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중년 남성의 자아존중감, 사회적 지지, 스트레스에 따른 우울성향
안경남(Kyung-Nam An),김민선(Min-Sun Kim),김동구(Dong-Gu Kim),서영성(Young-Sung Suh),김대현(Dae-Hyun Kim) 대한임상노인의학회 2012 대한임상노인의학회지 Vol.13 No.4
연구배경: 여성에 비해 사회활동이 많은 중년 남성의 경우 신체적 변화 이외에도 직장 내 대인관계, 업무 스트레스와 같은 사회구조적, 심리적 및 인지적 요인이 우울에 미치는 영향이 클 것이다. 본 연구에서는 중년 남성의 자아존중감, 사회적 지지 및 스트레스와 우울과의 연관성에 대해 조사하였다. 방법: 대구 시내 일개 직장 40∼60세까지 중년 남성 173명을 대상으로 일반적 특성과 자아존중감, 사회적 지지, 스트레스 및 우울 정도를 Rosenberg 자아존중감척도, Karasek 직무 긴장 모델, BEPSI-K, BDI를 이용하여 설문 조사하였다. 결과: 대상자의 평균 자아존중감, 사회적 지지, 스트레스, BDI 점수는 38.5±5.49, 27.2±4.49, 9.5±3.03, 9.1±7.44로 나타났다. 자아존중감과 사회적 지지 및 스트레스와 BDI 간의 상관분석에서 자아존중감(r=−0.578, P<0.001)과 사회적 지지(r=−0.662, P<0.001)는 BDI와 음의 상관관계를 보였고, 스트레스는 BDI와 양의 상관관계(r=0.717, P<0.001)를 보였다. 단변량 회귀분석에서 자아존중감과 사회적 지지가 낮을수록, 스트레스가 많을수록 BDI 점수는 높아져 각 변인들이 우울에 미치는 영향력은 모두 유의하게 나타났다. 이 세가지 변수에 대한 단계적 다중회귀분석을 시행한 결과 BDI에 영향을 미치는 가장 중요한 변수로 스트레스(R²=0.51, P<0.001), 사회적 지지(R²=0.63, P<0.001), 자아존중감(R²=0.67, P<0.001)순으로 나타났다. 결론: 본 연구를 통해 중년 남성의 우울에 있어 높은 스트레스와 낮은 사회적 지지 및 자아존중감이 유의한 상관관계를 가짐을 알 수 있었다. 따라서 증가하고 있는 중년 남성들의 우울증의 중재를 위해 자아존중감과 사회적 지지의 향상, 스트레스 관리를 위해 노력해야 할 것이다. Background: The prevalence of major depressive disorder (MDD) is increasing in the 40’s and 50’s male in Korea. In middle-aged men, sociocultural factors contribute to depression, as well as physical factors. There have been several reports in middle-aged men’s occupational stress burden but there were a few reports of its relationship with depression. In this study, we investigated depression in middle-aged men and its relationship with self-esteem, social support and stress. Methods: Between July 4th and 23rd 2001, a self-reporting questionnaire survey was administrated to 173 employees, aged from 40 to 60 at a company located in Daegu city, Korea. The Rosenberg’s self-esteem scale, Kasrasek’s job strain model, BEPSI-K and BDI were used to evaluate the self-esteem, social support, stress and depression. Results: Mean age of participants was 48.1±4.36 and the scores of self-esteem, social support, stress and BDI were 38.5±5.49, 27.2±4.49, 9.5±3.03, 9.1±7.44. As a major variable, self-esteem and social support showed negative correlation with severity of depression (r=−0.578, P<0.001 vs. r=−0.662, P<0.001). In contrast stress showed positive correlation (r=0.717, P<0.001). In univariate regression analysis, lower self-esteem, lower social support and higher stress, were correlated with higher BDI scores. Stress was the most important variable affecting severity of depression (R²=0.51, P<0.001). And the social support (R²=0.63, P<0.001), self-esteem (R²=0.67, P<0.001) were followed. Conclusion: Depression in middle-aged male had significant relationship with high degree of stress, low level of social support and low self-esteem.
PROPOSITION AND FABRICATION OF A NEW DESIGN OF MR BRAKE USING MR FLUID
남(Tran Hai NAM),안경관(Kyoung Kwan AHN),윤종일(Jong Il YOON) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.11
Magneto-rheological (MR) fluid is a kind of functional fluid, whose rheological properties change with respect to the applied magnetic field. The MR fluid typically consists of silicon oil and micron-sized magnetic particles. MR fluids are now being developed and used in car shocks, damper for washing machine vibration reduction, prosthetic limbs (leg, hand in medicine), exercise equipment, and surface polishing of processing machine parts. In this paper, a new MR brake using large size magnetic particles mixed with normal MR fluid is proposed and fabricated to get higher magnetic permeability, and to increase magnetic flux in a qualitative manner. The operational mode of the proposed MR brake is completely different from the already known shear or valve mode. Finally, the braking force is compared between MR Brake with large size magnetic particles and MR Brake with only MR Fluid, and the braking force of the proposed MR Brake with large size magnetic particles is verified to be very effective by simulation.
고분자 전해질 막 연료전지의 촉매층 내의 나피온 아이오노머 양에 따른 단위 셀의 전기화학적 특성 연구
안경용,양철남,이수 한국수소및신에너지학회 2010 한국수소 및 신에너지학회논문집 Vol.21 No.6
In order to confirm the effect of Nafion ionomer content in catalyst layer on the performance of PEMFC, we have fabricated several electrodes which were prepared by varying the quantity of Nafion ionomer from 24 wt.% to 39 wt.% in catalyst layer. The effect of Nafion ionomer of each electrode was evaluated with cyclic voltammetry measurement. In addition, cell performance was obtained through single cell test using hydrogen and air. The Pt utilization and performance of single cell were changed by addition of Nafion ionomer to the electrode. Single cell fabricated with 33 wt.% of Nafion ionomer in catalyst layer showed the maximum Pt utilization and performance.
외상에 의한 정신 및 행동장애에 대한 법원 감정의 실태와 문제점에 관한 연구
류성곤,정한용,이병철,안경남 大韓神經精神醫學會 2008 신경정신의학 Vol.47 No.6
Traumatic injury can result not only in physical disability but also in mental and behavioral sequelae. It is very important to properly judge the severity of disability as well as the need for assistance and future medical treatment. It is very difficult to establish objective guidelines for assessing mental and behavioral disabilities due to the inherent peculiarity of the disabilities. This study uses reports generated for court because they need to be more judicious than reports for other types of evaluation. We analyzed reports concerning the facts and problems associated with evaluation of mental and behavioral disabilities. We hope this study will help further our understanding of mental and behavioral disabilities.