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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.
Assessment of mechanical properties of thin films and micro materials using nanoindenter
Jun-Hee Hahn,Gwang-Seok Kim,Sang-Yul Lee 한국표면공학회 2004 한국표면공학회 학술발표회 초록집 Vol.2004 No.-
The hardness and elastic modulus of bulk materials and thin films were examined by nanoindentation. The bulk materials included fused silica, single crystal aluminum and ri-doped single crystal silicon and thin films included AlN/CrN supper lattice film on tool steel and DLC film on silicon. The results on bulk materials showed that with nanoindentation method, hardness and modulus can be measured to within 8% and that on films showed some substrate (film thickness) effects. Micro cantilever beam bending test and FEM simulation were suggested as the possible method to measure or calculate the intrinsic mechanical properties of thin film with the thickness less than 1㎛.
Nanoindenter를 이용한 박막 및 미소가공 제품 기계적 특성 평가
한준희(Jun Hee Hahn),이광렬(Kwang Ryeol Lee),김광석(Kwang Seok Kim),박준협(Jun Hyub Park) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.3
Mechanical properties of thin films for the membrane of ink-jet printer head were tested with cantilever beam bending method using nanoindenter after fabricating in the form of micro cantilever beam(μ-CLB) and with continuous stiffness measurement(CSM) nanoindentation method. The films for membrane included multi-layered SiO₂/poly-Si/SiN/SiO₂ film, CVD diamond film, SiO₂ film and SiN film. The elastic moduli of SiO₂ film and SiN film measured with each method were compared. And the elastic modulus and hardness of 1MeV He? and 1MeV Cl? implanted polyimide were measured using CSM nanoindentation method. The results show that the modulus and strength of multi-layered film increase from 56.53 ㎬ and 1.834 ㎬ to 68.08 ㎬ and 2.495 ㎬, respectively as the width of CLB decreases from 58.5 m to 18.5 m. And the elastic moduli of SiO₂ and SiN films measured with cantilever beam bending method are 69 ㎬ and 215.45 ㎬, respectively and the elastic moduli of these films on silicon substrate measured with CSM(continuous stiffness measurement) method are 98.78 ㎬ and 219.38 ㎬, respectively. These results show that with μ-CLB bending technique, moduli can be measured to within 2%. 1MeV He? and 1MeV Cl? implantation increased the hardness of poly imide from 0.26 ㎬ to 1.8 ㎬ and 6.2 ㎬ and the modulus over 4 and 13 times respectively.
동적변형시효현상이 304 오스테나이트계 스테인레스강의 변형률속도감도에 미치는 영향에 관한 연구
한준희,문한규 대한금속재료학회(대한금속학회) 1988 대한금속·재료학회지 Vol.26 No.5
The dynamic strain aging effect which had been commonly identified with the serrations on the stress-strain curve, was studied by observing the strain rate sensitivity, if., the stress change due to the sudden change of strain rate during deformation. The new experimental method attempted in this study was to change the strain rate at the same stress and strain on the cyclically stabilized stress-strain curve so that the work hardening effect could be eliminated. The initial stress change and the gradual stress change accompanying the strain rate change were measured seperately identifing the form or with the viscous effect and the latter with the dynamic strain aging effect. The experiment was performed in a relatively large strain rate range of 3.2×10^(-7) to 3.2×10^(-3) and a temperature range of 20℃ to 800℃. Among the substitutional alloys which were of our interests for the current study, 304 austenitic stainless steel was chosen as a test material because its dynamic strain aging temperature and strain rate ranges could be obtained with our experimental facilities. The main conclusions are that the dynamic strain aging effect could be studied quantitatively and the strain rate change method is very effective for the purpose, and that, for 304 austenitic stainless steel, the dynamic strain aging effect appears most strongly at the strain rates of 10^(-6), 10^(-5), 10^(-4) and 10^(-3) for the temperatures of 300℃, 400℃, 500℃, and 600℃, respectively.
Visceral Obesity Is Associated with Gallbladder Polyps
( Jun Kyu Lee ),( Suk Jae Hahn ),( Hyoun Woo Kang ),( Jae Gu Jung ),( Han Seok Choi ),( Jin Ho Lee ),( In Woong Han ),( Jin Hee Jung ),( Jae Hyun Kwon ) 대한소화기기능성질환·운동학회 2016 Gut and Liver Vol.10 No.1
Background/Aims: Gallbladder polyps (GBP) are a common clinical finding and may possess malignant potential. We conducted this study to determine whether visceral obesity is a risk factor for GBP. Methods: We retrospectively reviewed records of subjects who received both ultrasonography and computed tomography with measurements of the areas of visceral adipose tissue and total adipose tissue (TAT) on the same day as health checkups. Results: Ninety-three of 1,615 subjects (5.8%) had GBP and were compared with 186 age- and sex-matched controls. VAT (odds ratio [OR], 2.941; 95% confidence interval [CI], 1.325 to 6.529; p=0.008 for the highest quartile vs the lowest quartile) and TAT (OR, 3.568; 95% CI, 1.625 to 7.833; p=0.002 for the highest quartile vs the lowest quartile) were independent risk factors together with hypertension (OR, 2.512; 95% CI, 1.381 to 4.569; p=0.003), diabetes mellitus (OR, 2.942; 95% CI, 1.061 to 8.158; p=0.038), hepatitis B virus positivity (OR, 3.548; 95% CI, 1.295 to 9.716; p=0.014), and a higher level of total cholesterol (OR, 2.232; 95% CI, 1.043 to 4.778; p=0.039 for <200 mg/dL vs ≥240 mg/dL). Body mass index and waist circumference were not meaningful variables. Conclusions: Visceral obesity measured by VAT and TAT was associated with GBP irrespective of body mass index or waist circumference. (Gut Liver 2016;10:133-139)