정적용기내의 스월유동특성 해석

趙成濟 서라벌대학 1992 논문집 Vol.6 No.-

Swirl velocity, turbulence intensity and turbulence scale were investigated in order to analyze the characteristics of swirl flow which was created in constant volume vessel. Flow velocity was measured by use of hot wire anemometer. Turbulence intensity was in proportion to mean flow velocity regadless of swirl velocity. And integral time scale and integral length scale have inverse propotional relation with swirl velocity regardless of measurment position.

노인정신장애 평가척도(Psychogeriatric Assessment Scale)의 한국판 표준화 연구

조맹제,박임순,신영민,김무진,정희연,정은기,최용성,조성진,서국희,함봉진 大韓神經精神醫學會 2000 신경정신의학 Vol.39 No.1

연구목적 : 본 연구는 치매와 우울증을 다차원적으로 평가할 수 있는 도구인 Psychogeriatric Assessment Scale(PAS)의 한국판(PAS-K)을 개발하기 위한 것이다. 방 법 : 번역, 역번역, 그리고 세차례의 예비조사를 통하여 PAS-K를 제작하였다. 60세 이상의 노인 291명(임상환자군 : 58명, 지역사회노인군 : 168명, 수용시설 거주자 : 67명)과 그들의 정보제공자들을 대상으로 PAS-K, Geriatric Depression Scale(GDS), Korean version of Mini-Mental State Examination(MMSE-K), Hamilton Rating Scale for Depression(HRSD), 그리고 Hachinski Ischemic Score 를 적용하고, Diagnostic Interview chedule(DIS-Ⅲ-R)을 사용하여 치매와 우울증을 진단하였다. PAS-K의 신뢰도와 타당도를 평가하고, 예민도와 특이도, Kappa값, 그리고 ROC커브 분석법을 이용하여 PAS-K의 6개의 소척도들(피검자면접 : 인지기능 장애척도, 우울척도, 뇌졸중척도, 정보제공자면접 : 인지기능 저하척도, 행동변화척도, 뇌졸중척도)의 최적 절단점을 구하였다. 결 과 : PAS-K는 높은 내적 일관성을 보였고, 검사자간 신뢰도도 만족할 만한 수준이었다. PAS-K의 소척도들을 다른 표준화된 검사도구들과 비교하였을 때 인지기능 장애척도와 인지기능 저하척도는 MMSE-K와, 우울척도는 GDS 및 HRSD와 유의한 상관관계를 보였으며, 뇌졸중척도는 Hachinski Ischemic Score와 통계적으로 의미있는 상관관계를 보였다. 최적절단점은 인지기능 장애척도 10점, 인지기능 저하척도 3점, 우울척도 5점, 피검자면접과 정보제공자 뇌졸중척도 모두 1점, 그리고 행동변화척도 2점으로 추정하였다. 결 론 : 본 연구를 통해 PAS-K의 신뢰도와 타당도가 검증되었고, 노인정신의학 역학연구나 보건분야에서 치매와 우울증의 임상경과관찰 및 일차 선별도구로서 유용하게 사용될 수 있게 되었다. Objectives : This study was designed to develop the Korean version of the Psychogeriatric Assessment Scale(PAS-K), a multidimensional screening tool for the dementia and depression. Methods : Through three times preliminary trials, the authors translated PAS into Korean. The PAS-K, Geriatric Depression Scale, Hamilton Depression Rating Scale, Hachinski Ischemic Scale and Mini-Mental State Examination-Korean version were administered to 291 subjects over the age of 60 and the same number of their informants(67 subjects were institutionalized, 168 subjects were in community, 58 subjects were psychiatric hospital patients). And the Diagnostic Interview Schedule(DSM-Ⅲ-R) was independently administered to exactly diagnose dementia and depression. The reliability and validity test, optimal cut-off point estimation for six each scale and ROC curve analyses were done to investigate the diagnostic validity of PAS-K. Results : Internal consistency and interrater reliability of the PAS-K were high. Concurrent validity of each scales of PAS-K was good in being measured with other standardized scales. The optimal cut-off points of each scale of the PAS-K were estimated as follows : 1) Stroke Scale of subject interview : 1, 2) Cognitive Impairment Scale of subject interview: 10, 3) Depression Scale of subject interview : 5, 4) Stroke Scale of informant interview : 1, 5) Cognitive Decline Scale of informant interview : 3, and 6) Behavioral Change Scale of informant : 2. conclusions : The PAS-K was valid and reliable screening tools for detecting dementia and depression. Therefore the PAS-K could be widely and extensively used in psychogeriatric epidemiological research or clinical setting of primary screening for dementia and depression.

정신보건관련시설 입원(소)자의 주요 정신장애 유병률 : 전국 20개 시설의 입원(소)자를 대상으로

조성진,조맹제,서동우,함봉진,홍진표,배재남,이준영,이동우,박종익,전홍진,김성주,김용익 大韓神經精神醫學會 2004 신경정신의학 Vol.43 No.6

Objectives : One of the objectives of this study is to estimate the prevalence rates of psychiatric diagnoses in the combined populations of psychiatric hospitals, psychiatric nursing facilities and homeless asylums using the Korean version of the Composite International Diagnostic Interview (K-CIDI), which is a comprehensive and fully standardized interview schedule to assess psychiatric disorders for diagnosis. The Other objective is to compare with previously studied prevalence rates of Psy-chiatric diagnoses using the results of this study. Methods : The study subjects, aged from 181o 64 years, were randomly selected from 64,582 institutionalized population of psychiatric hospitals, Psychiatric nursing facilities and homeless asylums as of 30, June, 2001. Twelve trained interviewers administered the K-CIDI to the selected respondents. A total of 1,875 respondents (male 1,194, female 681) completed the interview. Results : The lifetime and one year prevalences of any diagnosis excluding nicotine dependence · withdrawal, anxiety disorder, eating disorder, somatoform disorder were 88.2% (male 88.1%, female 88.3%), and 65.8% (male 62.7%, female 73.7%), respectively. The lifetime and one year prevalences of schizophrenia and other psychotic disorders were 78.5% (male 75.3%, female 83.7%), and 56.8% (male 51.9%, female 64.8%), respectively. The lifetime and one year prevalences of alcohol use disorder (dependence/abuse) were 26.7% (male 37.9%, female 8.3%), and 8.7% (male 12.8%, female 2.1%), respectively. The lifetime and one year prevalences of mood disorder were 18.1% (male 13.5%, female 25.8%), and 10.4% (male 7.2%,female 16.9%), respectively. The lifetime and one year prevalences of schizophrenia and other psychotic disorders were comparable with the 2001 community survey by 1.19% to 1.32%, and 0.51% to 0.61%, respectively. The lifetime and one year prevalences of schizophrenia were also comparable by 0.16% to 0.28%, and 0.16% to 0.25%, respectively. There were no significant changes of prevalence rates when correction were applied to other psychiatric diagnosis. Conclusion : The results of this study could be used for evaluating the distribution of psychiatric diagnoses in mental health related facilities and for planning mental health policies.

한국 정신장애의 역학 조사 연구[I] : 각 정신장애의 유병률

조맹제,함봉진,김장규,박강규,정은기,서동우,김선욱,조성진,이준영,홍진표,최용성,박종익,이동우,이기철,배재남,신정호,정인원,박종한,배안,이충경 大韓神經精神醫學會 2004 신경정신의학 Vol.43 No.4

Objectives : This study aims to estimate the prevalence of the DSM-IV psychiatric disorders in Korean population using the Korean version of Composite International Diagnostic Interview (K-CIDI). Methods : Subjects were selected by taking multi-stage, cluster samples of 7,867 adult household residents, 18 to 64 years of age, in ten catchment areas. Total 78 trained interviewers administered the K-CIDI to the selected respondents, from June 1 to November30,2001. Results : Total 6,275 respondents completed the interview. Some 33.5% of respondents reported at least one lifetime disorder, 20.6% reported at least one-year disorder, and 16.7% reported at least one-month disorder. The most common lifetime disorders were alcohol abuse/dependence (17.24%), nicotine dependence/withdrawal (11.19%), specific phobia (5.16%), and major de-pressive disorder (4.25%). The lifetime prevalence of substance abuse/dependence (0.25%) and schizophrenia (0.16%) was very low. Nicotine and alcohol use disorder showed very high male/female ratio. Mood disorder and anxiety disorder were more prevalent among female than male. Conclusion : The prevalence of psychiatric disorders was high. In comparison with other studies, remarkable differences in distributions of psychiatric disorders across the areas and times were observed.

병렬 프로그램의 공유 메모리 할당 및 참조 패턴

조성제 단국대학교 1998 論文集 Vol.32 No.-

False sharing is one source of unnecessary overhead being of no help to keep the memory coherency in distributed shared memory(DSM) systems. False sharing of a memory block occurs when two different data items, not shared but accessed by two different processes, are allocated to a single block, and therefore the access and allocation patterns of shared blocks have a major effect on the degree of false sharing and the performance of DSM systems. In this paper we analyze the allocation and reference patterns of shared data objects in parallel applications communicating with each process by dynamically allocated shared heap. These analyses may be useful for quantitatively comparing typical parallel applications and for systematically studying the effect on performance of memory allocation techniques for reducing false sharing.

한국어판 Composite International Dianostic Interview(K-CIDI)의 개발

조맹제,함봉진,서동우,홍진표,배재남,김장규,이동우,조성진 大韓神經精神醫學會 2002 신경정신의학 Vol.41 No.1

연구목적 : 본 연구는 국제적인 정신장애 진단도구인 Composite International Diagnostic Interview(CIDI)를 한국의 사회문화적 상황에 적합하게 번역하고 신뢰도 및 타당도를 평가하여 한국어판으로 개발하기 위한 것이다. 방 법 : CIDI는 정신장애를 평가하고 진단할 수 있는 포괄적이고, 완전히 표준화된 진단도구로 훈련받은 일반인들이 적용할 수 있기 때문에 대규모 역학조사에 적합하다. 세계보건기구에서 제공하는 CIDI 번역 지침에 따라 한국어판 CIDI(K-CIDI)를 제작하였다. 영어권과 한국의 언어 및 사회문화적 차이를 고려하여 번역 및 개정을 하였고 역번역을 통하여 원본의 의미와 일치하는지를 확인하였다. 임상환자를 135명과 일반인 5명을 대상으로 신뢰도와 타당도 검사를 실시하였다. 두 명의 평가자가 K-CIDI를 이용하여 동일한 대상자를 동시에 면담하고 일주일 뒤에 재검사를 실시하였다. K-CIDI로 검사를 받은 대상자들을 정신과 전공의와 임상심리사가 한국어판 Structured Clinical Interview for DSM-Ⅳ를 이용하여 진단을 내렸다. 두 가지 진단의 일치도에 대한 kappa값을 산출하였다. 결 과 : CIDI의 번역에서 한국어 표현이 복잡하고 긴 문항은 두 개의 문장으로 분리하였고, 성과 관련된 표현과 의료체계 및 의료추구행태에서 사회문화적 차이를 반영하였다. 공포장애의 대상과 알코올 및 물질의 종류도 한국의 실정에 맞게 조정하였다. 현장 검사와 역번역 과정에서 K-CIDI가 적절하게 제작된 것으로 평가되었다. K-CIDI의 평가자간 신뢰도 검사는 140명에 대하여 이루어졌고 kappa값은 진단에 따라 0.86∼1.00범위였다. 검사/재검사 신뢰도 검사는 47명에 대해 이루어졌고 kappa값은 진단에 따라 0.42∼0.89였다. K-CIDI의 타당도 검사는 50명에 대해 이루어졌고 kappa값이 진단에 따라 0.50∼1.00의 범위였다. 결 론 : K-CIDI는 한국의 사회 문화적 배경에 적합하게 제작되었고 신뢰도 및 타당도 검사에서 역학연구에 적절한 진단도구로 평가되었다. Objectives : This study aims to develop a Korean version of the Composite International Diagnostic Interview(K-CIDI). Methods : The Composite International Diagnostic Interview(CIDI) is a comprehensive, fully standardized interview that can be used to assess psychiatric disorders and provide diagnoses. The K-CIDI was developed according to the guidelines provided by the WHO. The reliability and validity of the K-CIDI was evaluated by examining 135 psychiatric patients and five community residents. Subjects were jointly interviewed twice with a one-week interval. A psychiatric resident and clinical psychologist jointly determined clinical diagnoses using the Structured Clinical Interview for DSM-Ⅳ. Results : Notable modifications were done on sex-related expression, health system and help seeking behavior, subjects for phobic disorder, and kinds of alcohol and substance. Long and complex questions were divided into two or more questions. Field test and back-translation of the K-CIDI confirmed the appropriateness of the translation of the CIDI. The inter-rater reliability, test/retest reliability, and validity of the K-CIDI indicated kappa values ranging from 0.86-1.00, 0.42-0.89, and 0.50-1.00, respectively. Conclusion : The K-CIDI was deemed to be appropriate for the sociocultural background of Koreans. The reliability and validity of the K-CIDI were judged to be exceptionally acceptable.

한국 주요정신장애의 유병률 및 관련요인 : 2006 전국정신질환역학조사

조맹제,장성만,함봉진,정인원,배안,이영문,안준호,원승희,손정우,홍진표,배재남,이동우,조성진,박종익,이준영,김진영,전홍진,이해우 大韓神經精神醫學會 2009 신경정신의학 Vol.48 No.3

Objectives The aims of this study are to estimate the prevalence of the DSM-IV psychiatric disorders in the Korean population using the Korean version of Composite International Diagnostic Interview (K-CIDI), and to compare those with previous studies. Methods The Korean Epidemiologic Catchment Area study Replication (KECA-R) was Conducted between August 2006 and April 2007. The sampling of the subjects was carried out across 12 catchment areas. A multistage, cluster sampling design was adopted. The target Population included all eligible residents aged 181o 64 years. Face-to-face interviews were conducted with the Korean version of Composite International Diagnostic Interview (K-CIDI) based on the DSM-IV (N=6,510, response rate=81.7%). Results A total of 6,510 participants completed the interview. The lifetime and 12-month prevalence rates for all types of DSM-IV disorders were 30.0% and 17.3%, respectively. Those of Specific disorders were as follows : 1) alcohol use disorder, 16.2% and 5.6% ; 2) nicotine use disorder, 9.0% and 6.0% ; 3) specific phobia, 3.8% and 3.4% ; 4) major depressive disorder, 5.6% and 2.5% ; and 5) generalized anxiety disorder, 1.6% and 0.8%. Data relating to nicotine and alcohol use disorder revealed a very high male/female ratio. Mood disorder and anxiety disorder were more prevalent among females than males. Conclusion The prevalence of psychiatric disorders was high. In comparison with other studies, remarkable differences in the distribution of psychiatric disorders across the country and times were observed.

일 장기 수용시설 노인들의 인지기능장애와 우울증상의 유병율

조맹제,함봉진,이부영,김성윤,신영민,이창인 大韓神經精神醫學會 1998 신경정신의학 Vol.37 No.5

목 적 : 본 연구는 수용시설의 노인들에서 인지기능장애와 우울증상의 유병율을 조사하기 위한 것이다. 방 법 : 한국의 한 수용시설인 꽃동네에 거주하는 60세 이상 노인 169명을 대상으로 한국판 Mini-Mental State Examination(MMSE-K). Short Portable Mental State Questionnaire(SPMSQ), 축약판 Geriatric Depression Scale(SGDS). 그리고 the Center for Epidemiologic Studies Depression (CES-D)을 적용하였다. 결 과 : 전체 169명중 153명(남자=72명, 여자=79명, 그리고 누락=2명)이 검사를 완성하였다. 연령의 범위는 60에서 102세였고, 평균연령은 74.17±8.27(남자71.76±8.14. 여자76.14±7.78)세였다. 교육기간의 범위는 무학에서 16년이었고, 평균교육기간은 3.04±3.93(남자 4.13±4.23, 여자 2.01±3.38)년이었다. 인지기능장애의 유병율은 MMSE-K≤23의 기준으로 56.2%, SPMSQ≤6의 기준으로 26.1% 로 평가되었다. 비교적 분명한 인지기능장애의 기준으로 MMSE-K≤19를 적용하였을 경우 유병율은 25.5%로 이는 SPMSQ≤6을 기준으로 하여 얻은 결과와 유사한 수준이었다. 우울증상의 유병율은 SGDS≥10의 기준으로 19%, CES-D≥25의 기준으로 23.5%로 평가되었다. 비교적 가벼운 우울증상까지 선별하기 위하여 SGDS≥8을 기준으로 할 경우 유병율은 39.2%로 이는 CES-D≥20을 기준으로 하여 얻은 결과와 일치하는 수준이었다. MMSE-K와 SPMSQ, SGDS와 CES-D, MMES-K와CES-D, MMES-K와 SGDS, 그리 고·SPMSQ와 SGDS 사이에 의미있는 상관관계가 관찰되었다. 결 론 : 수용시설 노인들에서 인지기능장애와 우울증상의 유병율은 매우 높은 수준이며, 이러한 결과는 수용시설 노인들에 대한 보다 집중적의 의료서비스가 필요함을 시사한다. Objectives : This study was to investigate the prevalence of cognitive impairment and depressive symptomatology among the long-term institutionalized elderly people. Methods : Mini-Mental State Examination-Korean version(MMSE-K), Short Portable Mental State Questionnaire(SPMSQ), Short version of Geriatric Depression Scale(SGDS), and the Center for Epidemiologic Studies Depression(CES-D) were administerd to 169 elderly residents in an institution, 'Got Dong Rae'. Results : One hundred fifty-three(males=72, females=79, and missing=2) completed the entire examination. Age ranged from 60 to 102 years and the mean of age was 74.17±8.27(males 71.76±8.14, females 76.14±7.78) years. Duration of education ranged from 0 to 16 years and the mean of duration of education was 3.04±3.93(males 4.13±4.23, females 2.01±3.38) years. The prevalence of cognitive impairment was estimated as 56.2% by MMSE-K≤23 and 26.1% by SPMSQ≤6. The prevalence of relatively definite cognitive impairment defined by MMSE-K≤19 was 25.5%, which was similar to the result achieved by using SPMSQ≤6. The prevalence of depressive symptomatology was estimated as 19% by SGDS≥10 and 23.5% by CES-D≥25. In the case of using SGDS≥8 as cutoff-point to screen mild as well as severe depressive symptomatology, the prevalence was 39.2%. It was identical to the result achieved by using CES-D≥20. Significant correlations were observed between MMSE-K and SPMSQ, between SGDS and CES-D, between MMSE-K and CES-D, between MMSE-K and SGDS, and between SPMSQ and SGDS. Conclusion : The prevalencies of cognitive impairment and depressive symptomatology were high in institutionalized elderly people. This results suggests that more intensive mental health care is needed for long-term institutionalized elderly people.

분산 공유 메모리 시스템에서의 페이지 교체 정책

조성제 단국대학교 1998 論文集 Vol.33 No.-

Distributed Shared Memory(DSM) systems employ page migration and page replication approaches which take advantage of the locality of reference and concurrency. Under a DSM system where shared pages can be replicated on several nodes, it can happen that a page must be evicted from memory to make room for a newly requested page. When this situation occurs, two subproblems immediately arise: which page to evict and where to put it. Also, because high speed network technology facilitates efficient transmission of dta between computers, a process can benefit from data residing in the memory of other computers. The drastic improvement in network performance has brought about a remote caching architecture that processors attempt to evict a page to memory of remote sites before attempting to evict the page to local disk. To study paging behavior of parallel applications on distributed systems, the paper evaluates the performance of page replacement algorithms such as LRU, LRU2, FIFO, and LFU. The experimental results show that LRU appears to be a good replacement policy for parallel programs. For fft program, LRU2 which evicts the least­recently used page out of replicated pages shows maximal reduction in page fault rate.

분산 공유 메모리 시스템에서 거짓 공유를 줄이는 메모리 할당 기법

조성제 단국대학교 1999 論文集 Vol.34 No.-

Distributed Shared Memory(DSM) systems employ block migration and block replication approaches which take advantage of the locality of reference and concurrency. When one processor repeatedly reads a data item that another is regularly updating, those approaches suffer the block-bouncing effect, where blocks frequently move between competing processors. The problem can be further complicated if false sharing exists among processors. False sharing of a block occurs when two different data items, not shared but accessed by two different processes, are allocated to a shingle block. In write-invalidate protocols, false sharing can lead to unnecessary invalidations. In write-update protocols, when several writers falsely share data items they may cause them to be overwritten with older versions. So, false sharing is an important factor in degrading system performance. In case that shared data objects for parallel programs are dynamically allocated, we analyzed allocation and reference patterns of the shared objects in connection with false sharing. We also propose a new allocation scheme which can reduce a considerable amount of false sharing faults and evaluate the existing memory allocation techniques for reducing false sharing faults in DSM systems. Our allocation scheme reduces the number of false sharing faults with a little additional memory space.