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고정된 우선순위의 실시간 시스템에서 주기와 비주기 태스크의 동적 전압 조절 기법에 관한 연구
최성권(Sung-Kwon Choi),임재호(Jae-Ho Lim),김석윤(Seok-Yoon Kim) 대한전기학회 2010 정보 및 제어 심포지엄 논문집 Vol.2010 No.4
The Dynamic Voltage Scaling is a technique to reduce the energy consumption as adjusting the frequency clock and supply voltage dynamically. Tasks could be divided to periodic-tasks and aperiodic-tasks. Periodic-tasks apply DVS technique easily because we can know period, execution time and deadline of each task. However, it is hard to use DVS technique in aperiodic tasks because tasks arrive sporadic. In this paper, we propose a new efficient DVS algorithm using the deferrable server for aperiodic-tasks and existing DVS algorithm based on workload. Experimental results show that the proposed algorithm obtains energy consumption reduction about 8% more than the existing algorithm in mixed-tasks systems.
최성권(Song Kwon Choi),박동춘(Dong Chun Park),최윤경(Yoon Kyung Choi),이지은(Ji Eun Lee),이수선(Soo Sun Lee),박윤희(Youn Hee Park),유영옥(Young Oak Lew),김대훈(Dae Hoon Kim),남궁성은(Sung Kwen Namkoong) 대한산부인과학회 2001 Obstetrics & Gynecology Science Vol.44 No.12
N/A Acardia is a very rare congenital anomaly occurring in less than 1 in 35,000 deliveries. Acardiac parabiotic twin has been reported only in multiple, monochronic pregnancies. This anomalous fetus is sustained in utero by parasitic anastomoses to the circulation of its usually normal co-twin and is therefore not compatible with extrauterine survival. A case of an acardiac parabiotic twin is described, and the literature concerning the incidence, classification and etiology of acardiac is reviewed.
과도한 치은 노출을 보이는 성인 과개교합 환자에서 교정용 미니 임플랜트를 활용한 상악 절치 압하
최성권(Sung-Kwon Choi) 대한치과교정학회 2021 대한치과교정학회 임상저널 Vol.11 No.3
Deep bite is one of the challenging malocclusions to correct, and it appears as a combination of dentoalveolar and skeletal characteristics. In patients with skeletal deep bite, excessive overbite can be reduced through clockwise rotation of the mandible. However, this type of rotation may worsen the sagittal problems and smile esthetics. Therefore, in patients with deep bite and excessive gingival display, detailed analysis and treatment planning is required for aesthetically optimal results. A 20-year-old man with a chief complaint of excessive gingival display when smiling showed deep bite and skeletal Class II relationship. The patient was treated for 5 months with intrusion of maxillary incisors using two orthodontic mini-implants placed on the interdental space between the lateral incisor and canine. After obtaining a proper overbite, comprehensive orthodontic treatment was initiated and was followed by total arch distalization of the maxillary dentition to improve the canine and molar relationship. After 28 months of treatment, good occlusal relationship and satisfactory smile esthetics were achieved.
최성권 ( Sung Kwon Choi ) 전북대학교 사회과학연구소 2009 지역과 세계 Vol.33 No.2
북핵문제에 대한 러시아의 정책을 올바르게 이해하기 위해서는 국제정치의 현실주의 시각과 자유주의 시각 그리고 이를 통하여 과거 초강대국이었으나, 소련의 붕괴와 함께 세력이 약화된 러시아가 북핵문제에 대하여 취하는 정책을 전지구적 차원과 동북아 지역적 차원, 한반도 지역차원으로 나누어서 살펴본다. 북핵문제를 전략적으로 살펴보면, 러시아는 자국의 국가안보, 경제발전, 지전략에서 규정한 국가이익에 따라 강대국과 위협국에 대하여 편승, 균형, 견제정책과 경제적 상호의존과 대화와 다자주의적 협력안보를 추구한다. 국제적 차원에서는 미국과의 함께 불확산체제를 유지하는데 전략적으로 많은 부분에서 동조하는 편승전략을 채택하고 있다. 그 이유는 불확산 체제(NPT)는 핵강대국의 이점을 유지시켜주는 러시아의 중요한 이익이면서 다른 미사일기술 통제체제와 전략무기감축 조약, MD방지 등과 연관되어 있기 때문이다. 다음으로 지역적 차원에서 러시아가 갖고 있는 북핵문제에 대한 기본적인 입장은 동북아의 안보문제를 다룰 다자 안보협의체의 창설과, 중국과 함께 하는 다극체제를 유지하는 세력균형체제이다. 한반도 차원에서는 남-북한에 대하여 적국이나 우방을 구분하지 않는 균형적 관계로 북핵문제의 해결에 있어서 군사적인 제재보다는 안전의 상호보장과 경제적 협력을 통해 관계를 증진시킨다는 실용주의적 전략이다. North Korean nuclear problem is not only just security issue, but also even more international affairs. So Russian policy for correct understand, We need to see a view of realism and liberalism in international politics. And this paper analyses global, North East regional level and the Korean Peninsula level of Russian policy. A sight of strategical factors in North Korean nuclear problem, Russia seeks for bandwagoning, balancing, checks and economic interdependence, cooperation security in national security, economic development and geopolitics of Russia. Russian policy stands bandwagoning in many relations with America in global level. Because Non-Proliferation of Nuclear Weapons is the vertical interest by Russia, and it relates others agreements-MTCR, START. North East regional level of Russian policy over North Korean nuclear problem decline to get balance of power, to keep multilateral system and to make multinational security organization in North East. Russian policy in the Korean Peninsula level over North Korean nuclear problem is practical strategy in order to get more interdependence, security, economic relations between South and North Korea.