다중처리시스템에서 최소비용을 갖는 태스크 할당기법

강영욱 대구보건대학 1997 대구보건대학 論文集 Vol.17 No.-

In multiprocessor system, most application problems can be divided into tasks for parallel execution. Scheduling these tasks can be either static or dynamic. In static scheduling, tasks are assigned to processors in compile-time. However, it is very difficult to estimate the execution time of each task before execution starts. In case that the execution times of individual tasks vary from the estimated values, optimality of the static scheduling will be lost. Dynamic task allocation can reduce the effect. But it is done during run-time, the run-time overhead becomes a critical factor. Many efforts have been made to develop low-overhead techniques to dynamically allocate tasks during job execution. With dynamic task allocation technique, it is very critical to decide which tasks to execute. This paper proposes a task selection criterion by which a task is selected from task pool for execution. It was tested and compared with previous work. It was shown that the technique with the proposed criterion has similar performance to the previous work and better than the original static schedules.

혈관내 카테터 및 수액요법과 관련된 감염

최강원,송영욱 대한감염학회 1987 감염 Vol.19 No.3

아동기 가정 내 스트레스가 공동의존성에 미치는 영향 및 공동의존성과 정신병리와의 관련성

곽운환,손지욱,한규희,박철수,김장락,김붕년,김봉조,강여화,하형래 대한생물치료정신의학회 2003 생물치료정신의학 Vol.9 No.1

연구목적: 본 연구는 공동의존성에 영향을 미치는 아동기 가정내 스트레스 요인과 공동의존성과 다른 병리와의 연관성을 규명하고자 하였다. 더불어 특정한 질환에서의 공동의존성의 평가가 가지는 의의를 탐색해 보고자 하였다. 방 법: 연구 대상은 정상 일반인 남성집단 88명과 알코올리즘 남성 집단 76명으로 구성되어 있다. 평가도구는 본 저자가 직접 작성한 '아동기 가정내 스트레스 요인 측정용 설문'과 공동의존 척도(RPS), 간이증상 진단검사(SCL-90-R)를 사용하였다. 통계적 분석은 Mann-Whitmey test, Kruskall- Wallis test, Multiple linear regression analysis, Spearman correlation analysis를 이용하였다. 결 과: 1) 정상 일반인 군과 알코올리즘 군의 공동의존성 평균값은 각각 49.12점(표준편차=15.41)과 88.31점(표준편차=17.48)이었다. 2) 정상 일반인 군에서는 '아동기 부모 사별'(p<0.01) '부모의 알코올리즘'(p<0.01) '부모의 상습적 구타'(p<0.01)의 3가지 요인에서, 알코올리즘 군에서는 '어린시절 부모 사별'(p<0.01) '부모의 알코올리즘'(p<0.01) '부모의 상습적 구타'(p<0.01) '부도의 도박'(p<0.01) '사회 병질자 부모의 존재'(p<0.05)의 5가지 요인에서 스트레스 유무에 따라 공동의존성에 유의한 차이를 보였다. 3) 두 집단 동시에 SCR-90-R의 8개 소척도 중 '대인관계 예민성'이 공동의존성과 가장 높은 연관성(rs>0.06, p<0.01)을 보였다. 이외에도 '우울증' '불안증'등이 두 집단 모두에서 통계적으로 유의한 연관성을 보였다. 결 론: 본 연구는 부모의 알코올리즘뿐만 아니라 여러 가정 내 스트레스 요인이 공동의존성의 발생에 영향을 미칠 수 있음과 공동의존성이 높은 집단이 다른 정신과 질환을 동반할 가능성이 높음을 증명한다고 할 수 있다. Objectives : The aim of this study was to examine the relationships of codependency with family stressors in childhood and psychopathology. Methods : Subjects were a group of 88 normal adult males and a group of 76 alcoholic males. The degree of codependency was assessed with the Korean version of Recovery Potential Survey(RPS). All subjects filled out questionnaires regarding demographic information and family stressors. The psychopathology was measured by self-administred questionnaires using Symptom Check List-90-Revision(SCL-90-R). Results : 1) There were no significant differences in codependency levels by sociodemographic characteristics in two groups, but obvious difference in mean of codependency scores(normal group : 49.12±15.41, alcoholism group : 88.31±17.48). 2) There were significant differences in codependency levels between the presence and absence of parental physical abuse, parental death, and parental alcoholism(p<0.01) in both groups. 3) Among family stressors, parental physical abuse had the largest contribution to codependency level in multiple linear regression. 4) There were significant correlations between the codependency levels and the scores of SCL-90-R's subscales of interpersonal sensitivity, depression, and anxiety in both groups. Conclusion : The codependency levels were related to some family stressors such as parental physical abuse, parental death, and parental alcoholism and the high-level codependency was correlated with higher level of psychopathology in both normal and alcoholism group. These results suggested that various family stressors, as well as parental alcoholism may be predictors of codependency, and codependency also may be a predictor of other psychiatric disorders.

피부 병변을 동반한 악성조직구증 1예

조은택,박용관,김진호,강정원,천영욱,전익섭,박유환,전춘해 조선대학교 1995 The Medical Journal of Chosun University Vol.20 No.1

Malignant histiocytosis, originally described in 1939 as histiocytic medullary reticulosis by Scott and Robb-Smith, is a rare histiocytic proliferative disorder that often shows an acute onset and used to progress to death within a few months. This disorder characterized clinically by fever, generalized weakness, lymphadenopathy and hepatosplenomegaly, and shows a variable range of pancytopenia. Extranodal involvement is common, with an incidence ranging from 50% to as high as 90%, skin involves8ment was noted in 10% to 15%. Typical skin lesions were mainly founded in extremity. i.e. erythematous papule and nodule occasionally become to necrosis and ulceration. We experienced one case of malignant histiocytosis in a 46-years-old female. The major clinical findings are fever, malaise, hepatosplenomegaly and erythematous skin lesion. In the laboratory study, pancytopenia is noted on the peripheral blood. And also aggregation of many atypical histiocytes were shown on skin and bone marrow biopsy. So we reported one related case with malignant histiocytosis as well as reviewing literature .

혈액 투석 환자에서 중심정맥 협착에 대한 스텐트 삽입술 : Wallstent Placement

임대승,노상필,이유선,정승현,김보영,이정우,강정아,김정희,이민수,정준용,최시완,정진옥,성인환,이강욱,신영태 충남대학교 의과대학 의학연구소 2002 충남의대잡지 Vol.29 No.1

Stenosis of central vein is a common complication arising after percutaneous subclavian vein catheter insertion performed for temporary vascular access in chronic renal failure patients undergoing hemodialysis. There are several treatment methods for the condition like percutaneous angioplasty(PTA), stent insertion, and surgery, but recent trend is toward PTA and stents. Among the patients diagnosed with chronic renal failure from March 1993 to May 2002 and undergoing hemodialysis through AV fistula, the 14 Patients in whom central vein stenosis arose were selected for the study. A total of 28 percutaneous interventions(5 PTA and 23 stent placement) were performed, and restenosis rate and the time taken till the restenosis in de novo lesions and instant lesions were compared. All 28 cases were operated successfully. The 14 cases that received both anigioplasty and stent placement initially. (de novo lesion : 14 cases), Among the 10 cases with de novo lesion that followed up more than 1 year, 3 cases are currently undergoing hemodialysis without restenosis, and the remaining 7 cases have recurred stenosis with the mean time to restenosis of 10.9 months. In the 7 cases in whom stenosis recurred, 11 interventions were done(instent lesion: 11 cases). 4 of these were using only ballon angioplasty with 100% restenosis rate and the mean time of 3 months until restenosis. The remaining 7 cases were using both balloon angioplasty and stent placement, also with 100% restenosis rate but with the mean time of 12 months until restenosis, which was later than the group receiving only balloon angioplasty. In treating the patients with central vein stenosis, stent placement seems to be more advantageous over PTA in terms of restenosis rate and the mean duration of patency. In the case of instent lesion, inserting the stent for the second time after stenosis recurred lengthened the duration of patency compared to performing balloon angioplasty alone.

λ-경쇄형 다발성 골수종 1예

박용관,김태원,장영,김진호,강정원,천영욱,박유환,정춘해 조선대학교 1995 The Medical Journal of Chosun University Vol.20 No.1

Multiple myeloma is a disease caused by neoplastic plasma cells that synthesize abnormal amouts of immunoglobulin or immunoglobulin fragments. Light chain myeloma are regarded as a separate category characterized by a more malignant clinical course. Light chain myelomas are said to grow fastest of all and are associated with more osteolytic lesions, more hypercalcemia, and a higher incidence of renal failure and amyloidsis than either the IgG, IgA varienties The authors experienced a case of patients with λ-light chain myeloma. A 43-year-old male patient admitted to our hospital with the chief complaint of both rib and lower back pain. The radiologic findings showed multiple pathologic fracture in ribs. osteolytic lesions in 2nd, 3rd cervical spineimmuture plasma cells. Serum electrophoresis showed normal finding. Urine electrophoresis evealed an M-spike. Urine immunoelectrophoress demonstrated λ-monoclonal protein. With the cycle of melphalan, prednisone and α-interferon chemotherapy improved of pain was observed. So we reported the case with brief review of previous literature.

Gene expression profiling of KBH-A42, a novel histone deacetylase inhibitor, in human leukemia and bladder cancer cell lines

KANG, MOO RIM,KANG, JONG SOON,YANG, JEONG WOOK,KIM, BO GEUN,KIM, JIN-AH,JO, YEONG NANG,LEE, KIHO,LEE, CHANG WOO,LEE, KI HOON,YUN, JIEUN,KIM, HWAN MOOK,HAN, GYOONHEE,KANG, JONG SEONG,PARK, SONG-KYU Spandidos Publications 2012 Oncology letters Vol.3 No.1

A case of acute pericarditis with hemophagocytic syndrome, cytomegalovirus infection and systemic lupus erythematosus (초)

( Sang Wook Kang ),( Chang Mo Kwon ),( Yong Wook Jung ),( Dae Young Yun ),( Hyun Do Kim ),( Hee Soon Cho ),( Yeong Hoon Hong ),( Joon Hyuk Choi ),( Choong Ki Lee ) 대한내과학회 2008 대한내과학회 추계학술대회 Vol.2008 No.-

정보 중심 네트워크에서 컨텐츠 인기도에 기반한 컨텐츠 캐싱 최적화 방안

강민욱(Kang Min Wook),강모세(Kang Mo Se),서동영(Seo Dong Yeong),정윤원(Chung Yun Won) 한국통신학회 2018 한국통신학회 학술대회논문집 Vol.2018 No.6

DAG의 병렬처리를 위한 매핑 전략

강영욱(Kang Yeong-Wook),양승복(Yang Seung-Bok),허정연(Hur Jung-Yeon) 한국정보과학회 1993 한국정보과학회 학술발표논문집 Vol.20 No.2

본 논문에서는 DAG(Directed Acyclic Graph)으로 모델화된 태스크의 서브 태스크들은 특정 라우팅 물에 관계없이 동종의 프로세서들로 구성된 임의의 병렬 시스템상으로 최적 매핑하는 문제를 연구하였다. DAG을 프로세서 네트웍에 매핑하는 서브 태스크 할당의 최적성을 평가하기 위한 목적 함수를 정의하고 이에 따라 프로세서를 선택하여 시뮬레이션하였으며, 시스템 토폴로지는 3차원 하이퍼큐브를 대상으로 하였다. 처리 결과, 제시된 매핑의 태스크에 대한 실행 완료시간 (makespan)은 최적 매핑에 ~75% 이내로 접근함을 알 수 있었다.