사면의 안정도 해석을 위한 입체투영법

이성대,이철우,이동우,이성규 公州大學校 基礎科學硏究所 1996 自然科學硏究 Vol.5 No.-

암반 사면의 안정성을 해석하는데 입체투영기법을 이용하였다. 안정도에 영향을 미치는 요인으로는 절리의 경사, 암석의 밀도, 내부마찰각등이 있으나, 가장 중요한 요인은 절리면의 경사이다. 이 연구에서는 암석의 점착력은 무시하고 단지 내부마찰각과 절리의 주향 및 경사만을 이용하였다. 그 결과 입체투영도에서 나타나는 암반사면의 안정도는 이동력과 저항력의 상대적인 크기에 의하여 좌우되는 것으로 나타났다. 동시에, 지반진동에 의한 영향도 입체 투영기법으로 찾아낼수 있다는 것이 밝혀졌다. Stereographic projection technique was used to analyze rock slope stability. Strike and dip of joints, rock strength, and internal frictional angle are major factor on slope stability. Among them, the most important factor is strike and dip of joints. In stereographgic projection technique, only internal frictional angle, and strike and dip of joints were used to interprete slope stability. Cohesion of rock was not considered. It is suggested that the rock slope stability on stereographic projection depends upon only the differential stress between driving and resisting force. At the same time, Stereographic projection technique on seismic loading was proposed in this study.

참깨의 栽培環境이 收量構成要素, 脂肪酸組成 및 잎마름病 發生에 미치는 影響

李徹熙,朴然圭,朴栽成,崔仁植 충북대학교 농업과학기술연구소 1994 農業科學硏究 Vol.12 No.1

This experiment was carried out to investigate the effect of environments on yield components, fatty acid composition and leaf blight caused by Corynespora cassicola in sesame. Comparing yield components with different experimental locations, weight of 1,000 grains and maturation rate of grains were lower in Boeun area than that in other areas and there were no significantly different among soil textures. The repeated cultivation of sesame, 2-6 years, increased the occurrence rate of Corynespora leaf blight and fungi density of soil more than that with cultivation of first year and crop rotation. Yield and yield components were also decreased more with the repeated cultivation than that with first year cultivation. In fatty acids of sesame seeds, concentration of oleic acid was slightly high with sesame seeds harvested in Jungweon and Boeun areas, while linoleic acid was slightly high in Jecheon area located on the northern part of Chungbuk province. Concentration of palmitic and stearic acids which are saturated fatty acids were high in loam soil, while linoleic acid which is unsaturated fatty acids was no different among soil texture. Concentration of oleic acid was decreased more in the repeated cultivation of first year cultivation. Oil content was high in Jungweon area and with loam soil, and it was decreased through the repeated cultivation of sesame.

수학사를 이용한 수학교육의 방법

이성철,전상표 남서울대학교 2004 남서울대학교 논문집 Vol.10 No.2

It is the great necessity of mathematics in daily life. Also, importance of mathematics is more increase for our enhanced living in 21st century. But mathematics education of Korea is getting behind both quantity and quality, because many people think that mathematics is difficult and unaccessible. This paper give an mathematical interest through history of mathematics and present the Methods of mathematical education used on history of mathematics.

플로우(Flow)가 배너광고의 지각된 혼잡도와 광고태도에 미치는 영향 : 이용자의 주의에 따른 차별적 효과

이철선,유승엽 한국방송광고공사 2004 광고연구 Vol.0 No.63

인터넷에서는 많은 배너광고가 동시에 제시될 뿐만 아니라 브랜드들이 유사한 경우가 많다. 이는 광고의 지각된 혼잡도(perceived clutter)의 구성요인과 밀접한 관련성을 가진다. 그러나 인터넷은 쌍방향 커뮤니케이션이 가능하여 자신의 의사에 따라 선택적으로 광고를 회피하거나 볼 수 있는 매체이다. 따라서 본 연구에서는 인터넷 광고의 지각된 혼잡도를 포함한 광고효과를 반복적인 경험과정 측면에서 그리고 소비자의 통제권이라는 측면에서 살펴보고자 시도되었다. 먼저 본 연구에서는 인터넷 이용자의 주의의 대상에 따라 광고의 지각된 혼잡도와 광고태도에 직접 영향을 미치는 플로우의 역할과 방향성에 대한 연구가설을 설정하였다. 그리고 플로우가 지각된 혼잡도와 광고태도에 미치는 간접적인 경로에서 지각된 행동통제가 매개변수로 작용한다는 연구가설도 설정하였다. 특히 두 번째 경로는 플로우가 광고태도에 미치는 영향이 소비자의 통제권 하에서 이루어진다는 것을 설명하기 위함이었다. 분석결과, 지각된 혼잡도에 영향을 미치는 플로우에 대한 가설은 유의한 것으로 나타났다. 그리고 플로우가 광고태도에 미치는 영향에서 지각된 행동통제가 중요한 매개변수로 작용함과 동시에 주의의 대상에 따라 방향성도 차별적인 것으로 나타났다. 이와 같은 연구결과는 인터넷 광고전략에 유용한 시사점을 제공하리라 기대된다. The previous articles for the perceived clutter in banner advertising has been dealt with what factors effect advertising clutter and relationship between advertising clutter and advertising attitude. But internet is possible media with a two-way communication. So, consumer have the right for control with selective avoidance or selective watching to advertising in internet. Therefore, this article intends to research internet advertising as experience process in the perspective of two-way communication replicated continuously. At first, researchers hypotheses about the effect of flow on perceived clutter and advertising attitude directly in banner advertising. Second, we are especially developed conceptual model considering perceived behavior control, intervening variable, in the relationships between flow, perceived clutter and advertising attitude by a subject of attention in banner advertising. The reason of established second hypothesis is to account for that experience process is accompany with user's emotional feelings by a subject of attention. The results of analysis, hypothesis for the role of flow and perceived behavior control including the possibility for decreasing perceived clutter is verified. And perceived behavior control verified as intervening variable in the relationship between flow and advertising attitude by a subject of attention. The results of study provide the strategic implication in internet advertising strategy.

선진국 자원봉사 지원체계 및 활성화 방안

이성철 남서울대학교 2001 남서울대학교 논문집 Vol.7 No.-

In general, volunteerism might be one of pivotal tools to make a community with common benefits. Thus, it might be regarded not as good deeds, but as the deed of human rights because it could enable us to get an answer how to live. From this perspective, the volunteerism may be most important for new millenium life. The purpose of this paper is investigate supporting system of volunteer activities in some high developed country, and to suggest enhanced solution which would help to eliminate the trouble factor of volunteer fields in Korea.

PC통신 이용 실태 및 이용자 의식 조사 연구

이성철,김지화 昌原大學校 社會科學硏究所 1998 사회과학연구 Vol.4 No.-

뇌졸중 환자의 인지기능이 일생생활활동에 미치는 영향

이성란,권혁철 한국전문물리치료학회 2003 한국전문물리치료학회지 Vol.10 No.3

演習林 木本植物 調査에 관한 硏究

李命器,全哲,吳正壽,金成柱 圓光大學校大學院 1987 論文集 Vol.1 No.-

1. The tree grown in the university forest consisted of 54 families, 69 genera, 167 species, 15 varieties, 2 forma, so that the totaling were 185 taxa. 2. At a height of 500 meters over, the forest mostly consisted of Quercus variabilis forest. 3. We need to collect cork from Quercus variabilis growned massively and have enlarged artificial reproduction than now. 4. Cryptomeria japonica forest area that artificially reproducted at 11 block is a model managed forest. 5. According to the results, because the species defined the temperate zone, it is not suitable for the practice of students. Therefore, we need the positive act of university so that the forest species obtain the other forest zone.

부신피질 호산성 과립세포종 1예

이성진,이호권,박철영,정인경,홍은경,오기원,김현규,김두만,유재명,임성희,최문기,유형준,박성우 대한내분비학회 2004 Endocrinology and metabolism Vol.19 No.1

저자들은 건강검진에서 시행한 복부 초음파검사상 우연히 좌측 부신 종괴가 발견되어 복부 전산화 단층 촬영검사와 호르몬검사를 시행한 후 부신피질 악성종양과의 감별 진단을 위해 부신절제술과 전자현미경검사를 포함한 병리조직학적 검사를 시행하여 부신피질호산성 과립세포종으로 진단한 증례를 경험하였기에 문헌고찰과 함께 이를 보고하는 바이다. Oncocytomas are neoplasms, histologically are composed of epithelial cells, with abundant, acidophilic and granular cytoplasm. Electron microscopic studies of oncocytomas have shown that the cytoplasm of oncocytes is packed with mitochondria. The adrenal gland is a very rare anatomical site for oncocytomas, and to the best of our knowledge, only thirty-six cases of adrenal oncocytomas have been described. Herein, a case of a large adrenal mass in a forty-year-old man, which was incidentally detected by abdominal ultrasonography, is presented. This patient demonstrated no clinical manifestation associated with adrenal hyperfunction. Hormonal studies showed no abnormal findings, except for a mild elevation of the 24-hour urinary VMA level. Abdominal computed tomography with enhancement revealed a large, well-defined left adrenal mass, measuring 5.0×4.2 ×3.0 cm. The patient underwent a left adrenalectomy, and a light microscopic examination confirmed an adrenocortical oncocytoma, with characteristic oncocytes and polygonal, abundant, eosinophilic and granular cytoplasm. The tumor cells were positive for cytokeratin and vimentin as well as S-100, but negative for chromogranin on immunohistochemical staining. An electron microscopic examination demonstrated closely packed mitochondria, containing intramitochondrial inclusions. After surgery, there was no evidence of a recurrent or distant metastatic disease at the 5 month follow-up. In summary, an extremely rare case of a man with an adrenocortical oncocytoma is reported, which was confirmed by histological examinations, including electron microscopy (J Kor Soc Endocrinol 19:82∼89, 2004).

관상동맥 시술 도중 발생한 좌주간부 관상동맥 박리에 대한 스텐트 삽입 치료의 단장기 임상 결과 : acute and long-term results

이세환,이승환,홍명기,김영학,이철환,한기훈,송종민,강덕현,송재관,김재중,박성욱,박승정 대한내과학회 2004 대한내과학회지 Vol.66 No.6

목적 : 심도자 사용 시술과 관련된 좌주간부 관상동맥박리에 대한 적절한 치료는 아직 확실히 정립되지 않은 상태이다. 이에 본 연구는 좌주간부 관상동맥 박리에 대한 스텐트 삽입술의 단장기 임상결과를 후향적으로 분석하였다. 방법 : 좌주간부 관상동맥 박리에 대한 치료로 즉각적인 스텐트 삽입술을 시행하는 것이 안전하고 효과적인 방법임을 가설하였고, 이러한 즉각적인 스텐트 삽입을 시행한 10명의 환자를 대상으로 단장기적 임상경과를 의무기록 고찰과 전화 면담을 통해서 평가하였다. 결과 : 전체 환자 모두 처음부터 좌주간부 관상동맥에 유의한 협착을 가진 환자는 없었으며, 8명의 환자는 심도자의 조작으로 인한 박리가 발생한 경우였고(진단적 혈관 조영술 중에 3명, 유도 도자 조작 중에 5명), 나머지 2명은 다른 병변에 스텐트 삽입시술을 하는 중에 박리가 발생하였다. 이 10명의 환자에서 모두 즉각적인 스텐트 삽입술이 시행되었고, 4명의 환자에서 시술 도중 혈압 저하로 Intra-aortic Ballon Pump (IABP)를 장착하였다. 모든 환자에서 성공적으로 스텐트가 삽입되었고, 병원내 사망은 1명도 없었다. 6개월 추적 관상동맥 조영술은 8명의 환자에서 시행되었다. 혈관 조영상의 재협착(직경 협착 50% 이상)은 8명 모두에게서 관찰되지 않았으며, 퇴원 후 평균 31±25개월의 추적관찰 결과 주요 심장사건은 1건도 발생하지 않았다. 결론 : 비록 대상 환자가 적은 연구였지만 좌주간부 관상동맥 박리에 대한 스텐트 삽입술은 기술적으로 안전하고 빠르게 시행 할 수 있으며, 훌륭한 단장기적인 치료 효과를 보여준다. Background : The optimal treatment of patients with left main coronary artery (LMCA) dissection during catheter-based procedure remains uncertain. We retrospectively analyzed the acute and long-term results of bail-out stenting for LMCA dissection. Methods : In cases with significant LMCA dissection occurring during catheter-based procedure, prompt stent implantation may be safe and associated with favorable clinical outcome. We evaluated the acute and long-term results of bail-out stenting for LMCA dissection occurring during catheter-bases procedure in 1- patients. Results : Initially, there was significant stenosis of LMCA segment in these patients. Catheter-induced dissection occurred in 8 patients (during diagnostic angiography in 3 patients and guiding catheter manipulation in 5 patients). Two patients suffered dissection in the setting of stent deployment in other vessels. Therefore, bail-out stenting LMCA dissection was performed in a total of 10 patients. In 4 patients, hypotension developed and intra-aortic balloon pump was placed during procedure. Stents were successfully deployed in all patients. There was no in-hospital mortality. Six-month angiographic follow-up was performed in 8 patients. Angiographic restenosis(diameter stenosis 50%) was not observed in all patients at follow-up study. During a mean follow-up of 31±25 months after hospital discharge, there was no major adverse cardiac event (death, myocardial infarction, and target lesion revascularization). Conclusion : Bail-out LMCA stenting is technically feasible, and showed good acute and long-term results in a small series of patients.