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송창훈,김배진,김도석,오세훈 중앙대학교 미래신기술연구소 2002 미래신기술연구소 논문집 Vol.11 No.2
최근 전기를 이용한 근거리 이동수단이 많이 선보이며 관심을 끌고 있다. 그러나 대부분의 제품들이 속도 조절을 모터의 회전속도에만 의존하는 경향이 있어 오르막이 많은 한국의 지형에서 구동 토오크가 사용자를 만족시키지 못하고 있다. 따라서 본 연구에서는 간단한 구조로 감속비 조절이 가능한 감속기를 설계 적용함으로써 다양한 운행조건을 만족시킬 수 있는 변속 가능한 2단 변속 모터보드를 개발하고자 한다. Recently, short distance mobile system appeals to people as solution for the traffic congestion, air pollution and so on. But almost products are desinged in consideration of only level ground, so they fell short of expectations because of no working up to their ability under Korean topography with an ascent. In this paper, the two stage speed reducer which changes speed by the simple device is designed and is adapted to motor board for developing mobile system suitable for Korean topography
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의과대학 산과학 강의에 있어서 주제발표식 학습에 시도와 문제점 분석
송창훈 朝鮮大學校 附設 醫學硏究所 1998 The Medical Journal of Chosun University Vol.23 No.1
Traditionally, medical education was performed by professor-centered lectures However, medical education is changing rapidly from traditional concepts to new trends. One of the changes is problem based learning. The purpose of this study is to model the modified PBL which is adjusted in our educational environment. A class of 165 students at Chosun U-niversity Medical School. was selected as a study group from August 1997 to October 1997. The lecture was performed by the students themselves every week according to lecture topics given from the tutor. The results were as follows: 1.The students' own opinions about ; ubject-Oriented Student Lecture(SOSL) were mainly(78%) that it was worthy of development with repletion. 2. The students who wanted to partici late in a lecture were 58.8%, and the students who didn't want were 38%. 3. The disadvantages of SOSL, which were indicated by students, were disorganized and disarranged lectures(31.9%), unclear lectures(30%), lack of reliability (19.4%), and partial participation(18.8%). 4. The students who participated in SOSL needed additional professor's supplementary lecture(54.3%), whole participation (48.9%), presentation skills (40%), programming (24%). preparation (17%). 5. The students had difficulty in group study (60%), subject understanding (446%). reference survey(31%),and lack of time(26%). 6. The educational patterns of Chosun Medical School were professors-entered with lecture notes (79.4%). 7. The students that wanted changes from the previous teaching methods were 96.9% and those that did not want changes were 3.1%. In conclusion, SOSL may cause some confusion and dissatisfactions to students who are familiar with traditional professors-entered lectures, but by revolution and development. SOSL will be applicated as an effective instruction in our actual circumstances.
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Indomethacin으로 유발된 생쥐의 위점막 손상에 대한 소체환(消滯丸)의 효과
송창훈,백태현,Song, Chang-Hoon,Baek, Tae-Hyeun 대한한방내과학회 2010 대한한방내과학회지 Vol.31 No.3
Objectives : This study was carried out to investigate the effects of Soche-hwan extract on indomethacin-induced gastric mucosal lesions of mice. Methods : Experimental mice were divided randomly into four groups. The normal group, the gastropathy group of gastro-inflammation elicited mice, the misoprostol group of mice administered misoprostol after gastro-inflammation elicitation and the Soche-hwan group of mice administered Soche-hwan after gastro-inflammation elicitation. Results : The hemorrhagic erosion of gastric mucosa, the damage of arrangement of mucous secreted cells and HSP70 increased in the gastro-inflammation elicited group, but decreased significantly in the misoprostol and Soche-hwan extract administered groups. Cell proliferation of gastric mucosa decreased in the gastro-inflammation elicited group, but increased significantly in the misoprostol and Soche-hwan extract administered groups. The distribution of mucosal neck cells and mucosal surface cells and PNA positive reactions of surface mucus cells decreased in the gastro-inflammation elicited group, but increased significantly in the misoprostol and Soche-hwan extract administered groups. COX-1 positive cells decreased in the gastro-inflammation elicited group, but increased significantly in the misoprostol and Soche-hwan extract administered groups. iNOS mRNA and COX-2 mRNA increased in the gastro-inflammation elicited group, but decreased significantly in the Soche-hwan extract administered group. NF-kB p65, iNOS and COX-2 increased in the gastro-inflammation elicited group, but decreased significantly in the misoprostol and Soche-hwan extract administered groups. Conclusion : Soche-hwan extract had excellent effects on indomethacin-induced gastric mucosal lesions in mice.
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4행정 가솔린기관의 상용배기시스템 소음저감 및 성능에 관한 실험적연구
송창훈,양진승,차경옥 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-
In vehicle exhaust systems the sound attenuation and the reduction of flow losses are often two competing demands. The present study considers a fully vehicle exhaust system and investigates experimentally both the sound attenuation and the flow performance of production configurations including the catalyst, the resonator, and the muffler. Dynamometer experiments have been conducted with 1500cc engine with speeds ranging from 1000 to 5000 rpm. Measurements include the flow rates, the temperatures and the absolute dynamic pressures of the hot exhaust gases at point locations. The present study describes the experimental aspects of an ongoing effort to validate and use the nonlinear fluid dynamic models in the time-domain for the prediction of the acoustic and power performance of firing internal combustion engines with full production exhaust systems.
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송창훈,이슬희,김정철,오성원,정종진,황진우,백태현,Song, Chang-Hoon,Lee, Seul-Hee,Kim, Jung-Chul,Oh, Sung-Won,Jeong, Jong-Jin,Hwang, Jin-Woo,Baek, Tae-Hyun 대한한방내과학회 2006 대한한방내과학회지 Vol.27 No.3
Objectives : This study was designed to evaluate the effects of oriental treatment on cancer patients. Methods : We retrospectively analyzed the medical record of a distal cholangiocarcinoma patient who had been treated with oriental medicine for 150 days. He complained of anorexia, dyspepsia, fatigue, weight loss, constipation, abdominal discomfort and pain. etc. We prescribed him Samchulkunbi-tang and other oriental medicines, in order to treat symptoms and improve long term survival. Results and Conclusion : For 150 days, he was treated with oriental medicine and the symptoms mostly disappeared. We had a worthwhile improvement of long term survival. When it comes to therapeutic effects, it could be suggested that oriental medicine has significant effects on improving symptoms, survival and quality of lifes.
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