Mo 화학기상증착에 있어서 불순물 농도에 미치는 증착조건의 영향

배상석,서성교,홍은식,김승모,조미정,한혜정,이두성,김세훈,민석홍 국립7개대학공동논문집간행위원회 2001 공업기술연구 Vol.1 No.-

The thermal decomposition process of Mo(CO)_6 on chemical vapor deposition was investigated by analyzing the effects of deposition temperature, pressure, and reaction gas on the phase change of deposited films. Mo_2C was deposited at or below 350℃ due to the incompleteness of thermal decomposition of Mo(CO)_6, but Mo films was successfully deposited at 400℃ or higher temperatures. The variation of deposition pressure did not change the dependence of decomposition process on deposition temperature. The activation energy of surface reaction was 5.8 ㎉/mole.

만성 승모판 패쇄부전증 환자에서의 안지오텐신 전환효소 억제제의 장기 투여 효과

김대희,이명묵,이해영,조현재,박승정,서재빈,서정원,양한모,윤창환,조상호,이준희,김용진,김명아,손대원,오병희,박영배 대한순환기학회 2004 Korean Circulation Journal Vol.34 No.2

경비행기의 비행 시험 절차에 관한 연구

이정모,은희봉 한국항공운항학회 1997 한국항공운항학회지 Vol.5 No.1

FAR 23, AC 23-8, 그리고 Order 8110.7을 이용하여 경비행기의 비행 시험 절차에 대한 연구를 수행하였다. 본 연구에서는 창공-91의 비행 시험을 통한 경험을 바탕으로 형식증명을 위한 주요 절차에 대한 연구를 수행하였다. 본 연구는 소형 비행기의 제작자, 항공관련 기술자, 비행 시험 기술자, 비행 시험 조종사, 그리고 관련 정부 관계자들에게 비행 시험에 관련된 기준을 이해하도록 하기 위해 수행된 연구이다. 본 연구에서 비행 시험 방법과 절차는 주로 소형 비행기의 형식증명에 관련된 것으로 관련자들에게 큰 도움이 될 것이다. FIight Test procedures are studied from FAR 23, AC 23-8, and Order 8110.7. We have been studied the main procedures for the type certification of light airplane from the experiences of Chang Gong 91. ?'his study is intended as a reference for small airplane manufacturers, engineers, flight test engineers, and engineering flight test pilots, including government personnel. This study covers flight test items of interest during type certification. These methods and procedures are promulgated, in the interest of standardization, for use during normal category airplane flight test certification activities.

신규 생리활성물질 개발을 위해 분리한 방선균주의 특성

이모래,김오정,최은화,정동선 서울여자대학교 자연과학연구소 2004 자연과학연구논문집 Vol.16 No.-

Actinomycetes were isolated from soil at Kangdong area in Seoul to screen bioactive metabolites. One of strains having antibacterial activity was selected and characterized. The isolated strain was identified as Streptomyces sp. on the basis of its cultural, morphological and physiological properties. This strain produced antibacterial substances in culture broth after 7days cultivation, and its productivity continued to increase for 14 days. The metabolites exhibited potent antibacterial activities to various bacterial strains including multidrug-resistant strain of Staphylococcus aureus.

Rieger syndrome : 증례보고 A CASE REPORT

이홍모,김정욱,장기택,이상훈,한세현,김종철 大韓小兒齒科學會 2003 대한소아치과학회지 Vol.30 No.4

Rieger syndrome은 눈의 전안방 기형과 치아결손을 특징으로 하는 희귀한 유전질환으로 두 개안면 이상과 체성기형을 동반하기도 한다. Rieger syndrome은 상염색체 우선유전(autosomal dominant inheritance)되며, 발생빈도는 약 200,000분의 1이고, Paired-like homeodomain transcription factor2(PITX2)의 변이가 이 질환과 연관이 있는 것으로 보고되고 있다. 본 증례는 Rieger syndrome으로 진단 받은 4세 7개월 된 여아에 대한 것으로, 양안에 다동공증과 후태생환을 보이고, 측모두부계측에서 상악골 열성장이 나타났으며, 상악유측절치와 더불어 다수의 영구치 결손이 방사선 상에서 관찰되었다. 이 증례를 통하여 Rieger syndrome 환아의 구강 및 두 개안면의 소견을 관찰하고, 관련 문헌을 고찰하여 다소의 지견을 얻었기에 보고하는 바이다. Rieger syndrome is a rare, autosomal dominant gentic disorder characterized by malformation of the anterior chamber of the eye(goniodysgenesis) coincident with hypodontia. It may also be accompanied by a spectrum of dental, craniofacial and somatic anomalies. Mutations in paired-like homeodomain transcription factor2(PITX2) are associated with the syndrome, and its frequency in the general population has been estimated to be 1 : 200.000. In the present case, the patient, 4 year 7 month-old female, had posterior embryotoxon and polycoria. The maxilla was retrusive in cephalometric radiography. She had congenital missing on #52, #62 and some tooth germs of permanent tooth were not detected in panoramic radiography. The purpose of this paper is to report the dental and craniofacial findings and review the pertinent literature through this case.

操縱士의 錯覺과 安全飛行에 關한 硏究 : 着陸時 目測誤判을 中心으로 Visual illusion on the final approach

李晶模,崔鎰奎 한국항공대학교 1981 論文集 Vol.19 No.-

In the various factors affecting to the pilot on the final approach pahse in relation to the visual approach the visual illusion, possibly, is the most hazardous one to accomplish a desired landing. since the occuring of visual illusion is basically due to subconscious of the pilot, even a comparably experienced one, who judges the approach path from the apparent matters, it is hardly expected that some pilot is completely oyt of visual illusion during his visual approach to any airport. This pape is to deal with serching the possible way to minimize the tendency of the visual illuson of the pilot excuting visual approach for the various types of airport and weather phenomena.

認知心理學 : 情報處理的 接近方法 An Information Processing Approach

李政模 서울대학교 의과대학 정신과학교실 1983 精神醫學報 Vol.7 No.4

9세 소아에서 나타난 비구개낭의 치험례 : CASE REPORT

이상호,모경희,박종휘,이난영,이창섭,윤정훈 大韓小兒齒科學會 2003 대한소아치과학회지 Vol.30 No.3

비구개낭은 절치관낭이라고도 불리우며 가장 흔한 비치성낭이다. 발육성으로 비구개관내에서 태생 상피잔사가 증식하여 낭변성을 일으킴으로써 발생한다. 비구개낭은 악골낭의 약 1.7-11.9%를 차지하며 남자에게서 약 3배 정도 호발한다. 연령분포는 매우 광범위하나 대개 40대에서 60대 사이에서 발견되며 10세 이전에 발견되는 경우는 매우 드물다. 비구개낭을 위한 적절한 치료는 적출이며 비구개신경에 손상을 가하지 않도록 해야 한다. 낭이 커서 치아의 생활력에 영향을 주거나 비구강누공이나 구강 상악동 누공을 형성할 우려가 있을 경우에는 조대술로 치료할 수 있다. 본 증례의 환아는 구개부의 무통성 종창을 주소로 내원하여 임상 및 방사선 검사를 실시한 결과 소아에서 매우 드물게 나타나는 비구개낭으로 방사선사진에 32×25.5mm크기를 나타내었으며, 매우 팽창되어 순측 피질골판을 관통하고 상순소대 하방과 전정부위까지 종창되어 있었다. 병소와 인접한 상악 4전치 치근은 심하게 이개되어 있었다. 낭의 크기가 매우 커서 조대술을 시행하였으며 obturator를 장착하고 있으며 향후 계속 관찰이 요한다. Nasopalatine duct cyst(NPDC) is the most common non-odontogenic cyst in the oral area and is thought to be originated from the epithelial remnants of the nasopalatine duct. Many etiologic factors have been proposed for the NPDC; trauma to the region during mastication of from ill fitting dentures, bacterial infection, and spontanious proliferation of tissue. The majority of cases are seen between the ages of 40th and 60th and it is rare in children. Surgical enucleation is the recommended treatment for NPDC, usually under general anaesthesia. A 9-year-old boy was refered to the chosun university pedodontics clinic that this child who has anterior palatal swelling is in routine check. In this case, swelling was presented at the bottom of the anterior nasal cavity as well as in the labial aspect of the upper alveolar ridge. It was so large that we treated it by marsupialization and obturator was put. This patient is on the continuous observation. We treated the child who had NPDC by marsupialization, and got the successful results such as rapid bone regeneration and the consistency of incisor vitality.

e-Learning 환경에서의 협력학습을 위한 학습모형 및 학습행위요소 개발

이인숙,임정훈,성은모,진성희 한국컴퓨터교육학회 2006 컴퓨터교육학회 논문지 Vol.9 No.2

객체에 근거한 선호도 제약 중심 스케줄링 언어와 성능향상 기법

이기철,문정모,송성헌 한국경영과학회 1995 經營 科學 Vol.12 No.2

For a complex scheduling system like time table construction, its optimal solution, if exists, is hard to obtain. In this paper, the scheduling environment is reasonably confined as where objects have their own events competing for better slots on boards, and objects have their own board slot preferences and belong to one or more classes of the society which globally constrains them. Here, two phase method is suggested, where the first phase is human-like preference dirven and the second phase is for fine tuning by considering all the factors given. Designed and implemented in our system HI-SCHED are dynamic object switching, temporal-constraint-driven intelligent backtracking, case-based revisions, object-based approach, and so on. Some satisfaction degrees are also defined to measure the usefulness of our method. In addition, look-ahead dynamic object switching is considered, and additional global constraints are introduced and processed. A simple scheme is also used to verify the usefulness of the post processing scheme.