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김진철,최성봉,김정훈,Kim, Jin-Cheol,Choe, Seong-Bong,Kim, Jeong-Hun 통신위성우주산업연구회 2003 Joint Conference on Satellite Communications Vol.2003 No.-
2008 년에 발사예정인 국내최초 정지궤도 복합위성인 통신해양기상위성은 한국항공우주연구원에서 시스템 및 본체, 기상/해양탑재체, 지상국 개발을 담당하고 있다. 통신해양기상위성에 대한 시스템 및 본체의 개념설계와 기술요구사항을 수립하였다. 수립된 시스템요구사항(안)은 통신/해양/기상의 다목적임무를 수행하는 통신해양기상위성 설계의 초안을 제공하였다. 위성버스서브시스템 및 지상국에 대하여 개념설계 및 기술요구사항에 관한 분석을 수행하였다. 본 선행연구의 결과는 향후 통신해양기상위성의 시스템 초기 설계에 중요한 기초자료가 될 것이다. The first multi-functional geosynchronous satellite in Korea, COMS(Communication, Ocean and Meteorological Satellite), is planned to launch in 2008. KARI, the leading organization of COMS program, is charged with the satellite systems, bus, meteorological/ocean sensor, and ground station development. In the initial phase of the COMS program, a conceptual design of the satellite system and bus is achieved as well as the establishment of technical requirements. The set-up of the system requirements(draft) of the COMS is outlined the realize the multi-missions of communication, ocean and meteorology. Such as satellite bus subsystems and ground station systems, the conceptual design and technical requirement analysis are performed for those space and ground segments, the conceptual design and technical requirement analysis are performed for those space and ground segments, Results obtained from these preliminary studies of the COMS program play an important role in the initial system design of the COMS.
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김진철,함돈일,Jin Chul Kim,Don Il Ham 대한안과학회 2009 대한안과학회지 Vol.50 No.1
Purpose: To investigate the clinical characteristics and treatment of intermediate uveitis under new diagnostic standards. Methods: Medical records of patients diagnosed with pars planitis or intermediate uveitis were followed for more than 6 months, and retrospectively reviewed. Results: A total of 90 patients and 117 eyes were enrolled in the study. The mean age was 40.1 years, and the mean follow-up period was 43.0 months. Thirty percent of cases were bilateral. The most common initial symptom was decreased visual acuity. Snowbank was detected in 39.3%, snowballs in 15.4%, vitritis in 96.6%, and vasculitis in 56.4%. Common complications includedcystoid macular edema (57.3%), cataracts (43.6%), and epiretinal membrane (36.8%). Therapies included topical steroids (82.9% of cases), posterior sub-Tenon steroid injection (45.3% of cases), systemic steroid administration (67.8% of cases), and immunosuppressants (28.7% of cases). Vitrectomy was performed in 11.1% of patients due to complications such as epiretinal membrane and traction retinal detachment. The mean initial and final visual acuities were 0.67 and 0.74, respectively. Conclusions: The patients in this study experienced various courses of symptoms that required different treatment plans. Future investigations may corroborate these results.
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비공식적 행정행위로서의 No-action Letter에 관한 연구
김진철 한국상사법학회 2008 商事法硏究 Vol.27 No.3
In this paper, No-action Letter system intends to the prevention of a violation and the evasion or the reduction of a legal danger. And because the process is systematized for the interests of relative persons and for the reduction of administrative affairs by a procedural clearness, ① in terms of prevention of violation act and evasion of legal danger, the system will be able to prevent from misappropriation of injustice exclusion of shareholder proposal, and ② it will be able to consider the interests of shareholders and company by a procedural clearness, and also ③ because No-action Letter is a kind of administrative procedure, it may produce an outcome quickly and simply. That is, where No-action Letter system is used as preview system, it has merit which reviews simply and quickly. To introduce No-action Letter as a preview system, however, it is essential to secure professionalism of review agency as precondition. Therefore it must be prerequisite to put review division which is composed of legal expert like SEC in United States. But, In the case of our country, it may be insufficient to charge application of No-action Letter in structure of the staffs of the Financial Supervisory Commission etc. If we introduce it after solving this preceding subject and investigating other points, we can establish it as an useful system in practice. In this paper, No-action Letter system intends to the prevention of a violation and the evasion or the reduction of a legal danger. And because the process is systematized for the interests of relative persons and for the reduction of administrative affairs by a procedural clearness, ① in terms of prevention of violation act and evasion of legal danger, the system will be able to prevent from misappropriation of injustice exclusion of shareholder proposal, and ② it will be able to consider the interests of shareholders and company by a procedural clearness, and also ③ because No-action Letter is a kind of administrative procedure, it may produce an outcome quickly and simply. That is, where No-action Letter system is used as preview system, it has merit which reviews simply and quickly. To introduce No-action Letter as a preview system, however, it is essential to secure professionalism of review agency as precondition. Therefore it must be prerequisite to put review division which is composed of legal expert like SEC in United States. But, In the case of our country, it may be insufficient to charge application of No-action Letter in structure of the staffs of the Financial Supervisory Commission etc. If we introduce it after solving this preceding subject and investigating other points, we can establish it as an useful system in practice.
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표면연마와 측정구의 크기가 치과용 색조가이드 탭의 색상에 미치는 영향
김진철,유빈,안진수,임범순,이용근 대한치과재료학회 2008 대한치과재료학회지 Vol.35 No.3
분광광도계를 이용하여 측정한 치과용 색조가이드 탭의 색상은 탭 표면의 굴곡정도, 적층 효과, 그리고 분광광도계의 측정구 크기에 따라 차이가 생긴다. 본 연구의 목적은 색상가이드 탭 (Vitapan 3D Master)의 표면을 편평하게 연마한 후 색상 좌표값의 변화를 측정하고, 분광광도계의 측정구 크기가 색조탭의 색상에 어떤 영향을 주는지 평가하기 위한 것이다. 색조탭의 색상을 2 종의 분광광도계를 이용하여 탭의 표면 연마 전후에 2 가지 크기의 측정구 (3 x 8-mm 직사각형, 3-mm 원형)로 측정하였다. 표면 연마후 색상, 명도, 채도 그리고 CIE a* 와 b*의 변화를 측정하였다. 표면 연마와 측정구의 크기가 색상 좌표값에 미치는 영향을 2원 분산분석법을 이용하여 분석하였다 (a=0.05). 연마 후 색상의 변화에 대한 측정구 크기의 영향은 pairedt-test (a=0.05)를 이용하여 분석하였다. 색조탭의 표면을 연마한 후 측정한 명도, 채도, CIE a* 및 b* 값은 측정구의 크기와 관계없이 연마전보다 높은 값을 보였다. 표면연마와 측정구의 크기는 색상 좌표값에 영향을 주었으며, 이 둘 간에는 유의한 상관관계가 있었다. (p<0.01). 연마후의 색상 변화는 측정구의 크기에 의하여 유의한 영향을 받았다 (p<0.01). 연마 전, 후 색조탭의 색상 좌표값은 유의한 상관관계를 보였다 (r2 = 0.239~0.993, p<0.01). 향후 곡면체에 대한 분광복사 측정법 또는 비접촉 측정법이 깊이 있게 연구되어야 할 것으로 보인다.
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