습진성 피부질환에 대한 Hexomilone^(�) 치료의 임상연구

이대성,조광윤,허동,김형옥,김정원 최신의학사 1984 最新醫學 Vol.27 No.11

완전차동용량형 압력센서를 위한 적분형 C-V 변환기

이대성,박효덕,김규철 대한전자공학회 2002 電子工學會論文誌-SD (Semiconductor and devices) Vol.39 No.9

An integral C-V converter is proposed to solve the nonlinearity problem of capacitive pressure sensors. The integral C-V converter consists of a switched-capacitor integrator and a switched-capacitor differential amplifier. It converts the sensor capacitance change which is inversely proportional to an applied pressure into a linear voltage output. Various PSPICE simulations prove that the convertor has excellent characteristics, such as low nonlinearity less than 0.01%/FS and low sensitivity to parallel offset capacitance and parasitic capacitance for the displacement range of sensor diaphragm set to 0 ∼ 90% of the initial distance between the electrodes in the simulation. We also show that the offset compensation and the gain trimming are easily achieved with the integral C-V converter. 본 논문에서는 용량형 압력센서의 비선형성 문제를 해결하기 위한 적분형 C-V 변환기를 제안하였다. 이 변환기는 스위치 커패시터 적분기와 스위치 커패시터 차동증폭기로 구성되어 있으며 인가된 압력에 반비례하는 센서용량을 전압으로 변환하여 선형적으로 출력한다. 제안된 적분형 C-V 변환기는 PSPICE 시뮬레이션에서 초기 전극간격의 90%에 해당하는 큰 변위에 대해서 0.01%/FS 이하의 매우 낮은 비선형도와 오프셋용량 및 기생용량에 둔감한 우수한 특성을 보였다. 또한 센서신호처리의 필수기능인 오프셋 보정 및 이득조정이 적분형 C-V 변환기에서 용이하게 구현됨을 보였다.

韓·美貿易과 通商摩擦에 관한 硏究

李大成 건국대학교 사회과학대학 1987 社會科學論叢 Vol.2 No.-

沃川地向斜帶의 火成活動과 地構造的 解析 : - especially referred to ophiolite determination -

이대성 연세대학교 대학원 1980 延世論叢 Vol.17 No.1

The Ogcheon Zone which trends northeasterly, in the middle part of South Korea, parallel with the regional tectonics of this part of Asia was structuarly defined classifing back deep, inner ridge, intra-deep, outer ridge and fore-deep in the order from the northwest toward the southeast in an acrossed traction of the zone (Fig. 2). The Ogcheon zone is an orogenic geosynclinal belt which consists mainly of thick sequences of marin and terrestrial sediments ranging in age Precambrian to Cretaceous. The zone is in contact with migmatitic plutons of Early Jurassic along its southeast margin and batholitic granodiorite plutons of Late Jurassic to Early Cretaceous which correspond to inner ridge. Within both of these marginal units there is a zonal distribution of irregular-shaped granodiorite to granite stocks, acidic dikes and paleovolcanics of Middle Jurassic to Late Cretaceous which corresponds to the outer ridge. In the middle part of the Ogcheon zone, a metamorphosed intermediate to basic extrusives and intrusives, and dunitenodule bearing basalt of Triassic to Early Jurassic which are exposed exclusively with green sohists and cherty pelagic and slaty sediments are aligned along a great thrust fault of NW-NNE direction that separated the Ogcheon zone into two segments; the eugeosynclinal in southwest side and miogeosynclinal in northeast side. These segments haute entirly different structural patterns (Fig. 16) and the fault zone is geographically traced from north to south as follows; Chungju-Hwanggangri-Mungyong-Cheongsan -Annam. Present study focused to the petrography and petrochemical property of the basic to ultrabasic rock fregments to determine ophiolitic suite, and examined their geotectonic significance in the Ogcheon zone. The exposures of the basic rocks are divided into innerbelt and outer belt; the former are mostly massive and intrusive of basalt and hornblende grabbro, whereas, the latter are mostly schistose hornblendite to amphibolite which intervene structurally fregmented argillaceous sedimentary rocks. The chemical data of the basic rocks are plotted on diagrams of AFM, MgO-CaO-Al2-O3, Sr-87Sr/86Sr, An-Ab-Or, CaO- (Na2O+K2O), FeO/MgO-SiO2 FeO/MgO-TiO2, FeO/Mg-FeO and (Na2O +O+ K2O) -Na2O/K2O. The data points in these diagrams indicate that the basic rocks were originally abyssal tholeiitic and the association of these basic rocks with the pelagic sediments in an ophiolitic suite. Consequently, the author infered an obductive movement of ice eugeosynclinal mass onto the miogeosyclinal mass and resulted the thrust fault prior to granite intrusions of Late Jurassic age in this zone.

스포츠이벤트의 대테러 위기관리에 관한 연구

이대성,오현득,여호근 한국스포츠엔터테인먼트법학회 2010 스포츠와 법 Vol.13 No.1

People use their spare time in many different ways, and one of the popular activities is sports events. Sports events have a long history, but recently, they are diversifying in terms of scale and form, with the opening of different styles such as mega-sports. Ultimately, sports events should be a place and opportunity where the hosts, players, executives and participants enjoy sports to feel joy, happiness, fun and energy and contribute to peace, but the problem is that crimes of terror executed by uncertain forces have turned events or places of events into places of fear and shock. Therefore, this study comparatively analyzed the characteristics of police, military and fire fighter groups to practically reveal awareness on counter-terrorism crisis management of sports events. First, as a result of verifying the study hypothesis, there was a significant difference only in counteractive stage between the crisis management of the different groups, and fire fighters highly evaluated the counteractive stage compared to police or military. Next, there was a partially significant difference between crisis management according to age, experience, counter-terrorism education experience and mobilization experience of subjects. First, those who participated 4 or more times in counter-terrorism related education reacted higher than those who participated less than 4 times in all stages except for the restoration stage. Second, those with 1 to 2 times experience in counter-terrorism mobilization responded highly in the stage of ease compare to those with no experience of 3 to 4 times experience. Third, those who were 50 years of age or older had a higher awareness in ease, preparation and counteractive stages compared to other age groups. Fourth, those who received education up to middle school had a higher awareness in the ease and preparation stages compared to those with different levels of education. A t-test was carried out on one sample group, and the results showed the need for efforts such as education and training, information sharing on counter-terrorism, a prevention plan, division of duties and clear rules in the case of a terror. 개인들의 여가선용 형태는 매우 다양한 형태로 표출될 수 있는데, 이러한 여가활동 중의 한 가지가 바로 스포츠이벤트라고 할 수 있다. 물론 스포츠이벤트는 오랜 역사 속에서 형성되어 온 것이기도 하겠지만, 최근 들어 메가 스포츠 등과 같이 다양한 형태로 개최되면서 그 규모와 형태 또한 다양화를 초래하고 있다. 결국 스포츠이벤트에 참가하는 주최자, 선수 및 임원, 참가자들이 해당 스포츠이벤트를 즐김으로서 삶에 대한 행복, 기쁨, 즐거움과 활력소를 느끼면서 평화를 기여하는 장소와 기회가 되어야 함에도 불특정 세력에 의하여 자행된 테러범죄로 인해 그 행사 혹은 행사 장소가 공포와 충격을 안겨주는 곳이 되어서는 곤란하다는 점이다. 이에 본 연구는 스포츠이벤트 행사에 관한 대테러 위기관리 인식을 실증적으로 규명하기 위하여 경찰, 군, 소방 응답집단과 응답자의 특성에 따른 차이 분석을 실시하였다. 우선 연구가설에 대한 검증을 실시한 결과, 응답집단에 따른 위기관리의 차이분석에서는 대응단계에 대해서만이 유의한 차이가 나타났는데, 소방관은 경찰관 및 군인보다도 대응단계에 대해서 높은 평가를 하였다. 다음으로 응답자의 연령, 학력, 대테러 교육 참가 경험과 출동 경험에 따른 위기관리의 차이분석에서는 부분적으로 유의한 차이가 나타났다. 첫째, 대테러 관련 교육경험이 4회 이상인 경우는 4회 미만인 경우보다도 복구단계를 제외한 모든 단계에서 높은 반응을 보였다. 둘째, 대테러 관련 출동경험이 1-2회 인 경우는 0회 및 3-4회의 경우보다도 완화단계에 대해서 높은 응답을 하였다. 셋째, 연령이 50대 이상인 경우는 완화, 준비, 대응 단계에서 다른 연령보다도 이에 대한 인식을 높게 지니고 있는 것으로 나타났다. 넷째, 학력이 중졸이 경우는 완화와 준비단계에 대해서 다른 학력자들보다도 이에 대한 인식을 높게 보였다. 다음으로 일표본에 대한 T-검증을 실시한 결과 교육훈련 실시의 필요성과 국제적인 대테러 관련 정보 공유 및 사전 예방책 마련과 국내 스포츠이벤트 관련 대테러 발생 시 업무분장의 명확한 규정화 및 임무부여 등의 노력이 절실히 필요함을 알 수 있다.

직무분석 이해를 통한 취업경쟁력 제고방안에 관한 연구

이대성,최기원,박지희 한국취업진로학회 2012 한국취업진로학회 학술대회 Vol.2012 No.-

鬱陵島의 地質

李大聲 서울대학교 1954 서울대학교 論文集 Vol.1 No.-

The wirter have prepared this preliminary report on the results of microscopic observation of the samples which he had collected during the 9 days of field survey in Ulnung Island, from Sept. 19, 1952 to Sept. 25, 1952. The writer intends to make a more detail survey on the istand on another occasion. The Ulnung Island is one of the isolated islands on the Japan Sea with two dependant islands, Chuk Do and Kwan Um Do, and, when Namyangdong the main Ⅵllege of this island is considered as a representatⅣe point, is located on 37°30'N. lat. and 130°50'E. long.. This island is consisted of alkali rocks, belonging to the Japan Sea Alkali-rock Petrographic ProⅥnce together with Paektoo Mountain, Kilchoo-Myonchon Area and Chejoo Island, Korea and Oki Island, Japan, where the calcalkali rock are distributed in general. The rocks which are found in this island are olⅣin basalt, aggromerate, hornblend trachyte, biotite trachyte aegirinaugite trachyte, aegirin augite phonolith, trachyandesitic trachyte, Yonchon trachyandesite, dykes and volcanic ejectas. The trachytes contain sanidines and the aegirin augite phonolith composed of phenocrysts of aegirin augite, aegirin, barkeⅥkite, common augite, magnetite, nepheline, sanidin, orthoclase and sanidine which covered albite, and groundmass. The volcanic rocks of this island have been extruded during the period, from early Oligocene to Pleistocene, in the order of basalt, trachytes, trachyandesite. The extrusion was accompanied by a huge explesion, and the depression of the apical part of the trachytic rock body has formed a depression caldera and also created the Naridong Basin. The cone shaped Albong which is located in the northwest of Naridong Basin, consists of trachyandesite and several kinds of volcanic ejectas. The ridge line connected in the order of peaks, 05m, 900m, 910m,983m, 967m, 813m and 482m which distributed around Naridong Basin falls under an somma and, it is appeared to form a double volcano relating with before-mentioned Allong cone.

고유진동형의 Wavelet 변환에 의한 선체 구조의 균열 유무 및 위치진단

이대성,조대승 부산대학교 생산기술연구소 2000 生産技術硏究所論文集 Vol.59 No.-

대형 구조물의 결함 유무 및 결함 발생시의 위치 진단은 이들 구조물와 중대 손상으로 인한 인명 및 경제적 손실 예방에 매우 중요하다. 본 논문에서는 보유추 구조물에 결함이 존재할 경우 구조물의 모드 형상에 특이점으로 반영된다는 것에 착안하여, 결함이 존재하는 보유추 구조물의 고유진동협의 특이점을 웨이블렛 변환을 이용하여 찾는 방법에 대한 연구를 수행하였다. 본 연구에서 적용한 결함 진단 방법의 타당성과 유용성은 두께 변화 또는 균열을 갖는 양단 자유 보에 대한 수치해석과 실험 및 균열을 갖는 선체 구조물에 대한 수치해석을 수행하여 검토하였다 The early damage detection of large structures is very important to prevent the disaster due to its global failure. In this paper, a damage detection method of the beam-analogy structure based on the wavelet transformation of mode shape is presented. This can effectively detect the singularity of mode shape caused to the inconsistency of bending moment and shear force at the damaged part using the discrete wavelet and its inverse transforms. To investigate the validity and the applicability of the presented damage detection method, numerical simulation and experiment are carried out for the idealized beam and the real ship structures.

급성 간염 후에 발생된 재생불량빈혈 1례

이대성,이정현,박재선,김미향 고신대학교의과대학 2008 고신대학교 의과대학 학술지 Vol.23 No.3

Aplastic anemia following acute hepatitis with or without acute hepatic failure is an uncommon and known to have a poor prognosis. We experienced a case of aplastic anemia following acute hepatic failure in a 13 year-old boy. He had been admitted because of jaundice and lethargy for 2 weeks and clinical findings of acute fulminant hepatitis. Serum studies for antibodies and antigens related to hepatitis A, B, C viruses and cytomegalovirus, Ebstein-Barr virus, and, parvovirus B19 were negative. He had been recovered and discharged. He was readmitted because of lethargy and stuporous mentality 5 months later. Laboratory finding showed pancytopenia in peripheral blood smear and hypocellularity of all hematopoietic elements in bone marrow biopsy. Patient had been treated by s teroid and oxymetholone for a month before he died of sepsis

국립국어원 공공언어 통합 지원 사업 - 공공언어 통합 지원 시스템을 중심으로 -

이대성 외솔회 2021 나라사랑 Vol.130 No.-