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박철호,유정근,Park, Cheol Ho,Yoo, Jung Kun 한국시스템엔지니어링학회 2010 시스템엔지니어링학술지 Vol.6 No.2
국내에 다양한 시스템 엔지니어링 전산지원도구(Computer Aided tools for Systems Engineering)가 도입되고 도구의 기능이 향상됨에 따라 시스템 엔지니어링 전산지원환경을 구축하는 사례가 늘어나고 있다. 전산지원환경을 구축하기 위해서는 기존의 국내외 시스템 엔지니어링 표준 및 지침에서 언급되지 않은 구체적인 업무에 대한 고려가 요구되기 때문에, 많은 노력과 시간이 소요된다. 시스템 엔지니어링 본 연구에서는 국내 연구소 및 기업의 시스템 엔지니어링 전산지원환경을 구축하는 과정에서 습득된 문제점과 경험적 교훈(lessons learned)을 정리하였다.
박철호,우종수,조광현,Park, Cheol-Ho,U, Jong-Su,Jo, Gwang-Hyeon 대한흉부심장혈관외과학회 1987 Journal of Chest Surgery (J Chest Surg) Vol.20 No.1
Exposure of the cardiac pacemaker is still a difficult problem associated with high morbidity. Grossly infected pacemaker systems had been required removal and insertion of a new system. It would highly desirable to develop a new method that could salvage an exposed well functioning unit because cardiac pacemaker is very expensive. We have experienced one patient with exposed well functioning cardiac pacemaker, which was relocated to contralateral subpectoral pocket and healed without complication. This relocation of the pacemaker to subpectoral pocket is less simple, expensive and should be considered as an alternative to complete replacement of unit.
시스템이론 기반의 안전사고 모델의 해석과 응용사례 소개
박철호,박영원,Park, Cheol-Ho,Park, Yeong-Won 한국시스템엔지니어링협회 2004 시스템엔지니어링워크숍 Vol.4 No.-
This paper presents the general system theory and its applications to the safety analysis method that is a recent trend over the traditional event-driven model. This new model is known as STAMP(Systems Theory Accident Modeling and Process)proposed by Nancy G. Leveson in MIT. The new model has benefits of systemic approaches concerning the system safety as a whole including the context it is in, its stimulants and outcomes, and its parts as well as the relationships among them in a holistic manner. The method consists of a hierarchical control structure, a process model, and the safety constraints governing the control. This paper demonstrates an example the contrasts the differences between the approaches of STAMP and the traditional safety models.
박철호,우종수,조광현,Park, Cheol-Ho,U, Jong-Su,Jo, Gwang-Hyeon 대한흉부심장혈관외과학회 1988 Journal of Chest Surgery (J Chest Surg) Vol.21 No.2
Increasing success in the management of patients with severe respiratory failure by mechanical respirators has produced iatrogenic tracheal stenosis. And the surgical management of these lesions have provided a major field for tracheal reconstructive surgery. Recently we have experienced three cases of postintubation tracheal stenosis between December, 1985 and October, 1987 and successfully performed circumferential resection and end to end anastomosis of the trachea. The lesion of the first case which was located in the subcricoid level was resected about 2cm length with cervical incision. And the lesion of the second case located at the cuff site was also resected about 2.5cm length with cervical and median sternotomy incision. Also the lesion of the third case located at the stoma site was resected about 1.8cm length with cervical incision. The postoperative courses were uneventful but there was extubation difficulty in the third case because of stupor mentality and problem of secretion excretion. So we have observed the postoperative course after T-tube insertion.
박철호,우종수,조광현,Park, Cheol-Ho,U, Jong-Su,Jo, Gwang-Hyeon 대한흉부심장혈관외과학회 1988 Journal of Chest Surgery (J Chest Surg) Vol.21 No.3
Coarctation of the aorta is classically a congenital narrowing of the upper descending thorac aorta adjacent to the site of attachment of the ductus arteriosus which is sufficiently severe that there is a pressure gradient across the area. Recently we have experienced two cases of coarctation of the aorta and successfully performed resection of the sites of coarctation and end to end anastomosis of the aorta. The first case was a juxtaductal type of coarctation of the aorta with PDA and the pathology of the lesion was a diaphragm with central narrow opening. And the resection length was about 0.5cm and aortic clamping time was 20 minutes. The second case was also juxtaductal type coarctation of the aorta with mild tubular hypoplasia of aortic isthmus, left SVC and the pathology was also a diaphragm with central narrow opening. And the resection length was about 0.5cm and aortic clamping time was 29 minutes. Both postoperative course was uneventful and the patients were discharged two weeks after operation.
박철호,심재홍,Park, Cheol-Ho,Sim, Jae-Hong 한국정보처리학회 1998 정보처리학회논문지 Vol.4 No.1
특정한 부분에 정확성을 가지는 기하학 형태인식은 이미지 분석 응용에서 중요하게 다루어져 왔다. 또한, 부분적 혹은 변형된 모양을 계층화하는 새로운 접근방법에 대한 연구가 계속되고 있다. 그러므로 본 논문에서는 자유형태의 부드러운 곡선을 생성하는데 용이한 스플라인 공식들을 이용하여 새로운 기하학 형태 매칭 접근 방법을 제안한다. 이와 같은 방법에서, 여러개의 스플라인 공식들로 생성된 곡선들의 집합은 동일한 형태의 성질을 가진다. 본 논문은 곡선 설계를 위하여 일반적인 상호작용 방법과 다양한 스플라인 공식간에 관계들을 이용함으로서 간단한 설계점(design point)들의 이동으로 형태매칭 방법에 관한 관계성을 보인다. 그러므로, 본 논문에서는 3차 스플라인의 공식(B-splines, Bezier splines, Catmull-Rom splines)을 이용하여 형태 매칭 방법을 제안한다.
박철호,Park, Cheol-Ho 축산물품질평가원 2008 KAPE누리 Vol.144 No.-
가끔 우리는 생각지도 못한 일이 생겨 돼지가격이 곤두박질치는 것을 본다. 지난 2002년 5월 경기 충북 일대에서 발생한 구제역이 바로 그런 경우인데, 양돈기업들은 그때 전 재산이나 다름없는 수만 마리의 돼지들을 땅속에 묻어야 했다. 돼지 가격을 흔드는 것은 구제역, 돼지콜레라 뿐만이 아니다. 돼지 가격이 좋을 때 갑자기 사육 두수가 늘어나면 언제 또 돼지 값이 폭락할 지 알 수가 없다. 지난 10년간의 돼지 가격은 거의 매년 폭락과 폭등을 반복하고 있다. 가격이 좋을 때에는 괜찮겠지만 문제는 가격이 폭락할 때이다. 가격이 좋아서 큰돈을 버는 것도 좋지만 거의 해마다 반복되는 가격 폭락을 피하고 돼지를 제값에 팔 수 있다면 얼마나 좋을까? 여기에 '선물거래'가 해답이 될 수 있다.
수중체중(水中體重)(Under water weight) 측정(測定)에 의한 총지방량(總脂肪量)에 관한 연구(硏究)
박철호 ( Cheol Ho Park ) 東亞大學校附設 石堂傳統文化硏究院 1982 石堂論叢 Vol.6 No.-
This thesis aimed to provide data necessary for our national public health administration and the screening of the fat people by presenting the normal value of body fat on a basis of the mean value of body fat. The subjects were 87 male adults ranging from 20 to 27 years of age when their physihue and organ reach full growh, and 199 female adults 20 to 45 years of age. The mean value was obtained by measuring body height, body weight, chest of girth, and sitting hight; by determing body fat based on under-water weight measurement; by taking the measurement of subscapular, abdomen, lumber and upper arm. The results obtained were as follows.