워크스테이션 클러스트 환경에서 병렬 BMA의 구현 및 성능 분석

김종렬(Jong Ryul Kim),나현태(Hyun Tae Na),김정선(Jung Sun Kim),문영식(Young Shik Moon) 한국정보과학회 1999 한국정보과학회 학술발표논문집 Vol.26 No.2Ⅲ

본 논문에서는 동영상에서 움직임 벡터를 찾는 방법 중의 하나인 BMA(Block Matching Algorithm)를 워크스테이션 클러스터(cluster of workstations) 환경하에서 구현하고 이에 대한 성능 분석 모델을 제시한다. 동영상에서 움직임 벡터를 찾는 BMA는 영상처리 및 컴퓨터 비전 분야에서 널리 사용되는 방법으로 병렬화를 통해 처리 속도를 단축시킬 수 있는 알고리즘이다. 그러나 워크스테이션 클러스트 환경하에서는 데이터의 분할 및 각 노드간의 통신 방법에 따라서 전체적인 성능에 많은 영향을 미친다. 따라서 본 논문에서는 최적의 데이터 분할 및 각 노드간의 통신을 최소화하는 병렬 BMA를 설계 · 구현한다. 또한 데이터의 분할 및 각 노드간의 통신을 고려한 성능 모델을 제시하여 프로세서의 증가 및 데이터의 분배에 따른 성능을 예측하고, 실험 결과를 통하여 제시한 모델의 타당성을 입증한다.

비디오 자막 추출 및 인식 기법에 관한 연구

김종렬(Jong Ryul Kim),김성섭(Sung Sub Kim),문영식(Young Shik Moon) 대한전자공학회 2001 대한전자공학회 학술대회 Vol.2001 No.6

부산지역의 암 사망에 관한 역학적 연구

김휘동,구혜원,곽문석,김종렬,손병철,문덕환,이종태,조규일,엄상화,정귀옥,전진호,이채언,Kim, Hwi-Dong,Koo, Hye-Won,Kwak, Moon-Suk,Kim, Jong-Ryul,Son, Byung-Chul,Moon, Deog-Hwan,Lee, Jong-Tae,Cho, Kyu-Il,Ohm, Sang-Hwa,Jung, Kui-Oak,Chun, Jin 대한예방의학회 1996 Journal of Preventive Medicine and Public Health Vol.29 No.4

This study surveyed and measured the level and structure of cancer deaths and their trends over time for offering the fundamental data of e cancer prevention and control in Pusan city in the future. Authors conducted the study of descriptive epidemiology using materials derived from the computerized data of total 3,722 certified cancer deaths in Pusan city from January 1 to December 31, 1993 registered on the National Statistical Once, the Republic of Korea. The obtained results were as follows: 1. According to the total registered cases of deaths(16,331 cases) in Pusan city during 1993, cancer(3,722 cases) and cerebrovascular disease(2,118 cases) were the first and second cause of deaths as 23.1% and 16.9%, respectively. These pattern showed the change between cancer (14.7%) and cerebrovascular disease(18.5%) in order of frequency in comparison to 1982. Also, the total number of cancer deaths was increased in comparison to 1982. The rate of death certification by physicians was 87.1% of all registered deaths, which was increased to 6.8% in comparison to 1982(80.3%). 2. Crude death rate and cancer specific death rate was 4.06 per 1,000 populations and 93.8 per 100,000 populations(male:117.8, female:70.0), respectively. The former was similar to that of 1982, but the latter was increased to 1.6 times as that of 1982. 3. Age-adjusted cancer specific death rate by standardization with whole country population was 111.9(male:141.5, female:106.7) per 100,000 populations, higher than not age-adjusted cancer specific death rate(93.8), and the sex difference was statistically significant with male predominance (p<0.05). 4. Cancer specific death rate by age was generally increased with age and most of cancer deaths(male:91.8%, female:88.5%) occurred since 40 years old. 5. The major cancer(cancer specific death rate per 100,000 populations) in male was liver(30.6) followed by stomach(25.6), lung(21.9), and GB and EHBD(5.7), in female stomach(15.7), liver(9.9), lung(7.3), and uterus(6.9). The relative frequency of the leading three cancer among total cancer deaths marked 66.3% in male and 47.l% in female, and decreased in comparison to 1982(male:72.2%, female:54.5%). 6. The total ratio of male to female cancer specific death rate showed 1.68 to 1 with male predominance. And the ratio was above 2.0 in larynx, oral cavity & pharynx, esophagus, liver, lung, bladder cancer and the ratio was $1.0\sim1.9$ in stomach, pancreas, gall bladder and EHBD, brain, rectum and anus cancer, leukemia, but the ratio was reversed in thyroid and colon cancer. In conclusion, cancer was the first cause of deaths. The proportion of lung cancer was increased, that of stomach & uterine cancer was decreased relatively, and liver cancer was constantly higher proportion. In the future, it is necessary to conduct the further investigations on the cancer risk factors considering areal specificity.

남성 사무직 관리자의 생활습관, 스트레스 수준과 과민성 대장증후군

김종렬,엄상화,전진호,정수진,이창희,정귀원,최순석,배기택,Kim, Jong-Ryul,Urm, Sang-Hwa,Chun, Jin-Ho,Jeong, Soo-Jin,Lee, Chang-Hee,Jeong, Kui-Won,Choi, Soon-Seok,Pai, Ki-Taek 대한예방의학회 1997 예방의학회지 Vol.30 No.4

Irritable bowel syndrome(IBS) is one of the common health problem that has been considered as stress-induced. This study was conducted to investigate the relationship between life style and the level of stress and IBS by structured questionnaire which included questions on life style, the self-esteemed gastrointestinal symptoms, and Psychosocial Well-being Index(PWI). Subjects were 1,498 male white collars who get the regular health check and participated in survey at Inje University Health Promotion Center from January to ,December, 1996. The overall prevalence of IBS was 37.5%(561 cases), and the level of stress by PWI score was higher in IBS group$(41.8{\pm}14.2)$ than symptom-free group$(34.6{\pm}12.6)$. As the result of comparison between the two groups, heavier smoking (adjusted O.R=2.48, 95% C.I 1.81-3.41), longer daily working time (adjusted O.R=5.19, 95% C.I 3.59-7.56), stimulatory food materials-mainly hot or salty (adjusted O.R=1.87, 95% C.I 1.44-2.45), higher body mass index (adjusted O.R=1.80, 95% C.I 1.27-2.57), and higher level of stress (adjusted O.R=2.81, 95% C.I 1.80-4.43) were estimated as risk factors of IBS. On the contrary, 6-8 hours sleeping per day (adjusted O.R=0.38 95% C.I 0.21-0.70), 3-4 times exercise per week (adjusted O.R=0.57 95% C.I 0.39-0.83), and tenure more than 20 years (adjusted O.R=0.25 95% C.I 0.16-0.35) were considered as protective factors to IBS. In summary, the assessment of the stress level might be placed in the first priority to control IBS, at least by some degree, which suggested that IBS could be controlled by avoiding such risk factors and by encouraging such protective factors.

The Report on the Medical Voluntary Activities for Cleft Lip and Palate in Vietnam by the Korean Association of Maxillofacial Plastic and Reconstructive Surgeons

함태훈,신효근,김종렬,류동목,유선열,김경원,박영욱,정영수,Hahm, Tae-Hoon,Shin, Hyo-Keun,Kim, Jong-Ryul,Ryu, Dong-Mok,Ryu, Sun-Youl,Kim, Kyoung-Won,Park, Young-Wook,Jung, Young-Soo Korean Cleft Lip and Plate Association 2010 대한구순구개열학회지 Vol.13 No.1

대한악안면성형재건외과학회는 2004년도부터 매년 인도적 차원에서 의료 환경이 낙후된 Vietnam의 cleft lip and palate 환자들을 치료하기 위해 무료로 해외 진료 봉사 활동을 해왔다. 초창기 해외 진료 봉사 활동 당시 베트남 의료 기술 발달이 미비하여 준비해야 할 것들이 많았으나 이 후 베트남의 경제 발전과 함께 의료 시설 및 의료 기술이 발달함에 따라 준비 품목 등이 간단명료해지고 현지 지원 및 수술 준비도 원활히 진행되었다. 이러한 무료 의료 봉사 활동을 계기로 개발도상국의 낙후된 의료 시설 및 의료 기술 발전, 의료 혜택을 받지 못한 구순 구개열 환자의 정상적 안모 및 기능 회복, 조건 없는 의료 봉사 활동을 통한 민간외교 효과 및 양국간의 우호 증진 등의 성과가 있었다. 대한악안면성형재건외과학회에서는 2009년도 역시 베트남 National Institute of Odonto-stomatology 에서 11월17일부터 26일까지 cleft lip and palate 무료수술진료단(단장 신효근)을 보내 수술봉사 활동을 펼치고 돌아 왔다. 일반적인 구순구개열 뿐만 아니라 양측성 안면열(Bilateral Facial Cleft), 사경(Torticollis) 등의 희귀 기형을 포함하여 수술을 진행하였으며 총 31례의 수술을 성공적으로 마쳤으며 지난 6년 동안의 성과와 함께 이에 대한 보고를 하고자 한다.

중국 덕주 지역의 구순구개열 의료 봉사 활동 보고 및 치험례 발표

이원덕,이부규,최진영,김종렬,오용석,민병일,김명진,Lee, Won-Deok,Lee, Bu-Kyu,Cho, Jin-Young,Kim, Jong-Ryul,Oh, Yong-Seok,Min, Byoung-Il,Kim, Myung-Jin 대한악안면성형재건외과학회 2009 Maxillofacial Plastic Reconstructive Surgery Vol.31 No.5

Il Woong Cleft lip and palate foundation was founded in 1968 by Professor emeritus Byoung-Il Min. Since then the foundation has operated numerous cleft lip and palate patients not only in Korea but also in under-developed countries such as Vietnam, China, and Cambodia. In December 2005, the foundation was allowed as an incorporated association by Ministry of Foreign affairs and Trade, so that it could have official status. From March 6th 2009 to March 14th 2009, we conductp,d charity cleft lip and palate operations of 23 patients in areas of Deozhou, China. Hereby we present the results of operations.

골격성 III 급 부정교합자의 악교정수술후 안정성에 영향을 미치는 요소에 관한 연구

진경수(Kyung-Su Chin),김종렬(Jong-Ryul Kim),손우성(Woo-Sung Son) 대한치과교정학회 1997 대한치과교정학회지 Vol.27 No.1

골격성 III급 부정교합자의 악교정 수술에 의한 자기개념의 변화

설유석,손우성,박수병,김성식,김종렬,Seol, You-Seok,Son, Woo-Sung,Park, Soo-Byung,Kim, Seong-Sik,Kim, Jong-Ryul 대한악안면성형재건외과학회 2008 Maxillofacial Plastic Reconstructive Surgery Vol.30 No.4

Objective: This study was carried out to evaluated the psychologic changes of skeletal Class III malocclusion individuals by orthognathic surgery. Methods: One hundred and thirty seven adults skeletal Class III malocclusion individuals were selected for this study. Fifty two for pre-surgery group, forty two for 2-months after orthognathic surgery group and forty three for 6-months after orthognathic surgery group. Each group was investigated by questionnaires related to self-concept standard developed by Dr. Lee. The questionnaires included physical self-concept, ethic self-concept, characteristic self-concept, domestic self-concept, the social self-concept and capable self-concept. Each group was compared by one-way ANOVA. Results: Only the physical self-concept showed significant changes after orthognathic surgery, however it did not showed differences between after 2-months and after 6-months. But other self-concept did not show significant changes by orthognathic surgery. Conclusion: At first, it is expected that many variables related to self-concept were influenced by orthognathic surgery. But only physical self-concept showed significant change by orthognathic surgery.

혈관 확장증에 의한 상부위장관 출혈의 내시경적 치료

김태년,최선택,이학준,송영두,김영성,한재호,은종렬,장병익,정문관 대한소화기내시경학회 2000 Clinical Endoscopy Vol.21 No.3

Background/Aims: Angioectasia of the gastrointestinal tract have been recognized with increasing frequency as an important cause of acute and chronic gastrointestinal bleeding. The purpose of this study is to define the response of endoscopic treatment for bleeding angioectasia of upper gastrointestinal tract and to evaluate long term efficacy of endoscopic treatment. Methods: A clinical study was done on 18 patients (20 cases) of angioectasia bleeding of upper gastrointestinal tract who admitted to Yeungnam University hospital from January 1989 to October 1998. Endoscopic therapy was done by electrocauterizaton, laser therapy, O-band ligation. In cases of failure to achieve hemostasis after endoscopic retreatment, we have done operation or used antifibrinolytic agent. Results: The mean age was 60.6±11.2 years (range 31-77 years). Bleeding control was succeeded in 19 cases and one case was failed by endoscopic therapy. This patient was operated. Recurred bleeding was observed in 4 patients during long term fllow-up period. Bleeding was controlled after endoscopic re-treatment in two of four patients. The other patients (Osler-Weber-Lendu syndrome 2 patients) were periodically required of transfusion after endoscopic therapy. Tranexamic acid was given to these patients) Conclusions: Endoscopic therapy for bleeding angioectasia could reduce bleeding or make it stop, but repeated treatment was often necessary for multiple angioectasia. Tranexandc acid may be a useful treatment for refractory bleeding due to multiple angioectasia, such as Osler-Weber-Lendu syndrome.

복수를 동반한 간경변증에서 뇌혈류저항의 증가

김성국,김종렬,최용환,정준모,전성우,권영오,이응주,탁원영,염현규 대한간학회 1999 Clinical and Molecular Hepatology(대한간학회지) Vol.5 No.1

Background/Aims : Portal hypertension in cirrhosis is associated with a hyperdynamic circulation, which is characterized by hypervolemia, high cardiac output, arterial hypotension and low peripheral vascular resistance. These circulatory abnormalities are thought to be secondary to a splanchnic arteriolar vasodilation related to the increase in portal pressure. Studies assessing regional hemodynamics in patients of cirrhosis with ascites have shown vasoconstriction in the renal circulation and in peripheral vascular territory. This study was designed to assess the cerebral vascular resistance in cirrhotic patients with ascites. Methods : The resistive index in the middle cerebral artery and in a renal interlobar artery were measured by Doppler ultrasonography in 12 cirrhotic subjects without ascites, 23 cirrhotic subjects with ascites, and 8 healthy subjects. The arterial blood pressure and plasma renin and norepinephrine concentration, which reflect the activity of the renin-angiotensin and sympathetic nervous systems respectively, were also measured. Results : The resistive index in the middle cerebral artery were significantly higher in cirrhotic patients with ascites (0.58±0.04, mean standard deviation) than in cirrhotic patients without ascites (0.53±0.02, P$lt;0.01) and in control subjects (0.50±0.05, P$lt;0.01). The resistive index in the middle cerebral artery showed direct correlation with renal resistive index (r = 0.52, P$lt;0.01), plasma renin activity (r = 0.44, P$lt;0.01) and norepinephrine (r = 0.33, P$lt;0.05). The resistive index in the middle cerebral artery showed an inverse correlation with mean arterial pressure (r = -0.59, P$lt;0.01). Conclusion : The results suggest that in patients of cirrhosis with ascites, independent of the amount of ascites, there is a cerebral vasoconstriction which is related with the arterial hypotension and the overactivity of vasoconstrictor systems. (Korean J Hepatol 1999;5:33-42)