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윤재영(Yoon Jae-Young),최흥관(Choi Heung-Kwan) 한국철도학회 2000 한국철도학회 학술발표대회논문집 Vol.- No.-
This paper presents the new simulation algorithms using network methods to analysis the steady-state train voltage distribution characteristics in ac auto-transformer fed railroads. In general, the supply system of railroads is composed of non-symmetrical and unbalance transmission line. Therefore, the general method using simplified old algorithms have the self-contradictory errors because the supply line of train railroads is completely unbalanced. In this paper, the simulation results of new developed algorithms is compared with those of EMTP to confirm the effectiveness.
Insulin 비의존형 당뇨병환자에서 Insulin 과 Gliclazide 병합요법의 효과에 관한 연구
윤재영(Jae Young Yoon),장현주(Hyun Ju Jang),안재수(Jae Su An),정동진(Dong Jin Chung),최종상(Jong Sang Choi),정민영(Min Young Chung),이태희(Tai Hee Lee) 대한내과학회 1990 대한내과학회지 Vol.39 No.2
N/A This study was performed on the acute effect of gliclazide and insulin combination in non insulin dependant diabetic (NIDDM) patients who had been in secondary failure with oral hypoglycemic agents treatment. Thirty minutes after premedication with 80 mg gliclazide or placebo, 11.25 unit of rapid acting recombinant human insulin were infused through the forearm vein for 45 minutes. Blood sugar measurements were made at 10-minute intervals, whereas serum insulin and C-peptide levels were measured at 30-minute intervals. The results were as follows: 1) There was no significant difference in the basal serum insulin concentration before the insulin infusion after placebo and gliclazide administration. Peak serum insulin concentration was attained 30 minutes after insulin infusion. The values were 312±26 μU/ml after placebo administration and 312±19 μU/ml after gliclazide adminisration. 2) Blood sugar levels of both groups fell to 130 mg/dl one hour after insulin infusion and remained at euglycemic state during the study. 3) Although both showed no difference in the basal C-peptide concentration, the serum C-peptide concentration of the gliclazide group was significantly higher than that of the placebo group. These results indicate that gliclazide combined with insulin may increase endogenous insu1in secretory capacity, even in the presence of secondary failure of oral hypoglycemic agents.
당뇨병성 말초신경장애에서의 Vibratory Perception Threshold
윤재영(Jae Young Yoon),정동진(Dong Jin Chung),최종상(Jong Sang Choi),안재수(Jae Su An),장현주(Hyun Ju Jang),정민영(Min Young Chung),이태희(Tae Hee Lee) 대한내과학회 1991 대한내과학회지 Vol.41 No.4
N/A To assess the relation between vibratory perception threshold (VPT) and diabetic neuropathy, we checked beat-to-beat variation test (BBV) and VPT in 67diabetics (24insulin-dependent diabetes mellitus (IDDM), 43 non-insulin dependent diabetes mellitus (NIDDM)) and 35control subjects of similar age, and the following results were obtained. 1) In the control subjects, the VPT value was 7.2at the left 1st metacarpal area and 19.0at the left anterior superior iliac spine. The values in the lower extremities were higher than those of the upper extremities, and there were no differences between the left and right. 2) NIDDM patients had significantly higher VPT values at all sites, especially in the lower extremities, than those of the control subjects (p<0.01) (mean VPT values at the left and right lateral malleolus, medial malleolus, 1st metatarsal, and great toe were 26.8, 24.8, 25.1, 25.7, 20.2, 21.9, 18.9 and 18.3 in diabetics, and 16.5, 17.2, 17.3, 18.8, 14.5, 14.1, 12.1 and 11.0 in the controls, respectively). 3) The VPT values of NIDDM patients with symptoms of peripheral neuropathy were significantly higher in the upper and lower extremities (mean VPT values at the left and right radial and ulnar tubercle in the upper extremities were 14.2, 16.3, 12.2 and 15.8, respectively (p<0.05) and at the left and right lateral malleolus, medial malleolus, 1st metatarsal and great toe in the lower extremities were 31.4, 29.3, 30.1, 30.0, 23.6, 27.2, 22. 5 and 21.7 respectively (p<0.01)) than those of the control and asymptomatic subjects. 4) Among the asymptomatic NIDDM patients (n=16), the VPT values of 5 were higher than those of the others at olecranon, radial tubercle, and ulnar tubercle (p<0.05, respectively). However, the BBV showed no significant differences between them. 5) There were associations of the VPT values with age in the diabetic and control subjects (diabetic; r=0.52, p<0.001, control; r=0.74, p<0.001) and those in the lower extremities in NIDDM patients were associated with duration of diabetes (r=0.49, p<0.001) and age (r=0.43, p<0.01). 6) There were no relations between VPT values and angiographyically comfirmed retinopathy in NIDDM patients. 7) VPT values and BBV in IDDM patients were not significantly different from age matched control subjects (in BBV test; 14.4 in IDDM patients and 12.3 in controls). These results suggest that measurement of VPT is useful aid for early diagnosis of peripheral neuropathy in NIDDM patients, and diabetic peripheral neuropathy could be developed without automonic neuropathy.
윤재영 ( Yoon Jae-young ) 한국장애인개발원 2010 장애인복지연구 Vol.1 No.3
본 연구는 미국의 장애인 자립생활(independent living)운동을 배경으로 국내 장애인복지현장에서 중요한 개념으로 등장한 장애인 자립생활의 의미를 구조화하고 장애인의 자립생활 정도를 측정할 수 있는 도구의 개발을 목적으로 하였다. 의미 구조화 연구 단계에서는 먼저 67명의 자립생활센터 직원과 이용자가 참여한 브레인스토밍 활동으로 자립생활의 개념에 대한 281개의 아이디어 문항을 수집하였으며 이에 참여한 자립생활센터 소장 5명이 문항 축소(idea synthesis)를 실시하였고 이후 9명의 센터 소장이 참여하여 문항 분류 및 평정 작업을 수행하였다. 이를 통해 수집된 자료는 ALSCAL을 이용한 다차원 척도분석과 위계적 결합방식인 워드 연산법에 의한 집락분석을 통해 분석되었으며 분석결과에 따라 국내 장애인 자립생활센터 활동가들이 가지고 있는 자립생활 의미에 대한 7개의 구성체와 50개의 예비 문항이 확인되었다. 측정 도구 개발 단계에서는 총 50개 문항으로 구성된 리커트 척도에 대해 우편질문지 조사를 실시하여 자립생활센터 직원 및 이용자로 구성된 417사례를 확보하였다. 수집된 자료에 대해서는 신뢰도 분석, 주성분 분석, 탐색적·확인적 요인 분석을 실시하였으며 이를 통해 9개 요인에 속한 47개 문항으로 구성된 자립생활 척도를 구성하였다. 자립생활 척도를 구성하는 하위 개념은 자기 신뢰, 자기결정, 자기 역량강화, 가족관계, 이웃·동료관계, 복잡한 대인 관계, 공동체 관계, 생산성, 사회환경 등 총 9개로 나타났으며, 척도의 Cronbach's α 값은 0.956, 표본적합도(MSA)는 0.943으로 매우 높게 나타나, 개념도 연구를 통한 척도 구성 방식이 척도 개발의 구성 타당도를 높이는 적합한 방법임을 확인할 수 있었다. The purpose of this study is to structuralize the meaning of the Independent Living and to develop it's measurement instrument. Independent Living has become a significant concept for the disability study and service field after the independent living movement in America. To structuralize the meaning of IL, 281 statements about IL made by 67 users were collected and the statements are synthesized to 50 ideas by 5 executive directors of CILs. To draw a concept map, the data gathered though 9 participants' performing two structuring tasks(grouping and rating the set of statements describing the IL) were computed with a multidimensional scaling analysis and a hierarchical cluster analysis. After interpreting the map, 7 constructs and 50 items that clarifies the users' views of IL were created. To develop the measurement instrument of IL, the data were collected from 417 users with the 50 item questionnaire through the mail. By using a principle component and exploratory factor analysis, the scale which consisted of 47 items and 9 factors such as self-reliance, self-determination, self-empowerment, family relationships, informal social relationships, complex interpersonal relationships, community relationships, productivity and social environment was developed. In addition, it is founded that the scale has excellent internal consistency, with alphas .95 and CIL users' IL ranges from 30.56 to 89.38 (M=63.63, SD=10.92) by the other survey of 282 users. Hopefully, Independent Living Scale that was developed in this study, can be utilized to accumulate the fact about degree of IL and formulate effective policies, programs, and services for people with disabilities who help themselves achieving their independence in Korea.