경부 청소술 후의 승모근기능

박준명,박동식,정광익,이언석,노영수 大韓再活醫學會 1998 Annals of Rehabilitation Medicine Vol.22 No.2

초음파현미경에서 V(z)곡선의 시뮬레이션과 열화평가에의 응용

조동수,박익근,임재생,안형근,심우식,김홍준 한국비파괴검사학회 2004 학술대회 논문집 Vol.- No.-

DC-DC Converter의 效率特性

김수식,조준익 群山大學校 情報通信技術硏究所 1998 情報通信技術硏究論文集 Vol.2 No.-

There is necessity for doing that high frequency switching to a small size and light weight devices for switching source on the DC-DC converter. we should be require examination and have discussed on this program for long time. For leakage inductance of transformer coil in high frequency circuit, in case of switching the evil effects attendant upon being excessive low voltage and large current have unexpected attack by changing current that switching losses and surge voltage losses have occurred. therefore, we have take care of semiconductor sw from this surge voltage and to protect the noise power generated particularly. In this paper we tried to obtained good condition about repress effect of surge voltage by construction of simple circuit and make satisfactory progress none-loss of zero voltage switching. we have research to clear away every obstacles by measurement immediately and the characteristics of the high degree of efficiency for DC-DC converter driving.

한국어 판 구조화 임상면담도구 개발 : 신뢰도 연구

한오수,안준호,송선희,조맹제,김장규,배재남,조성진,정범수,서동우,함봉진,이동우,박종익,홍진표 대한신경정신의학회 2000 신경정신의학 Vol.39 No.2

연구목적: 정신장애의 정확한 진단과 평가는 임상에서뿐만 아니라 신뢰성 있는 연구를 위해서도 매우 중요하다. Structured Clinical Interview for DSM-IV(SCID)는 임상전문가들이 사용하는 진단도구로서, 비교적 짧은 시간에 정확한 진단을 내릴 수 있다. 본 연구는 한국어판SCID를 개발하고 그 신뢰도를 평가하기 위해 수행되었다. 방법: 국문학자가 포함된 번역위원회를 통하여 연구용판 SCID를 번역한 후, 정신과 의사 2인과 임상심리학자 1인에게 한국어판SCID 실시방법을 교육시킨 뒤 한국어판SCID를 이용한 면담의 평가자간 신뢰도 (interrater reliability)를 검증하였다. 면담 대상은 1999년 2월에서 3월까지 2개 병원 정신과에 치료중인 환자 90명(남:41명, 여:29명)이었다. 결과: 현재 장애(current disorder) 평가에서 주요 우울장애, 기분부전장애, 정신분열병, 알코올 남용 및 의존, 기타 물질 남용 또는 의존, 여러 불안장애들 및 섭식장애 등과 같은 대부분 장애의 kappa값은 .70이상으로 매우 높았다. 그 이외의 양극성 장애, 망상장애, 광장공포증, 감별 불능 신체화 장애 및 건강염려증의 kappa값도 .69에서 .40사이로 수용할 수 있는 정도였다. 평생 장애(lifetime disorder)에서는 양극성 장애(k=.69)와 감별 불능 신체화장애(k=.59)를 제외한 다른 모든 장애의 kappa값이 .70이상이었다. K-SCID 면담시 Ⅰ축 질환에 대하여 흔하게 다중 진단이 내려졌으며, 평균 진단 수는 1.5∼1.7개로 나타났다. 결론: 한국어판 SCID는 신뢰도가 높은 진단도구로 생각되며, 향후 정신질환의 정확한 진단과 임상연구에 유용하게 사용될 수 있다. Objectives: Accurate diagnosis and assessment for psychiatric disorders is crucial for research, as well as for clinical practice. Structured Clinical Interview for DSM-Ⅳ(SCID-RV) is a less time-consumimg and more accurate structured diagnostic interview form. It can be used by clinical professions and is known for a reliable diagnostic tool. Present study was conducted to develop Korean version of SCID-RV and to test the inter-rater reliability. Methods: The authors have translated original SCID-RV into Korean, and revised in parallel with sociocultural background of Korea. Ninety patients from two psychiatric hospitals, both outpatient and inpatient, were interviewed and rated independently by three raters. Results: The kappa coefficients for most of illnesses, such as major depressive disorder, dysthymia, schizophrenia, alcohol abuse and dependency, anxiety disorder and eating disorder were excellent(>0.70) in the evaluation of current disorders. And the kappa coefficients for bipolar disorder, delusional disorder, agoraphobia, undifferentiated somatoform disorder, and hypochondriasis were acceptable(>0.40) in the evaluation of current disorders. In the evalua-tion of lifetime disorders, the concordant rates of all the diagnoses except bipolar disorder and undifferentiated somatoform disorder were excellent. Lack of hierarchy in DSM-Ⅳ allows for multiple Axis I diagnoses. Mean numbers of Axis I diagnoses per subject assigned by the three raters were 1.5-1.7. Conclusions: Our findings confirm that SCID-RV yields highly reliable diagnoses. SCID-RV is recommended for accurate diagnosis in clinical practice and research on psychiatric disorders.

도시 거주 노인 수면 습관 및 불면증상의 요인 : 인구학적,질병 및 정신증상의 관련성

홍진표,안준호,윤영국,박종익,이소영,함봉진,김장규,한오수,조맹제 대한신경정신의학회 2000 신경정신의학 Vol.39 No.6

연구목적 : 본 연구는 국내 노인의 습관을 조사하고 불면 증상과 연관 있는 인구학적, 질병학적 요인을 알고자 했다. 방 법 : 1997년 12월부터 1998년 1월까지 약 1개월에 걸쳐 2단계 층화집락표본추출의 역학조사법을 통해 선정된 3개 4개동 거주의 만 65세 이상 노인을 대상으로 수행되었다. 대상자 중 723명에서 등답을 받았으며 응답률은 73.8였다. 대학생인 설문조사요원들을 훈련시킨 뒤, 이들로 하여금 대상지역의 노인거주가정을 방문하여 개개 노인을 대상으로 반구조화된 면담으로 수면습관 및 불면증상 설문을 실시하였으며 그 외 한국어판 노인정신장애평가척도, 삶의 질 척도를 이용한 설문조사와 과거 질병력을 청취조사하게 하였다. 결 과 : 국내 노인들은 평균 오후 10시 16분에 자리에 누워 오전 5시22분에 일어나서 총 7시간 6분의 수면시간을 보였다. 노인의 11.7%가 거의 매일 밤 불면증을 14.8%가 간헐적 불면증을 호소하였다. 남자에서는 연령이 증가할수록 침상에 누워있는 시간이 증가하고, 또, 입면시까지 소요되는 시간과 수면 중의 각성회수가 증가되었으나 여성에서는 명확하지 않았다. 단변수 분석에서 요통, 중풍 병력의 환자에서 불면증상이 심했다. 다변량분석 결과 불면 증상과 관련 깊은 요인으로 남자에게서는 고령과 우울증상이 여자에게서는 남자의 위험요인에다 신체통증과 피부병력이 추가로 관련이 있었다. 결 론 : 지역 거주 노인에서 불면 증상은 매우 흔한 증상이며 우울증상과 명확한 상관관계를 보이고 있었다. 불면증을 극복하기 위해 불면증 위험요인의 인과관계에 대한 추후 연구가 필요하다. Objectives : The purpose of this study is to analyze sleep habit and investigate the association between insomnia and demographic, health and psycho-behavioral symptomatology in Korean urban elderly Method : A total of 723 community residents aged 65 years or older were surveyed by two stage, random cluster sampling method. The response rate was 76.2%. Interviewers performed door to door visits and administered a questionnaire about sleep, past medical history, and several scales as the Psychogeriatric Assessment Scale(PAS), the short form Quality of Life Scale (SF-36) and etc. Results : The mean scores are as follows : retiring time was ten-sixteen p.m., wake-up time was five twenty two a.m., duration of sleep was seven hours and six minutes. Among the elderly, 11.6% and 14.8% of the subjects reported chronic and intermittent difficulty in sleeping, respectively. The patients with back pain and history of stroke complained of more insomnia symptoms in univariate analysis. In ANCOVA analysis, insomnia symptoms were associated with an old age, depressive symptoms in male. Bodily pain and history of dermatologic disease were additional risk factors in female. Conclusions : The data suggest insomnia is one of most common health problems among elderly Koreans living in the community. Strong positive relationship between depressive symptoms and insomnia were found. Further research is needed to explore the causal relationship between insomnia and risk factors.

Aggregation Bias Found in Korean Demand for Imported Beef

( Ik Su Jun ) 한국농촌경제연구원 2011 농촌경제 Vol.34 No.2

The purpose of this paper is to analyze whether the aggregation problem really matters in estimating the Korean demand for imported beef. This paper incorporates the aggregation bias in the demand system and tests whether the aggregation bias is statistically significant with two models: an unrestricted model with aggregation bias variables and a restricted model without the bias variables. The impact of the aggregation bias is also analyzed by comparing the elasticities of the two models. According to the Wald test, the hypothesis of no aggregation bias is rejected and the LR (Likelihood Ratio) test shows that the unrestricted model is statistically better than the restricted model. However, the impact of the aggregation bias on the demand system for imported beef is not so severe in that the elasticities of the two models are not so different and the elasticities of aggregation bias variables are insignificant. This paper utilizes imported beef data of two types (frozen and non-frozen) from USA, Canada, Australia and Rest of World. The aggregation bias is decomposed into country effect, product effect and interaction effect.

건강한 젊은 성인에서 액상 물질 한 모금 삼킴량의 측정

김수익 ( Su Ik Kim ),강지훈 ( Ji Hun Kang ),이동익 ( Dong Ik Lee ),조정열 ( Jeong Ryul Jo ),김형준 ( Hyung Jun Kim ),이재백 ( Jae Baek Lee ),진영호 ( Young Ho Jin ),정태오 ( Tae Oh Jeong ),윤재철 ( Jae Chol Yoon ) 대한임상독성학회 2013 대한임상독성학회지 Vol.11 No.2

Purpose: The aim of this study is to estimate one mouthful volume in a single swallow and average volume per swallow (AVS) in multiple swallows in the situation of toxic liquid poisoning. Methods: Thirty five men and 35 women were included in this study. Each subject was asked to drink one swallow and three consecutive swallows from bottle containing water and a bottle containing saline separately. We calculated one mouthful volume in a single swallow and AVS in three swallows. One mouthful volume and AVS were compared according to sex and content, respectively. One mouthful volume of water and saline was then compared with AVS of each. Results: Sixty seven adults(34 men; 26.9±3.2 years, 33 women; 25.6±2.4 years) completed the study. Men had larger one mouthful volume of water(49.1±19.9 ml vs 39.7±10.2 ml, p=0.02) and saline(20.7±10.9 ml vs 14.0±4.6 ml, p=0.004) and AVS of water(28.5±11.9 ml vs 21.5±5.9 ml, p=0.004) and saline(11.9±6.3 ml vs 7.9±2.0 ml, p=0.001) than women. One mouthful volume and AVS of saline swallow were lower than those of water swallow. AVS of three consecutive swallows was lower than one mouthful volume in water and saline swallow. Conclusion: We suggest that one mouthful volume in a single swallow is 21 ml in men and 14 ml in women and AVS in multiple swallows is 12 ml in men and 8 ml in women. AVS in multiple swallows is two-threefold lower than reference values(20~30 ml) commonly used in poisoning study.

우리나라 식량안보지수에 대한 새로운 접근

전익수 ( Ik Su Jun ),김병률 ( Byung Ryul Kim ),김용택 ( Yong Taek Kim ) 한국농업경제학회 2011 農業經濟硏究 Vol.52 No.2

The purpose of this study is to suggest a new method to measure food security index(FSI) of Korea properly reflecting new trends of food security concept which includes food security of global level, national level and household or individual level. The new approach of this study is to integrate the merits of the two approaches of FSI, i.e. an equation based approach with major components of food security and a score card approach with many different indicators for food security; the former has merits in simplicity while the latter in realities. The new FSI of Korea in 2009 is relatively low such as 53.3 out of 100. The low FSI is seemingly caused by low self-sufficiency rate, low grain stock rate, low effectivity of overseas agricultural development, and low security of household and consumers due to high increase of foo price.

제주 감귤산업의 경쟁력 강화를 위한 개선요인 조사 분석

전익수 ( Ik-su Jun ),윤종열 ( Jong Yeol Yoon ) 한국식품유통학회 2013 食品流通硏究 Vol.30 No.1

Effects of Smoking on Long-Term Clinical Outcomes and Lung Cancer in Patients with Acute Myocardial Infarction

Su Nam Lee,Ik Jun Choi,Sungmin Lim,Eun Ho Choo,Byung-Hee Hwang,Chan Joon Kim,Mahn-Won Park,Jong-Min Lee,Chul Soo Park,Hee Yeol Kim,Ki-Dong Yoo,Doo Soo Jeon,Ho Joong Youn,Wook-Sung Chung,Min Chul Kim,M 대한심장학회 2021 Korean Circulation Journal Vol.51 No.4

Background and Objectives: Smoking is well-established as a risk factor for coronary artery disease. However, recent studies demonstrated favorable results, including reduced mortality, among smokers, which are referred to as the “smoker's paradox”. This study examined the impact of smoking on clinical outcomes in patients with acute myocardial infarction (AMI) undergoing percutaneous coronary intervention (PCI). Methods: Patients with AMI undergoing PCI between 2004 and 2014 were enrolled and classified according to smoking status. The primary endpoint was a composite of major adverse cardiovascular events (MACE) including cardiac death, myocardial infarction, stroke, and revascularization. Results: Among the 10,683 patients, 4,352 (40.7%) were current smokers. Smokers were 10.7 years younger and less likely to have comorbidities such as hypertension, diabetes mellitus, chronic kidney disease, stroke, and prior PCI. Smokers had less MACE (hazard ratio [HR], 0.644; 95% confidence interval [CI], 0.594–0.698; p<0.001) and cardiac death (HR, 0.494; 95% CI, 0.443–0.551; p<0.001) compared to nonsmokers during the 5 years in an unadjusted model. However, after propensity-score matching, smokers showed higher risk of MACE (HR, 1.125; 95% CI, 1.009–1.254; p=0.034) and cardiac death (HR, 1.190; 95% CI, 1.026–1.381; p=0.022). Smoking was a strong independent predictor of lung cancer (propensity-score matched HR, 2.749; 95% CI, 1.416–5.338; p=0.003). Conclusions: In contrast to the unadjusted model, smoking is associated with worse cardiovascular outcome and higher incidence of lung cancer after adjustment of various confounding factors. This result can be explained by the characteristics of smokers, which were young and had fewer comorbidities.