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송문식,이태용,이동배 충남대학교 의과대학 지역사회의학연구소 1990 충남의대잡지 Vol.17 No.1
Two hundreds and ninety-one cases of cerebrovascular accident patients, admitted at one general hospital, located at Taejeon city were studied descriptively for five years from January, 1984 to December, 1988. 1. Among the 291 cases, cerebral hemorrhage were 65.6%, subarachnoid hemorrhage were 16.2%, cerebral embolism were 10.0%, and cerebral thrombosis were 8.2%. 2. The sex ratio was 1:1.1(M:F), and the sixth decade was the most prevalent age group. The seasonal incidence was highest in spring, and winter, summer, and autumn were followings in the order. The time of onset of incidence was most prevalent between 13:00 and 22:00. 3. As for the associates at the onset of CVA, rest was 33.5%, and was work 23.8%. The most common symptoms were nausea, vomiting and headache. Patients admitted with recurrent attacks were 16.9%. The rate of patient with the past history of hypertension and cardiovascular disease were 53.3%. 4. The overall mortality of cerebrovascular accident was 13.0%, of CVA patient the mortality rates of subarachnoid hemorrhage were 23.0%, cerebral hemorrhage were 13.0%, cerebral thrombosis 8.0%, and cerebral embolism 3.0%, in that order. 5. Hypertension was found in 80.0% of total cases; the common findings of electrocaridography were normal and left ventricular hypertrophy; 82.1% of chest X-ray findings was normal: normal levels of S-cholesterol, s-triglyceride, s-glucose, urine protein, and urine glucose were 94.3%, 66.0%, 72.5% and 53.8% respectively.
높은 자릿수 나눗셈 연산기에서의 영역변환상수를 위한 검색테이블 설계 및 구현
이병석(Byeong-Seok Lee),송문식(Moon-Sik Song),이정아(Jeong-A Lee) 한국정보과학회 1999 한국정보과학회 학술발표논문집 Vol.26 No.2Ⅲ
나눗셈 알고리즘은 다른 덧셈이나 곱셈 알고리즘에 비해 복잡하고, 수행 빈도수가 적다는 이유로 그 동안 고속 나눗셈의 하드웨어 연구는 활발하지 않았다. 그러나 멀티미디어의 발전 및 고성능의 그래픽 랜더링을 위한 보다 빠른 부동소수점연산기(FPU)가 필요하게 되었으며, 이에 따라서 고속의 나눗셈 연산기의 필요성이 증가하게 되었다. 특히, 전체의 수행 시간 향상을 위해서라도 고속 나눗셈 연산기의 중용성은 더욱 부각되고 있다. 그러나 고속 나눗셈 연산기의 연산 속도와 크기라는 서로 상반되는 요소를 가지고 있다. 즉, 연산 속도가 빠르면 크기는 늘어나고, 크기를 줄이면 연산 속도는 늦어지게 된다. 본 논문은 높은 자릿수(Very-High Radix) 나눗셈 알고리즘에서 영역변환상수를 구하는 방법으로 연산이 아닌 검색테이블(Look-up Table)을 이용한다. 그리고 검색테이블의 크기를 줄이는 방법으로 영역변환상수의 범위 분석 및 캐리 저장형을 이용한 검색테이블 분할 방법을 이용하였다. 전체적으로는 영역변환상수를 구하는 연산주기가 필요 없게 되므로 나눗셈 연산기의 영역 크기의 변화가 적으면서 연산 속도는 빨라졌음을 알 수 있다.
박문권(Moon Kweon Bang),김상섭(Sahng Seop Kim),주봉덕(Bong Deok Ju),송문식(Moon Sik Song),박미자(Mee Ja Park),한균인(Kyun In Han),김주옥(Ju Ock Kim),김선영(Sun Young Kim) 대한내과학회 1989 대한내과학회지 Vol.37 No.5
N/A In 1904, Albrecht first used the term hamartoma to refer to a congenital abnormal mixing of the normal components of an organ. Hamartomas can occur in any organ. The pulmonary hamartoma is an uncommon benign tumor, which is mainly located parenchymally and rarely located Intrabronchially. Fifty eight Case of intrabronchial hamartoma and 4 cases of multiple hamartoma were reported worldwide by 1972 and 1973, respectively. Intrabronchial hamartomas, 6 cases of which were presented by Cho and 1 case of which was presented by Lee, were reported domestically, in which, however, no intrabronchial multiple hamartoma was found. Recently we experienced a case of endobronchial multiple chondroid hamartoma identified with flexible bronchoscopic biopsies, and we herein report it with a review of the literature.