS, Radar Cross Section)을 줄일 수 있어 함 생존성 향상을 기대할 수 있기 때문에 최근 미국, 유럽 등 해외에서 건조되는 함정에 적용되고 있는 비율이 늘고 있다. 본 논문에서는 해외에서 통합마스트를 적용할 경우 통신 안테나의 통합 현황 및 안테나 개발 사례를 분석하였다. 그리고 한국 해군의 운용 통신망을 분석하여 통합마스트를 적용할 경우 통신기 안테나 형태에 따른 함정 RCS 영향, 다양한 대역의 통신기 안테나의 통합마스트 통합 가능성과 고려사항을 제시하였다. The mast is the highest structure in a naval ship, and various communication and radar antennas are installed to achieve long-range communications and line of sight. The U.S. and European navy currently are adopting integrated mast to their new ships, as it can reduce the Radar Cross Section(RCS) of the new ships and thus improve survivability of the ship. In this paper, when other navies adopt integrated masts on new ships, types of antennas, according to the cases that the antennas are integrated on the integrated mast or not, are analyzed. Also the types of antennas and transmission techniques for the radio communication equipments of the Korean Navy are analyzed in various frequency bands. For adopting an integrated mast on Korean new ships, the effects of the ship RCS according to the types of antennas, the possibility of integration the antennas and the integrated mast and considerations were presented.
전력시장에서의 공정거래법 집행에 관한 연구 -EU 경쟁법 집행사례의 시사점을 중심으로-
이호영 ( Ho Young Lee ),오성은 ( Seong Eun Oh ) 한국경쟁법학회 2013 競爭法硏究 Vol.27 No.-
Electricity is an essential for everyday human lives and it is a fundamental mission of a modern nation to ensure stable and reliable supply of electricity on reasonable price. However, the electric power industry of Korea is suffering from chronicle shortages of supply and soaring wholesale price of electric power and securing stable electric power supply and an efficient electricity market has emerged again as a major national agenda. The electric power industry of Korea had been monopolized by the vertically integrated state-run Korea Electric Power Corporation (KEPCO) for decades. In early 2000`s, the Korean Government, affected by the international trend toward liberalization of and introduction of competition to electric power industries, launched restructuring of the industry in order to establish a competitive electricity market on both wholesale and retail level. However, the restructuring came to a deadlock after KEPCO`s electricity generation unit had been split into six subsidiaries. Incomplete introduction of competition and lack of adequate competition law enforcement in the Korean electric power industry resulted in very unstable and inefficient electric power markets. For establishing an efficient and reliable electric power market, the reform of the electric power market should be fully accomplished and rigorous competition law enforcement in the market should follow. In light of the European experience of competition policy initiatives and competition law enforcement in the energy sector, competition law enforcement in the Korean electric power market should focus upon preventing abuses of market dominance such as capacity withdrawals by market dominant generators and long-term electricity supply contracts which have effect of foreclosing new entrants from newly opened electricity market. Depending on the network unbundling model chosen through the reform process, securing third party access to the networks on fair and nondiscriminatory terms is another key issue which competition law enforcement in electric power markets should pay attention to.
스마트워크 활성화를 위한 버추얼 클러스터(Virtual Cluster)형 협업 플랫폼 개발
이각범(Kark-Bum Lee),오성은(Seong-Eun Oh),황지연(Ji-Yeun Hwang) 한국IT서비스학회 2013 한국IT서비스학회지 Vol.12 No.2
As global competition of enterprises heats up recently, there is a growing the need to introduce business knowledge platform. Many enterprises work with other partners in a variety of situations and collaboration has emerged as new competitiveness of them. Collaboration improves the performance of members, and besides it has an important bearing on innovation, result, and increased productivity of enterprise Lots of businesses, locally and abroad. extend the environment of col laboration and try to share business contents efficiently. In addition, they look into ways of invigorating col laboration by providing community tools. Corporations and Governments around the world are pushing smart work to respond effectively to this paradigm change. Smart work provides many types of collaboration and raises the productivity. Various infrastructures should be constructed for activating smart work. Most of all, core technology is to be developed. Virtual Cluster is the space of collaboration corresponding to change in business paradigm. In overseas policy of Virtual Cluster has been already enforced as an alternative to geographical cluster. The establishment and development of col laboration platform through Virtual Cluster can contribute to business competitiveness by smart work.