• 한국소성가공학회:학술대회논문집
• /
• 한국소성가공학회 2009년도 제7회 압연 심포지엄
• /
• pp.13-16
• /
• 2009

In order to investigate the effects of geometry factors such as a roil diameter ratio and backup roll crown of the stress concentration factor on the edge of backup roil end, 3-dimensional FEM analyses of stress at the contact of backup roll and work roll assembled in a 4-high strip mill were carried out, It was made clear that the peak stress at the edge is about 2 to 3 times of that at the longitudinal center of the roll barrel and the peak stress proportionally increase with decreasing the ratio of backup roll diameter to work roll diameter Furthermore a crowning on the backup roll is effective to decrease the maximum edge stress.

• 대한안전경영과학회지
• /
• 제10권1호
• /
• pp.67-73
• /
• 2008

National Education Information System (NEIS) is an ambitious reform project that can improve the competitiveness and performance of education field and to link administrational work of between schools and their senior administration offices via internet. NEIS is introduced to lighten the teachers' overburden, to standardize the work process and to bring better quality education to each classroom and make it possible for those involved in education to resolve any related educational problem on line. This paper aims to construct a hierarchy model consisting of key factors such as technological and administrative factors for the effective use of NEIS and to evaluate the relative importance among key factors using fuzzy AHP technique included fuzzy concepts. Eventually, the analysis results can be utilized to develop the future improvement strategy of NEIS and to satisfy the users.

• 가정과삶의질연구
• /
• 제21권2호
• /
• pp.213-220
• /
• 2003

In this study, I analyzed dual-career commuting couples time use. Concretely, this study compared the husband with the wife on the becoming a commuter family, the living apart on weekdays. And it examined time use on weekdays and weekends by the time amount of each activities and the ratio of actor on each hour. The survey participants included 131 married people who were dual-career commuting couple and who were maintained separate residence and work place. The major findings are as follows: First, weekday separation of the dual-career commuting couples is largely due to career. This kind separation is mostly due to sociostructural labor market factor and individual factor to increasing working women. Second, 94.6%(53) of male participants were resident living apart from their family on weekdays. Third, the most wives mentioned some kind of emotional liberation such as freedom on weekdays. Finally, there was gender difference in the time spent on each activities when dual-career commuting couples are living together and they are apart. Especially the most gender difference on weekdays is household work time and leisure time.

• 한국건축시공학회:학술대회논문집
• /
• 한국건축시공학회 2013년도 추계 학술논문 발표대회
• /
• pp.90-91
• /
• 2013

In the field of nuclear power construction, management and the systematic construction is very necessary. For more efficiently managing, analysis of influence factors and productivity is indispensable now. On this research, we collected the data from the nuclear power plant which is located in Korea. We analyzed the productivity and influence factors. As a result, productivity was 0.75(㎡/man·hour).On one hand, the productivity should be personnel, weather and whether there is a night duty or not. On the other hand, work crew depends upon operators, formwork amount, the presence or absence of night duty.

• 한국소성가공학회:학술대회논문집
• /
• 한국소성가공학회 2005년도 춘계학술대회 논문집
• /
• pp.69-72
• /
• 2005

The crystal structure of magnesium is hexagonal close-packed (HCP), so its formability is poor at room temperature. But formability is improved in high temperature with increasing of the slip planes. Purpose of this paper is to know about the mechanical properties of magnesium alloy (AZ31B), before warm and hot forming process. The mechanical properties were defined by the tension and compression tests in various temperature and strain-rate. As the temperature is increased, yield${\cdot}$ultimate strength, K-value, work hardening exponent (n) and anisotropy factor (R) are decreased. But strain rate sensitivity (m) is increased. As strain-rate increased, yield${\cdot}$ultimate strength, K-value, and work hardening exponent (n) are increased. Also, microstructures of grains fine away at high strain-rate. These results will be used in simulations and manufacturing factor for warm and hot forming process.

• 한국생활과학회지
• /
• 제17권6호
• /
• pp.1167-1180
• /
• 2008

The purpose of this study was to take the gauge of the importance-performance of the clothing store attribute in the department store. The survey was administered to customers of department stores in Deajeon city and frequency analysis, factor analysis, reliability analysis, and importance-performance analysis were used to analyze the data of 37 clothing store attributes. The findings of this study were as bellows: 1. 8 factors were distracted from 37 clothing store attributes by factor analysis (Factor 1: goods, Factor 2; store's facility and environment, Factor 3; salesman and service, Factor 4; brand, Factor 5; price, Factor 6; store's atmosphere, Factor 7; convenience of the transportation and access, Factor 8; promotion and advertisement) 2. as results of importance-performance analysis, 10 attributes were shown in area I (high importance and high performance) which needed a strategy of Keep Up the Good Work, 6 attributes in area II (low importance but high performance) fitted a strategy of Possible Overkill, 12 attributes in area III (high importance but low performance) corresponded to a strategy of Concentrate Here, and finally a strategy of Low Priority was needed to 9 attributes in area IV (low importance and low performance).

• 한국조경학회지
• /
• 제20권3호
• /
• pp.33-43
• /
• 1992

The perceptual characteristic on the slope scenery around highway is very similar as the general perceptual characteristic in the landscape. This process determines by the relationship between the scenery observers and the characteristics of its place. It is very important to have a analysis on highway slope scenery in our particular culture in Korea since our country's highways are done by cutting mountains : therefore, we have a lot of slopes around highways. The physical characteristics on the highway scenery determines how we should build scenery around highway to a satisfactory level. The results drawn from this research work are as follow: 1) The satisfaction for slope scene had been affected by sex, native and experience of travel. I thought that the slope scene having peculiar form will offer the highest satisfaction. 2) Psychological factor, reflected satisfaction of slope scene, 몽 a grip of three factors as the factor of evaluation, texture, formation, and presumption formula is : Satisfaction=1.04(Evauluation factor)+0.83(Texture factor)+0.15(Formation factor)+4.28)R2=0.69). 3) Vine among the vegetation componeents of slope scene highly correlated with the evaluation factor and grass, shrub correlated with the texture factor. 4) Rock among the structual components of slope scene highly correlated with the formation factor, and stockade, lattice correlated with the evalution factor. 5) Gradient among the properties which determined slope form, highly correlated with the formation factor.

• 사회복지연구
• /
• 제49권2호
• /
• pp.5-38
• /
• 2018

본 연구는 한국사회 기혼남녀의 일-생활 균형의 문제를 시간표 분석을 통해 파악하는 것을 목적으로 한다. 이를 위해 2014년도 통계청 생활시간조사 시간대자료를 이용하여 3,131쌍 기혼부부의 6,262개의 시간일지를 분석하였다. 분석 방법으로는 시간양뿐 아니라 시간배치를 고려한 전체적인 분석을 위해 배열분석을 사용하였으며, 이때 Lesnard(2014)의 DHM(Dynamic Hamming Matching) 방식으로 배열 간 거리를 산출하여 타이밍을 중시하는 시간분석에 무리가 없도록 조치하였다. 구체적으로는, 군집분석을 통해 도출된 부부결합의 가구노동시간 9개 유형별로, 남녀 각각의 노동, 가사, 수면, 자기관리, 적극적 여가, 소극적 여가, 기타로 구성된 일과 생활시간의 평균시간양과 시간대별 분포와 최빈상태의 그래프를 산출하여 해석하였다. 이러한 분석결과를 종합하여, 일-생활 불균형된 시간구성의 특성으로 '만연된 장시간노동', '젠더불평등한 시간배분', '비표준시간대 노동으로 인한 삶의 질 하락', '여가시간의 부족'을 지목하였으며, 마지막으로는 이러한 결과에 기초해 일-생활 균형을 높이기 위한 사회복지의 실천적 정책적 함의를 논의하고 후속연구를 제언하였다.

• 한국실내디자인학회논문집
• /
• 제7호
• /
• pp.38-44
• /
• 1996

To improve and replete many problems which are discovered the present condition and cases of interior architecture education previously, 1) Adopted the sixth semester, the ninth semester of 3 -year course of study as a reform of the school system. 2) Building up Design -basic understandings of design , Design Resources -layout course, factor course and Design Communication three -steps of systematic -educational course of methodical course fro transmitting and 3) Classifying interior space designer , interior factor designer, interior decorator, special -space designer as practical parts. 4) Divided three fields : layout, construction work, factor design , related to interior design works. 5) Also, divided like (Table-2), job-analysis and formation of relating course into layout and construction work. 6) Analyzed and (Table-3) the present condition of four domestic Junior college (Seoul and kyong -ki areas) as a case study. 7) Analyzed and surveyed (Table-4) three American colleges, sixth semester and ninth semester of three year course of study and 8) Have to solidify practical computer education, foreign language education as the terms desired keeping pace with internationalization and the changes of opening periods. 9) As above-mentioned, reenforcing the fundamental education of lower grades and needs fractionizing special education of higher grades. Finally, needs to be prepared the environments which enable to develop the marked educational goals & contents and then be exeucted, which make one do his responsibility after setting out in the world, satisfying a periods wishies : many competent experts that can be produced.

• Safety and Health at Work
• /
• 제6권3호
• /
• pp.233-239
• /
• 2015

Background: The Job Content Questionnaire (JCQ), which is based on the Demand-Control-Support model, is designed to measure the psychosocial characteristics of the respondent's work, and has been identified to predict health and psychological outcomes. The purpose of this study was to investigate the psychometric properties of this instrument and the subsequent adaptation of its scales to the population of Greek health workers. Methods: The Greek version of the JCQ was developed by using forward- and back-translation in accordance with the JCQ policy. The reliability and validity of the measure were investigated in a sample of health workers working in a hospital in Athens, Greece. The internal consistency of the scales was examined based on Cronbach ${\alpha}$ coefficients, and the validity was evaluated subjecting the items of the three main scales of the JCQ (decision latitude, psychological job demands, and social support) to exploratory and confirmatory factor analysis. Results: The reliability of the scales was found to be acceptable for all the scales, except for the skill discretion subscale. Confirmatory factor analysis confirmed a slightly modified version of the original construct including several items to more than one factor. Conclusion: Our findings suggest that the Greek JCQ is reliable and valid for investigating psychosocial job characteristics among Greek health workers.