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정신보건 사회복지사의 이차적 외상스트레스가 직무만족에 미치는 영향 자아탄력성과 사회적 지지의 조절효과
임정숙(Jeong Suk Lim),윤명숙(Myeong Sook Yoon) 한국정신건강사회복지학회 2014 정신보건과 사회사업 Vol.42 No.1
본 연구는 정신보건 사회복지사가 직무수행과정에서 클라이언트의 외상에 노출됨으로써 경험하는 이차적 외상스트레스의 발생과 이차적 외상스트레스가 직무만족에 미치는 관계를 살펴보고, 이 관계에 영향을 미치는 자아탄력성과 사회적 지지의 조절효과를 검증하기 위한 연구이다. 이를 위해 4개 지역 38개소의 정신건강증진센터에 근무하는 정신보건 사회복지사 284명을 대상으로 조절회귀식을 이용하여 분석하였다. 연구결과, 첫째, 정신보건 사회복지사의 이차적 외상스트레스는 직무만족에 유의미한 영향을 미치는 것으로 나타났다. 둘째, 이차적 외상스트레스와 직무만족의 관계에서 자아탄력성이 조절효과를 가지는 것으로 나타났다. 셋째, 이차적 외상스트레스와 직무만족의 관계에서 사회적 지지는 유의미한 조절효과가 나타나지 않았다. 이러한 연구결과를 바탕으로 정신보건 사회복지사의 이차적 외상스트레스 문제에 개입하고 정신보건 사회복지사의 직무만족도를 높이기 위한 방안과 후속 연구들을 제언하였다. The purpose of this study was to investigate moderating effects of ego-resilience and social support between secondary traumatic stress and job satisfaction among mental health social workers. Data were collected from 285 mental health social workers who were working at 38 community mental health center. Collected data were analyzed by frequency, t-test, moderated multiple regression and simple slope analysis. The major findings of this study were as follows: First, secondary traumatic stress were significantly related to the job satisfaction. Second, ego-resilience and social support were significantly related to the job satisfaction. Third, ego- resilience moderated between secondary traumatic stress and job satis-faction among mental health social workers. But social support showed no moderating role between secondary traumatic stress and job satisfaction among mental health social workers. These findings supported the importance of secondary traumatic stress program and self-care program in mental health field. Suggestions of mental health social worker were discussed.
40,000rpm 고속 주축의 정ㆍ동특성 향상을 위한 베어링 위치 선정
임정숙(Jeong Suk Lim),정원지(Won Jee Chung),이춘만(Choon Man Lee) 한국기계가공학회 2009 한국기계가공학회지 Vol.8 No.1
Spindle design is very important for the improvement of the competitive power in production cost of high quality machine tools. The important factor in spindle design is not only to improve the natural frequency of spindle but also to reduce displacement of spindle end. In this paper, parameters those influence on static and dynamic stiffness of high-speed spindle have selected form preceding studies. And those selected parameters are applied to Taguchi Method. To perform FEM analysis, bearing conditions are selected with optimized condition. To know how to improve static and dynamic stiffness of machine tool spindle, natural frequency and displacement of spindle end are obtained by FEM analysis. The Taguchi Method was used to draw optimized condition of bearing position and it's stiffness. From these results, amplitude of vibration is enough good less than 3㎛ pk-pk of the spindle of 40,000rpm manufactured in this work by the optimal design.
미세 볼엔드밀가공시 절삭력과 음향방출신호에 의한 공구 파손 검출 및 메커니즘
왕덕현,김원일,임정숙,Wang, Duck-Hyun,Kim, Won-Il,Lim, Jeong-Suk 한국기계가공학회 2004 한국기계가공학회지 Vol.3 No.3
A successful on-line monitoring system for conventional machining operations has the potential to reduce cost, guarantee consistency of product quality, improve productivity and provide a safer environment for the operator. In fine-shape machining, typical signs of tool problems such as vibration, noise, chip flow characteristics and visual signs are almost unnoticeable without the use of special equipment. These characteristics increase the importance of automatic monitoring in fine-shape machining, however, sensing and interpretation of signals ar more complex. In addition, the shafts of the mini-tools break before the typical extensive cutting edge of the tool gets damaged. In this study, the existence of a relationship between the characteristics of the cutting force and tool usage was investigated, and tool breakage detection algorithm by LabVIEW was developed and the following results are obtained. It was possible to use a relative error compare which mainly used in established experiment and investigated tool breakage detection algorithm in time domain which can detect AE and cutting force signals more effective and accurate.