용담호 진안천 유역의 비점오염유출특성1

최용호 ( Yong-ho Choi ),정용훈 ( Yong-hoon Jeong ),곽동희 ( Dong-heui Kwak ) 한국물환경학회 2021 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2021 No.-

용담호 진안천 유역의 비점오염유출특성

최용호 ( Yong-ho Choi ),정용훈 ( Yong-hoon Jeong ),곽동희 ( Dong-heui Kwak ) 한국물환경학회 2021 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2021 No.-

정준상관 행렬도와 군집분석을 응용한 KLPGA 선수의 기술과 경기성적요인에 대한 연관성 분석

최태훈,최용석,Choi, Tae-Hoon,Choi, Yong-Seok 한국통계학회 2008 응용통계연구 Vol.21 No.3

정준상관 행렬도(canonical correlation biplot)는 정준상관분석에서 두 변수 집단에 의해서 측정된 다변량 자료에서 변수 집단 간의 관계와 개체들의 관계를 탐색하기 위한 2차원 그림이다. 이는 일반적으로 최용석 (2006, 1장)의 한 변수 집단에 의한 행렬자료에 대한 일반적인 행렬도를 두 변수 집단에 의한 행렬자료로 확장한 것으로 볼 수 있다. 최근에 Choi와 Kim (2008)은 개체들이 많은 대용량 자료에서 행렬도의 해석상 힘든 문제점을 지적하고 이를 극복하는 데 군집분석을 활용하는 방법을 제시하고 있다. 일반적인 행렬도에서 발생하는 대용량 자료에 대한문제는 정준상관 행렬도에서도 동일하게 발생하곤 한다. 본 연구에서는 2006년도 KLPGA 선수 중 상금 순위 상위 50명을 대상으로 정준상관 행렬도를 통해 기술요인변수군(평균 퍼팅수. 그린 적중율, 파 세이브율, 파 브레이크율)과 경기성적요인변수군(상금, 평균 타수)간의 관련성을 살펴보고 군집분석을 활용하여 각 선수들의 군집을 시도하려한다. Canonical correlation biplot is 2-dimensional plot for investigating the relationship between two sets of variables and the relationship between observations and variables in canonical correlation analysis graphically. In general, biplot is useful for giving a graphical description of the data. However, this general biplot and also canonical correlation biplot do not give some concise interpretations between variables and observations when the number of observations are large. Recently, for overcoming this problem, Choi and Kim (2008) suggested a method to interpret the biplot analysis by applying the K-means clustering analysis. Therefore, in this study, we will apply their method for investigating the relationship between skill and competition score factors of KLPGA players using canonical correlation biplot and cluster analysis.

T 세포활성항원 CTLA-4의 기능에 관한 연구 : T 세포에서 표적세포 살해능과 CTLA-4 발현과의 연관성 Target Cytotoxicity of T Cell Correlates with CTLA-4 Production

노만택,조양자,김용식,최용,조보현,최장원,정용훈 大韓免疫學會 1996 大韓免疫學會誌 Vol.18 No.4

CTLA-4, a T cell activation antigen and a homologue of CD28, was originally identified as a gene by a series of reverse genetic approaches. While CD28 molecule has been characterized well as a stimulator of T-cell function via enhanced lymphokines production and stablilization of those mRNA, most of the functions of CTLA-4 remain unknown. It has been widely accepted that CTLA-4 functions as an immune suppressor which is down-regualting the function of CD28. We previously showed that 34 KD form of this antigen mainly expressed CD8+ subset, a cytotoxic or suppressor, of activated peripheral blood lymphocyte. Based on our previous finding this study was conducted to further characterize immunological function of CTLA-4 especially in terms of involvement of this molecule in T-cell effector function mediating target cell cytotoxicity. 4 human T cell clones with different target cytotoxicities were employed in this study. NBL46 (CD4+) and NBL77 (CD8+) were cytotoxic and NBL32 (CD4+) and NBL58 (CD 8+) were non-cytotoxic to target LBF cell in target cell chromium release assay. And in Western blot assay 34 kD antigen was detected in NBL46 (CD4+) and NBL77 (CD8+) clones but not in NBL32 (CD4+) and NBL58 (CD8+) clones. It was summarized that expression of the CTLA-4 antigen was associated with cytotoxicity but not with subset phenotypes of T cells. In conclusion CD8+ T subset of PHA-stimulated PBL was major and only CTLA-4 producer and this molecule was induced during mid to late stage of T cell activation. The cytotoxicity of T cell clones to its target cell was directly correlated with its CTLA-4 production and vice versa. And it was highly suggested that primary function of CTLA-4 may involved in T cell effector function which mediates target cell killing.

교육대학교 학생 자치활동에 관한 연구

최예종,성기훈,장용규 서울교육대학교 학생생활연구소 2000 學生生活硏究 Vol.26 No.-

본 연구는 교육대학생의 자치활동 실태와 학생 의견을 바탕으로 교육대학에서 지향해야 할 자치활동의 방향을 모색하고, 건전한 학생활동에 대한 지원 및 지도 방안을 제시하는 데 목적이 있다. 본 연구를 위해 수집된 자료는 SPSS WIN 9.0 통계 패키지 프로그램을 사용하여 분석하였다. 학생 자치활동의 실태를 알아보기 위한 주요 통계 분석 기법은 빈도분석이었다. 서울교육대학교 학생들의 자치활동에 대한 의식 및 실태를 분석한 연구 결과, 첫째, 학과 자치활동의 경우, 응답자의 82.9%가 학과 회의나 행사에서의 학생 참여도에 대하여 부정적인 생각을 갖고 있고, 학과 자치활동시 가장 큰 애로사항은 학생들의 관심 부족이라고 생각하는 것으로 나타났다. 또한, 가장 활성화되어야 할 학과 자치활동으로 MT·수학여행·축제 등의 다양한 학과 행사를 꼽고 있었다. 둘째, 총학생회 자치활동의 경우, 총학생회에서 주도하는 집회나 행사에 대한 학생들의 참여도는 매우 낮은 것으로 조사되었으며, 앞으로 활성화되어야 할 총학생회 활동에 대해서는, 축제· 체육대회· 신입생 O.T. 등과 같은 연례적인 대규모의 이벤트성 행사에 많은 관심을 보여 주었다. 일반적으로 학생들은 총학생회의 역할이 주로 학생들의 의견을 대변하는 것으로 인식하고 있었으며, 총학생회와 학교 당국의 관계에 대한 학생들의 인식은 상당히 부정적으로 나타났다. 셋째, 동아리 자치활동의 경우, 상당수의 학생들은 동아리 활동시 적절한 공간이나 예산의 부족 등으로 어려움을 겪는 것으로 나타났다. 응답자들은 대체로(55.1%) 지도교수제의 필요성을 인식하고 있었으나, 동아리 지도교수의 역할 및 참여 정도에 대해서는 다소 아쉬움을 나타내고 있었다. 넷째, 축제 활동의 경우, 상당수의 학생들이 축제 행사에 방관적이거나 소극적으로 참여하는 것으로 조사되었으며, 적극적으로 축제에 참여하는 비율은 25% 정도인 것으로 나타났다. 또한, 공연이나 오락행사 등이 축제 때 보다 활성화되어야 한다고 생각하는 것으로 나타났으며, 축제때 주점 등을 통한 음주 문화를 개선하자는 의견도 있었다. 이상과 같은 연구 결과들을 바탕으로 교육대학교 학생 자치활동의 활성화 방안을 제시하면 다음과 같다. 첫째, 학생 자치활동의 최대 관건인 학생들의 관심을 적극 유도하기 위한 다양한 유인체계를 갖추어야 할 것이다. 둘째, 생산적인 학생 자치활동의 활성화를 위해, 교육대학생의 정체성을 고양하거나 최근 많은 학생들의 관심을 모으고 있는 학생들의 권익 보호와 복지 증진을 도모할 수 있는 독특한 자치활동 프로그램들을 강화해야 할 것이다. 셋째, 학생 자치활동에 대한 교수들의 적극적인 관심과 함께, 학교 당국과 학생 자치기구 간의 관계 개선 노력이 더욱 활발히 전개되어야 할 것이다. The purpose of this study was to investigate students' opinions of their activities in Seoul National University of Education and to suggest some propositions for the development. The data were collected from 321 students, and frequency distribution and percent rate methods have been adopted. The conclusions are as follows: (1) Department students association activities Few students have taken part in the activities. They showed the opinion that membership training, trip for educational purposes, and festival should be strongly activized. (2) General students association activities Fewer students have taken part in the activities. They wanted that athletic meeting and freshman orientation are improved. (3) Circle activities There have been found many difficulties in the activity space and the budget lack. They requested more positive role of the advisor. (4) Performance activities Most students participated passively in the activities. They hoped that more music programs and recreation programs should be developed. In order to develop students' activities, students positive participation, extension of programs, and agreeable relationship between the university authorities and the general student association are needed.

양극산화와 절연파괴로 형성한 인산칼슘 함유 티타늄 산화피막의 특성

최원호,이용승,김동환,권용훈,배태성 大韓齒科器材學會 2003 대한치과재료학회지 Vol.30 No.1

This study was performed to investigate the surface properties of electrochemically oxidized pure titanium by anodic spark deposition technique. Titanium plates of 10×10×1 ㎜ were polished sequentially from # 300 to # 1,000 emery paper. They were ultrasonically washed in ethyl alcohol and acetone for 5 min and dried in a desiccator. Titanium plates and titanium screw implants were anodized in an electrolytic solution that was dissolved calcium and phosphate in water. The electrolytic voltage was set in the range of 190-340 V and the current density was 30 ㎃/㎠. The surface oxide film was characterized by X-ray deffractometer(XRD), scanning electron microscope(SEM) and X-ray photoemission spectroscopy(XPS). The main crystal structure of the titanium oxide was anatase type as analyzed with thin-film X-ray diffractometery. The diameter of micropores increased with increasing the spark forming voltage. The porous coatings showed the growth of cell structure and more compact texture with increasing the spark forming voltage. Microcracks were examined in the coating formed at voltage of 340 V. Ca/P ratio in coatings was increased with increasing the voltage.

농부가 아닌 환자에서 발생한 긴털가루진드기(Tyrophagus Putrescentiae)에 의한 기관지천식 1례

최대로,김형수,고창옥,김희선,윤호성,박용범,김상훈,이재영 대한천식 및 알레르기학회 2004 천식 및 알레르기 Vol.24 No.1

Storage mites are believed one of the most important allergens in farmers and rural regions. Tyrophagus putrescenitiae, belonging to storage mites, is found not only within storehouses but also in the house dust, and the third most common mites following Dematophagoides farinae and Dermatophagoides pteronyssnus in house dust in Korea. The sensitization rate to Trophagus putrescentiae was reported as high as that of house dust mite in patients visiting the allergy clinic in large cities in Korea. We experienced a 69-year-old man who had suffered from dyspnea, wheezing, and coughing for 10 years. He retired from the teaching profession, and had lived in a large city. Deajeon. The skin prick test showed a positive reaction to Tyrophagus putrescentiae and negative reactions to house dust mites. The bronchial challenge test with Tyrophagus putrescentiae showed late asthmatic reaction. We confirmed a Tyrophagus putrescentiae induced asthma in non occupational setting. (J Asthma Allergy Clin Immunol 24 : 141-5, 2004)

알레르기성 자반증 환자에서 캡슐내시경으로 공장궤양을 진단한 1예

이용강,오탁근,최아라,이지훈,김미나,홍성필 고신대학교의과대학 2012 고신대학교 의과대학 학술지 Vol.27 No.1

Henoch-Schönlein purpura (HSP) is the most common form of systemic vasculitis in children. Palpable purpura, arthralgia, arthritis, abdominal pain and renal involvement are the major clinical manifestations. Gastrointestinal involvement is related with abdominal pain and bleeding. We described a 71 year-old female experienced acute exacerbation of HSP presented with gastrointestinal bleeding. She was hospitalized for hematemesis and diagnosed duodenitis by esophagogastroduonenoscopy (EGD). Duodenitis was improved at EGD checked in 7 days. She still complained of melena and abdominal pain. There were no abnormal findings at sigmoidoscopy. Jejunal ulcer and purpura were diagnosed by capsule endoscopy. Symptoms were relieved after administration of systemic steroid. But she needed renal replacement therapy for 3 months. Small bowel ulcer diagnosed by capsule endoscopy in patients with HSP was rarely described in Korean literature. This case suggests that capsule endoscopy have a role in diagnosis of small bowel ulcer and its severity in HSP with gastrointestinal symptom.

佛敎의 唯識思想과 分析精神治療 理論의 比較 試論

崔焄東,李符永 大韓神經精神醫學會 1986 신경정신의학 Vol.25 No.1

While there are many articles on the Son(Zen) Buddhism ad its psychotherapeutic implications in the Eastern and western countries, Yogacara Buddhism was rarely studied in the aspect of psychotherapy. The authors reviewed Yogacara theories and compared them with the theories of analytical psychotherapy, hoping to find out the possibilities to incorporate the Yogacara theories into the theories of psychotherapy. ?? (Store-consciousness) is a consciousness which is the foundation of all acts of thought. The impressions of the whole of past experience are stored up in it. ?? is comparable to the psychological concept of the unconscious. Especially it is very similar to the Jungian unconsciousness which has both personal and collective components. The process of turning avidya(ignorance) into vidya(enlightenment) is comparable to the insight-oriented psychotherapy. Therefore Yogacara Buddism might provide the expanding knowledge and the scope of psychotherapy and the philosophical basis of psychotherapists.

암처리 엽수와 기간이 들깨의 생육 및 개화에 미치는 영향

최영훈,최영환,이영근,김용균,손병구,강점순,김근기 밀양대학교 농업기술개발연구소 2000 農業技術開發硏究所報 Vol.4 No.1

The lower leaves shading in upper leaves is unknown to be reduced significantly due to the early differentiation of flower-bud by dark treatment of leaves when growing perilla for harvesting the leaves in the greenhouse during the winter. This study analyzed the effect of dark treatment of leaves on the growth and regulation of flowering, which are closely related with differentiation of flower and amount of leaves. One leaf and 3 leaves per plant were dark treated for 0, 5, 10 days. Plant hight was reduced in 3 leaves treatment, but there was no difference in 1 leaf treatment. Stem diameter was reduced in both 1 leaf and 3 leaves treatments, which was more significant in 3 leaves treatment. Leaf area was reduced when 1 leaf was treated for 10 days, but there was no difference when 1 leaf was treated for 5 days. When 3 leaves were treated, leaf area was no difference between treatments. However, leaf area which 3 leaves were treated was reduced more significantly than that 1 leaf was treated. Seed weight was remarkably decreased when 1 leaf was treated for 10 days, and it was decreased when 3 leaves were treated for more than 5 days.