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노인 부양의식에 영향을 미치는 요인: 청년세대와 중년세대 비교를 중심으로
임정숙 ( Lim Jeungsuk ),정순둘 ( Chung Soondool ) 한국가족사회복지학회 2017 한국가족복지학 Vol.58 No.-
The purpose of this study was to investigate the effects of elderly generation sympathy, family intimacy and age-friendly environment of young and middle-aged generations on supporting the older adults, and to identify differences of influencing factors among generations. With these purpose, we used data of the ‘2017 Age Integration Survey’ provided by the Humanities and Social Capacity Enhancement Project in Korea Research Foundation. The analysis of the data was performed on 640 participants who were between 18 and 64 years old, and they were selected from total 1017 study population. The analysis method was the Structural Equation Model(SEM). The results of this study were as follow. Firstly, elderly generation sympathy and family intimacy were significant statistically significant effect on the notion of supporting the older adults positively to all generations. Secondly, the relationship between the notion of supporting the older adults and the influential factors suggested in this study was found to be significant among the generations. Thirdly, the young generation showed a statistically significant effect on the notion of supporting the older elderly generation sympathy and family intimacy. Elderly generation sympathy and family intimacy had a significant statistical impact in the middle aged generation, however, age-friendly environment significant statistically significant effect on notion of supporting the older adults negatively. With these results, we presented practical and policy suggestions to enhance the notion of supporting the older adults.
임정숙(J. S. Lim),이영선(Y. S. Lee),문호근(H. G. Moon),문영훈(Y. H. Moom) 한국소성가공학회 2012 한국소성가공학회 학술대회 논문집 Vol.2012 No.5
By hot compression test in the temperature range of 800-1100℃ and the strain rate range of 0.01-10 s?¹, hot deformation behavior of Ti-6Al-4V was characterized. And processing maps including flow stability criteria and Ziegler’s stability criterion were generated using the compression test data. In order to evaluate the reliability of the map, the microstructure characteristics of the hot compressed specimens were correlated with test conditions in the stable and unstable regime. The microstructure and processing map of Ti-6Al-4V was applied to predict an optimum condition and unstable regions for hot forming processes.
임정숙(J. S. Lim),천세환(S. H. Chun),문영훈(Y. H. Moon),이영선(Y. S. Lee) 한국소성가공학회 2011 한국소성가공학회 학술대회 논문집 Vol.2011 No.5
Steel tube has been used widely in many fields, such as in the power, transportation and chemical industries and so on. Therefore, most of the time, their mechanical properties are strictly required in detail. In order to enable those parts to work within the safety limits a large variety of heat treatments are conducted in precedent studies. Especially, to produce bended pipe, many process and simulation technique has been developed. Bending applying local induction heating is an efficient way to produce bended pipes of various radius with lower cost and to provide better quality product, since it was invented by Dai-ichi High Frequency Co.(DHF) of Japan in 1961. And it is very important to simulate bending process with transient and residual stresses in surface hardening by high frequency induction heating, to predict the process result. In this paper, to verify confidence of bended pipe, FEM simulation was conducted and compared with the residual stress using hole-drilling gage method.
임정숙(J. S. Lim),송용현(Y. H. Song),이영선(Y. S. Lee),문영훈(Y. H. Moon) 한국소성가공학회 2012 한국소성가공학회 학술대회 논문집 Vol.2012 No.10
Tube bulging process is a relatively complex manufacturing process because of this process depends on the part shape, kind of materials, boundary conditions and etc. Due to this complex manufacturing process, optimization parameters of tube bulging process has been investigated using finite element method analysis. In this paper, optimized bulging pressure curve is proposed which to bulge complex shape such as a head-tube of bicycle frame. Simulation is performed with commercial FE analysis program FORGE<SUP>®</SUP> and the result compared with the experiment result. It was found that the experiment and simulation results were in good agreement.
임정숙(J. S. Lim),이영선(Y. S. Lee),문호근(H. G. Moon),문영훈(Y. H. Moon) 한국소성가공학회 2012 한국소성가공학회 학술대회 논문집 Vol.2012 No.5
Radial forging is a unique process used for forging of round and tubular components. This operation has been used extensively in both hot and cold forging operations. Since radial forging operations have certain specific advantages as compared to other alternatives, process improvement is required. And this process is often compared to open die forging. Therefore, in this paper, mechanical properties of STD11 forged bar manufactured by both open die forging process and radial forging process were compared.
통계적 기법에 의한 24,000rpm 초고속 스핀들 개발
임정숙(Joeng-suk Lim),남기용(Ki-Yong Nam),정원지(Won-Jee Chung),이춘만(Choon-Man Lee) 한국생산제조학회 2006 한국공작기계학회 춘계학술대회논문집 Vol.2006 No.-
The spindle system with a built-in motor can be used to simplify the structure of machine tools, to improve the machining flexibility of machine tools, and to perform the high speed machining. In this system the shaft is usually assumed as a rigid rotor. In the high-speed spindle system design, it is very important to know the contribution ratio of core parts to improve static and dynamic stiffness. The natural frequency and deformation of the spindle end is obtained by FEM mode analysis. And statistical method was used to draw most suitable condition of each part.