• 콘크리트학회논문집
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• 제15권5호
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• pp.662-669
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• 2003

최근 들어 콘크리트 구조물의 내구성 및 사용성이 강조되고 있는 추세에서 많은 연구자들이 초기 재령 콘크리트의 거동에 대하여 실험 및 해석적으로 분석하고 있다. 그러나 이러한 노력에도 불구하고 아직도 초기재령 콘크리트의 거동에 대하여 많은 불확실성이 존재하며 대부분의 실험이 실내 실험에 국한되어 실제 구조물 내에서 발생하는 거동에 대한 분석은 전무한 실정이다. 본 연구에서는 실제 구조물의 변형 및 열응력 이력의 계측을 통하여 초기재령 콘크리트의 응력 예측에 사용되는 컴플라이언스 함수를 추정하여 제안하였다. 본 연구에서 제안된 컴플라이언스 함수를 재하재령 및 재하기간에 따라 기존의 컴플라이언스 함수와 비교하였으며 기존의 함수는 초기 콘크리트의 변형을 과소평가하는 것으로 나타났다. 또한 제안된 함수를 이용하여 콘크리트의 시간에 따른 응력을 계산하였으며 계산된 응력은 기존의 함수를 이용하여 계산된 응력이 실제 응력을 과대평가하는것과는 달리 계측된 응력과 거의 일치하였다. 따라서 본 연구에서 제안된 컴플라이언스 함수는 초기재령 콘크리트의 시간에 따른 응력을 합리적으로 평가하는데 유용하게 활용될 수 있을 것으로 사료된다.

• 디지털융복합연구
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• 제17권5호
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• pp.417-423
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• 2019

본 연구는 영유아 자녀를 둔 부부의 양육 스트레스가 결혼만족도에 미치는 영향을 파악하는데 목적이 있다. 이를 위하여 한국아동패널 7차년도 자료 중에서 경기도에 거주하는 455쌍의 부부 자료를 활용해서 자기-상대방 효과 모델로 분석하였다. 이를 위해서 SPSS 21.0 version과 AMOS 21.0 version을 활용하였다. 이에 따르는 결과는 다음과 같다. 첫째, 양육 스트레스가 결혼만족도에 미치는 영향에는 남편과 아내에게서 자기 효과와 상대방 효과가 존재하였다. 둘째, 양육 스트레스가 결혼만족도에 미치는 남편의 자기 효과와 아내의 상대방 효과에는 유의한 차이가 없었다. 셋째, 양육 스트레스가 결혼만족도에 미치는 아내의 자기 효과는 남편의 상대방 효과보다 큰 것으로 나타났다. 이러한 결과를 토대로 영유아 자녀를 둔 부부의 양육 스트레스를 줄이고, 결혼만족도를 높이기 위한 실천 방안을 제시하였다.

• The Journal of Asian Finance, Economics and Business
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• 제8권3호
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• pp.605-618
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• 2021

The use of human resources determines the success of enterprises. This study applies the questionnaire design method to analyze the relationship between job stress, job satisfaction, and job performance, noting that few studies have comparatively examined these variables between industries, especially between high-tech and traditional industries. The proposed assessment model in this study can facilitate decision-makers' ability to make the optimal business decisions through their personnel systems, thereby improving employee satisfaction and increasing job performance. This study found that in the traditional and high-tech industries, some demographic variables have significant differences in the job stress, job satisfaction and job performance, but the demographic variables that can significantly affect the differences in these job's variables are differences between industries. This study acknowledges that job stress and performance have a significantly negative correlation, and traditional industries will have more stress factors than high-tech industries. In addition, support for traditional industries exist in job satisfaction and performance has a significantly positive correlation, but not in high-tech industries. Job stress for performance has a significantly negative correlation in two industries. This study reconfirmed the relationship between job stress, satisfaction and performance, found some differences in this relationship and the respective industrial characteristics.

• Asian-Australasian Journal of Animal Sciences
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• 제24권4호
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• pp.479-484
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• 2011

The study was conducted on 20 Holstein X Sahiwal cross bred dairy cows, with an average milk production of $2,752{\pm}113.79$ liters in $284{\pm}5.75$ days during a single lactation, that were divided in to two groups of 10 animals. We investigated the oxidative stress and antioxidant status during the transition period in dairy cows. In this study, plasma level of MDA was considered as an indicator of lipid peroxidation and SOD, catalase, GSH and GSHPx as antioxidants. The lipid peroxidation was significantly (p<0.001) higher in cows during early lactation as compared to the cows in advanced pregnancy. A significant positive correlation (r = +0.831, p<0.01) was determined between MDA and catalase in early lactating cows. In early lactating cows, blood glutathione was significantly lower than in advanced pregnant cows. However, early lactating cows showed non-significant negative correlation for all antioxidant enzymes with lipid peroxidation. In conclusion, dairy cows seemed to have more oxidative stress and low antioxidant defense during early lactation or just after parturition than advanced pregnant cows, and this appears to be the reason for their increased susceptibility to production diseases (e.g. mastitis, metritis, retention of fetal membranes etc.) and other health problems.

• 한국산학기술학회논문지
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• 제18권6호
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• pp.470-477
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• 2017

최근 유아교육기관에서 유아들이 보내는 시간이 증가함에 따라 유아교사의 질적 향상이 그 무엇보다 중요한 문제로 부각되고 있다. 이에 본 연구는 유아교사의 전문성 인식과 직무스트레스가 교사와 유아 간 상호작용에 어떠한 영향을 미치는지 알아보기 위해 수행되었다. 연구대상은 어린이집과 유치원에 근무하는 유아 교사로 30개원 150명을 대상으로 설문지를 배포하였고, 총 134부의 설문지를 회수하여 SPSS 18.0 프로그램을 사용하여 자료를 분석하였다. 분석 결과, 첫째, 유아교사의 전문성 인식과 직무스트레스 사이에서 원장의 지도력 및 행정적 지원 부족이 교사의 전문성 인식에 영향을 미치는 것으로 나타났으며, 전문성 인식과 상호작용의 상관관계에서 언어적 상호작용과 행동적 상호작용이 정서적 상호작용의 영향을 받는 것으로 분석되었다. 둘째, 유아교사의 전문성 인식과 직무스트레스가 정서적 상호작용에 미치는 영향을 분석한 결과, 전문성 인식의 여러 하위변인 중 직업윤리와 전문적 지식과 기술 요구의 변인이 긍정적인 영향을 주어 교사와 유아 간 상호작용의 정서적 언어적 행동적 상호작용의 모든 변인에서 유의미한 영향을 미치는 것으로 나타났다.

• 한국정보전자통신기술학회논문지
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• 제8권3호
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• pp.203-213
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• 2015

본 연구 목적은 유치원 행정업무담당자의 직무스트레스와 스트레스대처 방안을 파악하고자 한다. 연구 대상은 경상남도 ${\bigcirc}$시에 소재하는 유치원 행정업무담당자 119명을 대상으로 2014년 9월 10일부터 12월 20일까지 설문조사를 실시하였다. 분석방법은 SPSS WIN 18.0프로그램을 이용하여 빈도분석, t-test, 상관분석, 다중회귀분석을 실시하였다. 분석결과는 인구사회학적 특성에 따른 연령, 결혼유무, 종교, 직급 등 요인별 차이가 있었다. 둘째, 상관관계에서 스트레스 대처방안의 하위변수인 경험자의 조언, 문제 상항에 대한 방어기제는 부적 상관이 있었다. 셋째, 회귀모형에서 직무스트레스와 음주회수, 직급이 통계적으로 유의미한 요인으로 나타났다. 본 연구는 유치원 행정업무 담당자의 업무 개선을 위한 기초자료가 될 것으로 판단된다.

• Child Studies in Asia-Pacific Contexts
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• 제4권1호
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• pp.13-25
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• 2014

The goal of this study was to examine the correlations of stress coping strategies and cultural, psychological and school adjustment among Korean early study-abroad adolescents in the United States. Participants were 437 Korean early study-abroad adolescents aged 15 to 18 years old enrolled in summer language institutes located in Seoul and Gyeonggido, South Korea. The survey consisted of questionnaires relating to coping strategies and, cultural, psychological and school adjustments. The data was collected during the break time of summer language institute classes. Results showed that these adolescents' problem focused and social support coping strategies were positively related with acculturation, psychological adjustment and school adjustment, and emotion focused coping strategy was positively related to satisfaction of life.

• 한국도로학회논문집
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• 제16권6호
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• pp.59-67
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• 2014

PURPOSES : The purpose of this study is to analyse the longitudinal steel strain and stress of continuously reinforced concrete pavement(CRCP) with longitudinal and transverse direction at early age using stress dependent strain analysis method. METHODS : To measure the longitudinal steel strain, 9-electrical resistance and self-temperature compensation gauges were installed to CRCP test section (thickness = 250mm, steel ratio = 0.7%) and continuously measured 10min. intervals during 30days. In order to properly analyze the steel stress first, temperature compensation process has been conducted. Secondly, measured steel strains were divided into stress dependent strain (elastic strain) and stress independent strain (thermal strain) and then stress dependent strain was applied to stress calculation of longitudinal steels. RESULTS : Steel strains were successfully measured during 30days. To verify the accuracy of temperature compensation process, measured coefficient of thermal expansion(COTE,$11.46{\times}10^{-6}m/m/^{\circ}C$) of longitudinal steel before paving was compared with that of unrestrained steel. Max. steel stress in the transverse direction shows about 266MPa at 23days after placement. CONCLUSIONS : Steel stresses in the longitudinal and transverse direction have been evaluated. In longitudinal direction, steel stress from the crack was rapidly reduced from 183MPa at crack to 18MPa from 600mm apart the crack. From this observation, stress effective length can be identified as within 600mm apart from the crack. In transverse direction, max. stress point was located near the center of pavement width and stress level(266MPa) is about 66% of yield stress of steel.

• 대한간호학회지
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• 제54권1호
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• pp.106-117
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• 2024

Purpose: This study examined the effects of stress vulnerability and parental burnout on the mental health of women with early school-aged children, with a focus on the mediating role of spirituality. Methods: A survey was conducted among 171 women with early schoolaged children in Gyeonggi Province, Gangwon Province, and Seoul. Data were collected from September to December 2022 using the Korean-Symptom Check List 95, the Parental Burnout Assessment, and the Spirituality Assessment Scale. The data were analyzed using structural equation modeling with SPSS/WIN 22.0 and AMOS 20.0. Results: The study model demonstrated a good fit, explaining 40.5% of the variance in mental health through stress vulnerability, parental burnout, and spirituality. Spirituality had a significant direct impact on mental health. Additionally, participants' spirituality directly influenced their mental health, while stress vulnerability and parental burnout indirectly affected their mental health and were mediated through spirituality. Conclusion: Stress vulnerability and parental burnout are negatively associated with mental health, while spirituality partially mediates these effects. Implementing a program to promote spirituality is suggested to assist mothers in recognizing the value and meaning of parenting activities during nursing interventions for mental health.

• 대한가정학회지
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• 제42권11호
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• pp.109-122
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• 2004

This study examined the characteristics of children, parents, family, and the extra context related to the parenting stress of employed and unemployed mothers from a broader perspective. The subjects were 323 employed mothers 3nd 300 unemployed mothers of pre-school age children. Parenting stress due to the role of being a parent for both employed and unemployed mothers was correlated with the chid's activity level, husband support, quality of life, available social support, and satisfaction of early childhood program's location. Parenting stress due to child-rearing of both employed and unemployed mothers was correlated with child's birth order, activity level and rhythmicity of child, husband support, quality of life, available social support, and satisfaction of early childhood program. Number of children was the strongest predictor of parenting stress due to the role of being a parent for employed mothers and the child's activity level for unemployed mothers. Besides, the child's activity level was the strongest predictor of parenting stress due to child-rearing for both employed and unemployed mothers.