전류 비유 모델에 의한 초등학생의 전류 개념 변화 분석

유병길,강인석,김병철,남만희,박선희,소하연,윤희정,이영아,이하룡,전병문,정승호 부산교육대학교 과학교육연구소 2000 科學敎育硏究 Vol.25 No.-

There exists a major impediment to learning electricity which may illuminate why direct presentation of scientists' ideas is too aggressive a strategy. This impediment lies in thinking that electricity is used up and in envisaging the light bulb as a consumer. This view is based on a powerful idea which summarises much of our experience; it declares that 'things get used up', 'you cannot get something for nothing', and 'intuitive thinking'. To replace this view with scientific view, we made the analogy model. It is suggested that the analogy model is more effective in teaching electricity circuits than conventional teaching method.

골다공성 척추 압박골절에서 경피적 척추성형술 후 강화된 척추체에 의한 합병증 : Hammer Effect Preliminary Report

전은오,이상구,유찬종,김우경,박찬우,이언 The Korean Neurosurgical Society 2003 Journal of Korean neurosurgical society Vol.34 No.6

두개강내압 측정시 경막외 측정치와 뇌실내 측정치와의 비교분석

유도성,김달수,조경석,박춘근,강준기 대한신경외과학회 1999 Journal of Korean neurosurgical society Vol.28 No.6

부인암 환자에서 발견되는 대장 선종의 특징

전정현,정성애,김성은,이종수,남승현,신정은,문혜성,김승철,유권 梨花女子大學校 醫科大學 醫科學硏究所 2003 EMJ (Ewha medical journal) Vol.26 No.1

연구목적 : 2형 Lynch 증후군에 대한 관심이 높아지면서 부인과 종양 환자에게 대장암과 대상 선종의 검사 필요성이 언급되어지고 있다. 본 연구에서는 본원의 부인과 종양 환자에서 병기 결정을 위해 시행되어지는 S상 결장경 검사에서 발견되는 대상 선종의 특징을 알아보고자 하였다. 방법 : 1993년 9월부터 2001년 3월까지 본원에서 부인과 종양을 진단받고 대장 증상 없이 병기 결정을 위해 S상 결장경검사를 시행한 187명을 대상으로 하였고(자궁경부암 139명, 난소암 35명, 자궁 내막암 13명) 정상대조군으로는 대장 증상 없이 건강 검진 목적으로 대장경 검사를 시행한 58명을 대상으로 하였다. 결과 : 부인과 종양 환자 187명 중 21명에서 대장 선종이 발견되었고(11.2%) 다발성 선종이 있어 모두 26예의 선종이 관찰되었다. 정상 대조군 58명에서는 3명에서 선종이 발견되었고(5.2%) 다발성 선종은 없었다. 부인과 종양 중 자궁 내막암 환자군에서 선종의 빈도는 38.5%로 정상 대조군에 비해 통계학적으로 유의하게 많았다. 진행성 선종의 빈도도 자궁 경부암 환자 12.5%, 난소암 환자 25.5%, 정상 대조군 33.3%에 비해 자궁 내막암 환자 83.5%로 유의하게 많았다. 부인과 종양의 선종 위치는 직장이 23.1%, S상결장이 76.9%였다. 결론 : 부인과 종양 환자의 대장 선종 빈도는 정상 대조군에 비해 많은 경향을 보였으나 통계학적 의의는 없었다. 그러나 자궁 내막암 환자군에서는 다른 부인과 종양 환자나 정상 대조군에 비해 유의하게 많은 선종과 진행성 선종의 빈도를 부였다. 따라서 부인과 종양 환자에게 대장경 검사를 통한 대장 선종 유무 검사가 필요하리라 생각된다. Objectives : In Lynch syndrome Ⅱ, colon cancer was associated with endometrial and ovarian cancer. The aim of this study was an evaluation for the clinicopathologic characteristics of rectosigmoid adenomas on preoperative sigmoidoscopy in gynecologic cancer patients. Methods : A total 187 gynecologic cancer patients(139 cervical, 35 ovarian, 13 endometrial cancer) and 58 normal controls were reviewed sigmoidscopic finding and pathologic reports retrospectively from September 1993 to March 2001. Results : The mean age of gynecologic cancer patients was 54(38-82) year-old and normal controls was 50(20-68) year-old. Total 26 adenomas were in 21 patients(11.2%) and 3 adenomas were in 3 normal controls(5.2%). The incidence of adenomas was 9.4% in cervical cancer, 8.6% in ovarian cancer and 38.5% in endometrial cancer. Multiple adenomas were in 5 gynecologic cancer patients and 0 normal controls. The incidence of advanced adenoma was 12.5% in cervical cancer, 25.5% in ovarian cancer, 83.5% in endometrial cancer and 33.3% in normal controls. The location of adenoma was 23.1% in rectum and 76.9% in sigmoid colon. Conclusion : The incidence of adenomas and multiple adenomas were higher in gynecologic cancer patients than normal controls but not significantly. The incidence of advanced adenoma and adenomas were significantly higher in endometrial cancer than normal controls. Colonoscopic evaluation of whole colon will be recommanded in gynecologic cancer than sigmoidoscopy.

묘지 조성사업지의 비탈면 보호공법에 관한 연구(Ⅰ) : 강릉시 시범 공설묘지 조성사업을 중심으로

전근우,유남재,차두송,이명종,박완근,한상균 강원대학교 삼림과학연구소 2000 Journal of Forest Science Vol.16 No.-

강릉시 시범 공설묘지 조성사업은 경사 30˚ 의 표고차가 심한 산지를 절 · 성토하여 계단식 묘역단을 조성하는 공사로 수직고 15m이상의 대절토 및 성토부가 산재하고 있다. 특히 묘역단장후 주변 유입수 및 표면 유출수에 의한 비탈면 붕괴, 묘역단 유실 등의 피해가 발생할 경우 보수 또는 보강이 사실상 어려운 실정이며, 사회적 여론으로 확대될 가능성이 크므로 비탈면 보호에 필요한 녹화공법을 검토하였다. 구체적인 연구내용으로는 설계도면 및 현장답사를 통한 문제 비탈면 추출, 비탈면의 물리적 특성과 식생의 생육상황 파악, 비탈면 주변부의 식생조사와 유용식생 선발, 비탈면의 토양조건 분석 및 비탈면 토사의 기본물성 조사 등이며, 이를 기초로 하여 비탈면 현황 및 문제점을 파악하고, 그 대안을 제시하였다. The construction of a public cemetery in Kangnung city includes terraced graveyard with cutting or banking in mountain which has severe altitude differences with a slope of 30˚. Therefore, there are scattered cutting and banking sections with vertical height more than 15m. Especially, if the slope failure or the loss of a graveyard happens after graveyard establishment due to surface flow and inflow around, it is difficult to repair, causing serious public censure. Accordingly. revegetation works were examined that need protection of slope. The specific content of the study was the selection of slopes requiring special care through blueprint and field investigation the measurement of the physical property of slope and the situation of vegetative growth, the investigation of vegetation in slopes and the selection of vegetation, and the analysis of soil condition of slopes and the physical condition of slope sediment. On the basis of investigations some alternatives were proposed.Key words: public cemetery, slope protection works, revegetation works

외상성 뇌경막외 및 뇌경막하 혈종에서 혈종제거술 후 발생한 원발 병소 반대측 혈종에 대한 임상적 고찰

전은오,이상구,전영일,유찬종,김영보,박철완 최신의학사 2003 最新醫學 Vol.46 No.9-10

전격성 경과를 취한 만성 호산구성 폐렴 환자 1예

윤호상,진춘조,유광하,이상엽,이수인,정상만,김선두,이순제,이길도,전혜정 건국대학교 의과학연구소 2000 건국의과학학술지 Vol.10 No.-

Chronic eosinophilic pneumonia(CEP) is a rare disease of unknown etiology characterized by chronic infiltration of the lung with eosinophils. It presents with profound systemic symptoms comprising fever, night sweats, weight loss, dyspnea and blood eosinophilia with nonsegmental air-space consolidation confined to the outer third of the lung, the "photographic negative of pulmonary edema". Histopathologic features of chronic eosinophilic pneumonia are intraalveolar and interstitial infiltrations with eosinophils, histiocytes, giant cells, scattered lymphocytes and plasma cells. Glucocorticoid therapy cause prompt resolution of symptoms as well as disappearans of blood eosinophils, elevated serum Ig E levels and the roentgenographic lesions. Infrequent radiographic findings include nodular infiltrates, consolidations, cavitations, atelectasis and pleural effusions. Deaths from CEP although rare, have been reported, but the majorities of CEP have benign courses and do not need a therapy with ventilator. We report a case of chronic eosinophilic pneumonia, which had a sudden course associated with diffuse pneumonic consolidations on the both lung and bilateral pleural effusion.

초고층 공동주택의 음향특성에 따른 주관적 반응분석

이상우,유호천,차상곤 대한건축학회 2005 대한건축학회논문집 Vol.21 No.1

Apartment housing is a widely-spread type in Korean housing market Nevertheless, It has caused serious problems such as traditional community corruption, unsafe structure, defects and litigation from noise Noise, especially in concrete structure for apartment housing, is hardly controlled In proper to prevent sound transmission between upper and lower families with existing system In foreign countries, there are floating floor systems to enhance the noise control performance in multi-family housing Therefore, this study alms to analyze subjective responses on sound characteristics in high-rise residential buildings For the Subjective evaluation on noise experienced high-rise residential buildings, it Images of two high-rise residential buildings Questionnaire surveys were conducted by five university students of architectural department and collected subjective response data using questionnaire were statistically analyzed by SPSS

한글 문서 구조 분석에 관한 연구

우성준,김광호,유명춘,하진영 강원대학교 정보통신연구소 2008 정보통신논문지 Vol.12 No.-

Although information technology has been developed fast, large amount of machine printed document images are not properly handled due to immature document layout analysis techniques. Previous research has focused on character recognition itself to improve character recognition accuracy. Recently, however, some efforts are made to analyze complex document layout automatically. In this paper, we propose document layout analysis and understanding method for various Hangul document images. Skew detection is performed using projection profile and connected component layout information. Top-down and bottom-up methods are combined to analyze document layout. After text region and non-text region determination, table is further processed to extract row, column, and cell position. We got very high performance for skew correction, zone detection, and table processig from experiments with various Hangul document images.

H9c2 심근 세포주에서 외인성 nitric oxide가 허혈에 의한 세포 독성에 미치는 영향

정성구,장현용,김명천,고영관,정주호,배영미,박원서,김대중,유영민,김성수,임성빈 대한응급의학회 2001 대한응급의학회지 Vol.12 No.4

Background: Nitric oxide(NO) is known to have protective effects on an ischemic heart and to exert triggering effects on ischemic preconditioning. However, the effects of NO during the ischemic period have not been investigated. To investigate the role of exogenous nitric oxide in a model of ischemic heart cell death, we studied the effects of ischemic preconditioning and ischemia in a normal and an ischemic buffer. Methods: Rat cardiac myoblast cells(H9c2) were cultured in a normal and an ischemic buffered medium. For the ischemic culture of heart cells, the cells were cultured in a dessicator with GasPak for 5 hrs. In ischemic preconditioning, the cells were pretreated with ischemic buffer for 5 min and then perfused with normal medium for 30 min. For the measurement of the cytotoxicity, a MTT(3-4-Sdimethylthiazol-2-yl-2,5-diphenyl tetrazolium bromide) assay was performed. A DAPI(4',6-diamidino-2-phenylindole dihydrochloride) staining procedure and a flow cytometry analysis were performed to confirm apoptotic cell death by ischemia. Results: Cell viability, as determined by using a MTT assay, showed that the preconditioned group treated with NO showed more cell death than with the not-preconditioned groups in both normal and ischemic buffers. But, In normal medium and not-preconditioned groups, NO showed protective effect according to the concentrations(100,1000μM) . No treatment with NO produced the different results. In normal medium, the protective effect of ischemic preconditioning was demonstrated, but no protective effect of ischemic preconditioning could be seen in the case of the ischemic buffer. The DAPI staining and flow cytometry analysis of heart cells showed characteristic apoptotic features. Conclusion: NO added in the ischemic phase had deterious effects on heart cells. Ischemic preconditioning was more harmful than ischemia alone. The toxicity of the cells was characteristic apoptosis.